cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quantum versus classical approach of dechanneling and incoherent electromagnetic processes in aligned crystals
Creators: name: Artru, Xavier
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Particles traveling in aligned crystals at small angles w.r.t. crystallographic axes or planes are principally steered by the continuous Lindhard potential. This interaction conserves the energy E, the longitudinal momentum p_parallel, the transverse energy of the particle E_perp and is elastic concerning the crystal quantum state. At high enough energy the particle motion is quasi-classical. The time-dependent fluctuations of the positions of the atoms or of the electrons of the crystal create a residual potential, on which the particle can scatter. This interaction does not conserve the previous quantities and is inelastic for the crystal. We compare its treatments with the classical binary collision model and with a phenomenological quantum model. The classical dechanneling rate is estimated to be several ten per cent larger than the quantum one. The influence of correlated vibrations of neighboring atoms is discussed.
description: 8 pages, 2 figures ; Presented at "RREPS-19" Sept. 2019, Belgorod, Russia. This is the Accepted Manuscript version of an article accepted for publication in Journal of Instrumentation. Neither SISSA Medialab Srl nor IOP Publishing Ltd is responsible for any errors or omissions in this version of the manuscript or any version derived from it
title: Gendered careers in science, engineering and technology: transforming spaces and changing identities
Creators: name: Herman, Clementine Channah
Publisher: name: The Open University
Year: 2015

description: Women remain under represented in science, engineering and technology (SET) professions, and for women who take career breaks returning can be difficult due to the persistence of gendered organisational cultures within these sectors. The papers collated for this PhD by Published Work bring a critical analysis to the experiences of women who return to work in SET after taking a career break and in particular the locations, both temporal and spatial, in which their careers and professional identities are developed, sustained and rekindled. Reflecting on research and practice spanning more than 20 years, the papers illustrate the development of work on gendered careers in SET over this period. Specifically they show how structured interventions and strategies including training, education and career enhancing opportunities within employing organisations, as well as in women-only training centres and online spaces, have been able to support women’s career development in these sectors enabling them to enter, progress or return to SET professions. The papers draw on a series of studies, predominantly in the UK but also in other European countries, based on a total of 76 biographical narrative interviews with women SET professionals. This is supplemented with survey data from 273 respondents, as well as focus group data and online forum postings. The papers bring a critical gender perspective to discourses about employability and careers in STEM, drawing on theoretical concepts such as doing gender, gendered organisations, sense of entitlement, empowerment and feminist pedagogy. Key contributions include the development of a life course perspective on women’s SET careers, the creation of new models for analysing gendered non-linear and frayed career narratives, and methods for supporting identity work by women in their transition back into work. The papers include recommendations for educators and trainers, employers as well as policy makers concerned with trying to tackle the under representation of women in SET.
Variational bounds on the energy dissipation rate in body-forced shear flow
Creators: name: Petrov, Nikola P.
name: Lu, Lu
name: Doering, Charles R.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: A new variational problem for upper bounds on the rate of energy dissipation in body-forced shear flows is formulated by including a balance parameter in the derivation from the Navier-Stokes equations. The resulting min-max problem is investigated computationally, producing new estimates that quantitatively improve previously obtained rigorous bounds. The results are compared with data from direct numerical simulations.
description: 15 pages, 7 figures
USO DE INSECTICIDAS Y CULTIVOS ACOMPANANTES PARA EL MANEJO DE Thrips tabaci L. y Liriomyza trifolii B. EN EL CULTIVO DE LA CEBOLLA EN PUERTO RICO
Creators: name: Cabrera, I.
name: Velez, A.
name: Cabrera, I.
name: Velez, A.
Publisher: name: Unknown
Year: 2000
Subjects: Agricultural and Food Policy

description: El cultivo de la cebolla en Puerto Rico requiere de un manejo intensivo y muy en particular el manejo de insectos. Estos ultimos afios hemos dedicado mucho tiempo en la identification de los insectos mas importantes en el cultivo y como manejar los mismos. Los insectos identificados como los mds dafiinos fueron Thrips tabaci y Liriomyza trifolii. Una vez identificados los insectos evaluamos diferentes insecticidas e incorporamos cultivos acompafiantes en la cebolla para determinar la efectividad de ambos manejos para controlar estos dos insectos. Se determino que los siguientes cultivos acompafiantes: Ocimum basilicum, Ocimum sanctum, Lippia micronera, Rosmarinus officinalis y Plactrantus amboinicus sembrados a ambos lados del cultivo de la cebolla. Y afiadiendo los insecticidas Cypermethrina y Avermectina a las dosis de 0.35 y 1.12 kg/ha, respectivamente. Aplicados al cultivo de la cebolla desde la septima hasta la decimocuarta semana en solo una aplicacion semanal, se logro observar que las poblaciones de T. tabaci y L. trifolii disminuyeron significativamente. Estos cultivos acompafiantes mas las aplicaciones de Cypermethrina y Avermectina ofrecen una alternativa de manejo que puede llegar a reducir las aplicaciones excesivas de insecticidas y el costo elevado del manejo de ambos insectos en el cultivo de la cebolla.
title: Computer mediated communication and disability support: addressing barriers to study for undergraduate distance learners with long-term health problems
Creators: name: Debenham, Margaret
Publisher: name: The Open University
Year: 2001

description: This work explores barriers to study encountered by undergraduate distance learners with long-term health problems. It considers ways in which problems identified in an Exploratory Study might be addressed. These include fatigue, difficulties with handwriting, academic and social isolation, together with a need for better interactive communication with support agencies. The student perspective is explored in depth. The essential finding is that the adoption of an Autonomy approach when using CMC for access to services on a 'Virtual Campus' can have beneficial effects and begin to break down the barriers to study that the Exploratory Study identified. Two intervention studies sought to address these problems using a computer conferencing system as the medium of contact with support staff and other students in a 'Virtual Campus' environment. A novel mode of access to educational counselling provision was designed, introducing a group dimension into the process. In addition to one-to-one email, participants could now consult the advisor in a counselling topic within a confidential peer group environment, DOORway. The findings suggest that informal contact with the counsellor in this conference had helped to build rapport and develop confidence for these students to approach her by e-mail when more private advice or help was needed. Given a choice of options, at the close of the studies more than three quarters of the sample said they would prefer access to a counsellor on-line rather than by traditional routes. The role of the peer group conference is considered to have been pivotal to the reported benefits in a number of ways. Firstly, it provided an empathic on-line community for mutual support. Secondly, it provided an environment in which sensitive questions could be raised with an educational counsellor. Thirdly, it provided a gentle introduction to participation in the wider world of open conferences on a 'Virtual Campus'. The findings suggest that it was the combination of this raft of measures, a holistic package readily available when using CMC in a 'Virtual Campus' environment, that was most effective in addressing the identified barriers to study for this group of students with long-term health problems.
Signals with six bottom quarks for charged and neutral Higgs bosons
Creators: name: Dermisek, Radovan
name: Lunghi, Enrico
name: McGinnis, Navin
name: Shin, Seodong
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: In extensions of two Higgs doublet models with vectorlike quarks, the decays of vectorlike quarks may easily be dominated by cascade decays through charged or neutral Higgs bosons leading to signatures with 6 top or bottom quarks. Since top quark decays also contain bottom quarks, a common signature for many possible decay chains is 6 bottom quarks in the final state. We present a search strategy focusing on this final state and find the mass ranges of vectorlike quarks and Higgs bosons that can be explored at the Large Hadron Collider. Among other results, the sensitivity to the charged and neutral Higgs bosons, extending to about 2 TeV, stands out when compared to models without vectorlike matter.
description: 21 pages, 12 figures, 4 tables. v2: Minor mistakes and typos corrected, main results unchanged, matches published version
Evidence for charge Kondo effect in superconducting Tl-doped PbTe
Creators: name: Matsushita, Y.
name: Bluhm, H.
name: Geballe, T. H.
name: Fisher, I. R.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report results of low-temperature thermodynamic and transport measurements of Pb_{1-x}Tl_{x}Te single crystals for Tl concentrations up to the solubility limit of approximately x = 1.5%. For all doped samples, we observe a low-temperature resistivity upturn that scales in magnitude with the Tl concentration. The temperature and field dependence of this upturn are consistent with a charge Kondo effect involving degenerate Tl valence states differing by two electrons, with a characteristic Kondo temperature T_K ~ 6 K. The observation of such an effect supports an electronic pairing mechanism for superconductivity in this material and may account for the anomalously high T_c values.
description: 3 figures, 4 pages
Physarum melleum Massee 1892
Creators: name: Kryvomaz, Tetiana
name: Michaud, Alain
name: Stephenson, Steven L.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Fungi
Mycetozoa
Myxomycetes
Physarales
Physaraceae
Physarum
Physarum melleum

description: Physarum melleum (Berk. & Broome) Massee (25 FC, 16 MC, 21 loc, 17 ps)
 Loc. 4 Mahé: inside of fallen palm leaf, AM3067, TK2827. Loc. 6 Mahé: On fallen leaves of Tabebuia pallida, AM 3087, TK2881. On wood of fallen large branch of Cinnamomum verum, AM 3079, TK2868. Loc. 7 Mahé: On wood of fallen little branch and fallen leaves of Tabebuia pallida, AM 3114, TK2934 (2FC). Loc. 8 Mahé: On dry grass Dianella ensifolia, SLS (MC pH 6). Loc. 10 Mahé: On fallen leaves of Cinnamomum verum, AM 3143, TK2999. On fallen leaves of Dillenia ferruginea, AM 3139, TK2995. Loc. 11 Praslin: On dry pods fixed to living tree Leucaena leucocephala, SLS (MC pH 5.8). On dead leaves and stem of palm Phoenicophorium borsigianum, SLS (MC pH 5.9). Loc. 19 Praslin: On dead spathe fixed to living palm Cocos nucifera, AM2756, TK2131 (2FC). Loc.27a La Digue: On fallen leaves of Calophyllum inophyllum, AM2892, TK2425 (3FC). Loc.29 La Digue: On dead spathe fixed to living palm Cocos nucifera, SLS (MC pH 6). Loc. 30 La Digue: On fallen leaves of Mangifera indica, AM2878, TK2406. Loc. 35 La Digue: On Xylaria sp. on wood of rotten log, AM2883, TK2412 (2FC). Loc. 36 La Digue: On fallen leaves of Terminalia catappa, AM 3223, TK2777. Loc. 37c La Digue: On dry leaves attachet to tree Cinnamomum verum, SLS 32353 (MC pH 6), SLS 32178 (MC pH 6.44). On root of living epiphytic Phymatodes scolopendria, SLS 32380 (MC pH 6.3). Loc. 37j La Digue: On dead bark of living epiphytic liana Syngonium podophyllum, SLS 32331 (MC pH 5.8). On fallen leaves of Calophyllum inophyllum, AM2862, TK2381 (3FC). On fallen leaves of Cinnamomum verum, AM2867, TK2391. Loc. 37k La Digue: On dry fern Dicranopteris linearis, AM 3184, TK2671. Loc. 37m La Digue: On fallen dead influence of Cheilocostus speciosus, AM2870, TK2395. Loc. 38b La Digue: On bark of living tree Artocarpus altilis, SLS 32211 (MC pH 5.7). On dead spathe fixed to living palm Cocos nucifera, AM2781, TK2295, SLS 32178 (MC pH 6.4), SLS (MC pH 6.3). On dry leaves attached to perennial herb Musa sp., SLS (MC pH 6.3), SLS 32187 (MC pH 7.4). On dry stems of living epiphytic liana Syngonium podophyllum, SLS (MC pH 6.3). Loc. 39b La Digue: On wood of fallen branch of Terminalia catappa, AM2982, TK2554. Loc. 40a La Digue: On wood and bark of rotten branch of Terminalia catappa, AM2913, TK2451. Loc. 47a Curieuse: On dead inflorescence attached to living palm Phoenicophorium borsigianum, SLS 32196 (MC pH 5.9), SLS (MC pH 6).
description: Published as part of Kryvomaz, Tetiana, Michaud, Alain & Stephenson, Steven L., 2020, Myxomycete biodiversity on five islands of the Seychelles, pp. 201-244 in Zootaxa 4851 (2) on page 238, DOI: 10.11646/zootaxa.4851.2.1, http://zenodo.org/record/4407410
An energy stable one-field monolithic arbitrary Lagrangian-Eulerian formulation for fluid-structure interaction
Creators: name: Wang, Yongxing
name: Jimack, Peter K.
name: Walkley, Mark A.
name: Pironneau, Olivier
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Analysis of PDEs (math.AP)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: In this article we present a one-field monolithic finite element method in the Arbitrary Lagrangian-Eulerian (ALE) formulation for Fluid-Structure Interaction (FSI) problems. The method only solves for one velocity field in the whole FSI domain, and it solves in a monolithic manner so that the fluid solid interface conditions are satisfied automatically. We prove that the proposed scheme is unconditionally stable, through energy analysis, by utilising a conservative formulation and an exact quadrature rule. We implement the algorithm using both ${\bf F}$-scheme and ${\bf d}$-scheme, and demonstrate that the former has the same formulation in two and three dimensions. Finally several numerical examples are presented to validate this methodology, including combination with remesh techniques to handle the case of very large solid displacement.
title: Community and Thread Methods for Identifying Best Answers in Online Question Answering Communities
Creators: name: Burel, Grégoire
Publisher: name: The Open University
Year: 2016

description: Much research has recently investigated the measurement of quality answers in Question Answering (Q&A) communities in the form of automatic best answer identification. Previous approaches have focused on manual user annotations and diverse features based on intuition for identifying best answers and proved relatively successful despite considering best answer identification as a general classification problem. Best answer modelling is generally distanced from community studies about what users regard as important for identifying quality content. In particular, previous research tends to only focus on the automatic aspects of best answers identification model by applying generic learning algorithms. This thesis introduces the concepts of qualitative and structural design in order to investigate if features derived from community questionnaires can enrich the understanding of best answer identification in Q&A communities and if the thread-like structure of Q&A communities can be exploited for better results. Two different approaches for exploiting the thread structure of Q&A communities are proposed and two new, previously unstudied, features are introduced. First, a measure of question complexity is introduced as a proxy measure of answerer knowledge. Second, different models of contribution effort are proposed for representing the answering reactivity of contributors. The experiments are systematically conducted on datasets issued from three different communities that vary in size, content and structure. The results show that the newly proposed features allow for better understanding of what constitute best answers. The findings also reveal that the thread-wise algorithms and optimisation techniques created from the structural design methodology correlate with best answers. In general both structural and qualitative design appear to improve best answer identification meaning that structural and qualitative methods may improve unrelated classification tasks.
CHARACTERIZATION OF MACROPHOMINA PHAS INA ISOLATES COLLECTED FROM THE DOMINICAN REPUBLIC AND PUERTO RICO
Creators: name: Echavez-Badel, Rodrigo
name: Campo-Arana, Rodrigo
name: Betancourt, Carlos
name: Echavez-Badel, Rodrigo
name: Campo-Arana, Rodrigo
name: Betancourt, Carlos
Publisher: name: Unknown
Year: 2000
Subjects: Crop Production/Industries
Food Security and Poverty

description: Charcoal rotor ashy stem blight caused by the soil-borne fungus Macrophominaphaseolina (Mp) is recognized as an important disease of bean (Phaseolus vulgaris) in Puerto Rico (PR) and the Dominican Republic (DR). Severe symptoms occur especially when bean seedlings or adult plants are stressed from moisture deficits. Differences in virulence and morphological, physiological, and biochemical characteristics were obtained among PR and DR isolates of Mp in this study. PRMp2 was more virulent than PRMpl. However, DRMp2 was more virulent than either PRMp2 or DRMpl. Mycelia morphological characteristics and sclerotia size were similar in the DR isolates but different from those of the PR isolate. There were not significant differences in sclerotia size and mycelia radial growth of each isolate under light or dark conditions. Analysis of protein patterns of the PR and DR isolates was performed by polyacrylamide gel electrophoresis (PAGE). Protein profiles of DR isolates were similar but different from that of PR isolate (PRMp2).
Luminescence quenching via deep defect states: A recombination pathway via oxygen vacancies in Ce-doped YAG
Creators: name: Linderälv, Christopher
name: Åberg, Daniel
name: Erhart, Paul
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Luminescence quenching via non-radiative recombination channels limits the efficiency of optical materials such as phosphors and scintillators and therefore has implications for conversion efficiency and device lifetimes. In materials such as Ce-doped yttrium aluminum garnet (YAG:Ce), quenching shows a strong dependence on both temperature and activator concentration, limiting the ability to fabricate high-intensity white-light emitting diodes with high operating temperatures. Here, we reveal by means of first-principles calculations an efficient recombination mechanism in YAG:Ce that involves oxygen vacancies and gives rise to thermally activated concentration quenching. We demonstrate that the key requirements for this mechanism to be active are localized states with strong electron-phonon coupling. These conditions are commonly found for intrinsic defects such as anion vacancies in wide band-gap materials. The present findings are therefore relevant to a broad class of optical materials and shine light on thermal quenching mechanisms in general.
description: 8 pages, 6 figures
Jointly optimal denoising, dereverberation, and source separation
Creators: name: Nakatani, Tomohiro
name: Boeddeker, Christoph
name: Kinoshita, Keisuke
name: Ikeshita, Rintaro
name: Delcroix, Marc
name: Haeb-Umbach, Reinhold
Publisher: name: arXiv
Year: 2020
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Sound (cs.SD)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: This paper proposes methods that can optimize a Convolutional BeamFormer (CBF) for jointly performing denoising, dereverberation, and source separation (DN+DR+SS) in a computationally efficient way. Conventionally, cascade configuration composed of a Weighted Prediction Error minimization (WPE) dereverberation filter followed by a Minimum Variance Distortionless Response beamformer has been usedas the state-of-the-art frontend of far-field speech recognition, however, overall optimality of this approach is not guaranteed. In the blind signal processing area, an approach for jointly optimizing dereverberation and source separation (DR+SS) has been proposed, however, this approach requires huge computing cost, and has not been extended for application to DN+DR+SS. To overcome the above limitations, this paper develops new approaches for jointly optimizing DN+DR+SS in a computationally much more efficient way. To this end, we first present an objective function to optimize a CBF for performing DN+DR+SS based on the maximum likelihood estimation, on an assumption that the steering vectors of the target signals are given or can be estimated, e.g., using a neural network. This paper refers to a CBF optimized by this objective function as a weighted Minimum-Power Distortionless Response (wMPDR) CBF. Then, we derive two algorithms for optimizing a wMPDR CBF based on two different ways of factorizing a CBF into WPE filters and beamformers. Experiments using noisy reverberant sound mixtures show that the proposed optimization approaches greatly improve the performance of the speech enhancement in comparison with the conventional cascade configuration in terms of the signal distortion measures and ASR performance. It is also shown that the proposed approaches can greatly reduce the computing cost with improved estimation accuracy in comparison with the conventional joint optimization approach.
description: Submitted to IEEE/ACM Trans. Audio, Speech, and Language Processing on 12 Feb 2020, Accepted to IEEE/ACM Trans. Audio, Speech, and Language Processing on 14 July 2020
Physarum mutabile G. Lister 1911
Creators: name: Kryvomaz, Tetiana
name: Michaud, Alain
name: Stephenson, Steven L.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Fungi
Mycetozoa
Myxomycetes
Physarales
Physaraceae
Physarum
Physarum mutabile

description: Physarum mutabile (Rostaf.) G. Lister (2 FC, 1 loc, 1 ps)
 Loc. 6 Mahé: On fallen leaves of Tabebuia pallida, AM 3089, TK2884 (2FC).
description: Published as part of Kryvomaz, Tetiana, Michaud, Alain & Stephenson, Steven L., 2020, Myxomycete biodiversity on five islands of the Seychelles, pp. 201-244 in Zootaxa 4851 (2) on page 238, DOI: 10.11646/zootaxa.4851.2.1, http://zenodo.org/record/4407410
The Hot Pepper Development Programme in Grenda
Creators: name: Joseph, C.
name: St. Clair, R.
name: Joseph, C.
name: St. Clair, R.
Publisher: name: Unknown
Year: 1999
Subjects: Agribusiness
Agricultural and Food Policy
Crop Production/Industries

description: Hot pepper (Capsicum frutescens L.) is an important crop in Grenada's agricultural diversification programme. In 1997, an inter-institutional 'Task Force" was formed to coordinate the hot pepper development programme. Most activities are undertaken under the 'Integrated Project in Support of Agricultural Diversification in the Eastern Caribbean States" being implemented by DCA in collaboration with the Ministry of Agriculture (MoA), the Grenada Marketing and National Importing Board (GMNIB) and CARDI. Selected hot pepper producers are given "supply contracts", training, technical information and advice, and access to certified hot pepper seeds and limited input supply credit. To date, the effort has resulted in increased hot pepper acreage and yields, reduced production costs, improved produce quality and increased hot pepper exports. The present emphasis is on achieving more effective hot pepper technology development and transfer, and integrating the production, processing and marketing aspects. Ultimately, a tested hot pepper production model will be established to ensure consistently high marketable yields (25 to 30 tonnes per hectare) and adequate production at minimum cost to satisfy the requirements of the local fresh produce exporters and agroprocessors.
EFFECT OF CONTROLLED WATER REGIMES ON PUMPKIN GROWTH
Creators: name: Rossy, Julio
name: Roman-Paoli, Elvin
name: Martinez-Garrastazu, Sonia
name: Rivera, Luis Ernesto
name: Rossy, Julio
name: Roman-Paoli, Elvin
name: Martinez-Garrastazu, Sonia
name: Rivera, Luis Ernesto
Publisher: name: Unknown
Year: 2000
Subjects: Crop Production/Industries
Productivity Analysis

description: Pumpkin, Cucurbita moschata (Duchesne) Poir, is one of the most important vegetables crops in the Caribbean Basin. Vegetables production in Puerto Rico tropical areas depends on drip irrigation for most of its irrigation requirements. However, information on basic drip irrigation management practices is still inadequate. Therefore, a research was conduced using Pan A evaporation readings, to establish drip irrigation management practices and quantify resulting crop response. The objectives of the study were: 1. To evaluate the effect of evapotranspiration replenishment on growth of pumpkins under tropical conditions, and 2. To determine water requirements for pumpkins under tropical conditions. Pumpkin plants (Soler and Isolate Summer selections) were submitted to four evapotranspiration replenishment treatments (ERT): 25, 50. 75, and 100% of Pan evaporation readings at two locations, Lajas and Juana Diaz. ERT did not affect leaf area at any of both locations. However, the dry matter accumulation was affected significantly by ERT, pumpkin selection and interaction of both main effect at Juana Diaz. The estimated evapotranspiration (100% ERT) at Juana Diaz (5.1 mm day1) was twice as great as that of Lajas (2.4 mm day-1).
A Critique of Scott's Theory of the Relationship Between Ackee Seasonality and Ackee Poisoning
Creators: name: Rashford, John
name: Rashford, John
Publisher: name: Unknown
Year: 1999
Subjects: Agribusiness
Agricultural and Food Policy
Crop Production/Industries

description: The ackee (Blighia sapida) is a beautiful evergreen tree of tropical West Africa that has become Jamaica's most celebrated food plant even though its fruit is more widely known in the scientific literature for its association with poisoning than for its desirability as an edible fruit. The fruit is considered poisonous throughout much of the Caribbean, and its commercial importation into the United States is banned. This is a great loss to Jamaican fanners. Historically, the individual who is most responsible for formulating the idea that ackee poisoning was the cause of an illness called vomiting sickness was Harold Scott, and his work is still being cited in contemporary studies and newspaper articles. The purpose of this paper is to show that Scotts account is inconsistent, especially with regard to his understanding of the relationship between the seasonal availability of ackee and ackee poisoning.
Classical spectral sum rules and "half-naked" electron effects in radiation from relativistic electrons in external field
Creators: name: Artru, Xavier
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Two properties of the radiation emitted by a relativistic electron in an external field, in the classical approximation, are presented in details: 1) spectral sum rules and their relationship with the sum rules for oscillator strength in atomic physics. Filtered sum rules can be used to remove infrared or ultraviolet divergences. 2) "half-naked electron" effects like the Landau- Pomeranchuk-Migdal and Ternovskij-Shul'ga-Fomin effects. These properties are best understood when introducing the apparent transverse velocity.
description: 9 pages, 2 figures. Presented at "RREPS-19",Sept. 2019, Belgorod, Russia. This is the Accepted Manuscript version of an article accepted for publication in Journal of Instrumentation. Neither SISSA Medialab Srl nor IOP Publishing Ltd is responsible for any errors or omissions in this version of the manuscript or any version derived from it
Physarum notabile T. Macbr.
Creators: name: Kryvomaz, Tetiana
name: Michaud, Alain
name: Stephenson, Steven L.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Fungi
Mycetozoa
Myxomycetes
Physarales
Physaraceae
Physarum
Physarum notabile

description: * Physarum notabile T. Macbr. (1 FC, 1 loc, 1 ps)
 Loc. 6 Mahé: On dry stems of living climber liana Epipremnum pinnatum, AM 3080, TK2869.
description: Published as part of Kryvomaz, Tetiana, Michaud, Alain & Stephenson, Steven L., 2020, Myxomycete biodiversity on five islands of the Seychelles, pp. 201-244 in Zootaxa 4851 (2) on page 238, DOI: 10.11646/zootaxa.4851.2.1, http://zenodo.org/record/4407410
The moral consequence of religions
Creators: name: Shariff, Azim F.
Publisher: name: University of British Columbia
Year: 2010

description: Debates about the causal relationship between religion and morality continue to be inconclusive, despite the willingness of pundits on both sides to speculate freely. We present three studies aimed at resolving whether religion has a causal effect on prosocial behaviour, and what mechanisms may be involved. Our results indicate that the implicit priming of religion does, indeed, increase prosocial behaviour towards anonymous strangers. The effect holds both for theists and atheists. Meanwhile, self-reported religiosity as a trait measure does not seem to be associated with prosocial behaviour. We also find that religion primes, but not control primes or ones associated secular institutions of morality increase feelings of guilt and nervousness. We discuss the mechanisms that may underlie such effects. In addition, we examine the implications that such a finding has for theories positing religion as a necessary, culturally evolved, facilitator in the emergence of large scale societies at the beginning of the Neolithic period.
Thermodynamics of dilute Bose gases: Beyond mean-field theory for binary mixtures of Bose-Einstein condensate
Creators: name: Ota, Miki
name: Giorgini, Stefano
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study the thermodynamic properties of binary Bose mixtures, by developing a beyond mean-field Popov theory which properly includes the effects of quantum and thermal fluctuations in both the density and spin channels. Results for key thermodynamic quantities, such as the isothermal compressibility and the magnetic susceptibility, are derived from a perturbative calculation of the grand-canonical potential. We find that thermal fluctuations can play a crucial role on the miscibility condition of a binary mixture, favoring phase separation at finite temperature even if the mixture is soluble at zero temperature, as already anticipated in a previous work [Ota et al., Phys. Rev. Lett. 123, 075301 (2019)]. We further investigate the miscibility condition for binary mixtures in the presence of asymmetry in the intra-species interactions, as well as in the masses of the two components. Furthermore, we discuss the superfluid behavior of the mixture and the temperature dependence of the Andreev-Bashkin effect.
description: 18 pages, 10 figures. Minor changes and corrections
Questions, relevance and relative entropy
Creators: name: Caticha, Ariel
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: What is a question? According to Cox a question can be identified with the set of assertions that constitute possible answers. In this paper we propose a different approach that combines the notion that questions are requests for information with the notion that probability distributions represent uncertainties resulting from lack of information. This suggests that to each probability distribution one can naturally associate that particular question which requests the information that is missing and vice-versa. We propose to represent questions q by probability distributions Next we consider how questions relate to each other: to what extent is finding the answer to one question relevant to answering another? A natural measure of relevance is derived by requiring that it satisfy three desirable features (three axioms). We find that the relevance of a question q to another question Q turns out to be the relative entropy S[q,Q] of the corresponding distributions. An application to statistical physics is briefly considered.
description: Presented at MaxEnt 2004, the 24th International Workshop on Bayesian Inference and Maximum Entropy Methods (July 25-30, 2004, Garching bei Munchen, Germany)
Ocena zadłużenia przedsiębiorstw w Polsce – analiza sektorowa ze szczególnym uwzględnieniem przedsiębiorstw rolniczych
ASSESSMENT OF CORPORATE DEBT OF POLISH COMPANIES – THE SECTORAL ANALYSIS WITH EMPHASIS ON AGRICULTURAL ENTERPRISES
Creators: name: Zawadzka, Danuta
name: Szafraniec-Siluta, Ewa
name: Zawadzka, Danuta
name: Szafraniec-Siluta, Ewa
Publisher: name: Unknown
Year: 2017
Subjects: subject: Agricultural Finance
subject: Financial Economics
subject: przedsiębiorstwa rolnicze
subject: zadłużenie przedsiębiorstw
subject: analiza porównawcza

description: The aim of the paper was to identify the debt level of companies in Poland in the years 2006-2014 and an assessment of the impact of operating activity on the use of debt in the structure of financing, using comparative analysis of corporate debt by sector, with particular emphasis on agricultural enterprises. The study was based on data collected by the Central Statistical Office (Financial results of economic entities - balance sheets). At the core of the research was a thesis that the agricultural enterprises, compared to trading enterprises and industry entities, are characterized by the lowest level of debt, which means that they are not at risk of losing the ability to repay the borrowed capital. Due to the nature of operating activity which influence on the assets structure, they are characterized by a relatively high level of assets’ debt. The thesis has been proven in the course of the study.
Record dynamics of evolving metastable systems: theory and applications
Creators: name: Sibani, Paolo
name: Boettcher, Stefan
name: Jensen, Henrik Jeldtoft
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Record Dynamics (RD) deals with complex systems evolving through a sequence of metastable stages. These are macroscopically distinguishable and appear stationary, except for the sudden and rapid changes, called quakes, which induce the transitions from one stage to the next. This phenomenology is well known in physics as "physical aging", but from the vantage point of RD the evolution of a class of systems of physical, biological and cultural origin is rooted in a hierarchically structured configuration space and can therefore be analyzed by similar statistical tools. This colloquium paper strives to present in a coherent fashion methods and ideas that have gradually evolved over time. To this end, it first describes the differences and similarities between RD and two widespread paradigms of complex dynamics, Self Organized Criticality and Continuous Time Random Walks. It then outlines the Poissonian nature of records events in white noise time series, and connects it to the statistics of quakes in metastable hierarchical systems, arguing that the relaxation effects of quakes can generally be described by power laws unrelated to criticality. Several different applications of RD have been developed over the years. Some of these are described, showinghe basic RD hypothesis, the log time homogeneity of quake dynamics, can be empirically verified in a given context. The discussion summarizes the paper and briefly mentions applications not discussed in detail. Finally, the outlook points to possible improvements and to new areas of research where RG could be of use.
title: Developing Learning Analytics for Epistemic Commitments in a Collaborative Information Seeking Environment
Creators: name: Knight, Simon James Goodwin
Publisher: name: The Open University
Year: 2016

description: Learning analytics sits at the confluence of learning, information, and computer sciences. Using a distinctive account of learning analytics as a form of assessment, I first argue for its potential in pedagogically motivated learning design, suggesting a particular construct – epistemic cognition in literacy contexts – to probe using learning analytics. I argue for a recasting of epistemic cognition as ‘epistemic commitments’ in collaborative information tasks drawing a novel alignment between information seeking and multiple document processing (MDP) models, with empirical and theoretical grounding given for a focus on collaboration and dialogue in such activities. Thus, epistemic commitments are seen in the ways students seek, select, and integrate claims from multiple sources, and the ways in which their collaborative dialogue is brought to bear in this activity. Accordingly, the empirical element of the thesis develops two pedagogically grounded literacy based tasks: a MDP task, in which pre-selected documents were provided to students; and a collaborative information seeking task (CIS), in which students could search the web. These tasks were deployed at scale (n > 500) and involved writing an evaluative review, followed by a pedagogically supported peer assessment task. Assessment outcomes were analysed in the context of a new epistemic commitments-oriented set of trace data, and psychometric data regarding the participants’ epistemic cognition. Demonstrating the value of the methodological and conceptual approach taken, qualitative analyses indicate clear epistemic activity, and stark differences in behaviour between groups, the complexity of which is challenging to model computationally. Despite this complexity, quantitative analyses indicate that up to 30% of variance in output scores can be modelled using behavioural indicators. The explanatory potential of behaviourally-oriented models of epistemic commitments grounded in tool-interaction and collaborative dialogue is demonstrated. The thesis provides an exemplification of theoretically positioned analytic development, drawing on interdisciplinary literatures in addressing complex learning contexts.
An asymptotic analysis of the Fourier-Laplace transforms of certain oscillatory functions
Creators: name: Broucke, Frederik
name: Debruyne, Gregory
name: Vindas, Jasson
Publisher: name: arXiv
Year: 2020
Subjects: subject: Complex Variables (math.CV)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: Primary 41A60, Secondary 30E15, 40E05, 42A38, 44A10, 46F12

description: We study the family of Fourier-Laplace transforms $$ F_{α,β}(z)= \operatorname*{F.p.} \int_{0}^{\infty} t^β\exp(\mathrm{i} t^α-\mathrm{i} z t)\:\mathrm{d} t, \quad \operatorname*{Im} z<0, $$ for $α>1$ and $β\in\mathbb{C}$, where Hadamard finite part is used to regularize the integral when $\operatorname*{Re} β\leq -1$. We prove that each $F_{α,β}$ has analytic continuation to the whole complex plane and determine its asymptotics along any line through the origin. We also apply our ideas to show that some of these functions provide concrete extremal examples for the Wiener-Ikehara theorem and a quantified version of the Ingham-Karamata theorem, supplying new simple and constructive proofs of optimality results for these complex Tauberian theorems.
description: 15 pages
Analysis of kinematic behavior of pedestrians/cyclists in vehicle collisions using impulse
Creators: name: Murano, Shinya
name: Chunyu Kong
name: Mizuno, Koji
name: Ito, Daisuke
name: Nakane, Daisuke
name: Asei Wakabayashi
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Objective: In order to further reduce the injury risks to pedestrians/cyclists in vehicle collisions, it is necessary to control pedestrian/cyclist kinematics. To investigate pedestrian/cyclist kinematic behavior from initial contact with the vehicle to the ground contact, it is necessary to evaluate the force interactions between the pedestrian/cyclist body region and the car body during the crash event. Method: Finite element analysis was conducted for models of pedestrians and cyclists being struck by a car around the center, left, and right sides of the front of the vehicle at 40 km/h. The impulse that was applied to each body region of the pedestrian/cyclist by the vehicle body during the impact was employed to analyze the kinematic behavior of the pedestrian/cyclist. Results: An impulse–time history can be separated into three stages. In the first stage, the pedestrian/cyclist was accelerated by the vehicle’s forward impulse imparted to the subject due to the lower extremities contacting the bumper and hood leading edge. In the second stage, the pedestrian/cyclist rotates around the hood leading edge. In the third stage, the pedestrian/cyclist was accelerated in the vehicle forward and upward directions by the impulse resulting from the contact of the head and upper extremities with the cowl and the windshield. As the impulse to the lower extremity increased, the wraparound distance (WAD) decreased; however, the pelvis velocity in the forward direction increased. Conclusion: This research employed a new approach using the impulse transmitted to each body region due to contact with the vehicle body and showed that impulse is a useful parameter to understand the process of pedestrian/cyclist kinematics. The impulse relates to the linear and angular velocities of the pedestrian/cyclist at the time of separation from the car, thereby providing useful information to control pedestrian/cyclist falling kinematics prior to the ground impact.
SI_IEAM_BN_metapop.pdf
Creators: name: Mitchell, Chelsea
name: Chu, Valerie
name: Harris, Meagan
name: Landis, Wayne
name: Stackelberg, Katherine Von
name: Stark, John D.
Publisher: name: figshare
Year: 2020
Subjects: subject: Environmental Science
subject: 50205 Environmental Management
subject: FOS: Earth and related environmental sciences

description: This is a supplemental data file for the manuscript:
Integrating metapopulation dynamics into a Bayesian Network Relative Risk Model: Assessing the risk of pesticides to Chinook salmon (Oncorhynchus tshawytscha) in an ecological context
This file includes documentation of population model construction and Bayesian network node derivation.
Two-dimensional Dirac Semimetals without Inversion Symmetry
Creators: name: Jin, Y. J.
name: Zheng, B. B.
name: Xiao, X. L.
name: Chen, Z. J.
name: Xu, Y.
name: Xu, H.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Realizing stable two-dimensional (2D) Dirac points against spin-orbit coupling (SOC) has attracted much attention because it provides a platform to study the unique transport properties. In previous work, Young and Kane [Phys. Rev. Lett. \textbf{115}, 126803 (2015)] proposed stable 2D Dirac points with SOC, in which the Berry curvature and edge states vanish due to the coexistence of inversion and time-reversal symmetries. Herein, using the tight-binding model and k$\cdot$p effective Hamiltonian, we present that 2D Dirac points can survive in the presence of SOC without inversion symmetry. Such 2D Dirac semimetals possess nonzero Berry curvature near the crossing nodes, and two edge states are terminated at one pair of Dirac points. In addition, according to symmetry arguments and high-throughput first-principles calculations, we identify a family of ideal 2D Dirac semimetals, which has nonzero Berry curvature in the vicinity of Dirac points and visible edge states, thus facilitating the experimental observations. Our work shows that 2D Dirac points can emerge without inversion symmetry, which not only enriches the classification of 2D topological semimetals but also provides a promising avenue to observe exotic transport phenomena beyond graphene, e.g., nonlinear Hall effect.
description: 5 pages, 4 figures
Bi-relative algebraic K-theory and topological cyclic homology
Creators: name: Geisser, Thomas
name: Hesselholt, Lars
Publisher: name: arXiv
Year: 2004
Subjects: subject: Number Theory (math.NT)
subject: K-Theory and Homology (math.KT)
subject: FOS: Mathematics

description: It is well-known that algebraic K-theory preserves products of rings. However, in general, algebraic K-theory does not preserve fiber-products of rings, and bi-relative algebraic K-theory measures the deviation. It was proved by Cortinas that,rationally, bi-relative algebraic K-theory and bi-relative cyclic homology agree. In this paper, we show that, with finite coefficients, bi-relative algebraic K-theory and bi-relative topological cyclic homology agree. As an application, we show that for a, possibly singular, curve over a perfect field of positive characteristic p, the cyclotomic trace map induces an isomorphism of the p-adic algebraic K-groups and the p-adic topological cyclic homology groups in non-negative degrees. As a further application, we show that the difference between the p-adic K-groups of the integral group ring of a finite group and the p-adic K-groups of a maximal Z-order in the rational group algebra can be expressed entirely in terms of topological cyclic homology.
Discrete Approximations of Joint Probability Distributions
Creators: name: DeVuyst, Eric
name: Preckel, Paul V.
name: DeVuyst, Eric
name: Preckel, Paul V.
Publisher: name: Unknown
Year: 1991
Subjects: subject: Productivity Analysis
subject: Decision Analysis
subject: Approximate Probability Distributions
subject: Approximate Joint Probability Distributions

description: Practical computational limits for stochastic decision analysis models often require that probability distributions have a modest number of points with positive mass. This paper develops an approach to constructing such discrete joint probability distributions which introduces less bias than more commonly used methods. The method, based on solving systems of nonlinear equations, is demonstrated for both continuous and discrete distributions.
Physarum nucleatum Rex 1891
Creators: name: Kryvomaz, Tetiana
name: Michaud, Alain
name: Stephenson, Steven L.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Fungi
Mycetozoa
Myxomycetes
Physarales
Physaraceae
Physarum
Physarum nucleatum

description: * Physarum nucleatum Rex (3 FC, 2 loc, 2 ps)
 Loc. 15 Praslin: On stem of dead palm, AM2741, TK2076; Loc. 36 La Digue: On wood and bark of fallen branch of Terminalia catappa, AM 3219, TK2778 (2FC).
description: Published as part of Kryvomaz, Tetiana, Michaud, Alain & Stephenson, Steven L., 2020, Myxomycete biodiversity on five islands of the Seychelles, pp. 201-244 in Zootaxa 4851 (2) on page 238, DOI: 10.11646/zootaxa.4851.2.1, http://zenodo.org/record/4407410