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Search Results: 1 - 10 of 176203 matches for " Luis Castillo F "
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Modelo y desarrollo de W-planner: sistema multiagente on-line aplicado al turismo electrónico Modelo y desarrollo de W-planner: sistema multiagente on-line aplicado al turismo electrónico
Luis F. Castillo,J. F. Corchado,Manuel Bedia
Ingeniería y Ciencia , 2005,
Abstract: This paper introduces the “tourist problem” and presents an Multi-agent system based solution for it. A set of agents that uses a case-based reasoning system to identify actions and plans is capable of determining the most suitable itinerary with restrictions for a tourist. Wireless devises are used by the tourists to interact with the agent. Variational Calculus is used during the reasoning process to identify the set of posible problem solutions and Jacobi elds to nd the most replanning-able solution. This analytical method facilitates the identi cation of a tourist itinerary in advance and is also capable of modifying the tourist route in execution time. To conclude, a case of typical use is shown, in which a tourist requests to the W-planner the most appropriate route that ts in well with the requirements. Este trabajo introduce el llamado problema del turista y presenta una solución basada en un sistema multiagente. Un grupo de agentes que usan un sistema para identificar acciones y planes es capaz de encontrar el itinerario más adecuado para un turista de acuerdo con ciertas restricciones. Los artefactos sin hilos se usan para que el turista interactúe con el agente. Se utilizan técnicas de cálculo variacional durante el proceso para identificar el conjunto de soluciones posibles del problema y técnicas de campos de Jacobi para encontrar la solución más fácilmente replanificable . Este método analítico facilita la identificación de un itinerario turístico previamente y es capaz de modificar la ruta propuesta en tiempo de ejecución. Para finalizar se muestra el seguimiento de un caso de uso típico, en el cual un turista solicita al W-planner bajo ciertas condiciones la ruta más ajustada a sus requerimientos.
Categorización de usuarios: una herramienta para evaluar las cargas de trabajo de enfermería
García G,M Angélica; Castillo F,Luis;
Revista médica de Chile , 2000, DOI: 10.4067/S0034-98872000000200007
Abstract: background: client categorization is a management tool that allows an objective and structured assessment of the care demands imposed by patients and nursing workloads. aim: to characterize the need for direct nursing care of patients admitted to a university hospital. patients and methods: during two months, all patients admitted to intensive, intermediate care units and general services were categorized, their need for nursing care and the time invested by nurses in their care was registered. all patients were classified as maximal, high, median or low risk and as independent, totally or partially dependent on nursing care. considering four degrees of risk and three degrees of dependency, 12 categories of patients were defined. results: patients admitted to intensive care units were of maximal risk and totally dependent and required 1 nurse per 2.2 patients. those admitted in intermediate care units required 1 nurse per 3.8 patients and those in general services, 1 nurse per 11.5 patients. conclusions: client categorization is a reproducible method that determines a standard measuring unit to define nursing needs. this allows the comparison of workloads between different services within a hospital or between hospitals
Categorización de usuarios: una herramienta para evaluar las cargas de trabajo de enfermería Client categorization: A tool to assess nursing workloads
M Angélica García G,Luis Castillo F
Revista médica de Chile , 2000,
Abstract: Background: Client categorization is a management tool that allows an objective and structured assessment of the care demands imposed by patients and nursing workloads. Aim: To characterize the need for direct nursing care of patients admitted to a university hospital. Patients and methods: During two months, all patients admitted to intensive, intermediate care units and general services were categorized, their need for nursing care and the time invested by nurses in their care was registered. All patients were classified as maximal, high, median or low risk and as independent, totally or partially dependent on nursing care. Considering four degrees of risk and three degrees of dependency, 12 categories of patients were defined. Results: Patients admitted to intensive care units were of maximal risk and totally dependent and required 1 nurse per 2.2 patients. Those admitted in intermediate care units required 1 nurse per 3.8 patients and those in general services, 1 nurse per 11.5 patients. Conclusions: Client categorization is a reproducible method that determines a standard measuring unit to define nursing needs. This allows the comparison of workloads between different services within a hospital or between hospitals
SICODI, una propuesta de sistema para la gestión de información de reuniones y su empleo en la Unión CubaPetróleo
Bonell Rosabal,Sheyla; Martínez Castillo,Aliett; Quintana Santiesteban,Luis Angel; Fírvida Martínez,Yeny;
ACIMED , 2011,
Abstract: this is a paper carried out in the development of information systems of the management organs (sicodi) of the cubapetroleo union, being necessary to propose the following objectives: to diagnose the current status of the information management from meetings of such organs, to made an analysis and a design of the system assuring the access, updating and safety of information and to observe the results of it implantation. authors used the theoretical methods of analysis and synthesis and the inductive-deductive to analyze the flow of current work of management organs of the central office of cupet, as well as interviews to staff involved in management process from meetings of management organs and the use of procedures of development of software of the group of information system of the above mentioned central office. in the development of system authors used a client-supplier structure. implementation of this application was novel taking into account the contribution to information management referring to meeting of management organs and other from the central office of cupet, since there was not another known in the national market with a similar provision. the carrying out of system is a significant saving for the entity, considering the high prices of tools available in market for the information management from meetings.
EVALUACIóN LAPAROSCóPICA DE HERNIA INGUINAL CONTRALATERAL EN NI?OS: ?ESTá JUSTIFICADA SU EXPLORACIóN?
CASTILLO F.,ANA MARíA; RINCóN L.,LUIS CARLOS; LUENGAS,JUAN PABLO;
Revista Med , 2009,
Abstract: the high incidence of a contralateral patent processus vaginalis has led to the development of new laparoscopic techniques which have revived the controversy around the contralateral exploration. with this project we evaluate the usefulness of laparoscopy in the diagnosis of contralateral inguinal hernia. it was performed in children between 0 and 15 years in the pediatric surgery service of the central military hospital in the period between may 2005 and august 2008, through an observational, analytical, prospective cohort study. the study allowed us to determine through laparoscopy, which patients had contralateral inguinal hernia, making the correction in the same surgical time, avoiding the possibility of a complicated metachronous contralateral hernia, a new anesthetic risk and the cost of a second hospitalization; similarly these results were confonted with global statistics.
Cáncer de cuello uterino
Dávila Gómez,Heenry Luis; García Valdés,Abel; álvarez Castillo,Félix;
Revista Cubana de Obstetricia y Ginecolog?-a , 2010,
Abstract: a retrospective and descriptive study was conducted to characterize the behavior of cervix cancer in a sample of 162 patients with this diagnosis during 2003-2009 in the isla de la juventud municipality. from the review of case reports from the national unit of cancer the individual medical records of teaching general hospital of this municipality and from the national institute of oncology and radiology, as well as the deceased persons, it was possible to note that the 63% of cases were women aged 34-57 and that the 20% was in ages outside the screening program. the nic and/or infection by hpv and smoking were the more frequent risk factors. there was predominance of large cells epidermoid non-keratini zed carcinoma and the o stage or in situ. most of patients were operated on is initial therapy. the great mortality was between fifth and sixth decades of life with a acceptable survival at 5 years.
Trombolisis intraarterial en trombosis de la arteria basilar: Recuperación de dos pacientes con síndrome de enclaustramiento
Mellado T,Patricio; Sandoval R,Patricio; Tevah C,José; Huete L,Isidro; Castillo F,Luis;
Revista médica de Chile , 2004, DOI: 10.4067/S0034-98872004000300012
Abstract: locked-in syndrome is a dramatic clinical condition, the patient is awake, can listen and breath, but is unable to move any muscle, conserving only the vertical eye movements. the most common cause of locked-in syndrome is the thrombosis of the basilar artery and commonly leads to death, frequently due to pneumonia. intravenous and intra arterial thrombolysis have been used successfully in a selective group of patients with ischemic stroke. there is only one report of two patients with locked-in syndrome who were treated successfully with intra arterial thrombolysis. other authors, based in their experiences, do not recommend this treatment. we report two female patients aged 63 and 26 years, with locked-in syndrome due to a basilar thrombosis who were treated successfully with intra arterial thrombolysis using ecombinant tissue plasminogen activator (r-tpa). the lapses between the onset of the symptoms and thrombolysis were 5 and 8 hours respectively. a complete recanalization was obtained in both patients during the thrombolysis. one year after, the first patient has only a moderate ataxia, walking with assistance and the other has a normal neurological examination (rev méd chile 2004; 132: 357-60 ).
A Comparison Between PML, Infinite Elements and an Iterative BEM as Mesh Truncation Methods for Hp Self-Adaptive Procedures in Electromagnetics
Ignacio Gomez-Revuelto;Luis E. Garcia-Castillo;Leszek F Demkowicz
PIER , 2012, DOI: 10.2528/PIER12020201
Abstract: Finite element hp-adaptivity is a technology that allows for very accurate numerical solutions. When applied to open region problems such as radar cross section prediction or antenna analysis, a mesh truncation method needs to be used. This paper compares the following mesh truncation methods in the context of hp-adaptive methods: Infinite Elements, Perfectly Matched Layers and an iterative boundary element based methodology. These methods have been selected because they are exact at the continuous level (a desirable feature required by the extreme accuracy delivered by the hp-adaptive strategy) and they are easy to integrate with the logic of hp-adaptivity. The comparison is mainly based on the number of degrees of freedom needed for each method to achieve a given level of accuracy. Computational times are also included. Two-dimensional examples are used, but the conclusions directly extrapolated to the three dimensional case.
SICODI, una propuesta de sistema para la gestión de información de reuniones y su empleo en la Unión CubaPetróleo SICODI, a system proposal for management of information from meetings and its use en the CubaPetroleo Union
Sheyla Bonell Rosabal,Aliett Martínez Castillo,Luis Angel Quintana Santiesteban,Yeny Fírvida Martínez
ACIMED , 2011,
Abstract: Se presenta el trabajo realizado en el desarrollo del Sistema de Información para los órganos de Dirección (SICODI) de la Unión CubaPetróleo, para el que fue necesario plantearse como objetivos: diagnosticar el estado actual de la gestión de la información de la reuniones de dichos órganos, realizar el análisis y el dise o del sistema que garantizara el acceso, la actualización y la seguridad de la información y observar los resultados de su implantación. Se utilizaron los métodos teóricos de análisis y síntesis y el inductivo-deductivo con el fin de analizar el flujo de trabajo actual de los órganos de dirección de la Oficina Central de CUPET. Se realizaron entrevistas a las personas implicadas en el proceso de gestión de reuniones de los órganos de dirección y se utilizó el procedimiento de desarrollo de software del grupo de Sistemas de Información de la Oficina Central de CUPET. En el desarrollo del sistema fue utilizada una arquitectura Cliente-Servidor. Se empleó el lenguaje de programación C# y el Gestor de Base de Datos MS SQL Server. La implementación de esta aplicación resultó novedosa teniendo en cuenta el aporte a la gestión de información referente a las reuniones de los órganos de dirección y otras de la Oficina Central de CUPET, ya que no se conocía de otra en el mercado nacional con similares prestaciones. La realización del sistema constituye un ahorro significativo para la entidad, teniendo en cuenta los altos precios de las herramientas disponibles en el mercado para la gestión de información de reuniones. This is a paper carried out in the development of Information Systems of the Management Organs (SICODI) of the CubaPetroleo Union, being necessary to propose the following objectives: to diagnose the current status of the information management from meetings of such organs, to made an analysis and a design of the system assuring the access, updating and safety of information and to observe the results of it implantation. Authors used the theoretical methods of analysis and synthesis and the inductive-deductive to analyze the flow of current work of management organs of the Central Office of CUPET, as well as interviews to staff involved in management process from meetings of management organs and the use of procedures of development of software of the group of Information System of the above mentioned central office. In the development of system authors used a client-supplier structure. Implementation of this application was novel taking into account the contribution to information management referring to meeting of management organ
Linfadenectomía lumboaórtica asistida por robot en tumor residual postquimioterapia en cáncer testicular Robotic-assisted laparoscopic retroperitoneal lymph node dissection in post chemotherapy residual mass in testis cancer
OCTAVIO A CASTILLO C,FRANCISCO SEPúLVEDA T,LUIS F SUSANIBAR N,IVAR VIDAL M
Revista Chilena de Cirugía , 2011,
Abstract: Introducción: La linfadenectomía retroperitoneal lumboaórtica laparoscópica (LRLA-L) ha demostrado resultados al menos comparables a la cirugía abierta en términos de complicaciones peri operatorias y resultados oncológicos. Sin embargo, su aplicación en el escenario postquimioterapia es todavía materia de estudio. El desarrollo de la cirugía robótica y sus ventajas sobre la cirugía laparoscópica hacen de este tipo de cirugía una opción atractiva para procedimientos más complejos como esta intervención postquimioterapia. Reportamos nuestra experiencia inicial en Linfadenectomía lumboaórtica laparoscópica robóticamente asistida postquimioterapia. Métodos: Describimos el caso de dos pacientes sometidos a una a una linfadenectomía retroperitoneal lumboaórtica asistida por robot (LRLA-R), portadores de una masa retroperitoneal postquimioterapia secundaria a un carcinoma testicular de células germinales no seminoma. Resultados: Dos pacientes, de 27 y 30 a os de edad, con una masa retroperitoneal residual después de 4 y 6 ciclos de Bleomicina, Etoposido y Cis-Platinum respectivamente. El primer paciente presentó una masa para-aórtica izquierda de 4,3 cm y el segundo paciente una masa en relación a la tercera porción del duodeno de 6 cm. El tiempo operatorio promedio fue de 255 minutos (210-300) con un sangrado promedio estimado de 450 ml (100-800). El tiempo promedio de hospitalización fue de 60 hrs (48-72). En ambos casos el resultado histológico evidenció la presencia de Teratoma. No se presentaron complicaciones perioperatorias. Conclusiones: Creemos que la LRLA-R en pacientes con masa residual post-quimioterapia es una técnica reproducible y segura en pacientes seleccionados, sin embargo, todavía es necesario un mayor número de pacientes y tiempos de seguimiento para poder evaluar los resultados oncológicos. Introduction: The laparoscopic retroperitoneal lymph node dissection (L-RPLND) has shown results at least comparable to open surgery in terms of perioperative complications and oncological results, but its application in the post chemotherapy scenario is still matter of study. The development of robotic surgery and its advantages over laparoscopic surgery, make this an attractive option for complex procedures. We report our initial experience with robotic-assisted retroperitoneal lymph node dissection (R-RPLND). Methods: We describe the cases of two patients who underwent R-RPLND due to a Post Chemotherapy residual mass of a non-seminomatous testicular cancer. Results: Two patients, 27 and 30 years old, presented with retroperitoneal residual mass aft
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