cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
MOESM1 of Antibiotic resistance in porcine pathogenic bacteria and relation to antibiotic usage
Creators: name: I. Holmer
name: C. Salomonsen
name: S. Jorsal
name: L. Astrup
name: V. Jensen
name: B. Høg
name: K. Pedersen
Publisher: name: figshare
Year: 2019
Subjects: subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology
subject: Computational Biology

description: Additional file 1: Table S1. Antibiotics tested and the used breakpoint values (μg/mL) for Escherichia coli, Streptococcus suis, Actinobacillus pleuropneumoniae, Staphylococcus hyicus and Bordetella bronchiseptica from Danish pigs.
title: 01_2564
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
Improvement of the Quality and Availability of Public Services of Multifunctional Centers based on Lean Manufacturing
Creators: name: Mariya A. Gurina, Alexandr D. Moiseev
Publisher: name: TuEngr Group
Year: 2021
Subjects: Lean manufacturing technology
Quality of public services
Efficiency improvement
Multifunctional center
Public service mangement
Public service improvement.

description: International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies, 12, 4, 12A4M: 1-11
Reframing SU(1,1) interferometry
Creators: name: Caves, Carlton M.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: SU(1,1) interferometry, proposed in a classic 1986 paper by Yurke, McCall, and Klauder [Phys. Rev. A 33, 4033 (1986)], involves squeezing, displacing, and then unsqueezing two bosonic modes. It has, over the past decade, been implemented in a variety of experiments. Here I take SU(1,1) interferometry apart, to see how and why it ticks. SU(1,1) interferometry arises naturally as the two-mode version of active-squeezing-enhanced, back-action-evading measurements aimed at detecting the phase-space displacement of a harmonic oscillator subjected to a classical force. Truncating an SU(1,1) interferometer, by omitting the second two-mode squeezer, leaves a prototype that uses the entanglement of two-mode squeezing to detect and characterize a disturbance on one of the two modes from measurement statistics gathered from both modes.
Midplane temperature and outer edge of the protoplanetary disk around HD 163296
Creators: name: Dullemond, Cornelis
name: Isella, Andrea
name: Andrews, Sean
name: Skobleva, Iuliia
name: Dzyurkevich, Natalia
Publisher: name: arXiv
Year: 2019
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Knowledge of the midplane temperature of protoplanetary disks is one of the key ingredients in theories of dust growth and planet formation. However, direct measurement of this quantity is complicated, and often depends on the fitting of complex models to the data. In this paper we demonstrate a method to directly measure the midplane gas temperature from an optically thick molecular line, if the disk is moderately inclined. The only model assumption that enters is that the line is very optically thick, also in the midplane region where we wish to measure the temperature. Freeze-out of the molecule onto dust grains could thwart this. However, in regions that are expected to be warm enough to avoid freeze-out, this method should work. We apply the method to the CO 2-1 line channel maps of the disk around HD 163296. We find that the midplane temperature between 100 and 400 au drops only mildly from 25 K down to 18 K. While we see no direct evidence of the midplane being optically thin due to strong CO depletion by freeze-out, we cannot rule it out either. The fact that the inferred temperatures are close to the expected CO freeze-out temperature could be an indication of this. Incidently, for the disk around HD 163296 we also find dynamic evidence for a rather abrupt outer edge of the disk, suggestive of outside-in photoevaporation or truncation by an unseen companion.
description: Accepted for publication in Astronomy and Astrophysics
MOESM3 of Molecular signature of different lesion types in the brain white matter of patients with progressive multiple sclerosis
Creators: name: Elkjaer, Maria
name: Frisch, Tobias
name: Reynolds, Richard
name: Kacprowski, Tim
name: Burton, Mark
name: Kruse, Torben
name: Thomassen, Mads
name: Baumbach, Jan
name: Illes, Zsolt
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: Additional file 3: Figure S1. RNAscope : Negative (red and green targeting two bacterial genes)and postive (PPIB /POLR2A POLR2A ) controls
Weak charge-lattice coupling requires reinterpretation of stripes of charge order in La1-xCaxMnO3
Creators: name: Loudon, J. C.
name: Cox, S.
name: Williams, A. J.
name: Attfield, J. P.
name: Littlewood, P. B.
name: Midgley, P. A.
name: Mathur, N. D.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Modulations in manganites attributed to stripes of charge/orbital/spin order are thought to result from strong electron-lattice interactions that lock the superlattice and parent lattice periodicities. Surprisingly in La1-xCaxMnO3(x>0.5, 90 K), convergent beam (3.6 nm spot) electron diffraction patterns rule out charge stacking faults and indicate a superlattice with uniform periodicity. Moreover, large area electron diffraction peaks are sharper than simulations with stacking faults. Since the electron-lattice coupling does not lock the two periodicities (to yield stripes) it may be too weak to strongly localise charge.
description: Analysis and interpretation are improved and presented better
Efficient storey lateral stiffness estimate and gradient-based multi-objective optimization of reinforced concrete frames with hybrid semi-rigid precast connections
Creators: name: Du, Bin
name: Li, Ge
name: Wu, Yan
name: He, Zheng
name: Qi, Zhe
name: Huang, Guohui
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Space Science
subject: Medicine
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified

description: By fully utilizing the designability of semi-rigid connections in precast concrete structures, the gradient-based interior point algorithm is applied to perform a two-stage optimization with the objectives of minimum material cost and a target interstorey drift ratio distribution. To obtain an efficient storey lateral stiffness estimate for optimization, the modified Muto’s method is further extended to address hybrid distributions of connections. Based on the characteristics of the modified Muto’s method, the dual objectives of attaining the target interstorey drift ratio distribution and minimizing the material cost are treated as two separate objectives in the optimization. A case study on precast concrete frames with different storeys, connection parameters and target interstorey drift ratio distribution patterns demonstrates the efficiency and accuracy of the proposed approach. Such an approach could be suitable for the preliminary design of precast concrete structures with hybrid semi-rigid connections.
A Technique for Separating the Gravitational Torques of Bars and Spirals in Disk Galaxies
Creators: name: Buta, R.
name: Block, D. L.
name: Knapen, J. H.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We describe a Fourier-based method of separating bars from spirals in near-infrared images. The method takes advantage of the fact that a bar is typically a feature with a relatively fixed position angle, and uses the simple assumption that the relative Fourier amplitudes due to the bar decline with radius past a maximum in the same or a similar manner as they rose to that maximum. With such an assumption, the bar can be extrapolated into the spiral region and removed from an image, leaving just the spiral and the axisymmetric background disk light. The procedure allows us to estimate the maximum gravitational torque per unit mass per unit square of the circular speed for the bar and spiral forcing separately, parameters which quantitatively define the bar strength Q_b and the spiral strength Q_s following the recent study of Buta & Block. We outline the complete procedure here using a 2.1 micron image of NGC 6951, a prototypical SAB(rs)bc spiral. We justify our assumption on how to make the bar extrapolation using an analysis of NGC 4394, a barred spiral with only weak near-infrared spiral structure, and we justify the number of needed Fourier terms using NGC 1530, one of the most strongly-barred galaxies (bar class 7) known. We also evaluate the main uncertainties in the technique. Allowing for uncertainties in vertical scaleheight, bar extrapolation, sky subtraction, orientation parameters, and the asymmetry in the spiral arms themselves, we estimate Q_b=0.28\pm0.04 and Q_s=0.21\pm0.06 for NGC 6951. (abridged)
description: 15 pages latex, including 6 postscript figures (Fig. 5 in colour). Revised version submitted to AJ
A Gap Analysis of the Perception of College Teachers and Students towards the LGBT Community
Creators: name: Shally Dabra,
Publisher: name: TuEngr Group
Year: 2021
Subjects: Homosexuality
LGBT
People's perception
Educated people
India
Double-standard society
Gender
Sexual orientation
Believe
Relegion.

description: International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies, 12, 4, 12A4N: 1-10
title: Uninsurable Investment Risks and Capital Income Taxation
Creators: name: Meh, Cesaire
name: Terajima, Yaz
Publisher: name: Bank of Canada
Year: 2009

description: This paper studies the capital accumulation and welfare implications of reducing capital income taxation in a general equilibrium economy with uninsurable investment risks. It has been shown that, with uninsurable investment risks, under-accumulation of capital may result compared to the complete markets economy. We show that reducing somewhat the capital income tax rate increases the capital stock and leads to a welfare gain. The complete elimination of the capital income tax, however, is not necessarily welfare improving.
description: L’étude examine les conséquences, du point de vue du bien-être et de l’accumulation du capital, d’une réduction de l’impôt sur le revenu du capital dans le cadre d’un modèle d’équilibre général où les risques d’investissement ne sont pas assurables. Il a été démontré que la présence de tels risques peut provoquer une sous-accumulation du capital par rapport à ce que l’on observe dans une économie dotée de marchés complets. Les auteurs montrent qu’une réduction modérée du taux d’imposition du revenu du capital a pour effet d’accroître le stock de capital et entraîne une amélioration du bien-être. Cependant, l’élimination totale de l’impôt sur le revenu du capital ne s’accompagne pas nécessairement d’un gain de bien-être.
Lifetimes of noisy repellors
Creators: name: Faisst, H.
name: Eckhardt, B.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We study the effects of additive noise on the lifetimes of chaotic repellors. Using first order perturbation theory we argue that noise will increase the lifetime if the escape holes lie in regions where the unperturbed density is higher than in the immediate vicinity and that it decreases if the density is lower. Numerical experiments support the qualitative conclusions also beyond perturbation theory.
description: 6 pages, 11 figures
Large-scale Software Critical Success Factors: Watch Them Live!
Creators: name: Wajdi Aljedaibi, Sufian Khamis
Publisher: name: TuEngr Group
Year: 2021
Subjects: Large-scale software systems (LSS), Critical Success Factors (CSF), Goal/Question/Metric paradigm (GQM), C#
Measurement, CSF Live, Data Accuracy (DA), Top Management Support (TMS)
Project Management (PM).

description: International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies, 12, 4, 12A4O: 1-7
A note on stochastic dominance and compactness
Creators: name: Nendel, Max
Publisher: name: arXiv
Year: 2019
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60E15, 60B10, 06B23

description: In this work, we discuss completeness for the lattice orders of first and second order stochastic dominance. The main results state that, both, first and second order stochastic dominance induce Dedekind super complete lattices, i.e.~lattices in which every bounded nonempty subset has a countable subset with identical least upper bound and greatest lower bound. Moreover, we show that, if a suitably bounded set of probability measures is directed (e.g.~a lattice), then the supremum and infimum w.r.t.~first or second order stochastic dominance can be approximated by sequences in the weak topology or in the Wasserstein-$1$ topology, respectively. As a consequence, we are able to prove that a sublattice of probability measures is complete w.r.t.~first order stochastic dominance or second order stochastic dominance and increasing convex order if and only if it is compact in the weak topology or in the Wasserstein-$1$ topology, respectively. This complements a set of characterizations of tightness and uniform integrability, which are discussed in a preliminary section.
Comparative Analysis of Maize Storage Structures in Kenya
Creators: name: Nduku, Tabitha M.
name: De Groote, Hugo
name: Nzuma, Jonathan M.
name: Nduku, Tabitha M.
name: De Groote, Hugo
name: Nzuma, Jonathan M.
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agribusiness
subject: Crop Production/Industries
subject: Maize
subject: storage structures
subject: comparative analysis
subject: Kenya

description: This paper assesses the feasibility of the maize storage structures used in Kenya. Maize is the most important staple crop, but produced seasonally, and consumed continuously at farm level, hence the need for on-farm storage. However, heavy post harvest losses occur mainly during harvesting and storage stages and these are a cost to the farmer. A cost benefit analysis was employed to evaluate the viability of ten maize storage structures. The results showed that, apart from the in-house storage and the traditional crib, the benefit-cost ratio (BCR) of the other structures was greater than one. The net present value (NPV) at 15 percent discount rate ranged from KSh 25 to KSh 40 for a kilogram stored in the traditional granary and the metal silo respectively. The internal rate of return (IRR) results were compared to a market interest rate of 15 percent and only the separate structure, improved granary (wicker wall), the basket and the metal silo were feasible with IRRs of 19.3, 23.3, 27.2 and 59.6 percent respectively. The payback period (PBP) ranged from three to 16 months for the metal silo and traditional crib respectively. Sensitivity analysis with a ten percent cost increment and up to 50 percent price reduction showed that only the metal silo was viable although it is the least used maize storage structure. Farmers have an opportunity to shift from the traditional storage methods to upcoming technologies like the metal silo and reduce their maize storage costs and losses.
title: Cross-border Mergers and Hollowing-out
Creators: name: Secrieru, Oana
name: Vigneault, Marianne
Publisher: name: Bank of Canada
Year: 2009

description: The purpose of our paper is to examine the profitability and social desirability of both domestic and foreign mergers in a location-quantity competition model, where we allow for the possibility of hollowing-out of the target firm. We refer to hollowing-out as the situation where the target firm is shut down following a merger with a domestic or foreign acquirer. Our analysis shows that mergers have ambiguous effects on the profitability of merged firms and on social welfare. Hollowing-out occurs in very few instances in our framework. One such instance is the case of firms located side-by-side in the same cluster and only if it is very costly to transfer the more efficient technology of the acquirer to the domestic target firm. This happens regardless of the origin of the acquirer, domestic or foreign. We also show that there are instances when a cross-border merger with hollowing out is not profitable but it is socially desirable.
description: À l'aide d'un modèle de concurrence spatiale fondée sur les quantités, les auteures examinent la rentabilité de fusions menées par des entreprises nationales ou étrangères et leurs retombées sur le bien-être social. Le modèle permet la fermeture de la firme acquise par l'acheteur national ou étranger. Les auteures montrent dans leur analyse les effets mitigés des fusions sur la rentabilité et le bien-être. La fermeture de l'entreprise ne survient que dans un petit nombre de cas à l'intérieur du modèle. L'un de ces cas concerne la situation d'établissements voisins géographiquement et il ne se réalise que si les coûts de transfert de technologies au profit de la firme résidente visée par la fusion sont prohibitifs pour l'acquéreur (peu importe sa nationalité). D'après les auteures, il arrive aussi qu'une fusion transfrontière accompagnée d'une fermeture soit non rentable mais socialement préférable.
First Order Phase Transition in a Reaction-Diffusion Model With Open Boundary: The Yang-Lee Theory Approach
Creators: name: Jafarpour, Farhad H
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: A coagulation-decoagulation model is introduced on a chain of length L with open boundary. The model consists of one species of particles which diffuse, coagulate and decoagulate preferentially in the leftward direction. They are also injected and extracted from the left boundary with different rates. We will show that on a specific plane in the space of parameters, the steady state weights can be calculated exactly using a matrix product method. The model exhibits a first-order phase transition between a low-density and a high-density phase. The density profile of the particles in each phase is obtained both analytically and using the Monte Carlo Simulation. The two-point density-density correlation function in each phase has also been calculated. By applying the Yang-Lee theory we can predict the same phase diagram for the model. This model is further evidence for the applicability of the Yang-Lee theory in the non-equilibrium statistical mechanics context.
description: 10 Pages, 3 Figures, To appear in Journal of Physics A: Mathematical and General
BFKL Dynamics in Jet Evolution
Creators: name: Marchesini, G.
name: Mueller, A. H.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate $e^+e^- \to Q\bar{Q}(k) + anything in a certain momentum, k, region for heavy quark-antiquark (Q\bar{Q})production. In our chosen region we find that the number of heavy quark pairs produced is determined by BFKL dynamics and the energy dependence of the number of pairs is given by $αp-1$ the hard pomeron intercept.
description: 14 pages, Latex, 4 figures
Goodness--of--fit Statistics and CMB Data Sets
Creators: name: Douspis, M.
name: Bartlett, J. G.
name: Blanchard, A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Application of a Goodness--of--fit (GOF) statistic is an essential element of parameter estimation. We discuss the computation of GOF when estimating parameters from anisotropy measurements of the cosmic microwave background (CMB), and we propose two GOF statistics to be used when employing approximate band--power likelihood functions. They are based on an approximate form for the distribution of band--power estimators that requires only minimal experimental information to construct. Monte Carlo simulations of CMB experiments show that the proposed form describes the true distributions quite well. We apply these GOF statistics to current CMB anisotropy data and discuss the results.
description: 7 pages, submitted in June 2001, accepted for publication in Astronomy & Astrophysics in May 2003
Options and Impact of Crop Production Specialization on Small-Scale Farms in the Noth of Burundi
Creators: name: Niragira, S.
name: D'Haese, M.
name: Buysse, Jeroen
name: Desiere, S.
name: Ndimubandi, J.
name: D'Haese, L.
name: Niragira, S.
name: D'Haese, M.
name: Buysse, Jeroen
name: Desiere, S.
name: Ndimubandi, J.
name: D'Haese, L.
Publisher: name: Unknown
Year: 2013
Subjects: subject: Crop Production/Industries
subject: Food Security and Poverty
subject: food security
subject: resource allocation
subject: specialization
subject: small farms
subject: farm production model
subject: Burundi

description: Declining land availability and increasing rural poverty hamper further production growth and agricultural development in Burundi. Yet, over the last decades, food demand continued to increase as a result of high population growth and urbanisation. In a country like Burundi, where it is estimated that 90% of the people live from agriculture for both food supply and income earnings, agricultural specialists urge for a more optimal use of resources in agricultural production as a pathway out of poverty. However, it is difficult to optimize the complex prevailing farming systems without radical changes in farmers’ decision making. Over time, small-scale farmers have developed complex cropping systems that are both intensive and risk averse in response to acute land scarcity and unreliable food markets. This has resulted in high rates of self-reliance among farmers and highly diversified mixed cropping systems. This paper examines the potential and effects of agricultural specialization in optimizing land use and farm production. We use a farm level mathematical programming model which is applied to different farm types. A special feature in this paper is the consideration of minimal household food needs. Simulation results revealed that optimal farm plans differ by farm type as each of them is subject to specific asset endowment constraints. Farmers could improve land use by producing a specific range of crops and benefiting from economies of scale; large farms can significantly increase returns to land, while landless households can benefit from increased returns to labour. However, the reforms require better markets, storage facilities and credit supply mechanisms.
Phosphatidylinositol 3 kinase inhibitor-related pneumonitis: a systematic review and meta-analysis
Creators: name: Zhang, Yi
name: Ma, Zhuo
name: Wang, Yushu
name: Feng, Xin
name: An, Zhuoling
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Marine Biology
subject: Cancer

description: Serious phosphatidylinositol 3 kinase (PI3K) inhibitor-related pneumonitis has raised clinical concerns, and integrated data for this condition are lacking. Randomized controlled trials (RCTs) comparing PI3K inhibitor therapy with control treatments from electronic databases and registrations were searched from inception to 1 April 20231 April 2023seven1 April 2023. The outcomes of our study were the incidence and risk of all-grade and grade ≥ 3 PI3K inhibitor-associated pneumonitis compared with controls. The meta-analysis included 13 studies comprising 3916 patients. The incidence of all-grade and grade ≥ 3 pneumonitis was 3.7% (82/2210) and 3.0% (35/1162) in patients treated with PI3K inhibitors. PI3K inhibitors significantly increased the risk of all-grade and grade ≥ 3 pneumonitis compared with controls (RR 5.63, 95% CI [2.97, 10.65], P < 0.00001; RR 6.85, 95% CI [2.45, 19.11], P = 0.0002, respectively) with no significant heterogeneity across studies. In terms of different PI3K inhibitors, copanlisib and idelalisib significantly increased the risk of pneumonitis compared to controls (RR 4.99, 95% CI [1.19, 21.01], P = 0.03; RR 5.53, 95% CI [2.35, 13.01], P < 0.0001, respectively). PI3K inhibitors significantly increased the risk of pneumonitis compared with controls, and most cases are severe or even life-threatening. CRD42022318878
Vortex dynamics in evolutive flows: a weakly chaotic phenomenon
Creators: name: Bellazzini, Jacopo
name: Menconi, Giulia
name: Buresti, Guido
name: Grigolini, Paolo
name: Ignaccolo, Massimiliano
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the vortex dynamics in an evolutive flow. We carry out the statistical analysis of the resulting time series by means of the joint use of a compression and an entropy diffusion method. This approach to complexity makes it possible for us to establish that the time series emerging from the wavelet analysis of the vortex dynamics is a weakly chaotic process driven by a hidden dynamic process. The complexity of the hidden driving process is shown to be located at the border between the stationary and non-stationary state.
description: 23 pages, latex source,7 figures
Food Security and Vulnerability in Drought Prone Northern State of Nigeria: An Assessment of Three Communities in Northwestern Nigeria
Creators: name: Lawal, Nuruddeen Mohammed
name: Lawal, Nuruddeen Mohammed
Publisher: name: Unknown
Year: 2013
Subjects: Food Security and Poverty

description: The food security situation in drought prone areas of Sokoto, Kebbi and Zamfara States were assessed in this paper. The primary data obtained from the interviewed households was based on a designed structured questionnaire and random selection of the households. Descriptive statistics was used to analysed the socio-economic and demographic data of the households, while regression analysis was used to determine the food security and insecurity status of the households by using Global and Nigerian Bench marks provided by FAO. The results of the study have shown that households size, level of education as well as per capita income have significant effect on status of food security in the study areas. Recommendations were also offered towards achieving food security in the affected areas for national development.
From Free Fields to $AdS$
Creators: name: Gopakumar, Rajesh
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Free ${\cal N}=4$ Super Yang-Mills theory (in the large $N$ limit) is dual to an, as yet, intractable closed string theory on $AdS_5\times S^5$. We aim to implement open-closed string duality in this system and thereby recast the free field correlation functions as amplitudes in $AdS$. The basic strategy is to implement this duality directly on planar field theory correlation functions in the worldline (or first quantised) formulation. The worldline loops (remnants of the worldsheet holes) close to form tree diagrams. These tree diagrams are then to be manifested as tree amplitudes in $AdS$ by a change of variables on the worldline moduli space (i.e. Schwinger parameter space). Restricting to twist two operators, we are able to carry through this program for two and three point functions. However, it appears that this strategy can be implemented for four and higher point functions as well. An analogy to electrical networks is very useful in this regard.
description: 35 pages, 4 figures; v2: references added
title: Real Time Detection of Structural Breaks in GARCH Models
Creators: name: He, Zhongfang
name: Maheu, John M.
Publisher: name: Bank of Canada
Year: 2009

description: A sequential Monte Carlo method for estimating GARCH models subject to an unknown number of structural breaks is proposed. Particle filtering techniques allow for fast and efficient updates of posterior quantities and forecasts in real time. The method conveniently deals with the path dependence problem that arises in these type of models. The performance of the method is shown to work well using simulated data. Applied to daily NASDAQ returns, the evidence favors a partial structural break specification in which only the intercept of the conditional variance equation has breaks compared to the full structural break specification in which all parameters are subject to change. The empirical application underscores the importance of model assumptions when investigating breaks. A model with normal return innovations results in strong evidence of breaks; while more flexible return distributions such as t-innovations or a GARCH-jump mixture model still favors breaks but indicates much more uncertainty regarding the time and impact of them.
description: Pour estimer les modèles GARCH susceptibles de compter un nombre indéterminé de ruptures structurelles, les auteurs proposent une méthode séquentielle de Monte-Carlo. Celle-ci fait appel à des techniques de filtrage particulaire qui permettent l'actualisation rapide et efficace de valeurs postérieures et de prévisions en temps réel. Cette méthode apporte une solution commode au problème de la dépendance du sentier, présent dans les modèles GARCH. Elle fonctionne bien lorsque les données utilisées sont issues de simulations. Appliquée aux rendements quotidiens des titres du NASDAQ, elle fournit des résultats qui avantagent plus une spécification où les ruptures ne concernent que l'ordonnée de l'équation de la variance conditionnelle qu'une spécification dans laquelle l'ensemble des paramètres sont variables. Cette application empirique fait ressortir l'importance revêtue par les hypothèses de modélisation pour l'étude des ruptures. Dans un modèle où les rendements sont soumis à des chocs distribués selon une loi normale, les données obtenues confirment l'existence de ruptures. Ces dernières se retrouvent également dans les distributions plus souples, c'est-à-dire en présence de chocs distribués selon une loi de Student, ou dans un modèle GARCH mixte avec processus de saut; seulement, la date et l'incidence des ruptures font alors l'objet d'une incertitude bien plus grande.
Regional Economic Security in Innovative Digital Environment of Russia
Creators: name: Vlasov, Maxim V.
Publisher: name: TuEngr Group
Year: 2021
Subjects: Digital economy
Economic security
Correlation analysis
Socio-economic development differentiation
Information and communication technologies
Internet
Technology risk
Economic dynamics
Uncertainty
Decision-making.

description: International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies, 12, 4, 12A4P: 1-11
Universal relationship between low-energy antiferromagnetic fluctuations and superconductivity in BaFe$_{2}$(As$_{1-x}$P$_{x}$)$_{2}$
Creators: name: Kitagawa, Shunsaku
name: Kawamura, Takeshi
name: Ishida, Kenji
name: Mizukami, Yuta
name: Kasahara, Shigeru
name: Shibauchi, Takasada
name: Terashima, Takahito
name: Matsuda, Yuji
Publisher: name: arXiv
Year: 2019
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: To identify the key parameter for optimal superconductivity in iron pnictides, we measured the $^{31}$P-NMR relaxation rate on BaFe$_{2}$(As$_{1-x}$P$_{x}$)$_{2}$ ($x = 0.22$ and 0.28) under pressure and compared the effects of chemical substitution and physical pressure. For $x = 0.22$, structural and antiferromagnetic (AFM) transition temperatures both show minimal changes with pressure up to 2.4~GPa, whereas the superconducting transition temperature $T_{\rm c}$ increases to twice its former value. In contrast, for $x=0.28$ near the AFM quantum critical point (QCP), the structural phase transition is quickly suppressed by pressure and $T_{\rm c}$ reaches a maximum. The analysis of the temperature-dependent nuclear relaxation rate indicates that these contrasting behaviors can be quantitatively explained by a single curve of the $T_{\rm c}$ dome as a function of Weiss temperature $θ$, which measures the distance to the QCP. Moreover, the $T_{\rm c}$-$θ$ curve under pressure precisely coincides with that with chemical substitution, which is indicative of the existence of a universal relationship between low-energy AFM fluctuations and superconductivity on BaFe$_{2}$(As$_{1-x}$P$_{x}$)$_{2}$.
description: 5 pages, 6 figures
Orodaliscoides Schmidt 1913
Creators: name: Dellacasa, Marco
name: Dellacasa, Giovanni
name: Gordon, Robert D.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Aphodiidae
Orodaliscoides

description: Genus Orodaliscoides Schmidt, 1913
 Aphodius (Orodaliscoides) Schmidt, 1913: 145; 1922: 195; Dellacasa 1988: 388; Dellacasa and Gordon 1997: 368.
 Orodaliscoides; Dellacasa et al. 2001: 215; Smith and Skelley 2007: 27
 Type species. Aphodius rugosiceps Harold, 1859 (subsequent designation of Dellacasa 1988: 388).
 Description. Medium size species (length 5.0-8.0 mm); elongate, convex, shiny, glabrous or nearly glabrous. Brownish-red or brownish-yellow with paler elytra. Head with epistome gibbous, coarsely punctured; clypeus anteriorly subtruncate or feebly sinuate at middle, round at sides, rather thickly bordered, edge upturned, glabrous or ciliate; genae obtusely round, elongately ciliate, protruding from the eyes; frontal suture distinct, not tuberculate. Pronotum transverse, strongly convex, regularly rather densely punctured; lateral margins arcuate, bordered, edge elongately ciliate; hind angles round or obtusely round; base distinctly bordered. Scutellum small, triangular. Elytra elongate, convex; epipleural carina elongately ciliate; striae deep, not or feebly crenulate; interstriae moderately convex; sparsely but distinctly punctured, sometimes sparsely pubescent laterally and toward apex. Fore tibiae with four or three distal teeth and proximally faintly serrulate on outer margin; upper side smooth. Middle and hind tibiae with many long yellowish setae on outer face and inner margin, and with strong transverse carinae on outer face; fimbriate with apical spinules rather stout, irregularly or alternately unequal. Middle and hind tarsi with many very elongate setae on apex of each segment. Pygidium finely, irregularly and sparsely granulose, each granule with a recumbent and irregularly elongate seta; its apical margin with few, dense and moderately elongate cilia. Sexual dimorphism shown in males by fore tibiae spur stouter and obtusely truncate apically; by relatively more sparse punctation of pronotum; sometimes by inferior spur of middle tibiae apically truncate, as well as by apical margin of hind tibiae denticulate before inferior spur; by metasternal plate more distinctly grooved. Aedeagus with paramera strongly curved and acuminate apically. Epipharynx widely transverse; anterior margin inwardly arcuate and with a belt of strong spinules; epitorma conical and elongate, basally widened; corypha more or less strongly prominent, with two median spiculae, sometimes lacking, and with an apical clump of short celtes; pedia pubescent with rather elongate spines immixed; chaetopariae rather dense and elongate.
description: Published as part of Dellacasa, Marco, Dellacasa, Giovanni & Gordon, Robert D., 2012, Systematic revision of the genus Orodaliscoides Schmidt, 1913 (Coleoptera: Scarabaeidae: Aphodiinae), pp. 1-9 in Insecta Mundi 2012 (269) on page 2, DOI: 10.5281/zenodo.5175668
title: Optimal Monetary Policy during Endogenous Housing-Market Boom-Bust Cycles
Creators: name: Tomura, Hajime
Publisher: name: Bank of Canada
Year: 2009

description: This paper uses a small-open economy model for the Canadian economy to examine the optimal Taylor-type monetary policy rule that stabilizes output and inflation in an environment where endogenous boom-bust cycles in house prices can occur. The model shows that boom-bust cycles in house prices emerge when credit-constrained mortgage borrowers expect that future house prices will rise and this expectation is neither shared by savers nor realized ex-post. These boom-bust cycles replicate the stylized features of housing-market boom-bust cycles in industrialized countries. In an environment where mortgage borrowers are occasionally over-optimistic, the central bank should be less responsive to inflation, more responsive to output, and slower to adjust the nominal policy interest rate. This optimal monetary policy rule dampens endogenous boom-bust cycles in house prices, but prolongs inflation target horizons due to weak policy reactions to inflation fluctuations after fundamental shocks.
description: Dans le cadre d'un modèle de petite économie ouverte se prêtant à l'étude de l'économie canadienne, l'auteur examine la règle de Taylor optimale qui permet de stabiliser la production et l'inflation en présence de cycles endogènes d'envolée et d'effondrement des prix de l'immobilier résidentiel. Le modèle montre que de tels cycles peuvent émerger si les emprunteurs hypothécaires ayant un accès limité au crédit s'attendent à une hausse des prix des maisons mais que ces attentes ne sont pas partagées par les épargnants et sont déçues par la suite. Ces cycles d'envolée et d'effondrement sont conformes, dans les grandes lignes, aux cycles d'essor et de contraction du marché du logement dans les pays industrialisés. Lorsque les emprunteurs hypothécaires sont à l'occasion exagérément optimistes, la banque centrale devrait réagir moins aux variations de l'inflation et davantage à celles de la production, et modifier moins rapidement le taux d'intérêt directeur nominal. Cette règle de politique monétaire optimale atténue les cycles endogènes d'envolée et d'effondrement des prix des maisons, mais elle a pour effet d'allonger l'horizon nécessaire pour ramener l'inflation au taux visé, puisque la politique monétaire réagit faiblement aux fluctuations de l'inflation après un choc fondamental.
Monopoles in Abelian Polyakov gauge and projection (in)dependence of the dual superconductor mechanism of confinement
Creators: name: Chernodub, M. N.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss the effect of the choice of an Abelian projection on the dual superconductor mechanism of confinement in SU(2) gluodynamics. Using qualitative arguments we show that the dual superconductor Lagrangian corresponding to the Abelian Polyakov gauge has a different structure compared to the dual Lagrangian in the Maximal Abelian gauge. A difference between these Lagrangians reflects the fact that in continuum limit the monopoles should be static in the Abelian Polyakov gauge and therefore these monopoles can not give rise to the confinement of static quarks. Using the Abelian Polyakov gauge as an example, we show that (i) the dual superconductor scenario of confinement may depend on the Abelian projection; (ii) the condensation of the Abelian monopoles - which may be realized in any Abelian projection - is necessary but not sufficient condition for confinement. These results do not exclude an existence of a class of Abelian gauges in which the dual superconductor scenario works well.
description: 12 pages, LaTeX2e
title: How Changes in Oil Prices Affect the Macroeconomy
Creators: name: DePratto, Brian
name: De Resende, Carlos
name: Maier, Philipp
Publisher: name: Bank of Canada
Year: 2009

description: We estimate a New Keynesian general-equilibrium open economy model to examine how changes in oil prices affect the macroeconomy. Our model allows oil price changes to be transmitted through temporary demand and supply channels (affecting the output gap), as well as through persistent supply side effects (affecting trend growth). We estimate this model for Canada, the United Kingdom, and the United States over the period 1971-2008, and find that it matches the data very well in terms of first and second moments. We conclude that (i) energy prices affect the economy primarily through the supply side, whereas we do not find substantial demand-side effects; (ii) higher oil prices have temporary negative effects on both the output gap and on trend growth, which translates into a permanent reduction in the level of potential and actual output. Also, results for the United States indicate that oil supply shocks have more persistent negative effects on trend growth than oil demand shocks. These effects are statistically significant; however, our simulations also indicate that the effects are economically small.
description: Les auteurs analysent l'incidence macroéconomique des mouvements de prix du pétrole au moyen d'un modèle d'équilibre général en économie ouverte inspiré de la nouvelle économie keynésienne. Dans le modèle, l'évolution du prix de l'or noir peut avoir aussi bien des effets temporaires sur l'écart de production (par le canal de la demande ou de l'offre) que des effets persistants sur la croissance tendancielle (par le truchement de l'offre). Le modèle, qui est estimé pour le Canada, les États-Unis et le Royaume-Uni sur la période 1971-2008, reproduit très bien les données étudiées, en particulier les moments de premier et de second ordre. Deux conclusions se dégagent du travail des auteurs : 1) les prix de l'énergie se répercutent sur l'économie essentiellement par le canal de l'offre; 2) la hausse des cours pétroliers a des retombées négatives transitoires tant sur l'écart de production que sur la croissance tendancielle, lesquelles se traduisent par une baisse permanente du niveau de production (potentielle comme effective). Aux États-Unis, il semble que les variations de l'offre de pétrole exercent sur la croissance tendancielle des effets négatifs plus persistants que celles de la demande d'or noir. Ces effets sont statistiquement significatifs, mais les simulations réalisées indiquent qu'ils sont de faible ampleur du point de vue économique.
Relaxation and Zeno effect in qubit measurements
Creators: name: Gurvitz, S. A.
name: Fedichkin, L.
name: Mozyrsky, D.
name: Berman, G. P.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Condensed Matter (cond-mat)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider a qubit interacting with its environment and continuously monitored by a detector represented by a point contact. Bloch-type equations describing the entire system of the qubit, the environment and the detector are derived. Using these equations we evaluate the detector current and its noise spectrum in terms of the decoherence and relaxation rates of the qubit. Simple expressions are obtained that show how these quantities can be accurately measured. We demonstrate that due to interaction with the environment, the measurement can never localize a qubit even for infinite decoherence rate.
description: some clarifications added, to appear in Phys. Rev. Lett
Neutrinos from the pulsar wind nebulae
Creators: name: Bednarek, W.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In the recent paper we calculated the $γ$-ray spectra from pulsar wind nebulae (PWNe), assuming that a significant amount of the pulsar rotational energy is converted into relativistic nuclei. These nuclei accelerate leptons which are responsible for most of the observed electromagnetic emission from PWNe. Small part of nuclei also interact with the matter of the supernova producing $γ$-rays, which can also contribute to the observed spectra of young nebulae. Here we calculate the spectra of neutrinos from the interaction of nuclei inside the nebula and the expected neutrino event rates in the 1 km$^2$ neutrino detector from: the Crab Nebula (PSR 0531+21), the Vela SNR (PSR 0833-45), G 343.1-2.3 (PSR 1706-44), MSH15-52 (PSR 1509-58), 3C58 (PSR J0205+6449), and CTB80 (PSR 1951+32). It is shown that only the Crab Nebula can produce the neutrino event rate above the sensitivity limit of the 1 km$^2$ neutrino detector, provided that nuclei take most of the rotational energy lost by the pulsar. The neutrino event rate expected from the Vela SNR is comparable to that from the Crab Nebula but these neutrinos are less energetic and emitted from a much larger region on the sky. Therefore it may be difficult to subtract the Vela SNR signal from the higher background of the atmospheric neutrinos.
description: 7 pages, 3 figures, A&A style, accepted to A&A