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The A-NOT-A structure is one way to express polar questions in Mandarin Chinese. The present study provides a constraint-based analysis of A-NOT-A questions in Mandarin Chinese within the framework of HPSG (Pollard & Sag, 1994) and MRS (Copestake et al., 2005). We propose two possible approaches to analysing the A-NOT-A structure — a morphological/lexical approach as well as a syntactic approach — and illustrate their implementation, as well as their respective strengths and weaknesses.
This paper provides an analysis of the Cantonese post-verbal particle "can1". We argue that can1 is a resultative particle encoding the meaning of 'a small degree'. It is only compatible with (i) verbs that entail a specific resulted state of the theme argument and (ii) verbs that encode a potential change of the theme argument (Beavers, 2011, 2013). Assuming that change of state verbs involve a property scale (Hay et al., 1999), we propose that "can1" makes the property scale bounded by providing an end-point. This endpoint, however, is not precise. It consists of a range of values on the lower end of the scale.
This paper addresses some Japanese constructions where the predicate heading a subordinate clause – specifically, a suspensive form of IU 'say', OMOU 'think' or SURU 'do' – appears to be elided. I will discuss that these elliptic constructions are subject to certain syntactic and interpretative constraints which do not apply to their non-elliptic counterparts, and develop an SBCG-analysis that aims to model these constraints without postulating a covert element in the place of the missing verb.
A singular countable noun in English normally needs a determiner and they should agree in number. However, there is a type of noun phrase, such as 'these sort of skills', which does not conform to this generalisation. As a singular countable common noun, the noun 'sort' requires a determiner, but there is an agreement mismat ch here: 'sort' is singular but the determiner is plural. Rather, the determiner agrees with the NP after the preposition 'of'. There are several po ssible analyses that might be proposed, but the best analysis is the one in which 'sort' and the preposition 'of' are 'functors', non-heads selecting heads.
This paper deals with the encoding of affectedness in Abui, a Papuan language of Indonesia. Abui is a head-marking language of the rare type where the verbs are marked for their undergoer arguments (So, O) formally split into several subtypes. This marking has been previously analyzed as a type of semantic alignment sensitive among others to affectedness. Affectedness is understood here as a scalar property delimiting the predicate (following Tenny 1987 and Beavers 2011). The paper explores the structure of the affectedness scale for Abui, comparing the functions and meaning of three types of person prefix paradigms. We show that verbs with similar meaning, encoding the same type of change (in Beavers’ terms) can differ in their entailments. We also show that there may be additional dimensions in which affectedness can be measured, such as affected agents, and that the interpretation of the degree on the affectedness scale interacts with instigator’s (source of force) status on the referential hierarchy. While human agents in some cases allow lower degrees of affectedness, the inanimate forces select the maximal degree reading. We conclude, that despite a considerable amount of fluidity of marking (Fedden et al. 2013, 2014), the shifts in degree of affectedness can be predicted as lowering of the degree stipulated for the predicate.
Function words like prepositions, adverbs, particles, and complementizers may be assigned more than one category due to the different functions they can have. In this paper I present an approach that assumes unique lexical entries for words that are assigned more than one category. I will focus on prepositions and how they may function as heads of modifying PPs, selected prepositions, or as particles.
Multi-word expressions (MWEs) are challenging for grammatical theories and grammar development since they blur the traditional distinction between the lexicon and the grammar, and vary in the degree of idiosyncrasy with respect to their semantic, syntactic, and morphological behavior. Nevertheless, the need to incorporate MWEs into grammars is unquestionable, especially in light of estimates claiming that MWEs account for approximately half of the entries in the lexicon. In this study we focus on verbal MWEs in Modern Hebrew: we consider different types of this class of MWEs, and propose an analysis in the framework of HPSG. Moreover, we incorporate this analysis into HeGram, a deep linguistic processing grammar of Modern Hebrew.
This paper describes some of our attempts in extending Zhong, a Chinese HPSG shared-grammar. New analyses for two Chinese specific phenomena, reduplication and the SUO-DE structure, are introduced. The analysis of reduplication uses lexical rules to capture both the syntactic and semantic properties (amplification in adjectives and diminishing in verbs). Words showing non-productive reduplication are entered in the lexicon, and the semantic relations will be captured in an external resource (the Chinese Open Wordnet). The SUO-DE structure constrains the meanings of relative clauses to a gapped-object interpretation.
Standard accounts of HPSG assume a distinction between morphology and syntax. However, despite decades of research, no cross-linguistically valid definition of 'word' has emerged (Haspelmath, 2010), suggesting that no sharp distinction is justified. Under such a view, the basic units are morphemes, rather than words, but it has been argued this raises problems when analysing phenomena such as zero inflection, syncretism, stem alternations, and extended exponence. We argue that with existing HPSG machinery, a morpheme-based approach can in fact deal with such issues. To illustrate this, we consider Slovene nominal declension and Georgian verb agreement, which have both been used to argue against constructive morpheme-based approaches. We overcome these concerns through use of a type hierarchy, and give a morpheme-based analysis which is simpler than the alternatives. Furthermore, we can recast notions from Word-and-Paradigm morphology, such as 'rule of referral' and 'stem space', in our framework. We conclude that using HPSG as a unified morphosyntactic theory is not only feasible, but also yields fruitful insights.
This paper describes an analysis for possessive idioms in English (e.g. 'I twiddle my thumbs' ''I am idle''). The analysis relies on matching at the semantic level, to allow for syntactic variation. It has been implemented in the English Resource Grammar, and tested by parsing a subset of the British National Corpus. In addition to the syntactic analysis, we have linked the idioms to entries in the Princeton Wordnet, to allow for further lexical semantic analysis.
This paper addresses the issue of phonologically null elements in HPSG by providing an analysis of the construction exemplified by NPs such as 'the rich', 'the beautiful', 'the unemployed', which lack an overt noun. The properties of this construction are explored in detail, and a number of approaches described: in particular approaches which posit a phonologically empty noun, and constructional approaches. It is shown that a constructional approach is empirically superior. This is interesting, theoretically, because empirical differences between such approaches have proved elusive hitherto.
This paper aims to propose an HPSG analysis for simple and construct-state noun phrases in Modern Standard Arabic (MSA). To the best of my knowledge, there are no major HPSG analyses of MSA noun phrases (NPs). A parallel phenomenon in Hebrew has been discussed quite extensively in the same framework by Wintner (2000). Most of the discussion will be devoted for the construct-state noun phrase in which the order of the elements within it is NP AP PP. Three different analyses will be outlined within the HPSG framework: the extra complement analysis, the special complement analysis, and the head-adjunct-complement analysis. These analyses will be evaluated and it will be concluded that the last analysis seems to be the best and the most promising approach to Arabic NPs.
Development of maximally reusable grammars: Parallel development of Hebrew and Arabic grammars
(2015)
We show how linguistic grammars of two different yet related languages can be developed and implemented in parallel, with language-independent fragments serving as shared resources, and language-specific ones defined separately for each language. The two grammars in the focus of this paper are of Modern Hebrew and Modern Standard Arabic, and the basic infrastructure, or core, of the grammars is based on "standard" HPSG. We identify four types of relations that exist between the grammars of two languages and demonstrate how the different types of relations can be implemented in parallel grammars with maximally shared resources. The examples pertain to the grammars of Modern Hebrew and Modern Standard Arabic, yet similar issues and considerations are applicable to other pairs of languages that have some degree of similarity.
The acceptance-corrected dielectron excess mass spectra, where the known hadronic sources have been subtracted from the inclusive dielectron mass spectra, are reported for the first time at mid-rapidity |yee|<1 in minimum-bias Au+Au collisions at sNN−−−−√ = 19.6 and 200 GeV. The excess mass spectra are consistently described by a model calculation with a broadened ρ spectral function for Mee<1.1 GeV/c2. The integrated dielectron excess yield at sNN−−−−√ = 19.6 GeV for 0.4<Mee<0.75 GeV/c2, normalized to the charged particle multiplicity at mid-rapidity, has a value similar to that in In+In collisions at sNN−−−−√ = 17.3 GeV. For sNN−−−−√ = 200 GeV, the normalized excess yield in central collisions is higher than that at sNN−−−−√ = 17.3 GeV and increases from peripheral to central collisions. These measurements indicate that the lifetime of the hot, dense medium created in central Au+Au collisions at sNN−−−−√ = 200 GeV is longer than those in peripheral collisions and at lower energies.
Di-hadron correlations with identified leading hadrons in 200 GeV Au+Au and d+Au collisions at STAR
(2015)
The STAR collaboration presents for the first time two-dimensional di-hadron correlations with identified leading hadrons in 200 GeV central Au+Au and minimum-bias d+Au collisions to explore hadronization mechanisms in the quark gluon plasma. The enhancement of the jet-like yield for leading pions in Au+Au data with respect to the d+Au reference and the absence of such an enhancement for leading non-pions (protons and kaons) are discussed within the context of a quark recombination scenario. The correlated yield at large angles, specifically in the \emph{ridge region}, is found to be significantly higher for leading non-pions than pions. The consistencies of the constituent quark scaling, azimuthal harmonic model and a mini-jet modification model description of the data are tested, providing further constraints on hadronization.
The ALICE Collaboration measures the production of low-mass dielectrons in pp, p-Pb and Pb-Pb collisions at the LHC. The main detectors used in the analyses are the Inner Tracking System, Time Projection Chamber and Time-Of-Flight detector, all located around mid-rapidity. The production of virtual photons relative to the inclusive yield in pp collisions is determined by analyzing the dielectron excess with respect to the expected hadronic sources. The direct photon cross section is then calculated and found to be in agreement with NLO pQCD calculations. Results from the invariant mass analysis in p-Pb collisions show an overall agreement between data and hadronic cocktail. In Pb-Pb collisions, uncorrected background-subtracted yields have been extracted in two centrality classes. A feasibility study for LHC run 3 after the ALICE upgrade indicates the possibility for a future measurement of the early effective temperature.
Background: Hundreds of West African healthcare workers (HCW) have become ill with Ebola virus disease (EVD) and died during the recent outbreak. The occurrence of occupational infections in laboratories could be due to the lack of use of personal protective equipment, the failure to implement specific regulations about the use of equipment and how to work with hazardous materials. Our study attempted to assess the information as well as training level of HCW of a German high level isolation unit and their concern over an occupationally acquired EVD.
Methods: During the recent Ebola virus outbreak a survey was conducted among HCWs, using an anonymous questionnaire.
Results: Although 70% of our total study population stated that they have all the information needed to care for Ebola patients, only 18.2% of laboratory workers and 29.4% of the HCW of the virology department felt sufficiently trained. The HCW rated the Internet (64.3%) and the daily press (54.3%) as the most important sources of information. Medical literature (45.7%) and official institutions (40.4%) were rated less often.
Conclusions: Formulated pointedly, the HCW turned to popular science to get the information they need to feel safe. Further in house training regarding practical skills and reference to scientific literature would be a better solution to ensure workplace safety.
Siglec-1 (sialoadhesin, CD169) is a surface receptor on human cells that mediates trans-enhancement of HIV-1 infection through recognition of sialic acid moieties in virus membrane gangliosides. Here, we demonstrate that mouse Siglec-1, expressed on the surface of primary macrophages in an interferon-α-responsive manner, captures murine leukemia virus (MLV) particles and mediates their transfer to proliferating lymphocytes. The MLV infection of primary B-cells was markedly more efficient than that of primary T-cells. The major structural protein of MLV particles, Gag, frequently co-localized with Siglec-1, and trans-infection, primarily of surface-bound MLV particles, efficiently occurred. To explore the role of sialic acid for MLV trans-infection at a submolecular level, we analyzed the potential of six sialic acid precursor analogs to modulate the sialylated ganglioside-dependent interaction of MLV particles with Siglec-1. Biosynthetically engineered sialic acids were detected in both the glycolipid and glycoprotein fractions of MLV producer cells. MLV released from cells carrying N-acyl-modified sialic acids displayed strikingly different capacities for Siglec-1-mediated capture and trans-infection; N-butanoyl, N-isobutanoyl, N-glycolyl, or N-pentanoyl side chain modifications resulted in up to 92 and 80% reduction of virus particle capture and trans-infection, respectively, whereas N-propanoyl or N-cyclopropylcarbamyl side chains had no effect. In agreement with these functional analyses, molecular modeling indicated reduced binding affinities for non-functional N-acyl modifications. Thus, Siglec-1 is a key receptor for macrophage/lymphocyte trans-infection of surface-bound virions, and the N-acyl side chain of sialic acid is a critical determinant for the Siglec-1/MLV interaction.
Low interest rates are becoming a threat to the stability of the life insurance industry, especially in countries such as Germany, where products with relatively high guaranteed returns sold in the past still represent a prominent share of the total portfolio. This contribution aims to assess and quantify the effects of the current low interest rate phase on the balance sheet of a representative German life insurer, given the current asset allocation and the outstanding liabilities. To do so, we generate a stochastic term structure of interest rates as well as stock market returns to simulate investment returns of a stylized life insurance business portfolio in a multi-period setting. Based on empirically calibrated parameters, we can observe the evolution of the life insurers’ balance sheet over time with a special focus on their solvency situation. To account for different scenarios and in order to check the robustness of our findings, we calibrate different capital market settings and different initial situations of capital endowment. Our results suggest that a prolonged period of low interest rates would markedly affect the solvency situation of life insurers, leading to a relatively high cumulative probability of default, especially for less capitalized companies. In addition, the new reform of the German life insurance regulation has a beneficial effect on the cumulative probability of default, as a direct consequence of the reduction of the payouts to policyholders.