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The elliptic, v2, triangular, v3, and quadrangular, v4, azimuthal anisotropic flow coefficients are measured for unidentified charged particles, pions, and (anti-)protons in Pb–Pb collisions at √sNN=2.76 TeV with the ALICE detector at the Large Hadron Collider. Results obtained with the event plane and four-particle cumulant methods are reported for the pseudo-rapidity range |η|<0.8 at different collision centralities and as a function of transverse momentum, pT, out to pT=20 GeV/c. The observed non-zero elliptic and triangular flow depends only weakly on transverse momentum for pT>8 GeV/c. The small pT dependence of the difference between elliptic flow results obtained from the event plane and four-particle cumulant methods suggests a common origin of flow fluctuations up to pT=8 GeV/c. The magnitude of the (anti-)proton elliptic and triangular flow is larger than that of pions out to at least pT=8 GeV/c indicating that the particle type dependence persists out to high pT.
The production cross section of electrons from semileptonic decays of beauty hadrons was measured at mid-rapidity (|y|<0.8) in the transverse momentum range 1<pT<8 GeV/c with the ALICE experiment at the CERN LHC in pp collisions at a center of mass energy √s=7 TeV using an integrated luminosity of 2.2 nb−1. Electrons from beauty hadron decays were selected based on the displacement of the decay vertex from the collision vertex. A perturbative QCD calculation agrees with the measurement within uncertainties. The data were extrapolated to the full phase space to determine the total cross section for the production of beauty quark–antiquark pairs.
The inclusive transverse momentum (pT) distributions of primary charged particles are measured in the pseudo-rapidity range |η|<0.8 as a function of event centrality in Pb–Pb collisions at √sNN=2.76 TeV with ALICE at the LHC. The data are presented in the pT range 0.15<pT<50 GeV/c for nine centrality intervals from 70–80% to 0–5%. The results in Pb–Pb are presented in terms of the nuclear modification factor RAA using a pp reference spectrum measured at the same collision energy. We observe that the suppression of high-pT particles strongly depends on event centrality. The yield is most suppressed in central collisions (0–5%) with RAA≈0.13 at pT=6–7 GeV/c. Above pT=7 GeV/c, there is a significant rise in the nuclear modification factor, which reaches RAA≈0.4 for pT>30 GeV/c. In peripheral collisions (70–80%), only moderate suppression (RAA=0.6–0.7) and a weak pT dependence is observed. The measured nuclear modification factors are compared to other measurements and model calculations.
Long-range angular correlations on the near and away side in p–Pb collisions at √sNN=5.02 TeV
(2013)
Angular correlations between charged trigger and associated particles are measured by the ALICE detector in p–Pb collisions at a nucleon–nucleon centre-of-mass energy of 5.02 TeV for transverse momentum ranges within 0.5<pT,assoc<pT,trig<4 GeV/c. The correlations are measured over two units of pseudorapidity and full azimuthal angle in different intervals of event multiplicity, and expressed as associated yield per trigger particle. Two long-range ridge-like structures, one on the near side and one on the away side, are observed when the per-trigger yield obtained in low-multiplicity events is subtracted from the one in high-multiplicity events. The excess on the near-side is qualitatively similar to that recently reported by the CMS Collaboration, while the excess on the away-side is reported for the first time. The two-ridge structure projected onto azimuthal angle is quantified with the second and third Fourier coefficients as well as by near-side and away-side yields and widths. The yields on the near side and on the away side are equal within the uncertainties for all studied event multiplicity and pT bins, and the widths show no significant evolution with event multiplicity or pT. These findings suggest that the near-side ridge is accompanied by an essentially identical away-side ridge.
The essay by Adorno and Horkheimer about The Culture Industry (in the volume Dialectic of Enlightment) represents for Alberto Abruzzese the starting point of a reasoning on the intellectuals' role, the crisis of humanistic and academic knowledge and the new “screen and network” society. The author uses The Culture Industry as a text on the western civilization's sunset and at the same time on the metamorphosis of mass cultural production. Abruzzese refers to those scholars who deepened these issues with passion and acumen. From Benjamin to Canetti, from Debord to Foucault, from Lukacs to McLuhan: Abruzzese analyses a whole research path in media culture with the frankness of a personal self-examination.
Selbständig Texte verschiedener Textsorten zu verfassen gehört zum Gegenstand jeglicher Schulausbildung und zu den Kernaufgaben des Deutschunterrichts. Welche Schreib- bzw. Textkompetenzen und Standards dafür notwendig sind, ist Gegenstand der aktuellen fachdidaktischen Diskussion (vgl. etwa Becker–Mrotzek/Schindler 2007, Feld-Knapp 2006, Feilke 2012). Die Sprachdidaktik/Fremdsprachendidaktik befasst sich mit praxisbezogenen Problemen, die das Erforschen der Lern- und Lehrprozesse betreffen. In der Gegenwart sind sich alle Sprachdidaktiker darüber einig, dass es ohne Texte keinen effektiven und sinnvollen Fremdsprachenunterricht gibt, denn die sprachliche Kommunikation und sprachliches Handeln vollzieht sich in Texten. Zu den elementaren Aufgaben der Hochschule gehört es also, diejenigen fachlichen und sprachlichen Kompetenzen ihrer Studierenden von Studienbeginn an gezielt zu fördern, die zum festen Bestandteil der Curricula gehören. Hierzu zählt die gezielte Entwicklung akademischer Schreib- und Textkompetenz in der Erst- bzw. Zweitsprache Deutsch. Gleichzeitig soll die Forschung auf diesem Gebiet weiter ausgebaut und verbessert werden. Im Folgenden sollen einige wichtige Dimensionen (Phänomene) der Text– und Schreibkompetenz diskutiert werden, die die Routinen der Studierenden in der schriftlichen Textproduktion fördern. Sie gehören nämlich zur unabdingbaren Voraussetzung ihrer professionellen Entwicklung...
We report a high precision measurement of the transverse single spin asymmetry AN at the center of mass energy √s=200 GeV in elastic proton–proton scattering by the STAR experiment at RHIC. The AN was measured in the four-momentum transfer squared t range 0.003⩽|t|⩽0.035 (GeV/c)2, the region of a significant interference between the electromagnetic and hadronic scattering amplitudes. The measured values of AN and its t-dependence are consistent with a vanishing hadronic spin-flip amplitude, thus providing strong constraints on the ratio of the single spin-flip to the non-flip amplitudes. Since the hadronic amplitude is dominated by the Pomeron amplitude at this √s, we conclude that this measurement addresses the question about the presence of a hadronic spin flip due to the Pomeron exchange in polarized proton–proton elastic scattering.
240 Jahre nach dem Tod des großen Frankfurter Forschers : sie
entziffert Senckenbergs Tagebücher
(2013)
The three-dimensional structure determination of RNAs by NMR spectroscopy relies on chemical shift assignment, which still constitutes a bottleneck. In order to develop more efficient assignment strategies, we analysed relationships between sequence and 1H and 13C chemical shifts. Statistics of resonances from regularly Watson– Crick base-paired RNA revealed highly characteristic chemical shift clusters. We developed two approaches using these statistics for chemical shift assignment of double-stranded RNA (dsRNA): a manual approach that yields starting points for resonance assignment and simplifies decision trees and an automated approach based on the recently introduced automated resonance assignment algorithm FLYA. Both strategies require only unlabeled RNAs and three 2D spectra for assigning the H2/C2, H5/C5, H6/C6, H8/C8 and H10/C10 chemical shifts. The manual approach proved to be efficient and robust when applied to the experimental data of RNAs with a size between 20 nt and 42 nt. The more advanced automated assignment approach was successfully applied to four stemloop RNAs and a 42 nt siRNA, assigning 92–100% of the resonances from dsRNA regions correctly. This is the first automated approach for chemical shift assignment of non-exchangeable protons of RNA and their corresponding 13C resonances, which provides an important step toward automated structure determination of RNAs.
Credit boom detection methodologies (such as threshold method) lack robustness as they are based on univariate detrending analysis and resort to ratios of credit to real activity. I propose a quantitative indicator to detect atypical behavior of credit from a multivariate system - a monetary VAR. This methodology explicitly accounts for endogenous interactions between credit, asset prices and real activity and detects atypical credit expansions and contractions in the Euro Area, Japan and the U.S. robustly and timely. The analysis also proves useful in real time.
Eine empirische Arbeit, auf Basis der teilnehmenden Beobachtung nach Malinowski, bei Dealern im bürgerlichen Milieu. Der Fokus liegt auf einer ethnologischen Herangehensweise; d.h., dass am Leben der Dealer weitestgehend und möglichst vorurteilsfrei teilgenommen wird. Hieraus ergeben sich Einblicke, die mit anderen Forschungsmethoden nicht möglich sind.
We show that the presence of high frequency trading (HFT) has significantly mitigated the frequency and severity of end-of-day price dislocation, counter to recent concerns expressed in the media. The effect of HFT is more pronounced on days when end of day price dislocation is more likely to be the result of market manipulation on days of option expiry dates and end of month. Moreover, the effect of HFT is more pronounced than the role of trading rules, surveillance, enforcement and legal conditions in curtailing the frequency and severity of end-of-day price dislocation. We show our findings are robust to different proxies of the start of HFT by trade size, cancellation of orders, and co-location.
We examine the impact of stock exchange trading rules and surveillance on the frequency and severity of suspected insider trading cases in 22 stock exchanges around the world over the period January 2003 through June 2011. Using new indices for market manipulation, insider trading, and broker-agency conflict based on the specific provisions of the trading rules of each stock exchange, along with surveillance to detect non-compliance with such rules, we show that more detailed exchange trading rules and surveillance over time and across markets significantly reduce the number of cases, but increase the profits per case.
‘Çeviribilim’ olarak adlandırılan araştırma alanında geride bırakılan son birkaç on yıla bakıldığında bilim ve kültürde yaşanan kimi olay ve gelişmelerin Almanya ve Avrupa merkezli ‘çeviri’ araştırmalarına yön verdiği söylenebilir. Bilişim konusundaki gelişmeler, eylem kuramının ve iletişimbilimin dönüşümü, işlevselciliğin yeniden yorumlanması; edimbilimin evrimi, bilişsel felsefedeki yeni gelişmeler, yeni bakış açılarını ortaya çıkarmıştır. Bu bakış açılarının birer sonucu olarak ‘çeviribilim’ olarak adlandırılan çeviri odaklı düşünmelerde yeni ağırlık noktaları ve buradan hareketle ‘kuram’ ya da ‘yaklaşım’ biçiminde ifade edilen çalışmalar oluşmuştur. Kuramcıların belli olgulara bakış açıları onların nesneye yaklaşım biçimlerini ve algılarını etkiler. Çeviri olgusuna dönük savlar ortaya koyan kuramcılara bakıldığında ‘olgular bütünü’ ya da ‘karmaşık olgu’ olarak değerlendirilebilecek bir olguya dair farklı yaklaşım ve tutum alışlardan söz edilmektedir. Bu noktada, karmaşık bir dünyayı temsil eden çok boyutlu bir olgu olarak ‘çeviri’nin kendine özgü niteliği, 90’lı yıllardan başlayarak günümüze kadar gelen süreçte, ‘çeviribilimin’ psikoloji alanı ile ilişkilendirilmesi sonucunu beraberinde getirmiştir. Bu çerçevede araştırmaların ilgisi, ‘çeviri gerçekliği’nde merkeze oturtulan ‘çevirmen’e yönelmiş, ‘çevirmen’in bir ürün olarak ‘çeviri’yi hangi tutum ve ruhsal duruma dayanarak ortaya koyduğuna ilişkin araştırma yönelimi önem kazanmıştır. “Belli koşullar altında bir çevirmeni belli bir çeviri çıktısına, diğer bir deyişle belli bir çeviri metne götüren olay örgüsü nedir?” ya da “çeviri sırasında hangi zihinsel işlemler gerçekleşiyor?” gibi sorulardan hareket eden yaklaşımların bir üst bakışla ele alınması bu çalışmanın ana konusunu oluşturmaktadır.
Das lebensbegleitende Lernen – sei es institutionell oder nicht institutionell – dient offen oder verdeckt einer bestimmten Absicht. Von der vorbestimmten Absicht aus betrachtet wird jedes Gelernte einer Prüfung unterzogen. Im Rahmen dieses Referats wird eine literarische Prüfung eines DaF-Seminars mit Vorbedingungen und Nachwirkungen diskutiert. In wissenschaftlichen Arbeiten beschäftigt man sich überwiegend mit der Rolle der Lehrenden, der Lernenden und mit der Unterrichtsgestaltung. All diese Themen sind für den Unterricht, speziell für den Fremdsprachenunterricht, unumstritten. Ebenso von Bedeutung sollte die Bewertung der vermittelten bzw. angeeigneten Fremdsprachenkenntnisse sein. Das Referat wird das Prüfungsverfahren eines fremdsprachlichen Literaturseminars kritisch darstellen. Wichtiges Kriterium bei der Bewertung der Prüfungsergebnisse ist die Reflexion von produktiven Verfahren. Ausgehend vom 'produktiven Verfahren', werden Multiple Choice und offene Fragen – sei es Abfragen von gelernten Inhalten oder allgemeinen Kenntnissen in individuellen Aussagen – kontrastiv diskutiert. Das bevorzugte Prüfungsverfahren wird nach den Gütekriterien Validität, Reliabilität und Objektivität überprüft.
Else Lasker-Schüler, Tino und Jussuf, viele Namen, die sie sich selber gab, führen zu einer einzigartigen, starken Frau, die ihr Leben in Literatur umgesetzt hat. Zu einer Frau, die einer der führenden expressionistischen Persönlichkeiten wurde, ihr Leben literarisierend vermarktete und doch im wahrsten Sinne des Wortes nie mit sich und der Umwelt zufrieden werden konnte und auch werden wollte.
The present study is about note taking techniques in consecutive translation and their application. In the beginning we analyzed in the relevant literature, consecutive interpretation among translation techniques, note taking, and the function and features of note taking in consecutive translation. Afterwards, we presented the problems that an interpreter might face in consecutive interpretation with concrete examples and provided possible methods and techniques to overcome these. Hereby, we emphasized that note taking techniques are an important feature to remember while translating and its function as a memory supporting tool. In the last section we discussed the roles of a consecutive interpreter and emphasized within this context the usage of the earlier mentioned note taking techniques (use of acronyms, signs, and symbols). Moreover we highlighted that each interpreter has to have his/her own techniques and improve these continuously.
Characterization of mouse NOA1 : subcellular localizaion, G-Quadruplex binding and proteolysis
(2013)
Mitochondria contain their own protein synthesis machinery with mitoribosomes that are similar to prokaryotic ribosomes. The thirteen proteins encoded in the mitochondrial genome are members of the respiratory chain complexes that generate a proton gradient, which is the electromotoric force for ATP synthesis.
NOA1 (Nitric Oxide Associated Protein-1) is a nuclear encoded GTPase that positively influences mitochondrial respiration and ATP production. Although a role in mitoribosome assembly was assigned to NOA1 the underlying molecular mechanism is poorly understood. This work shows that the multi-domain protein NOA1 serves multiple purposes for the function of mitochondria. NOA1 is a dual localized protein that makes a detour through the nucleus before mitochondrial import. The nuclear shuttling is mediated by a nuclear localization signal and the now identified nuclear export signal. SELEX (Systemic Evolution of Ligands by Exponential Enrichment) analysis revealed a G-quadruplex binding motif that characterizes NOA1 as ribonucleoprotein (RNP). G-quadruplex binding was coupled to the GTPase activity and increased the GTP hydrolysis rate. The sequence of localization events and the identification of NOA1 being a RNP lead to the discussion of an alternative import pathway for RNPs into mitochondria. The short-lived NOA1 contains ClpX recognition motifs and is specifically degraded by the mitochondrial matrix protease ClpXP. NOA1 is the first reported substrate of ClpXP in higher eukaryotes and augments the contribution of the ClpXP protease for mitochondrial metabolism. To assess the direct action of NOA1 on the mitoribosome co-sedimentation assays were performed. They showed that the interaction of NOA1 and the mitoribosome is dependent on the GTPase function and the nascent peptide chain. In vitro, NOA1 facilitated the membrane insertion of newly translated and isotope labeled mitochondrial translation products into inverted mitochondrial inner membrane vesicles. In conclusion, NOA1 is a G-quadruplex-RNP that acts as mitochondrial membrane insertion factor for mtDNA-encoded proteins.
This thesis provides a comprehensive model of the molecular function of NOA1 and is the basis for future research. The identification of NOA1 as ClpXP substrate is a major contribution to the field of mitochondrial research.
Considering migration to be a gendered experience, in this article, I focus on the gender-specific processes of cultural production and tradition-building in the context of migration and pose the following questions: What happens to gendered biographies in a migration context? What role does gender play with respect to the rupture, renewal, or building of traditions in migration processes? Drawing on the basic assumption that "gender fundamentally organizes the social relations and structures," which in turn shapes the processes of migration (cf. Curran, 2006, 199), I make use of the concept of gender defined as an accomplishment, as a performance in daily interaction practices:
When we view gender as an accomplishment, an achieved property of situated conduct, our attention shifts from matters internal to the individual, and focuses on interactional and, ultimately, institutional arenas. (West et al., 1987, 126)