cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: ПРЕЖДЕВРЕМЕННЫЕ РОДЫ: СТРЕССОВЫЕ И НЕВРОТИЧЕСКИЕ РАССТРОЙСТВА ЛИЧНОСТИ
Creators: name: Пашов, Александр Иванович
name: Синчихин, Сергей Петрович
name: Реверчук, Игорь Васильевич
name: Горбунов, Александр Петрович
name: Степанцова, Мария Геннадьевна
name: Рачковская, Валерия Валентиновна
Publisher: name: Астраханский государственный медицинский университет
Year: 2022
Subjects: subject: Clinical medicine
subject: FOS: Clinical medicine

description: Обсуждены вопросы развития преждевременных родов у женщин с невротическими и стрессо-выми расстройствами личности. Рассмотрена частота встречаемости преждевременных родов как в мировой практике, так и на территории Российской Федерации, в том числе по Калинин-градской области. Проанализированы различные теории патогенеза преждевременных родов, а также описаны основные факторы риска развития психоневротических расстройств, которые могут встречаться у женщин, планирующих беременность, и у беременных. Особое внимание уделено раннему выявлению психоневротических расстройств, их лечению и коррекции.
In remote nubi di gas, le tracce delle prime stelle
Creators: Redazione Media Inaf
Publisher: name: Media Inaf
Year: 2023

Scoperte le impronte lasciate dall’esplosione delle prime stelle dell’universo in nubi di gas risalenti a 11 miliardi di anni fa, osservate attraverso il Very Large Telescope dell’European Southern Observatory da un team internazionale di cui fanno parte ricercatrici e ricercatori dell'Università di Firenze e dell'Inaf
Random matrices and quantum spin chains
Creators: name: Keating, J. P.
name: Linden, N.
name: Wells, H. J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Random matrix ensembles are introduced that respect the local tensor structure of Hamiltonians describing a chain of $n$ distinguishable spin-half particles with nearest-neighbour interactions. We prove a central limit theorem for the density of states when $n \rightarrow\infty$, giving explicit bounds on the rate of approach to the limit. Universality within a class of probability measures and the extension to more general interaction geometries are established. The level spacing distributions of the Gaussian Orthogonal, Unitary and Symplectic Ensembles are observed numerically for the energy levels in these ensembles.
description: Updated figures, as accepted in 'Markov Processes and Related Fields' on 3 March 2014
Phylogeography of social polymorphism in a boreo-montane ant
Creators: name: Trettin, Jürgen
name: Agrawal, Shobhit
name: Heinze, Jürgen
Publisher: name: Universität Regensburg
Year: 2016
Subjects: subject: GENETIC DIFFERENTIATION; POPULATION-STRUCTURE; LEPTOTHORAX-ACERVORUM; REPRODUCTIVE SKEW; COMPUTER-PROGRAM; QUEEN TURNOVER; ORGANIZATION; SOFTWARE; REFUGIA; NUMBER; Bottlenecks; Extra-Mediterranean refugia; Gene flow; Leptothorax acervorum; Phylogeography; Plastic behaviour; Population structure; Quaternary climate change; Reproductive skew
subject: 590 Tiere (Zoologie)

description: Background: The disjunct distribution of several Palearctic species has been widely shaped by the changes in climatic conditions during the Quaternary. The observed genetic differentiation or reproductive isolation between extant populations may be the outcome of their contemporary geographic separation or reproductive incompatibility due to differences in phenotypic traits which have evolved in isolated refugia. In the boreal ant Leptothorax acervorum, colonies from central and peripheral populations differ in social structure: colonies from Central and Northern Europe may contain several equally reproductive queens (facultative polygyny), while in colonies from peripheral populations in Spain only one the most dominant of several queens lays eggs (functional monogyny). By reconstructing the specie's evolutionary and demographic history in Southwestern Europe we examine whether variation in social organization is associated with restricted gene flow between the two social forms. Results: We show that multi-queen colonies from all so far known inner Iberian populations of L. acervorum are functionally monogynous, whereas multi-queen colonies from all Pyrenean populations are polygynous, like those from other previously studied areas in Europe. Our analyses revealed complex spatial-genetic structure, but no association between spatial-genetic structure and social organization in SW-Europe. The population in the western Pyrenees diverged most strongly from other Iberian populations. Moreover, microsatellite data suggest the occurrence of recent bottlenecks in Pyrenean and inner Iberian populations. Conclusions: Our study shows a lack of reproductive isolation between the two social forms in SW-Europe. This in turn suggests that demographic and spatial patterns in genetic variation as well as the distribution of social phenotypes are better explained by co-variation with climatic, ecological, and historical factors. Moreover, we for the first time show the existence of substantial spatial-genetic structure in L. acervorum, suggesting the existence of multiple refugia in SW-Europe, including two extra-Mediterranean refugia in France. While gene flow among inner Iberian refugia may have been larger during the late glacial, extra-Mediterranean refugia in southern France may have contributed to the post-glacial recolonization of W-Europe.
Learning not to take the bait: a longitudinal examination of digital training methods and overlearning on phishing susceptibility
Creators: name: Nguyen, Christopher
name: Jensen, Matthew
name: Day, Eric
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Space Science
subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: As phishing becomes increasingly sophisticated and costly, interventions that improve and prolong resistance to attacks are needed. Previous research supported digital training as a method to reduce phishing susceptibility. However, the effects of training degrade with time. Therefore, we investigate overlearning as an approach that may increase skill retention through repetition and developing automaticity. We performed a longitudinal experiment crossing overlearning with anti-phishing digital training (rule-based, mindfulness, and control). Participants were tested using email identification tests (immediately following and 10 weeks after training) and mock phishing messages delivered to their inboxes (1 week and 8 weeks following training). Results showed that compared to rule-based training, mindfulness training resulted in significantly greater retention in terms of better email discrimination and less susceptibility to phishing attacks but similar levels of caution towards phishing after 2 months. Overlearning resulted in significantly less susceptibility to phishing attacks and more caution towards phishing compared to no overlearning but did not impact the digital training approaches. Even so, mindfulness was more beneficial compared to overlearning. Altogether, the results demonstrate the stability of the benefits of mindfulness training over time in terms of mitigating phishing susceptibility without influencing the chances of missing legitimate emails.
title: Les approches interculturelles : Esquisse des difficultés rencontrées par les enseignants dans des classes hétérogènes pour une pédagogie interculturelle
title: Les approches interculturelles : Esquisse des difficultés rencontrées par les enseignants dans des classes hétérogènes pour une pédagogie interculturelle
titleType: AlternativeTitle
Creators: name: Chassot, Canisia
name: Duboux, Nathalie
Publisher: name: Unknown
Year: 0
Subjects: subject: approches interculturelles
subject: compétences interculturelles
subject: pédagogie culturellement pertinente
subject: hétérogénéité
subject: altérité
subject: diversité culturelle
subject: pratique interculturelle

description: Ce travail propose de mettre en évidence la mise en place des approches interculturelles dans des classes hétérogènes au niveau du secondaire 1: Quelle est la prise en compte de la diversité culturelle par les enseignants? Que-ce que leur pratique révèle de leur compréhension de l’interculturalité demandée par les différentes directives et recommandations romandes? A cet effet, nous avons postulé que, d’une part, certains outils et ressources manquent aux enseignants du secondaire pour pouvoir mettre en place une pédagogie interculturelle, et que d’autre part, l’histoire personnelle interculturelle des enseignants peut être une plus-value pour la pratique des approches interculturelles. Grâce à un questionnaire transmis aux enseignants de deux établissements scolaires du secondaire 1 du canton de Vaud, nous avons tenté de valider nos postulats. Il en ressort effectivement un manque de moyens et de ressources pédagogiques pour une mise en pratique d’activités interculturelles. Quant à notre seconde hypothèse, nous n’avons pu la valider. En effet, la plus-value pédagogique des enseignants ayant une histoire interculturelle n’est pas automatique.
An immodest proposal – going “All in” on replication research in information systems
Creators: name: Brendel, Alfred Benedikt
name: Diederich, Stephan
name: Niederman, Fred
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Cancer
subject: Science Policy

description: Genuine theory testing, also under the term “replication research”, is rarely found in Information Systems (IS) research. Based on a replication’s results, our understanding or representation of the original theory is updated. This function of replication is integral to a scientific discipline to accumulate confidence in the explanatory power of a theory and to weed out theories that did not withstand scrutiny. However, many new theories are only tested once in the original study, while subsequent studies reference it without explicitly questioning the original theory. Against this background, we examine three aspects of the current state of replication studies in IS: (1) how many explicit replication studies in key IS research outlets have been published; (2) the attitudes of senior scholars, mostly prestigious IS journals’ editors, towards publishing replication research in their journals; and (3) a new policy proposal towards replication research broadly across all journals. We propose that all journals should take responsibility for publishing replications of theory or empirical results that have formerly been presented in that journal.
Development of Artificial Intelligence Methods for Dynamic Electrochemical Studies of Complex Reaction Mechanisms
Creators: name: GUNDRY, LUKE WILLIAM
Publisher: name: Monash University
Year: 2022
Subjects: Electroanalytical chemistry

description: The identification of electrochemical systems is generally a complex process with many difficulties. In this thesis a range of artificial intelligence methods are developed for the analysis of cyclic DC voltammetry and Fourier transformed AC voltammetry, these automated methods are then applied to interesting electrochemical systems. A range of artificial intelligence methods are based on techniques of statistics and machine learning with the specific methods being Optimisation, Bayesian inference, Supervised learning, and Unsupervised learning. In this thesis these methods show promise at extracting and identifying electrochemical information that was previously not possible by manual methods of analysis.
Personal use of technology at work: a literature review and a theoretical model for understanding how it affects employee job performance
Creators: name: Jiang, Hemin
name: Siponen, Mikko
name: Tsohou, Aggeliki
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Science Policy

description: Employee personal use of technology at work (PUTW) – defined as employees’ activities using organisational or personal IT resources for non-work-related purposes while at work – is increasingly common. Our review of existing PUTW studies (n = 137) suggests that previous studies widely discussed PUTW outcomes, antecedents, and policies. The literature review also indicates that previous studies proposed opposing viewpoints regarding the effect of PUTW on employee job performance, but few studies offered empirical evidence. Consequently, the conditions under which PUTW can increase or decrease employee job performance have not been discussed. We develop a theoretical model for increasing the understanding of this issue. Our model suggests that executive attention is an important underlying mechanism through which PUTW affects employee job performance. We further suggest the effect of PUTW on executive attention (and job performance) depends on PUTW behavioural characteristics in terms of four dimensions: PUTW cognitive load, PUTW arousal level, PUTW timing, and PUTW frequency/duration. The model can advance researchers’ understanding of the possible conditions under which PUTW may increase or decrease employee job performance. The model also offers new insights into existing studies on PUTW antecedents and policies. As a result, our proposed model provides new theoretical guidance for future studies on PUTW.
Big science, big data: la nuova era dell’astronomia
Creators: Marco Malaspina
Publisher: name: Media Inaf
Year: 2023

È stata annunciata oggi la pubblicazione della “Science Vision and Infrastructure Roadmap 2022-2035” del consorzio internazionale di astronomi Astronet. Elenca alcune raccomandazioni su come fare progredire la nostra comprensione dell’universo nel prossimo decennio. Ne parliamo con il rappresentante per l’Inaf nel board di Astronet, l’astronomo Salvatore Sciortino
Rheology of weakly wetted granular materials - a comparison of experimental and numerical data
Creators: name: Schwarze, Ruediger
name: Gladkyy, Anton
name: Uhlig, Fabian
name: Luding, Stefan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Shear cell simulations and experiments of weakly wetted particles (a few volume percent liquid binders) are compared, with the goal to understand their flow rheology. Application examples are cores for metal casting by core shooting made of sand and liquid binding materials. The experiments are carried out with a Couette-like rotating viscometer. The weakly wetted granular materials are made of quartz sand and small amounts of Newtonian liquids. For comparison, experiments on dry sand are also performed with a modified configuration of the viscometer. The numerical model involves spherical, monodisperse particles with contact forces and a simple liquid bridge model for individual capillary bridges between two particles. Different liquid content and properties lead to different flow rheology when measuring the shear stress-strain relations. In the experiments of the weakly wetted granular material, the apparent shear viscosity $η_g$ scales inversely proportional to the inertial number $I$, for all shear rates. On the contrary, in the dry case, an intermediate scaling regime inversely quadratic in $I$ is observed for moderate shear rates. In the simulations, both scaling regimes are found for dry and wet granular material as well.
Il disco protoplanetario di V1295 Aquilae
Creators: Jacopo Danieli
Publisher: name: Media Inaf
Year: 2023

Un team di astronomi dell’Università del Michigan ha presentato la più dettagliata immagine mai ottenuta della regione interna di un disco protoplanetario. Grazie alla tecnica dell’interferometria ottica, il team è riuscito a ottenere un livello di dettaglio non raggiungibile nemmeno dai più potenti telescopi spaziali, rivelando inaspettate strutture in movimento e misteriose emissioni interne
A neutron noise solver based on a discrete ordinates method.
Creators: name: Huaiqian YI
Publisher: name: Zenodo
Year: 2020
Subjects: Neutron noise
nuclear reactor modelling
Deterministic neutron transport methods
Discrete ordinates
Diffusion synthetic acceleration
Convergence analysis

description: A neutron noise transport modelling tool is presented in this thesis. The simulator allows to
 determine the static solution of a critical system and the neutron noise induced by a prescribed
 perturbation of the critical system. The simulator is based on the neutron balance equations in
 the frequency domain and for two-dimensional systems. The discrete ordinates method is used
 for the angular discretization and the diamond finite difference method for the treatment of the
 spatial variable. The energy dependence is modelled with two neutron energy groups. The
 conventional inner-outer iterative scheme is employed for solving the discretized neutron
 transport equations. For the acceleration of the iterative scheme, the diffusion synthetic
 acceleration is implemented.
 The convergence rate of the accelerated and unaccelerated versions of the simulator is studied
 for the case of a perturbed infinite homogeneous system. The theoretical behavior predicted by
 the Fourier convergence analysis agrees well with the numerical performance of the simulator.
 The diffusion synthetic acceleration decreases significantly the number of numerical iterations,
 but its convergence rate is still slow, especially for perturbations at low frequencies.
 The simulator is further tested on neutron noise problems in more realistic, heterogeneous
 systems and compared with the diffusion-based solver. The diffusion synthetic acceleration
 leads to a reduction of the computational burden by a factor of 20. In addition, the simulator
 shows results that are consistent with the diffusion-based approximation. However,
 discrepancies are found because of the local effects of the neutron noise source and the strong
 variations of material properties in the system, which are expected to be better reproduced by a
 higher-order transport method such as the one used in the new solver.
Da V1355 Orionis, un brillamento super
Creators: Giuseppe Fiasconaro
Publisher: name: Media Inaf
Year: 2023

Ha rilasciato un'energia centomila volte maggiore di quella di un tipico brillamento solare.  Il super brillamento – così chiamano gli astronomi queste potentissime emissioni di plasma – è stato prodotto da una delle due stelle che formano il sistema binario V1355 Orionis e osservato in dettaglio da un team di astronomi guidato dall'Università di Kyoto
Critical Casimir Interactions Between Spherical Particles in the Presence of the Bulk Ordering Fields
Creators: name: Vasilyev, Oleg A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The spatial suppression of order parameter fluctuations in a critical media produces Critical Casimir forces acting on confining surfaces. This scenario is realized in a critical binary mixture near the demixing transition point that corresponds to the second order phase transition of the Ising universality class. Due to these critical interactions similar colloids, immersed in a critical binary mixture near the consolute point, exhibit attraction. The numerical method for computation of the interaction potential between two spherical particles using Monte Carlo simulations for the Ising model is proposed. This method is based on the integration of the local magnetization over the applied local magnetic field. For the stronger interaction the concentration of the component of the mixture that does not wet colloidal particles, should be larger, than the critical concentration. The strongest amplitude of the interactions is observed below the critical point.
description: 7 pages, 4 figures
Optimal migration
Creators: name: Xu, David
Publisher: name: Macquarie University
Year: 2022
Subjects: Other education not elsewhere classified

description: This study provides a theoretical exploration on the optimality of migration in a two-country world. It provides what determines the optimal stationary state of migration in a two-country dynamic stochastic general equilibrium framework, with endogenous and costly migration. With productive capital also included in the framework, this work provides insights into the substitutability between labour mobility and endogenous capital adjustment. In general, we study migration under three possible political regimes, which are: 1) a single global planner; 2) two countries with their own central planners; and 3) two free-market economies under perfect and imperfect competition. A single benevolent planner delivers the global optimum welfare and the optimal size of migration. With two planners, we compare the outcomes of Nash and cooperation games, and suggest that a cooperation game is not necessarily superior to a Nash game in determining migration. Comparing planned to free-market economies, we find that a central planner and the perfectly competitive free-market economy are equivalent in terms of welfare maximization with migration. In imperfectly competitive free-market economies, this study shows how efficient wage-employment contracts of all labour groups (home, foreign and migrant labour) interact with each other, with migration jointly determined by all groups’ productivity, costs of migration and labour market bargaining in both economies. A comparison of the derived welfare outcomes shows that migration can improve social welfare for both home and foreign economies, and that the global welfare optimum can be reached by a single global planner, two central planners and perfectly competitive free-market economies. The imperfectly competitive free-market economies cannot achieve the same welfare state due to the presence of bargaining frictions and natural level of unemployment. Our simulation of the imperfectly competitive free-market model presents the general equilibrium responses to productivity, cost of migration and leisure shocks. A positive productivity shock can increase its origin’s output and households’ utility, while its effects on the other economy rely on the relative bargaining powers of labour market participants and on the degree of capital adjustment in both countries. Leisure shocks can reduce the utility of their own households, while a foreign leisure shock benefits the home households because it can stimulate migration. A cost of migration shock is at the cost of both home and foreign welfare via migration and capital adjustment. We show that there is a degree of substitutability between the labour mobility of migration and endogenous capital movements in adjusting to the full general equilibrium.
title: Inclure le queer dans l'enseignement de l'histoire : Quelles difficultés et remédiations pour la construction d'une séquence d'histoire inclusive ?
title: Inclure le queer dans l'enseignement de l'histoire : Quelles difficultés et remédiations pour la construction d'une séquence d'histoire inclusive ?
titleType: AlternativeTitle
Creators: name: Mendes, Ruben
Publisher: name: Unknown
Year: 0

description: Ce travail de mémoire se penche sur les inégalités de genres et de sexualités constatées dans l’histoire enseignée et confirmées par de nombreuses recherches. En effet, il apparaît que les manuels d’histoire maintiennent les stéréotypes de genre et présentent un déséquilibre quantitatif axé majoritairement sur les normes d’hétérosexualité au détriment des autres identités sexuelles. L’enseignement de l’histoire des sexes, genres et sexualités est donc absent de notre cursus scolaire ne permettant pas à nos élèves de découvrir que des sociétés antiques ont organisés les relations sexuelles de façon différente à la leur ni de comprendre comment et pourquoi les sexes et genres ainsi que les rapports de sexualité s’agencent à notre époque d’une certaine façon. Partant de ce constat, il s’agit de construire une séquence d’histoire inclusive destinée au secondaire I, abordant la thématique de la Deuxième Guerre mondiale, incorporant la figure queer. Afin d’y parvenir, différents leviers et plusieurs obstacles basés sur la littérature scientifique sont pris en compte. Une grille d’analyse établie sur la base de ces éléments permet d’évaluer l’adéquation avec l’histoire inclusive de la séquence proposée. Il apparaît alors qu’il est possible, dans une large mesure, de proposer aux élèves une séquence incluant des minorités, bien que certains obstacles subsistent, tels que la découverte des nouvelles sources ou la sélection de certains documents.
Some aspects of signal analysis of WP 2 CROCUS and AKR-2 experiments in comparison to WP 4 NPP Goesgen measurements
Creators: name: Pohlus, Joachim
name: Pohl, Christoph
Publisher: name: Zenodo
Year: 2020

description: Some aspects of signal analysis of WP 2 CROCUS and AKR-2 experiments in comparison to WP 4 NPP Goesgen measurements
Curcumin and Graphene Oxide Incorporated into Alginate Hydrogels as Versatile Devices for the Local Treatment of Squamous Cell Carcinoma
Creators: name: Madeo, Lorenzo Francesco
name: Sarogni, Patrizia
name: Cirillo, Giuseppe
name: Vittorio, Orazio
name: Voliani, Valerio
name: Curcio, Manuela
name: Shai-Hee, Tyler
name: Büchner, Bernd
name: Mertig, Michael
name: Hampel, Silke
Publisher: name: Basel : MDPI
Year: 2022
Subjects: subject: Alginate hydrogels
subject: Curcumin
subject: Graphene oxide
subject: Hybrid hydrogels
subject: Ionic crosslinking
subject: Squamous cell carcinoma
subject: 600

description: With the aim of preparing hybrid hydrogels suitable for use as patches for the local treatment of squamous cell carcinoma (SCC)-affected areas, curcumin (CUR) was loaded onto graphene oxide (GO) nanosheets, which were then blended into an alginate hydrogel that was crosslinked by means of calcium ions. The homogeneous incorporation of GO within the polymer network, which was confirmed through morphological investigations, improved the stability of the hybrid system compared to blank hydrogels. The weight loss in the 100–170 °C temperature range was reduced from 30% to 20%, and the degradation of alginate chains shifted to higher temperatures. Moreover, GO enhanced the stability in water media by counteracting the de-crosslinking process of the polymer network. Cell viability assays showed that the loading of CUR (2.5% and 5% by weight) was able to reduce the intrinsic toxicity of GO towards healthy cells, while higher amounts were ineffective due to the antioxidant/prooxidant paradox. Interestingly, the CUR-loaded systems were found to possess a strong cytotoxic effect in SCC cancer cells, and the sustained CUR release (~50% after 96 h) allowed long-term anticancer efficiency to be hypothesized.
Non-linear effects in electron cyclotron current drive applied for the stabilization of neoclassical tearing modes
Creators: name: Ayten, B.
name: Westerhof, E.
name: Team, ASDEX Upgrade
Publisher: name: arXiv
Year: 2013
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Due to the smallness of the volumes associated with the flux surfaces around the O-point of a magnetic island, the electron cyclotron power density applied inside the island for the stabilization of neoclassical tearing modes (NTMs) can exceed the threshold for non-linear effects as derived previously by Harvey et al, Phys. Rev. Lett. 62 (1989) 426. We study the non-linear electron cyclotron current drive (ECCD) efficiency through bounce-averaged, quasi-linear Fokker-Planck calculations in the magnetic geometry as created by the islands. The calculations are performed for the parameters of a typical NTM stabilization experiment on ASDEX Upgrade. A particular feature of these experiments is that the rays of the EC wave beam propagate tangential to the flux surfaces in the power deposition region. The calculations show significant non-linear effects on the ECCD efficiency, when the ECCD power is increased from its experimental value of 1 MW to a larger value of 4 MW. The nonlinear effects are largest in case of locked islands or when the magnetic island rotation period is longer than the collisional time scale. The non-linear effects result in an overall reduction of the current drive efficiency for this case with absorption of the EC power on the low field side of the electron cyclotron resonance layer. As a consequence of the non-linear effects, also the stabilizing effect of the ECCD on the island is reduced from linear expectations.
The Mass of the Black Hole in LMC X-3
Creators: name: Orosz, Jerome A.
name: Steiner, James F.
name: McClintock, Jeffrey E.
name: Buxton, Michelle M.
name: Bailyn, Charles D.
name: Steeghs, Danny
name: Guberman, Alec
name: Torres, Manuel A. P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We analyze a large set of new and archival photometric and spectroscopic observations of LMC X-3 to arrive at a self-consistent dynamical model for the system. Using echelle spectra obtained with the MIKE instrument on the 6.5m Magellan Clay telescope and the UVES instrument on the second 8.2m Very Large Telescope we find a velocity semiamplitude for the secondary star of $K_2=241.1\pm 6.2$ km s$^{-1}$, where the uncertainty includes an estimate of the systematic error caused by X-ray heating. Using the spectra, we also find a projected rotational velocity of $V_{\rm rot}\sin i=118.5\pm 6.6$ km s$^{-1}$. From an analysis of archival $B$ and $V$ light curves as well as new $B$ and $V$ light curves from the SMARTS 1.3m telescope, we find an inclination of $i=69.84\pm 0.37^{\circ}$ for models that do not include X-ray heating and an inclination of $i=69.24\pm 0.72^{\circ}$ for models that incorporate X-ray heating. Adopting the latter inclination measurement, we find masses of $3.63\pm 0.57\,M_{\odot}$ and $6.98\pm 0.56\,M_{\odot}$ for the companion star and the black hole, respectively. We briefly compare our results with earlier work and discuss some of their implications.
description: 31 pages, 15 figures, substantial revisions, ApJ, accepted
Personal use of technology at work: a literature review and a theoretical model for understanding how it affects employee job performance
Creators: name: Jiang, Heming
name: Siponen, Mikko
name: Tsohou, Aggeliki
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Science Policy

description: Employee personal use of technology at work (PUTW) – defined as employees’ activities using organisational or personal IT resources for non-work-related purposes while at work – is increasingly common. Our review of existing PUTW studies (n = 137) suggests that previous studies widely discussed PUTW outcomes, antecedents, and policies. The literature review also indicates that previous studies proposed opposing viewpoints regarding the effect of PUTW on employee job performance, but few studies offered empirical evidence. Consequently, the conditions under which PUTW can increase or decrease employee job performance have not been discussed. We develop a theoretical model for increasing the understanding of this issue. Our model suggests that executive attention is an important underlying mechanism through which PUTW affects employee job performance. We further suggest the effect of PUTW on executive attention (and job performance) depends on PUTW behavioural characteristics in terms of four dimensions: PUTW cognitive load, PUTW arousal level, PUTW timing, and PUTW frequency/duration. The model can advance researchers’ understanding of the possible conditions under which PUTW may increase or decrease employee job performance. The model also offers new insights into existing studies on PUTW antecedents and policies. As a result, our proposed model provides new theoretical guidance for future studies on PUTW.
TSFZ Growth of Eu-Substituted Large-Size LSCO Crystals
Creators: name: Voloshyna, Olesia
name: Romaka, Vitaliy V.
name: Karmakar, Koushik ;Seiro, Silvia
name: Maljuk, Andrey
name: Büchner, Bernd
Publisher: name: Basel : MDPI
Year: 2022
Subjects: subject: travelling solvent floating zone
subject: X-ray diffraction
subject: cuprates
subject: superconducting materials
subject: 540

description: The travelling solvent floating zone (TSFZ) growth of Eu-substituted LSCO (La1.81−xEuxSr0.19CuO4, with nominal x = 0 ÷ 0.4) single crystals was systematically explored for the first time. The substitution of La with Eu considerably decreased the decomposition temperature. Optimal growth parameters were found to be: oxygen pressure 9.0–9.5 bars; Eu-free CuO-poor solvent (66 mol% CuO) with a molar ratio of La2O3:SrCO3:CuO = 4:4.5:16.5 and growth rate 0.6 mm/hour. The obtained single crystals were characterized with optical polarized microscopy, X-ray diffraction and energy-dispersive X-ray spectroscopy analysis. The solubility of Eu in LSCO appeared to be limited to x~0.36–0.38 under the used conditions. The substitution of La3+ with smaller Eu3+ ions led to a structural transition from tetragonal with space group I4/mmm for La1.81Sr0.19CuO4 (x = 0) to orthorhombic with space group Fmmm for La1.81−xSr0.19EuxCuO4 (x = 0.2, 0.3, 0.4), and to a substantial shrinking of the c-axis from 13.2446 Å (x = 0.0) to 13.1257 Å (x = 0.4). Such structural changes were accompanied by a dramatic decrease in the superconducting critical temperature, Tc, from 29.5 K for x = 0 to 13.8 K for 0.2. For x ≥ 0.3, no superconductivity was detected down to 4 K.
High magnetic field studies of the Vortex Lattice structure in YBa2Cu3O7
Creators: name: Cameron, A. S.
name: White, J. S.
name: Holmes, A. T.
name: Blackburn, E.
name: Forgan, E. M.
name: Riyat, R.
name: Loew, T.
name: Dewhurst, C. D.
name: Erb, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report on small angle neutron scattering measurements of the vortex lattice in twin-free YBa2Cu3O7, extending the previously investigated maximum field of 11~T up to 16.7~T with the field applied parallel to the c axis. This is the first microscopic study of vortex matter in this region of the superconducting phase. We find the high field VL displays a rhombic structure, with a field-dependent coordination that passes through a square configuration, and which does not lock-in to a field-independent structure. The VL pinning reduces with increasing temperature, but is seen to affect the VL correlation length even above the irreversibility temperature of the lattice structure. At high field and temperature we observe a melting transition, which appears to be first order, with no detectable signal from a vortex liquid above the transition.
title: En quoi le module "contrat de travail" peut-il être un outil porteur de sens pour les élèves qui intègrent le monde du travail ? : Proposition d'une séquence d'enseignement dans la discipline d'économie et droit aux élèves 11VG.
title: En quoi le module "contrat de travail" peut-il être un outil porteur de sens pour les élèves qui intègrent le monde du travail ? : Proposition d'une séquence d'enseignement dans la discipline d'économie et droit aux élèves 11VG.
titleType: AlternativeTitle
Creators: name: Baud, Sarah
name: Cañon Botello-Berna, Marbelis
Publisher: name: Unknown
Year: 0
Subjects: subject: transition
subject: utilité
subject: le contrat de travail
subject: capacités transversales
subject: monde professionnel
subject: compétences émotionnelles

description: En tant qu’enseignant.e, il est de notre devoir de préparer les jeunes adolescents à affronter le monde du travail. Dès alors, il est important de les soutenir et éveiller leur curiosité durant cette étape cruciale de leur vie. Dans le cadre de l’OCOM économie 11VG, nous avons donc opté pour un programme d’enseignement orienté métier et entreprise. Notre but est avant tout de susciter l’intérêt des élèves à travers des sujets utiles pour leur avenir professionnel, mais aussi personnel. C’est pourquoi, nous avons proposé une séquence intitulée « Le contrat de travail » composée de 4 axes : 1) les principales différences entre le droit public et le droit privé, 2) les lois du travail et les dispositions d’un contrat de travail, 3) les différentes déductions sociales, et 4) la préparation au processus d’embauche. En amont, nous avons récolté les avis des employeurs et des élèves à travers un questionnairediagnostique au sujet de l’utilité des thèmes qui allaient être traités dans le module. L’objectif était avant tout de cibler notre enseignement en fonction des besoins réels de ces deux acteurs. Les employeurs et les élèves ont jugé ces thèmes très importants et profitables pour se préparer au monde du travail. De plus, les employeurs ont aussi souligné l’importance de soutenir les élèves davantage dans le développement des capacités transversales et des compétences émotionnelles. Afin de pouvoir procéder à une analyse détaillée du niveau d’utilité de notre module pour les élèves, nous avons procédé à une récolte de données à travers un questionnaire-recherche en période 12, et d'une évaluation significative en fin de séquence. Sur la base des données récoltées, notre objectif était de vérifier si les savoirs enseignés étaient porteurs de sens. Les résultats du questionnaire et les observations en classe ont démontré une importante motivation des élèves. Ils ont jugé les thèmes utiles et intéressants pour leur avenir professionnel. Même si les résultats du travail significatif ont démontré une compréhension lacunaire au sujet des prévoyances, nous avons la certitude qu’ils ont retenu les points fondamentaux. Par ailleurs, nous avons observé durant ces périodes, un engagement considérable de leur part en développant leur capacité analytique et leur esprit critique. En conclusion, nous pouvons certainement affirmer que notre module était porteur de sens pour les élèves.
Bootstrapping closed hyperbolic surfaces
Creators: name: Bonifacio, James
Publisher: name: Apollo - University of Cambridge Repository
Year: 2022
Subjects: Regular Article - Theoretical Physics
Differential and Algebraic Geometry
Scale and Conformal Symmetries

description: The eigenvalues of the Laplace-Beltrami operator and the integrals of products of eigenfunctions and holomorphic $s$-differentials satisfy certain consistency conditions on closed hyperbolic surfaces. These consistency conditions can be derived by using spectral decompositions to write quadruple overlap integrals in terms of triple overlap integrals in different ways. We show how to efficiently construct these consistency conditions and use them to derive upper bounds on eigenvalues, following the approach of the conformal bootstrap. As an example of such a bootstrap bound, we find a numerical upper bound on the spectral gap of closed orientable hyperbolic surfaces that is nearly saturated by the Bolza surface.
Synthesis, Crystal Structure, and Physical Properties of two Polymorphs of CsGaSe2, and high temperature X-ray diffraction study of the phase transition kinetics
Creators: name: Friedrich, Daniel
name: Schlosser, Marc
name: Pfitzner, Arno
Publisher: name: Universität Regensburg
Year: 2016
Subjects: subject: 540 Chemie

description: The light gray selenogallate CsGaSe2-mC64 was obtained by reaction of stoichiometric amounts of CsN3, GaSe, and Se at elevated temperatures. Its crystal structure was determined by single-crystal X-ray diffraction. The compound crystallizes in the monoclinic space group C2/c (No. 15) with a = 11.043(2) Å, b = 11.015(4) Å, c = 16.810(2) Å, β = 99.49(1) °, V = 2016.7(8) Å3, and Z = 16 (powder data, ambient temperature). Its crystal structure features anionic layers ∞ 2 [Ga4Se8 4−] consisting of corner-sharing Ga4Se10 supertetrahedra. The compound undergoes a first-order phase transition at temperatures of 610 ± 10 °C. The hightemperature phase CsGaSe2-mC16 also crystallizes in the monoclinic space group C2/c (No. 15) with a = 7.651(3) Å, b = 12.552(4) Å, c = 6.170(3) Å, β = 113.62(4)°, V = 542.9(5) Å3, and Z = 4 (powder data, ambient temperature). The crystal structure of the high-temperature phase consists of SiS2 analogous chains ∞ 1 [GaSe2 −]. In situ high-temperature X-ray diffraction experiments were performed to study this phase transition. The crystallization kinetics of the phase transitions were studied using Johnson−Mehl−Avrami−Kolmogorov (JMAK) theory for isothermal crystallization processes. The activation energy of the phase transition was determined using the Arrhenius equation. Furthermore, the compound was studied by vibrational and diffuse reflectance spectroscopy.
Novel low modulus beta-type Ti–Nb alloys by gallium and copper minor additions for antibacterial implant applications
Creators: name: Alberta, Ludovico Andrea
name: Vishnu, Jithin
name: Hariharan, Avinash
name: Pilz, Stefan
name: Gebert, Annett
name: Calin, Mariana
Publisher: name: Rio de Janeiro : Elsevier
Year: 2022
Subjects: subject: Low modulus beta titanium alloy
subject: Antibacterial gallium and copper
subject: Orthopedic implant
subject: Mechanical properties
subject: Corrosion
subject: 670

description: This study aims to develop novel low-modulus, corrosion-resistant Ti-based alloys with enhanced antimicrobial properties for bone-related implant applications. Novel β-type (Ti–45Nb)-based alloys with minor additions of the antibacterial elements Ga and/or Cu (up to 4 wt.%) were produced by a two-step casting process followed by homogenization treatment. Three nominal compositions (Ti–45Nb)96-4 Ga, (Ti–45Nb)96–4Cu and (Ti–45Nb)96-2 Ga–2Cu (wt.%) were prepared based on alloy design approach using [Mo]eq and electron per atom (e/a) ratio. The influence of Ga and/or Cu addition on the phase constitution, mechanical response and corrosion characteristics in simulated body fluids (PBS, 37.5 °C) has been investigated. X-ray diffraction studies displayed a single β phase structure for all alloys, with an observed lattice contraction evidenced by the reduction of lattice parameters during Rietveld analysis. Homogenous equiaxed microstructures with grain sizes ranging from 55 μm up to 323 μm were observed for (Ti–45Nb)96-4 Ga, (Ti–45Nb)96-2 Ga–2Cu and (Ti–45Nb)96–4Cu alloys. The alloys displayed excellent plasticity with no cracking, or fracturing during compression tests. Their tensile strength, Young's modulus, maximum tensile strain and elastic energy were measured in the ranges of 544–681 MPa, 73–78 GPa, 17–28% and 2.5–3.7 MJ/m3, in the order (Ti–45Nb)96-4 Ga > (Ti–45Nb)96-2 Ga–2Cu > (Ti–45Nb)96–4Cu. In addition, it has been observed that micro-alloying Ti–Nb alloy with Ga and/or Cu posed no deleterious effect on the corrosion resistance in simulated body fluid conditions. The improvement in strength of the developed alloys has been discussed based on grain boundary and solid-solution strengthening, whereas the improved plasticity is attributed to work hardening.
Deep Learning-based Anomaly Detection in Nuclear Reactor Cores
Creators: name: Thanos Tasakos
name: Ioannou, George
name: Verma, Vasudha
name: Alexandridis, Georgios
name: Abdelhamid Dokhane
name: Stafylopatis, Andreas
Publisher: name: Zenodo
Year: 2021

description: •The introduction of a deep learning methodology for the classification of different perturbation types and their position in the reactor core, using convolutional neural networks
 •The performance of a complementary robustness analysis to assess the system's performance on noisy or missing data
 •The assessment of the system's functionality on plant measurements obtained from the Gösgennuclear power plan in Switzerland
Spiral order in the honeycomb iridate Li2IrO3
Creators: name: Reuther, Johannes
name: Thomale, Ronny
name: Rachel, Stephan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The honeycomb iridates A2IrO3 (A=Na, Li) constitute promising candidate materials to realize the Heisenberg-Kitaev model (HKM) in nature, hosting unconventional magnetic as well as spin liquid phases. Recent experiments suggest, however, that Li2IrO3 exhibits a magnetically ordered state of incommensurate spiral type which has not been identified in the HKM. We show that these findings can be understood in the context of an extended Heisenberg-Kitaev scenario satisfying all tentative experimental evidence: (i) the maximum of the magnetic susceptibility is located inside the first Brillouin zone, (ii) the Curie-Weiss temperature is negative relating to dominant antiferromagnetic fluctuations, and (iii) significant second-neighbor spin-exchange is involved.
description: 5 pages, 5 figures, selected as an Editors' suggestion
Weak-strong uniqueness and energy-variational solutions for a class of viscoelastoplastic fluid models
Creators: name: Eiter, Thomas
name: Hopf, Katharina
name: Lasarzik, Robert
Publisher: name: Boston, Mass. : De Gruyter
Year: 2022
Subjects: subject: nonsmooth potential
subject: relative energy inequality
subject: vanishing stress diffusion
subject: viscoelastic fluids
subject: viscoplasticity
subject: weak-strong uniqueness
subject: 510

description: We study a model for a fluid showing viscoelastic and viscoplastic behavior, which describes the flow in terms of the fluid velocity and a symmetric deviatoric stress tensor. This stress tensor is transported via the Zaremba-Jaumann rate, and it is subject to two dissipation processes: one induced by a nonsmooth convex potential and one by stress diffusion. We show short-time existence of strong solutions as well as their uniqueness in a class of Leray-Hopf-type weak solutions satisfying the tensorial component in the sense of an evolutionary variational inequality. The global-in-time existence of such generalized solutions has been established in a previous work. We further study the limit when stress diffusion vanishes. In this case, the above notion of generalized solutions is no longer suitable, and we introduce the concept of energy-variational solutions, which is based on an inequality for the relative energy. We derive general properties of energy-variational solutions and show their existence by passing to the nondiffusive limit in the relative energy inequality satisfied by generalized solutions for nonzero stress diffusion.
A perturbative and gauge invariant treatment of gravitational wave memory
Creators: name: Bieri, Lydia
name: Garfinkle, David
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a perturbative treatment of gravitational wave memory. The coordinate invariance of Einstein's equations leads to a type of gauge invariance in perturbation theory. As with any gauge invariant theory, results are more clear when expressed in terms of manifestly gauge invariant quantities. Therefore we derive all our results from the perturbed Weyl tensor rather than the perturbed metric. We derive gravitational wave memory for the Einstein equations coupled to a general energy-momentum tensor that reaches null infinity.
description: Typos corrected. Discussion extended