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Search Results: 1 - 10 of 2316 matches for " arena principle "
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Multi-Objective Optimization Problems with Arena Principle and NSGA-II
Wang Dong-Feng,Xu Feng
Information Technology Journal , 2010,
Abstract: Existing test problems for multi-objective optimization are mainly criticized for high computational complexity. In this study, we introduce a new non- dominated sorting algorithm based on Pareto optimal solutions which alleviates the problem of high computational complexity in NSGA-II. We use the Arena Principle in NSGA-II to retain the non-dominated solutions found during the evolutionary process. The main goal of this work is to keep the fast convergence exhibited by Arena Principle in global optimization when extending this heuristic to multi-objective optimization. The algorithm’s computational complexity is O(rmN). We adopt two standard test functions and simulation results show that the Arena Principle is able to find more useful and better spread of solutions.
Literacy, Ethnicity and Style  [PDF]
Maria Sílvia Cintra
Advances in Anthropology (AA) , 2013, DOI: 10.4236/aa.2013.34A002

I present the result of a two-year research project developed at the “Instituto de Estudos de Linguagem” (IEL/Unicamp, Brazil) and also of action research I have been organizing since 2006 when I started to work as a professor at the “Universidade Federal de Sao Carlos”, in Brazil. Relying on recent developments in New Literacy Studies, I explore the concept of the continuum illiterate-literate and argue that it implies elements of transformation, as well as conservation. I also argue that three intersecting continua must be considered together: the continua oral-written, rural-urban and restricted-full literacy, always taking into consideration ethnicity as a variable (Cohen, 1974). Drawing on ethnographic fieldwork in Brazil, I show how elements of restricted literacy (Goody, 1968) are presented on the threshold of the twenty first century; how they entertain relation with the rural to urban migration and with a marked contrast between different ethnicities; and in what sense this fact may be visible in the everyday use of language and in the style inherent in it.

Template do programa Arena para simula??o das opera??es de carregamento e transporte em minas a céu aberto
Ramos Neto, Augusto Nogueira;Pinto, Luiz Ricardo;
Rem: Revista Escola de Minas , 2004, DOI: 10.1590/S0370-44672004000100012
Abstract: this article describes a group of blocks of template mining 1.0, developed to be used with arena system. the objective is to improve modeling and simulation of open pit mining operations. the blocks represent the essential activities of open pit mining, like loading, unloading, loaded and unloaded haulage and equipment maintenance. the dynamic allocation system of trucks, nowadays used in the mining companies can also be represented. the template has a friendly interface and it has been tested with real data. these tests have produced satisfactory results, which are similar to other simulation system.
Sand as thermoluminescent dosimeter to therapeutic doses Arena como dosímetro termoluminiscente para dosis terapéuticas
Daniel Ricaurte,Juana Salcedo,Rafael Cogollo
Ingeniería y Ciencia , 2010,
Abstract: This work describes the characteristic thermoluminiscent of sand coming from Cove as beaches, for its use as therapeutic dose dosimeter. The selected samples, annealed at 400oC during 1 hour, were irradiated to different doses using an unit of 60Co Theratron 780C in air to ambient temperature. The reading was carried out in a Harshaw TLD 4500. The main dosimetric properties of the material (glow curve, response reproducibility, reutilization, linearity and thermal decay) have been studied in detail. The glow curve of the sand samples presents a peaks TL at about 145 C. The results show that the material has a linear response to the dose from 50 cGy until 1000 cGy. The studied sand samples can be used as thermoluminescent dosimeters for applications in different areas. The importance of this work is that the sand is a natural substance available in large quantities, low cost and can be used in clinical physics to evaluate the dose received by the patient during medical treatment. Este trabajo describe las características termoluminiscentes de arena proveniente de las playas de Cove as para su uso como dosímetro en dosis terapéuticas. Las muestras seleccionadas, tratadas térmicamente a 400 C por una hora, fueron irradiadas a diferentes dosis usando una unidad de 60Co Theratron 780C en aire a temperatura ambiente. La lectura se realizó en un Harshaw TLD 4500. Las principales propiedades dosimétricas del material (curva de brillo, reproducibilidad de la respuesta, reutilización, linealidad y decaimiento térmico) han sido estudiadas en detalle. La curva de brillo de las muestras de arena presenta un pico TL alrededor de los 145 C. Los resultados muestran que el material tiene una respuesta lineal con la dosis desde 50 cGy hasta 1000 cGy. Las muestras de arena estudiadas se pueden utilizar como dos′ metros termoluminiscentes para aplicaciones en diferentes áreas. La importancia de este trabajo radica en que la arena es una sustancia natural disponible en grandes cantidades, tiene bajo costo y puede usarse en física clínica para evaluar la dosis recibida por el paciente durante el tratamiento médico.
Educadores em disputa: Sindicato dos Trabalhadores em Educa o Pública do Paraná em Irati/PR (1998-2002)
José Jailton Camargo,Rosemeri Moreira
Revista Tempo, Espa?o e Linguagem , 2010,
Abstract: The article discusses the process of implanting the regional office of the public education workers’ syndicate (APP-Sindicato dos Trabalhadores em Educa o Pública) in the city of Irati, Paraná. The objective was to perceive the process in its historical and political implications within the education-working class. The time range is based on the syndicate foundation in 1988 and the effective opening of the Irati regional headquarters in 2002. Interviews and printed materials have been used, such as logs, newsletters, and pamphlets produced by the entity.
Multiobjective Social Evolutionary Algorithm Based on Multi-Agent

PAN Xiao-Ying,LIU Fang,JIAO Li-Cheng,

软件学报 , 2009,
Abstract: In this paper, a multi-agent social evolutionary algorithm is proposed for multiobjective optimization problems. It completes the search process by the agent evolution. MOMASEA (multi-agent social evolutionary algorithm for multiobjective) defines the trust degree to denote the historical information of agents, and the neighborhood of agent is confirmed by it. According to the characteristic of multiobjective problems, three evolutionary operators are designed to complete the whole evolutionary process. The experimental results show that MOMASEA has a good convergence to the Pareto set. Furthermore, the analysis of the mode for instructs local environment verified that importing acquaintance net model can speed up the convergence effectively.
A Simple Mathematical Formulation of the Correspondence Principle  [PDF]
J. Bernal, A. Martín-Ruiz, J. C. García-Melgarejo
Journal of Modern Physics (JMP) , 2013, DOI: 10.4236/jmp.2013.41017

In this paper we suggest a simple mathematical procedure to derive the classical probability density of quantum systems via Bohr’s correspondence principle. Using Fourier expansions for the classical and quantum distributions, we assume that the Fourier coefficients coincide for the case of large quantum number. We illustrate the procedure by analyzing the classical limit for the quantum harmonic oscillator and the particle in a box, although the method is quite general. We find, in an analytical fashion, the classical distribution arising from the quantum one as the zeroth order term in an expansion in powers of Planck’s constant. We interpret the correction terms as residual quantum effects at the microscopic-macroscopic boundary.

A Study on Quark-Gluon Plasma Equation of State Using Generalized Uncertainty Principle  [PDF]
Nabil M. El Naggar, Lotfy I. Abou-Salem, Ibrahim A. Elmashad, Ahmed Farag Ali
Journal of Modern Physics (JMP) , 2013, DOI: 10.4236/jmp.2013.44A003

The effects of Generalized Uncertainty Principle, which has been predicted by various theories of quantum gravity replacing the Heisenbergs uncertainty principle near the Planck scale, on the thermodynamics of ideal Quark-Gluon Plasma (QGP) consisting of two and three flavors are included. There is a clear effect on thermodynamical quantities like the pressure and the energy density which means that a different effect from quantum gravity may be used in enhancement the theoretical results for Quark-Gluon Plasma state of matter. This effect looks like the technique used in lattice QCD simulation. We determine the value of the bag parameter from fitting lattice QCD data and a physical interpretation to the negative bag pressure is introduced.

A ciência odontológica, Sísifo e o "efeito camale?o"
Emmerich, Adauto;Castiel, Luis David;
Interface - Comunica??o, Saúde, Educa??o , 2009, DOI: 10.1590/S1414-32832009000200008
Abstract: dentistry science is not separated from the social context with which it is connected. the authors describe dentistry science in the way it happens in the dental surgeons' educational process, examining the role of scientific knowledge and also the relations between this knowledge and the practice of its main actors in the division between public and private. in the transition period between academic education and the job market, the authors try to understand the reasons why knowledge is produced and transformed by the mimesis of the various dentistry roles given by the "chameleon effect". it is concluded that, in this transepistemic arena, controversy is normal, and the interest in its destiny is in our hands. the authors attempt to examine the matters of interest for dentistry and the society in a realistic way. if, when we are explaining these matters, we can apply them, perhaps we can overcome the "chameleon effect".
Pinzón,Jorge H.; Perdomo,Adriana M.; Díaz,Juan M.;
Boletín de Investigaciones Marinas y Costeras - INVEMAR , 1998,
Abstract: the morphology, composition and structure of the coral community developed around isla arena, a tiny shingle cay located on the central area of the caribbean continental shelf of colombia, are described. based on aerial photographs from the area and field surveys, maps of bottom relief, habitat units according to substrate type and cover of dominating sessile biota, wave exposure, and patterns of wave dispersion and refraction were drawn. employing an underwater videocamera, 10 m-long transects chain were recorded and analized using the plotless method in order to characterize the sessile community structure. a total of 33 species compose the benthic community. of these, 14 species are stony corals, 5 zoanthids, 1 octocoral, 1 anemone, 10 are macroalgae and 2 sea grasses. ten ecological zones were identified, each of them dominated by one or more species. the spatial distribution pattern of the zones is mainly controlled by substrate and wave energy. the few coral species found seemed to be particularly adapted to meet the prevailing sub-optimal conditions (high water turbidity and turbulence). furthermore, their healthy condition suggests that scleractinians growing under chronic stress may also to cope with infestation by common coral diseases when they are continuously subjected to natural stress.
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