83 results on '"Faleiro E"'
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2. O princípio da publicidade e os desafios aos direitos do réu no processo civil na contextura do contraterrorismo: um paralelo entre a situação brasileira e a do Reino Unido.
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Faleiro e Silva, Letícia Mirelli and Mucelli Rezende Veloso, Natielli Efigênia
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- 2023
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3. Spectral statistics in noninteracting many-particle systems
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Relaño Pérez, Armando, Muñoz, L., Faleiro, E., Molina, R. A., Retamosa Granado, Joaquín, Relaño Pérez, Armando, Muñoz, L., Faleiro, E., Molina, R. A., and Retamosa Granado, Joaquín
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© 2006 The American Physical Society. We are particularly indebted to P. A. Mello for enlightening discussions. We also thank K. Wood for his help with this manuscript. This work is supported in part by Spanish Government Grants No. BFM2003-04147 and No. FTN2003-08337-C04-04., It is widely accepted that the statistical properties of energy level spectra provide an essential characterization of quantum chaos. Indeed, the spectral fluctuations of many different systems like quantum billiards, atoms, or atomic nuclei have been studied. However, noninteracting many-body systems have received little attention, since it is assumed that they must exhibit Poisson-like fluctuations. Apart from a heuristic argument of Bloch, there are neither systematic numerical calculations nor a rigorous derivation of this fact. Here we present a rigorous study of the spectral fluctuations of noninteracting identical particles moving freely in a mean field emphasizing the evolution with the number of particles N as well as with the energy. Our results are conclusive. For N >= 2 the spectra of these systems exhibit Poisson fluctuations provided that we consider sufficiently high excitation energies. Nevertheless, when the mean field is chaotic there exists a critical energy scale L-c; beyond this scale, the fluctuations deviate from the Poisson statistics as a reminiscence of the statistical properties of the mean field., Spanish Government, Depto. de Estructura de la Materia, Física Térmica y Electrónica, Fac. de Ciencias Físicas, TRUE, pub
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- 2023
4. 1/f noise and very high spectral rigidity
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Relaño Pérez, Armando, Retamosa Granado, Joaquín, Faleiro, E., Molina, R. A., Zuker, A. P., Relaño Pérez, Armando, Retamosa Granado, Joaquín, Faleiro, E., Molina, R. A., and Zuker, A. P.
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©2006 The American Physical Society. This work is supported in part by Spanish Government Grants No. BFM2003-04147 and No. FTN2003-08337-C04-04., It was recently pointed out that the spectral fluctuations of quantum systems are formally analogous to discrete time series, and therefore their structure can be characterized by the power spectrum of the signal. Moreover, it is found that the power spectrum of chaotic spectra displays a 1/f behavior, while that of regular systems follows a 1/f(2) law. This analogy provides a link between the concepts of spectral rigidity and antipersistence. Trying to get a deeper understanding of this relationship, we have studied the correlation structure of spectra with high spectral rigidity. Using an appropriate family of random Hamiltonians, we increase the spectral rigidity up to hindering completely the spectral fluctuations. Analyzing the long range correlation structure a neat power law 1/f has been found for all the spectra, along the whole process. Therefore, 1/f noise is the characteristic fingerprint of a transition that, preserving the scale-free correlation structure, hinders completely the fluctuations of the spectrum., Spanish Government, Depto. de Estructura de la Materia, Física Térmica y Electrónica, Fac. de Ciencias Físicas, TRUE, pub
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- 2023
5. Principal components analysis of extensive air showers applied to the identification of cosmic TeV gamma-rays
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Faleiro, E., Gómez Gómez, José María, Muñoz, L., Relaño Pérez, Armando, Retamosa Granado, Joaquín, Faleiro, E., Gómez Gómez, José María, Muñoz, L., Relaño Pérez, Armando, and Retamosa Granado, Joaquín
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© 2004. The American Astronomical Society. All rights reserved. This work is supported in part by Spanish Government grants for the research projects BFM2003-04147-C02 and FTN2003-08337-C04-04., We apply a principal components analysis (PCA) to the secondary particle density distributions at ground level produced by cosmic gamma-rays and protons. For this purpose, high-energy interactions of cosmic rays with Earth's atmosphere and the resulting extensive air showers have been simulated by means of the CORSIKA Monte Carlo code. We show that a PCA of the two-dimensional particle density fluctuations provides a decreasing sequence of covariance matrix eigenvalues that have typical features of a polynomial law, which are different for different primary cosmic rays. This property is applied to the separation of electromagnetic showers from proton simulated extensive air showers, and it is proposed as a new discrimination method that can be used experimentally for gamma-proton separation. A cutting parameter related to the polynomial behavior of the decreasing sequence of covariance matrix eigenvalues is calculated, and the efficiency of the cutting procedure for gamma-proton separation is evaluated., Spanish Government, Depto. de Estructura de la Materia, Física Térmica y Electrónica, Fac. de Ciencias Físicas, TRUE, pub
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- 2023
6. Quantum chaos and 1/f noise
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Relaño Pérez, Armando, Gómez Gómez, José María, Molina, R. A., Retamosa Granado, Joaquín, Faleiro, E., Relaño Pérez, Armando, Gómez Gómez, José María, Molina, R. A., Retamosa Granado, Joaquín, and Faleiro, E.
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©2002 The American Physical Society. This work is supported in part by Spanish Government Grants No. BFM2000-0600 and No. FTN2000-0963-C02., The main signature of chaos in a quantum system is provided by spectral statistical analysis of the nearest-neighbor spacing distribution P(s) and the spectral rigidity given by the Delta(3)(L) statistic. It is shown that some standard unfolding procedures, such as local unfolding and Gaussian broadening, lead to a spurious saturation of Delta(3)(L) that spoils the relationship of this statistic with the regular or chaotic motion of the system. This effect can also be misinterpreted as Berry's saturation., Spanish Government, Depto. de Estructura de la Materia, Física Térmica y Electrónica, Fac. de Ciencias Físicas, TRUE, pub
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- 2023
7. Recent results in quantum chaos and its applications to atomic nuclei
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Relaño Pérez, Armando, Gömez Gómez, José María, Faleiro, E., Muñoz, L., Molina, R. A., Retamosa Granado, J., Relaño Pérez, Armando, Gömez Gómez, José María, Faleiro, E., Muñoz, L., Molina, R. A., and Retamosa Granado, J.
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International Spring Seminar on Nuclear Physics: New Quests in Nuclear Structure (10th. 2010. Vietri sul Mare, Italy), A survey of chaotic dynamics in atomic nuclei is presented, using on the one hand standard statistics of quantum chaos studies, and on the other a new approach based on time series analysis methods. The study of shell-model spectra in the pf shell shows that nuclear chaos is strongly isopin dependent and increases with excitation energy. On the other hand, it is found that chaotic quantum systems exhibit 1/f noise and regular systems exhibit 1/f(2) behaviour. It is shown that the time series approach can be used to calculate quite accurately the fraction of missing levels and the existence of mixed symmetries in experimental level spectra., Depto. de Estructura de la Materia, Física Térmica y Electrónica, Fac. de Ciencias Físicas, TRUE, pub
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- 2023
8. Shell-Model studies of chaos and statistical properties in nuclei
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Gómez Gómez, José María, Faleiro, E., Muñoz, L., Molina, R. A., Relaño Pérez, Armando, Gómez Gómez, José María, Faleiro, E., Muñoz, L., Molina, R. A., and Relaño Pérez, Armando
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© 2015 IOP Publishing Ltd. International Spring seminar on nuclear physics: shell model and nuclear structure (11th. MAY 12-16, 2014. Ischia, Italia)., Shell-model calculations with realistic empirical interactions constitute an excellent tool to study statistical properties of nuclei. Using large-scale shell-model calculations in pf-shell nuclei, we study how the onset of chaos depends on different properties of the nuclear interaction and on excitation energy. We make use of classical random matrix theory and other theoretical developments based on information theory and time series analysis. We show that besides energy-level statistics, other statistical properties like the complexity of wave functions are fundamental for a proper determination of the dynamical regime of nuclei. Important deviations from GOE are observed in level fluctuations and in the complexity of wave functions., Depto. de Estructura de la Materia, Física Térmica y Electrónica, Fac. de Ciencias Físicas, TRUE, pub
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- 2023
9. Theoretical derivation of 1/ƒ noise in quantum chaos
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Relaño Pérez, Armando, Faleiro, E., Gómez Gómez, José María, Molina, R. A., Muñoz, L., Retamosa Granado, Joaquín, Relaño Pérez, Armando, Faleiro, E., Gómez Gómez, José María, Molina, R. A., Muñoz, L., and Retamosa Granado, Joaquín
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©2004 The American Physical Society. We are particularly indebted to P. Leboeuf, O. Bohigas, and M. Robnik for enlightening discussions. This work is supported in part by Spanish Government Grants No. BFM2003-04147-C02 and No. FTN2003-08337-C04-04., It was recently conjectured that 1/ƒ noise is a fundamental characteristic of spectral fluctuations in chaotic quantum systems. This conjecture is based on the power spectrum behavior of the excitation energy fluctuations, which is different for chaotic and integrable systems. Using random matrix theory, we derive theoretical expressions that explain without free parameters the universal behavior of the excitation energy fluctuations power spectrum. The theory gives excellent agreement with numerical calculations and reproduces to a good approximation the 1/ƒ (1/ƒ^(2)) power law characteristic of chaotic (integrable) systems. Moreover, the theoretical results are valid for semiclassical systems as well., Spanish Government, Depto. de Estructura de la Materia, Física Térmica y Electrónica, Fac. de Ciencias Físicas, TRUE, pub
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- 2023
10. Power-spectrum characterization of the continuous Gaussian ensemble
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Relaño Pérez, Armando, Muñoz, L., Retamosa Granado, Joaquín, Faleiro, E., Molina, R. A., Relaño Pérez, Armando, Muñoz, L., Retamosa Granado, Joaquín, Faleiro, E., and Molina, R. A.
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© 2008 The American Physical Society. This work was supported in part by Spanish Government Grants Nos. FIS2006-12783-C03-01 and FIS2006-12783-C03-02 and by Comunidad de Madrid–CSIC Grant No. 200650M012. A.R. was supported by the Spanish program “Juan de la Cierva”., The continuous Gaussian ensemble, also known as the nu-Gaussian or nu-Hermite ensemble, is a natural extension of the classical Gaussian ensembles of real (nu= 1), complex (nu= 2), or quaternion (nu=4) matrices, where nu is allowed to take any positive value. From a physical point of view, this ensemble may be useful to describe transitions between different symmetries or to describe the terrace-width distributions of vicinal surfaces. Moreover, its simple form allows one to speed up and increase the efficiency of numerical simulations dealing with large matrix dimensions. We analyze the long-range spectral correlations of this ensemble by means of the delta(n) statistic. We derive an analytical expression for the average power spectrum of this statistic, <(P(k)(delta))over bar>, based on approximated forms for the two-point cluster function and the spectral form factor. We find that the power spectrum of delta(n) evolves from <(P(k)(delta))over bar> proportional to 1/ k at nu= 1 to <(P(k)(delta))over bar> proportional to 1/ k(2) at nu= 0. Relevantly, the transition is not homogeneous with a 1/ f alpha noise at all scales, but heterogeneous with coexisting 1/ f and 1/ f(2) noises. There exists a critical frequency k(c)proportional to nu that separates both behaviors: below k(c), <(P(k)(delta))over bar> follows a 1/f power law, while beyond kc, it transits abruptly to a 1/ f(2) power law. For nu>1 the 1/ f noise dominates through the whole frequency range, unveiling that the 1/ f correlation structure remains constant as we increase the level repulsion and reduce to zero the amplitude of the spectral fluctuations. All these results are confirmed by stringent numerical calculations involving matrices with dimensions up to 10(5)., Spanish Government, Comunidad de Madrid, CSIC, Spanish program “Juan de la Cierva”, Depto. de Estructura de la Materia, Física Térmica y Electrónica, Fac. de Ciencias Físicas, TRUE, pub
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- 2023
11. Power spectrum of nuclear spectra with missing levels and mixed symmetries
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Relaño Pérez, Armando, Molina, R. A., Retamosa Granado, Joaquín, Muñoz, L., Faleiro, E., Relaño Pérez, Armando, Molina, R. A., Retamosa Granado, Joaquín, Muñoz, L., and Faleiro, E.
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© 2006 Elsevier B.V. All rights reserved. R.A.M. would like to thank E. Grosse, A.Wagner and G. Rusev of the Fz. Rossendorf for suggesting this work. A.R. is supported by the Spanish “Juan de la Cierva” program. This work is supported in part by Spanish Government grants BFM2003-04147-C02 and FTN2003-08337-C04-04., Sequences of energy levels in nuclei are often plagued with missing levels whose number and position are unknown. It is also quite usual that all the quantum numbers of certain levels cannot be experimentally determined, and thus levels of different symmetries are mixed in the same sequence. The analysis of these imperfect spectra (from the point of view of spectral statistics) is unavoidable if one wants to extract some statistical information. The power spectrum of the delta(q) statistic has emerged in recent years as an important tool for the study of quantum chaos and spectral statistics. We derive analytical expressions for the observed power spectrum in terms of the fraction of observed levels and the number of mixed sequences. These expressions are tested with large shell model spectra simulating realistic experimental situations. A good estimation of the number of mixed symmetries and the fraction of missing levels is obtained by means of a least-squares fit in a wide set of different situations., Spanish “Juan de la Cierva” program, Spanish Government, Depto. de Estructura de la Materia, Física Térmica y Electrónica, Fac. de Ciencias Físicas, TRUE, pub
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- 2023
12. DESPLAZAMIENTOS FORZADOS EN EL DESARROLLO DE DESASTRES AMBIENTALES: LA VIOLACIÓN DE LOS DERECHOS HUMANOS COMO REQUISITO PREVIO PARA EL RECONOCIMIENTO DEL REFUGIO AMBIENTAL EN BRASIL
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Letícia Mirelli Faleiro e Silva and Rubén Miranda Gonçalves
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refugio ambiental ,violación de los derechos humanos ,Displaced person ,Refugee ,Welfare economics ,media_common.quotation_subject ,Environmental disaster ,desastres ambientales ,Management, Monitoring, Policy and Law ,Dignity ,Legal protection ,Political science ,Law ,media_common - Abstract
El repentino cambio climático y los desastres ambientales, naturales o provocados por el hombre, han obligado a miles de personas en todo el mundo a abandonar sus países en busca de refugio y de una vida mínimamente digna en otro territorio. Este artículo busca abordar el problema del desplazamiento humano causado por estas catástrofes, investigando la protección legal requerida para estas personas desplazadas a la luz de un análisis del Estatuto de Refugiado desde la perspectiva del principio pro homine. Para ello, además de una explicación sobre el refugiado, como instituto jurídico de protección a nivel mundial, se analizarán los desastres ambientales para discutir, posteriormente, uno de los problemas que surgen, precisamente, por estos desastres, que no es otro que el desplazamiento masivo de personas, forzadas por la falta de condiciones para permanecer en la zona afectada con dignidad. El aspecto metodológico adoptado: jurídico-dogmática; tipo de razonamiento: deductivo; tipos metodológicos de investigación: histórico-jurídico, jurídico-interpretativo, jurídico-prospectivo y jurídico-positivo.
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- 2020
13. Individual and integrated methods on tough lovegrass control
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FALEIRO, E. A., LAMEGO, F. P., SCHAEDLER, C. E., VALLE, T. A. del, AZEVEDO, E. B. de, EDUARDO AVELINO FALEIRO, UNIPAMPA, FABIANE PINTO LAMEGO, CPPSUL, CARLOS EDUARDO SCHAEDLER, IFSUL, TIAGO ANTONIO DEL VALLE, UNIPAMPA, and EDUARDO BOHRER DE AZEVEDO, UNIPAMPA.
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Capim Annoni ,Eragrostis Plana ,Erva Daninha - Abstract
The current study evaluated the efficiency of mechanical, physical, chemical and cultural methods, used exclusively or integrated, to control tough lovegrass. The experimental design was completely randomized, with 15 treatments and four repetitions. Physical control of tough lovegrass was based on the application of fire, whereas mechanical controls consisted in mowing and harrowing/plowing procedures. The herbicide clethodim and different glyphosate salts were evaluated for chemical control. Glyphosate and soil fertility correction were applied as cultural and integrated methods, in addition to isopropylamine + potassium salts combination, soil fertility correction and implantation of one of the following forage plants: Elephant grass, Pangola grass, Forage peanut and Birdsfoot trefoil. The effect of treatments on the incidence of tough lovegrass and on its botanical composition was evaluated one year after their applications. Isolated control methods, except for glyphosate using, did not present efficient tough lovegrass control. Glyphosate salts could control tough lovegrass plants, but their association with improved soil fertility and Pangola grass implantation was the best strategy to control the invasive plant. Key words: Eragrostis plana Nees, native pasture, weed control. Made available in DSpace on 2022-04-06T14:06:37Z (GMT). No. of bitstreams: 1 Faleiro-et-al.-2022.pdf: 844538 bytes, checksum: d8957eadbd21248128e13b4444ea8c73 (MD5) Previous issue date: 2022
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- 2022
14. RESPONSABILIDAD INTERNACIONAL DEL ESTADO EN LA PROTECCIÓN DE LOS REFUGIADOS
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Letícia Mirelli Faleiro e Silva and Rubén Miranda Gonçalves
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Admisión de refugiados ,Acto ilícito internacional ,Responsabilidad civil y penal ,General Medicine ,Admission of Refugees ,International illicit act ,Civil and criminal liability - Abstract
This article intends to address the resistance of certain States to receive refugees, verifying whether they are parties to the 1951 Refugee Convention and its Protocol of 67, and if they comply with them. Delimiting the researched object, the President Donald J. Trump´s Executive Orders 13.769 and 13.780, of 2017, are examined, which suspend the US Refugee Admissions Program. In addition to these documents, the Declaration signed by the European Union and Turkey on 16 March 2016 to restrict the entry of refugees into European countries is also the subject of the study. Subsequently, the arguments raised during the issuance of these restrictive documents will be investigated, with the objective to investigate the alleged practice of an international illicit, susceptible to liability and reparation for any damages caused. The methodological aspects adopted: juridical-dogmatic; reasoning type: deductive; research methodological types: juridical-historical, juridical-interpretative, juridical-prospective and juridical-propositional. Este artículo tiene por objeto abordar la resistencia de algunos Estados a recibir refugiados verificando si son signatarios del Estatuto de los Refugiados de 1951 y de su Protocolo de 67, y si cumplen con él. Se analizarán los decretos ejecutivos 13.769 y 13.780, de 2017, del presidente Donald J. Trump, para definir el objeto del estudio, suspendiendo el Programa de Admisión de Refugiados en los Estados Unidos. Además de estos documentos, también se examinará la Declaración firmada por la Unión Europea y Turquía el 16 de marzo de 2016, para restringir la entrada de personas con estatuto de refugiado en los países europeos. El aspecto metodológico adoptado para la realización de este artículo ha sido el jurídico-dogmático; tipo de razonamiento: deductivo; tipos metodológicos de investigación: histórico-jurídico, jurídico-interpretativo, jurídico-prospectivo y jurídico-positivo. Pretende-se, no presente artigo, enfrentar a resistência de determinados Estados em receber refugiados, verificando se signatários do Estatuto dos Refugiados de 1951, bem como de seu Protocolo de 67, e se os cumprem. Delimitando o objeto pesquisado, examinam-se os decretos executivos13.769 e 13.780, de 2017, do presidenteDonald J. Trump, suspendendo o Programa de Admissão de Refugiados nos EUA. Além desses documentos, é também objeto do estudo a Declaração assinada pela União Europeia e Turquia, no dia 16 de março de 2016, para restringir a entrada de pessoas em condição de refúgio nos países europeus. Em sequência, serão averiguados os argumentos suscitados quando da edição desses documentos restritivos, objetivando perquirir a pretensa prática de ilícito internacional, suscetível de responsabilização e reparação de eventuais danos ocasionados.A vertente metodológica adotada: jurídico-dogmática; tipo de raciocínio: dedutivo; tipos metodológicos da pesquisa: histórico-jurídico, jurídico-interpretativo, jurídico-prospectivo e jurídico-propositivo.
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- 2019
15. Integrated management of tough lovegrass (Eragrostis plana Nees): associating chemical control tools and plant physiology
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FALEIRO, E. A., CHIAPINOTTO, D. M., LAMEGO, F. P., SCHAEDLER, C. E., AZEVEDO, E. B. de, Eduardo Avelino Faleiro, UNIPAMPA, Diego Martins Chiapinotto, UFPEL, FABIANE PINTO LAMEGO, CPPSUL, Carlos Eduardo Schaedler, IFSUL, and Eduardo Bohrer de Azevedo, UNIPAMPA.
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Capim Annoni ,Controle Químico ,Erva Daninha - Abstract
The objective of the study was to evaluate the efficiency of herbicides use in the control of tough lovegrass according to the availability of solar radiation and the presence or absence of flooded. Two experiments were conducted in a completely randomized design, in a 2x2x4 and 2x2x5 factorial scheme, where factor A was equivalent to the environment (natural or reduced radiation); factor B to water condition (with a 2 cm flooded or without); and, factor C the herbicides: cyhalofop butyl (315 g ha-1), glyphosate (1080 g ha-1), cyhalofop butyl + glyphosate (315 g ha-1 + 1080 g ha-1) and control (without application) in the first experiment. In the second experiment, the herbicides used were cyhalofop butyl (315 g ha-1), glyphosate (1080 g ha-1), sethoxydim (184g ha-1), imazethapyr (106 g ha-1) and control (without application). Glyphosate efficiently controls plants of tough lovegrass with four tillers (>90%), being superior to cyhalofop, imazethapyr and sethoxydim; independently, of resource conditions. Reduction in the availability of solar radiation generates less shoot dry mass production from the weed, and improves the control only by imazethapyr and cyhalofop. In general, a flooded condition does not affect tough lovegrass control by herbicides.Key words: flooded, glyphosate, pasture, shading, weed control. Manejo integrado de capim-annoni (Eragrostis plana Nees): associando ferramentas do controle químico e fisiologia da planta RESUMO:O objetivo do trabalho foi avaliar a eficiência de uso de herbicidas no controle de capim-annoni em função da disponibilidade de radiação solar e da presença ou ausência de lâmina de água. Para isso, foram conduzidos dois experimentos em delineamento inteiramente casualizado, em esquema fatorial 2x2x4 e 2x2x5, em que o fator A equivaleu ao ambiente (radiação natural ou reduzida); fator B à condição hídrica (com lâmina d?água de 2 cm ou sem); e, o fator C aos herbicidas: cyhalofop butyl (315 g ha-1), glyphosate (1080 g ha-1), cyhalofop butyl + glyphosate (315 g ha-1 + 1080 g ha-1) e testemunha (sem aplicação) no primeiro experimento. No segundo experimento, os herbicidas utilizados foram: cyhalofop butyl (315 g ha-1), glyphosate (1080 g ha-1), sethoxydim (184 g ha-1), imazethapyr (106 g ha-1) e testemunha (sem aplicação). Glyphosate controla eficientemente plantas de capim-annoni com quatro afilhos (>90%), sendo superior a cyhalofop butyl, imazethapyr e sethoxydim, independente das condições. A redução da disponibilidade de radiação solar gera menor produção de matéria seca da parte aérea pelo capim-annoni, podendo inclusive, contribuir para maior eficiência de controle somente por imazethapyr e cyhalofop. De maneira geral, a condição de lâmina d?água não afeta o controle de capim-annoni pelos herbicidas.Palavras-chave: lâmina d ́água, glifosato, pastagem, sombreamento, controle de plan Made available in DSpace on 2021-02-03T15:19:21Z (GMT). No. of bitstreams: 1 Faleiro-et-al.pdf: 861008 bytes, checksum: a7fd00abb8939065facb2a0e6bf6abee (MD5) Previous issue date: 2021
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- 2021
16. Desplazamientos forzados en el desarrollo de desastres ambientales: la violación de los Derechos Humanos como requisito previo para el reconocimiento del refugio ambiental en Brasil = Forced displacements in the development of environmental disasters: violation of Human Rights as a prerequisite for the recognition of the environmental refuge in Brazil
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Gonçalves, Rubén Miranda and Silva, Letícia Mirelli Faleiro e
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DOI: http://dx.doi.org/10.18623/rvd.v17i37.1606 Submitted by betanial@stj.jus.br (betanial@stj.jus.br) on 2020-05-25T22:50:50Z No. of bitstreams: 2 desplazamientos_forzados_desarrollo_goncalves.pdf: 396206 bytes, checksum: 059bd89a3d40979a8895bcda607544e6 (MD5) license.txt: 1239 bytes, checksum: c9b4c351324448672315a00808efb725 (MD5) Approved for entry into archive by rsmoira@stj.jus.br (rsmoira@stj.jus.br) on 2020-05-26T00:38:47Z (GMT) No. of bitstreams: 2 license.txt: 1239 bytes, checksum: c9b4c351324448672315a00808efb725 (MD5) desplazamientos_forzados_desarrollo_goncalves.pdf: 396206 bytes, checksum: 059bd89a3d40979a8895bcda607544e6 (MD5) Made available in DSpace on 2020-05-26T00:38:47Z (GMT). No. of bitstreams: 2 license.txt: 1239 bytes, checksum: c9b4c351324448672315a00808efb725 (MD5) desplazamientos_forzados_desarrollo_goncalves.pdf: 396206 bytes, checksum: 059bd89a3d40979a8895bcda607544e6 (MD5) Previous issue date: 2020 Aborda o problema do deslocamento humano causado por desastres ambientais e pela mudança climática. Investiga, à luz de uma análise do Estatuto dos Refugiados sob a perspectiva do princípio pro homine, a proteção legal necessária para essas pessoas deslocadas involuntariamente pela falta de condições de permanecerem na área afetada.
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- 2020
17. Functionally Graded Multilayered Soil Models, an Alternative to Modeling the Soil Electrical Resistivity for Computing the Grounding Resistance
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Paramo, R., primary, Faleiro, E., additional, Asensio, G., additional, and Moreno, J., additional
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- 2021
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18. DESPLAZAMIENTOS FORZADOS EN EL DESARROLLO DE DESASTRES AMBIENTALES: LA VIOLACIÓN DE LOS DERECHOS HUMANOS COMO REQUISITO PREVIO PARA EL RECONOCIMIENTO DEL REFUGIO AMBIENTAL EN BRASIL
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Miranda Gonçalves, Rubén, primary and Faleiro e Silva, Letícia Mirelli, additional
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- 2020
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19. Epistasia em testecrosses de milho
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Diego Velásquez Faleiro e Silva, Claudio Lopes de Souza Junior, Lazaro Jose Chaves, Isaias Olivio Geraldi, Norberto da Silva, and Roland Vencovsky
- Abstract
A epistasia já é conhecida desde o início dos estudos em genética, porém sua contribuição para as estimativas dos componentes da variância genética e para o melhoramento genético ainda não é bem entendida. A maioria dos modelos usados para estudar a herança dos caracteres quantitativos considera apenas os efeitos genéticos aditivos e de dominância, assumindo ausência da epistasia, mesmo que as análises não forneçam testes para tal suposição. Portanto, na sua presença, estimativas de variância aditiva e dominância, coeficientes de herdabilidade e respostas esperadas com a seleção estão viesadas. Os objetivos deste estudo foram: (i) verificar se a epistasia está presente na expressão de diversos caracteres em testecrosses; (ii) estimar os efeitos epistáticos em cada planta 2 F para estes caracteres; e (iii) verificar se a epistasia interage com ambientes e testadores. Uma população de 100 progênies F2:3 foi obtida do cruzamento das linhagens endogâmicas L-08-05F e L-38-05D e foram retrocruzadas com as linhagens parentais e sua geração 1 F , conforme o delineamento triple test cross. As 300 progênies de retrocruzamento foram cruzadas com as linhagens testadoras L-02-03D e L-04-05F. Os testecrosses obtidos foram avaliados em dez ambientes no município de Piracicaba, SP, em delineamento látice a no esquema fatorial com duas repetições por ambientes. Os caracteres avaliados foram produção de grãos, prolificidade, acamamento e quebramento de plantas, florescimento masculino e feminino, intervalo entre florescimentos, altura de planta e espiga e posição relativa da espiga. A presença de epistasia foi detectada para todos os caracteres nos testecrosses de ambos testadores, exceto para acamamento e quebramento de plantas em que a epistasia foi observada somente nos testecrosses provenientes do testador L-04-05F. Cada testador detectou efeitos epistáticos em diferentes grupos de plantas 2 F e estes não foram unidirecionais para todos os caracteres avaliados. A interação epistasia por testador foi significativa para todos os caracteres, enquanto que a interação epistasia x ambientes não foi observada para nenhum caráter em ambos testadores. A presença de desequilíbrio de ligação na população foi observada para todos os caracteres, exceto para acamamento e quebramento. As estimativas dos componentes de variância e dos coeficientes de herdabilidade diferiram significativamente de zero, com exceção dos parâmetros estimados para os testecrosses do testador L-04-05F para o caráter acamamento e quebramento. Os resultados sugerem que as estimativas da variância aditiva e dos coeficientes de herdabilidade para aqueles caracteres nos quais foi verificada a presença de epistasia estarão viesados, caso a epistasia seja desconsiderada. Além disso, a presença de desequilíbrio de ligação na população gera vieses adicionais nas estimativas desses parâmetros. Epistasis has been known since the beginning of the genetics studies. However its contribution to genetic variance components and to plant breeding is not well understood. Most of the genetic models designed to study the inheritance of the quantitative traits consider the absence of epistasis although most of these analyses dont provide test for such assumption. Therefore in its presence estimates of additive and dominance variances, heritability coefficients and selection responses would be biased. The objectives of this study were: (i) to verify whether epistasis is significant to the expression of several traits in testcrosses; (ii) to estimate the epistatic effects in individual 2 F plants for these traits; and (iii) to verify whether epistasis interacts with environment and with testers. A population of 100 3 : 2 F progenies from the cross of inbred lines L-08-05F and L-38-05D were backcrossed to the parental lines and their 1 F following the triple test cross design. The 300 backcrossed progenies were testcrossed to the inbred lines L-02-03D and L-04-05F. The 600 testcrosses were grown at ten environments in Piracicaba, SP, using the látice a design on a factorial scheme with two replications per environment. The traits recorded were grain yield, prolificacy, root and stalk lodging, days to anthesis, days to silk emergence, anthesis-silking interval, plant height, ear height and ear placement. Epistasis was detected for all traits in both testcrosses, but for root and stalk lodging epistasis was detected only in the testcrosses from L-04-05F tester. Each tester detected epistasis in different groups of 2 F plants, and the epistatic effects were not unidirectional for all traits. The epistasis by tester interaction was significant for all traits in both testers, but epistasis by environment interaction was not significant for all traits. Also linkage disequilibrium in the population was detected for all traits, except for root and stalk lodging. Estimates of variance components and heritability coefficients were all significant, except for testcrosses from L-04-05F tester for root and stalk lodging. The results suggested that the estimates of additive variance and heritability coefficients will be biased if the epistasis be unconsidered. Moreover the presences of linkage disequilibrium produce additional biases in the estimative theses parameters.
- Published
- 2015
20. Estimation of an Upper Bound to the Value of the Step Potentials in Two-Layered Soils from Grounding Resistance Measurements.
- Author
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Moreno J, Simon P, Faleiro E, Asensio G, and Fernandez JA
- Abstract
Due to the constant updating of regulatory standards on safety issues in electrical installations, limits are established for the maximum step potential that an installation can hold in a ground fault situation. In this paper, an upper bound to the maximum value of the step potentials arising in the soil surface when a fault takes place in a grounded electrical installation is estimated by means of a simple procedure. The direct measurement of the grounding electrode resistance together with some information about the soil resistivity and the knowledge of characteristic parameters of the electrode are used for the calculation of that upper bound. The procedure is tested at numerical simulation level by using different electrodes in several different scenarios corresponding to two-layered soils with different resistivity ratios. The dependency of the calculated upper bound with the electrode burial depth is also studied. Finally, a real case study is presented, and the results of the field measurements are shown as an example of the validity of the procedure., Competing Interests: The authors declare no conflict of interest
- Published
- 2020
- Full Text
- View/download PDF
21. Shell-Model studies of chaos and statistical properties in nuclei
- Author
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Gómez, J. M.G., Faleiro, E., Muñoz, L., Molina, Rafael A., Relaño, Armando, Gómez, J. M.G., Faleiro, E., Muñoz, L., Molina, Rafael A., and Relaño, Armando
- Abstract
Shell-model calculations with realistic empirical interactions constitute an excellent tool to study statistical properties of nuclei. Using large-scale shell-model calculations in pf- shell nuclei, we study how the onset of chaos depends on different properties of the nuclear interaction and on excitation energy. We make use of classical random matrix theory and other theoretical developments based on information theory and time series analysis. We show that besides energy-level statistics, other statistical properties like the complexity of wave functions are fundamental for a proper determination of the dynamical regime of nuclei. Important deviations from GOE are observed in level fluctuations and in the complexity of wave functions.
- Published
- 2015
22. Interaction Between Interconnected and Isolated Grounding Systems: A Case Study of Transferred Potentials
- Author
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Faleiro, E., primary, Pazos, F. J., additional, Asensio, G., additional, Denche, G., additional, Garcia, D., additional, and Moreno, J., additional
- Published
- 2015
- Full Text
- View/download PDF
23. Shell-Model studies of chaos and statistical properties in nuclei
- Author
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Gómez, J M G, primary, Faleiro, E, additional, Muñoz, L, additional, Molina, R A, additional, and Relaño, A, additional
- Published
- 2015
- Full Text
- View/download PDF
24. A Simple Procedure to Obtain the Grounding Resistance Measurement of Very Large and Urban Electrodes by a Modified Fall-of-Potential Method.
- Author
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Moreno, Jorge, Simón, Pascual, Faleiro, Eduardo, García, Daniel, Denche, Gregorio, and Asensio, Gabriel
- Subjects
ELECTRODE potential ,CITIES & towns ,CORRECTION factors ,ELECTRODES - Abstract
Featured Application: This study presents a simple method for correcting field measurements of grounding resistance, allowing for a highly accurate value of this parameter to be obtained. The measurement of the grounding resistance of grounding grids in large installations as well as grounding electrodes in urban areas is addressed in this article. The resistance value is obtained using a three-pin array by measuring the fall-of-potential on the ground surface. The resistance measured by this method is adjusted to its true value using a correction factor that aligns the measured resistance with the actual value. The proposed measurement method obtains correct values of the grounding resistance even when the auxiliary and potential electrodes of the tree-pin array are close to the electrode to be measured. Thus, it can be applied to large electrodes as well as electrodes in urban areas. Several simulated examples are used to illustrate the method, and some real cases with field measurements are presented for a final validation of the method. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
25. Hadronic Energy Scale Calibration of Calorimeters in Space Using the Moon's Shadow.
- Author
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Oliva, Alberto
- Subjects
CALORIMETERS ,LOW earth orbit satellites ,EARTH'S orbit ,GEOMAGNETISM ,COSMIC rays ,HADRONIC showers ,CALIBRATION ,ECLIPSES - Abstract
Calorimetric experiments in space of the current and of the next generation measure cosmic rays directly above TeV on satellites in low Earth orbit. A common issue of these detectors is the determination of the absolute energy scale for hadronic showers above TeV. In this work, we propose the use of the Moon–Earth spectrometer technique for the calibration of calorimeters in space. In brief, the presence of the Moon creates a detectable lack of particles in the detected cosmic ray arrival directions. The position of this depletion has an offset with respect to the Moon center due to the deflection effect of the geomagnetic field on the cosmic rays that depends on the energy and the charge of the particle. The developed simulation will explore if, with enough statistics, angular, and energy resolutions, this effect can be exploited for the energy scale calibration of calorimeters on satellites in orbit in Earth's proximity. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
26. Israel-Palestine Conflict: Role of India & Major Global Players.
- Author
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DASH, SATYA PRAKASH
- Subjects
ARAB-Israeli conflict ,LEGITIMACY of governments ,INTERNATIONAL communication - Abstract
The paper traces the origin of the Middle East conflict and discusses the gradual evolution of the Israel-Palestine conflict from a historical perspective. The paper discusses the peace negotiations undertaken for the region during different periods and the contribution of the international community in reaching a compromise formula. The paper discusses the emergence and the role of Hamas and how it gained political legitimacy. The paper concludes with the views of Israel and India perspective. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
27. The Effect of Sulfur and Cutting Height on the Growth Characteristics of Sorghum Crop (Buhooth 70).
- Author
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Al-Dawoodi, Mohammed N. and Al-Beiruty, Rzan Z. A.
- Published
- 2023
- Full Text
- View/download PDF
28. A Normalized Global Economic Policy Uncertainty Index from Unsupervised Machine Learning.
- Author
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Xu, Wangfang, Rao, Wenjia, Wei, Longbao, and Wang, Qianqian
- Subjects
ECONOMIC uncertainty ,ECONOMIC policy ,MACHINE learning ,GOLD futures ,BUSINESS cycles - Abstract
In this work, we integrate the conventional unsupervised machine learning algorithm—the Principal Component Analysis (PCA) with the Random Matrix Theory to propose a novel global economic policy uncertainty (GPEU) index that accommodates global economic policy fluctuations. An application of the Random Matrix Analysis illustrates the majority of the PCA components of EPU's mirror random patterns that lack substantial economic information, while the only exception—the dominant component—is non-random and serves as a fitting candidate for the GEPU index. Compared to the prevalent GEPU index, which amalgamates each economy's EPU weighted by its GDP value, the new index works equally well in identifying typical global events. Most notably, the new index eliminates the requirement of extra economic data, thereby avoiding potential endogeneity in empirical studies. To demonstrate this, we study the correlation between gold future volatility and GEPU using the GARCH-MIDAS model, and show that the newly proposed GEPU index outperforms the previous version. Additionally, we employ complex network methodologies to present a topological characterization of the GEPU indices. This research not only contributes to the advancement of unsupervised machine learning algorithms in the economic field but also proposes a robust and effective GEPU index that outperforms existing models. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
29. Non-ergodic extended regime in random matrix ensembles: insights from eigenvalue spectra.
- Author
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Xu, Wang-Fang and Rao, W. J.
- Subjects
RANDOM matrices ,EIGENVALUES - Abstract
The non-ergodic extended (NEE) regime in physical and random matrix (RM) models has attracted a lot of attention in recent years. Formally, NEE regime is characterized by its fractal wavefunctions and long-range spectral correlations such as number variance or spectral form factor. More recently, it's proposed that this regime can be conveniently revealed through the eigenvalue spectra by means of singular-value-decomposition (SVD), whose results display a super-Poissonian behavior that reflects the minibands structure of NEE regime. In this work, we employ SVD to a number of RM models, and show it not only qualitatively reveals the NEE regime, but also quantitatively locates the ergodic-NEE transition point. With SVD, we further suggest the NEE regime in a new RM model–the sparse RM model. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
30. Increasing Italian ryegrass (Lolium multiflorum Lam.) regrowth via inoculation with an ammonia‐oxidizing bacterial strain.
- Author
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Wu, Di, Ma, Ke, Wang, Xiao‐Ling, Qi, Lin, Liu, Yu‐Hua, Song, Peng, Liu, Wei, Zhang, Ming‐Ming, Zhao, Wei, and Song, Cheng‐Wei
- Subjects
ITALIAN ryegrass ,RHIZOSPHERE ,SOIL inoculation ,NITRIFICATION inhibitors ,NITROGEN in soils ,VACCINATION - Abstract
This study aimed to investigate the effect of a soil ammonia‐oxidizing bacterial (AOB) strain on Italian ryegrass (Lolium multiflorum Lam.) regrowth. Potted Italian ryegrass was used as test material. We isolated and screened an AOB strain from the soil for use in inoculation of other soils to increase nitrification. The sequence of the two isolated and screened AOB strains (S2_8_1 and S2_7_25) were 100% similar to that of Ensifer sesbaniae and Acinetobacter pittii. The nitrification inhibitor 3,4‐dimethylpyrazole phosphate (DMPP) was also added to the soil to inhibit nitrification. The experimental design involving the inoculation of the soils with the AOB strain included seven treatments: (1) regrowth without any additives, (2) regrowth with blank enrichment medium added to the soil, (3) regrowth with S2_8_1 strain inoculation, (4) regrowth with S2_7_25 strain inoculation, (5) regrowth with DMPP added to the soil, (6) regrowth with DMPP added to the soil and with S2_8_1 strain inoculation, and (7) regrowth with DMPP added to the soil and with S2_7_25 strain inoculation. Compared with regrowth treatment without any additives, the regrowth treatment with S2_8_1 and S2_7_25 inoculations significantly increased leaf biomass by 23.5–48.6%, the leaf net photosynthetic rate by 27.9–48.5%, the rhizosphere soil nitrification rate by 43.0–144.2%, leaf cytokinin concentrations by 23.7–24.9%, and xylem sap cytokinin concentrations by 32.5–43.2%. The increase of nitrate nitrogen content in rhizosphere soil induced by S2_8_1 and S2_7_25 promoted the transfers of cytokinin from roots to leaves, resulting in the increase of cytokinin concentration in leaves. This increase in leaf cytokinin concentrations improved Italian ryegrass regrowth. However, the S2_8_1 and S2_7_25‐induced increases in the nonrhizosphere soil nitrification rate were not closely related to Italian ryegrass regrowth. The tested AOB strains have considerable potential to increase Italian ryegrass regrowth. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
31. A Fast Calculation of Partially Corroded, Grounding-Resistive Electrode Electrical Parameters.
- Author
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Denche, Gregorio, Faleiro, Eduardo, Asensio, Gabriel, and Moreno, Jorge
- Subjects
ELECTRODES ,PARTIAL oxidation ,SURFACE coatings - Abstract
Featured Application: The proposed model can be applied to the assessment of the electrical parameters of non-perfect conducting grounding electrodes that are partially affected by corrosion. The calculation of the grounding resistance of electrodes built with partially oxidized non-perfect conductors is addressed in this paper. A model based on circuit analysis to account for internal resistance is used, while the oxidation or partial coating of the conductor surface is modeled using the concept of the equivalent radius of the coated electrode. From the proposed model, the values of the electrical parameters of the grounding electrodes, such as the grounding resistance and the step and touch potentials, are calculated for real electrodes affected by coating or corrosion and compared with those values under ideal conditions. The results show significant differences in certain configurations that may compromise the safety margins established by current regulations. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
32. Average-fluctuation separation in energy levels in many-particle quantum systems with k-body interactions using q-Hermite polynomials.
- Author
-
Chavda, N D
- Abstract
Separation between average and fluctuation parts in state density in many-particle quantum systems with k-body interactions, modelled by the k-body embedded Gaussian orthogonal random matrices (EGOE(k)), is demonstrated using the method of normal mode decomposition of the spectra and verified using power spectrum analysis, for both fermions and bosons. The smoothed state density is represented by the q-normal distribution ( f qN ) (with corrections) which is the weight function for q-Hermite polynomials. As the rank of interaction k increases, the fluctuations set in with smaller order of corrections in the smooth state density. They are found to be of GOE type, for all k values, for both fermion and boson systems. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
33. THE LEGAL INSTITUTE OF REFUGE: A STUDY ON CONTEMPORARY FORCED MIGRATION FLOWS AND THE INTERNATIONAL RESPONSIBILITY OF THE STATE IN THE PROTECTION OF REFUGEES.
- Author
-
MIRANDA GONÇALVES, RUBÉN
- Subjects
HUMAN migration patterns ,FORCED migration ,CONVENTION Relating to the Status of Refugees (1951) ,EMIGRATION & immigration ,PERSECUTION ,GOVERNMENT liability ,POLITICAL attitudes ,SOCIAL groups - Abstract
Copyright of Revista Jurídica (0103-3506) is the property of Revista Juridica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
34. Design of an Underground Transmission Line Condition Fault Monitoring System for Power Grids Based on Data Analysis Algorithms.
- Author
-
Wang, Liunai, Jiang, Wen, and Dong, Weiwei
- Subjects
ELECTRIC lines ,BIG data ,ELECTRIC power distribution grids ,DATA analysis ,GRIDS (Cartography) ,K-nearest neighbor classification ,ELECTRIC transients ,GROUND penetrating radar - Abstract
With the continuous expansion of the scale, capacity, and coverage of the modern transmission network, the role of the power system in the national economy is increasingly prominent, and the disconnection of the power system will have a huge impact on society and people's lives. Due to the long transport distance and wide coverage of transmission lines, natural conditions and human factors have caused great difficulties in line operation and maintenance. How to effectively improve the operation and maintenance of transmission lines to ensure the stability and safety of the power grid has become a common problem for the power industry and scientific researchers to discuss. In recent years, the information society has stepped into the era of big data, and big data has developed rapidly, becoming a hot area favored by academia and industry, and is widely used. Through big data analysis, potential operation rules can be discovered from a large amount of grid information, providing maintenance personnel with corresponding maintenance decision support. Using big data technology for transmission line fault analysis can effectively reduce accident processing time and avoid accident expansion. Therefore, this paper combines the underground transmission line fault of power grid with the fuzzy KNN algorithm model to apply the underground transmission line state intelligent monitoring system and conducts the study of real-time data collection and fault diagnosis analysis of the underground transmission line fault of power grid, and this paper conducts the transmission line fault analysis experiment, which fully confirms the feasibility and effectiveness of the algorithm model proposed in the paper and concludes that the data analysis model proposed in this paper. The proposed data analysis model has good innovation and practical feasibility. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
35. A Method for Calculating Grounding Resistance of Reinforced Concrete Foundation Grounding Systems.
- Author
-
Dou, Bowen, Liu, Rui, Tu, Youping, and Zhang, Bo
- Subjects
REINFORCED concrete ,CROSS-sectional method ,MOMENTS method (Statistics) ,ICE shelves ,CONCRETE ,NUMERICAL calculations - Abstract
Tower foundations have been used as grounding electrodes to reduce the area of the grounding devices. However, it is difficult to calculate the grounding resistance due to the complex structure of the reinforced concrete foundation. A method for calculating grounding resistance of reinforced concrete foundations is proposed in this paper. The method equates the complex foundation structure into a cylindrical conductor and then calculates the grounding resistance with the help of the method of moments, which simplifies establishment of the simulation model and reduces the extensive computation. In addition, the applicability of the equal cross-sectional area method and the equal cross-sectional perimeter method is analyzed. It shows that both methods are applicable only when the concrete resistivity is close to the soil resistivity. The equal cross-sectional area method is applicable when the concrete resistivity is within twice the soil resistivity, while the equal cross-sectional perimeter method is applicable when the concrete resistivity is approximately same or less than the resistivity of the soil. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
36. A INFLUÊNCIA DE SITES E BLOGS PRÓ-ANA E PRÓ-MIA NO DESENVOLVIMENTO E AGRAVAMENTO DOS TRANSTORNOS ALIMENTARES EM ADOLESCENTES.
- Author
-
Somaggio Souza, Marília and Garcia Manochio-Pina, Marina
- Subjects
WEB development ,ONLINE social networks ,SCIENTIFIC literature ,BULIMIA ,ANOREXIA nervosa - Abstract
Copyright of Revista Brasileira de Obesidade, Nutrição e Emagrecimento is the property of Instituto Brasileiro de Pesquisa e Ensino em Fisiologia do Exercicio and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
37. Jacques Copeau: uma vida dedicada à renovação do teatro
- Author
-
Evandro Luis Teixeira
- Subjects
jacques copeau ,teatro francês ,pedagogia teatral ,Arts in general ,NX1-820 ,Visual arts ,N1-9211 - Abstract
O presente artigo é resultado do Projeto de Pesquisa Poética, Ética e Estética na Pedagogia Teatral de Jacques Copeau – financiado pelo PROBIC/UDESC – que se propõe a pesquisar os textos de Jacques Copeau ainda não disponíveis em Língua Portuguesa, através das traduções do orientador Prof. Dr. José Ronaldo Faleiro e de outros autores que discutem a sua obra. O objetivo deste artigo é possibilitar maiores esclarecimentos sobre a vida e a obra de Jacques Copeau.
- Published
- 2019
- Full Text
- View/download PDF
38. Effect of Non-Homogeneous Soil Characteristics on Substation Grounding-Grid Performances: A Review.
- Author
-
Permal, Navinesshani, Osman, Miszaina, Ariffin, Azrul Mohd, and Abidin Ab Kadir, Mohd Zainal
- Subjects
SOILS ,SOIL composition ,FAULT currents ,SOIL testing ,SYSTEM analysis ,ICE shelves ,SOIL structure - Abstract
Designing an effective grounding system for AC substations needs predetermination of ground resistance and ground potential distribution caused by fault current's presence in the ground. Therefore, it is necessary to have a suitable grounding grid structure in the soil properties in which the grid is buried. Though the soil composition where the grounding grid is located is typically non-homogeneous, the soil is often presumed to be homogeneous due to the complexities of grounding system analysis in non-homogeneous soil. This assumption will lead to inaccuracies in the computation of ground resistance and ground potentials. Although extensive research has been done on non-homogeneous soil structure, comprehensive literature on grounding system performance in non-homogeneous soil is yet to be reviewed. Thus, this paper reviews the effect of non-homogeneous soil on the grounding system, with different soil characteristics in horizontal and vertical two-layer soil structure and the horizontal three-layer soil structure. In addition, the effect of design parameters on the grounding performance in non-homogeneous soil conditions for non-transient fault conditions is also studied. The significance of this study is that it provides a comprehensive review of grounding performance as grounding design changes and their effects as soil layers and their corresponding features change. This knowledge will be useful in developing safe grounding designs in non-homogeneous soil. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
39. Partial dynamical symmetry versus quasi dynamical symmetry examination within a quantum chaos analyses of spectral data for even–even nuclei.
- Author
-
Sabri, H., Mobarakeh, S. K. Mousavi, Majarshin, A. J., Luo, Yan-An, and Pan, Feng
- Subjects
QUANTUM chaos ,STATISTICAL correlation ,GAMMA rays ,HAMILTONIAN systems ,HEAVY nuclei - Abstract
Statistical analyses of the spectral distributions of rotational bands in 51 deformed prolate even–even nuclei in the 152 ≤ A ≤ 250 mass region R 4 1 + / 2 1 + ≥ 3.00 are examined in terms of nearest neighbor spacing distributions. Specifically, the focus is on data for 0
+ , 2+ , and 4+ energy levels of the ground, gamma, and beta bands. The chaotic behavior of the gamma band, especially the position of the 2 γ + band-head compared to other levels and bands, is clear. The levels are analyzed within the framework of two models, namely, a SU(3)-partial dynamical symmetry Hamiltonian and a SU(3) two-coupled quasi-dynamical symmetry Hamiltonian, with results that are further analyzed using random matrix theory. The partial and quasi dynamics both yield outcomes that are in reasonable agreement with the known experimental results. However, due to the degeneracy of the beta and gamma bands within the simplest SU(3) picture, the theory cannot be used to describe the fluctuation properties of excited bands. By changing relative weights of the different terms in the partial and quasi dynamical Hamiltonians, results are obtained that show more GOE-like statistics in the partial dynamical formalism as the strength of the pairing term is increased. Also, in the quasi-dynamical symmetry limit, more correlations are found because of the stronger couplings. [ABSTRACT FROM AUTHOR]- Published
- 2021
- Full Text
- View/download PDF
40. Reduction of the step voltages of MV/LV substation grounding system based on shaping electric field.
- Author
-
SIKORA, ROMAN and MARKIEWICZ, PRZEMYSŁAW
- Subjects
ELECTRIC fields ,VOLTAGE ,EARTH currents ,FINITE element method ,EARTHFLOWS - Abstract
The article presents the analysis results of the effectiveness limitation of the step voltage by forming an electric field on the ground surface. For shaping the electric field, a method consisting of screens placed around the point of the earth current flow was used. The analysis was performed using an example of an MV/LV substation grounding system. This research was conducted applying a mathematical model of the grounding system and screens by means of the finite element method. The influence of metal, insulating screens and surface material on the step/touch voltage values for the considered grounding system was estimated. Most of the methods described can be applied in practice. In the opinion of the authors, the method of using screens made of insulating and conductive materials has not been sufficiently described in the literature. Moreover, in the available literature there is no in-depth analysis of the described electric field shaping methods. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
41. Effect of Earthing Enhancing Compound (EEC) on Improving Tower Footing Resistance of a 500 kV Tower in a Rocky Area.
- Author
-
Nasir, Nur Alia Farina Mohd, Kadir, Mohd Zainal Abidin Ab, Osman, Miszaina, Abd Rahman, Muhamad Safwan, Ungku Amirulddin, Ungku Anisa, Mohd Nasir, Mohd Solehin, Zaini, Nur Hazirah, and Nik Ali, Nik Hakimi
- Subjects
SOIL profiles ,SOIL testing ,CURRENT distribution ,SOILS ,ELECTRIC lines ,SOIL structure - Abstract
This paper presents a comparative analysis of different earthing designs' performances, with particular interest on the use of earthing enhancing compound (EEC) for a selected earthing design of 500 kV transmission towers in a rocky soil, using the SESCAD tool of the Current distribution, electromagnetic field grounding and soil structure analysis (CDEGS) software. The simulation included the interpretation of soil profile and comparison between designs A, B and C, which are currently used for the 500 kV tower footing resistance (TFR) improvement. Results showed each design had reduced the TFR by 66%, 54.7% and 63.2% for the towers T42, T48 and T50, respectively. In some cases, further improvement of TFR is required, especially in the rocky area where the soil resistivity (SR) value is of more than 500 Ω⋅m. In this case, EEC was used in Design C, encasing both the vertical and horizontal electrodes, and it reduced the TFR further by 16% to 20%. The characteristics of the soil and earthing arrangement design play an important role in achieving a low TFR value, which is directly proportional to the backflashover occurrence and thus to the transmission line performance. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
42. Grounding Electrodes with Internal Resistance: Application to Feasibility Study of the Driven-Rod Method for Modeling the Soil Electrical Resistivity Profile.
- Author
-
Denche, Gregorio, Faleiro, Eduardo, Asensio, Gabriel, and Moreno, Jorge
- Subjects
ELECTRICAL resistivity ,FEASIBILITY studies ,ELECTRODES ,SOIL profiles ,SOILS ,SOIL sampling - Abstract
Featured Application: The model proposed in the paper can be applied to any electrode to assess the impact of its internal resistance on the main parameters that define a grounding system. The paper presents a model to include the internal resistance of the grounding electrodes in the calculation of its electrical features. The semi-analytical expressions for the calculation of the grounding resistance arising from the model are used to study the feasibility of the driven-rod method for the estimation of the soil resistivity profile since, unlike other methods, the internal resistance of the conductors can be of great influence for a correct estimate. From the grounding resistance profile an inverse problem based on the minimization of the quadratic differences between the resistance measured and that calculated from the model is posed. Several synthetic examples are used to assess the limitations of the method in conditions close to real situations. Finally, some real cases involving data measured in the field are analyzed. Whether in synthetic examples or in real soils it is found that the spatial frequency of the driven-rod resistance sampling is a determinant factor in order to study the feasibility of the driven–rod method. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
43. Lightning analysis of adjacent grounding systems using multi‐conductor transmission line method.
- Author
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Jamali, Morteza, Niasati, Mohsen, and Jazaeri, Mostafa
- Subjects
HUMAN beings ,ELECTRICAL conductors ,ELECTRIC lines ,LIGHTNING ,ELECTRON tube grids - Abstract
The analysis of adjacent grounding systems under lightning currents which is responsible for many safety problems to human beings and damages to devices is very important. In this study, the behaviours of such grounding grids under lightning conditions which are not well documented in the literature are analysed using the multi‐conductor transmission line method in a two‐layer soil model. To achieve this goal, the expressions related to the study of a single grounding grid extracted from the recent study of the authors are developed to be appropriate to the analysis of adjacent grounding systems under lightning currents. Also, through the representation of the connectivity matrix, the analysis of the adjacent grounding grids with any size and degree of complexity is facilitated. Furthermore, the behaviours of the adjacent grounding grids under different lightning and soil characteristics are examined and some conclusions are derived. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
44. Toward New Modalities in VEP-Based BCI Applications Using Dynamical Stimuli: Introducing Quasi-Periodic and Chaotic VEP-Based BCI.
- Author
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Shirzhiyan, Zahra, Keihani, Ahmadreza, Farahi, Morteza, Shamsi, Elham, GolMohammadi, Mina, Mahnam, Amin, Haidari, Mohsen Reza, and Jafari, Amir Homayoun
- Subjects
VISUAL evoked potentials ,COMPUTER interfaces - Abstract
Visual evoked potentials (VEPs) to periodic stimuli are commonly used in brain computer interfaces for their favorable properties such as high target identification accuracy, less training time, and low surrounding target interference. Conventional periodic stimuli can lead to subjective visual fatigue due to continuous and high contrast stimulation. In this study, we compared quasi-periodic and chaotic complex stimuli to common periodic stimuli for use with VEP-based brain computer interfaces (BCIs). Canonical correlation analysis (CCA) and coherence methods were used to evaluate the performance of the three stimulus groups. Subjective fatigue caused by the presented stimuli was evaluated by the Visual Analogue Scale (VAS). Using CCA with the M2 template approach, target identification accuracy was highest for the chaotic stimuli (M = 86.8, SE = 1.8) compared to the quasi-periodic (M = 78.1, SE = 2.6, p = 0.008) and periodic (M = 64.3, SE = 1.9, p = 0.0001) stimulus groups. The evaluation of fatigue rates revealed that the chaotic stimuli caused less fatigue compared to the quasi-periodic (p = 0.001) and periodic (p = 0.0001) stimulus groups. In addition, the quasi-periodic stimuli led to lower fatigue rates compared to the periodic stimuli (p = 0.011). We conclude that the target identification results were better for the chaotic group compared to the other two stimulus groups with CCA. In addition, the chaotic stimuli led to a less subjective visual fatigue compared to the periodic and quasi-periodic stimuli and can be suitable for designing new comfortable VEP-based BCIs. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
45. An Estimator of the Resistance of Large Grounding Electrodes from Its Geometric Characterization.
- Author
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Denche, Gregorio, Faleiro, Eduardo, Asensio, Gabriel, and Moreno, Jorge
- Subjects
ELECTRODES ,COMPACTING ,SOILS - Abstract
An estimator of the grounding resistance of large extension electrodes from the total length and geometric properties of the electrode is proposed in this work. The approximation is valid for electrodes buried in a soil that can be assumed as homogeneous and it will be verified that the resistance estimation improves as electrode size increases. Both the burial depth and the radius of the conductors, within certain practical limits, have little effect on the value of the grounding resistance. The shape and size of the electrode are defined by a geometric index that measures the degree of compaction of the conductors that make it up, which has the greatest weight in the final value of the resistance. The expression obtained to quantify the estimate of the grounding resistance is tested in several numerical examples and in a currently operating grounding electrode, obtaining in all cases an estimated value of the resistance reasonably close to the true value. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
46. Jacques Copeau e sua influência na EAD e no moderno teatro brasileiro
- Author
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Juliana Riechel, Nathalie Soler, and José Ronaldo Faleiro
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alfredo mesquita ,jacques copeau ,teatro brasileiro ,Arts in general ,NX1-820 ,Visual arts ,N1-9211 - Abstract
Este artigo tem o objetivo de analisar como os pensamentos e princípios teatrais defendidos pelo diretor, autor e ator francês Jacques Copeau chegaram ao Brasil, através do também diretor e autor brasileiro Alfredo Mesquita. Este ansiava por uma renovação do ator e do teatro brasileiro. Para isso, funda, em São Paulo, a Escola de Arte Dramática que passa a ter como base os ensinamentos de Jacques Copeau, um dos grandes reformadores do Teatro Francês. Este, por sua vez, havia fundado em paris uma Escola para atores, o Vieux Colombier. Para a realização desta pesquisa foram lidos textos escritos por Copeau, muitos traduzidos pelo Prof. Dr. José Ronaldo Faleiro, e discussões sobre o trabalho da Escola de Arte Dramática de Alfredo Mesquita e sua contribuição no moderno teatro brasileiro. Assim, foram levantados pontos de aproximação e afastamento entre Jacques Copeau e Alfredo Mesquita na prática das duas Escolas.
- Published
- 2018
- Full Text
- View/download PDF
47. Analysis the influence of corrosion layer on the grounding performance of grounding electrodes.
- Author
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Zhang, Zhanlong, Zou, Jing, Dan, Yihua, Ye, Huarui, Li, Yiqiao, and Deng, Jun
- Abstract
The grounding electrode buried in soil is prone to corrosion affected by soil and leakage current. The surface of corroded grounding electrodes is wrapped with corrosion product, which affects the normal current dissipation process and weakens the grounding performance. The accurate analysis of the grounding performance with corrosion layer can lay a solid theoretical basis for the safety of the power system. In this study, the corrosion layer is regarded as a layer of conductive medium between the electrode and soil. The leakage current along the electrode and the charge on the interface are analysed by coupling point matching method with boundary element method. Finally, the leakage current, grounding resistance, ground potential rise (GPR) and the step voltage of the two typical electrodes with corrosion layer are investigated. The results show that the corrosion layer causes the reduction of the leakage current at the end of the electrode and the enhancement of the leakage current in the middle location. Furthermore, the corrosion layer causes the increase of the grounding resistance and GPR, and the decrease of the step voltage. In addition, the influence of the reduced radius on the grounding performance is much smaller than that of the corrosion layer. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
48. JOGOS DE PODER E PROFISSIONALIZAÇÃO DOCENTE: DISCUTINDO AS SUBJETIVIDADES DO FEMININO NA SALA DE AULA.
- Author
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SANTOS, Welson B., FALEIRO, Wender, and de OLIVEIRA, Higor Junior
- Subjects
BIBLIOGRAPHICAL citations ,STUDENT teaching ,MOTHERS ,TEACHERS ,DISCOURSE analysis - Abstract
Copyright of Revista Ibero-Americana de Estudos em Educação is the property of Jose Luis Bizelli, editor of Revista Ibero-Americana de Estudos em Educacao and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2019
- Full Text
- View/download PDF
49. Overview of the gaps, challenges and prospects of red palm weevil management.
- Author
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Faleiro, Jose Romeno, Ferry, Michel, Yaseen, Thaer, and Al-Dobai, Shoki
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DATE palm ,MOBILE geographic information systems ,CURCULIONIDAE ,PHYTOSANITATION ,PALMS ,CAPACITY building - Abstract
Copyright of Arab Journal of Plant Protection is the property of Arab Society for Plant Protection and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2019
- Full Text
- View/download PDF
50. Introducing chaotic codes for the modulation of code modulated visual evoked potentials (c-VEP) in normal adults for visual fatigue reduction.
- Author
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Shirzhiyan, Zahra, Keihani, Ahmadreza, Farahi, Morteza, Shamsi, Elham, GolMohammadi, Mina, Mahnam, Amin, Haidari, Mohsen Reza, and Jafari, Amir Homayoun
- Subjects
CHAOS theory ,VISUAL evoked potentials ,ELECTROENCEPHALOGRAPHY ,LOGISTIC maps (Mathematics) ,BEAMFORMING - Abstract
Code modulated Visual Evoked Potentials (c-VEP) based BCI studies usually employ m-sequences as a modulating codes for their broadband spectrum and correlation property. However, subjective fatigue of the presented codes has been a problem. In this study, we introduce chaotic codes containing broadband spectrum and similar correlation property. We examined whether the introduced chaotic codes could be decoded from EEG signals and also compared the subjective fatigue level with m-sequence codes in normal subjects. We generated chaotic code from one-dimensional logistic map and used it with conventional 31-bit m-sequence code. In a c-VEP based study in normal subjects (n = 44, 21 females) we presented these codes visually and recorded EEG signals from the corresponding codes for their four lagged versions. Canonical correlation analysis (CCA) and spatiotemporal beamforming (STB) methods were used for target identification and comparison of responses. Additionally, we compared the subjective self-declared fatigue using VAS caused by presented m-sequence and chaotic codes. The introduced chaotic code was decoded from EEG responses with CCA and STB methods. The maximum total accuracy values of 93.6 ± 11.9% and 94 ± 14.4% were achieved with STB method for chaotic and m-sequence codes for all subjects respectively. The achieved accuracies in all subjects were not significantly different in m-sequence and chaotic codes. There was significant reduction in subjective fatigue caused by chaotic codes compared to the m-sequence codes. Both m-sequence and chaotic codes were similar in their accuracies as evaluated by CCA and STB methods. The chaotic codes significantly reduced subjective fatigue compared to the m-sequence codes. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
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