cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
When Machine Unlearning Jeopardizes Privacy
Creators: name: Chen, Min
name: Zhang, Zhikun
name: Wang, Tianhao
name: Backes, Michael
name: Humbert, Mathias
name: Zhang, Yang
Publisher: name: CISPA
Year: 2023

description: The right to be forgotten states that a data owner has the right to erase their data from an entity storing it. In the context of machine learning (ML), the right to be forgotten requires an ML model owner to remove the data owner's data from the training set used to build the ML model, a process known as machine unlearning. While originally designed to protect the privacy of the data owner, we argue that machine unlearning may leave some imprint of the data in the ML model and thus create unintended privacy risks. In this paper, we perform the first study on investigating the unintended information leakage caused by machine unlearning. We propose a novel membership inference attack that leverages the different outputs of an ML model's two versions to infer whether a target sample is part of the training set of the original model but out of the training set of the corresponding unlearned model. Our experiments demonstrate that the proposed membership inference attack achieves strong performance. More importantly, we show that our attack in multiple cases outperforms the classical membership inference attack on the original ML model, which indicates that machine unlearning can have counterproductive effects on privacy. We notice that the privacy degradation is especially significant for well-generalized ML models where classical membership inference does not perform well. We further investigate four mechanisms to mitigate the newly discovered privacy risks and show that releasing the predicted label only, temperature scaling, and differential privacy are effective. We believe that our results can help improve privacy protection in practical implementations of machine unlearning. Our code is available at this https URL.
LC reductions yield isomorphic simplicial complexes
Creators: name: Matoušek, Jiří
Publisher: name: Faculty of Science, University of Calgary
Year: 2008

description: We say that a vertex $v$ of a finite simplicial complex $K4 is LC-removable if the link of $v$ is a cone, and that $K$ is LC-irreducible if it has no LC-removable vertices. Answering a question of Civan and Yal\,cın [J. Comb. Theory Ser. A(2007), doi:10.1016/j.jcta.2007.02.001], we prove that all LC-irreducible simplicial complexes that can be obtained from a given $K$ by repeatedly deleting LC-removable vertices (plus all simplices containing them) are isomorphic.
description: Contributions to Discrete Mathematics, Vol 3, No 2 (2008)
Supersolid phases of cold atom assemblies
Creators: name: Boninsegni, Massimo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We review recent theoretical results for soft-core Bose systems, and describe the low-temperature supersolid "droplet crystal" phase, predicted for a broad class of soft-core interactions. We identify the conditions on the inter-particle interaction that render such intriguing phase possible, and outline proposals for its observation. We argue this to be the prototypical supersolid, at least in the context of assemblies of ultracold atoms.
description: 14 pages, 5 figures, to be included in upcoming special issue of Journal of Low Temperature Physics devoted to supersolids
ТЕРМИНЫ РОДСТВА И СВОЙСТВА ТУВИНЦЕВ КОБДОСКОГО АЙМАКА МОНГОЛИИ
Creators: name: Уламсурен Цэцэгдарь
Publisher: name: Вестник Тувинского государственного университета. Социальные и гуманитарные науки
Year: 2020
Subjects: Кобдоский аймак; родство; свойство; термин; юрта; элементы

description: В статье приведены результаты исследования терминологии родства и свойства тувинцев Кобдоского аймака Северо-Западной Монголии. Помимо номенклатуры родства и свойства, автор рассматривает и термины элементов юрты, так как они тесно связаны с семейно-родственными отношениями. Для анализа были отобраны только те лексемы тувинцев Кобдо, которые отличаются от тувинских литературных. Актуальность исследуемой проблемы обусловлена малой изученностью данного направления в тувинском языкознании и необходимостью восполнения этого пробела. Выявлены особенности в данной группе лексики в языке тувинцев Кобдо в сравнении с литературным тувинским языком. При написании статьи привлечены полевые материалы автора (аудиои видеозаписи с непрерывной длительностью звучания свыше 60 часов), собранные с 1992 года по 2011 год во время диалектологических экспедиций.
Colourful transversal theorems
Creators: name: Oliveros, Deborah
name: Montejano, Luis
Publisher: name: Faculty of Science, University of Calgary
Year: 2008

description: We prove the colourful versions of three clasical transversal theorems: The Katchalski-Lewis Theorem "T(3) implies T-k", the "T(3) implies T" Theorem for well distributed sets, and the Goodmann-Pollack Transversal Theorem for hyperplanes.
description: Contributions to Discrete Mathematics, Vol 3, No 2 (2008)
В КАЖДОЙ СЕМЬЕ – НЕ МЕНЕЕ ОДНОГО РЕБЕНКА С ВЫСШИМ ОБРАЗОВАНИЕМ
Creators: name: Харунова Марианна Монге-Байыровна
Publisher: name: Вестник Тувинского государственного университета. Социальные и гуманитарные науки
Year: 2020
Subjects: Тува; губернаторский проект; семья; высшее образование; участники проекта; меры социальной поддержки

description: Для оказания помощи семьям, не имеющим в трех поколениях детей с высшим образованием, в Республике Тыва с 2014 г. реализуется губернаторский проект. В статье рассмотрены основные принципы организации работы с семьями по данному проекту, межведомственное взаимодействие по культурному воспитанию и образованию детей, профориентационная работа, проанализировано педагогическое сопровождение его участников на разных этапах обучения. Показаны индикативные показатели, ожидаемые результаты и динамика поступления выпускников в высшие учебные заведения за 2014-2017 гг. Особо отмечено участие в реализации проекта Тувинского государственного университета, а также других научных и образовательных учреждений республики. Рассмотрена методическая помощь учителям предметникам по сопровождению обучающихся – участников проекта. Обозначены основные направления государственной поддержки выпускников и студентов. Определены сильные и слабые стороны в реализации проекта «В каждой семье – не менее одного ребенка с высшим образованием».
The growth and diet composition of sockeye salmon smolts in Rivers Inlet, British Columbia
Creators: name: Ajmani, Asha Megan
Publisher: name: University of British Columbia
Year: 2011

description: In the early life history of sockeye salmon smolts, prey availability (quality and quantity) and growth are strongly linked. During this critical period, when ~ 90% of their mortality occurs, they must attain a critical size at which they have sufficient energy stores to survive their long migration with little predation impact, leading to better survival and higher returns. To determine patterns of growth of out-migrating sockeye salmon and to link inter-annual variations in growth to diet and seasonality of the zooplankton community, seine netting and zooplankton tows were conducted in May-June 2008, 2009, and 2010 in Rivers Inlet, British Columbia, a fjord with estuarine circulation. Growth rate, condition factor and mass-length relationships were calculated from length and mass data obtained from fresh fish. Stomachs were analyzed for total prey composition in terms of biomass and abundance. Growth rates were faster in 2009 and 2010 than in 2008; however, the condition factor was highest in 2010, and similar in 2009 and 2008. Mass-length relationships indicated that sockeye smolts were significantly heavier per unit length in 2010 (p < 0.05). Bottom-up controls on spring productivity acting through environmental forcing such as temperature and advection may be responsible for the slower growth in the 2008 out-migrating population of sockeye salmon smolts. In 2008, quality and quantity of prey available may have not provided enough energy to maintain metabolism and to support rapid growth, possibly due to a mismatch in timing between spring productivity and the migration of the smolts.
Astrophysical Evidence for the Non-Hermitian but $PT$-symmetric Hamiltonian of Conformal Gravity
Creators: name: Mannheim, Philip D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this review we discuss the connection between two seemingly disparate topics, macroscopic gravity on astrophysical scales and Hamiltonians that are not Hermitian but $PT$ symmetric on microscopic ones. In particular we show that the quantum-mechanical unitarity problem of the fourth-order derivative conformal gravity theory is resolved by recognizing that the scalar product appropriate to the theory is not the Dirac norm associated with a Hermitian Hamiltonian but is instead the norm associated with a non-Hermitian but $PT$-symmetric Hamiltonian. Moreover, the fourth-order theory Hamiltonian is not only not Hermitian, it is not even diagonalizable, being of Jordan-block form. With $PT$ symmetry we establish that conformal gravity is consistent at the quantum-mechanical level. In consequence, we can apply the theory to data, to find that the theory is capable of naturally accounting for the systematics of the rotation curves of a large and varied sample of 138 spiral galaxies without any need for dark matter. The success of the fits provides evidence for the relevance of non-diagonalizable but $PT$-symmetric Hamiltonians to physics.
description: LaTex, 15 pages, 21 figures. Expanded version of talks given at the International Seminar and Workshop "Quantum Physics with Non-Hermitian Operators", Dresden, June 2011 and the Symposium "PT Quantum Mechanics 2011", Heidelberg, September 2011. Prepared for a Special Issue of Fortschritte der Physik - Progress of Physics on "Quantum Physics with Non-Hermitian Operators: Theory and Experiment"
Supplementary document for Anomalous π Modes by Floquet Engineering in Optical Lattices with Long-range Coupling - 6137074.pdf
Creators: name: Wu, Shengjie
name: Song, Wange
name: Lin, Zhiyuan
name: Chen, Chen
name: Zhu, Shining
name: Li, Tao
Publisher: name: Optica Publishing Group
Year: 2022
Subjects: Uncategorized

description: Detailed theoretical calculation and experimental proposal
Innovation and Performance
Creators: name: Hyun, Soonchul
Publisher: name: Graduate Studies
Year: 2018
Subjects: subject: Accounting

description: My dissertation consists of three studies that connect innovation to performance in different ways. In my first study, I investigate how product quality, productivity, and customer satisfaction as intermediate performance measures capture information about current innovation activities and serve as leading indicators of future financial performance. My first study also investigates how these links from innovation to performance differ across strategies. Estimating seemingly unrelated regression (SUR) models, I find that increases in quality, productivity, and customer satisfaction are important value drivers that link different types of innovation to higher future ROS and sales growth. For differentiators, product innovations that increase product quality and customer satisfaction lead to higher performance. For cost leaders, improved process innovation that increases productivity leads to performance. In my second study, I consider how the introduction of new information technology (IT) and organizational change, as two types of organizational innovation activities, affect productivity over time. Measuring productivity improvements using data envelopment analysis (DEA), I find that new IT has a positive impact on organizational productivity in both the first and second years after the introduction of new IT. In contrast, organizational change has a negative productivity effect in the first year, followed by a positive effect in the second year. This pattern indicates that the beneficial effect of new IT is realized quickly, but organizational change has an initial disruptive effect before its beneficial effect on productivity is realized. I also find that new IT and organizational change have complementary effects on productivity. In my third study, I investigate how two strategic positions – differentiation (externally focused) and cost leadership (internally focused) – moderate the impact of innovation activities on operating performance. I use DEA to construct an aggregate performance index that combines the information in profit margin and sales growth as the dependent variable. Estimation results show that differentiation positively moderates the impact of product innovation on performance and cost leadership positively moderates the impact of process innovation on performance. This study demonstrates the importance of strategic capability and the alignment of strategy with innovation.
Quantifying and Mitigating Privacy Risks of Contrastive Learning
Creators: name: Xinlei.He
name: Zhang, Yang
Publisher: name: CISPA
Year: 2023

description: Data is the key factor to drive the development of machine learning (ML) during the past decade. However, high-quality data, in particular labeled data, is often hard and expensive to collect. To leverage large-scale unlabeled data, self-supervised learning, represented by contrastive learning, is introduced. The objective of contrastive learning is to map different views derived from a training sample (e.g., through data augmentation) closer in their representation space, while different views derived from different samples more distant. In this way, a contrastive model learns to generate informative representations for data samples, which are then used to perform downstream ML tasks. Recent research has shown that machine learning models are vulnerable to various privacy attacks. However, most of the current efforts concentrate on models trained with supervised learning. Meanwhile, data samples' informative representations learned with contrastive learning may cause severe privacy risks as well. In this paper, we perform the first privacy analysis of contrastive learning through the lens of membership inference and attribute inference. Our experimental results show that contrastive models trained on image datasets are less vulnerable to membership inference attacks but more vulnerable to attribute inference attacks compared to supervised models. The former is due to the fact that contrastive models are less prone to overfitting, while the latter is caused by contrastive models' capability of representing data samples expressively. To remedy this situation, we propose the first privacy-preserving contrastive learning mechanism, Talos, relying on adversarial training. Empirical results show that Talos can successfully mitigate attribute inference risks for contrastive models while maintaining their membership privacy and model utility.
Restoration of Rotational Symmetry in the Continuum Limit of Lattice Field Theories
Creators: name: Davoudi, Zohreh
name: Savage, Martin J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We explore how rotational invariance is systematically recovered from calculations on hyper-cubic lattices through the use of smeared lattice operators that smoothly evolve into continuum operators with definite angular momentum as the lattice-spacing is reduced. Perturbative calculations of the angular momentum violation associated with such operators at tree-level and at one-loop are presented in phi^4 theory and QCD. Contributions from these operators that violate rotational invariance occur at tree-level, with coefficients that are suppressed by O(a^2) in the continuum limit. Quantum loops do not modify this behavior in phi^4, nor in QCD if the gauge-fields are smeared over a comparable spatial region. Consequently, the use of this type of operator should, in principle, allow for Lattice QCD calculations of the higher moments of the hadron structure functions.
description: 35 pages, 10 figures; v2: added references and one footnote
A local characterization of combinatorial multihedrality in tilings
Creators: name: Dolbilin, Nikolai
name: Schulte, Egon
Publisher: name: Faculty of Science, University of Calgary
Year: 2009

description: A locally finite face-to-face tiling of euclidean $d$-space by convex polytopes is called {\em combinatorially multihedral\/} if its combinatorial automorphism group has only finitely many orbits on the tiles. The paper describes a local characterization of combinatorially multihedral tilings in terms of centered coronas. This generalizes the Local Theorem for Monotypic Tilings, established in \cite{dolsch}, which characterizes the case of combinatorial tile-transitivity.
description: Contributions to Discrete Mathematics, Vol 4, No 1 (2009)
ТРАДИЦИИ И СОВРЕМЕННОСТЬ В БЫТОВАНИИ ЭПОСА “МАНАС”
Creators: name: Субакожоева Чолпон Темирбековна
Publisher: name: Вестник Тувинского государственного университета. Социальные и гуманитарные науки
Year: 2020
Subjects: фольклор; кыргызский героический эпос «Манас»; сказительское искусство; сказительские традиции; современность в бытовании эпоса

description: Кыргызский героический эпос Манас» более тысячи лет существовал в традиционной устной форме и сохранил свое живое бытование со всеми особенностями архаического сказа. Эта сказительская традиция бытования эпоса сохранила свои позиции в духовной жизни народа до начала ХХ века в Кыргызстане и в районах компактного проживания киргизов. Однако глобальные исторические, социальные преобразования, происшедшие в ХХ веке, значительно повлияли на бытование эпоса: переход с кочевого образа жизни на оседлый, создание кыргызской письменности, положившей начало развитию национальной профессиональной художественной литературы, развитие кыргызского книгоиздания, запись и появление печатных текстов эпоса вызвали сокращение, а в начале ХХ1 века и упадок живой сказительской школы. В статье рассмотрены особенности современного бытования эпоса и причины, их вызвавшие.
ОЦЕНКА ТЕХНИКО-ЭКОНОМИЧЕСКОГО ЭФФЕКТА ОТ ВНЕДРЕНИЯ КОРРЕКТИРОВАНИЯ ТЕХНИЧЕСКОГО ОБСЛУЖИВАНИЯ И РЕМОНТА НАЗЕМНЫХ ТРАНСПОРТНО-ТЕХНОЛОГИЧЕСКИХ МАШИН
Creators: name: Кайзер Юрий Филиппович
name: Монгуш Сылдыс Чамбааевич
Publisher: name: Вестник Тувинского государственного университета. Технические и физико-математические науки
Year: 2020
Subjects: транспортно-технологические машины; эксплуатация; техническое обслуживание; предприятие; эффективность; производительность; затраты

description: В данной статье описаны основные правила организации проведения механизированных работ с использованием наземных транспортно-технологических машин, а также показаны документы, содержащие данные по эксплуатации машин. Предложения по оптимизации периодичности технического обслуживания и ремонта дают возможность более упорядоченно подходить к срокам постановки машины на техническое обслуживание, рассматривая целесообразность вывода машины из эксплуатации с экономической точки зрения. Применение этих предложений возможно для любых разновидностей машин, при всех формах технического обслуживания и ремонта. При рыночной экономике расчет эффективности наземных транспортно-технологических машин осуществляется на основе себестоимости единицы продукта, учитываемой при нахождении прибыли от выполнения работы. Проведена оценка технико-экономического эффекта результатов проведѐнных исследований по корректировке периодичности технического обслуживания и ремонта. Одним из важнейших направлений оптимизации деятельности ремонтных служб является минимизация, вплоть до полного исключения, лишних затрат на проведение технического обслуживания и ремонта. В качестве основного критерия оценки эффективности функционирования ремонтных служб предложено рассмотреть величину, представляющую собой сумму затрат на ремонт и производственные потери. Разработана математическая модель деятельности ремонтной службы по обеспечению работоспособности наземных транспортно-технологических машин строительного предприятия, основанная на использовании метода Монте-Карло.
HPLC analysis, optimization of extraction and purification conditions, biological evaluation of total protoflavones from Macrothelypteris viridifrons
Creators: name: Wei, An-Hua
name: Zhou, Dao-Nian
name: Gu, Zhi-Chun
name: Liu, Dong
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified

description: The present study aims to evaluate phytochemical and pharmacological potential of total protoflavones from Macrothelypteris viridifrons. In the phytochemical study, an HPLC analysis method was established, and the optimal extraction and purification conditions were analyzed. The extractive condition was optimized as follows: the backflow extraction with 20 folds of 70% ethanol at 80◦C for 1 h twice. Moreover, by combining the alkali-extraction and acid-precipitation method with the macroporous resin purification technology, the final purity rate of total protoflavones was no less than 54.85%. In the pharmacological study, the total protoflavones from M. viridifrons showed a significant tumor-inhibitory effect in the H22 hepatoma cells transplantation model with a higher inhibitory rate of 55.76% in high dosage (100mg/kg) treatment group compared with the positive control group (20 mg/kg cyclophosphamide). Taken of all, these results support that protoflavones are the material basis of M. viridifrons as an anticancer folk medicine.
Geometric realizations of special toroidal complexes
Creators: name: Grünbaum, Branko
name: Szilassi, Lajos
Publisher: name: Faculty of Science, University of Calgary
Year: 2009

description: If all faces of a toroidal polyhedron are  k-gons, what are the possible numbers  n  of faces?  It follows from the Euler characteristic that for such polyhedra  k  is one of  3, 4, 5, 6.  The paper provides an almost complete answer in all these cases, altough several specific questions remain.  Some of the polyhedra found show that the constructions are rather complicated in some instances; this may provide an incentive for searching simpler realizations.
description: Contributions to Discrete Mathematics, Vol 4, No 1 (2009)
The role of phytoplankton and environmental variables in Pacific oyster (Crassostrea gigas) aquaculture in British Columbia
Creators: name: Cassis, David
Publisher: name: University of British Columbia
Year: 2012

description: Pacific oyster aquaculture in British Columbia faces serious challenges, such as high cadmium (Cd) concentrations, low growth and high mortalities during summer, and inability to directly gauge stress levels. The goal of this dissertation was to address these challenges by investigating the role of biological, physical and chemical oceanographic parameters in controlling them in various oyster farms in the Strait of Georgia. Three studies were undertaken. The first, from August 2004 to July 2005, investigated the role of phytoplankton in controlling Cd levels in the oysters in a Deep Bay farm. Phytoplankton mediated the transfer of dissolved Cd to the particulate phase, accounting for 90% of the summer reduction in dissolved Cd. This suggests that phytoplankton act as a sink for dissolved Cd, reducing the main source to the oysters. Two descriptive models for annual oyster Cd concentrations were developed based on environmental variables. The second study, from June to October of 2008, investigated how environmental factors, culture depth and seed size controlled oyster mortality and growth in four farms. Farms with less stratified, colder waters rich in diatoms fared better than those with highly stratified, higher temperature waters and persistent blooms of flagellates. Larger oyster seed presented low mortalities, while smaller seed were more susceptible to adverse conditions due to their ineffective particle processing capabilities. The best yield was obtained at a culture depth of 3 m, despite higher mortalities. A depth manipulation technique was investigated as a means to reduce summer mortalities without success. The third study, during the summer and fall of 2007 in Deep Bay, investigated a novel proteomic technique to detect and quantify heat-shock proteins (HSP) 70 and 90 in oysters to assess their stress levels. Mortalities were relatively low during that year (8.5% accumulated). The abundance of HSP 70 sequences was positively directly with non-harmful diatom biomass and negatively with high temperature and reproductive state. In contrast, the levels of HSP 90 were correlated negatively to the biomass of non-harmful diatoms, and positively to that of potentially-harmful algae, indicating that HSP 70s and 90s may have different triggers.
ГОРНО-ГЕОМЕТРИЧЕСКИЙ АНАЛИЗ КАРЬЕРНОГО ПОЛЯ ТАРДАНСКОГО ЗОЛОТОРУДНОГО МЕСТОРОЖДЕНИЯ ОБОСНОВАНИЕ ПОРЯДКА ОТРАБОТКИ РУДНЫХ ЗОН
Creators: name: Ондар Эртине-Даш Васильевич
Publisher: name: Вестник Тувинского государственного университета. Технические и физико-математические науки
Year: 2020
Subjects: золоторудное месторождение; карьер; горно-геометрический анализ; рудные тела; рудная зона; разрез по профилю; полезное ископаемое; объем вскрыши; графики зависимости; золото

description: В данной статье предлагается оптимальный порядок отработки рудных зон на Тарданском золоторудном месторождении, основанный на результатах горно-геометрического анализа карьерного поля на вышеупомянутом участке. Для решения проблемы представлена методика, предполагающая выполнение горно-геометрического анализа характерных разрезов для каждой рудной зоны для установления объемов вскрыши в зависимости от извлекаемого полезного ископаемого. Методика включает также построение графика изменения объемов вскрыши и полезного ископаемого от извлекаемого количества золота. Такой анализ позволяет делать выводы о целесообразности установления порядка в процессе отработки карьеров. Предлагается начинать отработку тех участков, которые имеют минимальные по сравнению с другими коэффициенты вскрыши.
Fine-tuning the ISO/IEC Standard Lightmac
Creators: name: Chattopadhyay, Soumya
name: Jha, Ashwin
name: Nandi, Mridul
Publisher: name: CISPA
Year: 2023

description: LightMAC, by Luykx et al., is a block cipher based message authentication code (MAC). The simplicity of design and low overhead allows it to have very compact implementations. As a result, it has been recently chosen as an ISO/IEC standard MAC for lightweight applications. LightMAC has been shown to achieve query-length independent security bound of O(q^2/2^n) when instantiated with two independently keyed n-bit block ciphers, where q denotes the number of MAC queries and the query-length is upper bounded by (n-s)2^s bits for a fixed counter size s. In this paper, we aim to minimize the number of block cipher keys in LightMAC. First, we show that the original LightMAC instantiated with a single block cipher key, referred as 1k-LightMAC, achieves security bound of O(q^2/2^n) while the query-length is at least (n-s) bits and at most min{(n-s)2^{n/4},(n-s)2^s} bits. Second, we show that a minor variant of 1k-LightMAC, dubbed as LightMAC-ds, achieves security bound of O(q^2/2^n) while query-length is upper bounded by (n-s)2^{s-1} bits. Of independent interest, our security proof of 1k-LightMAC employs a novel sampling approach, called the reset-sampling, as a subroutine within the H-coefficient proof setup.
Twisted Conjugacy Classes in Lattices in Semisimple Lie Groups
Creators: name: Mubeena, T.
name: Sankaran, P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Group Theory (math.GR)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: Given a group automorphism $ϕ:Γ\to Γ$, one has an action of $Γ$ on itself by $ϕ$-twisted conjugacy, namely, $g.x=gxϕ(g^{-1})$. The orbits of this action are called $ϕ$-conjugacy classes. One says that $Γ$ has the $R_\infty$-property if there are infinitely many $ϕ$-conjugacy classes for every automorphism $ϕ$ of $Γ$. In this paper we show that any irreducible lattice in a connected semi simple Lie group having finite centre and rank at least 2 has the $R_\infty$-property.
description: 6 pages
ОБСЛЕДОВАНИЕ ТЕХНИЧЕСКОГО СОСТОЯНИЯ ФУНДАМЕНТОВ ЧАСТНЫХ ДОМОВ
Creators: name: Саая Буян Оюн-Оолович
Publisher: name: Вестник Тувинского государственного университета. Технические и физико-математические науки
Year: 2020
Subjects: обследование технического состояния; фундамент; отмостка; гидроизоляция; трещина; основание фундамента

description: В работе приведены результаты обследования фундаментов частных домов г. Кызыла сотрудниками научно-производственного центра «Силикат» при Тувинском государственном университете. Описаны основные последствия, возникающие при допущении ошибок во время строительства фундамента, а также механизм разрушения материала фундамента. При выполнении обследования технического состояния фундамента применяются визуальное и инструментальное обследования методом неразрушающего контроля, так как конструкция находится под эксплуатацией. Владельцы частных домов ведут строительство домов без проектной документации, где должны быть указаны необходимые виды работ по защите материалов фундамента – гидрои теплоизоляции. Из-за незнания норм и правил, владельцы частных домов не выполняют данные виды работ, которые во время эксплуатации могут привести к разрушению конструкции и уменьшают срок службы. При составлении акта обследования (технического отчета) сотрудники научно-производственного центра «Силикат» приводят рекомендации по устранению выявленных недостатков.
Acquisitions: evidence of behavioral decision making from the North American oil and gas industry
Creators: name: Rostami, Mahdi
Publisher: name: Haskayne School of Business
Year: 2006

description: Bibliography: p. 118-135
description: This dissertation aims to empirically investigate the behavioral determinants of corporate acquisitions in the North American upstream oil and gas acquiring companies. The core question underlying the study is: Do key concepts within the behavioral theory of the firm predict corporate acquisitions? This dissertation consists of three inter-related studies. The first study examined the impact of the survival and aspiration reference points on corporate acquisitions from the shifting focus perspective. The results showed that organizational acquisition strategy can be explained by organizational antecedents such as performance feedback and organizational slack. Underperforming companies decreased acquisitions as they approached the survival level, while medium and high performing organizations decreased acquisitions when their performance increased. The second study tested the effects of the interactions between organizational performance and slack on firm acquisition strategy. Overall, I found firm relative performance to the survival level is a strong predictor of organizational acquisition strategy. While lower performing companies increased acquisitions as their performance improved, higher performing companies with high slack resources decreased acquisition strategy as their performance increased. The findings clarified the high performance- high slack paradox. The results showed that companies with high performance and high slack resources decreased their acquisitions. Moreover, the results indicate that organizations with higher potential slack and prior acquisition experience are less likely to choose the acquisition strategy. Finally, the third study examined why and how managers decide between related and unrelated acquisitions. Specifically, I focused on the time horizon of firm performance and showed that long- term performance might better explain a firm's acquisition strategy. Overall, there was a positive relationship between poor long-term performance and future related acquisition. The results showed that, due to the risky nature of acquisition strategy, managers in long-term high performing companies are less likely to choose acquisition because this strategy may negatively affect firm performance. The results also showed that while potential slack positively impacted related acquisition, recoverable slack negatively affected acquisition. Firm's acquisition experience is also an important predictor of related acquisition.
Noncommutative complex Grosse-Wulkenhaar model
Creators: name: Hounkonnou, Mahouton Norbert
name: Samary, Dine Ousmane
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: This paper stands for an application of the noncommutative (NC) Noether theorem, given in our previous work [AIP Proc 956 (2007) 55-60], for the NC complex Grosse-Wulkenhaar model. It provides with an extension of a recent work [Physics Letters B 653 (2007) 343-345]. The local conservation of energy-momentum tensors (EMTs) is recovered using improvement procedures based on Moyal algebraic techniques. Broken dilatation symmetry is discussed. NC gauge currents are also explicitly computed.
description: 8 pages
МАТЕМАТИЧЕСКИЕ МЕТОДЫ ОПТИМИЗАЦИИ АВТОНОМНЫХ СИСТЕМ ЭЛЕКТРОСНАБЖЕНИЯ НА ОСНОВЕ СОЛНЕЧНО-ДИЗЕЛЬНЫХ УСТАНОВОК
Creators: name: Сарыг-Оол Сайлык Маар-Ооловна
name: Кенден Кара-Кыс Вадимовна
Publisher: name: Вестник Тувинского государственного университета. Технические и физико-математические науки
Year: 2020
Subjects: автономные системы электроснабжения; возобновляемые источники электроснабжения; моделирование; оптимизация

description: Для решения оптимизационных задач в настоящее время разработано большое количество математических методов и программ моделирования в области возобновляемых источников энергии. В работе рассмотрены особенности наиболее часто применяемых методов оптимизации автономных систем электроснабжения с использованием возобновляемых источников энергии. Для моделирования рассмотренных методов представлены характерные особенности наиболее известных оптимизационных программам моделирования. В зависимости от возможности нахождения целевой функции представлены наиболее используемые математические методы оптимизации автономных систем электроснабжения с использованием возобновляемых источников энергии.
{-1,2}-hypomorphy and hereditary hypomorphy coincide for posets
Creators: name: Boudabbous, Youssef
name: Si Kaddour, Hamza
Publisher: name: Faculty of Science, University of Calgary
Year: 2009

description: Let P and P' be two finite posets on  the same vertex set V.

 The posets P and P'  are hereditarily hypomorphic if for

every subset X of V, the induced subposets P(X) and P'(X)

are isomorphic. The posets P and P' are  {-1,2}-hypomorphic if for

 every subset X of V, |X| in {2,|V|-1}, the subposets P(X) and P'(X) are isomorphic. P. Ille and J.X. Rampon  showed that if two posets  P and P',

 with at least 4 vertices, are {-1,2}-hypomorphic, then P and P'  are isomorphic. Under the same hypothesis, we prove that P and P'  are hereditarily hypomorphic. Moreover, we characterize the pairs of hereditarily hypomorphic posets.
description: Contributions to Discrete Mathematics, Vol 4, No 1 (2009)
Deformed triangular lattice antiferromagnets in a magnetic field: role of spatial anisotropy and Dzyaloshinskii-Moriya interactions
Creators: name: Griset, Christian
name: Head, Shane
name: Alicea, Jason
name: Starykh, Oleg A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Recent experiments on the anisotropic spin-1/2 triangular antiferromagnet Cs_2CuBr_4 have revealed a remarkably rich phase diagram in applied magnetic fields, consisting of an unexpectedly large number of ordered phases. Motivated by this finding, we study the role of spatial anisotropy, Dzyaloshinskii-Moriya interactions, and quantum fluctuations on the magnetization process of a triangular antiferromagnet, coming from the semiclassical limit. The richness of the problem stems from two key facts: 1) the classical isotropic model exhibits a large accidental ground state degeneracy, and 2) these three ingredients compete with one another and split this degeneracy in opposing ways. Using a variety of complementary approaches, including extensive Monte Carlo numerics, spin-wave theory, and an analysis of Bose-Einstein condensation of magnons at high fields, we find that their interplay gives rise to a complex phase diagram consisting of numerous incommensurate and commensurate phases. Our results shed light on the observed phase diagram for Cs_2CuBr_4 and suggest a number of future theoretical and experimental directions that will be useful for obtaining a complete understanding of this material's interesting phenomenology.
description: 22 pages, 16 figures; Submission errors corrected
Diasporic Narratives and the Discourse of the Other in Marina Lewycka’s Novels
Creators: name: Krochak Sulkin, Olga Eliya
Publisher: name: Arts
Year: 2018
Subjects: subject: Diaspora
subject: Emmanuel Levinas
subject: Jacques Derrida
subject: Ethics
subject: Social Justice
subject: Responsibility
subject: The Other
subject: Hospitality
subject: Education--Language and Literature
subject: Education--Sociology of
subject: Literature--Modern
subject: Literature--English
subject: Literature--Slavic and East European
subject: Philosophy
subject: FOS: Philosophy, ethics and religion
subject: Ethnic and Racial Studies
subject: Sociology--Theory and Methods

description: This thesis examines Marina Lewycka’s earlier novels to show how they represent the intrinsic discourse of the other evident in diasporic groups of East European communities in the UK. It also looks at how Lewycka’s narratives engage and challenge the view of diaspora groups as unified and homogenous entities. As the field of diaspora studies continuously becomes more inclusive, it still overlooks the importance of the inner connections extant within diaspora groups and reduces the linkage of the diasporans to national solidarity and ethnicity. This thesis questions those relationships and proposes a Levinasian reading that demonstrates how, in Lewycka’s novels, groups are formed based on the ethical responsibility of the self to the other. I prove my thesis by researching the novels as follows: firstly analyzing the diasporic representation of alterity and migration, secondly by looking at the possibility of hospitality and responsibility to the newly arrived migrant, and finally I examine how guests and hosts engage with the concept of justice in its cultural and universal understandings in a liminal space. One of the conclusions of this thesis is that an ethical reading of diasporic narratives is not only possible but also needed.
Explanation Beats Context: The Effect of Timing and Rationales on Users' Runtime Permission Decisions
Creators: name: Elbitar, Yusra
name: Michael.Schilling
name: Nguyen, Trung Tin
name: Backes, Michael
name: Bugiel, Sven
Publisher: name: CISPA
Year: 2023

description: Current mobile platforms leave it up to the app developer to decide when to request permissions (timing) and whether to provide explanations why and how users' private data are accessed (rationales). Given these liberties, it is important to understand how developers should use timing and rationales to effectively assist users in their permission decisions. While guidelines and recommendations for developers exist, no study has systematically investigated the actual influence of timing, rationales, and their combinations on users' decision-making process. In this work, we conducted a comparative online study with 473 participants who were asked to interact with mockup apps drawn from a pool of 120 variations of 30 apps. The study design was guided by developers' current permission request practices derived from a dynamic analysis of the top apps on Google Play. Our results show that there is a clear interplay between timing and rationales on users' permission decisions and the evaluation of their decisions, making the effect of rationales stronger when shown upfront and limiting the effect of timing when rationales are present. We therefore suggest adaptation to the available guidelines. We also find that permission decisions depend on the individuality of users, indicating that there is no one-fits-all permission request strategy, upon we suggest better individual support and outline one possible solution.
title: Das österreichische Religionsrecht vor Gericht
title: Anmerkungen zum Urteil des EuGH in der Rechtssache C-372/21 vom 2. Februar 2023
titleType: Subtitle
Creators: name: Kowatsch, Andreas
Year: 2023
Subjects: Religionsrecht
Religious law
SOZIALWISSENSCHAFTEN -- Rechtswissenschaften -- Rechtswissenschaften -- Religionsrecht
SOCIAL SCIENCES -- Law -- Law -- Religious law
Europarecht
Privatschulen
Anerkennung von Religionsgemeinschaften
Art. 17 AEUV
EuGH

description: Kommentar des Urteils EuGH C-372/21
ПРОБЛЕМЫ ЗАПУСКА ХОЛОДНОГО ДИЗЕЛЬНОГО ДВИГАТЕЛЯ
Creators: name: Тюлюш Белек Мергенович
name: Балзанай Сылдыс Васильевич
Publisher: name: Вестник Тувинского государственного университета. Технические и физико-математические науки
Year: 2020
Subjects: дизельный двигатель; холодный пуск; свечи накаливания; предпусковой подогреватель; электрофакельный подогреватель воздуха

description: Проблема запуска дизельного двигателя внутреннего сгорания (ДВС) транспортно-технологических машин для Республики Тыва является особенно актуальной. В данной статье производится обзор устройств, облегчающих пуск холодного дизельного двигателя при низких температурах окружающего воздуха. На эффективность запуска двигателя при низких температурах влияет ряд факторов. К примеру, низкая температура влияет на состояние аккумуляторной батареи (АКБ), вследствие чего ухудшаются характеристики электропусковой системы (стартер). Или, например, резкое возрастание момента сопротивления вращению коленчатого вала двигателя при пуске из-за повышения вязкости масла при понижении температуры воздуха. А так как дизельный двигатель имеет высокую степень сжатия, то оказываемое сопротивление проворачиванию коленчатого вала пусковыми устройствами сопровождает возрастание нагрузки на стартер при холодном пуске в условиях загустевшей смазки. Также возможно сухое трение между соприкасающимися деталями, так как загустевшее масло долгое время не подается по подводящим каналам. Это все результат низкой температуры окружающей среды. Количество устройств и способов для облегчения пуска дизельного двигателя обширно и поэтому выбрать то или иное устройство в каждом случае определяется условиями эксплуатации, экономическими факторами и конструктивными особенностями самого двигателя.
Classifying real Lehmer triples: a revived computation
Creators: name: Juricevic, Robert
Publisher: name: Faculty of Science, University of Calgary
Year: 2009

description: In this article we build on the work of Schinzel \cite{schinzelI}, and prove that if $n>4$, $n\neq 6$, $n/(\eta \kappa)$ is an odd integer, and the triple $(n,\alpha,\beta)$, in case $(\alpha-\beta)^2>0$, is not equivalent to a triple $(n,\alpha,\beta)$ from an explicit table, then the $n$th Lehmer number $u_n(\alpha, \beta)$ has at least two primitive divisors.
description: Contributions to Discrete Mathematics, Vol 4, No 1 (2009)
Controversial Credits: Secondary Students’ Education on Heteronormativity
Creators: name: Surette, Tanya Elaine
Publisher: name: Graduate Studies
Year: 2018
Subjects: subject: Education
subject: Education--Curriculum and Instruction
subject: Gender Studies

description: In January of 2016, the Alberta Government launched new Guidelines for Best Practices: Creating Learning Environments That Respect Diverse Sexual Orientations, Gender Identities, and Gender Expressions (Alberta Education, 2016). This document was in response to the growing awareness of the ongoing oppression, marginalization, and discrimination affecting gender and sexually diverse children, youth, families, and faculty in schools across the province. These guidelines were met with a series of reactions, with much backlash and controversy erupting in Southern Alberta, which exemplified the ongoing homophobic and transphobic sentiments commonplace to many of the residents in this area. This study explores the experiences of secondary students in public secular schools related to the topic of gender and sexual diversity and the impact of the heteronormative discourse operating within their schools and community on their developing attitudes, identities, and emotional and mental well-being. I employed a multi-method qualitative research framework involving 1) critical discourse analysis of the documents from three courses where topics pertaining to gender and sexuality are most likely to occur; and 2) multiple in-depth semi-structured interviews with 6 secondary students. The central questions driving this study were: Are high school students’ perceptions of heteronormativity shaped by religious and secular aspects of the high school curriculum? If so, how? What practical insights can be applied to school policies and practices to inform more safe and inclusive school environments? To answer these questions, I drew upon critical theory and social justice scholars to explore how the forces of heteronormativity and privilege, particularly Christian privilege, are produced and reproduced in schools and how these forces maintain an ongoing oppressive and hostile school environment for gender and sexual minority students. The chief finding of this study is that, despite the efforts made through the recent release of the Guidelines for Best Practice (Alberta Education, 2016), gender and sexual minority youth are not experiencing a safe and inclusive school environment, with ongoing oppression experienced in multiple school spaces. This dissertation concludes with a discussion of participant-infused insights and wisdom for educators and educational leaders interested in creating more safe and inclusive learning environments.
Weakly partitive families on infinite sets
Creators: name: Ille, Pierre
name: Woodrow, Robert
Publisher: name: Faculty of Science, University of Calgary
Year: 2009

description: Given a finite or infinite set $S$ and a positive integer $k$, a 

{\em binary structure} $B$ of base $S$ and of rank $k$ is a function 

$(S\times S)\setminus\{(x,x);~x\in S\}\longrightarrow\{0,\ldots,k-1\}$. 

A subset $X$ of $S$ is an interval of $B$ if for $a,b\in X$ and $x\in S\setminus X$, $B(a,x)=B(b,x)$ and $B(x,a)=B(x,b)$. 

The family of intervals of $B$ satisfies the following: 

$\emptyset$, $\underline{B}$ and $\{x\}$, where 

$x\in \underline{B}$, are intervals of $B$; 

for every family $\mathcal{F}$ of intervals of $B$, the intersection  of all the elements of $\mathcal{F}$ is an interval of $B$; given intervals $X$ and $Y$ of $B$, if $X\cap Y\neq\emptyset$, then $X\cup Y$ is an interval of $B$; 

given intervals $X$ and $Y$ of $B$, if $X\setminus Y\neq\emptyset$, then $Y\setminus X$ is an interval of $B$; 

for every up-directed family $\mathcal{F}$ of intervals of $B$, the union of all the elements of $\mathcal{F}$ is an interval of $B$. 

Given a set $S$, a family of subsets of $S$ is weakly partitive if it satisfies the properties above. 

After suitably characterizing the elements of a weakly partitive family, we propose a new approach to establish the following \cite{I91}: Given a weakly partitive family $\mathcal{I}$ on a set $S$, there is a binary structure of base $S$ and of rank $\leq 3$ whose intervals are exactly the elements of $\mathcal{I}$.
description: Contributions to Discrete Mathematics, Vol 4, No 1 (2009)