cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Extreme Beam-forming with Metagrating-assisted Planar Antennas
Creators: name: Xu, Gengyu
name: Hum, Sean V.
name: Eleftheriades, George V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: Optics (physics.optics)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences

description: We present a highly efficient metagrating-assisted antenna (MGA) architecture with a simple integrated feed. Power from a localized line source is distributed throughout the arbitrarily large antenna aperture with the help of a passive and lossless electromagnetic metagrating (MG). With appropriately designed meta-wire loading, the omnidirectional source field can be efficiently transformed into directive radiation. To aid the design process, a 2-dimensional volume-surface integral equation framework which accurately predicts the radiation pattern of the MGA is developed. Through constrained optimization, the directivity of the MGA in the desired direction is maximized. In this way, extreme-angle beam steering is demonstrated.
INGLIZ VA O'ZBEK TILLARIDA NEGATIVLIK KATEGORIYASINING IFODALANISHI
Creators: name: Umurzakova, Aziza
Publisher: name: Zenodo
Year: 2024

description: Ushbu  maqola  Ingliz  va  o’zbek  tillarida  negativlik kategoriyasini  va  ularning  o’xshashlik  va  farqli  tomonlarini  ochib  berishga  bag'ishlangan. Muallif ingliz va o’zbek tillarida qiyosida negativlikni ifodalovchi kategoriyalarni    aniqlaydi  va  unga  yana  bir  qancha  misollar  keltiradi.
Light-Field Microscopy for optical imaging of neuronal activity: when model-based methods meet data-driven approaches
Creators: name: Song, Pingfan
name: Jadan, Herman Verinaz
name: Howe, Carmel L.
name: Foust, Amanda J.
name: Dragotti, Pier Luigi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Optics (physics.optics)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Understanding how networks of neurons process information is one of the key challenges in modern neuroscience. A necessary step to achieve this goal is to be able to observe the dynamics of large populations of neurons over a large area of the brain. Light-field microscopy (LFM), a type of scanless microscope, is a particularly attractive candidate for high-speed three-dimensional (3D) imaging. It captures volumetric information in a single snapshot, allowing volumetric imaging at video frame-rates. Specific features of imaging neuronal activity using LFM call for the development of novel machine learning approaches that fully exploit priors embedded in physics and optics models. Signal processing theory and wave-optics theory could play a key role in filling this gap, and contribute to novel computational methods with enhanced interpretability and generalization by integrating model-driven and data-driven approaches. This paper is devoted to a comprehensive survey to state-of-the-art of computational methods for LFM, with a focus on model-based and data-driven approaches.
description: 20 pages, 9 figures, article accepted by IEEE Signal Processing Magazine
No Such Thing as a Simple Flare: Substructure and QPPs Observed in a Statistical Sample of 20 Second Cadence TESS Flares
Creators: name: Howard, Ward S.
name: MacGregor, Meredith A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: A 20 second cadence TESS monitoring campaign of 226 low-mass flare stars during Cycle 3 recorded 3792 stellar flares of >10^32 erg. We explore the time-resolved emission and substructure in 440 of the largest flares observed at high S/N, 97% of which released energies of >10^33 erg. We discover degeneracy present at 2 minute cadence between sharply-peaked and weakly-peaked flares is common, although 20 second cadence breaks these degeneracies. We better resolve the rise phases and find 46% of large flares exhibit substructure during the rise phase. We observe 49 candidate quasi-periodic pulsations (QPP) and confirm 17 at 3+ sigma. Most of our QPPs have periods less than 10 minutes, suggesting short period optical QPPs are common. We find QPPs in both the rise and decay phases of flares, including a rise-phase QPP in a large flare from Proxima Cen. We confirm the Davenport et al. (2014) template provides a good fit to most classical flares observed at high cadence, although 9% favor Gaussian peaks instead. We characterize the properties of complex flares, finding 17% of complex flares exhibit "peak-bump" morphologies composed of a large, highly impulsive peak followed by a second more gradual Gaussian peak. We also estimate the UVC surface fluences of temperate planets at flare peak and find 1/3 of 10^34 erg flares reach the D90 dose of D. Radiodurans in just 20 seconds in the absence of an atmosphere.
description: 16 pages, 13 figures, 2 tables (machine-readable ancillary files included). Accepted for publication in ApJ after minor revisions
A Hierarchical Model for Human-Robot Interaction
Creators: name: Barfield, Jessica K.
Publisher: name: Zenodo
Year: 2023
Subjects: Social Identity Theory
human-robot interaction
robot anthropomorphism
CASA
hierarchical model

description: This paper proposes a hierarchical model for human interaction with social robots which consists of three tiers, each tier based on an existing theory of human-robot interaction. The three theories which comprise the model are robot anthropomorphism which, among others, is based on the physical appearance of the robot; Social Identity Theory, which discusses how a robot may be classified into social categories; and at the lowest tier of the model, the Computers as Social Actors Theory, in which social rules mediate human-robot interaction. The top level of the model is based on the initial impression that individuals form of robots which is determined primarily by the robot’s physical appearance. At the mid-tier of the model, Social Identity Theory is used to describe how people place robots into social categories, which among others can be based on the perceived race, ethnicity, and gender of the robot. An important consequence of categorizing robots by a social class is that the category may determine whether the robot is judged to be an in-group or out-group member which can lead to different behavioral interactions between humans and robots as described in the third tier of the model. According to the hierarchical model, communication with a robot occurs at the lowest tier of the model and is guided by the process of robot anthropomorphism, Social Identity Theory, and by predictions from the Computers as Social Actor paradigm.
Anwendung von Climate Engineering: Ein Problem für Frieden und Sicherheit
Creators: name: Link, P. Michael
name: Link, Jasmin S. A.
name: Scheffran, Jürgen
Publisher: name: Universität Hamburg
Year: 2023
Subjects: Application of Climate Engineering, problem for peace and security, CE psychological termination effects, CE technologies and existing conflicts, CE consequences for peace and security, stratospheric aerosol injection (SAI), bioenergy with carbon capture and storage (BECCS).

description: Application of Climate Engineering: A problem for peace and security: Although a global consensus about the implementation of climate engineering (CE) technologies is currently unlikely, their initial intention appears to be peaceful. However, the application of some CE technologies requires a steady – or even intensifying – use over long periods of time in order to avoid physical or psychological termination effects. Such CE applications are difficult to reconcile with democratic policy and thus carry a substantial conflict potential. Furthermore, difficulties in measurement or application doses of CE technologies may amplify already existing conflicts. From CE applications, plausible and relevant direct and indirect consequences for peace and security can be derived. The most important linkages of effects and their implications for security are described in complex networks of the consequences of CE applications. These are implemented in a diffusion model to assess the predominant activities and sinks that are possible in such network structures. Applying this model to the examples of stratospheric aerosol injection (SAI) and bioenergy with carbon capture and storage (BECCS), the immanent political and socioeconomic consequences become apparent. Interestingly, some of these effects can already be triggered by information about the CE application, e.g. by fake news.
Resonant excitation of the axion field during the QCD phase transition
Creators: name: Sikivie, Pierre
name: Xue, Wei
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We find that the adiabatic fluctuations produced in the primordial plasma by cosmological inflation resonantly excite the axion field during the QCD phase transition by pumping axions from low momentum modes to modes with momentum up to of order $\sqrt{3} m$ where $m$ is the axion mass. We derive the momentum distribution of the excited axions. The fraction of cold axions that get excited is of order one if the axion mass is larger than a few $μ$eV. The effect occurs whether inflation happens before or after the Peccei-Quinn phase transition.
description: 18 pages, 4 figures. A few typographical errors were corrected. Version to appear in Physical Review D
title: Получение избирательных угольных адсорбентов для селективной очистки дистиллированного глицерина
Creators: name: Савриева, Д.Д.
name: Салиханова, Д.С.
name: Эшметов, И.Д.
name: Абдурахимов, А.А.
name: Агзамова, Ф.Н.
Publisher: name: Tashkent State Technical University Named after Islam Karimov
Year: 2018

description: Установлена возможность получения избирательных адсорбентов из местных углей для селективной очистки дистилированного глицерина. Определена зависимость изменения пористости по ацетону местных углей от температуры нагрева. Установлено, что без доступа воздуха при 300 С можно получить избирательный адсорбент, т.е. с пористостью по ацетону 49,9%. Исследовано влияние времени на пористость адсорбента и установлено оптимальная время пиролиза 180 минут.
title: Распределение механических примесей по высоте конической части гидроциклона при очистке углеводородного сырья
Creators: name: Худайбердиев, А.А.
name: Хурмаматов, А.М.
name: Исмоилов, О.Ю.
Publisher: name: Tashkent State Technical University Named after Islam Karimov
Year: 2018

description: Приведены результаты исследования процесса очистки углеводородного сырья от механических примесей при помощи гидроциклона. Построены кривые распределения эквивалентного диаметра «равновесных» частиц по высоте конической части опытного образца гидроциклона (D = 0,4 м, hк = 0,65 м). Анализ полученных данных показал возможности центробежной очистки углеводородного сырья от частиц с размером от 0,024 до 0,2 мм, в зависимости от физических свойств разделяемых фаз. Закономерность распределения эквивалентного диаметра частиц dч = f(hк) может быть использована в качестве рекомендации для выбора формул конической части гидроциклонов.
Disentangling Jet Modification in Jet Simulations and in Z+Jet Data
Creators: name: Brewer, Jasmine
name: Brodsky, Quinn
name: Rajagopal, Krishna
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the impact of selection biases on jet structure and substructure observables and separate these effects from effects caused by jet quenching. We use the angular separation $ΔR$ of the hardest splitting in a jet as the primary example observable. We first conduct a simplified Monte Carlo study in which it is possible to identify the same jet after quenching in a heavy ion collision and as it would have been if it had formed in vacuum. We select a sample of jets by placing a cut on their quenched $p_T$ and, as is possible only in a Monte Carlo study, compare to the same jets unquenched, and see that the $ΔR$ distribution seems to be unmodified. However, if we select a sample of jets formed in vacuum by placing a cut on their unquenched $p_T$ and compare to those same jets after quenching, we see a significant enhancement in the number of jets with large $ΔR$, primarily due to the soft particles in the jet that originate from the wake in the droplet of quark-gluon plasma excited by the parton shower. We confirm that the jets contributing to this enhancement are those jets which lost the most energy, which were not included in the sample selected after quenching; jets selected after quenching are those which lose a small fraction of their energy. Next, we employ a method that is available to experimentalists: in a sample of jets with a recoiling $Z$ boson, we show that selecting jets based on the jet $p_T$ after quenching yields a $ΔR$ distribution that appears unmodified while selecting a sample of jets produced in association with a $Z$ boson whose (unmodified) $p_T$ is above some cut yields a significant enhancement in the number of jets with large $ΔR$. We again confirm that this is due to particles from the wake, and that the jets contributing to this enhancement are those which have lost a significant fraction of their energy.
description: 16 pages, 8 figures
ANALYSIS OF RICE CONSUMPTION BY HOUSEHOLDS IN THE POST FUEL SUBSIDY REMOVAL IN ABUJA MUNICIPAL AREA COUNCIL (AMAC), FEDERAL CAPITAL TERRITORY (FCT), NIGERIA
Creators: name: Simpa, , Ondeku James
name: Idisi,, Park O. PhD
name: Adeagbo,, Benjamin A. PhD
name: Atteh,, A. P
name: Salihu,, Maimunat Umar
name: Musa,, Ganaka Kubi
name: Ogwuegbu,, C. Odinakachi
Publisher: name: SADI Journal
Year: 2024
Subjects: Rice, Consumption, Fuel Subsidy, Quantity, Abuja

description: This paper examined rice consumption by the households in the post fuel subsidy removal (PFSR) in Abuja Municipal Area Council, FCT, Nigeria. The objectives of the study include an analysis of factors that influence rice consumption in the PFSR, patterns or characteristics of rice consumption, a correlation between the quantity of rice consumed and some socioeconomic variables. A multi-stage random sampling technique was employed to select 180 respondents. Structured questionnaires were used to elicit data from the respondents. The data was analysed using inferential and descriptive statistics. The results showed that the majority of the household heads are married, educated, have a household size of 5-7 persons, and with an income level above N200,000.00. The quantity of rice consumed per meal is lower during PFRS than during PrFSR, with a mean of 3.5 kg. The number of days in between rice consumption during meals (mean of 5.2 days) and the percentage of income expended on rice consumption (increased from 5 to 14%) is higher in PFRS than pre-fuel subsidy removal (PrFRS). The household’s habit, average age of household members, household size, and income level influence the quantity of rice consumed by the households during PFSR; but it is only the average age of household members and household size that were significant at the 10% alpha level. However, 60% of the variation in the quantity of rice consumption in PFSR was explained by all the variables considered in the model. The hypothesis test confirmed the difference between the quantities of rice consumed during PrFSR and PFSR. Based on these findings, this study recommends that the government should eradicate or reduce to a minimum all the factors that negatively affect the availability, accessibility and affordability of rice; rice with its ingredients (palliative) should be purchased and distributed to meet the demand of the people; the average age of the household members should be considered when formulating policies on food supply and food security; the people should be encouraged to modify their habits on rice consumption; and the government should consider giving out rice as palliative more frequently
4-YEAR STUDY: Why 400+ Businesses Outsourced Their Future by Investing in Boutique “Vision Services” to Create Team Alignment, Increase Employee Engagement, Retain or Attract Top Talent, and The Growing Schism of Discontent Between Company Workers and Leadership Teams
Creators: name: de la Guerra, Michael
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 350707
subject: Leadership
classificationCode: 350704
subject: Entrepreneurship
classificationCode: 350709
subject: Organisation and management theory
classificationCode: 350710
subject: Organisational behaviour
classificationCode: 350711
subject: Organisational planning and management

description: The ability to define and communicate a clear vision is a valuable skill that serves various individuals throughout organizations of any size; Google’s manager research, for example, found it to be one of the most important behaviors high-scoring managers exhibited. Cameron Herold wrote the book Vivid Vision: A Remarkable Tool For Aligning Your Business Around a Shared Vision of the Future, after developing a revolutionarily tangible tool businesses can use to clarify and communicate their vision, and partnered with copywriting agency Conscious Copy & Co. to help 400+ companies better align their teams, increase engagement, retain talented employees, and attract more top talent, through boutique Vivid Vision services. This study led by one of their head writers distilled down four years' worth of qualitative data to uncover motivating factors and purchase intent, resulting in valuable key findings. While certain details must remain confidential to preserve client privacy, from scrappy startups to global manufacturing organizations, their team worked across dozens of industries, with businesses that varied in size and profitability. The research analyzed hundreds of interviews with these well-established companies, some household names, with revenue as high as nine figures. The full breakdown offers unique insight into the intriguing world of boutique “vision services” and how leaders are investing in them to “outsource their company’s future.”
Cascaded Classifier for Pareto-Optimal Accuracy-Cost Trade-Off Using off-the-Shelf ANNs
Creators: name: Latotzke, Cecilia
name: Loh, Johnson
name: Gemmeke, Tobias
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Machine-learning classifiers provide high quality of service in classification tasks. Research now targets cost reduction measured in terms of average processing time or energy per solution. Revisiting the concept of cascaded classifiers, we present a first of its kind analysis of optimal pass-on criteria between the classifier stages. Based on this analysis, we derive a methodology to maximize accuracy and efficiency of cascaded classifiers. On the one hand, our methodology allows cost reduction of 1.32x while preserving reference classifier's accuracy. On the other hand, it allows to scale cost over two orders while gracefully degrading accuracy. Thereby, the final classifier stage sets the top accuracy. Hence, the multi-stage realization can be employed to optimize any state-of-the-art classifier.
description: The final accepted publication was presented on the 7th International Conference on Machine Learning, Optimization, Data Science (LOD), October 4 - 8, 2021 in Grasmere, Lake District, England
Arbitrarily high-order energy-conserving methods for Poisson problems
Creators: name: Amodio, Pierluigi
name: Brugnano, Luigi
name: Iavernaro, Felice
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65L05, 65P10

description: In this paper we are concerned with energy-conserving methods for Poisson problems, which are effectively solved by defining a suitable generalization of HBVMs, a class of energy-conserving methods for Hamiltonian problems. The actual implementation of the methods is fully discussed, with a particular emphasis on the conservation of Casimirs. Some numerical tests are reported, in order to assess the theoretical findings.
description: 30 pages, 5 figures, 3 tables
title: Эффективность деятельности коммерческих банков: понятие и методы ее оценки
title: The operating efficiency of commercial banks: definition and methods for assessment
Creators: name: Каратаева, Галина Евгеньевна
name: Шихвеледова, Джамиля Кямильевна
Publisher: name: Издательский центр СурГУ
Year: 2020

description: В статье представлен обзор подходов к определению эффективности деятельности банков. С помощью общепринятой классификации видов эффективности банковской деятельности выделены методы оценки эффективности деятельности коммерческого банка, наиболее актуальные в текущих экономических условиях; описаны их преимущества и недостатки. Сделан вывод о том, что именно применение сбалансированной системы показателей позволяет провести комплексную оценку финансовых и нефинансовых аспектов деятельности современного банка, определить достигнутый уровень ее эффективности и выявить пути дальнейшего развития организации.
description: The article provides an overview of approaches to determining the operating efficiency of banks. Using the generally accepted classification of the bank's activities, the authors highlight methods of measuring the effectiveness of commercial bank’s activities, the most relevant in the current economic environment, their capabilities and limitations. The authors conclude that the balanced indicative system’s application allows conducting a comprehensive assessment of financial and non-financial aspects of the modern bank's activities, to determine the level of its effectiveness achieved and to identify the ways of further organization development.
Axial perturbations of neutron stars with shift symmetric conformal coupling
Creators: name: Boumaza, Hamza
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this present work, the axial quasi-normal modes of neutron stars, with a shift symmetric conformal coupling, are studied for different realistic equations of state. First, we derive the background equations in static and spherically symmetric spacetime and then we solve them numerically by taking into account the continuity and regularity conditions. Second, we extend our calculus to the perturbed level where we derive the equations of motion as well as the ghost and Laplacian instability. We find that the proposed model is free from these instabilities everywhere. We find also that the variation of the quasi-normal modes is affected by the conformal coupling where the deviation from general relativity is observed. Finally, with this motivation, we fit our numerical result with universal relations for axial quasi-normal modes using five type of realistic equations of state. The universality of the scaled frequency and damping time in terms of the compactness in this model is confirmed in this model.
Interacting systems and wormholes
Creators: name: Betzios, Panos
name: Kiritsis, Elias
name: Papadoulaki, Olga
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider a class of tripartite systems for which two $d$-dimensional QFTs are cross-coupled via a third $d+1$-dimensional "messenger" QFT. We analyse in detail the example of a pair of one-dimensional matrix quantum mechanics, coupled via a two-dimensional theory of the BF-type and compute its partition function and simple correlators. This construction is extendible in higher dimensions, using a Chern-Simons "messenger" theory. In all such examples, the exact partition function acquires a form, speculated to correspond to systems dual to Euclidean wormholes and the cross correlators are sufficiently soft and consistent with analogous gravitational calculations. Another variant of the tripartite system is studied, where the messenger theory is described by a non-self-interacting (matrix)-field, reaching similar conclusions. While the Euclidean theories we consider are perfectly consistent, the two possible analytic continuations into Lorentzian signature (messenger vs. boundary QFT directions) of the tripartite models, reveal physical features and "pathologies" resembling those of the expected Lorentzian gravitational backgrounds.
description: 89 pages, discussion on the Hilbert space structure, published version
Quantum synchronisation and clustering in chiral networks
Creators: name: Lorenzo, Salvatore
name: Militello, Benedetto
name: Napoli, Anna
name: Zambrini, Roberta
name: Palma, G. Massimo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the emergence of synchronisation in a chiral network of harmonic oscillators. The network consists of a set of locally incoherently pumped harmonic oscillators coupled pairwise in cascade with travelling field modes. Such cascaded coupling leads to feedback-less dissipative interaction between the harmonic oscillators of the pair which can be described in terms of an effective pairwise hamiltonian a collective pairwise decay. The network is described mathematically in terms of a directed graph. By analysing geometries of increasing complexity we show how the onset of synchronisation depends strongly on the network topology, with the emergence of synchronised communities in the case of complex networks. The quantum nature of the non local correlation between network nodes is assessed.
description: 11 pages, 8 figures
The $D_{s0}(2590)^+$ as the dressed $c\bar s(2^1S_0)$ meson in a coupled-channels calculation
Creators: name: Ortega, Pablo G.
name: Segovia, Jorge
name: Entem, David R.
name: Fernandez, Francisco
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The recent discovery of the $D_{s0}(2590)^+$ meson by the LHCb Collaboration has stimulated the analysis of meson-meson channels effects in the two-body quark-antiquark meson spectrum. This resonance, assigned to the radial excitation of the pseudoscalar $D_s^+$ meson, has a mass much lower than the predictions of naive quark models, which could indicate a non-negligible $D^{(*)}K^{(*)}$ coupling which reduces its mass. Based on the importance of nearby meson-meson thresholds in the dynamics of P-wave $D_s$ mesons such as the $D_{s0}^*(2317)^+$ and $D_{s1}(2460)^+$, in this work we perform a coupled-channels calculation including the $D^{(*)}K^{(*)}$, $D_s^{(*)}ω$ and $D_s^*η$ channels, and study the impact of incorporating those channels in the mass of the bare $c\bar s$. The coupling between two and four-quark sectors is done by means of the $^3P_0$ mechanism, with all the parameters constrained from previous studies of the heavy meson spectroscopy. The masses, widths and production line shapes of the resulting state are analyzed.
description: 7 pages, 3 figures, 3 tables
On quadrature rules for solving Partial Differential Equations using Neural Networks
Creators: name: Rivera, Jon A.
name: Taylor, Jamie M.
name: Omella, Ángel J.
name: Pardo, David
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: Neural Networks have been widely used to solve Partial Differential Equations. These methods require to approximate definite integrals using quadrature rules. Here, we illustrate via 1D numerical examples the quadrature problems that may arise in these applications and propose different alternatives to overcome them, namely: Monte Carlo methods, adaptive integration, polynomial approximations of the Neural Network output, and the inclusion of regularization terms in the loss. We also discuss the advantages and limitations of each proposed alternative. We advocate the use of Monte Carlo methods for high dimensions (above 3 or 4), and adaptive integration or polynomial approximations for low dimensions (3 or below). The use of regularization terms is a mathematically elegant alternative that is valid for any spacial dimension, however, it requires certain regularity assumptions on the solution and complex mathematical analysis when dealing with sophisticated Neural Networks.
A fully-automated end-to-end pipeline for massive black hole binary signal extraction from LISA data
Creators: name: Katz, Michael L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The LISA Data Challenges Working Group within the LISA Consortium has started publishing datasets to benchmark, compare, and build LISA data analysis infrastructure as the Consortium prepares for the launch of the mission. We present our solution to the dataset from LISA Data Challenge (LDC) 1A containing a single massive black hole binary signal. This solution is built from a fully-automated and GPU-accelerated pipeline consisting of three segments: a brute-force initial search; a refining search that uses the efficient Likelihood computation technique of Heterodyning (also called Relative Binning) to locate the maximum Likelihood point; and a parameter estimation portion that also takes advantage of the speed of the Heterodyning method. This pipeline takes tens of minutes to evolve from randomized initial parameters throughout the prior volume to a converged final posterior distribution. Final posteriors are shown for both datasets from LDC 1A: one noiseless data stream and one containing additive noise. A posterior distribution including higher harmonics is also shown for a self-injected waveform with the same source parameters as is used in the original LDC 1A dataset. This higher-mode posterior is shown in order to provide a more realistic distribution on the parameters of the source.
description: 14 pages, 6 figures, 3 tables
Disorders can induce continuously varying universal scaling in driven systems
Creators: name: Haldar, Astik
name: Basu, Abhik
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We elucidate the nature of universal scaling in disordered driven models. We in particularly explore the intriguing possibility of whether coupling with quenched disorders can lead to continuously varying universality classes. We examine this question in the context of the Kardar-Parisi-Zhang (KPZ) equation, with and without a conservation law, coupled with quenched disorders of appropriate structures. By using a renormalisation group (RG) framework, we show when the disorder is relevant in the RG sense, the scaling exponents can depend continuously on a dimensionless parameter that defines the disorder variance. This result is generic and holds for quenched disorders with or without spatially long ranged correlations, as long as the disorder remains "relevant perturbation" on the pure system in a renormalisation group sense and a dimensionless parameter naturally exists in its variance. We speculate on its implications for generic driven systems with quenched disorders, and compare and contrast with the scaling displayed in the presence of annealed disorders.
description: 8 Figures, Published 3 March 2022
Phylogenomics resolves the higher-level phylogeny of herbivorous eriophyoid mites (Acari: Eriophyoidea)
Creators: name: Xue, Xiao-Feng
name: Zhang, Qi
name: Lu, Yi-Wen
name: Liu, Xin-Yu
name: Li, Ye
name: Gao, Wei-Nan
name: Sun, Jing-Tao
name: Hong, Xiao-Yue
name: Shao, Renfu
Publisher: name: Zenodo
Year: 2023
Subjects: Mitochondrial genomes
Gene order
higher-level phylogeny

description: Eriophyoid mites (Eriophyoidea) are among the largest groups in the Acari; their higher-level phylogeny, however, remains unresolved due to the availability of limited number of morphological characters, some of which are suspected as homoplasy. Nevertheless, the eriophyoid mites sequenced to date showed highly variable mitochondrial (mt) gene orders, which could potentially be useful for resolving the higher-level phylogenetic relationships. Here, we sequenced and compared the complete mt genomes of 153 eriophyoid mite species, which showed 54 patterns of rearranged mt gene orders relative to that of the hypothetical ancestor of arthropods. The shared derived mt gene clusters support the monophyly of eriophyoid mites (Eriophyoidea) as a whole and the monophylies of six clades within the Eriophyoidea. These monophyletic groups and their relationships were largely supported in the phylogenetic trees inferred from mt genome sequences as well. Our molecular dating results showed that the Eriophyoidea originated in the Triassic and diversified in the Cretaceous, coinciding with the diversification of angiosperms. This study demonstrates the use of derived mt gene clusters in unveiling the higher-level phylogeny of eriophyoid mites, and underlines the origin of these mites and their co-diversification with angiosperms.
description: Funding provided by: National Natural Science Foundation of China
Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100001809
Award Number: 31970437Funding provided by: National Natural Science Foundation of China
Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100001809
Award Number: 32161143014Funding provided by: National Natural Science Foundation of China
Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100001809
Award Number: 31672337
Higgs Boson Production and Quark Scattering Amplitudes at High Energy through the Next-to-Next-to-Leading Power in Quark Mass
Creators: name: Liu, Tao
name: Modi, Sneh
name: Penin, Alexander A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the amplitudes of the quark scattering by an external electromagnetic field and of the light quark mediated Higgs boson production via gluon fusion in the high-energy limit. The asymptotic behavior of the quark form factors is obtained in the double-logarithmic approximation to all orders in strong coupling constant through ${\cal O}(m_q^3)$ in the small quark mass expansion and the asymptotic formula is given in a closed analytic form. In the case of the two-gluon Higgs boson form factor we obtain a complete analytic result for the three-loop ${\cal O}(m_q^3)$ double-logarithmic term while the all-order analysis is performed in the large-$N_c$ limit of QCD and for the abelian gauge group. An estimate of the high-order high-power light quark mass effect in the Higgs boson production and decay is given.
description: 20 pages, 4 figures
Effects of Forcing on Shocks and Energy Dissipation in Interstellar and Intracluster Turbulences
Creators: name: Cho, Hyunjin
name: Ryu, Dongsu
name: Kang, Hyesung
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Observations indicate that turbulence in the interstellar medium (ISM) is supersonic ($M_{\rm turb}\gg1$) and strongly magnetized ($β\sim0.01-1$), while in the intracluster medium (ICM) it is subsonic ($M_{\rm turb}\lesssim1$) and weakly magnetized ($β\sim100$). Here, $M_{\rm turb}$ is the turbulent Mach number and $β$ is the plasma beta. We study the properties of shocks induced in these disparate environments, including the distribution of the shock Mach number, $M_s$, and the dissipation of the turbulent energy at shocks, through numerical simulations using a high-order accurate code based on the WENO scheme. In particular, we investigate the effects of different modes of the forcing that drives turbulence: solenoidal, compressive, and a mixture of the two. In the ISM turbulence, while the density distribution looks different with different forcings, the velocity power spectrum, $P_v$, on small scales exhibits only weak dependence. Hence, the statistics of shocks depend weakly on forcing either. In the ISM models with $M_{\rm turb}\approx10$ and $β\sim0.1$, the fraction of the turbulent energy dissipated at shocks is estimated to be $\sim15~\%$, not sensitive to the forcing mode. In contrast, in the ICM turbulence, $P_v$ as well as the density distribution show strong dependence on forcing. The frequency and average Mach number of shocks are greater for compressive forcing than for solenoidal forcing, so is the energy dissipation. The fraction of ensuing shock dissipation is in the range of $\sim10-35~\%$ in the ICM models with $M_{\rm turb}\approx0.5$ and $β\sim10^6$. The rest of the turbulent energy should be dissipated through turbulent cascade.
description: 18 pages, 10 figures, accepted for publication in ApJ
title: Factor Investing in Fixed Income Instruments
Creators: name: Vladimirova, Desislava
Publisher: name: UNSPECIFIED
Year: 2024

description: Factor investing in credit requires not only a deep knowledge of the underlying systematic
factors, but also expertise in their implementation, which can be influenced by lack of
liquidity, interactions with other systematic risks, or increasing regulations to adopt
sustainability measures. Previous research has focused on formulating general factor
models to identify the optimal set of common factors, but important questions remain
unanswered. This dissertation seeks to fill a gap in the literature on factor investing
in emerging market corporate bonds in the presence of illiquidity and country-specific
risk. Additionally, this thesis analyzes the integration of sustainability measures into
systematic factor strategies.
The first study addresses the liquidity of emerging market corporate bonds, which
appears to be significantly lower than that of developed market bonds and is also
influenced by macroeconomic variables. Additionally, the paper presents a liquidity
forecast model that reduces the proportion of illiquid assets in a factor portfolio. The
second study analyzes the cross-sectional variation of emerging market corporate bonds
and finds that it is significantly affected by country-specific risk. Furthermore, it
shows that an asset pricing model designed specifically for emerging markets produces
better out-of-sample model fit and portfolio performance than models designed for
developed markets. The final study reveals the implications of integrating sustainability
targets in systematic credit strategies. The results indicate a non-linear, concave
relationship between factor and impact investing, suggesting that investors can improve
their sustainability/outperformance profile at marginal cost.
title: Interventions infirmières en milieu scolaire face à l'alcoolisme parental
title: revue de littérature et propositions d'interventions
titleType: Subtitle
title: Interventions infirmières en milieu scolaire face à l'alcoolisme parental
titleType: AlternativeTitle
Creators: name: Combernous, Mathilde
name: Gonçalves, Amélie
Publisher: name: Unknown
Year: 0
Subjects: subject: Infirmière scolaire
subject: Accompagnement de l'enfant
subject: Parents alcooliques

description: Cette revue de littérature propose une vision du rôle infirmier dans la prise en charge des enfants en âge scolaire afin de leur assurer un développement psychosocial physiologique dans les situations où un parent est alcoolodépendant.
Cancellation of IR Divergences in 3d Abelian Gauge Theories
Creators: name: Galati, Giovanni
name: Serone, Marco
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Three dimensional abelian gauge theories classically in a Coulomb phase are affected by IR divergences even when the matter fields are all massive. Using generalizations of Ward-Takahashi identities, we show that correlation functions of gauge-invariant operators are IR finite to all orders in perturbation theory. Gauge invariance is sufficient but not necessary for IR finiteness. In particular we show that specific gauge-variant correlators, including the two-point function of matter fields, are also IR finite to all orders in perturbation theory. Possible applications of these results are briefly discussed.
description: 22 pages; V2: JHEP published version
Citizen ASAS-SN Data Release I: Variable Star Classification Using Citizen Science
Creators: name: Christy, C. T.
name: Jayasinghe, T.
name: Stanek, K. Z.
name: Kochanek, C. S.
name: Way, Z.
name: Prieto, J. L.
name: Shappee, B. J.
name: Holoien, T. W. -S.
name: Thompson, T. A.
name: Schneider, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present the first results from Citizen ASAS-SN, a citizen science project for the All-Sky Automated Survey for Supernovae (ASAS-SN) hosted on the Zooniverse platform. Citizen ASAS-SN utilizes the newer, deeper, higher cadence ASAS-SN $g$-band data and tasks volunteers to classify periodic variable star candidates based on their phased light curves. We started from 40,640 new variable candidates from an input list of ${\sim} 7.4$ million stars with $δ< -60^\circ$ and the volunteers identified 10,420 new discoveries which they classified as 4,234 pulsating variables, 3,132 rotational variables, 2,923 eclipsing binaries, and 131 variables flagged as Unknown. They classified known variable stars with an accuracy of 89% for pulsating variables, 81% for eclipsing binaries, and 49% for rotational variables. We examine user performance, agreement between users, and compare the citizen science classifications with our machine learning classifier updated for the $g$-band light curves. In general, user activity correlates with higher classification accuracy and higher user agreement. We used the user's "Junk" classifications to develop an effective machine learning classifier to separate real from false variables, and there is a clear path for using this "Junk" training set to significantly improve our primary machine learning classifier. We also illustrate the value of Citizen ASAS-SN for identifying unusual variables with several examples.
description: 19 pages, 20 figures, 4 tables. Submitted to MNRAS. The DR1 catalog and light curves are available here: https://drive.google.com/drive/folders/1sLyJuOTAdEfccSOVkBIhb9YlK6JfOFXl?usp=sharing
Electric current on surface of a metal/superconductor in axion/hidden-photon background
Creators: name: Kishimoto, Yasuhiro
name: Nakayama, Kazunori
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We derive the electric current on surface of a normal metal or superconductor induced by the light bosonic dark matter, such as axion or hidden photon, by appropriately taking account of the boundary condition of the electric and magnetic field at the surface. We discuss detection possibility of such an electric current.
description: 22 pages
Der lange Weg bis zu Aussagen in völkerrechtlich bindenden Umweltabkommen zu technischen Eingriffen in das Klimasystem
Creators: name: Graßl, Hartmut
Publisher: name: Universität Hamburg
Year: 2023
Subjects: International agreements, technical binding environmental agreements, technical interventions in climate system, Paris Agreement, Climate Engineering (CE), carbon dioxide removal, CO2-storage in the Earth's crust, Convention on Biological Diversity, CE no mentioning of CE in any parts of UN conventions.

description: The long road to statements in international agreements on technical binding environmental agreements on technical interventions in the climate system: The hesitant global climate politics since about 30 years has led – according to the Intergovernmental Panel on Climate Change (IPCC) – to the situation that the goals of the Paris Agreement to the UN Framework Convention on Climate Change can only be reached - besides drastic reductions of greenhouse gas emissions - by Climate Engineering (CE) methods, like carbon dioxide removal and its storage in the Earth’s crust. There is no direct mentioning of CE in the binding parts of UN conventions on the environment. Only the Convention on Biological Diversity has decided in 2010 on a moratorium for large-scale applications of all geoengineering methods and has confirmed it in subsequent COPs.
Lois autochtones, loi sur la propriété intellectuelle et politiques muséales
Creators: name: Bell, Catherine E
name: Lai, Jessica
name: Skorodenski, Laura K
name: Kerbiriou, Anne-Hélène
Publisher: name: Open Access Te Herenga Waka-Victoria University of Wellington
Year: 2023
Subjects: subject: Anthropology
subject: FOS: Sociology

description: La question des relations respectueuses et, dans le cadre de ces relations, la question de la conciliation des lois et des valeurs relatives à l’usage et au contrôle du patrimoine immatériel autochtone, sont soulevées dans de nombreux contextes muséaux, entre autres en ce qui concerne : le rapatriement des objets de culture matérielle et des informations associées ; la cogestion des informations et des expressions culturelles qui étaient (ou ont été) considérées comme sensibles ou sacrées par une communauté autochtone ; les données et les résultats des recherches portant sur les Peuples autochtones ou menées sur leurs territoires ; et les images numériques et les procédés multimédias conçus pour améliorer les expositions ou l’accès aux informations, ainsi que la participation des Autochtones à l’interprétation et au contrôle des collections et/ou la participation du grand public par l’intermédiaire des technologies actuelles (par exemple, les « musées virtuels »). Cependant, la nature particulière des normes occidentales de la propriété intellectuelle (dictées dans une large mesure par des contraintes internationales) et la scission entre matériel et immatériel dans le domaine de la propriété occidentale compliquent le tableau. Cet article décrit l’environnement juridique et politique actuel du traitement du patrimoine immatériel dans les expositions et les collections muséales et la façon dont la Loi sur la propriété intellectuelle, en particulier sur les questions des marques de commerce et des droits d’auteur, présente autant d’opportunités que de difficultés pour la mise en oeuvre de politiques acceptables vis-à-vis des lois autochtones et de relations respectueuses avec les Autochtones.
Magnetic quivers and line defects -- On a duality between 3d N=4 unitary and orthosymplectic quivers
Creators: name: Nawata, Satoshi
name: Sperling, Marcus
name: Wang, Hao Ellery
name: Zhong, Zhenghao
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Supersymmetric Sp(k) quantum chromodynamics with 8 supercharges in space-time dimensions 3 to 6 can be realised by two different Type II brane configurations in the presence of orientifolds. Consequently, two types of magnetic quivers describe the Higgs branch of the Sp(k) SQCD theory. This is a salient example of a general phenomenon: a given hyper-Kahler Higgs branch may admit several magnetic quiver constructions. It is then natural to wonder if these different magnetic quivers, which are described by 3d N=4 theories, are dual theories. In this work, the unitary and orthosymplectic magnetic quiver theories are subjected to a variety of tests, providing evidence that they are IR dual to each other. For this, sphere partition function and supersymmetric indices are compared. Also, we study half BPS line defects and find interesting regularities from the viewpoints of exact results, brane configurations, and one-form symmetry.
description: v3: 43 pages + appendices; added Sec. 4.4 on refining global symmetries; improved discussion of Sp(k) with Nf=2k+1 flavours; added references; to appear in JHEP