cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Managing Traceability Information Models: Not such a simple task after all?
Creators: name: Maro, Salome
name: Steghöfer, Jan-Philipp
name: Knauss, Eric
name: Horkoff, Jennifer
name: Kasauli, Rashidah
name: Wohlrab, Rebekka
name: Korsgaard, Jesper Lysemose
name: Wartenberg, Florian
name: Strøm, Niels Jørgen
name: Alexandersson, Ruben
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Practitioners are poorly supported by the scientific literature when managing traceability information models (TIMs), which capture the structure and semantics of trace links. In practice, companies manage their TIMs in very different ways, even in cases where companies share many similarities. We present our findings from an in-depth focus group about TIM management with three different systems engineering companies. We find that the concrete needs of the companies as well as challenges such as scale and workflow integration are not considered by existing scientific work. We thus issue a call-to-arms for the requirements engineering and software and systems traceability communities, the two main communities for traceability research, to refocus their work on these practical problems.
description: \copyright 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works
Diffusive and Fluid-like Motion of Homochiral Domain Walls in Easy-Plane Magnetic Strips
Creators: name: Smith, David A.
name: Takei, So
name: Brann, Bella
name: Compton, Lia
name: Ramos-Diaz, Fernando
name: Simmers, Matthew
name: Emori, Satoru
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Propagation of easy-plane magnetic precession can enable more efficient spin transport than conventional spin waves. Such easy-plane spin transport is typically understood in terms of a hydrodynamic model, partially analogous to superfluids. Here, using micromagnetic simulations, we examine easy-plane spin transport in magnetic strips as the motion of a train of domain walls rather than as hydrodynamic flow. We observe that the motion transitions from diffusive to fluid-like as the density of domain walls is increased. This transition is most evident in notched nanostrips, where the the domain walls are pinned by the notch defect in the diffusive regime but propagate essentially unimpeded in the fluid-like regime. Our findings suggest that spin transport via easy-plane precession, robust against defects, is achievable in strips based on realistic metallic ferromagnets and hence amenable to practical device applications.
description: 13 pages, 10 figures
The Story of an Antiracist Project as Difficult Knowledge: Misalignment between Conscious Intent and Unconscious Desire
Creators: name: Shim, Jenna Min
Publisher: name: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS)
Year: 2014

description: Jenna Min Shim returns to concerns about critical pedagogy that Elizabeth Ellsworth raised 25 years ago, drawing on psychoanalytic theory to probe her own irrational hopes and attachments as an anti-racist educator.
description: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS), Vol 10 No 1 (2014)
Wpływ gier na rozwój osobowości dziecka
Creators: name: Sala-Suszyńska, Justyna
Publisher: name: Wydawnictwo Uniwersytetu Jana Kochanowskiego w Kielcach
Year: 2024

description: SPIS TREŚCI ARTYKUŁY I ROZPRAWY TERESA WILK, O potrzebie szerszego wprowadzenia sztuki w szkolny proces edukacyjno-wychowawczy młodego pokolenia . . . . . . . . . . . . . .. . 11 KARINA LEKSY, Body in the social domain of the Internet – the effect of social comparisons on self-esteem and body-related behavior of young adults . . . . 25 JUSTYNA ŚWIERCZYŃSKA, BEATA PAWŁOWSKA, IZABELA CHOJNOWSKA- -ĆWIĄKAŁA, Mothers’ personality traits and psychological and social functioning of children with autism spectrum disorder . . . . . . . . . . . . . . . . . . . 43 BARBARA LULEK, Zabawa – praca – fascynacja. Obraz dzieciństwa w pracowni artystycznej . . . . .. . . . 71 PAULINA FORMA, An eclectic approach to the study of parental attitudes towards a disabled child. The context of St. John Paul II . . 87 ANNA RÓŻA MAKARUK, Ocena skuteczności Interpersonalnego Treningu Twórczego Myślenia (ITTM) w podnoszeniu poziomu samooceny jego uczestników . . .101 DANUTA NIKITENKO, Twórczość i kreatywność w świetle rozważań pedagogicznych (studenci pedagogiki na temat kreatywności) . . . . . . . . . . . . 117 KATARZYNA ROGOZIŃSKA, Zygmunt Noskowski (1846–1909) – sylwetka nauczyciela muzyki . .139 JUSTYNA SALA-SUSZYŃSKA, Wpływ gier na rozwój osobowości dziecka . . . . . . . 157 KATARZYNA SEGIET, Odpowiedzialność rodzicielska w obliczu przemian społecznych . . . . 173 MONIKA WOJTKOWIAK, Brotherhood in the aid service. The “Warrior Project” as a new form of development and support provided by soldiers to soldiers 189 ALEKSANDRA SOBAŃSKA, Postawy czytelnicze – próba konceptualizacji i ich znaczenie w badaniach edukacyjnych . . . . 199 BADANIA I KOMUNIKATY AGNIESZKA ZAJĄC, Rozumienie seksualności i wychowania seksualnego dzieci przez matki i nauczycielki przedszkola . . . 213 MARLENA STRADOMSKA, Pornografia 2.0. Nowe zagrożenia na podstawie studiów przypadków . . . . . . . 231 ANNA RÓG, ANNA SKOTNICKA, Czas wolny w czasie pandemii w perspektywie młodzieży ostatnich klas szkoły podstawowej – wybrane aspekty . . . . . . . . . . 245 WERONA KRÓL-GIERAT, VERA SAVIĆ, The diverse linguistic attainment and attitude development of children learning English as a foreign language in inclusive classes . . . . . . . . 261 DAMIAN LABIAK, Młodzi nauczyciele muzyki wobec wyzwań swojej profesji. Komunikat z badań . . . . . . 289 DOROTA RUSZKIEWICZ, Rodzeństwo w roli rodzicielskiej . . . . . . . 309
description: Tekst ma charakter praktyczny i podkreśla istotny wpływ gier na rozwój osobowości dziecka. Autorka, analizując wady i zalety gier, stara się wyjaśnić czytelnikowi, dlaczego w trakcie edukacji należy z nich korzystać. Ponadto dokonuje szczegółowej charakterystyki gier obecnych na rynku edukacyjnym, wskazując na te, które mają największy wpływ na rozwój ucznia. Udziela także rad, w jaki sposób dobierać gry, również komputerowe, aby przynosiły korzyści i nauka w oparciu o nie była przyjemna i efektywna.
Engendering Knowledge and its Nurture
Creators: name: Mayer, Susan Jean
Publisher: name: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS)
Year: 2014

description: Managing editor Susan Jean Mayer reads Petra Monroe Hendry’s sweeping history of women as knowers and educators against her own work in Progressivism and Pragmatism and Madeleine Grumet’s classic text, Bitter Milk.
description: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS), Vol 10 No 1 (2014)
Managing Innovation Under Nationalisation: the British Gas industry and the first trans-oceanic transportation of Liquefied Natural Gas: 1954-1959
Creators: name: Pym, Jeffrey G.
Publisher: name: University of Leicester
Year: 2021
Subjects: Uncategorized

description: This thesis interrogates a scarcely remembered “world first” event in February 1959 when a rebuilt war-surplus cargo ship, called the Methane Pioneer, arrived at newly completed terminal facilities built for North Thames Gas on Canvey Island in Essex. It was carrying liquefied natural gas (LNG) sent from Lake Charles in Louisiana. On arrival it was unloaded and its cargo was transferred through novel cryogenic pipelines to innovative cryogenic storage tanks. It was the crowning achievement of a joint venture between America’s biggest abattoir company, an American oil distribution company and a nationalised British gas company. It contributed to the survival of Britain’s gas industry by paving the way for conversion to natural gas and facilitated the establishment of a new global industry for transporting LNG. Drawing on an extensive range of archives and contemporary publications, including unlisted material in the British Gas Archives, the thesis answers key questions about the project. It shows how and why it gained political support in the face of opposition from some MPs with coalmining interests and how that support facilitated a change in the law governing importation of petroleum products. It answers what permissions were required to bring into Britain what was seen as a potentially hazardous cargo and how ministerial support eased the granting of regulatory authorities to import the cargo on to the residential Canvey Island, frustrating opposition from the local authorities. It shows how engineers in the North Thames Gas Company overcame numerous technical challenges, many at the boundaries of contemporary scientific understanding. They ranged from cryogenic metallurgy to thermal stress management, handling extremely low temperature cargos, insulation and welding exotic alloys. At a time when modern project management techniques were still inchoate, it shows how the risks and uncertainties involved were managed or mitigated. It answers how the British gas industry was managed after nationalisation, how it retained the technical and technological skills from the pre-nationalisation gas undertakings and particularly how the skills and ethos of the Gas Light and Coke Company were inherited by North Thames Gas. At a time of strict financial and foreign currency exchange controls in the wake of the Suez crisis, it shows the financial entrepreneurialism needed to raise the US Dollars to fund participation in the project. An essential skill demonstrated by the British gas industry was its ability to manage its part in a project divided by the Atlantic Ocean, demonstrating competence in Anglo-American relationships. Together the answers contribute to historical understandings by revealing the ability of a British nationalised industry to manage successful innovations in collaboration with international partners.
Sexuality and Curriculum: The Kids are Alright (But the Adults are Really, Really Nervous)
Creators: name: Whitlock, Reta Ugena
Publisher: name: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS)
Year: 2014

description: Ugena Whitlock considers Dennis Carlson’s curricular history of adolescent sexuality and sex education, ultimately recommending the text both for the original insight it offers educators and for its potential as a high school text.
description: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS), Vol 10 No 1 (2014)
Extended Debye Model for Molecular Magnets
Creators: name: Garanin, D. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Heat capacity data on Mn12 are fitted within the extended Debye model that takes into account a continuum of optical modes as well as three different speeds of sound.
description: 4 Phys. Rev pages, 4 figures, submitted to Physical Review B as a Brief Report. In version 3 speeds of sound corrected
Bildung and Remembering Bill
Creators: name: Mayer, Susan
Publisher: name: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS)
Year: 2016

description: The following two articles complete our first volume in our new institutional home. Both originated as presentations at AAACS meetings. The first, by Tero Autio, one of the founding scholars of the IAACS conference, builds from work that Autio presented at this year’s AAACS conference on the historical and theoretical origins of what he sees as a transnational curriculum policy leadership crisis. Autio considers the historical influences of the governing narratives of U.S. instrumentalism and Northern European Bildung in order to inform efforts to think beyond current theoretical and moral vacuums within transnational curriculum theory.


The final article by Theodorea Berry and Michael Jennings extends two of the formal remembrances of our colleague William Watkins that were offered at the close of the 2015 meeting. As in the case of Molly Quinn’s tribute to Maxine Greene, published this past spring, Berry’s and Jenning’s piece offers personal perspective on the valued contributions of a scholar whose loss is keenly felt within our field.
description: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS), Vol 11 No 2 (2016)
Collective magnetic excitations in AA- and AB-stacked graphene bilayers
Creators: name: Sánchez, M. Sánchez
name: Gómez-Santos, G.
name: Stauber, T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We discuss novel transverse plasmon-polaritons that are hosted by AA- and AB-stacked bilayer graphene due to perfect nesting. They are composed of oscillating counterflow currents in between the layers, giving a clear interpretation for these collective modes as magnetic excitations carrying magnetic moment parallel to the planes. For AA-stacked bilayer graphene, these modes can reach zero frequency at the neutrality point and we thus predict a symmetry broken ground-state leading to in-plane orbital ferromagnetism. Even though it could be hard to detect them in real solid-state devices, these novel magnetic plasmons should be observable in artificial set-ups such as optical lattices. Also, our results might be relevant for magic angle twisted bilayer graphene samples as their electronic properties are mostly determined by confined AA-stacked regions.
description: 12 pages, 6 figures
Crystal-to-Crystal Transitions in Binary Mixtures of Soft Colloids
Creators: name: Immink, Jasper N.
name: Bergman, Maxime J.
name: Maris, J. J. Erik
name: Stenhammar, Joakim
name: Schurtenberger, Peter
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: In this article, we demonstrate a method for inducing reversible crystal-to-crystal transitions in binary mixtures of soft colloidal particles. Through a controlled decrease of salinity and increasingly dominating electrostatic interactions, a single sample is shown to reversibly organize into entropic crystals, electrostatic attraction-dominated crystals or aggregated gels, which we quantify using microscopy and image analysis. We furthermore analyze crystalline structures with bond order analysis to discern between two crystal phases. We observe the different phases using a sample holder geometry that allows both in situ salinity control and imaging through Confocal Laser Scanning Microscopy, and apply a synthesis method producing particles with high resolvability in microscopy with control over particle size. The particle softness provides for an enhanced crystallization speed, while altering the re-entrant melting behavior as compared to hard sphere systems. This work thus provides several tools for use in the reproducible manufacture and analysis of binary colloidal crystals.
Odpowiedzialność rodzicielska w obliczu przemian społecznych
Creators: name: Segiet, Katarzyna
Publisher: name: Wydawnictwo Uniwersytetu Jana Kochanowskiego w Kielcach
Year: 2024

description: SPIS TREŚCI ARTYKUŁY I ROZPRAWY TERESA WILK, O potrzebie szerszego wprowadzenia sztuki w szkolny proces edukacyjno-wychowawczy młodego pokolenia . . . . . . . . . . . . . .. . 11 KARINA LEKSY, Body in the social domain of the Internet – the effect of social comparisons on self-esteem and body-related behavior of young adults . . . . 25 JUSTYNA ŚWIERCZYŃSKA, BEATA PAWŁOWSKA, IZABELA CHOJNOWSKA- -ĆWIĄKAŁA, Mothers’ personality traits and psychological and social functioning of children with autism spectrum disorder . . . . . . . . . . . . . . . . . . . 43 BARBARA LULEK, Zabawa – praca – fascynacja. Obraz dzieciństwa w pracowni artystycznej . . . . .. . . . 71 PAULINA FORMA, An eclectic approach to the study of parental attitudes towards a disabled child. The context of St. John Paul II . . 87 ANNA RÓŻA MAKARUK, Ocena skuteczności Interpersonalnego Treningu Twórczego Myślenia (ITTM) w podnoszeniu poziomu samooceny jego uczestników . . .101 DANUTA NIKITENKO, Twórczość i kreatywność w świetle rozważań pedagogicznych (studenci pedagogiki na temat kreatywności) . . . . . . . . . . . . 117 KATARZYNA ROGOZIŃSKA, Zygmunt Noskowski (1846–1909) – sylwetka nauczyciela muzyki . .139 JUSTYNA SALA-SUSZYŃSKA, Wpływ gier na rozwój osobowości dziecka . . . . . . . 157 KATARZYNA SEGIET, Odpowiedzialność rodzicielska w obliczu przemian społecznych . . . . 173 MONIKA WOJTKOWIAK, Brotherhood in the aid service. The “Warrior Project” as a new form of development and support provided by soldiers to soldiers 189 ALEKSANDRA SOBAŃSKA, Postawy czytelnicze – próba konceptualizacji i ich znaczenie w badaniach edukacyjnych . . . . 199 BADANIA I KOMUNIKATY AGNIESZKA ZAJĄC, Rozumienie seksualności i wychowania seksualnego dzieci przez matki i nauczycielki przedszkola . . . 213 MARLENA STRADOMSKA, Pornografia 2.0. Nowe zagrożenia na podstawie studiów przypadków . . . . . . . 231 ANNA RÓG, ANNA SKOTNICKA, Czas wolny w czasie pandemii w perspektywie młodzieży ostatnich klas szkoły podstawowej – wybrane aspekty . . . . . . . . . . 245 WERONA KRÓL-GIERAT, VERA SAVIĆ, The diverse linguistic attainment and attitude development of children learning English as a foreign language in inclusive classes . . . . . . . . 261 DAMIAN LABIAK, Młodzi nauczyciele muzyki wobec wyzwań swojej profesji. Komunikat z badań . . . . . . 289 DOROTA RUSZKIEWICZ, Rodzeństwo w roli rodzicielskiej . . . . . . . 309
description: Dynamiczny rozwój współczesnego świata, wyznaczony globalnymi trendami, w tym także nowymi technologiami stawia przed pedagogiką i wychowaniem nowe zadania. Na plan pierwszy wysuwają się m.in. następujące zagadnienia: prawa człowieka, dialog międzykulturowy, godność, wolność, a także odpowiedzialność indywidualna i społeczna człowieka. Celem opracowania jest zwrócenie uwagi na kluczową kwestię, tj. odpowiedzialności, widzianej w perspektywie wychowawczej, ponieważ stanowi ona wartość w życiu każdego człowieka i społeczeństwa.
A simple one dimensional glassy Kac model
Creators: name: Montanari, Andrea
name: Sinton, Antoine
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We define a new family of random spin models with one-dimensional structure, finite-range multi-spin interactions, and bounded average degree (number of interactions in which each spin participates). Unfrustrated ground states can be described as solutions of a sparse, band diagonal linear system, thus allowing for efficient numerical analysis. In the limit of infinite interaction range, we recover the so-called XORSAT (diluted p-spin) model, that is known to undergo a random first order phase transition as the average degree is increased. Here we investigate the most important consequences of a large but finite interaction range: (i) Fluctuation-induced corrections to thermodynamic quantities; (ii) The need of an inhomogeneous (position dependent) order parameter; (iii) The emergence of a finite mosaic length scale. In particular, we study the correlation length divergence at the (mean-field) glass transition.
description: 25 pages, 9 eps figures
Passive sub-ambient cooling: radiative cooling versus evaporative cooling
Creators: name: Aili, Ablimit
name: Yin, Xiaobo
name: Yang, Ronggui
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Day-and-night radiative sky cooling has emerged as a potential alternative to conventional cooling technologies such as refrigeration-based air conditioning and evaporative wet cooling. Both radiative cooling and evaporative cooling can passively achieve sub-ambient cooling without consuming electricity. Although both cooling techniques are subject to impacts from various weather conditions, the extents of the impacts under the same conditions are not well understood. In this work, we experimentally and theoretically study the thermal performances of a passive radiative cooler and a passive evaporative cooler when exposed to a clear night sky. We show that evaporative cooling is better suited for high-temperature and low-humidity weather conditions, with the measured sub-ambient temperatures of the radiative and evaporative coolers being -13.5°C and -15.0°C, respectively, at a low relative humidity of 13% and a high ambient temperature of 26.0°C. On the other hand, radiative cooling is relatively more resilient than evaporative cooling under high-humidity and/or low-temperature weather conditions, with the measured sub-ambient temperatures of the coolers being -11.5°C and -10.5°C, respectively, at a slightly higher relative humidity of 32.0% and a slightly lower ambient temperature of 17.0°C. Depending on water availability and weather conditions, both evaporative cooling and radiative cooling can be adopted as mutually supplemental cooling technologies.
description: 26 pages, 8 figures
A Short History of Agricultural Adjustment, 1933-75
Creators: name: Rasmussen, Wayne D.
name: Baker, Gladys L.
name: Ward, James S.
name: Rasmussen, Wayne D.
name: Baker, Gladys L.
name: Ward, James S.
Publisher: name: Unknown
Year: 1976
Subjects: subject: Agricultural and Food Policy
subject: Agricultural adjustment
subject: price support
subject: legislation
subject: agricultural policy

description: Many programs of the U.S. Department of Agriculture, particularly those concerned with supporting the prices of farm products and encouraging farmers to adjust production to demand, were initiated by interrelated laws passed by the Congress from 1933 to 1975. This report attempts to provide an overall view, showing how Congress modified legislation to meet changing economic situations, and giving a historical background on program development. It should serve as background for persons concerned with analyzing present farm programs.
Superuniversality in phase-ordering disordered ferromagnets
Creators: name: Henkel, Malte
name: Pleimling, Michel
Publisher: name: arXiv
Year: 2008
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The phase-ordering kinetics of the ferromagnetic two-dimensional Ising model with uniform bond disorder is investigated by intensive Monte Carlo simulations. Simple ageing behaviour is observed in the single-time correlator and the two-time responses and correlators. The dynamical exponent z and the autocorrelation exponent lambda_C only depend on the ratio eps/T, where eps describes the width of the distribution of the disorder, whereas a more complicated behaviour is found for the non-equilibrium exponent a of the two-time response as well as for the autoresponse exponent lambda_R. The scaling functions are observed to depend only on the dimensionless ratio eps/T. If the length scales are measured in terms of the time-dependent domain size L(t), the form of the scaling functions is in general independent of both eps and T. Conditions limiting the validity of this `superuniversality' are discussed.
description: Latex2e, 10pp with 8 figures included, PR macros
Underground Muon Counters as a Tool for Composition Analyses
Creators: name: Supanitsky, A. D.
name: Etchegoyen, A.
name: Medina-Tanco, G.
name: Allekotte, I.
name: Berisso, M. Gómez
name: Medina, M. C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The transition energy from galactic to extragalactic cosmic ray sources is still uncertain, but it should be associated either with the region of the spectrum known as the second knee or with the ankle. The baseline design of the Pierre Auger Observatory was optimized for the highest energies. The surface array is fully efficient above $3 \times 10^{18}$ eV and, even if the hybrid mode can extend this range below $10^{18}$ eV, the second knee and a considerable portion of the wide ankle structure are left outside its operating range. Therefore, in order to encompass these spectral features and gain further insight into the cosmic ray composition variation along the transition region, enhancements to the surface and fluorescence components of the baseline design are being implemented that will lower the full efficiency regime of the Observatory down to $\sim 10^{17}$ eV. The surface enhancements consist of a graded infilled area of standard Auger water Cherenkov detectors deployed in two triangular grids of 433 m and 750 m of spacing. Each surface station inside this area will have an associated muon counter detector. The fluorescence enhancement, on the other hand, consists of three additional fluorescence telescopes with higher elevation angle ($30^\circ-58^\circ$) than the ones in operation at present. The aim of this paper is threefold. We study the effect of the segmentation of the muon counters and find an analytical expression to correct for the under counting due to muon pile-up. We also present a detailed method to reconstruct the muon lateral distribution function for the 750 m spacing array. Finally, we study the mass discrimination potential of a new parameter, the number of muons at 600 m from the shower axis, obtained by fitting the muon data with the above mentioned reconstruction method.
description: Astroparticle Physics 29 (2008) 461-470
Asymptotic integration and dispersion for hyperbolic equations
Creators: name: Matsuyama, Tokio
name: Ruzhansky, Michael
Publisher: name: arXiv
Year: 2007
Subjects: subject: Analysis of PDEs (math.AP)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 35L05; 35L10

description: The aim of this paper is to establish time decay properties and dispersive estimates for strictly hyperbolic equations with homogeneous symbols and with time-dependent coefficients whose derivatives are integrable. For this purpose, the method of asymptotic integration is developed for such equations and representation formulae for solutions are obtained. These formulae are analysed further to obtain time decay of Lp-Lq norms of propagators for the corresponding Cauchy problems. It turns out that the decay rates can be expressed in terms of certain geometric indices of the limiting equation and we carry out the thorough analysis of this relation. This provides a comprehensive view on asymptotic properties of solutions to time-perturbations of hyperbolic equations with constant coefficients. Moreover, we also obtain the time decay rate of the Lp-Lq estimates for equations of these kinds, so the time well-posedness of the corresponding nonlinear equations with additional semilinearity can be treated by standard Strichartz estimates.
description: 30 pages
Entropy for spherically symmetric, dynamical black holes from the relative entropy between coherent states of a scalar quantum field
Creators: name: D'Angelo, Edoardo
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The goal of this paper is to prove an area law for the entropy of dynamical, spherically symmetric black holes from the relative entropy between coherent states of the quantum matter, generalising the results by Hollands and Ishibashi on the relative entropy on a Schwarzschild background. We consider the relative entropy between a coherent state and a suitably chosen asymptotically vacuum state for a scalar quantum field theory propagating over a dynamical black hole. We use the conservation law associated to the Kodama vector field in spherically symmetric spacetimes, and the results on the entropy of coherent states in flat spacetimes found by Longo, and Casini, Grillo, and Pontiello. We consider the back-reaction of the quantum matter on the metric in a region $\mathscr O$ outside the black hole. From the conservation law associated with the Kodama vector field, we obtain an equation in the form $(S + A/4)' =Φ$, where $S$ is the relative entropy between coherent states of the scalar field, $A$ is the apparent horizon area, and $Φ$ is the flux radiated at infinity. The prime denotes a derivative along the outgoing light-rays.
The new $(g-2)_μ$ and Right-Handed Sneutrino Dark Matter
Creators: name: Kim, Jong Soo
name: Lopez-Fogliani, Daniel E.
name: Perez, Andres D.
name: de Austri, Roberto Ruiz
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper we investigate the $(g-2)_μ$ discrepancy in the context of the R-parity conserving next-to-minimal supersymmetric Standard Model plus right-handed neutrinos superfields. The model has the ability to reproduce neutrino physics data and includes the interesting possibility to have the right-handed sneutrino as the lightest supersymmetric particle and a viable dark matter candidate. Since right-handed sneutrinos are singlets, no new contributions for $δa_μ$ with respect to the MSSM and NMSSM are present. However, the possibility to have the right-handed sneutrino as the lightest supersymmetric particle opens new ways to escape Large Hadron Collider and direct detection constraints. In particular, we find that dark matter masses within $10 \lesssim m_{\tildeν_{R}} \lesssim 600$ GeV are fully compatible with current experimental constraints. Remarkably, not only spectra with light sleptons are needed, but we obtain solutions with $m_{\tildeμ} \gtrsim 600$ GeV in the entire dark matter mass range that could be probed by new $(g-2)_μ$ data in the near future. In addition, dark matter direct detection experiments will be able to explore a sizable portion of the allowed parameter space with $m_{\tildeν_{R}} \lesssim 300$ GeV, while indirect detection experiments will be able to probe a much smaller fraction within $200 \lesssim m_{\tildeν_{R}} \lesssim 350$ GeV.
description: Version published in Nucl. Phys. B. Discussions expanded, appendix B and references added. 29 pages, 9 figures, 2 tables. Analysis of the viability of RH sneutrino as dark matter carried out in arXiv:2102.08986
Long-term Photometric Analysis of the Active W UMa-type System TU Bootis
Creators: name: Coughlin, Jeffrey L.
name: Dale, Horace A.
name: Williamon, Richard M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present multi-color light curves for the W UMa-type eclipsing binary TU Boo for two epochs separated by 22 years. An analysis of the O-C diagram indicates the earlier observations took place right in the middle of a major period change, thus allowing for a unique study on mass transfer and period changes in this W UMa-type system. We compute model fits to our light curves, along with the only other published set, using the Wilson-Devinney program, and find temporally correlated changes in the size of the secondary component with anomalies in the O-C diagram. We investigate the cause of these changes and find support for the existence of rapid, large-scale mass transfer between the components. We postulate that this interaction allows them to maintain nearly equal surface temperatures despite having achieved only marginal contact. We also find support for the evolutionary scenario in which TU Boo has undergone a mass ratio reversal in the past due to large-scale mass transfer so that what is presently the secondary component of TU Boo is in an advanced evolutionary state, oversized due to a helium-enriched core, with a total system age of $\geq$ 10 Gyr.
description: Accepted to AJ, 9 pages of text, 6 Figures
Meta-Stable Brane Configurations with Five NS5-Branes
Creators: name: Ahn, Changhyun
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: From an N=1 supersymmetric electric gauge theory with the gauge group SU(N_c) x SU(N_c') with fundamentals for each gauge group, the bifundamentals and a symmetric flavor and a conjugate symmetric flavor for SU(N_c), we apply Seiberg dual to each gauge group independently and obtain two N=1 supersymmetric dual magnetic gauge theories with dual matters including the gauge singlets. By analyzing the F-term equations of the dual magnetic superpotentials, we describe the intersecting brane configurations of type IIA string theory corresponding to the meta-stable nonsupersymmetric vacua of these gauge theories. The case where the above symmetric flavor is replaced by an antisymmetric flavor is also discussed.
description: 28 pp, 7 figures; the discussions for stability in pages 12, 15, 22, 26 added; Eight footnotes added; to appear in IJMPA
VLBA determinations of the distances to nearby star-forming regions
Creators: name: Loinard, Laurent
name: Torres, Rosa M.
name: Mioduszewski, Amy J.
name: Rodriguez, Luis F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using phase-referenced multi-epoch Very Long Baseline Array observations, we have measured the trigonometric parallax of several young stars in the Taurus and Ophiuchus star-forming regions with unprecedented accuracy. The mean distance to the Taurus complex was found to be about 140 pc, and its depth around 20 pc, comparable to the linear extent of Taurus on the plane of the sky. In Ophiuchus, 4 sources were observed so far. Two of them were found to be at about 160 pc (the distance traditionally attributed to Ophiuchus), while the other 2 are at about 120 pc. Since the entire Ophiuchus complex is only a few parsecs across, this difference is unlikely to reflect the depth of the region. Instead, we argue that two physically unrelated sites of star-formation are located along the line of sight toward Ophiuchus.
description: 4 pages, IAU248 meeting proceedings. The results on the Ophiuchus core were published in ApJ 675, L29, 2008
Approximation of the Semigroup generated by the Robin Laplacian in terms of the Gaussian Semigroup
Creators: name: Nittka, Robin
Publisher: name: arXiv
Year: 2008
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 47A58, 35K20 (Primary) 47D06 (Secondary)

description: For smooth bounded open sets in euclidean space, we construct corresponding contractive linear extension operators for the space of continuous functions which preserve regularity of functions in the domain of the Robin Laplacian. We also prove a Trotter-like approximation for the semigroup generated by the Laplacian subject to Robin boundary conditions in terms of these extension operators. The limiting case of Dirichlet boundary conditions is treated separately.
description: 16 pages, no figures
Reduced in vitro IgG secretion following in vivo injection of interferon (wellferon R) in multiple sclerosis patients
Creators: name: O’Gorman, Maurice R. G.
Publisher: name: University of British Columbia
Year: 2010

description: An in vitro IgG secretion assay was developed to investigate the regulation of the humoral immune response in humans. Pokeweed mitogen (PWM), a plant lectin derived from Phytolacca americana stimulates human peripheral blood mononuclear cells (PBMNC) to divide and resting B-lymphocytes to differentiate into immunoglobulin secreting cells (ISC). This differentiation requires that both monocytes and T-lymphocytes be present in the culture system. The amount of IgG secreted by these differentiated B-lymphocytes in response to PWM appears to be the net result of a balance between the functional activity of the regulatory T-helper and T-suppressor cells. Alterations, qualitative or quantitative in any of these leukocyte subsets could conceivably alter the amount of IgG secreted by the B-lymphocyte subpopulation. We have employed this assay to investigate the immune status in a group of chronic progressive multiple sclerosis (MS) patients and to assess the immunoregulatory effects of interferon (Wellferon R, INF) administered in vivo to this selected group. Their mononuclear cells (MNC) were studied in this PWM induced IgG secretion assay before INF treatment and again after 7 days of daily sub-cutaneous injections (5 X 10⁶ u/day). Twenty patients received the interferon (INF) preparation and eighteen received normal saline. The study was carried out in a double blind manner and the code was broken only after individual results had been calculated.
Realizing spatiotemporal effective media for acoustic metamaterials
Creators: name: Wen, Xinhua
name: Zhu, Xinghong
name: Wu, Hong Wei
name: Li, Jensen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: The effective medium representation is fundamental in providing a performance-to-design approach for many devices based on metamaterials. While there are recent works in extending the effective medium concept into the temporal domain, a direct implementation is still missing. Here, we construct an acoustic metamaterial dynamically switching between two different configurations with a time-varying convolution kernel, which can now incorporate both frequency dispersion of metamaterials and temporal modulation. We establish the effective medium formula in temporally averaging the compressibilities, densities and even Willis coupling parameters of the two configurations. A phase disorder between the modulation of different atoms is found negligible on the effective medium. Our realization enables a high-level description of metamaterials in the spatiotemporal domain, making many recent proposals, such as magnet-free non-reciprocity, broadband slow-light and Fresnel drag using spatiotemporal metamaterials possible for implementations in future.
description: 17 pages, 4 figures
Fifteen Years of High-Resolution Radio Imaging of Supernova 1987A
Creators: name: Gaensler, B. M.
name: Staveley-Smith, L.
name: Manchester, R. N.
name: Kesteven, M. J.
name: Ball, L.
name: Tzioumis, A. K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Supernova 1987A in the Large Magellanic Cloud provides a spectacularly detailed view of the aftermath of a core-collapse explosion. The supernova ejecta initially coasted outward at more than 10% of the speed of light, but in 1990 were observed to decelerate rapidly as they began to encounter dense circumstellar material expelled by the progenitor star. The resulting shock has subsequently produced steadily brightening radio synchrotron emission, which is resolved by the Australia Telescope Compact Array (ATCA) into an expanding limb-brightened shell. Here we present 15 years of ATCA imaging of Supernova 1987A, at an effective angular resolution of 0.4 arcsec. We find that the radio remnant has accelerated in its expansion over this period, from approx 3600 km/s in 1992 to approx 5200 km/s at the end of 2006. The published diameters of the evolving X-ray shell have been ~15% smaller than the corresponding radio values, but a simultaneous Fourier analysis of both radio and X-ray data eliminates this discrepancy, and yields a current diameter for the shell in both wave-bands of approx 1.7 arcsec. An asymmetric brightness distribution is seen in radio images at all ATCA epochs: the eastern and western rims have higher fluxes than the northern and southern regions, indicating that most of the radio emission comes from the equatorial plane of the system, where the progenitor star's circumstellar wind is thought to be densest. The eastern lobe is brighter than and further from the supernova site than the western lobe, suggesting an additional asymmetry in the initial distribution of supernova ejecta.
description: 10 pages, including 7 b/w + 1 color embedded EPS figures; uses aipproc.cls . To appear in "Supernova 1987A: Twenty Years After: Supernovae and Gamma-Ray Bursters", edited by S. Immler, K. W. Weiler and R. McCray, American Institute of Physics, New York, 2007, in press. Updated figure 2
ความหลากหลายของจุลินทรีย์ดินในแปลงหม่อนที่เกิดโรครากเน่าและการตรวจหาเชื้อสาเหตุโรคโดยใช้ไพรเมอร์จำเพาะ
Creators: name: วราภรณ์  สุทธิสา
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2019
Subjects: Soil Microorganisms
Specific Primer
Mulberry Root Rot

description: วารสารวิชาการและวิจัย มทร.พระนคร สาขาวิทยาศาสตร์และเทคโนโลยี, 13, 1, 158-169
Taxonomizing local versus global structure in neural network loss landscapes
Creators: name: Yang, Yaoqing
name: Hodgkinson, Liam
name: Theisen, Ryan
name: Zou, Joe
name: Gonzalez, Joseph E.
name: Ramchandran, Kannan
name: Mahoney, Michael W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Viewing neural network models in terms of their loss landscapes has a long history in the statistical mechanics approach to learning, and in recent years it has received attention within machine learning proper. Among other things, local metrics (such as the smoothness of the loss landscape) have been shown to correlate with global properties of the model (such as good generalization performance). Here, we perform a detailed empirical analysis of the loss landscape structure of thousands of neural network models, systematically varying learning tasks, model architectures, and/or quantity/quality of data. By considering a range of metrics that attempt to capture different aspects of the loss landscape, we demonstrate that the best test accuracy is obtained when: the loss landscape is globally well-connected; ensembles of trained models are more similar to each other; and models converge to locally smooth regions. We also show that globally poorly-connected landscapes can arise when models are small or when they are trained to lower quality data; and that, if the loss landscape is globally poorly-connected, then training to zero loss can actually lead to worse test accuracy. Our detailed empirical results shed light on phases of learning (and consequent double descent behavior), fundamental versus incidental determinants of good generalization, the role of load-like and temperature-like parameters in the learning process, different influences on the loss landscape from model and data, and the relationships between local and global metrics, all topics of recent interest.
การดูดซับทางชีวภาพฟอสเฟตด้วยกากมันสำปะหลังดัดแปร
Creators: name: สุดารัตน์  สมบัติศรี
Publisher: name: มหาวิทยาลัยเทคโนโลยีราชมงคลอีสาน
Year: 2019
Subjects: Biosorption
Modified Cassava Waste
Phosphate
Adsorption Isotherm

description: วารสารวิชาการและวิจัย มทร.พระนคร สาขาวิทยาศาสตร์และเทคโนโลยี, 13, 1, 170-179
การผลิตและคุณลักษณะของแบคทีเรียลเซลลูโลสที่ผลิตด้วย Acetobacter xylinum TISTR 975 จากน้ำคั้นเปลือกสับปะรด
Creators: name: อดิศักดิ์ จตุรพิรีย์
Publisher: name: มหาวิทยาลัยราชภัฏนครปฐม
Year: 2019
Subjects: Bacterial cellulose
Acetobacter xylinum
pineapple peel

description: วารสารวิชาการและวิจัย มทร.พระนคร สาขาวิทยาศาสตร์และเทคโนโลยี, 13, 1, 180-191
Strategies for Balanced Rural-Urban Growth
Creators: name: Edwards, Clark
name: Edwards, Clark
Publisher: name: Unknown
Year: 1976
Subjects: Community/Rural/Urban Development
Research and Development/Tech Change/Emerging Technologies
Research Methods/ Statistical Methods

description: Excerpted from the report Highlights: Trends in population, income, employment, and capital during 1960-70 were leading to equal per capita incomes between the nonmetropolitan and metropolitan sectors of the United States by the year 2000 and to abatement of the exodus of people from rural America. Changes from these trends in the early 1970's point to accelerated growth for rural areas compared to the 1960's, but suggest continued rural-urban imbalances with regard to unemployment levels and income per capita. Analyzed are seven types of development strategies directed at achieving rural-urban balance by 1990. Each strategy explored has some potential for raising nonmetropolitan income; but each in isolation displays undesirable side effects on migration, dependency, unemployment, wages, or the level of general business activity. A multifaceted problem requires a mixed strategy. A mixed strategy which promotes joining the labor force, creating jobs, and increasing resource productivity can stimulate nonmetropolitan growth with few undesired side effects. Strategies which enhance capital accumulation and expand markets have limited benefits. Those which directly influence migration or natural population increase are not required.
Ülevaade: Põllumajandusliku masinapargi arengud Eestis ajavahemikul 2010–2018
Creators: name: Olt, Jüri
name: Ilves, Risto
name: Küüt, Arne
Publisher: name: Agraarteadus
Year: 2019
Subjects: tractor
combine harvester
engine power
productivity
article

description: The aim of the current research is to provide an overview of the trends in the park of agricultural machinery in Estonia during the period 2010–2018. For this purpose, data obtained from the registers of Agriculture and Transport of Statistics Estonia have been used. The article outlines, firstly, changes in the number of agricultural holdings by the size of arable land and growing area of grain, secondly, changes in the number of tractors and grain harvesters, including the number of new tractors and harvesters sold over the years, thirdly, the preferences of holdings for tractors and grain harvesters, and fourthly, the categorization of new tractors and grain harvesters by the manufacturing company in the given time period. What is more, developments concomitant with trends in the park of agricultural machinery have been described.
Identification of silicon vacancy-related electron paramagnetic resonance centers in 4H SiC
Creators: name: Csóré, A.
name: Son, N. T.
name: Gali, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The negatively charged silicon vacancy [V$_\text{Si}(-)$] in silicon carbide (SiC) is a paramagnetic and optically active defect in hexagonal SiC. V$_\text{Si}(-)$ defect possesses $S = 3/2$ spin with long spin coherence time and can be optically manipulated even at room temperature. Recently, electron spin resonance signals have been observed besides the signals associated with the V$_\text{Si}(-)$ defects in the 4H polytype of SiC. The corresponding centers share akin properties to those of the V$_\text{Si}(-)$ defects and thus they may be promising candidates for quantum technology applications. However, the exact origin of the new signals is unknown. In this paper we report V$_\text{Si}(-)$-related pair defect models as possible candidates for the unknown centers. We determine the corresponding electronic structures and magneto-optical properties as obtained by density functional theory (DFT) calculations. We propose models for the recently observed electron paramagnetic resonance centers with predicting their optical signals for identification in future experiments.