cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Radial Velocity of the Phoenix Dwarf Galaxy: Linking Gas and Hi Gas
Creators: name: Gallart, C.
name: Martinez-Delgado, D.
name: Gomez-Flechoso, M. A.
name: Mateo, Mario
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the first radial velocity measurement of the stellar component of the Local Group dwarf galaxy Phoenix, using FORS1 at the VLT UT1 (ANTU) telescope. From the spectra of 31 RGB stars, we derive an heliocentric optical radial velocity of Phoenix Vo=-52 +/- 6 \kms. On the basis of this velocity, and taking into account the results of a series of semi-analytical and numerical simulations, we discuss the possible association of the HI clouds observed in the Phoenix vicinity. We conclude that the characteristics of the HI cloud with heliocentric velocity --23 \kms are consistent with this gas having been associated with Phoenix in the past, and lost by the galaxy after the last event of star formation in the galaxy, about 100 Myr ago. Two possible scenarios are discussed: the ejection of the gas by the energy released by the SNe produced in that last event of star formation, and a ram-pressure stripping scenario. Both in the SNe ejection case and in the ram-pressure sweeping scenario, the distances and relative velocities imply that the HI cloud is not gravitationally bound to Phoenix, since this would require a Phoenix total mass about an order of magnitude larger than its total estimated mass. Finally, we discuss the possibility that Phoenix may be a bound Milky Way satellite. The minimum required mass of the Milky Way for Phoenix to be bound is $M_{MW}(<450 {\rm kpc}) \ge 1.2 \times 10^{12}$ M$_{\odot}$ which comfortably fits within most current estimates.
description: 17 pages, 8 figures, accepted for publication in Astronomical Journal
Low-frequency electromagnetic radiation of hydrogen molecular gas: effect of the ortho-para conversion
Creators: name: Ishkhanyan, A. M.
name: Krainov, V. P.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We calculate the rate of the spontaneous magnetic dipole radiation transitions from ortho- to para-states of the hydrogen molecule at the room temperature with the radiation wavelengths about 0.01 - 0.1 cm. Exponentially small differences between the rotational energies and heat capacities of parahydrogen and orthohydrogen molecules and also diatomic molecules consisting of different hydrogen atoms for high temperatures are derived.
The structure of non-spacelike geodesics in dust collapse
Creators: name: Deshingkar, S. S.
name: Joshi, P. S.
Publisher: name: arXiv
Year: 2000
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study here the behaviour of non-spacelike geodesics in dust collapse models in order to understand the casual structure of the spacetime. The geodesic families coming out, when the singularity is naked, corresponding to different initial data are worked out and analyzed. We also bring out the similarity of the limiting behaviour for different types of geodesics in the limit of approach to the singularity.
description: 23 pages, 6 figures, to appear in PRD
Proof-of-principle demonstration of vertical gravity gradient measurement using a single proof mass double-loop atom interferometer
Creators: name: Perrin, Isadora
name: Cadoret, Malo
name: Bidel, Yannick
name: Zahzam, Nassim
name: Blanchard, Cedric
name: Bresson, Alexandre
Publisher: name: arXiv
Year: 2018
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We demonstrate a proof-of-principle of direct Earth gravity gradient measurement with an atom interferometer-based gravity gradiomter using a single proof mass of cold 87 rubidium atoms. The atomic gradiometer is implemented in the so-called double-loop configuration, hence providing a direct gravity gradient dependent phase shift insensitive do DC acceleration and constant rotation rate. The atom interferometer (AI) can be either operated as a gravimeter or a gradiomter by simply adding an extra Raman $π$-pulse. We demonstrate gravity gradient measurements first using a vibration isolation platform and second without seismic isolation using the correlation between the AI signal and the vibration signal measured by an auxilliary classical accelerometer. The simplicity of the experimental setup (a single atomic source and unique detection) and the immunity of the AI to rotation-induced contrast loss, make it a good candidate for onboard gravity gradient measurements.
description: 11 pages, 7 figures
Periodic Vortex Structures in Superfluid 3He-A
Creators: name: Karimaki, J. M.
name: Thuneberg, E. V.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We discuss the general properties of periodic vortex arrangements in rotating superfluids. The different possible structures are classified according to the symmetry space-groups and the circulation number. We calculate numerically several types of vortex structures in superfluid 3He-A. The calculations are done in the Ginzburg-Landau region, but the method is applicable at all temperatures. A phase diagram of vortices is constructed in the plane formed by the magnetic field and the rotation velocity. The characteristics of the six equilibrium vortex solutions are discussed. One of these, the locked vortex 3, has not been considered in the literature before. The vortex sheet forms the equilibrium state of rotating 3He-A at rotation velocities exceeding 2.6 rad/s. The results are in qualitative agreement with experiments.
description: 13 pages, 7 figures, http://boojum.hut.fi/research/theory/diagram.html
Bactrocera (Bulladacus) unipunctata
Creators: name: Leblanc, Luc
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Tephritidae
Bactrocera
Bactrocera unipunctata

description: Bactrocera (Bulladacus) unipunctata (Malloch, 1939)
Figure 86
 Distribution. Solomon Islands (Florida).
 Male lure. No known lure.
 Host plants. No known host.
 Notes. This species is known only from the damaged teneral male holotype, collected nearly a century ago. Drew and Hancock (2016) tentatively reassigned it to subgenus Bulladacus, based on a combination of characters typical of that subgenus, but were unable to confirm the presence of a bulla on the wing.
description: Published as part of Leblanc, Luc, 2022, The dacine fruit flies (Diptera: Tephritidae: Dacini) of Oceania, pp. 1-167 in Insecta Mundi 2022 (948) on page 146, DOI: 10.5281/zenodo.7300862
Nonreciprocal interactions in crowd dynamics: investigating the impact of moving threats on pedestrian speed preferences
Creators: name: Xie, Shaocong
name: Ye, Rui
name: Li, Xiaolian
name: Huang, Zhongyi
name: Cao, Shuchao
name: Lv, Wei
name: He, Hong
name: Zhang, Ping
name: Fang, Zhiming
name: Zhang, Jun
name: Song, Weiguo
Publisher: name: arXiv
Year: 2024
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Nonreciprocal interaction crowd systems, such as human-human, human-vehicle, and human-robot systems, often have serious impacts on pedestrian safety and social order. A more comprehensive understanding of these systems is needed to optimize system stability and efficiency. Despite the importance of these interactions, empirical research in this area remains limited. Thus, in our study we explore this underresearched area, focusing on scenarios where nonreciprocity plays a critical role, such as mass stabbings, which pose a substantial risk to public safety. We conducted the first experiments on this system and analysed high-accuracy data obtained from these experiments. The extent of the direct threat zone is determined by the speed of the moving threat and the radius of danger occurrence. We further categorize potential threats into direct, adjacent, and rear-view zones, quantifying the level of threat for pedestrians. Our study revealed that a pedestrian's desired velocity correlated positively with potential threat intensity, increasing until near the direct threat zone. An emerging steady state is observed when escape routes are blocked by moving threats. This deviation affects the density-velocity relationship, making it distinct from the general relationship. This deviation signifies unique pedestrian behaviour in the presence of moving threats. Additionally, the rate of change in the angle for pedestrian motion in various desired directions is synchronized. This indicates the emergence of collective intelligence in nonreciprocal interaction crowd systems. As a result, our study may constitute a pioneering step towards understanding nonreciprocal interactions in crowd systems through laboratory experiments. These findings may enhance pedestrian safety and inform not only government crowd management strategies but also individual self-protection measures.
Volume-Collapse Transitions in the Rare Earth Metals
Creators: name: McMahan, A. K.
name: Huscroft, C.
name: Scalettar, R. T.
name: Pollock, E. L.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We describe current experimental and theoretical understanding of the pressure-induced volume collapse transitions occurring in the early trivalent rare earth metals. General features of orbitally realistic mean-field based theories used to calculate these transitions are discussed. Potential deficiencies of these methods are assessed by comparing mean field and exact Quantum Monte Carlo solutions for the one-band Hubbard and two-band periodic Anderson lattice models. Relevant parameter regimes for these models are determined from local density constrained occupation calculations.
description: 20 pages, 17 figures, LaTeX
Does neighborhood crime matter? A multi-year survey study on perceptions of race, victimization, and public safety
Creators: name: Cho, Wonhyuk
name: Ho, AT
Publisher: name: Open Access Victoria University of Wellington | Te Herenga Waka
Year: 2021
Subjects: subject: Law
subject: FOS: Law

description: Using multiple large datasets over time from Kansas City, Missouri, hypotheses drawn from theories of racial stereotype amplification, violence desensitization, and dissimilar group threat are tested. The results show that White Americans that live in Black or Hispanic neighborhoods tend to feel less satisfied with public safety, even after controlling for actual crime rates, physical signs of disorder, and a neighborhood's socioeconomic context. However, racial minority residents living in White or minority neighborhoods do not have the same inflated fear. Further, on the issue of race-of-victim effects, the White victimization rate in neighborhoods is found to be negatively associated with public safety perception, whereas the victimization of Blacks has no statistically significant impact. We also found that individuals in Black neighborhood show lower levels of sensitivity to fear of victimization, implying that chronic exposure to neighborhood crime may lead to desensitization.
EIRENE PPP D6.2 - Education & Training Strategy (currently being reviewed by the EC)
Creators: name: Bergman, Ake
Publisher: name: Zenodo
Year: 2024

description: The training strategy will aim at establishing an EIRENE training network as a tool for the education and training of excellent scientists, a new generation of RI operators and technicians, as well as service managers. The objective is to provide excellence in EIRENE but also extend to external networks and interested parties, as well as large-scale projects both in Europe and globally.
Formation of contact in massive close binaries
Creators: name: Wellstein, S.
name: Langer, N.
name: Braun, H.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present evolutionary calculations for 74 close binaries systems with initial primary masses in the range 12...25 M_sun, and initial secondary masses between 6 and 24 M_sun. The initial periods were chosen such that mass overflow starts during the core hydrogen burning phase of the primary (Case A), or shortly thereafter (Case B). We assume conservative evolution for contact-free systems, i.e., no mass or angular momentum loss from those system except due to stellar winds. We investigate the borderline between contact-free evolution and contact, as a function of the initial system parameters. We also investigate the effect of the treatment of convection, and found it relevant for contact and supernova order in Case A systems, particularly for the highest considered masses. For Case B systems we find contact for initial periods above approximate 10 days and below. However, in that case (and for not too large periods) contact occurs only after the mass ratio has been reversed, due to the increased fraction of the donor's convective envelope. As most In all Cases we find contact for mass ratios below approximate 0.65. We derive the observable properties of our systems after the major mass transfer event, where the mass gainer is a main sequence or supergiant O or early B type star, and the mass loser is a helium star. We point out that the assumption of conservative evolution for contact-free systems could be tested by finding helium star companions to O stars.
description: 19 pages, 14 figures, accepted by A&A
Additional file 1 of Periconceptional stressors and social support and risk for adverse birth outcomes
Creators: name: Weber, Kari A.
name: Carmichael, Suzan L.
name: Yang, Wei
name: Tinker, Sarah C.
name: Shaw, Gary M.
Publisher: name: figshare
Year: 2020
Subjects: Medicine
Cell Biology
Pharmacology
Biotechnology
Science Policy
Computational Biology

description: Additional file 1. Questions Related to Stressful Life Events and Social Support in the National Birth Defects Prevention Study from 3 months before pregnancy through the 3rd month of pregnancy.
E-government 4.0 in Thailand: The role of central agencies
Creators: name: Sagarik, D
name: Chansukree, P
name: Cho, Wonhyuk
name: Berman, Evan
Publisher: name: Open Access Victoria University of Wellington | Te Herenga Waka
Year: 2021
Subjects: Uncategorized

description: This study discusses Thailand's digital transformation efforts with a focus on the leadership roles of its central government agencies. Thailand has progressed through various e-government policy frameworks since the 1990s, and the current military government is implementing a version '4.0' of digital transformation strategies, aiming to improve business competitiveness, citizen wellbeing, and public sector performance. Central government agencies were created or reorganized to deal with the 'silo-ization' or 'pillarization' of public organizations, as well as a need for hierarchical leadership and coordination. We discuss the challenges in maintaining reform leadership and accountability, legislation, interoperability, employee capabilities and performance management, and efforts by central agencies to address them.
Microscopic origin of the bolometric effect in graphene
Creators: name: Jago, Roland
name: Malic, Ermin
name: Wendler, Florian
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: While the thermoelectric and photoconduction effects are crucial in pristine and low-doped graphene, the bolometric effect is known to dominate the photoresponse in biased graphene. Here, we present a detailed microscopic investigation of the photoresponse due to the bolometric effect in graphene. Based on the semiconductor Bloch equations, we investigate the time- and momentumresolved carrier dynamics in graphene in the presence of a constant electric field under optical excitation. The magnitude of the bolometric effect is determined by the optically induced increase of temperature times the conductivity change. Investigating both factors independently, we reveal that the importance of the bolometric effect in the high-doping regime can be mostly ascribed to the latter showing a parabolic dependence on the doping.
Circulation in high Reynolds number isotropic turbulence is a bifractal
Creators: name: Iyer, Kartik P.
name: Sreenivasan, Katepalli R.
name: Yeung, P. K.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The turbulence problem at the level of scaling exponents is hard in part because of the multifractal scaling of small scales, which demands that each moment order be treated and understood independently. This conclusion derives from studies of velocity structure functions, energy dissipation, enstrophy density (that is, square of vorticity), etc. However, it is likely that there exist other physically pertinent quantities with uncomplicated structure in the inertial range, potentially resulting in huge simplifications in the turbulence theory. We show that velocity circulation around closed loops is such a quantity. By using a large databases of isotropic turbulence, generated from numerical simulations of the Navier-Stokes equations over a wide range of Reynolds numbers, we show that circulation exhibits a bifractal behavior at the highest Reynolds number considered: space filling for moments up to order $3$ and a mono-fractal with an unchanging dimension of about $2.5$ for higher orders; this change in character roughly at the third-order moment is reminiscent of a "phase transition". We explore the possibility that circulation becomes effectively space filling at much higher Reynolds numbers even though it may technically be regarded as a bifractal. We confirm that the circulation properties depend on only the area of the loop, not its shape; and, for a figure-$8$ loop, the relevant area is the scalar sum of the two segments of the loop.
description: 8 pages, 11 figures
Strong-Coupling Expansion for the Hubbard Model
Creators: name: Pairault, Stéphane
name: Sénéchal, David
name: Tremblay, A. -M. S.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A strong-coupling expansion for models of correlated electrons in any dimension is presented. The method is applied to the Hubbard model in $d$ dimensions and compared with numerical results in $d=1$. Third order expansion of the Green function suffices to exhibit both the Mott metal-insulator transition and a low-temperature regime where antiferromagnetic correlations are strong. It is predicted that some of the weak photoemission signals observed in one-dimensional systems such as $SrCuO_2$ should become stronger as temperature increases away from the spin-charge separated state.
description: 4 pages, RevTex, 3 epsf figures included
Gaps and Rings in an ALMA Survey of Disks in the Taurus Star-forming Region
Creators: name: Long, Feng
name: Pinilla, Paola
name: Herczeg, Gregory J.
name: Harsono, Daniel
name: Dipierro, Giovanni
name: Pascucci, Ilaria
name: Hendler, Nathan
name: Tazzari, Marco
name: Ragusa, Enrico
name: Salyk, Colette
name: Edwards, Suzan
name: Lodato, Giuseppe
name: van de Plas, Gerrit
name: Johnstone, Doug
name: Liu, Yao
name: Boehler, Yann
name: Cabrit, Sylvie
name: Manara, Carlo F.
name: Menard, Francois
name: Mulders, Gijs D.
name: Nisini, Brunella
name: Fischer, William J.
name: Rigliaco, Elisabetta
name: Banzatti, Andrea
name: Avenhaus, Henning
name: Gully-Santiago, Michael
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Rings are the most frequently revealed substructure in ALMA dust observations of protoplanetary disks, but their origin is still hotly debated. In this paper, we identify dust substructures in 12 disks and measure their properties to investigate how they form. This subsample of disks is selected from a high-resolution ($\sim0.12''$) ALMA 1.33 mm survey of 32 disks in the Taurus star-forming region, which was designed to cover a wide range of sub-mm brightness and to be unbiased to previously known substructures. While axisymmetric rings and gaps are common within our sample, spiral patterns and high contrast azimuthal asymmetries are not detected. Fits of disk models to the visibilities lead to estimates of the location and shape of gaps and rings, the flux in each disk component, and the size of the disk. The dust substructures occur across a wide range of stellar mass and disk brightness. Disks with multiple rings tend to be more massive and more extended. The correlation between gap locations and widths, the intensity contrast between rings and gaps, and the separations of rings and gaps could all be explained if most gaps are opened by low-mass planets (super-Earths and Neptunes) in the condition of low disk turbulence ($α=10^{-4}$). The gap locations are not well correlated with the expected locations of CO and N$_2$ ice lines, so condensation fronts are unlikely to be a universal mechanism to create gaps and rings, though they may play a role in some cases.
description: 23 pages, 11 figures, ApJ accepted
Perturbatively constructed cosmological model with periodically distributed dust inhomogeneities
Creators: name: Sikora, Szymon
name: Głód, Krzysztof
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We constructed a simple cosmological model which approximates the Einstein-de Sitter background with periodically distributed dust inhomogeneities. By taking the metric as a power series up to the third order in some perturbative parameter $λ$, we are able to achieve large values of the density contrast. With a metric explicitly given, many model properties can be calculated in a straightforward way which is interesting in the context of the current discussion concerning the averaging of the inhomogeneities and their backreaction in cosmology. Although the Einstein-de Sitter model can be thought as the model \emph{average}, the light propagation differs from that of the Einstein-de Sitter. The angular diameter distance-redshift relation is affected by the presence of inhomogeneities and depends on the observer's position. The model construction scheme enables some generalizations in the future, so the present work is a step towards more realistic cosmological model described by a relatively simple analytical metric.
A Lightweight Security Solution for Mitigation of Hatchetman Attack in RPL-based 6LoWPAN
Creators: name: Sharma, Girish
name: Grover, Jyoti
name: Verma, Abhishek
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: In recent times, the Internet of Things (IoT) has a significant rise in industries, and we live in the era of Industry 4.0, where each device is connected to the Internet from small to big. These devices are Artificial Intelligence (AI) enabled and are capable of perspective analytics. By 2023, it's anticipated that over 14 billion smart devices will be available on the Internet. These applications operate in a wireless environment where memory, power, and other resource limitations apply to the nodes. In addition, the conventional routing method is ineffective in networks with limited resource devices, lossy links, and slow data rates. Routing Protocol for Low Power and Lossy Networks (RPL), a new routing protocol for such networks, was proposed by the IETF's ROLL group. RPL operates in two modes: Storing and Non-Storing. In Storing mode, each node have the information to reach to other node. In Non-Storing mode, the routing information lies with the root node only. The attacker may exploit the Non-Storing feature of the RPL. When the root node transmits User Datagram Protocol~(UDP) or control message packet to the child nodes, the routing information is stored in the extended header of the IPv6 packet. The attacker may modify the address from the source routing header which leads to Denial of Service (DoS) attack. This attack is RPL specific which is known as Hatchetman attack. This paper shows significant degradation in terms of network performance when an attacker exploits this feature. We also propose a lightweight mitigation of Hatchetman attack using game theoretic approach to detect the Hatchetman attack in IoT.
On the Relationship Between the Pseudo- and Superconducting Gaps: Effects of Residual Pairing Correlations Below Tc
Creators: name: Kosztin, Ioan
name: Chen, Qijin
name: Janko, Boldizsar
name: Levin, K.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The existence of a normal state spectral gap in underdoped cuprates raises important questions about the associated superconducting phase. For example, how does this pseudogap evolve into its below Tc counterpart? In this paper we characterize this unusual superconductor by investigating the nature of the ``residual'' pseudogap below Tc and, find that it leads to an important distinction between the superconducting excitation gap and order parameter. Our approach is based on a conserving diagrammatic BCS Bose-Einstein crossover theory which yields the precise BCS result in weak coupling at any T
description: REVTeX, 4 pages, 1 EPS figure (included)
On different types of stability for linear delay dynamic equations
Creators: name: Braverman, Elena
name: Karpuz, Basak
Publisher: name: arXiv
Year: 2019
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 34K20, 34N05

description: We provide explicit conditions for uniform stability, global asymptotic stability and uniform exponential stability for dynamic equations with a single delay and a nonnegative coefficient. Some examples on nonstandard time scales are also given to show applicability and sharpness of the new results.
description: 33 pages
Zeugodacus (Javadacus) fuscipennulus
Creators: name: Leblanc, Luc
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Tephritidae
Zeugodacus
Zeugodacus fuscipennulus

description: Zeugodacus (Javadacus) fuscipennulus (Drew and Romig, 2001)
Figure 97
 Distribution. Solomon Islands (Kolombangara, New Georgia, Isabel, Guadalcanal, San Cristobal).
 Male lure. Cue-lure.
 Host plants. No known host.
description: Published as part of Leblanc, Luc, 2022, The dacine fruit flies (Diptera: Tephritidae: Dacini) of Oceania, pp. 1-167 in Insecta Mundi 2022 (948) on page 152, DOI: 10.5281/zenodo.7300862
title: A dimensão do desassossego
title: Bernardo Soares, o menor, e a sua epopeia pobre
titleType: Subtitle
Creators: name: Frias, Joana Matos
Publisher: name: IELT – Instituto de Estudos de Literatura e Tradição, Faculdade de Ciências Sociais e Humanas, Universidade NOVA de Lisboa
Year: 2018

description: A partir de um juízo difundido por Alfredo Margarido em ensaio publicado no importante n.º 88 da Colóquio/Letras dedicado a Pessoa em 1985, por ocasião do cinquentenário da sua morte – e no rescaldo do aparecimento em dois volumes do Livro do Desassossego editado por Jacinto do Prado Coelho, com Maria Aliete Galhoz e Teresa Sobral Cunha (1982), bem como do subsequente 2.º Congresso Internacional de Estudos Pessoanos (Nashville, 1983) –, procurar-se-á reconstituir e rever um conjunto de argumentos críticos que, na recepção portuguesa e na brasileira, de imediato se concertaram em torno desse evento editorial no sentido de menorizar o Livro e o seu Autor, apresentando-os como subprodutos da criação pessoana.
description: Frias, Joana Matos (2018). A dimensão do desassossego: Bernardo Soares, o menor, e a sua epopeia pobre. Revista Estranhar Pessoa, 5: 30–48. ISSN 2183-4075.
Machine Learning-Based Identification of Contaminated Images in Light Curves Data Preprocessing
Creators: name: Li, Hui
name: Li, Rong-Wang
name: Shu, Peng
name: Li, Yu-Qiang
Publisher: name: arXiv
Year: 2024
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Attitude is one of the crucial parameters for space objects and plays a vital role in collision prediction and debris removal. Analyzing light curves to determine attitude is the most commonly used method. In photometric observations, outliers may exist in the obtained light curves due to various reasons. Therefore, preprocessing is required to remove these outliers to obtain high quality light curves. Through statistical analysis, the reasons leading to outliers can be categorized into two main types: first, the brightness of the object significantly increases due to the passage of a star nearby, referred to as "stellar contamination," and second, the brightness markedly decreases due to cloudy cover, referred to as "cloudy contamination." Traditional approach of manually inspecting images for contamination is time-consuming and labor-intensive. However, We propose the utilization of machine learning methods as a substitute. Convolutional Neural Networks (CNN) and Support Vector Machines (SVM) are employed to identify cases of stellar contamination and cloudy contamination, achieving F1 scores of 1.00 and 0.98 on test set, respectively. We also explored other machine learning methods such as Residual Network-18 (ResNet-18) and Light Gradient Boosting Machine (lightGBM), then conducted comparative analyses of the results.
description: 12 pages, 15 figures
ҲАРБИЙ ХИЗМАТЧИЛАРНИНГ КАСБИЙ ФАОЛИЯТГА МОСЛАШУВИДА ПСИХОЛОГ ОЛИБ БОРАДИГАН ИШ ЙЎНАЛИШЛАРИ
Creators: name: Қурёзов Имомаддин Давлат ўғли Ўзбекистон Республикаси Жамоат хавфсизлигини  таъминлаш университети Магистратура факультети  тингловчиси, майор
Publisher: name: Zenodo
Year: 2024

description: Ҳар бир давлатнинг асосий вазифаларидан бири – жамиятни, умуман олганда, фуқароларни қуролланган ҳолда ҳимоялаш ҳисобланади. Шу сабаб давлатнинг мажбурий институтлари орасида унинг қуролли кучлари тизимини, ҳарбий хизматчилар тоифасини алоҳида эътироф этиш зарур. Таъкидлаш лозимки, асосий фаолияти қуролли вазифаларни бевосита бажаришни назарда тутмаса-да, ҳар қандай шароитда ва исталган вақтда, яъни зарурият туғилганида, ижтимоий аҳамиятли мақсад ва мотивлар билан шартланган тарзда уларни бажаришга доимий тайёр туришлари тақозо этиладиган одамлар жамоаси мавжуд.
SMOM - $\overline{MS}$ Matching for $B_K$ at Two-loop Order
Creators: name: Jäger, Sebastian
name: Kvedaraitė, Sandra
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The Kaon bag parameter, $B_K$, is a key non-perturbative ingredient in the search for new physics through CP-violation. It parameterizes the QCD hadronic matrix element of the effective weak $ΔS=2$ four-quark operator which can only be computed non-perturbatively on the lattice. The perturbative matching of $B_K$ between the lattice renormalization schemes and $\overline{\mbox{MS}}$ scheme has been done before at one-loop order. In this proceedings we describe an ongoing calculation of the conversion factors for $B_K$ between the four non-exceptional RI-SMOM schemes and the $\overline{\mbox{MS}}$ scheme at two-loop order in perturbation theory.
description: 5 pages, 3 figures, proceedings of the 36th Annual International Symposium on Lattice Field Theory - LATTICE2018
Length and time scale divergences at the magnetization-reversal transition in the Ising model
Creators: name: Stinchcombe, R. B.
name: Misra, A.
name: Chakrabarti, B K
Publisher: name: arXiv
Year: 1999
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The divergences of both the length and time scales, at the magnetization- reversal transition in Ising model under a pulsed field, have been studied in the linearized limit of the mean field theory. Both length and time scales are shown to diverge at the transition point and it has been checked that the nature of the time scale divergence agrees well with the result obtained from the numerical solution of the mean field equation of motion. Similar growths in length and time scales are also observed, as one approaches the transition point, using Monte Carlo simulations. However, these are not of the same nature as the mean field case. Nucleation theory provides a qualitative argument which explains the nature of the time scale growth. To study the nature of growth of the characteristic length scale, we have looked at the cluster size distribution of the reversed spin domains and defined a pseudo-correlation length which has been observed to grow at the phase boundary of the transition.
description: 9 pages Latex, 3 postscript figures
Non-linear fluid dynamics of eccentric discs
Creators: name: Ogilvie, G. I.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A new theory of eccentric accretion discs is presented. Starting from the basic fluid-dynamical equations in three dimensions, I derive the fundamental set of one-dimensional equations that describe how the mass, angular momentum and eccentricity vector of a thin disc evolve as a result of internal stresses and external forcing. The analysis is asymptotically exact in the limit of a thin disc, and allows for slowly varying eccentricities of arbitrary magnitude. The theory is worked out in detail for a Maxwellian viscoelastic model of the turbulent stress in an accretion disc. This generalizes the conventional alpha viscosity model to account for the non-zero relaxation time of the turbulence, and is physically motivated by a consideration of the nature of magnetohydrodynamic turbulence. It is confirmed that circular discs are typically viscously unstable to eccentric perturbations, as found by Lyubarskij, Postnov & Prokhorov, if the conventional alpha viscosity model is adopted. However, the instability can usually be suppressed by introducing a sufficient relaxation time and/or bulk viscosity. It is then shown that an initially uniformly eccentric disc does not retain its eccentricity as had been suggested by previous analyses. The evolutionary equations should be useful in many applications, including understanding the origin of planetary eccentricities and testing theories of quasi-periodic oscillations in X-ray binaries.
description: 18 pages, 2 figures, to be published in MNRAS
Comment on: ``Using Ni Substitution and $^{17}$O NMR to Probe the Susceptibility $χ'(q)$ in Cuprates''
Creators: name: Morr, Dirk. K.
name: Schmalian, Joerg
name: Stern, Raivo
name: Slichter, Charles P.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In a recent letter (PRL 79, 2117 (1997)), Bobroff et al. presented novel $^{17}$O NMR measurements for YBa_2(Cu_{1-x}Ni_x)_3O_{6+y} which offer a new probe of the momentum dependence of the static spin susceptibility $χ'(q)$. They analyzed the $^{17}$O line width by assuming a Gaussian form for $χ'$, and came to the conclusion that the correlation length $ξ$ is independent of temperature $T$. Furthermore, they claim that a Lorentzian form of $χ'$ yields the same result. We will demonstrate that the Lorentzian and Gaussian form of $χ'$ actually yield qualitatively different results for the $^{17}$O line width and its dependence on $ξ$. We show that their data when combined with $T_{2G}$ data from Takigawa require that $ξ$ be T-dependent. Furthermore, assuming a Gaussian form of $χ'$ leads to the unphysical result that $ξ$ increases with $T$. In contrast, the Lorentzian form of $χ'$ yields that $ξ$ decreases with increasing $T$ and is thus fully compatible with the experimental results.
description: 1 page, RevTeX, 1 eps figure embedded in the text, submitted to PRL
Additional file 1: of Identification, characterization and expression analysis of transient receptor potential channel genes in the oriental fruit fly, Bactrocera dorsalis
Creators: name: Su, Hong-ai
name: Bai, Xue
name: Zeng, Tian
name: Lu, Yong-yue
name: Qi, Yi-xiang
Publisher: name: figshare
Year: 2018
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Environmental Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy

description: Table S1. Primers used in this study. Table S2. Accession number of TRP channels used in this study. (DOCX 28 kb)
The surrogate matrix methodology: a priori error estimation
Creators: name: Drzisga, Daniel
name: Keith, Brendan
name: Wohlmuth, Barbara
Publisher: name: arXiv
Year: 2019
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We give the first mathematically rigorous analysis of an emerging approach to finite element analysis (see, e.g., Bauer et al. [Appl. Numer. Math., 2017]), which we hereby refer to as the surrogate matrix methodology. This methodology is based on the piece-wise smooth approximation of the matrices involved in a standard finite element discretization. In particular, it relies on the projection of smooth so-called stencil functions onto high-order polynomial subspaces. The performance advantage of the surrogate matrix methodology is seen in constructions where each stencil function uniquely determines the values of a significant collection of matrix entries. Such constructions are shown to be widely achievable through the use of locally-structured meshes. Therefore, this methodology can be applied to a wide variety of physically meaningful problems, including nonlinear problems and problems with curvilinear geometries. Rigorous a priori error analysis certifies the convergence of a novel surrogate method for the variable coefficient Poisson equation. The flexibility of the methodology is also demonstrated through the construction of novel methods for linear elasticity and nonlinear diffusion problems. In numerous numerical experiments, we demonstrate the efficacy of these new methods in a matrix-free environment with geometric multigrid solvers. In our experiments, up to a twenty-fold decrease in computation time is witnessed over the classical method with an otherwise identical implementation.
Government Communication Effectiveness and Satisfaction with Police Performance: A Large-Scale Survey Study
Creators: name: Ho, ATK
name: Cho, Wonhyuk
Publisher: name: Open Access Victoria University of Wellington | Te Herenga Waka
Year: 2021
Subjects: Uncategorized

description: For the last two decades, performance management theories and practices have focused on outcome-oriented management but have paid little attention to the role of public communication. Using multiple large data sets from Kansas City, Missouri, for 2009–14, this research suggests that the perceived effectiveness of public communication has a more substantial impact on public satisfaction with police protection and crime prevention than neighborhood crime rates and broken windows factors and that perceived effectiveness moderates the negative impact of crime rates. After controlling for residents’ demographic characteristics, the authors find that the perceived effectiveness of communication is associated with public satisfaction with the content and quality of the city website and the government television channel. The implications for public safety management and police–citizen relations as well as directions for future research on public communication strategies and public performance management are presented.
When an oscillating center in an open system undergoes power law decay
Creators: name: Saha, Sandip
name: Gangopadhyay, Gautam
Publisher: name: arXiv
Year: 2018
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We have probed the condition of periodic oscillation in a class of two variable nonlinear dynamical open systems modeled with Lienard-Levinson-Smith(LLS) equation which can be a limit cycle, center or a very slowly decaying center type oscillation. Using a variety of examples of open systems like Glycolytic oscillator, Lotka-Volterra(L-V) model, a generalised van der Pol oscillator and a time delayed nonlinear feedback oscillation as a non-autonomous system, each of which contains a family of periodic orbits, we have solved LLS systems in terms of a multi-scale perturbation theory using Krylov-Bogoliubov(K-B) method and it is utilised to characterise the size and shape of the limit cycle and center as well as the approach to their steady state dynamics. We have shown the condition when the average scaled radius of a center undergoes a power law decay with exponent 1/2.
description: J. Math. Chem. (Springer), 2018
The static cylinder, gyroscopes, the C metric, and all that
Creators: name: Herrera, L.
name: Ruifernandez, J.
name: Santos, N. O.
Publisher: name: arXiv
Year: 2000
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The physical meaning of the Levi-Civita spacetime for some "critical" values of the parameter sigma, is discussed in the light of gedanken experiments performed with gyroscopes circumventing the axis of symmetry. The fact that sigma=1/2 corresponds to flat space described from the point of view of an accelerated frame of reference, led us to incorporate the C metric into discussion. The interpretation of phi as an angle variable for any value of sigma, appears to be at the origen of difficulties.
description: 17 pages Latex, five figures. To appear in Gen.Rel.Grav
Weighted geometric inequalities for hypersurfaces in sub-static manifolds
Creators: name: Girão, Frederico
name: Rodrigues, Diego
Publisher: name: arXiv
Year: 2019
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: We prove two weighted geometric inequalities that hold for strictly mean convex and star-shaped hypersurfaces in Euclidean space. The first one involves the weighted area and the area of the hypersurface and also the volume of the region enclosed by the hypersurface. The second one involves the total weighted mean curvature and the area of the hypersurface. Versions of the first inequality for the sphere and for the adS-Reissner-Nordström manifold are proven. We end with an example of a convex surface for which the ratio between the polar moment of inertia and the square of the area is less than that of the round sphere.
title: Διερεύνηση της δυνατότητας προσδιορισμού της κατάστασης του εγχυτήρα κινητήρων ντήζελ μέσω της ανάλυσης του ρυθμού έκλυσης θερμότητας
titleType: AlternativeTitle
title: Possibilities to estimate diesel injector condition from the analysis of the heat release rate
Creators: name: Korres, Michail G.
Publisher: name: National Technological University of Athens
Year: 2013
Subjects: Ντήζελ κινητήρας
Ρυθμός έκλυσης θερμότητας
Εγχυτήρες
Σύστημα έγχυσης
Λειτουργικοί παράμετροι
Προσομοίωση
Διάγραμμα ρυθμού έκλυσης θερμότητας
Διάγραμμα αδιαστατοποιημένης έκλυσης θερμότητας
Diesel engine
Heat release rate
Injectors
Injection system
Parameters of function
Simulation
HRR
CHR

description: 110 σ.
description: Στο πρώτο κομμάτι της εργασίας παρουσιάζεται το θεωρητικό υπόβαθρο της λειτουργίας ντήζελ εμβολοφόρων κινητήρων και του συστήματος έγχυσης του καυσίμου.Στο πειραματικό μέρος με βάση μετρήσεις που ελήφθησαν από ένα ναυτικό κινητήρα και ηλεκτροπαραγωγά ζεύγη σε νησία προέκυψαν δεδομένα για τις λειτουργικές παραμέτρους έκαστης μηχανής και για το ρυθμό έκλυσης θερμότητας.Από την ανάλυση του ρυθμού έκλυσης θερμότητας σε συνδυασμό με τη μελέτη των λειτουργικών παραμέτρων έγινε προσπάθεια προσδιορισμού της κατάστασης των εγχυτήρων.
description: The first part of the thesis comprises the theoretical background of the diesel engine's function and the description of its respective injection system.From the accumulated measurements from a marine engine and electricity generators on islands data was acquired regarding the fundamental parameters of each engine's function as well as the heat release rate.From the analysis of the heat release rate we tried to estimate the condition of the diesel injectors.
Spin diffusion and relaxation in three-dimensional isotropic Heisenberg antiferromagnets
Creators: name: Kikoin, K. A.
name: Kiselev, M. N.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A theory is proposed for kinetic effects in isotropic Heisenberg antiferromagnets at temperatures above the Neel point. A metod based on the analysis of a set of Feynman diagrams for the kinetic coefficients is developed for studying the critical dynamics. The scaling behavior of the generalized coefficient of spin diffusion and relaxation constant in the paramagnetic phase is studied in terms of the approximation of coupling modes. It is shown that the kinetic coefficients in an antiferromagnetic system are singular in the fluctuation region. The corresponding critical indices for diffusion and relaxation processes are calculated. The scaling dimensionality of the kinetic coefficients agrees with the predictions of dynamic scaling theory and a renormalization group analysis. The proposed theory can be used to study the momentum and frequency dependence of the kinetic parameters, and to determine the form of the scaling functions. The role of nonlocal correlations and spin-liquid effects in magnetic systems is briefly discussed.
description: 10 pages, RevTeX, 3 EPS figures included
Tetris: Re-architecting Convolutional Neural Network Computation for Machine Learning Accelerators
Creators: name: Lu, Hang
name: Wei, Xin
name: Lin, Ning
name: Yan, Guihai
name: Li, and Xiaowei
Publisher: name: arXiv
Year: 2018
Subjects: subject: Machine Learning (cs.LG)
subject: Hardware Architecture (cs.AR)
subject: FOS: Computer and information sciences

description: Inference efficiency is the predominant consideration in designing deep learning accelerators. Previous work mainly focuses on skipping zero values to deal with remarkable ineffectual computation, while zero bits in non-zero values, as another major source of ineffectual computation, is often ignored. The reason lies on the difficulty of extracting essential bits during operating multiply-and-accumulate (MAC) in the processing element. Based on the fact that zero bits occupy as high as 68.9% fraction in the overall weights of modern deep convolutional neural network models, this paper firstly proposes a weight kneading technique that could eliminate ineffectual computation caused by either zero value weights or zero bits in non-zero weights, simultaneously. Besides, a split-and-accumulate (SAC) computing pattern in replacement of conventional MAC, as well as the corresponding hardware accelerator design called Tetris are proposed to support weight kneading at the hardware level. Experimental results prove that Tetris could speed up inference up to 1.50x, and improve power efficiency up to 5.33x compared with the state-of-the-art baselines.