cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A catalogue of open cluster radii determined from Gaia proper motions
Creators: name: Sanchez, Nestor
name: Alfaro, Emilio
name: Lopez-Martinez, Fatima
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In this work we improve a previously published method to calculate in a reliable way the radius of an open cluster. The method is based on the behaviour of stars in the proper motion space as the sampling changes in the position space. Here we describe the new version of the method and show its performance and robustness. Additionally, we apply it to a large number of open clusters using data from Gaia DR2 to generate a catalogue of 401 clusters with reliable radius estimations. The range of obtained apparent radii goes from Rc=1.4+-0.1 arcmin (for the cluster FSR 1651) to Rc=25.5+-3.5 arcmin (for NGC~2437). Cluster linear sizes follow very closely a lognormal distribution with a mean characteristic radius of Rc=3.7 pc, and its high radius tail can be fitted by a power law as N \propto Rc^(-3.11+-0.35). Additionally, we find that number of members, cluster radius and age follow the relationship Nc \propto Rc^(1.2+-0.1) Tc^(-1.9+-0.4) where the younger and more extensive the cluster, the more members it presents. The proposed method is not sensitive to low density or irregular spatial distributions of stars and, therefore, is a good alternative or complementary procedure to calculate open cluster radii not having previous information on star memberships.
description: 13 pages including 9 figures and 2 tables (main table will be available online). Accepted for publication in MNRAS
Polarobreathers in soft potentials
Creators: name: Cuevas, J.
name: Kevrekidis, P. G.
name: Frantzeskakis, D. J.
name: Bishop, A. R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We consider polarons in models of coupled electronic and vibrational degrees of freedom, in the presence of a soft nonlinear inter-particle potential (Morse potential). In particular, we focus on a a bound state of a polaron with a breather, a so-called ``polarobreather''. We analyze the existence of this branch based on frequency resonance conditions and illustrate its stability using Floquet spectrum techniques. Multi-site solutions of this type are also obtained both in the stationary case (two-site polarons) and in the breathing case (two-site polarobreathers). We also obtain a different branch of solutions, namely a polaronic nanopteron.
description: 7 pages, 10 figures
AnchorFace: An Anchor-based Facial Landmark Detector Across Large Poses
Creators: name: Xu, Zixuan
name: Li, Banghuai
name: Geng, Miao
name: Yuan, Ye
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Facial landmark localization aims to detect the predefined points of human faces, and the topic has been rapidly improved with the recent development of neural network based methods. However, it remains a challenging task when dealing with faces in unconstrained scenarios, especially with large pose variations. In this paper, we target the problem of facial landmark localization across large poses and address this task based on a split-and-aggregate strategy. To split the search space, we propose a set of anchor templates as references for regression, which well addresses the large variations of face poses. Based on the prediction of each anchor template, we propose to aggregate the results, which can reduce the landmark uncertainty due to the large poses. Overall, our proposed approach, named AnchorFace, obtains state-of-the-art results with extremely efficient inference speed on four challenging benchmarks, i.e. AFLW, 300W, Menpo, and WFLW dataset. Code will be available at https://github.com/nothingelse92/AnchorFace.
description: To appear in AAAI 2021
The Interplay of Regulation and Marketing Incentives in Providing Food Safety
Creators: name: Ollinger, Michael
name: Moore, Danna L.
name: Ollinger, Michael
name: Moore, Danna L.
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: Food Consumption/Nutrition/Food Safety
subject: Institutional and Behavioral Economics
subject: food safety
subject: process regulations
subject: Hazard Analysis and Critical Control Point (HACCP) rule
subject: food safety regulations

description: This report examines the impact of process regulations mandated under the Pathogen Reduction/Hazard Analysis and Critical Control Point (PR/HACCP) rule by the Food Safety and Inspection Service of USDA on food safety process control. The current level of food safety found in U.S. meat and poultry food products is a result of process and performance regulations and management-determined actions brought about by market incentives. Processing regulations include sanitation and other tasks related to food safety; management-determined actions include capital investment and other actions independent of process regulations, but possibly driven by performance standards. Performance standards—regulations that allow manufacturers to reach an acceptable level of food safety in any manner they see fit—are not a subject of this report. This study used the share of samples testing positive for Salmonella spp. as a measure of food safety process control in meat and poultry processing plants and found empirically that management-determined actions account for about two-thirds of the reduction in samples testing positive for Salmonella spp., while process regulations account for about a third of the reduction. The importance of process regulation varies, but accounts for 50 percent or more of process control in about a quarter of plants, and in some plants accounts for the entire process control system.
Economic Aspects of Revenue-Based Commodity Support
Creators: name: Cooper, Joseph C.
name: Cooper, Joseph C.
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Demand and Price Analysis
subject: Financial Economics
subject: Domestic commodity support
subject: revenue-based support
subject: marketing loan benefits
subject: countercyclical payments
subject: disaster assistance
subject: Federal crop insurance

description: Interest in revenue-based commodity support is evident in the Food, Conservation and Energy Act of 2008 (the 2008 Farm Bill), which gives eligible producers the option of participating in the Average Crop Revenue Election (ACRE) program in return for reductions and eliminations of payments under more traditional programs. This report examines how the uncertainty in U.S. domestic commodity support payments for corn may differ between traditional-style approaches (defined as price-based payments plus yield-based disaster payments) to support and two revenue-based support scenarios. Variability around the total expected annual payment was found to be lower under revenue-based support, as was the probability of high payments. These results suggest potential advantages to this type of support, both in terms of lower budgetary uncertainty for the Federal Government and in better ensuring that agricultural support outlays stay below a certain ceiling. In addition, the volatility of corn revenue was found to be lower in almost all corn producing counties under the revenue-based alternatives than under the traditional price-based approaches.
Pentagon contact representations
Creators: name: Felsner, Stefan
name: Schrezenmaier, Hendrik
name: Steiner, Raphael
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Geometry (cs.CG)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: 05C62, 68R10

description: Representations of planar triangulations as contact graphs of a set of internally disjoint homothetic triangles or of a set of internally disjoint homothetic squares have received quite some attention in recent years. In this paper we investigate representations of planar triangulations as contact graphs of a set of internally disjoint homothetic pentagons. Surprisingly such a representation exists for every triangulation whose outer face is a 5-gon. We relate these representations to five color forests. These combinatorial structures resemble Schnyder woods and transversal structures, respectively. In particular there is a bijection to certain alpha-orientations and consequently a lattice structure on the set of five color forests of a given graph. This lattice structure plays a role in an algorithm that is supposed to compute a contact representation with pentagons for a given graph. Based on a five color forest the algorithm builds a system of linear equations and solves it, if the solution is non-negative, it encodes distances between corners of a pentagon representation. In this case the representation is constructed and the algorithm terminates. Otherwise negative variables guide a change of the five color forest and the procedure is restarted with the new five color forest. Similar algorithms have been proposed for contact representations with homothetic triangles and with squares.
Submicrometer position control of single trapped neutral atoms
Creators: name: Dotsenko, I.
name: Alt, W.
name: Khudaverdyan, M.
name: Kuhr, S.
name: Meschede, D.
name: Miroshnychenko, Y.
name: Schrader, D.
name: Rauschenbeutel, A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We optically detect the positions of single neutral cesium atoms stored in a standing wave dipole trap with a sub-wavelength resolution of 143 nm rms. The distance between two simultaneously trapped atoms is measured with an even higher precision of 36 nm rms. We resolve the discreteness of the interatomic distances due to the 532 nm spatial period of the standing wave potential and infer the exact number of trapping potential wells separating the atoms. Finally, combining an initial position detection with a controlled transport, we place single atoms at a predetermined position along the trap axis to within 300 nm rms.
description: 4 pages, 4 figures
Acoustic Anomaly Detection for Machine Sounds based on Image Transfer Learning
Creators: name: Müller, Robert
name: Ritz, Fabian
name: Illium, Steffen
name: Linnhoff-Popien, Claudia
Publisher: name: arXiv
Year: 2020
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Sound (cs.SD)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: In industrial applications, the early detection of malfunctioning factory machinery is crucial. In this paper, we consider acoustic malfunction detection via transfer learning. Contrary to the majority of current approaches which are based on deep autoencoders, we propose to extract features using neural networks that were pretrained on the task of image classification. We then use these features to train a variety of anomaly detection models and show that this improves results compared to convolutional autoencoders in recordings of four different factory machines in noisy environments. Moreover, we find that features extracted from ResNet based networks yield better results than those from AlexNet and Squeezenet. In our setting, Gaussian Mixture Models and One-Class Support Vector Machines achieve the best anomaly detection performance.
description: ICAART 2021, 8 pages, 2 figures, 1 table
Gauged $U(1)_R$ Symmetries and Fayet-Iliopoulos Terms in 5D Orbifold Supergravity
Creators: name: Abe, Hiroyuki
name: Choi, Kiwoon
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss a gauged $U(1)_R$ supergravity on five-dimensional (5D) orbifold ($S^1/Z_2$) in which both a $Z_2$-even U(1) gauge field and the $Z_2$-odd graviphoton take part in the $U(1)_R$ gauging. Based on the off-shell formulation of 5D supergravity, we analyze the structure of Fayet-Iliopoulos (FI) terms allowed in such model. Introducing a $Z_2$-even $U(1)_R$ gauge field accompanies new bulk and boundary FI terms in addition to the known integrable boundary FI term which could be present in the absence of any gauged $U(1)_R$ symmetry. Some physical consequences of these new FI terms are examined.
description: 1+17 pages, 9 figures, typeset in JHEP style
title: Characterising and understanding trends and variability in African rainfall seasonality
Creators: name: Dunning, Caroline M.
Publisher: name: University of Reading
Year: 2018

description: Seasonal rainfall over Africa is critical for rain-fed agriculture, domestic water use, energy production and health. Thus, variability and change in precipitation patterns can potentially inflict socio-economic damage, exacerbated by the low adaptive capacity in many countries. This thesis aims to characterise and interpret the seasonality of rainfall over Africa and its changes over time to improve capability for robust, societally relevant projections of future climatic change over Africa. An objective methodology is developed to quantify the seasonal regime and timing across continental Africa, applicable to both models and observations. Compatibility with known physical drivers of African rainfall, consistency with indigenous methods, and generally strong agreement between satellite-based rainfall datasets confirm that the method realistically captures the seasonal progression of rainfall. Present day seasonality and the role of the El Ni˜no Southern Oscillation are characterised. Examination of the representation of African rainfall seasonality in the CMIP5 climate models reveals deficiencies in some regions. These include timing biases over the Horn of Africa (long rains 20 days late on average) and an unrealistic seasonal regime over the southern West African coastline, with a failure to capture the agriculturally important Little Dry Season. Further analysis using targeted climate model simulations indicates that the misrepresentation of the biannual regime is related to Atlantic sea surface temperature biases. Over much of the continent it is found that the CMIP5 models accurately capture the seasonal cycle in rainfall, which adds credence for future projected changes in seasonality. Assessment of future changes in wet season characteristics under RCP4.5 and RCP8.5 scenarios indicates significant projected changes in several regions of Africa. A delay in the wet season over West Africa and the Sahel of over 5-10 days on average and later onset of the wet season over Southern Africa is identified. This is linked with increasing strength of the Saharan Heat Low in late boreal summer and a northward shift in the rain belt over August-December. Average rainfall per rainy day is projected to increase, while the number of rainy days in the wet season declines in regions of stable or declining rainfall (West and Southern Africa) while remaining unchanged in Central Africa where rainfall is projected to increase. Identified changes in seasonal rainfall characteristics over Africa have implications for crop yields, water supplies, and urban flooding, requiring adaptation strategies to reduce potentially detrimental consequences.
Dwarf Novae with Newly Determined Parallaxes: Model Analyses of VY Aquari, RU Pegasi, and T Leonis
Creators: name: Hamilton, R. T.
name: Sion, E. M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using newly determined parallaxes for dwarf novae, we have derived outburst accretion rates for VY Aqr, RU Peg and T Leo and for T Leo during quiescence. The two short-period dwarf novae, VY Aqr and T Leo, show good agreement with optically thick steady-state accretion disks in outburst, whereas RU Peg shows a significant departure from a steady-state disk. We have determined that the white dwarf in T Leo has T$_{eff} = 16,000 \pm 1000$ K, a value consistent with long term compressional heating when gravitational wave emission drives mass transfer. The white dwarf in T Leo has a temperature in the same narrow range as other WZ Sge-like dwarf novae.
description: The paper will apear in the October, 2004 issue of PASP
The WIC Program: Background, Trends, and Economic Issues, 2009 Edition
Creators: name: Oliveira, Victor
name: Frazao, Elizabeth
name: Oliveira, Victor
name: Frazao, Elizabeth
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: Consumer/Household Economics
subject: Food and Nutrition Assistance Programs
subject: Special Supplemental Nutrition Program for Women
subject: Infants
subject: and Children
subject: WIC
subject: administrative-based issues
subject: outcomebased issues

description: The mission of the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) is to safeguard the health of low-income women, infants, and children through age 4 who are at nutritional risk. WIC provides nutritious foods to supplement diets, nutrition education, and referrals to health care and other social services. Administered by USDA’s Food and Nutrition Service (FNS), almost half of all infants and about a quarter of all children ages 1-4 in the United States participate in the program. WIC is USDA’s third-largest food and nutrition assistance program, accounting for 10 percent of total Federal spending on food and nutrition assistance. This report describes the WIC program—how it works, its history, program trends, and the characteristics of the population it serves. It also examines current issues facing WIC, focusing mainly on those with important economic implications.
Local characterization and engineering of proximitized correlated states in graphene-NbSe$_2$ vertical heterostructures
Creators: name: Zhang, Zhiming
name: Watanabe, Kenji
name: Taniguchi, Takashi
name: LeRoy, Brian J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Using a van der Waals vertical heterostructure consisting of monolayer graphene, monolayer hBN and NbSe$_2$, we have performed local characterization of induced correlated states in different configurations. At a temperature of 4.6 K, we have shown that both superconductivity and charge density waves can be induced in graphene from NbSe2 by proximity effects. By applying a vertical magnetic field, we imaged the Abrikosov vortex lattice and extracted the coherence length for the proximitized superconducting graphene. We further show that the induced correlated states can be completely blocked by adding a monolayer hBN between the graphene and the NbSe$_2$, which demonstrates the importance of the tunnel barrier and surface conditions between the normal metal and superconductor for the proximity effect.
description: 7 pages, 5 figures
FALSAFAGA NAZAR YOXUD FALSAFADA BAXT TUSHUNCHASI
Creators: name: Raximova  Marjona
Publisher: name: Zenodo
Year: 2024

description: Dunyo taraqqiyoti shuni ko’rsatadiki, jamiyat va hayotning boshlanishi insoniyat tarixida qanchalik muhim hodisa bo’lsa, falsafaning shakllanishi bu taraqqiyotning asosiy bo’g’inidir. Ushbu  maqolada ham bu tarixning va falsafaning fikrlash jarayoniga ta’siri qay darajada ekanini yoritishga harakat qilindi.

Kalit so’zlar: baxt, pul, falsafa, ayol, borliq, hayot, ayol, san’at, teatr, qalb, qonuniyat, dunyoqarash,
Generalized Number Theoretic Spin Chain-Connections to Dynamical Systems and Expectation Values
Creators: name: Fiala, Jan
name: Kleban, Peter
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Number Theory (math.NT)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 11Z05, 82B26, 82B27, 82B28

description: We generalize the number theoretic spin chain, a one-dimensional statistical model based on the Farey fractions, by introducing a new parameter x>=0. This allows us to write recursion relations in the length of the chain. These relations are closely related to the Lewis three-term equation, which is useful in the study of the Selberg ζ-function. We then make use of these relations and spin orientation transformations. We find a simple connection with the transfer operator of a model of intermittency in dynamical systems. In addition, we are able to calculate certain spin expectation values explicitly in terms of the free energy or correlation length. Some of these expectation values appear to be directly connected with the mechanism of the phase transition.
description: 14 pp., Revtex4
Research on Dairy Consumption of Rural Residents in Yanqing District of Beijing
Creators: name: GAO Huidong
name: CHEN Rao
name: YANG Weimin
name: ZHANG Shilong
name: GAO Huidong
name: CHEN Rao
name: YANG Weimin
name: ZHANG Shilong
Publisher: name: Unknown
Year: 2020
Subjects: subject: Agribusiness
subject: Rural residents, Dairy consumption, Consumption behavior, Influencing factors

description: Taking the rural residents in Yanqing District of Beijing City as the research object, through field investigations and interviews, it is found that the main characteristics of consumers, income and expenditure level, preference and cognitive level are the factors that affect the dairy consumption behavior of rural residents. Using the bivariate regression model for empirical analysis, it is concluded that rural residents' occupation, monthly average income, purchase expenditure and attitude towards dairy safety have a significant impact on rural residents' dairy consumption behavior, and then relevant constructive suggestions are put forward to guide rural residents' balanced consumption.
Measuring Public Agricultural Research Capital and Its Contribution to State Agricultural Productivity
Creators: name: Huffman, Wallace E.
name: Huffman, Wallace E.
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Productivity Analysis
subject: Research and Development/Tech Change/Emerging Technologies
subject: Research capital
subject: agriculture
subject: states
subject: measurement
subject: productivity decomposition
subject: TFP

description: A methodology for measuring public agricultural research capital is developed and described for the first time, new public agricultural research capital measures for each of the 48 contiguous US states, 1970-1999, are presented, and a new econometric analysis of the contribution of public agricultural research capital to state agricultural productivity is reported. Public agricultural research capital across the states is shown to have five different growth patterns, only one of which is at a constant rate. New TFP results show that public agricultural research capital contributes significantly to agricultural productivity and is larger than previous estimates. Intrastate and spillin public agricultural research capital are shown to be complementary, but private agricultural research capital and public extension are substitutes. The marginal social rate of return to public agricultural, including significant interstate spillovers, is large which has science policy implications.
The Cuba Library
Creators: name: Hahn, T.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Concepts and implementation of the Cuba library for multidimensional numerical integration are elucidated.
description: 6 pages. Talk given at the X International Workshop on Advanced Computing and Analysis Techniques in Physics Research, ACAT 2005, DESY-Zeuthen, Germany, 22-27 May 2005
Rural Labor and Long Recall Loss
Creators: name: Ambler, Kate
name: Herskowitz, Sylvan
name: Maredia, Mywish K.
name: Ambler, Kate
name: Herskowitz, Sylvan
name: Maredia, Mywish K.
Publisher: name: Unknown
Year: 2021
Subjects: subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: Consumer/Household Economics
subject: Labor and Human Capital
subject: survey experiment
subject: rural labor supply
subject: employment
subject: seasonality
subject: recall bias
subject: Malawi

description: Commonly used data collection practices use annual recall to capture individuals’ labor activities over a year. However, long recall periods are likely to suffer from distortions and loss, particularly when work patterns are seasonal and informal. In a panel of rural households in Malawi, we use a survey experiment to test the effect of using long recall periods on the reported number of labor activities, labor supply, and types of work relative to those resulting from a set of shorter, quarterly interviews. We document large losses from the longer recall window, particularly on the extensive margin of labor supply with reductions of over 20%. These losses are greatest for periods furthest from the last survey round and are especially large among individuals whose labor supply is being reported for them, reaching as high as 50% losses for some outcomes. The composition of households’ primary respondents, predominantly male and older, as well as differential effects by age both suggest that use of long recall may lead to meaningful biases by both age and gender in resulting data.
Chiral Interface States and Related Quantized Transport in Disordered Chern Insulators
Creators: name: Zhang, Zhi-Qiang
name: Chen, Chui-Zhen
name: Wu, Yijia
name: Jiang, Hua
name: Liu, Junwei
name: Sun, Qing-feng
name: Xie, X. C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: In this Letter, we study an Anderson-localization-induced quantized transport in disordered Chern insulators (CIs). By investigating the disordered CIs with a step potential, we find that the chiral interface states emerge along the interfaces of the step potential, and the energy range for such quantized transport can be manipulated through the potential strength. Furthermore, numerical simulations on cases with a multi-step potential demonstrate that such chiral state can be spatially shifted by varying the Fermi energy, and the energy window for quantized transport is greatly enlarged. Experimentally, such chiral interface states can be realized by imposing transverse electric field, in which the energy window for quantized transport is much broader than the intrinsic band gap of the corresponding CI. These phenomena are quite universal for disordered CIs due to the direct phase transition between the CI and the normal insulator.
description: 20 pages, 20 figures
Supplemental Information: Treatment of oral fungal infections using antimicrobial photodynamic therapy: A systematic review and meta-analysis.
Creators: name: Engel, Mark
name: Roomaney, Imaan
Publisher: name: University of Cape Town
Year: 2020
Subjects: subject: 110502 Dental Therapeutics, Pharmacology and Toxicology
subject: FOS: Clinical medicine
subject: 111799 Public Health and Health Services not elsewhere classified
subject: FOS: Health sciences

description: The document provides the detail pertaining to the search strategy for the systematic review and meta-analysis of the treatment of oral fungal infections using antimicrobial photodynamic therapy.
Introdução de Novas Tecnologias Agrícolas e Estratégias de Comercialização no Centro de Moçambique.
Creators: name: Uaiene, Rafael N.
name: Uaiene, Rafael N.
Publisher: name: Unknown
Year: 2006
Subjects: subject: Marketing
subject: FOS: Economics and business
subject: Research and Development/Tech Change/Emerging Technologies
subject: food security
subject: food policy
subject: central Mozambique
subject: new technologies
subject: inventory credit
subject: household farm model

description: This paper presents a quantitative assessment of the potential farmers’ benefits from increases in the productivity of the agricultural sector combined with the introduction of new marketing strategies. The analysis is based on farm-programming models designed to capture the important structural features of farm household decision making in Mozambique. The model explicitly incorporates the harvest income target and satisfaction of household caloric demand through home-consumption of own production before maximizing cash revenues through marketed goods.
description: Institute of Agricultural Research of Mozambique Directorate of Training, Documentation, and Technology Transfer
Augmented Superfield Approach To Exact Nilpotent Symmetries For Matter Fields In Non-Abelian Theory
Creators: name: Malik, R. P.
name: Mandal, Bhabani Prasad
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We derive the nilpotent (anti-)BRST symmetry transformations for the Dirac (matter) fields of an interacting four (3+1)-dimensional 1-form non-Abelian gauge theory by applying the theoretical arsenal of augmented superfield formalism where (i) the horizontality condition, and (ii) the equality of a gauge invariant quantity, on the six (4, 2)-dimensional supermanifold, are exploited together. The above supermanifold is parameterized by four bosonic spacetime coordinates x^μ(with μ= 0,1,2,3) and a couple of Grassmannian variables θand \barθ. The on-shell nilpotent BRST symmetry transformations for all the fields of the theory are derived by considering the chiral superfields on the five (4, 1)-dimensional super sub-manifold and the off-shell nilpotent symmetry transformations emerge from the consideration of the general superfields on the full six (4, 2)-dimensional supermanifold. Geometrical interpretations for all the above nilpotent symmetry transformations are also discussed in the framework of augmented superfield formalism.
description: LaTeX file, 19 pages, journal-version
Missing the point in noncommutative geometry
Creators: name: Huggett, Nick
name: Lizzi, Fedele
name: Menon, Tushar
Publisher: name: arXiv
Year: 2020
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Noncommutative geometries generalize standard smooth geometries, parametrizing the noncommutativity of dimensions with a fundamental quantity with the dimensions of area. The question arises then of whether the concept of a region smaller than the scale - and ultimately the concept of a point - makes sense in such a theory. We argue that it does not, in two interrelated ways. In the context of Connes' spectral triple approach, we show that arbitrarily small regions are not definable in the formal sense. While in the scalar field Moyal-Weyl approach, we show that they cannot be given an operational definition. We conclude that points do not exist in such geometries. We therefore investigate (a) the metaphysics of such a geometry, and (b) how the appearance of smooth manifold might be recovered as an approximation to a fundamental noncommutative geometry.
description: 36 pages, two figures. V2 minor corrections, references added. Synthese (2021)
Mode matching error signals using radio-frequency beam shape modulation
Creators: name: Ciobanu, Alexei A.
name: Brown, Daniel David
name: Veitch, Peter J.
name: Ottaway, David J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Precise mode matching is needed to maximize performance in coupled cavity interferometers such as Advanced LIGO. In this paper we present a new mode matching sensing scheme that uses a single radio frequency higher order mode sideband and single element photodiodes. It is first order insensitive to misalignment and can serve as an error signal in a closed loop control system for a set of mode matching actuators. We also discuss how it may be implemented in Advanced LIGO. The proposed mode matching error signal has been successfully demonstrated on a tabletop experiment, where the error signal increased the mode matching of a beam to a cavity to 99.9%.
Introduction of New Agricultural Technologies and Marketing Strategies in Central Mozambique
Creators: name: Uaiene, Rafael N.
name: Uaiene, Rafael N.
Publisher: name: Unknown
Year: 2006
Subjects: subject: Marketing
subject: FOS: Economics and business
subject: Research and Development/Tech Change/Emerging Technologies
subject: food security
subject: food policy
subject: central Mozambique
subject: new technologies
subject: inventory credit
subject: household farm model

description: This paper presents a quantitative assessment of the potential farmers’ benefits from increases in the productivity of the agricultural sector combined with the introduction of new marketing strategies. The analysis is based on farm-programming models designed to capture the important structural features of farm household decision making in Mozambique. The model explicitly incorporates the harvest income target and satisfaction of household caloric demand through home-consumption of own production before maximizing cash revenues through marketed goods.
description: Institute of Agricultural Research of Mozambique Directorate of Training, Documentation, and Technology Transfer
Trends, Reversion, and Critical Phenomena in Financial Markets
Creators: name: Schmidhuber, Christof
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Finance (q-fin.ST)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Portfolio Management (q-fin.PM)
subject: Trading and Market Microstructure (q-fin.TR)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: Financial markets across all asset classes are known to exhibit trends. These trends have been exploited by traders for decades. Here, we empirically measure when trends revert, based on 30 years of daily futures prices for equity indices, interest rates, currencies and commodities. We find that trends tend to revert once they reach a critical level of statistical significance. Based on polynomial regression, we carefully measure this critical level. We find that it is universal across asset classes and has a universal scaling behavior, as the trend's time horizon runs from a few days to several years. The corresponding regression coefficients are small, but statistically highly significant, as confirmed by bootstrapping and out-of-sample testing. Our results signal to investors when to exit a trend. They also reveal how markets have become more efficient over the decades. Moreover, they point towards a potential deep analogy between financial markets and critical phenomena: our analysis supports the conjecture that financial markets can be modeled as statistical mechanical ensembles of Buy/Sell orders near critical points. In this analogy, the trend strength plays the role of an order parameter, whose dynamcis is described by a Langevin equation with a quartic potential.
description: 28 pages, 6 figures, minor corrections and additional references in revised version
From Radio to X-ray: Flares on the dMe Flare Star EV Lacertae
Creators: name: Osten, R. A.
name: Hawley, S. L.
name: Allred, J. C.
name: Johns-Krull, C. M.
name: Roark, C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of a campaign to observe flares on the M dwarf flare star EV Lacertae over the course of two days in 2001 September, utilizing a combination of radio continuum, optical photometric and spectroscopic, ultraviolet spectroscopic, and X-ray spectroscopic observations, to characterize the multi-wavelength nature of flares from this active, single late-type star. We find flares in every wavelength region in which we observed. In the multi-wavelength context, the start of the intense radio flare is coincident with an impulsive optical U-band flare, to within one minute, and yet there is no signature of an X-ray response. There are other intervals of time where optical flaring and UV flaring is occurring, but these cannot be related to the contemporaneous X-ray flaring: the time-integrated luminosities do not match the instantaneous X-ray flare luminosity, as one would expect for the Neupert effect. We investigate the probability of chance occurrences of flares from disparate wavelength regions producing temporal coincidences, but find that not all the flare associations can be explained by a superposition of flares due to a high flaring rate. We caution against making causal associations of multi-wavelength flares based solely on temporal correlations for high flaring rate stars like EV Lac.
description: 52 pages, 13 figures, accepted for publication in the Astrophysical Journal
SARS-COV-2 envelope protein induces membrane curvature through asymmetric hydrophobic mismatch
Creators: name: Sandberg, Jesse
Publisher: name: No Publisher Supplied
Year: 2021

description: The SARS-CoV-2 Envelope (E) protein is an integral membrane protein and is implicated in numerous viral processes including but not limited to assembly, budding, envelope formation, and pathogenesis. While much work has recently been done to characterize this protein's structure, function, and interactions with other proteins, its interactions with and effects on surrounding membranes are less well understood. E is known to express in the Endoplasmic Reticulum Golgi Intermediate Complex (ERGIC) where it aids in the budding process by inducing curvature on the ERGIC membrane, helping push a new virion outward. When E is mutated in a related virus, the virus loses its characteristic spherical shape and becomes less capable of infecting new cells. This suggests that better understanding of E's ability to induce membrane curvature in SARS-CoV-2 may be useful in the fight against COVID-19. Using Coarse Grain Molecular Dynamics (CG-MD) simulations and an elastic simulation of our own design, we computationally studied the bending effect of the E protein in a variety of model membranes. Our results strongly suggest that E's bending mechanism is driven by the combination of E's asymmetric shape and the degree of hydrophobic mismatch between E and the surrounding membrane.
B-Meson Wavefunction in the Wandzura-Wilczek Approximation
Creators: name: Huang, Tao
name: Wu, Xing-Gang
name: Zhou, Ming-Zhen
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The B-meson wavefunction has been studied with the help of the vacuum-to-meson matrix element of the nonlocal operators in the heavy quark effective theory. In order to obtain the Wandzura-Wilczek-type B-meson wavefunction, we solve the equations which are derived from the equation of motion of the light spectator quark in the B meson by using two different assumptions. Under the condition that $ω_0=2\barΛ$, the solutions for the B-meson wavefunction in this paper agree well with the one obtained by directly taking the heavy quark limit $m_b\to\infty$. Our results show that the equation of motion of the light spectator quark in the B meson can impose a strong constraint on the B-meson wavefunctions $Ψ_\pm(ω,z^2)$. Based on the obtained results, we claim that both its distribution amplitudes $ϕ_B(ω)$ and $\barϕ_B(ω)$ are important for calculating the B meson decays.
description: 12 pages, 2 figures
O Impacto Económico de Variedades de Mandioca Tolerantes à Doença da Podridão Radicular sobre a Segurança Alimentar no Litoral de Moçambique
Creators: name: McSween, S.
name: Walker, Thomas S.
name: Salegua, Venancio Alexandre
name: Pitoro, Raul
name: McSween, S.
name: Walker, Thomas S.
name: Salegua, Venancio Alexandre
name: Pitoro, Raul
Publisher: name: Unknown
Year: 2006
Subjects: subject: Crop Production/Industries
subject: Food Security and Poverty
subject: food security
subject: food policy
subject: coastal Mozambique
subject: cassava brown streak disease
subject: Nikwaha

description: This paper begins with a brief description of the importance of cassava in Mozambique, the incidence and consequences of brown streak, and the scope of the NGO Save the Children/U.S. program to propagate brown streak tolerant cassava planting material that is largely responsible for the dissemination of Nikwaha. Benefits are discussed extensively; a reasonable and conservative estimate of the per plant benefits of Nikwaha is the key parameter in the analysis. The early acceptance of Nikwaha is reviewed, and its diffusion over time is projected. The intervention is cast as a project and is appraised in the setting of a cost-benefit analysis. In the conclusions, we examine the limitations of our calculation on economic impact, identify areas for research, evaluate the prospects for more investment in extension, and draw lessons from Save the Children’s Nikwaha experience.
description: Institute of Agricultural Research of Mozambique Directorate of Training, Documentation, and Technology Transfer
Delta-doped Electron Multiplying CCDs for FIREBall-2
Creators: name: Kyne, Gillian
name: Hamden, Erika T.
name: Nikzad, Shouleh
name: Hoadley, Keri
name: Jewell, April
name: Jones, Todd
name: Hoenk, Michael
name: Cheng, Samuel
name: Martin, D. Christopher
name: Lingner, Nicole
name: Schiminovich, David
name: Milliard, Bruno
name: Grange, Robert
name: Daigle, Olivier
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We present the status of on-going detector development efforts for our joint NASA/CNES balloon-borne UV multi-object spectrograph, the Faint Intergalactic Redshifted Emission Balloon (FIREBall-2; FB-2). FB-2 demonstrates a new UV detector technology, the delta-doped Electron Multiplying CCD (EMCCD), in a low risk suborbital environment, to prove the performance of EMCCDs for future space missions and Technology Readiness Level (TRL) advancement. EMCCDs can be used in photon counting (PC) mode to achieve extremely low readout noise ($
description: 36 pages, 9 figures
TASAVVUFIY GO'ZALLIK FALSAFASI IMOM G'AZZOLIY TASNIFIDA
Creators: name: Raximova Marjona
Publisher: name: Zenodo
Year: 2024

description: Imom G'azzoliyning tasavvuf ilmiga qo'shgan hissasi va uning tarixiylik nuqtayi nazaridan o'rganilishi. O'quvchi tasavvurida tasavvuf to'g'risida umumiy tushunchani shakllantirish.

Kalit so'zlar: Tasavvuf, Imom G'azzoliy, go'zallik, mashoyix, islomiy falsafa, tariqat.
Isolated AGNs NGC 5347, ESO 438-009, MCG-02-04-090, and J11366-6002: Swift and NuSTAR joined view
Creators: name: A., Vasylenko A.
name: B., Vavilova I.
name: G, Pulatova N.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present the spectral analysis with the Nuclear Spectroscopic Telescope Array (NuSTAR) of four isolated galaxies with active galactic nuclei selected from 2MIG catalogue: NGC 5347, ESO 438-009, MCG-02-09-040, and IGR J11366-6002. We also used the Swift/Burst Alert Telescope (BAT) data up to $\sim$ 150 keV for MCG 02-09-040, ESO 438-009, and IGR J11366-6002 as well as the Swift/XRT data in 0.3--10 keV energy band for NGC 5347, ESO 438-009, and IGR J11366-6002. All the sources appear to have the reflected spectrum component with different reflection fractions in addition to the primary power-law continuum. We found that power-law indices for these sources lie between 1.6 to 1.8. The spectra of two sources, NGC 5347 and MCG-02-09-040, show the Fe $K_α$ emission line. For both of these sources, the Fe $K_α$ lines have a large value of EW $\sim$ 1 keV. The X-ray spectrum of NGC 5347 is being best fitted by a pure reflection model with $E_{cut} \sim 117$ keV and without the presence of any additional primary power-law component. We also found that X-ray spectrum of MCG -02-09-040 shows the presence of heavy neutral obscuration of $N_{H}\sim10^{24}~cm^{-2}$. However, this provides a non-physical value of reflection in the case with fitting by a simple reflection model. A more appropriate fit is obtained with adopting the physical Monte Carlo based model as BNTorus. It allowed us to determine the absorption value of N$_{H}\sim1.04\times10^{24}~cm^{-2}$ and reasonable power-law index of $Γ\approx 1.63$. Results for MCG -02-09-040 are presented for the first time.
description: 11 pages, 3 figures, 3 tables, accepted for publication in Astronomische Nachrichten; any comment welcome
Economic Impact on Food Security of Varietal Tolerance to Cassava Brown Streak Disease in Coastal Mozambique
Creators: name: McSween, S.
name: Walker, Thomas S.
name: Salegua, Venancio Alexandre
name: Pitoro, Raul
name: McSween, S.
name: Walker, Thomas S.
name: Salegua, Venancio Alexandre
name: Pitoro, Raul
Publisher: name: Unknown
Year: 2006
Subjects: subject: Crop Production/Industries
subject: Food Security and Poverty
subject: food security
subject: food policy
subject: coastal Mozambique
subject: cassava brown streak disease
subject: Nikwaha

description: This paper begins with a brief description of the importance of cassava in Mozambique, the incidence and consequences of brown streak, and the scope of the NGO Save the Children/U.S. program to propagate brown streak tolerant cassava planting material that is largely responsible for the dissemination of Nikwaha. Benefits are discussed extensively; a reasonable and conservative estimate of the per plant benefits of Nikwaha is the key parameter in the analysis. The early acceptance of Nikwaha is reviewed, and its diffusion over time is projected. The intervention is cast as a project and is appraised in the setting of a cost-benefit analysis. In the conclusions, we examine the limitations of our calculation on economic impact, identify areas for research, evaluate the prospects for more investment in extension, and draw lessons from Save the Children’s Nikwaha experience.
description: Institute of Agricultural Research of Mozambique Directorate of Training, Documentation, and Technology Transfer
Upgrade of the ILC cryomodule
Creators: name: Basti, A.
name: Bedeschi, F.
name: Bryzgalin, A.
name: Budagov, J.
name: Fabbricatore, P.
name: Harms, E.
name: Illarionov, S.
name: Nagaitsev, S.
name: Pekar, E.
name: Rybakov, V.
name: Sabirov, B.
name: Samarokov, Ju.
name: Soyars, W.
name: Taran, Ju.
name: Trubnikov, G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences
subject: F.2.2; I.2.7
subject: F.2.2, I.2.7

description: Results of testing modified components for the cryomodule of the International Linear Collider (ILC) are summarized. To reduce the ILC project cost, it is proposed to replace titanium cryomodule components with stainless steel (SS) ones. New bimetallic transitions Ti_SS, Nb_SS have been produced by a unique method based on explosion welding. Successive upgrading of these components to the latest version of the Nb/Ti/SS transition element has led to improvement of the ILC cryomodule. This new component resolves problems of residual stress, and its specific design prevents the possibility of a shift due to the difference in the linear expansion coefficients of the constituent metals. Leak tests with the He gas revealed no leaks at the background rate of 0.2x10-10atmxcc-1s. The test results are very encouraging. The up-to-date design of trimetallic Nb_Ti_SS element promises technologically simpler and less expensive manufacture. Investigations have shown that explosion welding allows unique trimetallic components to be made not only for cryogenic units of accelerators but also for laboratory equipment and for general engineering applications.
description: 17 figures, 16 pages, 1 Table