cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Convexity of the self-energy functional in the variational cluster approximation
Creators: name: Nevidomskyy, Andriy H.
name: Sénéchal, David
name: Tremblay, A. -M. S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: In the variational cluster approximation (VCA) (or variational cluster perturbation theory), widely used to study the Hubbard model, a fundamental problem that renders variational solutions difficult in practice is its known lack of convexity at stationary points, i.e. the physical solutions can be saddle points rather than extrema of the self-energy functional. Here we suggest two different approaches to construct a convex functional of the self-energy. In the first approach, one can show analytically that in the approximation where the irreducible particle-hole vertex depends only on center of mass coordinates, the functional is convex away from phase transitions in the corresponding channel. Numerical tests on a tractable version of that functional show that convexity can be a nuisance when looking for instabilities both in the pairing and particle-hole channels. Therefore, an alternative phenomenological functional is proposed. Convexity is explicitly enforced only with respect to a restricted set of variables, such as the cluster chemical potential that is known to be otherwise problematic. Numerical tests show that our functional is convex at the physical solutions of VCA and allows second-order phase transitions in the pairing channel as well. This opens the way to the use of more efficient algorithms to find solutions of the VCA equations.
description: 12 pages, 7 figures
Bounds on Negativity of Superpositions
Creators: name: Ou, Yong-Cheng
name: Fan, Heng
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The entanglement quantified by negativity of pure bipartite superposed states is studied. We show that if the entanglement is quantified by the concurrence two pure states of high fidelity to one another still have nearly the same entanglement. Furthermore this conclusion can be guaranteed by our obtained inequality, and the concurrence is shown to be a continuous function even in infinite dimensions. The bounds on the negativity of superposed states in terms of those of the states being superposed are obtained. These bounds can find useful applications in estimating the amount of the entanglement of a given pure state.
description: 5 pages
Two-Dimensional Dynamics of Ultracold Atoms in Optical Lattices
Creators: name: Snoek, Michiel
name: Hofstetter, Walter
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We analyze the dynamics of ultracold atoms in optical lattices induced by a sudden shift of the underlying harmonic trapping potential. In order to study the effect of strong interactions, dimensionality and lattice topology on transport properties, we consider bosonic atoms with arbitrarily strong repulsive interactions, on a two-dimensional square lattice and a hexagonal lattice. On the square lattice we find insulating behavior for weakly interacting atoms and slow relaxation for strong interactions, even when a Mott plateau is present, which in one dimension blocks the dynamics. On the hexagonal lattice the center of mass relaxes to the new equilibrium for any interaction strength.
description: 4 pages, 6 figures; references added; improved figures
Entangling Independent Photons by Time Measurement
Creators: name: Halder, Matthaeus
name: Beveratos, Alexios
name: Gisin, Nicolas
name: Scarani, Valerio
name: Simon, Christoph
name: Zbinden, Hugo
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A quantum system composed of two or more subsystems can be in an entangled state, i.e. a state in which the properties of the global system are well defined but the properties of each subsystem are not. Entanglement is at the heart of quantum physics, both for its conceptual foundations and for applications in information processing and quantum communication. Remarkably, entanglement can be "swapped": if one prepares two independent entangled pairs A1-A2 and B1-B2, a joint measurement on A1 and B1 (called a "Bell-State Measurement", BSM) has the effect of projecting A2 and B2 onto an entangled state, although these two particles have never interacted or shared any common past[1,2]. Experiments using twin photons produced by spontaneous parametric down-conversion (SPDC) have already demonstrated entanglement swapping[3-6], but here we present its first realization using continuous wave (CW) sources, as originally proposed[2]. The challenge was to achieve sufficiently sharp synchronization of the photons in the BSM. Using narrow-band filters, the coherence time of the photons that undergo the BSM is significantly increased, exceeding the temporal resolution of the detectors. Hence pulsed sources can be replaced by CW sources, which do not require any synchronization[6,7], allowing for the first time the use of completely autonomous sources. Our experiment exploits recent progress in the time precision of photon detectors, in the efficiency of photon pair production by SPDC with waveguides in nonlinear crystals[8], and in the stability of narrow-band filters. This approach is independent of the form of entanglement; we employed time-bin entangled photons[9] at telecom wavelengths. Our setup is robust against thermal or mechanical fluctuations in optical fibres thanks to cm-long coherence lengths.
description: 13 pages, 3 figures
Optimal Linear Precoding Strategies for Wideband Non-Cooperative Systems based on Game Theory-Part II: Algorithms
Creators: name: Scutari, Gesualdo
name: Palomar, Daniel P.
name: Barbarossa, Sergio
Publisher: name: arXiv
Year: 2007
Subjects: subject: Information Theory (cs.IT)
subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Computer and information sciences

description: In this two-part paper, we address the problem of finding the optimal precoding/multiplexing scheme for a set of non-cooperative links sharing the same physical resources, e.g., time and bandwidth. We consider two alternative optimization problems: P.1) the maximization of mutual information on each link, given constraints on the transmit power and spectral mask; and P.2) the maximization of the transmission rate on each link, using finite order constellations, under the same constraints as in P.1, plus a constraint on the maximum average error probability on each link. Aiming at finding decentralized strategies, we adopted as optimality criterion the achievement of a Nash equilibrium and thus we formulated both problems P.1 and P.2 as strategic noncooperative (matrix-valued) games. In Part I of this two-part paper, after deriving the optimal structure of the linear transceivers for both games, we provided a unified set of sufficient conditions that guarantee the uniqueness of the Nash equilibrium. In this Part II, we focus on the achievement of the equilibrium and propose alternative distributed iterative algorithms that solve both games. Specifically, the new proposed algorithms are the following: 1) the sequential and simultaneous iterative waterfilling based algorithms, incorporating spectral mask constraints; 2) the sequential and simultaneous gradient projection based algorithms, establishing an interesting link with variational inequality problems. Our main contribution is to provide sufficient conditions for the global convergence of all the proposed algorithms which, although derived under stronger constraints, incorporating for example spectral mask constraints, have a broader validity than the convergence conditions known in the current literature for the sequential iterative waterfilling algorithm.
description: Paper submitted to IEEE Transactions on Signal Processing, February 22, 2006. Revised March 26, 2007. Accepted June 5, 2007. To appear on IEEE Transactions on Signal Processing, 2007
Scholarships vs. training for happiness gained from education in creativity: an analytical model
Creators: name: Zagonari, Fabio
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: SECS-P/01 Economia politica

description: This paper presents an analytical model of the dynamic interrelationships between education, creativity, and happiness based on both theoretical insights and recent empirical neurological studies. In the model, the outcome is conditional on individual intelligence and risk aversion. 
Specifically, it focuses on two main determinants of creativity (divergent and convergent thinking), and compares two main educational policies (scholarships vs. training) in terms of their impacts on the happiness gained from creativity in the general and healthy population. An empirical test is provided by matching the model’s predictions with the results of recent neuroscience research. Numerical simulations suggested that improving convergent thinking is more important than improving divergent thinking for creativity to generate happiness throughout an individual’s life, provided both divergent and convergent thinking have achieved a sufficiently large degree; and that unstructured training in divergent thinking (e.g., in accounting schools) is necessary to reach richer but less intelligent people, whereas scholarships or unstructured training in convergent thinking (e.g., in art schools) are necessary to reach more intelligent but less rich people.
Hydrodynamics of fluid-solid coexistence in dense shear granular flow
Creators: name: Khain, Evgeniy
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We consider dense rapid shear flow of inelastically colliding hard disks. Navier-Stokes granular hydrodynamics is applied accounting for the recent finding \cite{Luding,Khain} that shear viscosity diverges at a lower density than the rest of constitutive relations. New interpolation formulas for constitutive relations between dilute and dense cases are proposed and justified in molecular dynamics (MD) simulations. A linear stability analysis of the uniform shear flow is performed and the full phase diagram is presented. It is shown that when the inelasticity of particle collision becomes large enough, the uniform sheared flow gives way to a two-phase flow, where a dense "solid-like" striped cluster is surrounded by two fluid layers. The results of the analysis are verified in event-driven MD simulations, and a good agreement is observed.
OkwuGbé: End-to-End Speech Recognition for Fon and Igbo
Creators: name: Dossou, Bonaventure F. P.
name: Emezue, Chris C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Language is inherent and compulsory for human communication. Whether expressed in a written or spoken way, it ensures understanding between people of the same and different regions. With the growing awareness and effort to include more low-resourced languages in NLP research, African languages have recently been a major subject of research in machine translation, and other text-based areas of NLP. However, there is still very little comparable research in speech recognition for African languages. Interestingly, some of the unique properties of African languages affecting NLP, like their diacritical and tonal complexities, have a major root in their speech, suggesting that careful speech interpretation could provide more intuition on how to deal with the linguistic complexities of African languages for text-based NLP. OkwuGbé is a step towards building speech recognition systems for African low-resourced languages. Using Fon and Igbo as our case study, we conduct a comprehensive linguistic analysis of each language and describe the creation of end-to-end, deep neural network-based speech recognition models for both languages. We present a state-of-art ASR model for Fon, as well as benchmark ASR model results for Igbo. Our linguistic analyses (for Fon and Igbo) provide valuable insights and guidance into the creation of speech recognition models for other African low-resourced languages, as well as guide future NLP research for Fon and Igbo. The Fon and Igbo models source code have been made publicly available.
Search for Heavy, Long-Lived Particles that Decay to Photons at CDF II
Creators: name: al., A. Abulencia et
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present the first search for heavy, long-lived particles that decay to photons at a hadron collider. We use a sample of photon+jet+missing transverse energy events in p-pbar collisions at \sqrt{s}=1.96 TeV taken with the CDF II detector. Candidate events are selected based on the arrival time of the photon at the detector. Using an integrated luminosity of 570 pb-1 of collision data, we observe 2 events, consistent with the background estimate of 1.3+-0.7 events. While our search strategy does not rely on model-specific dynamics, we set cross section limits in a supersymmetric model with \tildeχ_1^0->γ\gravitino and place the world-best 95% C.L. lower limit on the \tildeχ_1^0 mass of 101 GeV/c^2 at τ_{\tildeχ_1^0} = 5 ns.
description: 7 pages, 3 figures, to be submitted to Phys. Rev. Lett
Failure of the work-Hamiltonian connection for free energy calculations
Creators: name: Vilar, Jose M. G.
name: Rubi, J. Miguel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Extensions of statistical mechanics are routinely being used to infer free energies from the work performed over single-molecule nonequilibrium trajectories. A key element of this approach is the ubiquitous expression dW/dt=\partial H(x,t)/ \partial t which connects the microscopic work W performed by a time-dependent force on the coordinate x with the corresponding Hamiltonian H(x,t) at time t. Here we show that this connection, as pivotal as it is, cannot be used to estimate free energy changes. We discuss the implications of this result for single-molecule experiments and atomistic molecular simulations and point out possible avenues to overcome these limitations.
Isometry theorem for the Segal-Bargmann transform on noncompact symmetric spaces of the complex type
Creators: name: Hall, Brian C.
name: Mitchell, Jeffrey J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: Representation Theory (math.RT)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 81S30

description: We consider the Segal-Bargmann transform for a noncompact symmetric space of the complex type. We establish isometry and surjectivity theorems for the transform, in a form as parallel as possible to the results in the compact case. The isometry theorem involves integration over a tube of radius R in the complexification, followed by analytic continuation with respect to R. A cancellation of singularities allows the relevant integral to have a nonsingular extension to large R, even though the function being integrated has singularities.
description: Final version. To appear in Journal of Functional Analysis. Minor revisions
Disclosure dos Ativos Intangíveis nas Demonstrações Contábeis: Uma análise do segmento utilidade pública da B3
Creators: name: Giacomin, Juciléia
name: Tasso, Andressa
name: Tartas, Neide Maria
Publisher: name: Revista de Informação Contábil
Year: 2020
Subjects: Ativo Intangível. Segmento Utilidade Pública. B3 (Brasil, Bolsa, Balcão).

description: O objetivo do presente estudo consiste em identificar evidenciação de informações compulsórias sobre Ativos Intangíveis de empresas listadas no setor de utilidade púbica da B3 referente ao exercício de 2015 e 2016, observando os critérios de reconhecimento, mensuração e registro destes ativos conforme especificações do CPC 04. A pesquisa caracteriza-se quanto a abordagem do problema como qualitativa, quanto aos objetivos descritiva e quanto aos procedimentos como documental. Verificou-se os Balanços Patrimoniais e Notas Explicativas nos anos de 2015 e 2016 das sessenta e oito (68) empresas listadas no site da B3 no setor de Utilidade Pública. Constatou-se que nenhum dos itens relacionados ao Ativo Intangível foi divulgado em sua totalidade pelas empresas analisadas. Ademais, as empresas dos segmentos de água e saneamento são as que mais divulgaram informações sobre os Ativos Intangíveis, apenas não divulgando o item vida útil. As empresas do segmento de energia apresentaram menor índice de evidenciação.
description: Revista de Informação Contábil, v. 12, n. 4 (2018)
Estimação de Custos e Desafios Logísticos na Importação da Empresa Minha Casa Solar
Creators: name: Lopes, Rafael Sabatini
name: Oliveira, Wanderley Afonso De
name: Costa, Naiane Dias
name: Oliveira, Josmária Lima Ribeiro De
Publisher: name: Revista de Informação Contábil
Year: 2020
Subjects: Importação, Estimação de Custos, Energia Solar Fotovoltaica, Desafios Logísticos

description: Este artigo apresenta os resultados de uma pesquisa baseada em um estudo de caso desenvolvido na Minha Casa Solar, que vende e instala painéis solares fotovoltaicos, e está localizada em Belo Horizonte, Minas Gerais. O objetivo da pesquisa consistiu em descrever o processo de importação realizado para identificar os custos e os desafios logísticos que integram o processo de compra de produtos importados e descrever o sistema de estimação de custos utilizado. O volume nacional de importação é representativo, porém não tem sido abordado profundamente no Brasil, pois dá-se preferência aos constantes incentivos à exportação. A abordagem sobre a estimação de custos da importação e seus desafios logísticos beneficia o adquirente da mercadoria, pois este passa a ter maior clareza, na solicitação de compra do produto. A coleta de dados foi realizada por meio de entrevistas não-estruturadas, questionários semi-estruturados e análise documental dos formulários e planilhas utilizados nas atividades de estimação de custos. Os resultados apresenta =m a descrição do processo de importação, além de identificar os custos e desafios logísticos, como também o sistema de estimação de custos utilizado. A publicação contribuir para a compreensão da atividade de importação e estimação de custos da mesma, e revela a complexidade da ação de compra no mercado internacional para as empresas brasileiras.
description: Revista de Informação Contábil, v. 13, n. 1 (2019)
TECNOLOGIA DA INFORMAÇÃO E CONTABILIDADE PÚBLICA: UMA ANÁLISE BIBLIOMÉTRICA
Creators: name: Liparini, Sabrina Alessandra
name: Baldissera, Juliano Francisco
Publisher: name: Revista de Informação Contábil
Year: 2020
Subjects: Tecnologia da Informação, Contabilidade Pública, Bibliometria, TI.

description: Este artigo é resultado de uma pesquisa cujo objetivo foi descrever as características da produção científica sobre a Tecnologia da Informação e a Contabilidade Pública, por meio de uma análise bibliométrica. No aspecto metodológico a pesquisa é caracterizada como descritiva, de caráter quantitativo, utilizando de instrumentos estatísticos após a coleta de dados para demonstração dos resultados. A análise das pesquisas foi realizada nas bases da Spell, Scielo e Biblioteca Digital Brasileira de Teses e Dissertações (BDTD), não se limitando a um período específico. Os estudos sobre o tema debatido apresentam uma pequena quantidade de publicações dado a sua importância para sociedade. Os principais pontos de discussões observados estão relacionados à Tecnologia da Informação, Governo Eletrônico, Tecnologias da Informação e Comunicação, Governança de TI e Setor Público. O presente artigo, além disso, confirmou as duas leis da análise bibliométrica, a Lei de Bradford e a Lei de Zipf.
description: Revista de Informação Contábil, v. 13, n. 1 (2019)
Índice de sustentabilidade empresarial (ISE): Evidenciação das ações ambientais das empresas listadas na carteira anual no período de 2015 e 2016
Creators: name: GIACOMIN, JUCILÉIA
name: OSTRZYZEK, TAMIRES
name: VENDRAME, GABRIELI FANTIN
Publisher: name: Revista de Informação Contábil
Year: 2020
Subjects: Índice de sustentabilidade empresarial; Responsabilidade Empresarial, meio ambiente.

description: Esta pesquisa teve como objetivo analisar quais as ações ambientais que as empresas que integram o ISE desenvolveram nos anos de 2015 e 2016. Trata-se de uma pesquisa descritiva; quanto aos procedimentos trata-se de uma pesquisa documental; e quanto a abordagem do problema, como qualitativa. Para a análise dos relatórios de sustentabilidade e de administração, utilizou-se palavras-chaves, foi considerada a adaptação realizada por Coelho (2010) composta por oito (8) categorias ambientais, que incluí os seguintes sub itens: Investimentos ambientais, Custos/Despesas ambientais, Passivos/Provisões ambientais, Práticas Contábeis de itens ambientais, Seguros ambientais, Ativos ambientais tangíveis e intangíveis. Composta por uma amostra de trinta e duas (32) empresas, foram verificados seus Relatórios de Sustentabilidade e na falta dos mesmos analisados os Relatórios de Administração. Os principais resultados obtidos na pesquisa mostram que o item mais evidenciado pelas empresas foi o de Investimentos Ambientais. O setor com maior evidenciação desta categoria foi o alimentício no ano de 2015 e o ramo de produtos e derivados de madeira em 2016.
description: Revista de Informação Contábil, v. 13, n. 1 (2019)
SISTEMAS DE INFORMAÇÕES GERENCIAIS NA CONTROLADORIA GERAL DO MUNICÍPIO (CGM): UM ESTUDO DE CASO EM UMA PREFEITURA MUNICIPAL
Creators: name: Cavalcante Junior, Florisvaldo Cunha
name: Ceolin, Alessandra Carla
name: Inocêncio Junior, João
Publisher: name: Revista de Informação Contábil
Year: 2020
Subjects: Sistemas de Informação; Tecnologia da Informação; Controladoria; Prefeitura; Percepção; Eficiência.

description: O estudo apresenta a relevância dos Sistemas de Informação Gerenciais (SIGs) quando do exercício da Controladoria, como ferramenta de Tecnologia da Informação (TI), e em como a implantação dos SIGs pode colaborar na redução de custos públicos, eliminar falhas de controle interno e transparência para usuários internos e externos. Diante disto, buscou-se a análise contribuição dos SIGs na atuação da Controladoria Geral do Município (CGM) de uma edilidade do Estado de Pernambuco. Foi realizada a análise em três variáveis: a) perfil do setor/organização; b) características dos servidores da Controladoria; e, c) percepção e visão sobre o sistema de informação como apoio à Controladoria. Depreende-se que os sistemas necessitam de ajustes para alinharem-se melhor com as atividades da controladoria a fim de atingirem a excelência. Ademais os SIGs contribuem satisfatoriamente nas diversas atividades da CGM.
description: Revista de Informação Contábil, v. 13, n. 1 (2019)
FORMAÇÃO DE PREÇO DE VENDA: UM ESTUDO EM EMPRESAS DE VAREJO DO MUNICÍPIO DE JOÃO PESSOA/PB
Creators: name: Nicolau, Antônio Moreira
name: Lima, Adilson Celestino De
Publisher: name: Revista de Informação Contábil
Year: 2020

description: O processo de formação de preço de venda revela-se como muito importante e essencial para as empresas do comércio varejista, pois influencia diretamente em seus resultados. A presente pesquisa parte do pressuposto de que a compreensão e utilização correta dos métodos de formação do preço de venda dos produtos podem auxiliar na obtenção de melhores resultados. Neste sentido, torna-se fundamental que os gestores possuam conhecimento sobre os métodos de formação de preço condizente com o mercado de atuação e, principalmente, com os objetivos organizacionais. Logo, o objetivo deste estudo busca medir o nível de conhecimento dos gestores das empresas do comércio varejista da cidade de João pessoa/PB sobre os métodos de formação de preço de venda. A pesquisa classifica-se como exploratória e descritiva. Para a coleta de dados foi utilizado o questionário do tipo Likert com escala de cinco pontos. A análise dos dados foi feita através da estatística descritiva e inferencial. Os resultados encontrados evidenciaram a falta de conhecimento e a deficiência, por parte dos gestores, sobre os métodos de formação de preço de venda, porém quanto maior o grau de escolaridade do gestor, maior será o nível de conhecimento sobre os métodos de precificação.
description: Revista de Informação Contábil, v. 13, n. 1 (2019)
Modeling Languages for Automotive Digital Twins : A Survey Among the German Automotive Industry
Creators: name: Pfeiffer, Jérôme
name: Fuchß, Dominik
name: Kühn, Thomas
name: Liebhart, Robin
name: Neumann, Dirk
name: Neimöck, Christer
name: Seiler, Christian
name: Koziolek, Anne
name: Wortmann, Andreas
Publisher: name: Association for Computing Machinery (ACM)
Year: 2024

description: The demand for digital twins and suitable modeling techniques in the automotive industry is increasing rapidly. Yet, there is no common understanding of digital twins in automotive, nor are there modeling techniques established to create automotive digital twins. Recent studies on digital twins focus on the analysis of the literature on digital twins for automotive or in general and, thus, neglect the industrial perspective of automotive practitioners. To mitigate this gap between scientific literature and the industrial perspective, we conducted a questionnaire survey among experts in the German automotive industry to identify i) the desired purposes for and capabilities of digital twins and ii) the modeling techniques related to engineering and operating digital twins across the phases of automotive development. To this end, we contacted 189 members of the Software-Defined Car research project and received 96 responses. The results show that digital twins are considered most useful in the usage and support phase of automotive development, representing vehicles as-operated. Moreover, simulation models, source code, and business process models are currently considered the most important models to be integrated into a digital twin alongside the associated, established tools.
Remarks on Liouville type theorems for the steady MHD and Hall-MHD equations
Creators: name: Chen, Xiaomeng
name: Li, Shuai
name: Wang, Wendong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: In this note we investigate Liouville type theorems for the steady three dimensional MHD and Hall-MHD equations, and show that the velocity field $u$ and the magnetic field $B$ are vanishing provided that $B\in L^{6,\infty}(\mathbb{R}^3)$ and $u\in BMO^{-1}(\mathbb{R}^3)$, which state that the velocity field plays an important role. Moreover, the similar result holds in the case of partial viscosity or diffusivity for the three dimensional MHD equations.
Walnut trees ("Juglans regia") in agroforestry systems - Nogueiras (Juglans regia) em sistemas agroflorestais
Creators: name: WILLEM VAN COLEN
Publisher: name: Zenodo
Year: 2019
Subjects: silvoarable; silvopastoral; productivity; biodiversity; tree management; varieties
silvoarável; silvopastoril; produtividade; biodiversidade; gestão das árvores; variedades

description: Tradução da factsheet do projeto AFINET - A nogueira (Juglans regia) é largamente cultivada por toda a Europa. É uma árvore com grande potencial comercial. A sua noz nutritiva e a madeira de alta qualidade são muito valorizadas, e com procura elevada. O sul da Europa e os países mediterrâneos da UE são líderes do mercado europeu, e mundialmente, lideram os EUA e a China. O cultivo comercial de nogueira ainda é raro em países como a Bélgica, onde quase toda a noz é importada. Esta situação representa uma boa oportunidade para a produção regional de noz. As nogueiras são árvores robustas muito adequadas a sistemas agroflorestais, visto que competem pouco com as outras culturas pela radiação solar, sobretudo pela sua copa larga, o abrolhamento tardio da folha, e queda da folha durante o período frio.
Möglichkeiten einer arbeitnehmer-orientierten Strukturpolitik: Das Beispiel Bochum
Creators: name: Helm, Jutta A.
Publisher: name: Moving the Social
Year: 2014

description: This is the contribution "Möglichkeiten einer arbeitnehmer-orientierten Strukturpolitik: Das Beispiel Bochum" of MTS 15 (1994).
description: Moving the Social, Vol 15 (1994): Strukturpolitik und Arbeitnehmererfahrungen in altindustriellen Krisenregionen: Ruhrgebiet, Pittsburgh und Asturien
Das Ruhrgebiet im Umbruch: Die Perspektive des Instituts Arbeit und Technik
Creators: name: Kilper, Heiderose
Publisher: name: Moving the Social
Year: 2014

description: This is the contribution "Das Ruhrgebiet im Umbruch: Die Perspektive des Instituts Arbeit und Technik" of MTS 15 (1994).
description: Moving the Social, Vol 15 (1994): Strukturpolitik und Arbeitnehmererfahrungen in altindustriellen Krisenregionen: Ruhrgebiet, Pittsburgh und Asturien
Asturien: Barrikaden vor ausgehenden Lichtern
Creators: name: Köhler, Holm-Detlev
Publisher: name: Moving the Social
Year: 2014

description: This is the contribution "Asturien: Barrikaden vor ausgehenden Lichtern" of MTS 15 (1994).
description: Moving the Social, Vol 15 (1994): Strukturpolitik und Arbeitnehmererfahrungen in altindustriellen Krisenregionen: Ruhrgebiet, Pittsburgh und Asturien
Wirtschaft, Politik und Unternehmerbiographie : Gerald D. Feldman, Hugo Srinnes. Biographie eines Industriellen 1870-19241
Creators: name: Przigoda, Stefan
Publisher: name: Moving the Social
Year: 2014

description: This is the contribution "Wirtschaft, Politik und Unternehmerbiographie: Gerald D. Feldman, Hugo Srinnes. Biographie eines Industriellen 1870-19241" of MTS 22 (1999).
description: Moving the Social, Vol 22 (1999): Forschungen und Forschungsberichte
Kurzer Bericht über die Tätigkeit des Instituts für soziale Bewegungen 2001/2002
Creators: name: Friedemann, Peter
Publisher: name: Moving the Social
Year: 2015

description: This is the contribution "Kurzer Bericht über die Tätigkeit des Instituts für soziale Bewegungen 2001/2002" of MTS 28 (2003).
description: Moving the Social, Vol 28 (2003): Forschungen und Forschungsberichte
Dependence of the Critical Adsorption Point on Surface and Sequence Disorders for Self-Avoiding Walks Interacting with a Planar Surface
Creators: name: Ziebarth, Jesse D.
name: Wang, Yongmei
name: Polotsky, Alexey
name: Luo, Mengbo
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The critical adsorption point (CAP) of self-avoiding walks (SAW) interacting with a planar surface with surface disorder or sequence disorder has been studied. We present theoretical equations, based on ones previously developed by Soteros and Whittington (J. Phys. A.: Math. Gen. 2004, 37, R279-R325), that describe the dependence of CAP on the disorders along with Monte Carlo simulation data that are in agreement with the equations. We also show simulation results that deviate from the equations when the approximations used in the theory break down. Such knowledge is the first step toward understanding the correlation of surface disorder and sequence disorder during polymer adsorption.
description: 29 pages, 8 figures
Theory and Numerics of Gravitational Waves from Preheating after Inflation
Creators: name: Dufaux, Jean Francois
name: Bergman, Amanda
name: Felder, Gary N.
name: Kofman, Lev
name: Uzan, Jean-Philippe
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Preheating after inflation involves large, time-dependent field inhomogeneities, which act as a classical source of gravitational radiation. The resulting spectrum might be probed by direct detection experiments if inflation occurs at a low enough energy scale. In this paper, we develop a theory and algorithm to calculate, analytically and numerically, the spectrum of energy density in gravitational waves produced from an inhomogeneous background of stochastic scalar fields in an expanding universe. We derive some generic analytical results for the emission of gravity waves by stochastic media of random fields, which can test the validity/accuracy of numerical calculations. We contrast our method with other numerical methods in the literature, and then we apply it to preheating after chaotic inflation. In this case, we are able to check analytically our numerical results, which differ significantly from previous works. We discuss how the gravity wave spectrum builds up with time and find that the amplitude and the frequency of its peak depend in a relatively simple way on the characteristic spatial scale amplified during preheating. We then estimate the peak frequency and amplitude of the spectrum produced in two models of preheating after hybrid inflation, which for some parameters may be relevant for gravity wave interferometric experiments.
description: 28 pages, 10 figures, refs added, published version
Strategien sozialen Verhaltens in der slowenischen historischen Erzählkunst
Creators: name: Hladnik, Miran
Publisher: name: Moving the Social
Year: 2015

description: Several strategies for the national body’s behaviour in historical situations can be found in the Slovene historical novel since its beginnings in the 19th century: among others, these are the elimination of an enemy, the belief that there is no such thing as an enemy, and finally the recognition of a superior alien, as well as the acceptance and adoption of his values. Due to the fact that the Slovenes as a “non-historical nation” did not possess a military of their own, the first option has rarely been advised to literary heroes. On the contrary, the pretention that an alternative (hence hostile) culture does not exist at all is symptomatic for popular fiction, while the major works of the national canon propose the most risky attitude towards the dominant Other: its adjustment to the specific needs of one’s own. The option of accepting a foreign force and subordinating to it remained beyond the scope of Slovene literature, and so did a potential assimilation of the Other. The paper discusses the variety of metaphors in dealing with the national historical destiny, and includes France Prešeren’s Krst pri Savici (1836), Jožef Žemlja’s Sedem sinov (1843), Fran Levstik’s Martin Krpan, Ferdo Kočevar’s Mlinarjev Janez (both 1859), Josip Jurič’s Jurij Kozjak (1864), Ivan Tavčar’s Visoška kronika (1919), and Vladimir Bartol’s Alamut (1938).
description: Moving the Social, Vol 41 (2009): Sozialgeschichte und soziale Bewegungen in Slowenien / Social History and Social Movements in Slovenia
2019-07-01 Berman-Topper Year-end Progress Report
Creators: name: Maiuri, Tamara
Publisher: name: Zenodo
Year: 2019
Subjects: Huntington's disease
huntingtin
ROS
reactive oxygen species
DNA repair
poly ADP ribose
PARP
HDSA
Berman Topper

description: Year-end report for the HDSA Berman-Topper fellowship funding the ROS-specific huntingtin interactor project. End of Year 2: 2019-07-01.
description: This work is funded by the HDSA Berman/Topper HD Career Development Fellowship.
Coherent control of atomic tunneling
Creators: name: Martin, John
name: Braun, Daniel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the tunneling of a two-level atom in a double well potential while the atom is coupled to a single electromagnetic field mode of a cavity. The coupling between internal and external degrees of freedom, due to the mechanical effect on the atom from photon emission into the cavity mode, can dramatically change the tunneling behavior. We predict that in general the tunneling process becomes quasiperiodic. In a certain regime of parameters a collapse and revival of the tunneling occurs. Accessing the internal degrees of freedom of the atom with a laser allows to coherently manipulate the atom position, and in particular to prepare the atom in one of the two wells. The effects described should be observable with atoms in an optical double well trap.
description: 6 pages revtex, 4 figures, extended version including numerical results taking into account higher vibrationnal levels
PERFIL PROFISSIONAL: UM ESTUDO COMPARATIVO ENTRE OS EGRESSOS DO CURSO DE CIÊNCIAS CONTÁBEIS DA UNICENTRO SOB A PERSPECTIVA DE GÊNERO
Creators: name: Machado Ribas, Fernanda
name: Raifur Kos, Sonia
Publisher: name: Revista de Informação Contábil
Year: 2020
Subjects: Perfil profissional, Egresso da Unicentro, Ciências Contábeis, Gênero.

description: Essa pesquisa busca identificar o perfil profissional dos egressos do gênero masculino do curso de Ciência Contábeis da Unicentro entre os anos de 2013 a 2017 e comparar os dados obtidos com pesquisa anterior realizada com as egressas da Unicentro. Foram pesquisados 42 egressos do gênero masculino e o resultado comparado com 63 egressos de gênero feminino, ambos formados entre os anos de 2013 a 2017. Os resultados mostram que quando realizado o comparativo percebe-se muitas semelhanças com relação a idade, estado civil, filhos e funções desempenhadas. No entanto, quando é apresentada as questões de renda as semelhanças não se mantem. Mulheres que trabalham na área contábil e ganham acima de R$3.000,00 representam apenas 22% e trabalhando fora da área contábil 24%. Já com os homens, dos que atuam na área contábil, 48% ganham acima de R$ 3.000,00 e dos que não trabalham, 50% tem renda superior a R 3.000,00. Notou-se também que a maioria das mulheres percebem a discriminação explícita ou implícita nas relações de trabalho, enquanto a maior parte dos homens não a observa.
description: Revista de Informação Contábil, v. 13, n. 2 (2019)
Soziale Bewegungen in Lateinamerika im 20. Jahrhundert Akteure und Protestformen im Wandel
Creators: name: Ismar, Georg
name: Mittag, Jürgen
Publisher: name: Moving the Social
Year: 2014

description: This is the contribution "Soziale Bewegungen in Lateinamerika im 20. Jahrhundert Akteure und Protestformen im Wandel" of MTS 44 (2010).
description: Moving the Social, Vol 44 (2010): Forschungen und Forschungsberichte
Biografien der Arbeiterbewegung: Das 20. Jahrhundert - Tagung zu Ehren von Helga Grebing
Creators: name: Kruppa, Nadine
Publisher: name: Moving the Social
Year: 2013

description: This is the contribution "Biografien der Arbeiterbewegung: Das 20. Jahrhundert - Tagung zu Ehren von Helga Grebing" of MTS 44 (2010).
description: Moving the Social, Vol 44 (2010): Forschungen und Forschungsberichte
Magnetic Switching by Oxygen Adsorption in Metal-Organic Framework Systems
Creators: name: Kato, Masaki
name: Tokushuku, Kunio
name: Matsuura, Hiroyasu
name: Udagawa, Masafumi
name: Ogata, Masao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this letter, we address magnetization switching by oxygen adsorption in porous metal-organic framework systems. To this end, we construct a simple localized spin model combined with a Langmuir-type formula for oxygen adsorption and study its finite-temperature properties using Monte Carlo simulation. We successfully explain the main features of this phenomenon, such as the discontinuous changes in magnetic states, sensitivity of the magnetic transition temperatures to oxygen pressure, and absence of singularities in adsorbed oxygen. Based on this model, we also reproduce the observed magnetic transition temperatures for a typical value of oxygen adsorption energy.
description: 5 pages, 2 figures
A PRESENÇA DO ISOMORFISMO NO ÍNDICE DE DESEMPENHO DAS OPERADORAS DE PLANOS DE SAÚDE DO ESTADO DE PERNAMBUCO: sob os aspecto das informações contábeis
Creators: name: Neto, Herrisson Queiroz
name: Oliveira, Rezilda Rodrigues
Publisher: name: Revista de Informação Contábil
Year: 2020

description: Esta pesquisa apresenta uma abordagem pela Teoria do Isomorfismo para os estudos organizacionais, bem como, sua contribuição sobre as estruturas e processos, que viabilizam as tomada de decisões nas instituições. Neste contexto, o objetivo deste artigo foi demonstrar a presença do isomorfismo no índice de desempenho das operadoras de planos de saúde do Estado de Pernambuco, sob os aspectos das informações contábeis. Para a realização dessa pesquisa utilizou-se dois dos índices que envolvem dados contábeis e que possuem um grau de relevância bem substancial, tendo como o universo desse estudo dez operadoras de planos de saúde, compreendidas no Estado de Pernambuco. Ainda, foram feitas comparações com as operadoras de saúde do Brasil, que tiveram seus dados encaminhados e analisados pelo órgão regulador, no ano de 2015. Os resultados obtidos fundamentam uma suposição do isomorfismo coercitivo no índice, sob os aspectos contábeis que influenciam a tomada de decisão, nas operadoras de saúde. Caraterizado pela obtenção de um melhor desempenho/desenvolvimento, relacionado ao índice, que alguns tipos de operadoras obtiveram, em relação às demais. Conclui-se que o isomorfismo contribuiu na constituição do índice de desenvolvimento da saúde suplementar, tornando-se a partir de então uma ferramenta indispensável para obtenção das analises e geração de informações, embasando as tomadas de decisões na área da saúde suplementar do Brasil.
description: Revista de Informação Contábil, v. 13, n. 2 (2019)
Geschichte des deutschen Bergbaus - Bericht über den zweiten Autorenworkshop zum bergbaugeschichtlichen Handbuch, 18. bis 20. Februar 2010, Bochum
Creators: name: Oerters, Kathrin
Publisher: name: Moving the Social
Year: 2014

description: This is the contribution "Geschichte des deutschen Bergbaus - Bericht über den zweiten Autorenworkshop zum bergbaugeschichtlichen Handbuch, 18. bis 20. Februar 2010, Bochum" of MTS 44 (2010).
description: Moving the Social, Vol 44 (2010): Forschungen und Forschungsberichte
Pursuing the origin of the gamma rays in RX J1713.7$-$3946 quantifying the hadronic and leptonic components
Creators: name: Fukui, Yasuo
name: Sano, Hidetoshi
name: Yamane, Yumiko
name: Hayakawa, Takahiro
name: Inoue, Tsuyoshi
name: Tachihara, Kengo
name: Rowell, Gavin
name: Einecke, Sabrina
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We analyzed the TeV gamma-ray image of a supernova remnant RX J1713.7$-$3946 (RX J1713) through a comparison with the interstellar medium (ISM) and the non-thermal X-rays. The gamma-ray datasets at two energy bands of $>$2 TeV and $>$250-300 GeV were obtained with H.E.S.S. (H.E.S.S. Collaboration 2018; Aharonian et al. 2007) and utilized in the analysis. We employed a new methodology which assumes that the gamma-ray counts are expressed by a linear combination of two terms; one is proportional to the ISM column density and the other proportional to the X-ray count. We then assume these represent the hadronic and leptonic components, respectively. By fitting the expression to the data pixels, we find that the gamma-ray counts are well represented by a flat plane in a 3D space of the gamma-ray counts, the ISM column density and the X-ray counts. The results using the latest H.E.S.S. data at 4.8 arcmin resolution show that the hadronic and leptonic components occupy $(67\pm8)$% and $(33\pm8)$% of the total gamma rays, respectively, where the two components have been quantified for the first time. The hadronic component is greater than the leptonic component, which reflects the massive ISM of $\sim$10$^4$ $M_{\odot}$ associated with the SNR, lending support for the acceleration of the cosmic-ray protons. There is a marginal hint that the gamma rays are suppressed at high gamma-ray counts which may be ascribed to the second order effects including the shock-cloud interaction and the penetration-depth effect.
description: 20 pages, 9 figures, 3 tables, accepted for publication in The Astrophysical Journal (ApJ)
Dataset of Government Infrastructure Projects on Kalimantan, Sulawesi, and Gorontalo (2023/2024) with Sudoku Backtracking-Python Code
Creators: name: Leonard, Audrey Elvia
name: Verenita, Fristania
name: Atmojo, Robertus Nugroho Perwiro
Publisher: name: Zenodo
Year: 2024
Subjects: Sustainable Development Goals
Sustainable Infrastructure
Project Prioritization
Sudoku Algorithm
Backtracking

description: This dataset is designed to facilitate the distribution of infrastructure projects between the central and regional governments in Kalimantan, Sulawesi, and Gorontalo (2023/2024). Each region is represented as a grid in a Sudoku-like structure, where specific development themes are assigned to each province. The numbers 1 to 9 correspond to different project categories, aligning with both central and regional government initiatives focused on sustainable development. The dataset includes projects already implemented by the government as well as recommended projects based on proposed criteria.

Additionally, the dataset is supported by a Python code implementing a backtracking algorithm to solve a 9x9 Sudoku puzzle. The algorithm explores each cell recursively, placing numbers in accordance with Sudoku rules and backtracking when necessary to ensure an optimal solution. This version enhances Harshit Sidhwa’s original code by incorporating set-based validation, reducing iteration time, and improving the backtracking function for faster, more efficient number placement and removal.

Key features of the code include Grid Printing, Number Safety Check, Backtracking, and Driver Code. This implementation showcases the practical application of backtracking in constraint satisfaction problems (CSPs) and serves as an efficient example of puzzle-solving techniques in Python.
Quasi-Local Linear Momentum in Black-Hole Binaries
Creators: name: Krishnan, Badri
name: Lousto, Carlos O.
name: Zlochower, Yosef
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We propose a quasi-local formula for the linear momentum of black-hole horizons inspired by the formalism of quasi-local horizons. We test this formula using two complementary configurations: (i) by calculating the large orbital linear momentum of the two black holes in an unequal-mass, zero-spin, quasi-circular binary and (ii) by calculating the very small recoil momentum imparted to the remnant of the head-on collision of an equal-mass, anti-aligned-spin binary. We obtain results consistent with the horizon trajectory in the orbiting case, and consistent with the net radiated linear momentum for the much smaller head-on recoil velocity.
description: 5 pages, 3 figures, revtex4
Correlation functions and excitation spectrum of the frustrated ferromagnetic spin-1/2 chain in an external magnetic field
Creators: name: Vekua, T.
name: Honecker, A.
name: Mikeska, H. -J.
name: Heidrich-Meisner, F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Magnetic field effects on the one-dimensional frustrated ferromagnetic chain are studied by means of effective field theory approaches in combination with numerical calculations utilizing Lanczos diagonalization and the density matrix renormalization group method. The nature of the ground state is shown to change from a spin-density-wave region to a nematic-like one upon approaching the saturation magnetization. The excitation spectrum is analyzed and the behavior of the single spin-flip excitation gap is studied in detail, including the emergent finite-size corrections.
description: 6 pages