cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
QCD ghost dark energy cannot (even roughly) explain the main features of the accepted cosmological paradigm
Creators: name: Garcia-Salcedo, Ricardo
name: Gonzalez, Tame
name: Quiros, Israel
name: Thompson-Montero, Michael
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We explore the whole phase space of the so called Veneziano/QCD ghost dark energy models where the dynamics of the inner trapping horizon is ignored and also the more realistic models where the time-dependence of the horizon is taken into consideration. We pay special attention to the choice of phase space variables leading to bounded and compact phase space so that no critical point of physical interest is missing. It is demonstrated that ghost dark energy is not a suitable candidate to explain the presently accepted cosmological paradigm since no critical point associated with matter dominance is found in the physical phase space of the model. A transient stage of matter dominance -- responsible for the observed amount of cosmic structure -- is an essential ingredient of the accepted cosmological paradigm. The above drawback is in addition to the well known problem with classical instability against small perturbations of the background density originated from negativity of the sound speed squared.
description: 12 pages, 3 eps figures. Remarks on phase space analysis substantially improved. Minor corrections to the text and title. This version matches the one published in PRD
Prevention of cyberattacks in WSN and packet drop by CI framework and information processing protocol using AI and Big Data
Creators: name: S, Shreyanth
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cryptography and Security (cs.CR)
subject: Machine Learning (cs.LG)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: As the reliance on wireless sensor networks (WSNs) rises in numerous sectors, cyberattack prevention and data transmission integrity become essential problems. This study provides a complete framework to handle these difficulties by integrating a cognitive intelligence (CI) framework, an information processing protocol, and sophisticated artificial intelligence (AI) and big data analytics approaches. The CI architecture is intended to improve WSN security by dynamically reacting to an evolving threat scenario. It employs artificial intelligence algorithms to continuously monitor and analyze network behavior, identifying and mitigating any intrusions in real time. Anomaly detection algorithms are also included in the framework to identify packet drop instances caused by attacks or network congestion. To support the CI architecture, an information processing protocol focusing on efficient and secure data transfer within the WSN is introduced. To protect data integrity and prevent unwanted access, this protocol includes encryption and authentication techniques. Furthermore, it enhances the routing process with the use of AI and big data approaches, providing reliable and timely packet delivery. Extensive simulations and tests are carried out to assess the efficiency of the suggested framework. The findings show that it is capable of detecting and preventing several forms of assaults, including as denial-of-service (DoS) attacks, node compromise, and data tampering. Furthermore, the framework is highly resilient to packet drop occurrences, which improves the WSN's overall reliability and performance
Additional file 1 of Data quality considerations for evaluating COVID-19 treatments using real world data: learnings from the National COVID Cohort Collaborative (N3C)
Creators: name: Sidky, Hythem
name: Young, Jessica C.
name: Girvin, Andrew T.
name: Lee, Eileen
name: Shao, Yu Raymond
name: Hotaling, Nathan
name: Michael, Sam
name: Wilkins, Kenneth J.
name: Setoguchi, Soko
name: Funk, Michele Jonsson
Publisher: name: figshare
Year: 2023
Subjects: subject: Information Systems
subject: FOS: Computer and information sciences

description: Additional file 1: Table S1. List of terms used to create ECMO concept set. Table S2. List of terms used to create invasive mechanical ventilation concept set.
Drug interactions between hormonal contraceptives and antiretrovirals
Creators: name: Tepper, Naomi K.
name: Nanda, Kavita
name: Robinson, Jennifer
name: Gaffield, Mary E.
name: Stuart, Gretchen S.
name: Gray, Andrew L.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: To summarize published evidence on drug interactions between hormonal contraceptives and antiretrovirals.
Scalar and fermionic vacuum currents in de Sitter spacetime with compact dimensions
Creators: name: Bellucci, S.
name: Saharian, A. A.
name: Nersisyan, H. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Vacuum expectation values (VEVs) of the current densities for charged scalar and Dirac spinor fields are investigated in (D+1)-dimensional de Sitter (dS) spacetime with toroidally compactified spatial dimensions. Along compact dimensions we impose quasiperiodicity conditions with arbitrary phases. In addition, the presence of a classical constant gauge field is assumed. The VEVs of the charge density and of the components for the current density along noncompact dimensions vanish. The gauge field leads to Aharonov-Bohm-like oscillations of the components along compact dimensions as functions of the magnetic flux. For small values of the comoving length of a compact dimension, compared with the dS curvature scale, the current density is related to the corresponding current in the Minkowski spacetime by a conformal relation. For large values of the comoving length and for a scalar field, depending on the mass of the field, two different regimes are realized with the monotonic and oscillatory damping of the current density. For a massive spinor field, the decay of the current density is always oscillatory. In supersymmetric models on the background of Minkowski spacetime with equal number of scalar and fermionic degrees of freedom and with the same phases in the periodicity conditions, the total current density vanishes due to the cancellation between the scalar and fermionic parts. The background gravitational field modifies the current densities for scalar and fermionic fields in different ways and for massive fields there is no cancellation in the dS spacetime.
description: 19 pages, 4 figures, discussion and references added
Additional file 1 of Lean or diabetic subtypes predict increased all-cause and disease-specific mortality in metabolic-associated fatty liver disease
Creators: name: Chung, Goh Eun
name: Yu, Su Jong
name: Yoo, Jeong-Ju
name: Cho, Yuri
name: Lee, Kyu-na
name: Shin, Dong Wook
name: Kim, Donghee
name: Kim, Yoon Jun
name: Yoon, Jung-Hwan
name: Han, Kyungdo
name: Cho, Eun Ju
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: Computational Biology

description: Additional file 1: Table S1. All-cause and cause-specific mortality by MAFLD subgroup. Table S2. All-cause and cause-specific mortality by MAFLD subgroup with sex-specific FLI cut-offs. Table S3. Baseline characteristics of the study population with aged ≥60 years. Table S4. All-cause and cause-specific mortality by MAFLD subgroup in individuals with aged ≥60 years.
Accuracy in strategy imitations promotes the evolution of fairness in the spatial ultimatum game
Creators: name: Szolnoki, Attila
name: Perc, Matjaz
name: Szabo, Gyorgy
Publisher: name: arXiv
Year: 2012
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Spatial structure has a profound effect on the outcome of evolutionary games. In the ultimatum game, it leads to the dominance of much fairer players than those predicted to evolve in well-mixed settings. Here we show that spatiality leads to fair ultimatums only if the intervals from which the players are able to choose how much to offer and how little to accept are sufficiently fine-grained. Small sets of discrete strategies lead to the stable coexistence of the two most rational strategies in the set, while larger sets lead to the dominance of a single yet not necessarily the fairest strategy. The fairest outcome is obtained for the most accurate strategy imitation, that is in the limit of a continuous strategy set. Having a multitude of choices is thus crucial for the evolution of fairness, but not necessary for the evolution of empathy.
description: 6 two-column pages, 5 figures; accepted for publication in Europhysics Letters
Leemans, Grieksche Opschriften uit Klein-Azië in den laatsten Tijd voor het Rijks-Museum van Oudheden te Leiden aangewonnen
Creators: name: Wiedemann, Alfred
Publisher: name: Bonner Jahrbücher
Year: 2018

description: Rezension zu: Leemans, Grieksche Opschriften uit Klein-Azië in den laatsten Tijd voor het Rijks-Museum van Oudheden te Leiden aangewonnen. Met Platen. Amsterdam 1890 (aus Letterk. Verh. der Koninkl. Akademie. Deel XIX).
description: Bonner Jahrbücher, Bd. 89 (1890): Jahrbücher des Vereins von Altertumsfreunden im Rheinlande
Defining the HIV pre-exposure prophylaxis care continuum
Creators: name: Patel, Rupa
name: Chan, Philip A.
name: Oldenburg, Catherine E.
name: Nunn, Amy S.
name: Mayer, Kenneth H.
name: Mimiaga, Matthew
name: Brinkley-Rubinstein, Lauren
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: Pre-exposure prophylaxis (PrEP) is an effective HIV prevention strategy. There is little scientific consensus about how to measure PrEP program implementation progress. We draw on several years of experience in implementing PrEP programs and propose a PrEP continuum of care that includes: (1) identifying individuals at highest risk for contracting HIV, (2) increasing HIV risk awareness among those individuals, (3) enhancing PrEP awareness, (4) facilitating PrEP access, (5) linking to PrEP care, (6) prescribing PrEP, (7) initiating PrEP, (8) adhering to PrEP, and (9) retaining individuals in PrEP care. We also propose four distinct categories of PrEP retention in care that include being: (1) indicated for PrEP and retained in PrEP care, (2) indicated for PrEP and not retained in PrEP care, (3) no longer indicated for PrEP, and (4) lost to follow-up for PrEP care. This continuum of PrEP care creates a framework that researchers and practitioners can use to measure PrEP awareness, uptake, adherence, and retention. Understanding each point along the proposed continuum of PrEP care is critical for developing effective PrEP interventions and for measuring public health progress in PrEP program implementation.
Fat cosmic ray tracks in charge-coupled devices
Creators: name: Grosson, Theodore A.
name: Nomerotski, Andrei
name: Collaboration, The LSST Dark Energy Science
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Cosmic rays are particles from the upper atmosphere which often leave bright spots and trails in images from telescope CCDs. We investigate so-called ``fat" cosmic rays seen in images from Vera C. Rubin Observatory and the Subaru Telescope. These tracks are much wider and brighter than typical cosmic ray tracks, and therefore are more capable of obscuring data in science images. By understanding the origins of these tracks, we can better ensure that they do not interfere with on-sky data. We compare the properties of these tracks to simulated and theoretical models in order to identify both the particles causing these tracks as well as the reason for their excess spread. We propose that the origin of these tracks is cosmic ray protons, which deposit much greater charge in the CCDs than typical cosmic rays due to their lower velocities. The generated charges then repel each other while drifting through the detector, resulting in a track which is much wider than typical tracks.
description: 13 pages, 7 figures. Accepted to JATIS
Increased glucose transporter-1 expression on intermediate monocytes from HIV-infected women with subclinical cardiovascular disease
Creators: name: Fischl, Margaret A.
name: Young, Mary A.
name: Anzinger, Joshua J.
name: Heath, Sonya L.
name: Crowe, Suzanne M.
name: Nowicki, Marek J.
name: Tien, Phyllis C.
name: Kizer, Jorge R.
name: Palmer, Clovis S.
name: Durkin, Helen G.
name: Landay, Alan L.
name: Golub, Elizabeth T.
name: Martinson, Jefferey
name: Butterfield, Tiffany R.
name: Titanji, Kehmia
name: Michelle, A. Floris-Moore
name: Hanna, David B.
name: Kaplan, Robert C.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: People living with HIV (PLWH) have chronic immune activation and increased cardiovascular disease (CVD) risk. Activation of monocytes and T lymphocytes causes up-regulation of glucose transporter-1 (GLUT1) for efficient function. PLWH have an increased percentage of GLUT1-expressing monocytes and T lymphocytes, but it is unclear if these cells are associated with CVD. We evaluated expression of GLUT1 and CD38 on monocyte and T lymphocyte populations from HIV-infected women with subclinical CVD.
Resonance results in 7 TeV pp collisions with the ALICE detector at the LHC
Creators: name: Venaruzzo, Massimo
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Short lived hadronic resonances are a very important tool for the study of the dynamics of the matter produced in heavy-ion collisions since they should be sensitive to the medium properties such as temperature, density and expansion velocity. In particular they are sensitive to the time span between chemical and kinetic freeze-out of the hadronic phase of the fireball. The study of resonances in 7 TeV pp collisions is useful both in order to constrain QCD inspired models and to form a baseline for the production in heavy-ion collisions. The resonances $\mathrm{K}^{*0}$(892), $\phiup$(1020), $Σ(1385)^{\pm}$, $Λ$(1520), $Ξ$(1530) are reconstructed from their hadronic decay using data collected by the ALICE detector in pp collisions at 7 TeV. Their yields and $p_{\mathrm{T}}$ spectra are compared with Monte Carlo models such as PHOJET and different PYTHIA tunes.
description: 4 pages, 11 figures, 16th International Conference in Quantum ChromoDynamics (QCD 2012)
Disk-planets interactions and the diversity of period ratios in Kepler's multi-planetary systems
Creators: name: Baruteau, Clement
name: Papaloizou, John C. B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Kepler mission is dramatically increasing the number of planets known in multi-planetary systems. Many adjacent planets have orbital period ratios near resonant values, with a tendency to be larger than required for exact first-order mean-motion resonances. This intriguing feature has been shown to be a natural outcome of orbital circularization of resonant planetary pairs due to star-planet tidal interactions. However, this feature holds in multi-planetary systems with periods longer than ten days, for which tidal circularization is unlikely to provide efficient divergent evolution of the planets orbits. Gravitational interactions between planets and their parent protoplanetary disk may instead provide efficient divergent evolution. For a planet pair embedded in a disk, we show that interactions between a planet and the wake of its companion can reverse convergent migration, and significantly increase the period ratio from a near-resonant value. Divergent evolution due to wake-planet interactions is particularly efficient when at least one of the planets opens a partial gap around its orbit. This mechanism could help account for the diversity of period ratios in Kepler's multiple systems comprising super-Earth to sub-jovian planets with periods greater than about ten days. Diversity is also expected for planet pairs massive enough to merge their gap. The efficiency of wake-planet interactions is then much reduced, but convergent migration may stall with a variety of period ratios depending on the density structure in the common gap. This is illustrated for the Kepler-46 system, for which we reproduce the period ratio of Kepler-46b and c.
description: 15 pages, 11 figures, accepted for publication in ApJ
The per-protocol effect of immediate versus deferred antiretroviral therapy initiation
Creators: name: Klinker, Hartwig
name: Phillips, Andrew N.
name: Agan, Brian K.
name: Law, Matthew
name: Chu, Haitao
name: Babiker, Abdel
name: Logan, Roger
name: Lundgren, Jens D.
name: Neaton, James D.
name: Lodi, Sara
name: Cole, Stephen R.
name: Sharma, Shweta
name: Hernán, Miguel A.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: The START trial found a lower risk of a composite clinical outcome in HIV-positive individuals assigned to immediate initiation of antiretroviral therapy (ART) compared with those assigned to deferred initiation. However, 30% of those assigned to deferred initiation started ART earlier than the protocol specified. To supplement the published intention-to-treat effect estimates, here we estimate the per-protocol effect of immediate versus deferred ART initiation in START.
Structure-Aware DropEdge Towards Deep Graph Convolutional Networks
Creators: name: Han, Jiaqi
name: Huang, Wenbing
name: Rong, Yu
name: Xu, Tingyang
name: Sun, Fuchun
name: Huang, Junzhou
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: It has been discovered that Graph Convolutional Networks (GCNs) encounter a remarkable drop in performance when multiple layers are piled up. The main factor that accounts for why deep GCNs fail lies in over-smoothing, which isolates the network output from the input with the increase of network depth, weakening expressivity and trainability. In this paper, we start by investigating refined measures upon DropEdge -- an existing simple yet effective technique to relieve over-smoothing. We term our method as DropEdge++ for its two structure-aware samplers in contrast to DropEdge: layer-dependent sampler and feature-dependent sampler. Regarding the layer-dependent sampler, we interestingly find that increasingly sampling edges from the bottom layer yields superior performance than the decreasing counterpart as well as DropEdge. We theoretically reveal this phenomenon with Mean-Edge-Number (MEN), a metric closely related to over-smoothing. For the feature-dependent sampler, we associate the edge sampling probability with the feature similarity of node pairs, and prove that it further correlates the convergence subspace of the output layer with the input features. Extensive experiments on several node classification benchmarks, including both full- and semi- supervised tasks, illustrate the efficacy of DropEdge++ and its compatibility with a variety of backbones by achieving generally better performance over DropEdge and the no-drop version.
description: IEEE Transactions on Neural Networks and Learning Systems, 2023
Contested Foodways: Pericapitalist Strategies for Care and World-Making of Mexican Farmworkers in Wisconsin Dairies
Creators: name: D'Anieri, Sophie
Publisher: name: University of Chicago
Year: 2021
Subjects: subject: Farmworkers
subject: Dairy
subject: Migration
subject: Labor
subject: Agriculture
subject: Food
subject: Care

description: This thesis studies the lives of Mexican migrant farmworkers in Southwest Wisconsin dairies. Upon migration into the U.S. agricultural system, Mexican migrants face poverty, food insecurity, separation from families, a discriminatory migration system, and a long history of racialized agricultural labor. Despite this, I find that these Mexican farmworkers in Wisconsin negotiate capitalist oppression through the production, preparation, sharing, and consumption of food. By exploring relationships to food, I first reveal the ways that farmworkers contend with the heightening of poverty, scarcity, and precarity of the (post)neoliberal era. Next, I argue that farmworkers create spaces within and beside capitalism that enable the (re)making of worlds, strategies of care, and relationships of solidarity. Finally, I contend that these practices facilitate not just their survival within exploitative systems, but also their ability to flourish. Ultimately, this thesis reveals the unique ways that Mexican migrants in Wisconsin dairies negotiate relationships to food and practices of gardening and cooking in order to make an (often) undocumented, diasporic life livable.
Additional file 1 of Effectiveness of a 6-week specific rehabilitation program combining education and exercises on walking capacity in patients with lumbar spinal stenosis with neurogenic claudication: a randomized controlled clinical trial protocol
Creators: name: Houle, Mariève
name: Tétreau, Charles
name: Châtillon, Claude-Édouard
name: Marchand, Andrée-Anne
name: Descarreaux, Martin
Publisher: name: figshare
Year: 2023
Subjects: subject: Space Science
subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer

description: Additional file 1.
An Exact Relationship Between Invasion Probability and Endemic Prevalence for Markovian SIS Dynamics on Networks
Creators: name: Wilkinson, Robert R.
name: Sharkey, Kieran J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Probability (math.PR)
subject: FOS: Biological sciences
subject: FOS: Mathematics

description: Understanding models which represent the invasion of network-based systems by infectious agents can give important insights into many real-world situations, including the prevention and control of infectious diseases and computer viruses. Here we consider Markovian susceptible-infectious-susceptible (SIS) dynamics on finite strongly connected networks, applicable to several sexually transmitted diseases and computer viruses. In this context, a theoretical definition of endemic prevalence is easily obtained via the quasi-stationary distribution (QSD). By representing the model as a percolation process and utilising the property of duality, we also provide a theoretical definition of invasion probability. We then show that, for undirected networks, the probability of invasion from any given individual is equal to the (probabilistic) endemic prevalence, following successful invasion, at the individual (we also provide a relationship for the directed case). The total (fractional) endemic prevalence in the population is thus equal to the average invasion probability (across all individuals). Consequently, for such systems, the regions or individuals already supporting a high level of infection are likely to be the source of a successful invasion by another infectious agent. This could be used to inform targeted interventions when there is a threat from an emerging infectious disease.
description: 16 pages, 5 figures. Supplementary data available with published version at http://dx.doi.org/10.1371/journal.pone.0069028
Differences in acute retroviral syndrome by HIV-1 subtype in a multicentre cohort study in Africa
Creators: name: Inambao, Mubiana
name: Fast, Patricia E.
name: Gilmour, Jill
name: Powers, Kimberly A.
name: Anzala, Omu
name: Kilembe, William
name: Sanders, Eduard J.
name: Lakhi, Shabir
name: Price, Matthew A.
name: Karita, Etienne
name: Kamali, Anatoli
name: Bekker, Linda-Gail
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: Symptoms of acute retroviral syndrome (ARS) may be used to identify patients with acute HIV-1 infection who seek care. ARS symptoms in African adults differ by region. We assessed whether reporting of ARS was associated with HIV-1 subtype in a multicentre African cohort study representing countries with predominant HIV-1 subtypes A, C, and D.
title: Синтез неосесимметричной двухзеркальной антенны с прямоугольной апертурой
Creators: name: Ермолаев , С. В.
Publisher: name: Издательство Радиотехника
Year: 2020

description: Постановка проблемы. Рассмотрена актуальная задача синтеза неосесимметричной двухзеркальной антенны с прямоугольной апертурой.

Цель. Рассчитать поверхности зеркал неосесимметричной двухзеркальной антенны с прямоугольной апертурой на основе соотношений, полученных в работе [1].

Результаты. Приведен пример расчета поверхности рефлектора и контррефлектора двухзеркальной антенной системы типа Грегори с отношением сторон прямоугольной апертуры 1:10 с равномерным распределением поля в апертуре. Проведено сравнение электродинамических характеристик антенн с прямоугольной и эллиптической апертурой.

Практическая значимость. Показано, что рассчитанные по предложенной методике профили зеркал обеспечивают хорошие электродинамические характеристики антенн.
On the parametrization of solutions of the Yang--Baxter equations
Creators: name: Hietarinta, J.
name: Viallet, C.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Quantum Algebra (math.QA)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We study all five-, six-, and one eight-vertex type two-state solutions of the Yang-Baxter equations in the form $A_{12} B_{13} C_{23} = C_{23} B_{13} A_{12}$, and analyze the interplay of the `gauge' and `inversion' symmetries of these solution. Starting with algebraic solutions, whose parameters have no specific interpretation, and then using these symmetries we can construct a parametrization where we can identify global, color and spectral parameters. We show in particular how the distribution of these parameters may be changed by a change of gauge.
description: 19 pages in LaTeX
title: Сверхширокополосные составные дипольные антенны
Creators: name:  Козлов, А. Л.
name: Лось, В. Ф.
name: Рожков, С. С.
name: Синьков, Ю. А.
Publisher: name: Издательство Радиотехника
Year: 2020

description: Постановка проблемы. Рассмотрены варианты сравнительно простого, пригодного для массового изготовления способа расширения полосы рабочих частот дипольных антенн в интересах удовлетворения в одной конструкции требованиям различных существующих и перспективных информационных систем, характеризующихся использованием широких полос частот или отдельных дискретных частотных интервалов в широком диапазоне. Способ основан на известном свойстве почти периодической вариации знака мнимой части входной проводимости диполей при линейном изменении их длины или рабочей частоты и объединении в одной антенне двух (основного и дополнительного) параллельно соединенных диполей разной длины.

Цель. Исследовать различные формы диполей, определить взаимное расположение и геометрические размеры основного и дополнительного диполей, при которых достигаются относительные ширины рабочих полос составных дипольных антенн по критерию КСВН ≤ 2, превышающие достигнутую ранее авторами [2] величину 131%.

Результаты. Определены геометрические размеры составных дипольных антенн с прямоугольным основным диполем и различными формами вспомогательных диполей, для которых вычислены зависимости от частоты КСВН и входного импеданса при возбуждении антенны фидером с характеристическим сопротивлением 50 и 75 Ом. Выделены варианты составных антенн, значения относительной ширины полосы у которых равны 135% и 150% при возбуждении 50- и 75-омным фидером соответственно. Приведена также типичная зависимость КПД рассмотренных антенн от частоты.

Практическая значимость. Исследованные составные диполи с достигнутыми ширинами рабочих полос могут оказаться привлекательными антеннами для использования в массовой аппаратуре перспективных информационных систем.
title: Трехдиапазонная микрополосковая антенна круговой поляризации для бортовой и наземной аппаратуры спутниковой навигации
Creators: name: Илларионов, И. А.
name: Варенцов, Е. Л.
name: Дудкин, М. И.
Publisher: name: Издательство Радиотехника
Year: 2020

description: Постановка проблемы. Микрополосковые антенны (МПА) находят широкое применение в приемной аппаратуре систем спутниковой навигации GPS и ГЛОНАСС. Это обусловлено как конструктивными преимуществами этого типа антенн (крайне малой высотой МПА по отношению к длине волны), так и достижимыми характеристиками излучения.

Цель. Разработать и реализовать малогабаритную МПА круговой поляризации с раздельными входами на диапазон L1 ГЛОНАСС и диапазоны L2, L3 ГЛОНАСС.

Результаты. Приведены результаты проектирования и исследования трехдиапазонной антенны спутниковой навигации. В антеннах использована трехъярусная топология микрополосковых печатных излучателей с двумя входами. Показано, что применение в антенне диэлектриков в качестве подложек первых двух ярусов с отношением относительных диэлектрических проницаемостей примерно 1,6 обеспечивает достижение широкой полосы (не менее 6%) по уровню коэффициента эллиптичности 3 дБ. Отмечено, что прочность конструкции предлагаемой антенны к механическим и климатическим воздействующим факторам обеспечивается применением конструкционных диэлектрических материалов.

Практическая значимость. Результаты, полученные в работе, могут быть использованы при проектировании бортовых антенн и антенных решеток аппаратуры спутниковой навигации, а также в других областях радиотехники, в которых необходимы широкая рабочая полоса частот антенн и круговая поляризация излучения.
Linear Optics Simulation of Non-Markovian Quantum Dynamics
Creators: name: Chiuri, Andrea
name: Greganti, Chiara
name: Mazzola, Laura
name: Paternostro, Mauro
name: Mataloni, Paolo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The simulation of quantum processes is a key goal for the grand programme aiming at grounding quantum technologies as the way to explore complex phenomena that are inaccessible through standard, classical calculators. Some interesting steps have been performed in this direction and this scenario has recently been extended to open quantum evolutions, marking the possibility to investigate important features of the way a quantum system interacts with its environment. Here we demonstrate experimentally the (non-)Markovianity of a process where system and environment are coupled through a simulated transverse Ising model. By engineering the evolution in a fully controlled photonic quantum simulator, we assess and demonstrate the role that system-environment correlations have in the emergence of memory effects.
description: 4+2 pages, 4 figures, RevTeX4
title: Микрополосковая антенна ГНСС этажерочного типа с встречным питанием антенных элементов
Creators: name:  Бойко, С. Н.
name: Исаев, А. В.
name: Марьянов, В. Б.
name: Трухачев, И. М.
Publisher: name: Издательство Радиотехника
Year: 2020

description: Постановка проблемы. Действующие в настоящий момент системы глобальной спутниковой навигации (ГНСС) ГЛОНАСС и GPS работают в частотных диапазонах L1 и L2, центральные частоты которых разнесены в 1,28 раза. Однако получение малого разноса рабочих частот в микрополосковых антеннах плоскостного типа представляется очень сложной задачей, в особенности если требуются идентичные по форме диаграммы направленности (ДН) в диапазонах частот L1 и L2. Микрополосковые антенны этажерочного типа (МПАЭТ) лишены этого недостатка, то есть в них легче реализовать разнос рабочих частот менее чем в 1,5 раза. Вместе с тем проблемным вопросом проектирования МПАЭТ с традиционным способом питания является присутствие сильной связи между смежными антенными элементами МПАЭТ, что приводит к взаимному проникновению сигналов в тракты приемных каналов и искажению формы ДН в диапазонах L1 и L2.

Цель. Уменьшить взаимное влияние антенных элементов в МПАЭТ за счет изменения способа их питания с прямого на встречный.

Результаты. Предложен двухдиапазонный L1, L2 навигационный антенный модуль, состоящий из микрополосковой антенны этажерочного типа с встречным питанием антенных элементов и двухканального малошумящего усилителя с элементами защиты по входу. Габаритные размеры антенного модуля составили Ø140×85 мм в одном варианте исполнения и 101×101×62 мм во втором варианте. Получены следующие параметры антенны: коэффициент усиления антенного элемента в зените – 6,5 дБ в диапазоне L1 и 5,2 дБ в диапазоне L2; коэффициент шума МШУ в рабочих диапазонах частот – не более 2 дБ; коэффициент усиления модуля в зените в рабочих диапазонах частот – не менее 30 дБ; подавление внеполосных помех при отстройке ±65 МГц от центральных частот диапазонов частот L1, L2 – не менее 50 дБ; ток потребления – не более 60 мА.

Практическая значимость. Достигнута развязка раздельных выходов МПАЭТ не хуже 24 дБ и полная идентичность формы ДН в диапазонах частот L1, L2, что позволяет принимать и отдавать в обработку в навигационный приемник полностью идентичные для диапазонов L1 и L2 наборы спутниковых сигналов.
Optimized boundary driven flows for dynamos in a sphere
Creators: name: Khalzov, I. V.
name: Brown, B. P.
name: Cooper, C. M.
name: Weisberg, D. B.
name: Forest, C. B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We perform numerical optimization of the axisymmetric flows in a sphere to minimize the critical magnetic Reynolds number Rm_cr required for dynamo onset. The optimization is done for the class of laminar incompressible flows of von Karman type satisfying the steady-state Navier-Stokes equation. Such flows are determined by equatorially antisymmetric profiles of driving azimuthal (toroidal) velocity specified at the spherical boundary. The model is relevant to the Madison plasma dynamo experiment (MPDX), whose spherical boundary is capable of differential driving of plasma in the azimuthal direction. We show that the dynamo onset in this system depends strongly on details of the driving velocity profile and the fluid Reynolds number Re. It is found that the overall lowest Rm_cr~200 is achieved at Re~240 for the flow, which is hydrodynamically marginally stable. We also show that the optimized flows can sustain dynamos only in the range Rm_cr
Invariant bilinear differential operators
Creators: name: Grozman, Pavel
Publisher: name: arXiv
Year: 2005
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 53A55 (Primary) 53C20, 58A99 (Secondary)

description: I classified bilinear differential operators acting in the spaces of tensor fields on any real or complex manifold and invariant with respect to the diffeomorphisms in 1980. Here I give the details of the proof.
description: 49 pages, LaTeX
Changing Identities and Evolving Conceptions of Inquiry through Teacher-Driven Professional Development
Creators: name: Van Dusen, Ben
name: Ross, Mike
name: Otero, Valerie
Publisher: name: arXiv
Year: 2012
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: This STEM education study investigates the Streamline to Mastery professional development program, in which teachers work in partnership with university researchers to design professional development opportunities for themselves and for fellow teachers. Our research describes the process of teacher professional growth both through changes in agency and through a shared pursuit of an improved understanding of classroom scientific inquiry. Videos, emails, lesson reflections, survey responses, and interviews were analyzed to glean insight into changes in teacher discourse around inquiry and into their shifts in participation within the professional community they established. Implications for professional development in STEM education are discussed.
description: 15 pages, 9 figures
Additional file 1 of Geographic variation and sociodemographic correlates of prescription psychotropic drug use among children and youth in Ontario, Canada: a population-based study
Creators: name: Antoniou, Tony
name: McCormack, Daniel
name: Kitchen, Sophie
name: Pajer, Kathleen
name: Gardner, William
name: Lunsky, Yona
name: Penner, Melanie
name: Tadrous, Mina
name: Mamdani, Muhammad
name: Juurlink, David N.
name: Gomes, Tara
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1: Supplemental Fig. S1. Age and sex adjusted rates of individuals dispensed antidepressants by census division (per 1000 population). Supplemental Fig. S2. Age and sex adjusted rates of individuals dispensed stimulants by census division (per 1000 population). Supplemental Fig. S3. Age and sex adjusted rates of individuals dispensed benzodiazepines by census division (per 1000 population). Supplemental Fig. S4. Age and sex adjusted rates of individuals dispensed antipsychotics by census division (per 1000 population).
Additional file 2 of Geographic variation and sociodemographic correlates of prescription psychotropic drug use among children and youth in Ontario, Canada: a population-based study
Creators: name: Antoniou, Tony
name: McCormack, Daniel
name: Kitchen, Sophie
name: Pajer, Kathleen
name: Gardner, William
name: Lunsky, Yona
name: Penner, Melanie
name: Tadrous, Mina
name: Mamdani, Muhammad
name: Juurlink, David N.
name: Gomes, Tara
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 2: Supplemental Table 1. Baseline Variables by Drug Class. Supplemental Table 2. Small area variation analysis of psychotropic prescribing by drug class. Supplemental Table 3. Diagnosis of schizophrenia and other antipsychotic disorders or autism spectrum disorder in the 30 and 365 days preceding antipsychotic dispensing.
REVISÃO DE LITERATURA: DESGLACIAMENTO EM PESCADOS
Creators: name: Leonardo Ferreira Mota
name: Mikaela Pimenta Rodrigues
Publisher: name: Zenodo
Year: 2023

description: O trabalho a seguir tem como objetivo informar as possíveis fraudes alimentares que podem ocorrer no processamento e comercialização dos pescados que recebem o banho de glaser. O banho de glaser é um processo estratégico realizado pelas indústrias, fábricas e centros de distribuições, que visa uma melhor conservação e qualidade nos pescados, sendo, filés, postas, crustáceos e moluscos. Seguindo as normativas o glaciamento, é permitido com um limite de 12% em filés e 20% nas demais espécies. Iremos descrever e testar as fórmulas legislativas para obter o resultado esperado previsto em lei.
title: Метод радиопеленгации, основанный на измерении вектора Пойнтинга с помощью векторной антенны
Creators: name: Ашихмин, А. В.
name: Пастернак, Ю. Г.
name: Першин, П. В.
name: Рембовский, Ю. А.
Publisher: name: Издательство Радиотехника
Year: 2020

description: Постановка проблемы. Методы фазовой интерферометрии и корреляционно-интерферометрические методы, широко применяющиеся в настоящее время для радиопеленгации, имеют один общий недостаток. При наличии рассеивателей в непосредственной близости от антенной решетки искажение пространственной фазовой картины приводит к появлению существенных ошибок пеленгования. Такая ситуация характерна при размещении пеленгатора как в стационарных условиях (наличие несущей металлической мачты, молниеотводы и т.п.), так и при размещении на мобильных носителях (автомобили, летательные аппараты и т.п.). Также при размещении на носителе остро встает вопрос с полосой рабочих частот, так как размеры носителя могут существенно ограничивать базу радиопеленгатора.

Цель. Рассмотреть метод радиопеленгации, основанный на измерении всех проекций векторов напряженности электрического и магнитного поля в ряде точек пространства с помощью векторных антенн, а также провести его сравнение с корреляционно-интерферометрическим методом пеленгования.

Результаты. Представлены результаты исследования нового метода оценки угловых координат источников радиоизлучения, основанного на измерении всех проекций комплексных векторов электрической и магнитной составляющих электромагнитного поля в точке наблюдения и вычислении вектора Пойнтинга.

Практическая значимость. Путем моделирования показано, что в длинноволновой области рассеяния волн на объекте предлагаемый метод пеленгования может давать более точные результаты измерения угла места источника радиоизлучения, чем корреляционно-интерференционный метод пеленгования.
title: Квазиоптимальная пеленгация широкополосных сигналов антенной решеткой на основе методов сверхразрешения
Creators: name: Новиков, А. Н.
Publisher: name: Издательство Радиотехника
Year: 2020

description: Постановка проблемы. Одной из задач систем пространственной обработки сигналов является различение сигналов по углу падения фронта электромагнитной волны. Решение данной задачи в современных системах ограничивается пределом Рэлея. Иными словами, система способна однозначно различить два сигнала, угловое расстояние между которыми больше половины ширины главного максимума диаграммы направленности антенны. Сформировать узкий главный максимум диаграммы направленности без потери в коэффициенте направленного действия возможно только путем увеличения апертуры антенны и только до определенного предела. Существуют так называемые методы сверхразрешения, которые позволяют преодолеть предел Рэлея. Однако они разработаны только для гармонических сигналов, а в современных системах все чаще применяются широкополосные сигналы. В связи с этим проблема разделения двух близкорасположенных сигналов остается актуальной.

Цель. Разработать и исследовать возможности пространственной пеленгации широкополосных сигналов на основе методов сверхразрешения Кейпона и «теплового шума».

Результаты. Разработан квазиоптимальный метод сверхразрешения широкополосных сигналов на основе методов сверхразрешения Кейпона и «теплового шума». Отмечено, что основная идея квазиоптимальной пеленгации заключается в том, что для ограниченного числа частот спектра сигнала пеленгационный рельеф строится оптимально, а для остальных частот производится аппроксимация спектра сигнала различными функциями.

Практическая значимость. Установлено, что предложенный подход позволяет увеличить угловую разрешающую способность при одинаковой апертуре антенны на 80%.
Bulk magnetoelectricity in the hexagonal manganites and ferrites
Creators: name: Das, Hena
name: Wysocki, Aleksander L.
name: Geng, Yanan
name: Wu, Weida
name: Fennie, Craig J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Improper ferroelectricity (trimerization) in the hexagonal manganites RMnO$_3$ leads to a network of coupled structural and magnetic vortices that induce domain wall magnetoelectricity and magnetization neither of which, however, occurs in the bulk. Here we combined first-principles calculations, group-theoretic techniques, and microscopic spin models to show how the trimerization not only induces a polarization but also a bulk magnetization and bulk magnetoelectric (ME) effect. This results in the existence of a bulk linear ME vortex structure or a bulk ME coupling such that if direction of polarization reverses so does magnetization. To measure the predicted ME vortex, we suggest RMnO$_3$ under large magnetic field. We suggest a family of materials, the hexagonal RFeO$_3$ ferrites, also display the predicted phenomena in their ground state.
description: 19 pages, 11 figures, 5 tables
Do wives work when husbands migrate? : an analysis of men's migration and women's labor force participation in Mexico
Creators: name: Hamilton, Erin R., 1979-
Publisher: name: The University of Texas at Austin
Year: 2005
Subjects: Women's work
Men's migration
Mexico

description: A consistent finding of research on migrant-sending communities in Mexico is that when men migrate, women enter the paid labor force due to the space and demand created for her work in the absence of her husband (Crummet, 1987, 2001; Mummert, 1988; Kanaiaupuni 2000; Aysa and Massey 2004; D’Aubeterre 2005). Research exploring the increasing rates of women’s labor force participation over the past three decades in Mexico argues that women’s work and men’s migration are two parts of a strategic family response to poverty (Garcia and de Oliveira 1994; Parrado and Zenteno 2001). Despite their different perspectives, both agree that men’s migration is accompanied by women’s work. In this paper, I test whether that relationship exists in a national sample of Mexican households. My analysis shows that women’s work is intensified when men migrate from very rural and very urban places, but that the opposite is true in mid-sized cities
Additional file 1 of SGLT-2 inhibitors and in-stent restenosis-related events after acute myocardial infarction: an observational study in patients with type 2 diabetes
Creators: name: Marfella, Raffaele
name: Sardu, Celestino
name: D’Onofrio, Nunzia
name: Fumagalli, Carlo
name: Scisciola, Lucia
name: Sasso, Ferdinando Carlo
name: Siniscalchi, Mario
name: Marfella, Ludovica Vittoria
name: D’Andrea, Davide
name: Minicucci, Fabio
name: Signoriello, Giuseppe
name: Cesaro, Arturo
name: Trotta, Maria Consiglia
name: Frigé, Chiara
name: Prattichizzo, Francesco
name: Balestrieri, Maria Luisa
name: Ceriello, Antonio
name: Calabrò, Paolo
name: Mauro, Ciro
name: del Viscovo, Luca
name: Paolisso, Giuseppe
Publisher: name: figshare
Year: 2023
Subjects: subject: Space Science
subject: Medicine
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Marine Biology
subject: Cancer
subject: Science Policy

description: Additional file 1: Supplementary Figure 1. Risk of ISR-related MACE according to the use of different SGLT2i. Kaplan-Meier curves showing the risk of MACE in patients treated with either empagliflozin, canagliflozin, or dapagliflozin and compared with no-SGLT2i users, along with the relative values derived from Log Rank tests. No differences were observed between different drugs.