cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Schädigung in der Kaltmassivumformung
title: Entwicklung, Auswirkungen und Kontrolle
titleType: AlternativeTitle
Creators: name: Hering, Oliver
Publisher: name: Technische Universität Dortmund
Year: 2020
Subjects: subject: Kaltumformung
subject: Fließpressen
subject: Schädigung
subject: Bauteileigenschaften
subject: 620
subject: 670
subject: Kaltumformen
subject: Fließpressen
subject: Werkstoffschädigung
subject: Bauteil

description: Im Bereich der Umformtechnik wird die Leistungsfähigkeit unter anderem durch die Mikrostruktur, die Kaltverfestigung, die Textur, den Faserverlauf sowie die Eigenspannungen verändert. Schädigung, als Eigenschaft von produzierten Bauteilen, wird bei der Auslegung nicht berücksichtigt, da weder genau bekannt ist, welche Lastpfade zu Schädigung führen, noch wie Schädigung die Leistungsfähigkeit beeinflusst. In dieser Arbeit werden die beim Voll-Vorwärts-Fließpressen auftretenden Lastpfade numerisch ermittelt und mittels Triaxialität und Lode-Winkel-Parameter beschrieben. Das Voll-Vorwärts-Fließpressen wurde als ein ideales Verfahren zur Ermittlung von Wirkzusammenhängen zwischen Lastpfad, Schädigung und Leistungsfähigkeit identifiziert, da entlang der Mittelachse der fließgepressten Bauteile eine starke Abhängigkeit des hydrostatischen Drucks in der Umformzone von den Prozessparametern sowie bekannte homogene Umformgrade und vernachlässigbare Eigenspannungen nach Bauteilauswurf und Probenentnahme vorliegen. Der Einfluss der unterschiedlichen Lastpfade auf die Entwicklung von duktiler Schädigung wird mittels Rasterelektronenmikroskopie und Dichtemessungen untersucht. Letztendlich wird der Einfluss der Schädigung auf die resultierende Leistungsfähigkeit ermittelt. Dazu werden Kerbschlagbiegeversuche, Ermüdungsversuche und Messungen des Elastizitätsmoduls sowie der statischen Festigkeit durchgeführt. Eine positive maximale Triaxialität führt während der plastischen Formänderung zu einer Neubildung von Poren, wodurch die Porenfläche ansteigt. Mit Ausnahme der statischen Festigkeit führt eine erhöhte Schädigung zu einer Verringerung der Leistungsfähigkeit.
description: Dortmunder Umformtechnik;109
Classifying real-world data with the $DDα$-procedure
Creators: name: Mozharovskyi, Pavlo
name: Mosler, Karl
name: Lange, Tatjana
Publisher: name: arXiv
Year: 2014
Subjects: subject: Applications (stat.AP)
subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: The $DDα$-classifier, a nonparametric fast and very robust procedure, is described and applied to fifty classification problems regarding a broad spectrum of real-world data. The procedure first transforms the data from their original property space into a depth space, which is a low-dimensional unit cube, and then separates them by a projective invariant procedure, called $α$-procedure. To each data point the transformation assigns its depth values with respect to the given classes. Several alternative depth notions (spatial depth, Mahalanobis depth, projection depth, and Tukey depth, the latter two being approximated by univariate projections) are used in the procedure, and compared regarding their average error rates. With the Tukey depth, which fits the distributions' shape best and is most robust, `outsiders', that is data points having zero depth in all classes, need an additional treatment for classification. Evidence is also given about the dimension of the extended feature space needed for linear separation. The $DDα$-procedure is available as an R-package.
Учёный, опередивший своё время: к 125-летию со дня рождения Н. А. Невского (1892-1937)
Creators: name: Бакшеев Евгений Сергеевич
Publisher: name: Японские исследования
Year: 2017
Subjects: НИКОЛАЙ АЛЕКСАНДРОВИЧ НЕВСКИЙ
НАУЧНОЕ НАСЛЕДИЕ
ЯПОНОВЕДЕНИЕ
РЮКЮ/ОКИНАВА
АРХИВ Н.А. НЕВСКОГО В БИБЛИОТЕКЕ УНИВЕРСИТЕТА ТЭНРИ
ВОЗОБНОВЛЕНИЕ ЧЕЛОВЕЧЕСКОГО РЕСУРСА
NIKOLAI A. NEVSKY
RESEARCH HERITAGE/ACADEMIC LEGACY
JAPANESE STUDIES
RYUKYU/OKINAWA
NEVSKY’S ARCHIVE IN TENRI UNIVERSITY LIBRARY
RENEWAL OF THE HUMAN RESOURCE

description: Статья публикуется в связи со 125-летием со дня рождения великого российского востоковеда Н.А. Невского (1892-1937). Рассказывается о новых находках, публикациях, исследованиях жизни и научного наследия Н.А. Невского, которые увидели свет в последние годы. Впервые подробно описывается архив Н.А. Невского в библиотеке Университета Тэнри. Цель публикации возвращение в отечественный научный оборот наследия Н.А. Невского из зарубежных архивов для задач государственной национальной политики по возобновлению человеческого ресурса.The article has been prepared on the occasion of the 125th anniversary of the birth of Nikolai A. Nevsky (1892-1937), a Russian linguist, folklorist and ethnographer of genius who spent 14 years (1915-29) in Japan. It illustrates new findings, publications, and research on his life and legacy carried out in the last decade. For the first time Nevsky’s archive in Tenri University Library, Japan is being considered in detail.
Bio-SimVerb and Bio-SimLex: wide-coverage evaluation sets of word similarity in biomedicine.
Creators: name: Chiu, Billy
name: Pyysalo, Sampo
name: Vulić, Ivan
name: Korhonen, Anna-Leena
Publisher: name: Apollo - University of Cambridge Repository
Year: 2018
Subjects: Humans
Language
Biomedical Technology
Semantics
Natural Language Processing
Software
Databases as Topic

description: Background: Word representations support a variety of Natural Language Processing (NLP) tasks. The quality of these representations is typically assessed by comparing the distances in the induced vector spaces against human similarity judgements. Whereas comprehensive evaluation resources have recently been developed for the general domain, similar resources for biomedicine currently suﬀer from the lack of coverage, both in terms of word types included and with respect to the semantic distinctions. Notably, verbs have been excluded, although they are essential for the interpretation of biomedical language. Further, current resources do not discern between semantic similarity and semantic relatedness, although this has been proven as an important predictor of the usefulness of word representations and their performance in downstream applications. Results: We present two novel comprehensive resources targeting the evaluation of word representations in biomedicine. These resources, Bio-SimVerb and Bio-SimLex, address the previously mentioned problems, and can be used for evaluations of verb and noun representations respectively. In our experiments, we have computed the Pearson’s correlation between performances on intrinsic and extrinsic tasks using twelve popular state-of-the-art representation models (e.g. word2vec models). The intrinsic–extrinsic correlations using our datasets are notably higher than with previous intrinsic evaluation benchmarks such as UMNSRS and MayoSRS. In addition, when evaluating representation models for their abilities to capture verb and noun semantics individually, we show a considerable variation between performances across all models. Conclusion: Bio-SimVerb and Bio-SimLex enable intrinsic evaluation of word representations. This evaluation can serve as a predictor of performance on various downstream tasks in the biomedical domain. The results on Bio-SimVerb and Bio-SimLex using standard word representation models highlight the importance of developing dedicated evaluation resources for NLP in biomedicine for particular word classes (e.g. verbs). These are needed to identify the most accurate methods for learning class-speciﬁc representations. Bio-SimVerb and Bio-SimLex are publicly available.
Native point defects in CuIn$_{1-x}$Ga$_x$Se$_{2}$: hybrid density functional calculations predict origin of p- and n-type conductivity
Creators: name: Bekaert, Jonas
name: Saniz, Rolando
name: Partoens, Bart
name: Lamoen, Dirk
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have performed a first-principles study of the p- and n-type conductivity in CuIn$_{1-x}$Ga$_x$Se$_{2}$ due to native point defects, based on the HSE06 hybrid functional. Band alignment shows that the band gap becomes larger with $x$ due to the increasing conduction band minimum, rendering it hard to establish n-type conductivity in CuGaSe$_{2}$. From the defect formation energies, we find that In/Ga$_{\mathrm{Cu}}$ is a shallow donor, while V$_{\mathrm{Cu}}$, V$_{\mathrm{In}/\mathrm{Ga}}$ and Cu$_{\mathrm{In}/\mathrm{Ga}}$ act as shallow acceptors. Using total charge neutrality of ionized defects and intrinsic charge carriers to determine the Fermi level, we show that under In-rich growth conditions In$_{\mathrm{Cu}}$ causes strongly n-type conductivity in CuInSe$_{2}$. Under In-poor growth conditions the conductivity type in CuInSe$_{2}$ alters to p-type and compensation of the acceptors by In$_{\mathrm{Cu}}$ reduces, as observed in photoluminescence experiments. In CuGaSe$_{2}$, the native acceptors pin the Fermi level far away from the conduction band minimum, thus inhibiting n-type conductivity. On the other hand, CuGaSe$_{2}$ shows strong p-type conductivity under a wide range of Ga-poor growth conditions. Maximal p-type conductivity in CuIn$_{1-x}$Ga$_x$Se$_{2}$ is reached under In/Ga-poor growth conditions, in agreement with charge concentration measurements on samples with In/Ga-poor stoichiometry, and is primarily due to the dominant acceptor Cu$_{\mathrm{In}/\mathrm{Ga}}$.
Variance component score test for time-course gene set analysis of longitudinal RNA-seq data
Creators: name: Agniel, Denis
name: Hejblum, Boris P
Publisher: name: arXiv
Year: 2016
Subjects: subject: Applications (stat.AP)
subject: Genomics (q-bio.GN)
subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences
subject: 62P10

description: As gene expression measurement technology is shifting from microarrays to sequencing, the statistical tools available for their analysis must be adapted since RNA-seq data are measured as counts. Recently, it has been proposed to tackle the count nature of these data by modeling log-count reads per million as continuous variables, using nonparametric regression to account for their inherent heteroscedasticity. Adopting such a framework, we propose tcgsaseq, a principled, model-free and efficient top-down method for detecting longitudinal changes in RNA-seq gene sets. Considering gene sets defined a priori, tcgsaseq identifies those whose expression vary over time, based on an original variance component score test accounting for both covariates and heteroscedasticity without assuming any specific parametric distribution for the transformed counts. We demonstrate that despite the presence of a nonparametric component, our test statistic has a simple form and limiting distribution, and both may be computed quickly. A permutation version of the test is additionally proposed for very small sample sizes. Applied to both simulated data and two real datasets, the proposed method is shown to exhibit very good statistical properties, with an increase in stability and power when compared to state of the art methods ROAST, edgeR and DESeq2, which can fail to control the type I error under certain realistic settings. We have made the method available for the community in the R package tcgsaseq.
description: 23 pages, 6 figures, typo corrections & acceptance acknowledgement
Fine-Grained Socioeconomic Prediction from Satellite Images with Distributional Adjustment
Creators: name: Ahn, Donghyun
name: Song, Minhyuk
name: Lee, Seungeon
name: Choi, Yubin
name: Kim, Jihee
name: Park, Sangyoon
name: Yang, Hyunjoo
name: Cha, Meeyoung
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences
subject: J.4

description: While measuring socioeconomic indicators is critical for local governments to make informed policy decisions, such measurements are often unavailable at fine-grained levels like municipality. This study employs deep learning-based predictions from satellite images to close the gap. We propose a method that assigns a socioeconomic score to each satellite image by capturing the distributional behavior observed in larger areas based on the ground truth. We train an ordinal regression scoring model and adjust the scores to follow the common power law within and across regions. Evaluation based on official statistics in South Korea shows that our method outperforms previous models in predicting population and employment size at both the municipality and grid levels. Our method also demonstrates robust performance in districts with uneven development, suggesting its potential use in developing countries where reliable, fine-grained data is scarce.
Orbifold Stability and Miyaoka-Yau Inequality for minimal pairs
Creators: name: Guenancia, Henri
name: Taji, Behrouz
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Geometry (math.AG)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: After establishing suitable notions of stability and Chern classes for singular pairs, we use Kähler-Einstein metrics with conical and cuspidal singularities to prove the slope semistability of orbifold tangent sheaves of minimal log-canonical pairs of log general type. We then proceed to prove the Miyaoka-Yau inequality for all minimal pairs with standard coefficients. Our result in particular provides an alternative proof of the Abundance theorem for threefolds that is independent of positivity results for tangent sheaves.
description: v2: 40 pages, final version. Significant changes in the exposition following the referees' suggestions; main results unchanged
Trapped Modes and Steered Dirac Cones in Platonic Crystals
Creators: name: McPhedran, R. C.
name: Movchan, A. B.
name: Movchan, N. V.
name: Brun, M.
name: Smith, M. J. A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: This paper discusses the properties of flexural waves obeying the biharmonic equation, propagating in a thin plate pinned at doubly-periodic sets of points. The emphases are on the properties of dispersion surfaces having the Dirac cone topology, and on the related topic of trapped modes in plates with a finite set (cluster) of pinned points. The Dirac cone topologies we exhibit have at least two cones touching at a point in the reciprocal lattice, augmented by another band passing through the point. We show that the Dirac cones can be steered along symmetry lines in the Brillouin zone by varying the aspect ratio of rectangular lattices of pins, and that, as the cones are moved, the involved band surfaces tilt. We link Dirac points with a parabolic profile in their neighbourhood, and the characteristic of this parabolic profile decides the direction of propagation of the trapped mode in finite clusters.
description: 21 pages, 12 figures
An Astrometric Approach to Measuring the Color of an Object
Creators: name: Guo, B. F.
name: Peng, Q. Y.
name: Fang, X. Q.
name: Lin, F. R.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The color of a star is a critical feature to reflect its physical property such as the temperature. The color index is usually obtained via absolute photometry, which is demanding for weather conditions and instruments. In this work, we present an astrometric method to measure the catalog-matched color index of an object based on the effect of differential color refraction (DCR). Specifically, we can observe an object using only one filter or alternately using two different filters. Through the difference of the DCR effect compared with reference stars, the catalog-matched color index of an object can be conveniently derived. Hence, we can perform DCR calibration and obtain its accurate and precise positions even if observed with Null filter during a large range of zenith distances, by which the limiting magnitude and observational efficiency of the telescope can be significantly improved. This method takes advantage of the DCR effect and builds a link between astrometry and photometry. In practice, we measure the color indices and positions of Himalia (the sixth satellite of Jupiter) using 857 CCD frames over 8 nights by two telescopes. Totally, the mean color index BP-RP (Gaia photometric system) of Himalia is 0.750 \pm 0.004 magnitude. Through the rotational phased color index analysis, we find two places with their color indices exceeding the mean \pm 3 σ.
description: 10 pages, 5 figures, 4 tables
STRENGTHENING HUMAN RESOURCE CAPACITY TO SUPPORT BUSINESS SUSTAINABILITY MEDIATED BY ENTREPRENEURIAL BEHAVIOR OF F&B SERVICE MSMES IN MAKASSAR CITY
Creators: name: ADINDA FITRIANTI
name: CHAHYONO
name: ABDUL KARIM
Publisher: name: Zenodo
Year: 2024
Subjects: Human resource capacity, Creativity, Innovation, Entrepreneurial behavior, Business sustainability, MSMEs, F&B service, Makassar City.

description: Abstract

This study aims to analyze the strengthening of human resource capacity, particularly in terms of creativity and innovation, in supporting the business sustainability of MSMEs in the Food and Beverage (F&B) service sector in Makassar City. The study also focuses on the role of entrepreneurial behavior as a mediating variable that can enhance the relationship between human resource capacity and business sustainability. The research method used is quantitative with a survey approach, where data was collected through questionnaires distributed to 359 randomly selected respondents from a population of 3,443 F&B service MSMEs in Makassar City. Data analysis was performed using the Partial Least Squares Structural Equation Modeling (PLS-SEM) method to test the causal relationships between research variables. The results of the analysis show that increasing human resource capacity in aspects of creativity and innovation has a significant impact on business sustainability. Moreover, entrepreneurial behavior positively and significantly mediates the relationship between creativity, innovation, and business sustainability. This indicates that strengthening entrepreneurial behavior is a key factor in enhancing the impact of human resource capacity on the sustainability of MSMEs. The findings of this study provide practical implications for stakeholders in developing training programs and policies that encourage increased creativity and innovation as well as proactive entrepreneurial behavior for the sustainability of F&B service MSMEs in Makassar City. The study also highlights the importance of integrating HR development strategies with strengthening entrepreneurial behavior to achieve sustainability goals.
Sequential Dirichlet Process Mixtures of Multivariate Skew t-distributions for Model-based Clustering of Flow Cytometry Data
Creators: name: Hejblum, Boris P.
name: Alkhassim, Chariff
name: Gottardo, Raphael
name: Caron, François
name: Thiébaut, Rodolphe
Publisher: name: arXiv
Year: 2017
Subjects: subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: 62H30, 62P10, 62L12

description: Flow cytometry is a high-throughput technology used to quantify multiple surface and intracellular markers at the level of a single cell. This enables to identify cell sub-types, and to determine their relative proportions. Improvements of this technology allow to describe millions of individual cells from a blood sample using multiple markers. This results in high-dimensional datasets, whose manual analysis is highly time-consuming and poorly reproducible. While several methods have been developed to perform automatic recognition of cell populations, most of them treat and analyze each sample independently. However, in practice, individual samples are rarely independent (e.g. longitudinal studies). Here, we propose to use a Bayesian nonparametric approach with Dirichlet process mixture (DPM) of multivariate skew $t$-distributions to perform model based clustering of flow-cytometry data. DPM models directly estimate the number of cell populations from the data, avoiding model selection issues, and skew $t$-distributions provides robustness to outliers and non-elliptical shape of cell populations. To accommodate repeated measurements, we propose a sequential strategy relying on a parametric approximation of the posterior. We illustrate the good performance of our method on simulated data, on an experimental benchmark dataset, and on new longitudinal data from the DALIA-1 trial which evaluates a therapeutic vaccine against HIV. On the benchmark dataset, the sequential strategy outperforms all other methods evaluated, and similarly, leads to improved performance on the DALIA-1 data. We have made the method available for the community in the R package NPflow.
description: 39 pages, 11 figures
Tuning the Structural, Electronic, and Magnetic Properties of Germanene by the Adsorption of 3$d$ Transition Metal Atoms
Creators: name: Kaloni, T. P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The structural, electronic, and magnetic properties of 3$d$ transition metal (TM) atoms (Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, and Zn) adsorbed germanene are addressed using density functional theory. Based on the adsorption energy, TM atoms prefer to occupy at the hollow site for all the cases. The obtained values of the total magnetic moment vary from 0.97 $μ_B$ to 4.95 $μ_B$ in case of Sc to Mn-adsorption, respectively. A gap of 74 meV with a strongly enhanced splitting of 67 meV is obtained in case of Sc-adsorption, whereas metallic states are obtained in case of Ti, Cr, Mn, Fe, and Co. Non-magnetic states are realized for Ni, Cu, and Zn-adsorption. Moreover, semiconducting nature is obtained for non-magnetic cases with a gap of 26 to 28 meV. Importantly, it is found that V-adsorbed germanene can host the quantum anomalous Hall effect. The obtained results demonstrate that TM atoms and nearest neighbour Ge atoms are ferro-magnetically ordered in the cases of V, Mn, Fe, Co, Ni, Cu, and Zn, while anti-ferromagnetic ordering is obtained for Sc, Ti, and Cr. In addition, the effects of the coverage of all TM atoms on the electronic structure and the ferro-magnetic and anti-ferro-magnetic coupling in case of Mn are examined. The results could help to understand the effect of TM atoms in a new class of two-dimensional materials beyond graphene and silicene.
description: 22 pages, 11 figures, and 3 tables; J. Phys. Chem. C 2014
Laparoscopic trashiatal esophagectomy with gastric lift for complex esophageal stricture. A case report
Creators: name: Luis Añorve Castro M.D.
name: Gerardo Sanchez Miranda M.D.
name: Leonardo Barba Valadez M.D.
name: Marcela Rojas Hurtado M.D.
Publisher: name: Zenodo
Year: 2023

description: Background
Esophageal stricture is the abnormal narrowing of the esophageal lumen, of variable etiology, clinical manifestations with timely identification is important to initiate the diagnostic/therapeutic approach that requires endoscopy, biopsies, progressive esophageal dilations. Complex strictures are asymmetric, with diameter ≤ 12 mm, do not allow the pass of an endoscope, and are usually candidates for surgical management by laparoscopic transhiatal esophagectomy, which has good results with lower rate of complications and early incorporation of daily activities.
 
Keywords: Esophageal stricture, esophagectomy.
Discrete Newtonian Cosmology: Perturbations
Creators: name: Ellis, George F. R.
name: Gibbons, Gary W.
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In a previous paper [arXiv:1308.1852] we showed how a finite system of discrete particles interacting with each other via Newtonian gravitational attraction would lead to precisely the same dynamical equations for homothetic motion as in the case of the pressure-free Friedmann-Lemaître-Robertson-Walker cosmological models of General Relativity Theory, provided the distribution of particles obeys the central configuration equation. In this paper we show one can obtain perturbed such Newtonian solutions that give the same linearised structure growth equations as in the general relativity case. We also obtain the Dmitriev-Zeldovich equations for subsystems in this discrete gravitational model, and show how it leads to the conclusion that voids have an apparent negative mass.
description: 24 pages
Внешнеэкономическая деятельность провинции Хэйлунцзян в период реформ (1978-2008 гг. )
Creators: name: Александрова Мария Викторовна
Publisher: name: Китай в мировой и региональной политике. История и современность
Year: 2009
Subjects: вступление в ВТО
технико-экономическое сотрудничество
открытость внешнему миру
централизованное плановое управление
реформирование
поощрение экспортеров
либерализация
приграничная торговля
валютный курс
процентная ставка
возвратная пошлина
экспортно-импортные операции
экономико-географическое положение
Госсовет КНР
иностранные инвестиции
география внешней торговли
товарная структура
старая промышленная база Северо-Востока
Дэн Сяопин
азиатский финансовый кризис
трудовые услуги
строительный подряд

description: В период подготовки вступления КНР в ВТО провинция осуществляла перестройку структуры производства в соответствии с требованиями мирового рынка, с этой целью Госсовет КНР утвердил специальные нормативные документы о мерах регулирования приграничной торговли. Успехи провинции в малой, бартерной торговли были связаны с крайне выгодным экономико-географическим положением и наличием 3000-километровой границы с российскими регионами. Всё большую роль стал занимать частный сектор. Произошло изменения структуры экспорта провинции от природных ресурсов и продукция первичной переработки в начале 90-х годов к продукции с высокой степенью промышленной переработки и прежде всего машинотехнической группы. Основным торговым партнёром была и остаётся Россия. Проведение комплекса мероприятий по улучшению рыночной среды, постепенное снижение рисков и осуществление инвестиционной политики, дали толчок для бурного развитие совместных предприятий. Международное технико-экономическое сотрудничество провинции непрерывно совершенствовалось.
Dedekind sigma-complete l-groups and Riesz spaces as varieties
Creators: name: Abbadini, Marco
Publisher: name: arXiv
Year: 2017
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 06D20 (Primary) 03C05, 08A65 (Secondary)

description: We prove that the category of Dedekind $σ$-complete Riesz spaces is an infinitary variety, and we provide an explicit equational axiomatization. In fact, we show that finitely many axioms suffice over the usual equational axiomatization of Riesz spaces. Our main result is that $\mathbb{R}$, regarded as a Dedekind $σ$-complete Riesz space, generates this category as a quasi-variety, and therefore as a variety. Analogous results are established for the categories of (i) Dedekind $σ$-complete Riesz spaces with a weak order unit, (ii) Dedekind $σ$-complete lattice-ordered groups, and (iii) Dedekind $σ$-complete lattice-ordered groups with a weak order unit.
description: 15 pages
Fast neutron star cooling in light of the PREX-2 experiment
Creators: name: Sarkar, Trisha
name: Thapa, Vivek Baruah
name: Sinha, Monika
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The nuclear symmetry energy and its behaviour with density has been recently evaluated with enhanced value by PREX-2 experiment. This new values enables direct Urca neutrino emission process to be functioning in the dense matter inside neutron stars. With this new outlook we study the cooling rate of canonical mass neutron stars and compare with available observational cooling data. We find most of the isolated neutron star thermal profile is compatible with the cooling of canonical mass star including superfluidity suppression.
description: 8 pages, 5 figures. Accepted for publication in Phys. Rev. C
Nonlinear Mixed Effects Models for Time Series Forecasting of Smart Meter Demand
Creators: name: Roach, Cameron
name: Hyndman, Rob J
name: Taieb, Souhaib Ben
Publisher: name: Monash University
Year: 2022
Subjects: Econometric and statistical methods
Econometrics not elsewhere classified

description: Buildings are typically equipped with smart meters to measure electricity demand at regular intervals. Smart meter data for a single building have many uses, such as forecasting and assessing overall building performance. However, when data are available from multiple buildings, there are additional applications that are rarely explored. For instance, we can explore how different building characteristics influence energy demand. If each building is treated as a random effect and building characteristics are handled as fixed effects, a mixed effects model can be used to estimate how characteristics affect energy usage. In this paper we demonstrate that producing one day ahead demand predictions for 123 commercial office buildings using mixed models can improve forecasting accuracy. We experiment with random intercept, random intercept and slope, and nonlinear mixed models. The predictive performance of the mixed effects models are tested against naive, linear and nonlinear benchmark models fitted to each building separately. This research justifies using mixed models to improve forecasting accuracy and to quantify changes in energy consumption under different building configuration scenarios.
Conditions for the Thermal Instability in the Galactic Centre Mini-spiral region
Creators: name: Różańska, A.
name: Czerny, B.
name: Kunneriath, D.
name: Adhikari, T. P.
name: Karas, V.
name: Mościbrodzka, M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We explore the conditions for the thermal instability to operate in the mini-spiral region of the Galactic centre (Sgr A*), where both the hot and cold media are known to coexist. The photoionisation Cloudy calculations are performed for different physical states of plasma. We neglect the dynamics of the material and concentrate on the study of the parameter ranges where the thermal instability may operate, taking into account the past history of Sgr A* bolometric luminosity. We show that the thermal instability does not operate at the present very low level of the Sgr A* activity. However, Sgr A* was much more luminous in the past. For the highest luminosity states the two-phase medium can be created up to 1.4 pc from the centre. The presence of dust grains tends to suppress the instability, but the dust is destroyed in the presence of strong radiation field and hot plasma. The clumpiness is thus induced in the high activity period, and the cooling/heating timescales are long enough to preserve later the past multi-phase structure. The instability enhances the clumpiness of the mini-spiral medium and creates a possibility of episodes of enhanced accretion of cold clumps towards Sgr A*. The mechanism determines the range of masses and sizes of clouds; under the conditions of Sgr A*, the likely values come out $1$ - $10^2M_{\oplus}$ for the cloud typical mass.
description: Accepted for publication in MNRAS, 10 pages, 7 figures
Alexandrov Spaces with Maximal Radius
Creators: name: Grove, Karsten
name: Petersen, Peter
Publisher: name: arXiv
Year: 2018
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: Abstract. In this paper we prove several rigidity theorems related to and including Lytchak's problem. The focus is on Alexandrov spaces with \curv\geq1, nonempty boundary, and maximal radius \fracπ{2}. We exhibit many such spaces that indicate that this class is remarkably flexible. Nevertheless, we also show that when the boundary is either geometrically or topologically spherical, then it is possible to obtain strong rigidity results. In contrast to this one can show that with general lower curvature bounds and strictly convex boundary only cones can have maximal radius. We also mention some connections between our problems and the positive mass conjectures. This paper is an expanded version and replacement of the two previous versions
description: version 3 significantly expands previous versions and has a new title
The wind of W Hya as seen by Herschel. II. The molecular envelope of W Hya
Creators: name: Khouri, T.
name: de Koter, A.
name: Decin, L.
name: Waters, L. B. F. M.
name: Maercker, M.
name: Lombaert, R.
name: Alcolea, J.
name: Blommaert, J. A. D. L.
name: Bujarrabal, V.
name: Groenewegen, M. A. T.
name: Justtanont, K.
name: Kerschbaum, F.
name: Matsuura, M.
name: Menten, K. M.
name: Olofsson, H.
name: Planesas, P.
name: Royer, P.
name: Schmidt, M. R.
name: Szczerba, R.
name: Teyssier, D.
name: Yates, J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The evolution of low- and intermediate-mass stars on the asymptotic giant branch (AGB) is mainly controlled by the rate at which these stars lose mass in a stellar wind. Understanding the driving mechanism and strength of the stellar winds of AGB stars and the processes enriching their surfaces with products of nucleosynthesis are paramount to constraining AGB evolution and predicting the chemical evolution of galaxies. In a previous paper we have constrained the structure of the outflowing envelope of W Hya using spectral lines of the $^{12}$CO molecule. Here we broaden this study by modelling an extensive set of H$_{2}$O and $^{28}$SiO lines observed by the three instruments on board Herschel using a state-of-the-art molecular excitation and radiative transfer code. The oxygen isotopic ratios and the $^{28}$SiO abundance profile can be connected to the initial stellar mass and to crucial aspects of dust formation at the base of the stellar wind, respectively. The modelling of H$_{2}$O and $^{28}$SiO confirms the properties of the envelope model of W Hya derived from $^{12}$CO lines. We find an H$_2$O ortho-to-para ratio of 2.5\,$^{+2.5}_{-1.0}$, consistent with what is expected for an AGB wind. The O$^{16}$/O$^{17}$ ratio indicates that W Hya has an initial mass of about 1.5 M$_\odot$. Although the ortho- and para-H$_{2}$O lines observed by HIFI appear to trace gas of slightly different physical properties, a turbulence velocity of $0.7\pm0.1$ km s$^{-1}$ fits the HIFI lines of both spin isomers and those of $^{28}$SiO well. The ortho- and para-H$_2^{16}$O and $^{28}$SiO abundances relative to H$_{2}$ are $(6^{+3}_{-2}) \times 10^{-4}$, $(3^{+2}_{-1}) \times 10^{-4}$, and $(3.3\pm 0.8)\times 10^{-5}$, respectively. Assuming a solar silicon-to-carbon ratio, the $^{28}$SiO line emission model is consistent with about one-third of the silicon atoms being locked up in dust particles.
Operations that preserve integrability, and truncated Riesz spaces
Creators: name: Abbadini, Marco
Publisher: name: arXiv
Year: 2018
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics
subject: Primary: 06F20. Secondary: 03C05, 08A65, 08B20, 46E30

description: For any real number $p\in [1,+\infty)$, we characterise the operations $\mathbb{R}^I \to \mathbb{R}$ that preserve $p$-integrability, i.e., the operations under which, for every measure $μ$, the set $\mathcal{L}^p(μ)$ is closed. We investigate the infinitary variety of algebras whose operations are exactly such functions. It turns out that this variety coincides with the category of Dedekind $σ$-complete truncated Riesz spaces, where truncation is meant in the sense of R. N. Ball. We also prove that $\mathbb{R}$ generates this variety. From this, we exhibit a concrete model of the free Dedekind $σ$-complete truncated Riesz spaces. Analogous results are obtained for operations that preserve $p$-integrability over finite measure spaces: the corresponding variety is shown to coincide with the much studied category of Dedekind $σ$-complete Riesz spaces with weak unit, $\mathbb{R}$ is proved to generate this variety, and a concrete model of the free Dedekind $σ$-complete Riesz spaces with weak unit is exhibited.
description: Changed the definition of "conditionally partitionable measure space", results unchanged; minor changes
Imitative learning as a connector of collective brains
Creators: name: Fontanari, José F.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: The notion that cooperation can aid a group of agents to solve problems more efficiently than if those agents worked in isolation is prevalent, despite the little quantitative groundwork to support it. Here we consider a primordial form of cooperation -- imitative learning -- that allows an effective exchange of information between agents, which are viewed as the processing units of a social intelligence system or collective brain. In particular, we use agent-based simulations to study the performance of a group of agents in solving a cryptarithmetic problem. An agent can either perform local random moves to explore the solution space of the problem or imitate a model agent -- the best performing agent in its influence network. There is a complex trade-off between the number of agents N and the imitation probability p, and for the optimal balance between these parameters we observe a thirtyfold diminution in the computational cost to find the solution of the cryptarithmetic problem as compared with the independent search. If those parameters are chosen far from the optimal setting, however, then imitative learning can impair greatly the performance of the group. The observed maladaptation of imitative learning for large N offers an alternative explanation for the group size of social animals.
Comparison of two equivariant $η$-forms
Creators: name: Liu, Bo
name: Ma, Xiaonan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 58J20, 19K56, 58J28, 58J35

description: In this paper, we first define the equivariant infinitesimal $η$-form, then we compare it with the equivariant $η$-form, modulo exact forms, by a locally computable form. As a consequence, we obtain the singular behavior of the equivariant $η$-form, modulo exact forms, as a function on the acting Lie group. This result extends a result of Goette and it plays an important role in our recent work on the localization of $η$-invariants and on the differential $K$-theory.
description: 61 pages
Product Vacua and Boundary State Models in d Dimensions
Creators: name: Bachmann, Sven
name: Hamza, Eman
name: Nachtergaele, Bruno
name: Young, Amanda
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We introduce and analyze a class of quantum spin models defined on d-dimensional lattices Lambda subset of Z^d, which we call `Product Vacua with Boundary States' (PVBS). We characterize their ground state spaces on arbitrary finite volumes and study the thermodynamic limit. Using the martingale method, we prove that the models have a gapped excitation spectrum on Z^d except for critical values of the parameters. For special values of the parameters we show that the excitation spectrum is gapless. We demonstrate the sensitivity of the spectrum to the existence and orientation of boundaries. This sensitivity can be explained by the presence or absence of edge excitations. In particular, we study a PVBS models on a slanted half-plane and show that it has gapless edge states but a gapped excitation spectrum in the bulk.
Planar Brownian motion and Gaussian multiplicative chaos
Creators: name: Jego, Antoine
Publisher: name: arXiv
Year: 2018
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We construct the analogue of Gaussian multiplicative chaos measures for the local times of planar Brownian motion by exponentiating the square root of the local times of small circles. We also consider a flat measure supported on points whose local time is within a constant of the desired thickness level and show a simple relation between the two objects. Our results extend those of Bass, Burdzy and Khoshnevisan and in particular cover the entire $L^1$-phase or subcritical regime. These results allow us to obtain a nondegenerate limit for the appropriately rescaled size of thick points, thereby considerably refining estimates of Dembo, Peres, Rosen and Zeitouni.
description: Final version. To appear in the Annals of Probability. 47 pages, 1 figure
Text: Long-read sequencing infers a mechanism for copy number variation of template for alternative lengthening of telomeres in a wild C. elegans strain
Creators: name: Kim, Jun
Publisher: name: Unknown
Year: 2022
Subjects: c. elegans

description: Extended data 1: Tables 1 and 2
description:
Cite this record as:
Kim, J. (2022). Text: Long-read sequencing infers a mechanism for copy number variation of template for alternative lengthening of telomeres in a wild C. elegans strain. https://doi.org/10.22002/D1.20155
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Tunable, Stable Source of Femtosecond Pulses Near 2 μm via Supercontinuum of an Erbium Mode-Locked Laser
Creators: name: Klose, Andrew
name: Ycas, Gabriel
name: Maser, Daniel L.
name: Diddams, Scott A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: A source of ultrashort pulses of light in the 2 μm region was constructed using supercontinuum broadening from an erbium mode-locked laser. The output spectrum spanned 1000 nm to 2200 nm with an average power of 250 mW. A pulse width of 39 fs for part of the spectrum in the 2000 nm region, corresponding to less than six optical cycles, was achieved. A heterodyne measurement of the free-running mode-locked laser with a narrow-linewidth continuous wave laser resulted in a near shot noise-limited beat note with a signal-to-noise ratio of 45 dB in a 10 kHz resolution bandwidth. The relative intensity noise of the broadband system was investigated over the entire supercontinuum, and the integrated relative intensity noise of the 2000 nm portion of the spectrum was 0.0017. The long-term stability of the system was characterized, and intensity fluctuations in the spectrum were found to be highly correlated throughout the supercontinuum. Spectroscopic limitations due to the laser noise characteristics are discussed.
Imaging with Kantorovich-Rubinstein discrepancy
Creators: name: Lellmann, Jan
name: Lorenz, Dirk A.
name: Schönlieb, Carola
name: Valkonen, Tuomo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Numerical Analysis (math.NA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We propose the use of the Kantorovich-Rubinstein norm from optimal transport in imaging problems. In particular, we discuss a variational regularisation model endowed with a Kantorovich-Rubinstein discrepancy term and total variation regularization in the context of image denoising and cartoon-texture decomposition. We point out connections of this approach to several other recently proposed methods such as total generalized variation and norms capturing oscillating patterns. We also show that the respective optimization problem can be turned into a convex-concave saddle point problem with simple constraints and hence, can be solved by standard tools. Numerical examples exhibit interesting features and favourable performance for denoising and cartoon-texture decomposition.
Parametric Representation of Rank d Tensorial Group Field Theory: Abelian Models with Kinetic Term $\sum_{s}|p_s| + μ$
Creators: name: Geloun, Joseph Ben
name: Toriumi, Reiko
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider the parametric representation of the amplitudes of Abelian models in the so-called framework of rank $d$ Tensorial Group Field Theory. These models are called Abelian because their fields live on $U(1)^D$. We concentrate on the case when these models are endowed with particular kinetic terms involving a linear power in momenta. New dimensional regularization and renormalization schemes are introduced for particular models in this class: a rank 3 tensor model, an infinite tower of matrix models $ϕ^{2n}$ over $U(1)$, and a matrix model over $U(1)^2$. For all divergent amplitudes, we identify a domain of meromorphicity in a strip determined by the real part of the group dimension $D$. From this point, the ordinary subtraction program is applied and leads to convergent and analytic renormalized integrals. Furthermore, we identify and study in depth the Symanzik polynomials provided by the parametric amplitudes of generic rank $d$ Abelian models. We find that these polynomials do not satisfy the ordinary Tutte's rules (contraction/deletion). By scrutinizing the "face"-structure of these polynomials, we find a generalized polynomial which turns out to be stable only under contraction.
description: 69 pages, 35 figures
Localization of five-dimensional Elko Spinors on dS/AdS Thick Branes
Creators: name: Zhou, Xiang-Nan
name: Ma, Xin-Yuan
name: Zhao, Zhen-Hua
name: Du, Yun-Zhi
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Different from the Dirac spinor, the localization of a five-dimensional Elko spinor on a brane with codimension one is very difficult because of the special structure of the Elko spinor. By introducing the coupling between the Elko spinor and the scalar field generating the brane, we have two mechanisms for localization of the zero mode of a five-dimensional Elko spinor on a brane. One is the Yukawa-type coupling and the other is the non-minimal coupling. In this paper, we investigate the localization of the Elko zero mode on de Sitter and Anti-de Sitter thick branes with the two localization mechanisms, respectively. It shows that both the mechanisms can realize the localization. The forms of the coupling functions of the scalar field in the two mechanisms have similar properties respectively and they play similar role for the localization.
description: 15 pages, 5 figures
Text: Biochemical and structural characterization of the flavodoxin-like domain of the Schizosaccharomyces japonicus putative tRNAPhe 4-demethylwyosine synthase Tyw1 in complex with FMN
Creators: name: Sjekloća, Ljiljana
Publisher: name: Unknown
Year: 2022
Subjects: other

description: Sequence alignment of TYW1 proteins; DALI comparison of Tyw1 flavodoxin-like domain structure to other flavodoxin-like domains; FMN binding site in Tyw1 30-251 structure; additional material and methods details.
description:
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Sjekloća Ljiljana. (2022). Text: Biochemical and structural characterization of the flavodoxin-like domain of the Schizosaccharomyces japonicus putative tRNAPhe 4-demethylwyosine synthase Tyw1 in complex with FMN. https://doi.org/10.22002/D1.20182
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