cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Additional file 1 of Understanding hospital rehabilitation using electronic health records in patients with and without COVID-19
Creators: name: Georgiev, Konstantin
name: Doudesis, Dimitrios
name: McPeake, Joanne
name: Mills, Nicholas L
name: Fleuriot, Jacques
name: Shenkin, Susan D
name: Anand, Atul
Publisher: name: figshare
Year: 2024
Subjects: subject: Space Science
subject: Medicine
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Mental Health
subject: Computational Biology

description: Supplementary Material 1
Multidimensional cosmological models: cosmological and astrophysical implications and constraints
Creators: name: Guenther, U.
name: Starobinsky, A.
name: Zhuk, A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate four-dimensional effective theories which are obtained by dimensional reduction of multidimensional cosmological models with factorizable geometry and consider the interaction between conformal excitations of the internal space (geometrical moduli excitations) and Abelian gauge fields. It is assumed that the internal space background can be stabilized by minima of an effective potential. The conformal excitations over such a background have the form of massive scalar fields (gravitational excitons) propagating in the external spacetime. We discuss cosmological and astrophysical implications of the interaction between gravexcitons and four-dimensional photons as well as constraints arising on multidimensional models of the type considered in our paper. In particular, we show that due to the experimental bounds on the variation of the fine structure constant, gravexcitons should decay before nucleosynthesis starts. For a successful nucleosynthesis the masses of the decaying gravexcitons should be m>10^4 GeV. Furthermore, we discuss the possible contribution of gravexcitons to UHECR. It is shown that, at energies of about 10^{20}eV, the decay length of gravexcitons with masses m>10^4 GeV is very small, but that for m <10^2 GeV it becomes much larger than the Greisen-Zatsepin-Kuzmin cut-off distance. Finally, we investigate the possibility for gravexciton-photon oscillations in strong magnetic fields of astrophysical objects. The corresponding estimates indicate that even the high magnetic field strengths of magnetars are not sufficient for an efficient and copious production of gravexcitons.
description: 16 pages, LaTeX2e, minor changes, improved references, to appear in PRD
TAʼLIM METODLARINI TARIXIY MEROSNI O'RGANISHDAGI ROLI
Creators: name: Ortiqova Xayriniso Ziyadulla qizi
Publisher: name: Zenodo
Year: 2025

description: Annotatsiya: Maqolada maktab va oliy taʼlim tizimida Temuriylar davrining o‘rganilishi, tarixiy ma'lumotlarni o‘qitishda yangicha yondashuvlar, Amir Temur va Temuriylar davrining taʼlim dasturlariga kiritilishi, zamonaviy ilmiy tadqiqotlar va ularning taʼlimdagi ahamiyati yoritib berilgan. Tarix, madaniyat, arxitektura va san'at fanlarini o`qitilishida va Temuriylar davrini o‘rganishda yangi texnologiyalardan foydalanishning axamiyati katta. Maqolada Multidistiplinar yondashuv (digital arxivlar, virtual muzeylar) bayon etilgan.
Adaptive Dispersion Compensation for Remote Fiber Delivery of NIR Femtosecond Pulses
Creators: name: Lee, S. H.
name: Cavalieri, A. L.
name: Fritz, D. M.
name: Myaing, M.
name: Reis, D. A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We report on remote delivery of 25 pJ broadband near-infrared femtosecond light pulses from a Ti:sapphire laser through 150 meters of single-mode optical fiber. Pulse distortion due to dispersion is overcome with pre-compensation using adaptive pulse shaping techniques, while nonlinearities are mitigated using an SF10 rod for the final stage of pulse compression. Near transform limited pulse duration of 130 fs is measured after the final compression.
description: 3 pages, 4 figures
Η τεχνητή Νοημοσύνη και ο νέος ΓΚΠΔ στο πλαίσιο των ηλεκτρονικών συναλλαγών και των εφαρμογών τους
Creators: name: Παναγόπουλος, Ζώης Διονυσίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2021
Subjects: Τεχνητή Νοημοσύνη
Προσωπικά Δεδομένα
Ηλεκτρονικές Συναλλαγές
Γενικός Κανονισμός Προστασίας Δεδομένων
artificial intelligence
personal data
electronic transaction
G.D.P.R.

description: Τα τελευταία χρονολογικά έτη η τεχνολογία και δη η τεχνητή νοημοσύνη(artificial intelligence), οι εφαρμογές των νευρωνικών δικτύων (μηχανική ομιλία, αυτόματη οδήγηση) και η μηχανική εκμάθηση (machine learning) εξελίσσονται με ταχύτατη ανάπτυξη. Αδιαμφισβήτητα, η ευρεία τούτη χρήση επιφέρει ως επί το πλείστον θετικές αλλαγές τόσο στην καθημερινότητά μας, όσο και στη συνολική μας ζωή εν γένει, καθώς η χρήση κυρίως της τεχνητής νοημοσύνης συμβάλλει ενδεικτικά στη βελτίωση της υγειονομικής μας περίθαλψης, κυρίως με την αποτελεσματικότερη πρόληψη ασθενειών, -μέσω της έγκαιρης και έγκυρης διάγνωσης-, αλλά και στην πιο άμεση, εγγύτερη και ασφαλή εξυπηρέτηση των καταναλωτών σε όλο τον κόσμο. Ωστόσο, αρκετοί είναι οι ενδεχόμενοι κίνδυνοι σε σχέση με την ευρεία και ενδεχομένως ενίοτε ανεξέλεγκτη χρήση της τεχνητής νοημοσύνης ,καθώς τα προβλήματα που ανακύπτουν είναι ποικίλα τόσο σε τεχνικό, ηθικό, πολιτικό όσο και νομικό επίπεδο. Στην παρούσα μελέτη θα αναλύσουμε τους δυνητικούς κινδύνους που μπορεί να επιφέρει η τεχνητή νοημοσύνη στην προστασία των προσωπικών δικαιωμάτων των πολιτών εν γενεί και δη των ηλεκτρονικά συναλλασσόμενων καταναλωτών, καθώς στην σύγχρονη κοινωνία της πληροφορίας η ορθή προστασία των δεδομένων προσωπικού χαρακτήρα εμφανίζεται παραπάνω από επιβεβλημένη
description: In recent years, technology, namely artificial intelligence, neural network applications (machine speech, automatic driving) and machine learning (machine learning) are evolving rapidly. Undoubtedly, this widespread use brings about mostly positive changes both in our daily life and in our overall life in general, as the use of mainly artificial intelligence contributes significantly to the improvement of our health care, mainly with the most effective prevention of diseases, -through timely and valid diagnosis-, but also in the most immediate, closest and safest service to consumers around the world. However, there are many potential dangers to the widespread and possibly uncontrolled use of artificial intelligence, as the problems that arise are varied both technically, morally, politically and legally. In the present study we will analyze the potential risks that artificial intelligence can pose to the protection of the personal rights of citizens in general and electronic consumers in particular, as in the modern information society the proper protection of personal data appears more than imperative
Current Situations and Improvement Scheme of Outlook for Layer Industry
Creators: name: Jeon, Sanggon
name: Jeon, Sanggon
Publisher: name: Unknown
Year: 2002
Subjects: Demand and Price Analysis

description: The purpose of this paper is to examine the methodology of agricultural outlook, particularly focusing on the layer outlook. It is illustrating the way how to do the layer outlook based on the biological process from the GPS(Grand Parent Stock) stage to the egg production stage. Methodology to analyse the data and to interpret the survey results are explained in detail. But there are many limitations such as data inconsistency, interpretation of the farmers' intention, insufficient demand side analysis etc. Several improvement schemes to settle those limitations are provided in the conclusion.
Change and obduracy in university teaching practices: tracing agency in professional development
Creators: name: Hannon, John
Publisher: name: La Trobe
Year: 2022
Subjects: classificationCode: 39
subject: Education
classificationCode: 3901
subject: Curriculum and pedagogy
classificationCode: 3903
subject: Education systems

description: Research into effectiveness of teaching practices and professional development invites questions of teaching and learning change: how it takes effect and is accounted for, and where its agency is claimed and contested across a range of institutional, disciplinary and pedagogical actors. This article investigates change in teaching practices and professional development through the notion of obduracy (Law, 2003): ordered arrangements that persist in the background and surface in a process of change. In focussing on practice as the object of inquiry, this study is part of a shift away from the study of professional learning drawing on individualist, cognitive traditions towards practice-oriented understandings of change and agency as an effect of social and material arrangements. The setting for this study of teaching practice is two disciplinary academic collectives, or workgroups, in one Australian university. Rather than approaching change as a human-centred and intentional process, the method of sociomaterial tracing was applied to teaching practice undergoing an institutional change process. The study highlights the process in which change is assembled, resisted or accomplished through heterogeneous networks of curriculum, discourses, technologies, and policies. Teaching and learning change, it is argued, involves recognising how obduracy is embedded in distinct networks across the university. The contribution of this study is to draw attention to the agentic role of materials and spaces in the negotiation and stabilisation of teaching practices and in approaches to professional development.
Chiral approach to nuclear matter: Role of explicit short-range NN-terms
Creators: name: Fritsch, S.
name: Kaiser, N.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We extend a recent chiral approach to nuclear matter by including the most general (momentum-independent) NN-contact interaction. Iterating this two-parameter contact-vertex with itself and with one-pion exchange the emerging energy per particle exhausts all terms possible up-to-and-including fourth order in the small momentum expansion. The equation of state of pure neutron matter, $\bar E_n(k_n)$, can be reproduced very well up to quite high neutron densities of $ρ_n=0.5\fmd$ by adjusting the strength of a repulsive $nn$-contact interaction. Binding and saturation of isospin-symmetric nuclear matter is a generic feature of our perturbative calculation. Fixing the maximum binding energy per particle to $-\bar E(k_{f0})= 15.3 $MeV we find that any possible equilibrium density $ρ_0$ lies below $ρ_0^{\rm max}=0.191\fmd$. The additional constraint from the neutron matter equation of state leads however to a somewhat too low saturation density of $ρ_0 =0.134 \fmd$. We also investigate the effects of the NN-contact interaction on the complex single-particle potential $U(p,k_f)+i W(p,k_f)$. We find that the effective nucleon mass at the Fermi-surface is bounded from below by $M^*(k_{f0}) \geq 1.4 M$. This property keeps the critical temperature of the liquid-gas phase transition at somewhat too high values $T_c \geq 21 $MeV. The downward bending of the asymmetry energy $A(k_f)$ above nuclear matter saturation density is a generic feature of the approximation to fourth order. Altogether, there is within this complete fourth-order calculation no "magic" set of adjustable short-range parameters with which one could reproduce simultaneously and accurately all semi-empirical properties of nuclear matter.
description: 24 pages, 12 figures, accepted for publication in: Eur. Phys. J. A
Comparison of Korean and Japanese Agricultural Policies under the WTO Regime
Creators: name: Kim, Jeongho
name: Kim, Jeongho
Publisher: name: Unknown
Year: 2002
Subjects: Agricultural and Food Policy

description: Under the regime of WTO, the directions for major countries' agricultural policies enter on two aspects such as global standard and national specialty. First, the aspect of global standard is drawn from the reflection process on each country's agricultural policy toward an ideology of WTO Agricultural Agreement. Second, national specialty of each country's agricultural policy stems from an effort for solving inherent agricultural problems under the stream of global universality. Agriculture and agricultural policies in Korea and Japan are rapidly changing with the stream of international affairs. In short, Korea and Japan were commonly tried to cope with the defensive position on the Uruguay Round under the globalization trend based on heterogeneous feeling toward the Western agriculture. Now, they are actively trying to throw into relief each country's specialty of agriculture in showing true perception of the global community in the recent WTO negotiation process.
Computer-mediated Empathy
Creators: name: Lee, Sang Won
Publisher: name: arXiv
Year: 2019
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: While novel social networks and emerging technologies help us transcend the spatial and temporal constraints inherent to in-person communication, the trade-off is a loss of natural expressivity. While empathetic interaction is already challenging in in-person communication, computer-mediated communication makes such empathetically rich communication even more difficult. Are technology and intelligent systems opportunities or threats to more empathic interpersonal communication? Realizing empathy is suggested not only as a way to communicate with others but also to design products for users and facilitate creativity. In this position paper, I suggest a framework to breakdown empathy, introduce each element, and show how computing, technologies, and algorithms can support (or hinder) certain elements of the empathy framework.
Direction of Development in Korean Food Industry
Creators: name: Kim, Jaesoo
name: Kim, Jaesoo
Publisher: name: Unknown
Year: 2002
Subjects: Food Consumption/Nutrition/Food Safety

description: The proportion of the food industry was 4.9 percent over GDP in 2000 in Korea, while that of the manufacturing industry was accounted for 15.7 percent. In this sense the development of food industry is important for both agricultural and manufacturing sectors in Korea. The development policy for food industry can be summarized as follows; 1) sanitary and safety for food need to be emphasized and improved for consumers, 2) regional processing industry for traditional Korean food should be stressed to increase demand for domestic agricultural porducts, 3) government role for development of food industry should be made to increase competition in food industry, not to regulate the industry, and 4) administrative reform within government should be made in terms of development and sanitary aspects.
U.S. 2002 Farm Bill in Comparison with the 1996 Farm Bill
Creators: name: Choi, Jungsup
name: Choi, Jungsup
Publisher: name: Unknown
Year: 2002
Subjects: Community/Rural/Urban Development

description: In the United States, the Farm Security and Rural Investment Act of 2002 (2002 Farm Bill) has been signed into law on May 13, 2002. The law has 10 titles. The 2002 Farm Bill covers from 2002 to 2007. Some features of the bill include various direct payment programs to farmers, maintaining the marketing loan program, and a new dairy support program. This research material summarizes the features of 2002 Farm Bill in comparison with the 1996 Farm Bill features. Since the directions of the U.S. agricultural policy has direct and indirect impacts on Korean agriculture, we have great interest in the changes of American farm policy.
Teaching intonation to Greek EFL learners: assessing the effectiveness of audiolingualism vs the communicative approach
Creators: name: Σαββίδου, Ειρήνη Σολομώντα
Publisher: name: Aristotle University of Thessaloniki
Year: 2021
Subjects: επιτονισμός αγγλικής γλώσσας
ελληνική τάξη αγγλικών
μέθοδοι διδασκαλίας επιτονισμού
English intonation teaching
Greek EFL learners
audiolingualism and communicative approach

description: Η διατριβή μου πραγματεύεται την έρευνα που διεξάχθηκε σε ιδιωτικό φροντιστήριο ξένων γλωσσών με στόχο την συλλογή δεδομένων ως προς την εκμάθηση του επιτονισμού της αγγλικής γλώσσας για τις ερωτήσεις ‘Wh-’ και για τον τονισμό προτάσεων ‘sentence stress’, των Ελλήνων μαθητών. Η έρευνα είχε ως στόχο τη σύγκριση δύο διαφορετικών μεθόδων διδασκαλίας (Communicative Approach- Audiolingualism) με σκοπό να εντοπιστεί η καταλληλότερη. Στην έρευνα συμμετείχαν τρεις ομάδες μαθητών εκ των οποίων οι δύο αποτέλεσαν τις πειραματικές ομάδες ενώ η τρίτη αντιπροσώπευσε την ομάδα ελέγχου. Οι μαθητές ηχογραφήθηκαν δύο φορές, στην αρχή της έρευνας και έπειτα από δύο μήνες διδασκαλίας. Οι ηχογραφήσεις τους αξιολογήθηκαν ως προς το αν ο λόγος τους είχε χαρακτηριστική προφορά ή πλησίαζε το πρότυπο ενός φυσικού ομιλητή της αγγλικής. Δύο φυσικοί ομιλητές της αγγλικής γλώσσας ανέλαβαν να αξιολογήσουν τους μαθητές με την χρήση μιας κλίμακας Likert από 1 έως 9 (1 = απουσία προφοράς, 9 = ιδιαίτερα έντονη προφορά)
description: My dissertation regards the research carried out in a private language institution in order to collect data on the teaching of English intonation in wh- questions and sentence stress in a Greek EFL classroom. The research aimed to the comparison of two different methods of teaching, (Communicative Approach and Audiolingualism) in order to identify the most suitable. Three learner groups participated in the research, two experimental and one control group. The learners were recorded in the beginning prior to the teaching intervention and after two months of the teaching intervention. Their production was assessed by two native English speakers through a Likert scale 1-9 based on how accented their speech was (1 = no accent, 9 = extremely strong accent)
Partial up-up-down order with the continuously distributed order parameter in the triangular antiferromagnet TmMgGaO4
Creators: name: Li, Yuesheng
name: Bachus, Sebastian
name: Deng, Hao
name: Schmidt, Wolfgang
name: Thoma, Henrik
name: Hutanu, Vladimir
name: Tokiwa, Yoshifumi
name: Tsirlin, Alexander A.
name: Gegenwart, Philipp
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Frustrated quasidoublets without time-reversal symmetry can host highly unconventional magnetic structures with continuously distributed order parameters even in a single-phase crystal. Here, we report the comprehensive thermodynamic and neutron diffraction investigation on the single crystal of TmMgGaO$_4$, which entails non-Kramers Tm$^{3+}$ ions arranged on a geometrically perfect triangular lattice. The crystal electric field (CEF) randomness caused by the site-mixing disorder of the nonmagnetic Mg$^{2+}$ and Ga$^{3+}$ ions, merges two lowest-lying CEF singlets of Tm$^{3+}$ into a ground-state (GS) quasidoublet. Well below $T_c$ $\sim$ 0.7 K, a small fraction of the antiferromagnetically coupled Tm$^{3+}$ Ising quasidoublets with small inner gaps condense into two-dimensional (2D) up-up-down magnetic structures with continuously distributed order parameters, and give rise to the \emph{columnar} magnetic neutron reflections below $μ_0H_c$ $\sim$ 2.6 T, with highly anisotropic correlation lengths, $ξ_{ab}$ $\geq$ 250$a$ in the triangular plane and $ξ_c$ $
description: Accepted in Physical Review X. The present manuscript is significantly different from the earlier preprint, arXiv:1804.00696, in the analysis, results, and contains additional neutron diffraction data
Pricing Schemes for Encouraging Farmers Participation on the Marketing Activities in Korean Agricultural Primary Cooperatives
Creators: name: Hwang, Euisik
name: Hwang, Euisik
Publisher: name: Unknown
Year: 2002
Subjects: subject: Marketing
subject: FOS: Economics and business

description: In Korea, the agricultural marketing patterns have been changing like the portion of large-scale retailer is increasing. To maintain a vertical relationship, it is important to meet the supply conditions of raw products in terms of a stable and uniform quality at all times. The local cooperatives must adopt the post-harvesting technologies and invest the nonphysical capital for developing the market options. This large investment results in high fixed costs so that the farmers' participation is a vital factor. It is more effective strategy that the local cooperatives first invest in marketing activities and then search a good measure encouraging farmers' participation. Main focus in this paper is to improve the pricing schemes for encouraging farmers' participation in cooperative marketing activities.
Ejection of hypervelocity stars by the (binary) black hole(s) in the Galactic center
Creators: name: Yu, Qingjuan
name: Tremaine, Scott
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study three processes that eject hypervelocity (>10^3 km/s) stars from the Galactic center: (i) close encounters of two single stars; (ii) tidal breakup of binary stars by the central black hole, as originally proposed by Hills; and (iii) three-body interactions between a star and a binary black hole (BBH). Mechanism (i) expels hypervelocity stars to the solar radius at a negligible rate, ~10^{-11}/yr. Mechanism (ii) expels hypervelocity stars at a rate ~ 10^{-5}(η/0.1)/yr, where ηis the fraction of stars in binaries with semimajor axis a_b
description: 23 pages, including 2 figures; accepted for publication in ApJ
Fractionalization in Spin Liquid Mott Insulators: Vison Wavefunctions and Gaps
Creators: name: Paramekanti, Arun
name: Randeria, Mohit
name: Trivedi, Nandini
Publisher: name: arXiv
Year: 2003
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study fractionalization in a spin-liquid Mott insulator defined by a Gutzwiller projected BCS state |0> at half-filling. We construct a trial vison (Z2 vortex) state |V> by projecting an hc/2e vortex and determine when it is orthogonal to |0>. Using a combination of analytical arguments and Monte Carlo calculations we show that generically the spin-liquid is Z2 fractionalized. For microscopic parameters appropriate for high Tc cuprates, we estimate that the vison gap Ev << J, consistent with recent experimental bounds, due to proximity to the bipartite symmetric point where Ev = 0.
description: 4 pages; 3 figures (one figure modified to show asymptotic exponential decay of overlaps in fractionalized phase)
Additional file 2 of Population-level investigation of the knowledge of ocular chemical injuries and proper immediate action
Creators: name: Hadeel Seraj
name: Shahad Khawandanh
name: Fatani, Arwa
name: Afnan Saeed
name: Ghadeer Alotaibi
name: Basheikh, Ahmed
Publisher: name: figshare
Year: 2020
Subjects: subject: Molecular Biology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Science Policy

description: Additional file 2: Table S2. Educational level of the respondents. Most of the respondents had a bachelorâ€™s degree (575, 64.8%).
Additional file 1 of Population-level investigation of the knowledge of ocular chemical injuries and proper immediate action
Creators: name: Hadeel Seraj
name: Shahad Khawandanh
name: Fatani, Arwa
name: Afnan Saeed
name: Ghadeer Alotaibi
name: Basheikh, Ahmed
Publisher: name: figshare
Year: 2020
Subjects: 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: Developmental Biology
subject: Science Policy

description: Additional file 1: Table S1. Sex characteristics of the respondents. Most of our study participants were female (624, 70.3%).
Generalized sum rules of the nucleon in the CQM
Creators: name: Gorchtein, M.
name: Drechsel, D.
name: Giannini, M. M.
name: Santopinto, E.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The sum rules serve a powerful tool to study the nucleon structure by providing a bridge between the statical properties of the nucleon (such as electrical charge, and magnetic moment) and the dynamical properties (e.g. the transition amplitudes to excited states) in a wide range of energy and momentum transfer $Q^2$. We study the generalized sum rules of the nucleon in the framework of the constituent quark model. We use two different CQM, the one with the hypercentral potential \cite{hccqm1}, \cite{hccqm2}, \cite{hccqm3}, and with the harmonic oscillator potential \cite{KI}, both with only few parameters fixed to the baryonic spectrum. We confront our results to the model independent sum rules and to the predictions of the phenomenological MAID \cite{MAID} model and find that in all the cases considered, in the intermediate $Q^2$ range (0.2-1.5 GeV$^2$), both CQM models provide a good description of the sum rules on the neutron.
description: Talk given at IV International Conference on "Perspectives in Hadronic Physics", May 12-16, 2003, Trieste (Italy) 3 pages, 4 figures
Fast Pixelated Detectors in Scanning Transmission Electron Microscopy. Part II: Post Acquisition Data Processing, Visualisation, and Structural Characterisation
Creators: name: Paterson, Gary W.
name: Webster, Robert W. H.
name: Ross, Andrew
name: Paton, Kirsty A.
name: Macgregor, Thomas A.
name: McGrouther, Damien
name: MacLaren, Ian
name: Nord, Magnus
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Fast pixelated detectors incorporating direct electron detection (DED) technology are increasingly being regarded as universal detectors for scanning transmission electron microscopy (STEM), capable of imaging under multiple modes of operation. However, several issues remain around the post acquisition processing and visualisation of the often very large multidimensional STEM datasets produced by them. We discuss these issues and present open source software libraries to enable efficient processing and visualisation of such datasets. Throughout, we provide examples of the analysis methodologies presented, utilising data from a 256$\times$256 pixel Medipix3 hybrid DED detector, with a particular focus on the STEM characterisation of the structural properties of materials. These include the techniques of virtual detector imaging; higher order Laue zone analysis; nanobeam electron diffraction; and scanning precession electron diffraction. In the latter, we demonstrate nanoscale lattice parameter mapping with a fractional precision $\le 6\times10^{-4}$ (0.06%).
description: 23 pages, 12 figures, add open data zenodo doi and revise precision discussion
The extremal limits of the C-metric: Nariai, Bertotti-Robinson and anti-Nariai C-metrics
Creators: name: Dias, Oscar J. C.
name: Lemos, Jose' P. S.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In two previous papers we have analyzed the C-metric in a background with a cosmological constant, namely the de Sitter (dS) C-metric, and the anti-de Sitter (AdS) C-metric, following the work of Kinnersley and Walker for the flat C-metric. These exact solutions describe a pair of accelerated black holes in the flat or cosmological constant background, with the acceleration A being provided by a strut in-between that pushes away the two black holes. In this paper we analyze the extremal limits of the C-metric in a background with generic cosmological constant. We follow a procedure first introduced by Ginsparg and Perry in which the Nariai solution, a spacetime which is the direct topological product of the 2-dimensional dS and a 2-sphere, is generated from the four-dimensional dS-Schwarzschild solution by taking an appropriate limit, where the black hole event horizon approaches the cosmological horizon. Similarly, one can generate the Bertotti-Robinson metric from the Reissner-Nordstrom metric by taking the limit of the Cauchy horizon going into the event horizon of the black hole, as well as the anti-Nariai by taking an appropriate solution and limit. Using these methods we generate the C-metric counterparts of the Nariai, Bertotti-Robinson and anti-Nariai solutions, among others. One expects that the solutions found in this paper are unstable and decay into a slightly non-extreme black hole pair accelerated by a strut or by strings. Moreover, the Euclidean version of these solutions mediate the quantum process of black hole pair creation, that accompanies the decay of the dS and AdS spaces.
Project based learning and home economics education
Creators: name: Henderson, Kendra
Publisher: name: The University of British Columbia
Year: 2023

description: This paper explores Project Based Learning (PjBL) and its potential use in Home Economics Education. I begin with a literature review that explores the themes of effectiveness of PjBL, the role of student characteristics in PjBL, challenges associated with enacting PjBL, and improving the effectiveness of PjBL. I then argue that this process of learning can be used effectively in Home Economics and that it complements the prevailing claim that Home Economics involves “hands-on” learning and emphasizes “problem-solving” and the general use of active learning. To facilitate the use of PjBL in Home Economics I present basic information and various examples of how PjBL may be used in Home Economics education in the form of a handbook for teachers. The handbook is designed so that it can be separated from this larger document to be used in professional development workshops and circulated among home economics teachers.
Rotational cooling of molecules using lamps
Creators: name: Vogelius, I. S.
name: Madsen, L. B.
name: Drewsen, M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We investigate theoretically the application of tailored incoherent far-infrared fields in combination with laser excitation of a single rovibrational transition for rotational cooling of translationally cold polar diatomic molecules. The cooling schemes are effective on a timescale shorter than typical unperturbed trapping times in ion traps and comparable to obtainable confinement times of neutral molecules.
description: 5 pages, 2 figures
Electron temperatures and densities of planetary nebulae determined from the nebular hydrogen recombination spectrum and temperature and density variations
Creators: name: Zhang, Y.
name: Liu, X. -W.
name: Wesson, R.
name: Storey, P. J.
name: Liu, Y.
name: Danziger, I. J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A method is presented to derive electron temperatures and densities of planetary nebulae (PNe) simultaneously, using the observed hydrogen recombination spectrum, which includes continuum and line emission. By matching theoretical spectra to observed spectra around the Balmer jump at about 3646A, we determine electron temperatures and densities for 48 Galactic PNe. The electron temperatures based on this method are found to be systematically lower than those derived from [O III] 4959/4363 and [O III] (88μ+52μ)/4959 ratios. And the electron densities based on this method are found to be systematically higher than those derived from forbidden line ratios. These results suggest that temperature and density fluctuations are generally present within nebulae. In addition, He/H abundances of PNe are found to be positively correlated with the difference between T_e([O III]) and T_e(Bal), suggesting that He/H abundances might have been overestimated generally because of the possible existence of H-deficient knots.
description: 41 pages, 10 figures, accepted for publication in MNRAS
Τεχνητή Νοημοσύνη στα Παιχνίδια
Creators: name: Χοβαρδάς, Δοξάκης Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2021
Subjects: Τεχνητή Νοημοσύνη
Ενισχυτική Μάθηση
Παιχνίδια με Κρυφή Πληροφορία
Artificial Intelligence
Reinforcement Learning
Hidden Information Games

description: Σκοπός της διατριβής ήταν η μελέτη των τρόπων χρήσης της Τεχνητής Νοημοσύνης στα παιχνίδια και ειδικότερα η χρήση της Ενισχυτικής μάθησης σε παιχνίδια με κρυφή πληροφορία, καθώς και η ανάπτυξη ευφυών πρακτόρων ικανών να παίξουν πόκερ. Στα παιχνίδια με κρυφή πληροφορία η πραγματική κατάσταση του περιβάλλοντος δεν είναι γνωστή στους παίκτες, οι οποίοι θα πρέπει να πάρουν αποφάσεις έχοντας λάβει υπόψη την αβεβαιότητα που επικρατεί σε αυτό το παιχνίδι και εικάζοντας ποια είναι η πραγματική κατάσταση του παιχνιδιού. Για το χειρισμό αυτού του είδους παιχνιδιών η ερευνητική κοινότητα βασίστηκε στην έννοια της Ισορροπίας κατά Nash (Nash Equilibrium), κατά την οποία ο παίκτης προσπαθεί να παίξει κάνοντας την καλύτερη κίνηση για το χειρότερο δυνατό σενάριο. Στην παρούσα διατριβή υλοποιήθηκαν διάφοροι αλγόριθμοι από τις κατηγορίες της ενισχυτικής μάθησης και της αναζήτησης στο παιχνίδι Heads up No Limit Texas Holdem Poker. Οι αλγόριθμοι εκπαιδεύτηκαν και αξιολογήθηκαν σε διαφορετικά σενάρια, με τα αποτελέσματα να υποδεικνύουν ως καλύτερους, τους αλγορίθμους Neural Fictitious Self-Play (NFSP) και Deep Counterfactual Regret Minimization (Deep CFR), ενώ αποδείχτηκε ότι οι γενικοί αλγόριθμοι Βαθιάς Ενισχυτικής Μάθησης δεν είναι αποδοτικοί σε τέτοιου είδους παιχνίδια. Τέλος, δημιουργήθηκε και ένα γραφικό περιβάλλον για την περαιτέρω αξιολόγηση των αλγορίθμων εναντίον ανθρώπων
description: The aim of the present thesis was the study of how Artificial Intelligence (AI) is used in games, the study of Reinforcement Learning in games with imperfect information and the development of AI agents capable of playing Poker. In games with imperfect information, the actual state of the environment is not known to the players, and for this reason, they have to act by taking into consideration the uncertainty of these games. In order to solve this problem, scientific research was based on the Game Theory’s solution concept of Nash Equilibrium. According to Nash Equilibrium, the player tries to act by performing the best action for the worst-case scenario. In the present thesis, a number of AI agents were created from the fields of Reinforcement Learning and Search in Heads up No Limit Texas Holdem Poker game. The agents were trained and evaluated in different scenarios, with Neural Fictitious Self-Play (NFSP) και Deep Counterfactual Regret Minimization (Deep CFR) agents being the best overall based on the results. It was also proven that general Deep Reinforcement Learning agents cannot handle these games well. To further test the agents against human opponents, a graphical user interface was also developed
Better algorithms for unfair metrical task systems and applications
Creators: name: Fiat, Amos
name: Mendel, Manor
Publisher: name: arXiv
Year: 2004
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: Unfair metrical task systems are a generalization of online metrical task systems. In this paper we introduce new techniques to combine algorithms for unfair metrical task systems and apply these techniques to obtain improved randomized online algorithms for metrical task systems on arbitrary metric spaces.
description: 20 pages, 1 figure
Hardy type inequalities on closed manifolds via Ricci curvature
Creators: name: Meng, Canjun
name: Wang, Han
name: Zhao, Wei
Publisher: name: arXiv
Year: 2019
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: The paper is devoted to Hardy type inequalities on closed manifolds. By means of various weighted Ricci curvatures, we establish several sharp Hardy type inequalities on closed weighted Riemannian manifolds. Our results complement in several aspects those obtained recently in the noncompact Riemannian setting.
Neutralino-neutralino annihilation to photon and gluon pairs in MSSM models
Creators: name: Gounaris, G. J.
name: Layssac, J.
name: Porfyriadis, P. I.
name: Renard, F. M.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The complete 1-loop computation of the processes $(\tchi^0_i \tchi^0_j \leftrightarrowγγ, ~ gg)$, for any pair of the four MSSM neutralinos, has been performed for an arbitrary c.m energy. As a first application suitable for Dark Matter (DM) searches, the neutralino-neutralino annihilation is studied at relative velocities $v/c\simeq 10^{-3}$ describing the present DM distribution in the galactic halo, and $v/c\simeq 0.5$ determining neutralino relic density contributions. Numerical results are presented for 31 MSSM benchmark models indicating considerable sensitivity to the input parameters. Numerical codes are released, which may be used for the computation of the annihilation of any two neutralinos to two photons or two gluons at the aforementioned $v/c$ values. In the near future, we intend to complement them with codes for the inverse process $γγ\to \tchi^0_i \tchi^0_j$, observable at the future high energy Linear Colliders.
description: 14 pages and 1 figure; version to appear in Phys. Rev.D; Title slightly changed
Additional file 1 of Qualitative exploration of determinants of active mobility and social participation in Urban neighborhoods: individual perceptions over objective factors?
Creators: name: Bollenbach, Lukas
name: Kanning, Martina
name: Niermann, Christina
Publisher: name: figshare
Year: 2024
Subjects: subject: Environmental Sciences not elsewhere classified
subject: Science Policy
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Mental Health

description: Supplementary Material 1: Additional file 1_Interview Guideline (translated from German to English).
Variational theory of flux-line liquids
Creators: name: Ettouhami, A. M.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We formulate a variational (Hartree like) description of flux line liquids which improves on the theory we developed in an earlier paper [A.M. Ettouhami, Phys. Rev. B 65, 134504 (2002)]. We derive, in particular, how the massive term confining the fluctuations of flux lines varies with temperature and show that this term vanishes at high enough temperatures where the vortices behave as freely fluctuating elastic lines.
description: 10 pages, 1 postscript figure
Mechanisms of Electrospray Ionization for Mass Spectrometry Analysis
Creators: name: Jayo, Roxana
Publisher: name: The University of British Columbia
Year: 2014

description: Electrospray ionization mass spectrometry (ESI-MS) is a choice method to accomplish the mass determination of large, non-volatile biomolecules including proteins, peptides, oligonucleotides, carbohydrates, polysaccharides and other compounds which are too large to be vaporized or too fragile to remain intact when other ionization methods are used. Since ions are generated directly from the liquid phase, ESI can be easily coupled to separation techniques such as high performance liquid chromatography (HPLC) and capillary electrophoresis (CE). Although ESI has had an enormous impact on modern mass spectrometry, and has become one of the most important ionization techniques, some parts of the underlying processes have proven to be very difficult to establish. Such is the case of the mechanisms by which gas-phase ions are produced by the charged droplets. Two theories, the Charge Residue Model (CRM) and the Ion Evaporation Mechanism (IEM), have been proposed. Since electrochemistry is considered a fundamental aspect of the operation of the ESI ion source both for the fundamentals of gas-phase ion formation from the charged droplets, and for the analytical utility of the device, there has been considerable efforts in order to elucidate the electrochemical process associated to the operation of this ion source. The aim of the present report is to provide a concise and fundamental description of the mechanisms involved in the production of isolated ions by ESI, as well as, to present a brief account of the electrolytic nature of ESI.
Art and Politics: reflections about the inclusion of indigenous culture within the art theory domain
Creators: name: Larín, Letícia
Publisher: name: CAP - Public Art Journal
Year: 2020

description: What is the pertinence of considering indigenous activism into art discussions? To think about this inquiry, some reflections take place around three strategies useful concomitantly to politics and to political art: association, documentation and autonomous body. Each one of these topics is observed from a pair composed by a Brazilian art initiative and a Brazilian indigenist action. The examples in juxtaposition are, respectively, headed by, Lasar Segall and Benki Piyãko, Claudia Andujar and Mário Juruna, and Antonio Manuel and Ailton Krenak. The permissiveness of the contemporary art’s field facilitates the inclusion of esthetical irruptions from other champs. Meanwhile, to clarify some aspects of this situation, it’s necessary to recognize arguments that permit to consider these outsider narratives into the art’s scope. The three artistic propositions enunciated in this article, seek in diverse ways, to transgress limits imposed by the artistic institution. So, while they explicitly belong to the branch of public art, they articulate inside this sphere, a political attitude.
description: CAP - Public Art Journal, Vol 1 No 1 (2019): Memory in Public Art
Cold giant planets evaporated by hot white dwarfs
Creators: name: Schreiber, Matthias R.
name: Gaensicke, Boris T.
name: Toloza, Odette
name: Hernandez, Mercedes-S.
name: Lagos, Felipe
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Atmospheric escape from close-in Neptunes and hot Jupiters around sun-like stars driven by extreme ultraviolet (EUV) irradiation plays an important role in the evolution of exo-planets and in shaping their ensemble properties. Intermediate and low mass stars are brightest at EUV wavelengths at the very end of their lives, after they have expelled their envelopes and evolved into hot white dwarfs. Yet the effect of the intense EUV irradiation of giant planets orbiting young white dwarfs has not been assessed. We show that the giant planets in the solar system will experience significant hydrodynamic escape caused by the EUV irradiation from the white dwarf left behind by the Sun. A fraction of the evaporated volatiles will be accreted by the solar white dwarf, resulting in detectable photospheric absorption lines. As a large number of the currently known extra-solar giant planets will survive the metamorphosis of their host stars into white dwarfs, observational signatures of accretion from evaporating planetary atmospheres are expected to be common. In fact, one third of the known hot single white dwarfs show photospheric absorption lines of volatile elements, which we argue are indicative of ongoing accretion from evaporating planets. The fraction of volatile contaminated hot white dwarfs strongly decreases as they cool. We show that accretion from evaporating planetary atmospheres naturally explains this temperature dependence if more than 50 per cent of hot white dwarfs still host giant planets.
description: ApJL in press
Rural population change in developing countries. lessons for policymaking
Creators: name: Anríquez, Gustavo
name: Stloukal, Libor
name: Anríquez, Gustavo
name: Stloukal, Libor
Publisher: name: Unknown
Year: 2008
Subjects: Agricultural and Food Policy
Community/Rural/Urban Development

description: Rural agriculture uses more than one-third of the earth's land and employs more than 40% of the population, a figure that approaches 75% in developing countries. As a result, rural demographic change is of vital importance. This paper monitors four driving factors in rural demographic change including the ratio of youth to the aged, the ratio of males to female, fertility levels and migration. Alongside conclusive findings, the authors bring to light the relevance of AIDS-related deaths, urbanisation, and city planning in demographic research.
description: FAO Document Repository: http://www.fao.org/3/a-aj981e.pdf
Gravity in the dynamical approach to the cosmological constant
Creators: name: Mukohyama, Shinji
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: One of the most disturbing difficulties in thinking about the cosmological constant is that it is not stable under radiative corrections. The feedback mechanism proposed in [hep-th/0306108] is a dynamical way to protect a zero or small cosmological constant against radiative corrections. Hence, while this by itself does not solve the cosmological constant problem, it can help solving the problem. In the present paper we investigate stability and gravity in this approach and show that the feedback mechanism is both classically and quantum mechanically stable and has self-consistent, stable dynamics.
description: 40 pages; references added; 3 new sections added to explain underlying idea, numerical results and quantum mechanical stability; version to appear in PRD
Dynamics of a large spin with weak dissipation
Creators: name: Vorrath, T.
name: Brandes, T.
name: Kramer, B.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate the generalization of the spin-boson model to arbitrary spin size. The Born-Markov approximation is employed to derive a master equation in the regime of small coupling strengths to the environment. For spin one half, the master equation transforms into a set of Bloch equations, the solution of which is in good agreement with results of the spin-boson model for weak ohmic dissipation. For larger spins, we find a superradiance-like behavior known from the Dicke model. The influence of the nonresonant bosons of the dissipative environment can lead to the formation of a beat pattern in the dynamics of the $z$-component of the spin. The beat frequency is approximately proportional to the cutoff $ω_c$ of the spectral function.
description: 11 pages, 3 figures, to appear in Chemical Physics Special Issue on the Spin-Boson Problem, ed. by H. Grabert and A. Nitzan