cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
AVALIAÇÃO DA EFICIÊNCIA DAS COOPERATIVAS AGROINDUSTRIAIS PARANAENSES: UMA ABORDAGEM ECONÔMICA E SOCIAL UTILIZANDO DEA
Creators: name: Peixe, Julines Bega
name: Protil, Roberto Max
name: Peixe, Julines Bega
name: Protil, Roberto Max
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Cooperativas Agroindustriais
subject: Eficiência Econômica
subject: Eficiência Social
subject: Agro-industrial Cooperatives
subject: Economic Efficiency
subject: Social Efficiency

description: É perceptível a grande preocupação em avaliar a eficiência das organizações cooperativas de modo a estabelecer indicadores e padrões de análise, porém ainda não é possível encontrar na literatura quais são as práticas de referência para cooperativas agroindustriais capazes de possibilitar maior eficiência considerando a dimensão econômica e social destas instituições. Notou-se, diante da realização deste estudo, que alguns indicadores utilizados para mensurar eficiência social são influenciados diretamente por indicadores estritamente econômicos. A partir daí buscou-se alçar novas variáveis capazes de gerar indicadores de eficiência social sem que estas sofressem influência direta de variáveis econômicas. O objetivo inicial deste trabalho foi dissertar sobre uma melhor forma de avaliar a eficiência de organizações cooperativas agropecuárias paranaenses partindo de um estudo realizado anteriormente por Oliveira Jr. (1996) em conjunto com a OCEPAR. A partir deste estudo, propôs-se avaliar a eficiência das cooperativas agroindustriais paranaenses através da técnica DEA- Data Envelopment Analysis, com a finalidade de se encontrar as melhores práticas organizacionais. A proposta de utilização da técnica DEA deu-se pelo fato dela estender o conceito tradicional da eficiência técnica à filosofia do benchmarking.---------------------------------------------It is perceivable the great concern in evaluating the efficiency of the cooperative organizations in order to establish pointers and standards of analysis, however is not possible to find in literature which is the reference practices for agro-industrial cooperatives capable to make possible greater efficiency considering economic and social dimension of these institutions. It was noticed, ahead of the accomplishment of this study, that some pointers used to measure social efficiency are influenced directly by strict economic pointers. This fact stimulates the search of new variable, which are capable to generate social efficiency pointers without that these suffer direct influence from economic variable. The initial objective of this work was to research one better form to evaluate the efficiency of agro-industrial cooperative organizations leaving of a study carried through for Oliveira Jr. (1996) together with the OCEPAR. With the purpose of finding the best management practices it was considered to evaluate the efficiency of the agro-industrial cooperatives of state Paraná in Brazil using DEA- Date Envelopment Analysis. DEA was opted because it extends the traditional concept of the efficiency technique to the philosophy of benchmarking.
Additional file 1 of Quality of care in prevention, detection and management of postpartum hemorrhage in hospitals in Afghanistan: an observational assessment
Creators: name: Ansari, Nasratullah
name: Maruf, Farzana
name: Partamin Manalai
name: Currie, Sheena
name: Soroush, Mohammad Samim
name: Sher Shah Amin
name: Higgins-Steele, Ariel
name: Kim, Young Mi
name: Stekelenburg, Jelle
name: Roosmalen, Jos Van
name: Tappis, Hannah
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: Developmental Biology
subject: Science Policy
subject: Hematology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1.
Fractional Moment Estimates for Random Unitary Operators
Creators: name: Joye, Alain
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mathematical Physics (math-ph)
subject: Spectral Theory (math.SP)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 81Q05; 47B80

description: We consider unitary analogs of $d-$dimensional Anderson models on $l^2(\Z^d)$ defined by the product $U_ω=D_ωS$ where $S$ is a deterministic unitary and $D_ω$ is a diagonal matrix of i.i.d. random phases. The operator $S$ is an absolutely continuous band matrix which depends on parameters controlling the size of its off-diagonal elements. We adapt the method of Aizenman-Molchanov to get exponential estimates on fractional moments of the matrix elements of $U_ω(U_ω-z)^{-1}$, provided the distribution of phases is absolutely continuous and the parameters correspond to small off-diagonal elements of $S$. Such estimates imply almost sure localization for $U_ω$.
Additional file 8 of Formation of ultralong DH regions through genomic rearrangement
Creators: name: Brevin A. Smider
name: Smider, Vaughn V.
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 8: Figure S8. Fusion analysis of IGHD members to form IGHD8–2 homologs.
Policy narratives, localisation, and public justification: responses to COVID-19
Creators: name: Mintrom, Michael
name: Rublee, Maria Rost
name: Bonotti, Matteo
name: Zech, Steven T.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: Plant Biology
subject: FOS: Biological sciences

description: Globally, infection and death rates from COVID-19 vary dramatically. While states had broadly the same information about the virus at the start of the crisis, responses were very different. What caused such disparity in policy actions and outcomes? While various factors may account for divergent responses, we highlight the importance of narratives employed by key policy actors. First, we review the literature on policy narratives. We suggest it can be usefully augmented with consideration of localisation and public justification. We apply this augmented framework using case studies of Germany and the United Kingdom. Chancellor Angela Merkel’s narrative was more successful at persuading German citizens to embrace government policies to counter COVID-19 than was Prime Minister Boris Johnson’s in the United Kingdom. This difference held important implications for policy outcomes in each country. We conclude by discussing the benefits of this augmented approach to analysis of policy narratives.
Self-Updating Models with Error Remediation
Creators: name: Doak, Justin E.
name: Smith, Michael R.
name: Ingram, Joey B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: I.2.6

description: Many environments currently employ machine learning models for data processing and analytics that were built using a limited number of training data points. Once deployed, the models are exposed to significant amounts of previously-unseen data, not all of which is representative of the original, limited training data. However, updating these deployed models can be difficult due to logistical, bandwidth, time, hardware, and/or data sensitivity constraints. We propose a framework, Self-Updating Models with Error Remediation (SUMER), in which a deployed model updates itself as new data becomes available. SUMER uses techniques from semi-supervised learning and noise remediation to iteratively retrain a deployed model using intelligently-chosen predictions from the model as the labels for new training iterations. A key component of SUMER is the notion of error remediation as self-labeled data can be susceptible to the propagation of errors. We investigate the use of SUMER across various data sets and iterations. We find that self-updating models (SUMs) generally perform better than models that do not attempt to self-update when presented with additional previously-unseen data. This performance gap is accentuated in cases where there is only limited amounts of initial training data. We also find that the performance of SUMER is generally better than the performance of SUMs, demonstrating a benefit in applying error remediation. Consequently, SUMER can autonomously enhance the operational capabilities of existing data processing systems by intelligently updating models in dynamic environments.
description: 17 pages, 13 figures, published in the proceedings of the Artificial Intelligence and Machine Learning for Multi-Domain Operations Applications II conference in the SPIE Defense + Commercial Sensing, 2020 symposium
Complete Spectrum of Long Operators in N=4 SYM at One Loop
Creators: name: Beisert, N.
name: Kazakov, V. A.
name: Sakai, K.
name: Zarembo, K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We construct the complete spectral curve for an arbitrary local operator, including fermions and covariant derivatives, of one-loop N=4 gauge theory in the thermodynamic limit. This curve perfectly reproduces the Frolov-Tseytlin limit of the full spectral curve of classical strings on AdS_5xS^5 derived in hep-th/0502226. To complete the comparison we introduce stacks, novel bound states of roots of different flavors which arise in the thermodynamic limit of the corresponding Bethe ansatz equations. We furthermore show the equivalence of various types of Bethe equations for the underlying su(2,2|4) superalgebra, in particular of the type "Beauty" and "Beast".
description: Dedicated to the memory of Hans Bethe, 50 pages, v2: references added, minor corrections, v3: reference, typo, to appear in JHEP
CARACTERIZAÇÃO DOS ASPECTOS E IMPACTOS ECONÔMICOS, SOCIAIS E AMBIENTAIS DO SETOR SUCROALCOOLEIRO PAULISTA.
Creators: name: Alvarenga, Rafael Pazeto
name: Queiroz, Timoteo Ramos
name: Alvarenga, Rafael Pazeto
name: Queiroz, Timoteo Ramos
Publisher: name: Unknown
Year: 2008
Subjects: subject: Crop Production/Industries
subject: cana-de-açúcar
subject: Tupã
subject: sustentabilidade
subject: aspectos e impactos ambiental
subject: econômico
subject: social
subject: sugar cane
subject: sustainability
subject: aspects and impacts economic
subject: social and environmental

description: O presente trabalho tem como objetivo a caracterização dos aspectos e impactos econômicos, sociais e ambientais da monocultura da cana-de-açúcar. Isso servirá para que posteriormente se possa fazer um estudo sobre os impactos que a monocultura da cana acarretará a região de Tupã/SP. Em sua confecção foram consultados sites governamentais, teses e dissertações como também bibliografia pertinente ao tema. Os problemas sociais e ambientais causados pela cana nem sempre recebem o destaque merecido. O setor sucroalcooleiro é a fonte de renda de milhares de trabalhadores e o responsável pela produção de um combustível limpo e renovável. No entanto, a forma como a mão-de-obra é utilizada no corte da cana é exaustiva e degradante. Seus subprodutos vinhaça e torta-de-filtro são usados muitas vezes de forma indiscriminada no solo, causando impactos graves. Deve se preparar o a região para a chegada dessa nova cultura. Ao se promover um estudo que prime por uma análise dessas três diretrizes, ter-se-á dados e informações para a condução de políticas públicas visando o desenvolvimento local e sustentável. Isso, para que haja equidade entre os aspectos ambientais, sociais e econômicos e não a sobreposição de um pelo outro.---------------------------------------------This paper aims to make a characterization of the aspects and impacts economic, social and environmental of sugar cane monoculture. This will serve to a later study on the impacts that the monoculture of cane will lead the region of Tupã/SP. In its process were consulted governmental sites, theses and dissertations as well as literature relevant to the theme. The social and environmental problems caused by the cane do not always receive the emphasis deserved. The sugar cane-based sector is the source of income for thousands of workers and responsible for the production of clean and renewable fuel. However, the way the labour is used to cut the cane is comprehensive and degrading. His byproducts vinasse and “torta-de-filtro” is used many times in a indiscriminate way in the soil, causing serious impacts. It must be prepared to region to the arrival of this new culture. When promoting a study that aims an analysis of these three guidelines, shall take data and information to the conduct of public policies aiming at developing local and sustainable. That, to achieve equity between the environmental, social and economic rather than an overlapping the other.
Quantum sensing of a coherent single spin excitation in a nuclear ensemble
Creators: name: Jackson, Daniel M.
name: Gangloff, Dorian A.
name: Bodey, Jonathan H.
name: Zaporski, Leon
name: Bachorz, Clara
name: Clarke, Edmund
name: Hugues, Maxime
name: Gall, Claire Le
name: Atatüre, Mete
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The measurement of single quanta in a collection of coherently interacting objects is transformative in the investigations of emergent quantum phenomena. An isolated nuclear-spin ensemble is a remarkable platform owing to its coherence, but detecting its single spin excitations has remained elusive. Here, we use an electron spin qubit in a semiconductor quantum dot to sense a single nuclear-spin excitation (a nuclear magnon) with 1.9-ppm precision via the 200-kHz hyperfine shift on the 28-GHz qubit frequency. We demonstrate this single-magnon precision across multiple modes identified by nuclear species and polarity. Finally, we monitor the coherent dynamics of a nuclear magnon and the emergence of quantum correlations competing against decoherence. A direct extension of this work is to probe engineered quantum states of the ensemble including long-lived memory states.
Low Energy Supersymmetry From the Landscape
Creators: name: Dine, Michael
name: Gorbatov, Elie
name: Thomas, Scott
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: There has been some debate as to whether the landscape does or does not predict low energy supersymmetry. We argue that under rather mild assumptions, the landscape seems to favor such breaking, quite possibly at a very low scale. Some of the issues which must be addressed in order to settle these questions are the relative frequency with which tree level and non-perturbative effects generate expectation values for auxillary fields and the superpotential, as well as the likelihood of both $R$- and non-$R$ discrete or accidental symmetries. Alternate scenarios with warped compactifications or large extra dimensions are also discussed.
description: latex, 19 pages
Hydrostatic and uniaxial pressure tuning of iron-based superconductors: Insights into superconductivity, magnetism, nematicity and collapsed tetragonal transitions
Creators: name: Gati, Elena
name: Xiang, Li
name: Bud'ko, Sergey L.
name: Canfield, Paul C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Iron-based superconductors are well-known for their intriguing phase diagrams, which manifest a complex interplay of electronic, magnetic and structural degrees of freedom. Among the phase transitions observed are superconducting, magnetic, and several types of structural transitions, including a tetragonal-to-orthorhombic and a collapsed-tetragonal transition. In particular, the widely-observed tetragonal-to-orthorhombic transition is believed to be a result of an electronic order that is coupled to the crystalline lattice and is, thus, referred to as nematic transition. Nematicity is therefore a prominent feature of these materials, which signals the importance of the coupling of electronic and lattice properties. Correspondingly, these systems are particularly susceptible to tuning via pressure (hydrostatic, uniaxial, or some combination). We review efforts to probe the phase diagrams of pressure-tuned iron-based superconductors, with a strong focus on our own recent insights into the phase diagrams of several members of this material class under hydrostatic pressure. These studies on FeSe, Ba(Fe$_{1-x}$Co$_x$)$_2$As$_2$, Ca(Fe$_{1-x}$Co$_x$)$_2$As$_2$ and CaK(Fe$_{1-x}$Ni$_x$)$_4$As$_4$ were, to a significant extent, made possible by advances of what measurements can be adapted to the use under differing pressure environments. We point out the potential impact of these tools for the study of the wider class of strongly correlated electron systems.
description: 31 pages, 17 figures, submitted to Annalen der Physik
A self-consistent perturbative evaluation of ground state energies: application to cohesive energies of spin lattices
Creators: name: Hajj, Mohamad Al
name: Malrieu, Jean-Paul
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The work presents a simple formalism which proposes an estimate of the ground state energy from a single reference function. It is based on a perturbative expansion but leads to non linear coupled equations. It can be viewed as well as a modified coupled cluster formulation. Applied to a series of spin lattices governed by model Hamiltonians the method leads to simple analytic solutions. The so-calculated cohesive energies are surprisingly accurate. Two examples illustrate its applicability to locate phase transition.
description: Accepted by Phys. Rev. B
Efficient estimation of semiparametric varying-coefficient partially linear transformation model with current status data
Creators: name: Al-Mosawi, Riyadh
name: Lu, Xuewen
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Space Science
subject: Medicine
subject: Neuroscience
subject: Biotechnology
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: We consider a varying-coefficient partially linear transformation model with current status data, which extends several semiparametric models for current status data in the literature. Sieve maximum likelihood estimation method is used to obtain an integrated estimate for both the parametric components and nonparametric components in the model, i.e. the linear regression coefficients, the varying-coefficient functions and the baseline survival function. Under some regularity conditions, the proposed parameter estimators are proved to be semiparametrically efficient and asymptotically normal, and the estimators for the nonparametric functions achieve the optimal rate of convergence. Simulation studies assure the theoretical results, and a real data is reanalysed using the proposed method and it yields new findings.
Characterization of the umbra-penumbra boundary by the vertical component of the magnetic field -- Analysis of ground-based data from the GREGOR Infrared Spectrograph
Creators: name: Lindner, P.
name: Schlichenmaier, R.
name: González, N. Bello
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The vertical component of the magnetic field ($B_\perp$) was found to reach a constant value at the umbra-penumbra boundary of stable sunspots in a recent statistical study of Hinode/SP data. The objective of this work is to verify the existence of a constant value for $B_\perp$ at the umbra-penumbra boundary from ground-based data in the near-infrared wavelengths and to determine its value for GREGOR Infrared Spectrograph (GRIS) data. This is the first statistical study on the Jurcak criterion with ground-based data, and we compare it with the results from Hinode and HMI data. Eleven spectropolarimetric data sets from the GRIS slit-spectograph containing stable sunspots were selected from the GRIS archive (sdc.leibniz-kis.de). SIR inversions including a polarimetric straylight correction are used to produce maps of the magnetic field vector using the Fe 1564.8 and 1566.2 nm lines. Averages of $B_\perp$ along umbra-penumbra boundaries are analyzed for the 11 data sets. Geometric differences between contours at the resulting $B_\perp^{\rm const}$ value and contours in intensity, $ΔP$, are calculated. Averaged over the 11 sunspots, we find a value of $B_\perp=1787\pm100$ gauss. Contours at $B_\perp=B_\perp^{\rm const}$ and contours calculated in intensity maps match from a visual inspection and the geometric distance $ΔP$ was found to be on the order of 2 pixels. Furthermore, the standard deviation between different data sets of averages along umbra--penumbra contours is smaller for $B_\perp$ than for $B_\parallel$ by a factor of 2.4. Our results provide further support to the Jurcak criterion with the existence of an invariable value $B_\perp^{\rm const}$ at the umbra--penumbra boundary. We also found that the geometric difference, $ΔP$, between intensity contours and contours at $B_\perp=B_\perp^{\rm const}$ acts as an index of stability for sunspots.
Additional file 5 of Formation of ultralong DH regions through genomic rearrangement
Creators: name: Brevin A. Smider
name: Smider, Vaughn V.
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 5: Figure S5. Alignment of IGHD7 family members with IGHD8–2.
A conceptual model for the computer simulation of Air Traffic Control Radar Surveillance systems
Creators: name: Adibnia, Reza
Publisher: name: University of British Columbia
Year: 2010

description: The objective of this work is to identify and characterize a fundamental set of abstractions to design a software tool to simulate the behaviour of one or more Air Traffic Control (ATC) Primary Surveillance Radar (PSR) and Secondary Surveillance Radar (SSR) systems. The Air Traffic Control (ATC) radar data is very important in the provision of ATC services. Air traffic controllers use radar data to assure the separation of aircraft. Radar data contains information about the altitude of an aircraft. It also may have indications of emergency conditions transmitted by means of a transponder from an aircraft to a radar source on the ground. Simulating the generation of these radar data is important for training ATC operators and testing other ATC equipment that uses radar surveillance data as input. To simulate the generation of radar data, it is required to simulate aircraft, surveillance radar and the environment between aircraft and radar, which may consists of simulation of weather conditions and obstructions. Simulation provides useful means to analyze and study the reaction of ATC radar system against different conditions. In particular, simulation avoids the high cost and often high risk of using real inputs (i.e., flying real aircraft) for the purposes of training and equipment testing We have also demonstrated the practical application of the concepts presented in this dissertation through the implementation of an ATC radar simulation tool.
An algebraic SU(1,1) solution for the relativistic hydrogen atom
Creators: name: Martínez-y-Romero, R. P.
name: Núñez-Yépez, H. N.
name: Salas-Brito, A. L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The bound eigenfunctions and spectrum of a Dirac hydrogen atom are found taking advantage of the $SU(1, 1)$ Lie algebra in which the radial part of the problem can be expressed. For defining the algebra we need to add to the description an additional angular variable playing essentially the role of a phase. The operators spanning the algebra are used for defining ladder operators for the radial eigenfunctions of the relativistic hydrogen atom and for evaluating its energy spectrum. The status of the Johnson-Lippman operator in this algebra is also investigated.
description: to appear in Physics Letters A (2005). We corrected a misprint in page 7, in the paragraph baggining with "With the value of ..." the ground state should be |\lambda, \lambda>, not |\lambda, \lambda+1>
A no-go theorem for the Majorana fermion on a lattice
Creators: name: Suzuki, Hiroshi
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A variant of the Nielsen--Ninomiya no-go theorem is formulated. This theorem states that, under several assumptions, it is impossible to write down a doubler-free Euclidean lattice action of a single Majorana fermion in $8k$ and $8k+1$ dimensions.
description: 8 pages, uses PTPTeX. The final version to appear in Prog. Theor. Phys
Dislocation as a bulk probe of higher-order topological insulators
Creators: name: Roy, Bitan
name: Juricic, Vladimir
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Topological materials occupy the central stage in the modern condensed matter physics because of their robust metallic edge or surface states protected by the topological invariant, characterizing the electronic band structure in the bulk. Higher-order topological (HOT) states extend this usual bulk-boundary correspondence, so they host the modes localized at lower-dimensional boundaries, such as corners and hinges. Here we theoretically demonstrate that dislocations, ubiquitous defects in crystalline materials, can probe higher-order topology, recently realized in various platforms. We uncover that HOT insulators respond to dislocations through symmetry protected finite-energy in-gap electronic modes, localized at the defect core, which originate from an interplay between the orientation of the HOT mass domain wall and the Burgers vector of the dislocation. As such, these modes become gapless only when the Burgers vector points toward lower-dimensional gapless boundaries. Our findings are consequential for the systematic probing of the extended bulk-boundary correspondence in a broad range of HOT crystals, and photonic and phononic or mechanical metamaterials through the bulk topological lattice defects.
description: Published version: 17 Pages, 6 Figures & 3 Tables
O contributo da ciência cidadã para o levantamento de biodiversidade marinha - o projeto ANERIS e a plataforma MINKA
Creators: name: Monteiro, Cátia
name: Nieto-Vilela, Rocío
name: Humet, Mar
Publisher: name: Zenodo
Year: 2024

description: Presentation in the Portuguesse national workshop: 4º Encontro Nacional de Ciência Cidadã (ENCC2023)

https://www.cienciacidada.pt/encontrocc2023/
Asymmetric surface wave excitation through metasurface-edge diffraction
Creators: name: Camacho, Miguel
name: Capolino, Filippo
name: Albani, Matteo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: The selective excitation of localized surface wave modes remains a challenge in the design of both leaky-wave and bound-wave devices. In this Letter, we show how the truncation of a metasurface can play an important role in breaking the spatial inversion symmetry in the excitation of surface waves supported by the structure. This is done by combining a large anisotropy in the dispersion relation and the presence of an edge which also serves as a coupling mechanism between the plane wave excitation and the induced surface waves. By resorting to the exact solution of the scattering problem based on a discrete Wiener-Hopf technique we show that by inverting the component of the impinging wavevector parallel to the truncation, two distinct surface waves are excited.
description: Accepted manuscript (Optics Letters)
Boundary Conformal Field Theory
Creators: name: Cardy, John
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Boundary conformal field theory (BCFT) is simply the study of conformal field theory (CFT) in domains with a boundary. It gains its significance because, in some ways, it is mathematically simpler: the algebraic and geometric structures of CFT appear in a more straightforward manner; and because it has important applications: in string theory in the physics of open strings and D-branes, and in condensed matter physics in boundary critical behavior and quantum impurity models. In this article, however, I describe the basic ideas from the point of view of quantum field theory, without regard to particular applications nor to any deeper mathematical formulations.
description: 17 pages, 2 figures; v.2: corrected ghastly mistake in Eq. (41), and a missing author reference
A CADEIA AGROINDUSTRIAL DE FUMOS CLAROS DO SUL DO BRASIL E A “CONVENÇÃO-QUADRO PARA O CONTROLE DO TABACO”: ESTRATÉGIAS E PERSPECTIVAS
Creators: name: Silva, Leonardo Xavier Da
name: Silva, Leonardo Xavier Da
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Crop Production/Industries
subject: cadeia agroindustrial
subject: fumos claros
subject: sul do Brasil
subject: convenção-quadro
subject: agro industrial chain
subject: tobacco to cigarette
subject: south of Brazil
subject: Framework Convention

description: A cadeia agroindustrial do tabaco no sul do Brasil está estruturada a partir de dois grupos distintos. De um lado, centenas de milhares de pequenos agricultores e, de outro, uma indústria constituída por um oligopólio de capital multinacional. A produção é a de fumos claros, cujo principal mercado é o externo, que o compra para transformá-lo em cigarros. O Brasil é o líder mundial dos negócios em tabaco para cigarros e nos últimos três anos têm-se colocado diante de um fato novo: a Convenção-Quadro para o controle do Tabaco, documento confeccionado e assinado por mais de cem países e cujo objetivo é reduzir a produção da folha no mundo. As reações dos agentes da cadeia têm sido distintas. Pelo lado dos agricultores, instituições como a Associação dos Fumicultores do Brasil (AFUBRA) têm mostrado preocupação com a possível redução do plantio do produto, já que o mesmo é a principal fonte de renda para centenas de milhares de pequenas propriedades nos três estados do Sul do País. Pelo lado da indústria, tranqüilidade diante do risco da redução da produção do produto. Assim, a produção avança, apesar dos temores da extinção da cultura no Brasil.--------------------------------------------The agro industrial chain of tobacco placed in south of Brazil is formed for two different groups. For one side, hundred of thousand small farmers and, for the other one, an industry composed for an oligopoly with multinational capital. The chain produces tobacco to be transformed in cigarettes. The main market is the external. The Brazil has the worldwide leadership in this business. However a new situation is post: the WHO Framework Convention on Tobacco Control (WHO FCTC), a signed document for more than hundred countries, including Brazil. The aimed is to reduce the production of this leaf around the world. The reaction of the agents of the chain has been distinct. For the small farms side, institutions like Associação dos Fumicultores do Brasil (AFUBRA) shows preoccupation about reduction of plant areas. For the industry side, there is tranquility before the risk of that reduction. So, the production goes on, in spite of fear of the end of this activity.
Additional file 6 of Formation of ultralong DH regions through genomic rearrangement
Creators: name: Brevin A. Smider
name: Smider, Vaughn V.
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 6: Figure S6. Identification ultralong IGHD region homologs in Bos taurus, Bos grunniens and Bison bison.
Additional file 7 of Formation of ultralong DH regions through genomic rearrangement
Creators: name: Brevin A. Smider
name: Smider, Vaughn V.
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 7: Figure S7. Alignment of IGHD3 and IGHD6 family members with IGHD8–2.
Variance estimation for the instrumental variables approach to measurement error in generalized linear models
Creators: name: Hardin, James W.
name: Carroll, Raymond J.
name: Hardin, James W.
name: Carroll, Raymond J.
Publisher: name: Unknown
Year: 2003
Subjects: subject: Research Methods/ Statistical Methods
subject: sandwich estimate of variance
subject: measurement error
subject: White's estimator
subject: robust variance
subject: generalized linear models
subject: instrumental variables

description: This paper derives and gives explicit formulas for a derived sandwich variance estimate. This variance estimate is appropriate for generalized linear additive measurement error models fitted using instrumental variables. We also generalize the known results for linear regression. As such, this article explains the theoretical justification for the sandwich estimate of variance utilized in the software for measurement error developed under the Small Business Innovation Research Grant (SBIR) by StataCorp. The results admit estimation of variance matrices for measurement error models where there is an instrument for the unknown covariate.
Entangling ability of a beam splitter in the presence of temporal which-path information
Creators: name: van Velsen, J. L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We calculate the amount of polarization-entanglement induced by two-photon interference at a lossless beam splitter. Entanglement and its witness are quantified respectively by concurrence and the Bell-CHSH parameter. In the presence of a Mandel dip, the interplay of two kinds of which-path information -- temporal and polarization -- gives rise to the existence of entangled polarization-states that cannot violate the Bell-CHSH inequality.
description: 8 pages including 2 figures
Instrumental variables, bootstrapping, and generalized linear models
Creators: name: Hardin, James W.
name: Schmiediche, Henrik
name: Carroll, Raymond J.
name: Hardin, James W.
name: Schmiediche, Henrik
name: Carroll, Raymond J.
Publisher: name: Unknown
Year: 2003
Subjects: subject: Research Methods/ Statistical Methods
subject: measurement error
subject: instrumental variables
subject: Murphy–Topel
subject: bootstrap
subject: generalized linear models

description: This paper discusses and illustrates the qvf command for fitting generalized linear models. The differences between this new command and Stata’s glm command are highlighted. One of the most notable features of the qvf command is its ability to include instrumental variables. This functionality was added specifically to address measurement error but may be utilized by the user for other purposes. The qvf command was developed in the C-language using Stata’s new plugin features and executes much faster than the glm ado-file.
Non-positivity of Groenewold operators
Creators: name: Bracken, A. J.
name: Wood, J. G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A central feature in the Hilbert space formulation of classical mechanics is the quantisation of classical Liouville densities, leading to what may be termed term Groenewold operators. We investigate the spectra of the Groenewold operators that correspond to Gaussian and to certain uniform Liouville densities. We show that when the classical coordinate-momentum uncertainty product falls below Heisenberg's limit, the Groenewold operators in the Gaussian case develop negative eigenvalues and eigenvalues larger than 1. However, in the uniform case, negative eigenvalues are shown to persist for arbitrarily large values of the classical uncertainty product.
description: 9 pages, 1 figures, submitted to Europhysics Letters
European agri-environmental policy for the 21st century
Creators: name: Latacz-Lohmann, Uwe
name: Hodge, Ian D.
name: Latacz-Lohmann, Uwe
name: Hodge, Ian D.
Publisher: name: Unknown
Year: 2003
Subjects: Agricultural and Food Policy
Environmental Economics and Policy

description: The present paper reviews the development of agri-environmental policy in Europe and assesses its prospects. While it does so from a predominantly UK perspective, there are many common features of the experience and policy choices across the majority of Member States. The first generation of agri-environmental measures applied command-and-control regulation for the prevention of pollution. Second-generation measures pay farmers for providing environmental public goods. The emphasis on ‘amenity’ derived from the maintenance of agricultural production systems contrasts with policy approaches in Australia and the USA. Well-designed incentive schemes constitute ‘quasi-markets’ for public goods, correcting for a pre-existing market failure. Problems in the delivery of policy include poor spatial targeting and a lack of clarity between environmental and income support objectives. Various changes will be required in order to increase the environmental effectiveness and efficiency of agri-environmental mechanisms.
Engel-like characterization of radicals in finite dimensional Lie algebras and finite groups
Creators: name: Bandman, Tatiana
name: Borovoi, Mikhail
name: Grunewald, Fritz
name: Kunyavskii, Boris
name: Plotkin, Eugene
Publisher: name: arXiv
Year: 2004
Subjects: subject: Group Theory (math.GR)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 20D25; 17B05; 17B01

description: A classical theorem of R. Baer describes the nilpotent radical of a finite group G as the set of all Engel elements, i.e. elements y in G such that for any x in G the n-th commutator [x,y,...,y] equals 1 for n big enough. We obtain a characterization of the solvable radical of a finite dimensional Lie algebra defined over a field of characteristic zero in similar terms. We suggest a conjectural description of the solvable radical of a finite group as the set of Engel-like elements and reduce this conjecture to the case of a finite simple group.
description: 17 pages
Application of generalized power-delay metrics to supply and threshold selection in deep submicron CMOS
Creators: name: Sengupta, Dipanjan
Publisher: name: University of British Columbia
Year: 2009

description: Power consumption has become as important as performance in todays deep submicron designs. As a result, high-level techniques and models must be developed to evaluate design changes in terms of power (energy) and performance tradeoff early in the design process. Recently, designers have been using the energy-delay product as a metric of goodness for CMOS designs due to certain perceived shortcomings of the more traditional power-delay product. As the industry moves to 90nm technology and encountered higher leakage currents, it is appropriate to revisit existing design metrics. In this thesis, a more general view of power and delay metrics for design optimization has been provided along with how these metrics can be used for design optimization. Supply (VDD) and threshold (VT) voltage scaling are two popular methodologies of power reduction. As such, the effect on power and frequency are analyzed and the feasible region of operation is identified in the VDD vs. VT plane. A fundamental relationship is established between the optimal operating points and the generalized design metrics. In addition, new power and delay models are developed for logic blocks that incorporate the effect of VDD and VT . The effect of optimization on power and delay with respect to process, temperature and voltage variation has also been investigated.
Parallel Treatment of Estimation of SU(2) and Phase Estimation
Creators: name: Hayashi, Masahito
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We discuss the accuracy of the estimation of the $n$ identical unknown actions of $\SU(2)$ by using entanglement. This problem has a similar structure with the phase estimation problem, which was discussed by Bužek, Derka, and Massar\cite{BDM}. The estimation error asymptotically decreases to zero with an order of $\frac{1}{n^2}$ at least.
description: I changed the title
The regression-calibration method for fitting generalized linear models with additive measurement error
Creators: name: Hardin, James W.
name: Schmiediche, Henrik
name: Carroll, Raymond J.
name: Hardin, James W.
name: Schmiediche, Henrik
name: Carroll, Raymond J.
Publisher: name: Unknown
Year: 2003
Subjects: subject: Research Methods/ Statistical Methods
subject: regression calibration
subject: measurement error
subject: instrumental variables
subject: replicate measures
subject: generalized linear models

description: This paper discusses and illustrates the method of regression calibration. This is a straightforward technique for fitting models with additive measurement error. We present this discussion in terms of generalized linear models (GLMs) following the notation defined in Hardin and Carroll (2003). Discussion will include specified measurement error, measurement error estimated by replicate error-prone proxies, and measurement error estimated by instrumental variables. The discussion focuses on software developed as part of a small business innovation research (SBIR) grant from the National Institutes of Health (NIH).
Additional file 6 of Fluid removal associates with better outcomes in critically ill patients receiving continuous renal replacement therapy: a cohort study
Creators: name: Hall, Anna
name: Crichton, Siobhan
name: Dixon, Alison
name: Skorniakov, Ilia
name: Kellum, John A.
name: Ostermann, Marlies
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Neuroscience
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Science Policy
subject: Computational Biology

description: Additional file 6 : Table S6. Multivariable analysis based on SOFA score at CRRT initiation.
Use of Wikipedia categories on information retrieval research: a brief review
Creators: name: Tramullas, Jesús
name: Garrido-Picazo, Piedad
name: Sánchez-Casabón, Ana I.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: Wikipedia categories, a classification scheme built for organizing and describing Wikpedia articles, are being applied in computer science research. This paper adopts a systematic literature review approach, in order to identify different approaches and uses of Wikipedia categories in information retrieval research. Several types of work are identified, depending on the intrinsic study of the categories structure, or its use as a tool for the processing and analysis of other documentary corpus different to Wikipedia. Information retrieval is identified as one of the major areas of use, in particular its application in the refinement and improvement of search expressions, and the construction of textual corpus. However, the set of available works shows that in many cases research approaches applied and results obtained can be integrated into a comprehensive and inclusive concept of information retrieval.
Additional file 4 of Formation of ultralong DH regions through genomic rearrangement
Creators: name: Brevin A. Smider
name: Smider, Vaughn V.
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 4: Figure S4. Phylogenetic analysis of intergenic regions from clusters 2 and 3.
The ACS Virgo Cluster Survey. VII. Resolving the Connection Between Globular Clusters and Ultra-Compact Dwarf Galaxies
Creators: name: Hasegan, Monica
name: Jordan, Andres
name: Cote, Patrick
name: Djorgovski, S. G.
name: McLaughlin, Dean E.
name: Blakeslee, John P.
name: Mei, Simona
name: West, Michael J.
name: Peng, Eric W.
name: Ferrarese, Laura
name: Milosavljevic, Milos
name: Tonry, John L.
name: Merritt, David
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the connection between globular clusters and ultra-compact dwarf galaxies (UCDs) by examining the properties of several compact objects associated with M87, all of which were previously classified as globular clusters. Combining imaging from the Hubble Space Telescope with ground-based Keck spectroscopy, we find two objects to have half-light radii, velocity dispersions and mass-to-light ratios that are consistent with the predictions of population synthesis models for old, metal-rich, luminous globular clusters. Three other objects are much larger, with half-light radii of approximately 20pc, and have V-band mass-to-light ratios in the range 6-9. These objects, which we consider to be UCDs, resemble the nuclei of nucleated dwarf elliptical galaxies in Virgo, having similar mass-to-light ratios, luminosities and colors. These UCDs are found to obey the extrapolated scaling relations of galaxies more closely than those of Galactic globular clusters. There appears to be a transition between the two types of stellar systems at a mass of about two million solar masses. If the UCDs are gravitationally bound, then we suggest that the presence of dark matter is the fundamental property distinguishing globular clusters from UCDs. More than half of the UCD candidates uncovered in the ACS Virgo Cluster Survey are associated with a single galaxy -- M87 -- which suggests that proximity to the Virgo center may be of critical importance for the formation of these objects. These results show that distinguishing bonafide UCDs from bright globular clusters requires a careful analysis of their detailed structural and dynamical properties, particularly their mass-to-light ratios. (ABRIDGED)
description: 56 pages, with 17 postscript figures. Accepted for publication in ApJ. Also available at: http://www.physics.rutgers.edu/~pcote/acs/publications.html
In search of the electron electric dipole moment: relativistic correlation calculations of the P,T-violation effect in the ground state of HI$^+$
Creators: name: Isaev, T. A.
name: Mosyagin, N. S.
name: Petrov, A. N.
name: Titov, A. V.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We report the first results of ab initio relativistic correlation calculation of the effective electric field on the electron, E_eff, in the ground state of the HI$^+$ cation. This value is required for interpretation of the suggested experiment on search for the electron electric dipole moment. The generalized relativistic effective core potential, Fock-space relativistic coupled cluster with single and double cluster amplitudes and spin-orbit direct configuration interaction methods are used, followed by nonvariational one-center restoration of the four-component wavefunction in the iodine core. The calculated value of E_eff by the coupled cluster method is E_eff=0.345\times 10^{24}Hz/e*cm. Configuration interaction study gives E_eff=0.336\times 10^{24}Hz/e*cm (our final value). The structure of chemical bonding and contributions to E_eff in HI$^+$ is clarified and significant deviation of our value from that obtained in Ravaine etal Phys.Rev.Lett., 94, 013001 (2005) is explained.
description: 5 pages, submitted to Phys.Rev.Letters. Values of E_eff, A_\parallel and EQq_0 in HI+ calculated by restricted AGRECP/SCF/NOCR added of MS. We have also added data on the hyperfine coupling constant of the proton to molecular axis. Some typographyc errors are corrected