cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Electronic structure of an electron on the gyroid surface, a helical labyrinth
Creators: name: Koshino, M.
name: Aoki, H.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Previously reported formulation for electrons on curved periodic surfaces is used to analyze the band structure of an electron bound on the gyroid surface (the only triply-periodic minimal surface that has screw axes). We find that an effect of the helical structure appears as the bands multiply sticking together on the Brillouin zone boundaries. We elaborate how the band sticking is lifted when the helical and inversion symmetries of the structure are degraded. We find from this that the symmetries give rise to prominent peaks in the density of states.
description: RevTeX, 4 pages, 6 figures
Interpretation and Transformation of Scale for the Pratt-Arrow Absolute Risk Aversion Coefficient: Implications for Stochastic Dominance
Interpretation and Transformation of Scale for the Pratt-Arrow Absolute Risk Aversion Coefficient: Implications for Stochastic Dominance
Creators: name: Raskin, Rob
name: Cochran, Mark J.
name: Raskin, Rob
name: Cochran, Mark J.
Publisher: name: Unknown
Year: 1985
Subjects: Research Methods/ Statistical Methods

description: The Pratt-Arrow measure of absolute risk aversion, as defined by r(x} = u"{x}/u' (x}, is well known to be "invariant to linear transformations." However, this invariance property applies with respect to transformations of u and not with respect to arbitrary rescalings of x. The effects of this misunderstanding has led to ambiguity as to what actually constitutes behavior tnat is "slightly risk averse," "very risk averse," etc. The use of the coefficient in "per acre" analyses is particularly addressed.
title: Sociodramatic Play and Child Development
Creators: name: Meakin, Peter Timothy
Publisher: name: The Open University
Year: 2004

description: Arising out of a concern for the perceived devaluing of social pretend play in both formal early-years educational environments in particular and in wider western society as a whole, this research seeks to identify and categorise some of the potential developmental benefits of this kind of play activity. It locates and describes five areas of development in particular within which sociodramatic play is seen as having an especially positive effect; these are – cognition, linguistic development, social understanding, identity construction/emotional and moral development, and humour/pleasure. Some of the interconnections and overlaps between these various areas of development are also explored. The research adopts an essentially “naturalistic” approach – collecting, collating and analysing fundamentally qualitative data. It seeks to describe the sociodramatic play of four and five year olds within formal educational settings using both video and audio recordings, as well as semi-structured interviews with some of the relevant personnel. The report also endeavours to theorise about certain elements of social pretend play utilising the five areas of development noted above to help structure and inform its analysis. This work seeks to contribute to an “agenda of concern” about the downgrading of social pretend play, concluding that this kind of activity does assist development in the cognitive, linguistic, emotional, moral and social domains.
The Relevancy of Non-Normal Risk
Creators: name: Wilson, Paul N.
name: Wilson, Paul N.
Publisher: name: Unknown
Year: 1983
Subjects: subject: Risk and Uncertainty
subject: Risk
subject: Stochastic Dominance
subject: Beta Distribution
subject: Simulation

description: 'Ihe argument that a normal distribution of a performance indicator may be an inadequate approximation of the true distribution is examined in this paper. Simulated normal and beta distributions of net return for 1,181 swine operations are compared using a Kolmogorov-Simirnov test and stochastic dominance techniques. Results show that for this data set the differences between the simulations are not statistically significant nor does stochastic dominance switching take place. Although the normal distribution represents an acceptable approximation, the added flexibil­ity of the beta distribution may prove more useful in future research.
Physarum oblatum 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 oblatum

description: Physarum oblatum T. Macbr. (6 MC, 4 loc, 4 ps)
 Loc. 5 Mahé: On bark of living tree Tabebuia pallida, SLS 32367 (MC pH 6.4). Loc. 22c Praslin: On dry stems of living climber liana Epipremnum pinnatum, SLS 32147 (MC pH 7.4), SLS (MC pH 7.5). Loc. 47a Curieuse: On dry leaves attachet to palm Phoenicophorium borsigianum, SLS 32165 (MC pH 4.9). Loc. 48 Curieuse: On bark of living tree Thespesia populnea, SLS (MC pH 6.1), SLS 32425 (MC pH 7.4).
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
title: A Study of Cross-Cultural Decision-Making Styles: Is Cognitive Mapping an Effective Methodology for Data Analysis?
Creators: name: Yang, Guangyu
Publisher: name: The Open University
Year: 2016

description: In an increasingly globalised business environment, the behaviour and performance of managers from one country and culture working in another has never been more relevant. Of particular interest is the behaviour of expatriate managers from the west, working in Asian-owned or joint-venture companies situated in East Asia, and making decisions individually and as a group. The current study differs from many that are based around questionnaires and a quantitative methodology. It is a qualitative investigation into expatriate French managers based in China, and working in Chinese and French-Chinese companies. The choice of French managers situated in China is based on the distinct differences in culture, and the author’s own background as a Chinese manager working with French colleagues. The familiarity of the author with both the Chinese and French business cultures is important for useful interpretation of the data. The understanding of both cultures used in creating the methodology, interviewing, analysing and interpreting the data is an important and distinctive aspect of the research. The research looks at the manager's choice of individual or group decision-making styles, and the factors that influence the manager's choices in different cultural contexts. It uses cognitive mapping techniques to analyse 20 interview transcripts. The study concluded that cognitive mapping is a viable methodology to gain insights into the manager's individual and group decision-making styles. This methodology provided an opportunity to follow the manager's thinking around the choices they made, and to identify the factors that influence the manager's decision-making styles and process.
Agricultura familiar Algunas reflexiones para un debate necesario
Creators: name: Moyano EStrada, Eduardo
name: Moyano EStrada, Eduardo
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: Explotaciones familiares agrarias
subject: Política agraria
subject: Sociedad rural

description: Mientras que en los países desarrollados la agricultura familiar es vista como algo anacrónico, en los países en vía de desarrollo continúa siendo percibida como un modelo agrícola atractivo y funcional para promover el desarrollo rural y el bienestar de la población local, así como una vía para la seguridad alimentaria. En todo caso, la agricultura familiar es difícil de aprehender sea cual fuere el área geográfica de estudio, al ser un fenómeno complejo y multidimensional. En muchas áreas rurales, las explotaciones familiares mantienen formas específicas de interacción con el territorio, los mercados y como consecuencia de ello muestran una gran variabilidad en sus modelos de organización interna y de gestión social y económica. En este artículo, su autor revisa en primer lugar el concepto tradicional de agricultura familiar con objeto de comprobar cuáles de sus elementos son aún vigentes y cuáles están ya obsoletos. En segundo lugar, propone algunas ideas para estimular el debate y construir un nuevo concepto más actualizado y más ajustado a la realidad empírica de este tipo de explotaciones agrarias cuya lógica es distinta de la de las explotaciones de base empresarial.
The Coming Decade of $h \to τμ$ and $τ\to μγ$ Interplay in $τ$ Flavor Violation Search
Creators: name: Hou, Wei-Shu
name: Kumar, Girish
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We explore the interplay between $h(125) \to τμ$ search at the LHC and $τ\to μγ$ at the up and coming Belle~II experiment, in context of the general two Higgs doublet model with extra Yukawa couplings such as $ρ_{τμ}$. The search for $h \to τμ$ constrains $ρ_{τμ} \cosγ$, where $\cosγ$ is the $h$--$H$ mixing angle of $h$ with the exotic $CP$-even scalar $H$. For $τ\to μγ$, we define the "BSM-benchmark" by setting the extra top Yukawa coupling $ρ_{tt} = 1\ (\cong λ_t)$ in two-loop diagrams, and $\cosγ= 0$ to decouple $h$. We show that this leading effect due to $H$ and $CP$-odd scalar $A$ can be readily probed by Belle~II, even for the conservative value of $ρ_{τμ} = 0.7λ_τ$. We define the subleading "$h$-benchmark" by setting $ρ_{tt} = 0$ in two-loop diagrams, and take the conservative maximal value of $\cosγ= 0.2$. We show that it falls beyond Belle~II reach, but can interfere with the BSM-benchmark effect, which in principle probes the phase of $ρ_{tt}$. We further show that the one-loop $H$, $A$ effect, proportional to $ρ_{τμ}ρ_{ττ}$ in amplitude, is beyond the sensitivity of Belle~II to probe, even for $ρ_{ττ}$ as large as $3λ_τ$. With the working assumption that $ρ_{32}^f, ρ_{33}^f = {\cal O}(λ_3^f)$ for all charged fermions $f$, we find good discovery potential for both $τ$ lepton flavor violation searches in the coming decade.
description: 7 pages, 3 figures
Matching Questions and Answers in Dialogues from Online Forums
Creators: name: Jia, Qi
name: Zhang, Mengxue
name: Zhang, Shengyao
name: Zhu, Kenny Q.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Matching question-answer relations between two turns in conversations is not only the first step in analyzing dialogue structures, but also valuable for training dialogue systems. This paper presents a QA matching model considering both distance information and dialogue history by two simultaneous attention mechanisms called mutual attention. Given scores computed by the trained model between each non-question turn with its candidate questions, a greedy matching strategy is used for final predictions. Because existing dialogue datasets such as the Ubuntu dataset are not suitable for the QA matching task, we further create a dataset with 1,000 labeled dialogues and demonstrate that our proposed model outperforms the state-of-the-art and other strong baselines, particularly for matching long-distance QA pairs.
description: Accepted at ECAI2020
Cluster mergers, core oscillations, and cold fronts
Creators: name: Tittley, Eric R.
name: Henriksen, Mark
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use numerical simulations with hydrodynamics to demonstrate that a class of cold fronts in galaxy clusters can be attributed to oscillations of the dark matter distribution. The oscillations are initiated by the off-axis passage of a low-mass substructure. From the simulations, we derive three observable morphological features indicative of oscillations: 1) The existence of compressed isophotes; 2) The regions of compression must be alternate (opposite and staggered) and lie on an axis passing through the center of the cluster; 3) The gradient of each compression region must pass through the center of the cluster. Four of six clusters reported in the literature to have cold fronts have morphologies consistent with the presence of oscillations. The clusters with oscillations are A496, A1795, A2142, and RX J1720.1+2638. Galaxy clusters A2256 and A3667 are not consistent so the cold fronts are interpreted as group remnants. The oscillations may be able to provide sufficient energy to solve the cooling-flow problem and, importantly, provide it over an extended duration.
description: Submitted to ApJ. 11 pages, 9 figures
EU investment support for small and medium-sized enterprises in southern Europe: to be recommended?
Creators: name: Forstner, Bernhard
name: Koester, Ulrich
name: Forstner, Bernhard
name: Koester, Ulrich
Publisher: name: Unknown
Year: 2014
Subjects: Financial Economics

description: The president of the European Parliament, Martin Schulz, has repeatedly pointed out that small and medium-sized enterprises (SMEs) in some southern European countries face major constraints to access to credit and that removing these constraints for SMEs could contribute to reducing unemployment. He promised to support special loans programs. According to press reports the European Central Bank is also considering low-cost loans for national banks if they provide credit for SMEs. In this article it is argued theoretically and empirically that the single-business investment support does not address the causes of high unemployment and could result, due to the difficulty in monitoring, in great inefficiencies. Studies that have focused on rural development measures to improve regional economic structures do not show that investment support is an efficient economic policy measure. There are more efficient measures available. An ex-ante evaluation, which is in accordance with EU regulations for the conception of new policies, projects and programs (EU Commission 2006), was conducted to test this recommendation. Any adoption of such policy, should be based on the results of economic analyses and - if available - empirical studies.
Social media use, social bot literacy, perceived threats from bots, and perceived bot control: a moderated-mediation model
Creators: name: Fang, Wei
name: Nie, Chen
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy
subject: Mental Health

description: The rapid development and widespread presence of social bots online has been transforming users’ online news environment. This study adopts a human-centered perspective to investigate the impact of individuals’ social media usage experiences on their social bot literacy, perception of threats posed from bots, and perceived social bot control within the context of China. We collected data from surveying 1159 Sina Weibo users and conducting interviews among 20 participants. The data were used to examine (1) the relationship between social media use and social bot literacy and perceived bot control, (2) the mediating role of social bot literacy between social media use and perceived bot control, and (3) the moderating role of perceived threat from bots in this relationship. The results of the analysis suggested a significant moderated mediation model in which social bot literacy mediated the correlation between social media use and perceived bot control and individuals’ perceived threat further moderated this relationship. Specifically, for those with a higher level of perceived threat, their indirect effect of social media use was lower compared to those with a lower level of perceived threat from bots.
title: Dialogic space during mother-child interaction in the early years
Creators: name: Rooke, Eliza Katey
Publisher: name: The Open University
Year: 2016

description: The co-construction of meaning-making during mother-child activity around the concepts of colour and size is considered through the lens of socio-cultural theory. The metaphor of scaffolding is critiqued in relation to its utility for explaining interactions between parent and child in problem-solving activity. Specifically, this thesis offers an investigation of the extent to which Wegerif’s (2011b) notion of ‘dialogic space’ can inform a better understanding of the processes of meaning-making that take place between a mother and her pre-school child. An exploratory, inductive case study was conducted in a pre-school setting with 13 mother-child dyads. The children were 30-36 months old. The dyads were observed while engaged in activities that involved sorting blocks according to their colour and size. Video-recordings of the observations were transcribed and the transcriptions were then subject to a thematic Socio-Cultural Discourse Analysis (SCDA). Also mothers took part in semi-structured interviews, incorporating Video-Stimulated Reflective Dialogue (VSRD). These were used to shed light on the mothers’ perspectives of the activity and informed my analysis of the transcriptions. The theoretical benefits of this thesis include extended theorising about dialogic space by considering the context of parent and pre-school children’s dialogues. It provides significant contributions to educational theory by evidencing how pause and physical and psychological resources can be mobilised by interlocutors to resource their construction of dialogic space during activities with young children. Implications for practice arising from this study include the need for practitioners to be alert to how the theory of dialogic space can inform a better understanding of how young children can be creatively engaged in dialogue in asymmetrical interactions that harness their understanding of colour and size.
Central object segmentation by deep learning for fruits and other roundish objects
Creators: name: Fukuda, Motohisa
name: Okuno, Takashi
name: Yuki, Shinya
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: We present CROP (Central Roundish Object Painter), which identifies and paints the object at the center of an RGB image. Primarily CROP works for roundish fruits in various illumination conditions, but surprisingly, it could also deal with images of other organic or inorganic materials, or ones by optical and electron microscopes, although CROP was trained solely by 172 images of fruits. The method involves image segmentation by deep learning, and the architecture of the neural network is a deeper version of the original U-Net. This technique could provide us with a means of automatically collecting statistical data of fruit growth in farms. As an example, we describe our experiment of processing 510 time series photos automatically to collect the data on the size and the position of the target fruit. Our trained neural network CROP and the above automatic programs are available on GitHub with user-friendly interface programs.
description: The version 2 contains a new section about the automatic processing of time series photos. All the programs are available at https://github.com/MotohisaFukuda/CROP
Attention advertising : the cultural economy of voluntary watching and involuntary looking
Creators: name: Shortt, Jennifer
Publisher: name: University of British Columbia
Year: 2010

description: This thesis investigates the visual event of consuming advertisements as a form of labour. Using Heller’s "attention theory of value", the thesis argues that among the most valuable forms of labour in today’s capitalist society is the productive value of human attention. The attention of viewers is interpellated by advertisements in two ways: watching and looking. To illustrate how viewers consume advertisements by watching, a case study focused on product promotion on the "Ellen DeGeneres Show" is presented. In order to interpellate viewers’ attention, companies use product promotions such as "free gifts" within shows in order to avoid possibly losing their attention in commercials. Looking as labour is illustrated via a case study of advertisements in three different Vancouver restaurant restrooms: 99 Cham, Moxie’s Classic Grill and TGI Friday’s. The placement of advertisements in restrooms is also strategic, in that viewers’ attention is captured by the simple act of looking.
Russia's agricultural modernisation policy under WTO commitments: Why the EU's Common Agricultural Policy is a poor model
Creators: name: Petrick, Martin
name: Petrick, Martin
Publisher: name: Unknown
Year: 2014
Subjects: Agricultural and Food Policy
Agricultural Finance
Livestock Production/Industries

description: How to revitalise the agricultural sector under the commitments of membership in the World Trade Organisation (WTO) has emerged as a major policy challenge for the Russian government. According to the current State Programme for the Development of Agriculture, a key support channel is via concessional credits to the livestock sector, which was singled out as the largest recipient of interest subsidies in 2013 - 2020. Currently, these payments are not considered green box compatible under WTO commitments, whereas similar measures within the EU's Common Agricultural Policy (CAP) are. While the Russian government may face little difficulty in dressing up its investment subsidies to make them look like green box compatible, the CAP is regarded here as a poor guide for policy reform. The available evidence shows that structural policy elements of the CAP were inefficient in reaching any of the manifold goals they were hoped to achieve. Drawing on the example of East Germany, it is argued that reforms of the institutional environment of agriculture are at least as important for successful agricultural modernisation as the generous availability of funding
Physarum plicatum Nann.
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 plicatum

description: * Physarum plicatum Nann. -Bremek. & Y. Yamam. (18 FC, 1 loc, 4 ps, Fig. 5E)
 Loc. 10 Mahé: On fallen leaves of Cinnamomum verum, AM 3131, TK2979 (4FC). On fallen palm leaf of Deckenia nobilis, AM 3128, TK2975 (2FC). On fallen leaves of Dillenia ferruginea, AM 3122, TK2967 (7FC). On fallen palm leaf of Pandanus balfourii, AM 3145, TK3002 (5FC).
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 pages 238-239, DOI: 10.11646/zootaxa.4851.2.1, http://zenodo.org/record/4407410
Discovery of a Second L Subdwarf in the Two Micron All Sky Survey
Creators: name: Burgasser, Adam J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: I report the discovery of the second L subdwarf identified in the Two Micron All Sky Survey, 2MASS J16262034+3925190. This high proper motion object (mu = 1.27+/-0.03 "/yr) exhibits near-infrared spectral features indicative of a subsolar metallicity L dwarf, including strong metal hydride and H2O absorption bands, pressure-broadened alkali lines, and blue near-infrared colors caused by enhanced collision-induced H2 absorption. This object is of later type than any of the known M subdwarfs, but does not appear to be as cool as the apparently late-type sdL 2MASS 0532+8246. The radial velocity (Vrad = -260+/-35 km/s) and estimated tangential velocity (Vtan ~ 90-210 km/s) of 2MASS 1626+3925 indicate membership in the Galactic halo, and this source is likely near or below the hydrogen burning minimum mass for a metal-poor star. L subdwarfs such as 2MASS 1626+3925 are useful probes of gas and condensate chemistry in low-temperature stellar and brown dwarf atmospheres, but more examples are needed to study these objects as a population as well as to define a rigorous classification scheme.
description: 11 pages, 3 figures, accepted for publication ApJ Letters, v. 614 October 2004
Young adults with intellectual disability, their relatives, and the Internet: perceptions and use during COVID-19 confinement in Spain
Creators: name: Delgado, Pablo
name: Fajardo, Inmaculada
name: Lucas, Beatriz
name: Ferrer, Antonio
name: Ávila, Vicenta
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Mental Health

description: This investigation explored the use of the Internet in Spain by young adults with intellectual disability who were active Internet users, as well as their perceptions and those of their relatives about the Internet’s potential benefits and risks for this population. Additionally, this study explored changes in these perceptions and the Internet use during the home confinement due to the COVID-19 pandemic. A sample of 35 young adults with intellectual disability and one of their relatives, respectively (i.e. 35 relatives), completed an online survey during May 2020. Results indicated that young people with intellectual disability are aware of the potential risks to a limited extent. In addition, the participants with intellectual disability increased their Internet use and their perception of its benefits during confinement. However, their relatives gave greater importance to the potential risks, but scarcely supervised young adults with intellectual disability when accessing the Internet. We conclude that, beyond computer literacy and web access skills, young people with intellectual disability may need further training on how to identify and deal with the potential risks of the Internet use, and how to maximise its potential benefits. We also highlight the need to provide their relatives with more educational resources.
RP-CARS reveals molecular spatial order anomalies in myelin of an animal model of Krabbe disease
Creators: name: de Vito, Giuseppe
name: Cappello, Valentina
name: Tonazzini, Ilaria
name: Cecchini, Marco
name: Piazza, Vincenzo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Quantitative Methods (q-bio.QM)
subject: Tissues and Organs (q-bio.TO)
subject: FOS: Biological sciences

description: Krabbe disease (KD) is a rare demyelinating sphingolipidosis, often fatal in the first years of life. It is caused by the inactivation of the galactocerebrosidase (GALC) enzyme that causes an increase in the cellular levels of psychosine considered to be at the origin of the tissue-level effects. GALC is inactivated also in the Twitcher (TWI) mouse: a genetic model of KD that is providing important insights into the understating of the pathogenetic process and the development of possible treatments. In this article an innovative optical technique, RP-CARS, is proposed as a tool to study the degree of order of the CH2 bonds inside the myelin sheaths of TWI-mice sciatic-nerve fibres. RP-CARS, a recently developed variation of CARS microscopy, is able to combine the intrinsic chemical selectivity of CARS microscopy with molecular-bond-spatial-orientation sensibility. This is the first time RP-CARS is applied to the study of a genetic model of a pathology, leading to the demonstration of a post-onset progressive spatial disorganization of the myelin CH2 bonds. The presented result could be of great interest for a deeper understanding of the pathogenic mechanisms underlying the human KD and, moreover, it is an additional proof of the experimental validity of this microscopy technique.
description: 19 pages, 7 figures. This is the pre-peer reviewed version of an article that has been published in final form on Journal of Biophotonics
Hierarchy of energy scales and field-tunable order by disorder in dipolar-octupolar pyrochlores
Creators: name: Placke, Benedikt
name: Moessner, Roderich
name: Benton, Owen
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Dipolar-octupolar pyrochlore magnets in a strong external magnet field applied in the [110] direction are known to form a `chain' state, with subextensive degeneracy. Magnetic moments are correlated along one-dimensional chains carrying effective Ising degrees of freedom which are noninteracting on the mean-field level. Here, we investigate this phenomenon in detail, including the effects of quantum fluctuations. We identify two distinct types of chain phases, both featuring distinct subextensive, classical ground state degeneracy. Focussing on one of the two kinds, we discuss lifting of the classical degeneracy by quantum fluctuations. We map out the ground-state phase diagram as a function of the exchange couplings, using linear spin wave theory and real-space perturbation theory. We find a hierarchy of energy scales in the ground state selection, with the effective dimensionality of the system varying in an intricate way as the hierarchy is descended. We derive an effective two-dimensional anisotropic triangular lattice Ising model with only three free parameters which accounts for the observed behavior. Connecting our results to experiment, they are consistent with the observation of a disordered chain state in Nd$_2$Zr$_2$O$_7$. We also show that the presence of two distinct types of chain phases has consequences for the field-induced breakdown of the apparent $U(1)$ octupolar quantum liquid phase recently observed in Ce$_2$Sn$_2$O$_7$.
title: Electron acceleration and loss caused by wave-particle interactions in the Van Allen radiation belts
Creators: name: Kersten, Tobias
Publisher: name: The Open University
Year: 2016

description: Modern society relies substantially on satellite technology as it is involved in vital services like telecommunication services, Earth observation, navigation, and many more. There are more than 1000 operational satellites in Earth orbit and most of these spend at least some of their time in the harsh environment of the Van Allen radiation belts. The radiation belts are usually split into two regions, the inner and the outer radiation belt. While the inner belt is considered stable, the flux of electrons in the outer belt can vary over several orders of magnitude, reaching levels that may disrupt satellite operations. It is therefore important to understand the variability of the outer belt and ultimately to predict its behaviour. In this thesis, the radiation belts are described by the BAS Radiation Belt Model (BAS-RBM) which solves a 3D diffusion equation. The BAS-RBM requires accurate diffusion coefficients that describe the interaction between electrons and plasma waves. The most important plasma waves are chorus, plasmaspheric hiss, and EMIC waves. Here, new statistical models of the diffusion coefficients for these waves are presented, which considerably improve existing models. Among others, they benefit from better global wave models due to improved satellite coverage, and revised wave normal angle and plasma density models. The results show that chorus waves are an important acceleration and loss mechanism at energies up to about 1MeV and for all pitch-angles, while plasmaspheric hiss is found to be an essential loss process in the same energy and pitch-angle range. In contrast, EMIC waves proved to be a relevant loss process for ultrarelativistic electrons, but only at lower pitch-angles. The work presented here has led to a better understanding of the variability of the outer radiation belt and has considerably improved the accuracy and reliability of the modelling and forecasting capabilities.
Dinâmica tecnológica e da produção agropecuária em Minas Gerais entre 1996 e 2006
Creators: name: Gomes, Adriano Provezano
name: Alcantara Filho, José Luiz
name: Scalco, Paulo Roberto
name: Gomes, Adriano Provezano
name: Alcantara Filho, José Luiz
name: Scalco, Paulo Roberto
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agribusiness
subject: Productivity Analysis
subject: Technological change
subject: agriculture and husbandry
subject: use of factors

description: This paper aims to analyze the use of factors of production, as well as the impacts of technological changes in the agricultural and husbandry sector of Minas Gerais, during the period of 1996-2006. It was used the Malmquist total factor productivity index in order to identify regions in which technological progress had occurred. Based on this analysis it can be seen that 67% of the microregions presented some kind of technological advancement. Then the technological changes were analyzed so that they could be classified as capital-saving or labor-saving. It was found that the regions in which technological progress had occurred are responsible for 84% of the agricultural and husbandry production in the state. Another point observed was the significant predominance of labor-saving technologies. This new dynamics in agricultural and husbandry technologies in the state of Minas Gerais has impacted the use of factors, reducing the production elasticity of labor and increasing the production elasticity of capital.
TRANSMISSÃO DE PREÇOS E CUSTOS DE TRANSAÇÃO NO MERCADO DE SOJA MATO-GROSSENSE: UMA ABORDAGEM POR MODELOS THRESHOLD
Creators: name: Silva, Murilo Massaru Da
name: Frascaroli, Bruno Ferreira
name: Sobel, Tiago Farias
name: Silva, Murilo Massaru Da
name: Frascaroli, Bruno Ferreira
name: Sobel, Tiago Farias
Publisher: name: Unknown
Year: 2013
Subjects: subject: Demand and Price Analysis
subject: Research Methods/ Statistical Methods
subject: Soybean
subject: price transmission
subject: transaction costs
subject: threshold models

description: The main goal of this study was to analyze the soybean price transmission between different cities of MatoGrosso – MT, Brazil, considering the existence of transaction costs. This state was chosen due to its high production and soybeans processing capacity. In order to capture the transaction costs presence over the soybean spot price transmission in MatoGrosso, three regimes threshold models were estimated. The models Self Exciting Threshold Auto-Regressive (SETAR), described in Tong and Lim (1980), provided results with the three regimes that corroborate to the existence of a ‘neutral band’. Besides, the threshold parameters estimated appears to be significantly positively correlated with the transportation costs, which can be so much important to take decisions about price arbitrages. Furthermore, the obtained results estimated with the TVEC model do not indicate the existence of a neutral band. However, in most cases, price variations take more time to be transmitted in the intermediary regime, which indicates that TVEC model also captured the existence of transaction costs.
Quantum Invariant, Modular Form, and Lattice Points
Creators: name: Hikami, Kazuhiro
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study the Witten--Reshetikhin--Turaev SU(2) invariant for the Seifert manifold with 4-singular fibers. We define the Eichler integrals of the modular forms with half-integral weight, and we show that the invariant is rewritten as a sum of the Eichler integrals. Using a nearly modular property of the Eichler integral, we give an exact asymptotic expansion of the WRT invariant in $N\to\infty$. We reveal that the number of dominating terms, which is the number of the non-vanishing Eichler integrals in a limit $τ\to N\in\mathbb{Z}$, is related to that of lattice points inside 4-dimensional simplex, and we discuss a relationship with the irreducible representations of the fundamental group.
description: 29 pages
PRODUTIVIDADE TOTAL DOS FATORES NA AGRICULTURA GOIANA: UMA ANÁLISE PARA AS CULTURAS DE CANA-DE-AÇÚCAR, MILHO E SOJA
Creators: name: Souza, Rafael Oliveira De
name: Teixeira, Sônia Milagres
name: Souza, Rafael Oliveira De
name: Teixeira, Sônia Milagres
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agribusiness
subject: Productivity Analysis
subject: Efficiency
subject: technology and growth

description: The 1970 decade can be considered the beginning of Brazilian agricultural development and modernization. This process represented a new concept, which aimed to change the technical basis of production and thereby raise productivity standards in the sector. The objective of this study is based on research by a measure of total factor productivity (TFP), the constraints of crop productivity of sugar cane, corn and soybeans developed in the micro regions of Goias state, for the periods 1985, 1995/96 and 2006. Goias is positioned as one of the main national development poles of activities related to the agribusiness. In turn, the selected crops represent the main agenda items of production in the state in terms of acreage and production volume. To estimate the productivity measure the Malmquist index was used. It is estimated with the help of the DEA - Data Envelopment Analysis. The survey results record substantial gains in productivity for the selected crops in the periods of 1985-2006. However, considering two intermediate stages, 1985-1995/96 and 1995/96-2006, it was found in the first higher levels of productivity which were not sustained in the second stage. As conditioning such result it is possible to register the importance of technological progress.
Language-Integrated Updatable Views (Extended version)
Creators: name: Horn, Rudi
name: Fowler, Simon
name: Cheney, James
Publisher: name: arXiv
Year: 2020
Subjects: subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: Relational lenses are a modern approach to the view update problem in relational databases. As introduced by Bohannon et al. (2006), relational lenses allow the definition of updatable views by the composition of lenses performing individual transformations. Horn et al. (2018) provided the first implementation of incremental relational lenses, which demonstrated that relational lenses can be implemented efficiently by propagating changes to the database rather than replacing the entire database state. However, neither approach proposes a concrete language design; consequently, it is unclear how to integrate lenses into a general-purpose programming language, or how to check that lenses satisfy the well-formedness conditions needed for predictable behaviour. In this paper, we propose the first full account of relational lenses in a functional programming language, by extending the Links web programming language. We provide support for higher-order predicates, and provide the first account of typechecking relational lenses which is amenable to implementation. We prove the soundness of our typing rules, and illustrate our approach by implementing a curation interface for a scientific database application.
description: Extended version of paper accepted for IFL'19 post-proceedings
Constraint Algebra in Causal Loop Quantum Gravity
Creators: name: Shojai, Fatimah
name: Shojai, Ali
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: de-Broglie--Bohm causal interpretation of canonical quantum gravity in terms of Ashtekar new variables is built. The Poisson brackets of (deBroglie--Bohm) constraints are derived and it is shown that the Poisson bracket of Hamiltonian with itself would change with respect to its classical counterpart.
description: 3 pages, to appear in Proceedings of the 11th Regional Conference on Mathematical Physics (2004), Tehran, Iran
ANÁLISE DE CLUBE DE CONVERGÊNCIA PARA O MERCADO BRASILEIRO DO MILHO
Creators: name: Tabosa, Francisco José Silva
name: Irffi, Guilherme Diniz
name: Penna, Christiano Modesto
name: Tabosa, Francisco José Silva
name: Irffi, Guilherme Diniz
name: Penna, Christiano Modesto
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agribusiness
subject: Demand and Price Analysis
subject: Price of Corn
subject: Brazilian market Convergence Clubs

description: This study aimed to analyze the convergence of prices in the Brazilian market for corn, using the methodology of time series analysis of Phillips and Sul (2007). The results showed that corn prices are not converging to one common level. However, the analysis suggested the formation of two convergence clubs, with two units cross diverging altogether. The first, formed by markets Mogiana/SP, Cascavel/PR, Chapecó/ SC, Carazinho/SP, Rondonópolis/MT and São Paulo/SP. The second group is formed by the markets of Campo Grande/MS, Uberlândia/MG, Maringá/PR, Ponta Grossa/ PR and Rio Verde/GO. The markets that were presented divergent: Campinas/SP and Porto Alegre/RS.
Dynamic properties of quasi-confined colloidal hard-sphere liquids near the glass transition
Creators: name: Schrack, Lukas
name: Petersen, Charlotte F.
name: Jung, Gerhard
name: Caraglio, Michele
name: Franosch, Thomas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The complex behavior of confined fluids arising due to a competition between layering and local packing can be disentangled by considering quasi-confined liquids, where periodic boundary conditions along the confining direction restore translational invariance. This system provides a means to investigate the interplay of the relevant length scales of the confinement and the local order. We provide a mode-coupling theory of the glass transition (MCT) for quasi-confined liquids and elaborate an efficient method for the numerical implementation. The nonergodicity parameters in MCT are compared to computer-simulation results for a hard-sphere fluid. We evaluate the nonequilibrium-state diagram and investigate the collective intermediate scattering function. For both methods, nonmonotonic behavior depending on the confinement length is observed.
description: Accepted by J. Stat. Mech.: Theory and Experiments
ESTIMATIVA DO CUSTO RODOVIÁRIO DA SOJA: UMA ANÁLISE DA ROTA SORRISO-SANTOS
Creators: name: Oliveira, Andréa Leda Ramos De
name: Cicolin, Lucas
name: Santos, Maraisa Cristina Dos
name: Oliveira, Andréa Leda Ramos De
name: Cicolin, Lucas
name: Santos, Maraisa Cristina Dos
Publisher: name: Unknown
Year: 2013
Subjects: Agribusiness
Production Economics

description: The establishment of soybean in Brazil was fundamental to consolidation of agribusiness as a key activity of the Brazilian economy. The pursuit of competitiveness based on the management of costs is the main component for the full establishment of soybean in Brazil. In this way, an important component of the costs of the activity is the transport, especially road costs. This modal plays a fundamental role as an integration of the main producing areas to consuming centers, ports and intermodal terminals exporters. This study aims to estimate and analyze the cost of road transport of soybeans in 2012. To that end, the selected route starting in the city of Sorriso-MT (important production hub) and ending in out of the Port of Santos-SP (leading exporter). Among the main results, it was found that the main factors increasing or decreasing highway costs are fuel and purchase of automotive vehicle. Thus, the periodic systematization of highway costs is an important management tool to support strategic decisions on transport planning for producers, cooperatives and trading firms.
Dilatonic Inflation and SUSY Breaking in Modular-Invariant Supergravity
Creators: name: Hayashi, Mitsuo J.
name: Watanabe, Tomoki
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The theory of inflation will be investigated as well as supersymmetry breaking in the context of supergravity, incorporating the target-space duality and the non-perturbative gaugino condensation in the hidden sector. The inflation and supersymmetry breaking occur at once by the interplay between the dilaton field as inflaton and the condensate gauge-singlet field. The model satisfies the slow-roll condition which solves the eta-problem. When the particle rolls down along the minimized trajectry of the potential V(S,Y) at a duality invariant fixed point T=1, we can obtain the e-fold value \sim 57. And then the cosmological parameters obtained from our model well match with the recent WMAP data combined with other experiments. This observation is suggesting to consider the string-inspired supergravity as the fundamental of the theory of the evolution of the universe as well as the particle theory.
description: 4pages, 4 eps figures, talk at ICHEP2004, Aug. 16-22, 2004, Beijing
Investigating the role of histone acetylation in yeast FACT complex function
Creators: name: Shimizu, Jed Chih-Leh
Publisher: name: University of British Columbia
Year: 2010

description: The FACT (facilitates chromatin transactions) complex, a heterodimer comprised of Spt l6p and Pob3p, is involved in a number of processes involving DNA, including transcription initiation, elongation, and repression, DNA replication, and DNA repair. FACT is thought to facilitate these processes through its ability to bind histones and reversibly alter nucleosomal structure modulating DNA accessibility. Recent data has shown that the Sptl6p subunit of FACT interacts with Sas3p of the NuA3 HAT (histone acetyl transferase) complex. Interestingly, mutants of NuA3 share none of the many phenotypes observed in FACT mutants, suggesting that this putative interaction may be redundant to other unknown FACT interactions. In the first part of this study, we confirmed the interaction between FACT and NuA3, and proceeded to describe, for the first time, an interaction between FACT and the ADA HAT complex both in vivo and in vitro. The interaction of FACT with NuA3 and ADA was then mapped to the Nterminal 482 residues of the Sptl6Δp FACT subunit. However, attempts to implicate this interaction with known FACT functions were unsuccessful. Biochemical approaches similarly failed to demonstrate a role for FACT in NuA3 and ADA complex function. The second part of this study focused on the novel spt16Δ922 mutant, which expresses 182 residues more of the Sptl6Δp polypeptide than the sptl6ΔNTD allele, yet possesses a number of mutant phenotypes. Our results show that the spt16Δ922 mutation causes a loss in histone H3 acetylation, supporting the hypothesis that the protein encoded by spt16Δ922 is interfering with normal histone interactions. This loss in histone acetylation was shown to parallel the generation of an spt phenotype, suggesting a possible role for histone acetylation in preventing aberrant transcription. However, further work examining the role of histone acetylation with respect to FACT yielded conflicting results. We conclude that spt16Δ922 is interfering with histone modifications, although the molecular basis of this is as of yet unknown.
The effect of material defects on resonant spin wave modes in a nanomagnet
Creators: name: Abeed, Md Ahsanul
name: Sahoo, Sourav
name: Winters, David
name: Barman, Anjan
name: Bandyopadhyay, Supriyo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We have theoretically studied how resonant spin wave modes in an elliptical nanomagnet are affected by fabrication defects, such as small local thickness variations. Our results indicate that defects of this nature, which can easily result from the fabrication process, or are sometimes deliberately introduced during the fabrication process, will significantly alter the frequencies, magnetic field dependence of the frequencies, and the power and phase profiles of the resonant spin wave modes. They can also spawn new resonant modes and quench existing ones. All this has important ramifications for multi-device circuits based on spin waves, such as phase locked oscillators for neuromorphic computing, where the device-to-device variability caused by defects can be inhibitory.