cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Possible studies at the first stage of the NICA collider operation with polarized and unpolarized proton and deuteron beams
Creators: name: Abramov, V. V.
name: Aleshko, A.
name: Baskov, V. A.
name: Boos, E.
name: Bunichev, V.
name: Dalkarov, O. D.
name: El-Kholy, R.
name: Galoyan, A.
name: Guskov, A. V.
name: Kim, V. T.
name: Kokoulina, E.
name: Koop, I. A.
name: Kostenko, B. F.
name: Kovalenko, A. D.
name: Ladygin, V. P.
name: Larionov, A. B.
name: L'vov, A. I.
name: Milstein, A. I.
name: Nikitin, V. A.
name: Nikolaev, N. N.
name: Popov, A. S.
name: Polyanskiy, V. V.
name: Richard, J. -M.
name: Salnikov, S. G.
name: Shavrin, A. A.
name: Shatunov, P. Yu.
name: Shatunov, Yu. M.
name: Selyugin, O. V.
name: Strikman, M.
name: Tomasi-Gustafsson, E.
name: Uzhinsky, V. V.
name: Uzikov, Yu. N.
name: Wang, Q.
name: Zhao, Q.
name: Zelenov, A. V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: This paper contains suggestions for experiments with usage of the Spin Physics Detector (SPD) at the first stage of the SPD NICA Programme developing at JINR. Double polarized pp-, dd- and pd- collisions at c.m.s. NN energies of 3.4-10 GeV, which will be accessible at the initial stage of experiments, allow one to study spin dependence of the NN interaction, search for multiquark states at double strangeness, charm and beauty thresholds, study the short-range structure of the deuteron. Double polarized pd scattering offer a possibility to test the Standard Model through the search for T-invariance violation.
description: 140 pages, 44 figures, prepared for Physics of Elementary Particles and Atomic Nuclei
The optical to gamma-ray emission of the Crab pulsar: a multicomponent model
Creators: name: Massaro, E.
name: Campana, R.
name: Cusumano, G.
name: Mineo, T.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a multicomponent model to explain the features of the pulsed emission and spectrum of the Crab Pulsar, on the basis of X and gamma-ray observations obtained with BeppoSAX, INTEGRAL and CGRO. This model explains the evolution of the pulse shape and of the phase-resolved spectra, ranging from the optical/UV to the GeV energy band, on the assumption that the observed emission is due to more components. The first component, C_O, is assumed to have the pulsed double-peaked profile observed at the optical frequencies, while the second component, C_X, is dominant in the interpeak and second peak phase regions. The spectra of these components are modelled with log-parabolic laws and their spectral energy distributions have peak energies at 12.2 and 178 keV, respectively. To explain the properties of the pulsed emission in the MeV-GeV band, we introduce two more components, C_Ogamma and C_Xgamma, with phase distributions similar to those of C_O and C_X and log-parabolic spectra with the same curvature but peak energies at about 300 MeV and 2 GeV. This multicomponent model is able to reproduce both the broadband phase-resolved spectral behaviour and the changes of the pulse shape with energy. We also propose some possible physical interpretations in which C_O and C_X are emitted by secondary pairs via a synchrotron mechanism while C_Ogamma and C_Xgamma can originate either from Compton scattered or primary curvature photons.
description: 14 pages, 16 figures; accepted by Astronomy and Astrophysics
Portal das Revistas Científicas da Universidade Católica Portuguesa
Creators: name: Marçal, Bruno
name: Folque, Ana
name: Dias, João
name: Catanho, Cláudia
name: Perdigão, Maria
Publisher: name: Cadernos BAD
Year: 2022

description: A Universidade Católica Portuguesa (UCP) tem uma vasta tradição na publicação de revistas científicas nas diversas áreas de conhecimento que a caracterizam. Contudo, após uma análise exaustiva, foi possível constatar uma multiplicidade de contextos, nomeadamente, revistas que já tinham terminado a sua atividade editorial, sendo o suporte de publicação variável entre papel, on-line ou ambos, algumas já faziam uso de uma plataforma como o OJS ou equivalente. O seu nível de aptidão para indexação em bases de referência era igualmente muito díspar, inclusivamente em função das práticas editoriais vigentes, verificando-se ainda assimetrias no que diz respeito às suas políticas de Acesso Aberto. Este levantamento veio confirmar que a disponibilização de uma plataforma passível de ser utilizada por toda a comunidade académica, permitiria alcançar diversos objetivos estratégicos. Assim, foi definida uma linha de ação com vista à implementação de uma infraestrutura de apoio às revistas científicas editadas na UCP, sustentada num conjunto de boas práticas identificadas tanto a nível nacional como internacional. O Portal das Revistas Científicas foi apresentado publicamente em novembro de 2019, registando-se de imediato uma dinâmica muito expressiva, contando neste momento com 23 revistas, 13 das quais ativas, que disponibilizam mais de 7000 documentos em Acesso Aberto.
description: Cadernos BAD, N.º 1-2 (2021): Atas da 12ª Conferência Luso-Brasileira de Ciência Aberta (ConfOA)
Additional file 1 of Bedside prediction of intradialytic hemodynamic instability in critically ill patients: the SOCRATE study
Creators: name: Bigé, Naïke
name: Lavillegrand, Jean-Rémi
name: Dang, Julien
name: Attias, Philippe
name: Deryckere, Stéphanie
name: Joffre, Jérémie
name: Dubée, Vincent
name: Preda, Gabriel
name: Dumas, Guillaume
name: Hariri, Geoffroy
name: Pichereau, Claire
name: Baudel, Jean-Luc
name: Guidet, Bertrand
name: Maury, Eric
name: Boelle, Pierre-Yves
name: Ait-Oufella, Hafid
Publisher: name: figshare
Year: 2020
Subjects: Biochemistry
Neuroscience
Biotechnology
Environmental Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Science Policy
Mental Health

description: Additional file 1: Table S1. Comparison of SOCRATE score with 2-variable models AIC Akaike information criterion, AUROC area under the receiver operating characteristics, CRT capillary refill time, NRI net reclassification index, SOFA sequential organ failure assessment.
Invariant subspaces of elliptic systems I: pseudodifferential projections
Creators: name: Capoferri, Matteo
name: Vassiliev, Dmitri
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: primary 58J40, secondary 47A15, 35J46, 35J47, 35J48, 58J05

description: Consider an elliptic self-adjoint pseudodifferential operator $A$ acting on $m$-columns of half-densities on a closed manifold $M$, whose principal symbol is assumed to have simple eigenvalues. We show existence and uniqueness of $m$ orthonormal pseudodifferential projections commuting with the operator $A$ and provide an algorithm for the computation of their full symbols, as well as explicit closed formulae for their subprincipal symbols. Pseudodifferential projections yield a decomposition of $L^2(M)$ into invariant subspaces under the action of $A$ modulo $C^\infty(M)$. Furthermore, they allow us to decompose $A$ into $m$ distinct sign definite pseudodifferential operators. Finally, we represent the modulus and the Heaviside function of the operator $A$ in terms of pseudodifferential projections and discuss physically meaningful examples.
description: Fixed typos and edited text in accordance with referees' recommendations
title: Point source stimulation of dendrites of a pyramidal cell in Python
Creators: name: Dolic, Tomislav
Publisher: name: TU Wien
Year: 2022
Subjects: subject: electrical stimulation
subject: pyramidal cell
subject: activating function
subject: compartment model

description: Extracellular electrical stimulation of neuronal cells is an actively researched area. It is of interest under what circumstances electrical stimulation can initiate an action potential (AP). Unlike in the case of intracellular stimulation where current is injected through a patch-clamp directly into the cell, extracellular stimulation allows for a more flexible position of the electrode outside of the cell. During stimulation, zones of hyper-, as well as depolarization come into appearance which have interesting consequences for this thesis. A compartmental model of a real L5 pyramidal cell was used for testing purposes. The pyramidal neuron was reconstructed in a Python programmed framework, serving as a high-level API to the software NEURON based on the HOC interpreter language. Unlike earlier models, this one incorporated sensitive calcium ion-channel dynamics. This is a very important feature that allows studying effects like synaptic integration in the apical dendrites and calcium-driven AP-generation. In the case of intracellular stimulation, we will study the effect of calcium-driven AP-generation in the apical dendrites as well as their influence on soma AP form. In the case of extracellular stimulation, we study the influence of electrode positioning in long- and mid-range distance, as well as lateral to the soma. Regarding the latter, we focus on the influence on basal dendrites, the soma, and the axon.
Additional file 2 of Investigation of the mechanisms and experimental verification of Cuscuta-Salvia in the treatment of polycystic ovary syndrome (PCOS) via network pharmacology
Creators: name: Zhang, Ying-ying
name: Ma, Jian-xiong
name: Zhu, Yu-tian
name: Wang, Yi-xuan
name: Chen, Wang-qiang
name: Sun, Xin
name: Zhang, Wei
name: Wang, Chen-ye
name: Ding, Cai-fei
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2.
Quantum phase transitions in magnetism and superconductivity: emergent spin topology seen with neutrons
Creators: name: Buyers, W. J. L.
name: Stock, C.
name: Yamani, Z.
name: Birgeneau, R. J.
name: Liang, R.
name: Bonn, D.
name: Hardy, W. N.
name: Broholm, C.
name: Cowley, R. A.
name: Coldea, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Magnetic spins and charges interact strongly in high-temperature superconductors. New physics emerges as layers of copper oxide are tuned towards the boundary of the superconducting phase. As the pseudogap increases the characteristic spin excitation energy decreases. We show that our well-annealed YBa2Cu3O6+x (YBCO6+x) single crystals are orthorhombic and superconducting but not antiferromagnetically ordered. Near the critical concentration for superconductivity for x = 0.35 the spins fluctuate on two energy scales, one a relaxational spin response at ~2 meV and the other a slow central mode that is resolution-limited in energy (<0.08 meV) but broad in momentum. The gradual formation on cooling of a central mode over a range of momenta suggests that the spin ground state from which coherent superconducting pairing emerges may be quantum disordered. We show that YBCO6.35 adopts a homogeneous state that consists of highly-organized frozen sub-critical three-dimensional spin correlations. The continuous spin evolution indicates that a single quantum state occurs in contrast to claims from site-based probes that lightly doped YBCO undergoes a transition to antiferromagnetic Bragg order followed by a sharp transition to a cluster glass phase. For x = 0.35, where Tc = 18 K is reduced to 1/5 of Tcmax, the spin ground state is reached without a sharp transition and consists of short correlations extending over only 8 Angstrom between cells and 42 Angstrom within the planes. Polarized neutrons show the angular spin distribution to be isotropic unlike the AF insulator. Since moment is conserved we interpret this as evidence for hole-induced spin rotations rather than decay.
description: Review of spin response in cuprate superconductors YBCO underdoped to suppress Tc based on talk at International Conference on Neutron Scattering, Sydney, Australia, Nov 27-Dec 2, 2005 6 pages 6 figures
Supercriticality of the dynamo limits the memory of the polar field to one cycle
Creators: name: Kumar, Pawan
name: Karak, Bidya Binay
name: Vashishth, Vindya
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The polar magnetic field precursor is considered to be the most robust and physics-based method for the prediction of the next solar cycle strength. However, to make a reliable prediction of a cycle, is the polar field at the solar minimum of the previous cycle enough or we need the polar field of many previous cycles? To answer this question, we performed several simulations using Babcock-Leighton type flux transport dynamo models with the stochastically forced source for the poloidal field ($α$ term). We show that when the dynamo is operating near the critical dynamo transition or only weakly supercritical, the polar field of the cycle n determines the amplitude of the next several cycles (at least three). However, when the dynamo is substantially supercritical, this correlation of the polar field is reduced to one cycle. This change in the memory of the polar field from multi- to one-cycle with the increase of the super-criticality of the dynamo is independent of the importance of various turbulent transport processes in the model. We further show that when the dynamo operates near the critical, it produces frequent extended episodes of weaker activity, resembling the solar grand minima. The occurrence of grand minima is accompanied by the multi-cycle correlation of polar field. The frequency of grand minima decreases with the increase of supercriticality of the dynamo.
description: 12 pages, 7 figures and accepted in ApJ
Σύσταση κατάλληλων επιστημόνων για την αξιολόγηση επιστημονικών εργασιών
Creators: name: Βεντούρης, Αναστάσιος Παναγιώτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Δημιουργία ειδικών προφίλ
Συστήματα προτάσεων
Πρόβλημα ανάθεσης δημοσιεύσεων - κριτικών
Expert profiling
Recommender system
Paper-Reviewer assignment problem

description: Η ανάγκη της δημιουργίας προφίλ ατόμων με ορισμένες ειδικότητες έχει αυξηθεί σημαντικά τα τελευταία χρόνια, τόσο στη βιομηχανία, όσο και στον ακαδημαϊκό χώρο λόγω του μεγάλου όγκου δεδομένων. Στην ακαδημαϊκή κοινότητα, ένα τέτοιο πρόβλημα είναι η ανάθεση αξιολογητών σε άρθρα που υποβόαλλονται προς δημοσίευση σε περιοδικά και συνέδρια, όπου τόσο η εμπειρία, όσο και η αυθεντία, είναι απαραίτητες ιδιότητες στη διαδικασία ανάθεσης της κριτικής. Ωστόσο, περιορισμοί όπως η διαφορετικότητα και η σύγκρουση συμφερόντων του συγγραφέα και του αξιολογητή θα πρέπει επίσης να έχουν συμβουλευτικό ρόλο στην απόφαση της ανάθεσης. Στη διατριβή αυτή, μετατρέπουμε το πρόβλημα της πρότασης αξιολογητή για κάποια δημοσίευση σε πρόβλημα ταξινόμησης. Μελετάμε, αναπτύσσουμε και αξιολογούμε μοντέλα μηχανικής μάθησης και επεξεργασίας φυσικής γλώσσας και τα συγκρίνουμε με την αιχμή της τεχνολογίας για αυτό το πρόβλημα. Εξάγουμε τη γνώση κάθε συγγραφέα από όλες τις προηγούμενες εργασίες του και κατασκευάζουμε τo διάνυσμα λέξεων που έπειτα χρησιμοποιείται στην εκπαίδευση μοντέλων για μάθηση κατάταξης, ταξινόμηση πολλαπλών παραδειγμάτων και ταξινόμηση πολλαπλών ετικετών. Τέλος, διεξάγουμε μια ποικιλία πειραμάτων στο σύνολο δεδομένων της ACM (Association for Computing Machinery) και συζητάμε πώς μπορούμε να βελτιώσουμε περαιτέρω και να εφαρμόσουμε τον αλγόριθμο σε πραγματικές περιπτώσεις.
description: The importance of expert profiling task has increased significantly in the last years in both industry and academia due to the large amount of data. In academia, such a task is the assignment of reviewers to papers submitted to journals and conferences, where both expertise and authority are necessary for the recommendation process. However, constrains such as diversity and conflict of interest should also have an advisory role on the decision of the senior reviewer. In this thesis, we transform the paper reviewer recommendation problem into a classification problem. We study, develop and evaluate machine learning and natural language processing models and compare them with state-of-the-art solutions. We extract the knowledge of each author from all their previous papers and construct word embeddings that are then used to fit a learning-to-rank, a multi-instance and a multi-label classification model. Finally, we run a variety of experiments on the ACM (Association for Computing Machinery) dataset and discuss how we can further improve and apply our framework in real cases.
The Calabi-Yau equation on almost-Kahler four-manifolds
Creators: name: Weinkove, Ben
Publisher: name: arXiv
Year: 2006
Subjects: subject: Differential Geometry (math.DG)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics

description: Let (M, ω) be a compact symplectic 4-manifold with a compatible almost complex structure J. The problem of finding a J-compatible symplectic form with prescribed volume form is an almost-Kähler analogue of Yau's theorem and is connected to a programme in symplectic topology proposed by Donaldson. We call the corresponding equation for the symplectic form the Calabi-Yau equation. Solutions are unique in their cohomology class. It is shown in this paper that a solution to this equation exists if the Nijenhuis tensor is small in a certain sense. Without this assumption, it is shown that the problem of existence can be reduced to obtaining a C^0 bound on a scalar potential function.
description: 33 pages. Final version. Minor modifications. To appear in J. Differential Geom
Maximum complexity distribution of a monodimensional ideal gas out of equilibrium
Creators: name: Calbet, Xavier
name: Lopez-Ruiz, Ricardo
Publisher: name: arXiv
Year: 2006
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The maximum complexity momentum distribution for an isolated monodimensional ideal gas out of equilibrium is derived analytically. In a first approximation, it consists of a double non-overlapping Gaussian distribution. In good agreement with this result, the numerical simulations of a particular isolated monodimensional gas, which is abruptly pushed far from equilibrium, shows the maximum complexity distribution in the decay of the system toward equilibrium.
description: 12 pages, 4 figures
Formação de utilizadores no domínio da Ciência Aberta no contexto da implementação de um sistema CRIS
Creators: name: Marçal, Bruno
name: Folque, Ana
name: Dias, João
name: Catanho, Cláudia
name: Perdigão, Maria
Publisher: name: Cadernos BAD
Year: 2022

description: A missão das Bibliotecas de Ensino Superior (BES) tem vindo a alinhar-se com os objetivos transversais das suas instituições, em grande medida orientados para os resultados que decorrem da sua atividade ao nível da investigação, bem como para as questões relacionadas com a Ciência Aberta, promovendo a criação de novos serviços. No caso da Universidade Católica Portuguesa, a recente implementação de um sistema CRIS (Current Research Information System), o Ciência-UCP, associado à necessidade de promover junto da sua comunidade um debate participado com vista à criação de uma Política de Ciência Aberta, motivaram o desenvolvimento de algumas atividades formativas. As referidas ações de formação, estrategicamente realizadas nos meses que antecederam a entrada em produção do novo sistema de gestão de informação científica, abarcaram temas como o Acesso Aberto, Dados de Investigação, Ciência Cidadã ou mesmo a Responsabilidade na Investigação e Inovação, mas também ao nível da gestão de perfil do investigador (CIÊNCIAVITAE, ORCID, Scopus e Web of Science). De novembro de 2020 a fevereiro de 2021 foram realizadas 16 sessões de formação, dirigidas a investigadores e docentes. Como complemento a estas iniciativas, foram prestados outros serviços de apoio, tais como, sessões de esclarecimento individualizadas e a partilha de diversos materiais informativos.
description: Cadernos BAD, N.º 1-2 (2021): Atas da 12ª Conferência Luso-Brasileira de Ciência Aberta (ConfOA)
The expectant father’s experience of high risk pregnancy and antenatal hospitalization
Creators: name: Ross, Miguelle E.
Publisher: name: University of British Columbia
Year: 2008

description: Despite increasing interest in the role of the father in pregnancy, birth, and parenthood, little attention has been given to the expectant father's experience of coping with a high risk pregnancy and the hospitalization of his partner. This study was undertaken to further understanding regarding the experience of the expectant father from his own unique perspective. Using the grounded theory method, fathers' experience of the phenomenon of high risk pregnancy and antenatal hospitalization was explored, resulting in a descriptive analysis that conveyed a common conceptualization of the experience. Participants were selected from the tertiary care facility serving the province of British Columbia. Nine fathers participated in the study; they contributed a total of 16 interviews. The fathers' ages ranged from 29 to 40 years. At the time of the first interview, pregnancy gestation ranged from 24 weeks to 35 weeks. Pregnancy complications varied in nature reflective of a high risk population. Central to the fathers' descriptions were the roles they assumed in relation to their participation in the phenomenon. The two predominant roles were providing emotional care to their partner and sustaining the family's functional responsibilities. The primary theme that evolved through analysis was a process of finding a balance between these two roles. A number of factors served to influence the balance, including the support system available to the fathers, high risk condition factors, and geographical circumstance. Specific strategies were identified that contributed to the fathers' ability to cope with the experience. The findings indicated that the experience had a significant personal impact on the fathers, affecting both their emotional and physical wellbeing. Based on the findings of the study, implications for nursing practice, education, and research were identified that promote recognition of the important and unique needs of expectant fathers in high risk pregnancy and antenatal hospitalization.
Optimizing wind farms layouts for maximum energy production using probabilistic inference: Benchmarking reveals superior computational efficiency and scalability
Creators: name: Dhoot, Aditya
name: Antonini, Enrico G. A.
name: Romero, David A.
name: Amon, Cristina H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: Successful development of wind farms relies on the optimal siting of wind turbines to maximize the power capacity under stochastic wind conditions and wake losses caused by neighboring turbines. This paper presents a novel method to quickly generate approximate optimal layouts to support infrastructure design decisions. We model the quadratic integer formulation of the discretized layout design problem with an undirected graph that succinctly captures the spatial dependencies of the design parameters caused by wake interactions. On the undirected graph, we apply probabilistic inference using sequential tree-reweighted message passing to approximate turbine siting. We assess the effectiveness of our method by benchmarking against a state-of-the-art branch and cut algorithm under varying wind regime complexities and wind farm discretization resolutions. For low resolutions, probabilistic inference can produce optimal or nearly optimal turbine layouts that are within 3% of the power capacity of the optimal layouts achieved by state-of-the-art formulations, at a fraction of the computational cost. As the discretization resolution (and thus the problem size) increases, probabilistic inference produces optimal layouts with up to 9% more power capacity than the best state-of-the-art solutions at a much lower computational cost.
Quantum Broadening of k-Strings from the AdS/CFT Correspondence
Creators: name: Armoni, Adi
name: Ridgway, Jefferson M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We study the quantum broadening (width) of k-strings. We generalise an old result by Luscher, Munster and Weisz to the case of a k-string, by using the gauge/gravity correspondence. When the fundamental QCD-string is replaced by a bound state of k strings, the bound state is better described by a wrapped D-brane. We calculate the width of the k-string (the wrapped D-brane) in several AdS/CFT backgrounds by using a D-brane probe and find universally that omega_k ^2 = 1 / (2πσ_k) log R/r .
description: 13 pages, LaTex. v2: minor changes, references added. To appear in Nucl.Phys.B
Comparison of different non-linear equations and corresponding unitarization schemes
Creators: name: Selyugin, O. V.
name: Cudell, J. -R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Different forms of non-linear equations which mimic parton saturation in the non-perturbative regime are examined. These equations lead to corresponding unitarization schemes in the impact parameter representation of the hadron scattering amplitude. It is shown how specific properties of the non-linear equations reflect different features of the diffraction processes.
description: 7 pages, 5 figures, needs PoS.cls and PoSlogo, contribution to the proceedings of the International Workshop on Diffraction in High-Energy Physics "DIFFRACTION 2006", Adamantas, Milos island, Greece, September 5 - 10, 2006
Minimal length scales for the existence of local temperature
Creators: name: Hartmann, Michael J
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We review a recent approach to determine the minimal spatial length scales on which local temperature exists. After mentioning an experiment where such considerations are of relevance, we first discuss the precise definition of the existence of local temperature and its physical relevance. The approach to calculate the length scales in question considers homogenous chains of particles with nearest neighbor interactions. The entire chain is assumed to be in a thermal equilibrium state and it is analyzed when such an equilibrium state at the same time exists for a local part of it. The result yields estimates for real materials, the liability of which is discussed in the sequel. We finally consider a possibility to detect the existence or non-existence of a local thermal state in experiment.
description: review, 13 pages, 11 figures
Συγκρίνοντας τη μέθοδο λέξη – κλειδί με την τεχνική της επαναλαμβανόμενης ανάσυρσης στην εκμάθηση νέων λέξεων σε ξένη γλώσσα: Ποια είναι πιο αποτελεσματική;
Creators: name: Χατζηανδρέου, Άννα Ανδρέα
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: εκμάθηση νέων λέξεων
ξένη γλώσσα
επαναλαμβανόμενη ανάσυρση
μέθοδος «λέξη – κλειδί»
Learning new words
foreign language
retrieval practice
keyword method

description: Μία από τις μεγαλύτερες προκλήσεις στην εκμάθηση ξένης γλώσσας είναι η απόκτηση λεξιλογίου. Το γεγονός αυτό καθιστά την μελέτη των μεθόδων που θα εξασφαλίσουν γρήγορη απόκτηση λέξεων στην ξένη γλώσσα, πολύ σημαντική. Στόχος της παρούσας έρευνας ήταν να αντιπαραθέσει δυο μεθόδους εκμάθησης ξένης γλώσσας και να διερευνήσει ποιά από τις δυο μεθόδους είναι πιο αποτελεσματική στην εκμάθηση νέου λεξιλογίου σε μια ξένη γλώσσα, συγκεκριμένα στην αγγλική. Οι μέθοδοι εκμάθησης που αντιπαρατέθηκαν είναι: η τεχνική της επαναλαμβανόμενης ανάσυρσης (retrieval practice), μιας τεχνικής που βασίζεται στην διεξαγωγή επαναλαμβανόμενων εξετάσεων με σκοπό την εκμάθηση του υλικού και η μέθοδος «λέξη-κλειδί» (keyword method), μια καλά εδραιωμένη τεχνική με βάση τις εικόνες για την εξασφάλιση λεξιλογίου. Ειδικότερα, διερευνήθηκε ποιά από τις δυο οδηγεί τόσο σε άμεση απόκτηση περισσότερων νέων λέξεων στα αγγλικά όσο και σε μακροχρόνια μάθηση που είναι παγιωμένη και ανθεκτική σε βάθος χρόνου. Στο δείγμα συμμετείχαν 63 φοιτητές του Τμήματος Ψυχολογίας του Αριστοτελείου Πανεπιστήμιου Θεσσαλονίκης. Τα αποτελέσματα της έρευνας έδειξαν ότι η μέθοδος «λέξη – κλειδί» είναι πιο αποτελεσματική στην άμεση απόκτηση νέων λέξεων. Ωστόσο, καμία από τις δυο μεθόδους δεν επέφερε στατιστικά σημαντικά αποτελέσματα στην μακρόχρονη συγκράτηση των αγγλικών λέξεων.
description: One of the biggest challenges in learning a foreign language is to acquire a vocabulary. This makes studying methods that will ensure fast acquisition of foreign language words, very important. The purpose of this research was to contrast two methods of foreign language learning and to explore which of the two methods is more effective in learning a new vocabulary in a foreign language, namely English. The recited methods of learning are: the technique of retrieval practice, a technique based on conducting recurrent material learning exams and the keyword method, a well-established technique based on images to obtain vocabulary. In particular, it has been investigated which of the two leads both to the immediate acquisition of more new words in English and to long-term learning that is well-established and durable in the long run. The sample was attended by 63 students from the Department of Psychology of the Aristotle University of Thessaloniki. The results of the survey showed that the keyword method is more effective in acquiring new words. However, none of the two methods produced statistically significant results in the long-term containment of English words.
implementação de um sistema CRIS
Creators: name: Marçal, Bruno
name: Folque, Ana
name: Dias, João
name: Catanho, Cláudia
name: Perdigão, Maria
Publisher: name: Cadernos BAD
Year: 2022

description: A Universidade Católica Portuguesa, na qualidade de Research University, implementou um sistema CRIS (Current Research Information System), denominado CiênciaUCP. Destacamos, neste documento, alguns aspetos que resultaram do processo de implementação, bem como as funcionalidades que a plataforma disponibiliza. São referenciadas as abordagens à gestão da produção científica, a interoperabilidade com sistemas internos e externos à instituição, a gestão de teses e dissertações defendidas na UCP e a obtenção de métricas e indicadores. Por fim, são referidos outros módulos disponíveis na plataforma, mas que ainda se encontram em fase de desenvolvimento, como dos dados de investigação, projetos/financiamento e produção científica não-textual.
description: Cadernos BAD, N.º 1-2 (2021): Atas da 12ª Conferência Luso-Brasileira de Ciência Aberta (ConfOA)
Improved analytical bounds on delivery times of long-distance entanglement
Creators: name: Coopmans, Tim
name: Brand, Sebastiaan
name: Elkouss, David
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The ability to distribute high-quality entanglement between remote parties is a necessary primitive for many quantum communication applications. A large range of schemes for realizing the long-distance delivery of remote entanglement has been proposed, both for bipartite and multipartite entanglement. For assessing the viability of these schemes, knowledge of the time at which entanglement is delivered is crucial. Specifically, if the communication task requires multiple remote-entangled quantum states and these states are generated at different times by the scheme, the earlier states will need to wait and thus their quality will decrease while being stored in an (imperfect) memory. For the remote-entanglement delivery schemes which are closest to experimental reach, this time assessment is challenging, as they consist of nondeterministic components such as probabilistic entanglement swaps. For many such protocols even the average time at which entanglement can be distributed is not known exactly, in particular when they consist of feedback loops and forced restarts. In this work, we provide improved analytical bounds on the average and on the quantiles of the completion time of entanglement distribution protocols in the case that all network components have success probabilities lower bounded by a constant. A canonical example of such a protocol is a nested quantum repeater scheme which consists of heralded entanglement generation and entanglement swaps. For this scheme specifically, our results imply that a common approximation to the mean entanglement distribution time, the 3-over-2 formula, is in essence an upper bound to the real time. Our results rely on a novel connection with reliability theory.
Η θέση και ο ρόλος της χριστιανικής τέχνης στη σχολική θρησκευτική αγωγή
Creators: name: Καραβάς, Ανδρέας Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Χριστιανική τέχνη
Θρησκευτική αγωγή
Βιωματικότητα
Christian art
Religious education
Experientiality

description: Στις ημέρες μας η χρήση της εικόνας και γενικότερα της εποπτείας συνιστά αναπόσπαστο κομμάτι των εκφάνσεων της ανθρώπινης δραστηριότητας, η αξιοποίηση της χριστιανικής τέχνης και των έργων της στον εκπαιδευτικό τομέα αποτελεί, σαφέστατα, ένα από τα καίρια ζητήματα που απασχολούν τον σύγχρονο εκπαιδευτικό. Σκοπός της εργασίας αυτής είναι να αναδείξει και να αποδείξει τον ιδιαίτερο διδακτικό ρόλο αλλά και την εξέχουσα παιδευτική θέση της χριστιανικής τέχνης μέσα στην σχολική θρησκευτική αγωγή ως διδακτικό μέσο, ώστε να συμβάλλει δυναμικά στην αναμόρφωση της διδασκαλίας του μαθήματος. Παράλληλα, θέλει να αναδείξει την χρηστικότητα της χριστιανικής τέχνης στον συγχρονο άνθρωπο και την κοινωνία σαν μέσο μεταλαμπάθευσης και επαφής του ανθρωπου με τον Θεό και την πνευματική σωτηρία του. Η βιωματικότητα και η διάδραση της τέχνης μπορει στον συγχρονο ανθρωπο να δώσει νέα προοπτική κατανόησης και επαφής με τα μηνύματα της χριστιανικής πίστης, τα οποία μέσω του Ορθού λόγου μπορεί να φαίνονται απόμακρα και δυσνόητα σε μια εποχή που κυριαρχεί η ταχύτητα της πληροφορίας και η εικόνα. Παρατίθενται δίαφορα αποσπάσματα από το διδακτικό βιβλίο Πρωτοβάθμιας και Δευτεροβάθμιας αξιολογώντας της χρήση διαφόρων μορφων της χριστιανικής τέχνης καθως και τη λειτουργικότητά τους στην παιδαγωγική διαδικασία.
description: At a time when the use of imagery and supervision in general is an integral part of the manifestations of human activity, the exploitation of Christian art and its works in the field of education is clearly one of the key issues that concern the modern educator. The purpose of this work is to highlight and demonstrate the particular teaching role and the prominent educational position of Christian art in school religious education as a teaching tool in order to contribute dynamically to the reform of the teaching of the lesson. At the same time, the current study aims to highlight the usefulness of Christian art in modern man and in society as a means of transmitting and connecting man with God and spiritual salvation. The experiential character and interaction of art can give modern man a new perspective of understanding and contact with messages of Christian faith, which through Righteous Discourse may seem distant and obscure in an age dominated by the speed of information and image. Various excerpts from the Primary and Secondary textbooks are outlined, assessing the use of numerous forms of Christian art and their functionality in the pedagogical process.
Local drag of a slender rod parallel to a plane wall in a viscous fluid
Creators: name: Koens, Lyndon
name: Montenegro-Johnson, Thomas D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: The viscous drag on a slender rod by a wall is important to many biological and industrial systems. This drag critically depends on the separation between the rod and the wall and can be approximated asymptotically in specific regimes, namely far from, or very close to, the wall, but is typically determined numerically for general separations. In this note we determine an asymptotic representation of the local drag for a slender rod parallel to a wall which is valid for all separations. This is possible through matching the behaviour of a rod close to the wall and a rod far from the wall. We show that the leading order drag in both these regimes has been known since 1981 and that they can used to produce a composite representation of the drag which is valid for all separations. This is in contrast to a sphere above a wall, where no simple uniformly valid representation exists. We estimate the error on this composite representation as the separation increases, discuss how the results could be used as resistive-force theory and demonstrate their use on a two-hinged swimmer above a wall.
description: 25 pages 6 figures
Quantum criticality and minimal conductivity in graphene with long-range disorder
Creators: name: Ostrovsky, P. M.
name: Gornyi, I. V.
name: Mirlin, A. D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We consider the conductivity $σ_{xx}$ of graphene with negligible intervalley scattering at half filling. We derive the effective field theory, which, for the case of a potential disorder, is a symplectic-class $σ$-model including a topological term with $θ=π$. As a consequence, the system is at a quantum critical point with a universal value of the conductivity of the order of $e^2/h$. When the effective time reversal symmetry is broken, the symmetry class becomes unitary, and $σ_{xx}$ acquires the value characteristic for the quantum Hall transition.
description: 4 pages, 1 figure
Η αστική ιατρική ευθύνη ως περίπτωση εφαρμογής του άρθρου 8 ν. 2251/1994 για την ευθύνη του παρέχοντος υπηρεσίες
Creators: name: Κοκόλης, Ευθύμιος Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Αστική ιατρική ευθύνη
Ευθύνη παρέχοντος υπηρεσίες
Ιατρικό σφάλμα
Civil medical liability
Liability of the service provider
Medical malpractise

description: Βασικό αντικείμενο της παρούσας διπλωματικής εργασίας είναι τα τεκμήρια παρανομίας, υπαιτιότητας και αιτιώδους συνδέσμου που καθιερώνονται με το άρθρο 8 ν. 2251/1994 και συγκεκριμένα η επισκόπηση της λειτουργίας αυτών στο πεδίο της ιατρικής ευθύνης, που είναι και ο κατεξοχήν χώρος στον οποίο βρίσκουν εφαρμογή στη νομολογία. Στο πρώτο μέρος της εργασίας εξετάζεται η νομική φύση της υποχρέωσης του γιατρού να παράσχει ιατρική φροντίδα. Στο δεύτερο μέρος της εργασίας αναλύονται η έννοια και τα κριτήρια εξειδίκευσης του ιατρικού σφάλματος, ενώ επιχειρείται και η συστηματική ένταξή του στο δίκαιο της αστικής ευθύνης. Στο βασικό (τρίτο) τμήμα της εργασίας, που είναι τα τεκμήρια του άρθρου 8 ν. 2251/1994, ζητούμενο είναι η συσχέτιση της καθιερούμενης με αυτά ευθύνης με τα γενικώς κρατούντα στην ενδοσυμβατική και την αδικοπρακτική ευθύνη και η ανάδειξη της αποδεικτικής διευκόλυνσης που παρέχουν τα τεκμήρια σε σχέση με το γενικό σύστημα ευθύνης του ΑΚ. Επιπλέον, η ρύθμιση για την ευθύνη περισσοτέρων στο άρθρο 8 § 6 ν. 2251/1994, κατέστησε αναγκαία τη συσχέτιση της συγκεκριμένης διάταξης με την κοινή πράξη περισσοτέρων κατ’ άρθρο 926 εδ. 1 α’ ΑΚ.
description: The main object of the present dissertation is the presumptions of illegality, fault and causal link established by article 8 of law 2251/1994 and specifically the review of their operation in the field of medical liability, which is the pre-eminent area in which they apply in case law. The first part of the work examines the legal nature of the doctor's obligation to provide medical care. In the second part, the concept and the criteria for determining medical malpractise are analyzed, while its systematic integration in the law of civil liability is attempted. In the basic (third) part of the work, which is referred to the presumptions of article 8 of law 2251/1994, the aim is the correlation of the liability that they establish with the generally held in the contractual and tortious liability and the highlighting of the probative facility provided by the presumptions in relation to the general system of responsibility of the Civil Code. Moreover, the regulation for the joint liability in article 8 § 6 of law 2251/1994, made necessary the correlation of the specific provision with the joint act as provided in article 926 sub-paragraph 1a of the Civil Code.
Speckle Observations of TESS Exoplanet Host Stars. II. Stellar Companions at 1-1000 AU and Implications for Small Planet Detection
Creators: name: Lester, Kathryn V.
name: Matson, Rachel A.
name: Howell, Steve B.
name: Furlan, Elise
name: Gnilka, Crystal L.
name: Scott, Nicholas J.
name: Ciardi, David R.
name: Everett, Mark E.
name: Hartman, Zachary D.
name: Hirsch, Lea A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present high angular resolution imaging observations of 517 host stars of TESS exoplanet candidates using the `Alopeke and Zorro speckle cameras at Gemini North and South. The sample consists mainly of bright F, G, K stars at distances of less than 500 pc. Our speckle observations span angular resolutions of ~20 mas out to 1.2 arcsec, yielding spatial resolutions of <10 to 500 AU for most stars, and our contrast limits can detect companion stars 5-9 magnitudes fainter than the primary at optical wavelengths. We detect 102 close stellar companions and determine the separation, magnitude difference, mass ratio, and estimated orbital period for each system. Our observations of exoplanet host star binaries reveal that they have wider separations than field binaries, with a mean orbital semi-major axis near 100 AU. Other imaging studies have suggested this dearth of very closely separated binaries in systems which host exoplanets, but incompleteness at small separations makes it difficult to disentangle unobserved companions from a true lack of companions. With our improved angular resolution and sensitivity, we confirm that this lack of close exoplanet host binaries is indeed real. We also search for a correlation between planetary orbital radii vs. binary star separation, but given the very short orbital periods of the TESS planets, we do not find any clear trend. We do note that in exoplanet systems containing binary host stars, there is an observational bias against detecting Earth-size planet transits due to transit depth dilution caused by the companion star.
description: Accepted to AJ
Additional file 1: of Genetic basis of heterosis for yield and yield components explored by QTL mapping across four genetic populations in upland cotton
Creators: name: Li, Cong
name: Zhao, Tianlun
name: Yu, Hurong
name: Li, Cheng
name: Deng, Xiaolei
name: Dong, Yating
name: Zhang, Fan
name: Zhang, Yi
name: Mei, Lei
name: Chen, Jinhong
name: Zhu, Shuijin
Publisher: name: figshare
Year: 2018
Subjects: subject: Space Science
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Evolutionary Biology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Mental Health
subject: Plant Biology

description: Table S1. Phenotypic variation of yield and yield components for the parents (PDF 105â kb)
plano de dados abertos do município de Lisboa e a sua adequação às disposições legais e regulamentares acerca da partilha de dados abertos
Creators: name: Xavier Da Silva, Gabriela
name: Rodrigues De Oliveira, Elem
name: Guerra, Pedro
name: Lopes De Araujo Soares, Raquel
Publisher: name: Cadernos BAD
Year: 2022

description: O trabalho aborda a questão dos dados abertos na administração pública municipal. Tem como objetivos identificar os pontos de contacto entre o Plano de Dados Abertos para a Cidade de Lisboa (PDACL) e a legislação portuguesa acerca de dados abertos e verificar se o PDACL inclui orientações sobre segurança dos dados. A pesquisa consiste em uma investigação documental numa abordagem qualitativa. Concluímos que o PDACL se adequa às disposições legais portuguesas acerca da partilha de dados abertos e viabiliza a disponibilização de dados de apoio à decisão, em formatos e com licenças para acesso à informação. Contudo, verificámos que do PDACL não constavam orientações para segurança dos dados, não tendo sido localizados os planos de dados abertos elaborados para os anos posteriores a 2017.
description: Cadernos BAD, N.º 1-2 (2021): Atas da 12ª Conferência Luso-Brasileira de Ciência Aberta (ConfOA)
Monte Carlo Modeling of Spin-polarized Photoemission from p-doped GaAs Activated to Negative Electron Affinity
Creators: name: Chubenko, Oksana
name: Karkare, Siddharth
name: Dimitrov, Dimitre
name: Bae, Jai Kwan
name: Cultrera, Luca
name: Bazarov, Ivan
name: Afanasev, Andrei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: The anticorrelation between quantum efficiency (QE) and electron spin polarization (ESP) from a p-doped GaAs activated to negative electron affinity (NEA) is studied in detail using an ensemble Monte Carlo approach. The photoabsorption, momentum and spin relaxation during transport, and tunnelling of electrons through the surface potential barrier are modeled to identify fundamental mechanisms, which limit the efficiency of GaAs spin-polarized electron sources. In particular, we study the response of QE and ESP to various parameters such as the photoexcitation energy, doping density, and electron affinity level. Our modeling results for various transport and emission characteristics are in a good agreement with available experimental data. Our findings show that the behaviour of both QE and ESP at room temperature can be fully explained by the bulk relaxation mechanisms and the time which electrons spend in the material before being emitted.