cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Renormalization of an SU(2) Tensorial Group Field Theory in Three Dimensions
Creators: name: Carrozza, Sylvain
name: Oriti, Daniele
name: Rivasseau, Vincent
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We address in this paper the issue of renormalizability for SU(2) Tensorial Group Field Theories (TGFT) with geometric Boulatov-type conditions in three dimensions. We prove that tensorial interactions up to degree 6 are just renormalizable without any anomaly. Our new models define the renormalizable TGFT version of the Boulatov model and provide therefore a new approach to quantum gravity in three dimensions. Among the many new technical results established in this paper are a general classification of just renormalizable models with gauge invariance condition, and in particular concerning properties of melonic graphs, the second order expansion of melonic two point subgraphs needed for wave-function renormalization.
description: 51 pages, 15 figures, 2 tables. v2: minor corrections. v3: matches published version
title: Аппаратные средства СнК в задачах цифровой обработки сигналов и управления
Creators: name: ELS IPR BOOKS
Publisher: name: Самарский государственный технический университет, ЭБС АСВ
Year: 2020

description: Рассмотрены основные особенности построения однокристальных микроконтроллеров, цифровых сигнальных процессоров и систем на кристалле на примере разработок компании Microchip Technology Inc. Пособие содержит описание 32-разрядных универсальных СнК семейства PIC32MZ DA, составленное по оригинальным материалам компании Microchip. Предназначено для студентов, изучающих дисциплину «Микроконтроллеры и микропроцессоры в системах управления», а также специальные дисциплины, такие как «Технические средства автоматизации и управления», «Схемотехника цифровых устройств», «Вычислительные машины, системы и сети», входящие в содержание основной образовательной программы студентов высших технических заведений в соответствие с ГОС высшего профессионального образования, обучающихся по направлениям 27.03.03 «Системный анализ и управление» профиль «Системный анализ и управление», 27.03.04 «Управление в технических системах» профиль «Управление и информатика в технических системах», а также родственных специальностей.
eWatercycle: Making it easy to use hydrological models
Creators: name: Kalverla, Peter
Publisher: name: Zenodo
Year: 2022
Subjects: research software
software development
hydrology
hydrological modelling
common model interface
modelling environment

description: Understanding water movement on a global scale is essential for society to predict floods, droughts and the effect of land use on water balance. However, large scale hydrology is difficult because, from a hydrological point of view, every field, every street, and every part of the world is unique. By providing a common model interface, an online modelling environment, and built-in preprocessing pipeline, eWaterCycle removes the barriers in models and datasets and brings back the joy in using hydrological models for the benefit of science and society.
Climate Change and Educational Attainment: The Role of Human Mobility
Creators: name: Deuster, Christoph
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Science Policy

description: This paper investigates the potential links between climate change, human capital formation, and internal migration in Africa. In order to do so, a two-sector, world economy model that endogenises education and mobility decisions is developed. This stylised model predicts that negative climatic conditions increase the proportion of people moving internally from rural to urban areas. This in turn leads to a larger share of individuals investing in tertiary education, because the access and returns to education are higher in urban areas. These theoretical predictions are empirically validated by a panel data analysis at the country level and a cross-sectional data analysis at the province level. The empirical validation reveals indirect causality between climate change and education via the moderating variable of internal migration. The research leads to the conclusion that adverse weather changes may have the unexpected effect of increasing educational attainment in African economies. The findings suggest that greater internal mobility can explain this effect.
Extensions of translation invariant valuations on polytopes
Creators: name: Hinderer, Wolfram
name: Hug, Daniel
name: Weil, Wolfgang
Publisher: name: arXiv
Year: 2013
Subjects: subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: Primary: 52A20, 52A39, Secondary: 52B45, 52B11

description: We study translation invariant, real-valued valuations on the class of convex polytopes in Euclidean space and discuss which continuity properties are sufficient for an extension of such valuations to all convex bodies. For this purpose, we introduce flag support measures of convex bodies via a local Steiner formula and derive some of the properties of these measures.
description: minor changes, square brackets replace angle brackets
Two Women Dancers in Different Clothing Surrounded by Male Dancers in Costume (recto); Five Great Artists: Callot, Van-Dyck, Murillo, Poussin, Rubens (verso)
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2019

description: The dancers in the center of this drawing are women, and the men around them wear yellow bill loon headdresses. They are likely visitors to Kingigan from another village, possibly from the North Slope where this kind of headdress is still worn, who have come to participate in the festival. The dance being shown may be an invitational dance, or the "Challenging Song" dance, as it is not part of the Wolf-Eagle Dance, and it could occur during the course of a Messenger Feast as a warm up.
Government Transfers to Parents and Population Policy in a Global Perspective: An Economic Demographic Perspective
Creators: name: Kolk, Martin
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy

description: The world is rapidly converging towards lower fertility: in 2020, countries with a total fertility rate of less than 2.25 will encompass more than three-quarters of the world population. This implies that the determinants of childbearing will be increasingly similar in high-income and middle-income regions of the world. In this article, I discuss economic demography in relation to levels of childbearing. How do different societies distribute resources across the life course and between generations, and to what extent is this done through governmental transfers? The extent of such transfers varies considerably between low-income, middle-income, and high-income countries, which I explored through data from the National Transfers Account project. I argue that in low-fertility societies, the extent to which the costs of childrearing are socialised is important for fertility. The extent to which childrearing is socialised will be an important determinant of future fertility levels and, if used as a population policy, offers a straightforward pathway to achieve a desirable population size. As the global fertility decline continues, such policies will be relevant to most societies and a tool for governments to affect fertility levels across many contexts.
Rudolf Henneböhl: Ovid - Metamorphosen
Creators: name: Schmitz, Dietmar
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Rudolf Henneböhl: Ovid - Metamorphosen. (Latein Kreativ. Lateinische Lektürebände mit kreativer Ausrichtung, Bd. 1). Bad Driburg: Ovid-Verlag 2006, 172 Seiten, (3-938952-008)
description: Forum Classicum, Nr. 1 (2006): Forum Classicum
Coherent Electron Transfer in Polyacetylene
Creators: name: Psiachos, D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We examine, using mixed classical-quantum electron-ion dynamics, electron transfer in a donor-acceptor-like molecular junction system based on polyacetylene. We identify two qualitatively-different transfer regimes: hopping and tunnelling. We discuss the criteria for achieving each one and for minimizing inelastic scattering and decoherence arising from the coupling to the ions, and we connect our main results to quantities derived from electron dynamics involving simpler, three-state model systems. We identify the requirements to have near-ballistic transfer.
Veni vidi vici. Geflügelte Worte aus dem Griechischen und Lateinischen
Creators: name: Westphalen, Klaus
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Veni vidi vici. Geflügelte Worte aus dem Griechischen und Lateinischen. Zusammengestellt, übersetzt und erläutert von Klaus Bartels. 11., durchgehend erneuerte und erweiterte Auflage. Verlag Philipp von Zabern, Mainz 2006, (ISBN 3-8053-3553-9)
description: Forum Classicum, Nr. 3 (2006): Forum Classicum
Jean-François Cottier: Profession latiniste
Creators: name: Wurm, Christoph
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Jean-François Cottier: Profession latiniste. Les Presses de l‘Universite de Montréal, 2008 (ISBN 978-2-7606-2097-1).
description: Forum Classicum, Nr. 1 (2009): Forum Classicum
Vortex Wall Dynamics and Pinning in Helical Magnets
Creators: name: Roostaei, Bahman
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Domain walls formed by one dimensional array of vortex lines have been recently predicted to exist in disordered helical magnets and multiferroics. These systems are on one hand analogues to the vortex line lattices in type-II superconductors while on the other hand they propagate in the magnetic medium as a domain boundary. Using a long wavelength approach supported by numerical optimization we lay out detailed theory for dynamics and structure of such topological fluctuations at zero temperature in presence of weak disorder. We show the interaction between vortex lines is weak. This is the direct consequence of the screening of the vorticity by helical background in the system. We explain how one can use this result to understand the elasticity of the wall with a vicinal surface approach. Also we show the internal degree of freedom of this array leads to the enhancement of its mobility. We present estimates for the interaction and mobility enhancements using the microscopic parameters of the system. Finally we determine the range of velocities/force densities in which the internal movement of the vortex wall can be effective in its dynamics.
Production of French vowels by American-English learners of French: Language experience, consonantal context, and the perception-production relationship
Creators: name: Levy, Erika S.
name: Law II, Franzo
Publisher: name: Columbia University
Year: 2010
Subjects: French language--Study and teaching--English speakers
French language--Vowels
French language--Pronunciation by foreign speakers
Second language acquisition
Auditory perception

description: Second-language (L2) speech perception studies have demonstrated effects of language background and consonantal context on categorization and discrimination of vowels. The present study examined the effects of language experience and consonantal context on the production of Parisian French (PF) vowels by American English (AE) learners of French. Native AE speakers repeated PF vowels /i-y-u-œ-a/ in bilabial /bVp/ and alveolar /dVt/ contexts embedded in the phrase /raCVCa/. Three AE groups participated: speakers without French experience (NoExp), speakers with formal French experience (ModExp), and speakers with formal-plus-immersion experience (HiExp). Production accuracy was assessed by native PF listeners’ judgments and by acoustic analysis. PF listeners identified L2 learners’ productions more accurately when the learners had extensive language experience, although /y-u-œ/ by even HiExp speakers were frequently misidentified. A consonantal context effect was evident, including /u/ produced by ModExp misidentified more often in alveolar context than in bilabial, and /y/ misidentified more often in bilabial than in alveolar context, suggesting cross-language transfer of coarticulatory rules. Overall, groups distinguished front rounded /y/ from /u/ in production, but often in a non-native manner, e.g., producing /y/ as /uj/. Examination of perceptual data from the same individuals revealed a modest, yet complex, perception-production link for L2 vowels.
PERFORMANCE OF MULTIUSER ZERO-FORCING V-BLAST UNDER 1-BIT FEEDBACK FOR USER SCHEDULING
Creators: name: Amelia, Katherin
name: özyurt, serdar
name: Namdar, Mustafa
Publisher: name: figshare
Year: 2022
Subjects: Electrical engineering not elsewhere classified
Wireless communication systems and technologies (incl. microwave and millimetrewave)

description: Multiple-input multiple-output (MIMO) system has been acknowledged its capabilities in both achieving high capacity and being reliable over fading channels compared with other wireless communication systems. Many algorithms have been proposed in order to reduce the interference in the received signals of MIMO system. Increasing the data rate and capacity of the system is the main goal of every improvement being made on the transmission schemes of MIMO system. The Vertical Bell Laboratories Layered Space-Time (V-BLAST) system with zero-forcing (ZF) nulling scheme likely has drawn more attention on account of its high spectral efficiency result and comparatively low complexity compared with other transmission approaches. ZF V-BLAST technique achieves full spatial multiplexing gain through parallel and layered transmission without any requirement of channel state information (CSI) being known at the transmitter side. The original V-BLAST concept is based on a single-user scenario developed by Gerard Foschini at Bell Laboratories. In this paper, we study the performance of a downlink multiuser V-BLAST system where a single-user is scheduled in every time slot by the base station. The transmitter is assumed to have two antennas whereas all the users are equipped with r (r ≥ 2) antennas. Each user feeds back a single bit related to the sub-channel gain of its own channel matrix. Then, the transmitter chooses one user and communicates with it. Assuming uncorrelated antennas with Rayleigh fading, we investigate the outage probability of the system. A comparison with the analog feedback is carried out.
title: Ανάλυση δεδομένων διαγραφιών για την αξιολόγηση γεωλογικών σχηματισμών στην περιοχή Blackfoot, Αλμπέρτα, Καναδά
Creators: name: Μοσχου Γεωργια
Publisher: name: Technical University of Crete
Year: 2019

description: Κατά την έρευνα, αλλά και εκμετάλλευση υδρογονανθράκων, οι γεωφυσικές μέθοδοι που εφαρμόζονται μέσα σε γεωτρήσεις, παίζουν σημαντικό ρόλο στην αξιολόγηση των διατρηθέντων γεωλογικών σχηματισμών. Ειδικότερα αποσκοπούν στον καθορισμό της λιθολογίας και των φυσικών ιδιοτήτων των σχηματισμών, καθώς επίσης επιδιώκεται ο χαρακτηρισμός και η εκτίμηση της ποσότητας των ρευστών που περιέχουν. Οι φυσικές ποσότητες που μετρώνται μέσα στις γεωτρήσεις συνήθως παρίστανται σε διαγράμματα συναρτήσει του βάθους, τα οποία ονομάζονται διαγραφίες (Well Logs).

Στην παρούσα διπλωματική εργασία αξιολογήθηκαν τα δεδομένα διαγραφιών δέκα γεωτρήσεων από την περιοχή Blackfoot της Αλμπέρτα στον Καναδά. Στις εν λόγω γεωτρήσεις πραγματοποιήθηκαν διαγραφίες διαμετρήματος, πορώδους (ακουστικές, πυκνότητας και νετρονίου), φυσικού δυναμικού, φυσικής ραδιενέργειας, καθώς και ηλεκτρικές διαγραφίες. Πραγματοποιήθηκε η απεικόνιση των δεδομένων και ο χαρακτηρισμός των σχηματισμών σε περατούς και μη, με βάση την εκτίμηση του όγκου των αργιλικών προσμίξεων από τον συνδυασμό των διαγραφιών φυσικού δυναμικού και φυσικής ραδιενέργειας. Επίσης, υπολογίστηκαν οι τιμές του ολικού πορώδους (φ) από τις διαγραφίες πυκνότητας και νετρονίου, του πρωτογενούς πορώδους (φsonic) από τις ακουστικές διαγραφίες καθώς και της ειδικής ηλεκτρικής αντίστασης του νερού του σχηματισμού (Rw), μέσω της τεχνικής Rwa, αλλά και μέσω του συνδυασμού των διαγραφιών ηλεκτρικής αντίστασης και πορώδους (διαγράμματα Pickett και Hingle). Επιπλέον, δημιουργήθηκαν συνδυαστικά γραφήματα (cross-plots) για τα δεδομένα των ηλεκτρικών διαγραφιών και των διαγραφιών πορώδους από όπου προέκυψαν πληροφορίες για την ζώνη διείσδυσης του διηθήματος του γεωτρητικού πολφού, αλλά και την λιθολογία των σχηματισμών, αντίστοιχα. Τέλος, υπολογίστηκε ο βαθμός κορεσμού σε νερό (Sw) των περατών σχηματισμών, υπό την προϋπόθεση της απουσίας αργιλικών προσμίξεων και εντοπίστηκαν θέσεις με ικανοποιητικές συγκεντρώσεις υδρογονανθράκων (pay).

Με βάση τα αποτελέσματα της ανάλυσης των δεδομένων των διαγραφιών, προέκυψε ότι οι τιμές της ειδικής ηλεκτρικής αντίστασης του νερού του σχηματισμού (Rw) που υπολογίστηκαν από την τεχνική Rwa και τα διαγράμματα Pickett και Hingle παρουσιάζουν μικρές διαφορές μεταξύ τους. Σε 8 από τις 10 γεωτρήσεις εντοπίστηκαν, σε ασβεστολιθικής, κυρίως, σύστασης σχηματισμούς, θέσεις με ικανοποιητικές συγκεντρώσεις υδρογονανθράκων, ενώ παράλληλα υπάρχουν ενδείξεις για ύπαρξη φυσικού αερίου. Ωστόσο, στις θέσεις που υπάρχουν ενδείξεις, ο βαθμός κορεσμού σε νερό που έχει προσδιοριστεί στους περατούς σχηματισμούς, είναι πολύ πιθανόν να επηρεάζεται από την ύπαρξη αργιλικών προσμίξεων. Για το λόγο αυτό προτείνεται η επανεξέταση των δεδομένων υπό την θεώρηση ύπαρξης αργιλικών προσμίξεων στους περατούς σχηματισμούς.
Language experience and consonantal context effects on perceptual assimilation of French vowels by American-English learners of French
Creators: name: Levy, Erika S.
Publisher: name: Columbia University
Year: 2009
Subjects: French language--Study and teaching--English speakers
French language--Pronunciation by foreign speakers
French language--Vowels
Second language acquisition
Auditory perception

description: Recent research has called for an examination of perceptual assimilation patterns in second-language speech learning. This study examined the effects of language learning and consonantal context on perceptual assimilation of Parisian French (PF) front rounded vowels /y/ and /œ/ by American English (AE) learners of French. AE listeners differing in their French language experience (no experience, formal instruction, formal-plus-immersion experience) performed an assimilation task involving PF /y, œ, u, o, i, ε, a/ in bilabial /rabVp/ and alveolar /radVt/ contexts, presented in phrases. PF front rounded vowels were assimilated overwhelmingly to back AE vowels. For PF /œ/, assimilation patterns differed as a function of language experience and consonantal context. However, PF /y/ revealed no experience effect in alveolar context. In bilabial context, listeners with extensive experience assimilated PF /y/ to /^ju/ less often than listeners with no or only formal experience, a pattern predicting the poorest /u-y/ discrimination for the most experienced group. An “internal consistency” analysis indicated that responses were most consistent with extensive language experience and in bilabial context. Acoustical analysis revealed that acoustical similarities among PF vowels alone cannot explain context-specific assimilation patterns. Instead it is suggested that native-language allophonic variation influences context-specific perceptual patterns in second-language learning.
title: Архитектурная композиция в реставрационном проектировании
Creators: name: ELS IPR BOOKS
Publisher: name: Самарский государственный технический университет, ЭБС АСВ
Year: 2020

description: Предназначено для студентов 1, 2-го курсов специальности 07.03.02 «Реконструкция и реставрация архитектурного наследия»; цель – развитие самостоятельных композиционных навыков и подготовка к архитектурному проектированию. Рассмотрены теоретические положения архитектурной композиции и даны рекомендации по выполнению практических занятий, которые развивают композиционные навыки студентов и помогают выходить на индивидуальные проектные решения. В качестве иллюстративного материала (приложения 2, 3) использованы работы студентов 1, 2-го курсов кафедры РиРАН, выполненные на занятиях по композиционному моделированию.
title: Биотехнология пищевых продуктов
Creators: name: ELS IPR BOOKS
Publisher: name: Самарский государственный технический университет, ЭБС АСВ
Year: 2020

description: Предназначен для магистрантов, обучающихся по направлению 19.04.02 «Продукты питания из растительного сырья», профиль «Инновационные технологии продуктов питания на основе растительного сырья», и изучающих дисциплину «Биотехнология пищевых производств». Материал соответствует профилю направления подготовки магистров и рекомендуется в учебном процессе для магистрантов, слушателей курсов повышения квалификации, а также специалистов пищевой промышленности.
CGC: an open-source Python module for geospatial data clustering
Creators: name: Nattino, Francesco
Publisher: name: Zenodo
Year: 2022
Subjects: research software
software development
co-clustering
tri-clustering
cluster refinement
distributed computing

description: The Clustering Geo-Data Cubes (CGC) package focuses on the needs of geospatial data scientists who require tools to make sense of multi-dimensional data cubes by performing co-cluster and tri-cluster analyses on both local and distributed systems. The package provides iterative co-clustering (2D) and tri-clustering (3D) algorithms with optional cluster refinement step, which can be run on a single workstation or on a computing cluster by using parallel and distributed computing capabilities of Dask.
Strongly exponential symmetric spaces
Creators: name: Voglaire, Yannick
Publisher: name: arXiv
Year: 2013
Subjects: subject: Differential Geometry (math.DG)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53C35 (Primary), 53D22 (Secondary)

description: We study the exponential map of connected symmetric spaces and characterize, in terms of midpoints and of infinitesimal conditions, when it is a diffeomorphism, generalizing the Dixmier-Saito theorem for solvable Lie groups. We then give a geometric characterization of the (strongly) exponential solvable symmetric spaces as those spaces for which every triangle admits a unique double triangle. This work is motivated by Weinstein's quantization by groupoids program applied to symmetric spaces.
description: Some corrections and typos. To appear in International Mathematics Research Notices
On the assimilation-discrimination relationship in American English adults' French vowel learning
Creators: name: Levy, Erika S.
Publisher: name: Columbia University
Year: 2009
Subjects: French language--Study and teaching--English speakers
French language--Pronunciation by foreign speakers
French language--Vowels
Second language acquisition
Auditory perception

description: A quantitative “cross-language assimilation overlap” method for testing predictions of the Perceptual Assimilation Model (PAM) was implemented to compare results of a discrimination experiment with the listeners’ previously reported assimilation data. The experiment examined discrimination of Parisian French (PF) front rounded vowels /y/ and /œ/. Three groups of American English listeners differing in their French experience (no experience [NoExp], formal experience [ModExp], and extensive formal-plus-immersion experience [HiExp]) performed discrimination of PF /y-u/, /y-o/, /œ-o/, /œ-u/, /y-i/, /y-ɛ/, /œ-ɛ/, /œ-i/, /y-œ/, /u-i/, and /a-ɛ/. Vowels were in bilabial /rabVp/ and alveolar /radVt/ contexts. More errors were found for PF front vs back rounded vowel pairs (16%) than for PF front unrounded vs rounded pairs (2%). Overall, ModExp listeners did not perform more accurately (11% errors) than NoExp listeners (13% errors). Extensive immersion experience, however, was associated with fewer errors (3%) than formal experience alone, although discrimination of PF /y-u/ remained relatively poor (12% errors) for HiExp listeners. More errors occurred on pairs involving front vs back rounded vowels in alveolar context (20% errors) than in bilabial (11% errors). Significant correlations were revealed between listeners’ assimilation overlap scores and their discrimination errors, suggesting that the PAM may be extended to second-language (L2) vowel learning.
title: Введение в контекстуальное проектирование. Метод композиционной согласованности при реконструкции и реставрации архитектурного наследия
Creators: name: ELS IPR BOOKS
Publisher: name: Самарский государственный технический университет, ЭБС АСВ
Year: 2020

description: Рассмотрены проблемы контекстуального проектирования – реконструкции и нового строительства в условиях сложившейся исторической застройки. Архитектурный контекст – это совокупность зданий, материальных объектов, воспринимаемых визуально и осязательно. И одновременно это то, что мы знаем об этой совокупности зданий, то, чем люди могут обмениваться между собой: тексты, рассказы, мнения и изображения. Проектирование в контексте – это коммуникация с прежними поколениями, нынешними и будущими. Пособие поможет будущему архитектору, а также всем тем, кого интересует город как материально закрепленная история, познакомиться с основными подходами, методами и категориями архитектуры, понимаемой как метод межпоколенческой и межчеловеческой коммуникации. Предназначено для студентов архитектурных факультетов по направлениям подготовки «Архитектура», «Градостроительство», «Реконструкция и реставрация архитектурного наследия» бакалавриата и магистратуры.
title: Φασματική απεικόνιση για την ποσοτική χαρτογράφηση δομικών χαρακτηριστικών φυτών διαγνωστικής σημασίας
Creators: name: Πάντος Μηνάς
Publisher: name: Technical University of Crete
Year: 2004

description: Μη διαθέσιμο
title: Σχεδιασμός και μελέτη απόδοσης πρωτοκόλλου τυχαίας προσπέλασης για ασύρματα δίκτυα ολοκληρωμένων υπηρεσιών φωνής-δεδομένων
Creators: name: Ρομπογιαννάκης Ιωάννης
Publisher: name: Technical University of Crete
Year: 1996

description: Μη διαθέσιμο
title: Σχεδιασμός και υλοποίηση κινητού συστήματος παρουσίασης τουριστικών πληροφοριών με τη χρήση πολυμέσων
Creators: name: Κοντογιάννης Παναγιώτης
Publisher: name: Technical University of Crete
Year: 1996

description: Μη διαθέσιμο
title: Υπολογισμός θερμοδυναμικών ιδιοτήτων πετρελαίου με βάση τις καταστατικές εξισώσεις
Creators: name: Φρανσέ Αίμυλυ
Publisher: name: Technical University of Crete
Year: 1999

description: Μη διαθέσιμο
Structure of complex networks: Quantifying edge-to-edge relations by failure-induced flow redistribution
Creators: name: Schaub, Michael T.
name: Lehmann, Jörg
name: Yaliraki, Sophia N.
name: Barahona, Mauricio
Publisher: name: arXiv
Year: 2013
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The analysis of complex networks has so far revolved mainly around the role of nodes and communities of nodes. However, the dynamics of interconnected systems is commonly focalised on edge processes, and a dual edge-centric perspective can often prove more natural. Here we present graph-theoretical measures to quantify edge-to-edge relations inspired by the notion of flow redistribution induced by edge failures. Our measures, which are related to the pseudo-inverse of the Laplacian of the network, are global and reveal the dynamical interplay between the edges of a network, including potentially non-local interactions. Our framework also allows us to define the embeddedness of an edge, a measure of how strongly an edge features in the weighted cuts of the network. We showcase the general applicability of our edge-centric framework through analyses of the Iberian Power grid, traffic flow in road networks, and the C. elegans neuronal network.
description: 24 pages, 6 figures
Acoustic variability within and across German, French, and American English vowels: Phonetic context effects
Creators: name: Strange, Winifred
name: Weber, Andrea
name: Levy, Erika S.
name: Shafiro, Valeriy
name: Hisagi, Miwako
name: Nishi, Kanae
Publisher: name: Columbia University
Year: 2007
Subjects: French language--Vowels
German language--Vowels
English language--Vowels
Auditory perception
Language and languages

description: Cross-language perception studies report influences of speech style and consonantal context on perceived similarity and discrimination of non-native vowels by inexperienced and experienced listeners. Detailed acoustic comparisons of distributions of vowels produced by native speakers of North German (NG), Parisian French (PF) and New York English (AE) in citation (di)syllables and in sentences (surrounded by labial and alveolar stops) are reported here. Results of within- and cross-language discriminant analyses reveal striking dissimilarities across languages in the spectral/temporal variation of coarticulated vowels. As expected, vocalic duration was most important in differentiating NG vowels; it did not contribute to PF vowel classification. Spectrally, NG long vowels showed little coarticulatory change, but back/low short vowels were fronted/raised in alveolar context. PF vowels showed greater coarticulatory effects overall; back and front rounded vowels were fronted, low and mid-low vowels were raised in both sentence contexts. AE mid to high back vowels were extremely fronted in alveolar contexts, with little change in mid-low and low long vowels. Cross-language discriminant analyses revealed varying patterns of spectral (dis)similarity across speech styles and consonantal contexts that could, in part, account for AE listeners’ perception of German and French front rounded vowels, and “similar” mid-high to mid-low vowels.
title: Введение в органическую химию. Углеводороды
Creators: name: ELS IPR BOOKS
Publisher: name: Самарский государственный технический университет, ЭБС АСВ
Year: 2020

description: Приведены вопросы и задачи по изомерии, номенклатуре, строению, способам получения и химическим свойствам основных классов органических соединений. Составлен в соответствии с программой курса органической химии для студентов, обучающихся по направлению 04.03.01 «Химия» и по специальности 04.05.01 «Фундаментальная и прикладная химия», а также для студентов, занимающихся углубленным изучением органической химии.
title: Выбор состава основного оборудования и расчет тепловой схемы ТЭЦ с турбинами типа ПТ и Р
Creators: name: ELS IPR BOOKS
Publisher: name: Самарский государственный технический университет, ЭБС АСВ
Year: 2020

description: Даны рекомендации по выбору состава основного оборудования и расчету тепловой схемы промышленной и промышленно-отопительной ТЭЦ, содержащей теплофикационные с регулируемыми отборами и противодавленческие турбоагрегаты. Приведен пример расчета тепловой схемы паротурбинной ТЭЦ с турбинами типа ПТ и Р. Материал предназначен для студентов бакалавриата и магистратуры теплоэнергетических специальностей вузов и факультетов, обучающихся по направлениям подготовки 13.03.01 — Теплоэнергетика и теплотехника, 13.03.03 — Энергетическое машиностроение, а также для аспирантов и инженерно-технических работников электростанций.
title: Εφαρμογή δονημετρικού προγράμματος στο ορυχείο του Νοτίου πεδίου στο Λιγνιτικό κέντρο Πτολεμαϊδας-Αμυνταίου
Creators: name: Τσαμπής Κυριάκος
Publisher: name: Technical University of Crete
Year: 2000

description: Μη διαθέσιμο
Cross-language categorization of French and German vowels by naïve American listeners
Creators: name: Strange, Winifred
name: Levy, Erika S.
name: Law II, Franzo
Publisher: name: Columbia University
Year: 2009
Subjects: French language--Vowels
German language--Vowels
Language and languages
Auditory perception

description: American English (AE) speakers’ perceptual assimilation of 14 North German (NG) and 9 Parisian French (PF) vowels was examined in two studies using citation-form disyllables (study 1) and sentences with vowels surrounded by labial and alveolar consonants in multisyllabic nonsense words (study 2). Listeners categorized multiple tokens of each NG and PF vowel as most similar to selected AE vowels and rated their category “goodness” on a nine-point Likert scale. Front, rounded vowels were assimilated primarily to back AE vowels, despite their acoustic similarity to front AE vowels. In study 1, they were considered poorer exemplars of AE vowels than were NG and PF back, rounded vowels; in study 2, front and back, rounded vowels were perceived as similar to each other. Assimilation of some front, unrounded and back, rounded NG and PF vowels varied with language, speaking style, and consonantal context. Differences in perceived similarity often could not be predicted from context-specific cross-language spectral similarities. Results suggest that listeners can access context-specific, phonetic details when listening to citation-form materials, but assimilate non-native vowels on the basis of context-independent phonological equivalence categories when processing continuous speech. Results are interpreted within the Automatic Selective Perception model of speech perception.
Stronger accent following a stroke—the case of a trilingual with aphasia
Creators: name: Levy, Erika S.
name: Goral, Mira
name: Castelluccio De Diesbach, Catharine
name: Law II, Franzo
Publisher: name: Columbia University
Year: 2011
Subjects: Aphasia
Accents and accentuation
Multilingualism
Hearing

description: This study documents patterns of change in speech production in a multilingual with aphasia following a cerebrovascular accident (CVA). EC, a right-handed Hebrew-English-French trilingual man, had a left fronto-temporo-parietal CVA, after which he reported that his (native) Hebrew accent became stronger in his (second-language) English. Recordings of his pre- and post-CVA speech permitted an investigation of changes in his accent. In sentence and segment listening tasks, native American English (AE) listeners (n=13 and 15, respectively) judged EC’s pre-CVA and post-CVA speech. EC’s speech was perceived as more foreign-accented, slow, strained, and hesitant, but not less intelligible, post-CVA. Acoustic analysis revealed less coarticulation and longer vowel- and word-durations post-CVA. This case extends knowledge about perceptual and acoustic changes in speech production in multilinguals following CVAs. It is argued that EC’s stronger accent post-CVA may have resulted from damage to the neuronal networks that led to impairment in his other language domains.
On the partitions with Sturmian-like refinements
Creators: name: Kupsa, Michal
name: Starosta, Štepán
Publisher: name: arXiv
Year: 2013
Subjects: subject: Dynamical Systems (math.DS)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 37B10, 68R15

description: In the dynamics of a rotation of the unit circle by an irrational angle $α\in(0,1)$, we study the evolution of partitions whose atoms are finite unions of left-closed right-open intervals with endpoints lying on the past trajectory of the point $0$. Unlike the standard framework, we focus on partitions whose atoms are disconnected sets. We show that the refinements of these partitions eventually coincide with the refinements of a preimage of the Sturmian partition, which consists of two intervals $[0,1-α)$ and $[1-α,1)$. In particular, the refinements of the partitions eventually consist of connected sets, i.e., intervals. We reformulate this result in terms of Sturmian subshifts: we show that for every non-trivial factor mapping from a one-sided Sturmian subshift, satisfying a mild technical assumption, the sliding block code of sufficiently large length induced by the mapping is injective.
description: 20 pages, 6 figures
Beliefs regarding the impact of accent within speech-language pathology practice areas
Creators: name: Levy, Erika S.
name: Crowley, Catherine J.
Publisher: name: Columbia University
Year: 2012
Subjects: Speech therapy
Speech therapists
Speech therapists--Training of
Accents and accentuation
Language and languages--Variation

description: With the demographic shifts in the U.S., it is increasingly the case that speech-language pathologists (SLPs) come from different language backgrounds from those of their clients and have non-native accents in their languages of service. An anonymous web-based survey was completed by students and clinic directors in SLP training programs in New York State regarding their beliefs about the appropriate scope of practice of SLPs with accents in English and other languages. Responses were received from 28 directors and 530 students. Perceived appropriateness of service by accented clinicians depended on particular disorders serviced and degree of accent, with phonologically-based services believed by the greatest number of respondents to require more native-like speech than other areas. Further efforts must be made to research effects of SLPs’ accents on service delivery and plan strategies, if needed, for successful service provision in SLPs’ diverse areas of practice when mismatches in language backgrounds occur.
The Physics of crypto-nonlocality
Creators: name: Navascues, Miguel
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In 2003, Leggett introduced his model of crypto-nonlocality based on considerations on the reality of the photon polarization. In this note, we prove that, contrary to hints in subsequent literature, crypto-nonlocality does not follow naturally from the postulate that polarization is a realistic variable. More explicitly, consider physical theories where: a) faster-than-light communication is impossible; b) all physical photon states have a definite polarization; and c) given two separate photons, if we measure one of them and post-select on the result, the measurement statistics of the remaining system correspond to a photon state. We show that the outcomes of any two-photon polarization experiment in these theories must follow the statistics generated by measuring a separable two-qubit quantum state. Consequently, in such experiments any instance of entanglement detection -and not necessarily a Leggett inequality violation- can be regarded as a refutation of this class of theories.
description: Published version
Policies and practices regarding students with accents in speech-language pathology training programs.
Creators: name: Levy, Erika S.
name: Crowley, Catherine J.
Publisher: name: Columbia University
Year: 2012
Subjects: Speech therapy
Speech therapists--Training of
Accents and accentuation
Language and languages--Variation

description: Speech-language pathology (SLP) training programs are the initial gateway for non-native speakers of English to join the SLP profession. An anonymous web-based survey in New York State examined policies and practices implemented when SLP students have foreign accents in English or in other languages. Responses were elicited from 530 students and 28 clinic and program directors. Few policies delineated criteria for determining how native-like or intelligible students’ speech needed to be in order for them to work effectively or for determining when accent modification was required. Students with foreign accents in English were asked more often to undergo accent modification than were students with foreign accents in Spanish or other languages. Strategies for practices regarding SLP students with accents are proposed.
Coloring planar graphs with three colors and no large monochromatic components
Creators: name: Esperet, Louis
name: Joret, Gwenaël
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We prove the existence of a function $f :\mathbb{N} \to \mathbb{N}$ such that the vertices of every planar graph with maximum degree $Δ$ can be 3-colored in such a way that each monochromatic component has at most $f(Δ)$ vertices. This is best possible (the number of colors cannot be reduced and the dependence on the maximum degree cannot be avoided) and answers a question raised by Kleinberg, Motwani, Raghavan, and Venkatasubramanian in 1997. Our result extends to graphs of bounded genus.
description: v3: fixed a notation issue in Section 3
A new flavonoid glycoside from Tapinanthus sp. (Loranthaceae) and evaluation of anticancer activity of extract and some isolated compounds
Creators: name: Gade, Isaac Silvère
name: Chadeneau, Corinne
name: Richard, Tagne Simo
name: De Théodore Atchade, Alex
name: Talla, Emmanuel
name: Seite, Paul
name: Vannier, Brigitte
name: Guillard, Jérôme
name: Laurent, Sophie
name: Henoumont, Celine
name: Nwabo, Armel H. Kamdje
name: Muller, Jean-Marc
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: Plant Biology

description: The present work describes the isolation and anticancer activity of Tapinanthus sp. which is a hemi parasitic plant harvested on Combretum glutinosum, the host plant. Phytochemical study afforded a new flavonoid glycoside, tapinantoside (1) isolated for the first time from natural source, alongside six known compounds (2-7). Structure of compounds were elucidated by extensive spectroscopic analyses including 1 D and 2 D NMR, mass spectrometry and by comparison with literature data. The anticancer activity of extract and some isolated compounds were evaluated on glioblastoma (U87MG, C6) and prostate (PC-3) cancer cells. The methanol leaves extract showed good anticancer activity against U87 (IC50 = 21.40 µg/mL) and PC-3 cells (IC50 = 10.26 µg/mL). Compound 3 powerfully inhibits the proliferation of C6 (IC50 = 38.84 µM) and PC-3 cells (IC50 = 21.33 µM), while its effect was moderated on U87MG cells. Compound 1 and 7 were not active on all tested cancer cell lines.
Hemispheric processing of vocal emblem sounds
Creators: name: Neumann-Werth, Yael
name: Levy, Erika S.
name: Obler, Loraine K.
Publisher: name: Columbia University
Year: 2013
Subjects: Aphasia
Cerebral hemispheres
Brain damage
Speech

description: Vocal emblems, such as shh and brr, are speech sounds that have linguistic and nonlinguistic features; thus, it is unclear how they are processed in the brain. Five adult dextral individuals with left-brain damage and moderate–severe Wernicke’s aphasia, five adult dextral individuals with right-brain damage, and five Controls participated in two tasks: (1) matching vocal emblems to photographs (‘picture task’) and (2) matching vocal emblems to verbal translations (‘phrase task’). Cross-group statistical analyses on items on which the Controls performed at ceiling revealed lower accuracy by the group with left-brain damage (than by Controls) on both tasks, and lower accuracy by the group with right-brain damage (than by Controls) on the picture task. Additionally, the group with left-brain damage performed significantly less accurately than the group with right-brain damage on the phrase task only. Findings suggest that comprehension of vocal emblems recruits more left- than right-hemisphere processing.
Oliver and Rivera-Collazo (2015) A Reassessment of María de La Cruz Cave Site, Puerto Rico: The 2012 Excavations (published version)
Creators: name: Oliver, Jose R.
name: Rivera-Collazo, Isabel
Publisher: name: figshare
Year: 2022
Subjects: Archaeology

description: The results of the 2012 excavation at this cave are discussed and compared with those of obtained previously by Alegría. Our study confirms Alegría’s stratigraphic sequence. The new date (Cal. AD 20-210) fits well with two others reported previously. The evidence shows that from its inception the Archaic group interacted with nearby Saladoid settlers. The cave had a specialized function: a locus for processing and consuming a limited range of hunted and gathered wild resources during this early phase. The upper strata indicate that by this time (AD400-600>) the Archaic group had vacated the cave and that the activities related only to groups bearing Saladoid and Monserrate ceramics. This late phase is marked by two changes: intensive limestone rock burning and a different funerary practice (random bone scattering). We conclude that the cave was not used as residential locus but as a logistical station for specialized food processing activities. The Archaic probably resided in open sites (yet to be identified), whereas the Saladoid most likely resided in Hacienda Grande and/or Vacía Talega. Although the cave was occasionally a locus of funerary rituals it was not exclusively dedicated to religious ceremonialism.
Linear Difference Equations with a Transition Point at the Origin
Creators: name: Cao, Lihua
name: Li, Yutian
Publisher: name: arXiv
Year: 2013
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 41A60, 39A10, 33C45

description: A pair of linearly independent asymptotic solutions are constructed for the second-order linear difference equation {equation*} P_{n+1}(x)-(A_{n}x+B_{n})P_{n}(x)+P_{n-1}(x)=0, {equation*} where $A_n$ and $B_n$ have asymptotic expansions of the form {equation*} A_n\sim n^{-θ}\sum_{s=0}^\infty\frac{α_s}{n^s},\qquad B_n\sim\sum_{s=0}^\infty\frac{β_s}{n^s}, {equation*} with $θ\neq0$ and $α_0\neq0$ being real numbers, and $β_0=\pm2$. Our result hold uniformly for the scaled variable $t$ in an infinite interval containing the transition point $t_1=0$, where $t=(n+τ_0)^{-θ} x$ and $τ_0$ is a small shift. In particular, it is shown how the Bessel functions $J_ν$ and $Y_ν$ get involved in the uniform asymptotic expansions of the solutions to the above three-term recurrence relation. As an illustration of the main result, we derive a uniform asymptotic expansion for the orthogonal polynomials associated with the Laguerre-type weight $x^α\exp(-q_mx^m)$, $x>0$, where $m$ is a positive integer, $α>-1$ and $q_m>0$.
description: 33 pages, reference updated