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EFECTO DE UN PROGRAMA DE EJERCICIO AERóBICO Y UN PROGRAMA DE CIRCUITO CON PESAS SOBRE LA CALIDAD DE VIDA, DISNEA Y RESISTENCIA CARDIORRESPIRATORIA EN SUJETOS CON ENFERMEDAD PULMONAR CRóNICA
Delgado Acosta Henry,Acu?a Corrales Ernesto
Revista en Ciencias del Movimiento Humano y Salud , 2007,
Abstract: El objetivo de este estudio fue determinar el efecto de un programa de ejercicio aeróbico y un programa de circuito con pesas sobre la calidad de vida, disnea y resistencia cardiorrespiratoria en sujetos con Enfermedad Pulmonar Crónica (EPC). Metodología: el programa de rehabilitación se hizo durante ocho semanas, se realizó un pretest y un postest, se cumplió con una sesión semanal presencial, y las otras dos domiciliarias, se tuvo comunicación directa vía telefónica los días que realizaban el ejercicio en la casa. Instrumentos: el cuestionario St. George Respiratory Questonnaire para medir calidad de vida, la escala de Borg para medir la disnea y el test de caminata de los 6 min. para medir la resistencia cardiorrespiratoria. Sujetos: participaron 38 personas con diagnóstico previo de EPC, 18 hombres y 20 mujeres; 27 sujetos con patología obstructiva y 11 sujetos con restrictiva., con una edad promedio de 69.8 ± 9.34 a os, divididos aleatoriamente en dos grupos, uno que realizó ejercicio aeróbico (22 sujetos) y otro que ejecutó ejercicio aeróbico y de contrarresistencia con pesas (16 sujetos). Análisis estadístico: ANOVA mixta de cuatro vías (2x2x2x2) para las variables mediciones, sexo, tratamiento y patología. Resultados: se encontraron diferencias significativas entre mediciones para la variable disnea (pre: 7.18 ± 0.69 puntos y post: 4.89 ± 0.68 puntos) (F = 228.770; p < 0,05), calidad de vida (pre: 59.68 ± 7.50 puntos y post 81.75 ± 7.33 puntos) (F = 228.770; p < 0,05), resistencia cardiorrespiratoria (pre 384,95 ± 51,02 mts. y post 432 ± 37,41 mts.) (F: 59.9; p<0.01), pero no se encontraron diferencias por sexo, actividad ni enfermedad (p>0,05), ni interacción entre las variable (p>0,05). Conclusión: la realización de ejercicio físico aeróbico y anaeróbico mejoran el grado de disnea, la calidad de vida y resistencia cardiorrespiratoria en pacientes con EPC.
An Agent-Based Assessment of Land Use and Ecosystem Changes in Traditional Agricultural Landscape of Portugal  [PDF]
Lilibeth A. Acosta, Mark D. A. Rounsevell, Martha Bakker, Ann Van Doorn, Montserrat Gómez-Delgado, Marc Delgado
Intelligent Information Management (IIM) , 2014, DOI: 10.4236/iim.2014.62008
Abstract:

This paper presents an assessment of land use changes and their impacts on the ecosystem in the Montado, a traditional agricultural landscape of Portugal in response to global environmental change. The assessment uses an agent-based model (ABM) of the adaptive decisions of farmers to simulate the influence on future land use patterns of socio-economic attributes such as social relationships and farmer reliance on subsidies and biophysical constraints. The application and development of the ABM are supported empirically using three categories of input data: 1) farmer types based on a cluster analysis of socio-economic attributes; 2) agricultural suitability based on regression analysis of historical land use maps and biophysical attributes; and 3) future trends in the economic and climatic environments based on the A1fi scenario of the Intergovernmental Panel on Climate Change. Model sensitivity and uncertainty analyses are carried out prior to the scenario analysis in order to verify the absence of systematic errors in the model structure. The results of the scenario analysis show that the area of Montado declines significantly by 2050, but it remains the dominant land use in the case study area, indicating some resilience to change. An important policy challenge arising from this assessment is how to encourage next generation of innovative farmers to conserve this traditional landscape for social and ecological values.

Sistema informático para la gestión de los planes de ingreso a la educación media y superior en Cuba
Luis Ernesto Acosta Ortíz,Daylenis Sánchez Delgado
Revista Cubana de Ciencias Informáticas , 2012,
Abstract: El objetivo del trabajo es presentar un sistema de gestión de los planes de ingreso a la educación media y superior en Cuba, el cual automatiza los procesos de recopilación de información, así como los algoritmos de asignación del ingreso que se desarrolla en el Departamento de Fuerza de Trabajo Calificada del Ministerio de Trabajo y Seguridad Social. Este departamento se encarga de gestionar los procesos de formación y empleo de la fuerza de trabajo calificada en el país; forma parte del Sistema Unificado de Gestión de Fuerza de Trabajo Calificada (GeForza), iniciado en 2009 en la Universidad de las Ciencias Informáticas (UCI), concebido a partir de la estrategia de actualizar el Estudio Integral para la Formación y Empleo de la Fuerza de Trabajo Calificada en Cuba. Para el desarrollo de la aplicación web se usó el marco de trabajo Sauxe, el lenguaje de programación PHP y la integración de otros marcos de trabajo como Zend Framework, Doctrine y ExtJS. Es una aplicación totalmente funcional que se encuentra en fase de despliegue.
On the feasibility of a channel-dependent scheduling for the SC-FDMA in 3GPP-LTE (mobile environment) based on a prioritized-bifacet Hungarian method
Medina-Acosta Gerardo,Delgado-Penín José
EURASIP Journal on Wireless Communications and Networking , 2011,
Abstract: We propose a methodology based on the prioritization and opportunistic reuse of the optimization algorithm known as Hungarian method for the feasible implementation of a channel-dependent scheduler in the long-term evolution uplink (single carrier frequency division multiple access system). This proposal aims to offer a solution to the third generation system's constraint of allocating only adjacent subcarriers, by providing an optimal resource allotment under a fairness scheme. A multiuser mobile environment following the third generation partnership project TS 45.005v9.3.0/25.943v9.0.0 was also implemented for evaluating the scheduler's performance. From the results, it was possible to examine the channel frequency response for all users (four user equipments) along the whole bandwidth, to visualize the dynamic resource allocation for each of the 10,000 channel realizations considered, to generate the statistical distribution and cumulative distribution functions of the obtained global costs, as well as to evaluate the system's performance once the proposed algorithm was embedded. Comparing and emphasizing the benefits of utilizing the proposed dynamic allotment instead of the classic static-scheduling and other existent methods.
Non-integrability of some few body problems in two degrees of freedom
Primitivo Acosta-Humanez,Martha Alvarez-Ramirez,Joaquin Delgado
Physics , 2008,
Abstract: The basic theory of Differential Galois and in particular Morales--Ramis theory is reviewed with focus in analyzing the non--integrability of various problems of few bodies in Celestial Mechanics. The main theoretical tools are: Morales--Ramis theorem, the algebrization method of Acosta--Bl\'azquez and Kovacic's algorithm. Morales--Ramis states that if Hamiltonian system has an additional meromorphic integral in involution in a neighborhood of a specific solution, then the differential Galois group of the normal variational equations is abelian. The algebrization method permits under general conditions to recast the variational equation in a form suitable for its analysis by means of Kovacic's algorithm. We apply these tools to various examples of few body problems in Celestial Mechanics: (a) the elliptic restricted three body in the plane with collision of the primaries; (b) a general Hamiltonian system of two degrees of freedom with homogeneous potential of degree -1; here we perform McGehee's blow up and obtain the normal variational equation in the form of an hypergeometric equation. We recover Yoshida's criterion for non--integrability. Then we contrast two methods to compute the Galois group: the well known, based in the Schwartz--Kimura table, and the lesser based in Kovacic's algorithm. We apply these methodology to three problems: the rectangular four body problem, the anisotropic Kepler problem and two uncoupled Kepler problems in the line; the last two depend on a mass parameter, but while in the anisotropic problem it is integrable for only two values of the parameter, the two uncoupled Kepler problems is completely integrable for all values of the masses.
Bosonic and fermionic Weinberg-Joos (j,0)+ (0,j) states of arbitrary spins as Lorentz-tensors or tensor-spinors and second order theory
E. G. Delgado Acosta,V. M. Banda Guzman,M. Kirchbach
Physics , 2015, DOI: 10.1140/epja/i2015-15035-x
Abstract: We propose a general method for the description of arbitrary single spin-j states transforming according to (j,0)+(0,j) carrier spaces of the Lorentz algebra in terms of Lorentz-tensors for bosons, and tensor-spinors for fermions, and by means of second order Lagrangians. The method allows to avoid the cumbersome matrix calculus and higher \partial^{2j} order wave equations inherent to the Weinberg-Joos approach. We start with reducible Lorentz-tensor (tensor-spinor) representation spaces hosting one sole (j,0)+(0,j) irreducible sector and design there a representation reduction algorithm based on one of the Casimir invariants of the Lorentz algebra. This algorithm allows us to separate neatly the pure spin-j sector of interest from the rest, while preserving the separate Lorentz- and Dirac indexes. However, the Lorentz invariants are momentum independent and do not provide wave equations. Genuine wave equations are obtained by conditioning the Lorentz-tensors under consideration to satisfy the Klein-Gordon equation. In so doing, one always ends up with wave equations and associated Lagrangians that are second order in the momenta. Specifically, a spin-3/2 particle transforming as (3/2,0)+ (0,3/2) is comfortably described by a second order Lagrangian in the basis of the totally antisymmetric Lorentz tensor-spinor of second rank, \Psi_[ \mu\nu]. Moreover, the particle is shown to propagate causally within an electromagnetic background. In our study of (3/2,0)+(0,3/2) as part of \Psi_[\mu\nu] we reproduce the electromagnetic multipole moments known from the Weinberg-Joos theory. We also find a Compton differential cross section that satisfies unitarity in forward direction. The suggested tensor calculus presents itself very computer friendly with respect to the symbolic software FeynCalc.
Predicción de la estructura secundaria de proteínas usando Máquinas de soporte Vectorial
Delgado Darío José,Arguello Fuentes Henry,Torres Rodrigo Gonzalo
Revista Colombiana de Biotecnología , 2012,
Abstract: Título en ingles: Protein secondary structure prediction using support vector machines Abstract : Among the computational methods used for predicting secondary structure proteins highlights the use of support vector machines. This research shows the predicted secondary structure of protein from its primary amino acid sequence using Support Vector Machines. As inputs, in the proposed methodology, features are used from different structural motifs or text strings associated with the primary structure which represents the secondary structure, such as R-group and the probability that the amino acid at position adopts a central particular secondary structure. For feature extraction method is used coding of sequences in which each symbol in the primary structure is associated with each symbol in the secondary structure. The use of this encoding method reduces the dimensionality of the data of thousands of characteristics only 220 of these. The results obtained are comparable to those reported in the literature, taking about 70% accuracy. Furthermore, it is possible to reduce computational cost in the construction of classifiers because this work models the problem of multi classification as a group of binary classifiers. Key words: coding methodology; support vector machines; prediction of protein secondary structure. Resumen: Entre los métodos computacionales utilizados para la predicción de la estructura secundaria de proteínas, se destaca el uso de máquinas de soporte vectorial. Este trabajo de investigación presenta la predicción de la estructura secundaria de proteínas desde su secuencia primaria de aminoácidos usando Máquinas de Soporte Vectorial. Como entradas, en la metodología propuesta, se utilizan características de los diferentes motivos estructurales o cadenas de texto asociadas a la estructura primaria que representa la estructura secundaria, tales como el R-grupo y la probabilidad de que el aminoácido en la posición central adopte una determinada estructura secundaria. Para la extracción de características se utiliza un método de codificación de secuencias en el que cada símbolo en la estructura primaria se relaciona con cada símbolo en la estructura secundaria. El uso de este método de codificación permite reducir la dimensionalidad de los datos de miles de características a sólo 220 de estas. Los resultados obtenidos son comparables a los registrados en la literatura, teniendo cerca de un 70% de precisión. Además, se logra reducir los costos computacionales en la construcción de los clasificadores debido a que este trabajo modela el probl
Carcinoma de mama en el hombre: A propósito de un caso
Beatriz Delgado,Luis Palacios,Henry Petit,Gonzalo Barrios
Revista Venezolana de Oncología , 2009,
Abstract: El cáncer de mama en el hombre ha sido considerado durante mucho tiempo como una curiosidad médica, siendo la presentación clínica, la patología y la historia natural similares a la mujer, no siendo así el pronóstico. En el presente trabajo se analiza el comportamiento clínicohistológico de ocho hombres con diagnóstico de cáncer de mama en el Hospital Oncológico “Padre Machado”, atendidos entre 1995 y 2006. El 75 % de los pacientes se diagnosticó en estadio II y III. Un paciente en estadio IIIb tenía 23 a os y está libre de enfermedad. El 66 % de los pacientes presentaron receptores de estrógenos positivos. Se discuten los resultados y se revisa la literatura. The cancer of breast in the man has been considered during long time like a medical curiosity, being the clinical presentation, the pathology and natural history similar to the woman, not being therefore the prognosis. In the present work the clinical-histological behavior of eight men with diagnosis of cancer of breast in the Hospital Oncologico “Padre Machado” is analyzed, taken care of between 1995 and 2006. 75 % of the patient’s diagnoses were in stage II and III. A patient in IIIb stage with 23 years old and he is free one of disease. 66 % of the patients presented positive estrogens receivers. The results are discussed and literature is reviewed.
Educational Preparation of Older Adults and Their Families for Retirement  [PDF]
María de los ángeles Aguilera, José de Jesús Pérez, Diemen Delgado, Mónica Contreras, Martín Acosta, Blanca Elizabeth Pozos
Advances in Applied Sociology (AASoci) , 2013, DOI: 10.4236/aasoci.2013.36032
Abstract:

The purpose of this qualitative case study, carried out in two phases, is to systematize the learning experiences and expectations of older adults and their families as they face approaching retirement, in Guadalajara, Mexico, 2012. The strategy implemented was an educational preparation for retirement. Six adults had already retired, two were soon to be retired and eight family members were chosen for this study. Data were collected using semi-structured interviews and a SQA-E format. The educational strategy was an interactive conference. A phenomenological analysis was made of the experiences recorded. The naturalistic criterial evaluation of learning experiences and expectations was applied before and after the educational intervention. Through this intervention, participants were made conscious of their problems, expressed the desire to improve certain aspects of their lives and continued educational preparation.

La familia y su papel en los problemas de promoción y prevención de salud bucal
Alemán Sánchez,Pedro Carlos; González Valdés,Damaris; Delgado Díaz,Yaíma; Acosta Acosta,Estela;
Revista Cubana de Estomatolog?-a , 2007,
Abstract: the family is the basic institution of the society, the reproductive unit that keeps the human species, and thus, it constitutes the element that centered health production at microsocial scale. the family has important functions in the biological, psychological and social development of the individual and has assured, together with other social groups, the socialization and education of the human being for its integration into the social life and the transfer of cultural values from one generation to the other. we may say that the family is an ecological triade, still partly unknown, difficult to be managed by the dentist. the above-mentioned prompted us to make a literature review on the importance of family in the promotion and prevention of general and oral health status and to update knowledge on our country′s situation. it was concluded that the role of the family should be improved in this regard by creating certain health culture that embraces all aspects of life including oral health, in order to better the results in the prevention of diseases and health promotion.
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