cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Surface and oceanic habitability of Trappist-1 planets under the impact of flares
Creators: name: Estrela, Raissa
name: Palit, Sourav
name: Valio, Adriana
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The discovery of potentially habitable planets around the ultracool dwarf star Trappist-1 naturally poses the question: could Trappist-1 planets be home to life? These planets orbit very close to the host star and are most susceptible to the UV radiation emitted by the intense and frequent flares of Trappist-1. Here we calculate the UV spectra (100 - 450 nm) of a superflare observed on Trappist-1 with the K2 mission. We couple radiative transfer models to this spectra to estimate the UV surface flux on planets in the habitable zone of Trappist-1 (planets $e$, $f$, and $g$), assuming atmospheric scenarios based on a pre-biotic and an oxygenic atmosphere. We quantify the impact of the UV radiation on living organisms on the surface and on a hypothetical planet ocean. Finally, we find that for non-oxygenic planets, UV resistant lifeforms would survive on the surface of planets f and g. Nevertheless, more fragile organisms (i.e. \textit{E. coli}) could be protected from the hazardous UV effects at ocean depths greater than 8m. If the planets have an ozone layer, any lifeforms studied here would survive in the HZ planets.
description: 13 pages, 6 figures, accepted for publication in Astrobiology
Notes on Stein-Sahi representations and some problems of non $L^2$ harmonic analysis
Creators: name: Neretin, Yuri A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Representation Theory (math.RT)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 22E46, 22E70, 43A90, 22E30, 43A85

description: We discuss one natural class of kernels on pseudo-Riemannian symmetric spaces.
description: 40pp
Measurement invariance of body image across the adult life span : can we compare across age and gender with body image measures?
Creators: name: Rusticus, Shayna Ann
Publisher: name: University of British Columbia
Year: 2009

description: The issue of body image has been widely discussed in the literature as it pertains to adolescents and young adults; however, body image issues among older individuals, and especially among older men, have been largely ignored. Many of the instruments used to measure the theoretical construct of body image have largely been developed with younger populations. However, before these instruments can be applied to older populations, they must exhibit adequate cross-group equivalence. The hypotheses that the Multidimensional Body- Self Relations Questionnaire (MBSRQ), the Appearance Schemas Inventory-Revised (ASI-R), and the Body Image Quality of Life Inventory (BIQLI) can be used to make cross-age and gender comparisons was examined in a sample of 422 men (185 young, 131 middle-aged, 106 older) and 840 women (364 young, 267 middle-aged, 209 older). The results of the measurement invariance tests (i.e., configural, metric, and scalar) for the subscales of the MBSRQ clearly illustrate that the multidimensional nature of body image is perceived quite differently across the age and gender groups and thus the applicability of these subscales depends on both the characteristics of the sample and the goals of the study. The results for the ASI-R revealed that all groups, except for the older women, met requirements for all three levels of invariance tested and that comparisons may be conducted across age group for men and across gender for young and middle-aged adults. Results for the BIQLI indicated that comparisons may be conducted across all age and gender groups. The inferences that may be made at each level of configural, metric, and scalar invariance are highlighted. For those scales exhibiting scalar invariance, appropriate comparisons are conducted and discussed.
Inventory of water storage types in the Blue Nile and Volta River Basins
Creators: name: Johnston, Robyn M.
name: McCartney, Matthew P.
name: Johnston, Robyn M.
name: McCartney, Matthew P.
Publisher: name: Unknown
Year: 2010
Subjects: subject: Environmental Economics and Policy
subject: Farm Management
subject: Water storage
subject: River basins
subject: Reservoirs
subject: Ponds
subject: Tanks
subject: Groundwater
subject: Soil moisture
subject: Wetlands

description: For agriculture there is a continuum of water storage options, ranging from groundwater aquifers, soil water, natural wetlands and small ponds and tanks to large reservoirs. In any situation each of these has its own niche in terms of technical feasibility, socioeconomic sustainability and impact on public health and the environment. Planning storage requires insight into impending needs and also a good understanding of what already exists and what was, and was not, successful, in the past. This report provides an inventory of existing and prospective water storage in the Ghanaian Volta and the Ethiopian Blue Nile basins. It provides as much quantitative data as possible, but highlights both the dearth of readily available information and the lack of integrated planning of storage in both basins. Recommendations are made for improved planning in the future.
Curvature and Gauss-Bonnet defect of global affine hypersurfaces
Creators: name: Siersma, Dirk
name: Tibar, Mihai
Publisher: name: arXiv
Year: 2004
Subjects: subject: Differential Geometry (math.DG)
subject: Algebraic Geometry (math.AG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 32S20 (Primary); 53C65; 14B07; 32S30 (Secondary)

description: The total curvature of complex hypersurfaces in $\bC^{n+1}$ and its variation in families appear to depend not only on singularities but also on the behaviour in the neighbourhood of infinity. We find the asymptotic loss of total curvature towards infinity and we express the total curvature and the Gauss-Bonnet defect in terms of singularities and tangencies at infinity.
description: 15 p., some changes in editing
The finiteness conjecture holds in SL(2,Z>=0)^2
Creators: name: Panti, Giovanni
name: Sclosa, Davide
Publisher: name: arXiv
Year: 2020
Subjects: subject: Dynamical Systems (math.DS)
subject: Numerical Analysis (math.NA)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 05A05, 15A60, 37F32

description: Let A,B be matrices in SL(2,R) having trace greater than or equal to 2. Assume the pair A,B is coherently oriented, that is, can be conjugated to a pair having nonnegative entries. Assume also that either A,B^(-1) is coherently oriented as well, or A,B have integer entries. Then the Lagarias-Wang finiteness conjecture holds for the set {A,B}, with optimal product in {A,B,AB,A^2B,AB^2}. In particular, it holds for every matrix pair in SL(2,Z>=0).
description: To appear in Nonlinearity; we sincerely thank the referee for the precious remarks. The ArXiv version is outdated, but we cannot replace it due to copyright reasons. The final author-created, un-copyedited version of this paper is available from the first author's home page
Impact of management interventions on the performance of five irrigation schemes in Sri Lanka
Creators: name: Imbulana, K.A.U.S.
name: Merrey, Douglas J.
name: Imbulana, K.A.U.S.
name: Merrey, Douglas J.
Publisher: name: Unknown
Year: 1995
Subjects: subject: Farm Management
subject: Institutional and Behavioral Economics
subject: Land Economics/Use
subject: Irrigation programs
subject: Performance evaluation
subject: Irrigation management
subject: Intervention
subject: Irrigation systems
subject: Monitoring
subject: Performance indexes
subject: History
subject: Farmers associations
subject: Farmer participation
subject: Farmer-agency interactions
subject: Communication
subject: Organizations
subject: Water potential
subject: Rice
subject: Crop yield
subject: Water supply
subject: Land productivity
subject: Rain
subject: Data collection

description: This working paper is the outcome of a data collection process initiated under the advice of Dr. Shigeo Yashima of the International Irrigation Management Institute (IIMI). The objective of this data collection process was to make a preliminary assessment of irrigation performance in Sri Lanka using irrigation systems with different backgrounds to identify areas for further research.
Summa theologiae, prima pars secundae partis
Creators: name: Thomas
Publisher: name: [s.n.]
Year: 1445

description: Thomas de Aquino
description: Öffentliche Bibliothek der Universität Basel
description: Lateinisch
description: Aus der Kartause Basel, vgl. Besitzeintrag "Liber Cartusiensium in Basilea minori" auf 1r, und 346v; von dort auch die alte Signatur "h xviii". Rückentitel "Prima secunde sancti Thomae de Aquino" von Carpentarius, oberhalb "Thomae de Aquino ordinis praedicatorum prima pars secundę partis summae theo[...]" von Pfister.
description: Verzeichnung=Description=Inventaire Dez. 2009 Titel, Jahr und Signatur nach: unpublizierte Beschreibung
description: Verzeichnung=Description=Inventaire Sept. 2014 HAN-Katalogisierungsregeln Minimalaufnahme nach: unpublizierte Beschreibung
description: Verzeichnung=Description=Inventaire November 2023 HAN-Katalogisierungsregeln Ergänzung der Minimalaufnahme nach Autopsie und ungedruckter Beschreibung
description: Digitalisierung=Digitization=Numérisation Oktober 2020 TIFF
description: Erschliessungsniveau Minimalniveau
description: Fragment einer Lederschliesse, separiert und neu verpackt im September 2023
Fluid model for a network operating under a fair bandwidth-sharing policy
Creators: name: Kelly, F. P.
name: Williams, R. J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60K30, 90B15 (Primary)

description: We consider a model of Internet congestion control that represents the randomly varying number of flows present in a network where bandwidth is shared fairly between document transfers. We study critical fluid models obtained as formal limits under law of large numbers scalings when the average load on at least one resource is equal to its capacity. We establish convergence to equilibria for fluid models and identify the invariant manifold. The form of the invariant manifold gives insight into the phenomenon of entrainment whereby congestion at some resources may prevent other resources from working at their full capacity.
Assessing unidimensionality of psychological scales : using individual and integrative criteria from factor analysis
Creators: name: Slocum, Suzanne Lynn
Publisher: name: University of British Columbia
Year: 2009

description: Whenever one uses a composite scale score from item responses, one is tacitly assuming that the scale is dominantly unidimensional. Investigating the unidimensionality of item response data is an essential component of construct validity. Yet, there is no universally accepted technique or set of rules to determine the number of factors to retain when assessing the dimensionality of item response data. Typically factor analysis is used with the eigenvalues-greater- than-one rule, the ratio of first-to-second eigenvalues, parallel analysis (PA), root-mean-square- error-of-approximation (RMSEA), or hypothesis testing approaches involving chi-square tests from Maximum Likelihood (ML) or Generalized Least Squares (GLS) estimation. The purpose of this study was to investigate how these various procedures perform individually and in combination when assessing the unidimensionality of item response data via a computer simulated design. Conditions such as sample size, magnitude of communality, distribution of item responses, proportion of communality on second factor, and the number of items with nonzero loadings on the second factor were varied. Results indicate that there was no one individual decision-making method that identified undimensionality under all conditions manipulated. All individual decision-making methods failed to detect unidimensionality for the case where sample size was small, magnitude of communality was low, and item distributions were skewed. In addition, combination methods performed better than any one individual decision-making rule in certain sets of conditions. A set of guidelines and a new statistical methodology are provided for researchers. A future program of research is also illustrated.
Additional file 1 of Low birthweight in term singletons mediates the association between maternal smoking intensity exposure status and immediate neonatal intensive care unit admission: the E-value assessment
Creators: name: Kondracki, Anthony J.
Publisher: name: figshare
Year: 2020
Subjects: Neuroscience
Biotechnology
Cancer
Science Policy

description: Additional file 1 Table S1. Distribution of smoking intensity status in early and late pregnancy according to maternal characteristics, singleton term births (37–41 completed weeks gestation), United States, 2016 Supplementary information Overview of mediation analysis and the E-value approach, and additional Table1 are provided in the Supplementary information.
Habitability of the early Earth: Liquid water under a faint young Sun facilitated by strong tidal heating due to a closer Moon
Creators: name: Heller, René
name: Duda, Jan-Peter
name: Winkler, Max
name: Reitner, Joachim
name: Gizon, Laurent
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Geological evidence suggests liquid water near the Earth's surface as early as 4.4 billion years ago when the faint young Sun only radiated about 70% of its modern power output. At this point, the Earth should have been a global snowball if it possessed atmospheric properties similar to those of the modern Earth. An extreme atmospheric greenhouse effect, an initially more massive Sun, release of heat acquired during the accretion process of protoplanetary material, and radioactivity of the early Earth material have been proposed as reservoirs or traps for heat. For now, the faint-young-sun paradox persists as an important problem in our understanding of the origin of life on Earth. Here we use the constant-phase-lag tidal theory to explore the possibility that the new-born Moon, which formed about 69 million years after the ignition of the Sun, generated extreme tidal friction - and therefore heat - in the Hadean and possibly the Archean Earth. We show that the Earth-Moon system has lost about $3~ \times ~10^{31}$ J (99% of its initial mechanical energy budget) as tidal heat. Tidal heating of roughly 10 W/m$^{-2}$ through the surface on a time scale of 100 million years could have accounted for a temperature increase of up to 5 degrees Celsius on the early Earth. This heating effect alone does not solve the faint-young-sun paradox but it could have played a key role in combination with other effects. Future studies of the interplay of tidal heating, the evolution of the solar power output, and the atmospheric (greenhouse) effects on the early Earth could help in solving the faint-young-sun paradox.
description: published in Pal\"aolontologische Zeitschrift, 22 pages, 5 colored Figures; free full text at Springer Nature: https://rdcu.be/cBZX5
title: 01_0880
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
Production and Flow of Identified Hadrons at RHIC
Creators: name: Velkovska, Julia
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We review the production and flow of identified hadrons at RHIC with a main emphasis on the intermediate transverse momentum region ($2< p_{T} <5$ GeV/$c$). The goal is to unravel the dynamics of baryon production and resolve the anomalously large baryon yields and elliptic flow observed in the experiments.
description: 9 pages, 6 figures; Proceedings contribution to the XXXIVth International Symposium on Multi-Particle Dynamics, Sonoma State University, August 2004
Additional file 1 of Translational simulation for rapid transformation of health services, using the example of the COVID-19 pandemic preparation
Creators: name: Brazil, Victoria
name: Lowe, Belinda
name: Ryan, Leanne
name: Bourke, Rachel
name: Scott, Clare
name: Myers, Simone
name: Kaneko, Hellen
name: Schweitzer, Jane
name: Shanahan, Brenton
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer
subject: Computational Biology

description: Additional file 1. Cath lab report COVID.
Water-resource and land-use issues
Creators: name: Calder, Ian R.
name: Calder, Ian R.
Publisher: name: Unknown
Year: 1998
Subjects: subject: Environmental Economics and Policy
subject: Land Economics/Use
subject: Water resource management
subject: Water use
subject: Case studies
subject: Catchment areas
subject: Land use
subject: Hydrology
subject: Models
subject: Evaporation
subject: Soil moisture
subject: Decision support tools
subject: Runoff
subject: Flow
subject: Forestry
subject: Deforestation
subject: Erosion
subject: Rain

description: This paper reviews perceived notions of the relationships between catchment land use and hydrology and explores whether much of the widely disseminated folklore, so often inextricably linked with issues of land use, is based on myth or reality. Gaps in our knowledge of the underlying processes in relation to land use and hydrology are identified. Our ability to apply this knowledge at different scales ranging from the plot to the catchment and regional scales are discussed and specific examples are drawn from Indian and African case studies. Methods for linking spatially distributed land-use hydrological models with economics and ecology through decision support systems are outlined and proposed as a framework for the integrated management of land and water developments at the catchment scale.
The Ultraluminous Lyman Alpha Luminosity Function at z=6.6
Creators: name: Taylor, Anthony J.
name: Barger, Amy J.
name: Cowie, Lennox L.
name: Hu, Esther M.
name: Songaila, Antoinette
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the luminosity function (LF) for ultraluminous Ly$α$ emitting galaxies (LAEs) at z = 6.6. We define ultraluminous LAEs (ULLAEs) as galaxies with logL(Ly$α$) > 43.5 erg s$^{-1}$. We select our main sample using the g', r', i', z', and NB921 observations of a wide-area (30 deg$^2$) Hyper Suprime-Cam survey of the North Ecliptic Pole (NEP) field. We select candidates with g', r', i' > 26, NB921 $\leq$ 23.5, and NB921 - z' $\leq$ 1.3. Using the DEIMOS spectrograph on Keck II, we confirm 9 of our 14 candidates as ULLAEs at z = 6.6 and the remaining 5 as an AGN at z = 6.6, two [OIII]$λ$5007 emitting galaxies at z = 0.84 and z = 0.85, and two non-detections. This emphasizes the need for full spectroscopic follow-up to determine accurate LFs. In constructing the ULLAE LF at z = 6.6, we combine our 9 NEP ULLAEs with two previously discovered and confirmed ULLAEs in the COSMOS field: CR7 and COLA1. We apply rigorous corrections for incompleteness based on simulations. We compare our ULLAE LF at z = 6.6 with LFs at z = 5.7 and z = 6.6 from the literature. Our data reject some previous LF normalizations and power law indices, but they are broadly consistent with others. Indeed, a comparative analysis of the different literature LFs suggests that none is fully consistent with any of the others, making it critical to determine the evolution from z = 5.7 to z = 6.6 using LFs constructed in exactly the same way at both redshifts.
description: Accepted for publication in ApJ. 12 pages, 8 Figures, 3 Tables
One-loop effective action of QCD at high temperature using the heat kernel method
Creators: name: Megias, E.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Perturbation theory is an important tool to describe the properties of QCD at very high temperatures. Recently a new technique has been proposed to compute the one-loop effective action of QCD at finite temperature by making a gauge covariant derivative expansion, which is fully consistent with topologically small and large gauge transformations (also time dependent transformations). This technique is based on the heat kernel expansion, and the thermal Wilson line plays an essential role. We consider a general SU(N_c) gauge group.
description: 3 pages, no figures. Proceedings for IX Hadron Physics and VII Relativistic Aspects of Nuclear Physics, Angra dos Reis, Rio de Janeiro, March 28 - April 03, 2004
Gender differences in Uganda: the case for access to education and health services
Creators: name: Seewanyana, Sarah
name: Kasirye, Ibrahim
name: Seewanyana, Sarah
name: Kasirye, Ibrahim
Publisher: name: Unknown
Year: 2010
Subjects: subject: Community/Rural/Urban Development
subject: Consumer/Household Economics
subject: Health Economics and Policy
subject: Labor and Human Capital
subject: Public Economics
subject: Gender
subject: Health
subject: Education
subject: Services

description: Using the nationally representative Gender Productivity Survey (GPS) of 2007/08 conducted by the Uganda Bureau of Statistics (UBoS), the paper examines gender biases in school attainment, returns to education, expenditure on health and education, access to health services. While Uganda has recorded progress on MDG 3: promote gender equality and empower women, the paper reveals that significant gender biases still exist with a regional dimension. These biases are more pronounced in Northern Uganda, which is the poorest region. In other words, interventions in this part of the country should be able to address these biases if the region is to catch up with the rest of the country. These findings further suggest that free education both at primary and secondary level; and abolition of user fees in public health facilities is not sufficient for elimination of gender bias. Policies should be based on a better understanding of the household’s decision making process.
Experimental Quantum Key Distribution with Decoy States
Creators: name: Zhao, Yi
name: Qi, Bing
name: Ma, Xiongfeng
name: Lo, Hoi-Kwong
name: Qian, Li
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: To increase dramatically the distance and the secure key generation rate of quantum key distribution (QKD), the idea of quantum decoys--signals of different intensities--has recently been proposed. Here, we present the first experimental implementation of decoy state QKD. By making simple modifications to a commercial quantum key distribution system, we show that a secure key generation rate of 165bit/s, which is 1/4 of the theoretical limit, can be obtained over 15km of a Telecom fiber. We also show that with the same experimental parameters, not even a single bit of secure key can be extracted with a non-decoy-state protocol. Compared to building single photon sources, decoy state QKD is a much simpler method for increasing the distance and key generation rate of unconditionally secure QKD.
description: Revised Version, 4 pages, one figures, two-column format
Consistent Dyson summation of Higgs propagators in nonlinear parameterizations revisited
Creators: name: Schwinn, Christian
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: As we demonstrate in a process independent way, in a nonlinear parameterization of the scalar sector of the standard model the Dyson summation of the Higgs self energy can be performed without violating the Ward Identities. This implies also the Goldstone boson equivalence theorem, in the limited range of its validity in effective field theories. This proves an earlier conjecture of Valencia and Willenbrock. Furthermore, the full Higgs propagator is independent of the gauge parameters. These results are consistent with the extension of the `gauge flip' formalism for the construction of gauge invariant classes of Feynman diagrams to loop diagrams. In a nonlinear parameterization of a 2-Higgs doublet model, the consistent Dyson summation is possible for all neutral Higgs bosons, but not for the charged scalars. Explicit examples of the equivalence theorem are discussed both in the minimal standard model and a two-Higgs doublet model.
description: 14 pages, LaTeX (feynmf.sty included); references and clarifying remarks added; published version
Quaternion Neural Networks for Multi-channel Distant Speech Recognition
Creators: name: Qiu, Xinchi
name: Parcollet, Titouan
name: Ravanelli, Mirco
name: Lane, Nicholas
name: Morchid, Mohamed
Publisher: name: arXiv
Year: 2020
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Machine Learning (cs.LG)
subject: Sound (cs.SD)
subject: Machine Learning (stat.ML)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Despite the significant progress in automatic speech recognition (ASR), distant ASR remains challenging due to noise and reverberation. A common approach to mitigate this issue consists of equipping the recording devices with multiple microphones that capture the acoustic scene from different perspectives. These multi-channel audio recordings contain specific internal relations between each signal. In this paper, we propose to capture these inter- and intra- structural dependencies with quaternion neural networks, which can jointly process multiple signals as whole quaternion entities. The quaternion algebra replaces the standard dot product with the Hamilton one, thus offering a simple and elegant way to model dependencies between elements. The quaternion layers are then coupled with a recurrent neural network, which can learn long-term dependencies in the time domain. We show that a quaternion long-short term memory neural network (QLSTM), trained on the concatenated multi-channel speech signals, outperforms equivalent real-valued LSTM on two different tasks of multi-channel distant speech recognition.
description: 4 pages
Dual formulations of non-abelian spin models: local representation and low-temperature asymptotics
Creators: name: Borisenko, O.
name: Kushnir, V.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Other Condensed Matter (cond-mat.other)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Non-abelian lattice spin models with symmetry group SU(N) or U(N) can be formulated in terms of link variables which are subject to the Bianchi constraints. Using this representation we derive exact and local dual formulation for the partition function of such models on a cubic lattice in arbitrary dimension D. Locality means that the dual action is given by a sum over some subset of hypercubes of the dual lattice and the interaction between dual variables ranges over one given hypercube. Dual variables are in general discrete-valued and live on (D-2)-cell of the dual lattice, in close analogy with the XY model. We use our construction to study in details the dual of SU(2) principal chiral model in two dimensions. We give dual expressions also for two-point correlation function in arbitrary representation and for the free energy of defects. Leading terms of the asymptotic expansion of the dual Boltzmann factor are computed and it is proven that at low temperatures it converges to a certain Gaussian distribution uniformly in all fluctuations of dual variables. This result enables us to define the semiclassical limit of the dual formulation and to determine an analog of the vortex--spin-wave representation for the partition function. Such representation is used to extract leading perturbative contribution to the correlation function which shows power-like decay at weak coupling. We also present some analytical evidences that the low-temperature limit of the dual formulation is completely described by ISO(2)-like approximation of SU(2) matrix elements.
description: 26 pages, 1 eps figure
Electrical switching and memory phenomena observed in redox-gradient dendrimer sandwich devices
Creators: name: Li, JianChang
name: Blackstock, Silas C.
name: Szulczewski, Greg J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report on the fabrication of dendrimer sandwich devices with electrical switching and memory properties. The storage media is consisted of a redox-gradient dendrimer layer sandwiched in organic barrier thin films. The dendrimer layer acts as potential well where redox-state changes and consequent electrical transitions of the embedded dendrimer molecules are expected to be effectively triggered and retained, respectively. Experimental results indicated that electrical switching could be reproducibly obtained in such dendrimer sandwiches upon a threshold bias voltage. After switching, the device conductivity could be increased more than three orders of magnitude, which can keep stable for several days in ambient conditions. Our work demonstrates the possibility of using solid-state redox-gradient dendrimer films as hopeful information storage media.
description: 13 pages, 5 figures, 1 table, unpublished manuscript
The component masses of the cataclysmic variable V347 Puppis
Creators: name: Thoroughgood, T. D.
name: Dhillon, V. S.
name: Steeghs, D.
name: Watson, C. A.
name: Buckley, D. A. H.
name: Littlefair, S. P.
name: Smith, D. A.
name: Still, M.
name: van der Heyden, K. J.
name: Warner, B.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present time-resolved spectroscopy and photometry of the double-lined eclipsing cataclysmic variable V347 Pup (= LB 1800). There is evidence of irradiation on the inner hemisphere of the secondary star, which we correct for using a model to give a secondary star radial velocity of K_R = 198 \pm 5 km/s. The rotational velocity of the secondary star in V347 Pup is found to be v sin i = 131 \pm 5 km/s and the system inclination is i = 84.0 \pm 2.3 degrees. From these parameters we obtain masses of M_1 = 0.63 \pm 0.04 M_\odot for the white dwarf primary and M_2 = 0.52 \pm 0.06 M_\odot for the M0.5V secondary star, giving a mass ratio of q = 0.83 \pm 0.05. On the basis of the component masses, and the spectral type and radius of the secondary star in V347 Pup, we find tentative evidence for an evolved companion. V347 Pup shows many of the characteristics of the SW Sex stars, exhibiting single-peaked emission lines, high-velocity S-wave components and phase-offsets in the radial velocity curve. We find spiral arms in the accretion disc of V347 Pup and measure the disc radius to be close to the maximum allowed in a pressureless disc.
description: 16 pages, 12 figures, accepted for publication in MNRAS
Additional file 1 of Depression as a concealable stigmatized identity: what influences whether students conceal or reveal their depression in undergraduate research experiences?
Creators: name: Cooper, Katelyn M.
name: Gin, Logan E.
name: Brownell, Sara E.
Publisher: name: figshare
Year: 2020
Subjects: subject: Molecular Biology
subject: Biotechnology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1.
Phonon-assisted electronic states modulation of few-layer PdSe2 at terahertz frequencies
Creators: name: Li, Ziqi
name: Peng, Bo
name: Lin, Miao-Ling
name: Leng, Yu-Chen
name: Zhang, Bin
name: Pang, Chi
name: Tan, Ping-Heng
name: Monserrat, Bartomeu
name: Chen, Feng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Information technology demands high-speed optoelectronic devices, but going beyond the one terahertz (THz) barrier is challenging due to the difficulties associated with generating, detecting, and processing high-frequency signals. Here, we show that femtosecond-laser-driven phonons can be utilized to coherently manipulate the excitonic properties of semiconductors at THz frequencies. The precise control of the pump and subsequent time-delayed broadband probe pulses enables the simultaneous generation and detection processes of both periodic lattice vibrations and their couplings with electronic states. Combining ultralow frequency Raman spectroscopy with first-principles calculations, we identify the unique phonon mode-selective and probe-energy dependent features of electron-phonon interactions in layered PdSe2. Two distinctive types of coherent phonon excitations could couple preferentially to different types of electronic excitations: the intralayer (4.3 THz) mode to carriers and the interlayer (0.35 THz) mode to excitons. This work provides new insights to understand the excited-state phonon interactions of 2D materials, and to achieve future applications of optoelectronic devices operating at THz frequencies.
Overcoming Inefficient Land-Holding of Part-Time and Absent Small Farmers - A Challenge to Nobel Economics Laureate Theodore W. Schultz
Creators: name: Zhou, Jian-Ming
name: Zhou, Jian-Ming
Publisher: name: Unknown
Year: 2002
Subjects: subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: Farm Management
subject: Food Security and Poverty
subject: Institutional and Behavioral Economics
subject: International Development
subject: Labor and Human Capital
subject: Land Economics/Use
subject: Political Economy
subject: Production Economics
subject: Productivity Analysis
subject: part-time and absent small farmers
subject: inefficient land-holding
subject: low and high income economy
subject: economies of scale
subject: obliged lease of unused land to full-time farmers.

description: In order to achieve economies of scale, transfer of the inefficiently held land by the part-time and absent farmers to the full-time farmers is essential. The paper thus proposes - as a third way beyond the centrally planned economy and free market system - the establishment of a law to oblige the lease of unused land to full-time farmers with a minimum lease term of one- (preferably five-) year so as to solve land waste and fragmentation and enlarge full-time farm sizes; improvement of village services to fulltime family farms; transformation of the trade-distorting to non-trade-distorting agricultural subsidies; and promotion of off-farm activities, so as to sustain land use under private land ownership and boost EU enlargement.
description: Paper presented at the International Symposium Sustaining Food Security and Managing Natural Resources in Southeast Asia - Challenges for the 21st Century Organized by University of Hohenheim, Germany Chiang Mai University and Kasetsart University, Thailand International Center for Research in Agroforestry, and International Board for Soil Research and Management 8-11 January 2002 at Chiang Mai University, Thailand
What’s In A Name? Participants’ Pseudonym Choices as a Practice of Empowerment and Epistemic Justice
Creators: name: Pretorius, Lynette
name: Patel, Sweta Vijaykumar
Publisher: name: Monash University
Year: 2024
Subjects: classificationCode: 441006
subject: Sociological methodology and research methods
classificationCode: 390303
subject: Higher education
classificationCode: 440710
subject: Research, science and technology policy
classificationCode: 500107
subject: Professional ethics

description: In qualitative research, using pseudonyms for participants is a common practice. This paper examines how inviting participants to choose their pseudonyms contributes to epistemic justice in the research process. We highlight the transformative potential of participant agency in the research journey by exploring data derived from a large qualitative study of 40 participants from diverse cultural identities who shared their experiences of their doctoral journeys at Western universities (predominantly in Australia). Participants were invited to choose pseudonyms for themselves and their institutions. Employing a narrative inquiry research methodology, data were analysed via a three-stage iterative process, focusing on participants’ pseudonym selection and the contextual explanations provided for their choices. Our findings reveal that when participants choose their pseudonyms, they are able to present their narratives with greater authenticity, capturing the richness of their lived experiences and cultural contexts, thereby advancing epistemic justice. This practice not only created a space of empowerment for participants but also fostered trust and collaboration between researchers and participants. Thus, we argue that recognising and inviting the agency of participants in terms of naming can be considered a critical method, shifting traditional power dynamics in research by recognising participants as experts on their own experiences.This record includes a pre-print of a paper that is published in the International Journal of Research & Method in Education. The final version of record of this paper can be accessed on the journal’s website.
Relative performance of scoring designs for the assessment of constructed responses
Creators: name: Barnett, Sharon Gale
Publisher: name: University of British Columbia
Year: 2009

description: This study used computer simulation to investigate the relative performance of three rater allocation designs and an objective scoring condition at two levels of comparisons: comparison to the examinee true ability, and comparison to the ability estimate obtained under the objective scoring condition. At both comparison levels, score level (theta estimate) differences across theta bins and decisions at four cut-off levels were investigated. At comparison level one, small differences across scoring designs were found in the accuracy of ability estimates obtained using the scoring designs investigated. However, large differences in percentage of accurate pass and fail decisions were found at the first comparison level. This pattern of findings was repeated at comparison level two; comparison to the objective scoring estimates and decisions. The decisions associated with the row allocation design in particular were somewhat erratic when compared to the other scoring methods at both comparison levels making it the least desirable of the rater allocation designs. The random and spiral allocation designs provided similar levels of accuracy in estimating examinee ability and provided similar levels of decision accuracy. These allocation designs showed similar levels of discrepancy and showed similar percentages of agreement with the decisions obtained under the objective scoring condition.
The CO-dark molecular gas mass in 30 Doradus
Creators: name: Chevance, Mélanie
name: Madden, Suzanne C.
name: Fischer, Christian
name: Vacca, William D.
name: Lebouteiller, Vianney
name: Fadda, Dario
name: Galliano, Frédéric
name: Indebetouw, Remy
name: Kruijssen, J. M. Diederik
name: Lee, Min-Young
name: Poglitsch, Albrecht
name: Polles, Fiorella L.
name: Cormier, Diane
name: Hony, Sacha
name: Iserlohe, Christof
name: Krabbe, Alfred
name: Meixner, Margaret
name: Sabbi, Elena
name: Zinnecker, Hans
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Determining the efficiency with which gas is converted into stars in galaxies requires an accurate determination of the total reservoir of molecular gas mass. However, despite being the most abundant molecule in the Universe, H$_2$ is challenging to detect through direct observations and indirect methods have to be used to estimate the total molecular gas reservoir. These are often based on scaling relations from tracers such as CO or dust, and are generally calibrated in the Milky Way. Yet, evidence that these scaling relations are environmentally dependent is growing. In particular, the commonly used CO-to-H$_2$ conversion factor (X$_{\rm CO}$) is expected to be higher in metal-poor and/or strongly UV-irradiated environments. We use new SOFIA/FIFI-LS observations of far-infrared fine structure lines from the ionised and neutral gas and the Meudon photodissociation region model to constrain the physical properties and the structure of the gas in the massive star-forming region of 30 Doradus in the Large Magellanic Cloud, and determine the spatially resolved distribution of the total reservoir of molecular gas in the proximity of the young massive cluster R136. We compare this value with the molecular gas mass inferred from ground-based CO observations and dust-based estimates to quantify the impact of this extreme environment on commonly used tracers of the molecular gas. We find that the strong radiation field combined with the half-solar metallicity of the surrounding gas are responsible for a large reservoir of "CO-dark" molecular gas, leaving a large fraction of the total H$_2$ gas (> 75%) undetected when adopting a standard X$_{\rm CO}$ factor in this massive star-forming region.
description: 14 pages, 7 figures. Accepted for publication in MNRAS (April 16, 2020)
AgEcon Search: Partners Build a Web Resource
Creators: name: Letnes, Louise
name: Kelly, Julia A.
name: Letnes, Louise
name: Kelly, Julia A.
Publisher: name: Unknown
Year: 2002
Subjects: Teaching/Communication/Extension/Profession

description: AgEcon Search: Research in Agricultural and Applied Economics (http://agecon.lib.umn.edu) brings together a variety of literature in agricultural economics in a free web resource. It began as a project to capture fugitive working papers, and has evolved into a major web archive for literature in the field. Many partners are involved in the endeavor, and it serves as a prototype for projects in other disciplines.
description: Originally published in Issues in Science and Technology Librarianship, Spring 2002
The rheology of dense, polydisperse granular fluids under shear
Creators: name: Lutsko, James F.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The solution of the Enskog equation for the one-body velocity distribution of a moderately dense, arbitrary mixture of inelastic hard spheres undergoing planar shear flow is described. A generalization of the Grad moment method, implemented by means of a novel generating function technique, is used so as to avoid any assumptions concerning the size of the shear rate. The result is illustrated by using it to calculate the pressure, normal stresses and shear viscosity of a model polydisperse granular fluid in which grain size, mass and coefficient of restitution varies amoungst the grains. The results are compared to a numerical solution of the Enskog equation as well as molecular dynamics simulations. Most bulk properties are well described by the Enskog theory and it is shown that the generalized moment method is more accurate than the simple (Grad) moment method. However, the description of the distribution of temperatures in the mixture predicted by Enskog theory does not compare well to simulation, even at relatively modest densities.
description: 8 postscript figures Replaced with new version correcting an error in the SME calculations and misc. small corrections. Second replacement with final correction of SME calculations
What’s In A Name? Participants’ Pseudonym Choices as a Practice of Empowerment and Epistemic Justice
Creators: name: Pretorius, Lynette
name: Patel, Sweta Vijaykumar
Publisher: name: Monash University
Year: 2024
Subjects: classificationCode: 441006
subject: Sociological methodology and research methods
classificationCode: 390303
subject: Higher education
classificationCode: 440710
subject: Research, science and technology policy
classificationCode: 500107
subject: Professional ethics

description: In qualitative research, using pseudonyms for participants is a common practice. This paper examines how giving participants the opportunity to choose their pseudonyms contributes to epistemic justice in the research process. We highlight the transformative potential of participant agency in the research journey by exploring data derived from a large qualitative study of 40 participants from diverse cultural identities who shared their experiences of their doctoral journeys at Western universities (predominantly in Australia). Participants were invited to choose pseudonyms for themselves and their institutions. Employing a narrative inquiry research methodology, data were analysed via a three-stage iterative process, focusing on participants’ pseudonym selection and the contextual explanations provided for their choices. Our findings reveal that when participants choose their pseudonyms, they are able to present their narratives with greater authenticity, capturing the richness of their lived experiences and cultural contexts, thereby advancing epistemic justice. This practice not only created a space of empowerment for participants but also fostered trust and collaboration between researchers and participants. Thus, we argue that incorporating self-selected pseudonyms can revolutionise the research process, building stronger and more meaningful connections with participants, thereby fostering a research culture that genuinely values and respects all voices.This record includes the preprint of a paper currently in peer review as well as the supplementary material (semi-structured interview prompts).