cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Modified current induced domain wall motion in GaMnAs nanowire
Creators: name: Vernier, Nicolas
name: Adam, Jean-Paul
name: Thiaville, Andre
name: Jeudy, Vincent
name: Lemaitre, Aristide
name: Ferré, Jacques
name: Faini, Giancarlo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report on current induced domain wall propagation in a patterned GaMnAs microwire with perpendicular magnetization. An unexpected slowing down of the propagation velocity has been found when the moving domain wall extends over only half of the width of the wire. This slowing down is related to the elongation of a longitudinal wall along the axis of the wire. By using an energy balance argument, the expected theoretical dependence of the velocity change has been calculated and compared with the experimental results. According to this, the energy associated to the longitudinal domain wall should change when a current passes through the wire. These results provide possible evidence of transverse spin diffusion along a longitudinal domain wall.
Photonic polarization gears for ultra-sensitive angular measurements
Creators: name: D'Ambrosio, V.
name: Spagnolo, N.
name: Del Re, L.
name: Slussarenko, S.
name: Li, Y.
name: Kwek, L. C.
name: Marrucci, L.
name: Walborn, S. P.
name: Aolita, L.
name: Sciarrino, F.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Quantum metrology bears a great promise in enhancing measurement precision, but is unlikely to become practical in the near future. Its concepts can nevertheless inspire classical or hybrid methods of immediate value. Here, we demonstrate NOON-like photonic states of m quanta of angular momentum up to m=100, in a setup that acts as a "photonic gear", converting, for each photon, a mechanical rotation of an angle θ into an amplified rotation of the optical polarization by mθ, corresponding to a "super-resolving" Malus' law. We show that this effect leads to single-photon angular measurements with the same precision of polarization-only quantum strategies with m photons, but robust to photon losses. Moreover, we combine the gear effect with the quantum enhancement due to entanglement, thus exploiting the advantages of both approaches. The high "gear ratio" m boosts the current state-of-the-art of optical non-contact angular measurements by almost two orders of magnitude.
description: 10 pages, 4 figures, + supplementary information (10 pages, 3 figures)
LGBTQ+ Venues in London: An investigation into the socio-economic, technological, and cultural drivers of nightlife decline.
Creators: name: Salem, Alexander
Publisher: name: Sojourners Undergraduate Journal of Sociology
Year: 2021

description: Following numerous accounts lamenting the closure of over half of London’s LGBTQ+ nightlife venues in the last decade alone, this research paper sought to investigate the underlying factors leading to the permanent closure of many of the capital’s cherished queer spaces. I contextualise this paper in connection with a recent report commissioned by the Mayor of London that found that 58 percent of London’s LGBTQ+ venues had closed between 2006 and 2017. Building on these findings, my research constitutes of three overarching research questions that examine: how are processes of gentrification impacting London’s LGBTQ+ nightlife venues, how are LGBTQ+ dating apps and online spaces impacting London’s LGBTQ+ nightlife venues, and how are changing attitudes and habits within and towards London’s LGBTQ+ communities impacting London’s LGBTQ+ nightlife venues? In order to develop a nuanced understanding of the multitude of factors which contributed to the closures, this paper utilised over a dozen semi-structured interviews with managers, event organisers of London’s LGBTQ+ venues, and notable members of London’s LGBTQ+ communities, which included: activists, artists, and performers.The study’s findings indicated that processes of gentrification were largely responsible for these closures, and presented a plethora of challenges for London’s existing LGBTQ+ venues struggling to adapt to these changing socio-economic dynamics in the city. The increasing popularity of online LGBTQ+ dating apps as a means of camaraderie as opposed to frequenting physical spaces of LGBTQ+ venues raised further questions surrounding the viability of certain LGBTQ+ venues in the future. This paper further suggests that certain younger LGBTQ+ generations wish to construct and frequent new forms of queer nightlife, beyond the confines of the homonormative gay neighbourhood.
description: Sojourners Undergraduate Journal of Sociology, Vol. 12 No. 1 (2021): Sojourners Volume 12-13
Can Massive Gravity Explain the Mass Discrepancy - Acceleration Relation of Disk Galaxies?
Creators: name: Trippe, Sascha
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The empirical mass discrepancy-acceleration (MDA) relation of disk galaxies provides a key test for models of galactic dynamics. In terms of modified laws of gravity and/or inertia, the MDA relation quantifies the transition from Newtonian to modified dynamics at low centripetal accelerations a_c < 10^-10 m/s^2. As yet, neither dynamical models based on dark matter nor proposed modifications of the laws of gravity/inertia have predicted the functional form of the MDA relation. In this work, I revisit the MDA data and compare them to four different theoretical scaling laws. Three of these scaling laws are entirely empirical, the fourth one - the "simple mu" function of Modified Newtonian Dynamics - derives from a toy model of gravity based on massive gravitons (the "graviton picture"). All theoretical MDA relations comprise one free parameter of the dimension of an acceleration, Milgrom's constant a_M. I find that the "simple mu" function provides a good fit to the data free of notable systematic residuals and provides the best fit among the four scaling laws tested. The best-fit value of Milgrom's constant is a_M = (1.06 +/- 0.05)*10^-10 m/s^2. Given the successful prediction of the functional form of the MDA relation, plus an overall agreement with the observed kinematics of stellar systems spanning eight orders of magnitude in size and 14 orders of magnitude in mass, I conclude that the "graviton picture" is sufficient (albeit probably not a necessary or unique approach) to describe galactic dynamics on all scales well beyond the scale of the solar system. This suggests that, at least on galactic scales, gravity behaves as if it was mediated by massive particles.
description: 8 pages, 2 figures; to appear in JKAS (submitted 2013 April 15; accepted 2013 May 27)
title: INFLUENCE OF WATER INJECTION RATE ON THE VORTECONE, AN IMPINGEMENT SCREEN, AND A CONVENTIONAL FILTER SCREEN CLEANING EFFICIENCY
Creators: name: Velasquez, Oscar
Publisher: name: University of Kentucky Libraries
Year: 2019

description: Industrial produced respirable particles are known to affect the respirable tract of workers causing serious illness or even death. These particles can be found in any mining operation’s environment, new regulations by the Mine Safety and Health Administration (MSHA) in 2014 reduced the allowable limit of dust exposure for underground workers. Dust control practices have been improving over the years to lower the number of incidents caused by these particles. In underground mining, water sprays and scrubber systems have become the most used dust control methods. Water sprays create numerous fine water droplets to capture dust once it has become airborne.

The goal of thesis is to determine the influence of water injection on cleaning efficiency of the Vortecone scrubber, a device used to remove paint overspray particles from the airstream in the automotive industry. The Vortecone is compared to a non-clogging screen developed at the Department of Mining Engineering, University of Kentucky, and the conventional screen found in a flooded-bed dust scrubber system in a continuous miner. Tests were done in a random order to prevent experimental contamination; all experiments were repeated three times in order to minimize any systematic errors in the procedures. A total of 18 tests were run to determine the relation between the amount of water flow injected into the system and the cleaning efficiency on each one of the filter systems. Water flows were set at 2.0 gpm (7.57 lit/min), 4.0 gpm (15.12 lit/min) and 6.0 gpm (22.72 lit/min). Additionally, tests were also run in a dry condition (no water flowing through the system), so that the difference between the cleaning efficiency curves with and without water flow could be compared. Airflows were set at 600 cfm and 800 cfm (0.28 m3/s and 0.38 m3/s respectively). JMP statistical software was used to generate the sequence in which the tests were conducted. The results of this study show that both the Vortecone and the impingement screen have great cleaning efficiency overall compared to the conventional screen.

The conventional fibrous screen is the only water flow-rate dependent system, while the Vortecone is the filter that requires the lowest amount of water to achieve the best dust capturing rate.
description: Copyright © Oscar Velasquez, 2019
title: How to Improve Project Management for Agile Federation Development
Creators: name: Kotikalpudi, Priyanka
Publisher: name: Old Dominion University Libraries
Year: 2010

description: Developing a simulation federation out of a variety of heterogeneous simulation solutions is a complex task requiring very effective project management support in order to accomplish the common objectives and goals of this M&S federation. This thesis study conducts a detailed survey of available literature to identify the project management methods that can be extended to be applied to manage the development of simulation systems. The literature review led to the following two main results: (a) in general, there is insufficient literature dealing with M&S challenges for project management, (b) in particular, the two challenges of often changing requirements leading to a need of agile federations and the special role of conceptualization in the modeling process require support of M&S project management.

The study underlying this thesis evaluated agile project management methods, in particular Scrum, and found that they are feasible and can be very effectively applied to support project management related issues in developing a simulation federation. In order to cope with the special role of modeling and conceptualization, a questionnaire was developed aiming to understand the current project management processes employed in the M&S community. The questionnaire provides a starting point for conducting further investigation to gain more insight on what project management support is needed in which stage of the M&S projects and which artifacts can be used to support the process.
In-situ Broadband Cryogenic Calibration for Two-port Superconducting Microwave Resonators
Creators: name: Yeh, Jen-Hao
name: Anlage, Steven M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Superconductivity (cond-mat.supr-con)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We introduce an improved microwave calibration method for use in a cryogenic environment, based on a traditional three-standard calibration, the Thru-Reflect-Line (TRL) calibration. The modified calibration method takes advantage of additional information from multiple measurements of an ensemble of realizations of a superconducting resonator, as a new pseudo-Open standard, to correct errors in the TRL calibration. We also demonstrate an experimental realization of this in-situ broadband cryogenic calibration system utilizing cryogenic switches. All calibration measurements are done in the same thermal cycle as the measurement of the resonator (requiring only an additional 20 minutes), thus avoiding 4 additional thermal cycles for traditional TRL calibration (which would require an additional 12 days). The experimental measurements on a wave-chaotic microwave billiard verify that the new method significantly improves the measured scattering matrix of a high-quality-factor superconducting resonator.
description: 9 pages, 8 figures
title: Технологические процессы изготовления кернов спеченных электродов
Creators: name: ., В.В. Прасицкий – д.т.н., профессор, Калужский филиал МГТУ им. Н.Э. Баумана E-mail: sintel40@yandex.ru Чжо Зай – аспирант, Калужский филиал МГТУ им. Н.Э. Баумана E-mail: kyawzay49@gmail.com
Publisher: name: Издательство Радиотехника
Year: 2019

description: Постановка проблемы. При изготовлении спеченных электродов особое значение имеет качество керна на основе вольфрама, вокруг которого методом прессования формируется источник электронов. От физико-химических свойств керна зависят параметры готового источника электронной эмиссии.
Цель. Изучить технологический процесс изготовления кернов, используемых для формирования на их основе спеченных электродов или металлических электродов поджига.
Результаты. Рассмотрены технологии изготовления кернов диаметром 1 мм, а также и диаметром более 1 мм.
Практическая значимость. Проведенный анализ технологических процессов показал их пригодность для изготовления как прессованных электродов, так и металлических электродов поджига.
Improved Nb SIS devices for heterodyne mixers between 700 GHz and 1.3 THz with NbTiN transmission lines using a normal metal energy relaxation layer
Creators: name: Westig, M. P.
name: Selig, S.
name: Jacobs, K.
name: Klapwijk, T. M.
name: Honingh, C. E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this paper we demonstrate experimentally the implementation of a niobium-trilayer junction with an aluminum-oxide tunnel barrier, embedded in a high-gap superconducting niobium-titanium-nitride circuit. Previously reported heating by quasiparticle trapping is removed by inserting a normal metal layer of gold between the niobium junction and the niobium-titanium-nitride layer. We analyze in dc-characterization measurements the cooling of the nonequilibrium quasiparticles in various device geometries having different gold layer thickness and shape. Our work is concluded with remarks for future heterodyne mixer experiments using our device technology.
description: 11 pages, 6 figures, 4 tables
“At least we’re in Canada”: A critical perspective applying Du Bois and Simmel to Black African students' identity experiences in Canadian universities
Creators: name: Okusi, Ilerioluwa
Publisher: name: Sojourners Undergraduate Journal of Sociology
Year: 2021

description: Using concepts from theorists W.E.B Du Bois and Georg Simmel, I examine the sociological dimensions to the identity experiences of Black African students as temporary international or permanent immigrants attending universities in Canada. In what ways do social structures in the host country of Canada inhibit positive experiences of Black African students in Canadian universities? Du Bois’ concepts of ‘double consciousness’ and the metaphor of ‘the veil’ highlight the difficulty that Black folks in America experience as they live their identities against and through the eyes of white supremacy. This concept is extended to the experience of Black African students in Canada where Black people are a visible minority and experience racism (Creese, 2020). Further, Simmel’s concept of the ‘blasé attitude’, also referred simply as blasé, is about the sense of indifference personified by individuals living in metropolises due to overstimulation and an overly commodified lifestyle in the city environment. The blasé is applicable to understanding the experience of Black African students in Canadian universities, which are often in metropolitan cities. Although Black African students, especially those who are international, are largely optimistic as they venture into Canadian universities, using the concepts of double consciousness, the veil and the blasé attitude, a socio-cultural reality is revealed that counters the positive image that Canadian universities themselves portray. In this reality, Black African students encounter particular challenges connected to their perceived or self-proclaimed Black African identities, which serve as an impediment to their wellbeing, academic growth and career advancement. Using a critical race theory framework, Du Bois’ concept of double consciousness and the veil, and Simmel’s concept of blasé are used to examine how systems and practices of racism, neo-racism, and attitudes of complacency infringe on Black African students having more holistically positive experiences while studying at Canadian universities, despite the fact that many well-known universities are located in ‘diverse’ or ‘multicultural’ cities in Canada. These concepts are applied to show how certain sociological factors, that is, systems, processes, practices and actions that are already in place, work against Black African identities and function against these students once they enter these settings.
description: Sojourners Undergraduate Journal of Sociology, Vol. 12 No. 1 (2021): Sojourners Volume 12-13
title: Применение методов нелинейного программирования и матричных операторов в задаче синтеза регуляторов следящих систем
Creators: name: ., Ю.П. Корнюшин – д.т.н., профессор, Калужский филиал МГТУ им. Н.Э. Баумана E-mail: theroland@yandex.ru
Publisher: name: Издательство Радиотехника
Year: 2019

description: Постановка проблемы. Рассматривается задача синтеза регуляторов, формирующих управление, обеспечивающих слежение фазовых координат объекта за произвольно изменяющимся сигналом для класса нелинейных объектов управления.
Цель. Разработать метод синтеза физически реализуемых регуляторов следящих систем для класса нелинейных объектов управления, формирующих управление по принципу обратной связи.
Результаты. Предложен алгоритм синтеза, включающий в себя: 1) линеаризацию уравнения динамики объекта согласно схеме Ньютона–Канторовича; 2) параметризацию функционала качества и линеаризованных уравнений, описывающих динамику объекта; 3) нахождение оптимального программного управления на некотором интервале времени, как функцию, зависящую от начального состояния объекта и отслеживаемого сигнала; 4) размораживание начального и конечного состояния объекта управления, формирование алгоритма управления регулятора и организация итерационного процесса определенной схемой Нью-тона–Канторовича.
Практическая значимость. Предложенный алгоритм может использоваться при проектировании систем с автоматически следящих за частотой и фазой входных колебаний в радиоприемных устройствах, системах автоматического слежения за временным положением радио- и видиоимпульсов в радиолокации, радионавигации, радиоуправлении, прицельных системах, угломерных следящих системах, предназначенных для сопровождения целей, слежения за искусственными спутниками Земли или другими объектами ближнего космоса и т.д.
Constructing Tent City: Media representations of Oppenheimer Park
Creators: name: Jankovic, Tara
Publisher: name: Sojourners Undergraduate Journal of Sociology
Year: 2021

description: This paper explores the role of media representations in constructing the landscape of Vancouver’s inner-city. Emphasizing how landscape is discursively created, this paper analyzes the imposition of socio-spatial realities on the Downtown Eastside. Focusing on the 2019 tent city at Oppenheimer Park, I explore how processes of territorial stigmatization, dispossession, and the erasure of disorderly bodies are directly related to media representations. Building off Blomley & Liu’s (2013) work, I use a framing analysis to shed light on the dominant narratives used in local news reporting on tent city. As outlined by Entman (1993), framing analysis illuminates how certain pieces of information are highlighted to enhance the probability that receivers will perceive and process it. Often used for political purposes, framing is a powerful tool which can influence and shape public opinion. Three prominent frames were found in this research; criminalization, socialization, and disruption.
description: Sojourners Undergraduate Journal of Sociology, Vol. 12 No. 1 (2021): Sojourners Volume 12-13
title: Влияние распределения временных слотов доступа алгоритма predictive p-persistent CSMA на характеристики сенсорной сети
Creators: name: ., С. А. Даденков – к.т.н., доцент, кафедра автоматики и телемеханики, Пермский национальный исследовательский политехнический университет E-mail: dadenkov@rambler.ru Е. Л. Кон – к.т.н., профессор, кафедра автоматики и телемеханики, Пермский национальный исследовательский политехнический университет
Publisher: name: Издательство Радиотехника
Year: 2019

description: Постановка проблемы. В настоящее время случайный доступ к каналу успешно применяется в проводных промыш-ленных, сенсорных и беспроводных децентрализованных самоорганизующихся сетях связи. Передаваемый в анализи-руемых сетях трафик имеет «взрывной» спорадический характер. Это актуализирует исследование и применение ал-горитмов, самоадаптирующихся к изменяющемуся уровню загрузки сетевого канала, в частности, алгоритма с прогно-зированием нагрузки predictive p-persistent CSMA.
Цель. Исследовать влияние основных законов распределения слотов соперничества узлов за доступ к каналу на ха-рактеристики сетевого обмена при различной загруженности сетевого канала.
Результаты. Изучено влияние распространенных законов распределения (выбора) временных слотов доступа алгоритма predictive p-persistent CSMA на характеристики надежности и быстродействия доставки сетевых сообщений в сенсорной сети LonWorks. Проведены необходимые имитационные эксперименты функционирования сети с сервисами надежной и ненадежной доставки сообщений при трех различных законах выбора слотов соперничества (равномерный, нормальный, экспоненциальный). Выполнен анализ полученных характеристик функционирования сети при различных загруженности сетевого канала и сервисах доставки.
Практическая значимость. Сделаны выводы и предложены рекомендации по выбору закона распределения с учетом предполагаемой загрузки сетевого канала и в целях обеспечения наилучших показателей функционирования сети по надежности и времени доставки.
Let’s Talk About Sex (Work): An analysis of the criminalization of sex work in Canada
Creators: name: Densmore, Bonnie
Publisher: name: Sojourners Undergraduate Journal of Sociology
Year: 2021

description: This paper examines the implementation of the 2014 Protection of Communities and Exploited Persons Act (PCEPA) and how it has impacted the experiences of sex workers in Canada. Previous research on this topic has largely focused on the effects of prostitution laws prior to 2014. This work emphasized the risks associated with the profession, the relations between workers and protective services, and the stigmatization of the industry. I aim to contribute to this literature on sex work in Canada by analyzing reports and news articles from five sex work advocacy groups across Canada to evaluate the effects of the PCEPA. Findings indicate that not only has the PCEPA failed to correct its previous shortcomings, but it has further amplified the risks associated with the profession, alienation from law enforcement and health services, and the stigmatization of sex workers.
description: Sojourners Undergraduate Journal of Sociology, Vol. 12 No. 1 (2021): Sojourners Volume 12-13
Parametrized KAM Theorem for Differentiable Hamiltonian Vector Fields without Action-Angle Variables
Creators: name: Jong, Wu-hwan
name: Paek, Jin-chol
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: Dynamical Systems (math.DS)
subject: Chaotic Dynamics (nlin.CD)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: Primary 37J40, Secondary 70H08

description: We proved a parametrized KAM theorem in Hamiltonian system which has differentiable Hamiltonian without action-angle coordinates. It is a generalization of the result of [Llave et al. 2005] that deals with real analytic Hamiltonians.
description: 13 pages
Marriage Plans: A study of marital expectations of 19-24-year-old women
Creators: name: Chitsaz, Sara
Publisher: name: Sojourners Undergraduate Journal of Sociology
Year: 2021

description: There is a gap in sociological research on the topic of young women's perceptions and expectations of marriage in the context of societal shifts in marriage as an institution. The aim of this study is to address the question of how young women perceive marriage, what their marital expectations are, and what factors they perceive to influence these ideas of marriage. Data from six semi-structured, in-depth interviews with women from Vancouver, B.C., who are between the ages of 19 and 24 is used as the basis for this analysis. The main findings include that the respondents consistently express a desire for an even distribution of labor in their potential future marriages but define this differently in terms of how they expect labour would be divided and how evenly they expect to share the household labour with their partner, that media and parents are commonly cited as primary influences on marital perceptions and expectations, and that respondents shared a sense of a common timeline of certain steps (such as getting married or having children) they are expected to take in life, which adds pressure on women to get married. While the results of this study are not generalizable to a broader population, it may provide a starting point for further discussion on women's marital expectations and perceptions that includes the voices of women.
description: Sojourners Undergraduate Journal of Sociology, Vol. 12 No. 1 (2021): Sojourners Volume 12-13
Social Media and the Global Climate Strike: A tool for youth climate change activists and politicians
Creators: name: Chia, Justin
Publisher: name: Sojourners Undergraduate Journal of Sociology
Year: 2021

description: The Global Climate Strike has brought youth climate change activism to the forefront of social issues in Canada. Recent scholarship has established the prominence and success of Canadian youth as climate change activists (Tupper 2014). Much of this success can be attributed to the youth’s adoption of social media as an effective tool for mobilizing support on a national and global scale (Arnold et al., 2009). This paper analyzes youth climate change activists’ use of social media as a tool for the global climate strike movement in Canada. This analysis will employ the Resource mobilization and Political process theories as frameworks to analyze the social media framing techniques employed by Global Climate Strike organizers and politicians, respectively. The applicability of these theories in relation to social media and the Global Climate Strike will then be evaluated using the four stage approach to social movement theory.
description: Sojourners Undergraduate Journal of Sociology, Vol. 12 No. 1 (2021): Sojourners Volume 12-13
LT-ViT: A Vision Transformer for multi-label Chest X-ray classification
Creators: name: Marikkar, Umar
name: Atito, Sara
name: Awais, Muhammad
name: Mahdi, Adam
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Vision Transformers (ViTs) are widely adopted in medical imaging tasks, and some existing efforts have been directed towards vision-language training for Chest X-rays (CXRs). However, we envision that there still exists a potential for improvement in vision-only training for CXRs using ViTs, by aggregating information from multiple scales, which has been proven beneficial for non-transformer networks. Hence, we have developed LT-ViT, a transformer that utilizes combined attention between image tokens and randomly initialized auxiliary tokens that represent labels. Our experiments demonstrate that LT-ViT (1) surpasses the state-of-the-art performance using pure ViTs on two publicly available CXR datasets, (2) is generalizable to other pre-training methods and therefore is agnostic to model initialization, and (3) enables model interpretability without grad-cam and its variants.
description: 5 pages, 2 figures
Compression as a universal principle of animal behavior
Creators: name: Ferrer-i-Cancho, R.
name: Hernández-Fernández, A.
name: Lusseau, D.
name: Agoramoorthy, G.
name: Hsu, M. J.
name: Semple, S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Computation and Language (cs.CL)
subject: Information Theory (cs.IT)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: A key aim in biology and psychology is to identify fundamental principles underpinning the behavior of animals, including humans. Analyses of human language and the behavior of a range of non-human animal species have provided evidence for a common pattern underlying diverse behavioral phenomena: words follow Zipf's law of brevity (the tendency of more frequently used words to be shorter), and conformity to this general pattern has been seen in the behavior of a number of other animals. It has been argued that the presence of this law is a sign of efficient coding in the information theoretic sense. However, no strong direct connection has been demonstrated between the law and compression, the information theoretic principle of minimizing the expected length of a code. Here we show that minimizing the expected code length implies that the length of a word cannot increase as its frequency increases. Furthermore, we show that the mean code length or duration is significantly small in human language, and also in the behavior of other species in all cases where agreement with the law of brevity has been found. We argue that compression is a general principle of animal behavior, that reflects selection for efficiency of coding.
description: This is the pre-proofed version. The published version will be available at http://onlinelibrary.wiley.com/journal/10.1111/%28ISSN%291551-6709
title: National Marine Fisheries Service Endangered Species Act Section 7 Biological Opinion Title: Biological Opinion on the Issuance of Permit No. 20339 to the NMFS Southeast Fisheries Center and Permit No. 19621-01 to Michael Arendt (South Carolina Department of Natural Resources, Marine Resources Division) for Scientific Research on Sea Turtles
titleType: Other
Creators: name: United States. National Marine Fisheries Service
Publisher: name: United States. National Marine Fisheries Service
Year: 2016

description: ESA Section 7 Consultation ; OPR-2016-00071
Framing Rationality and Emotionality in Wet'suwet'en Protests
Creators: name: Badat, Moneeza
Publisher: name: Sojourners Undergraduate Journal of Sociology
Year: 2021

description: On January 7, 2019, the RCMP confronted anti-pipeline protesters of the Wet’suwet’en First Nation near Houston, B.C. in a military-style raid. The confrontation took place over the contested Coastal GasLink (CGL) pipeline project which proposes to carry gas from Dawson Creek to Kitimat but must cross traditional and unceded land in order to do so. This study seeks to answer the question: How does the media depict the Wet’suwet’en protests, including protesters and government agents, using frames of rationality/emotionality, and how frequent are these frames? Scholars of social movements have long argued that the media is biased in reporting social movements (Giorgi, 2017; Corrigall-Brown and Wilkes, 2012; Grenier, 1994; McCluskey et al., 2009; McLeod and Detenber, 1999; Smith et al., 2001; Gilcrhist, 2010). One way the media does this is by representing protesters as irrational and emotional while simultaneously depicting figures of authority like the police and governmental officials as the opposite—rational and objective (Corrigall-Brown and Wilkes, McCluskey et al., 2009; Grenier, 1994). This study uses a feminist deconstruction approach to analyze how the media frames Wet’suwet’en protesters using frames of rationality and emotionality. I present my research on how three Canadian news publications framed the Wet’suwet’en protests using frames of rationality and emotionality and explore the feminist implications of this framing. The research shows that while media publications generally tend to frame protesters as rational, protesters are still framed as more emotional than government agents. In some cases, the frame of emotionality may latently suggest that protesters lack rational judgement and credibility. Some types of media tend to frame protesters as more rational or irrational than others. Indigenous publications may tend to overemphasize the rationality of protesters compared to other mainstream publications, perhaps to counter or undo the dominant narrative in mainstream publications.
description: Sojourners Undergraduate Journal of Sociology, Vol. 12 No. 1 (2021): Sojourners Volume 12-13
One pendulum to run them all
Creators: name: Barenboim, Gabriela
name: Oteo, J. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Classical Physics (physics.class-ph)
subject: Popular Physics (physics.pop-ph)
subject: FOS: Physical sciences

description: The analytical solution of the three--dimensional linear pendulum in a rotating frame of reference is obtained, including Coriolis and centrifugal accelerations, and expressed in terms of initial conditions. This result offers the possibility of treating Foucault and Bravais pendula as trajectories of the very same system of equations, each of them with particular initial conditions. We compare with the common two--dimensional approximations in textbooks. A previously unnoticed pattern in the three--dimensional Foucault pendulum attractor is presented.
description: 20 pages, 10 figures
Strong anisotropic influence of local-field effects on the dielectric response of α-MoO3
Creators: name: Lajaunie, Luc
name: Boucher, Florent
name: Dessapt, Rémi
name: Moreau, Philippe
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Dielectric properties of α-MoO3 are investigated by a combination of valence electron-energy loss spectroscopy and ab initio calculation at the random phase approximation level with the inclusion of local-field effects (LFE). A meticulous comparison between experimental and calculated spectra is performed in order to interpret calculated dielectric properties. The dielectric function of MoO3 has been obtained along the three axes and the importance of LFE has been shown. In particular, taking into account LFE is shown to be essential to describe properly the intensity and position of the Mo-N2,3 edges as well as the low energy part of the spectrum. A detailed study of the energy-loss function in connection with the dielectric response function also shows that the strong anisotropy of the energy-loss function of α-MoO3 is driven by an anisotropic influence of LFE. These LFE significantly dampen a large peak in ε2, but only along the [010] direction. Thanks to a detailed analysis at specific k-points of the orbitals involved in this transition, the origin of this peak has not only been evidenced but a connection between the inhomogeneity of the electron density and the anisotropic influence of local-field effects has also been established. More specifically, this anisotropy is governed by a strongly inhomogeneous spatial distribution of the empty states. This depletion of the empty states is localized around the terminal oxygens and accentuates the electron inhomogeneity.
description: Supplemental Material included
Optimality of a class of entanglement witnesses for $3\otimes 3$ systems
Creators: name: Qi, Xiaofei
name: Hou, Jinchuan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: 15A69, 15A86

description: Let $Φ_{t,π}: M_3({\mathbb C}) \rightarrow M_3({\mathbb C})$ be a linear map defined by $Φ_{t,π}(A)=(3-t)\sum_{i=1}^3E_{ii}AE_{ii}+t\sum_{i=1}^3E_{i,π(i)}AE_{i,π(i)}^†-A$, where $0\leq t\leq 3$ and $π$ is a permutation of $(1,2,3)$. We show that the Hermitian matrix $W_{Φ_{t,π}}$ induced by $Φ_{t,π}$ is an optimal entanglement witness if and only if $t=1$ and $π$ is cyclic.
description: 12 pages
Improved Efficiency Using aMultiple Mesh Technique
Creators: name: Proft, Jennifer
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018

description: Objectives of Multiple Mesh Technique:

Increase accuracy and time efficiency of ADCIRC simulations

Increased time efficiency
Each simulation finishes faster
Faster real-time forecasts as a storm approaches the coast
Faster completion of storm suite simulations for long-term planning

Accuracy
Add more storm simulations and/or mesh resolution in the same overall time
Use ensembles for real-time forecasts, add storm suites for long-term planning
Increase resolution in targeted regions
title: Sojourners Undergraduate Journal of Sociology, Vol. 12 No. 1 (2021): Sojourners Volume 12-13
title: Sojourners Volume 12-13
titleType: AlternativeTitle
Creators: name: Sojourners Undergraduate Journal Of Sociology
Publisher: name: Sojourners Undergraduate Journal of Sociology
Year: 2021

description: Racialized People in the Spotlight: Public discourses about racism in Germany...284-312 Marching for Our Lives, Not Yours: An analysis of frames, news coverage, and the March for Our Lives movement...265-283 Urban Beardsmen in the Field of Production: Hipster enterprise as defensive class formation...226-264 The Elusiveness of being a “Good Mother” through the Feeding of the Child: Exploring mothering through feeding the baby...198-225 Who Participates in Zero Waste?: Facilitators of and barriers to participation in the Zero Waste movement...185-197 Unequal Treatment: The effect of social position on patient-provider interactions...172-184 Deliberations of an Ethically Uneasy Student and Research Assistant in Vancouver’s Downtown Eastside...155-171 LGBTQ+ Venues in London: An investigation into the socio-economic, technological, and cultural drivers of nightlife decline....110-154 “At least we’re in Canada”: A critical perspective applying Du Bois and Simmel to Black African students' identity experiences in Canadian universities...92-109 Constructing Tent City: Media representations of Oppenheimer Park...78-91 Let’s Talk About Sex (Work): An analysis of the criminalization of sex work in Canada...66-77 Marriage Plans: A study of marital expectations of 19-24-year-old women...40-65 Social Media and the Global Climate Strike: A tool for youth climate change activists and politicians...18-39 Framing Rationality and Emotionality in Wet'suwet'en Protests...1-17
title: Методологическое и программное обеспечение высокотехнологичных рабочих мест для проектирования антенн и проведения расчетов электромагнитной совместимости и безопасности
Creators: name: ., В. Ю. Аронов – к.т.н., начальник отдела, АО «Самарское инновационное предприятие радиосистем» (г. Самара) E-mail: avy@siprs.ru А. Л. Бузов – д.т.н., профессор, генеральный директор,  АО «Самарское инновационное предприятие радиосистем» (г. Самара) E-mail: buzov@siprs.ru М. А. Бузова – д.т.н., гл. науч. сотрудник, АО «Самарское инновационное предприятие радиосистем» (г. Самара) E-mail: bma@siprs.ru Ю. И. Кольчугин – к.т.н., директор НТЦ информационно-телекоммуникационных технологий, АО «Самарское инновационное предприятие радиосистем» (г. Самара) E-mail: kyi@siprs.ru
Publisher: name: Издательство Радиотехника
Year: 2019

description: Постановка проблемы. В современных условиях процессы моделирования и проектирования антенн, а также анализа электромагнитной совместимости и безопасности невозможно себе представить без соответствующего методологического и программного обеспечения, которым оснащаются рабочие места разработчиков оборудования. От его выбора напрямую зависит качество получаемой продукции.
Цель. Проанализировать существующее методологическое и программное обеспечение для проектирования антенн и решения задач анализа электромагнитной совместимости и безопасности.
Результаты. Представлены конкретные варианты методов и средств проектирования антенн и анализа электромагнитной совместимости и безопасности.
Практическая значимость. Приведенные примеры методов моделирования антенн и соответствующих программных средств позволят разработчикам антенн пользоваться в своей непосредственной деятельности современными адекватными средствами.
From dynamical systems to renormalization
Creators: name: Menous, Frederic
Publisher: name: arXiv
Year: 2013
Subjects: subject: Dynamical Systems (math.DS)
subject: Combinatorics (math.CO)
subject: Quantum Physics (quant-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We study in this paper logarithmic derivatives associated to derivations on graded complete Lie algebra, as well as the existence of inverses. These logarithmic derivatives, when invertible, generalize the exp-log correspondence between a Lie algebra and its Lie group. Such correspondences occur naturally in the study of dynamical systems when dealing with the linearization of vector fields and the non-linearizability of a resonant vector fields corresponds to the non-invertibility of a logarithmic derivative and to the existence of normal forms. These concepts, stemming from the theory of dynamical systems, can be rephrased in the abstract setting of Lie algebra and the same difficulties as in perturbative quantum field theory (pQFT) arise here. Surprisingly, one can adopt the same ideas as in pQFT with fruitful results such as new constructions of normal forms with the help of the Birkhoff decomposition. The analogy goes even further (locality of counter terms, choice of a renormalization scheme) and shall lead to more interactions between dynamical systems and quantum field theory.
title: On change-point perspectives in multiple testing and weak signal inference
Creators: name: Kostic, Anica
Publisher: name: London School of Economics and Political Science (LSE)
Year: 2022

description: This thesis studies the problem of multiple testing from the change-point perspective, and the problem of inference in the Gaussian sequence model. In the first part of the thesis, we propose a method for estimating the proportion of false null hypotheses among a large number of independently tested hypotheses. The idea is to consider the sequence of sorted p-values as an approximately piecewise linear function with one change-point in slope. We propose an estimator for this change point, which can be further used in combination with Storey’s family of estimators to get the estimator of the false null proportion. Our proposed estimator is conservative and we provide consistency results using the tools from the theory of quantile processes. We compare our estimator to various others proposed in the literature through simulations. Secondly, building on the ideas from the first part, we consider possible applications of some recent multiple change-point methods in multiple testing. We propose to use algorithms for estimating multiple change-points in mean on the sequence of p-values spacings, thus approximating the local FDR with a piecewise constant function. This naturally divides p-values into groups based on their significance. Additionally, we highlight some lesser-known existing change-point interpretations of the global testing methods. Lastly, we propose a thresholding method for inference in the Gaussian sequence model. We analyse it from both multiple testing and signal estimation perspective, and consider its asymptotic behaviour. Starting from the full sequence of values, the method sequentially excludes the largest values one by one, until the remaining values resemble noise. The idea is to consider values in groups in order to retain more signals in the case when signal is weak but dense, shared among many coordinates. We consider a possible application in the change point literature.
title: Особенности алгоритмизации нейросетевого управления в адаптивных антенных решетках
Creators: name: ., О. С. Литвинов – д.ф.-м.н., профессор, кафедра физики, МГТУ им. Н.Э. Баумана E-mail: oleglitv@mtu-net.ru Д. В. Муродьянц – студент, кафедра физики, МГТУ им. Н.Э. Баумана E-mail: dmitriy1994.94@mail.ru В. С. Борута – к.ф.-м.н., доцент, кафедра физики, МГТУ им. Н.Э. Баумана Б. Е. Винтайкин – д.ф.-м.н., профессор, кафедра физики, МГТУ им. Н.Э. Баумана
Publisher: name: Издательство Радиотехника
Year: 2019

description: Постановка проблемы. При фазовом управлении адаптивной антенной решеткой (ААР), в котором накладывается ограничение на изменение амплитуды весовых коэффициентов (ВК) для уменьшения потерь мощности полезного сигнала, задача выбора оптимальных ВК не имеет аналитического решения, в связи с чем решено использовать нейронную сеть в качестве блока управления ААР.
Цель. Провести обучение нейронной сети в качестве блока управления фазовращателями ААР, которая максимизирует отношение мощности полезного сигнала к шуму на выходе с минимальными потерями мощности полезного сигнала при различных спектрах широкополосной помехи.
Результаты. Промоделирована работа ААР на нейросетевом фазовом управлении. Исследована зависимость отношения сигнал/шум на выходе ААР и зависимость отношения мощности полезного сигнала на входе к мощности полезного сигнала на выходе ААР от угла прихода широкополосной помехи, а также вида ее спектра.
Практическая значимость. Полученные результаты могут использоваться в задачах радиолокации и навигации быстро движущихся объектов.
title: Механизм диффузионных процессов в катодном материале со стабилизирующей металлической пленкой под радиационным воздействием электронов, ионов и атомов
Creators: name: ., М.Н. Есаулов – к.т.н., доцент, Национальный исследовательский ядерный университет «МИФИ» E-mail: mesaulov@mail.ru А.В. Челенко – к.т.н., доцент, Калужский филиал МГТУ им. Н.Э. Баумана E-mail: apererva@yandex.ru В.В. Максимов – ст. преподаватель, Калужский филиал МГТУ им. Н.Э. Баумана E-mail: maksimov_w@mail.ru Н.И. Пчелинцева – к.т.н., доцент, Калужский филиал МГТУ им. Н.Э. Баумана E-mail: pchelintseva.n@yandex.ru
Publisher: name: Издательство Радиотехника
Year: 2019

description: Постановка проблемы. Современные электронные системы, встроенные в космические объекты, подвергаются воздействию различных видов облучения при их эксплуатации. Поэтому проблема обеспечения высокой устойчивости к радиационным воздействиям различных элементов и материалов, на основе которых они созданы, является весьма актуальной.
Цель. Установить механизм процессов, происходящих в новых и модернизированных элементах электронных систем, в условиях радиационного воздействия.
Результаты. Показано, что применение в составе материалов для источников электронов (катодов) многокомпонентных композиций, изготовленных из исходных порошков вторичного производства, не снижает их эмиссионные свойства в условиях радиационного воздействия. Уточнен механизм диффузионных процессов в многокомпонентном катодном материале при бомбардировке ускоренными частицами.
Практическая значимость. Предложенная физическая модель позволяет оптимизировать технологические режимы при организации производства новых катодов на основе систем, содержащих вторичные исходные материалы.