cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Trails of Solar System Minor Bodies on WFC/ACS Images
Creators: name: Marchi, S.
name: Momany, Y.
name: Bedin, L. R.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper we analyse very short arcs of minor bodies of the Solar System detected on Hubble Space Telescope (HST) Wide Field Channel ACS images. In particular, we address how to constrain the Keplerian orbital elements for minor body detections, illustrating the method for 2 objects. One of the minor bodies left 13 successive trails, making it the most well-sampled object yet identified in the HST archive. Most interestingly, we also address the problem of ephemeris prediction and show that in the particular case of HST very short arcs the confinement window for subsequent recovery is significantly reduced to a narrow linear region, that would facilitate successive observations.
description: 11 pages, 5 figures, Accepted by NEW ASTRONOMY on July 7th 2004
Evolution of the Near-Infrared Tully-Fisher Relation: Constraints on the Relationship Between the Stellar and Total Masses of Disk Galaxies since z=1
Creators: name: Conselice, Christopher J.
name: Bundy, Kevin
name: Ellis, Richard S.
name: Brichmann, Jarle
name: Vogt, Nicole P.
name: Phillips, Andrew C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using a combination of Keck spectroscopy and near-infrared imaging, we investigate the K-band and stellar mass Tully-Fisher relation for 101 disk galaxies at 0.2 < z < 1.2, with the goal of placing the first observational constraints on the assembly history of halo and stellar mass. Our main result is a lack of evolution in either the K-band or stellar mass Tully-Fisher relation from z = 0 - 1.2. Furthermore, although our sample is not statistically complete, we consider it suitable for an initial investigation of how the fraction of total mass that has condensed into stars is distributed with both redshift and total halo mass. We calculate stellar masses from optical and near-infrared photometry and total masses from maximum rotational velocities and disk scale lengths, utilizing a range of model relationships derived analytically and from simulations. We find that the stellar/total mass distribution and stellar-mass Tully-Fisher relation for z > 0.7 disks is similar to that at lower redshift, suggesting that baryonic mass is accreted by disks along with dark matter at z < 1, and that disk galaxy formation at z < 1 is hierarchical in nature. We briefly discuss the evolutionary trends expected in conventional structure formation models and the implications of extending such a study to much larger samples.
description: ApJ, in press, 9 pages
Navier-Stokes-Cahn-Hilliard equations on evolving surfaces
Creators: name: Elliott, Charles M.
name: Sales, Thomas
Publisher: name: arXiv
Year: 2024
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35K59 (Primary) 35Q35, 35K67 (Secondary)

description: We derive a system of equations which can be seen as an evolving surface version of the diffuse interface "Model H" of Hohenberg and Halperin (1977). We then consider the well-posedness for the corresponding (tangential) system when one prescribes the evolution of the surface. Well-posedness is proved for smooth potentials in the Cahn-Hilliard equation with polynomial growth, and also for a thermodynamically relevant singular potential.
description: 59 pages. Fixed even more typos, and corrected the long time existence result
Practical drift conditions for subgeometric rates of convergence
Creators: name: Douc, Randal
name: Fort, Gersende
name: Moulines, Eric
name: Soulier, Philippe
Publisher: name: arXiv
Year: 2004
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60J10. (Primary)

description: We present a new drift condition which implies rates of convergence to the stationary distribution of the iterates of a ψ-irreducible aperiodic and positive recurrent transition kernel. This condition, extending a condition introduced by Jarner and Roberts [Ann. Appl. Probab. 12 (2002) 224-247] for polynomial convergence rates, turns out to be very convenient to prove subgeometric rates of convergence. Several applications are presented including nonlinear autoregressive models, stochastic unit root models and multidimensional random walk Hastings-Metropolis algorithms.
Associations between frequent pain or headaches and neurobehavioral symptoms by gender and TBI severity
Creators: name: Meltzer, Karen J.
name: Juengst, Shannon B.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Physiology
subject: Biotechnology
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Objective: To investigate differences in frequent pain or headaches and associated neurobehavioral symptoms among men, women, and transgender individuals with and without a history of traumatic brain injury (TBI). Setting: Community Participants: English and Spanish-speaking adults (n = 2,862) with and without self-reported TBI Design: Cross-sectional study Main Measures: Behavioral Assessment Screening Tool (BAST) subscales for Negative Affect, Substance Abuse, Executive Function, Fatigue, Impulsivity, and one item for experiencing “frequent pain or headache.” Results: Women reported more pain than men. Women with a mild TBI (mTBI) more often reported frequent headaches/pain than woman in general or those with mTBI alone. Women reporting frequent headache/pain reported more negative affect and fatigue than men with comparable TBI history. Individuals identifying as transgender/other without TBI had higher negative affect and fatigue than both men and women without TBI. Individuals with mTBI and frequent headache/pain reported more executive function problems than those with mTBI without headache/pain. Pain and moderate/severe TBI were associated with more executive function problems in men and women, but more so for women. Conclusion: Results suggest frequent headache/pain may differ between genders, particularly after mTBI. Pain, fatigue, executive function, and negative affect may be especially important in women’s recovery from TBI.
title: Journal of African American Women and Girls in Education, Vol. 1 No. 3 (2021): Fall 2021
title: Fall 2021
titleType: AlternativeTitle
Creators: name: Journal Of African American Women And Girls In Education
Publisher: name: Journal of African American Women and Girls in Education
Year: 2021

description: The Journal of African American Women and Girls in Education (JAAWGE) elucidates Black women and girls' educational experiences across a variety of disciplines, contexts, and geographic settings.
description: Ain’t I A Woman: Black Women’s Endurance in Higher Education, the Implications of Linked Fate, and the Urgent Call for Greater Cultural Responsiveness ...1-9 Dads Matter, Too...10-27 Black Women Undergraduates...65-84 Pushing back against the mammy...45-64 “Black Women are the Mules of the World”: Black Women Professors of Practice in Teacher Education Programs...109-129 A strengths-based qualitative exploration of academic motivation strategies among lower-income Black college women attending PWIs...28-44 Discomfort, Resistance, and Othering: A Poetic Inquiry into Urban Teacher Preparation Program Redesign...85-108
Suppression of left-handed properties in disordered metamaterials
Creators: name: Zharov, Alexander A.
name: Shadrivov, Ilya V.
name: Kivshar, Yuri S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We study the effect of disorder on the effective magnetic response of composite left-handed metamaterials and their specific properties such as negative refraction. We show that relatively weak disorder in the split-ring resonators can reduce and even completely eliminate the frequency domain where the composite material demonstrates the left-handed properties. We introduce the concept of the order parameter to describe novel physics of this effect.
description: 4 pages, 2 figures
Probing MACHOs Toward the Galactic Bulge
Creators: name: Gould, Andrew
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: If the massive compact halo object (MACHO) fraction of the Galactic dark halo is f ~ 20% as suggested by some microlensing experiments, then about 1.2% of lensing events toward the Galactic bulge are due to MACHOs. For the 40% of these that lie nearby (D_l < 4 kpc), measurement of their distance D_l would distinguish them from bulge lenses, while measurement of their transverse velocity v_l would distinguish them from disk lenses. Hence, it would be possible to identify about 0.5%(f/20%) of all events as due to MACHOs. I show that a planned experiment using the Space Interferometry Mission (SIM PlanetQuest) could thereby detect 1 or 2 such events. This is at the margin of what is required because of a small, but non-negligible background from spheroid stars.
description: 11 Pages, 1 Figure, Submitted to ApJ
Improved Constraints on The Neutral Intergalactic Hydrogen Surrounding Quasars at Redshifts z>6
Creators: name: Wyithe, Stuart
name: Loeb, Abraham
name: Carilli, Chris
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We analyze the evolution of HII regions around the seven known SDSS quasars at z>6. The comparison between observed and model radii of the HII regions generated by these quasars individually, suggests that the surrounding intergalactic hydrogen is significantly neutral. When all constraints are combined, the existing quasar sample implies a volume averaged neutral fraction that is larger than 10% at z>6. This limited sample permits a preliminary analysis of the correlations between the quasar parameters, the sizes of their HII regions, and the associated constraints on the neutral hydrogen fraction. We find no evidence in these correlations to contradict the interpretation that the red side of the Gunn-Peterson trough corresponds to the boundary between an HII region and a partially neutral IGM.
description: 9 pages, 4 figures. Submitted to ApJ
Some new Cu(II) complexes containing O,N-donor Schiff base ligands derived from 4-aminoantipyrine: synthesis, characterization, crystal structure and substitution effect on antimicrobial activity
Creators: name: Kargar, Hadi
name: Aghaei-Meybodi, Fariba
name: Elahifard, Mohammad Reza
name: Tahir, Muhammad Nawaz
name: Ashfaq, Muhammad
name: Munawar, Khurram Shahzad
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Molecular Biology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 60506 Virology
subject: FOS: Biological sciences

description: A new series of mononuclear Cu(II) complexes, [Cu(L1)2]: C1, [Cu(L2)2]: C2, [Cu(L3)2]: C3 and [Cu(L4)2]: C4, with bis-O,N-bidentate Schiff base ligands (HL1: (E)-4-[(2-hydroxy-5-bromobenzylidene)amino]-1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one; HL2: (E)-4-[(2-hydroxy-5-chlorobenzylidene)amino]-1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one; HL3: (E)-4-[(2-hydroxy-5-hydroxybenzylidene)amino]-1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one; HL4: (E)-4-[(2-hydroxy-5-nitrobenzylidene)amino]-1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one) have been prepared and characterized by elemental (CHN) analyses, FT-IR and multinuclear NMR (1H and 13C) spectroscopy. Furthermore, the crystal structures of HL3, HL4 and C4 were analyzed by single-crystal X-ray diffraction (SC-XRD). The XRD studies revealed that C4 has 2:1 ligand-to-metal ratio and adapts highly distorted square planar geometry. The in vitro antibacterial activities of the synthesized ligands and their respective copper(II) complexes were elaborated by screening them against Staphylococcus aureus and Escherichia coli. The results showed a wide range of antimicrobial activity due to different electronic environments of the substituents on phenolic moiety.
IMPACTO DAS BARREIRAS SANITÁRIAS E FITOSSANITÁRIAS NA COMPETITIVIDADE DAS EXPORTAÇÕES BRASILEIRAS E PARANAENSES DE CARNE BOVINA
Creators: name: Braun, Mirian Beatriz Schneider
name: Santos, Franciele Roberta Dos
name: Figueiredo, Adelson Martins
name: Cardoso, Rubiane Daniele
name: Braun, Mirian Beatriz Schneider
name: Santos, Franciele Roberta Dos
name: Figueiredo, Adelson Martins
name: Cardoso, Rubiane Daniele
Publisher: name: Unknown
Year: 2008
Subjects: subject: Livestock Production/Industries
subject: Política comercial e Agricultura
subject: Barreiras Não-tarifárias
subject: Febre Aftosa
subject: Vantagens comparativas
subject: Commercial politics and Agriculture
subject: sanitary and fitossanitary barriers
subject: Aphthous Fever
subject: Comparative advantages

description: Este estudo teve como meta avaliar os impactos das barreiras sanitárias e fitossanitárias sobre os volumes das exportações de carne bovina brasileira e paranaense, após a detecção de focos de febre aftosa no território nacional. Para isso, aplicou-se o índice de vantagem comparativa revelada para o Brasil e para o estado do Paraná. Constatou-se que a imposição de barreiras sanitárias e fitossanitárias não reduziram a competitividade brasileira nas exportações de carne bovina. Já o estado do Paraná sofreu redução na competitividade de suas exportações desse produto, com a imposição dessas barreiras no comércio internacional. Isso refletiu em redução das exportações de carne bovina desse estado. Ademais, para o Paraná que não possuía vantagens comparativas nas exportações desse produto, em relação aos demais estados brasileiros, ficou ainda mais difícil adquiri-la. ---------------------------------------------This study had as goal to evaluate the impacts of sanitary and fitossanitary barriers on the volumes of Brazilian and paranaense exportations bovine meat, after the detention of aftosa´s focos in the domestic territory. For this, was applied the index of comparative advantage for Brazil and Paraná State. The study verified that the imposition of sanitary and fitossanitary barriers not reduced the Brazilian competitiveness in the exportations of bovine meat. By contrast the exportations of this product of Paraná state suffered reduction in the competitiveness, with the imposition of these barriers in the international trade. It reflected as reduction of bovine meat exportations for this state. Also, for Paraná State that had not comparative advantages in the exportations of this product, in relation to the other Brazilian states, turned more difficult acquire it.
Geometrical Optics in Coincidence Imaging System
Creators: name: Cao, De-Zhong
name: Xiong, Jun
name: Wang, Kaige
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We discuss the geometrical optics of coincidence imaging for two kinds of spatial correlations which are related to a classical thermal light source and a two-photon quantum entangled state.
description: 4 pages, 5 figures
Highly Efficient Encoding for Job-Shop Scheduling Problems and its Application on Quantum Computers
Creators: name: Schmid, Mathias
name: Braun, Sarah
name: Sollacher, Rudolf
name: Hartmann, Michael J.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: Number Theory (math.NT)
subject: Optimization and Control (math.OC)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Combinatorial optimization problems are considered to be an application, where quantum computing can have transformative impact. In the industrial context, job shop scheduling problems that aim at finding the optimal schedule for a set of jobs to be run on a set of machines are of immense interest. Here we introduce an efficient encoding of job shop scheduling problems, which requires much fewer bit-strings for counting all possible schedules than previously employed encodings. For problems consisting of $N$ jobs with $N$ operations, the number of required bit-strings is at least reduced by a factor $N / \log_2(N)$ as compared to time indexed encodings. This is particularly beneficial for solving job shop scheduling problems on quantum computers, since much fewer qubits are needed to represent the problem. Our approach applies to the large class of flexible and usual job-shop scheduling problems, where operations can possibly be executed on multiple machines. Using variational quantum algorithms, we show that the encoding we introduce leads to significantly better performance of quantum algorithms than previously considered strategies. Importantly, the encoding we develop also enables significantly more compact classical representations and will therefore be highly useful even beyond applicability on quantum hardware.
O PRONAF E A REDUÇÃO DAS DESIGUALDES DE GÊNERO NO MEIO RURAL
Creators: name: Reis, Ana Paula Lima Dos
name: Casimiro Filho, Francisco
name: Moreira, Maria Lucia Sousa
name: Reis, Ana Paula Lima Dos
name: Casimiro Filho, Francisco
name: Moreira, Maria Lucia Sousa
Publisher: name: Unknown
Year: 2008
Subjects: subject: Labor and Human Capital
subject: PRONAF
subject: Qualidade de vida
subject: Agricultura Familiar
subject: Quality of life
subject: Familiar Agriculture

description: Este estudo avaliou o impacto o PRONAF na redução das diferenças entre homens e mulheres, no assentamento Santana. Utilizou-se dados de origem primária obtidos através de questionários. Os métodos de análise utilizados foram análise tabular, testes de hipóteses. A qualidade de vida foi estudada através do Índice de Qualidade de Vida – construído a partir dos indicadores saúde, educação, condições sanitárias, condição de moradia, acesso a bens duráveis e transporte. No geral os beneficiados apresentaram um médio nível de qualidade de vida (IQV = 0,67) após o PRONAF. Para os homens houve mudança positiva na educação, condições de moradia, condições sanitárias e acesso a bens duráveis após o PRONAF. As mulheres obtiveram ganhos em todos os indicadores analisados, exceto saúde. A diferença entre homens e mulheres quanto a todos os indicadores analisados inexistiu depois do PRONAF. Dentre as principais conclusões da pesquisa apontam-se melhorias na qualidade de vida de homens e mulheres após o PRONAF e diminuição das diferenças entre os sexos quanto a este aspecto-----------------------------------------------This study evaluated the impact PRONAF in reducing differences between men and women of the seated ones of the nesting Santana. It was used given of primary origin gotten through questionnaires. The used methods of analysis has been tabular analysis, tests of hypotheses. The quality of life was studied through the Index of Quality of Life - constructed from the pointers sanitary health, education, conditions, condition of housing and access to the durable goods and transportation. In general the benefited ones had presented an average level of satisfaction after (IQV=0,67) the PRONAF. The men it had positive change in the education level, sanitary conditions of housing, conditions and access to durable goods related to the situation before and after the PRONAF. The women had gotten profits in all the analyzed points, except health. This difference between men and women concerning all the analyzed points, inexisted after PRONAF. Amongst the main conclusions of the research improvements in the quality of life of men and women are pointed after the PRONAF and reduction of the differences between the sexes how much to this aspect. However, these changes verified in the quality of life had not been decurrent of the PRONAF. Even though, these benefited people attribute to the program the profits reached in its production and agree that their income increased after the benefit.
UMA ANÁLISE DA RELAÇÃO ENTRE OS PREÇOS DOS BIOCOMBUSTÍVEIS E DAS CULTURAS ALIMENTARES NO BRASIL: O CASO DO SETOR SUCROALCOOLEIRO
Creators: name: Melo, Andre De Souza
name: Mota, Daniela Gonzaga Da
name: Lima, Ricardo Chaves
name: Melo, Andre De Souza
name: Mota, Daniela Gonzaga Da
name: Lima, Ricardo Chaves
Publisher: name: Unknown
Year: 2008
Subjects: subject: Crop Production/Industries
subject: Demand and Price Analysis
subject: biocombustíveis
subject: preço do etanol
subject: preço do açúcar
subject: biofuels
subject: ethanol price
subject: sugar price

description: Este trabalho tem como objetivo analisar o impacto do crescimento do preço de etanol no preço do açúcar. Para tal análise utiliza-se a metodologia de vetores autorregressivos para identificar a relação de causalidade entre os preços do etanol e do açúcar. O crescimento do preço do etanol é resultado de um aumento da demanda internacional pela commodity devido a questões ambientais, econômicas e geopolíticas; e resultado também do crescimento do consumo interno de etanol com a introdução de veículos flex na frota brasileira. Com esse aumento da demanda por etanol, foi gerada uma competição com a produção de açúcar, reduzindo a disponibilidade dessa commodity. Como resultado, foi encontrada uma relação de bicausalidade entre os preços do etanol e do açúcar. Em conseqüência, políticas governamentais devem se preocupar com os problemas de segurança alimentar, quando se incentivam programas de produção de biocombustíveis.---------------------------------------------This paper aims to analyze the ethanol price increase impact on sugar price. To develop this examination we apply Vector Autorregression methodology to identify causality relation between the prices of alcohol and sugar. The price increase of ethanol is a result of an international demand increase for this commodity, due to environmental, economic and geopolitical issues. It is also a result of the ethanol domestic consumption increase with the introduction of flex vehicles in Brazil. With this demand intensification for ethanol, a competition arises against the sugar production. This situation represents an impact on sugar production, reducing the availability for this commodity. As a result, a bicausal relation between prices of alcohol and sugar was found. In consequence, decision makers must beware of food security problems when inducing biofuel production programs.
Evaluation of rapid immunoassay for the detection of Shigella species in invasive diarrheal stool
Creators: name: Ara, Rifat
name: Houpt, Eric R.
name: Rashidul Haque
name: Taniuchi, Mami
name: Alam, Masud
Publisher: name: figshare
Year: 2020
Subjects: subject: 110303 Clinical Microbiology
subject: FOS: Clinical medicine

description: This poster presentation was done in 15th Asian Conference on Diarrhoeal Disease and Nutrition (ASCODD 2020)
RESULTADOS ECONÔMICOS DA ATIVIDADE LEITEIRA NA REGIÃO DE LAVRAS (MG) NOS ANOS 2004 E 2005: UM ESTUDO MULTICASOS
Creators: name: Carvalho, Francisval De Melo
name: Lopes, Marcos Aurelio
name: Cardoso, Milton Ghedini
name: Dias, Alessandra Silva
name: Lima, Andre Luis Ribeiro
name: Carvalho, Francisval De Melo
name: Lopes, Marcos Aurelio
name: Cardoso, Milton Ghedini
name: Dias, Alessandra Silva
name: Lima, Andre Luis Ribeiro
Publisher: name: Unknown
Year: 2008
Subjects: subject: Livestock Production/Industries
subject: bovinocultura de leite
subject: análise de rentabilidade
subject: custo de produção
subject: ponto de equilíbrio
subject: cattle
subject: production cost
subject: breakeven point
subject: profitability analysis

description: Estudou-se a rentabilidade da atividade leiteira de 17 propriedades da região de Lavras/MG e identificaram-se os componentes que exerceram maior influência sobre os custos finais da atividade. Os dados foram coletados mensalmente durante o período de janeiro de 2004 a dezembro de 2005. Considerou-se a margem bruta, a margem líquida e o resultado (lucro ou prejuízo) como indicadores de eficiência econômica. Os itens componentes do custo operacional efetivo que exerceram maior influência sobre os custos da atividade leiteira foram, em ordem decrescente, alimentação (55,9%), mão-de-obra (19,1%), despesas diversas (11,3%), energia (7,1%), sanidade (4,9%), ordenha (0,74%), impostos (0,74%) e inseminação artificial (0,23%). A margem líquida e o resultado positivo indicam que os pecuaristas têm condições de produzir a médio e a longo prazo, com conseqüente capitalização. Os resultados do estudo não podem ser extrapolados por não se tratar de uma amostra probabilística.----------------------------------------------It was studied the profitability of the milk production in 17 properties in the region of Lavras (MG), and the components that had the greatest influence on the final costs of the business were identified. The data were monthly collected from January 2004 to December 2005. The gross margin, net margin, and the result (profit or loss) were taken into consideration as indicators of economic efficiency. The component items of the effective operational cost that had the greatest influence upon the costs of dairy business were, in decreasing order, feeding (55.9%), labor (19.1%), different expenses (11.3%), energy (7.1%), health (4.9%), milking (0.74%), taxes (0.74%), and artificial insemination (0,23%). The net margin and the positive result show the farmers have conditions to produce in middle and long terms, with consequent capitalization. Although, the results of the study can not be extrapolated, since they do not represent a random sampling.
Modeling Network Architecture: A Cloud Case Study
Creators: name: Al-Fedaghi, Sabah
name: Al-Qemlas, Dana
Publisher: name: arXiv
Year: 2020
Subjects: subject: Software Engineering (cs.SE)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: The Internet s ability to support a wide range of services depends on the network architecture and theoretical and practical innovations necessary for future networks. Network architecture in this context refers to the structure of a computer network system as well as interactions among its physical components, their configuration, and communication protocols. Various descriptions of architecture have been developed over the years with an unusually large number of superficial icons and symbols. This situation has created a need for more coherent systematic representations of network architecture. This paper is intended to refine the design, analysis, and documentation of network architecture by adopting a conceptual model called a thinging (abstract) machine (TM), which views all components of a network in terms of a single notion: the flow of things in a TM. Since cloud computing has become increasingly popular in the last few years as a model for a shared pool of networks, servers, storage, and applications, we apply the TM to model a real case study of cloud networks. The resultant model introduces an integrated representation of computer networks.
description: 15 pages, 18 figures
Non-Markovian Dynamics in Fiber Delay-line Buffers
Creators: name: Lee, Kim Fook
name: Kumar, Prem
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the non-Markovian effect on a two-photon polarization entangled state, in which one photon from the pair is stored in a fiber delay-line buffer. We propose a model of a photonic qubit coupled to fiber birefringence and a fiber reservoir representing the environment. We analytically derive a non-Markovian probability function for the buffered photon and its paired photon. To verify the probability function, we perform full quantum state tomography of the photon pairs. The probability function fits well with the experimental data and physical values. Our results indicate that our quantum system operates slightly above the threshold for a non-Markovian transition. We observe a unique polarization dynamic of the buffered photon. We further exploit measures of quantum mutual information to study the quantumness of the photon pairs. Werner's well-known separability criterion occurs at a buffer time of about 0.9$\,$ms. Our results imply that quantum discord can surpass Werner's criterion, and hence, quantum bi-partite correlation can exist for buffer times greater than 0.9$\,$ms.
description: 21 pages, 4 figures
MRAnnotator: multi-Anatomy and many-Sequence MRI segmentation of 44 structures
Creators: name: Zhou, Alexander
name: Liu, Zelong
name: Tieu, Andrew
name: Patel, Nikhil
name: Sun, Sean
name: Yang, Anthony
name: Choi, Peter
name: Lee, Hao-Chih
name: Tordjman, Mickael
name: Deyer, Louisa
name: Mei, Yunhao
name: Fauveau, Valentin
name: Soultanidis, George
name: Taouli, Bachir
name: Huang, Mingqian
name: Doshi, Amish
name: Fayad, Zahi A.
name: Deyer, Timothy
name: Mei, Xueyan
Publisher: name: arXiv
Year: 2024
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: In this retrospective study, we annotated 44 structures on two datasets: an internal dataset of 1,518 MRI sequences from 843 patients at the Mount Sinai Health System, and an external dataset of 397 MRI sequences from 263 patients for benchmarking. The internal dataset trained the nnU-Net model MRAnnotator, which demonstrated strong generalizability on the external dataset. MRAnnotator outperformed existing models such as TotalSegmentator MRI and MRSegmentator on both datasets, achieving an overall average Dice score of 0.878 on the internal dataset and 0.875 on the external set. Model weights are available on GitHub, and the external test set can be shared upon request.
title: On K*-surfaces of integral degree and full intrinsic quadric surfaces
Creators: name: Király, Katharina Lydia
Publisher: name: Universität Tübingen
Year: 2025
Subjects: subject: 510

description: This dissertation is devoted to the study of quasismooth, rational, projective surfaces with K*-action. Inside this class we exhibit and explore two infinite series. Firstly, the surfaces of Picard number one and integral degree. Secondly, the full intrinsic quadric surfaces, that is, those whose Cox ring is defined by a single quadratic equation.
Measurement of the p-pbar -> Wgamma + X cross section at sqrt(s) = 1.96 TeV and WWgamma anomalous coupling limits
Creators: name: D0 Collaboration
name: Abazov, V. M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The WWgamma triple gauge boson coupling parameters are studied using p-pbar -> l nu gamma + X (l = e,mu) events at sqrt(s) = 1.96 TeV. The data were collected with the DO detector from an integrated luminosity of 162 pb^{-1} delivered by the Fermilab Tevatron Collider. The cross section times branching fraction for p-pbar -> W(gamma) + X -> l nu gamma + X with E_T^{gamma} > 8 GeV and Delta R_{l gamma} > 0.7 is 14.8 +/- 1.6 (stat) +/- 1.0 (syst) +/- 1.0 (lum) pb. The one-dimensional 95% confidence level limits on anomalous couplings are -0.88 < Delta kappa_{gamma} < 0.96 and -0.20 < lambda_{gamma} < 0.20.
description: Submitted to Phys. Rev. D Rapid Communications
CARACTERIZAÇÃO DO PERFIL DA APICULTURA EM CAPÃO BONITO E ADJACÊNCIAS
Creators: name: Fachini, Cristina
name: Firetti, Ricardo
name: Oliveira, Eduardo Cardoso De
name: Carvalho, Antonio Assiz De Filho
name: Fachini, Cristina
name: Firetti, Ricardo
name: Oliveira, Eduardo Cardoso De
name: Carvalho, Antonio Assiz De Filho
Publisher: name: Unknown
Year: 2008
Subjects: subject: Livestock Production/Industries
subject: apicultura
subject: nível tecnológico
subject: análise multivariada
subject: beekeeping
subject: technology level
subject: multivariate analysis

description: O Sudoeste Paulista é a segunda maior região do Estado em importância para a apicultura tendo totalizado em 2006 o valor de produção de R$ 3.052.402 com 17.135 colméias. Em 2006 os “produtores de mel” de Capão Bonito existiam “produtores de mel” que tinham a apicultura como principal fonte de renda até agricultores familiares que tinham a produção de mel como mais uma alternativa de renda. Tais características se traduziam em sistemas de produção com diferentes níveis tecnológicos e, portanto, custos de produção também diferenciados. O presente estudo teve como objetivo caracterizar profundamente o perfil dos produtores apícolas em Capão Bonito e adjacências segundo características sócio-econômicas e o nível tecnológico de produção. Foram aplicados 25 questionários sobre uma amostra de apicultores do município. A metodologia utilizada para analise foi multivariada. Os apicultores muito pequenos efetivamente possuem baixa produtividade e perdas na escala de produção. Esse grupo está associado a pastos apícolas próximos da residência, mão de obra familiar, participantes de associação de bairro rural. O grupo de médio e grande apicultor está associado à alta produtividade, grande número de colméias, duas ou mais visitas semanais ao apiário e pertencem à uma associação específica de apicultores. O manejo do apiário (em especial troca de cera) se relaciona com a escolaridade dos apicultores.----------------------------------------------The Southeast of São Paulo is the second major region in beekeeping of the state, having totalized a production value in 2006 of R$ 3.052.402 with 17.315 beehives. In 2006 the honey producers around Capão Bonito there were beekeepers who had the beekeeping as the principal income source until those family farmers who had this rural activity as an alternative source of income. These characteristics has shown production systems with different technologic levels, and also different operational costs. The objective of this study was to characterize deeply the different kind of beekeeper by the level of technology used in the production system and his social and economic profile. It was applied 25 questionnaires over a sample of beekeepers. The methodology used was the Multivariate analysis. Small beekeepers are related with low productivity, loss in scale of production, pasture apiculture near from home, participation on rural neighborhood association. The group of big beekeepers is related with high productivity, great number of beehives, visits twice a week at the apiculture pasture and participation on a specific beekeepers association.
ANÁLISE ECONÔMICA DA PRODUÇÃO DE TILÁPIAS EM UMA PROPRIEDADE ASSOCIATIVISTA DE ILHA SOLTEIRA/SP
Creators: name: Sabbag, Omar Jorge
name: Sabbag, Omar Jorge
Publisher: name: Unknown
Year: 2008
Subjects: subject: Livestock Production/Industries
subject: piscicultura
subject: custos de produção
subject: rentabilidade
subject: fish farming
subject: production costs
subject: profitability

description: O Brasil possui imenso potencial para o desenvolvimento da piscicultura, através de seus 5,5 milhões de hectares de reservatórios de águas doces, sendo que a criação de tilápias (Oreochromis niloticus) em sistemas de tanques-rede instalados em grandes reservatórios, é merecedora de destaque. O presente trabalho objetiva avaliar o custo de produção e a rentabilidade do cultivo de tilápia em tanques-rede de 18 m3, para uma associação de piscicultores (APROAQUA), no Município de Ilha Solteira/SP, tendo por base um estudo de caso para um ciclo produtivo de 180 dias em 0,5 ha, com 60 tanques-rede e produtividade de 68.000 Kg/ciclo. As estimativas de investimento e custos de produção foram baseadas no Custo Operacional Total utilizada pelo Instituto de Economia Agrícola. Os resultados mostraram a viabilidade econômica da produção de tilápias em tanques rede, obtendo uma taxa de lucratividade 22,57% e que ainda podem ser melhorados através de uma forma estratégica de comercialização conjunta na fase pré-produção, possibilitando uma diminuição significativa nos custos de produção.---------------------------------------------Brazil possesses immense potential for the development of the fish farming, through their 5,5 million hectares of reservoirs of fresh water, and the tilápias creation (Oreochromis niloticus) in tank-net systems installed in great reservoirs, it is worthy of prominence. The present work aims at to evaluate the production cost and the profitability of the tilápia cultivation in tank-net of 18 m3, for fish farmers association (APROAQUA), in Ilha Solteira, State of São Paulo, tends for base a case study for a productive cycle of 180 days in 0,5 ha, with 60 tank-net and productivity of 68.000 Kg/cycle. The investment estimates and production costs were based on the Cost Operational Total used by the Institute of Agricultural Economy. The results showed the economical viability of the tilápias production in tanks net, obtaining a tax of profitability 22,57% and that they can still be improved through a strategic form of united commercialization in the before production phase, making possible a significant decrease in the production costs.
When Hurricanes Go Viral: The influence of social media on Eastern North Carolinians' evacuation decision making
Creators: name: O'Reilly, Rachel
Publisher: name: Zenodo
Year: 2021
Subjects: Social Media
Evacuation Decision Making
Fake News

description: This study describes a questionnaire survey of residents in Eastern North Carolina. The survey was conducted to assess Eastern North Carolina residents’ social media habits, their perception of risk to extreme weather events, how they use social media to decide whether to follow evacuation orders, and their trust in authorities during a crisis. Eastern North Carolina is a high-risk area that is uniquely vulnerable to hurricanes and flooding. Despite mandatory evacuation orders, many people in high-risk areas like Eastern North Carolina do not evacuate. There is a multitude of personal, social, and experiential factors that go into the evacuation decision making process. Social media has become a popular information source people seek to determine their level of risk to a disaster. This study seeks to understand the implications of social media use for evacuation decision making and its potential influence on perceptions of risk to crises.
Electronic and magnetic properties of the Jahn-Teller active fluoride $\mathrm{NaCrF_{3}}$ from first-principles calculations
Creators: name: Bao, Jianghan
name: Wang, Di
name: Lu, Hai-Zhou
name: Wan, Xiangang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In perovskite-type compounds, the interplay of cooperative Jahn-Teller effect, electronic correlations and orbital degree of freedom leads to intriguing properties. $\mathrm{NaCrF_{3}}$ is a newly synthesized Jahn-Teller active fluoroperovskite where the $\mathrm{CrF_{6}^{4-}}$ octahedrons are considerably distorted. Based on the first-principles calculation, we analyze its electronic structure and magnetic properties. Our numerical results show that the $\mathrm{Cr^{2+}}$ ions adopt the high-spin $t_{2g\uparrow}^{3}e_{g\uparrow}^{1}$ configuration with $G$-type orbital ordering. We also estimate the magnetic exchange couplings and find that the in-plane and interplanar nearest-neighbor interactions are ferromagnetic and antiferromagnetic, respectively. The ground state of this material is $A$-type antiferromagnetic, in agreement with the experiments. Reasonable Curie-Weiss and $\mathrm{N\acute{e}el}$ temperatures compared to the experiments are given by mean-field approximation theory. Our results give a complete explanation of its electronic structure, magnetic and orbital order, and help to further comprehend the behaviors of Jahn-Teller active perovskite-type fluoride.
title: Local Autonomy under Hierarchy: Steering policy implementation in the Xi Jinping era
Creators: name: Song, Xiance
Publisher: name: Universität Tübingen
Year: 2025
Subjects: subject: 320
subject: local autonomy
subject: Top-Level Design
subject: policy implementation
subject: initiative-immunity framework
subject: business environment evaluation
subject: political steering theory

description: Through a comparison between policy documents in the Xi Jinping and Hu Jintao eras, and a thorough examination of three typical policy areas, this research investigates how much local autonomy is preserved in the Xi era on two dimensions — “initiative” and “immunity”; and explains how the policy process is influenced. By appropriately defining the two dimensions in the context of China and measuring them, the text analysis demonstrates that local autonomy in the Xi era has been largely constrained, as many studies argued. Moreover, the comparative analysis of the Classification of Domestic Waste, COVID-19 Pandemic Control and Business Environment Evaluation shows that even in the Xi era, different types of local autonomy are indeed still granted to local governments. Finally, through in-depth interviews, on-site observation and a close reading of relevant policy documents and secondary materials, this research traces the policy process of Business Environment Evaluation through the hierarchy, and documents how it is adapted for implementation in two distinct provinces according to their respective preferences. The findings reveal that even though local governments are given the initiative in conducting Business Environment Evaluation, it is difficult for provinces to balance between contradictory policy goals in Xi Jinping’s Top-Level Design era. The findings bring forward the core argument, local autonomy under hierarchy, which means during the Xi era, local autonomy is not only largely restrained but closely scrutinized by the central state. The central state could recalibrate the degree of granted autonomy according to its judgement of the linkage between a policy area and the interest of the political system. Under such a scheme, policy implementation is rarely effective. This research suggests that, faced with the challenge of the declining legitimacy of the Chinese political system, “local autonomy under hierarchy” is put forward as the Xi administration’s response. However, old problems in implementation persist as new ones arise: the huge pressure exerted from above is eventually undertaken by the grassroots government and the public. Effective policy implementation becomes hardly attainable.
On K(E_9)
Creators: name: Nicolai, H.
name: Samtleben, H.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the maximal compact subgroup K(E_9) of the affine Lie group E_9(9) and its on-shell realization as an R symmetry of maximal N=16 supergravity in two dimensions. We first give a rigorous definition of the group K(E_9), which lives on the double cover of the spectral parameter plane, and show that the infinitesimal action of K(E_9) on the chiral components of the bosons and the fermions is determined in terms of an expansion of the Lie algebra of K(E_9) about the two branch points of this cover; this implies in particular that the fermions of N=16 supergravity transform in a spinor representation of K(E_9). The fermionic equations of motion can be fitted into the lowest components of a single K(E_9) covariant `Dirac equation', with the linear system of N=16 supergravity as the gauge connection. These results suggest the existence of an `off-shell' realization of K(E_9) in terms of an infinite component spinor representation. We conclude with some coments on `generalized holonomies' of M theory.
description: 25 pages, LaTeX2e
Recoverability of Causal Effects under Presence of Missing Data: a Longitudinal Case Study
Creators: name: Holovchak, Anastasiia
name: McIlleron, Helen
name: Denti, Paolo
name: Schomaker, Michael
Publisher: name: arXiv
Year: 2024
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Missing data in multiple variables is a common issue. We investigate the applicability of the framework of graphical models for handling missing data to a complex longitudinal pharmacological study of children with HIV treated with an efavirenz-based regimen as part of the CHAPAS-3 trial. Specifically, we examine whether the causal effects of interest, defined through static interventions on multiple continuous variables, can be recovered (estimated consistently) from the available data only. So far, no general algorithms are available to decide on recoverability, and decisions have to be made on a case-by-case basis. We emphasize sensitivity of recoverability to even the smallest changes in the graph structure, and present recoverability results for three plausible missingness directed acyclic graphs (m-DAGs) in the CHAPAS-3 study, informed by clinical knowledge. Furthermore, we propose the concept of ``closed missingness mechanisms'' and show that under these mechanisms an available case analysis is admissible for consistent estimation for any type of statistical and causal query, even if the underlying missingness mechanism is of missing not at random (MNAR) type. Both simulations and theoretical considerations demonstrate how, in the assumed MNAR setting of our study, a complete or available case analysis can be superior to multiple imputation, and estimation results vary depending on the assumed missingness DAG. Our analyses demonstrate an innovative application of missingness DAGs to complex longitudinal real-world data, while highlighting the sensitivity of the results with respect to the assumed causal model.
description: Updated after revision
Tuning of charge density wave transitions in LaAu$_x$Sb$_2$ by pressure and Au-stoichiometry
Creators: name: Xiang, Li
name: Ryan, Dominic H.
name: Straszheim, Warren E.
name: Canfield, Paul C.
name: Bud'ko, Sergey L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Two charge density wave transition can be detected in LaAu$_x$Sb$_2$ at ~ 110 and ~ 90 K by careful electrical transport measurements. Whereas control of the Au site occupancy in LaAu$_x$Sb$_2$ (for 0.9 < x < 1.0) can suppress each of these transitions by ~ 80 K, the application of hydrostatic pressure can completely suppress the lower transition by ~ 10 kbar and the upper transition by ~ 17 kbar. Clear anomalies in the resistance as well as the magnetoresistance are observed to coincide with the pressures at which the charge density wave transitions are driven to zero.