cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Covid19: unless one gets everyone to act, policies may be ineffective or even backfire
Creators: name: Muscillo, Alessio
name: Pin, Paolo
name: Razzolini, Tiziano
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: The diffusion of COVID19 is calling governments and public health authorities to interventions that limit new infections and contain the expected number of critical cases and deaths. Most of these measures rely on the compliance of people, who are asked to reduce their social contacts to a minimum. In this note we argue that individuals' adherence to prescriptions and reduction of social activity may not be efficacious if not implemented robustly on all social groups, especially on those characterized by intense mixing patterns. Actually, it is possible that, if those who have many contacts reduce them proportionally less than those who have few, then the effect of a policy could backfire: the disease would take more time to die out, up to the point that it could become endemic. In a nutshell, unless one gets everyone to act, and specifically those who have more contacts, a policy may even be counterproductive.
title: Rola współczesnego architekta jako kreatora przestrzeni i współtwórcy modelu opieki medycznej w Polsce
Creators: name: Pruszewicz-Sipińska, Ewa
Publisher: name: Publishing House of Poznan University of Technology
Year: 2020

description: Zeszyty Naukowe Politechniki Poznańskiej. Architektura, Urbanistyka, Architektura wnętrz, 1, 5-16
Additional file 7 of An exploratory assessment of the legislative framework for combating counterfeit medicines in South Africa
Creators: name: Moshoeshoe, R. J.
name: Enslin, G. M.
name: Katerere, D. R.
Publisher: name: figshare
Year: 2022
Subjects: subject: Law
subject: FOS: Law

description: Additional file 7. (addendum G): SA legislative framework.
Heuristics from curating and exhibiting game art n the 21st century
Creators: name: Grace, Lindsay D.
Publisher: name: American University
Year: 2023

description: This paper outlines experiences and lessons learned in organizing a variety of digital art exhibits for small and large scale events. The perspective is provided as a cross-disciplinary set of heuristics, drawing on the decade long experience of the curator-artist and paying particular attention to playable electronic media (e.g. games and toys) as installation works in an art context. Lessons learned from exhibits organized or co-organized by the author in the United States, Europe and Asia are shared. These events were offered with support from the Smithsonian American Art Museum, Leuphana University, the University of Utah, Abertay University and others. Additional observations are provided as an artist who has exhibited at more than 40 events in the last decade. Formally the paper offers an ontology for defining distinguishing between exhibits, festivals and showcases. It is not the intention of the author to create a compendium of exhibition and curation practice. Instead the aim is to provide context and a starting point for the evolving intellectual examination of curatorial practices around digital games. It is hoped that these assertions support the growth of such work by providing a starting point for other practitioners.
Neutrino Opacities in Nuclear Matter
Creators: name: Burrows, Adam
name: Reddy, Sanjay
name: Thompson, Todd A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Neutrino-matter cross sections and interaction rates are central to the core-collapse supernova phenomenon and, very likely, to the viability of the explosion mechanism itself. In this paper, we describe the major neutrino scattering, absorption, and production processes that together influence the outcome of core collapse and the cooling of protoneutron stars. One focus is on energy redistribution and many-body physics, but our major goal is to provide a useful resource for those interested in supernova neutrino microphysics.
description: 47 pages, including figures, to be published in a special issue of Nucl. Phys. A
How to use combinatorial optimization problems (Traveling Salesman Problem) for procedural landscape generation
Creators: name: Ehret, Alan
name: Jamieson, Peter
name: Grace, Lindsay
Publisher: name: American University
Year: 2023

description: In this paper, we examine how the traveling salesman problem (a combinatorial optimization problem) can be used to create virtual landscapes. For this work, we show how the entire search space of ten city TSP instances can be organized into virtual landscapes, and illustrate how by changing the TSP instance problem we can control some properties of these landscapes. We provide three different methodologies for producing landscapes and show results for TSP problem instances. Our results show that our one of our methodologies generates the best aesthetically looking results and can be controlled by the problem.
Electronic properties of alkali-metal loaded zeolites -- a "supercrystal" Mott insulator
Creators: name: Arita, Ryotaro
name: Miyake, Takashi
name: Kotani, Takao
name: van Schilfgaarde, Mark
name: Oka, Takashi
name: Kuroki, Kazuhiko
name: Nozue, Yasuo
name: Aoki, Hideo
Publisher: name: arXiv
Year: 2003
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: First-principles band calculations are performed for the first time for an open-structured zeolite (LTA) with guest atoms (potassium) introduced in their cages. A surprisingly simple band structure emerges, which indicates that this system may be regarded as a "supercrystal", where each cluster of guest atoms with diameter $\sim$10Åacts as a "superatom" with well-defined $s$- and $p$-like orbitals, which in turn form the bands around the Fermi energy. The calculated Coulomb and exchange energies for these states turn out to be in the strongly-correlated regime. With the dynamical mean-field theory we show the system should be on the Mott-insulator side, and, on a magnetic phase diagram for degenerate-orbital systems, around the ferromagnetic regime, in accord with experimental results. We envisage this class of systems can provide a new avenue for materials design.
description: 4 pages, 4 figures
The Higgs and Leptophobic Force at the LHC
Creators: name: Perez, Pavel Fileviez
name: Golias, Elliot
name: Murgui, Clara
name: Plascencia, Alexis D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The Higgs boson could provide the key to discover new physics at the Large Hadron Collider. We investigate novel decays of the Standard Model (SM) Higgs boson into leptophobic gauge bosons which can be light in agreement with all experimental constraints. We study the associated production of the SM Higgs and the leptophobic gauge boson that could be crucial to test the existence of a leptophobic force. Our results demonstrate that it is possible to have a simple gauge extension of the SM at the low scale, without assuming very small couplings and in agreement with all the experimental bounds that can be probed at the LHC.
description: 19 pages, 10 figures, 3 appendices. v2: Accepted for publication in JHEP. Comments and references added
How to use combinatorial optimization problems (Traveling Salesman Problem) for procedural landscape generation
Creators: name: Ehret, Alan
name: Jamieson, Peter
name: Grace, Lindsay
Publisher: name: Miami University; American University (Washington, D.C.)
Year: 2023
Subjects: classificationCode: 4607
subject: Graphics, augmented reality and games

description: In this paper, we examine how the traveling salesman problem (a combinatorial optimization problem) can be used to create virtual landscapes. For this work, we show how the entire search space of ten city TSP instances can be organized into virtual landscapes, and illustrate how by changing the TSP instance problem we can control some properties of these landscapes. We provide three different methodologies for producing landscapes and show results for TSP problem instances. Our results show that our one of our methodologies generates the best aesthetically looking results and can be controlled by the problem.
title: Metoda kompensacji przestrzennych potrzeb w budynku szpitala
Creators: name: Kozaczko, Mieczysław
Publisher: name: Publishing House of Poznan University of Technology
Year: 2020

description: Zeszyty Naukowe Politechniki Poznańskiej. Architektura, Urbanistyka, Architektura wnętrz, 1, 17-27
A Riemann-Hilbert problem for biorthogonal polynomials
Creators: name: Kuijlaars, A. B. J.
name: McLaughlin, K. T-R
Publisher: name: arXiv
Year: 2003
Subjects: subject: Complex Variables (math.CV)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We characterize the biorthogonal polynomials that appear in the theory of coupled random matrices via a Riemann-Hilbert problem. Our Riemann-Hilbert problem is different from the ones that were proposed recently by Ercolani and McLaughlin, Kapaev, and Bertola et al. We believe that our formulation may be tractable to asymptotic analysis.
description: 10 pages
The key role of magnetic fields in binary neutron star mergers
Creators: name: Ciolfi, Riccardo
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The first multimessenger observation of a binary neutron star (BNS) merger in August 2017 demonstrated the huge scientific potential of these extraordinary events. This breakthrough led to a number of discoveries and provided the best evidence that BNS mergers can launch short gamma-ray burst (SGRB) jets and are responsible for a copious production of heavy r-process elements. On the other hand, the details of the merger and post-merger dynamics remain only poorly constrained, leaving behind important open questions. Numerical relativity simulations are a powerful tool to unveil the physical processes at work in a BNS merger and as such they offer the best chance to improve our ability to interpret the corresponding gravitational wave (GW) and electromagnetic emission. Here, we review the current theoretical investigation on BNS mergers based on general relativistic magnetohydrodynamics simulations, paying special attention to the magnetic field as a crucial ingredient. First, we discuss the evolution, amplification, and emerging structure of magnetic fields in BNS mergers. Then, we consider their impact on various critical aspects: (i) jet formation and the connection with SGRBs, (ii) matter ejection, r-process nucleosynthesis, and radiocatively-powered kilonova transients, and (iii) post-merger GW emission.
description: Invited review for the Topical Collection on BNS mergers of the journal General Relativity and Gravitation; 30 pages, 7 figures, accepted version
Additional file 8 of An exploratory assessment of the legislative framework for combating counterfeit medicines in South Africa
Creators: name: Moshoeshoe, R. J.
name: Enslin, G. M.
name: Katerere, D. R.
Publisher: name: figshare
Year: 2022
Subjects: subject: Law
subject: FOS: Law

description: Additional file 8. (addendum H): Criteria for trustworthiness in the research process.
Objects of affection : Kissing games on mobile devices
Creators: name: Grace, Lindsay
Publisher: name: American University
Year: 2023

description: This brief paper provides general context in the emerging mobile game type, affection games. Affection games require players to flirt, hug, or kiss to meet their goals in the game. To date, the largest subset of these games is kissing games. The paper provides a general analysis of the 10 most widely distributed kissing games in 2013 and 2014, which account for more than 3,000,0000 mobile game installations. To add detail to the overview, two case studies are provided which exemplify physical device kissing and virtual in-game kissing. The download activity, player comments, and history of the games are used to provide a simple overview of affection game characteristics as they relate to human-computer interaction and play. Such analysis provides a peek into the mildly taboo space of affection games and the ways in which mobile developers are effecting the genre.
title: Cultural differences in mate preference
Creators: name: Zhang, Lingshan
Publisher: name: University of Glasgow
Year: 2021
Subjects: subject: Sex difference, mate preference, cultural difference.

description: Although there is a large literature on sex differences in human mate preferences, this literature has focused largely on mate preferences in western cultures. In particular, there have been very few studies comparing mate preferences in Eastern and Western cultures. The studies reported in this thesis sought to address this issue. The first empirical chapter (Chapter 2) reports results from a Registered Report that compared sex differences in preferences for physical attractiveness and status in samples of Chinese and UK students. Consistent with previous work, preferences for physical attractiveness were stronger in men than in women, and preferences for status were stronger in women than men. This latter sex difference was more pronounced in Chinese than UK participants, however. The second empirical chapter (Chapter 3) reports results from a large-study that attempted to replicate the influential finding that mate-preference sex differences are smaller in countries with greater gender equality. Although robust sex differences in mate preferences were observed, and the magnitude of these sex differences differed among countries, there was little evidence that country-level differences in gender equality predicted the magnitude of mate-preference sex differences. Chapters 2 and 3 used trait-rating and trait-taking tasks to assess mate preferences. By contrast with this approach, the study reported in the final empirical chapter (Chapter 4) compared data-driven models of human face preferences to compare the information Chinese and UK participants used to assess the facial attractiveness of potential mates. This comparison revealed subtle differences in the information used by Chinese and UK participants. Collectively, these findings show evidence for robust sex and cultural differences in human mate preferences. The causes of these cultural differences remain unclear, however.
Reduction of Courant algebroids and generalized complex structures
Creators: name: Bursztyn, Henrique
name: Cavalcanti, Gil R.
name: Gualtieri, Marco
Publisher: name: arXiv
Year: 2005
Subjects: subject: Differential Geometry (math.DG)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics

description: We present a theory of reduction for Courant algebroids as well as Dirac structures, generalized complex, and generalized Kähler structures which interpolates between holomorphic reduction of complex manifolds and symplectic reduction. The enhanced symmetry group of a Courant algebroid leads us to define \emph{extended} actions and a generalized notion of moment map. Key examples of generalized Kähler reduced spaces include new explicit bi-Hermitian metrics on $\CC P^2$.
description: 34 pages. Presentation greatly improved, one subsection added, errors corrected, references added. v3: a few changes in the presentation, material slightly reorganized, final version to appear in Adv. in Math
A Nonconvex Low-Rank Tensor Completion Model for Spatiotemporal Traffic Data Imputation
Creators: name: Chen, Xinyu
name: Yang, Jinming
name: Sun, Lijun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Sparsity and missing data problems are very common in spatiotemporal traffic data collected from various sensing systems. Making accurate imputation is critical to many applications in intelligent transportation systems. In this paper, we formulate the missing data imputation problem in spatiotemporal traffic data in a low-rank tensor completion (LRTC) framework and define a novel truncated nuclear norm (TNN) on traffic tensors of location$\times$day$\times$time of day. In particular, we introduce an universal rate parameter to control the degree of truncation on all tensor modes in the proposed LRTC-TNN model, and this allows us to better characterize the hidden patterns in spatiotemporal traffic data. Based on the framework of the Alternating Direction Method of Multipliers (ADMM), we present an efficient algorithm to obtain the optimal solution for each variable. We conduct numerical experiments on four spatiotemporal traffic data sets, and our results show that the proposed LRTC-TNN model outperforms many state-of-the-art imputation models with missing rates/patterns. Moreover, the proposed model also outperforms other baseline models in extreme missing scenarios.
Life Cycle Assessment report Thunderbird Old Arena
Creators: name: Fan, Dennis
name: Geyer, Sean
name: Kernahan, Hillary
name: Ruddock, Josh
Publisher: name: The University of British Columbia
Year: 2012

description: Prior to the 2010 Vancouver Winter Olympics several structures were built for recreational purposes. A life cycle assessment (LCA) was carried out on two of the event arenas built for the 2010 Winter Olympics. One of the sites, the Thunderbird Arena was a renovation of an existing recreational complex. The LCA presented in this report is for the pre-existing complex, which consists of three main buildings. The scope focuses on the materials manufacturing and the construction of the buildings (i.e. maintenance and usage are disregarded) and the results were used to compare the impacts of the materials used during construction to aid with future design decisions. Modeling was conducted using On-Screen Takeoff 3 and Athena Impact Estimator (IE) software. These tools allowed for a Bill of Materials (BoM) to be generated as well as characterisations of the total environmental impacts due to materials manufacturing, building construction, and transportation. The TRACI method was used to report values on fossil fuel consumption, weighted resource use, global warming potential, acidification potential, human health respiratory, eutrophication potential, ozone depletion, and smog potential. It was found from the BoM that the top 5 materials used during the construction were aggregate rock, rebar, galvanized sheeting, steel tubing, and concrete block. A sensitivity analysis was then run on the materials to determine the change in impacts based off a 10% increase in each case. It was found that the most significant change in impact on construction was the 10% increase in rebar. [Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”]
Projecting International Demand for and Supply of Protein Feed
Creators: name: McGuigan, S. M.
name: Nieuwoudt, W. L.
name: McGuigan, S. M.
name: Nieuwoudt, W. L.
Publisher: name: Unknown
Year: 2001
Subjects: Crop Production/Industries
Demand and Price Analysis

description: South Africa is currently a net importer of protein meal with 1998 imports exceeding Rl billion. Information regarding the cost of future imports will assist South African decision makers with regard to stimulating the South African protein industry. A spreadsheet model which readily allows scenario analysis is developed to project future supply of and demand for protein feed. Estimated price elasticities of supply and demand enable the model to project equilibrium consumption and price until 2020. The model incorporates as growth parameters: income growth, population growth and income elasticity of demand. It also allows for income elasticities to decline as incomes rise. Assuming a 3% annual growth in supply, the model forecasts that real price for protein meal will remain relatively constant to 2020. However, if supply increases linearly price is forecast to increase 22% by 2020. Developing Asia, notably China, accounts for most demand growth and projections are sensitive to growth assumptions for China.
Indirect signals from light neutralinos in supersymmetric models without gaugino mass unification
Creators: name: Bottino, A.
name: Donato, F.
name: Fornengo, N.
name: Scopel, S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We examine indirect signals produced by neutralino self-annihilations, in the galactic halo or inside celestial bodies, in the frame of an effective MSSM model without gaugino-mass unification at a grand unification scale. We compare our theoretical predictions with current experimental data of gamma-rays and antiprotons in space and of upgoing muons at neutrino telescopes. Results are presented for a wide range of the neutralino mass, though our discussions are focused on light neutralinos. We find that only the antiproton signal is potentially able to set constraints on very low-mass neutralinos, below 20 GeV. The gamma-ray signal, both from the galactic center and from high galactic latitudes, requires significantly steep profiles or substantial clumpiness in order to reach detectable levels. The up-going muon signal is largely below experimental sensitivities for the neutrino flux coming from the Sun; for the flux from the Earth an improvement of about one order of magnitude in experimental sensitivities (with a low energy threshold) can make accessible neutralino masses close to O, Si and Mg nuclei masses, for which resonant capture is operative.
description: 17 pages, 1 tables and 5 figures, typeset with ReVTeX4. The paper may also be found at http://www.to.infn.it/~fornengo/papers/indirect04.ps.gz or through http://www.astroparticle.to.infn.it/. Limit from BR(Bs--> mu+ mu-) added
Additional file 3 of Transcranial magnetic stimulation and amyloid markers in mild cognitive impairment: impact on diagnostic confidence and diagnostic accuracy
Creators: name: Padovani, Alessandro
name: Benussi, Alberto
name: Cotelli, Maria Sofia
name: Ferrari, Clarissa
name: Cantoni, Valentina
name: Dell’Era, Valentina
name: Turrone, Rosanna
name: Paghera, Barbara
name: Borroni, Barbara
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Neuroscience
subject: Pharmacology
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Hematology

description: Additional file 3: Table S1. Cerebrospinal fluid markers, amyloid PET imaging and TMS parameters in MCI subtypes according to “gold standard” diagnosis.
Minimum Economic Farm Size: A Case Study of the Smallholder Tea Sub-Section in Kenya
Creators: name: Kavoi, M. M.
name: Owuor, P. O.
name: Siele, D. K.
name: Kavoi, M. M.
name: Owuor, P. O.
name: Siele, D. K.
Publisher: name: Unknown
Year: 2001
Subjects: Crop Production/Industries
Land Economics/Use

description: The average area under tea in the smallholder sub-sector is approximately 0.27 ha. The population pressure in the tea growing districts is quite high compared to the neighbouring districts without the enterprise. The robust population growth in tea growing zones translates into continued sub-division of tea farms to school leavers who cannot get alternative employment in other sectors of the economy. This scenario is a potential threat to the future of the smallholder tea production in Kenya. The problem of continued sub-division of tea farms has degenerated into what has been termed as "uneconomic tea farm sizes". The objective of this study was to determine the optimal economic number of bushes a tea farm should have below which it would be referred to as "uneconomic tea farm size." A profit function model was fitted on 259 smallholder farms. It is concluded that all tea farms in these subsets are more successful in responding to the set of prices they face (Price efficiency) and /or because they have higher quantities of fixed factors of production, including entrepreneurship (technical efficiency).
Objects of affection : Kissing games on mobile devices
Creators: name: Grace, Lindsay
Publisher: name: Foundations of Digital Games (FDG)
Year: 2023
Subjects: classificationCode: 4607
subject: Graphics, augmented reality and games

description: This brief paper provides general context in the emerging mobile game type, affection games. Affection games require players to flirt, hug, or kiss to meet their goals in the game. To date, the largest subset of these games is kissing games. The paper provides a general analysis of the 10 most widely distributed kissing games in 2013 and 2014, which account for more than 3,000,0000 mobile game installations. To add detail to the overview, two case studies are provided which exemplify physical device kissing and virtual in-game kissing. The download activity, player comments, and history of the games are used to provide a simple overview of affection game characteristics as they relate to human-computer interaction and play. Such analysis provides a peek into the mildly taboo space of affection games and the ways in which mobile developers are effecting the genre.
CP violation and electric-dipole-moment at low energy tau-pair production
Creators: name: Bernabeu, J.
name: Gonzalez-Sprinberg, G. A.
name: Vidal, J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: CP violation at low energy is investigated at the tau electromagnetic vertex. High statistics at B factories, and on top of the Upsilon resonances, allows a detailed investigation of CP-odd observables related to the tau-pair production. The contribution of the tau electric dipole moment is considered in detail. We perform an analysis independent from the high energy data by means of correlation and linear spin observables at low energy. We show that different CP-odd asymmetries, associated to the normal-transverse and normal-longitudinal correlation terms can be measured at low energy accelerators, both at resonant and non resonant energies. These observables allow to put stringent and independent bounds to the tau electric dipole moment that are competitive with other high or low energy results.
description: 18 pages, 2 figures, references added, minor changes in section 3 and 5, to be published in Nucl.Phys.B
How Transaction Costs Influence Cattle Marketing Decisions in the Northern Communal Areas of Namibia
Creators: name: De Bruyn, P.
name: De Bruyn, J. N.
name: Vink, N.
name: Kristen, J. F.
name: De Bruyn, P.
name: De Bruyn, J. N.
name: Vink, N.
name: Kristen, J. F.
Publisher: name: Unknown
Year: 2001
Subjects: subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business

description: In this article a non-linear dynamic model is applied to determine the influence of transaction costs on the marketing decisions of cattle owners in the Northern Communal Areas of Namibia. The article tests the hypothesis that a producer's choice between alternative marketing options is influenced by transaction costs. The study shows that a number of transaction cost variables (herd size, distance from auction points, information and risk) have a significant effect on the proportion sold to Meatco and thus indirectly on the choice of marketing channels.
Persuasive content : Understanding in-game advertising retention in players and onlookers
Creators: name: Grace, Lindsay
name: Janssen, Dirk P.
name: Coyle, James R.
Publisher: name: Foundations of Digital Games (FDG)
Year: 2023
Subjects: classificationCode: 4607
subject: Graphics, augmented reality and games

description: The continued interest in advertising and entertainment brings about important questions about the effectiveness of advertising when it is competing for attention with entertainment content. This research provides the results of an efficacy analysis of ingame advertising within the controlled environment of a race game, an environment in which advertising blends in naturally. The experiment was designed to understand the effectiveness of in-game advertising for both players and onlookers. It takes into account both the player’s retention and the onlooker’s attention as an inroads to understanding how in-game advertising works on those who participate in electronic entertainment and those who watch it. The results indicate that such advertising is more effective for onlookers than for players.
title: Preparation of Pt-based Bimetallic Catalysts for the Oxygen Reduction Reaction in PEM Fuel Cells
Creators: name: Qian, Yangdong
Publisher: name: The Open University
Year: 2004

description: This work includes the preparation and characterization of carbon supported Pt-based bimetallic electrocatalysts and their subsequent electrochemical evaluation for the oxygen-reduction reaction (ORR) in polymer electrolyte membrane (PEM) fuel cells. Monometallic Pt/C was modified using a surface organometallic chemistry (SOMC) route to prepare a series of PtFe/C, PtCr/C, PtNi/C and PtCo/C bimetallic electrocatalysts. The catalysts were studied as prepared, and after a range of different heat treatments.

 Physical characterization of unmodified Pt/C and the PtM/C bimetallic electrocatalysts was performed using a range of techniques. UV-visible spectroscopy, ICP, TGA and DSC were used to analyse the composition of the electrocatalysts and to postulate a reaction mechanism for the SOMC reaction during the electrocatalyst preparation. TEM/BDX, BET, chemisorption and X-ray diffraction examined particle size, showing that electrocatalysts prepared using the SOMC method sinter less readily than those prepared by conventional methods, and also provided evidence that a selective reaction had occurred between the reduced surface Pt of the Pt/C catalyst and the organometallic precursor of the second metal. XRD and EXAFS indicated that an alloy was formed between the surface Pt and the second metal in many of the heat-treated samples. EXAFS, TPR and XPS were used to examine the metal oxidation states in the PtM/C bimetallic electrocatalysts.

 The PtM/C electrocatalysts were evaluated for the oxygen-reduction reaction (ORR) in PEM fuel cells. The optimum electrocatalyst, was found to be 0.67 PtCr/C after heat treatment at 750 °C; this had high catalytic activity compared with the commercial electrocatalyst, PtCr/C(JM), provided by Johnson Matthey Technology Centre.
Evaluating the Quality of Local Structure Approximation Using Elementary Rule 14
Creators: name: Fukś, Henryk
name: Combert, Francis Kwaku
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: FOS: Physical sciences
subject: 37B15

description: Cellular automata (CA) can be viewed as maps in the space of probability measures. Such maps are normally infinitely-dimensional, and in order to facilitate investigations of their properties, especially in the context of applications, finite-dimensional approximations have been proposed. The most commonly used one is known as the local structure theory, developed by H. Gutowitz et al. in 1987. In spite of the popularity of this approximation in CA research, examples of rigorous evaluations of its accuracy are lacking. In an attempt to fill this gap, we construct a local structure approximation for rule 14, and study its dynamics in a rigorous fashion, without relying on numerical experiments. We then compare the outcome with known exact results.
description: 14 pages, 3 figures
Additional file 6 of Caenorhabditis elegans ETR-1/CELF has broad effects on the muscle cell transcriptome, including genes that regulate translation and neuroblast migration
Creators: name: Ochs, Matthew E.
name: McWhirter, Rebecca M.
name: Unckless, Robert L.
name: Miller, David M.
name: Lundquist, Erik A.
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 6.
Evidence of a first order phase transition between Wigner crystal and Bubble Phases of 2D electrons in higher Landau levels
Creators: name: Lewis, R. M.
name: Chen, Yong
name: Engel, L. W.
name: Tsui, D. C.
name: Ye, P. D.
name: Pfeiffer, L. N.
name: West, K. W.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: For filling factors $ν$ in the range between 4.16 and 4.28, we simultaneously detect {\it two} resonances in the real diagonal microwave conductivity of a two--dimensional electron system (2DES) at low temperature $T \approx 35$ mK. We attribute the resonances to Wigner crystal and Bubble phases of the 2DES in higher Landau Levels. For $ν$ below and above this range, only single resonances are observed. The coexistence of both phases is taken as evidence of a first order phase transition. We estimate the transition point as $ν=4.22$.
description: 4 pages, 3 figs. Revtex4
Characterizing the Radio Quiet Region Behind the Lunar Farside for Low Radio Frequency Experiments
Creators: name: Bassett, Neil
name: Rapetti, David
name: Burns, Jack O.
name: Tauscher, Keith
name: MacDowall, Robert
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Low radio frequency experiments performed on Earth are contaminated by both ionospheric effects and radio frequency interference (RFI) from Earth-based sources. The lunar farside provides a unique environment above the ionosphere where RFI is heavily attenuated by the presence of the Moon. We present electrodynamics simulations of the propagation of radio waves around and through the Moon in order to characterize the level of attenuation on the farside. The simulations are performed for a range of frequencies up to 100 kHz, assuming a spherical lunar shape with an average, constant density. Additionally, we investigate the role of the topography and density profile of the Moon in the propagation of radio waves and find only small effects on the intensity of RFI. Due to the computational demands of performing simulations at higher frequencies, we propose a model for extrapolating the width of the quiet region above 100 kHz that also takes into account height above the lunar surface as well as the intensity threshold chosen to define the quiet region. This model, which we make publicly available through a Python package, allows the size of the radio quiet region to be easily calculated both in orbit or on the surface, making it directly applicable for lunar satellites as well as surface missions.
description: 14 pages, 8 figures, accepted to Advances in Space Research. Additional physical insight such as the skin depth of the lunar material added since previous version. Inset of figure 5 revised to be more legible. Results unchanged
Persuasive content : Understanding in-game advertising retention in players and onlookers
Creators: name: Grace, Lindsay
name: Janssen, Dirk P.
name: Coyle, James R.
Publisher: name: American University
Year: 2023

description: The continued interest in advertising and entertainment brings about important questions about the effectiveness of advertising when it is competing for attention with entertainment content. This research provides the results of an efficacy analysis of ingame advertising within the controlled environment of a race game, an environment in which advertising blends in naturally. The experiment was designed to understand the effectiveness of in-game advertising for both players and onlookers. It takes into account both the player’s retention and the onlooker’s attention as an inroads to understanding how in-game advertising works on those who participate in electronic entertainment and those who watch it. The results indicate that such advertising is more effective for onlookers than for players.
Random Coefficients Analysis of Changes in Meat Consumption Preferences in South Africa
Creators: name: Poonyth, D.
name: Hassan, R.
name: Kristen, J. F.
name: Poonyth, D.
name: Hassan, R.
name: Kristen, J. F.
Publisher: name: Unknown
Year: 2001
Subjects: Food Consumption/Nutrition/Food Safety
Research and Development/Tech Change/Emerging Technologies

description: This study is designed to investigate changes in consumer preferences for meat in South Africa using Kalman random coefficients filtering techniques. The results provide substantial empirical evidence in support of notable changes in meat consumption patterns. The changes in meat consumption pattern can be attributed to changes in the prices of products. The empirical results indicate a long run growth prospect for white meat consumption. This study provides vital information for meat market analysis and projection of meat demand in South Africa.
title: Trendy rozwojowe we współczesnej architekturze mieszkaniowej a starzejące się społeczeństwa
Creators: name: Jastrząb, Tomasz
Publisher: name: Publishing House of Poznan University of Technology
Year: 2020

description: Zeszyty Naukowe Politechniki Poznańskiej. Architektura, Urbanistyka, Architektura wnętrz, 1, 29-44
Molecular environments of the supernova remnant G359.1-0.5
Creators: name: Eppens, L. K.
name: Reynoso, E. M.
name: Lazendic-Galloway, J.
name: Combi, J. A.
name: Colombo, J. F. Albacete
name: -
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report new CO observations and a detailed molecular-line study of the mixed morphology (MM) supernova remnant (SNR) G359.1-0.5, which contains six OH (1720 MHz) masers along the radio shell, indicative of shock-cloud interaction. Observations of 12CO and 13CO J:1-0 lines were performed in a 38x38 arcmin area with the on-the-fly technique using the Kit Peak 12 Meter telescope. The molecular study has revealed the existence of a few clumps with densities around 1,000 cm$^{-3}$ compatible in velocity and position with the OH (1720 MHz) masers. These clumps, in turn, appear to be part of a larger, elongated molecular structure ~34 arcmin long extending between -12.48 and +1.83 km/s, adjacent to the western edge of the radio shell. According to the densities and relative position with respect to the masers, we conclude that the CO clouds depict unshocked gas, as observed in other remnants with OH (1720 MHz) masers. In addition, we investigated the distribution of the molecular gas towards the adjacent gamma-ray source HESS J1745-303 but could not find any morphological correlation between the gamma-rays and the CO emission at any velocity in this region.
description: Accepted for publication in Monthly Notices of the Royal Astronomical Society
Biases and Effectiveness of Extension Servicesto Maize Farmers in Kenya Before and After the Training and Visit System
Creators: name: Hassan, R.
name: Poonyth, D.
name: Hassan, R.
name: Poonyth, D.
Publisher: name: Unknown
Year: 2001
Subjects: Crop Production/Industries
Research and Development/Tech Change/Emerging Technologies

description: The effectiveness of the training and visit (T&V) extension method in reversing typical biases of the previous conventional system of extension services in Kenya was investigated using multinomial logistic regression analysis. The study provided empirical evidence supporting reduction in biases against small-scale, young and uneducated farmers and remote areas. On the other hand, the bias against marginal production environments and women continued under the T&V system, though at lower rates than before. Efficacy of the T&V system was also con.finned through promotion of higher adoption of improved technologies. This was mainly attributed to the effective mechanisms and better quality of information delivered through the indirect contact methods of T&V.
Playing with affections, digitally
Creators: name: Grace, Lindsay
Publisher: name: American University
Year: 2023

description: Affection games require players to flirt, hug, kiss, or make love to meet their goals. They are games whose core actions are affections. They are bereft of the complex narratives of dating simulations and differentiate themselves via short, situated play. In a society that still aligns digital play with violent play, affection games offer sharp and meaningful contrast. Affection games are the make love, not war experience of a contemporary play. These games afford players the opportunity to kiss their favorite celebrity, flirt their way into hearts, or practice pleasing an intimate partner. As a genre with demonstrable growth between 2010 and 2013, they offer an engaging and growing set of case studies.
title: Co-housing jako forma wspierania opieki sąsiedzkiej
Creators: name: Suchecki, Jędrzej
Publisher: name: Publishing House of Poznan University of Technology
Year: 2020

description: Zeszyty Naukowe Politechniki Poznańskiej. Architektura, Urbanistyka, Architektura wnętrz, 1, 45-54
Playing with affections, digitally
Creators: name: Grace, Lindsay
Publisher: name: American University (Washington, D.C.)
Year: 2023
Subjects: classificationCode: 4607
subject: Graphics, augmented reality and games

description: Affection games require players to flirt, hug, kiss, or make love to meet their goals. They are games whose core actions are affections. They are bereft of the complex narratives of dating simulations and differentiate themselves via short, situated play. In a society that still aligns digital play with violent play, affection games offer sharp and meaningful contrast. Affection games are the make love, not war experience of a contemporary play. These games afford players the opportunity to kiss their favorite celebrity, flirt their way into hearts, or practice pleasing an intimate partner. As a genre with demonstrable growth between 2010 and 2013, they offer an engaging and growing set of case studies.
Chiral Lagrangian Parameters for Scalar and Pseudoscalar Mesons
Creators: name: Bardeen, W.
name: Eichten, E.
name: Thacker, H.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The results of a high-statistics study of scalar and pseudoscalar meson propagators in quenched lattice QCD are presented. For two values of lattice spacing, $β=5.7$ ($a \approx .18$ fm) and 5.9 ($a \approx .12$ fm), we probe the light quark mass region using clover improved Wilson fermions with the MQA pole-shifting ansatz to treat the exceptional configuration problem. The quenched chiral loop parameters $m_0$ and $α_Φ$ are determined from a study of the pseudoscalar hairpin correlator. From a global fit to the meson correlators, estimates are obtained for the relevant chiral Lagrangian parameters, including the Leutwyler parameters $L_5$ and $L_8$. Using the parameters obtained from the singlet and nonsinglet pseudoscalar correlators, the quenched chiral loop effect in the nonsinglet scalar meson correlator is studied. By removing this QCL effect from the lattice correlator, we obtain the mass and decay constant of the ground state scalar, isovector meson $a_0$.
description: 36 pages, 12 figures, LaTeX
The psychology of play : Understanding digital game evolution through developmental psychology
Creators: name: Grace, Lindsay D.
name: Spangler, Brooke R.
Publisher: name: Foundations of Digital Games (FDG)
Year: 2023
Subjects: classificationCode: 4607
subject: Graphics, augmented reality and games

description: The purpose of this research is to demonstrate how the pattern of play technologies follows the patterns of play types in developmental psychology. This research provides an overview of dominant theories in developmental psychology and offers evidence of its parallel in play modalities adopted by electronic game audiences. The fundamental benefit of such framing is the potential to offer a future facing understanding of the next generation of play technologies within a variety of environments. Here the researchers have chosen to demonstrate this evolution through the history of arcade game play. However, the researchers conclude with a brief demonstration of how similar developmental stages have been demonstrate in the evolution of portable game systems and home console game interfaces. This approach describes game design and player preference not as evolutionary, but as developmental. It demonstrates game design and player preference through a developmental framework, which mirrors the maturation of an individual. Players mature into new play modalities in much the way humans mature into play stages.
Additional file 3 of The long-term health effects of attending a selective school: a natural experiment
Creators: name: Butler, Jessica
name: Corri Black
name: Craig, Peter
name: Dibben, Chris
name: Dundas, Ruth
name: Boon, Michelle Hilton
name: Johnston, Marjorie
name: Popham, Frank
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Cancer

description: Additional file 3: Figure S1. Assessment of the smoothness of the confounding variables across the selective schooling cut-point. Population is the study sample (n = 5039) and points are means of 50 people. Figures A, D and G in first column show the 11+ exam score vs the confounder. Figures B, E and H in the second column show the same data with the population separated by selective (open orange triangles) and non-selective (open blue circles) secondary school attendance. The line shows the estimated effect size of secondary school attendance at the cut-point extrapolated across the optimal bandwidth. Figures C, F and I in the third column show re-estimates of the effect size of secondary school attendance for a range of population sizes around the cut-point (bandwidth sizes). The effect size estimate at the predicted optimal bandwidth (reported in Table 3) is shown as a dashed line.
Farm Program Participation and Crop Mix Decisions Under Alternative Acreage Restriction Provisions of the 1985 Farm Bill
Creators: name: Mims, Anne M.
name: Duffy, Patricia A.
name: Young, George
name: Mims, Anne M.
name: Duffy, Patricia A.
name: Young, George
Publisher: name: Unknown
Year: 1988
Subjects: Agricultural and Food Policy
Crop Production/Industries
Political Economy

description: The 1985 Farm Bill departs from recent farms bills in moving toward more restrictive acreage control. The change from a two- to a five-year average in calculating base acreage and enforcement of limited crosscompliance appear to significantly alter crop mix decisions on representative Alabama cotton farms.