cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Very Metal-poor Stars in the Outer Galactic Bulge Found by the Apogee Survey
Creators: name: Pérez, Ana E. García
name: Cunha, Katia
name: Shetrone, Matthew
name: Majewski, Steven R.
name: Johnson, Jennifer A.
name: Smith, Verne V.
name: Schiavon, Ricardo P.
name: Holtzman, Jon
name: Nidever, David
name: Zasowski, Gail
name: Prieto, Carlos Allende
name: Beers, Timothy C.
name: Bizyaev, Dmitry
name: Ebelke, Garrett
name: Eisenstein, Daniel J.
name: Frinchaboy, Peter M.
name: Girardi, Léo
name: Hearty, Fred R.
name: Malanushenko, Elena
name: Malanushenko, Viktor
name: Meszaros, Szabolcs
name: O'Connel, Robert W.
name: Oravetz, Daniel
name: Pan, Kaike
name: Robin, Annie C.
name: Schneider, Donald P.
name: Schultheis, Mathias
name: Skrutskie, Michael F.
name: Simmonsand, Audrey
name: Wilson, John C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Despite its importance for understanding the nature of early stellar generations and for constraining Galactic bulge formation models, at present little is known about the metal-poor stellar content of the central Milky Way. This is a consequence of the great distances involved and intervening dust obscuration, which challenge optical studies. However, the Apache Point Observatory Galactic Evolution Experiment (APOGEE), a wide-area, multifiber, high-resolution spectroscopic survey within Sloan Digital Sky Survey III (SDSS-III), is exploring the chemistry of all Galactic stellar populations at infrared wavelengths, with particular emphasis on the disk and the bulge. An automated spectral analysis of data on 2,403 giant stars in twelve fields in the bulge obtained during APOGEE commissioning yielded five stars with low metallicity([Fe/H]$\le-1.7$), including two that are very metal-poor [Fe/H]$\sim-2.1$ by bulge standards. Luminosity-based distance estimates place the five stars within the outer bulge, where other 1,246 of the analyzed stars may reside. A manual reanalysis of the spectra verifies the low metallicities, and finds these stars to be enhanced in the $α$-elements O, Mg, and Si without significant $α$-pattern differences with other local halo or metal-weak thick-disk stars of similar metallicity, or even with other more metal-rich bulge stars. While neither the kinematics nor chemistry of these stars can yet definitively determine which, if any, are truly bulge members, rather than denizens of other populations co-located with the bulge, the newly-identified stars reveal that the chemistry of metal-poor stars in the central Galaxy resembles that of metal-weak thick-disk stars at similar metallicity.
description: 6 pages, 3 figures, 2 tables
BV technique for investigating 1-D interfaces
Creators: name: Dorville, Nicolas
name: Belmont, Gérard
name: Rezeau, Laurence
name: Aunai, Nicolas
name: Retinò, Alessandro
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Geophysics (physics.geo-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: To investigate the internal structure of the magnetopause with spacecraft data, it is crucial to be able to determine its normal direction and to convert the measured time series into spatial profiles. We propose here a new single-spacecraft method, called the BV method, to reach these two objectives. Its name indicates that the method uses a combination of the magnetic field (B) and velocity (V) data. The method is tested on simulation and Cluster data, and a short overview of the possible products is given. We discuss its assumptions and show that it can bring a valuable improvement with respect to previous methods.
description: submitted to JGR
Bank Aceh Syariah: Mapping Research Topics using Library Research and VOSviewer Bibliometrics
Creators: name: Nurmawanadilah, Dita
name: Budianto, Eka Wahyu Hestya
name: Dewi, Nindi Dwi Tetria
Publisher: name: Zenodo
Year: 2023

description: This research aims to map research topics surrounding Bank Aceh Syariah using a qualitative approach, which takes the form of library research and VOSviewer bibliometrics. The data collection technique is: first, open the Perish/Harzing software, then search for journals based on the title words category with the key word " Bank Aceh Syariah " within the entire year period. Second, collect journal title data in Microsoft Excel, and identify duplicate journal titles. Third, download files in RIS (Research Information Systems)and PDF (Portable Document Format)format from all journals for which data has been collected. Fourth, enter the RIS data file into Mendeley software Desktop. Data analysis technique by mapping research topics around Bank Aceh Syariah based on the journals that have been collected. The research results show that There are 4 mapping research topics using literature studies regarding Bank Aceh Syariah, namely: (1)Financial performance; (2)Employee performance; (3)Customer behavior; and (4)Other issues. The implication and contribution of this research is the mapping of research topics surrounding Bank Aceh Syariah, both frequently and rarely researched by researchers, so that other researchers can find out the gaps in research on this topic.
Guided Neuronal Growth on Arrays of Biofunctionalized GaAs/InGaAs Semiconductor Microtubes
Creators: name: Bausch, Cornelius S.
name: Koitmäe, Aune
name: Stava, Eric
name: Price, Amanda
name: Resto, Pedro J.
name: Huang, Yu
name: Sonnenberg, David
name: Stark, Yuliya
name: Heyn, Christian
name: Williams, Justin C.
name: Dent, Erik W.
name: Blick, Robert H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: We demonstrate embedded growth of cortical mouse neurons in dense arrays of semiconductor microtubes. The microtubes, fabricated from a strained GaAs/InGaAs heterostructure, guide axon growth through them and enable electrical and optical probing of propagating action potentials. The coaxial nature of the microtubes -- similar to myelin -- is expected to enhance the signal transduction along the axon. We present a technique of suppressing arsenic toxicity and prove the success of this technique by overgrowing neuronal mouse cells.
description: 3 pages, 4 figures
title: X Sesja Magistrantów i Doktorantów Łódzkiego Środowiska Chemików
Creators: name: Długosz-Lisiecka, Magdalena
name: Rokita, Bożena
name: Wydział Chemiczny Politechniki Łódzkiej
name: Oddział Łódzki Polskiego Towarzystwa Chemicznego
Publisher: name: Wydawnictwo Politechniki Łódzkiej
Year: 2019

description: Sesja Magistrantów i Doktorantów Łódzkiego Środowiska Chemików jest przeglądem osiągnięć naukowych oraz forum wymiany doświadczeń przedstawicieli szkół wyższych i jednostek naukowych zajmujących się problematyką chemiczną na terenie Łodzi. Spotkania te corocznie gromadzą wielu studentów i doktorantów oraz ich promotorów.
Photometric evolution, orbital modulation and progenitor of Nova Mon 2012
Creators: name: Munari, U.
name: Dallaporta, S.
name: Castellani, F.
name: Valisa, P.
name: Frigo, A.
name: Chomiuk, L.
name: Ribeiro, V. A. R. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present and discuss accurate and densely mapped BVRI lightcurves of the neon Nova Mon 2012, supplemented by the evolution in Stromgren b and y bands and in the integrated flux of relevant emission lines. Our monitoring started with the optical discovery of the nova and extend to day +270, well past the end of the super-soft phase in X-rays. The nova displayed very smoothly evolving lightcurves. A bifurcation between y and V light-curves took place at the start of the SSS phase, and a knee developed toward the end of the SSS phase. The apparent magnitude of the nova at the unobserved optical maximum is constrained to +2.8=
description: MNRAS. Submitted in original form on 19 March 2013
Homogeneous viscous flows about corners
Creators: name: Stojanovic, Stevan
Publisher: name: Monash University
Year: 2017
Subjects: Uncategorized

description: This thesis begins with a survey of the work completed by Moffatt (1964) where he deduced that for regions near sharp corners in a two dimensional homogeneous viscous fluid, an approximation for the flow is appropriate in an expansion of analytical functions. This approximation implies that for some flow schemes with corners, a singularity in the flow is present; especially when dealing with derivatives of the velocity field. It is the aim of this thesis to develop and incorporate numerical methods which use this analytical expansion so that the singularities can be resolved. We proceed to analyse and overview three methods that incorporate the Moffatt expansion in the lid-driven cavity. These methods have been appropriately named to be the subtraction method, the scaling method and the alternative finite difference method. Following this, we analyse the Moffatt eigenvalues for corners whose angles are greater than 180 degrees and then modify the above methods, so that they can be applied to solve the steady state Navier-Stokes equations in more general domains with corners. It is found for internal corners with non-homogeneous boundary conditions, the subtraction method works best. For external corners with homogeneous boundary conditions, the alternative finite difference equations work best. Following that, we investigate the use of conformal transformations especially for the solutions of the steady state Navier-Stokes equations. These conformal transformation methods are then compared to the methods mentioned earlier in terms of accuracy and resolution. We find that for certain geometries, conformal transformations can be used to significantly increase the resolution and accuracy of the flow near `external' corners. However, these transformations are not so well suited for `internal' corners as the resolution is comparatively poorly captured when solving the Navier-Stokes equations with a regular grid spacing. The central result of this thesis shows that in some geometries, changes to the accuracy of the flow around a corner with respect to the Navier-Stokes equations can significantly change and influence the contour curves in a sub-region of the geometry of the fluid.
Rapidly accreting white dwarfs as supernova type Ia progenitors
Creators: name: Lepo, Kelly
name: van Kerkwijk, Marten
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The nature of the progenitors of type Ia supernovae is still a mystery. While plausible candidates are known for both the single degenerate and double degenerate models, the observed numbers fall significantly short of what is required to reproduce the type Ia supernovae rate. Some of the most promising single-degenerate type Ia progenitors are recurrent novae and super-soft sources (SSS). White dwarfs with higher mass transfer rates can also be type Ia supernova progenitors. For these rapidly accreting white dwarfs (RAWD), more material than is needed for steady burning accretes on the white dwarf, and extends the white dwarf's photosphere. Unlike super-soft sources, such objects will likely not be detectable at soft X-ray energies, but will be bright at longer wavelengths, such as the far ultraviolet (UV). Possible examples include LMC N66 and the V Sagittae stars. We present a survey using multi-object spectrographs looking for RAWD in the central core of the SMC, from objects selected to be bright in the far UV and with blue far UV-V colors. While we find some unusual objects, and recover known planetary nebula and WR stars, we detect no candidate RAWD. The upper limits from this non-detection depending on our expectations of what a RAWD should look like, as well assumptions about the internal extinction of the SMC. Assuming they resemble LMC N66 or fainter versions of Wolf-Rayet stars we set an upper limit of 10-14 RAWD in the SMC. However, our survey is unlikely to detect objects like V Sge, and hence we cannot set meaningful upper limits if RAWD generally resemble these.
Towards the Description of Core-Excited States within the Framework of Many-Body Perturbation Theory
Creators: name: Kehry, Max Karl
Publisher: name: Karlsruher Institut für Technologie (KIT)
Year: 2022
Subjects: GW
Bethe-Salpeter equation
BSE
theoretical chemistry
core-excited states
two-component theory
damped response theory
core-valence separation
CVS

description: Gegenstand dieser Arbeit ist die Entwicklung effizienter und robuster Methoden zur Beschreibung von Ladungs- und ladungsneutralen Anregungen von kernnahen Zuständen in molekularen Systemen mittels Vielteilchen-Störungstheorie. Um auch die Anwendbarkeit auf Systeme, die schwere Elemente beinhalten, zu gewährleisten, wird der Formalismus in einem zwei-komponentigen Kramers-symmetrischen Rahmen präsentiert. Dies erlaubt neben skalarrelativistischen Effekten auch die explizite Beschreibung der Spin-Bahn-Wechselwirkung. Die erarbeiteten Ansätze bleiben jedoch auch im ein-komponentigen, nichtrelativistischen Grenzfall gültig. Es wird eine neue Methode zur Berechnung von Quasiteilchenenergien in der GW-Näherung vorgestellt und bewertet. Dabei wird die Beschreibung von Ladungsanregungen, den Ionisierungsenergien und Elektronenaffinitäten, gleichermaßen für Valenz- und Rumpfelektronen ermöglicht. Diese Technik verringert gerade für die letztere Anwendung den Aufwand drastisch im Vergleich zu etablierten Methoden und besitzt zudem auch Vorteile für Systeme mit einer hohen Zustandsdichte. Die so erhaltenen Quasiteilchenenergien werden im Weiteren als Ausgangspunkt zur Berechnung von ladungsneutralen Anregungen, wie sie zur Beschreibung von Experimenten aus der Röntgenabsorptionsspektroskopie benötigt werden, mittels der Bethe-Salpeter Gleichung verwendet. Es werden zwei Ansätze diskutiert, die bereits im Rahmen der Dichtefunktionaltheorie und post-Hartree–Fock Methoden bekannt sind. Erstere folgt der gedämpften linearen Antworttheorie und führt eine künstliche Lebenszeit für angeregte Zustände ein. Dies ermöglicht die Berechnung dynamischer Polarisierbarkeiten für beliebige Frequenzen. Die zweite Methode nutzt die schwache Kopplung zwischen den Anregungen rumpfnaher und Valenzelektronen in der elektronischen Hesse-Matrix. Das Problem wird in einem entsprechenden Unterraum der Einfachanregungen von Rumpfelektronen gelöst. Beide Methoden werden im Folgenden zusammen mit den entsprechenden Implementierungen vorgestellt und auf die Möglichkeit zur Beschreibung von Anregungen von kernnahen Elektronen bewertet. Die Ergebnisse werden mit weiteren Methoden, sowie experimentellen Daten verglichen, und auf reale Fragestellungen angewandt.
Wakalah on Islamic Financial Inclusion: Mapping Research Topics using VOSviewer Bibliometric Study and Library Research
Creators: name: Panatagama, Ahmad Ramapanji
name: Budianto, Eka Wahyu Hestya
name: Dewi, Nindi Dwi Tetria
Publisher: name: Zenodo
Year: 2023

description: This research aims to map research topics surrounding the Wakalah on Islamic Financial Inclusion with a qualitative approach, which is in the nature of a library research. The data collection technique is: first, open the Perish/Harzing software, then search for journals based on the title words category saying the key "Wakalah" within the entire year period. Second, collect journal title data in Microsoft Excel, and identify duplicate journal titles. Third, download files in RIS (Research Information Systems) and PDF (Portable Document Format) format from all journals for which data has been collected. Fourth, enter the RIS data file into Mendeley software Desktop. Data analysis technique by mapping research topics around the Wakalah based on the journals that have been collected. The research results show that There are 5 mapping research topics surrounding the Wakalah, namely: (1) Application of the Wakalah; (2) The effect of the Wakalah; (3) Views of Islamic law, positive law and legislation surrounding the Wakalah; (4) Efforts to develop the Wakalah; and (5) Other issues related to the Wakalah. The implication and contribution of this research is mapping research topics surrounding the Wakalah, both those that are often or rarely researched by researchers, so that other researchers can find out the gaps in research on this topic.
Long term variability of Cygnus X-1 V. State definitions with all sky monitors
Creators: name: Grinberg, V.
name: Hell, N.
name: Pottschmidt, K.
name: Böck, M.
name: Nowak, M. A.
name: Rodriguez, J.
name: Bodaghee, A.
name: Bel, M. Cadolle
name: Case, G. L.
name: Hanke, M.
name: Kühnel, M.
name: Markoff, S. B.
name: Pooley, G. G.
name: Rothschild, R. E.
name: Tomsick, J. A.
name: Wilson-Hodge, C. A.
name: Wilms, J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a scheme to determine the spectral state of the canonical black hole Cyg X-1 using data from previous and current X-ray all sky monitors (RXTE-ASM, Swift-BAT, MAXI, and Fermi-GBM). State determinations of the hard/intermediate and soft state agree to better than 10% between different monitors, facilitating the determination of the state and its context for any observation of the source, potentially over the lifetimes of different individual monitors. A separation of the hard and the intermediate state, which strongly differ in their spectral shape and short-term timing behavior, is only possible when monitor data in the soft X-rays (<5 keV) are available. A statistical analysis of the states confirms the different activity patterns of the source (e.g., months to years long hard state periods or phases during which numerous transitions occurs). It also shows the hard and soft states to be stable, with the probability of Cyg X-1 remaining in a given state for at least one week to be larger than 85% for the hard state and larger than 75%, for the soft state. Intermediate states are short lived, with a probability of 50% that the source leaves the intermediate state within three days. A reliable detection of these potentially short-lived events is only possible with monitor data with a time resolution of better than 1 d.
description: A&A accepted on 05/03/2013, 12 pages, 11 figures
Unidentified
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2021
Subjects: Police misconduct
Freedom of speech

description: John Penley talks about his and Stanley Cohen's encounter with police over a free speech issue. Video appears to be unrelated (TV Guide and Weather Channel) – some other Fass VHS tapes originally contained similar video, but only the audio was retained. This file has been preserved as an example of this type of content.
The Effect of Vulnerability to Disease on Children’s COVID Behavioral Response Moderated by Health Consciousness and Family Financial Status
Creators: name: LU, Hui Jing
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: With a longitudinal design, this study examined how early childhood family financial status and health consciousness interactively affect children’s health, and how perceived vulnerability to disease affected children’s COVID behavioral responses with moderation from family financial status and health consciousness.
Phase space flow in the Husimi representation
Creators: name: Veronez, M.
name: de Aguiar, M. A. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We derive a continuity equation for the Husimi function evolving under a general non-hermitian Hamiltonian and identify the phase space flow associated with it. For the case of unitary evolution we obtain explicit formulas for the quantum flow, which can be written as a classical part plus semiclassical corrections. These equations are the analogue of the Wigner flow, which displays several non-intuitive features like momentum inversion and motion of stagnation points. Many of these features also appear in the Husimi flow and, therefore, are not related to the negativity of the Wigner function as previously suggested. We test the exact and semiclassical formulas for a particle in a double well potential. We find that the zeros of the Husimi function are saddle points of the flow, and are always followed by a center. Merging or splitting of stagnation points, observed in the Wigner flow,does not occur because of the isolation of the Husimi zeros.
description: 18 pages, 3 figures
A Tight-Binding Approach to Overdamped Brownian Motion on a Multidimensional Tilted Periodic Potential
Creators: name: Challis, K. J.
name: Jack, Michael W.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We present a theoretical treatment of overdamped Brownian motion on a multidimensional tilted periodic potential that is analogous to the tight-binding model of quantum mechanics. In our approach we expand the continuous Smoluchowski equation in the localized Wannier states of the periodic potential to derive a discrete master equation. This master equation can be interpreted in terms of hopping within and between Bloch bands and for weak tilting and long times we show that a single-band description is valid. In the limit of deep potential wells, we derive a simple functional dependence of the hopping rates and the lowest band eigenvalues on the tilt. We also provide general expressions for the drift and diffusion in terms of the lowest band eigenvalues.
description: 10 pages
Entropy Production for Quantum Markov Semigroups
Creators: name: Fagnola, Franco
name: Rebolledo, Rolando
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: An invariant state of a quantum Markov semigroup is an equilibrium state if it satisfies a quantum detailed balance condition. In this paper, we introduce a notion of entropy production for faithful normal invariant states of a quantum Markov semigroup on B(h) as a numerical index measuring "how much far" they are from equilibrium. The entropy production is defined as the derivative of the relative entropy of the one-step forward and backward evolution in analogy with the classical probabilistic concept. We prove an explicit trace formula expressing the entropy production in terms of the completely positive part of the generator of a norm continuous quantum Markov semigroup showing that it turns out to be zero if and only if a standard quantum detailed balance condition holds.
Capitalismo social e justiça social
Creators: name: Nery da Silva, Breno
Publisher: name: figshare
Year: 2023
Subjects: History of economic thought

description: O capitalismo é, sem dúvida, um dos sistemas econômicos mais poderosos e influentes já criados pelo ser humano. No entanto, também é um sistema que enfrenta críticas crescentes por sua incapacidade de resolver questões fundamentais de justiça social e sustentabilidade. A desigualdade econômica está em ascensão em muitos países, com as elites detendo uma parcela cada vez maior da riqueza e do poder, enquanto muitos trabalhadores lutam para sobreviver com salários baixos e precárias condições de trabalho. Além disso, a mudança climática e a degradação ambiental continuam a ameaçar o futuro do planeta.Diante desses desafios, a ideia de um capitalismo social, que priorize a equidad e e a sustentabilidade, está ganhando força em muitos círculos. Essa abordagem procura remodelar o sistema econômico existente, de modo a promover uma distribuição mais justa da riqueza e a proteção do meio ambiente, ao mesmo tempo em que mantém a dinâmica de mercado que impulsiona a inovação e o crescimento econômico. Este artigo explora a viabilidade e os desafios de uma abordagem mais equitativa e sustentável para o desenvolvimento econômico, concentrando-se em particular na ideia de um capitalismo social e justiça social. Ao examinar a literatura existente, bem como exemplos práticos de políticas e práticas que promovem o capitalismo social em diferentes contextos, este artigo busca responder a algumas das principais questões que cercam essa abordagem, como: como o capitalismo social pode ser implementado na prática, que políticas e práticas são necessárias para torná-lo viável, e quais são os obstáculos políticos, econômicos e culturais que precisam ser superados para que ele seja adotado em escala global.
title: Двухдиапазонная совмещенная антенная система на основе однорезонансного искусственного магнитного проводника
Creators: name: В.С. Верба – чл.-корр. РАН, Засл. деятель науки РФ, д.т.н., профессор, ген. конструктор – первый зам. ген. директора АО «Концерн «Вега» (Москва) E-mail: mail@vega.su, vvs.msk@gmail.com А.П. Волков – к.т.н., АО «Концерн «Вега» (Москва) E-mail: alexander.p.volkov@gmail.com В.В. Какшин – сотрудник, АО «Концерн «Вега» (Москва) И.Ю. Рыжов – сотрудник, АО «Концерн «Вега» (Москва) К.В. Козлов – сотрудник, АО «Концерн «Вега» (Москва) А.П. Курочкин – д.т.н., профессор, АО «Концерн «Вега» (Москва), В.С. Верба – чл.-корр. РАН, Засл. деятель науки РФ, д.т.н., профессор, ген. конструктор – первый зам. ген. директора АО «Концерн «Вега» (Москва) E-mail: mail@vega.su, vvs.msk@gmail.com А.П. Волков – к.т.н., АО «Концерн «Вега» (Москва) E-mail: alexander.p.volkov@gmail.com В.В. Какшин – сотрудник, АО «Концерн «Вега» (Москва) И.Ю. Рыжов – сотрудник, АО «Концерн «Вега» (Москва) К.В. Козлов – сотрудник, АО «Концерн «Вега» (Москва) А.П. Курочкин – д.т.н., профессор, АО «Концерн «Вега» (Москва)
Publisher: name: Издательство Радиотехника
Year: 2019

description: Исследована возможность построения совмещенных двухдиапазонных антенных систем на основе однорезонансного искусственного магнитного проводника.
Разработано техническое решение совмещенной двухдиапазонной антенной системы с отношением рабочих частот антенн fhf / flf = 3, комплексированной с искусственным магнитным проводником.
Приведены рассчитанные с помощью электродинамического моделирования характеристики согласования, развязки и направленности разработанной совмещенной антенной системы.
Показано, что устранить отмеченные резонансы можно путем выбора типа элемента ВЧ-антенны, использования фидера ВЧ-антенны с фильтрующими свойствами. На основе проведенных исследований разработана совмещенная двухдиапазонная АС на основе АМС с отношением рабочих частот ВЧ- и НЧ-антенн fhf / flf = 3. Высота разработанной АС составляет 0,16λLF (на 36% меньше по сравнению с классическим случаем совмещенных вибраторно-вибраторных АС) при полосе рабочих частот 40% в НЧ-диапазоне и 14% в ВЧ-диапазоне по уровню КСВ ≤ 2. Развязка между антеннами различного диапазона не превышает −30 дБ.
Arterial stiffening provides sufficient explanation for primary hypertension
Creators: name: Pettersen, Klas H.
name: Bugenhagen, Scott M.
name: Nauman, Javaid
name: Beard, Daniel A.
name: Omholt, Stig W.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Tissues and Organs (q-bio.TO)
subject: FOS: Biological sciences
subject: 92C30

description: Hypertension is one of the most common age-related chronic diseases and by predisposing individuals for heart failure, stroke and kidney disease, it is a major source of morbidity and mortality. Its etiology remains enigmatic despite intense research efforts over many decades. By use of empirically well-constrained computer models describing the coupled function of the baroreceptor reflex and mechanics of the circulatory system, we demonstrate quantitatively that arterial stiffening seems sufficient to explain age-related emergence of hypertension. Specifically, the empirically observed chronic changes in pulse pressure with age, and the impaired capacity of hypertensive individuals to regulate short-term changes in blood pressure, arise as emergent properties of the integrated system. Results are consistent with available experimental data from chemical and surgical manipulation of the cardio-vascular system. In contrast to widely held opinions, the results suggest that primary hypertension can be attributed to a mechanogenic etiology without challenging current conceptions of renal and sympathetic nervous system function. The results support the view that a major target for treating chronic hypertension in the elderly is the reestablishment of a proper baroreflex response.
description: 19 pages, 4 figures
Early Diagnosis of Retinal Blood Vessel Damage via Deep Learning-Powered Collective Intelligence Models
Creators: name: Bhardwaj, Pranjal
name: Gupta, Prajjwal
name: Guhan, Thejineaswar
name: Srinivasan, Kathiravan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Early diagnosis of retinal diseases such as diabetic retinopathy has had the attention of many researchers. Deep learning through the introduction of convolutional neural networks has become a prominent solution for image-related tasks such as classification and segmentation. Most tasks in image classification are handled by deep CNNs pretrained and evaluated on imagenet dataset. However, these models do not always translate to the best result on other datasets. Devising a neural network manually from scratch based on heuristics may not lead to an optimal model as there are numerous hyperparameters in play. In this paper, we use two nature-inspired swarm algorithms: particle swarm optimization (PSO) and ant colony optimization (ACO) to obtain TDCN models to perform classification of fundus images into severity classes. The power of swarm algorithms is used to search for various combinations of convolutional, pooling, and normalization layers to provide the best model for the task. It is observed that TDCN-PSO outperforms imagenet models and existing literature, while TDCN-ACO achieves faster architecture search. The best TDCN model achieves an accuracy of 90.3%, AUC ROC of 0.956, and a Cohen kappa score of 0.967. The results were compared with the previous studies to show that the proposed TDCN models exhibit superior performance.
title: Проблемы развития кадрового потенциала предприятий радиоэлектронной отрасли
Creators: name: В.С. Верба – чл.-корр. РАН, Засл. деятель науки РФ, д.т.н., профессор, ген. конструктор – первый зам. ген. директора АО «Концерн «Вега» (Москва) E-mail: mail@vega.su, vvs.msk@gmail.com, В.С. Верба – чл.-корр. РАН, Засл. деятель науки РФ, д.т.н., профессор, ген. конструктор – первый зам. ген. директора АО «Концерн «Вега» (Москва) E-mail: mail@vega.su, vvs.msk@gmail.com
Publisher: name: Издательство Радиотехника
Year: 2019

description: Рассмотрены проблемные вопросы, связанные с развитием кадрового потенциала предприятий радиоэлектронной отрасли. Обращено внимание на современные вызовы, которые усиливают потребность в развитии кадрового потенциала.
В качестве основных проблем кадрового потенциала выделены: старение кадров, разрыв между поколениями высококвалифицированных кадров, восполнение квалифицированных кадров, текучесть кадров. При этом в качестве основного источника восполнения кадров предложены вузы страны, а основной формой взаимодействия с вузами – институт базовых кафедр.
Изучена еще одна важная проблема для разрабатывающих предприятий – проблема восполнения научных кадров. Показано, что главным звеном в данной проблеме является сохранение и развитие научных школ предприятий, которые служат образующим ядром разрабатывающих предприятий. Показано, что проблема развития кадрового потенциала является комплексной проблемой, требующей объединения усилий государства и предприятий радиоэлектронной отрасли.
Multi-Pair Amplify-and-Forward Relaying with Very Large Antenna Arrays
Creators: name: Suraweera, Himal A.
name: Ngo, Hien Quoc
name: Duong, Trung Q.
name: Yuen, Chau
name: Larsson, Erik G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We consider a multi-pair relay channel where multiple sources simultaneously communicate with destinations using a relay. Each source or destination has only a single antenna, while the relay is equipped with a very large antenna array. We investigate the power efficiency of this system when maximum ratio combining/maximal ratio transmission (MRC/MRT) or zero-forcing (ZF) processing is used at the relay. Using a very large array, the transmit power of each source or relay (or both) can be made inversely proportional to the number of relay antennas while maintaining a given quality-of-service. At the same time, the achievable sum rate can be increased by a factor of the number of source-destination pairs. We show that when the number of antennas grows to infinity, the asymptotic achievable rates of MRC/MRT and ZF are the same if we scale the power at the sources. Depending on the large scale fading effect, MRC/MRT can outperform ZF or vice versa if we scale the power at the relay.
description: IEEE International Conference on Communicatons (ICC), Budapest, Hungary, June 2013
Phase-Resolved Infrared Spectroscopy and Photometry of V1500 Cygni, and a Search for Similar Old Classical Novae
Creators: name: Harrison, Thomas E.
name: Campbell, Randy D.
name: Lyke, James E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present phase-resolved near-infrared photometry and spectroscopy of the classical nova V1500 Cyg to explore whether cyclotron emission is present in this system. While the spectroscopy do not indicate the presence of discrete cyclotron harmonic emission, the light curves suggest that a sizable fraction of its near-infrared fluxes are due to this component. The light curves of V1500 Cyg appear to remain dominated by emission from the heated face of the secondary star in this system. We have used infrared spectroscopy and photometry to search for other potential magnetic systems amongst old classical novae. We have found that the infrared light curves of V1974 Cyg superficially resemble those of V1500 Cyg, suggesting a highly irradiated companion. The old novae V446 Her and QV Vul have light curves with large amplitude variations like those seen in polars, suggesting they might have magnetic primaries. We extract photometry for seventy nine old novae from the 2MASS Point Source Catalog and use those data to derive the mean, un-reddened infrared colors of quiescent novae. We also extract WISE data for these objects and find that forty five of them were detected. Surprisingly, a number of these systems were detected in the WISE 22 mum band. While two of those objects produced significant dust shells (V705 Cas and V445 Pup), the others did not. It appears that line emission from their ionized ejected shells is the most likely explanation for those detections.
description: Accepted in the Astronomical Journal
title: Способ построения и параметры объемных антенных решеток широкодиапазонных азимутально-угломестных радиопеленгаторов с круговой рабочей зоной
Creators: name: А.Д. Виноградов – д.т.н., профессор, гл. науч. сотрудник, ВУНЦ ВВС «ВВА» (г. Воронеж) E-mail: mvvad@mail.ru Е.П. Никитенко – конструктор, АО «Концерн «Созвездие» (г. Воронеж); аспирант, Воронежский государственный университет E-mail: nikitenko.ekaterina@gmail.com, А.Д. Виноградов – д.т.н., профессор, гл. науч. сотрудник, ВУНЦ ВВС «ВВА» (г. Воронеж) E-mail: mvvad@mail.ru Е.П. Никитенко – конструктор, АО «Концерн «Созвездие» (г. Воронеж); аспирант, Воронежский государственный университет E-mail: nikitenko.ekaterina@gmail.com
Publisher: name: Издательство Радиотехника
Year: 2019

description: Рассмотрен способ построения и приведены параметры широкодиапазонных объемных антенных решеток из ненаправленных антенн, размещаемых на конической поверхности кругового прямого конуса при большом электродинамическом расстоянии между фазовыми центрами соседних антенн, предназначенных для радиопеленгования источников радиоизлучения в азимутальной и угломестной плоскостях в условиях влияния полупроводящей земной поверхности.
Обоснованы основные принципы выбора точек размещения фазовых центров на конической поверхности кругового прямого конуса с прямым углом при его вершине: нечетная осевая симметрия структуры антенной решетки; формирование объемной антенной решетки в виде совокупности нескольких ярусов однокольцевых эквидистантных антенных решеток с одинаковым нечетным числом антенн; распределение радиусов однокольцевых антенных решеток по закону убывающей геометрической прогрессии, знаменатель которой зависит от числа антенн, размещенных на кольце.
Приведены результаты расчета с использованием метода моментов уровней боковых лепестков и амплитудных диаграмм направленности в азимутальной и угломестной плоскостях трех типов фазированных объемных антенных решеток с обоснованными структурами – девятиэлементной, состоящей из трех ярусов трехэлементных антенных решеток, и десятиэлементной и пятнадцатиэлементной, состоящих соответственно из двух и трех ярусов пятиэлементных антенных решеток. Показаны ре-зультаты расчета точности радиопеленгования в азимутальной и угломестной плоскостях с использованием девяти-, десяти- и пятнадцатиэлементных объемных фазированных антенных решеток с рассматриваемыми структурами на границах их рабочих диапазонов частот соответственно с семи-, десяти- и тридцатикратными коэффициентами перекрытия при различных отношениях сигнал/шум в каналах азимутально-угломестного радиопеленгатора в условиях влияния полупроводящей земной поверхности.
A Comparison of Bimolecular Reaction Models for Stochastic Reaction Diffusion Systems
Creators: name: Agbanusi, Ikemefuna C.
name: Isaacson, Samuel A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Mathematics
subject: FOS: Biological sciences

description: Stochastic reaction-diffusion models have become an important tool in studying how both noise in the chemical reaction process and the spatial movement of molecules influences the behavior of biological systems. There are two primary spatially-continuous models that have been used in recent studies: the diffusion limited reaction model of Smoluchowski, and a second approach popularized by Doi. Both models treat molecules as points undergoing Brownian motion. The former represents chemical reactions between two reactants through the use of reactive boundary conditions, with two molecules reacting instantly upon reaching a fixed separation (called the reaction-radius). The Doi model uses reaction potentials, whereby two molecules react with a fixed probability per unit time, $λ$, when separated by less than the reaction radius. In this work we study the rigorous relationship between the two models. For the special case of a protein diffusing to a fixed DNA binding site, we prove that the solution to the Doi model converges to the solution of the Smoluchowski model as $λ\to \infty$, with a rigorous $O(λ^{-1/2 + ε})$ error bound (for any fixed $ε> 0$). We investigate by numerical simulation, for biologically relevant parameter values, the difference between the solutions and associated reaction time statistics of the two models. As the reaction-radius is decreased, for sufficiently large but fixed values of $λ$, these differences are found to increase like the inverse of the binding radius.
description: 21 pages, 3 Figures, Fixed typo in title
Fetal left heart growth is flow-dependent: a fetal lamb model of hypoplastic left heart syndrome analysed by single-nucleus RNA sequencing
Creators: name: Sokolowski, Dustin
name: Reuter, Miriam
name: Chaturvedi, Rajiv
Publisher: name: figshare
Year: 2023
Subjects: Cardiology (incl. cardiovascular diseases)
Genomics and transcriptomics

description: Abstract from Reuter et al., 2023. This figshare provides the supplementary code and intermediary files to accompany this manuscript. Low blood flow through the fetal left heart was proposed as an etiology for hypoplastic left heart syndrome (HLHS), but with little evidence. We generated a fetal lamb model of mitral stenosis at mid-gestation, to investigate if left ventricular (LV) inflow obstruction (LVIO) resulted in left heart growth failure. Coils were implanted in the left atrium using an ultrasound-guided percutaneous technique. Significant LVIO recapitulated important clinical features of HLHS: decreased antegrade aortic valve flow, compensatory retrograde perfusion of the brain and ascending aorta (AAo), severe left heart hypoplasia, a non-apex forming LV, and a thickened endocardial layer. miRNA-seq and mRNA-seq of the hypoplastic Aao found inversely differentially expressed miRNA-gene pairs annotating to cell proliferative genes. Single-nucleus RNA-seq of the hypoplastic LV myocardium showed an increase in fibroblasts with a reciprocal decrease in cardiomyocyte nuclei proportions. Fibroblasts, cardiomyocytes and endothelial cells from hypoplastic myocardium had increased expression of genes associated with extracellular matrix components and cardiac remodeling, and evidence for dysregulated fibroblast growth factor signaling. Hence, a sustained (~1/3 gestation) reduction in fetal left heart flow was sufficient to cause left heart hypoplasia. While there was no overt fibrosis histologically, changes in the cellular composition and gene expression patterns were suggestive of an aberrant induction of mesenchymal programs and susceptibility to pro-fibrotic signaling.
title: Расчет максимальной вероятности аномальных ошибок азимутального радиопеленгатора с кольцевой антенной решеткой
Creators: name: И.С. Дмитриев – к.т.н., вед. науч. сотрудник, АО «Концерн «Созвездие» (г. Воронеж) E-mail: dmiv@mail.ru М.Ю. Ильин – к.т.н., ст. науч. сотрудник, АО «Концерн «Созвездие» (г. Воронеж) E-mail: miuril@rambler.ru, И.С. Дмитриев – к.т.н., вед. науч. сотрудник, АО «Концерн «Созвездие» (г. Воронеж) E-mail: dmiv@mail.ru М.Ю. Ильин – к.т.н., ст. науч. сотрудник, АО «Концерн «Созвездие» (г. Воронеж) E-mail: miuril@rambler.ru
Publisher: name: Издательство Радиотехника
Year: 2019

description: Предложена методика вычисления максимальной в секторе пеленгования и в диапазоне рабочих частот вероятности аномальной ошибки пеленгования многоканального пеленгатора с кольцевой антенной решеткой, основанная на известных закономерностях формирования боковых лепестков функции неопределенности такого пеленгатора, позволяющих определить условия формирования боковых лепестков максимального уровня.
Получена функция распределения разности между уровнями главного и наибольшего побочного лепестков функции правдо-подобия пеленга.
Установлено, что вероятность аномальной ошибки пеленгования определяется как вероятность отрицательного значения этой разности.
Unidentified
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2021
Subjects: Counterculture
Peace movements

description: Bob Fass is guest on the Vin Scelsa's program Idiot's Delight, broadcast by WFUV, discussing activities of the Yippies and Bob Dylan on the occasion of the film Chicago 10 (2007)
title: Анализ потенциальной точности амплитудного пеленгования источников радиоизлучения
Creators: name: М.П. Сличенко – к.ф.-м.н., начальник сектора, АО «Концерн «Созвездие» (г. Воронеж) E-mail: ntu541@sozvezdie.su С.П. Трушин – магистрант, Воронежский государственный университет, М.П. Сличенко – к.ф.-м.н., начальник сектора, АО «Концерн «Созвездие» (г. Воронеж) E-mail: ntu541@sozvezdie.su С.П. Трушин – магистрант, Воронежский государственный университет
Publisher: name: Издательство Радиотехника
Year: 2019

description: Проведен анализ потенциальной точности пеленгования источников радиоизлучения обнаружителем-пеленгатором с направ-ленными антенными элементами (АЭ) различных типов.
Исследованы теоретические и полученные по результатам статистического моделирования экспериментальные зависимости средней квадратической ошибки (СКО) пеленгования от отношения сигнал/шум (ОСШ).
Показано, что полученные результаты позволяют определять число АЭ, обеспечивающих требуемые характеристики точности амплитудного пеленгования, а также область значений ОСШ, для которых в качестве СКО пеленгования справедливо использовать границу неравенства Крамера–Рао.
Strangeness -2 hypertriton
Creators: name: Garcilazo, H.
name: Valcarce, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We have solved for the first time the Faddeev equations for the bound state problem of the coupled $ΛΛN$--$ΞNN$ system to study whether an hypertriton with strangeness -2 may exist or not. We make use of the interactions obtained from a chiral quark model describing the low-energy observables of the two-baryon systems with strangeness 0, -1, and -2 and three-baryon systems with strangeness 0 and -1. The $ΛΛN$ system alone is unbound. However, when the full coupling to $ΞNN$ is considered, the strangeness -2 three-baryon system with quantum numbers $(I,J^P)=(1/2,1/2^+)$ becomes bound, with a binding energy of about 0.5 MeV. This result is compatible with the non-existence of a stable $^3_Λ$H with isospin one.
description: 4 pages, 2 tables, accepted for publication in PRL
Unique decomposition for a polynomial of low rank
Creators: name: Ballico, E.
name: Bernardi, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 15A21, 15A69, 14N15

description: Let $F$ be a homogeneous polynomial of degree $d$ in $m+1$ variables defined over an algebraically closed field of characteristic 0 and suppose that $F$ belongs to the $s$-th secant variety of the $d$-uple Veronese embedding of $\mathbb{P}^m$ into $ \PP {{m+d\choose d}-1}$ but that its minimal decomposition as a sum of $d$-th powers of linear forms requires more than $s$ addenda. We show that if $s\leq d$ then $F$ can be uniquely written as $F=M_1^d+\cdots + M_t^d+Q$, where $M_1, \ldots, M_t$ are linear forms with $t\leq (d-1)/2$, and $Q$ a binary form such that $Q=\sum_{i=1}^q l_i^{d-d_i}m_i$ with $l_i$'s linear forms and $m_i$'s forms of degree $d_i$ such that $\sum (d_i+1)=s-t$.
description: 6 pages