cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Parameterized optimized effective potential for atoms
Creators: name: Sarsa, A.
name: Galvez, F. J.
name: Buendia, E.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The optimized effective potential equations for atoms have been solved by parameterizing the potential. The expansion is tailored to fulfill the known asymptotic behavior of the effective potential at both short and long distances. Both single configuration and multi configuration trial wave functions are implemented. Applications to several atomic systems are presented improving previous works. The results here obtained are very close to those calculated in either the Hartree-Fock and the multi configurational Hartree-Fock framework.
description: 8 pages, 3 figures
EXPLORING POSSIBILITIES OF REPLACEMENT OF RUNWAY NAVIGATIONAL LIGHTS WITH LASERS AT AIRFIELDS.pdf
Creators: name: Ghalot, Risham Singh
Publisher: name: figshare
Year: 2021
Subjects: subject: Aerospace Engineering
subject: FOS: Mechanical engineering
subject: 90606 Photonics and Electro-Optical Engineering (excl. Communications)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: 20502 Lasers and Quantum Electronics
subject: FOS: Physical sciences

description: As the aircraft operations have always been influenced by the weather. Whilst modern aircraft design and the availability of weather observations and forecasts contribute to a predominantly very safe flying environment, there remain occasions where severe weather events have been identified as being a contributing factor in the causal chain of accidents and incidents. Such events remain of concern within the aviation community and corresponding safety recommendations have been addressed to EASA by investigating authorities. For the given topic, we will be discussing about one of the sectors of the aviation i.e. airport navigation lights. Traditional lights and LED’s are not so efficient in the worst climatic conditions like snow, heavy rain and fog, as they decrease the visibility making difficulties for pilot and causing danger to the lives of all people on-board. Not only weather, but also the lamps or LED’s used are also not beneficial economically, as they consume a lot of electricity and are expensive to repair or change. To provide a solution for this, a new idea is being introduced of directing the aircrafts with the help of laser lamps. In this article, we will talk about the concept of using lasers as signalling lamps for making the human eyes eligible to see around the landing area in order to safely land in bad climatic conditions. It will basically discuss about the experiments of a green laser (λ = 532 nm, P = 50 mW) and LED (P = 3000 mW) in different weather conditions. The main aim of this idea will be to provide high visibility in bad weathers and make easier for pilots to safely land and dock and moreover using this technology in daily life too.
Quadrupole Effects on Nuclear Magnetic Resonance Gyroscopes
Creators: name: Chang, Yue
name: Wan, Shuang-ai
name: Qin, Jie
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Nuclear magnetic resonance gyroscopes that detect rotation as a shift in the precession frequency of nuclear spins, have attracted a lot of attentions. Under a feedback-generated drive, the precession frequency is supposed to be dependent only on the angular momentum and an applied magnetic field. However, nuclei with spins larger than 1/2, experience electric quadrupole interaction with electric field gradients at the cell walls. This quadrupole interaction shifts the precession frequencies of the nuclear spins, which brings inaccuracy to the rotation measurement as the quadrupole interaction constant $C_q$ is difficult to precisely measure. In this work, the effects of quadrupole interaction on nuclear magnetic resonance gyroscopes is theoretically studied. We find that, when the constant $C_q$ is small compared to the characteristic decay rate of the system, as the strength of the feedback-driving field increases, the quadrupole shift monotonically decreases, regardless of the sign of $C_q$. In large $C_q$ regime, more than one precession frequency exists, and the nuclear spins may precess with a single frequency or multi-frequencies depending on initial conditions. In this regime, with large driving amplitudes, the nuclear spin can restore the single-frequency-precession. These results are obtained by solving an effective master equation of the nuclear spins in a rotating frame, from which both the steady-state solutions and dynamics of the system are shown.
description: 7 pages, 7 figures
title: The landed interest and the development of the South Yorkshire coalfield 1750 to 1830
Creators: name: Medlicott, Ian Raoul
Publisher: name: The Open University
Year: 1982

description: The Norfolk and Rockingham-Fitzwilliam families possessed the two most extensive landed estates in South Yorkshire. It was the consolidated nature of the property which placed the owners in a favourable position for the exploitation of minerals. This is essentially a comparative study between the two great landed estates in the development of their collieries. Both landed proprietors were initially reluctant to take the collieries into direct management, but once the financial situation forced them to do so, the ensuing capital investment turned their mines into the most extensive in South Yorkshire, Although the thesis is concerned mainly with the expansion and management of the collieries, no work of this kind can omit social factors relating to mining, and therefore these will be referred to where appropriate. The expansion and profitability of the two mining enterprises were determined by transport developments. Whereas Norfolk sought to protect his Sheffield market by opposing transport schemes into Sheffield, Rockingham and Fitzwilliam actively participated in schemes that appeared to open more extensive markets. However, neither landed proprietor was able to break out of the limited South Yorkshire market, before the coming of the railways. The proprietors of extensive collieries in the eighteenth century were pioneers in mining technology and it was in this area that the Norfolks, in particular, made notable contributions. But problems associated with management and accounting were not adequately solved. Although the proprietors of both estates could exercise control only from a distance, they were not prepared to delegate managerial responsibilities. This led not only to inefficiency but an inadequate response to changing market conditions. In accounting, too much reliance was placed on the steward and master system - then common practice on the landed estates. They were unable to come to terms with current and capital accounts, with little attempt at depreciation accounting, which disguised the true profit situation of their collieries. Even so, the owners of the Sheffield and Wentworth estates were pioneers in large- scale mining, and it was on their capital investment, technological innovations, and development of coal markets that the nineteenth century coal industry in South Yorkshire was built.
Rural Cooperatives Magazine, September/October 2004
Creators: name: Scroggs, Craig
name: Rodenburg, Jim
name: Thompson, Stephen
name: Sexton, Richard
name: Wadsworth, Jim
name: Scroggs, Craig
name: Rodenburg, Jim
name: Thompson, Stephen
name: Sexton, Richard
name: Wadsworth, Jim
Publisher: name: Unknown
Year: 2004
Subjects: Agribusiness
Community/Rural/Urban Development

description: Features - California ag tour gives U.S. trade rep crucial insight into state’s export crops; Proposed sale of Farm Credit System lender to Dutch bank ignites controversy; Great Escapes; Direct Access!; Backyard powerhouses; The canning of Tri Valley; Signs of Life; Three honored for communications excellence
Development of a two-dimensional virtual pixel X-ray imaging detector for time-resolved structure research
Creators: name: Orthen, Andre
name: Wagner, Hendrik
name: Martoiu, Sorin
name: Amenitsch, Heinz
name: Bernstorff, Sigrid
name: Besch, Hans-Juergen
name: Menk, Ralf-Hendrik
name: Nurdan, Kivanc
name: Rappolt, Michael
name: Walenta, Albert Heinrich
name: Werthenbach, Ulrich
Publisher: name: arXiv
Year: 2003
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: An interpolating two-dimensional X-ray imaging detector based on a single photon counter with gas amplification by GEM (gas electron multiplier) structures is presented. The detector system can be used for time-resolved structure research down to the microsecond-time domain. The prototype detector has been tested at the SAXS beamline at ELETTRA synchrotron light source with a beam energy of 8 keV to test its capabilities in the rough beamline environment. The imaging performance is examined with apertures and standard diffraction targets. Finally, the application in a time-resolved lipid temperature jump experiment is presented.
description: 10 pages, 14 figures, accepted for publication in J. Synchrotron Rad, revised version, paper shortened, minor changes
Beyond Textual Issues: Understanding the Usage and Impact of GitHub Reactions
Creators: name: Borges, Hudson
name: Brito, Rodrigo
name: Valente, Marco Tulio
Publisher: name: arXiv
Year: 2019
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Recently, GitHub introduced a new social feature, named reactions, which are "pictorial characters" similar to emoji symbols widely used nowadays in text-based communications. Particularly, GitHub users can use a pre-defined set of such symbols to react to issues and pull requests. However, little is known about the real usage and impact of GitHub reactions. In this paper, we analyze the reactions provided by developers to more than 2.5 million issues and 9.7 million issue comments, in order to answer an extensive list of nine research questions about the usage and adoption of reactions. We show that reactions are being increasingly used by open source developers. Moreover, we also found that issues with reactions usually take more time to be handled and have longer discussions.
description: 10 pages
Instrumentos de Apoio à Pesquisa Bibliográfica em CD-ROM Inventarios de Publicações Periódicas
Creators: name: Paiva, Lucília
Publisher: name: Cadernos BAD
Year: 1991

description: Instrumentos de Apoio à Pesquisa Bibliográfica em CD-ROM Inventarios de Publicações Periódicas
description: Cadernos BAD, N.º 1 (1991)
Deformed quantum Calogero-Moser problems and Lie superalgebras
Creators: name: Sergeev, A. N.
name: Veselov, A. P.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 17B20, 81R12

description: The deformed quantum Calogero-Moser-Sutherland problems related to the root systems of the contragredient Lie superalgebras are introduced. The construction is based on the notion of the generalized root systems suggested by V. Serganova. For the classical series a recurrent formula for the quantum integrals is found, which implies the integrability of these problems. The corresponding algebras of the quantum integrals are investigated, the explicit formulas for their Poincare series for generic values of the deformation parameter are presented.
description: 30 pages, 1 figure
Rural Cooperatives Magazine, September/October 2005
Creators: name: Thompson, Stephen
name: Crooks, Anthony
name: Dunn, John
name: Lawless, Greg
name: Reynolds, Anne
name: Borst, Alan
name: DuMont, Amber
name: Abernathy, Donna
name: Thompson, Stephen
name: Crooks, Anthony
name: Dunn, John
name: Lawless, Greg
name: Reynolds, Anne
name: Borst, Alan
name: DuMont, Amber
name: Abernathy, Donna
Publisher: name: Unknown
Year: 2005
Subjects: Agribusiness
Community/Rural/Urban Development

description: Features - Running on Empty?; Farmer-owned ethanol and the role of information technology; Diversified rural economy goal of Under Secretary Dorr; Taking Stock; Antitrust review reveals strong co-op support for Capper-Volstead; When the sky falls
Dressed excitations, thermodynamics and relaxation in the 1D XXZ Heisenberg model
Creators: name: Pavlis, A.
name: Zotos, X.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this note, we discuss the low and high temperature contribution of Thermodynamic Bethe Ansatz (TBA) dressed excitations in the thermodynamics and energy-magnetization relaxation within the Generalized Hydrodynamics approach in the linear response regime. In particular, we show how the temperature dependent dispersions of the excitations reproduce well known behavior of the specific heat, magnetic susceptibility, spin and energy Drude weights. In this context, we derive a further formulation of the Drude weights from the finite wavevector relaxation. Furthermore, we contrast the TBA description of thermodynamics and dynamics in terms of a multitude of string excitations to that in terms of a single quasi-particle in low energy effective theories.
description: 18 pages
Higher order asymptotic expansion of solutions to abstract linear hyperbolic equations
Creators: name: Sobajima, Motohiro
Publisher: name: arXiv
Year: 2019
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35L90, 35B40

description: The paper concerned with higher order asymptotic expansion of solutions to the Cauchy problem of abstract hyperbolic equations of the form $u''+Au+u'=0$ in a Hilbert space, where $A$ is a nonnegative selfadjoint operator. The result says that by assuming the regularity of initial data, asymptotic profiles (of arbitrary order) are explicitly written by using the semigroup $e^{-tA}$ generated by $-A$. To prove this, a kind of maximal regularity for $e^{-tA}$ is used.
description: 16 pages
Extended states in disordered systems: role of off-diagonal correlations
Creators: name: Zhang, Wei
name: Ulloa, Sergio E.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study one-dimensional systems with random diagonal disorder but off-diagonal short-range correlations imposed by structural constraints. We find that these correlations generate effective conduction channels for finite systems. At a certain golden correlation condition for the hopping amplitudes, we find an extended state for an infinite system. Our model has important implications to charge transport in DNA molecules, and a possible set of experiments in semiconductor superlattices is proposed to verify our most interesting theoretical predictions.
description: 4pp, 3 figs, to appear in PRB
Stacks of twisted modules and integral transforms
Creators: name: D'Agnolo, Andrea
name: Polesello, Pietro
Publisher: name: arXiv
Year: 2003
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14A20, 32C38, 35A22

description: Stacks were introduced by Grothendieck and Giraud and are, roughly speaking, sheaves of categories. Kashiwara developed the theory of twisted modules, which are objects of stacks locally equivalent to stacks of modules over sheaves of rings. In this paper we recall these notions, and we develop the formalism of operations for stacks of twisted modules. As an application, we state a twisted version of an adjunction formula which is of use in the theory of integral transforms for sheaves and D-modules.
description: latex, 43 pages
On the classical-quantum correspondence for the scattering dwell time
Creators: name: Lewenkopf, Caio H.
name: Vallejos, Raul O.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Using results from the theory of dynamical systems, we derive a general expression for the classical average scattering dwell time, tau_av. Remarkably, tau_av depends only on a ratio of phase space volumes. We further show that, for a wide class of systems, the average classical dwell time is not in correspondence with the energy average of the quantum Wigner time delay.
description: 5 pages, 1 figure
title: The measurement of species diversity, and its relationship to community stability.
Creators: name: Shaw, Kathleen Muriel
Publisher: name: The Open University
Year: 1981

description: Species diversity is hard to define either as a single attribute or as two separate concepts of number of species present in a community and the equitability of the distribution of individuals amongst the species. While it is easy to produce a list of conditions that should be satisfied by any measure agreeing with our intuitive conception of equitability, some of these conditions are mutually contradictory. It is hardly surprising therefore that no single measure of diversity or equitability is perfectly satisfactory and that different measures may produce conflicting orderings of the same set of communities. Chapter 1 gives an introductory survey of the various ways of measuring diversity and equitability - by a single function of the species abundances, by a parameter of a distribution fitted to the observed distribution of species abundances, or by defining a partial ordering of communities. I comment on the principles behind a definition of diversity or equitability, and on the ideas to be considered when choosing a suitable measure. In Chapter 2 I first discuss the ways in which the environment may affect the diversity of communities able to live there, and present some of the experimental evidence. Secondly I discuss the possibility that the diversity of a community may affect its ability to survive in a changing environment. Here experimental evidence is sparse and contradictory. Therefore, in Chapter 5, I study this problem further by computer simulation, and show that factors other than diversity play an important part. In my pilot study of only two species the main effect on stability is that of changing the equilibrium number of individuals. No diversity effect could be detected. Perhaps more species are needed, but even a three-species simulation involves considerably more variables if it is to be investigated fully.
Coringasuchus Kellner, Pinheiro, Azevedo, R, Carvalho & Oliveira, 2009, gen. nov.
Creators: name: Kellner, Alexander W. A.
name: Pinheiro, André E. P.
name: Azevedo, Sergio A. K.
name: R, Deise D.
name: Carvalho, Luciana Barbosa De
name: Oliveira, Gustavo R.
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mesoeucrocodylia
Coringasuchus

description: Coringasuchus gen. nov.
Type species: Coringasuchus anisodontis gen. sp. nov.
Etymology: The generic name is derived from the name of the site (Laje do Coringa) where the specimen was found and souchos, the Greek word for crocodile.
Diagnosis: As for the type and only species.
description: Published as part of Kellner, Alexander W. A., Pinheiro, André E. P., Azevedo, Sergio A. K., R, Deise D., Carvalho, Luciana Barbosa De & Oliveira, Gustavo R., 2009, A new crocodyliform from the Alcântara Formation (Cenomanian), Cajual Island, Brazil, pp. 49-58 in Zootaxa 2030 on page 50, DOI: 10.11646/zootaxa.2030.1.4, http://zenodo.org/record/274758
IMPORTANCIA ECONOMICA DE LA EFICIENCIA DE PRODUCCION DE BECERROS UTILIZANDO DIVERSAS ALTERNATIVAS DE PRODUCCIÓN Y MANEJO EN EL CENTRO DE SONORA, MEXICO
Economic importance of the efficiency of production of calves using different alternatives of production and handling in the center of Sonora, Mexico
Creators: name: Moreno, Salomón
name: Ibarra, Fernando A.
name: Martín, Martha H.
name: Retes, Rafael
name: Jorge E. Hernández, Jorge E.
name: Rodríguez, José Del Carmen
name: Moreno, Salomón
name: Ibarra, Fernando A.
name: Martín, Martha H.
name: Retes, Rafael
name: Jorge E. Hernández, Jorge E.
name: Rodríguez, José Del Carmen
Publisher: name: Unknown
Year: 2018
Subjects: subject: Agribusiness
subject: Profitability
subject: early weaning
subject: creep feeding
subject: livestock
subject: productivity

description: The study was conducted in Carbo, Sonora, Mexico, in 2017, in order to determine production strategies calves under favorable environments of increase in prices, evaluating: 1) Early weaning (DP), 2) Creep feeding (CF) and 3) Control, and analyze the cost benefit and profit from them. Sixty animals at random from a group of 100 cows five years of age were selected Charbray race. For each treatment, 30 animals, 15 were females offspring and 15 male offspring. The variables evaluated were: (1) Weight at weaning of calves, (2) Weight of cows at weaning, (3) Weight sale of the offspring; (4) Weight and body condition of cows at weaning, pregnancy rate and calving interval, (5) Production Costs of kilos of meat and (6). Projection of profitability in three scenarios in an area with capacity for 100 animals. All variables were analyzed using analysis of variance (P <0.05). Financial runs were performed using computer software for analysis and evaluation Agricultural Investment. The average daily gain of calves was 1.13 and 0.451 kg/animal/day for DP and Witness, respectively treatments. The percentage of cows calving was 95 and 85 and 50, open and the number of days was 90, 165 and 240, for the treatment of DP, CF) and the Control, respectively. The control treatment showed negative balances during the 10-year projection. With the DP the best results, with annual earnings from the third year ranging from $938,976 to $1,114,945 pesos. The DP showed to be a viable option for increasing the productivity and profitability of farms. The results of the financial analysis show that the greatest benefit is achieved with the DP as it enables the production of calves steadily during the 10 years of the project, compared to the control; which presents lag in production.
Dijet rates with symmetric E_t cuts
Creators: name: Banfi, Andrea
name: Dasgupta, Mrinal
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider dijet production in the region where symmetric cuts on the transverse energy, $E_t$, are applied to the jets. In this region next-to--leading order calculations are unreliable and an all-order resummation of soft gluon effects is needed, which we carry out. Although, for illustrative purposes, we choose dijets produced in deep inelastic scattering, our general ideas apply additionally to dijets produced in photoproduction or $γγ$ processes and should be relevant also to the study of prompt di-photon $E_t$ spectra in association with a recoiling jet, in hadron-hadron processes
description: 28 pages, 4 figures
Analysis of primary care electronic health record data of people living with hepatitis B virus: infection and hepatocellular carcinoma risk associated with socio-economic deprivation.
Creators: name: Campbell, C
name: Wang, T
name: Gillespie, I
name: Barnes, E
name: Matthews, PC
Publisher: name: The Francis Crick Institute
Year: 2024
Subjects: classificationCode: Infectious Disease
subject: Infectious Disease
classificationCode: Immunology
subject: Immunology
subject: FOS: Clinical medicine
classificationCode: Genetics & Genomics
subject: Genetics & Genomics

description: OBJECTIVES: We set out to characterise chronic hepatitis B (CHB) in the primary care population in England and investigate risk factors for progression to hepatocellular carcinoma (HCC). STUDY DESIGN: Retrospective cohort study. METHODS: We identified 8039 individuals with CHB in individuals aged ≥18 years between 1999 and 2019 in the English primary care database QResearch. HCC risk factors were investigated using Cox proportional hazards modelling. RESULTS: Most of those with a record of CHB were males (60%) of non-White ethnicity (>70%), and a high proportion were in the most deprived Townsend deprivation quintile (44%). Among 7029 individuals with longitudinal data, 161 HCC cases occurred. Increased HCC hazards were significantly associated with male sex (adjusted hazards ratio [aHR] 3.17, 95% confidence interval [95% CI] 1.92-5.23), in the fifth deprivation quintile as compared to the third quintile (aHR 1.69, 95% CI 1.01-2.84), with older age (for age groups 56-65 and ≥66 years, compared to 26-35 years, aHRs 2.82 [95% CI 1.45-5.46] and 3.76 [95% CI 1.79-7.9], respectively), Caribbean ethnicity (aHR 3.32, 95% CI 1.43-7.71, compared to White ethnicity), ascites (aHR 3.15, 95% CI 1.30-7.67), cirrhosis (aHR 6.55, 95% CI 4.57-9.38) and peptic ulcer disease (aHR 2.26, 95% CI 1.45-3.51). CONCLUSIONS: Targeting interventions and HCC surveillance at vulnerable groups is essential to improve CHB outcomes and to support progress towards international goals for the elimination of hepatitis infection as a public health threat.
Droplet impact of Newtonian fluids and blood on simple fabrics: effect of fabric pore size and underlying substrate
Creators: name: de Goede, T. C.
name: Moqaddam, A. M.
name: Limpens, K. C. M.
name: Kooij, S. A.
name: Derome, D.
name: Carmeliet, J.
name: Shahidzadeh, N.
name: Bonn, D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: When a droplet impacts a fabric mesh at a sufficiently high impact velocity, it not only spreads over the fabric but also penetrate its pores. To determine the influence of this liquid penetration of the fabric on droplet spreading on thin fabric meshes, we measured the droplet spreading ratio on fabric with and without an underlying substrate using a high-speed camera. For fabrics without a substrate, the droplet spreading ratio is reduced as the fabric penetration by the liquid reduces the droplet volume spreading on top of the fabric. Using entropic lattice Boltzmann simulations, we find that the lower droplet spreading ratio on fabrics, both with and without a substrate, is due to an increase of viscous losses inside the droplet during spreading. Comparing droplet impact of blood with its Newtonian counterpart, we show that for spreading on fabrics, just like on smooth surfaces, blood can be approximated as a Newtonian fluid.
description: 14 pages, 9 figures, 2 Supplemental Movies (not included)
title: Kinetic study of the gas phase pyrolysis of cis-1-chloro-2-butene
Creators: name: Lee, Yok-Chin
Publisher: name: The Open University
Year: 1980

description: The pyrolysis of cis-l-chloro-2-butene has been studied in temperature range 564 - 617 K, The predominant reaction is the elimination of HC1 by a pathway that is believed to be homogeneous and unimolecular. The Arrhenius parameters suggests a six-centred activated complex: (see document for further details). This reaction is accompanied by a relatively slow isomerisation, cis-trans, which is shown to be heterogeneous. Subsequent polymerisation of the product, butadiene also occurs. Comparisons of the rate data for the elimination reaction with that of structurally similar compounds and with alkyl halides can be made. It appears that in the six-centred mechanism the hydrogen plays a more important role in the formation of the incipient hydrogen halide molecule than it is generally thought to do in the more usual four-centred mechanism. Nevertheless, electron-releasing groups have a large effect on the rate, similar to that observed in ester pyrolysis, and hence it is inferred that there is substantial development of polarity in the six-centred mechanism.
Discrimination of Dark Matter Mass and Velocity Distribution by Directional Detection
Creators: name: Nagao, Keiko I.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The velocity distribution of dark matter is supposed to be isotropic Maxwell- Boltzmann distribution in most cases, however, its anisotropy is suggested by some simulations. We investigate conditions to give constraints on the anisotropy with directional direct detections.
description: 3 pages, 10 figures. Prepared for proceedings of TAUP 2019
Utilização de uma Base de Dados em CD-ROM no Centro de Documentação Científica e Técnica do INIC
Creators: name: Silva, Gabriela Lopes
Publisher: name: Cadernos BAD
Year: 1991

description: Utilização de uma Base de Dados em CD-ROM no Centro de Documentação Científica e Técnica do INIC
description: Cadernos BAD, N.º 1 (1991)
New insights to the photometric structure of Blue Compact Dwarf Galaxies from deep Near-Infrared studies I. Observations, surface photometry and decomposition of surface brightness profiles
Creators: name: Noeske, K. G.
name: Papaderos, P.
name: Cairos, L. M.
name: Fricke, K. J.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (shortened) We analyze deep Near Infrared (NIR) broad band images for a sample of Blue Compact Dwarf Galaxies (BCDs), allowing for the quantitative study of their extended stellar low-surface brightness (LSB) host galaxies. NIR surface brightness profiles (SBPs) of the LSB hosts agree at large galactocentric radii with those from optical studies. At small to intermediate radii, however, the NIR data reveal for more than half of our sample a significant flattening of the exponential SBP of the LSB host. Such SBPs ("type V" SBPs, Binggeli & Cameron 1991) have rarely been detected in LSB hosts of BCDs at optical wavelengths, where the relative flux contribution of the starburst is stronger than in the NIR and can hide such central intensity depressions of the LSB host. The structural properties, frequency and physical origin of type V LSB SBPs in BCDs and other dwarf galaxies have not yet been systematically studied. Nevertheless, their occurrence in a significant fraction of BCDs would impose important new constraints to the radial distribution of their stellar mass, and to the photometric fading of BCDs after the termination of star-forming activity. Both a modified exponential (Papaderos et al. 1996a) and the Sersic law give satisfactory empirical descriptions for type V SBPs. However, we argue that the practical applicability of Sersic fits to LSB SBPs of BCDs is limited by, e.g., the extreme sensitivity of the solutions to small SBP uncertainties. Most stellar LSB host galaxies in the sample show optical-NIR colors indicative of evolved stellar populations with subsolar metallicity. Unsharp-masked NIR images and optical-NIR maps reveal numerous morphological details, and cases of non-uniform dust absorption on spatial scales up to ~1 kpc.
description: 29 pages, 17 figures; accepted for publication in Astronomy & Astrophysics; 1 typo in Table 2 corrected; higher resolution images are available at http://www.uni-sw.gwdg.de/~knoeske/PUB_LIST/noeske_BCDs_NIR.ps.gz
Pesquisa em Linha Versus CD-ROM
Creators: name: Crespo, Maria Fátima
Publisher: name: Cadernos BAD
Year: 1991

description: Com o aparecimento das bases de dados em suporte CD-ROM, as bibliotecas irão utilizar mais frequentemente esta nova tecnologia do que as bases de dados em linha.
description: Cadernos BAD, N.º 1 (1991)
Einfluss von Impfungen und Kontaktreduktionen auf die dritte Welle der SARS-CoV-2-Pandemie und perspektivische Rückkehr zu prä-pandemischem Kontaktverhalten
Creators: name: Scholz, Stefan
name: Waize, Maria
name: Weidemann, Felix
name: Treskova-Schwarzbach, Marina
name: Haas, Laura
name: Harder, Thomas
name: Karch, André
name: Lange, Berit
name: Kuhlmann, Alexander
name: Jäger, Veronika
name: Wichmann, Ole
Publisher: name: Robert Koch-Institut
Year: 2021
Subjects: subject: SARS-CoV-2
subject: COVID-19
subject: Schutzimpfung
subject: Modellierung
subject: Infektionsschutzmaßnahmen
subject: 610 Medizin und Gesundheit

description: Das im Epidemiologischen Bulletin 13/2021 vorgestellte mathematische Modell schätzt die voraussichtlichen Effekte der COVID-19-Impfung in der Bevölkerung in Deutschland und vergleicht mögliche Strategien zur Priorisierung einzelner Bevölkerungsgruppen bei Knappheit der verfügbaren Impfstoffdosen. Das Modell ermöglicht nicht nur die Abbildung des aktuellen Infektionsgeschehens, sondern kann über Fragestellungen zur Impfstrategie hinaus auch Strategien zur Lockerung der bestehenden bzw. die Wiederaufnahme von Kontaktbeschränkungen analysieren. Dabei können saisonale Effekte auf die Übertragung von SARS-CoV-2 sowie der Einfluss neuer Virusvarianten berücksichtigt werden.
title: Metastability in statistical mechanics.
Creators: name: Martinez, Jose Raphael
Publisher: name: The Open University
Year: 1982

description: In this dissertation we deal mainly with the problem of metastability in statistical mechanics. In Chapter I we review the analytic aspects of metastability. Taking stability as the basic concept Sewell defined metastable states to be those states which are locally but not globally stable. For a hard core continuous system the pressure functions of the metastable state is found to be the real analytic continuation in the chemical potential of the pressure for the equilibrium phase In Section 2 we present the result of Landford and Ruelle showing the impossibility, in a model with short range forces, of the existence of metastable states. Langer Vs method using the Mayer series expansion ends this section. We also discuss two descriptions of metastability based on eigenvalue degeneracy. In Chapter II we describe the dynamic aspects of metastability. A "restricted ensemble" is defined and it is proved that the escape rate can be made very small. By using the Becker- Dôring set of equations it is shown that the behaviour of the system is governed by a "slow mechanism" if the state is a point in the restricted ensemble. We provide a rigorous version of the Boltzmann-factor approximation to the expected number of N-particle clusters mN. Similar results are shown to hold in N a special case of an Ising model and in a hard core continuous model. In Chapter III we work with a continuous model and obtain an approximation to mN which is equivalent to the one obtained in Chapter II; by making reasonable assumptions we present an expression for mN in agreement with the results of nucleation theory.
Opisocrostis bruneri Baker 1895
Creators: name: Morrone, Juan J.
name: Acosta, Roxana
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Siphonaptera
Ceratophyllidae
Opisocrostis
Opisocrostis bruneri

description: O. bruneri (Baker, 1895)
Pulex bruneri Baker, 1895: 130.
Opisocrostis bruneri; Jordan, 1933a: 73.
Oropsylla (Opisocrostis) bruneri; Brown, 1944: 209.
Distribution. Canada and USA.
Hosts. Sorex cinereus. Other hosts. Carnivora: Felis sp., Mustela sp., and Vulpes sp. Rodentia: Geomys sp., Peromyscus sp., Spermophilus franklinii, S. richardsoni, S. tridecemlineatus, Tamias minimus borealis, and Thomomys talpoides (Traub et al., 1983; Ayala­Barajas et al., 1988; Whitaker, 2004).
description: Published as part of Morrone, Juan J. & Acosta, Roxana, 2006, A synopsis of the fleas (Insecta: Siphonaptera) parasitizing New World species of Soricidae (Mammalia: Insectivora), pp. 1-30 in Zootaxa 1354 on pages 6-7, DOI: 10.5281/zenodo.273605
Distributions of Distances and Volumes of Balls in Homogeneous Lens Spaces
Creators: name: Balch, Brenden
name: Peterson, Chris
name: Shonkwiler, Clayton
Publisher: name: arXiv
Year: 2020
Subjects: subject: Differential Geometry (math.DG)
subject: Geometric Topology (math.GT)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 53C30 (primary) 60D05, 57K35 (secondary)

description: Lens spaces are a family of manifolds that have been a source of many interesting phenomena in topology and differential geometry. Their concrete construction, as quotients of odd-dimensional spheres by a free linear action of a finite cyclic group, allows a deeper analysis of their structure. In this paper, we consider the problem of moments for the distance function between randomly selected pairs of points on homogeneous three-dimensional lens spaces. We give a derivation of a recursion relation for the moments, a formula for the $k$th moment, and a formula for the moment generating function, as well as an explicit formula for the volume of balls of all radii in these lens spaces.
description: 17 pages, 4 figures
AGMEMOD Outlook for Agricultural and Food Markets in EU Member States 2018-2030
Creators: name: Salamon, Petra
name: Banse, Martin
name: Donnellan, Trevor
name: Haß, Marlen
name: Jongeneel, Roel
name: Laquai, Verena
name: Leeuwen, Myrna Van
name: Reziti, Ioanna
name: Salputra, Guna
name: Zirngibl, Max-Emanuel
name: Salamon, Petra
name: Banse, Martin
name: Donnellan, Trevor
name: Haß, Marlen
name: Jongeneel, Roel
name: Laquai, Verena
name: Leeuwen, Myrna Van
name: Reziti, Ioanna
name: Salputra, Guna
name: Zirngibl, Max-Emanuel
Publisher: name: Unknown
Year: 2019
Subjects: subject: Agricultural and Food Policy
subject: Projections
subject: agricultural market
subject: PE
subject: agricultural market model
subject: dairy market
subject: meat market
subject: grain market
subject: oilseed market
subject: EU member states
subject: Projektionen
subject: Agrarmarkt
subject: Agrarmarktmodell
subject: Milchmarkt
subject: Fleischmarkt
subject: Getreidemarkt,
subject: Ölsaatenmarkt,
subject: EU-Mitgliedsstaaten

description: Policy, administration and industry need medium-term projections of the expected developments in the agri-food markets for their decision-making processes. The EU Commission presents such projections for the EU as a whole in December of each year. Those projections and their assumptions regarding policy and macroeconomic developments are depicted to the level of individual EU Member States with the exception of Luxembourg, which is included in the figures of Belgium, by applying the partial equilibrium model AGMEMOD. The working paper briefly describes the approach to establish projections for the EU Member States. The projections cover the markets of main agricultural products, in particular for cereals and oilseeds (rapeseed and sunflower seed), livestock (cattle, pigs, goats and sheep), meat (beef, pork, and poultry), milk and dairy products (drinking milk, butter, cheese, skimmed milk powder, whole milk and semi-skimmed milk powder). The outcomes comprise items like areas, livestock numbers, yields, production, trade and use, as well as prices. The individual projection results are displayed in tables.
description: DOI:10.3220/WP1544622148000
Energy Efficiency Optimization: A New Trade-off Between Fairness and Total System Performance
Creators: name: Efrem, Christos N.
name: Panagopoulos, Athanasios D.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Information Theory (cs.IT)
subject: Networking and Internet Architecture (cs.NI)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The total energy efficiency (TEE), defined as the ratio between the total data rate and the total power consumption, is considered the most meaningful performance metric in terms of energy efficiency (EE). Nevertheless, it does not depend directly on the EE of each link and its maximization leads to unfairness between the links. On the other hand, the maximization of the minimum EE (MEE), i.e., the minimum of the EEs of all links, guarantees the fairest power allocation, but it does not contain any explicit information about the total system performance. The main trend in current research is to maximize TEE and MEE separately. Unlike previous contributions, this letter presents a general multi-objective approach for EE optimization that takes into account both TEE and MEE at the same time, and thus achieves various trade-off points in the MEE-TEE plane. Due to the nonconvex form of the resulting problem, we propose a low-complexity algorithm leveraging the theory of sequential convex optimization (SCO). Last but not least, we provide a novel theoretical result for the complexity of SCO algorithms.
description: Accepted for publication in IEEE Wireless Communications Letters
Megabothris quirini
Creators: name: Morrone, Juan J.
name: Acosta, Roxana
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Siphonaptera
Ceratophyllidae
Megabothris
Megabothris quirini

description: M. quirini (Rothschild, 1905)
Ceratophyllus quirini Rothschild, 1905: 163. Ceratophyllus querini Jordan, 1929: 171. Megabothris quirini; Jordan, 1933a: 77.
Distribution. Canada and USA.
Hosts. Sorex cinereus. Other hosts. Insectivora (Talpidae): Condylura cristata. Lagomorpha: Sylvilagus n. nuttallii. Rodentia: Clethrionomys gapperi, Microtus chrotorrhinus, M. longicaudus, M. ochrogaster, M. oeconomus, M. pennsylvanicus, Napaeozapus insignis, Peromyscus leucopus, P. maniculatus, P. m. artemisiae, P. m. borealis, Spermophilus sp., Tamias minimus borealis, Tamiasciurus h. hudsonicus, and Zapus sp. Carnivora: Urocyon cinereoargenteus (Holland, 1949; Benton & Kelly, 1975; Traub et al., 1983; Whitaker, 2004).
description: Published as part of Morrone, Juan J. & Acosta, Roxana, 2006, A synopsis of the fleas (Insecta: Siphonaptera) parasitizing New World species of Soricidae (Mammalia: Insectivora), pp. 1-30 in Zootaxa 1354 on page 5, DOI: 10.5281/zenodo.273605
String Theory on Lorentzian AdS_3 in Minisuperspace
Creators: name: Hikida, Yasuaki
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate string theory on Lorentzian AdS_3 in the minisuperspace approximation. The minisuperspace model reduces to the worldline theory of a scalar particle in the Lorentzian AdS_3. The Hilbert space consists of normalizable wave functions, and we see that the unitarity of the theory (or the self-adjointness of the Hamiltonian) restricts the possible sets of wave functions. The restricted wave functions have the property of probability conservation (or current conservation) across the horizons. Two and three point functions are also computed. In the Euclidean model functional forms of these quantities are restricted by the SL(2,R) symmetry almost uniquely, however, in the Lorentzian model there are several ambiguities left. The ambiguities are fixed by the direct computation of overlaps of wave functions.
description: 32 pages, no figures, minor changes, references added
Monopsyllus vison Baker 1904
Creators: name: Morrone, Juan J.
name: Acosta, Roxana
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Siphonaptera
Ceratophyllidae
Monopsyllus
Monopsyllus vison

description: M. vison (Baker, 1904)
Ceratophyllus lucidus Baker, 1904: 388. Ceratophyllus vison Baker, 1904: 388. Monopsyllus vison; Jordan, 1933a: 78.
Distribution. Canada and USA.
Hosts. Blarina brevicauda talpoides. Other hosts. Carnivora: Martes americana, Mephitis m. mephitis, and Mustela frenata. Rodentia: Peromyscus maniculatus gracilis and Tamiasciurus hudsonicus (Holland, 1949; Traub et al., 1983; Ayala­Barajas et al., 1988).
description: Published as part of Morrone, Juan J. & Acosta, Roxana, 2006, A synopsis of the fleas (Insecta: Siphonaptera) parasitizing New World species of Soricidae (Mammalia: Insectivora), pp. 1-30 in Zootaxa 1354 on pages 5-6, DOI: 10.5281/zenodo.273605
Uncertainty of Resilience in Complex Networks with Nonlinear Dynamics
Creators: name: Moutsinas, Giannis
name: Zou, Mengbang
name: Guo, Weisi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: Social and Information Networks (cs.SI)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Resilience is a system's ability to maintain its function when perturbations and errors occur. Whilst we understand low-dimensional networked systems' behavior well, our understanding of systems consisting of a large number of components is limited. Recent research in predicting the network level resilience pattern has advanced our understanding of the coupling relationship between global network topology and local nonlinear component dynamics. However, when there is uncertainty in the model parameters, our understanding of how this translates to uncertainty in resilience is unclear for a large-scale networked system. Here we develop a polynomial chaos expansion method to estimate the resilience for a wide range of uncertainty distributions. By applying this method to case studies, we not only reveal the general resilience distribution with respect to the topology and dynamics sub-models, but also identify critical aspects to inform better monitoring to reduce uncertainty.
description: 8pages, 7figures
MODELO ECONOMETRICO DE DEMANDA DE CARNE DE POLLO EN LA CIUDAD DE MEXICO, 1996-2016
Econometric model of demand of poultry meat in Mexico City, 1996-2016
Creators: name: González, Yesenia Rubí
name: Rebollar, Alfredo
name: Rebollar, Samuel
name: Rebollar, Eulogio
name: Hernández, Rosario
name: González, Yesenia Rubí
name: Rebollar, Alfredo
name: Rebollar, Samuel
name: Rebollar, Eulogio
name: Hernández, Rosario
Publisher: name: Unknown
Year: 2018
Subjects: subject: Agribusiness
subject: poultry meat
subject: Mexico City
subject: demand
subject: elasticties

description: With the objective to assess the sensitivity of demand for poultry meat in broiler in Mexico City, in the face of changes in its main determinants, a multiple linear regression model was used where the demand for poultry meat was the dependent variable and as explanatory the real price of chicken, real price of bovine, real income per capita and population, for the period 1996-2016. The price of the product was inverse and inelastic (-0.009) on the quantity demanded, the real income of the consumer behaved as elastic (1.080), the price elasticity of inelastic meat (0.026) and the population had a direct and elastic effect (3.070) on the demand for poultry meat. It is concluded that the number of consumers had the greatest effect on the sensitivity of the demand for broiler poultry meat in Mexico City and that this product behaved as a normal and elastic property upon entry.
A Local Limit Theorem for random walks conditioned to stay positive
Creators: name: Caravenna, Francesco
Publisher: name: arXiv
Year: 2004
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60G50; 60F05; 60K05

description: We consider a real random walk S_n = X_1 + ... + X_n attracted (without centering) to the normal law: this means that for a suitable norming sequence a_n we have the weak convergence S_n / a_n --> f(x) dx, where f(x) is the standard normal density (this happens in particular by the CLT when X_1 has zero mean and finite variance σ^2, with a_n = σ\sqrt{n}). A local refinement of this convergence is provided by Gnedenko's and Stone's Local Limit Theorems, in the lattice and nonlattice case respectively. Now let C_n denote the event (S_1 > 0, ..., S_n > 0) and let S_n^+ denote the random variable S_n conditioned on C_n: it is known that S_n^+ / a_n --> f^+(x) \dd x, where f^+(x) := x \exp(-x^2/2) \ind_{x > 0}. What we establish in this paper is an equivalent of Gnedenko's and Stone's Local Limit Theorems for this weak convergence. We also consider the particular case when X_1 has an absolutely continuous law: in this case the uniform convergence of the density of S_n^+ / a_n towards f^+(x) holds under a standard additional hypothesis, in analogy to the classical case. We finally discuss an application of our main results to the asymptotic behavior of the joint renewal measure of the ladder variables process. Unlike the classical proofs of the LLT, we make no use of characteristic functions: our techniques are rather taken from the so--called Fluctuation Theory for random walks.
description: 20 pages; new version of the paper in a more general setting