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Search Results: 1 - 10 of 23879 matches for " Fernando; Baena "
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Valores personales e interpersonales en adolescentes y adultos de la ciudad de Medellín y el área metropolitana
Restrepo,Jorge Emiro; Martínez,Gerardo; Soto,Juan David; Martínez,Fernando; Baena,Bibiana;
Diversitas: Perspectivas en Psicología , 2009,
Abstract: en este artículo se presentan los resultados de una investigación en psicología social, que tuvo como objetivo evaluar seis valores personales y seis valores interpersonales, a través de dos cuestionarios en los diferentes estratos socioeconómicos de una muestra de 970 personas en medellín y el área metropolitana. el objetivo principal del proyecto fue determinar si existían diferencias estadísticas significativas entre los estratos socioeconómicos en cada uno de los doce valores evaluados. como hallazgo relevante del estudio se resalta el hecho de que no se encontraron diferencias significativas entre los valores estadísticos de las medias para ninguno de los valores entre los diferentes estratos. la comparación gráfica de los valores de las medias para cada uno de los seis valores evaluados por cada cuestionario (spv y siv) no evidencio, tampoco, diferencias considerables entre las poblaciones argentina y espa?ola en relación con la muestra colombiana: un hallazgo interesante para la psicología transcultural.
Regionaliza??o de vaz?es com base em modelo digital de eleva??o para a bacia do Rio Paraíba do Sul
Baena, Luiz G. N.;Silva, Demetrius D. da;Pruski, Fernando F.;Calijuri, Maria L.;
Engenharia Agrícola , 2004, DOI: 10.1590/S0100-69162004000300013
Abstract: the stream-flow regionalization is made in locations where the hydrologic information is not available, however the determination of the physical characteristics to each place of interest considerably limits the application of the results of a conventional study of the stream-flow regionalization. one of the solutions for this problem is the automation of the process using a hidrologically consistent digital elevation model (hcdem). the main objective of this paper was the regionalization of the mean, maximum and minimum stream-flow in south paraíba river using a hcdem. the duration curve also was regionalized. the digital elevation model was shown hidrologically consistent making possible the automation of the process to estimate the physical characteristics. four hidrologically homogeneous areas were identified for this studied area and the regression equations were obtained. the drainage area and the length of the main river were the most important variables to represent the regionalysed functions.
Síntesis y caracterización de pigmentos tipo espinela CuCr2O4 a través del método autocombustión en solución
Edgar Andrés Chavarriaga Miranda,Natalia Betancur Granados,Juan Fernando Montoya,Oscar Jaime Restrepo Baena
Revista Lasallista de Investigación , 2012,
Abstract: Introducción. En la producción industrial de pigmentos tradicionalmente se ha empleado la reacción estado sólido como método de obtención de óxidos complejos, tales como las espinelas de aplicaciones pigmentantes (con fórmula AB2O4), los cuales se sintetizan a través de rutas alternas, buscando con ello reducir costos y disminución del gasto energético en el proceso de producción. En este trabajo se sintetizó el pigmento tipo espinela CuCr2O4 por el método de autocombustión en solución por las rutas citrato-nitrato, urea-nitrato y glicina-nitrato. Objetivo. Obtener estructuras tipo espinela por los métodos de autocombustión citrato-nitrato, ureanitrato y glicina-nitrato. Materiales y métodos. Para la síntesis de los pigmentos a través de las distintas rutas se emplearon los compuestos (Cu(NO3)2.3 H2O), (Cr(NO3)3.9 H2O), (CH2NH2CO2H), (CO(NH2)2), (C6H8O7), (CuCO3.Cu(OH)2) y finalmente (III) (Cr2O3). Los pigmentos obtenidos se caracterizaron usando diferentes técnicas tales como difracción de rayos X (DRX), microscopia electrónica de barrido (MEB), y espectrofotometría UV-VIS. Resultados y discusión. Con los métodos de síntesis propuestos se pudo obtener un control del tama o y de la morfología de las partículas y la pureza de las fases. Conclusión. Los pigmentos obtenidos a través de las diferentes rutas presentan características y respuestas de caracterización similares, lo cual lleva a considerar que se llegó a un mismo pigmento y que es posible reducir costos en la síntesis.
RESE A Diez días en un manicomio / La vuelta al mundo en 72 días
Francisco Baena
IC : Revista Científica de Información y Comunicación , 2010,
Abstract:
Rese a de "El centro en lo múltiple" de Antonio García Berrio
Enrique BAENA
Utopia y Praxis Latinoamericana , 2008,
Abstract:
Master Franchising as Foreign Entry Mode: Evidences from the Spanish Franchise System
Veronica Baena
ISRN Economics , 2012, DOI: 10.5402/2012/293478
Abstract:
Master Franchising as Foreign Entry Mode: Evidences from the Spanish Franchise System
Veronica Baena
ISRN Economics , 2012, DOI: 10.5402/2012/293478
Abstract: The present study examines how a number of market conditions may constrain entry mode choice into Middle East nations. Specifically, this paper focuses on master franchising and analyzes the determining factors in this entry mode decision. A quantitative approach was applied to a sample of Spanish franchisors operating through 96 franchisee outlets across 6 Middle East countries in January 2010. They are Bahrain, Cyprus, Israel, Jordan, Saudi Arabia, and United Arab Emirates. Findings show the importance of a number of host country’s features (economic development, corruption, and efficiency of contract enforcement). The scant theoretical or empirical attention given to the topic of foreign entry mode choice via franchising has usually been examined from a U.S. base and focused on developed markets. To fill this gap, the present study analyzes the international spread of the Spanish franchise system—ranked fifth worldwide both in terms of the number of franchisors (1,019) and the quantity of franchisee outlets (65,026)—into the Middle East. 1. Introduction The entry mode choice is the selection of an institutional arrangement for organizing and conducting business transactions. It determines the extent to which the firm gets involved in developing and implementing the strategy in the foreign markets, the level of control the firm enjoys its business operations, and the degree to which it succeeds in the target market. The entry mode choice is then one of the most critical decisions in international marketing [1–6]. Many forms of entry are available. Most literature distinguishes between equity and nonequity modes to enter foreign markets. Equity modes involve companies taking some degree of ownership of the market organizations involved, including wholly owned subsidiaries and joint ventures. In contrast, nonequity modes do not involve ownership and include exporting in combination with some forms of contractual arrangements such as licensing or franchising [6]. Choosing one or another entry mode may have enormous strategic consequences for the firm’s performance and survival [1, 7]. Regarding nonequity modes of entry, franchising can be defined as a licensing agreement between the franchisor and the franchisee, whereby the former grants the permission for the use of his trademarks, ideas, patent of goodwill in lieu of royalty or some other consideration by the franchisee [8]. This business format offers numerous advantages, as compared to chain-ownership, such as having owner-managers who are motivated in making their individual stores succeed. The
Taquicardia ventricular polimórfica catecolaminérgica
Velasco,Alejandro; Velasco,Víctor M; Rosas,Fernando; Betancourt,Juan F; Baena,Juan; álvarez,Alexander; Balanta,Alirio;
Revista Colombiana de Cardiología , 2009,
Abstract: catecholaminergic polymorphic ventricular tachycardia is an inherited heart rhythm disorder recently discovered by genetic and electrophysiological diagnostic advancements. it consists of an inherited disorder characterized by the induction of bi-directional ventricular tachycardia in the presence of catecholamines, without a structural cardiac abnormality. mutations in the ryanodine receptor gene ryr2, have been linked with an autosomic dominant form, while mutations in the calsequestrin gene casq 2 have showed correlation with an autosomic recessive form. the average age of onset is between 7 and 9 years of age, and clinical symptoms vary from syncope to sudden cardiac death. the diagnosis is confirmed by inducting ventricular tachycardia through a stress test or during an infusion of sympathicomimetic drugs like isoproterenol, aided by the identification of mutations in the ryr2 and casq2 genes through gene analysis. implantable cardiodefibrillator devices remain a valid therapeutic option in many cases due to the fact that antiarrhythmic drugs have not shown efficacy. sympathetic cardiac denervation can be useful in some special cases. catecholaminergic polymorphic ventricular tachycardia opens a wide field for the development of new antiarrhythmic drugs and the use of gene therapy for cardiac rhythm disorders.
Structural and Functional Insights from the Metagenome of an Acidic Hot Spring Microbial Planktonic Community in the Colombian Andes
Diego Javier Jiménez, Fernando Dini Andreote, Diego Chaves, José Salvador Monta?a, Cesar Osorio-Forero, Howard Junca, María Mercedes Zambrano, Sandra Baena
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0052069
Abstract: A taxonomic and annotated functional description of microbial life was deduced from 53 Mb of metagenomic sequence retrieved from a planktonic fraction of the Neotropical high Andean (3,973 meters above sea level) acidic hot spring El Coquito (EC). A classification of unassembled metagenomic reads using different databases showed a high proportion of Gammaproteobacteria and Alphaproteobacteria (in total read affiliation), and through taxonomic affiliation of 16S rRNA gene fragments we observed the presence of Proteobacteria, micro-algae chloroplast and Firmicutes. Reads mapped against the genomes Acidiphilium cryptum JF-5, Legionella pneumophila str. Corby and Acidithiobacillus caldus revealed the presence of transposase-like sequences, potentially involved in horizontal gene transfer. Functional annotation and hierarchical comparison with different datasets obtained by pyrosequencing in different ecosystems showed that the microbial community also contained extensive DNA repair systems, possibly to cope with ultraviolet radiation at such high altitudes. Analysis of genes involved in the nitrogen cycle indicated the presence of dissimilatory nitrate reduction to N2 (narGHI, nirS, norBCDQ and nosZ), associated with Proteobacteria-like sequences. Genes involved in the sulfur cycle (cysDN, cysNC and aprA) indicated adenylsulfate and sulfite production that were affiliated to several bacterial species. In summary, metagenomic sequence data provided insight regarding the structure and possible functions of this hot spring microbial community, describing some groups potentially involved in the nitrogen and sulfur cycling in this environment.
Nuestros primeros 50 a os
Luis Guillermo Palacio Baena
Revista Colombiana de Ciencias Pecuarias , 2012,
Abstract:
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