cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Detection and Classification of Power Quality Disturbances in Distribution Networks Based on VMD and DFA
Creators: name: Lu, Mi
Publisher: name: figshare
Year: 2021
Subjects: subject: 80501 Distributed and Grid Systems
subject: FOS: Computer and information sciences

description: In this paper, a novel algorithm is proposed to detect and classify the power quality (PQ) disturbances for distribution networks with distributed generation. First, a distribution system with photovoltaic and wind power generation is built as a test platform. Then, nine types of power quality disturbances in the distribution network are decomposed by variational mode decomposition (VMD) and the noise is filtered. Meanwhile, the mode functions containing characteristic information are extracted as input signals of detrended fluctuation analysis (DFA). Power quality disturbances are classified from the view of their distributed energy operational status, and three types of windows are set up to deal with different frequency disturbances. The two-dimensional and three-dimensional scatter plots of each type under three windows are depicted, and the criteria are determined to distinguish the disturbances under the different operating conditions. The simulations show that the algorithm is simpler, more accurate and feasible. It provides an approach for online real-time detection of embedded systems
Single Top Quark Production at the Fermilab Tevatron Collider
Creators: name: Mitrevski, Jovan
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: First evidence for single top quark production has recently been found by both the D0 and CDF experiments. By combining three analyses, D0 measured a cross section of 4.7 +- 1.3 pb, with a significance of 3.6 standard deviations, and CDF's matrix elements analysis measured a cross section of 3.0 +1.2 -1.1 pb, with a significance of 3.1 standard deviations. These analyses also provided the first direct measurements of the CKM matrix element, |Vtb|, without assuming unitarity. This talk briefly describes the latest single top production results from the two experiments.
description: Talk given at International Conference on Hadron Structure (HS 07), Modra-Harmonia, Slovakia, 3-7 Sep 2007
Nontraditional hypsometric equation
Creators: name: Ong, Hing
name: Roundy, Paul E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: This study corrects the hypsometric equation by restoring the nontraditional terms to relax the hydrostatic approximation. The nontraditional terms include one Coriolis term and two metric terms in the vertical momentum equation. The hypsometric equations with and without the nontraditional correction are used to calculate the geopotential height of pressure levels using more than 300,000 selected tropical rawinsonde profiles. With westerlies between two pressure levels, the thickness of the layer increases, which reduces the upward pressure gradient forces to balance the upward nontraditional Coriolis forces; the opposite is true for easterlies. Hence, zonal winds are negatively correlated with traditional geopotential height biases aloft. At 500 hPa, for example, traditional geopotential height error in the tropical troposphere is on the order of at least 0.5 m, which is considerable with respect to geopotential height variability in tropical large-scale flow, on the order of 10 m to 15 m.
description: 10 pages, 3 figures, This is the accepted version of an article that has been published in final form
Poincare invariance in effective string theories
Creators: name: Meyer, Harvey B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We investigate the dispersion relation of the winding closed-string states in SU(N) gauge theory defined on a d-dimensional hypertorus, in a class of effective string theories. We show that order by order in the asymptotic expansion, each energy eigenstate satisfies a relativistic dispersion relation. This is illustrated in the Luscher-Weisz effective string theory to two-loop order, where the Polyakov loop matrix elements between the vacuum and the closed string states are obtained explicitly. We attempt a generalization of these considerations to the case of compact dimensions transverse to the string.
description: 14 pages, 1 figure; two paragraphs and a few references added
The developmental rate of nymphal Lycorma delicatula, an assessment of their developmental response to temperature and host plant
Creators: name: Kreitman, Devin
Publisher: name: No Publisher Supplied
Year: 2023

description: The spotted lanternfly Lycorma delicatula (White) (Hemiptera: Fulgoridae) is an invasive planthopper species that was introduced into North America and is a threat to multiple plant industries. Being a recent introduction, not much was previously known regarding its phenology. For this thesis, the phenology of L. delicatula was examined through delving into its developmental response to temperature as well as the effect that host plant has on its development. Specimens, sourced from eggs hatched in the laboratory and field captured nymphs, were used in these experiments. To analyze its developmental response to temperature, nymphs were reared on Ailanthus altissima (Miller) (Sapindales: Simaroubaceae) at each of the following constant temperatures: 5, 10, 15, 20, 25, 30, 35, and 40°C. Developmental rate increased with temperature from 15 to 30°C for all instars, then declined again at higher temperatures. This study provided the first lower developmental threshold values for L. delicatula nymphs. Following this, the effect of host plant on the development of L. delicatula nymphs was assessed. Nymphs were reared at a constant 25°C on the following hosts: A. altissima, Vitis labrusca (L.) (Vitales: Vitaceae), Salix babylonica (L.) (Malpighiales: Salicaceae), Acer rubrum (L.) (Sapindales: Sapindaceae), Celastrus orbiculata (Thunberg) (Celastrales: Celastraceae), Ocimum basilicum (L.) (Lamiales: Lamiaceae), and Rosa multiflora (Thunberg) (Rosales: Rosaceae). Host plant was found to have a significant effect on development time for nymphs in the first through third instar as well as on nymphal survival. This variability in development time by host plant can potentially impact phenology models, which should be updated to reflect these new insights. Both studies provide vital information for the development of phenology models for L. delicatula and can be used to refine existing models and make way for future studies, such as using field data to validate the development rate, looking into the impact on developmental rate of rearing on additional and multiple hosts, and calculating the developmental rate by rearing individual nymphs all the way to adults at various constant temperatures.
On exponentially coprime integers
Creators: name: Tóth, László
Publisher: name: arXiv
Year: 2006
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11A05, 11A25, 11N37

description: The integers $n=\prod_{i=1}^r p_i^{a_i}$ and $m=\prod_{i=1}^r p_i^{b_i}$ having the same prime factors are called exponentially coprime if $(a_i,b_i)=1$ for every $1\le i\le r$. We estimate the number of pairs of exponentially coprime integers $n,m\le x$ having the prime factors $p_1,...,p_r$ and show that the asymptotic density of pairs of exponentially coprime integers having $r$ fixed prime divisors is $(ζ(2))^{-r}$.
title: The Impact of State Road Fund Debt Limits
title: An Empirical Analysis
titleType: Subtitle
Creators: name: Moody, Michael
name: Hackbart, Merl
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 2005
Subjects: subject: Transportation Engineering

description: States have been gradually increasing their reliance on debt financing to meet their transportation funding needs. Increased reliance on debt financing has been driven by the slow growth of highway and Road Fund revenue sources, resistance to tax expenditures, and restrictions placed on the use of General Fund revenue, in many states, for transportation projects. In light of states’ increasing reliance on debt financing for transportation, state officials and policy makers have shown greater interest debt management practices. One dominant practice across the states is the use of debt limitations. Debt limit policies vary widely from state to state. There are differences in the origin, scope, and coverage of state debt policies. The present study is an extension of the research originally done by the University of Kentucky Transportation Center exploring the debt limits and debt capacity using the Road Fund. The original study yielded an unexpected result related to the level of debt service to total revenue. States with debt limitation polices had, on average, higher ratios of debt service to total revenue than states without debt limitation policies. This study presents two statistical tests that confirm the previous graphical result from the original study. Using a simple t-test, the group of states with a Road Fund debt limit had a ratio of debt service to revenue that was, on average, 7.4% higher than the group of states without a Road Fund debt limit. Using multivariate regression analysis, states with a Road Fund debt limit had ratios of Road Fund debt service to Road Fund revenue that were 9.6% higher than states without Road Fund debt limits.
Blepharisma steini Kahl 1932
Creators: name: Durán-Ramírez, Carlos Alberto
name: Dias, Roberto Júnio Pedroso
name: Estrada, Rosaura Mayén-
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Chromista
Ciliophora
Heterotrichea
Heterotrichida
Spirostomidae
Blepharisma
Blepharisma steini

description: Blepharisma steini Kahl, 1932
Distribution. MEXICO: Coffee plantation La Onza, near Coatepec (Durán-Ramírez et al. 2015), (Th); Coffee plantation Virginia Armand, near Coatepec (Durán-Ramírez et al. 2015), (Th).
description: Published as part of Durán-Ramírez, Carlos Alberto, Dias, Roberto Júnio Pedroso & Estrada, Rosaura Mayén-, 2020, Checklist of ciliates (Alveolata: Ciliophora) that inhabit in bromeliads from the Neotropical Region, pp. 1-36 in Zootaxa 4895 (1) on page 8, DOI: 10.11646/zootaxa.4895.1.1, http://zenodo.org/record/4321437
No periodicity revealed for an "eclipsing" ultraluminous supersoft X-ray source in M81
Creators: name: Liu, Jifeng
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Luminous supersoft X-ray sources found in the Milky Way and Magellanic Clouds are likely white dwarfs that steadily or cyclically burn accreted matter on their surface, which are promising type Ia supernova progenitors. Observations of distant galaxies with Chandra and XMM-Newton have revealed supersoft sources that are generally hotter and more luminous, including some ultraluminous supersoft sources (ULSs) that are possibly intermediate mass black holes of a few thousand solar masses. In this paper we report our X-ray spectral and timing analysis for M81-ULS1, an ultraluminous supersoft source in the nearby spiral galaxy M81. M81-ULS1 has been persistently supersoft in 17 Chandra ACIS observations spanning six years, and its spectrum can be described by either a $kT_{bb}\approx70$ eV blackbody for a $\sim1.2M_\odot$ white dwarf, or a $kT_{in} \approx 80$ eV multicolor accretion disk for a $\gtrsim10^3M_\odot$ intermediate mass black hole. In two observations, the light curves exhibited dramatic flux drop/rise on time scales of $10^3$ seconds, reminiscent of eclipse ingress/egress in eclipsing X-ray binaries. However, the exhaustive search for periodicity in the reasonable range of 50 ksec to 50 days failed to reveal an orbital period. The failure to reveal any periodicity is consistent with the long period ($\ge30$ yrs) predicted for this system given the optical identification of the secondary with an asymptotic giant star. Also, the eclipse-like dramatic flux changes in hours are hard to explain under the white dwarf model, but can in principle be explained by disk temperature changes induced by accretion rate variations under the intermediate mass black hole model.
description: 19 pages, 7 figures, 1 table, to appear in ApJS
Freeform imaging systems: Fermat's principle unlocks 'first time right' design
Creators: name: Duerr, Fabian
name: Thienpont, Hugo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: For more than 150 years, scientists have advanced aberration theory to describe, analyse, and eliminate imperfections that disturb the imaging quality of optical components and systems. Simultaneously, they have developed optical design methods for and manufacturing techniques of imaging systems with ever-increasing complexity and performance up to the point where they are now including optical elements that are unrestricted in their surface shape. These so-called optical freeform elements offer degrees of freedom that can greatly extend the functionalities and further boost the specifications of state-of-the-art imaging systems. However, the drastically increased number of surface coefficients of these freeform surfaces poses severe challenges for the optical design process, such that the deployment of freeform optics remained limited until today. In this paper, we present a deterministic direct optical design method for freeform imaging systems based on differential equations derived from Fermat's principle and solved using power series. The method allows calculating the optical surface coefficients that ensure minimal image blurring for each individual order of aberrations. We demonstrate the systematic, deterministic, scalable and holistic character of our method with catoptric and catadioptric design examples. As such we introduce a disruptive methodology to design optical imaging systems 'first time right', we eliminate the 'trial and error' approach in present-day optical design, and we pave the way to a fast-track uptake of freeform elements to create the next-generation high-end optics.
description: 15 pages, 5 figures, submitted to journal
Lexical elicitation: Occupations
Creators: name: Palacio, Frank
name: Björklund, Anna
name: Elias, Alexander
name: López Márquez, Wendy
name: Michael, Lev
name: Montaño Ramírez, Tzintia
name: Robertson, Allegra
name: Wellstood, Zachary
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: cab

description: Focuses on derived forms of some occupations.
Attention augmentation with multi-residual in bidirectional LSTM
Creators: name: Lu, Mi
Publisher: name: figshare
Year: 2021
Subjects: subject: Artificial Intelligence and Image Processing
subject: FOS: Computer and information sciences

description: Recurrent neural networks (RNNs) have been proven to be efficient in processing sequential data. However, the traditional RNNs have suffered from the gradient diminishing problem until the advent of Long Short-Term Memory (LSTM). However, LSTM is weak in capturing long-time dependency in sequential data due to the inadequacy of memory capacity in LSTM cells. To address this challenge, we propose an Attention-augmentation Bidirectional Multi-residual Recurrent Neural Network (ABMRNN) to overcome the deficiency. We propose an algorithm which integrates both past and future information at every time step with omniscient attention model. The multi-residual mechanism has also been leveraged in the proposed model targeting the pattern of the relationship between current time step and further distant time steps instead of only one previous time step. The results of experiments show that our model outperforms the traditional statistical classifiers and other existing RNN architectures.
On the structure of solutions of ergodic type Bellman equation related to risk-sensitive control
Creators: name: Kaise, Hidehiro
name: Sheu, Shuenn-Jyi
Publisher: name: arXiv
Year: 2006
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60G35 (Primary) 60H30, 93E20 (Secondary)

description: Bellman equations of ergodic type related to risk-sensitive control are considered. We treat the case that the nonlinear term is positive quadratic form on first-order partial derivatives of solution, which includes linear exponential quadratic Gaussian control problem. In this paper we prove that the equation in general has multiple solutions. We shall specify the set of all the classical solutions and classify the solutions by a global behavior of the diffusion process associated with the given solution. The solution associated with ergodic diffusion process plays particular role. We shall also prove the uniqueness of such solution. Furthermore, the solution which gives us ergodicity is stable under perturbation of coefficients. Finally, we have a representation result for the solution corresponding to the ergodic diffusion.
description: Published at http://dx.doi.org/10.1214/009117905000000431 in the Annals of Probability (http://www.imstat.org/aop/) by the Institute of Mathematical Statistics (http://www.imstat.org)
On the collisional disalignment of dust grains in illuminated and shaded regions of IC 63
Creators: name: Soam, Archana
name: Andersson, B-G
name: Acosta-Pulido, Jose
name: López, Manuel Fernández
name: Vaillancourt, John E.
name: Weaver, Susanna L. Widicus
name: Piirola, Vilppu
name: Gordon, Michael S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Interstellar dust grain alignment causes polarization from UV to mm wavelengths, allowing the study of the geometry and strength of the magnetic field. Over last couple of decades observations and theory have led to the establishment of the Radiative Alignment Torque (RAT) mechanism as leading candidate to explain the effect. With a quantitatively well constrained theory, polarization can be used not only to study the interstellar magnetic field, but also the dust and other environmental parameters. Photo-dissociation Regions (PDRs), with their intense, anisotropic radiation fields, consequent rapid $\rm H_{2}$ formation, and high spatial density-contrast provide a rich environment for such studies. Here we discuss an expanded optical, NIR, and mm-wave study of the IC\,63 nebula, showing strong $\rm H_{2}$ formation-enhanced alignment and the first direct empirical evidence for disalignment due to gas-grain collisions using high-resolution $\rm HCO^{+}$(J=1-0) observations. We find that relative amount of polarization is marginally anti-correlated with column density of $\rm HCO^{+}$. However, separating the lines of sight of optical polarimetry into those behind, or in front of, a dense clump as seen from $γ$ Cas, the distribution separates into two well defined sets, with data corresponding to \enquote{shaded} gas having a shallower slope. This is expected if the decrease in polarization is caused by collisions since collisional disalignment rate is proportional to R$_C\propto n\sqrt{T}$. Ratios of the best-fit slopes for the \enquote{illuminated} and \enquote{shaded} samples of lines of sight agrees, within the uncertainties, with the square-root of the two-temperature H$_2$ excitation in the nebula seen by Thi et al. (2009).
description: 14 pages, 6 figures, Accepted for publication in ApJ
Adaptive significance of vertical migration behaviour of Skistodiaptomus oregonensis
Creators: name: Ghan, David
Publisher: name: University of British Columbia
Year: 2009

description: I have studied the adaptive significance of vertical migration of zooplankton in 2 populations of the copepod Skistodiaptomus oregonensis that migrate and 2 populations that do not migrate. Vertical migration of the copepods is associated with the presence of pelagic sticklebacks. This observation is consistent with the hypothesis that the adaptive benefit of vertical migration by S. oregonensis is to avoid stickleback predators. The alternative hypotheses including avoidance of juvenile sockeye predators, foraging efficiency, bioenergetic efficiency, or combined foraging/bioenergetic efficiency are not supported by the comparisons of migratory behaviour of S. oregonensis in the 4 lakes. Both the depth and timing of S. oregonensis migration are consistent with the hypothesis that copepods are avoiding predation by sticklebacks. Light intensities at the depth at which S. oregonensis reside during the day are sufficiently low to reduce predation risk from visual foraging stickleback and the timing of ascent at dusk and descent at dawn are such that S. oregonensis remain at light intensities that reduce risk from stickleback. S. oregonensis are at the surface at dusk and dawn at the time that juvenile sockeye feed in the surface habitat. Vertical migration appears to be a trade-off with resource acquisition. Phytoplankton are less concentrated in the deep habitat where S. oregonensis reside during the day. Furthermore, migrating copepods contain less phytoplankton as food in their guts than do non-migrating individuals. In vertical columns in the laboratory, the presence or absence of sticklebacks does not influence the vertical distributions of S. oregonensis collected from lakes with either migratory or non-migratory populations. This indicates that the migration phenotype is fixed rather than being a flexible behaviour induced by environmental cues. I developed a dynamic optimization model to predict the optimal depth decisions for S. oregonensis based on depth dependent lake food and temperature conditions, fish abundance and predation rates, and S. oregonensis bioenergetics. The model predicts that vertical migration should occur to avoid sticklebacks under a broad range of modelled conditions, but with a fitness cost due to feeding opportunity costs. This demonstrates quantitatively that it is tenable to hypothesize that vertical migration involves a tradeoff between stickleback avoidance and feeding opportunity. Taken together, these results are consistent with the view that different migration behaviours in these populations are a result of divergent evolution driven by environmental variation affecting the optimal solution to the predation risk/resource acquisition trade-off.
Tracking areas with increased likelihood of surface particle aggregation in the Gulf of Finland: A first look at persistent Lagrangian Coherent Structures (LCS)
Creators: name: Giudici, Andrea
name: Suara, Kabir
name: Soomere, Tarmo
name: Brown, Richard
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: We explore the possibility to identify areas of intense patch formation from floating items due to systematic convergence of surface velocity fields by means of a visual comparison of Lagrangian Coherent Structures (LCS) and estimates of areas prone to patch formation using the concept of Finite-Time Compressibility (FTC, a generalisation of the notion of time series of divergence). The LCSs are evaluated using the Finite Time Lyapunov Exponent (FTLE) method. The test area is the Gulf of Finland (GoF) in the Baltic Sea. A basin-wide spatial average of backward FTLE is calculated for the GoF for the first time. This measure of the mixing strength displays a clear seasonal pattern. The evaluated backward FTLE features are linked with potential patch formation regions with high FTC levels. It is shown that areas hosting frequent upwelling or downwelling have consistently stronger than average mixing intensity. The combination of both methods, FTC and LCS, has the potential of being a powerful tool to identify the formation of patches of pollution at the sea surface.
description: 25 Pages, 5 Figure, Accepted to be published in the Journal of Marine Systems
From Star Trek to the Hunger Games: Emblem gestures in science fiction and their uptake in popular culture
Creators: name: Freestone, Peta
name: Birnie-Smith, Jessica
name: Gawne, Lauren
Publisher: name: La Trobe
Year: 2024
Subjects: classificationCode: 4603
subject: Computer vision and multimedia computation
classificationCode: 4704
subject: Linguistics
subject: FOS: Languages and literature

description: Research on emblems to date has not drawn on corpus methods that use public data. In this paper, we use corpus methods to explore the use of original fictional gestures in the real world. We look at two examples from popular science fiction, the Vulcan salute from Star Trek and the three-finger salute from The Hunger Games. First, a Twitter corpus of the Vulcan salute emoji shows that it is used to represent Star Trek fandom and wider nerd culture, alongside its use as a greeting. Second, a global news corpus shows the three-finger salute has come to be used as a pro-democracy protest gesture across political and cultural boundaries in South East Asia. These corpus studies show different trajectories for the two gestures, with the three-finger salute escaping the confines of its fictional world, while the Vulcan salute has come to stand in as a reference to the media it originated from. We conclude with a reflection on the opportunities, challenges, and limitations of bringing corpus methods to gesture studies.
Freely decaying turbulence and Bose-Einstein condensation in Gross-Pitaevski model
Creators: name: Nazarenko, Sergey
name: Onorato, Miguel
Publisher: name: arXiv
Year: 2006
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We study turbulence and Bose-Einstein condensation (BEC) within the two-dimensional Gross-Pitaevski (GP) model. In the present work, we compute decaying GP turbulence in order to establish whether BEC can occur without forcing and if there is an intensity threshold for this process. We use the wavenumber-frequency plots which allow us to clearly separate the condensate and the wave components and,therefore, to conclude if BEC is present. We observe that BEC in such a system happens even for very weakly nonlinear initial conditions without any visible threshold. BEC arises via a growing phase coherence due to anihilation of phase defects/vortices. We study this process by tracking of propagating vortex pairs. The pairs loose momentum by scattering the background sound, which results in gradual decrease of the distance between the vortices. Occasionally, vortex pairs collide with a third vortex thereby emitting sound, which can lead to more sudden shrinking of the pairs. After the vortex anihilation the pulse propagates further as a dark soliton, and it eventually bursts creating a shock.
description: 19 pages, 13 figures, accepted in JLTP
title: Учебное веб-портфолио в российской высшей школе
Creators: name: ELS IPR BOOKS
Publisher: name: Южный институт менеджмента, Ай Пи Эр Медиа
Year: 2018

description: В пособии рассмотрены возможности выполнения посредством веб-портфолио общесистемных требований ФГОС ВО нового поколения, предъявляемым к условиям реализации образовательных программ в части организации электронной информационно-образовательной среды вуза; приведена таксономия понятия «электронное портфолио»; показана роль веб-портфолио в самопрезентации обучающегося, в поддержке процессов самопознания и саморазвития; раскрыты возможности веб-портфолио как виртуального рабочего кабинета преподавателя и обучающегося. Пособие предназначено для аспирантов, проходящих в рамках обучения по всем направлениям подготовки кадров высшей квалификации педагогическую практику и изучающих учебную дисциплину «Педагогика и психология экономического образования», и преподавателей вузов, повышающих квалификацию самостоятельно или на соответствующих курсах.
Galaxy And Mass Assembly: A Comparison between Galaxy-Galaxy Lens Searches in KiDS/GAMA
Creators: name: Knabel, Shawn
name: Steele, Rebecca L.
name: Holwerda, Benne W.
name: Bridge, Joanna S.
name: Jacques, Alice
name: Hopkins, Andrew
name: Bamford, Steven P.
name: Brown, Michael J. I.
name: Brough, Sarah
name: Kelvin, Lee S.
name: Bilicki, Maciej
name: Kielkopf, John
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Strong gravitational lenses are a rare and instructive type of astronomical object. Identification has long relied on serendipity, but different strategies -- such as mixed spectroscopy of multiple galaxies along the line of sight, machine learning algorithms, and citizen science -- have been employed to identify these objects as new imaging surveys become available. We report on the comparison between spectroscopic, machine learning, and citizen science identification of galaxy-galaxy lens candidates from independently constructed lens catalogs in the common survey area of the equatorial fields of the GAMA survey. In these, we have the opportunity to compare high-completeness spectroscopic identifications against high-fidelity imaging from the Kilo Degree Survey (KiDS) used for both machine learning and citizen science lens searches. We find that the three methods -- spectroscopy, machine learning, and citizen science -- identify 47, 47, and 13 candidates respectively in the 180 square degrees surveyed. These identifications barely overlap, with only two identified by both citizen science and machine learning. We have traced this discrepancy to inherent differences in the selection functions of each of the three methods, either within their parent samples (i.e. citizen science focuses on low-redshift) or inherent to the method (i.e. machine learning is limited by its training sample and prefers well-separated features, while spectroscopy requires sufficient flux from lensed features to lie within the fiber). These differences manifest as separate samples in estimated Einstein radius, lens stellar mass, and lens redshift. The combined sample implies a lens candidate sky-density $\sim0.59$ deg$^{-2}$ and can inform the construction of a training set spanning a wider mass-redshift space.
description: 22 figures, 6 tables, accepted for publication in The Astronomical Journal
Complete moduli spaces of branchvarieties
Creators: name: Alexeev, Valery
name: Knutson, Allen
Publisher: name: arXiv
Year: 2006
Subjects: subject: Algebraic Geometry (math.AG)
subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: 14C05; 14D22; 14A10

description: The space of subvarieties of P^n with a fixed Hilbert polynomial is not complete. Grothendieck defined a completion by relaxing "variety" to "scheme", giving the complete_Hilbert scheme_ of subschemes of P^n with fixed Hilbert polynomial. We instead relax "sub" to "branch", where a_branchvariety of_ P^n is defined to be a_reduced_ (though possibly reducible) scheme_with a finite morphism to_ P^n. Our main theorems are that the moduli stack of branchvarieties of P^n with fixed Hilbert polynomial and total degrees of i-dimensional components is a proper (complete and separated) Artin stack with finite stabilizer, and has a coarse moduli space which is a proper algebraic space. Families of branchvarieties have many more locally constant invariants than families of subschemes; for example, the number of connected components is a new invariant. In characteristic 0, one can extend this count to associate a Z-labeled rooted forest to any branchvariety.
description: minor tweaks, addition of Chirivi-Littelmann example, and references to subsequent work of Lieblich and Starr
Determining the Dark Matter Relic Density in the Minimal Supergravity Stau-Neutralino Coannihilation Region at the Large Hadron Collider
Creators: name: Arnowitt, Richard
name: Dutta, Bhaskar
name: Gurrola, Alfredo
name: Kamon, Teruki
name: Krislock, Abram
name: Toback, David
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We examine the stau-neutralino coannihilation (CA) mechanism of the early universe. We use the minimal supergravity (mSUGRA) model and show that from measurements at the Large Hadron Collider one can predict the dark matter relic density with an uncertainty of 6% with 30 fb-1 of data, which is comparable to the direct measurement by Wilkinson Microwave Anisotropy Probe. This is done by measuring four mSUGRA parameters m0, m1/2, A0 and tan(beta) without requiring direct measurements of the top squark and bottom squark masses. We also provide precision measurements of the gaugino, squark, and lighter stau masses in this CA region without assuming gaugino universality.
description: LaTex file, 4 pages, 5 eps fugures. Final version. Appear in PRL
Depletion effects and loop formation in self-avoiding polymers
Creators: name: Toan, N. M.
name: Marenduzzo, D.
name: Cook, P. R.
name: Micheletti, C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Langevin dynamics is employed to study the looping kinetics of self-avoiding polymers both in ideal and crowded solutions. A rich kinetics results from the competition of two crowding-induced effects: the depletion attraction and the enhanced viscous friction. For short chains, the enhanced friction slows down looping, while, for longer chains, the depletion attraction renders it more frequent and persistent. We discuss the possible relevance of the findings for chromatin looping in living cells.
description: 4 pages, 3 figures
Optimizing Radiotherapy Plans for Cancer Treatment with Tensor Networks
Creators: name: Cavinato, Samuele
name: Felser, Timo
name: Fusella, Marco
name: Paiusco, Marta
name: Montangero, Simone
Publisher: name: arXiv
Year: 2020
Subjects: subject: Medical Physics (physics.med-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Computational Physics (physics.comp-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a novel application of Tensor Network methods in cancer treatment as a potential tool to solve the dose optimization problem in radiotherapy. In particular, the Intensity-Modulated Radiation Therapy (IMRT) technique - that allows treating irregular and inhomogeneous tumors while reducing the radiation toxicity on healthy organs - is based on the optimization of the radiation beamlets intensities. The optimization aims to maximize the delivery of the therapy dose to cancer while avoiding the organs at risk to prevent their damage by the radiation. Here, we map the dose optimization problem into the search of the ground state of an Ising-like Hamiltonian, describing a system of long-range interacting qubits. Finally, we apply a Tree Tensor Network algorithm to find the ground-state of the Hamiltonian. In particular, we present an anatomical scenario exemplifying a prostate cancer treatment. A similar approach can be applied to future hybrid classical-quantum algorithms, paving the way for the use of quantum technologies in future medical treatments.
description: 12 pages, 8 figures
title: LexTran Support Project
title: Strategic Planning Support for LexTran Visioning
titleType: Subtitle
Creators: name: O'Connell, Lenahan
name: Grossardt, Ted
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 2005
Subjects: subject: Transportation Engineering

description: In October 2003, LexTran, the City of Lexington’s public transportation provider, was undergoing a management transition. It sought the assistance of the Kentucky Transportation Center for strategic planning and visioning. This project produced four deliverables: (1) a series of public meetings facilitated by the Kentucky Transportation Center on rider and other stakeholder attitudes toward LexTran and its general performance; (2) an environmental scan comparing LexTran to similar transit providers on operating efficiency, ridership, funding sources, and other characteristics; (3) A GIS database containing census data and other information useable for the analysis of proposed routes; and (4) a PowerPoint presentation of LexTran’s financial situation in 2004 that was used to inform the public prior to the 2004 referendum for a proposed dedicated tax to support LexTran operations. Lexington voters passed the referendum and LexTran is now financially solvent. The environmental scan, the GIS database, and the PowerPoint presentation are in Appendices A, B, and C, respectively.
MPEC 2024-T194 : 2024 TW5
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 TW5

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
BB: Booting Booster for Consumer Electronics with Modern OS
Creators: name: Lim, Geunsik
name: Ham, MyungJoo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Operating Systems (cs.OS)
subject: FOS: Computer and information sciences

description: Unconventional computing platforms have spread widely and rapidly following smart phones and tablets: consumer electronics such as smart TVs and digital cameras. For such devices, fast booting is a critical requirement; waiting tens of seconds for a TV or a camera to boot up is not acceptable, unlike a PC or smart phone. Moreover, the software platforms of these devices have become as rich as conventional computing devices to provide comparable services. As a result, the booting procedure to start every required OS service, hardware component, and application, the quantity of which is ever increasing, may take unbearable time for most consumers. To accelerate booting, this paper introduces \textit{Booting Booster} (BB), which is used in all 2015 Samsung Smart TV models, and which runs the Linux-based Tizen OS. BB addresses the init scheme of Linux, which launches initial user-space OS services and applications and manages the life cycles of all user processes, by identifying and isolating booting-critical tasks, deferring non-critical tasks, and enabling execution of more tasks in parallel. BB has been successfully deployed in Samsung Smart TV 2015 models achieving a cold boot in 3.5 s (compared to 8.1 s with full commercial-grade optimizations without BB) without the need for suspend-to-RAM or hibernation. After this successful deployment, we have released the source code via http://opensource.samsung.com, and BB will be included in the open-source OS, Tizen (http://tizen.org).
title: Информационные технологии в профессиональной деятельности
Creators: name: ELS IPR BOOKS
Publisher: name: Южный институт менеджмента, Ай Пи Эр Медиа
Year: 2017

description: Даны практические задания для выполнения на компьютерной технике (от персонального компьютера до смартфона) и пошаговые руководства по выполнению каждого задания, а также задания для самостоятельной работы студентов. Предназначен для закрепления студентами теоретического материала, изучаемого в курсе «Информационные технологии в профессиональной деятельности».
Opacity in compact extragalactic radio sources and its effect on astrophysical and astrometric studies
Creators: name: Kovalev, Y. Y.
name: Lobanov, A. P.
name: Pushkarev, A. B.
name: Zensus, J. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The apparent position of the "core" in a parsec-scale radio jet (a compact, bright emitting region at the narrow end of the jet) depends on the observing frequency, owing to synchrotron self-absorption and external absorption. While providing a tool probing physical conditions in the vicinity of the core, this dependency poses problems for astrometric studies using compact radio sources. We investigated the frequency-dependent shift in the positions of the cores (core shift) observed with very long baseline interferometry (VLBI) in parsec-scale jets. We discuss related physics, as well as its effect on radio astrometry and the connection between radio and optical positions of astrometric reference objects. We searched for the core shift in a sample of 277 radio sources imaged at 2.3 GHz (13 cm) and 8.6 GHz (4 cm) frequency bands using VLBI observations made in 2002 and 2003. The core shift was measured by referencing the core position to optically thin jet features whose positions are not expected to change with frequency. We present here results for 29 selected active galactic nuclei (AGN) with bright distinct VLBI jet features that can be used in differential measurements and that allow robust measurements of the shift to be made. In these AGN, the magnitude of the measured core shift between 2.3 and 8.6 GHz reaches 1.4 mas, with a median value for the sample of 0.44 mas. Nuclear flares result in temporal variability of the shift. An average shift between the radio (4 cm) and optical (6000 Angstrom) bands is estimated to be approximately 0.1 mas, and it should be taken into account in order to provide the required accuracy of the radio-optical reference frame connection. This can be accomplished with multi-frequency VLBI measurements... (abridged)
description: 11 pages, 8 figures, 2 tables, accepted for publication in the Astronomy and Astrophysics; minor corrections to the manuscript are made
Crüsemann, Frank: Das Alte Testament als Wahrheitsraum des Neuen
Creators: name: Klaiber, Walter
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 62 Nr. 2 (2013): Ökumenische Rundschau, Band 62, Heft 2
title: Основы информационных технологий
Creators: name: ELS IPR BOOKS
Publisher: name: Южный институт менеджмента, Ай Пи Эр Медиа
Year: 2017

description: В практикуме даны задания для выполнения на компьютерной технике (от персонального компьютера до смартфона), пошаговые руководства по выполнению каждого задания, дополнительный материал по темам занятий и задания для самостоятельной работы по закреплению полученных в процессе выполнения практической работы навыков. Предназначен для закрепления студентами теоретического материала, изучаемого в курсе «Основы информационных технологий», овладения на базовом уровне общепрофессиональными компетенциями, предусмотренными федеральным государственным стандартом по направлению подготовки 38.03.01 Экономика (бакалавриат).
Module Assignment in Distributed Systems
Creators: name: Lu, Mi
Publisher: name: figshare
Year: 2021
Subjects: subject: 100503 Computer Communications Networks
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The problem of finding an optimal assignment of a modular program for n processors in a distributed system is studied. We characterize the distributed programs by Stone's graph model and attempt to find an assignment of modules to processors which minimizes the sum of module execution costs and intermodule communication costs. The problem is NP-complete for more than three processors. We first show how to identify all modules which must be assigned to a particular processor under any optimal assignment. This usually results in a significant reduction in the complexity of the optimal assignment problem. We also present a heuristic algorithm for finding assignments and experimentally verify that it almost always finds an optimal assignment.
In-Orbit Aerodynamic Coefficient Measurements using SOAR (Satellite for Orbital Aerodynamics Research)
Creators: name: Crisp, N. H.
name: Roberts, P. C. E.
name: Livadiotti, S.
name: Rojas, A. Macario
name: Oiko, V. T. A.
name: Edmondson, S.
name: Haigh, S. J.
name: Holmes, B. E. A.
name: Sinpetru, L. A.
name: Smith, K. L.
name: Becedas, J.
name: Dominguez, R. M.
name: Sulliotti-Linner, V.
name: Christensen, S.
name: Nielsen, J.
name: Bisgaard, M.
name: Chan, Y-A.
name: Fasoulas, S.
name: Herdrich, G. H.
name: Romano, F.
name: Traub, C.
name: Garcia-Alminana, D.
name: Rodriguez-Donaire, S.
name: Sureda, M.
name: Kataria, D.
name: Belkouchi, B.
name: Conte, A.
name: Seminari, S.
name: Villain, R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The Satellite for Orbital Aerodynamics Research (SOAR) is a CubeSat mission, due to be launched in 2021, to investigate the interaction between different materials and the atmospheric flow regime in very low Earth orbits (VLEO). Improving knowledge of the gas-surface interactions at these altitudes and identification of novel materials that can minimise drag or improve aerodynamic control are important for the design of future spacecraft that can operate in lower altitude orbits. Such satellites may be smaller and cheaper to develop or can provide improved Earth observation data or communications link-budgets and latency. Using precise orbit and attitude determination information and the measured atmospheric flow characteristics the forces and torques experienced by the satellite in orbit can be studied and estimates of the aerodynamic coefficients calculated. This paper presents the scientific concept and design of the SOAR mission. The methodology for recovery of the aerodynamic coefficients from the measured orbit, attitude, and in-situ atmospheric data using a least-squares orbit determination and free-parameter fitting process is described and the experimental uncertainty of the resolved aerodynamic coefficients is estimated. The presented results indicate that the combination of the satellite design and experimental methodology are capable of clearly illustrating the variation of drag and lift coefficient for differing surface incidence angle. The lowest uncertainties for the drag coefficient measurement are found at approximately 300 km, whilst the measurement of lift coefficient improves for reducing orbital altitude to 200 km.
description: 19 pages, 11 figures. Accepted for publication in Acta Astronautica (2020-12-14)
The Gut Virome is Associated with Stress-Induced Changes in Behaviour and Immune Responses in Mice
Creators: name: Bastiaanssen, Thomaz
Publisher: name: Zenodo
Year: 2023

description: The microbiota-gut-brain axis has been shown to play an important role in stress response, however, previous work has focused primarily on the role of the bacteriome. The gut virome constitutes a major portion of the microbiome, with bacteriophages having the potential to remodel bacteriome structure and activity. Here, we use a mouse model of chronic social stress, and employ 16S rRNA and whole metagenomic sequencing on faecal pellets to determine how the virome is modulated by and contributes to the effects of stress. We find that chronic stress led to behavioural, immune, and bacteriome alterations in mice that were associated with changes in the bacteriophage class Caudoviricetes and unassigned viral taxa. To determine if these changes were causally related to stress-associated behavioural or physiological outcomes, we conducted a faecal virome transplant from mice before stress and autochthonously transferred it to mice undergoing chronic social stress. The transfer of the faecal virome protected against stress-associated behaviour sequelae, and restored stress-induced changes in select circulating immune cell populations, cytokine release, bacteriome alterations and gene expression in the amygdala. These data provide evidence that the virome plays a role in the modulation of the microbiota-gut-brain axis during stress, indicating that these viral populations should be considered when designing future microbiome-directed therapies. These are the R and Python scripts used to generate the sequencing data sets.