5,948 research outputs found
Development in Lexicography: From Polyfunctional to Monofunctional Accounting Dictionaries
This article describes the theoretical foundation of the accounting dictionaries as well as its practical results. Furthermore, the implementation of the project shows how the constant interaction of lexicographical theory with practical dictionary work over a period of 10 years has led to lexicographical development and adaptation resulting in ongoing adjustments to the dictionaries and their theoretical foundation. This is exemplified by studying the transition from polyfunctional to monofunctional dictionaries in an attempt to provide help in several types of usage situations, typically in communicative situations, e.g. when reading, writing or translating English, Danish or Spanish accounting texts, or cognitive situations, i.e. when users want to know more about accounting matters or accounting language. The article also indicates that the creation of this project connects e-lexicography with the knowledge-based economy. Lexicographers work in the cloud being physically thousands of kilometres away; they work with experts in accounting, databases and the Internet with the aim of constructing and updating a high-quality tool with relatively low information costs for users. Finally, this article shows that the future of lexicography rests on designing, constructing, and updating information tools that take into consideration not only the true nature of lexicography but also the possibilities of the Internet and its technologies, as advocates of the Function Theory of Lexicography do on a regular basis.Keywords: specialized lexicography, function theory, polyfunctional dictionary, monofunctional dictionary, accounting dictionaries, information tools, lexicographical information costs, online dictionary, electronic lexicography, internet, meaning, writing, translation, knowledge, danish, english, spanis
Likelihood inference for exponential-trawl processes
Integer-valued trawl processes are a class of serially correlated, stationary
and infinitely divisible processes that Ole E. Barndorff-Nielsen has been
working on in recent years. In this Chapter, we provide the first analysis of
likelihood inference for trawl processes by focusing on the so-called
exponential-trawl process, which is also a continuous time hidden Markov
process with countable state space. The core ideas include prediction
decomposition, filtering and smoothing, complete-data analysis and EM
algorithm. These can be easily scaled up to adapt to more general trawl
processes but with increasing computation efforts.Comment: 29 pages, 6 figures, forthcoming in: "A Fascinating Journey through
Probability, Statistics and Applications: In Honour of Ole E.
Barndorff-Nielsen's 80th Birthday", Springer, New Yor
Mapping Microstructural Dynamics up to the Nanosecond of the Conjugated Polymer P3HT in the Solid State
We present a detailed study of the structure-dynamics relationship of
regio-regular and regio-random PEHT using different neutron scattering
techniques. Deuteration is employed to modulate the coherent and incoherent
cross-sections, allowing particularly to access both self-motions and
collective dynamics of the materials. The measurements are underpinned by
extensive quantitative calculations using classical MD, as well as first
principles quantum chemistry. MD reproduced well the main structural features
and slow motions, and shed light on differences in collective dynamics between
Q-values linked with the stacking and the lamellar stacking, with the
crystalline phase being the most impacted. On the other hand MD led to a
limited description of molecular vibrations. In this context, first principles
molecular calculations described well the high-energy vibrational features (
900 cm ), while periodic calculations allowed to better describe the
low- and mid-energy vibrational ranges ( 200-900 cm ). The mid-energy
range is predominantly associated with both intra-molecular and inter-molecular
mode coupling, which encloses information about both the polymer conformation
and the polymer packing at short range. One of the outcomes of this study is
the validation of the common assumption made that RRa-P3HT is a good
approximation for the amorphous phase of RR-P3HT at the macroscopic level. The
present work helps to clarify unambiguously the latter point which has been
largely overlooked in the literature. We highlight the importance to complement
optical spectroscopy techniques with inelastic neutron scattering. The latter
offering the advantage of being insensitive to the delocalized -electron
system, and thus enabling to infer relevant quantities like conjugation
lengths, for instance, impacting properties of conjugated polymer.Comment: Featured as ACS Editors' Choice. Featured on the Cover of the
December 10, 2019 issue of Chemistry of Material
Symbolic Partial-Order Execution for Testing Multi-Threaded Programs
We describe a technique for systematic testing of multi-threaded programs. We
combine Quasi-Optimal Partial-Order Reduction, a state-of-the-art technique
that tackles path explosion due to interleaving non-determinism, with symbolic
execution to handle data non-determinism. Our technique iteratively and
exhaustively finds all executions of the program. It represents program
executions using partial orders and finds the next execution using an
underlying unfolding semantics. We avoid the exploration of redundant program
traces using cutoff events. We implemented our technique as an extension of
KLEE and evaluated it on a set of large multi-threaded C programs. Our
experiments found several previously undiscovered bugs and undefined behaviors
in memcached and GNU sort, showing that the new method is capable of finding
bugs in industrial-size benchmarks.Comment: Extended version of a paper presented at CAV'2
Death, dying and informatics: misrepresenting religion on MedLine
BACKGROUND: The globalization of medical science carries for doctors worldwide a correlative duty to deepen their understanding of patients' cultural contexts and religious backgrounds, in order to satisfy each as a unique individual. To become better informed, practitioners may turn to MedLine, but it is unclear whether the information found there is an accurate representation of culture and religion. To test MedLine's representation of this field, we chose the topic of death and dying in the three major monotheistic religions. METHODS: We searched MedLine using PubMed in order to retrieve and thematically analyze full-length scholarly journal papers or case reports dealing with religious traditions and end-of-life care. Our search consisted of a string of words that included the most common denominations of the three religions, the standard heading terms used by the National Reference Center for Bioethics Literature (NRCBL), and the Medical Subject Headings (MeSH) used by the National Library of Medicine. Eligible articles were limited to English-language papers with an abstract. RESULTS: We found that while a bibliographic search in MedLine on this topic produced instant results and some valuable literature, the aggregate reflected a selection bias. American writers were over-represented given the global prevalence of these religious traditions. Denominationally affiliated authors predominated in representing the Christian traditions. The Islamic tradition was under-represented. CONCLUSION: MedLine's capability to identify the most current, reliable and accurate information about purely scientific topics should not be assumed to be the same case when considering the interface of religion, culture and end-of-life care
Pure spinor computation towards open string three-loop
Using the recent results in the pure spinor formulation, we lay out a
ground-work towards the full momentum space amplitudes of open superstrings at
three-loop. After briefly reviewing the one-loop amplitude, we directly work
out the two-loop and reproduce the result that was obtained by a symmetry
argument. For the three-loop, first we use the two-loop regulator as a warm-up
exercise. The result vanishes. We then employ the regulator that has been
recently proposed by Aisaka and Berkovits (AB). It is noted that the terms in
higher power in that render the two-loop
regulator disqualified for the three-loop do not contribute. This with a few
other indications suggests a possibility that the AB regulator might also lead
to a vanishing result. Nevertheless, we argue that it is possible to acquire
the three-loop amplitude, and present a result that we anticipate to be the
three-loop amplitude.Comment: 41 pages, latex, cosmetic change
PREDIVAC: CD4+T-cell epitope prediction for vaccine design that covers 95% of HLA class II DR protein diversity
Background: CD4+ T-cell epitopes play a crucial role in eliciting vigorous protective immune responses during peptide (epitope)-based vaccination. The prediction of these epitopes focuses on the peptide binding process by MHC class II proteins. The ability to account for MHC class II polymorphism is critical for epitope-based vaccine design tools, as different allelic variants can have different peptide repertoires. In addition, the specificity of CD4+ T-cells is often directed to a very limited set of immunodominant peptides in pathogen proteins. The ability to predict what epitopes are most likely to dominate an immune response remains a challenge
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