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Search Results: 1 - 10 of 217152 matches for " Rogelio; Reyes Pérez "
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Word Sense Disambiguation in Information Retrieval  [PDF]
Francis de la C. Fernández REYES, Exiquio C. Pérez LEYVA, Rogelio Lau FERNáNDEZ
Intelligent Information Management (IIM) , 2009, DOI: 10.4236/iim.2009.12018
Abstract: The natural language processing has a set of phases that evolves from lexical text analysis to the pragmatic one in which the author’s intentions are shown. The ambiguity problem appears in all of these tasks. Previous works tries to do word sense disambiguation, the process of assign a sense to a word inside a specific context, creating algorithms under a supervised or unsupervised approach, which means that those algorithms use or not an external lexical resource. This paper presents an approximated approach that combines not supervised algorithms by the use of a classifiers set, the result will be a learning algorithm based on unsupervised methods for word sense disambiguation process. It begins with an introduction to word sense disambiguation concepts and then analyzes some unsupervised algorithms in order to extract the best of them, and combines them under a supervised approach making use of some classifiers.
Evaluación de la competencia en médicos intensivistas
Pérez Reyes,Rogelio; Otero Ceballo,Marta;
Revista Cubana de Medicina Militar , 2003,
Abstract: a bibliographic review of professional competence was made and concepts of competence, evaluation and conditions to create evaluative tools were analyzed. the different levels of professional performance were described according to miller′s model. reference was made to the newest evaluation test, the objective structured clinical examination, which is one of the most complete methodologies at present, although it is made clear that the evaluation is carried out under a created and simulated situation. it is concluded that the bases for making the evaluative tools that will measure the competence or incompetence of our medical sciences professionals should be structured.
Experiencia de trabajo en la Unidad de Cuidados Intensivos ante las manifestaciones psiquiátricas de la malaria
Pérez Reyes,Rogelio; Otero Ceballos,Marta;
Revista Cubana de Medicina Militar , 2002,
Abstract: a research work was carried out on malaria cerebral affecting internationalist soldiers who were admitted to the intensive care unit of luanda′s general hospital. this work was made in coordination with the psychiatric ward of convalescents of "dr luis galván soca" military hospital. in the sample of 18 cases that had associated psychiatric manifestations, the analyzed variables were: age, length of stay in the people′s republic of angola, personal and familiar pathological history, most frequent symptoms and progression. it was concluded that if there are acute cerebral alterations (blackouts, disorientation, hallucinations, psychomotor agitation, delirious and negative ideas, and neurotic symptoms) in patients with acute malarial episodes, then malaria with psychiatric alterations is present. on this occasion, recovery was favorable without any sequelae. there was good response to combined therapy of antimalarials and psychotropic drugs.
Experiencia de trabajo en la Unidad de Cuidados Intensivos ante las manifestaciones psiquiátricas de la malaria
Rogelio Pérez Reyes,Marta Otero Ceballos
Revista Cubana de Medicina Militar , 2002,
Abstract: Se realizó una investigación sobre el paludismo cerebral en los combatientes internacionalistas que ingresaron en la Unidad de Cuidados Intensivos del Hospital General de Luanda en coordinación con la Sala de Psiquiatría de Convalecientes del Hospital Militar "Dr. Luis Galván Soca". En la muestra seleccionada de 18 casos que tenían asociadas manifestaciones psiquiátricas, las variables analizadas fueron: edad, tiempo de estancia en la República Popular de Angola, antecedentes patológicos personales y familiares, síntomas más frecuentes y evolución. Se concluye que si existen alteraciones cerebrales agudas (toma de conciencia, desorientación, alucinaciones, agitación psicomotriz, ideas delirantes, negativas y síntomas neuróticos) en los pacientes con episodios agudos palúdicos, está presente la enfermedad de la malaria con alteraciones psiquiátricas. En esta experiencia, la evolución fue favorable sin dejar secuelas. Hubo buena respuesta ante la combinación del medicamento antipalúdico y psicofármacos. A research work was carried out on malaria cerebral affecting internationalist soldiers who were admitted to the Intensive Care Unit of Luanda′s General Hospital. This work was made in coordination with the psychiatric ward of convalescents of "Dr Luis Galván Soca" Military Hospital. In the sample of 18 cases that had associated psychiatric manifestations, the analyzed variables were: age, length of stay in the People′s Republic of Angola, personal and familiar pathological history, most frequent symptoms and progression. It was concluded that if there are acute cerebral alterations (blackouts, disorientation, hallucinations, psychomotor agitation, delirious and negative ideas, and neurotic symptoms) in patients with acute malarial episodes, then malaria with psychiatric alterations is present. On this occasion, recovery was favorable without any sequelae. There was good response to combined therapy of antimalarials and psychotropic drugs.
Evaluación de la competencia en médicos intensivistas
Rogelio Pérez Reyes,Marta Otero Ceballo
Revista Cubana de Medicina Militar , 2003,
Abstract: Se realizó una revisión bibliografía sobre la competencia profesional, que analizó los conceptos de competencia, evaluación y condiciones para crear instrumentos evaluativos. Se describieron los diferentes niveles de actuación profesional según el modelo de Miller. Se hizo mención a la prueba de evaluación más novedosa, el examen clínico objetivo estructurado, que es una de las metodologías más completas de las que se dispone en la actualidad, aunque no deja de se alarse que la evaluación se realiza en una situación creada y simulada. Se concluye que deben estructurarse las bases para la confección de los instrumentos evaluativos, los que medirán el grado de competente o incompetente de nuestros profesionales en ciencias médicas. A bibliographic review of professional competence was made and concepts of competence, evaluation and conditions to create evaluative tools were analyzed. The different levels of professional performance were described according to Miller′s model. Reference was made to the newest evaluation test, the objective structured clinical examination, which is one of the most complete methodologies at present, although it is made clear that the evaluation is carried out under a created and simulated situation. It is concluded that the bases for making the evaluative tools that will measure the competence or incompetence of our medical sciences professionals should be structured.
Selección de los 12 medicamentos más utilizados en los servicios de urgencia y cuidados intensivos
Pérez Reyes,Rogelio; Gil Manrique,Lazaro F.;
Revista Cubana de Medicina Militar , 2001,
Abstract: an updated literature review was made in which the most used drugs in emergency and intensive care services were selected to provide a quicker and sager tool in the face of arithmetic calculations which are commonly imposed to reach adequate rhythm and dosage. twelve drugs are listed, they are alphabetically organized by generic and commercial names so as to find them easily. these drugs are adrenaline, aminophyline, diazepam, dobutamine, dopamine, phenytoin, lidocaine, metylprednisolone, nitroglycerine, nitroprusside, salbutamol and timetaphan.
Semi-fragile watermarking based content image authentication scheme
Cruz,Clara; Reyes,Rogelio; Nakano,Mariko; Pérez,Héctor;
Revista Facultad de Ingeniería Universidad de Antioquia , 2010,
Abstract: this paper presents a block-wise semi-fragile watermarking scheme for image content authentication, with tamper area localization and recovery capability. before the watermark sequence is generated, the original image is divided into two regions: the region of interest (roi) and the region of embedding (roe), where the roi is selected manually by the owner of the image and the roe is rest of the whole image after subtracting region belonging to the roi. the binary watermark of each roi block is generated by the dc and the 6 lowest ac components in the zig-zag order of the dct coefficients of these blocks. these extracted bit sequence are embedded into the lsb of the dct coefficients of the corresponding roe blocks which are indicated by a mapping list previously generated using a secret key. in the authentication process, the watermark sequence is extracted from the roi blocks. then it compared with the sequence extracted from the corresponding roe blocks to determine if the roi block has been altered; in this case the tampered roi blocks are recovered replacing them by the extracted watermark sequence from roe. simulation results show that the reconstructed image quality and the watermark robustness to jpeg compression are better than the previously reported methods by other authors under the same conditions.
Selección de los 12 medicamentos más utilizados en los servicios de urgencia y cuidados intensivos Screening of the twelve most used drugs in emergency and intensive care services
Rogelio Pérez Reyes,Lazaro F. Gil Manrique
Revista Cubana de Medicina Militar , 2001,
Abstract: Se hace una revisión bibliográfica actualizada de donde se seleccionan los medicamentos más utilizados en los servicios de urgencia y cuidados intensivos, con el fin de ofrecer una herramienta más rápida y segura ante cálculos aritméticos que se imponen con frecuencia, para alcanzar el ritmo y dosis adecuada. El listado cuenta con 12 medicamentos; para hacer más fácil su búsqueda se organizaron por orden alfabético según los nombres genérico y comercial. Ellos son adrenalina, aminofilina, diazepan, dobutamina, dopamina, fenitoína, lidocaína, metilprednisolona, nitroglicerina, nitroprusiato, salbutamol y timetafán An updated literature review was made in which the most used drugs in emergency and intensive care services were selected to provide a quicker and sager tool in the face of arithmetic calculations which are commonly imposed to reach adequate rhythm and dosage. Twelve drugs are listed, they are alphabetically organized by generic and commercial names so as to find them easily. These drugs are adrenaline, aminophyline, diazepam, dobutamine, dopamine, phenytoin, lidocaine, metylprednisolone, nitroglycerine, nitroprusside, salbutamol and timetaphan.
Planificación estratégica en el marco del proyecto de intervención para el perfeccionamiento del trabajo de la cátedra Universidad Virtual Fajardo
Hechavarría Toledo,Suiberto; Pérez Perea,Lizette; Pérez Reyes,Rogelio; Ramírez Díaz,Viviam;
Educaci?3n M??dica Superior , 2007,
Abstract: results of strategic planning exercise, performed within the framework of intervention project for development of work of virtual university cathedra in “manuel fajardo” medical sciences faculty were showed.
Planificación estratégica en el marco del proyecto de intervención para el perfeccionamiento del trabajo de la cátedra Universidad Virtual Fajardo Strategic planning within the framework of intervention project for improvement of work in Fajardo Virtual University cathedra
Suiberto Hechavarría Toledo,Lizette Pérez Perea,Rogelio Pérez Reyes,Viviam Ramírez Díaz
Educaci?3n M??dica Superior , 2007,
Abstract: Se expusieron los resultados del ejercicio de planificación estratégica realizado en el marco del proyecto de intervención para el desarrollo del trabajo de la cátedra Universidad Virtual de la Facultad de Ciencias Médicas “Comandante Manuel Fajardo”. Results of strategic planning exercise, performed within the framework of intervention project for development of work of Virtual University cathedra in “Manuel Fajardo” Medical Sciences Faculty were showed.
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