cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
FAIR Research Data Management in Materials Science with FAIRmat and NOMAD
Creators: name: Mansour, Ahmed E.
Publisher: name: Zenodo
Year: 2024

description: In this talk, I will present the latest developments of FAIRmat and the NOMAD ecosystem, emphasizing the critical aspects of data management in materials-science research. The NOMAD ecosystem, which includes platforms such as NOMAD, NOMAD Oasis, and NOMAD CAMELS, provides a complete solution for a research data management (RDM) framework tailored to the needs of the solid-state physics and materials-science communities. I will demonstrate how these platforms facilitate the systematic acquisition and management of research data from diverse sources, including materials synthesis, advanced characterization techniques, and simulations. The presentation will also cover how NOMAD ensures that research data is not only securely stored, but also remains accessible and interoperable across different research domains. Using real-world examples such as the development of novel solar cells, I will illustrate how the integrated approach of FAIRmat and NOMAD enhances the reliability and reproducibility of research data. This in turn supports collaborative research efforts and accelerates innovation by ensuring that data is AI-ready.

 

This work is funded by the NFDI consortium FAIRmat - Deutsche Forschungsgemeinschaft (DFG) - Project 460197019
description: This talk was presented at the 10th Ruhr Symposium "Artificial Intelligence for Functional Materials" on October 10, 2024.

https://ruhr-symposium.de/ruhr-symposium-program-2024/
Evaluating Nature Conservation: The Case of Meadow Birds in The Netherlands
Creators: name: Strijker, Dirk
name: Sijtsma, F.J.
name: Bettels, K.
name: Strijker, Dirk
name: Sijtsma, F.J.
name: Bettels, K.
Publisher: name: Unknown
Year: 2000
Subjects: Environmental Economics and Policy

description: Healthy growth towards sustainability requires evaluation methods that incorporate ecological and economic effects. Evaluating ecological effects in monetary terms would permit the use of Cost-Benefit Analysis. Major methodological difficulties hamper use of this approach. In this paper an alternative evaluation method is used. The method consists of a Multicriteria Analysis (MCA), in which the different aspects of nature conservation projects can be evaluated in their own terms. The net result of the monetarised effects is part of a CBA that is integrated as one of the criteria. This framework is applied to a major, publicly financed nature conservation project in the Netherlands. The project is based on a fixed budget and a fixed area in which nature can be produced using different methods. In this project, apart from analysing the net results, besides the net results of a CBA, only one other criterion is analysed: the production of nature. In this way, the concept is reduced to a straightforward analysis of the performance (cost-effectiveness) of the different methods used to produce natural environment.
Camplani, Alberto: Le Lettere festali di Atanasio di Alessandria
Creators: name: Esbroeck, Michel Van
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 78 (1994): Oriens christianus, Band 78
Socio-Economic and Environmental Impact of AGENDA 2000 and Alternative Policy Choices for Market Liberalization on an Irrigated Area in Northwestern Spain
Creators: name: Gomez-Limon, Jose Antonio
name: Arriaza Balmón, Manuel
name: Gomez-Limon, Jose Antonio
name: Arriaza Balmón, Manuel
Publisher: name: Unknown
Year: 2000
Subjects: Environmental Economics and Policy

description: This paper presents a methodology to evaluate the impact of different policy scenarios using a farmer's utility function. The analysis shows the impact on farmers and on the environment. The case study is a community of irrigated farms (Bajo Carrión) in Northwestern Spain. The results obtained show how Agenda 2000 has little impact on farm crop distribution, gross margins, employment and environment (use of fertilizers and water). The most radical scenario (a 15 per cent COP price cut and no area payments) produces a 37.3 per cent reduction in farm gross margin, and an increase in fertilizer use of 6 per cent.
Flexible and efficient discretizations of multilayer models with variable density
Creators: name: Bonaventura, Luca
name: Garres-Díaz, José
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We show that the semi-implicit time discretization approaches previously introduced for multilayer shallow water models for the barotropic case can be also applied to the variable density case with Boussinesq approximation. Furthermore, also for the variable density equations, a variable number of layers can be used, so as to achieve greater flexibility and efficiency of the resulting multilayer approach. An analysis of the linearized system, which allows to derive linear stability parameters in simple configurations, and the resulting spatially semi-discretized equations are presented. A number of numerical experiments demonstrate the effectiveness of the proposed approach.
Meditations on/in non/dualistic pedagogy
Creators: name: Pryer, Alison Catherine
Publisher: name: University of British Columbia
Year: 2009

description: This dissertation is a collection of essays that meditate upon the concept of non/dual pedagogy. The text is an expression of my longing to speak beyond the limitations of dualistic pedagogy, in its diverse forms and locations, and to actively seek out those non/dualistic pedagogical traits that for so long have been split off, denigrated and dismissed within dualistic educational systems. Dualistic pedagogies devalue the body, the spirit, the emotional, the passionate, the subjective, the intuitive, the non-rational, the chaotic, and the sacred. My purpose is to go some way to revealing the richness, vivacity and complexity of non/dualistic pedagogical experience. As the dualistic organization o f pedagogical cultures leads to the experience of disembodiment, and reinforces other inequalities such as sexism and racism, this study may be considered both an ethical and political undertaking. Paradoxically, the very word "non/dual" infers dualism in its structure. Thus, I dwell in the hyphenated space between "non" and "dual," a space of great possibility. This liminal space touches upon areas that mainstream curriculum theorists consider somewhat impure, taboo even - including, the erotics of teaching and learning, and the interrelationships between pedagogy, violence and desire. This text contains spaces of struggle and resistance as well as spaces of contemplation and meditation. Although I do explore non/dualistic pedagogy in formal educational institutions, including schools, and teacher education and graduate programs, I have chosen to make forays into other less examined pedagogical sites, meditating on the pedagogy of Zen arts; the public pedagogy of popular culture; and, the pedagogy of family. I also muse upon the practice o f ritual; the powerful effect of place on the embodied self; physical and metaphorical notions of "voice," lived fictions of identity and dis/placement; and, the interplay between embodiment and dis/embodiment as a legacy of childhood sexual abuse. I suggest that non/dualistic knowledge, arising out of specific locations, contexts, and circumstances is dynamic, generative and unpredictable, and refuses the convenience of objectification and the order of stable systems of categorization. Thus, a non/dualistic relationship to knowledge is characterized by uncertainty and contingency, and is necessarily cultivated through a vitally creative approach.
Desynchronized wave patterns in synchronized chaotic regions of coupled map lattices
Creators: name: Palaniyandi, P.
name: Muruganandam, P.
name: Lakshmanan, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We analyze the size limits of coupled map lattices with diffusive coupling at the crossover of low-dimensional to high-dimensional chaos. We investigate the existence of standing-wave-type periodic patterns, within the low-dimensional limit, in addition to the stable synchronous chaotic states depending upon the initial conditions. Further, we bring out a controlling mechanism to explain the emergence of standing-wave patterns in the coupled map lattices. Finally, we give an analytic expression in terms of the unstable periodic orbits of the isolated map to represent the standing-wave patterns.
description: 5 pages, 3 figures, 2 tables (final version)
DeepMnemonic: Password Mnemonic Generation via Deep Attentive Encoder-Decoder Model
Creators: name: Cheng, Yao
name: Xu, Chang
name: Hai, Zhen
name: Li, Yingjiu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cryptography and Security (cs.CR)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Strong passwords are fundamental to the security of password-based user authentication systems. In recent years, much effort has been made to evaluate password strength or to generate strong passwords. Unfortunately, the usability or memorability of the strong passwords has been largely neglected. In this paper, we aim to bridge the gap between strong password generation and the usability of strong passwords. We propose to automatically generate textual password mnemonics, i.e., natural language sentences, which are intended to help users better memorize passwords. We introduce \textit{DeepMnemonic}, a deep attentive encoder-decoder framework which takes a password as input and then automatically generates a mnemonic sentence for the password. We conduct extensive experiments to evaluate DeepMnemonic on the real-world data sets. The experimental results demonstrate that DeepMnemonic outperforms a well-known baseline for generating semantically meaningful mnemonic sentences. Moreover, the user study further validates that the generated mnemonic sentences by DeepMnemonic are useful in helping users memorize strong passwords.
description: Published in IEEE Transactions on Dependable and Secure Computing (TDSC)
The effect of long-run identification on impulse-response functions: An application to the relationship between macroeconomics and agriculture in Tunisia
Creators: name: Ben Kaabia, Monia
name: Gil, Jose Maria
name: Chebbi, Houssem Eddine
name: Ben Kaabia, Monia
name: Gil, Jose Maria
name: Chebbi, Houssem Eddine
Publisher: name: Unknown
Year: 2002
Subjects: Agricultural and Food Policy

description: The objective of this paper is to analyse some of the most relevant relationships among macroeconomic variables and the agricultural sector in Tunisia. Three alternative models are specified and estimated: a VAR in levels, an unrestricted Vector Error Correction Model (VECM), and a Restricted VECM in which long-run relationships among the relevant variables are identified. In all models short-run dynamics are analysed through the use of Generalised Impulse Response Functions. Results indicate that alternative model specifications generate different short-run dynamics. Long-run identification seems to be a necessary condition for obtaining consistent economic results.
Gauge-natural field theories and Noether Theorems: canonical covariant conserved currents
Creators: name: Palese, Marcella
name: Winterroth, Ekkehart
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 58A20; 58A32; 58E30; 58E40; 58J10; 58J70

description: Recently we found that canonical gauge-natural superpotentials are obtained as global sections of the {\em reduced} $(n-2)$-degree and $(2s-1)$-order quotient sheaf on the fibered manifold $\bY_{\zet} \times_{\bX} \mathfrak{K}$, where $\mathfrak{K}$ is an appropriate subbundle of the vector bundle of (prolongations of) infinitesimal right-invariant automorphisms $\barΞ$. In this paper, we provide an alternative proof of the fact that the naturality property $\cL_{j_{s}\barΞ_{H}}ω(λ, \mathfrak{K})=0$ holds true for the {\em new} Lagrangian $ω(λ, \mathfrak{K})$ obtained contracting the Euler--Lagrange form of the original Lagrangian with $\barΞ_{V}\in \mathfrak{K}$. We use as fundamental tools an invariant decomposition formula of vertical morphisms due to Kolář and the theory of iterated Lie derivatives of sections of fibered bundles. As a consequence, we recover the existence of a canonical generalized energy--momentum conserved tensor density associated with $ω(λ, \mathfrak{K})$.
description: 16 pages, abstract rewritten, body slightly revised, Proc. Winter School "Geometry and Physics" (Srni,CZ 2005)
Uncovering magnetic turbulence in young supernova remnants with polarized X-ray imaging
Creators: name: Bykov, Andrei M.
name: Uvarov, Yury A.
name: Slane, Patrick
name: Ellison, Donald C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Observations of young supernova remnants (SNRs) in X-rays and gamma-rays have provided conclusive evidence for particle acceleration to at least TeV energies. Analysis of high spatial resolution X-ray maps of young SNRs has indicated that the particle acceleration process is accompanied by strong non-adiabatic amplification of magnetic fields. If Fermi acceleration is the mechanism producing the energetic cosmic rays (CRs), the amplified magnetic field must be turbulent and CR-driven instabilities are among the most probable mechanisms for converting the shock ram pressure into the magnetic turbulence. The development and evolution of strong magnetic turbulence in the collisionless plasmas forming SNR shells are complicated phenomena which include the amplification of magnetic modes, anisotropic mode transformations at shocks, as well as the nonlinear physics of turbulent cascades. Polarized X-ray synchrotron radiation from ultra-relativistic electrons accelerated in the SNR shock is produced in a thin layer immediately behind the shock and is not subject to the Faraday depolarization effect. These factors open possibilities to study some properties of magnetic turbulence and here we present polarized X-ray synchrotron maps of SNR shells assuming different models of magnetic turbulence cascades. It is shown that different models of the anisotropic turbulence can be distinguished by measuring the predominant polarization angle direction. We discuss the detection of these features in Tycho's SNR with the coming generation of X-ray polarimeters such as the Imaging X-ray Polarimetry Explorer (IXPE).
description: Accepted in The Astrophysical Journal, July 2020. (11 pages, 9 figures)
Supplemental Methods and Results from Ectoparasite extinction in simplified lizard assemblages during experimental island invasion
Creators: name: Cox, Christian L.
name: Alexander, Sean
name: Casement, Brianna
name: Chung, Albert K.
name: Curlis, John David
name: Degon, Zachariah
name: Dubois, Madeline
name: Falvey, Cleo
name: Graham, Zackary A.
name: Folfas, Edita
name: Koyner, Maria A. Gallegos
name: Neel, Lauren K.
name: Nicholson, Daniel J.
name: Perez, Dylan J. Padilla
name: Ross, Xochitl Ortiz
name: Rosso, Adam A.
name: Taylor, Quinn
name: Thurman, Timothy J.
name: Williams, Claire E.
name: W. Owen McMillan
name: Logan, Michael L.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology

description: Supplemental Methods and Results
Figure S1 - S4 from Ethylene glycol assisted three-dimensional floral evolution of BiFeO3-based nanostructures with effective magneto-electric response
Creators: name: Abbas, Syed Kumail
name: Mustafa, Ghulam M.
name: Saleem, Murtaza
name: Sufyan, Muhammad
name: Saira Riaz
name: Naseem, Shahzad
name: Atiq, Shahid
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: 30399 Macromolecular and Materials Chemistry not elsewhere classified
subject: FOS: Chemical sciences
subject: 30699 Physical Chemistry not elsewhere classified

description: Fig. S1 Rietveld refined XRD patterns and their corresponding difference plots of the (a) pure BFO, (b) x = 0.00, (c) x = 0.03, (d) x = 0.05, (e) x = 0.07 and (f) x = 0.1 in BiFe0.9Co1-xNixO3;Fig. S2 Schematic diagram and their real images of (a) & (b) NRs and their transformation to (c) & (d) NPLs and (e) & (f) self –assembled NPLs floral formation, respectively;Fig. S3 PUND sequence for BiFe0.9Co1-xNixO3 (a) x = 0.00, (b) x = 0.03, (c) x = 0.05, (d) x = 0.07, (e) x = 0.1 and (f) bar graphs of QSW;Fig. S4 αME vs H plot for BiFe0.9Co1-xNixO3 (a) x = 0.00, (b) x = 0.03, (c) x = 0.05, (d) x = 0.07, (e) x = 0.1 and (f) bar graphs of αME for all samples
Agricultural and Food Competitiveness in Transition Central and Eastern European Countries: Social Profit Rate and Domestic Resource Cost Approaches
Creators: name: Bojnec, Stefan
name: Bojnec, Stefan
Publisher: name: Unknown
Year: 2002
Subjects: Demand and Price Analysis

description: Agricultural and food products in Central and Eastern European countries (CEECs) in transition to a market economy experienced improvements in international competitiveness in crops (wheat and sunflower) and higher value-added processed products. Less improvement in competitiveness is for animal products. The international competitiveness is in to some extent maintained by lower factor prices, which are likely to increase by increase in shadow prices of land and labour. Product quality, technology and efficiency improvements and rationalisation of costs, particularly in animal production and food processing are areas for improvements of international competitiveness in CEECs agriculture and the food sector.
Natural soft leptogenesis
Creators: name: Grossman, Yuval
name: Kitano, Ryuichiro
name: Murayama, Hitoshi
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Successful soft leptogenesis requires small B-terms for the right-handed sneutrinos and a large CP violating phase between the A- and B-terms. We show that this situation is realized naturally within the framework of gauge mediated supersymmetry breaking. The A-term is dominated by contribution from gauge mediation, while supergravity effects are more important for the B-term. The different origins naturally explain simultaneously the smallness of the B-term and the large CP violating phase. The most stringent bounds on the model come from the cosmological gravitino problem. We find a viable parameter region with very light gravitino $m_{3/2} \lesssim 16 eV$, providing a consistent framework for supersymmetry phenomenology, soft leptogenesis and cosmology.
description: 11 pages, 1 figure
title: Ranking recommendations via online learning
title: Διατεταγμένες συστάσεις μέσω άμεσης μάθησης
titleType: AlternativeTitle
Creators: name: Σούφλας, Ευστάθιος
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2021
Subjects: subject: Online learning
subject: Ranked recommendations
subject: Multi-armed bandit problem

description: Στη σημερινή εποχή, που χαρακτηρίζεται από υψηλούς ρυθμούς μετάδοσης της πληροφορίας και της ολοένα αυξανόμενης χρήσης του παγκόσμιου ιστού, υπάρχουν πολλές εφαρμογές και ιστοσελίδες που χειρίζονται συστήματα συστάσεων, προκειμένου να παρέχουν στους χρήστες τους τις καλύτερες δυνατές προτάσεις. Η λύση για τέτοιου είδους συστήματα δίνεται από την «Άμεση Μάθηση», η οποία απαιτεί χαμηλούς υπολογιστικούς πόρους και προσφέρει βέλτιστα αποτελέσματα. Στην παρούσα διπλωματική εργασία, εξετάζουμε την «Άμεση Μάθηση» και ειδικά το πρόβλημα των «Πολλαπλών Κουλοχέρηδων», που αποτελεί μία από τις διαστάσεις της. Σε επόμενα τμήματα, θα παρουσιάσουμε ορισμένους από τους πιο γνωστούς αλγόριθμους άμεσης μάθησης, που αναφέρονται στο προαναφερθέν πρόβλημα. Συγκεκριμένα, μας ενδιαφέρουν οι «διατεταγμένες συστάσεις» και η χρήση του μετα-αλγορίθμου «Αλγόριθμος Διατεταγμένων Κουλοχέρηδων» (RBA) στα πειράματά μας, ο οποίος χειρίζεται εκδοχές άλλων αλγορίθμων άμεσης μάθησης. Μελετάμε τη σύγκλιση του RBA μέσω των «επιχορηγούμενων συστάσεων», στις οποίες κάθε άρθρο είναι συσχετισμένο με ένα έσοδο, ενώ κάθε χρήστης είναι ένα υποσύνολο των άρθρων που τον ενδιαφέρουν και προέρχεται τυχαία από ένα σύνολο διαφορετικών πληθυσμών.
Pre-equilibrium stopping and charge capture in proton-irradiated aluminum sheets
Creators: name: Kononov, Alina
name: Schleife, André
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a first-principles study of pre-equilibrium stopping power and projectile charge capture in thin aluminum sheets irradiated by 6 - 60 keV protons. Our time-dependent density functional theory calculations reveal enhanced stopping power compared to bulk aluminum, particularly near the entrance layers. We propose the additional excitation channel of surface plasma oscillations as the most plausible explanation for this behavior. We also introduce a novel technique to compute the orbital-resolved charge state of a proton projectile after transmission through the sheet. Our results provide insight into the dynamics of orbital occupations after the projectile exits the aluminum sheet and have important implications for advancing radiation hardness and focused-ion beam techniques, especially for few-layer materials.
Apatheia bei den Stoikern und Akedia bei Evagrios Pontikos
Creators: name: Maier, Barbara
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 78 (1994): Oriens christianus, Band 78
Observations of V404 Cygni during the 2015 outburst by the Nasu telescope array at 1.4 GHz
Creators: name: Asuma, Kuniyuki
name: Niinuma, Kotaro
name: Takefuji, Kazuhiro
name: Aoki, Takahiro
name: Kida, Sumiko
name: Nakajima, Hirochika
name: Tsubono, Kimio
name: Daishido, Tsuneaki
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Waseda University Nasu telescope array is a spatial fast Fourier transform (FFT) interferometer consisting of eight linearly aligned antennas with 20 m spherical dishes. This type of interferometer was developed to survey transient radio sources with an angular resolution as high as that of a 160 m dish with a field of view as wide as that of a 20 m dish. We have been performing drift-scan-mode observations, in which the telescope scans the sky around a selected declination as the earth rotates. The black hole X-ray binary V404 Cygni underwent a new outburst in 2015 June after a quiescent period of 26 years. Because of the interest in black hole binaries, a considerable amount of data on this outburst at all wavelengths was accumulated. Using the above telescope, we had been monitoring V404 Cygni daily from one month before the X-ray outburst, and two radio flares at 1.4 GHz were detected on June 21.73 and June 26.71. The flux density and time-scale of each flare were 313+/-30 mJy and 1.50+/-0.49 days, 364+/-30 mJy and 1.70+/-0.16 days, respectively. We have also confirmed the extreme variation of radio spectra within a short period by collecting other radio data observed with several radio telescopes. Such spectral behaviors are considered to reflect the change in the opacity of the ejected blobs associated with these extreme activities in radio and X-ray. Our 1.4 GHz radio data are expected to be helpful for studying the physics of the accretion and ejection phenomena around black holes.
description: 9 pages, 10 figures, accepted for publication in the Publications of the Astronomical Society of Japan
Spatial Price Relationships in the Olive Oil Market of the Mediterranean
Creators: name: Fousekis, Panos
name: Klonaris, Stathis
name: Fousekis, Panos
name: Klonaris, Stathis
Publisher: name: Unknown
Year: 2002
Subjects: Demand and Price Analysis

description: The study of spatial price relationships helps to explain market performance and the degree of market integration. This paper provides an empirical analysis of the long- and short-run price linkages in the olive oil market of the Mediterranean using Time Series techniques. The empirical results suggest the existence of a stable long-run relationships among prices in Spain, Italy, and Greece. They also suggest that the major producer and exporter (Spain) is the price leader while Greece and Italy are the followers.
Supplementary Figures from Tracking stimulus representation across a 2-back visual working memory task
Creators: name: Wan, Quan
name: Cai, Ying
name: Samaha, Jason
name: Postle, Bradley R.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Neuroscience
subject: 170299 Cognitive Science not elsewhere classified
subject: FOS: Psychology
subject: 179999 Psychology and Cognitive Sciences not elsewhere classified

description: How does the neural representation of visual working memory content vary with behavioural priority? To address this, we recorded electroencephalography (EEG) while subjects performed a continuous-performance 2-back working memory task with oriented-grating stimuli. We tracked the transition of the neural representation of an item (n) from its initial encoding, to the status of ‘unprioritized memory item' (UMI), and back to ‘prioritized memory item', with multivariate inverted encoding modelling. Results showed that the representational format was remapped from its initially encoded format into a distinctive ‘opposite' representational format when it became a UMI and then mapped back into its initial format when subsequently prioritized in anticipation of its comparison with item n + 2. Thus, contrary to the default assumption that the activity representing an item in working memory might simply get weaker when it is deprioritized, it may be that a process of priority-based remapping helps to protect remembered information when it is not in the focus of attention.
Children’s views on teaching and learning in drawing
Creators: name: Kalin, Nadine
Publisher: name: University of British Columbia
Year: 2009

description: This study investigated children's preferred strategies for learning to draw. Twenty-six Grade 6 students engaged in three different drawing tasks (observation, feeling, and cartoon), and generated their favoured strategies for improving their drawing skills related to each drawing task. Students then ranked their top three strategies for each drawing task. In addition, six students were interviewed about their drawing experiences and development, both inside and outside of school. Results indicated that the participants desired to improve their drawing skills through a variety of strategies that reflected their outside of school practices such as copying, tracing, getting ideas from others, drawing with others, and watching TV to get ideas. Most of the participant-generated strategies and rankings concerned watching and looking at examples. Help provided by the teacher and through interactions with others were also highly favoured. In general, the participants chose different strategies for different drawing tasks. The interview results further outlined participants' desires to improve, their perceptions of a lack of help for drawing at school, and the importance of significant others in their drawing development. Recommendations are suggested for classroom teachers to incorporate learners' ways of knowing, thinking, and representing in art education.
Empirical Evidence of Technical Efficiency Levels in Greek Organic and Conventional Farms
Creators: name: Tzouvelekas, Vangelis
name: Pantzios, Christos J.
name: Fotopoulos, Christos
name: Tzouvelekas, Vangelis
name: Pantzios, Christos J.
name: Fotopoulos, Christos
Publisher: name: Unknown
Year: 2002
Subjects: Research and Development/Tech Change/Emerging Technologies

description: The present study utilizes the stochastic production frontier approach in evaluating the technical efficiency rates achieved in four types of Greek organic and conventional farm operations, namely, olive oil-producing, cotton, raisin-producing, and grapes-for-wine producing farms. The empirical results are expected to illustrate possible differences in the technical efficiency scores between the two farming technologies, and provide empirical evidence which at least in the field of organic farming performance is scarce or even absent. Such assessments may also be helpful for pointing out purely economic advantages (or disadvantages) of organic farming, in addition to its environmental dimension, and formulating policies to improve its economic performance.
Statistics of Real Eigenvalues in Ginibre's Ensemble of Random Real Matrices
Creators: name: Kanzieper, Eugene
name: Akemann, Gernot
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: High Energy Physics - Theory (hep-th)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: The integrable structure of Ginibre's Orthogonal Ensemble of random matrices is looked at through the prism of the probability "p_{n,k}" to find exactly "k" real eigenvalues in the spectrum of an "n" by "n" real asymmetric Gaussian random matrix. The exact solution for the probability function "p_{n,k}" is presented, and its remarkable connection to the theory of symmetric functions is revealed. An extension of the Dyson integration theorem is a key ingredient of the theory presented.
description: Published version (4.5 pages, 1 table; title changed, corrected typos)
Causality between food prices and other goods prices: Evidence from the EU member-states
Creators: name: Voyiatzis, A.
name: Pallis, D.
name: Katsouli, E.
name: Voyiatzis, A.
name: Pallis, D.
name: Katsouli, E.
Publisher: name: Unknown
Year: 2002
Subjects: Demand and Price Analysis

description: The purpose of this paper was to investigate and measure the causation between food consumer price index and all-other-items consumer price index in 14 European Union member-states, using monthly data covering the period from 1985:12 to 1998:12. For this purpose a four stages approach was employed: Firstly, the non-stationarity of the data involved was investigated using the Augmented Dickey-Fuller tests. Secondly, causation was investigated using the Granger causality tests. Thirdly, the long-run equilibrium relationship between the two variables involved was estimated employing the Johansen cointegration approach. Fourthly, the short-term disequilibrium relationship between these two variables was estimated employing the Error-Correction-Models methodology. The findings of the paper generally support the hypothesis that for the vast majority of the EU member-states there exist a unidirectional Granger causality from all-other-items consumer prices to food consumer prices.
Flow states and transitions in flow past arrays of tandem cylinders
Creators: name: Hosseini, Negar
name: Griffith, Martin D.
name: Leontini, Justin S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Direct numerical simulations at Re = 200 have been conducted of the flow past rows of tandem cylinders. Local stability analysis shows that the wakes of two tandem cylinders are characterised by the formation of a region where the mean flow is locally absolutely unstable immediately behind the second cylinder, followed by a long region that is convectively unstable. The location where the flow changes from absolutely to convectively unstable provides a prediction of where the placement of a third body could trigger a global change, which is confirmed with simulations of the flow past three cylinders, and the flow past two cylinders followed by a short flat plate. A third body placed downstream of the absolute/convective instability transition location is effectively cloaked, its presence having virtually no impact on the flow both upstream and downstream. However, when a body is placed upstream of this location it triggers a global change in the flow, its presence being broadcast throughout the flow domain. However, a third cylinder placed well upstream of this location does not trigger the global change. Sensitivity analysis of the mean flow is conducted, and it is shown that the third cylinder does not simply act as a small perturbation that can excite sensitive regions, but when it is very close to the second cylinder it induces a mean flow correction that eliminates the sensitive regions which may explain why it does not trigger the global change.
description: 21 pages, 16 figures
A combined approach on the impact of EP300 overexpression on drug resistance, invasion and stemness in breast cancer
Creators: name: Jugov, Roman
Publisher: name: Imperial College London
Year: 2020

description: Triple negative breast cancer, characterized by absence of estrogen and progesterone receptors and human epidermal growth factor receptor 2 (HER2), is very aggressive, and often progresses to metastasis. The absence of druggable targets implies that conventional chemotherapeutic agents do not work. Recent genomic studies show that epigenetics play a complicated role in maintaining healthy gene expression. This thesis attempted to demonstrate a link between E1A binding protein P300 (EP300), epithelial to mesenchymal transition (EMT), drug resistance and cancer stem cell (CSC) traits by using breast cancer cell line models with EP300 overexpression (CAL51 and MDA-MB-231), short hairpin RNA (shRNA) lentiviral knockdown EP300 (T47D and MCF7), and EP300 knockout in colorectal cancer (HCT116). Techniques such as flow cytometry, migration/invasion assays and short/long term drug resistance assays were used to demonstrate these traits. This study also employed reverse transcription quantitative real-time PCR (RTqPCR) and RNA sequencing (RNA-seq) gene expression analysis for evaluating a gene signature and miR expression. The study demonstrated positive regulation of EP300, forkhead box O3a (FOXO3a) and GATA binding protein 3 (GATA3) by miR-25 in minimally transformed mammary epithelial cancer (MTMEC) model. Neither RNA-seq nor RTqPCR demonstrated any correlation between cancer subtype and our gene signature. However, we confirmed that EP300 overexpression resulted in E-cadherin (CDH1) upregulation in CAL51 and MDA-MB-231. EP300 knockdown in T47D resulted in decreased expression of CDH1 and upregulated expression of FOXO3a. EP300 knockout in HCT116 downregulated CDH1. EP300 overexpression in MDA-MB-231 improved drug sensitivity to paclitaxel and doxorubicin. EP300 overexpression reduced aldehyde dehydrogenase + (ALDH) populations in MDA-MB-231 and CAL-51 cell lines, while EP300 modulation had a variable effect on CD44 antigen (CD44)high/CD24 antigen (CD24)low subpopulations in these cell line models. Finally, overexpression of EP300 in MDA-MB-231 demonstrated a decrease in motility and invasion.
Gender terminology research in Afrikaans with corpus data: collecting, enhancing, and finding meaning
Creators: name: Trollip, Benito
Publisher: name: Zenodo
Year: 2021
Subjects: subject: Digital Humanities
subject: Gender studies
subject: Linguistics
subject: FOS: Languages and literature
subject: Afrikaans
subject: Pronouns

description: Slides for the Global Outlook :: Digital Humanities seminar.
PRICE VARIABILITY OR RIGIDITY IN THE FOOD-RETAILING SECTOR? THEORETICAL ANALYSIS AND EVIDENCE FROM GERMAN SCANNER DATA
Creators: name: Herrmann, Roland
name: Moeser, Anke
name: Herrmann, Roland
name: Moeser, Anke
Publisher: name: Unknown
Year: 2003
Subjects: Agribusiness
Industrial Organization

description: In many industrialized countries, the grocery-retailing sector exhibits a strong and in-creasing market concentration. Hence, it is important to understand retail pricing for many questions related to market power in the marketing chain and to agricultural and food policies. We analyze intertemporal pricing of grocery retailers in Germany with a large set of scanner data for processed foods. In theory, food prices could be rather variable, e.g. due to fluctuating commodity prices in a competitive world, or rather rigid, e.g. due to price adjustment costs. We elaborate that retail sales are crucial and raise food price variability at the points of sale. Despite this, prices are rather rigid and often do not change for many weeks. Moreover, pricing strategies for identical brands vary strongly across retailers. Retailers seem to have differential pricing strategies and, thus, market power. This casts substantial doubt on the assumption of a competitive price transmission in the marketing channel underlying most analyses in agricultural economics.
TARIFF RATE QUOTAS: DOES ADMINISTRATION MATTER?
Creators: name: Monnich, Christina
name: Monnich, Christina
Publisher: name: Unknown
Year: 2003
Subjects: International Relations/Trade

description: At the Uruguay Round, tariff rate quotas (TRQs) were in-tended to serve two purposes: first, to prevent that tariffication would lead - at least on the short term - to a deterioration of market access and second, to create new, minimum market access. The since then observed fill rates do not match with these intentions, being often rather low. A wide-held suspicion explains this with tariff quota administration imposing an extra barrier to trade. It is the aim of this paper to test whether different administrative methods do indeed contribute to explain variation in fill rates and if so, how. A censored regression model for panel data was developed and applied to the EU's TRQs for the years 1995-2000. The data supported the presumption that ad-ministration matters, sometimes in surprising ways.
Coronavirus and the widening educational digital divide: The perfect storm for inequalities?
Creators: name: Marcellis, Nathalie De
name: Munoz, Mark
name: Warin, Thierry
Publisher: name: figshare
Year: 2020
Subjects: subject: Education
subject: 140204 Economics of Education
subject: FOS: Economics and business

description: Education has been forever transformed in a span of a few short weeks. In this article, as professors at the crossroad between education and technology (and data science in particular), we want to discuss the potential impact of Covid-19 and highlight the need for public policy responses on learning and academic performance of pupils. Many troubling issues remain unanswered – are students who are suddenly forced into online education prepared for it? Do all have access to high-speed internet connection? Do all possess suitable computers to allow them to succeed? Do students belonging to wealthier families have an unfair advantage over the poorer families since they have more tech equipment? Are we experiencing a digital divide in education, which can be even beyond the traditional societal dimensions?
Magnetodielectric effect without multiferroic coupling
Creators: name: Catalan, G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The existence of a magnetodielectric (magnetocapacitance) effect is often used as a test for multiferroic behavior in new material systems. However, strong magnetodielectric effects can also be achieved through a combination of magnetoresistance and the Maxwell-Wagner effect, unrelated to multiferroic coupling. The fact that this resistive magnetocapacitance does not require multiferroic materials may be advantageous for some practical applications. Conversely, it also implies that magnetocapacitance per se is not sufficient to establish multiferroic coupling.
description: Submitted to Applied Physics Letters; 13 pages, 3 figures
Towards the Solution of an Extremal Problem Concerning the Wiener Polarity Index of Alkanes
Creators: name: Noureen, Sadia
name: Bhatti, Akhlaq Ahmad
name: Ali, Akbar
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: The Wiener polarity index $W_p$, one of the most studied molecular structure descriptors, was devised by the chemist Harold Wiener for predicting the boiling points of alkanes. The index $W_p$ for chemical trees (chemical graphs representing alkanes) is defined as the number of unordered pairs of vertices at distance 3. A vertex of a chemical tree with the degree at least 3 is called a branching vertex. A segment of a chemical tree $T$ is a path-subtree $S$ whose terminal vertices have degrees different from 2 in $T$ and every internal vertex (if exists) of $S$ has degree 2 in $T$. In this paper, the best possible sharp upper and lower bounds on the Wiener polarity index $W_p$ are derived for the chemical trees of order $n$ with a given number of branching vertices or segments, and the corresponding extremal chemical trees are characterized. As a consequence of the derived results, an open problem concerning the maximal $W_p$ value of chemical trees with a fixed number of segments or branching vertices is solved.
description: 16 pages
High-pT Direct-Photon Results from PHENIX
Creators: name: Reygers, Klaus
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Direct-photon measurements in p+p and Au+Au collisions at sqrt{s_{NN}} = 200 GeV from the PHENIX experiment are presented. The p+p results are found to be in good agreement with next-to-leading-order (NLO) perturbative QCD calculations. Direct-photon yields in Au+Au collisions scale with the number of inelastic nucleon-nucleon collisions and don't exhibit the strong suppression observed for charged hadrons and neutral pions. This observation is consistent with models which attribute the suppression of high-pT hadrons to energy loss of quarks and gluons in the hot and dense medium produced in Au+Au collisions at RHIC.
description: 5 pages, 3 figures, to be published in the proceedings of the PHOTON2005 International Conference on the Structure and Interactions of the Photon, Warsaw, Aug. 31 - Sep. 4, 2005
Die Licht-Erscheinung bei der Taufe Jesu und der Ursprung des Epiphaniefestes
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 78 (1994): Oriens christianus, Band 78
Rabi oscillations and Ramsey-type pulses in ultracold bosons: Role of interactions
Creators: name: Guan, Q.
name: Bersano, T. M.
name: Mossman, S.
name: Engels, P.
name: Blume, D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Double-well systems loaded with one, two, or many quantum particles give rise to intriguing dynamics, ranging from Josephson oscillation to self-trapping. This work presents theoretical and experimental results for two distinct double-well systems, both created using dilute rubidium Bose-Einstein condensates with particular emphasis placed on the role of interaction in the systems. The first is realized by creating an effective two-level system through Raman coupling of hyperfine states. The second is an effective two-level system in momentum space generated through the coupling by an optical lattice. Even though the non-interacting systems can, for a wide parameter range, be described by the same model Hamiltonian, the dynamics for these two realizations differ in the presence of interactions. The difference is attributed to scattering diagrams that contribute in the lattice coupled system but vanish in the Raman coupled system. The internal dynamics of the Bose-Einstein condensates for both coupling scenarios is probed through a Ramsey-type interference pulse sequence, which constitutes a key building block of atom interferometers. These results have important implications in a variety of contexts including lattice calibration experiments and momentum space lattices used for quantum analog simulations.
description: 20 pages and 10 figures
ENHANCING THE FINANCIAL AND MARKETING PERFORMANCE OF FIRMS IN THE SMOKED AND PROCESSED MEAT INDUSTRY
Creators: name: Siebert, John W.
name: Nayga, Rodolfo M.
name: Thelen, Gina C.
name: Siebert, John W.
name: Nayga, Rodolfo M.
name: Thelen, Gina C.
Publisher: name: Unknown
Year: 2000
Subjects: Agribusiness

description: Small smoked and processed meat manufacturers constitute a unique cottage industry in Texas. This paper assesses ways for such firms to improve their financial performance through better marketing strategies. The results indicate that, on average, small firms tend to be the most profitable. This is true whether size is measured in terms of dollars, pounds, or number of employees. The more profitable firms tend to be those that are located in rural areas or in shopping centers; those that make the majority of their sales at their own stores; those that do less of their own distribution; and those that emphasize fresh meat sales and de-emphasize jerky sales.
Slow light in photonic crystals
Creators: name: Figotin, A.
name: Vitebskiy, I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Optics (physics.optics)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: The problem of slowing down light by orders of magnitude has been extensively discussed in the literature. Such a possibility can be useful in a variety of optical and microwave applications. Many qualitatively different approaches have been explored. Here we discuss how this goal can be achieved in linear dispersive media, such as photonic crystals. The existence of slowly propagating electromagnetic waves in photonic crystals is quite obvious and well known. The main problem, though, has been how to convert the input radiation into the slow mode without loosing a significant portion of the incident light energy to absorption, reflection, etc. We show that the so-called frozen mode regime offers a unique solution to the above problem. Under the frozen mode regime, the incident light enters the photonic crystal with little reflection and, subsequently, is completely converted into the frozen mode with huge amplitude and almost zero group velocity. The linearity of the above effect allows to slow light regardless of its intensity. An additional advantage of photonic crystals over other methods of slowing down light is that photonic crystals can preserve both time and space coherence of the input electromagnetic wave.
description: 96 pages, 12 figures
FOOD SAFETY IN THE TWENTY-FIRST CENTURY
Creators: name: Murano, Elsa A.
name: Murano, Elsa A.
Publisher: name: Unknown
Year: 2000
Subjects: Food Consumption/Nutrition/Food Safety

description: The past decade has taught us that pathogenic microorganisms are adapting themselves to processing treatments and environmental conditions once thought to be effective in controlling their proliferation. Genetic exchange is sprouting new varieties of bacterial strains with increased abilities to cause disease. The scientific community must adopt a proactive approach, including an aggressive research agenda that seeks to determine the ecology of the food production and processing environments, as well as the basic biology of pathogenic organisms. In addition, it is crucial that we develop a well-integrated educational strategy that seeks to educate industry and consumers.