cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Fluctuations and phase transitions in quantum Ising systems
Creators: name: McKenzie, Ryan
Publisher: name: University of British Columbia
Year: 2016

description: The quantum Ising model is perhaps the simplest possible model of a quantum magnetic material. Despite its simplicity, its versatility and wide range of applications, from quantum computation, to combinatorial optimization, to biophysics, make it one of the most important models of modern physics. In this thesis, we develop a general framework for studying quantum Ising systems with an arbitrary single ion Hamiltonian, with emphasis on the effects of quantum fluctuations, and the quantum phase transition between paramagnetic and ferromagnetic states that occurs when a magnetic field is applied transverse to the easy axis of the system. The magnetic insulating crystal LiHoF₄ is a physical realization of the quantum Ising model, with the additional features that the dominant coupling between spins is the long range dipolar interaction, and each electronic spin is strongly coupled to a nuclear degree of freedom. These nuclear degrees of freedom constitute a spin bath environment acting on the system. In this thesis, we present an effective low temperature Hamiltonian for LiHoF₄ that incorporates both these features, and we analyze the effects of the nuclear spin bath on the system. We find the lowest energy crystal field excitation in the system is gapped at the quantum critical point by the presence of the nuclear spins, with spectral weight being transferred down to a lower energy electronuclear mode that fully softens to zero at the quantum critical point. Furthermore, we present a toy model, the spin half spin half model, that illustrates the effects of an anisotropic hyperfine interaction on a quantum Ising system. We find the critical transverse field is increased when the longitudinal hyperfine coupling is dominant, as well as an enhancement of both the longitudinal electronic susceptibility and an applied longitudinal field. In addition, we present a field theoretic formalism for incorporating the effects of fluctuations beyond the random phase approximation in general quantum Ising systems. We find that any regular on site interaction, such as a nuclear spin bath, does not fundamentally alter the critical properties of a quantum Ising system. This formalism is used to calculate corrections to the magnetization of LiHoF₄.
The Unusual Superconducting State at 49 K in Electron-Doped CaFe2As2 at Ambient
Creators: name: Lv, B.
name: Deng, L. Z.
name: Gooch, M.
name: Wei, F. Y.
name: Sun, Y. Y.
name: Meen, J.
name: Xue, Y. Y.
name: Lorenz, B.
name: Chu, C. W.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report the detection of unusual superconductivity up to 49 K in single crystalline CaFe2As2 via electron-doping by partial replacement of Ca by rare-earth. The superconducting transition observed suggests the possible existence of two phases: one starting at ~ 49 K, which has a low critical field ~ 4 Oe, and the other at ~ 21 K, with a much higher critical field > 5 T. Our observations are in strong contrast to previous reports of doping or pressurizing layered compounds AeFe2As2 (or Ae122), where Ae = Ca, Sr or Ba. In Ae122, hole-doping has been previously observed to generate superconductivity with a transition temperature (Tc) only up to 38 K and pressurization has been reported to produce superconductivity with a Tc up to 30 K. The unusual 49 K phase detected will be discussed.
description: 11 pages, 8 figures
Emerging Universe from Scale Invariance
Creators: name: del Campo, Sergio
name: Guendelman, Eduardo
name: Herrera, Ramon
name: Labrana, Pedro
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider a scale invariant model which includes a $R^{2}$ term in action and show that a stable "emerging universe" scenario is possible. The model belongs to the general class of theories, where an integration measure independent of the metric is introduced. To implement scale invariance (S.I.), a dilaton field is introduced. The integration of the equations of motion associated with the new measure gives rise to the spontaneous symmetry breaking (S.S.B) of S.I. After S.S.B. of S.I. in the model with the $R^{2}$ term (and first order formalism applied), it is found that a non trivial potential for the dilaton is generated. The dynamics of the scalar field becomes non linear and these non linearities are instrumental in the stability of some of the emerging universe solutions, which exists for a parameter range of the theory.
description: 21 pages, 4 figures. Accepted for publication in JCAP
title: Valuing disorder: perspectives on radical contingency in modern society
Creators: name: Scanlan, John
Publisher: name: University of Glasgow
Year: 2001

description: This thesis explores the relationship between social and individual forms of ordering social life on one hand, and the emergence of a number of ‘spheres’ of disorder in the experience of life on the other. In modern society such evidence of disorder can only be characterised in terms that reinforce the negative or formless experience of the human confrontations with disorder. Manifestations of radical contingency (taken as the cognitive residue of such disorder) in experience are thus contrasted with the progress and limits of reason and desire (which create the ‘valuable’ part of life), and these are further examined within a language of being that establishes the discordant nature of the relationship. It is argued that reason and desire, in creating value, always construct an edifice of social and personal expectation that is justified on the basis of the reliability of causal relations between phenomena in lived experience, and in so doing ‘make’ an objective and orderly social world. Several notions central to an understanding of the accumulation of categories of being in modern society are examined as the positive expression of the conditions of autonomous action, and thus as crucial determinants of value and identity. The central relationship is further investigated through the elaboration of three negative categories of experience, which are seen to contain individual and social forms of action that forcefully remove, or contradict order and autonomous freedom as it is here defined. The thesis is therefore divided into three parts. Part 1 examines the loss of autonomy through gambling, and specifically through the singular experience of the wager, which is seen to be an intensification of the motion that constitutes life, but that boldly refuses to be contained, as rational autonomy would dictate. Part 2 deals with the atomisation of knowledge and experience in modern society, looking specifically at instances of ‘non-representational’ art of the twentieth century as the residue of developments that had as a positive aim the refinement of experience. Part 3 deals with the material exclusion of various kinds of garbage resulting from both social and technological progress, and from the emergence of a multiplicity of opportunities for the establishment of self-identity that are seen as both a product of dividing the world of experience into ever smaller categories (i.e., the refinement of the ‘objective’ world) and of the subjective relationship between the individual in modern society and the world of objects.
Magnetic domain-wall velocity enhancement induced by a transverse magnetic field
Creators: name: Yang, Jusang
name: Beach, Geoffrey S. D.
name: Knutson, Carl
name: Erskine, James L.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Spin dynamics of field-driven domain walls (DWs) guided by Permalloy nanowires are studied by high-speed magneto-optic polarimetry and numerical simulations. DW velocities and spin configurations are determined as functions of longitudinal drive field, transverse bias field, and nanowire width. Nanowires having cross-sectional dimensions large enough to support vortex wall structures exhibit regions of drive-field strength (at zero bias field) that have enhanced DW velocity resulting from coupled vortex structures that suppress oscillatory motion. Factor of ten enhancements of the DW velocity are observed above the critical longitudinal drive-field (that marks the onset of oscillatory DW motion) when a transverse bias field is applied. Nanowires having smaller cross-sectional dimensions that support transverse wall structures also exhibit a region of higher mobility above the critical field, and similar transverse-field induced velocity enhancement but with a smaller enhancement factor. The bias-field enhancement of DW velocity is explained by numerical simulations of the spin distribution and dynamics within the propagating DW that reveal dynamic stabilization of coupled vortex structures and suppression of oscillatory motion in the nanowire conduit resulting in uniform DW motion at high speed.
description: 8 pages, 5 figures
Design and Description of the CMS Magnetic System Model
Creators: name: Klyukhin, Vyacheslav
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: This review describes the composition of the Compact Muon Solenoid (CMS) detector and the methodology for modelling the heterogeneous CMS magnetic system, starting with the formulation of the magnetostatics problem for modelling the magnetic flux of the CMS superconducting solenoid enclosed in a steel flux-return yoke. The review includes a section on the magnetization curves of various types of steel used in the CMS magnet yoke. The evolution of the magnetic system model over 20 years is presented in the discussion section and is well illustrated by the CMS model layouts and the magnetic flux distribution.
description: 17 pages, 9 figures, 67 references
The 3rd International Planning Competition: Results and Analysis
Creators: name: Fox, M.
name: Long, D.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: This paper reports the outcome of the third in the series of biennial international planning competitions, held in association with the International Conference on AI Planning and Scheduling (AIPS) in 2002. In addition to describing the domains, the planners and the objectives of the competition, the paper includes analysis of the results. The results are analysed from several perspectives, in order to address the questions of comparative performance between planners, comparative difficulty of domains, the degree of agreement between planners about the relative difficulty of individual problem instances and the question of how well planners scale relative to one another over increasingly difficult problems. The paper addresses these questions through statistical analysis of the raw results of the competition, in order to determine which results can be considered to be adequately supported by the data. The paper concludes with a discussion of some challenges for the future of the competition series.
CONCEPTUAL PRINCIPLES AND MODERN METHODS OF FORMING A SYSTEM FOR ASSESSING THE QUALITY OF PERSONNEL MANAGEMENT OF CONSTRUCTION COMPANIES
Creators: name: Mykhailova, Y.
name: Valinkevych, N.
name: Kulikov О.
Publisher: name: The Scientific Heritage
Year: 2020
Subjects: quality assessment methodology
personnel assessment
construction companies
quantitative
co-combined assessment methods
enterprise.

description: Personnel management is one of the most important parts of the efficiency of the enterprise as a whole. However, there is currently no single approach to assessing such effectiveness. Assessing the quality of personnel management is one of the most important tools for forming and improving personnel strategy and policy in the enterprise, which allows to determine the state of the personnel management system based on analysis of all its components, identify problems and provide recommendations for improving the quality of personnel management. The issues of methods of assessing the quality of personnel are considered, a classification of the main approaches to assessing the quality of personnel in foreign and domestic scientific literature is given. Determining the effectiveness of personnel management, as a multifaceted and extremely complex process, is characterized by specific properties and patterns, should be systemic in nature and complete on the basis of a comprehensive assessment of personnel problems, introduction of new and improvement of existing mechanisms for assessing the quality of personnel management. Summarizing the various indicators and approaches to the analysis of the effectiveness of the personnel management system, the article identifies the combined indicators: the effectiveness and quality of personnel, the effectiveness of the enterprise.
Mini-BESTest_Czech version.pdf
Creators: name: Michalčinová, Klaudia
name: Kejhová, Eva
name: Jeníček, Jakub
name: Slámová, Adéla
name: Tichá, Monika
name: Kuželková, Anna
name: Jakovcová, Karolína
Publisher: name: figshare
Year: 2021
Subjects: subject: 110317 Physiotherapy
subject: FOS: Clinical medicine

description: The item consists of Czech version of the Mini-BESTest test, including instructions for its administration.
Radial quasilinear elliptic problems with singular or vanishing potentials
Creators: name: Badiale, Marino
name: Guida, Michela
name: Rolando, Sergio
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: Primary 46E35, Secondary 46E30, 35J92, 35J20

description: In this paper we continue the work that we began in arXiv:1912.07537. Given $1 0$, and a continuous function $A(r) >0\ (r>0)$, we consider the quasilinear elliptic equation \[ -\mathrm{div}\left(A(|x| )|\nabla u|^{p-2} \nabla u\right) +V\left( \left| x\right| \right) |u|^{p-2}u= K(|x|) f(u) \quad \text{in }\mathbb{R}^{N}, \] where all the potentials $A,V,K$ may be singular or vanishing, at the origin or at infinity. We find existence of nonnegative solutions by the application of variational methods, for which we need to study the compactness of the embedding of a suitable function space $X$ into the sum of Lebesgue spaces $L_{K}^{q_{1}}+L_{K}^{q_{2}}$. The nonlinearity has a double-power super $p$-linear behavior, as $f(t)= \min \left\{ t^{q_1 -1}, t^{q_2 -1} \right\}$ with $q_1,q_2>p$ (recovering the power case if $q_1=q_2$). With respect to \cite{AVK_I}, in the present paper we assume some more hypotheses on $V$, and we are able to enlarge the set of values $q_1 , q_2$ for which we get existence results.
description: arXiv admin note: text overlap with arXiv:1510.03879, arXiv:1912.07537, arXiv:1403.3803
Practical Bayesian optimization with application to tuning machine learning algorithms
Creators: name: Shahriari, Bobak
Publisher: name: University of British Columbia
Year: 2016

description: Bayesian optimization has recently emerged in the machine learning community as a very effective automatic alternative to the tedious task of hand-tuning algorithm hyperparameters. Although it is a relatively new aspect of machine learning, it has known roots in the Bayesian experimental design (Lindley, 1956; Chaloner and Verdinelli, 1995), the design and analysis of computer experiments (DACE; Sacks et al., 1989), Kriging (Krige, 1951), and multi-armed bandits (Gittins, 1979). In this thesis, we motivate and introduce the model-based optimization framework and provide some historical context to the technique that dates back as far as 1933 with application to clinical drug trials (Thompson, 1933). Contributions of this work include a Bayesian gap-based exploration policy, inspired by Gabillon et al. (2012); a principled information-theoretic portfolio strategy, out-performing the portfolio of Hoffman et al. (2011); and a general practical technique circumventing the need for an initial bounding box. These various works each address existing practical challenges in the way of more widespread adoption of probabilistic model-based optimization techniques. Finally, we conclude this thesis with important directions for future research, emphasizing scalability and computational feasibility of the approach as a general purpose optimizer.
FEATURES OF CLASSIFICATION AND ACCOUNTING OF FINANCIAL INVESTMENTS
Creators: name: Koval, N.
Publisher: name: The Scientific Heritage
Year: 2020
Subjects: accounting
financial resources
financial investments
principles of investment resources
normatively regulated accounting policy.

description: In the article basic component classifications are certain and to the account of financial investments of activity of agrarian enterprises that will assist the improvement of their vital functions. The financial investing is the process of providing of increase of capital of investor due to operations security-related and corporate laws different from securities. The accounting classification of financial investments is systematized and the need for its improvement by supplementing investment objects in accordance with generally accepted groups of securities is determined. The main classification features of investments, storage of investment and financial activities of agricultural enterprises for the purposes of accounting are determined. The results of the study are the basis for further development of theoretical and methodological principles of accounting for investment activities of the enterprise, taking into account its modern features.
Mini-BESTest_Czech version.pdf
Creators: name: Michalčinová, Klaudia
name: Kejhová, Eva
name: Jeníček, Jakub
name: Slámová, Adéla
name: Tichá, Monika
name: Kuželková, Anna
Publisher: name: figshare
Year: 2021
Subjects: subject: 110317 Physiotherapy
subject: FOS: Clinical medicine

description: The item consists of Czech version of the Mini-BESTest test, including instructions for its administration.
A Method to Predict Semantic Relations on Artificial Intelligence Papers
Creators: name: Andrades, Francisco
name: Ñanculef, Ricardo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Social and Information Networks (cs.SI)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Predicting the emergence of links in large evolving networks is a difficult task with many practical applications. Recently, the Science4cast competition has illustrated this challenge presenting a network of 64.000 AI concepts and asking the participants to predict which topics are going to be researched together in the future. In this paper, we present a solution to this problem based on a new family of deep learning approaches, namely Graph Neural Networks. The results of the challenge show that our solution is competitive even if we had to impose severe restrictions to obtain a computationally efficient and parsimonious model: ignoring the intrinsic dynamics of the graph and using only a small subset of the nodes surrounding a target link. Preliminary experiments presented in this paper suggest the model is learning two related, but different patterns: the absorption of a node by a sub-graph and union of more dense sub-graphs. The model seems to excel at recognizing the first type of pattern.
description: 2021 IEEE International Conference on Big Data (Big Data)
MODELING OF DEPENDENCE OF FINANCIAL AND ECONOMIC RESULTS OF PROCESSING ENTERPRISES OF VINNITSA REGION
Creators: name: Kaletnik, G.
name: Hontaruk Ya.
Publisher: name: The Scientific Heritage
Year: 2020
Subjects: restructuring
factors
agro-industrial processing industry
model
profitability
costs
algorithm.

description: Approaches to structural changes at industrial enterprises of agrarian and industrial complex are investigated. Approaches to the development of a modeling algorithm at the enterprises of the agro-industrial complex industry are analyzed. A set of factors that directly or indirectly affect the effectiveness of the restructuring of enterprises in the processing industries of agriculture. The most significant factors that have an impact on the restructuring measures are identified. A factor analysis of the impact on the formation of profits of the leading processing enterprises in the region (LLC "Litynsky Dairy Plant" and PJSC "Vinnytsia Oil and Fat Plant"). The concept of development of enterprises of processing branches of agrarian and industrial complex is developed, which should be based on the accurately defined and formulated purpose of restructuring of the enterprise and influence of separate factors on financial and economic indicators of activity.
Optical performance of the JWST MIRI flight model: characterization of the point spread function at high-resolution
Creators: name: Guillard, P.
name: Rodet, T.
name: Ronayette, S.
name: Amiaux, J.
name: Abergel, A.
name: Moreau, V.
name: Augueres, J. L.
name: Bensalem, A.
name: Orduna, T.
name: Nehmé, C.
name: Belu, A. R.
name: Pantin, E.
name: Lagage, P. O
name: Longval, Y.
name: Glasse, A. C. H.
name: Bouchet, P.
name: Cavarroc, C.
name: Dubreuil, D.
name: Kendrew, S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The Mid Infra Red Instrument (MIRI) is one of the four instruments onboard the James Webb Space Telescope (JWST), providing imaging, coronagraphy and spectroscopy over the 5-28 microns band. To verify the optical performance of the instrument, extensive tests were performed at CEA on the flight model (FM) of the Mid-InfraRed IMager (MIRIM) at cryogenic temperatures and in the infrared. This paper reports on the point spread function (PSF) measurements at 5.6 microns, the shortest operating wavelength for imaging. At 5.6 microns the PSF is not Nyquist-sampled, so we use am original technique that combines a microscanning measurement strategy with a deconvolution algorithm to obtain an over-resolved MIRIM PSF. The microscanning consists in a sub-pixel scan of a point source on the focal plane. A data inversion method is used to reconstruct PSF images that are over-resolved by a factor of 7 compared to the native resolution of MIRI. We show that the FWHM of the high-resolution PSFs were 5-10% wider than that obtained with Zemax simulations. The main cause was identified as an out-of-specification tilt of the M4 mirror. After correction, two additional test campaigns were carried out, and we show that the shape of the PSF is conform to expectations. The FWHM of the PSFs are 0.18-0.20 arcsec, in agreement with simulations. 56.1-59.2% of the total encircled energy (normalized to a 5 arcsec radius) is contained within the first dark Airy ring, over the whole field of view. At longer wavelengths (7.7-25.5 microns), this percentage is 57-68%. MIRIM is thus compliant with the optical quality requirements. This characterization of the MIRIM PSF, as well as the deconvolution method presented here, are of particular importance, not only for the verification of the optical quality and the MIRI calibration, but also for scientific applications.
description: 13 pages, submitted to SPIE Proceedings vol. 7731, Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave
Spatiotemporal evolution of emission and absorption signatures in a laser-produced plasma
Creators: name: Harilal, Sivanandan S.
name: Kautz, Elizabeth J.
name: Phillips, Mark C.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We report spatiotemporal evolution of emission and absorption signatures of Al species in a nanosecond (ns) laser-produced plasma (LPP). The plasmas were generated from an Inconel target, which contained $\sim $ 0.4 wt.% Al, using 1064 nm, ~ 6 ns full width half maximum pulses from an Nd:YAG laser at an Ar cover gas pressure of ~ 34 Torr. The temporal distributions of the Al I (394.4 nm) transition were collected from various spatial points within the plasma employing time-of-flight (TOF) emission and laser absorption spectroscopy and they provide kinetics of the excited state and ground state population of the selected transition. The emission and absorption signatures showed multiple peaks in their temporal profiles, although they appeared at different spatial locations and times after the plasma onset. The absorption temporal profiles showed an early time signature representing shock wave propagation into the ambient gas. We also used emission and absorption spectral features for measuring various physical properties of the plasma. The absorption spectral profiles are utilized for measuring linewidths, column density, and kinetic temperature while emission spectra were used to measure excitation temperature. A comparison between excitation and the kinetic temperature was made at various spatial points in the plasma. Our results highlight that the TOF measurements provide a resourceful tool for showing the spatiotemporal LPP dynamics with higher spatial and temporal resolution than is possible with spectral measurements but are difficult to interpret without additional information on excitation temperatures and linewidths. The combination of absorption and emission TOF and spectral measurements thus provides a more complete picture of LPP spatiotemporal dynamics than is possible using any one technique alone.
description: 22 Figures
PECULIARITIES OF NORMATIVE REGULATION OF FORMATION AND ACCOUNTING OF EQUITY IN COMPANIES: UKRAINIAN REALITIES
Creators: name: Ishchenko Ya.
Publisher: name: The Scientific Heritage
Year: 2020
Subjects: equity
authorized capital
limited liability companies
joint stock companies
accounting policy
charter
legal regulation
accounting
reporting.

description: The publication is devoted to solving the problem of proper legal support and disclosure of information on equity transactions in the accounting system of agricultural enterprises. Based on the study of regulations, the existing approaches to defining the concept of "equity" are summarized. The changes of normative regulation of activity of limited liability companies and joint-stock companies which lead to necessity to make changes to constituent documents and internal regulations of the account are outlined. Elements of the organizational and methodological component of the accounting policy on equity are offered, which will allow to agree on the provisions of the accounting policy and constituent documents, in order to satisfy the interests of users regarding information on equity. An indicative section of the order on accounting policy has been developed, which will regulate the accounting of equity in companies
Wellbeing of Children across the Primary-Secondary School Transition: a Scoping Review
Creators: name: Bochane, Margot
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Social and Behavioral Sciences
subject: Child Psychology
subject: School Psychology
subject: Education
subject: Psychology
subject: FOS: Psychology

description: This is a registration of a protocol for a scoping review to explore existing literature related to factors that play a role in the wellbeing of children 10-14 years old in the context of transition from primary to secondary school.
PERSONNEL MANAGEMENT OF A CONSTRUCTION COMPANY IN MODERN CONDITIONS
Creators: name: Novykova, I.
name: Kushyk-Strelnikov, Y.
Publisher: name: The Scientific Heritage
Year: 2020
Subjects: personnel management
construction
construction organizations
construction and installation work
personnel support for construction
the profession of a builder

description: This article discusses the features of construction that affect the process of personnel management in construction organizations. The differences in the organization of the construction process from the production process in other industries are revealed. The trends in the labor market in construction are shown. It is concluded that the personnel management system of a modern construction organization should take into account the specifics of the construction industry, its current problems and global trends in the development of approaches to personnel management.
Comparison of robust, reliability-based and non-probabilistic topology optimization under uncertain loads and stress constraints
Creators: name: da Silva, Gustavo Assis
name: Cardoso, Eduardo Lenz
name: Beck, Andre T.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: It is nowadays widely acknowledged that optimal structural design should be robust with respect to the uncertainties in loads and material parameters. However, there are several alternatives to consider such uncertainties in structural optimization problems. This paper presents a comprehensive comparison between the results of three different approaches to topology optimization under uncertain loading, considering stress constraints: 1) the robust formulation, which requires only the mean and standard deviation of stresses at each element; 2) the reliability-based formulation, which imposes a reliability constraint on computed stresses; 3) the non-probabilistic formulation, which considers a worst-case scenario for the stresses caused by uncertain loads. The information required by each method, regarding the uncertain loads, and the uncertainty propagation approach used in each case is quite different. The robust formulation requires only mean and standard deviation of uncertain loads; stresses are computed via a first-order perturbation approach. The reliability-based formulation requires full probability distributions of random loads, reliability constraints are computed via a first-order performance measure approach. The non-probabilistic formulation is applicable for bounded uncertain loads; only lower and upper bounds are used, and worst-case stresses are computed via a nested optimization with anti-optimization. The three approaches are quite different in the handling of uncertainties; however, the basic topology optimization framework is the same: the traditional density approach is employed for material parameterization, while the augmented Lagrangian method is employed to solve the resulting problem, in order to handle the large number of stress constraints.
description: 16 pages, 5 figures
Decoherence of a quantum gyroscope
Creators: name: Landon-Cardinal, Olivier
name: MacKenzie, Richard
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the behavior of a quantum gyroscope, that is, a quantum system which singles out a direction in space in order to measure certain properties of incoming particles such as the orientation of their spins. We show that repeated Heisenberg interactions of the gyroscope with several incoming spin-1/2 particles provides a simple model of decoherence which exhibits both relaxation and dephasing. Focusing on the semiclassical limit, we derive equations of motion for the evolution of a coherent state and investigate the evolution of a superposition of such states. While a coherent state evolves on a timescale given by the classical ratio of the angular momentum of the gyroscope to that of the incoming particles, dephasing acts on a much shorter timescale that depends only on the angular difference of the states in the superposition.
description: 7 pages, 5 figures
TOOLS OF STATE REGULATION OF ECONOMIC DEVELOPMENT OF AGRICULTURAL BUSINESS ENTITIES
Creators: name: Kaletnik, G.
name: Okhota Yu.
Publisher: name: The Scientific Heritage
Year: 2020
Subjects: tools of state regulation
state support
subsidies
direct methods
indirect methods
agriculture
gross domestic product.

description: The article examines and characterizes the tools of state regulation of economic development of agribusiness in Ukraine. The significance of agriculture in Ukraine’s economy is determined through the analysis of the share of agriculture in the gross domestic product of 2007-2019. The system of state support of agriculture in Ukraine is grouped and the methods of its implementation are considered. The dynamics of expenditures of the State Budget of Ukraine on the state support of the agrarian sector over 2012-2020 is analyzed. The adequacy of the amount of state support to the agrarian sector of Ukraine is determined due to a comparative analysis of its amount in Ukraine and other countries. There have been proposed the measures, which should be implemented at the state level in order to reorient the tools of state regulation for support of structures that are mainly interested in the sustainable development of the agrarian sector.
Novel approaches for TB vaccine and treatments : improving BCG vaccine and ‎identification of a potential new drug target
Creators: name: Liao, Ting Yu Angela
Publisher: name: University of British Columbia
Year: 2016

description: Current strategies of TB control include vaccination as a preventive approach and drug-based treatment as post-exposure therapy. In my PhD studies, I aimed to contribute in both directions: improving the current BCG vaccine and identifying and characterizing novel TB drug targets. I developed a novel non-genetic approach for the rapid display of exogenous proteins on mycobacterial cell surfaces as an alternative to DNA-based gene expression for upgrading BCG. A monomeric form of avidin that had the feature of reversible binding to biotin was chosen to generate avidin fusion proteins for surface decoration of biotinylated BCG. Avidin-tagged proteins bound to BCG surface reproducibly and stably with no effect on BCG growth. Thereafter, chimeric proteins corresponding to ovalbumin (OVA) and the M. tuberculosis (M.tb) specific ESAT6 antigen were generated and tested for their immunogenicity in vaccinated mice. BCG-OVA induced an immune response similar to that induced by BCG expressing the same surrogate antigen genetically. Furthermore, BCG decorated with ESAT6 successfully induced the expansion of specific T cell responses in vivo. This technology, therefore, can effectively replace traditional transformation of BCG with antigen-encoding genes and provide a novel platform for rapid evaluation of immunogenic proteins with broad applications in vaccine development. Mycobacterial lipoamide dehydrogenase (LpdC) is involved in the aberrant and prolonged retention of host protein coronin-1A (COR1A) on the phagosomal membrane, which contributes significantly to the inhibition of phagosome maturation, leading to intracellular persistence of M.tb. I constructed and utilized recombinant LpdC protein and ΔLpdC M.tb mutant to characterize LpdC and investigate potential mechanisms of LpdC-COR1A retention. ΔLpdC M.tb showed a decreased growth rate in standard media, induced phagolysosome fusion, and survived less than wild-type M.tb inside macrophages. I also found that LpdC interacted with a series of phosphoinositides (PIPs) and surprisingly aided in the induction of ROS production, which added to the multi-functionality of LpdC. From these studies, I have further characterized mycobacterial LpdC with regard to its role in M.tb persistence and paved ways for further investigations into LpdC’s potential as a novel drug target candidate.
OpenCitations - what does the future hold?
Creators: name: Shotton, David
name: Peroni, Silvio
name: Di Giambattista, Chiara
Publisher: name: Zenodo
Year: 2021
Subjects: OpenCitations
I4OC
Open Science
Principles of Open Scholarly Infrastructure
open citations
COCI
SCOSS

description: This poster was presented by David Shotton during the "Poster Lightning Talks Session 3" as part of the OASPA 2021 Online Conference on Open Access Scholarly Publishing. "OpenCitations - What does the future hold?" is a reflection on OpenCitations' values, data, services, achievements so far, and plans for the future.
Role of non-collinear magnetization: from ferromagnetic nano wires to quantum rings
Creators: name: Sedlmayr, Nicholas
name: Dugaev, Vitalii
name: Berakdar, Jamal
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We consider interaction effects related to a nonuniform magnetization in ferromagnetic nanowires and their possible generalization to nanorings. First we show that the electric current in a ferromagnetic nanowire with more than one domain wall induces an exchange coupling between the walls mediated by the spin-dependent interference of scattered carriers. This interaction reveals a complex behavior as a function of mutual orientations and separation of the domain walls, thus affecting the domain wall dynamics. Then we consider how the theory should be modified in the case of a magnetized quantum ring. In this case the situation is more complicated because the vortex and onion magnetization states in the ring are not truly ferromagnetic.
description: 7 pages, published in pss(b)
Impacts of Hardware Impairments on Mutualistic Cooperative Ambient Backscatter Communications
Creators: name: Ye, Yinghui
name: Shi, Liqin
name: Chu, Xiaoli
name: Lu, Guangyue
name: Sun, Sumei
Publisher: name: arXiv
Year: 2022
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In mutualistic cooperative ambient backscatter communications (AmBC), Internet-of-Things (IoT) device sends its information to a desired receiver by modulating and backscattering the primary signal, while providing beneficial multipath diversity to the primary receiver in return, thus forming a mutualism relationship between the AmBC and primary links. We note that the hardware impairments (HIs), which are unavoidable in practical systems and may significantly affect the transmission rates of the primary and AmBC links and their mutualism relationships, have been largely ignored in the study of mutualistic cooperative AmBC networks. In this paper, we consider a mutualistic cooperative AmBC network under HIs, and study the impacts of HIs on the achievable rates of the primary link and the AmBC link. In particular, we theoretically prove that although HIs degrades the rate of each link, the mutualism relationship between the AmBC and primary links is maintained, i.e., the rate of the primary link in the mutualistic cooperative AmBC network is still higher than that without the AmBC link. The closed-form rate expressions of both the AmBC and primary links are derived. Computer simulations are provided to validate our theoretical analysis.
description: This paper has been accepted by the IEEE ICC 2022
АКТУАЛЬНЫЕ ПРОБЛЕМЫ КРЕДИТОВАНИЯ СУБЪЕКТОВ МАЛОГО И СРЕДНЕГО БИЗНЕСА
Creators: name: Окорокова О.А.
name: Саранцева Д.Е.
name: Гусева Ю.П.
Publisher: name: The Scientific Heritage
Year: 2020
Subjects: кредитование
малый и средний бизнес
экономический кризис
экономическая безопасность.
lending
small and medium-sized businesses
economic crisis
economic security

description: В работе проанализирована динамика показателей кредитования субъектов малого и среднего бизнеса. Определены актуальные проблемы, препятствующие эффективному кредитованию субъектов МСП. В результате проведенного исследования авторами предложены пути решения, реализация которых будет способствовать повышению эффективности кредитования субъектов МСП.
description: The paper analyzes the dynamics of lending indicators for small and medium-sized businesses. The current problems that hinder effective lending to SMEs are identified. As a result of the research, the authors suggest solutions that will help improve the efficiency of lending to SMEs.
Interference, Cooperation and Connectivity - A Degrees of Freedom Perspective
Creators: name: Wang, Chenwei
name: Jafar, Syed A.
name: Shamai, Shlomo
name: Wigger, Michele
Publisher: name: arXiv
Year: 2011
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We explore the interplay between interference, cooperation and connectivity in heterogeneous wireless interference networks. Specifically, we consider a 4-user locally-connected interference network with pairwise clustered decoding and show that its degrees of freedom (DoF) are bounded above by 12/5. Interestingly, when compared to the corresponding fully connected setting which is known to have 8/3 DoF, the locally connected network is only missing interference-carrying links, but still has lower DoF, i.e., eliminating these interference-carrying links reduces the DoF. The 12/5 DoF outer bound is obtained through a novel approach that translates insights from interference alignment over linear vector spaces into corresponding sub-modularity relationships between entropy functions.
description: Submitted to 2011 IEEE International Symposium on Information Theory (ISIT)
The role of gender norms in adolescent boys' navigation of romantic relationships
Creators: name: Dmytro, Dana
Publisher: name: University of British Columbia
Year: 2016

description: Focus group discussions were analyzed to gain a better understanding of adolescent boys’ psychosocial processes of navigating their romantic relationships. In particular, the role of gender norms in boys’ navigation of romantic relationships was explored. Using grounded theory methodology, focused discussions were held with 23 boys in Grades 9 through 12 at high schools in an urban school district. The central phenomenon identified to be occurring during these participants’ relationship navigation was getting experienced in dating. Six other categories were identified: initiating dating relationships, benefiting/”gaining” from relationships, communication, managing relationship issues, relationship breakdown, and disengaging from dating. Contextual conditions were also found to be influencing participants’ relationship navigation: struggling to be confident, social/digital media culture, peers’ perceptions, parental expectations, multicultural context, female gender stereotypes, and finally, masculine gender norms. The significance of the findings in relation to boys’ relationship navigation, social and emotional learning, the development of psycho-educational interventions, and the implications for school psychologists are discussed.
Découverte d'un nouvel hybride d'Ophrys en Provence
Creators: name: Romieg Soca, Romieg
Publisher: name: Zenodo
Year: 1999
Subjects: Ophrys

description: Perrin J.F. & Soca R., 1999. Découverte d'un nouvel hybride d'Ophrys en Provence. L'Orchidophile 30(138): 175-177.
A hybridization of feedforward neural network and differential evolutionto forecast fertilizer consumption emphasizingon selecting optimal architecture
Creators: name: Thoranin Sujjaviriyasup
Publisher: name: Research and Development Office, Prince of Songkla University
Year: 2021
Subjects: time series analysis
combined model
agro - industry
parameter selection
optimization technique

description: Songklanakarin Journal of Science and Technology (SJST), 43, 4, 1160-1168
Characteristics of Learning Management System (LMS) and its Role in Education of Electronics
Creators: name: Milad, Forouzesh; Milad, Darvish
Publisher: name: Editura Universitara
Year: 2012
Subjects: subject: 0 Social sciences
subject: 37 Education
subject: 371 Instructional design
subject: 004:37 Elearning

description: The present article will study the characteristics of Learning Management System (LMS) and its role in education of electronics. For this purpose, we point to an introduction of a history, related researches and a specific definition of LMS. We continue with distinguishing LMS from similar terms such as Content Management System (CMS) and Learning Content Management System (LCMS) that, in many cases, are being confused with. Meanwhile, we will refer to a brief elaboration of definitions of  the terms, explain the role of LMS in education and also clarify the function of LMS as well. Finally, in  addition to an explanation of the contemporary usage and current features of the present LMS, we sum up the topic by determining the processes and giving recommendations and advices for future researches.
A dusty veil shading Betelgeuse during its Great Dimming
Creators: name: Montargès, M.
name: Cannon, E.
name: Lagadec, E.
name: de Koter, A.
name: Kervella, P.
name: Sanchez-Bermudez, J.
name: Paladini, C.
name: Cantalloube, F.
name: Decin, L.
name: Scicluna, P.
name: Kravchenko, K.
name: Dupree, A. K.
name: Ridgway, S.
name: Wittkowski, M.
name: Anugu, N.
name: Norris, R.
name: Rau, G.
name: Perrin, G.
name: Chiavassa, A.
name: Kraus, S.
name: Monnier, J. D.
name: Millour, F.
name: Bouquin, J. -B. Le
name: Haubois, X.
name: Lopez, B.
name: Stee, P.
name: Danchi, W.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Red supergiants are the most common final evolutionary stage of stars that have initial masses between 8 and 35 times that of the Sun. During this stage, which lasts roughly 100,000 years1, red supergiants experience substantial mass loss. However, the mechanism for this mass loss is unknown. Mass loss may affect the evolutionary path, collapse and future supernova light curve of a red supergiant, and its ultimate fate as either a neutron star or a black hole. From November 2019 to March 2020, Betelgeuse - the second-closest red supergiant to Earth (roughly 220 parsecs, or 724 light years, away) - experienced a historic dimming of its visible brightness. Usually having an apparent magnitude between 0.1 and 1.0, its visual brightness decreased to 1.614 +/- 0.008 magnitudes around 7-13 February 2020 - an event referred to as Betelgeuse's Great Dimming. Here we report high-angular-resolution observations showing that the southern hemisphere of Betelgeuse was ten times darker than usual in the visible spectrum during its Great Dimming. Observations and modelling support a scenario in which a dust clump formed recently in the vicinity of the star, owing to a local temperature decrease in a cool patch that appeared on the photosphere. The directly imaged brightness variations of Betelgeuse evolved on a timescale of weeks. Our findings suggest that a component of mass loss from red supergiants is inhomogeneous, linked to a very contrasted and rapidly changing photosphere
One Size Fits All? Cultural Diversity Reflected in Instructional Design Models
Creators: name: Ioana, Hartescu
Publisher: name: Editura Universitara
Year: 2012
Subjects: subject: 0 Social sciences
subject: 37 Education
subject: 371 Instructional design
subject: 004:37 Elearning

description: Online learning programs have become more accessible to a wide range of learners all over the world. This raises the question whether differences between various groups are taken into consideration in the design of these programs. While new devices and technologies make learning more readily available, ignoring cultural issues can lead to a total breakdown of communication. This study investigates how issues of culture should influence instructional design of online courses.