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Youth movements
(2008)
Yiddish
(2008)
Weitere Informationen unter: http://www.dovidkatz.net/dovid/dovid_stylistics.htm
This version of the entry for Yiddish contains a moderate number of revisions made too late for inclusion in the printed version, which appears in vol. 1, pp. 979-987 of the Yivo Encyclopedia of Jews in Eastern Europe. Some of these changes were made in response to helpful comments by Dr. Alexander Beider of Paris to a previous online version posted on the YIVO website
The present study was elaborated within the scope of the INTAFERE (Integrated Analysis of Mobile Organic Foreign Substances in Rivers) project which investigates the occurrence of xenobiotics in small freshwater streams with particular consideration of social impact factors. The aim of this study is to investigate the seasonal and spatial variance of organic micropollutants in small fresh water streams and to identify possible sources and sinks. Therefore four small freshwater river systems in Hesse, Germany, have been investigated with respect to common organic pollutants such as: the organophosphates tri-n-butyl phosphate (TBP), tris(2-butoxyethyl)phosphate (TBEP), tris(2-chloroethyl)phosphate (TCEP), tris(1-chloro-2-propyl)phosphate (TCPP), and tris(1,3-dichloro-2-propyl)phosphate (TDCPP), the synthetic musk fragrances 1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexa-methylcyclopenta-[g]-2-benzopyran (HHCB) and 7-acetyl-1,1,3,4,4,6-hexamethyl-1,2,3,4-tetrahydronaphthalene (AHTN), the endocrine disruptors bisphenol A (BPA), 4-tert-octylphenol (OP) and the technical isomer mixture of 4-nonylphenol (NP), the herbicide terbutryn [2-(t-butylamino)-4-(ethylamino)-6-(methylthio)-s-triazine] as well as the insect repellent N,N-diethyl-m-toluamide (DEET). Water samples were collected in the time span from September 2003 to September 2006 at 26 sampling locations. The samples were extracted with solid phase extraction (SPE) and analyzed by coupled gas chromatography-mass spectrometry (GC-MS). For quantification the internal standard method was used. The results of the study showed an ubiquitous occurrence of organic pollutants in the fresh water streams of the study area. The organophosphates have been detected in 90 % of the water samples with mean concentrations of 502 ng/l (TCPP), 276 ng/l (TBP), 183 ng/l (TBEP), 118 ng/l (TCEP) and 117 ng/l (TDCPP). Sewage treatment plant (STP) effluents were identified as the dominating source for the chlorinated organophosphates as well as for the synthetic musk fragrances and the insect repellent DEET in the river systems. Consequently the highest concentrations were observed in the Schwarzbach system characterized by the highest proportion of waste water compared to the other river systems. Mean concentration levels of the synthetic musk fragrances HHCB and ATHN were 141 ng/l and 46 ng/l, respectively and 124 ng/l in case of DEET. The synthetic musk fragrances showed a clear seasonal trend with significantly lower concentrations in summer times compared to winter times, which is ascribed to stronger photodegradation and volatization during summer times. In contrast, mean DEET concentrations and loads were significantly higher in summer than in autumn, winter and spring, in parallel with the main insect season. The concentrations of the endocrine disruptors BPA, NP and OP in the river water samples ranged from <20 ng/l to 1927 ng/l, <10 ng/l to 770 ng/l, and <10 ng/l to 420 ng/l, respectively. Whereas OP was present in about 2/3 of the samples, NP and BPA could only be detected in 56% and 13% of the water samples, respectively. BPA levels exceeded in two samples the predicted no-effect concentration (PNEC) for water organisms. In case of NP, highest concentrations and loads were found in September 2003 and decreased significantly since then. In contrast, concentrations and loads of OP which serves in a similar application field remained nearly constant during the sampling period. The decrease of NP can be attributed to the implementation of the European Directive 2003/53/EG, which restricts the use of nonylphenols and nonylphenol ethoxylates since January 2005. However, at the end of the sampling period in September 2006, NP could still be detected at mean concentrations of 18 ng/l in the river waters of the sampling area. Furthermore, absence of NP in several samples from associated STP effluents indicate that the STPs cannot be the only sources for NP found in the river water. The herbicide terbutryn was present in the rivers during the whole sampling period from September 2003 to September 2006 despite a ban on its use as a herbicide from January 2004 on. Terbutryn levels ranged from < 4 ng/l to 5600 ng/l, showing a clear spatial pattern with high terbutryn concentrations in the Weschnitz and Modau river systems and significantly lower terbutryn levels in Schwarzbach and Winkelbach. Results from the analysis of two STP effluents discharging into the Weschnitz and the Modau, respectively, indicate that terbutryn enters the rivers from this source. Furthermore, terbutryn concentrations and loads showed a clear seasonal trend with significantly higher levels in summer and autumn. Obviously, the ban on agricultural use of terbutryn at the end of 2003 had no discernable influence on terbutryn concentration in the rivers because there was no trend of decreasing.
Writing against the odds : the south’s cultural and literary struggle against progress and modernity
(2008)
Die Literatur und Kultur der Südstaaten ist entscheidend geprägt von ihrer Orientierung an der eigenen Geschichte und Vergangenheit. Die düstere Vergangenheit, die die Gegenwart überschatten und die Zukunft determiniert ist ein Südstaatenthema par exellence und allgegenwärtig in ihrer Kultur und Literatur. Nach dem Bürgerkrieg und der Reconstruction Era ist der Süden kulturell und ökonomisch ausgeblutet, am Boden und isoliert. Nach dem Krieg weitet sich die Kluft zwischen Nord- und Südstaaten immer weiter aus, ein Prozess, der jedoch schon so alt ist wie die Vereinigten Staaten selbst und bereits im beginnenden 18. Jahrhundert seinen Anfang nimmt. Die Isolation ist gleichzeitig gewollt und ungewollt, bewusst und unbewusst. Die Scham des verlorenen Krieges und die Marginalisierung sind die Katalysatoren für die Kultivierung und das Bestreben nach Erhalt der Besonderheiten der Südstaaten, mit ihrer vermeintlich überlegenen Kultur und Moral. Es beginnt die kommerzialisierte, hoch ideologisierte Konstruktion der Geschichte und Identität der Südstaaten, die in alle Lebensbereiche strahlt. Der melancholische Blick in die Vergangenheit als wichtigste Referenz und kulturellen Fluchtpunkt ersetzt den Eintritt in die Moderne und Modernität mit ihrer Schnelllebigkeit, Austauschbarkeit und die Aufgabe der Tradition für eine rasante Gegenwart. Das Individuum der Südstaaten sieht sich statt mit einer Flut an Wahlmöglichkeiten und Optionen, mit einer einengenden Gesellschaft konfrontiert, die wenig Spielraum für Abweichungen übriglässt und ein harsches Kontrollsystem hat. Es ist eine einzigartige Mischung aus Stolz, Scham und einem Gefühl der gleichzeitigen Unter- und Überlegenheit, die einen besonders guten literarischen Nährboden hervorbringt. In dieser Arbeit wird den historischen, kulturellen, und literarischen Wurzeln der Südstaatenliteratur seit der Southern Renaissance nachgegegangen, um dann die ständig perpetuierten formalen und inhaltlichen Strukturen darzustellen, die wenig Veränderungen erfahren haben. Diese Perpetuierung resultiert aus der einzigartigen Situation der Südstaaten, aus der historischen Last, die unvermindert aktuell bleibt und längst nicht verarbeitet ist. Südstaatenautoren konnten und können nicht die traditionellen Formen und Themen ablegen, solange diese konstituierende Bestandteile der Kultur und Identität der Südstaaten bleiben. Die Südstaaten verweigern sich der Modernität und empfinden Fortschritt und die moderne Massengesellschaft nicht nur als Bedrohung, sondern als Einfluss aus den Nordstaaten, der die eigene Kultur bedroht und eine Einmischung von außen ist, die es abzuwenden gilt. Traditionsbewusste, reaktionäre Tendenzen und Elemente ziehen sich selbst durch vermeintlich progressive, moderne Entwicklungen und Phänomene. Ich kombiniere identitätskonstituierende, isolierende und melancholische Elemente und beleuchte sie historisch, kulturell und literarisch, um eine mehrschichtige Perspektive zu erlangen. Das Verständnis dieser historischen Last und deren unverminderte Bedeutung und Auswirkung auf die Literatur und Kultur der Südstaaten ist essentiell für eine tiefere Einsicht in deren Strukturen und Bedeutung.
A preliminary checklist of Calpini is provided, incorporating corrections and changes to publication dates and nomenclature as presented in the checklists of Poole (1989), Fibiger and Lafontaine (2005), and Holloway (2005). Culasta Moore is removed from synonymy with Calyptra Ochsenheimer. Eudocima talboti (Prout) and Graphigona antica Walker are placed in synonymy with E. cajeta (Cramer) and G. regina (Guenée), respectively. Africalpe Krüger, Ferenta Walker, Gonodonta Hübner, Graphigona Walker, Oraesia Guenée, and Tetrisia Walker, are added to the tribe based on shared characters. The genera Cecharismena Möschler, Goniapteryx Perty, Pharga Walker, Phyprosopus Grote, Psammathodoxa Dyar, and Radara Walker are removed and considered incertae sedis. Hemiceratoides and Phyllodes are not considered to be members of Calpini.
Women Writing Zimbabwe
(2008)
The fifteen stories in Women Writing Zimbabwe offer a kaleidoscope of fresh, moving, and comic perspectives on the way in which events of the last decade have impacted on individuals, women in particular. Several stories (Tagwira, Ndlovu and Charsley) look at the impact that AIDS has on women who become the care-givers, often without emotional or physical support. It is often assumed that women will provide support and naturally make the necessary sacrifices. Brickhill and Munsengezi focus on the hidden costs and unexpected rewards of this nurturing role. Many families have been separated over the last decade. Ndlovu, Mutangadura, Katedza, Mhute and Rheam all explore exile's long, often painful, reach and the consequences of deciding to remain at home. In lighter vein, but with equal sharpness of perception, Gappah, Manyika, Sandi, and Holmes poke gentle fun at the demands of new-found wealth, status and manners. Finally, Musariri reminds us that the hidden costs of undisclosed trauma can continue to affect our lives for years afterwards. All of the writers share a sensitivity of perception and acuity of vision. Reading their stories will enlarge and stimulate our own understanding.
This study investigates the experiences of women journalists during the last phase of Namibia's liberation struggle against South African rule. Black or white, women journalists in Namibia made significant contribu-tions to the liberation cause -including the founding of a high-profiled newspaper -whilst others worked for media sympathetic to the apart-heid government. Based on interviews and deploying feminist media theory, Maria Mboono Nghidinwa pays close attention to the gendered power relationships in the newsrooms of newspapers and radio stations at the time. She looks at the intense political intimidations which tar-geted women and, in particular, the constraints experienced by black women journalists.
Women and Halakha Shiur
(2008)
The blood–brain barrier (BBB) is confined to the endothelium of brain capillaries and is indispensable for fluid homeostasis and neuronal function. In this study, we show that endothelial Wnt/beta-catenin (beta-cat) signaling regulates induction and maintenance of BBB characteristics during embryonic and postnatal development. Endothelial specific stabilization of beta-cat in vivo enhances barrier maturation, whereas inactivation of beta-cat causes significant down-regulation of claudin3 (Cldn3), up-regulation of plamalemma vesicle-associated protein, and BBB breakdown. Stabilization of beta-cat in primary brain endothelial cells (ECs) in vitro by N-terminal truncation or Wnt3a treatment increases Cldn3 expression, BBB-type tight junction formation, and a BBB characteristic gene signature. Loss of beta-cat or inhibition of its signaling abrogates this effect. Furthermore, stabilization of beta-cat also increased Cldn3 and barrier properties in nonbrain-derived ECs. These findings may open new therapeutic avenues to modulate endothelial barrier function and to limit the devastating effects of BBB breakdown.
The fear that with the existence of an unconditional basic income sufficient for living many people would cease to engage in a productive life, would only relax, consume and devote to having fun, can be addressed from different perspectives. One of these is the sociology of religion, which allows elaborating the argument that with such a way of life the question about the meaning of life cannot be answered. But this "meaning question", the whole research within the field of the sociology of religion speaks for this, compellingly must be answered by each life praxis. It cannot remain unanswered, as is said already in the Bible: "Man does not live on bread alone, [but on every word that comes from the mouth of God.]" (5. Moses 8.3, Matthew 4.4, Lukas 4.4) The paper examines the reasons of this fact and its consequences in regard to a life with an unconditional basic income sufficient for living.
This paper shows that several typologically unrelated languages share the tendency to avoid voiced sibilant affricates. This tendency is explained by appealing to the phonetic properties of the sounds, and in particular to their aerodynamic characteristics. On the basis of experimental evidence it is shown that conflicting air pressure requirements for maintaining voicing and frication are responsible for the avoidance of voiced affricates. In particular, the air pressure released from the stop phase of the affricate is too high to maintain voicing, which in consequence leads to a devoicing of the frication part.
Our study is concerned with the identification of ‘difficult’ structure s in the acquisition of a foreign language, which will shed light on theoretical considerations of L2 processing. We argue that – compared to simple vocabulary items or abstract syntactic patterns – structures that contain lexical material as well as categorial variables are especially difficult to acquire. The difficulty level for particular patterns is shown to depend on surface invariability but not on the syntactic categories within which target patterns are embedded. As an example we study the distribution of certain structures which are underused by L2 German learners.
The floristic composition and environmental relations of wetland vegetation in the Wallis Lake catchment (32˚ 09’S; 152˚ 20’E), area 1292 km2, on the lower North Coast of NSW are described. The catchment supports wetlands listed as Endangered Ecological Communities (NSW Threatened Species Conservation Act 1995) and plant species of high conservation value. A methodology of air photo interpretation, site-based sampling (114 quadrats) and landscape differentiation was developed. A total of 393 vascular plant taxa were recorded (including 10% exotics). Wetland vegetation formations and subformations including mangrove forest, swamp sclerophyll forest, wet heathland, chenopod shrubland, tussock grassland, sedgeland and rushland are described using numerical classification. 31 plant species of national or regional conservation significance are identified. Four Endangered Ecological Communities are discussed – Coastal Saltmarsh, Swamp Oak Floodplain Forest, Swamp Sclerophyll Forest on Coastal Floodplains, and Freshwater Wetlands on Coastal Floodplains. A key recommendation is the completion of reliable wetland vegetation and soil landscape mapping for all land tenures in the catchment – to assess wetland condition and conservation significance, and representation in formal conservation reserves, thereby directing future priorities for the protection of wetland biodiversity on both public and private lands. The methodology developed can be applied to the survey and conservation of wetland biodiversity in other parts of coastal NSW.
Water-filtered infrared-A (wIRA) can act as a penetration enhancer for topically applied substances
(2008)
Background: Water-filtered infrared-A (wIRA) irradiation has been shown to enhance penetration of clinically used topically applied substances in humans through investigation of functional effects of penetrated substances like vasoconstriction by cortisone.
Aim of the study: Investigation of the influence of wIRA irradiation on the dermatopharmacokinetics of topically applied substances by use of optical methods, especially to localize penetrating substances, in a prospective randomised controlled study in humans.
Methods: The penetration profiles of the hydrophilic dye fluorescein and the lipophilic dye curcumin in separate standard water-in-oil emulsions were determined on the inner forearm of test persons by tape stripping in combination with spectroscopic measurements. Additionally, the penetration was investigated in vivo by laser scanning microscopy. Transepidermal water loss, hydration of the epidermis, and surface temperature were determined. Three different procedures (modes A, B, C) were used in a randomised order on three separate days of investigation in each of 12 test persons. In mode A, the two dyes were applied on different skin areas without water-filtered infrared-A (wIRA) irradiation. In mode B, the skin surface was irradiated with wIRA over 30 min before application of the two dyes (Hydrosun® radiator type 501, 10 mm water cuvette, orange filter OG590, water-filtered spectrum: 590–1400 nm with dominant amount of wIRA). In mode C, the two dyes were applied and immediately afterwards the skin was irradiated with wIRA over 30 min. In all modes, tape stripping started 30 min after application of the formulations. Main variable of interest was the ratio of the amount of the dye in the deeper (second) 10% of the stratum corneum to the amount of the dye in the upper 10% of the stratum corneum.
Results: The penetration profiles of the hydrophilic fluorescein showed in case of pretreatment or treatment with wIRA (modes B and C) an increased penetration depth compared to the non-irradiated skin (mode A): The ratio of the amount of the dye in the deeper (second) 10% of the stratum corneum to the amount of the dye in the upper 10% of the stratum corneum showed medians and interquartile ranges for mode A of 0.017 (0.007/0.050), for mode B of 0.084 (0.021/0.106), for mode C of 0.104 (0.069/0.192) (difference between modes: p=0.0112, significant; comparison mode A with mode C: p<0.01, significant). In contrast to fluorescein, the lipophilic curcumin showed no differences in the penetration kinetics, in reference to whether the skin was irradiated with wIRA or not. These effects were confirmed by laser scanning microscopy. Water-filtered infrared-A irradiation increased the hydration of the stratum corneum: transepidermal water loss rose from approximately 8.8 g m-2 h-1 before wIRA irradiation to 14.2 g m-2 h-1 after wIRA irradiation and skin hydration rose from 67 to 87 relative units. Skin surface temperature increased from 32.8°C before wIRA to 36.4°C after wIRA irradiation.
Discussion: The better penetration of the hydrophilic dye fluorescein after or during skin irradiation (modes B and C) can be explained by increased hydration of the stratum corneum by irradiation with wIRA.
Conclusions: As most topically applied substances for the treatment of patients are mainly hydrophilic, wIRA can be used to improve the penetration of substances before or after application of substances – in the first case even of thermolabile substances – with a broad clinical relevance as a contact free alternative to an occlusive dressing.
Dan Janzen proposed in a paper in 1977 (loc. cit.), that a clone of aphids and for that matter dandelions consists, respectively, of one large ‘super-organism’. In effect a single evolutionary individual able to exploit resources over an expanded geographical range, and sometimes with aphids also, a wider range of resources (different kinds of host plants), much more than if the organism concerned were a single individual. Such a view is of course based on the notion that an asexual lineage (clone) has strict genetic fidelity, that is to say, is genetically identical over its entire genome between clone mates. This seems a highly unlikely scenario and indeed, modern molecular markers have revealed a plethora of mutational events within such so-called clones. Here in this talk I provide evidence from aphids that they are not ‘perfect forms’ but rather show a range of variations, including evidence of hybridization events, and that they can and do adapt to environmental circumstances, sometimes swiftly. Hence that even as asexual lineages, aphids are able to exploit new ecological circumstances and flourish, e.g. host adapted forms, whilst some species, notably the highly polyphagous peach-potato aphid (Myzus persicae), have also evolved resistance to a range of pesticides, and by so doing, have managed to survive in the face of these poisons. However, there are fitness costs associated with such adaptation, more especially in the highly resistant aphids. Because of the variation and adaptation shown by particular aphid species and asexual lineages, they cannot be described as a single evolutionary unit in a ‘Janzenian’ sense. What they show is ecological plasticity and an ability to adapt quickly, in large part enhanced by their incredible rate of reproduction and population expansion. Some migrating winged aphids are constrained in their exploitation of new habitats by environmental factors – geographical, climatic and ecological, especially lack of suitable hosts. In contrast, some other aphid species have seemingly colonized large areas of the world (probably aided by human agency) so that deciding what a population is exactly is a difficult task. It may even be that certain ‘super clones’ detected using molecular markers have indeed spread far and wide, clones which appear to fit the description of being ‘general purpose genotypes’ in that they can feed on a range of plant hosts under a range of different geographical-climatic conditions. As such, they are nearest to Dan Janzen’s views, although here again, strict genetic fidelity is not necessarily proven, only accepted from the application of a limited number of markers, e.g. multilocus genotypes in the case of microsatellite markers.
The thickness of the cerebral cortex can provide valuable information about normal and abnormal neuroanatomy. High resolution MRI together with powerful image processing techniques has made it possible to perform these measurements automatically over the whole brain. Here we present a method for automatically generating voxel-based cortical thickness (VBCT) maps. This technique results in maps where each voxel in the grey matter is assigned a thickness value. Sub-voxel measurements of thickness are possible using sub-sampling and interpolation of the image information. The method is applied to repeated MRI scans of a single subject from two MRI scanners to demonstrate its robustness and reproducibility. A simulated data set is used to show that small focal differences in thickness between two groups of subjects can be detected. We propose that the analysis of VBCT maps can provide results that are complementary to other anatomical analyses such as voxel-based morphometry.
Background: In Germany, 17% of 59,000 persons living with HIV/AIDS are female. Accordingly, the research focus in clinical studies as well as in cohort analyses has been almost exclusively on HIV-positive men. As a consequence, there is an urgent need to characterize and evaluate the outcome of HAART in HIV-positive women and to identify special requirements of this particular patient population.
Methods: Cross-sectional multicentre (n = 31 centres) evaluation to observe characteristics of 1,557 HIV-positive women receiving medical care in Germany between June 2007 and March 2008. Data acquisition was performed using standardized questionnaires.
Summary of results: Of 1,557 HIV-positive women studied, 1,191 (77%) received HAART. Mean age was 40 years and average time of known HIV-infection was 9 years. Risk of HIV transmission was: 40% heterosexual intercourse in Germany, 36% heterosexual intercourse in a high prevalence country; 17% IDU; 7% other reasons for transmission. 46% of the women had a migration background. Mean time on antiretroviral treatment was 7 years. 53% of the female participants had been treated with >2 HAART-regimens. 47% of the study subjects received a PI-based regimen, 33% a NNRTI-based regimen; 20% were on other combinations. The most commonly used PI and NNRTI were lopinavir/r and nevirapine, respectively. Only 48% of all women under HAART achieved a viral load <40 copies/ml. There was a significant difference between the PI-treated group with 44% patients <40 copies/ml and the NNRTI-treated group with 56% <40 copies/ml (p = 0.003).
Conclusion: We found that HIV-positive women depicted an inferior virological response to HAART compared to those previously published in German cohort analyses dominated by men (response rates >75%). Possible differences in adherence or drug resistance may have impacted these results and are currently being evaluated in ongoing sub-analyses. Of note, the lack of a study arm with male patients is a limitation of this investigation. However, this is partly off-set by the fact that there are good comparative data in the male population found in other cohorts. We conclude that our results are in discordance to the popular assumption that there are no gender specific differences in virological treatment outcome of HAART.
Poster presentation: Purpose of the study To compare the virological, immunological and clinical response to three boosted double protease inhibitor (PI) regimens of saquinavir and ritonavir in combination with lopinavir (LOPSAQ), atazanavir (ATSAQ) or fosamprenavir (FOSAQ) without reverse transcriptase inhibitors (RTI) in HIV-positive patients with limited RTI treatment options. ...
The Video Vortex Reader is the first collection of critical texts to deal with the rapidly emerging world of online video – from its explosive rise in 2005 with YouTube, to its future as a significant form of personal media. After years of talk about digital convergence and crossmedia platforms we now witness the merger of the Internet and television at a pace no-one predicted. These contributions from scholars, artists and curators evolved from the first two Video Vortex conferences in Brussels and Amsterdam in 2007 which focused on responses to YouTube, and address key issues around independent production and distribution of online video content. What does this new distribution platform mean for artists and activists? What are the alternatives?
Verbs, nouns and affixation
(2008)
What explains the rich patterns of deverbal nominalization? Why do some nouns have argument structure, while others do not? We seek a solution in which properties of deverbal nouns are composed from properties of verbs, properties of nouns, and properties of the morphemes that relate them. The theory of each plus the theory of howthey combine, should give the explanation. In exploring this, we investigate properties of two theories of nominalization. In one, the verb-like properties of deverbal nouns result from verbal syntactic structure (a “structural model”). See, for example, van Hout & Roeper 1998, Fu, Roeper and Borer 1993, 2001, to appear, Alexiadou 2001, to appear). According to the structural hypothesis, some nouns contain VPs and/or verbal functional layers. In the other theory, the verbal properties of deverbal nouns result from the event structure and argument structure of the DPs that they head. By “event structure” we mean a representation of the elements and structure of a linguistic event, not a representation of the world. We refer to this view as the “event model”. According to the event model hypothesis, all derived nouns are represented with the same syntactic structure, the difference lying in argument structure – which in turn is critically related to event structure, in the way sketched in Grimshaw (1990), Siloni (1997) among others. In pursuing these lines of analysis, and at least to some extent disentangling their properties, we reach the conclusion that, with respect to a core set of phenomena, the two theories are remarkably similar – specifically, they achieve success with the same problems, and must resort to the same stipulations to address the remaining issues that we discuss (although the stipulations are couched in different forms).
This paper presents a constraint-based account of verb form alternations (Short and Long Forms) in Mauritian which, basically, is syntactically driven: Short Forms appear with Canonical complements while Long Forms are expected with no realized complements. However, in specific contexts, Long Forms are unexpectedly authorized in declaratives with canonical complements and expresses Verum Focus.
Verb agreement and epistemic marking : a typological journey from the Himalayas to the Caucasus
(2008)
Studies of the epistemic categories expressed in Tibetan auxiliaries and copulas have mostly compared the phenomena with mirativity marking, and this is no doubt the correct comparandum in diachronic research. However, synchronic descriptions are also often tempted to compare the relevant categories with agreement systems or similar reference-related structures, at least for expository purposes when explaining how the system works (e. g. Denwood 1999, Tournadre 1996, Goldstein et al. 1991).
The vegetation of Gibraltar Range National Park and adjoining parts of eastern Washpool National Park, 65 km east of Glen Innes (29° 31’S 152° 18’E) on the eastern escarpment of New South Wales is described. In total 124, 20m x 50m full vascular plant floristic sites were recorded and information from an additional 53 sites was collated. Thirteen vegetation assemblages are defined based on flexible UPGMA analysis of cover-abundance scores of all vascular plant taxa. Many of the vegetation communities are typical of what is found along the north eastern escarpment of NSW. Three communities are considered to be rare and two vulnerable. A total of 878 vascular plant taxa from 138 families were recorded, of which only 21 (2%) were of introduced origin and 81 (9%) were found to be of conservation significance. Pattern diversity, species density, species accumulation and average geographic range size, along with general measures of richness and diversity, were analysed for all communities. Each of the communities described varied considerably in the diversity attributes measured. Communities with a high number of shrubs had greater constancy between sites compared to those that contained a high number of closed forest species. The community from rock outcrops had the largest average geographical range size.
THIS PAPER WILL conduct a critical investigation of the famous argument against atomism first made by the 4th century CE Indian Buddhist philosopher Vasubandhu in his idealist treatise Vim. ´satik¯a Vij ˜naptim¯atrat ¯asiddhi (The Twenty Verses of Mind-Only). Although the present exposition will be more conceptual than historical in focus, it will first unfold the Abhidharmic Buddhist precursors of the Mind–Only epistemology. With the necessary background in place, I shall then attempt a rational reconstruction of the substance of Vasubandhu’s argument against atomism, rendering it intelligible to the modern reader by transposing it into contemporary philosophical idiom. Finally, I will employ the analysis of atomism and the external world in the Mind–Only school as a point of departure from which to further probe closely related concerns of Buddhist transcendental philosophy having to do with the nature of empirical knowledge, the power of skeptical argument, and the status of apperception. ...
Cytotoxic T-lymphocytes play an important role in the protection against viral infections, which they detect through the recognition of virus-derived peptides, presented in the context of MHC class I molecules at the surface of the infected cell. The transporter associated with antigen processing (TAP) plays an essential role in MHC class I–restricted antigen presentation, as TAP imports peptides into the ER, where peptide loading of MHC class I molecules takes place. In this study, the UL49.5 proteins of the varicelloviruses bovine herpesvirus 1 (BHV-1), pseudorabies virus (PRV), and equine herpesvirus 1 and 4 (EHV-1 and EHV-4) are characterized as members of a novel class of viral immune evasion proteins. These UL49.5 proteins interfere with MHC class I antigen presentation by blocking the supply of antigenic peptides through inhibition of TAP. BHV-1, PRV, and EHV-1 recombinant viruses lacking UL49.5 no longer interfere with peptide transport. Combined with the observation that the individually expressed UL49.5 proteins block TAP as well, these data indicate that UL49.5 is the viral factor that is both necessary and sufficient to abolish TAP function during productive infection by these viruses. The mechanisms through which the UL49.5 proteins of BHV-1, PRV, EHV-1, and EHV-4 block TAP exhibit surprising diversity. BHV-1 UL49.5 targets TAP for proteasomal degradation, whereas EHV-1 and EHV-4 UL49.5 interfere with the binding of ATP to TAP. In contrast, TAP stability and ATP recruitment are not affected by PRV UL49.5, although it has the capacity to arrest the peptide transporter in a translocation-incompetent state, a property shared with the BHV-1 and EHV-1 UL49.5. Taken together, these results classify the UL49.5 gene products of BHV-1, PRV, EHV-1, and EHV-4 as members of a novel family of viral immune evasion proteins, inhibiting TAP through a variety of mechanisms.
We show that the use of correlations for modeling dependencies may lead to counterintuitive behavior of risk measures, such as Value-at-Risk (VaR) and Expected Short- fall (ES), when the risk of very rare events is assessed via Monte-Carlo techniques. The phenomenon is demonstrated for mixture models adapted from credit risk analysis as well as for common Poisson-shock models used in reliability theory. An obvious implication of this finding pertains to the analysis of operational risk. The alleged incentive suggested by the New Basel Capital Accord (Basel II), amely decreasing minimum capital requirements by allowing for less than perfect correlation, may not necessarily be attainable.
This paper investigates the value of observed river discharge data for global-scale hydrological modeling of a number of flow characteristics that are e.g. required for assessing water resources, flood risk and habitat alteration of aquatic ecosystems. An improved version of the WaterGAP Global Hydrology Model (WGHM) was tuned against measured discharge using either the 724-station dataset (V1) against which former model versions were tuned or an extended dataset (V2) of 1235 stations. WGHM is tuned by adjusting one model parameter (γ) that affects runoff generation from land areas in order to fit simulated and observed long-term average discharge at tuning stations. In basins where γ does not suffice to tune the model, two correction factors are applied successively: the areal correction factor corrects local runoff in a basin and the station correction factor adjusts discharge directly the gauge. Using station correction is unfavorable, as it makes discharge discontinuous at the gauge and inconsistent with runoff in the upstream basin. The study results are as follows. (1) Comparing V2 to V1, the global land area covered by tuning basins increases by 5% and the area where the model can be tuned by only adjusting γ increases by 8%. However, the area where a station correction factor (and not only an areal correction factor) has to be applied more than doubles. (2) The value of additional discharge information for representing the spatial distribution of long-term average discharge (and thus renewable water resources) with WGHM is high, particularly for river basins outside of the V1 tuning area and in regions where the refined dataset provides a significant subdivision of formerly extended tuning basins (average V2 basin size less than half the V1 basin size). If the additional discharge information were not used for tuning, simulated long-term average discharge would differ from the observed one by a factor of, on average, 1.8 in the formerly untuned basins and 1.3 in the subdivided basins. The benefits tend to be higher in semi-arid and snow-dominated regions where the model is less reliable than in humid areas and refined tuning compensates for uncertainties with regard to climate input data and for specific processes of the water cycle that cannot be represented yet by WGHM. Regarding other flow characteristics like low flow, inter-annual variability and seasonality, the deviation between simulated and observed values also decreases significantly, which, however, is mainly due to the better representation of average discharge but not of variability. (3) The choice of the optimal sub-basin size for tuning depends on the modeling purpose. While basins over 60 000 km2 are performing best, improvements in V2 model performance are strongest in small basins between 9000 and 20 000 km2, which is primarily related to a low level of V1 performance. Increasing the density of tuning stations provides a better spatial representation of discharge, but it also decreases model consistency, as almost half of the basins below 20 000 km2 require station correction.
Using molecular tools to differentiate closely related blackfly species of the genus Simulium
(2008)
Biodiversity data are the foundation for conservation and managemet and taxonomy provides the reference system, skills and tools used to identify organisms. Species level data such as species richness, composition and diversity are common metrics. However, species level identification of organisms tends to be neglected within ecological work, especially within monitoring programmes, but also in conservation biology (Giangrande, 2003). This is because collection of species level data is time consuming, with identification of species-specific characteristics traditionally involving lengthy examination of samples using microscopy. In addition it is costly and species level data is almost impossible to collect if the taxa involved are species rich and difficult to identify (Báldi 1999). Other reasons why species level identification is neglected include the fact that sample collection can damage organisms, so diagnostic morphological features are lost, or that individuals may be in a life history stage or of a sex that does not have diagnostic morphological characteristics. Furthermore, the numbers of available expert taxonomists needed for species identification are in decline and have been for several decades. Species identification using molecular taxonomy where DNA is used as a marker is championed as a tool for resolving a range of morphological problems, such as the association of all life history stages, correlating male and female specimens to the same species and identifying partial specimens. Traditional taxonomy is built around morphological variations between species, with systematic inferences based upon shared physical characters. In molecular taxonomy on the other hand, proteins and genes are used to determine evolutionary relationships. ’DNA barcoding’ aims to provide an efficient method for species-level identification and it is thought that it will provide a powerful tool for taxonomic and biodiversity research (Hajibabaei et al. 2007). Cited strengths of a molecular based approach to species identification include the potential universality and objective nature of DNA data as taxonomic information, the usefulness of molecular data in animal groups characterized by morphological cryptic characters and the use of DNA sequence information to determine otherwise ‘unidentifiable’ biological material (such as incomplete specimens or immature specimens). Its aim is to increase the speed, precision and efficiency of field studies involving diverse and difficult to identify taxa and it has the potential to be automated to provide a rapid and consistently accurate supplementary identification system to traditional taxonomy. This project was a proof-of-concept study that investigated the feasibility of using DNA barcodes to differentiate closely related blackfly species of the genus Simulium. The longer term objective would be to apply such molecular approaches to organisms used in water quality monitoring and to biodiversity studies to provide a quick, robust but practical and cost effective tool for species identification. Great Britain is currently home to 33 morphospecies of blackfly many of which are morphologically close to other species and have been the cause of much systematic revision. In addition to evaluating the use of DNA barcodes in species identification, a non-destructive DNA extraction method was developed to preserve voucher pecimens that will allow a complete morphological classification to be carried after DNA extraction. Using molecular tools to differentiate closely related blackfly species of the genus Simulium v Finding an effective DNA barcode for an individual species involves accurate taxonomic identification and the retention of voucher specimens for future morphological studies. A rapid non-destructive method for DNA extraction from small insects was developed where no clean-up step was required prior to amplification and it was possible to extract DNA of sufficient quality in minutes retaining diagnostic morphological characteristics. For any molecular tool used for species discrimination, an important consideration is defining the specific genetic loci (e.g. the position of genes on a chromosome) to be monitored. All blackfly species in this study were successfully amplified with the standard barcoding coxI gene primer pair LCO1490 5'-GGT CAA CAA ATC ATA AAG ATA TTG G-3' and HCO2198 5'-TAA ACT TCA GGG TGA CCA AAA AAT CA-3' (Folmer et al. 1994) and we did not need to optimise or redesign the primer sequence.
This book is about emerging informal responses to unemployment in Malawi. To the bicycle taxi and handcart operators who are at the centre of the book, informality is a means for negotiating newer experiences and challenges associated with urbanisation. Jimu richly documents how informal economy activities continue to represent grassroots responses to widespread poverty, unavailability of meaningful employment opportunities and the failure of the state as well as the private and the non-state sectors to respond to escalating demand for formal sector jobs. Multiplicity of activities and straddling urban and rural opportunities are strategies employed to deal with opportunity impermanence and maximize returns from various low paying tasks and jobs. While these activities have grown without state support, state involvement is necessary to regulate and promote the welfare of the workers in the sector as well as that of the users of their service and the general public. This will require constructive engagement among the operators, users of their services, local government, and various state agencies.
This book explores the latent and sometimes overt undercurrents that have shaped the judicial history of Cameroon since the United Nations Trusteeship period. It is an insightful account by a critical observer privileged to serve as Director of Public Prosecutions and a judge in a post-independence context characterized by dual and often conflictual legal systems inspired by French and English colonialism. Justice Nyo'Wakai demonstrates how the conflict of judicial concepts, procedures and usages have led to the Francophone judicial system trying to impose itself on the Anglophone judicial system in Cameroon. Often reduced to toothless bulldogs by new constitutional dispensations informed largely by the French colonial legacy and Francophone realities, Anglophones have bemoaned the independence of the Judiciary identified with their Anglo-Saxon heritage. In the face of such domination and the highhandedness of the Executive, only mature cool headedness and the ability to bend over backwards on the part of Anglophone legal practitioners have contained the explosive situation and allowed for a gradual evolution of the Judicial System in Cameroon.
A wall-sized canvas by Twombly hanging in a purpose-built pavilion by Renzo Piano, commissioned by the Menil Collection in Houston, bears the scrawled inscription »Anatomy of Melancholy.« Untitled (Say Goodbye Catullus, to the Shores of Asia Minor) is the culminating statement of the artist’s maturity: begun in 1972, it was first exhibited in 1994. In this monumental cenotaph, Twombly’s painting displays phrases from Archilochos, Catullus, Keats and Rilke, as well as the title of Burton’s famous tome, worked into the fabric of the composition, integral to the iconic content. It is the aching heart of the select permanent exhibition of his oeuvre at the pavilion, known as the Twombly Gallery (www.menil.org/twombly.html). The austerity of Piano’s architectural setting, as well as the cunningly filtered Texas sunlight, makes this a site of cult, like the chapel containing the dark, final canvases of Mark Rothko, situated around the corner in the same urban grove of old oak. The setting is a modern Dodona, remote seat of the oaken oracle of Zeus, and it makes an evocative home for Twombly’s enigmatic constructions. These disarm conventional vocabularies of aesthetic response, drawing attention to words and snatches of verse as points of association and recognition. Looking at them involves siting a phrase such as »Anatomy of Melancholy« in other dimensions – in lines, patches, figures, colors.
We contrast two types of sentences with a preposed NP in French in a construction based HPSG grammar. They differ with respect to different grammatical aspects (syntax, semantics, pragmatics and phonology), which cluster uniquely into constructions. Both are colloquial, a reason why they have been recognized only recently (see Zribi-Hertz 1986, 1996, Sabio 1995, 2006). Accordingly, we rely for the data on spoken corpora (Corpaix, CFRP) as well as on our intuitions. Both constructions involve a partitioned semantics but this mode of composition is associated with different effects. One construction is characterized semantically: the preposed NP is the theme of a categorical proposition. The other construction is characterized pragmatically: it is associated with an independent declarative clause, a typical use of which is to signal a break in the interaction.
G. A. Cohen argues that John Rawls’s focus on the basic structure of society as the exclusive subject of social justice is misguided. I argue that two understandings of the notion of basic structure seem to be present in the literature, either in implicit or in explicit terms. (1) According to the first, the basic structure is to be equated with a given set of institutions: if they endorse the right principles of justice, the basic structure of society is just; (2) According to the second, a society has a just basic structure if and only if its institutional web manages to realize the relevant principles of justice as well it can. In (2), the institutional structure is not a given: different social circumstances call for different institutional solutions in order to achieve a just basic structure overall. The first part of the paper make a case for (2), and explores some of its normative implications. The second part asks which consequences this understanding may have for the idea of a global basic structure.
In this paper, we present an open-source parsing environment (Tübingen Linguistic Parsing Architecture, TuLiPA) which uses Range Concatenation Grammar (RCG) as a pivot formalism, thus opening the way to the parsing of several mildly context-sensitive formalisms. This environment currently supports tree-based grammars (namely Tree-Adjoining Grammars (TAG) and Multi-Component Tree-Adjoining Grammars with Tree Tuples (TT-MCTAG)) and allows computation not only of syntactic structures, but also of the corresponding semantic representations. It is used for the development of a tree-based grammar for German.
In this paper we present a parsing architecture that allows processing of different mildly context-sensitive formalisms, in particular Tree-Adjoining Grammar (TAG), Multi-Component Tree-Adjoining Grammar with Tree Tuples (TT-MCTAG) and simple Range Concatenation Grammar (RCG). Furthermore, for tree-based grammars, the parser computes not only syntactic analyses but also the corresponding semantic representations.
Objective: To develop comprehensive recommendations for the treatment of the various clinical manifestations of psoriatic arthritis (PsA) based on evidence obtained from a systematic review of the literature and from consensus opinion. Methods: Formal literature reviews of treatment for the most significant discrete clinical manifestations of PsA (skin and nails, peripheral arthritis, axial disease, dactylitis and enthesitis) were performed and published by members of the Group for Research and Assessment of Psoriasis and Psoriatic Arthritis (GRAPPA). Treatment recommendations were drafted for each of the clinical manifestations by rheumatologists, dermatologists and PsA patients based on the literature reviews and consensus opinion. The level of agreement for the individual treatment recommendations among GRAPPA members was assessed with an online questionnaire. Results: Treatment recommendations were developed for peripheral arthritis, axial disease, psoriasis, nail disease, dactylitis and enthesitis in the setting of PsA. In rotal, 19 recommendations were drafted, and over 80% agreement was obtained on 16 of them. In addition, a grid that factors disease severity into each of the different disease manifestations was developed to help the clinician with treatment decisions for the individual patient from an evidenced-based perspective. Conclusions: Treatment recommendations for the cardinal physical manifestations of PsA were developed based on a literature review and consensus between rheumatologists and dermatologists. In addition, a grid was established to assist in therapeutic reasoning and decision making for individual patients. It is anticipated that periodic updates will take place using this framework as new data become available.
Treatment predictors are important tools for the management of therapy in patients with chronic hepatitis B and C virus (HBV, HCV) infection. In chronic hepatitis B, several pretreatment parameters have been identified for prediction of virologic response to interferon alfa-based antiviral therapies or treatment with polymerase inhibitors. In interferon alfa and pegylated interferon alfa-treated patients, low baseline HBV DNA concentrations, HBV genotype A (B), and high baseline ALT levels are significantly associated with treatment response. In patients treated with nucleos(t)ide analogues, low baseline HBV DNA but not viral genotype is positively associated with virologic response. During treatment the best predictor of response is HBV DNA kinetics. Early viral suppression is associated with favourable virologic response and reduced risk for subsequent resistance mutations. For the current standard treatment with pegylated interferon alfa and ribavirin in patients with chronic hepatitis C, infection with HCV genotypes 2 and 3, baseline viral load below 400,000–800,000 IU/ml, Asian and Caucasian ethnicity, younger age, low GGT levels, absence of advanced fibrosis/cirrhosis, and absence of steatosis in the liver have been identified as independent pretreatment predictors of a sustained virologic response. After initiation of treatment, initial viral decline with undetectable HCV-RNA at week 4 of therapy (RVR) is the best predictor of sustained virologic response independent of HCV genotype.
Flexibility and constraints in migration and breeding of the barnacle goose Maximising fitness means, to a large extent, optimising management of time and energy. This thesis investigates aspects of timing and resource acquisition and utilisation in the barnacle goose Branta leucopsis during spring migration and reproduction. The barnacle goose population wintering along the Wadden Sea coast, and traditionally migrating via a stopover in the Baltic to its breeding sites in northern Russia, has shown some remarkable developments, among them, a geometric growth rate since the 1950s and a notable change in the timing of departure from the wintering grounds. Furthermore, long being regarded as an obligate Arctic breeder, within the past three decades this species has successfully colonised a wide variety of habitats at temperate latitudes, thereby shortening the migratory distances considerably or refraining from migration altogether. These remarkable changes raise questions about the flexibility of migratory and reproductive schedules. What are the costs and benefits of different migration strategies? And, given the context of global change, to what extent are animals capable of adapting to rapidly changing environments? In order to answer these questions we tracked migratory geese by satellite and with the help of data loggers and, furthermore, explored possible relationships of migratory behaviour and breeding performance. Another central thesis topic represents a within-species comparison of major life-history traits in populations breeding along a large ecological gradient from arctic to temperate environments. Fieldwork was conducted in arctic Russia, Sweden and The Netherlands.
Based on the microscopic transport model UrQMD in which hadronic and string degrees of freedom are employed, the HBT parameters in the longitudinal co-moving system are investigated for charged pion and kaon, and Λ sources in heavy ion collisions (HICs) at SPS and RHIC energies. In the Cascade mode, RO and the RL at high SPS and RHIC energies do not follow the mT-scaling, however, after considering a soft equation of state with momentum dependence (SM-EoS) for formed baryons and a density-dependent Skyrme-like potential for “pre-formed” particles, the HBT radii of pions and kaons and even those of Λs with large transverse momenta follow the mT-scaling function R=3/mT fairly well.
Transparent heads
(2008)
Head-complement structures in HPSG identify most properties of the phrase with those of the head daughter, except for that valence property (e.g. SUBCAT or COMPS) whose constraints are met by the non-head daughter(s) in the phrase. In this paper I present several phenomena in English syntax where idiosyncratic properties of a non-head daughter in a phrase must remain visible on the phrasal node, in order to preserve the strong version of the principle of locality in subcategorization. I propose a general formal mechanism to effect this occasional transparency of heads with respect to certain properties of their complements.
Transparent free relatives (TFRs) are constituents involving a WH-gap dependency in which the phrase that is predicated of the gap associated with 'what', not the wh-phrase itself, functions as the syntactic and semantic "nucleus." Previous analyses have either treated TFRs as a construction radically different from ordinary FRs, utilizing such mechanisms as parenthetical placement or grafts, or assimilated them to ordinary FRs, relying on abstract/empty head elements and a vague semantic relation holding between the gap and the predicate phrase. In this paper, we investigate how the puzzling properties of English TFRs can be accounted for in HPSG. The paper shows that the transparency effect of TRFs can be handled by feature inheritance from the nucleus predicate phrase, together with a constructional constraint that deals with the exocentric property of TFRs.
This paper is more about presenting phenomena and questions related to the concept of transitivity in Tibeto-Burman languages that I hope will stimulate discussion, rather than presenting strong conclusions. Sections 2 and 3 present alternative analyses of transitivity and questions about transitivity in two Tibeto-Burman languages I have worked on. In Section 4 I discuss some general issues about transitivity.
A data set of annual values of area equipped for irrigation for all 236 countries in the world during the time period 1900 - 2003 was generated. The basis for this data product was information available through various online data bases and from other published materials. The complete time series were then constructed around the reported data applying six statistical methods. The methods are discussed in terms of reliability and data uncertainties. The total area equipped for irrigation in the world in 1900 was 53.2 million hectares. Irrigation was mainly practiced in all the arid regions of the globe and in paddy rice areas of South and East Asia. In some temperate countries in Western Europe irrigation was practiced widely on pastures and meadows. The time series suggest a modest rate of increase of irrigated areas in the first half of the 20th century followed by a more dynamic development in the second half. The turn of the century is characterized by an overall consolidating trend resulting at a total of 285.8 million hectares in 2003. The major contributing countries have changed little throughout the century. This data product is regarded as a preliminary result toward an ongoing effort to develop a detailed data set and map of areas equipped for irrigation in the world over the 20th century using sub-national statistics and historical irrigation maps.
The relation between reality and language, the instability of language as a signification system, the representation crisis, and the borders of interpretation are the controversial issues that have engaged not only philosophers, but also many authors, translators, and literary critics. Some philosophers like Derrida accuse Western thinking of being obsessed with binary oppositions. In Derrida's view, Western tradition resorts to external references as God, truth, origin, center and reason to stabilize the signification system. Since these concepts lack an internal sense and there is no transcendental signified that can fix these signifiers, language turns to an instable system by means of which no fixed meaning can be created. Many authors like Beckett, Stoppard, and Caryl Churchill also noticed this impossibility of language. While Derrida's deconstructive approach to this crisis has an epistemological nature, these playwrights present an aesthetic solution by turning the deconstructive potential of language against itself in text and performance. This dissertation aims at exploring their performing methods and dramatic texts to demonstrate how their delogocentric strategies work. By analyzing their plays, I will examine if their use of signifiers that have no references in reality, intentional misconceptions, disintegrated subjectivities, decentered narratives, and experimental performances can help them undermine the prevailing logocentrism of Western thought. The examination of the change in aesthetic strategies from Beckett, who belongs to earlier stages of post modernism, to Caryl Churchill, who should perform in a globalized world with increasing dominance of speed and information, is another aim of this research. In my view,Beckett's obsession with unspeakable, absurdity, and disintegration of subjectivity develops to Stoppard's language games, metadrama, and anti-representation and culminates in Churchill's anti-narrative texts and pluralistic performances. The monophony of Beckett's dramatic texts is replaced by the polyphony of Churchill's performances, which are a mixture of theater, dance and music. However, all explored dramatic texts in this dissertation have something in common: they are language games, which have no claim on a faithful representation of reality or transcendental truth.
We present an analysis of adjuncts which, while based on the traditional binary adjunction schema, accommodates the phenomena that motivate the alternative Adjunct-as-Complement approach, such as adjunct extraction and case marking. The key idea is to enable the syntactic head (modifiee) to select for its modifier (adjunct) via the new valence feature dedicated for adjuncts, while leaving its values underspecified. Thus the selectional property of the modifiee percolates as well as that of the modifier, dispensing with the need to endow adjuncts a complement-like status.
Preposition-noun combinations (PNCs) are compositional and productive, but not fully regular. In school grammars and many theoretical approaches, PNCs are neglected, but they have recently been addressed in an HPSG analysis by Baldwin et al. (2006). After discussing some basic properties of PNCs, we show that statistical methods can be employed to prove that PNCs are indeed productive and compositional, which again implies that PNCs should receive a syntactic analysis. Such an analysis, however, is impeded by the limited regularity of the construction. We will point out why adding semantic conditions to syntactic schemata might be necessary but not sufficient and turn then to a framework which allows the derivation of syntactic (and semantic) generalizations from linguistic data without taking recourse to introspective judgments.
Buli is an Oti-Volta tone language spoken in Northern Ghana. This paper outlines the basic features of its tonal system and explores whether and in which way pitch respectively phonemic tone is approached as a means to indicate the pragmatic category of focus. Pursued are cases with focus-related surface tone changes as well as cases where pitch could help to disambiguate between broad and narrow foci. It is argued that focus is not consistently encoded by pitch or tone. Parallel findings for the closely related languages Kopen o (phonetic symbol)nni and Dagbani suggest that the apparent lack of significant prosodic focus signals in Buli might pertain to a larger group of tonal languages of the Gur family.
Plastids are complex plant organelles fulfilling essential physiological functions, such as photosynthesis and amino acid metabolism. The majority of proteins required for these functions are encoded in the nuclear genome and synthesized on cytosolic ribosomes as precursors, which are subsequently translocated across the outer and inner membrane of the organelle. Their targeting to the organelle is ensured by a so called transit peptide, which is specifically recognized by GTP-dependent receptors Toc159 and Toc34 at the cytosolic side of outer envelope. They cooperatively regulate the insertion of the precursor protein into the channel protein Toc75, thereby initiating the translocation process. Toc34 is regarded as the primary receptor, while Toc159 probably provides the driving force for the insertion. Precursor transfer is achieved by the physical interaction between both receptors in the GTP loaded state. One translocon unit, also called the Toc core complex, is formed by four molecules Toc34, four molecules Toc75 and one molecule Toc159. In the GDP-loaded state, Toc34 preferably forms homodimers, whose physiological function was investigated in the presented study. It could be shown that the dissociation of GDP and therefore the nucleotide exchange are inhibited by the homodimeric state of Toc34. Dissociation of the homodimer is induced by the recognition of a precursor protein, which renders the binding of GTP and subsequent interaction with Toc159 possible. Thus, the homodimeric conformation could reflect an inactive state of the translocon, preventing GTP consumption in the absence of a precursor protein. Both homodimerization as well as heterodimerization of the receptor are regulated by phosphorylation, which could be demonstrated by in vitro and in vivo approaches using atToc33 from Arabidopsis thaliana as a model system. Since the phosphorylated form of Toc34 cannot be assembled with the Toc core complex, it can be concluded that the interactions between GTPase domains not only regulate the transfer of precursor proteins, but also warrant the integrity of the translocon.
This talk concerns the copula system in Buli, a Ghanaian language which has also been attested in Bahia (Rodrigues 1935, Zwernemann 1968). Special focus will be put on the categorization of two copula-reminiscent elements for which I will propose a discoursepragmatic analysis.
Titabet and the Takumbeng
(2008)
Titabet and the Takumbeng is a play that relives the unprecedented political upheaval of the 1992 first ever multiparty presidential elections in Cameroon. Following the controversial elections, Bamenda - the stronghold of the main opposition party, the Social Democratic Front (SDF) - was plunged into a tense and intense civil disobedience campaign. The violence which ensued pitted SDF militants who claimed their victory was stolen against regime loyalists. The government reacted by imposing a curfew on Bamenda. The army that was dispatched to keep the peace committed ferocious kidnapping, rape, theft and torture, driving women, children and men into the arms of terror. Titabet the protagonist emerges as the leader of the oppressed. He and the sacred women's cult of Takumbeng were the only hope for the people. The sacred cleansing cult and Titabet's courageous resistance apparently brought an end to what would have been too devastating a tale to narrate. Kehbuma Langmia teaches courses in Mass Communications, Broadcast Journalism and Media Studies at Bowie State University. With previous degrees in fine arts, television and film, he earned his PhD in Mass Communication and Media Studies from Howard University. He also has an MA degree in theatre arts from the University of Yaound?, Cameroon. He is also a graduate from the Television Academy in Munich, Germany. Dr. Langmia writes, produces and directs independent productions, and serves as executive producer for students' television projects at Bowie State University.
Three-dimensional structure of the glycine-betaine transporter BetP by cryo electron crystallography
(2008)
The soil bacterium Corynebacterium glutamicum has five secondary transporters for compatible solutes allowing it to cope with osmotic stress. The most abundant of them, the transporter BetP, performs a high affinity uptake of glycine-betain when encountering hyperosmotic stress. BetP belongs to the betaine/carnitine/choline/transporter (BCCT) family, and is predicted to have twelve transmembrane helices with both termini facing the cytoplasm. The goal of this thesis is to facilitate understanding of BetP function by determining a three dimensional (3D) model of its structure. Two-dimensional (2D) crystallization of wild-type (WT) BetP has been successfully performed by reconstitution into a mixture of E. coli lipids and bovine cardiolipin, which resulted in vesicular crystals diffracting to 7.5 Å resolution (Ziegler, Morbach et al. 2004). Diffraction patterns of these crystals however showed unfocused spots, generally due to high mosaicity. Better results were obtained by using the constitutively active mutant BetPdeltaC45 in which the first 45 amino acids of the positively charged C-terminus were removed. BetPdeltaC45 crystals obtained under the same conditions for BetP WT were concluded to be pseudo crystals, based on the inconsistence of symmetry. These crystals had BetPdeltaC45 molecules randomly up/downwards inserted into membrane crystals, and cannot be used for structure determination, even though they diffracted up to 7 Å. The problem of pseudo crystal formation could be solved by changing the lipids used for 2D crystallization to a native lipid extract from C. glutamicum cells. This change of lipids improved the crystals to well-ordered packing with exclusive p121_b symmetry. To understand the role of lipids in crystal packing and order, lipids were extracted at different stages during crystallization, and identified by using multiple precursor ion scanning mass spectrometry. The results show that phosphatidyl glycerol (PG) 16:0-18:1 is the most dominant lipid species in C. glutamicum membranes, and that BetP has a preference for the fatty acid moieties 16:0-18:1. Crystallization with synthetic PG 16:0-18:1 proved that an excess of this lipid prevents pseudo crystal formation, but these crystals did not reach the quality as previously achieved by using the C. glutamicum lipids. Apart from the effect of lipids in crystallinity, the concentration and type of salts influenced crystal growth and morphology. High salt conditions (>400 mM LiCl or KCl) yielded tubular crystals, whereas low salt conditions (<300 mM LiCl, NaCl or KCl) led to formation of up to 10 µm large sheet-like crystals. The intermediate concentration gave a mixture of sheet-like and tubular crystals. In terms of resolution, sheets diffracted better than tubes. The sheet-like crystals used for 3D map reconstruction were obtained from a dialysis buffer containing 200 mM NaCl combined with using C. glutamicum lipids. Electron microscopic images were taken from frozen-hydrated crystals using a helium-cooled JEOL 300 SFF microscope or a liquid nitrogen-cooled FEI Tecnai G2 microscope at 300 kV, which allowed optimal data collection and minimized radiation damage to the sample. More than 1000 images of tilt angles up to 50° were taken and evaluated using optical diffraction of a laser beam. The best 200 images were processed with the MRC image processing software package, and 79 images from different tilt angles were merged to the final data set used for calculation of a 3D map at a planar resolution of 8 Å. The structure shows BetPdeltaC45 as a trimer with each monomer consisting of 12 transmembrane alpha-helices. Protein termini and loop regions could not be determined due to the limited resolution of the map. Six of the twelve helices line a central cavity forming a potential substrate-binding chamber. Each monomer shows a central cavity in different sizes and shapes. Thus, the constitutively active BetPdeltaC45 thus forms an unusual asymmetric homotrimer. BetP most likely reflects three different conformational states of secondary transporters: the cytoplasmically open (C), the occluded (O), and the periplasmically open (P) states. The C and O states are similar to BetP WT projection structure, while the P state is discrepant and highly flexible due to the shape and size of the central cavity as well as the lowest intensity of the density. The observation of the P state corresponds well to the constitutively active property of BetPdeltaC45. For the high resolution structure of the C and O states are available, this work presents the first structural information of the P state of a secondary transporter.
In this proceeding the emergence of a composite, adjoint-scalar field as an average over (trivial holonomy) calorons and anti-calorons is reviewed. This composite field acts as a background field to the dynamics of perturbative gluons, to which it is coupled via an effective, gauge invariant Lagrangian valid for temperatures above the deconfinement phase transition. Moreover a Higgs mechanism is induced by the composite field: two gluons acquire a quasi-particle thermal mass. On the phenomenological side the composite field acts as a bag pressure which shows a linear dependence on the temperature. As a result the linear rise with temperature of the trace anomaly is obtained and is compared to recent lattice studies.
In the field of strongly correlated electron systems, there is a long standing discussion on whether lattice degrees of freedom play a role for several physical phenomena, among them the Mott MI transition and charge-ordering transition. Charge-transfer salts of the ..-(BEDT-TTF)2X and (TMTCF)2X families have been revealed as model systemss for the study of the latter phenomena. The (TMTCF)2X salts have been recognized as model systems for studying correlation effects in 1D, while the (BEDT-TTF)-based materials for such studies in 2D. In this work, high-resolution dilatometry experiments were performed in order to address these issues. The main results obtained are summarized below. ...
In this paper we address the question of which transitive verbs allow there-insertion in Danish. We propose that two constraints have to be met in order for verbs to appear in Danish there-constructions. Firstly, as have been noted by others, an empty direct object position must be available. This constraint is not sufficient for restricting the set of verbs in there-constructions. We further propose a locative constraint. The transitive verbs allowing there-insertion will be shown to coincide with verbs that allow a locative analysis.
Reform of the securities class action is once again the subject of national debate. The impetus for this debate is the reports of three different groups – The Committee on Capital Market Regulation, The Commission on the Regulation of U.S. Capital Markets In the 21st Century, and McKinsey & Company. Each of the reports focuses on a single theme: how the contemporary regulatory culture places U.S. capital markets at a competitive disadvantage to foreign markets. While multiple regulatory forces are targeted by each report’s call for reform, each of the reports singles out securities class actions as one of the prime villains that place U.S. capital markets at a competitive disadvantage. The reports’ recommendations range from insignificant changes to drastic curtailments of private class actions. Surprisingly, these current-day cries echo calls for reform heeded by Congress in the not too distant past. Major reform of the securities class action occurred with the Private Securities Litigation Reform Act of 1995.5 Among the PSLRA’s contributions is the introduction of procedures by which the court chooses from among competing petitioners a lead plaintiff for the class. The statute commands that the petitioner with the largest financial loss suffered as a consequence of the defendant’s alleged misrepresentation is presumed to be the most adequate plaintiff. Thus, the lead plaintiff provision supplants the traditional “first to file” rule for selecting the suit’s plaintiff with a mechanism that seeks to harness to the plaintiff’s economic self interest to the suits’ prosecution. Also, by eliminating the race to be the first to file, the lead plaintiff provision seeks to avoid “hair trigger” filings by overly eager plaintiffs’ counsel which Congress believed too frequently gave rise to incomplete and insubstantially pled causes of action. The PSLRA also introduced for securities class actions a heightened pleading requirement8 as well as a bar to the plaintiff obtaining any discovery prior to the district court disposing of the defendants’ motions to dismiss. By introducing the requirement that allegations involving fraud must be plead not only with particularity, but also that the pled facts must establish a “strong inference” of fraud, the PSLRA cast aside, albeit only for securities actions, the much lower notice pleading requirement that has been a fixture of American civil procedure for decades. Substantive changes to the law were also introduced by the PSLRA. With few exceptions, joint and several liability was replaced by proportionate liability so that a particular defendant’s liability is capped by that defendant’s relative degree of fault. Similarly, contribution rights among co-violators are also based on proportionate fault of each defendant. Three years after the PSLRA, Congress returned to the topic again by enacting the Securities Litigation Uniform Standards Act;13 this provision was prompted by aggressive efforts of plaintiff lawyers to bypass the limitations, most notably the bar to discovery and higher pleading requirement, of the PSLRA by bringing suit in state court. Post-SLUSA, securities fraud class actions are exclusively the domain of the federal court. In this paper, we examine the impact of the PSLRA and more particularly the impact the type of lead plaintiff on the size of settlements in securities fraud class actions. We thus provide insight into whether the type of plaintiff that heads the class action impacts the overall outcome of the case. Furthermore, we explore possible indicia that may explain why some suits settle for extremely small sums – small relative to the “provable losses” suffered by the class, small relative to the asset size of the defendantcompany, and small relative to other settlements in our sample. This evidence bears heavily on the debate over “strike suits.” Part I of this paper sets forth the contemporary debate surrounding the need for further reforms of securities class actions. In this section, we set forth the insights advanced in three prominent reports focused on the competitiveness of U.S. capital markets. In Part II we first provide descriptive statistics of our extensive data set, and thenuse multivariate regression analysis to explore the underlying relationships. In Part III, we closely examine small settlements for clues to whether they reflect evidence of strike suits. We conclude in Part IV with a set of policy recommendations based on our analysis of the data. Our goals in this paper are more modest than the Committee Report, the Chamber Report and the McKinsey Report, each of which called for wide-ranging reforms: we focus on how the PSLRA changed securities fraud settlements so as to determine whether the reforms it introduced accomplished at least some of the Act’s important goals. If the PSLRA was successful, and we think it was, then one must be somewhat skeptical of the need for further cutbacks in private securities class action so soon after the Act was passed.
Their Champagne Party Will End! Poems in Honor of Bate Besong : Poems in Honor of Bate Besong
(2008)
In our present-day landscape in Central Europe major parts of the xylobiontic especially of the saproxylic beetle fauna belong to the group of endangered species assemblages (Speight 1989, Geiser 1994). Oaks, in Central Europe mainly Quercus robur and Q. petraea, are well known for their large number of associated insect species and harbour the highest beetle diversity, especially for dead wood inhabiting species, of all broadleaved tree species in this region (e.g. Palm 1959). A characteristic species associated with oaks in its life-cycle is the endangered Great Capricorn Cerambyx cerdo. C. cerdo is one of the protected species explicitly named in the Habitats Directive of the European Union with the goal of maintaining existing populations and establishing long-term survival (Council of the European Communities 1992). The last remaining colonised areas of this longhorn beetle in Central Europe are well known for the enormous number of very rare xylobiontic beetle species. Thus, we are interested in the following research questions: 1) Are there typical species associated with C. cerdo? 2) If so, what kind of relationship do these associated species have to C. cerdo from a nature conservation point of view?
A collection of six thought-provoking stories, four of which were award-winning-stories at the 1990 literary contest of the national Association of Cameroonian Poets and Writers (APEC). The stories are set in different localities in Africa and Cameroon in particular. The author in a lucid manner explores the theme of women lib- the African way in the lead story. Ebenye, the protagonist, representing the sharp-witted African woman cannot understand why she should cook food without tasting of it. So she decides to take the bold step of eating a piece of the python that she has been ordered to cook for the men of her community. The other stories tackle themes of corruption, poverty, alcoholism, endurance, love and more.
The study investigates the contribution of tactile and auditory feedback in the adaptation of /s/ towards a palatal prosthesis. Five speakers were recorded via electromagnetic articulography, at first without the prosthesis, then with the prosthesis and auditory feedback masked, and finally with the prosthesis and auditory feedback available. Tongue position, jaw position and acoustic centre of gravity of productions of the sound were measured. The results show that the initial adaptation attempts without auditory feedback are dependent on the prosthesis type and directed towards reaching the original tongue palate contact pattern. Speakers with a prosthesis which retracted the alveolar ridge retracted the tongue. Speakers with a prosthesis which did not change the place of the alveolar ridge did not retract the tongue. All speakers lowered the jaw. In a second adaptation step with auditory feedback available speakers reorganised tongue and jaw movements in order to produce more subtle acoustic characteristics of the sound such as the high amplitude noise which is typical for sibilants.
The Travail of Dieudonné
(2008)
Dieudonnes life is spun from the threads of one of Africa's grand moral dilemmas, in which personal responsibility is intertwined with the social catharsis occasioned by ambitions of dominance and ever diminishing circles. We encounter Dieudonne at the tail end of his service as 'houseboy' to the Toubaabys, a patronising expatriate couple. In the company of a lively assortment of characters and luring music at the Grand Canari Bar, Dieudonne recounts his life. As he peels layer after layer of his vicissitudes, he depicts the everyday resilience of the African on a continent caught in the web of predatory forces. Yet, this enchanting failure also celebrates the infinite capacity of the African to find happiness and challenge victimhood.
The Tragedy of Mr No Balance
(2008)
The timing of feedback to early visual cortex in the perception of long-range apparent motion
(2008)
When 2 visual stimuli are presented one after another in different locations, they are often perceived as one, but moving object. Feedback from area human motion complex hMT/V5+ to V1 has been hypothesized to play an important role in this illusory perception of motion. We measured event-related responses to illusory motion stimuli of varying apparent motion (AM) content and retinal location using Electroencephalography. Detectable cortical stimulus processing started around 60-ms poststimulus in area V1. This component was insensitive to AM content and sequential stimulus presentation. Sensitivity to AM content was observed starting around 90 ms post the second stimulus of a sequence and most likely originated in area hMT/V5+. This AM sensitive response was insensitive to retinal stimulus position. The stimulus sequence related response started to be sensitive to retinal stimulus position at a longer latency of 110 ms. We interpret our findings as evidence for feedback from area hMT/V5+ or a related motion processing area to early visual cortices (V1, V2, V3).
Freeze (1992) argued on the basis of data from several different languages that there is a close relationship between existential sentences (stating the existence of an entity) and locative sentences (stating the location of an entity). Freeze (1992) proposes that they are both derived from the same base structure and that the surface differences are rather due to the distinct information structures.This paper argues against this position with the data from Serbian existentials, which show clear syntactic differences from the locatives. Thus, the close relationship between existential and locative sentences that Freeze (1992) observes is conceptual, but not (necessarily) part of the syntax of the language. In order to account for the data, we propose that existential sentences originate from a different syntactic predication structure than the locative ones. The existential meaning arises, as we will show, from the interaction of this predication structure with the structure and meaning of the noun phrase.
Type I interferons (IFNs) signal for their diverse biological effects by binding a common receptor on target cells, composed of the two transmembrane IFNAR1 and IFNAR2 proteins. We have previously differentially enhanced the antiproliferative activity of IFN by increasing the weak binding affinity of IFN to IFNAR1. In this study, we further explored the affinity interdependencies between the two receptor subunits and the role of IFNAR1 in differential IFN activity. For this purpose, we generated a panel of mutations targeting the IFNAR2 binding site on the background of the IFNalpha2 YNS mutant, which increases the affinity to IFNAR1 by 60-fold, resulting in IFNAR2-to-IFNAR1 binding affinity ratios ranging from 1000:1 to 1:1000. Both the antiproliferative and antiviral potencies of the interferon mutants clearly correlated to the in situ binding IC(50) values, independently of the relative contributions of the individual receptors, thus relating to the integral lifetime of the complex. However, the antiproliferative potency correlated throughout the entire range of affinities, as well as with prolonged IFNAR1 receptor down-regulation, whereas the antiviral potency reached a maximum at binding affinities equivalent to that of wild-type IFNalpha2. Our data suggest that (i) the specific activity of interferon is related to the ternary complex binding affinity and not to affinity toward individual receptor components and (ii) although the antiviral pathway is strongly dependent on pSTAT1 activity, the cytostatic effect requires additional mechanisms that may involve IFNAR1 down-regulation. This differential interferon response is ultimately mediated through distinct gene expression profiling.
The degradation of the poly(A) tail is crucial for posttranscriptional gene regulation and for quality control of mRNA. Poly(A)-specific ribonuclease (PARN) is one of the major mammalian 3’ specific exo-ribonucleases involved in the degradation of the mRNA poly(A) tail, and it is also involved in the regulation of translation in early embryonic development. The interaction between PARN and the m7GpppG cap of mRNA plays a key role in stimulating the rate of deadenylation. Here we report the solution structures of the cap-binding domain of mouse PARN with and without the m7GpppG cap analog. The structure of the cap-binding domain adopts the RNA recognition motif (RRM) with a characteristic a-helical extension at its C-terminus, which covers the b-sheet surface (hereafter referred to as PARN RRM). In the complex structure of PARN RRM with the cap analog, the base of the N7-methyl guanosine (m7G) of the cap analog stacks with the solvent-exposed aromatic side chain of the distinctive tryptophan residue 468, located at the C-terminal end of the second b-strand. These unique structural features in PARN RRM reveal a novel cap-binding mode, which is distinct from the nucleotide recognition mode of the canonical RRM domains.
Sexual deception of male bees is one of the most remarkable mechanisms of pollination (Ackermann 1986, Proctor & al. 1996). Flowers of the orchid genus Ophrys mimic females of their pollinator species, usually bees and wasps, to attract males, which try to copulate with the flowers. During this so-called “pseudocopulation” the male removes the pollinia and transfers them to another flower to ensure pollination. Apart from visual and tactile cues, floral scent was shown to be most important for eliciting mating behaviour in males (Kullenberg 1961, Schiestl & al. 1999, Ayasse & al. 2003). Pollination in Ophrys is highly specific and usually each Ophrys species attracts only one pollinator species (Paulus & Gack 1990). The high degree of specialization provides the means of reproductive isolation between the intercrossable Ophrys-species (Ehrendorfer 1980). The complex odour-bouquets released by the flowers are species-specific and often consist of more than 100 different chemical compounds (Borg-Karlson & al. 1985, Ayasse 2006). Speciation in Ophrys-orchids may be brought about by changes in the pollinator attracting floral scent. The attraction of a new pollinator may act as a pre-zygotic isolation barrier (Stebbins 1970, Paulus & Gack 1990, Soliva & al. 2001). We investigated three sympatrically occuring Ophrys-species on Sardinia. O. chestermanii and O. normanii are endemic and are both pollinated by males of the bumblebee B. vestalis. O. tenthredinifera is pollinated by Eucera nigrilabris. There are different opinions concerning the taxonomic status of O. normanii. It has been described as an actual hybrid between O. chestermanii and O. tenthredinifera (Wood 1983). Paulus & Gack (1995) suggested that it is an own species, that either has developed from a hybrid between O. chestermanii and O. normanii or that has evolved by radiation from O. tenthredinifera. By conducting behavioural-tests with B. vestalis males, performing gas chromatographic analyses and electrophysiological studies we wanted to identify pollinator attracting scent and to clarify the taxonomic status of O. normanii.
Dicer and Drosha are the major enzymes involved in microRNA processing. Using siRNA targeting Dicer and Drosha, thereby downregulating a substantial number of microRNAs in EC, we demonstrate a crucial role of both enzymes in angiogenic processes. Interestingly, Dicer inhibition exerts more profound effects on processes like migration and viability of EC in comparison to Drosha inhibition. Moreover, Dicer effects in vivo angiogenesis, a process which is unaffected by Drosha. This discrepancy might be partially due to the involvement of Dicer in other cellular processes like heterochromatin formation and to the fact that Dicer and Drosha target mainly different subsets of microRNAs. In addition, we identified miR-92a as a novel endogenous repressor of the angiogenic program in EC, which impairs their angiogenic functions in vitro and in vivo. Consistent with these data, blocking miR-92a by systemic infusion of antagomirs enhances neovascularization and functional recovery after ischemia in vivo. At first sight, the anti-angiogenic function of miR-92a in EC appears to contradict the previously identified anti-apoptotic and pro-angiogenic activities of the miR-17~92 cluster in tumor cells. However, this apparent discrepancy might be well rationalized by a predominant function of miR-18a and miR-19a in tumor cells, which are responsible for the tumorigenic and non-cell autonomous pro-angiogenic functions of the miR-17~92 cluster. Instead, miR-92a expression is specifically upregulated in ischemic tissues and appears to cell-autonomously repress the angiogenic potential of EC. Among the various targets and verified regulated genes identified by microarray, we confirmed the downregulation of Integrin a5 in vitro and in vivo. The relevance of this miR-92a target is evidenced by severe vascular defects in the absence of Integrin a5. In addition, endothelial miR-92a interferes with the expression pattern of genes controlling key EC functions at various levels, some of which, e.g. eNOS, might be secondarily affected by directly targeted genes. Obviously, our data do not formally exclude effects of antagomir-92a on perivascular and other cell types, but surely include effects on EC. Regardless of this, the capacity of miR-92a to target various downstream effectors might be an advantage of miRNA-based therapeutic strategies and may overcome the limited therapeutic capacity of single growth factor or single gene therapies in ischemic diseases, since the highly organized process of vessel growth, maturation and functional maintenance is well known to require the fine-tuned regulation of a set of genes.
Objectives To examine the dose-response relationship between cumulative exposure to kneeling and squatting as well as to lifting and carrying of loads and symptomatic knee osteoarthritis (OA) in a population-based case-control study. Methods In five orthopedic clinics and five practices we recruited 295 male patients aged 25 to 70 with radiographically confirmed knee osteoarthritis associated with chronic complaints. A total of 327 male control subjects were recruited. Data were gathered in a structured personal interview. To calculate cumulative exposure, the self-reported duration of kneeling and squatting as well as the duration of lifting and carrying of loads were summed up over the entire working life. Results The results of our study support a dose-response relationship between kneeling/squatting and symptomatic knee osteoarthritis. For a cumulative exposure to kneeling and squatting > 10.800 hours, the risk of having radiographically confirmed knee osteoarthritis as measured by the odds ratio (adjusted for age, region, weight, jogging/athletics, and lifting or carrying of loads) is 2.4 (95% CI 1.1-5.0) compared to unexposed subjects. Lifting and carrying of loads is significantly associated with knee osteoarthritis independent of kneeling or similar activities. Conclusions As the knee osteoarthritis risk is strongly elevated in occupations that involve both kneeling/squatting and heavy lifting/carrying, preventive efforts should particularly focus on these "high-risk occupations".
Rezension von: Rainer Forst (2007) Das Recht auf Rechtfertigung. Elemente einer konstruktivistischer Theorie der Gerechtigkeit. Frankfurt am Main: Suhrkamp, 413 pp.
The unfolding discussion will focus on the internal representation of turbulent sounds in the phonology of German as well as pinpoint the special status of the prime defining the quality of turbulence. It will also be argued that this prime is capable of entering into special types of licensing relations, which results in specific phonetic manifestations of forms. We shall compare the effects of two processes attested in German: consonant degemination and spirantisation with a view to revealing the role of the turbulence-defining element in the two operations. Furthermore, our attention will be focused on the workings of the Obligatory Contour Principle which, as will be shown below, exerts decisive impact on prime interplay and consequently the phonetic realization of sounds and words. We shall see that segmental identity is contingent on the languagespecific interpretation of inter-element bonds.
Aware of the importance of prime autonomy in determining the manifestation of sounds, let us start with a brief outline of the fundamental segment structure principles offered by the theory of Phonological Government.
This paper proposes a representation for syllable structure in HPSG, building on previous work by Bird and Klein (1994), Höhle (1999), and Crysmann (2002). Instead of mapping segments into a a separate part of the sign where syllables are represented structurally, information about syllabification is encoded directly in the list of segments, the core of the PHONOLOGY value. Higher level prosodic phenomena can operate on a more abstract representation of the sequence of syllables derived from the syllabified segments list. The approach is illustrated with analyses of some word-boundary phenomena conditioned by syllable structure in French.
In this study I analysed past and recent Daphnia populations from Lake Constance and Greifensee. Herefore, I first established a set of microsatellite markers applicable to European Hyalodaphnia species (chapter 1). Primers were also identified for species specific fragment lengths. 32 markers were then available to characterize the resting egg banks of Daphnia galeata and D. hyalina. Chapter 2 presents the reconstruction of the taxonomic composition in these two ecologically different lakes. This part of my work shows that the eutrophication that occurred in both lakes in the mid of the last century has strongly influenced the Daphnia populations. In both lakes Daphnia galeata established and hybridized with the indigenous D. hyalina. Interspecific hybridization resulted in introgression on the mitochondrial and nuclear level. In chapter 3 resting eggs from the sediments of the 1960s, 1970s, 1980s, 1990s and 2000s were characterized with microsatellite markers. The aim was to specify the extent of interspecific hybridization and nuclear introgression assuming that the genetic exchange between both species has an impact on their adaptation to their habitat. In life history experiments D. galeata and D. galeata x hyalina clones hatched from different time periods showed significant differential responses to food quality. Therefore, the question had to be answered how the Daphnia resting egg bank and the planktonic population are connected. In chapter 4 hatching experiments were conducted to bridge this gap of scientific knowledge in the life cycle of cyclic parthenogenetic waterfleas. Only D. galeata individuals were able to establish a clonal lineage after maturity. All observed recombinant individuals did not reproduce at all or firstly went through another sexual phase of reproduction i.e. produced resting eggs. In order to compare the findings of chapter 4 with the taxon composition of the recent planktonic population of Daphnia in Lake Constance, samples were taken over one season (between May 2005 and September 2006). During the season, the taxonomic composition of Daphnia changes severely with D. galeata being most abundant during the warm season and D. hyalina in the cold season. Moreover, some individuals were detected, that did not follow this pattern. With mitochondrial analysis those individuals were identified as mitochondrial introgressants and processed to life history experiments. Significant differences in the somatic growth rate under different temperatures (5°C, 12.5°C and 20°C) were related to the origin of the mitochondrial genome rather than the nuclear taxonomic assignment of the individual.
The findings of this study show that all organisms exposed to rapid ecological changes and their microevolutionary reaction to those.
The reaction of consumer spending and debt to tax rebates – evidence from consumer credit data
(2008)
We use a new panel dataset of credit card accounts to analyze how consumer responded to the 2001 Federal income tax rebates. We estimate the monthly response of credit card payments, spending, and debt, exploiting the unique, randomized timing of the rebate disbursement. We find that, on average, consumers initially saved some of the rebate, by increasing their credit card payments and thereby paying down debt. But soon afterwards their spending increased, counter to the canonical Permanent-Income model. Spending rose most for consumers who were initially most likely to be liquidity constrained, whereas debt declined most (so saving rose most) for unconstrained consumers. More generally, the results suggest that there can be important dynamics in consumers’ response to “lumpy” increases in income like tax rebates, working in part through balance sheet (liquidity) mechanisms.
The Raped Amulet
(2008)
An extraordinary story of a young man from Africa who tries hard to reconcile the ways he had grown up with, and those he was experiencing in his host country - Great Britain. The story is set in Coventry, in the English Midlands and is told by Dion Ekpochaba, a postgraduate student at the University of Warwick. Dion, fresh from his motherland, Cameroon, loses an amulet, a cherished heritage of his ancestry and becomes desperate about the loss. He meets an elderly English man, Tom Jones who makes a startling revelation: the amulet had just been desecrated by his dog and thrown into the depths of a lake in the campus. Dion became so flabbergasted that Tom Jones thought he might have gone out of his mind. The two strangers tried to understand each other to no avail. However, the misfortunes of time turn the tides, resulting in a friendship, which provides grounds for mutual understanding and respect for each other's ways. Read on and spark your views on making the world a better place.
Poster presentation: Purpose of the study The aim of the Rainbow Cohort is to assess the tolerability and efficacy of initiating treatment with, or switching treatment to saquinavir (SQV) 500 mg film-coated tablet formulation. We present the final 48-week subgroup analysis of antiretroviral therapy (ART)-naïve patients. ...
The "quiet life hypothesis (QLH)" posits that banks enjoy the advantages of market power in terms of foregone revenues or cost savings. We suggest a unified approach to measure competition and efficiency simultaneously to test this hypothesis. We estimate bank-specific Lerner indices as measures of competition and test if cost and profit efficiency are negatively related to market power in the case of German savings banks.We find that both market power and average revenues declined among these banks between 1996 and 2006. While we find clear evidence supporting the QLH, estimated effects of the QLH are small from an economical perspective.
Central counterparties (CCPs) have increasingly become a cornerstone of financial markets infrastructure. We present a model where trades are time-critical, liquidity is limited and there is limited enforcement of trades. We show a CCP novating trades implements efficient trading behaviour. It is optimal for the CCP to face default losses to achieve the efficient level of trade. To cover these losses, the CCP optimally uses margin calls, and, as the default problem becomes more severe, also requires default funds and then imposes position limits.
The book examines the creative industries of Cameroon and Africa and makes bold the cultural triumphant assertion that Africa is home to some of the most diverse cultural patrimony and the most versatile creative professionals. It also discusses indigenous development models and questions the rationale for Eurocentric democratic paradigms which have partly contributed to the demise of a concrete democratic development entitlement in most African countries. Ngwane weaves both the cultural and political strands into a search for a homegrown development web which he calls 'glocalisation'. Ngwane's essays, most of which have animated debate and discourse in national newspapers, online blogs and International journals are lucid in their arguments, poignant in their ideological focus, rich in their non-fiction craftsmanship and urgent in their message delivery. The essays will make good reading for students of Africa studies, Development studies, Politics and Culture.
Cantharidin, which is mainly found in blister beetles (Coleoptera: Meloidae), is one of the most intensively studied natural products of insect (Dettner, 1997; McCormick & Carrel, 1987). The involvement of cantharidin in courtship behaviour has been already confirmed for certain canthariphilous insects (Eisner & al. 1996a,b; Frenzel & Dettner 1994; Frenzel & al. 1992; Schütz & Dettner, 1992; Hemp & al. 1999). The function and intrinsinc role of cantharidin in the courtship behaviour of Meloids has been never fully established. McCormick & Carrel (1987) only suggested that cantharidin might be used by female meloids when selecting a mate at close range. Pinto (1974, 1975) was, in fact, the first to consider male cuticular pores as being involved in the courtship behaviour of species from the genus Linsleya and Tegrodera (Meloidae). Based on morphology and chemical analyses of Cyaneolytta sp. (Coleoptera: Meloidae), we have hereby provided some further evidences that cantharidin may act as an infochemical in courtship behaviour of meloid beetles.
We performed a bioinformatical analysis of protein export elements (PEXEL) in the putative proteome of the malaria parasite Plasmodium falciparum. A protein family-specific conservation of physicochemical residue profiles was found for PEXEL-flanking sequence regions. We demonstrate that the family members can be clustered based on the flanking regions only and display characteristic hydrophobicity patterns. This raises the possibility that the flanking regions may contain additional information for a family-specific role of PEXEL. We further show that signal peptide cleavage results in a positional alignment of PEXEL from both proteins with, and without, a signal peptide.
The dynamics of many systems are described by ordinary differential equations (ODE). Solving ODEs with standard methods (i.e. numerical integration) needs a high amount of computing time but only a small amount of storage memory. For some applications, e.g. short time weather forecast or real time robot control, long computation times are prohibitive. Is there a method which uses less computing time (but has drawbacks in other aspects, e.g. memory), so that the computation of ODEs gets faster? We will try to discuss this question for the assumption that the alternative computation method is a neural network which was trained on ODE dynamics and compare both methods using the same approximation error. This comparison is done with two different errors. First, we use the standard error that measures the difference between the approximation and the solution of the ODE which is hard to characterize. But in many cases, as for physics engines used in computer games, the shape of the approximation curve is important and not the exact values of the approximation. Therefore, we introduce a subjective error based on the Total Least Square Error (TLSE) which gives more consistent results. For the final performance comparison, we calculate the optimal resource usage for the neural network and evaluate it depending on the resolution of the interpolation points and the inter-point distance. Our conclusion gives a method to evaluate where neural nets are advantageous over numerical ODE integration and where this is not the case. Index Terms—ODE, neural nets, Euler method, approximation complexity, storage optimization.
Taxonomic, systematic, and biogeography knowledge on the Palaearctic species of Pristaulacus Kieffer 1900 is summarized. Twenty-one valid species are recognized. The most important morphological characters taken into consideration are: shape, cuticular sculpture, and pubescence of head; index length/width of antennomeres; shape, sculpture and cuticular processes of mesosoma, especially of pronotum and mesonotum; number and shape of teeth on claw; shape and sculpture of metasoma; ovipositor length compared with wing and antenna length; and colour pattern (e.g., the dark spots on fore wing, and the colour of hind tarsus). Several characters of the genital capsule of the male were proved to be very useful for species identification, e.g., the shape of the paramere, volsella, cuspis, and digitus. Based on analysis of twenty-five morphological characters, eight species groups are recognized. The critical revision of the chorological data, including many new records, introduced relevant changes of the geographical distribution pattern of most species. Twelve species are restricted to the western part of the Palaearctic Region and eight species are restricted to its eastern part; only one species, P. gibbator, has a wider distribution, including both western and eastern parts of the Palaearctics.
The ACL 2008 Workshop on Parsing German features a shared task on parsing German. The goal of the shared task was to find reasons for the radically different behavior of parsers on the different treebanks and between constituent and dependency representations. In this paper, we describe the task and the data sets. In addition, we provide an overview of the test results and a first analysis.
Dendrite morphology, a neuron's anatomical fingerprint, is a neuroscientist's asset in unveiling organizational principles in the brain. However, the genetic program encoding the morphological identity of a single dendrite remains a mystery. In order to obtain a formal understanding of dendritic branching, we studied distributions of morphological parameters in a group of four individually identifiable neurons of the fly visual system. We found that parameters relating to the branching topology were similar throughout all cells. Only parameters relating to the area covered by the dendrite were cell type specific. With these areas, artificial dendrites were grown based on optimization principles minimizing the amount of wiring and maximizing synaptic democracy. Although the same branching rule was used for all cells, this yielded dendritic structures virtually indistinguishable from their real counterparts. From these principles we derived a fully-automated model-based neuron reconstruction procedure validating the artificial branching rule. In conclusion, we suggest that the genetic program implementing neuronal branching could be constant in all cells whereas the one responsible for the dendrite spanning field should be cell specific.
Production of reactive oxygen species (ROS) by the mitochondrial respiratory chain is considered to be one of the major causes of degenerative processes associated with oxidative stress. Mitochondrial ROS has also been shown to be involved in cellular signaling. It is generally assumed that ubisemiquinone formed at the ubiquinol oxidation center of the cytochrome bc(1) complex is one of two sources of electrons for superoxide formation in mitochondria. Here we show that superoxide formation at the ubiquinol oxidation center of the membrane-bound or purified cytochrome bc(1) complex is stimulated by the presence of oxidized ubiquinone indicating that in a reverse reaction the electron is transferred onto oxygen from reduced cytochrome b(L) via ubiquinone rather than during the forward ubiquinone cycle reaction. In fact, from mechanistic studies it seems unlikely that during normal catalysis the ubisemiquinone intermediate reaches significant occupancies at the ubiquinol oxidation site. We conclude that cytochrome bc(1) complex-linked ROS production is primarily promoted by a partially oxidized rather than by a fully reduced ubiquinone pool. The resulting mechanism of ROS production offers a straightforward explanation of how the redox state of the ubiquinone pool could play a central role in mitochondrial redox signaling.
The market reaction to legal shocks and their antidotes : lessons from the sovereign debt market
(2008)
This Article examines the market reaction to a series of legal events concerning the judicial interpretation of the pari passu clause in sovereign debt instruments. More generally, the Article provides insights into the reactions of investors (predominantly financial institutions), issuers (sovereigns), and those who draft bond covenants (lawyers), to unanticipated changes in the judicial interpretation of certain covenant terms.