cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Interaction between an Isotropic Nanoparticle and Drifting Electrons in a Quantum Well
Creators: name: Kochelap, V. A.
name: Kukhtaruk, S. M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A hybrid system composed of an isotropic nanoparticle and a semiconductor heterostructure with a quantum well has been considered. The nanoparticle is supposed to be polarizable in an external electric field. A theoretical model of the hybrid system is substantiated and formulated. Exact solutions of the model equations are obtained. The frequencies of charge oscillations in the hybrid system and their damping owing to the dipole--plasmon interaction are found, the damping mechanism being similar to that of Landau damping. The space-time behavior of concentration perturbations in the two-dimensional electron gas is analyzed, and the polarization oscillations of a nanoparticle are studied. The induced polarization of a nanoparticle at nonzero electron drift velocities is found to have a complicated dynamics. In particular, the polarization vector circulates along elliptic trajectories for two of three frequency dispersion branches. If the electric current flows through the quantum well due to an applied electric field, the damping of oscillations in the hybrid system is replaced by their growth in time, which corresponds to the electric instability of the system. New phenomena in hybrid systems can be used to excite the emission of nanoparticles by an electric current and to electrically stimulate the emission in the terahertz spectral range.
description: 14 pages, 12 figures
DISTANCE LEARNING: CURRENT ISSUES AND COMPARATIVE ANALYSIS ASSESSING ITS EFFECTIVENESS
Creators: name: Tikhonova, Eleonora
name: Bobylev, Evgeniy
name: Ganicheva, Irina
Publisher: name: Материалы Международного психологического форума «Ребенок в цифровом мире»
Year: 2022
Subjects: university
distance learning
legislation
education
survey among teachers and students
problems of distance learning

description: Abstract: Research question. The main qualities that aid distance learning are self-discipline, self-control and volitional regulation. An analysis of the Federal State Educational Standards of Higher education in the Russian Federation confirmed this fact, where special attention is paid to creating optimal conditions for the functioning of the digital educational environment. Based on the above, the purpose of the current study was to analyze and compare the effectiveness of various forms and methods of distance learning from the perspectives of university teachers and students; to identify the problems faced by the participants of the educational process in the context of distance learning. Research methods: theoretical methods, including the research subject analysis based on the study of psychological and pedagogic literature and normative documentation; empirical-and-quantitative research methods, namely, an anonymous survey among 546 students and 61 teachers according to the author's questionnaire. Conclusions and recommendations. The educational system of the university was insufficiently prepared for "distant learning". Insufficient technical support for students and teachers was revealed. The lack of personal contact and live communication negatively affected health and motivation among students and efficiency among teachers. The results of this research can be used for improving the system of organization and management of distance learning in higher education institutions, as well as for determining the priority areas for the retraining of teaching staff.
Symmetric and asymmetric solitons in a nonlocal nonlinear coupler
Creators: name: Shi, Xianling
name: Malomed, Boris A.
name: Ye, Fangwei
name: Chen, Xianfeng
Publisher: name: arXiv
Year: 2012
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We study effects of nonlocality of the cubic self-focusing nonlinearity on the stability and symmetry-breaking bifurcation (SBB) of solitons in the model of a planar dual-core optical waveg- uide with nonlocal (thermal) nonlinearity. In comparison with the well-known coupled systems with the local nonlinearity, the present setting is affected by the competition of different spatial scales, viz., the coupling length and correlation radius of the nonlocality, $\sqrt{d}$. By means of numer- ical methods and variational approximation (VA, which is relevant for small d), we find that, with the increase of the correlation radius, the SBB changes from subcritical into supercritical, which makes all the asymmetric solitons stable. On the other hand, the nonlocality has little influence on the stability of antisymmetric solitons. Analytical results for the SBB are also obtained (actually, for antisymmetric "accessible solitons") in the opposite limit of the ultra-nonlocal nonlinearity, using a coupler based on the Snyder-Mitchell model. The results help to grasp the general picture of the symmetry breaking in nonlocal couplers.
description: 19 pages, 3 figures, to appear in Phys. Rev. A
Pitch Angle Restrictions in Late Type Spiral Galaxies Based on Chaotic and Ordered Orbital Behavior
Creators: name: Perez-Villegas, Angeles
name: Pichardo, Barbara
name: Moreno, Edmundo
name: Peimbert, Antonio
name: Velazquez, Hector M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We built models for low bulge mass spiral galaxies (late type as defined by the Hubble classification) using a 3-D self-gravitating model for spiral arms, and analyzed the orbital dynamics as a function of pitch angle, going from 10$°$ to 60$°$. Testing undirectly orbital self-consistency, we search for the main periodic orbits and studied the density response. For pitch angles up to approximately $\sim 20°$, the response supports closely the potential permitting readily the presence of long lasting spiral structures. The density response tends to "avoid" larger pitch angles in the potential, by keeping smaller pitch angles in the corresponding response. Spiral arms with pitch angles larger than $\sim 20°$, would not be long-lasting structures but rather transient. On the other hand, from an extensive orbital study in phase space, we also find that for late type galaxies with pitch angles larger than $\sim 50°$, chaos becomes pervasive destroying the ordered phase space surrounding the main stable periodic and quasi-periodic orbits and even destroying them. This result is in good agreement with observations of late type galaxies, where the maximum observed pitch angle is $\sim 50°$.
description: ApJL accepted (12 pages, 3 figures)
Hivernant archaeology in the Cypress Hills
Creators: name: Elliott, Jack
Publisher: name: University of Calgary
Year: 1971
Subjects: subject: F 5766 E44 1971 Microfilm
subject: Cypress Hills - Antiquities

description: Bibliography: p. 154-168.
description: A re-evaluation of the archaeological reconstruction of Cabins B and E of the Kajewski Cabin Site, in view of Hivernant ethnohistory, indicates that archaeological technique and inference allow a high degree of reality in a reconstruction of material culture. It can also introduce a high degree of unreality to a reconstruction of the more complex, abstract aspects of social behavior. In effect, by the methods utilized at present, archaeological reconstruction is impossible without recourse to ethnohistoric analogy. Additionally, an avenue of protohistoric reality has been provided, between prehistory and post-White contact, which may increase the relevance of the Direct Historical Approach in Canada. An analysis of artifacts, features, and context indicates that acculturation of Indian and White traits is well represented materially in the archaeological record.
An investigation of the atherosclerosis susceptibility difference between two strains of Japanese quail based on gene expression profiling
Creators: name: Li, Xinrui
Publisher: name: University of British Columbia
Year: 2009

description: Atherosclerosis is influenced by a large number of genetic and environmental factors. There is an urgent need for more research exploring the atherogenic process, so that more effective therapeutic approaches can be devised. Japanese quail (Coturnix japonica) form very complex vascular lesions similar to those in humans. The atherosclerosis-susceptible (SUS) and resistant (RES) quail are particularly useful models. They were developed by divergent selection but there has been no genetic characterization of the strains. Genetic characterization of the differences between these two strains would not only improve the utility of this model, but also enable researchers to make more meaningful interpretation of the data generated using this model. This thesis research was conducted primarily to examine the differences between these two strains in terms of the expression of genes related to atherogenesis, but to also gain insights into the role cholesterol metabolism plays in atherosclerosis. The first study investigated the expression of cholesterol synthesis genes HMGCR, FDFT1, SQLE, DHCR7 and cholesterol transporter genes ABCG5, ABCG8 and APOA1 in the liver. The results showed that HMGCR, FDFT1 and SQLE had significantly higher expression in the RES than in SUS. RES showed significantly higher expression of ABCG8 than did SUS. RES had significantly higher expression of ABCG5 than did SUS on a regular diet. Both strains had significantly increased APOA1 expression when challenged by dietary cholesterol. These results provided evidence to support the hypothesis that the RES were more resistant to atherosclerosis partly because “they metabolized and excreted cholesterol faster than SUS”. In the second study, the cDNA-AFLP technique was used to indentify gene expression differences between the SUS and the RES quail. AFLP reactions using Mse and EcoR primer combinations on liver tissues found one out of 1150 fragments being differentially expressed in the liver while there were no strain-related differences detected in the spleen. The results support the hypothesis that the divergent selection used to develop these two strains did not drastically altered their genotype. However, it is not possible to draw definitive conclusions because the small number of primer pairs used only covered 9% of the quail genome.
Complete characterization of convergence to equilibrium for an inelastic Kac model
Creators: name: Gabetta, Ester
name: Regazzini, Eugenio
Publisher: name: arXiv
Year: 2012
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Pulvirenti and Toscani introduced an equation which extends the Kac caricature of a Maxwellian gas to inelastic particles. We show that the probability distribution, solution of the relative Cauchy problem, converges weakly to a probability distribution if and only if the symmetrized initial distribution belongs to the standard domain of attraction of a symmetric stable law, whose index $α$ is determined by the so-called degree of inelasticity, $p>0$, of the particles: $α=\frac{2}{1+p}$. This result is then used: (1) To state that the class of all stationary solutions coincides with that of all symmetric stable laws with index $α$. (2) To determine the solution of a well-known stochastic functional equation in the absence of extra-conditions usually adopted.
Cosmological CPT Violation and CMB Polarization Measurements
Creators: name: Xia, Jun-Qing
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In this paper we study the possibility of testing Charge-Parity-Time Reversal (CPT) symmetry with cosmic microwave background (CMB) experiments. We consider two kinds of Chern-Simons (CS) term, electromagnetic CS term and gravitational CS term, and study their effects on the CMB polarization power spectra in detail. By combining current CMB polarization measurements, the seven-year WMAP, BOOMERanG 2003 and BICEP observations, we obtain a tight constraint on the rotation angle $Δα=-2.28\pm1.02$ deg ($1\,σ$), indicating a $2.2\,σ$ detection of the CPT violation. Here, we particularly take the systematic errors of CMB measurements into account. After adding the QUaD polarization data, the constraint becomes $-1.34
description: 11 pages, 5 figures, 4 tables, Accepted for publication in JCAP
"DO YOUR OWN RESEARCH" AND EXPERIENCES OF CHILDREN'S PHILOSOPHIZING
Creators: name: Vasilieva, Evgeniya
Publisher: name: Материалы Международного психологического форума «Ребенок в цифровом мире»
Year: 2022
Subjects: childhood
digital space
children's philosophizing
critical thinking
philosophical reflection

description: Abstract: The author presented the risks of the digital space for the effective development and education of children based on how the saying "do your own research" has been transformed. The question of forming critical thinking, developing reflection, one’s system of values, relations with the world, without which the results of the primary message of DYOR are counterproductive, is relevant. The purpose of this work is to draw attention to the promise of psychological research into children's philosophizing as a method of self-actualization and objectification of a developing personality, which results in successful self-realization and communication of the child both in real life and digital space. For over a quarter of a century, the Russian practice of philosophizing with children has provided interesting material for scientific analysis for educators, philosophers, and psychologists. Positive personal and behavioral changes have been proved in children engaged in practical philosophizing within the framework of a philosophical club, additional developmental programs and leisure activities using the methodology of playful philosophizing. The report is illustrated with an article from the children's philosophical newspaper "Owl". It presents the effectiveness of open and creative discussion of important philosophical topics by children for constructive interaction.
Strong Variable Ultraviolet Emission from Y Gem: Accretion Activity in an AGB Star with a Binary Companion?
Creators: name: Sahai, Raghvendra
name: Neill, James D.
name: de Paz, Armando Gil
name: Contreras, Carmen Sánchez
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Binarity is believed to dramatically affect the history and geometry of mass loss in AGB and post-AGB stars, but observational evidence of binarity is sorely lacking. As part of a project to look for hot binary companions to cool AGB stars using the GALEX archive, we have discovered a late-M star, Y Gem, to be a source of strong and variable UV emission. Y Gem is a prime example of the success of our technique of UV imaging of AGB stars in order to search for binary companions. Y Gem's large and variable UV flux makes it one of the most prominent examples of a late AGB star with a mass accreting binary companion. The UV emission is most likely due to emission associated with accretion activity and a disk around a main-sequence companion star. The physical mechanism generating the UV emission is extremely energetic, with an integrated luminosity of a few L(sun) at its peak. We also find weak CO J=2-1 emission from Y Gem with a very narrow line profile (FWHM of 3.4 km/s). Such a narrow line is unlikely to arise in an outflow, and is consistent with emission from an orbiting, molecular reservoir of radius 300 AU. Y Gem may be the progenitor of the class of post-AGB stars which are binaries and possess disks but no outflows.
description: 2 figures (Fig. 1 in color)
Über ein spezielles Quadraturverfahren zur numerischen Behandlung Fredholmscher Integralgleichungen periodischer Funktionen
Creators: name: Collatz, Günter
Publisher: name: TUHH Universitätsbibliothek
Year: 1961
Subjects: subject: Fredholmsche Integralgleichung
classificationCode: 52.00
subject: Maschinenbau, Energietechnik, Fertigungstechnik: Allgemeines

description: Über ein spezielles Quadraturverfahren zur numerischen Behandlung Fredholmscher Integralgleichungen periodischer Funktionen
Coherent control of collective atom phase for ultralong, inversion-free photon echoes
Creators: name: Ham, B. S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: To overcome fundamental limitations of the πoptical pulse-induced population inversion and optical decay-caused short storage time in conventional photon echoes, a coherent control of collective atoms is studied for inversion-free, optical decay-halted photon echoes, where the constraint of photon storage time is now replaced by a spin population decay process. Using phase-controlled double rephasing, an inversion-free photon echo scheme is obtained, where no spontaneous or stimulated emission-driven quantum noise exists. Thus, the present method can be applied for ultralong quantum memories in quantum repeaters for long-distance quantum communications.
description: 4 pages, 4 figures
The Efficacy of the Alberta rent collection system in the Utikuma Lake field
Creators: name: Godfrey, Eldon Charles
Publisher: name: University of Calgary
Year: 1975
Subjects: subject: HD 9574 C33 G62 1975 Microfiche
subject: Petroleum - Taxation - Alberta
subject: Petroleum industry and trade - Alberta
subject: Petroleum industry and trade - Costs

description: Bibliography: p. 89-91.
Analogy perception applied to seven tests of word comprehension
Creators: name: Turney, Peter D.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences
subject: H.3.1; I.2.6; I.2.7

description: It has been argued that analogy is the core of cognition. In AI research, algorithms for analogy are often limited by the need for hand-coded high-level representations as input. An alternative approach is to use high-level perception, in which high-level representations are automatically generated from raw data. Analogy perception is the process of recognizing analogies using high-level perception. We present PairClass, an algorithm for analogy perception that recognizes lexical proportional analogies using representations that are automatically generated from a large corpus of raw textual data. A proportional analogy is an analogy of the form A:B::C:D, meaning "A is to B as C is to D". A lexical proportional analogy is a proportional analogy with words, such as carpenter:wood::mason:stone. PairClass represents the semantic relations between two words using a high-dimensional feature vector, in which the elements are based on frequencies of patterns in the corpus. PairClass recognizes analogies by applying standard supervised machine learning techniques to the feature vectors. We show how seven different tests of word comprehension can be framed as problems of analogy perception and we then apply PairClass to the seven resulting sets of analogy perception problems. We achieve competitive results on all seven tests. This is the first time a uniform approach has handled such a range of tests of word comprehension.
description: related work available at http://purl.org/peter.turney/
Electric breakdown effect in the current-voltage characteristics of amorphous indium oxide thin films near the superconductor-insulator transition
Creators: name: Cohen, O.
name: Ovadia, M.
name: Shahar, D.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Current-voltage characteristics in the insulator bordering superconductivity in disordered thin films exhibit current jumps of several orders of magnitude due to the development of a thermally bistable electronic state at very low temperatures. In this high-resolution study we find that the jumps can be composed of many (up to 100) smaller jumps that appear to be random. This indicates that inhomogeneity develops near the transition to the insulator and that the current breakdown proceed via percolative paths spanning from one electrode to the other.
description: 5 pages, 4 figures
EDUCATORS IN THE DIGITAL EDUCATIONAL SPACE: RESOURCES AND RISKS
Creators: name: Mitina, Larisa
Publisher: name: Материалы Международного психологического форума «Ребенок в цифровом мире»
Year: 2022
Subjects: concept of personal and professional development of a teacher
alternative models of professionalization
resource and risk-bearing strategies
technological model
digital educational space

description: Abstract: Within the professional development of a teacher's personality (Mitin), two alternative models have been identified: professional development and adaptive functioning. It has been shown that the model of professional development characterizes the constructive path of a teacher, the path of creation, building up their creative potential. In this theoretical and empirical study, the task was to determine the psychological resources and risks of effective work of teachers of different professionalization models in the digital educational space. With the help of a specially developed methodological program, it has been experimentally proven that the professional development model characterizes the resource strategy of a teacher's professional life in the digital space, including the actualization of the following: personal resources (pedagogical orientation, pedagogical flexibility, pedagogical competence, self-awareness); reflexive resources that reveal themselves in empirical indicators of semantic and regulatory levels; behavioral resources (polished behavior, optimal level of risk readiness, inclusion in the polysubject community). The adaptive functioning model defines a risk-bearing strategy of teacher professionalization in the context of digital transformations. It reflects unformed, undeveloped personal and behavioral characteristics regarding subject orientation, emotional, behavioral, intellectual rigidity, activity and communicative incompetence, unstructured self-awareness, pathogenic levels of reflexive resource, rigid professional role behavior, intergenerational gap of value orientations and time prospects, etc. Theoretically and empirically, a complex set of psychological conditions of professional development of the individual has been identified. This can determine the actualization of the teacher's resource capabilities and the transformation of risks into a development resource during the digitalization of education. The following groups of conditions can be distinguished as the most important components of this complex: intrapsychological, interpsychological, inter-intrapsychological. A new technological solution for the constructive change of teacher behavior is proposed, which allows transforming the adaptive behavior of the teacher, directing him to creative self-realization in the profession. Thus, the technological model makes it possible to transform contradictions 11 and risks into a resource for personal and professional development of teachers in the digital educational space.
INFLUENCE OF SOIL PHYSICO-CHEMICAL PARAMETERS ON NEMATODE COMMUNITIES IN BANANA-Grevillea robusta AGROFORESTRY SYSTEMS IN KIRINYAGA, CENTRAL KENYA
Creators: name: Muyisa, Musongora Kambale
Publisher: name: Zenodo
Year: 2023
Subjects: Banana, Nematode, Agroforestry system, Soil physico-chemical properties

description: This is an MSc Thesis with original data
FACTORS THAT FORM ADDICTION TO ONLINE GAMES
Creators: name: Denisov, Aleksandr
Publisher: name: Материалы Международного психологического форума «Ребенок в цифровом мире»
Year: 2022
Subjects: addiction
online games
Internet

description: Abstract: Due to the spread of pathological phenomena associated with various aspects of the use of the digital environment and, in particular, computer games, the category "gaming disorder" was included in 18 ICD 11. The aim of our study was to identify and describe the factors influencing the problematic use of the internet and online games. The research results made it possible to single out two groups of factors. The first group of factors was related to the structure of game activity proposed by developers, including the plot, game goals and means to achieve them, options for interacting with other people and game characters, the design of these elements, etc. The creators of online games purposefully apply the methods of addiction formation, using the system of control and management of behavior due to certain incentives and the reward system developed by B. Skinner. The second group is personal factors associated with the implementation of various needs and values within the gaming activity. The main psychological factors contributing to involvement in the game are as follows: formation of alternative goals; structuring time; receiving reinforcements; interpersonal in-game interaction and support from the gaming community; the illusion of personal growth. The main negative result of the spread of online games is connected, in our opinion, to the formation of a cycle of predictable behavior that satisfies certain needs and creates a structure for the realization of values. Though provided with the appearance of purposefulness and a sense of self-realization during play, the player is more likely to experience an existential crisis in later periods of life.
A 3D joint interpretation of magnetotelluric and seismic tomographic models: the case of the volcanic island of Tenerife
Creators: name: García-Yeguas, A.
name: Ledo, J.
name: Piña-Varas, P.
name: Prudencio, J.
name: Queralt, P.
name: Marcuello, A.
name: Ibañez, J. M.
name: Benjumea, B.
name: Sánchez-Alzola, A.
name: Pérez, N.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: In this work we have done a 3D joint interpretation of magnetotelluric and seismic tomography models. Previously we have described different techniques to infer the inner structure of the Earth. We have focused on volcanic regions, specifically on Tenerife Island volcano (Canary Islands, Spain). In this area, magnetotelluric and seismic tomography studies have been done separately. The novelty of the present work is the combination of both techniques in Tenerife Island. For this aim we have applied Fuzzy Clusters Method at different depths obtaining several clusters or classes. From the results, a geothermal system has been inferred below Teide volcano, in the center of Tenerife Island. An edifice hydrothermally altered and full of fluids is situated below Teide, ending at 600 m below sea level. From this depth the resistivity and VP values increase downwards. We also observe a clay cap structure, a typical feature in geothermal systems related with low resistivity and low VP values.
description: Preprint of the published paper without figures
FEATURES OF EMOTIONAL INTELLIGENCE OF ADOLESCENTS WITH DIFFERENT LEVELS OF INTERNET ADDICTION
Creators: name: Lebedenko, Olga
Publisher: name: Материалы Международного психологического форума «Ребенок в цифровом мире»
Year: 2022
Subjects: teenagers
internet addiction
emotional intelligence

description: Abstract: The relevance of the study of the features of emotional intelligence of adolescents with internet addiction is due to the widespread increase in internet use. Due to age characteristics, adolescence is the most dangerous period. The emotional sphere of teenagers suffers the most from excessive use of the internet, when natural communication is replaced by communication in the virtual world. The purpose of the current study was to analyze the assumptions about the existence of differences in the indicators of emotional intelligence in adolescents with different levels of internet addiction, as well as the relationship between the level of internet addiction and the emotional intelligence of adolescents. Research methods: "Internet addiction test" (K. Young, adapted by V.A. Loskutova); emotional intelligence questionnaire "EmIn" (D.V. Lyusin); Spearman correlation analysis; H-Kruskal-Wallis criterion. The study involved 91 adolescents aged 14-15 years (47 boys, 44 girls) from MAOU "School No. 96 Eureka-Development named after M.V. Nagibin", Rostov-on-Don. The main results of the study: adolescents with a high level of internet addiction had a low level of emotional intelligence (66.7%); adolescents with an average level of internet addiction had an average level of emotional intelligence (56%); adolescents with a low level of internet addiction had an average level of general emotional intelligence (46%). Statistically significant differences in all scales of emotional intelligence have been proven and significant moderate negative correlations between the scales "Level of Internet addiction" and the scale "intrapersonal emotional intelligence", "interpersonal emotional intelligence", "understanding of emotions", "general level of emotional intelligence" have been revealed. Thus, our assumptions are supported. Conclusion. The results of the study will be useful for psychologists and educators to develop an individual program of psychological and pedagogical support for adolescents with internet addiction and a low level of emotional intelligence.
New remarks on the Cosmological Argument
Creators: name: Romero, Gustavo E.
name: Pérez, Daniela
Publisher: name: arXiv
Year: 2012
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a formal analysis of the Cosmological Argument in its two main forms: that due to Aquinas, and the revised version of the Kalam Cosmological Argument more recently advocated by William Lane Craig. We formulate these two arguments in such a way that each conclusion follows in first-order logic from the corresponding assumptions. Our analysis shows that the conclusion which follows for Aquinas is considerably weaker than what his aims demand. With formalizations that are logically valid in hand, we reinterpret the natural language versions of the premises and conclusions in terms of concepts of causality consistent with (and used in) recent work in cosmology done by physicists. In brief: the Kalam argument commits the fallacy of equivocation in a way that seems beyond repair; two of the premises adopted by Aquinas seem dubious when the terms `cause' and `causality' are interpreted in the context of contemporary empirical science. Thus, while there are no problems with whether the conclusions follow logically from their assumptions, the Kalam argument is not viable, and the Aquinas argument does not imply a caused origination of the universe. The assumptions of the latter are at best less than obvious relative to recent work in the sciences. We conclude with mention of a new argument that makes some positive modifications to an alternative variation on Aquinas by Le Poidevin, which nonetheless seems rather weak.
description: 12 pages, accepted for publication in International Journal for Philosophy of Religion
Oil supply - a 'play' orientated model
Creators: name: Foat, Kenneth D.
Publisher: name: University of Calgary
Year: 1979
Subjects: subject: HD 9574 C33 A534 1979 Microfiche
subject: Petroleum industry and trade - Alberta - Mathematical models
subject: Power resources - Alberta - Mathematical models
subject: Petroleum - Alberta - Mathematical models

description: Bibliography: p. 104-107.
Representing partition : anxious witnessing and trauma in India and the former Yugoslavia
Creators: name: Tomsky, Teresa Maria
Publisher: name: University of British Columbia
Year: 2009

description: “Representing Partition,” a comparative study on state division in India and the former Yugoslavia, investigates the way partition literatures, that body of texts covering the violent impact of state-partitioning, register their anxieties in a bid to alter political landscapes. The thesis argues that traumatic affects play a critical role in initiating an antipartitionist consciousness, a vital awareness which is key to the imagining, transformation, and enabling of political communities. My focus on different affects – including anxiety, melancholia, and nostalgia – and their ability to fuel forms of communal solidarity extends current work by postcolonial scholars. “Representing Partition” breaks with the theoretical focus on the nation-state by exploring how partition functions materially as well as symbolically in the generation of new political identities, at the levels of the individual, the regional, the diasporic, and in the creation of new institutions. In representing partition’s traumas, writers seek to perturb and provoke their audience, with a view to reshaping the subjectivities of the reading classes. In four chapters, I examine the way literary narratives insistently return to partition as a site of multiple traumas and suggest new modes of commemoration, that are linked to political praxis. In naming partition’s heterogeneous traumatic effects, such discourses present an alternative to the ethno-national rhetoric of independence proclaimed by the post-partitioned state and gesture towards the formation of future communities. Chapter One analyses the important role of cosmopolitanism and affect in galvanising a form of commemorative ethics that responds to communal, class, and caste violence in novels by diasporic Indian writer Amitav Ghosh. Chapter Two examines the genre of the Indian partition anthology as a vehicle for articulating and, ultimately, institutionalising various collective traumas engendered by partition. Chapter Three concerns questions of recovery, retribution, and restitution as it investigates the break-up of Yugoslavia and its repercussions on self-avowed and traumatised Yugoslavs in the novels of Dubravka Ugresic. Chapter Four looks at testimonies to the 1992-1995 Bosnian war in the comic books of Joe Sacco. Sacco’s visual, self-reflexive strategies and his focus on the international media industry provide a critique of the way trauma is mediated, (re)produced, and commodified.
Spectral decomposition and matrix-valued orthogonal polynomials
Creators: name: Groenevelt, Wolter
name: Ismail, Mourad E. H.
name: Koelink, Erik
Publisher: name: arXiv
Year: 2012
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics

description: The relation between the spectral decomposition of a self-adjoint operator which is realizable as a higher order recurrence operator and matrix-valued orthogonal polynomials is investigated. A general construction of such operators from scalar-valued orthogonal polynomials is presented. Two examples of matrix-valued orthogonal polynomials with explicit orthogonality relations and three-term recurrence relation are presented, which both can be considered as $2\times 2$-matrix-valued analogues of subfamilies of Askey-Wilson polynomials.
description: 15 pages
FEATURES OF THE COGNITIVE SPHERE OF CHILDREN AND ADOLESCENTS WITH DIFFERENT LEVELS OF MEDIA TASKING
Creators: name: Soldatova, Galina U.
name: Vishneva, Anastasiya E.
name: Koshevaya, Anastasiya G.
Publisher: name: Материалы Международного психологического форума «Ребенок в цифровом мире»
Year: 2022
Subjects: multitasking
media multitasking
cognitive functions
children
adolescences
effectiveness of multitasking

description: Abstract: Media multitasking (MMT) has become widespread among the younger generation due to the digital transformation. On one hand, this format is resource-intensive for the cognitive system, on the other, the human brain can adapt to the requirements of the environment. Research analysis showed conflicting results regarding the nature of the impact of MMT on children’s and adolescents’ cognitive development. This paper aims to describe neurocognitive features of children and adolescents with singleand multitasking strategies and to identify the relationship between task execution strategy and neurocognitive features in different age groups. 148 schoolchildren were recruited (49% girls, 51% boys): 34% aged 7-10 years, 35% aged 11-13 years and 31% aged 14-16 years. Methods: quasi-experimental research, which included task performance on a computer and a smartphone; neuropsychological block of techniques (Akhutina, 2016); computer test "Dots: Hearts & Flowers" (Korneev et al., 2018); WISC subtests (Information and Comprehension). The sample was divided into 3 groups according to MMT level: single-taskers (43%), single-taskers with multitasking elements (41%), and multitaskers (16%). At 37 primary school age, single-taskers showed the best orientation in new tasks, higher results in programming and control, serial organization of movements, auditory and visual-spatial information processing, right-hemisphere functions and neurodynamics. Younger adolescents demonstrated differences in subscales of the serial organization indices. Older adolescent single-taskers had higher results in processing of visual-spatial information. However, multitaskers were more productive in serial organization index subscales. MMT becomes more widespread among the older adolescents, which is confirmed by the same results in neuropsychological testing of multitaskers and single-taskers and by some cognitive advantages of multitaskers. This may be explained by the maturation of arbitrary regulation, self-control, and serial organization by adolescents. In primary school age children, multitasking was a compensatory strategy with immaturity of arbitrary regulation, serial organization, insufficient auditory and visual memory volume and neurodynamics. The research was supported by the Russian Foundation for Fundamental Research, project 19-29-14181 “Multitasking in the structure of digital socialization: cognitive and personality factors of effectiveness in the context of education digitalization”.
FEATURES OF HEALTH ANXIETY IN CHILDREN AGED 9-12 IN A PANDEMIC SITUATION
Creators: name: Pechnikova, Leonora
name: Arina, Galina
name: Iosifyan, Marina
name: Chudova, Elena
Publisher: name: Материалы Международного психологического форума «Ребенок в цифровом мире»
Year: 2022
Subjects: anxiety
Covid-19 pandemic
schoolchildren

description: Abstract: Problem: The impact of pandemic pathogenic factors on the development of value preferences and ideas about health in children. Subject: The dynamics of connections between health anxiety and individual value preferences in schoolchildren aged 9-12. Purpose: To study ideas about health in connection with the Covid-19 pandemic among schoolchildren aged 9-12. Materials and methods: Picture-Based Value Survey for Children (Doering et al., 2010), Childhood Illness Attitude Scales “CIAS” (Kristi D. Wright, Gordon J. G. Asmundson, 2003), Questionnaire on the level of involvement in preventive measures. Longitudinal study of 57 children aged 9-12 during the pandemic and 69 children aged 12. Results. 1. Health anxiety had developed by primary school age: health anxiety can be both age-dependent and determined by a specific developmental situation such as the dynamics of the pandemic 44 situation. 2. The situation of the pandemic did not lead to a clear increase in health anxiety in children of primary school age: in the third-grade students during the pandemic, the fear of getting sick was lower than before the pandemic; 5th graders had lower body vigilance than 3rd graders. 3. Health anxiety was positively associated with preventive behaviors that lead to a decrease in the level of biological threat. As the observation of children from grades 3-5 showed, the associations between values and heath anxiety increased in the pandemic situation. This indirectly points to the role of anxiety in the dynamics of value preferences, especially in relation to the values of conservation, personal success, and power. 4. Health anxiety was predominantly associated with behaviors that directly reduce biological threat (eg, handwashing, visiting a doctor), and values were predominantly associated with social isolation measures.
Long range interactions between like homonuclear alkali metal diatoms
Creators: name: Byrd, Jason N.
name: Cote, Robin
name: Montgomery, John A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Long range electrostatic and van der Waals coefficients up to terms of order R-8 have been evaluated by the sum over states method using ab initio and time dependent density functional theory. We employ several widely used density functionals and systematically investigate the convergence of the calculated results with basis set size. Static electric moments and polarizabilities up to octopole order are also calculated. We present values for Li2 through K2 which are in good agreement with existing values, in addition to new results for Rb2 and Cs2. Interaction potential curves calculated from these results are shown to agree well with high level it ab initio theory.
Advanced monitoring of rail breakage in double-track railway lines by means of PCA techniques
Creators: name: Espinosa, F.
name: García, J. J.
name: Hernández, A.
name: Mazo, M.
name: Ureña, J.
name: Jiménez, J. A.
name: Fernández, I.
name: Pérez, C.
name: García, J. C.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This work describes a classifier designed to identify rail breakages in double-track railway lines, completing the electronic equipment carried out by authors. The main objective of this proposal is to guarantee the integrity of tracks before the railway traffic starts working. In addition, it facilitates maintenance tasks providing information about possible breakages. The detection of breakages is based on the analysis of eight currents provided by the electronic equipment, one per rail, at the ends of the section (emitting and receiving nodes). The imbalance that occurs among the value of these currents implies that there is at least a breakage in the track section under analysis. This analysis is conducted according to three phases. The first one identifies whether there is a breakage, and, in that case, the damaged track is identified. The second phase provides information about which rail is broken (internal, external or both of them) in the previously identified track. Finally, if there is only one breakage, the third phase estimates its most likely zone along the track section. This situation is considered as a classification problem, and solved by means of the Principal Component Analysis technique. This means that a significant number of measurements is required for every breakage pattern (types of breakages) to be considered. Due to the difficulty of having real data, the proposal has been validated using an 8km-long double-track hardware simulator specially designed by the authors, with specific localizations for breakages.
Ferromagnetic interaction between Cu ions in the bulk region of Cu-doped ZnO nanowires
Creators: name: Kataoka, T.
name: Yamazaki, Y.
name: Singh, V. R.
name: Fujimori, A.
name: Chang, F. -H.
name: Lin, H. -J.
name: Huang, D. J.
name: Chen, C. T.
name: Xing, G. Z.
name: Seo, J. W.
name: Panagopoulos, C.
name: Wu, T.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have studied the electronic structure and the magnetism of Cu-doped ZnO nanowires, which have been reported to show ferromagnetism at room temperature [G. Z. Xing ${et}$ ${al}$., Adv. Mater. {\bf 20}, 3521 (2008).], by x-ray photoemission spectroscopy (XPS), x-ray absorption spectroscopy (XAS) and x-ray magnetic circular dichroism (XMCD). From the XPS and XAS results, we find that the Cu atoms are in the "Cu$^{3+}$" state with mixture of Cu$^{2+}$ in the bulk region ($\sim$ 100 nm), and that "Cu$^{3+}$" ions are dominant in the surface region ($\sim$ 5 nm), i.e., the surface electronic structure of the surface region differs from the bulk one. From the magnetic field and temperature dependences of the XMCD intensity, we conclude that the ferromagnetic interaction in ZnO:Cu NWs comes from the Cu$^{2+}$ and "Cu$^{3+}$" states in the bulk region, and that most of the doped Cu ions are magnetically inactive probably because they are antiferromagnetically coupled with each other.
description: 4 pages, 4 figures
On a Formulation of Qubits in Quantum Field Theory
Creators: name: Calmet, Jacques
name: Calmet, Xavier
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Qubits have been designed in the framework of quantum mechanics. Attempts to formulate the problem in the language of quantum field theory have been proposed already. In this short note we refine the meaning of qubits within the framework of quantum field theory. We show that the notion of gauge invariance naturally leads to a generalization of qubits to QFTbits which are then the fundamental carriers of information from the quantum field theoretical point of view. The goal of this note is to stress the availability of such a generalized concept of QFTbits.
description: 6 pages
FEATURES OF THE USE OF DIGITAL TECHNOLOGIES FOR THE DEVELOPMENT OF OLDER PRESCHOOLERS IN THE CONTEXT OF FAMILY EDUCATION
Creators: name: Shumakova, Natalia
name: Belova, Elena
Publisher: name: Материалы Международного психологического форума «Ребенок в цифровом мире»
Year: 2022
Subjects: digital technologies
preschool children
family education

description: Abstract: The study of the influence of digital technologies, as a component of the educational microenvironment, on preschool development is one of the topical areas of modern psychology. Our research was aimed at identifying the features of the use of digital technologies (computers and tablets) in family education and studying their influence on the intellectual development of older preschoolers. Participants: 184 children aged 5-7 years (90 boys, 94 girls; Mage=6.79, SD=0.31) and their parents (predominantly mothers: 157 mothers, 27 fathers). Methods: Express-Diagnostics of Intellectual Abilities; special technique for revealing the creative and intellectual potential of children; a survey of parents. Results: In the families of the majority of preschoolers (95.65%), digital technologies were used for their development. The frequency of use varied: 1-2 times a week (39.74% of children); 3-4 times a week (40.34%); 5-7 times a week (19.89%). Parents set time limits for children: 48.3% of preschool children spent no more than 20-30 minutes at the computer, while 46.59% spent from 30 minutes to an hour. There were parents who allowed their children to spend more than an hour at the computer (5.11% of preschool children). When parents chose computer programs / games, preference was given to those that develop logical thinking (73.3% of preschoolers), memory (52.84%), counting skills (52.27%), and reading (50%). Different types of coloring were also in demand (52.84%). Using a one-way ANOVA, it was found that preschoolers who spent time at the computer 1-2 times a week show a significantly higher level of development of intellectual abilities than their peers who use the computer more often (F=4.623; p=0.01). The results obtained confirm the importance and necessity of a comprehensive analysis of the use of digital technologies in family education of preschoolers.
2-dimensionales, differentielles Grenzschichtberechnungsverfahren nach Cebeci
Creators: name: Achner, Andreas
name: Marzi, Jochen
Publisher: name: TUHH Universitätsbibliothek
Year: 1984
Subjects: classificationCode: 52.00
subject: Maschinenbau, Energietechnik, Fertigungstechnik: Allgemeines

description: 2-dimensionales, differentielles Grenzschichtberechnungsverfahren nach Cebeci Beschreibung und Berechnungsbeispiele