cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Neutrino Scattering Physics at Superbeams and Neutrino Factories
Creators: name: Kumano, S.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Neutrino scattering physics is discussed for investigating internal structure of the nucleon and nuclei at future neutrino facilities. We explain structure functions in neutrino scattering. In particular, there are new polarized functions g_3, g_4, and g_5, and they should provide us important information for determining internal nucleon spin structure. Next, nuclear structure functions are discussed. From F_3 structure function measurements, valence-quark shadowing should be clarified. Nuclear effects on the NuTeV sin^2θ_W anomaly are explained. We also comment on low-energy neutrino scattering, which is relevant to current long-baseline neutrino oscillation experiments.
description: 1+8 pages, LaTeX2e, 6 figures. Plenary talk at the 5th International Workshop on Neutrino Factories and Superbeams, Columbia University, New York, USA, June 5-11, 2003. To be published in AIP proceedings. Group web page at http://hs.phys.saga-u.ac.jp
$1/N^2$ correction to free energy in hermitian two-matrix model
Creators: name: Eynard, B.
name: Kokotov, A.
name: Korotkin, D.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: Using the loop equations we find an explicit expression for genus 1 correction in hermitian two-matrix model in terms of holomorphic objects associated to spectral curve arising in large N limit. Our result generalises known expression for $F^1$ in hermitian one-matrix model. We discuss the relationship between $F^1$, Bergmann tau-function on Hurwitz spaces, G-function of Frobenius manifolds and determinant of Laplacian over spectral curve.
Role of the low-lying nucleon resonances in the $p\bar{p} \to ψη$ reaction
Creators: name: Zhou, Qin-Song
name: Wang, Jun-Zhang
name: Xie, Ju-Jun
name: Liu, Xiang
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Within the effective Lagrangian approach, we study the $p\bar{p} \rightarrow ψη$ [$ψ\equivψ(3686)$, $J/ψ$] reaction at the low energy where the contributions from nucleon pole and low-lying nucleon resonances, $N(1520)$, $N(1535)$ and $N(1650)$ are considered. All the model parameters are determined with the help of current experimental data on the decay of $ψ\to p \bar{p} η$. Within the model parameters, the total and differential cross sections of the $p\bar{p} \rightarrow ψη$ reaction are predicted. We show that the relative phases between different amplitudes of different nucleon resonance will change significantly the angular distributions of the $\bar{p} p \to ψη$ reaction. Therefore, we conclude that these reactions are suitable to study experimentally the properties of the low-lying nucleon resonance and the reaction mechanisms. We hope that these theoretical calculations can be tested by future experiments.
description: 8 pages, 9 figures and 3 tables. Accepted by Phys. Rev. D
Charge and Current in the Quantum Hall Matrix Model
Creators: name: Hansson, T. H.
name: Kailasvuori, J.
name: Karlhede, A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We extend the quantum Hall matrix model to include couplings to external electric and magnetic fields. The associated current suffers from matrix ordering ambiguities even at the classical level. We calculate the linear response at low momenta -- this is unambigously defined. In particular, we obtain the correct fractional quantum Hall conductivity, and the expected density modulations in response to a weak and slowly varying magnetic field. These results show that the classical quantum Hall matrix models describe important aspects of the dynamics of electrons in the lowest Landau level. In the quantum theory the ordering ambiguities are more severe; we discuss possible strategies, but we have not been able to construct a good density operator, satisfying the pertinent lowest Landau level commutator algebra.
description: 12 pages, no figures; a logical error below the proposed density operator (46) in version 1 is corrected, and the claim that this density operator satisfy the magnetic algebra (2) is withdrawn. Some formulations have been changed and a few misprints corrected
Comparaison de méthodes d’activation thermique de gypse recyclé
Creators: name: Gaudrel, Damien
Publisher: name: Academic Journal of Civil Engineering
Year: 2020

description: Le recyclage et la valorisation des déchets du BTP constituent aujourd’hui des enjeux environnementaux majeurs. Le gypse, très largement utilisé dans le bâtiment, génère environ 400 000 tonnes de déchets par an en France. L’activation thermique du gypse naturel ou de synthèse est bien connue et maîtrisée, notamment pour la production de plâtre ou d’anhydrite. Cette étude s’intéresse à la comparaison de deux méthodes d’activation thermique - la calcination flash et l’étuvage ventilé – afin de valoriser un gypse provenant d’une installation de recyclage. Des analyses ATG et DRX ont été réalisées sur le gypse recyclé ainsi que sur les produits déshydratés par ces deux méthodes de calcination. Ces derniers ont été formulés afin d’atteindre des propriétés courantes de mises en œuvre, puis caractérisés mécaniquement. Les résultats montrent des réactivités différentes selon la calcination utilisée, impliquant une différence sensible des propriétés mécaniques des liants résultants.
description: Academic Journal of Civil Engineering, Vol 38 No 1 (2020): Special Issue - RUGC 2020 Marrakech
Cattle and beef marketing in Delta State, Nigeria
Creators: name: Waziri-Ugwu, P.R.
name: Chidebelu, S.A.N.D.
name: Waziri-Ugwu, P.R.
name: Chidebelu, S.A.N.D.
Publisher: name: Unknown
Year: 2017
Subjects: subject: Demand and Price Analysis
subject: Farm Management
subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: Marketing
subject: Cattle and beef
subject: Margins
subject: Delta State, Nigeria

description: This study examined cattle and beef marketing in Delta State, Nigeria. The specific objectives were to identify and describe distribution channels for beef; ascertain the factors that determine selling price at the wholesale and retail level of cattle and beef; and determine the marketing margins for cattle and beef at both wholesale and retail levels. A total of 180 respondents (60 wholesalers and 120 retailers) were selected from the three agricultural zones in the state which are divided into local government areas. Data were collected from the respondents by using two sets of structured questionnaire. Marketing channels, regression analysis and marketing margin analysis were used to analyse the data collected. The mean price per cattle was N130,000.00 ±27098.82 while a kilogram of beef cost N750.00 on the average. The wholesale margins for cattle was N22,850.00 while the margins for beef retailers was N236,156.00 weekly. The regression results showed that transport cost (p<0.10), market charges (p<0.10) and cost of renting land (p<0.10) and buying price (p<0.05) significantly affected cattle wholesale price. The regression results showed that sales price (p<0.05) and transportation cost (p<0.05), while tax rate (p<0.10), cost of loading (p<0.10) and cost of offloading of cattle (p<0.10) significantly affected the retail prices. The study showed that cattle marketing in Delta State is lucrative and the government is encouraged to invest in its production to help in national development in the future.
Comportement thermique d’été d’un bâtiment rénové en béton de chanvre
Creators: name: Boumediene, Naima
name: Collet, Florence
name: Prétot, Sylvie
name: Lanos, Christophe
name: Dubois, Florent
Publisher: name: Academic Journal of Civil Engineering
Year: 2020

description: Cet article constitue une étude préliminaire du comportement hygrothermique d’un bâtiment à colombage rénové en béton de chanvre. Il est instrumenté au niveau des ambiances (intérieure et extérieure) ainsi qu’au sein de différentes parois. L’étude porte sur le mois d’août 2019. La mesure de température extérieure est en accord avec le relevé météo France et montre un mois chaud, proche des records sur la période 1980-2010. La confrontation de la température intérieure à la température extérieure montre un bon niveau de confort thermique. L’étude du comportement au sein de la partie courante en béton de chanvre de la paroi sud souligne la contribution des parois au comportement thermique du bâtiment.
description: Academic Journal of Civil Engineering, Vol 38 No 1 (2020): Special Issue - RUGC 2020 Marrakech
Stellar evolution with rotation and magnetic fields II: General equations for the transport by Tayler--Spruit dynamo
Creators: name: Maeder, Andre
name: Meynet, Georges
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We further develop the Tayler--Spruit dynamo theory, based on the most efficient instability for generating magnetic fields in radiative layers of differentially rotating stars. We avoid the simplifying assumptions that either the $μ$-- or the $T$--gradient dominates, but we treat the general case and we also account for the nonadiabatic effects, which favour the growth of the magnetic field. Stars with a magnetic field rotate almost as a solid body. Several of their properties (size of the core, MS lifetimes, tracks, abundances) are closer to those of models without rotation than with rotation only. In particular, the observed N/C or N/H excesses in OB stars are better explained by our previous models with rotation only than by the present models with magnetic fields that predict no nitrogen excesses. We show that there is a complex feedback loop between the magnetic instability and the thermal instability driving meridional circulation. This opens the possibility for further magnetic models, but at this stage we do not know the relative importance of the magnetic fields due to the Tayler instability in stellar interiors.
description: 14 pages, 11 figures, accepted for publication in Astronomy and Astrophysics
High-finesse optical quantum gates for electron spins in artificial molecules
Creators: name: Troiani, F.
name: Hohenester, U.
name: Molinari, E.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A doped semiconductor double-quantum-dot molecule is proposed as a qubit realization. The quantum information is encoded in the electron spin, thus benefiting from the long relevant decoherence times; the enhanced flexibility of the molecular structure allows to map the spin degrees of freedom onto the orbital ones and vice versa, and opens the possibility for high-finesse (conditional and unconditional) quantum gates by means of stimulated Raman adiabatic passage.
description: To appear in Phys. Rev. Lett
Co-integration relationships among major gum arabic markets in Kano State, Nigeria
Creators: name: Yaro, A.M.
name: Musa, S.A.
name: Yaro, A.M.
name: Musa, S.A.
Publisher: name: Unknown
Year: 2017
Subjects: subject: Crop Production/Industries
subject: Demand and Price Analysis
subject: Marketing
subject: FOS: Economics and business
subject: Cointegration
subject: Gum Arabic
subject: Markets
subject: Kano State, Nigeria

description: The study examined price co-movements of various grades of gum arabic in the major gum arabic markets in Kano State. Purposive sampling technique was employed to select five major markets in five local government areas and price time series data were collected weekly for fifty-two weeks from the various markets under study. The price information of the different grades of gum arabic were decomposed and subsequently subjected to cointegration procedure. The results revealed various levels and directions of price co-movements among the markets. The study concludes that gum arabic prices varied and co-moved between market pairs at different periods of the year. The study recommended that since most of the markets were co-integrated, establishment of a central market in the study area will further improve better pricing mechanism, collective bargaining and control. Buffer stock storage facilities could be provided by cooperative association in collaboration with the government and private sector.
Analytical Solution for pavement behaviour with the partial bond
Creators: name: NGUYEN, QUANG HUY Huy
Publisher: name: Academic Journal of Civil Engineering
Year: 2020

description: The interface bond between layers plays an important role in the behaviour of pavement structure. However, this aspect has not yet been adequately considered in the pavement analysis process due to the lack of advanced characterizations of actual condition. In many pavement design procedures, only completely bonded or unbounded interface between the layers is considered. For the purpose of better evaluation of the asphalt pavement behaviour, the present work focused on its investigation taking into account the actual interface bonding condition between the asphalt layers. The interaction between pavement layers was taken into account by introducing a horizontal shear reaction modulus which represents the interface bonding condition for a given state. The analytical solution was then implemented in a numerical program before doing forward calculations for sensitivity analysis which highlights the influence of the interface bonding conditions on the structural behaviour of asphalt pavement under a static loading.
description: Academic Journal of Civil Engineering, Vol 38 No 1 (2020): Special Issue - RUGC 2020 Marrakech
Generalized hydrodynamics revisited
Creators: name: Dufty, James
name: Luo, Kai
name: Wrighton, Jeffrey
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: During the past decade a number of attempts to formulate a continuum description of complex states of matter have been proposed to circumvent more cumbersome many-body and simulation methods. Typically these have been quantum systems (e.g., electrons) and the resulting phenomenologies collectively often called "quantum hydrodynamics". However, there is extensive work from the past based in non-equilibrium statistical mechanics on the microscopic origins of macroscopic continuum dynamics that has not been exploited in this context. Although formally exact, its original target was the derivation of Navier-Stokes hydrodynamics for slowly varying states in space and time. The objective here is to revisit that work for the present interest in complex quantum states - possible strong degeneracy, strong coupling, and all space-time scales. The result is an exact representation of generalized hydrodynamics suitable for introducing controlled approximations for diverse specific cases, and for critiquing existing work.
description: Supplemental material is also included
Multivariate distribution of returns in financial time series
Creators: name: Alessio, E.
name: Frappietro, V.
name: Krivoruchenko, M. I.
name: Streckert, L. J.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: Multivariate probability density functions of returns are constructed in order to model the empirical behavior of returns in a financial time series. They describe the well-established deviations from the Gaussian random walk, such as an approximate scaling and heavy tails of the return distributions, long-ranged volatility-volatility correlations (volatility clustering) and return-volatility correlations (leverage effect). Free parameters of the model are fixed over the long term by fitting 100+ years of daily prices of the Dow Jones 30 Industrial Average. The multivariate probability density functions which we have constructed can be used for pricing derivative securities and risk management.
description: Talk given by M. I. Krivoruchenko at the International Conference of Computational Methods in Sciences and Engineering 2003 (ICCMSE 2003), Kastoria, Greece, 12-16 September 2003; 16 pages, 4 Postscript figures, REVTeX. Extended abstract appeared in: Proceedings of the International Conference of Computational Methods in Sciences and Engineering 2003 (ICCMSE 2003), Ed. T.E. Simos (World Scientific Publishing Co., Singapore, 2003), pp. 323-326
title: Driving Mechanisms for Cataclysmic Variable Evolution.
Creators: name: Barker, John
Publisher: name: The Open University
Year: 2003

description: Cataclysmic variables are interacting binary systems in which the evolution of the system is driven by the loss of orbital angular momentum. In this thesis I investigate possible angular momentum loss mechanisms and try to reconcile the differences between the observed and theoretically predicted minimum period and the orbital period distribution for systems with orbital periods below the period gap. Specifically I use a general consequential angular momentum loss mechanism (CAML) which depends linearly upon the mass transfer rate in the system, and a deformation mechanism which bloats the donor star. Numerical models to include the effects of circumbinary discs and irradiation driven winds from the donor star on the evolution of CVs were developed, the circumbinary disc model is able to raise the minimum period to the observed value. Systems subject to irradiation driven winds and high CAML efficiencies exhibit mass transfer cycles; these could explain the range of mass transfer rates observed in CVs with similar orbital periods. I also consider the possibility that the observed minimum period is purely an age effect.
 I model possible parent distributions by using an additional intrinsic angular momentum loss to set the minimum period to the observed value, with different spectra of donor star masses, white dwarf masses, efficiencies for the CAML and bloating mechanisms. A statistical test was developed and used to calculate a probability that the observed distribution is drawn from the modelled parent distribution. None of the calculated distributions gives a better fit than that for a flat distribution. This is suggestive of some additional evolutionary mechanism or selection effect.
 I also investigate the apparent difference between the distributions of magnetic and non-magnetic CVs over the period range (1.3 ≤ P/hr ≤ 15), concluding that it is likely that these systems evolve via different mechanisms for orbital periods above the lower edge of the period gap.
On the Sample Complexity of Data-Driven Inference of the $\mathcal{L}_2$-gain
Creators: name: Sharf, Miel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: Lately, data-driven control has become a widespread area of research. A few recent big-data based approaches for data-driven control of nonlinear systems try to use classical input-output techniques to design controllers for systems for which only a finite number of (input-output) samples are known. These methods focus on using the given data to compute bounds on the $\mathcal{L}_2$-gain or on the shortage of passivity from finite input-output data, allowing for the application of the small gain theorem or the feedback theorem for passive systems. One question regarding these methods asks about their sample complexity, namely how many input-output samples are needed to get an approximation of the operator norm or of the shortage of passivity. We show that the number of samples needed to estimate the operator norm of a system is roughly the same as the number of samples required to approximate the system in the operator norm.
description: 6 pages, 1 figure
The Morphological Demographics of galaxies in the ACS Hubble Ultra Deep Parallel Fields
Creators: name: Menanteau, Felipe
name: Ford, Holland C.
name: Motta, Veronica
name: Benitez, Narciso
name: Martel, Andre R.
name: Blakeslee, John P.
name: Infante, Leopoldo
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a morphological analysis of distant field galaxies using the deep ACS images from the public parallel NICMOS observations of the Hubble Ultra Deep Field obtained in the F435W (B), F606W (V), F775W (i) and F850LP (z) filters. We morphologically segregate galaxies using a combination of visual classification and objective machine based selection. We use the Asymmetry (A) and Central Concentration (C) parameters to characterize galaxies up to z_AB<25mag. We take advantage of the multicolor dataset and estimate redshifts for our sample using the Bayesian photometric redshift (BPZ) which enables us to investigate the evolution of their morphological demographics with redshift. Using a template fitting model and a maximum likelihood approach, we compute the star-formation rate (SFR) for galaxies up to z~1.3 and its contributions from different morphological types. We report that spirals are the main providers to the total SFR. The E/S0s contribution flattens out at z~1 while the Irr/Pec populations continuously rise to match the spirals contribution at z~1.0. We use the i-z and V-i color-magnitude diagrams to constrain the galaxies' formation histories and find that E/S0s show both a population of luminous red galaxies in place at z~1.2 and a bluer and fainter population resembling those of Irr/Pec at similar redshifts.
description: 7 pages, 6 figures. Accepted for publication in the Astronomical Journal. Full resolution paper at: http://acs.pha.jhu.edu/~felipe/e-prints/
Agricultural Imports of the European Common Market
Creators: name: Oweis, Jiryis S.
name: Angelidis, Alex D.
name: Oweis, Jiryis S.
name: Angelidis, Alex D.
Publisher: name: Unknown
Year: 1963
Subjects: Agricultural and Food Policy
International Relations/Trade

description: Reprinted from Foreign Agricultural Trade of the United States April 1963
Three Principles of Competitive Nonlinear Pricing
Creators: name: Page, Frank H.
name: Monteiro, Paulo K.
name: Page, Frank H.
name: Monteiro, Paulo K.
Publisher: name: Unknown
Year: 2002
Subjects: subject: Agricultural and Food Policy
subject: Demand and Price Analysis
subject: Financial Economics
subject: competitive nonlinear pricing
subject: delegation principle
subject: implementation principle
subject: competitive taxation principle
subject: Nash equilibria for discontinuous games

description: We make three contributions to the theory of contracting under asymmetric information. First, we establish a competitive analog to the revelation principle which we call the implementation principle. This principle provides a complete characterization of all incentive compatible, indirect contracting mechanisms in terms of contract catalogs (or menus), and allows us to conclude that in competitive contracting situations, …rms in choosing their contracting strategies can restrict attention, without loss of generality, to contract catalogs. Second, we establish a competitive taxation principle. This principle, a re…nement of the implementation principle, provides a complete characterization of all implementable nonlinear pricing schedules in terms of product-price catalogs and allows us to reduce any game played over nonlinear pricing schedules to a strategically equivalent game played over product-price catalogs. Third, applying the notion of payo¤ security (Reny (1999)) and the competitive taxation principle, we demonstrate the existence of a Nash equilibrium for the mixed extension of the nonlinear pricing game. Moreover, we identify a large class of competitive nonlinear pricing games whose mixed extensions satisfy payo¤ security. This paper extends earlier work by the first author (see Page (1992, 1999)).
An Investigation Into Sustainable Water Consumption - Water Bottles versus WaterFillz Units
Creators: name: Tavassoli, Alireza
name: Wong, Yee Chung
name: Sahami, Sina
name: Baillie, Kevin
Publisher: name: The University of British Columbia
Year: 2011

description: Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Scaling violations of quark and gluon jet fragmentation functions in e+e- annihilations at sqrt(s) = 91.2 and 183-209 GeV
Creators: name: The OPAL Collaboration
name: Abbiendi, G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Flavour inclusive, udsc and b fragmentation functions in unbiased jets, and flavour inclusive, udsc, b and gluon fragmentation functions in biased jets are measured in e+e- annihilations from data collected at centre-of-mass energies of 91.2, and 183-209 GeV with the OPAL detector at LEP. The unbiased jets are defined by hemispheres of inclusive hadronic events, while the biased jet measurements are based on three-jet events selected with jet algorithms. Several methods are employed to extract the fragmentation functions over a wide range of scales. Possible biases are studied in the results are obtained. The fragmentation functions are compared to results from lower energy e+e- experiments and with earlier LEP measurements and are found to be consistent. Scaling violations are observed and are found to be stronger for the fragmentation functions of gluon jets than for those of quarks. The measured fragmentation functions are compared to three recent theoretical next-to-leading order calculations and to the predictions of three Monte Carlo event generators. While the Monte Carlo models are in good agreement with the data, the theoretical predictions fail to describe the full set of results, in particular the b and gluon jet measurements.
description: 46 pages, 17 figures, Submitted to Eur. Phys J. C
Additional file 3 of Assessing patient safety in a pediatric telemedicine setting: a multi-methods study
Creators: name: Haimi, Motti
name: Shuli Brammli-Greenberg
name: Baron-Epel, Orna
name: Waisman, Yehezkel
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 3: Supplemental Table 3. Medical factors and Secondary Decisions.
A First Principles Density-Functional Calculation of the Electronic and Vibrational Structure of the Key Melanin Monomers
Creators: name: Powell, B. J.
name: Baruah, T.
name: Bernstein, N.
name: Brake, K.
name: McKenzie, Ross H.
name: Meredith, P.
name: Pederson, M. R.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Biomolecules (q-bio.BM)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: We report first principles density functional calculations for hydroquinone (HQ), indolequinone (IQ) and semiquinone (SQ). These molecules are believed to be the basic building blocks of the eumelanins, a class of bio-macromolecules with important biological functions (including photoprotection) and with potential for certain bioengineering applications. We have used the DeltaSCF (difference of self consistent fields) method to study the energy gap between the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO), Delta_HL. We show that Delta_HL is similar in IQ and SQ but approximately twice as large in HQ. This may have important implications for our understanding of the observed broad band optical absorption of the eumelanins. The possibility of using this difference in Delta_HL to molecularly engineer the electronic properties of eumelanins is discussed. We calculate the infrared and Raman spectra of the three redox forms from first principles. Each of the molecules have significantly different infrared and Raman signatures, and so these spectra could be used in situ to non-destructively identify the monomeric content of macromolecules. It is hoped that this may be a helpful analytical tool in determining the structure of eumelanin macromolecules and hence in helping to determine the structure-property-function relationships that control the behaviour of the eumelanins.
description: 10 pages, 7 figures
BatchEnsemble: An Alternative Approach to Efficient Ensemble and Lifelong Learning
Creators: name: Wen, Yeming
name: Tran, Dustin
name: Ba, Jimmy
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Ensembles, where multiple neural networks are trained individually and their predictions are averaged, have been shown to be widely successful for improving both the accuracy and predictive uncertainty of single neural networks. However, an ensemble's cost for both training and testing increases linearly with the number of networks, which quickly becomes untenable. In this paper, we propose BatchEnsemble, an ensemble method whose computational and memory costs are significantly lower than typical ensembles. BatchEnsemble achieves this by defining each weight matrix to be the Hadamard product of a shared weight among all ensemble members and a rank-one matrix per member. Unlike ensembles, BatchEnsemble is not only parallelizable across devices, where one device trains one member, but also parallelizable within a device, where multiple ensemble members are updated simultaneously for a given mini-batch. Across CIFAR-10, CIFAR-100, WMT14 EN-DE/EN-FR translation, and out-of-distribution tasks, BatchEnsemble yields competitive accuracy and uncertainties as typical ensembles; the speedup at test time is 3X and memory reduction is 3X at an ensemble of size 4. We also apply BatchEnsemble to lifelong learning, where on Split-CIFAR-100, BatchEnsemble yields comparable performance to progressive neural networks while having a much lower computational and memory costs. We further show that BatchEnsemble can easily scale up to lifelong learning on Split-ImageNet which involves 100 sequential learning tasks.
Etude de Comportement Mécanique des Interfaces dans les Blocs de Terre Stabilisés et Fibrés
Creators: name: FOUCHAL, FAZIA
Publisher: name: Academic Journal of Civil Engineering
Year: 2020

description: Cet article présente les résultats d'une étude expérimentale sur le comportement d’interface entre les fibres végétales du palmier dattier et les blocs de terre stabilisée (SEB). Le SEB a été stabilisé avec du ciment blanc, de la chaux et du mélange ciment-chaux blanc. Pour évaluer le comportement de l'interface et l'adhésion entre la fibre et la matrice, des tests d'arrachement ont été effectués sur une seule fibre de palmier ancrée dans différentes variantes de SEB. Il a été constaté que les meilleurs en terme de résistance à la force d'arrachement ont été observés par la fibre de palmier traitée par autoclave avec une matrice de terre stabilisée par du ciment blanc. Cependant, l'humidité a un effet négatif sur le comportement de l'interface de la matrice de fibres.
description: Academic Journal of Civil Engineering, Vol 38 No 1 (2020): Special Issue - RUGC 2020 Marrakech
High-luminosity Large Hadron Collider with laser-cooled isoscalar ion beams
Creators: name: Krasny, Mieczyslaw Witold
name: Petrenko, Alexey
name: Placzek, Wieslaw
Publisher: name: arXiv
Year: 2020
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: This paper presents one of the case studies of the Gamma Factory initiative -- a proposal of a new operation scheme of ion beams in the CERN accelerator complex. Its goal is to extend the scope and precision of the LHC-based research by complementing the proton-proton collision programme with the high-luminosity nucleus-nucleus one. Its numerous physics highlights include studies of the exclusive Higgs-boson production in photon-photon collisions and precision measurements of the electroweak (EW) parameters. There are two principal ways to increase the LHC luminosity which do not require an upgrade of the CERN injectors: (1) modification of the beam-collision optics and (2) reduction of the transverse emittance of the colliding beams. The former scheme is employed by the ongoing high-luminosity (HL-LHC) project. The latter one, applicable only to ion beams, is proposed in this paper. It is based on laser cooling of bunches of partially stripped ions at the SPS flat-top energy. For isoscalar calcium beams, which fulfil the present beam-operation constrains and which are particularly attractive for the EW physics, the transverse beam emittance can be reduced by a factor of $5$ within the $8$ seconds long cooling phase. The predicted nucleon-nucleon luminosity of $L_{NN}= 4.2 \times 10^{34}\,$s$^{-1}$cm$^{-2}$ for collisions of the cooled calcium beams at the LHC top energy is comparable to the levelled luminosity for the HL-LHC proton-proton collisions, but with reduced pile-up background. The scheme proposed in this paper, if confirmed by the future Gamma Factory proof-of-principle experiment, could be implemented at CERN with minor infrastructure investments.
description: 57 pages, 15 figures
Perspectives de valorisation de matériaux excavés riches en sulfates en granulats à béton pour le futur tunnel ferroviaire de base Lyon-Turin
Creators: name: DIVET, Loïc
name: Lavaud, Stéphane
name: Saillio, Mickaël
name: Hugot, Elsa
name: Burdin, Jacques
Publisher: name: Academic Journal of Civil Engineering
Year: 2020

description: La gestion économe et durable des ressources naturelles est un des enjeux de la construction du tunnel de base du Mont-Cenis, principal ouvrage de la nouvelle liaison ferroviaire Lyon-Turin. Le creusement de ce tunnel génèrera plus de 37 millions de tonnes de matériaux excavés, dont 28% sont destinés à être utilisés en granulats à béton. L’utilisation des ressources locales vise notamment à diminuer l’impact environnemental en limitant l’extraction et le transport de granulats issus des carrières. Par ailleurs, il s’agit de limiter au mieux la mise en dépôts des matériaux excavés. Les sondages géologiques ont mis en évidence la présence d’anhydrites sur certains secteurs du projet. Les sulfates, autres que ceux apportés par le ciment, sont à proscrire dans le béton car ils peuvent être à l’origine de désordres par formation de produits expansifs. Les travaux de recherche ont permis de développer un béton contenant ces matériaux excavés et présentant une bonne durabilité dans les conditions de fonctionnement du tunnel
description: Academic Journal of Civil Engineering, Vol 38 No 1 (2020): Special Issue - RUGC 2020 Marrakech
Weyl points and topological surface states in a three-dimensional elastic lattice
Creators: name: Ganti, Sai Sanjit
name: Liu, Ting-Wei
name: Semperlotti, Fabio
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Following the realization of Weyl semimetals in quantum electronic materials, classical wave analogues of Weyl materials have also been theorized and experimentally demonstrated in photonics and acoustics. Weyl points in elastic systems, however, have been a much more recent discovery. In this study, we report on the design of an elastic fully-continuum three-dimensional material that, while offering structural and load-bearing functionalities, is also capable of Weyl degeneracies and surface topologically-protected modes in a way completely analogous to the quantum mechanical counterpart. The topological characteristics of the lattice are obtained by \textit{ab initio} numerical calculations without employing any further simplifications. The results clearly characterize the topological structure of the Weyl points and are in full agreement with the expectations of surface topological modes. Finally, full field numerical simulations are used to confirm the existence of surface states and to illustrate their extreme robustness towards lattice disorder and defects.
Could electron-positron annihilation lines in the Galactic center result from pulsar winds?
Creators: name: Wang, W.
name: Pun, C. S. J.
name: Cheng, K. S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: we study the possibility of pulsar winds in the Galactic center (GC) to produce the 511 keV line. We propose that there may exist three possible scenarios of pulsar winds as the positron sources: normal pulsars; rapidly spinning strongly magnetized neutron stars in GRB progenitors; a population of millisecond pulsars in the Galactic center region. These $e^\pm$pairs could be trapped in the region by the magnetic field in the GC, and cool through the synchrotron radiation and Coulomb interactions with the medium. The cooling timescales are lower than the diffuse timescale of positrons, so low energy positrons could annihilate directly with electrons into 511 keV photons or form positronium before annihilation. We find that normal pulsars cannot be a significant contributor to the positron sources. Although magnetars in the GC could be potential sources of positrons, their birth rate and birth locations may impose some problems for this scenario. We believe that the most likely candidate positron sources in the GC may be a population of millisecond pulsars in the GC. Our preliminary estimations predict the e$^\pm$ annihilation rate in the GC is $> 5\times 10^{42}$ s$^{-1}$. Therefore, the $e^\pm$ pairs from pulsars winds can contribute significantly to the positron sources in the GC. Furthermore, since the diffusion length of positrons is short, we predict that the intensity distribution of the annihilation line should follow the distribution of millisecond pulsars, which should correlate to the mass distribution in the GC.
description: 7 pages, A&A in press
Cinétique locale de sorption : Modélisation d’une paroi biosourcée
Creators: name: Reuge, Nicolas
name: Collet, Florence
name: Pretot, Sylvie
name: Moissette, Sophie
name: Bart, Marjorie
name: Lanos, Christophe
Publisher: name: Academic Journal of Civil Engineering
Year: 2020

description: Dans la description des transferts hygrothermiques au sein des matériaux de construction biosourcés, l’approche classique considère localement un équilibre instantané entre humidité relative et teneur en eau. L’approche présentée ici considère au contraire une cinétique locale de sorption ralentissant les échanges entre vapeur d’eau et eau liquide. Le modèle est initialement basé sur des mesures de sorption d’échantillons représentatifs de matériaux biosourcés et son expression est améliorée par rapport aux travaux précédents. Une constante cinétique est déterminée pour chacun des matériaux ISOBIO étudiés. Ensuite, les simulations issues des différentes approches (i.e. équilibre instantané liquide / vapeur et ancienne / nouvelle expression du modèle cinétique) sont comparées aux mesures effectuées au sein de la paroi ISOBIO installée sur un démonstrateur (HIVE, Wroughton, UK).
description: Academic Journal of Civil Engineering, Vol 38 No 1 (2020): Special Issue - RUGC 2020 Marrakech
Hairy rotating black string in the Einstein-Maxwell-Higgs system
Creators: name: Dehghani, M. H.
name: Khodam-Mohammadi, A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show numerically that the Abelian Higgs field equations in the background of a four-dimensional rotating charged black string have vortex solutions. These solutions which have axial symmetry show that the rotating black string can support the Abelian Higgs field as hair. We find that one encounters with an electric field coupled to the Higgs scalar field for the case of rotating black string. This electric field is due to an electric charge per unit length, which increases as the rotation parameter becomes larger. We also find that the vortex thickness decreases as the rotation parameter grows up. Finally we consider the self-gravity of the Abelian Higgs field and show that the effect of the vortex is to induce a deficit angle in the metric under consideration which decreases as the rotation parameter increases.
description: 16 pages, 8 figures, references added, some minor corrections done
Modèle de connaissance orienté Graphe pour représenter, simuler, capitaliser et analyser les défaillances de barrage
Creators: name: BAUDRIT, CEDRIC
name: Taillandier, Franck
name: Breysse, Denis
Publisher: name: Academic Journal of Civil Engineering
Year: 2020

description: Malgré le développement de nombreux outils et de base de données, les barrages sont encore aujourd’hui confrontés à des défaillances pouvant mener à des situations dramatiques. Il n’existe pas à ce jour de modèle générique et holistique capable de modéliser tout type de barrage et de capitaliser leurs défaillances. Cet article propose les prémices d’un modèle de connaissance, basé sur le formalisme des graphes conceptuels, capable de représenter et de capitaliser les défaillances de tout type de barrage via un vocabulaire commun structuré et (2) de mener des raisonnements automatiques. Le but est de pouvoir émettre des explications de défaillance et des recommandations sur des ouvrages en exploitation ou en projet en s’appuyant sur les défaillances passées.
description: Academic Journal of Civil Engineering, Vol 38 No 1 (2020): Special Issue - RUGC 2020 Marrakech
MARKET STRUCTURE AND ENTRY: WHERE’S THE BEEF?
Creators: name: Toivanen, Otto
name: Waterson, Michael
name: Toivanen, Otto
name: Waterson, Michael
Publisher: name: Unknown
Year: 2001
Subjects: subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: duopoly
subject: entry
subject: fast food
subject: learning

description: We study the effects of market structure on entry using data from the UK fast food (counter-service burger) industry over the years 1991-1995. Over this period, the market can be characterized as a duopoly. We find that market structure matters greatly: for both firms, rival presence increases the probability of entry. We control for market specific time-invariant unobservables and their correlation with existing outlets of both firms through a variety of methods. Such unobservables generally play a minor role. For both firms, variable profits per customer are increasing in the number of own outlets, and decreasing in the number of rival outlets. Structural form estimations show that the positive effect of rival presence on the probability of entry is due to firm learning: rival presence increases the estimate of the size of the market. The firms are differently affected by demand variables and have different fixed costs of entry. These results strongly suggest the presence of product differentiation, firm learning and market power.
Développement d’un modèle sous TRNSYS de l’impact énergétique de murs végétalisés sur une maison ancienne en période hivernale
Creators: name: Mohamed-Amine, Kenai
name: Libessart, Laurent
name: Stéphane, Lassue
name: Didier, Defer
Publisher: name: Academic Journal of Civil Engineering
Year: 2020

description: Cette étude s’intéresse à l’évaluation de l’influence des murs végétalisés extensifs (MV) sur le bilan énergétique des bâtiments avec un code global de simulation thermique dynamique de bâtiment (TRNSYS). A cet effet, le « Type » développé a été utilisé pour apporter une nouvelle contribution à la prédiction du comportement thermique des murs végétalisés. La première partie présente la description du logiciel de simulation thermique dynamique utilisé et des modalités d’intégration du modèle développé. Puis, la modélisation de l’influence des MV à une échelle plus globale est détaillée. Elle mettra en avant l’influence thermique des MV en période hivernale sur une maison située à Lille. Il s’agira donc d’une application à un cas d’étude représentatif d’un bâtiment d’habitation existant en milieu urbain.
description: Academic Journal of Civil Engineering, Vol 38 No 1 (2020): Special Issue - RUGC 2020 Marrakech
Xylocopa Latreille
Creators: name: RAMOS, KELLI S.
name: KAWADA, RICARDO
name: BRANDÃO, CARLOS ROBERTO F.
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Apidae
Xylocopa

description: Xylocopa Latreille
  Xylocopa bambusae Schrottky, 1902a: 475  (http://hol.osu.edu/spmInfo.html?id=MZSP%20000031) Holotype: ♂ ‘17.757 [Brazil, Rio Grande do Sul, H. Ihering col.]’ ‘Tipo’ ‘ Holotype, Xylocopa bambusae Schrottky, 1902 ’. Current status: Xylocopa (Xylocospila) bambusae Schrottky, 1902.
  Xylocopa chrysopoda Schrottky, 1902a: 475  (http://hol.osu.edu/spmInfo.html?id=MZSP%20000032) Holotype: ♂ ‘17.759 [Brazil, São Paulo, Jundiaí, 1900, O. Dreher col.]’ ‘Tipo’ ‘ Holotype, Xylocopa chrysopoda Schrottky, 1902 ’. Current status: Xylocopa (Ioxylocopa) chrysopoda Schrottky, 1902.
  Xylocopa crotalariae Schrottky, 1902a: 472  (http://hol.osu.edu/spmInfo.html?id=MZSP%20000033) Holotype: ♀ ‘1.296 [Brazil, São Paulo, Jundiaí, M. Beron col.]’ ‘ Holotype, Xylocopa crotalariae Schrottky, 1902 ’. Current status: Xylocopa (Schonnherria) macrops Lepeletier, 1841.
description: Published as part of RAMOS, KELLI S., KAWADA, RICARDO & BRANDÃO, CARLOS ROBERTO F., 2015, Type specimens of bees (Hymenoptera, Apidae) deposited in the Museu de Zoologia da Universidade de São Paulo, Brazil, pp. 335-361 in Papéis Avulsos de Zoologia (São Paulo) (São Paulo) 55 (24) on page 349, DOI: 10.1590/0031-1049.2015.55.24, http://zenodo.org/record/4656393
Knowledge graph analytics platform combining LINCS and IDG for drug target illumination
Creators: name: Yang, Jeremy J
name: Gessner, Christopher
name: Duerksen, Joel
name: Bieber, Daniel
name: Binder, Jessica
name: Ozturk, Murat
name: Foote, Brian
name: McEntire, Robin
name: Stirling, Kyle
name: Ding, Ying
name: Wild, David
Publisher: name: Zenodo
Year: 2021
Subjects: bioinformatics
drug discovery

description: Talk presented at the ISMB-ECCB Bioinformatics Open Source Conference (BOSC2021), July 25-30, 2021.
Additional file 2 of Assessing patient safety in a pediatric telemedicine setting: a multi-methods study
Creators: name: Haimi, Motti
name: Shuli Brammli-Greenberg
name: Baron-Epel, Orna
name: Waisman, Yehezkel
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 2: Supplemental Table 2. Medical Factors and Decision Reasonableness.