cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Free quantum analogue of Coxeter group $D_4$
Creators: name: Gromada, Daniel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Algebra (math.QA)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 20G42 (Primary), 05C25, 18D10 (Secondary)

description: We define the quantum group $D_4^+$ -- a free quantum version of the demihyperoctahedral group $D_4$ (the smallest representative of the Coxeter series $D$). In order to do so, we construct a free analogue of the property that a $4\times4$ matrix has determinant one. Such analogues of determinants are usually very hard to define for free quantum groups in general and our result only holds for the matrix size $N=4$. The free $D_4^+$ is then defined by imposing this generalized determinant condition on the free hyperoctahedral group $H_4^+$. Moreover, we give a detailed combinatorial description of the representation category of $D_4^+$.
description: 34 pages
title: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° ÑÑÑÐ°ÑÐµÐ³Ð¸Ð¸ Ð²ÑÑ Ð¾Ð´Ð° Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸Ñ Ð½Ð° Ð¼ÐµÐ¶Ð´ÑÐ½Ð°ÑÐ¾Ð´Ð½ÑÐ¹ ÑÑÐ½Ð¾Ðº
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Development of the strategy fot enterance to the international market
Creators: name: ÐÑÐ·Ð½ÐµÑÐ¾Ð², ÐÐ°Ð²ÐµÐ»
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2020
Subjects: ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° ÑÑÑÐ°ÑÐµÐ³Ð¸Ð¸
Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð´ÑÑÐ²ÐµÐ½Ð½ÑÐµ Ð¼Ð¾ÑÐ½Ð¾ÑÑÐ¸
Ð°Ð½Ð°Ð»Ð¸Ð·
Ð¼ÐµÐ¶Ð´ÑÐ½Ð°ÑÐ¾Ð´Ð½Ð°Ñ ÑÐ¾ÑÐ³Ð¾Ð²Ð»Ñ
Ð¿Ð¾Ð»Ð¸ÑÑÐµÑÐ°Ð½Ð¾Ð²Ð°Ñ Ð¿Ð»ÑÐ½ÐºÐ°
development of the strategy
production capacity
analysis
international trade
polyurethane film

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¾Ð¿Ð¸ÑÐ°Ð½ Ð¿ÑÐ¾ÑÐµÑÑ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ¸ ÑÑÑÐ°ÑÐµÐ³Ð¸Ð¸ Ð²ÑÑÐ¾Ð´Ð° ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ð¸ Ð½Ð° Ð¼ÐµÐ¶Ð´ÑÐ½Ð°ÑÐ¾Ð´Ð½ÑÐ¹ ÑÑÐ½Ð¾Ðº Ð½Ð° Ð¿ÑÐ¸Ð¼ÐµÑÐµ ÐÐÐ "ÐÐ¸Ð½Ðº". ÐÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ñ Ð¾Ð±ÑÐ¸Ðµ Ð¿Ð¾Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ð¸, ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð° ÐµÑ Ð´ÐµÐ¹ÑÑÐ²ÑÑÑÐ°Ñ ÑÑÑÐ°ÑÐµÐ³Ð¸Ñ, ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ñ ÑÐµÐºÐ¾Ð¼ÐµÐ½Ð´Ð°ÑÐ¸Ð¸ Ð¿Ð¾ ÑÐ¾Ð²ÐµÑÑÐµÐ½ÑÑÐ²Ð¾Ð²Ð°Ð½Ð¸Ñ Ð´ÐµÐ¹ÑÑÐ²ÑÑÑÐµÐ¹ ÑÑÑÐ°ÑÐµÐ³Ð¸Ð¸ ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ð¸ Ð¸ Ð´Ð°Ð½Ð° Ð¾ÑÐµÐ½ÐºÐ° ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð½ÑÑ Ð°Ð²ÑÐ¾ÑÐ¾Ð¼ ÑÐµÐºÐ¾Ð¼ÐµÐ½Ð´Ð°ÑÐ¸Ð¹ Ð¿Ð¾ ÑÐ¾Ð²ÐµÑÑÐµÐ½ÑÑÐ²Ð¾Ð²Ð°Ð½Ð¸Ñ Ð¸Ð¼ÐµÑÑÐµÐ¹ÑÑ ÑÑÑÐ°ÑÐµÐ³Ð¸Ð¸.
description: This document describes process of development the strategy for enterance to the international market using LLC "Vink" as example. The general provisions of company were identified, it's current strategy was developed, the recomendations for improving current strategy of the company were developed and the efficiency of the recommendations to improve current strategy was evaluated.
Normal singularities with torus actions
Creators: name: Liendo, Alvaro
name: Süß, Hendrik
Publisher: name: arXiv
Year: 2010
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14L30, 14B05, 14M25

description: We propose a method to compute a desingularization of a normal affine variety X endowed with a torus action in terms of a combinatorial description of such a variety due to Altmann and Hausen. This desingularization allows us to study the structure of the singularities of X. In particular, we give criteria for X to have only rational, (QQ-)factorial, or (QQ-)Gorenstein singularities. We also give partial criteria for X to be Cohen-Macaulay or log-terminal. Finally, we provide a method to construct factorial affine varieties with a torus action. This leads to a full classification of such varieties in the case where the action is of complexity one.
description: 23 pages
title: Антенная система автомобильного радара КВЧ диапазона с использованием круговой поляризации
Creators: name: Кутузов, Владимир
name: Времьёв, Владимир
name: Комаров, Глеб
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2020

description: Современные автомобили становятся носителями все большего числа разнообразных излучающих датчиков и устройств. Развитие автомобильных радаров предопределяет переход во все более коротковолновые диапазоны. Такие радары прошли путь от опытных образцов до серийных радаров миллиметрового диапазона. Современные коммерческие решения работают в миллиметровом диапазоне (76-77 ГГц) и дальнейшее их развитие лежит в плоскости перехода в еще более коротковолновый диапазон. Одновременно становится все более важной задача защита данных радаров от излучения аналогичных приборов, так как с ростом числа автомобилей, оснащенных такими устройствами, эта проблема становится всё более острой. Одним из путей ее решения является введение поляризационной развязки, которая позволяет существенно снизить уровень помех от встречного транспорта. В статье представлены результаты моделирования основных составных частей радиочастотного тракта миллиметрового радара. Показаны высокое качество согласования и хорошие поляризационные характеристики.
The impact of maternal depression and prenatal antidepressant exposure on child development : consideration of internal and external contextual factors
Creators: name: Park, Mina
Publisher: name: University of British Columbia
Year: 2019

description: One in five women experience a depressive episode during pregnancy, with up to one in ten being treated with antidepressants. Despite an overall adverse developmental effect related to exposure to maternal depression and antidepressants during pregnancy, not all children are equally affected. Moreover, critical yet unanswered questions remain regarding the potential developmental risks and benefits of antidepressant treatment during pregnancy. The purpose of this thesis was to study the association between maternal depression and prenatal antidepressant exposure and child developmental outcomes while considering the role of key contextual factors that may influence these associations. Depression severity, patterns of depressive symptoms over time, and underlying genetic risk were investigated for their role in influencing child outcomes. Small yet consistent associations were found between prenatal antidepressant exposure and vulnerability for anxiety and lower physical independence at kindergarten age, after stringently adjusting for confounding by maternal mental health. Genetic differences were found to underlay associations between prenatal maternal depression symptom levels and genome-wide differences in DNA methylation at age 18 years. Looking longitudinally, increasing maternal depression symptoms across the first three postpartum years were associated with worse child behavioral problems and executive functions at ages three and six years; a pattern of decreasing maternal depression symptoms over the same time period, despite initially higher depressive symptoms during pregnancy, was associated with no impairments. Collectively, the findings presented herein help explain the heterogeneity of child outcomes that are observed in relation to early developmental exposure to maternal depression and its treatment with antidepressants. This thesis highlights the impact of factors underlying and related to maternal mental health on children’s developmental outcomes, and suggest that investments made to improve maternal depression have the potential to benefit the health of both mothers and their children.
Toolkit for discussion (Technology, Resources and Learning: Productive Classroom Practices and Effective Teacher Professional Development)
Creators: name: Haßler, B
Publisher: name: Zenodo
Year: 2019

description: Toolkit for discussion (Technology, Resources and Learning: Productive Classroom Practices and Effective Teacher Professional Development)

The document is an extract from:

Haßler, B., Major, L., Warwick, P., Watson, S., Hennessy, S., & Nichol, B. (2016). Perspectives on Technology, Resources and Learning - Productive Classroom Practices, Effective Teacher Professional Development. DOI: 10.5281/zenodo.2626440. Retrieved from http://bjohas.de/Publications/Perspectives. Licence: Creative Commons Attribution 4.0 International.

The document is available as PDF, docx and odt.
description: Removed line with incorrect DOI.
title: Помехоустойчивость разнесенного приема на передаче сигналов с фазовой и относительной фазовой модуляцией в каналах с дискретной многолучевостью
Creators: name: Сидельников, Геннадий
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2020

description: Проведен анализ помехоустойчивости разнесенного приема на передачи для сигналов с фазовой модуляцией и относительной фазовой модуляцией в каналах с дискретной многолучевостью. На основе аппарата векторной алгебры рассматривается изменение сигнальных расстояний при использовании разнесения на передаче в каналах с дискретной многолучевостью. Использование статистического моделирования на ЭВМ позволило получить вероятностные характеристики сигнальных расстояний для фазовой и относительной фазовой модуляции в зависимости от информационных символов, задержек отраженных сигналов, а также их амплитуд и фаз. Учет тонкой структуры многолучевого поля позволил рассчитать вероятность ошибки при предельной амплитуде отраженного луча. В работе показано, что при увеличении числа передающих антенн на передаче величина предельной амплитуды отраженного луча уменьшается. На основе полученной интегральной функции распределения сигнальных расстояний определена эффективность применения относительной фазовой модуляции.
Vine copulas : dependence structure learning, diagnostics, and applications to regression analysis
Creators: name: Chang, Bo
Publisher: name: University of British Columbia
Year: 2019

description: Copulas are widely used in high-dimensional multivariate applications where the assumption of Gaussian distributed variables does not hold. Vine copulas are a flexible family of copulas built from a sequence of bivariate copulas to represent bivariate dependence and bivariate conditional dependence. The vine structures consist of a hierarchy of trees to express conditional dependence. The contributions of this thesis are (a) improved methods for finding parsimonious truncated vine structures when the number of variables is moderate to large; (b) diagnostic methods to help in decisions for bivariate copulas in the vine; (c) applications to predictions based on conditional distributions of the vine copula. The vine structure learning problem has been challenging due to the large search space. Existing methods are based on greedy algorithms and do not in general produce a solution that is near the global optimum. It is an open problem to choose a good truncated vine structure when there are many variables. We propose a novel approach to learning truncated vine structures using Monte Carlo tree search, a method that has been widely adopted in game and planning problems. The proposed method has significantly better performance over the existing methods under various experimental setups. Moreover, diagnostic methods based on measures of dependence and tail asymmetry are proposed to guide the choice of parametric bivariate copula families assigned to the edges of the trees in the vine and to assess whether a copula is constant over the conditioning value(s) for trees 2 and higher. If the diagnostic methods suggest the existence of reflection asymmetry, permutation asymmetry, or asymmetric tail dependence, then three- or four-parameter bivariate copula families might be needed. If the conditional dependence measures or asymmetry measures in trees 2 and up are not constant over the conditioning value(s), then non-constant copulas with parameters varying over conditioning values should be considered. Finally, for data from an observational study, we propose a vine copula regression method that uses regular vines and handles mixed continuous and discrete variables. This method can efficiently compute the conditional distribution of the response variable given the explanatory variables.
title: ÐÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½Ð¾Ðµ Ð¾Ð±ÐµÑÐ¿ÐµÑÐµÐ½Ð¸Ðµ Ð³ÐµÐ¾Ð³ÑÐ°ÑÐ¸ÑÐµÑÐºÐ¸Ñ Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¾Ð½Ð½ÑÑ ÑÐ¸ÑÑÐµÐ¼ (ÐÐÐ¡)
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Software for geographic information systems
Creators: name: ÐÐ°ÑÐµÐµÐ², Ð­Ð¼Ð¸Ð»Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2023
Subjects: Ð½ÐµÐ¹ÑÐ¾Ð½Ð½ÑÐµ ÑÐµÑÐ¸
Ð±Ð°Ð·Ð° Ð´Ð°Ð½Ð½ÑÑ
Ð³ÐµÐ¾Ð´Ð°Ð½Ð½ÑÐµ
Dataset
ÑÐ¸Ð½Ð³ÑÐ»ÑÑÐ½ÑÐ¹ ÑÐ¿ÐµÐºÑÑ
neural networks
Database
Geodata
singular spectrum

description: Ð¢ÐµÐ¼Ð° ÑÐ°Ð±Ð¾ÑÑ: Â«ÐÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½Ð¾Ðµ Ð¾Ð±ÐµÑÐ¿ÐµÑÐµÐ½Ð¸Ðµ Ð³ÐµÐ¾Ð³ÑÐ°ÑÐ¸ÑÐµÑÐºÐ¸Ñ Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸Ð¾Ð½Ð½ÑÑ ÑÐ¸ÑÑÐµÐ¼Â». Ð¦ÐµÐ»Ñ ÑÐ°Ð±Ð¾ÑÑ â ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½Ð¾Ð³Ð¾ Ð¾Ð±ÐµÑÐ¿ÐµÑÐµÐ½Ð¸Ñ, Ð¿Ð¾Ð·Ð²Ð¾Ð»ÑÑÑÐµÐ³Ð¾ ÑÑÐ¾ÑÐ¼ÑÐ»Ð¸ÑÐ¾Ð²Ð°ÑÑ Ð¿ÑÐ¾Ð³Ð½Ð¾Ð· Ð¿Ð¾Ð³Ð¾Ð´Ñ Ð² ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ñ Ð¼Ð°ÑÐµÐ¼Ð°ÑÐ¸ÑÐµÑÐºÐ¸Ñ ÑÑÐ´Ð¾Ð². Ð ÑÐ¾Ð´Ðµ ÑÐ°Ð±Ð¾ÑÑ Ð±ÑÐ»Ð¸ ÑÐµÑÐµÐ½Ñ ÑÐ»ÐµÐ´ÑÑÑÐ¸Ðµ Ð·Ð°Ð´Ð°ÑÐ¸: 1. ÐÑÐ¾Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°ÑÑ Ð¿ÑÐµÐ´Ð¼ÐµÑÐ½ÑÑ Ð¾Ð±Ð»Ð°ÑÑÑ; 2. ÐÑÐ¾Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°ÑÑ Ð°Ð½Ð°Ð»Ð¾Ð³Ð¸; 3. Ð¡ÑÐ¾ÑÐ¼ÑÐ»Ð¸ÑÐ¾Ð²Ð°ÑÑ ÑÐ¿ÐµÑÐ¸ÑÐ¸ÐºÐ°ÑÐ¸Ñ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½Ð¾Ð³Ð¾ Ð¾Ð±ÐµÑÐ¿ÐµÑÐµÐ½Ð¸Ñ; 4. ÐÑÑÑÐµÑÑÐ²Ð¸ÑÑ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½Ð¾Ð³Ð¾ Ð¾Ð±ÐµÑÐ¿ÐµÑÐµÐ½Ð¸Ñ ÑÐ¸ÑÑÐµÐ¼Ñ. 5. Ð ÐµÐ°Ð»Ð¸Ð·Ð¾Ð²Ð°ÑÑ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½Ð¾Ðµ Ð¾Ð±ÐµÑÐ¿ÐµÑÐµÐ½Ð¸Ðµ.
description: Subject of the work: "Software for geographic information systems". The aim of the work is to develop software that allows you to formulate a weather forecast as a result of using mathematical series. In the course of the work the following tasks were solved: 1. Analyze the subject area; 2. Analyze the analogues; 3. Formulate the software specification; 4. Carry out the software design of the system; 5. Implement the software.
Great Britain Ministry of Information - Daily Press Notices and Bulletins (1940-09-17)
Creators: name: Great Britain. Ministry Of Information.
Publisher: name: The University of Texas at Austin
Year: 1940
Subjects: World War, 1939-1945 – Social aspects
World War, 1939-1945 -- History
World War II
Second World War
World War Two
Great Britain

description: From the UK National Archives: http://www.nationalarchives.gov.uk/theartofwar/inf3.htm “Formed on September 4th 1939, the day after Britain’s declaration of war, the Ministry of Information (MOI) was the central government department responsible for publicity and propaganda in the Second World War. The initial functions of the MOI were threefold: news and press censorship; home publicity; and oversees publicity in Allied and neutral countries”. This collection contains Press Notices and Bulletins published by the MOI between 1939-1945. The Press Notices and Bulletins are among many publications and films issued by the agency during the war.
title: Оценка параметров одномерного и двумерного распределения случайных величин
Creators: name: Шерстнева, Алина
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2020

description: Рассматривается задача оценки параметров одномерного и двумерного распределения случайных величин средствами программы математического моделирования. Целью работы является нахождение и оценка этих параметров. Сгенерирована 1000 равномерно и нормально распределенных случайных чисел. Произведен расчет среднего значения, дисперсии и стандартного отклонения этих реализаций тремя различными способами. В статье приведена оценка функции плотности вероятности случайной величины из ряда наблюдений. Построены графики функции плотности вероятности равномерно и нормально распределенных величин с учетом 20, 200 и 1000 попыток. Произведена генерация двумерного нормального распределения. Выполнена оценка математического ожидания и дисперсии с использованием выборочной функции кросс- и ковариационной функции. Рассчитана двумерная функция плотности и показано ее графическое отображение в виде 3D графика.
MeMAD end-to-end speech translation models
Creators: name: Aulamo, Mikko
name: Vázquez, Raúl
Publisher: name: Zenodo
Year: 2020
Subjects: memad, machine translation, opennmt, multimodal

description: A public collection of pre-trained translation, segmentation and truecasing models for the MeMAD end-to-end speech translation system, available via Github.
Great Britain Ministry of Information - Daily Press Notices and Bulletins (1940-09-18)
Creators: name: Great Britain. Ministry Of Information.
Publisher: name: The University of Texas at Austin
Year: 1940
Subjects: World War, 1939-1945 – Social aspects
World War, 1939-1945 -- History
World War II
Second World War
World War Two
Great Britain

description: From the UK National Archives: http://www.nationalarchives.gov.uk/theartofwar/inf3.htm “Formed on September 4th 1939, the day after Britain’s declaration of war, the Ministry of Information (MOI) was the central government department responsible for publicity and propaganda in the Second World War. The initial functions of the MOI were threefold: news and press censorship; home publicity; and oversees publicity in Allied and neutral countries”. This collection contains Press Notices and Bulletins published by the MOI between 1939-1945. The Press Notices and Bulletins are among many publications and films issued by the agency during the war.
Great Britain Ministry of Information - Daily Press Notices and Bulletins (1940-09-01)
Creators: name: Great Britain. Ministry Of Information.
Publisher: name: The University of Texas at Austin
Year: 1940
Subjects: World War, 1939-1945 – Social aspects
World War, 1939-1945 -- History
World War II
Second World War
World War Two
Great Britain

description: From the UK National Archives: http://www.nationalarchives.gov.uk/theartofwar/inf3.htm “Formed on September 4th 1939, the day after Britain’s declaration of war, the Ministry of Information (MOI) was the central government department responsible for publicity and propaganda in the Second World War. The initial functions of the MOI were threefold: news and press censorship; home publicity; and oversees publicity in Allied and neutral countries”. This collection contains Press Notices and Bulletins published by the MOI between 1939-1945. The Press Notices and Bulletins are among many publications and films issued by the agency during the war.
Gravitation on a Homogeneous Domain
Creators: name: Jadczyk, Arkadiusz
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Among all plastic deformations of the gravitational Lorentz vacuum \cite{wr1} a particular role is being played by conformal deformations. These are conveniently described by using the homogeneous space for the conformal group SU(2,2)/S(U(2)x U(2)) and its Shilov boundary - the compactified Minkowski space \tilde{M} [1]. In this paper we review the geometrical structure involved in such a description. In particular we demonstrate that coherent states on the homogeneous Kae}hler domain give rise to Einstein-like plastic conformal deformations when extended to \tilde{M} [2].
description: 10 pages, 1 figure; four misprints in the original version corrected: one lacking closing parenthesis, two letters, and an overall sign in front of the primitive function on p. 3
Additional file 1 of Association between chiropractic care and use of prescription opioids among older medicare beneficiaries with spinal pain: a retrospective observational study
Creators: name: Whedon, James M.
name: Uptmor, Sarah
name: Toler, Andrew W. J.
name: Bezdjian, Serena
name: MacKenzie, Todd A.
name: Kazal, Louis A.
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Additional file 1: APPENDIX A. Risk of Opioid Prescription Fill Among Recipients vs. Non-recipients, by Year. APPENDIX B. Geographic Variation in Risk of Opioid Prescription Fill: Recipients vs. Non-recipients. APPENDIX C. Categorized Diagnosis Codes.
Computing volume fractions and signed distances from triangulated surfaces immersed in unstructured meshes
Creators: name: Tolle, Tobias
name: Gründing, Dirk
name: Bothe, Dieter
name: Marić, Tomislav
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Available algorithms for the initialization of volume fractions typically utilize exact functions to model fluid interfaces, or they rely on computationally costly intersections between volume meshes. Here, a new algorithm is proposed that computes signed distances and volume fractions on unstructured meshes from arbitrarily shaped surfaces, e.g. originating from experimental data. The proposed algorithm calculates signed distances geometrically near the fluid interface, approximated as a triangle surface mesh, and propagates the inside/outside information by an approximate solution of a Laplace equation. Volume fractions are computed based on signed distances, using either geometrical intersections between cells of the unstructured mesh and a sub-set of the surface mesh that represents the interface, or using a polynomial approximation and adaptive mesh refinement. Although primarily developed for multiphase flow simulations, the proposed algorithm can potentially be used for other problems that require a phase-indicator: inside/outside information with respect to an arbitrarily shaped surface on arbitrarily unstructured meshes.
Great Britain Ministry of Information - Daily Press Notices and Bulletins (1940-09-19)
Creators: name: Great Britain. Ministry Of Information.
Publisher: name: The University of Texas at Austin
Year: 1940
Subjects: World War, 1939-1945 – Social aspects
World War, 1939-1945 -- History
World War II
Second World War
World War Two
Great Britain

description: From the UK National Archives: http://www.nationalarchives.gov.uk/theartofwar/inf3.htm “Formed on September 4th 1939, the day after Britain’s declaration of war, the Ministry of Information (MOI) was the central government department responsible for publicity and propaganda in the Second World War. The initial functions of the MOI were threefold: news and press censorship; home publicity; and oversees publicity in Allied and neutral countries”. This collection contains Press Notices and Bulletins published by the MOI between 1939-1945. The Press Notices and Bulletins are among many publications and films issued by the agency during the war.
A CP-safe solution of the mu/ Bmu problem of gauge mediation
Creators: name: Evans, Jason L.
name: Sudano, Matthew
name: Yanagida, Tsutomu T.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We construct a model that naturally generates mu and B of the same order without producing large CP violating phases. This is easily accomplished once one permits these mass scales to be determined independently of the ordinary gauge-mediated soft masses. The alignment of phases is shown to emerge dynamically upon coupling to supergravity and is not unique to the model presented here.
description: 10 pages
Great Britain Ministry of Information - Daily Press Notices and Bulletins (1940-09-20)
Creators: name: Great Britain. Ministry Of Information.
Publisher: name: The University of Texas at Austin
Year: 1940
Subjects: World War, 1939-1945 – Social aspects
World War, 1939-1945 -- History
World War II
Second World War
World War Two
Great Britain

description: From the UK National Archives: http://www.nationalarchives.gov.uk/theartofwar/inf3.htm “Formed on September 4th 1939, the day after Britain’s declaration of war, the Ministry of Information (MOI) was the central government department responsible for publicity and propaganda in the Second World War. The initial functions of the MOI were threefold: news and press censorship; home publicity; and oversees publicity in Allied and neutral countries”. This collection contains Press Notices and Bulletins published by the MOI between 1939-1945. The Press Notices and Bulletins are among many publications and films issued by the agency during the war.
Andreev reflection from non-centrosymmetric superconductors and Majorana bound state generation in half-metallic ferromagnets
Creators: name: Duckheim, Mathias
name: Brouwer, Piet W.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study Andreev reflection at an interface between a half metal and a superconductor with spin-orbit interaction. While the absence of minority carriers in the half metal makes singlet Andreev reflection impossible, the spin-orbit interaction gives rise to triplet Andreev reflection, i.e., the reflection of a majority electron into a majority hole or vice versa. As an application of our calculation, we consider a thin half metal film or wire laterally attached to a superconducting contact. If the half metal is disorder free, an excitation gap is opened that is proportional to the spin-orbit interaction strength in the superconductor. For electrons with energy below this gap a lateral half-metal--superconductor contact becomes a perfect triplet Andreev reflector. We show that the system supports localized Majorana end states in this limit.
description: 14 pages, 3 figures
Low-temperature tapered-fiber probing of diamond NV ensembles coupled to GaP microcavities
Creators: name: Fu, K. -M. C.
name: Barclay, P. E.
name: Santori, C.
name: Faraon, A.
name: Beausoleil, R. G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In this work we present a platform for testing the device performance of a cavity-emitter system, using an ensemble of emitters and a tapered optical fiber. This method provides high-contrast spectra of the cavity modes, selective detection of emitters coupled to the cavity, and an estimate of the device performance in the single- emitter case. Using nitrogen-vacancy (NV) centers in diamond and a GaP optical microcavity, we are able to tune the cavity onto the NV resonance at 10 K, couple the cavity-coupled emission to a tapered fiber, and measure the fiber-coupled NV spontaneous emission decay. Theoretically we show that the fiber-coupled average Purcell factor is 2-3 times greater than that of free-space collection; although due to ensemble averaging it is still a factor of 3 less than the Purcell factor of a single, ideally placed center.
description: 15 pages, 6 figures
Colorful Hamilton cycles in random graphs
Creators: name: Chakraborti, Debsoumya
name: Frieze, Alan
name: Hasabnis, Mihir
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: Given an $n$ vertex graph whose edges have colored from one of $r$ colors $C=\{c_1,c_2,\ldots,c_r\}$, we define the Hamilton cycle color profile $hcp(G)$ to be the set of vectors $(m_1,m_2,\ldots,m_r)\in [0,n]^r$ such that there exists a Hamilton cycle that is the concatenation of $r$ paths $P_1,P_2,\ldots,P_r$, where $P_i$ contains $m_i$ edges of color $c_i$. We study $hcp(G_{n,p})$ when the edges are randomly colored. We discuss the profile close to the threshold for the existence of a Hamilton cycle and the threshold for when $hcp(G_{n,p})=\{(m_1,m_2,\ldots,m_r)\in [0,n]^r: m_1+m_2+\cdots+m_r=n\}$.
description: fixed minor typos
Discovery of Eclipses from the Accreting Millisecond X-ray Pulsar SWIFT J1749.4-2807
Creators: name: Markwardt, C. B.
name: Strohmayer, T. E.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report the discovery of X-ray eclipses in the recently discovered accreting millisecond X-ray pulsar Swift J1749.4-2807. This is the first detection of X-ray eclipses in a system of this type and should enable a precise neutron star mass measurement once the companion star is identified and studied. We present a combined pulse and eclipse timing solution that enables tight constraints on the orbital parameters and inclination and shows that the companion mass is in the range 0.6-0.8 M_sun for a likely range of neutron star masses, and that it is larger than a main sequence star of the same mass. We observed two individual eclipse egresses and a single ingress. Our timing model shows that the eclipse features are symmetric about the time of 90 deg longitude from the ascending node, as expected. Our eclipse timing solution gives an eclipse duration (from the mid-points of ingress to egress) of 2172 +/- 13 s. This represents 6.85% of the 8.82 hr orbital period. This system also presents a potential measurement of "Shapiro" delay due to General Relativity; through this technique alone, we set an upper limit to the companion mass of 2.2 M_sun.
description: Accepted to ApJ Letters
Perceptions of access to preventive oral health care at a community-based dental hygiene clinic for women impacted by the criminal justice system
Creators: name: Herlick, Kathleen
Publisher: name: University of British Columbia
Year: 2019

description: Objective: Women impacted by the criminal justice system experience barriers accessing oral health care. In 2013, the Elizabeth Fry Society of Greater Vancouver (EFry) and the University of British Columbia implemented a dental hygiene clinic at EFry at which dental hygiene students provide preventive care to women and children. This study aimed to describe the population utilizing the clinic and identify clients’ and EFry staff’s perceptions about how this clinic has influenced access to preventive oral care for women at EFry. Methods: Ninety-nine dental charts were reviewed retrospectively to determine client demographics, oral health status, services and referrals provided, and clinic attendance, and descriptive univariate statistical analyses were performed. Sixty-two satisfaction surveys were reviewed and three focus groups and three interviews with twelve clients and one focus group with four staff were conducted to identify perceptions of access to care. Focus groups and interviews were audio-recorded, transcribed verbatim, and analyzed using thematic analysis. The concept of access proposed by Penchansky and Thomas (1981) and Saurman (2015) was used to organize themes. Results: Ninety-three women and six children attended the clinic over three years. This clinic addressed women’s preventive care needs through the provision of on-site dental hygiene services. The clinic’s close proximity and services offered for which women did not need to pay out-of-pocket allowed women to access preventive care that would otherwise be inaccessible due to costs of care and transportation. The person-centered and trauma-informed care further facilitated access. Thirty-three women were referred for dental care, however access was limited by cost and likely issues of stigmatization from other dental care providers. Clinic aesthetics, communication related to time needed for care, and clinic communication strategies and advertisement precluded access. Conclusion: This clinic facilitated access to preventive oral care for a subset of women at EFry. Findings highlight that oral health care providers should accommodate for clients receiving public dental benefits and be knowledgeable about the trauma and stigmatization faced by this group. Oral health clinics should employ appropriate clinic advertisement and design, and further accommodate for this group through flexible appointment scheduling and guidance navigating the referral process.
Great Britain Ministry of Information - Daily Press Notices and Bulletins (1940-09-21)
Creators: name: Great Britain. Ministry Of Information.
Publisher: name: The University of Texas at Austin
Year: 1940
Subjects: World War, 1939-1945 – Social aspects
World War, 1939-1945 -- History
World War II
Second World War
World War Two
Great Britain

description: From the UK National Archives: http://www.nationalarchives.gov.uk/theartofwar/inf3.htm “Formed on September 4th 1939, the day after Britain’s declaration of war, the Ministry of Information (MOI) was the central government department responsible for publicity and propaganda in the Second World War. The initial functions of the MOI were threefold: news and press censorship; home publicity; and oversees publicity in Allied and neutral countries”. This collection contains Press Notices and Bulletins published by the MOI between 1939-1945. The Press Notices and Bulletins are among many publications and films issued by the agency during the war.
Quantum symmetries of Cayley graphs of abelian groups
Creators: name: Gromada, Daniel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 20G42 (Primary), 05C25, 18M25 (Secondary)

description: We study Cayley graphs of abelian groups from the perspective of quantum symmetries. We develop a general strategy for determining the quantum automorphism groups of such graphs. Applying this procedure, we find the quantum symmetries of the halved cube graph, the folded cube graph and the Hamming graphs.
description: 35 pages; corrected {\S}6.2
Additional file 1 of Ceftazidime and cefepime antagonize 5-fluorouracil’s effect in colon cancer cells
Creators: name: Pfab, Christina
name: Abgaryan, Anush
name: Danzer, Barbara
name: Mourtada, Fatme
name: Ali, Weaam
name: Gessner, André
name: El-Najjar, Nahed
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Cancer
subject: Hematology

description: Additional file 1.
Optimization of the Oil Extraction, Study the Chemical and Physical Properties of Arabica Spent Coffee Grounds
Creators: name: Sasikarn Panpraneecharoen
Publisher: name: กองบริหารการวิจัย
Year: 2020
Subjects: Oil extraction;Spent coffee grounds;Arabica coffee;Physical property;Chemical property

description: Science & Technology Asia, 25, 4, 12-19
A study of spectral and timing properties of Cyg X-1 based on a large sample of pointed RXTE observations
Creators: name: Gierlinski, Marek
name: Zdziarski, Andrzej A.
name: Done, Chris
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We study a large sample of RXTE PCA/HEXTE observations of Cyg X-1. We characterize the spectra by soft and hard X-ray colours (which define the spectral states), and fit them with a physical model of hybrid, thermal/non-thermal Comptonization. We then fit the power spectra by a sum of Lorentzians. We show the resulting correlations between the spectral colour (defining the hard, intermediate and soft spectral states), the Comptonization amplification factor, the fractional Compton reflection strength, and the peak frequency of the Lorentzians. We also calculate the fractional variability (rms) as a function of photon energy. We fit the obtained rms dependencies by physical models of varying accretion rate, a varying soft-photon input from an outer disc to a hot inner plasma, and a varying dissipation rate in a hot corona above a disc.
description: In press in: Frontier Objects in Astrophysics and Particle Physics, ed. F. Giovannelli & G. Mannocchi, Italian Physical Society (Bologna), 12 pages
Software-Based Dialogue Systems: Survey, Taxonomy and Challenges
Creators: name: Motger, Quim
name: Franch, Xavier
name: Marco, Jordi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: The use of natural language interfaces in the field of human-computer interaction is undergoing intense study through dedicated scientific and industrial research. The latest contributions in the field, including deep learning approaches like recurrent neural networks, the potential of context-aware strategies and user-centred design approaches, have brought back the attention of the community to software-based dialogue systems, generally known as conversational agents or chatbots. Nonetheless, and given the novelty of the field, a generic, context-independent overview on the current state of research of conversational agents covering all research perspectives involved is missing. Motivated by this context, this paper reports a survey of the current state of research of conversational agents through a systematic literature review of secondary studies. The conducted research is designed to develop an exhaustive perspective through a clear presentation of the aggregated knowledge published by recent literature within a variety of domains, research focuses and contexts. As a result, this research proposes a holistic taxonomy of the different dimensions involved in the conversational agents' field, which is expected to help researchers and to lay the groundwork for future research in the field of natural language interfaces.
Erasures repair for decreasing monomial-Cartesian and augmented Reed-Muller codes of high rate
Creators: name: López, Hiram H.
name: Matthews, Gretchen L.
name: Valvo, Daniel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences
subject: 11T71, 14G50

description: In this work, we present linear exact repair schemes for one or two erasures in decreasing monomial-Cartesian codes DM-CC, a family of codes which provides a framework for polar codes. In the case of two erasures, the positions of the erasures should satisfy a certain restriction. We present families of augmented Reed-Muller (ARM) and augmented Cartesian codes (ACar) which are families of evaluation codes obtained by strategically adding vectors to Reed-Muller and Cartesian codes, respectively. We develop repair schemes for one or two erasures for these families of augmented codes. Unlike the repair scheme for two erasures of DM-CC, the repair scheme for two erasures for the augmented codes has no restrictions on the positions of the erasures. When the dimension and base field are fixed, we give examples where ARM and ACar codes provide a lower bandwidth (resp., bitwidth) in comparison with Reed-Solomon (resp., Hermitian) codes. When the length and base field are fixed, we give examples where ACar codes provide a lower bandwidth in comparison with ARM. Finally, we analyze the asymptotic behavior when the augmented codes achieve the maximum rate.
Constructing entanglement witnesses for infinite-dimensional systems
Creators: name: Hou, Jinchuan
name: Qi, Xiaofei
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It is shown that, every entangled state in an infinite-dimensional composite system has a simple entanglement witness of the form $αI+T$ with $α$ a nonnegative number and $T$ a finite rank self-adjoint operator. We also provide two methods of constructing entanglement witness and apply them to obtain some entangled states that cannot be detected by the PPT criterion and the realignment criterion.
description: 15 pages
Great Britain Ministry of Information - Daily Press Notices and Bulletins (1940-09-22)
Creators: name: Great Britain. Ministry Of Information.
Publisher: name: The University of Texas at Austin
Year: 1940
Subjects: World War, 1939-1945 – Social aspects
World War, 1939-1945 -- History
World War II
Second World War
World War Two
Great Britain

description: From the UK National Archives: http://www.nationalarchives.gov.uk/theartofwar/inf3.htm “Formed on September 4th 1939, the day after Britain’s declaration of war, the Ministry of Information (MOI) was the central government department responsible for publicity and propaganda in the Second World War. The initial functions of the MOI were threefold: news and press censorship; home publicity; and oversees publicity in Allied and neutral countries”. This collection contains Press Notices and Bulletins published by the MOI between 1939-1945. The Press Notices and Bulletins are among many publications and films issued by the agency during the war.
Great Britain Ministry of Information - Daily Press Notices and Bulletins (1940-09-23)
Creators: name: Great Britain. Ministry Of Information.
Publisher: name: The University of Texas at Austin
Year: 1940
Subjects: World War, 1939-1945 – Social aspects
World War, 1939-1945 -- History
World War II
Second World War
World War Two
Great Britain

description: From the UK National Archives: http://www.nationalarchives.gov.uk/theartofwar/inf3.htm “Formed on September 4th 1939, the day after Britain’s declaration of war, the Ministry of Information (MOI) was the central government department responsible for publicity and propaganda in the Second World War. The initial functions of the MOI were threefold: news and press censorship; home publicity; and oversees publicity in Allied and neutral countries”. This collection contains Press Notices and Bulletins published by the MOI between 1939-1945. The Press Notices and Bulletins are among many publications and films issued by the agency during the war.
Nuclear magnetic resonance measurements reveal the origin of the Debye process in monohydroxy alcohols
Creators: name: Gainaru, C.
name: Meier, R.
name: Schildmann, S.
name: Lederle, C.
name: Hiller, W.
name: Rössler, E. A.
name: Böhmer, R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Monohydroxy alcohols show a structural relaxation and at longer time scales a Debye-type dielectric peak. From spin-lattice relaxation experiments using different nuclear probes an intermediate, slower-than-structural dynamics is identified for n-butanol. Based on these findings and on diffusion measurements, a model of self-restructuring, transient chains is proposed. The model is demonstrated to explain consistently the so far puzzling observations made for this class of hydrogen-bonded glass forming liquids.
description: 4 pages, 4 figures
Counterflows of knowledge : the transnational circulation of physical culture practices between India and the West during the early 20th century
Creators: name: Ramachandran, Aishwarya
Publisher: name: University of British Columbia
Year: 2019

description: The aim of this study is to examine the transnational flows of physical cultures, particularly physical education, yoga, and modern dance, between India and the West during the early decades of the 20th century. I develop two case studies where individuals became involved in circulating dance and physical education practices between India, Western Europe and the United States, illuminating how colonial powers conceived of European modernity in opposition to and in conjunction with the ‘Orient’ and how Indian nationalists developed a monolithic cultural identity along rigid lines of the nation state. The first case study examines how the YMCA (‘Y’) brought American sport and physical education; particularly ideas around Muscular Christianity, to India in the form of missionary work. It focuses primarily on the efforts of the physical educator Harry Crowe Buck, who arrived in India in 1920 to direct the YMCA School of Physical Education in Madras. The second case examines the career of Indian modern dancer Uday Shankar (1900-1977), and his involvement in shaping Western ideas around Oriental dance and Indian culture in the 1930s. It also considers his reception in India where he received harsh condemnation from the public because his performances were not sufficiently grounded in Indian dance traditions. Drawing from studies in postcolonial and physical cultural theory, this thesis pays special attention to the areas of Indian physical education and modern dance during the late colonial period. Physical cultures warrant attention for their importance in shaping colonial and nationalist thought, as the body became critically important in the ‘articulation of imperial ideologies and in the often-fraught dynamics of cross-cultural contact’, particularly in shaping ideas around gender roles, race relations and national identity in India and the West, that persisted beyond the colonial period. In my arguments, I employ Edward Said’s contrapuntal approach, which involves examining documents with an awareness of the complex social, political and cultural circumstances that underlie them. This approach influences how the case studies are written, as I pay explicit attention to the contexts of British imperialism and Indian cultural nationalism, and the ways they intersected during the early 20th century.
Additional file 1 of Universal prediction of cell-cycle position using transfer learning
Creators: name: Zheng, Shijie C.
name: Stein-O’Brien, Genevieve
name: Augustin, Jonathan J.
name: Slosberg, Jared
name: Carosso, Giovanni A.
name: Winer, Briana
name: Shin, Gloria
name: Bjornsson, Hans T.
name: Goff, Loyal A.
name: Hansen, Kasper D.
Publisher: name: figshare
Year: 2022
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: Hematology
subject: Computational Biology

description: Additional file 1 Supplementary Materials. Supplementary methods about comparison with existing cell cycle tools and supplementary figures (Fig. S1-S36).
title: К истории международной конференции «Химическая термодинамика и кинетика»
Creators: name: Захаров, Анатолий
name: Кукушкин, Сергей
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2020

description: В мае 2020 г. на базе Новгородского государственного университета им. Ярослава Мудрого состоялась Десятая международная конференция «Химическая термодинамика и кинетика», посвященная 90-летию со дня рождения выдающегося физика-теоретика, профессора, член-корреспондента Национальной академии наук Украины Виталия Валентиновича Слёзова (09.03.1930—30.10.2013). В работе содержится краткая история проведения серии Международных конференций «Химическая термодинамика и кинетика».
Natural PQ symmetry in the 3-3-1 model with a minimal scalar sector
Creators: name: Montero, J. C.
name: Sánchez-Vega, B. L.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the framework of a 3-3-1 model with a minimal scalar sector we make a detailed study concerning the implementation of the PQ symmetry in order to solve the strong CP problem. For the original version of the model, with only two scalar triplets, we show that the entire Lagrangian is invariant under a PQ-like symmetry but no axion is produced since an U(1) subgroup remains unbroken. Although in this case the strong CP problem can still be solved, the solution is largely disfavored since three quark states are left massless to all orders in perturbation theory. The addition of a third scalar triplet removes the massless quark states but the resulting axion is visible. In order to become realistic the model must be extended to account for massive quarks and invisible axion. We show that the addition of a scalar singlet together with a Z_N discrete gauge symmetry can successfully accomplish these tasks and protect the axion field against quantum gravitational effects. To make sure that the protecting discrete gauge symmetry is anomaly free we use a discrete version of the Green-Schwarz mechanism.
description: 18 pages, 1 figure, 3 tables