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Search Results: 1 - 10 of 206679 matches for " Marisol; Mu?oz Guzmán "
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Conflictividades urbanas vs. ?guerra? urbana: otra ?clave? para leer el conflicto en Medellín
Blair,Elsa; Grisales Hernández,Marisol; Muoz Guzmán,Ana María;
Universitas Humanística , 2009,
Abstract: the urban conflict in medellin between 1995 and 2002 has been described, fundamentally, as an urban war that can be explained based on the armed political conflict that took place on a national level. the presence of armed actors linked to the autodefensas unidas de colombia (auc) - essentially the "cacique nutibara" block - and the guerilla groups fuerzas armadas revolucionarias de colombia farc and ejercito de liberacion nacional eln, allowed many analysts to explain the conflict in medellin as a "local expression" of the conflict that took place on the national stage. this article questions this thesis. instead it suggests that more than an urban "war," explainable from the national situation and under a conception of state and instrumental/rational politics and power, medellin has been living inserted into a multiplicity of conflicts that articulate in specific ways, and which involve much more subjective aspects that can be seen in pre-existing neighborhood dynamics from before the "war," which because of these circumstances we prefer to call urban conflict instead. on the basis on what we found during the investigation and centered on systematic and extensive fieldwork (workshops, interviews, walkthroughs, images, photographs etc.) that took four months to complete, we suggest to the experts on urban violence some new "keys" to interpret the conflict in medellin. one of those is tied to subjective aspects or dimensions of neighborhood life that intervene significantly in conflict dynamics, including political conflicts.
Urban Conflict Vs. Urban “War:” Another “Key” to Read the Conflict in Medellin
Elsa Blair,Marisol Grisales Hernández,Ana María Muoz Guzmán
Universitas Humanística , 2009,
Abstract: The urban conflict in Medellin between 1995 and 2002 has been described, fundamentally, as an urban war that can be explained based on the armed political conflict that took place on a national level. The presence of armed actors linked to the Autodefensas Unidas de Colombia (AUC) – essentially the “cacique nutibara” block – and the guerilla groups Fuerzas Armadas Revolucionarias de Colombia FARC and Ejercito de Liberacion Nacional ELN, allowed many analysts to explain the conflict in Medellin as a “local expression” of the conflict that took place on the national stage. This article questions this thesis. Instead it suggests that more than an urban “war,” explainable from the national situation and under a conception of state and instrumental/rational politics and power, Medellin has been living inserted into a multiplicity of conflicts that articulate in specific ways, and which involve much more subjective aspects that can be seen in pre-existing neighborhood dynamics from before the “war,” which because of these circumstances we prefer to call urban conflict instead. On the basis on what we found during the investigation and centered on systematic and extensive fieldwork (workshops, interviews, walkthroughs, images, photographs etc.) that took four months to complete, we suggest to the experts on urban violence some new “keys” to interpret the conflict in Medellin. One of those is tied to subjective aspects or dimensions of neighborhood life that intervene significantly in conflict dynamics, including political conflicts
Producción sostenible de plátano con bajos insumos en la zona norte de Costa Rica
Carlos Muoz Ruiz,Tomás Guzmán
Tecnología en Marcha , 2007,
Abstract: Se evaluó en fincas un programa de producción sostenible de plátano. El objetivo fue el de disminuir la dependencia del uso de agroquímicos en la actividad agrícola y cambiar paradigmas de producción de plátano existentes en la Región Huetar Norte del país, para ser más amigables con el medio y menos contaminantes. Se describen alternativas de producción de plátano en sistemas integrados con otros rubros productivos. Se analizaron y caracterizaron los productores participantes, se les orientó en la escogencia de los rubros productivos por utilizar en sus fincas en asocio con el plátano. Se definen programas de manejo inscritos dentro del modelo y se dan las medidas de verificación in situ. Al final, se realizó un análisis económico de cada finca y se evalúo el nivel de aprendizaje del productor y su aporte al proceso, como una retroalimentación del modelo. Los costos de producción fueron bajos en relación con el método de producción convencional y los ingresos se consideraron satisfactorios para el productor de plátano en la zona. El productor 1 logró obtener una disminución de un 27% en los costos de producción (¢174 500/ha), un ingreso de ¢705 000,00/ha y un beneficio neto de ¢531 100/ha, al utilizar el modelo de producción sostenible propuesto. El segundo productor obtuvo con este modelo, un ingreso de ¢1 100 000/ha, un beneficio neto de ¢816 315,00, logrando bajar los costos de producción en un 44% (¢284 385,00). Los costos normales de producción/ha son de ¢640 552,50 para un sistema tradicional (el que realiza el productor, con bajos insumos) y de ¢635 996,00 para uno tipo convencional (con uso de agroquímicos). La disminución en el uso de agroquímicos, mediante la utilización del modelo propuesto, fue en este estudio en promedio de un 40% en ambos productores.
Efectos acústicos inmediatos de una secuencia de ejercicios vocales con tubos de resonancia Immediate effects of a vocal exercise sequence with resonance tubes
Marco Guzmán,Diego Higueras,Catherine Fincheira,Daniel Muoz
Revista CEFAC , 2012,
Abstract: OBJETIVO: el propósito de este estudio es conocer el efecto acústico inmediato de una secuencia de ejercicios fonatorios utilizando tubos de resonancia en un grupo de sujetos disfónicos. MéTODO: se aplicó una secuencia única de cuatro tareas fonatorias dentro de tubos de resonancia a veinticuatro profesores con voces disfónicas, evaluadas perceptualmente con la escala GRBAS. Las muestras de voz fueron grabadas antes y después de la secuencia de ejercicios. El análisis acústico incluyó Cepstrum, Jitter, Shimmer y relación armónico-ruido (NHR). Se solitó completar un protocolo de autovaloración vocal posterior a la secuencia de ejercicios para evaluar los efectos subjetivos. Se compararon los valores de los parámetros acústicos en las muestras pre y post entrenamiento. RESULTADOS: cambios significativos fueron obtenidos en el análisis Cepstral, Jitter y relación armónico-ruido. En la autovaloración, los efectos positivos predominaron sobre los negativos, siendo los principales: voz más estable, voz más clara y garganta más abierta. CONCLUSIóN: el uso de tareas fonatorias dentro de tubos de resonancia puede tener un efecto fisiológico terapéutico inmediato en sujetos con voces disfónicas y una percepción subjetiva de mejoría en la producción de la voz posterior a la terapia. PURPOSE: the purpose of this study is to determine the immediately acoustic effect of phonatory exercise sequence using resonance tubes in a group of dysphonic subjects METHOD: a unique sequence of four phonatory tasks within resonance tubes was applied in twenty-four teachers with dysphonic voices, assessed perceptually with GRBAS scale. Voice samples were recorded before and after the exercise sequence. Acoustic analysis included the following items: Cepstrum, Jitter, Shimmer, noise-harmonic ratio (NHR). Subjects were asked to fill out a vocal self-assessment protocol after the exercise sequence in order to assess the subjective effects of these exercises. Acoustic parameters of voice samples pre and post training were compared. RESULTS: significant changes were obtained in the Cepstral analysis, jitter and harmonic-to-noise ratio. In the self-assessment, positive effects prevailed over the negative ones, being the main, as follows: more steady voice, more clear voice and more open throat sensation. CONCLUSION: the outcome indicates that the use of phonatory tasks with resonance tubes may have immediate therapeutic physiological effects on subjects with hoarse voices and a subjective perception of improvement in voice production after the therapy.
Política Nacional de infancia en Chile: Derechos limitados Chilean National Policy for Children: Restricted Rights
Carolina Muoz-Guzmán,Beatriz Aguirre-Pastén
Portularia : Revista de Trabajo Social , 2012, DOI: 10.5218/prts.2012.0033
Abstract: El estudio investiga las tensiones entre el perfil socio-demográfico de los usuarios de mayor complejidad de los servicios sociales de infancia en Chile y la oferta de prestaciones de estos servicios, en el marco de la nueva Política de infancia que rige en Chile desde 1999. Material y métodos: Se analizaron los registros estadísticos de la oferta programática de los a os 2007-2008 por medio de técnicas de estadística descriptiva y comparativa. Resultados: se establecieron tendencias según edad, sexo, escolaridad, adulto responsable, región de origen, causales de ingreso, y reingresos; concentrándose la población más joven, femenina, con menos retraso escolar y residente en la misma región donde opera el servicio, en los programas no ejecutados directamente por el Estado. Por su parte, la población adolescente, masculina, proveniente de regiones distintas a la región donde se ejecuta el programa y con causales de ingreso asociadas a mayor vulnerabilidad social, se concentra en los programas ejecutados directamente por el Estado. Discusión: el análisis de datos da cuenta de una distribución diferenciada de la población usuaria de los servicios sociales de infancia en los distintos programas estudiados, encontrándose mayor fragilidad en los entornos de los usuarios de aquellos programas ejecutados directamente por el Estado, aun cuando estos son definidos como transitorios y no especializados, lo cual evidencia una tensión e inconsistencia con los principios orientadores de nueva la política de infancia de Chile, limitando la garantía de plenitud de derechos en la que se basa. The research studies tensions between socio-demographic profile in most complex children using social services in Chile and the programmatic offer these services provide, considering the underlying new Children National Policy ruling from 1999. Material and Methods: users' statistical records from 2007 to 20008 coming from selected programs where analyzed using descriptive and comparative statistical techniques. Results: We set trends by age, sex, education, and responsible adult, region of origin, intake causes and reentry numbers. We found younger and more feminine population, with less educational lag and living in the same region where the service operates in those programs not executed directly by the state; a population composed mainly by adolescents, males, from different regions to the region where the program runs and with additional intake causes that increase complexity, in programs run directly by the state. Discussion: The analysis reveals a differential distribution of
Competencias en los procesos de ense anza-aprendizaje virtual y semipresencial Teaching Skills in Virtual and Blended Learning Environments
Francisco Imbernón Muoz,Patricia Silva García,Carolina Guzmán Valenzuela
Comunicar , 2011, DOI: 10.3916/c36-2011-03-01
Abstract: Actualmente las universidades están inmersas en lo que se conoce como el proceso de convergencia europea y que llevará al Espacio Europeo de Educación Superior (EEES). El objetivo es dotar a Europa de un sistema universitario homogéneo, compatible y flexible que permita a los estudiantes y titulados universitarios europeos una mayor movilidad, así como ofrecer al sistema universitario europeo unos niveles de transparencia y calidad, mediante sistemas de evaluación, que le hagan atractivo y competitivo en el ámbito internacional dentro del actual proceso de globalización. En este artículo, interesa centrar la reflexión en dos de las modalidades de la educación a distancia que asumirán importancia en ese cambio universitario: el e-learning y el b-learning, que consisten básicamente en la virtualización de los procesos de aprendizaje a través del uso de equipos informáticos. Para ello se ha realizado una investigación cualitativa con metodología de estudio de casos. De entre los resultados se destaca el uso de las TIC por parte del profesorado para conseguir un mejor aprendizaje en los estudiantes, de igual forma un porcentaje importante de los profesores 78% utiliza alguna plataforma virtual como apoyo a la docencia. Como conclusión se resalta que las políticas de formación deberían fortalecer las competencias del profesorado universitario en el uso de dispositivos telemáticos, recursos e instrumentos relacionados con el aprendizaje semipresencial y virtual. Universities are currently immersed in what is known as the process of European convergence to create the European Higher Education Area (EHEA). The aim is to establish a standardized, compatible and flexible European university system that enables graduates and undergraduates to move easily from one institution to another within Europe. As a result of evaluation mechanisms, the system will be transparent and of high quality, which will make it attractive and competitive internationally in a globalized world. In this paper, we focus on two distance learning modes that will become more important as a result of this change in universities: e-learning and b-learning. These basically involve the virtualization of learning processes through the use of computer equipment. We carried out a qualitative study using the case study method. The results indicate that teaching staff use information and communication technology (ICT) to improve student learning. Similarly, a high percentage (78%) of lecturers use some form of digital platform as a support for teaching. In conclusion, training policies should stren
Presencia de Listeria monocytogenes en alimentos listos para el consumo, procedentes de plazas de mercado y delicatessen de supermercados de cadena, Bogotá, D.C, 2002-2008
Muoz,Ana Isabel; Vargas,Mercedes; Otero,Ligia; Díaz,Graciela; Guzmán,Viviana;
Biomédica , 2011,
Abstract: introduction. the increase in diseases transmitted by foods has become a public health problem. listeria monocytogenes, the etiological agent of listeriosis or typical food poisoning,is considered to be among the most important food borne illnesses. high risk foods for l.monocytogenes have been recognized as foods already prepared for consumption and made available in retail outlets. objective. the presence of l. monocytogenes was identified in prepared foods found in open markets and delicatessens in the city of bogotá. material and methods. a transverse descriptive study over a 7-year period, with an analytic component, in which 600 foods were analyzed--300 from delicatessens and 300 from open market places. reference methods were used to determine the presence or absence of l. monocytogenes in 25 grams or milliliters a food sample. results. of the 600 samples, 68 were positive for l. monocytogenes (11.3%). twenty-six (38.2%) were taken from delicatessens and 42 (61.8%) from open market places. the serotype most frequently isolated was 4b, with 53 (78.0%) isolations. fresh cheeses and matured cheeses showed greater contamination with l. monocytogenes than the other foods (p<0.001 in both cases). conclusions. the results indicate that prepared foods are vehicles for the transmission of the listeria bacterium. these potentially high risk foods are candidates for control and monitoring by public health authorities. programs must be instituted to implement surveillance norms that lead to the reduction and control of this microorganism and geared toward the prevention of food borne diseases.
Observando las alianzas de colaboración entre Organizaciones Sin Fines de Lucro y Organizaciones Estatales Chilenas
Muoz Guzmán,Carolina; Miranda Sánchez,Paula; Flores Guerrero,Rodrigo;
Polis (Santiago) , 2012, DOI: 10.4067/S0718-65682012000200006
Abstract: the progressive transfer of responsibilities in social serviceimplementation from state to nongovernmental actors, brings a demand to the samestate, who instead of reducing its labor, should develop adequate mechanisms ofregulation to ensure efficiency in social offer, in order to satisfy citizens demandsin those public political commitments. likewise, public institutions should recognizethe demands from the private world to act articulated towards common goals, whichultimately would lead to a horizon of development of a more egalitarian society.this study reports on the tensions revealed by social services authorities servingvulnerable people, in regards to their collaborative relationship with non profit organizations, in order to reach that horizon.
Efectos acústicos inmediatos de una secuencia de ejercicios vocales con tubos de resonancia
Guzmán, Marco;Higueras, Diego;Fincheira, Catherine;Muoz, Daniel;Guajardo, Carlos;
Revista CEFAC , 2012, DOI: 10.1590/S1516-18462011005000127
Abstract: purpose: the purpose of this study is to determine the immediately acoustic effect of phonatory exercise sequence using resonance tubes in a group of dysphonic subjects method: a unique sequence of four phonatory tasks within resonance tubes was applied in twenty-four teachers with dysphonic voices, assessed perceptually with grbas scale. voice samples were recorded before and after the exercise sequence. acoustic analysis included the following items: cepstrum, jitter, shimmer, noise-harmonic ratio (nhr). subjects were asked to fill out a vocal self-assessment protocol after the exercise sequence in order to assess the subjective effects of these exercises. acoustic parameters of voice samples pre and post training were compared. results: significant changes were obtained in the cepstral analysis, jitter and harmonic-to-noise ratio. in the self-assessment, positive effects prevailed over the negative ones, being the main, as follows: more steady voice, more clear voice and more open throat sensation. conclusion: the outcome indicates that the use of phonatory tasks with resonance tubes may have immediate therapeutic physiological effects on subjects with hoarse voices and a subjective perception of improvement in voice production after the therapy.
Antígenos de secreción-excreción de Toxocara canis reconocidos por cachorros del área metropolitana de la Ciudad de México
Muoz-Guzmán, Marco Antonio;Alba-Hurtado, Fernando;
Veterinaria México , 2010,
Abstract: the aim of the study was to determine the toxocara canis larvae secretory-excretory antigens (setc-ag), which are most often recognized by puppies infected naturally from the metropolitan area of mexico city. at necropsy, adult phases of t. canis were found in the intestine of 20 puppies (64.6%), and 11 had no parasites (35.4%). sera of all animals with t. canis in the intestine and seven animals without worms were positive to elisa (x = 0.683 ± 0.184 od) and recognized several setc-ag by western blot (wb). sera from four puppies with no t. canis did not recognize any type of antigen by wb and were negative to elisa-igg (x = 0.078 ± 0.045 od). sera from the puppies recognized three antigen groups. the first one included seven low molecular weight antigens (16, 20, 23, 24, 28, 32 and 38 kda); the second one, three high molecular weight antigens (400, 200 and 120 kda) and the third one, four antigens of intermediate molecular weight (86, 74, 66 and 47 kda). the most frequently recognized setc-ag were of 32, 38, 66, 120 and 200 kda, which makes them good candidate antigens to develop immunodiagnosis tests in dogs.
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