Hijos de Argos : cazadores de nombres

Fondo Margaritainés Restrepo

Autonomia das escolas: implicações e alterações na organização escolar

Este estudo teve como objectivo investigar o que mudou na organização escolar com o reforço da sua autonomia nomeadamente com a celebração dos contratos de autonomia. A investigação incidiu sobre quatro Escolas/Agrupamentos, duas com Contrato de Autonomia e outras duas sem Contrato de Autonomia. No estudo optou-se por utilizar como técnicas de recolha de dados a fonte estatística e o inquérito por entrevista, recorrendo para o efeito a entrevistas semi-estruturadas aos Presidentes dos Órgãos de Gestão das quatro Escolas/Agrupamentos envolvidos no estudo. Os dados estatísticos foram obtidos através da análise das pautas relativas ao 3° período dos anos lectivos 2006/2007 e 2007/2008, das quatro escolas/Agrupamentos envolvidos no estudo. Dos resultados obtidos nesta investigação destacamos a importância que os Presidente dos Órgãos de Gestão dão à necessidade de uma maior autonomia. Os Contratos de Autonomia potenciaram um conjunto de alterações na organização escolar levando ao aumento do sucesso escolar e da criação de uma forte identidade da escola com Contrato de Autonomia. Será importante que estudos posteriores analisem os resultados obtidos nas vinte e duas escolas que celebraram contratos de autonomia, os quais terminam no final do ano lectivo 2010/2011, sendo certo que dos resultados desta investigação ressaltaram as vantagens de cada Escola/Agrupamento poder escolher o seu próprio caminho para atingir o sucesso escolar e social dos seus alunos. ABSTRACT: This study aimed to investigate what has changed in school organization as a result of the legal reinforcement of its power and autonomy and, in particular, due to the celebration of contracts of autonomy. The research focused on four establishments (Schools/School Groups), two of them already functioning under a contract of autonomy and the other two with no such contract. The techniques used in our investigation were the collection and treatment of statistical data and the interview survey, mainly the semi-structured interview type directed to the Presidents of the Governing Bodies of all the four establishments involved. At the end of the present investigation, it is clear to us all the advantages presented to an educational establishment which is able to choose its own path to achieve the academic success and the social development of its students. Therefore, it is of the utmost importance that future studies duly analyse the results achieved by all the twenty-two school establishments which celebrated contracts of autonomy ending at the term of the academic year 2009/2010.

Jorge Reynolds Pombo, un ingeniero dedicado a la investigación : secretos de un corazón de ballena

Fondo Margaritainés Restrepo

El bienestar del futbolista colombiano a través de sus derechos

56 p.

O ouro branco abre caminho: o algodão e a modernização do espaço urbano da Cidade da Parahyba (1850-1924)

The present research deals with the modernization process of the Cidade da Parahyba2, between 1850 and 1924, and its relation with the cotton economy, which represented the main source of wealth accumulation for both the private and the public sectors throughout the First Republic. This study on urban history was developed by focusing on the understanding of the city s spatial formation, and despite its emphasis on the economic aspects involved, other factors that also contribute to the development of the social life were not put aside. The modernization process of the Cidade da Parahyba was also analyzed during the period established for the study according to a chronological and thematic approach that established comparisons with the financial situation of the State, whenever this was necessary, with special attention to the contribution of the cotton economy to the State´s revenues. It was possible to detect a lack of financial help and loans from the federal and municipal administrations for finishing several public works already underway in the capital, since the federal funds allocated to the State of Parahyba do Norte were rather employed in emergency works against droughts and in agricultural development. One can then conclude that the financial resources required for the urban interventions were withdrawn from the State s treasury itself, resources that were collected mainly from activities such as cotton exportation and cotton trading. Another factor shows the interdependence between the urban remodeling and the cotton economy: during the years marked by great droughts or by hard plagues on the cotton plantations, cotton production decreased, as well as the State s finances. The first measures taken by the State s administrators were to halt all projects of urban remodeling in progress in the Cidade da Parahyba, which was, clearly, the most privileged city by the State s presidents during the period analyzed. 2 The city of João Pessoa was named Cidade da Parahyba, a designation that remained until September 1930, when it received its present-day name in order to pay homage to the president of the State, João Pessoa Cavalcanti de Albuquerque, murdered in the city of Recife in August of that same year. At that time, the State of Paraíba was known as Parahyba do Norte. Since this work is limited to a period of time comprised within the First Republic, the names employed respect the terms used in those days

Caminata de Solidaridad por Colombia

la comunidad realiza encuentros en busca de la paz en Colombia realizando una caminata por la solidaridad, en la cual participan tanto niños como hombres y mujeres, haciendo participes a todos los colombianos.

Análise histórico-comparativa da helicicultura na Colômbia

Dissertação (mestrado)—Universidade de Brasília, Faculdade de Agronomia e Medicina Veterinária, Programa de Pós-Graduação em Agronegócios, 2016.

La declaración de San José y la integración hemisférica

Introducción La iniciativa para la creación de un Área de Libre Comercio en el Hemisferio Americano (ALCA), es un decir de un solo mercado para la libre circulación de bienes, servicios e inversiones, tiene su origen en la Cumbre de Presidentes de América, celebrada en Miami en diciembre del 2004. En esa oportunidad los Presidentes de 34 países del Hemisferio suscribieron el Pacto de Desarrollo y Prosperidad de las Américas orientado a consolidad y fomentar vínculos estrechos de cooperación entre los países…

Analysis of the LRRK2 p.G2019S mutation in Colombian Parkinson’s Disease Patients

Introduction: Mutations in the leucine-rich repeat kinase 2 gene (LRRK2 or Dardarin) are considered to be a common cause of autosomal dominant and sporadic Parkinson´s disease, but the prevalence of these mutations varies among populations. Objective: To analyzed the frequency of the LRRK2 p.G2019S mutation (c.6055G>A transition) in a sample of Colombian patients. Methods: In the present study we have analyzed the frequency of the LRRK2 p.G2019S mutation in 154 patients with familial or sporadic Parkinson Disease, including early and late onset patients, and 162 normal controls. Results: Our results show occurrence of this mutation in two cases (2/154, 1.3%) with classical Parkinson´s signs, and one completely asymptomatic control (1/162, 0.6%). Conclusion: The p.G2019S mutation is not an important causal factor of Parkinson Disease in Colombia having similar frequencies to those reported in other Latin American populations.

Optimización financiera de portafolios de inversión en la Bolsa de Valores de Colombia mediante el uso de RGOP

La Bolsa de Valores de Colombia (BVC) ha tenido un impacto reducido en la población colombiana sobre todo debido a la falta de educación financiera y a múltiples casos de corrupción que han opacado su rol en la sociedad -- En general, los colombianos ven con incertidumbre, desconfianza y escepticismo las ventajas de invertir en la bolsa tales como obtener rendimientos superiores que las de las inversiones tradicionales, seguridad en las transacciones y disponibilidad del dinero cuando se requiera, lo que desencadena inversiones en métodos más tradicionales, como los CDT (certificado de depósito a término), con muy bajas tasas de rendimiento, o en negocios que representan altos riesgos -- Dicho comportamiento ha generado que muchas de las inversiones que realiza una persona promedio en Colombia no vayan más allá de productos financieros conocidos, negocios familiares o tradicionales, pirámides o multiniveles que entorpecen el sistema financiero -- Una de las principales barreras encontradas al momento de invertir en la Bolsa de Valores de Colombia son creencias populares tales como: a) es obligatorio tener grandes capitales de dinero, o b) es necesario un conocimiento financiero especializado para invertir -- También resulta incierto para muchos usuarios en cuáles acciones convendría invertir una vez desmitificadas las anteriores creencias -- Para mitigar algunos de dichos inconvenientes, el estudio de portafolios de inversión propone como estrategia principal la diversificación de la inversión y la limitación del riesgo con el fin de crear portafolios altamente eficientes en términos financieros -- Si bien existen múltiples técnicas para la creación y la optimización de portafolios de inversión (por ejemplo: growth optimal portfolio), su uso en Colombia es limitado debido en lo primordial a que es una metodología reciente y a que su implementación no suele ser trivial, puesto que requiere el uso de múltiples herramientas computacionales para ser puesto en práctica -- El presente trabajo de grado presenta la implementación de un algoritmo de optimización robusto, en el sentido de las distribuciones de probabilidad requeridas, llamado portafolio óptimo de crecimiento robusto (robust growth optimal portfolio o RGOP) para acciones de la Bolsa de Valores de Colombia -- Se escogieron varios portafolios al tener en cuenta tres criterios de inclusión para las acciones y se simularon tres escenarios y una suposición con el fin de demostrar la eficacia del algoritmo para minimizar el riesgo de inversión y maximizar la tasa de crecimiento en unos horizontes de tiempo predefinidos -- En último lugar se compararon las rentabilidades de los diferentes portafolios propuestos con las tasas de captación de CDT y CDA (certificados de depósito de ahorro) de bancos populares en Colombia -- La implementación del algoritmo se realizó en la plataforma Matlab y se acudió a varias bibliotecas de modelamiento matemático -- Sin tener en cuentas los costos de transacciones por compra y venta de acciones, los resultados muestran que mientras el sector financiero ofrecía a través de los CDT inferiores de 180 días un promedio de 4.80% de rentabilidad, en un período similar el RGOP arrojaba en promedio 11.83% en los portafolios de inversión de los tres escenarios, es decir, la metodología propuesta ofreció rendimientos superiores a las ofertas de los bancos en 147% para los períodos simulados -- En conclusión, todos los escenarios analizados presentaron mejores rendimientos en la simulación que los rendimientos ofrecidos por los bancos durante el mismo período; se les dio mayor ponderación a las acciones que presentaron tasas de crecimiento mayores de tal forma que se minimizaran los riesgos implícitos de invertir en bolsa -- El RGOP mostró ser una técnica robusta para su uso con acciones de la Bolsa de Valores de Colombia porque ofreció una sólida combinación entre retorno y riesgo para futuros inversionistas

Characterization of polymorphisms of genes ADH2, ADH3, ALDH2 and CYP2E1 and relationship to the alcoholism in a Colombian population

Objective: Identify and characterize polymorphisms of genes ADH2, ADH3, ALDH2 and CYP2E1 in a Colombian population residing in the city of Bogotá and determine its possible relationship to the alcoholism. Methods: ADH2, ADH3, ALDH2, and CYP2E1 genotypes a population of 148 individuals with non-problematic alcohol and 65 individuals with alcoholism were determined with TaqMan probes and PCR-RFLP. DNA was obtained from peripheral blood white cells. Results: Significant difference was found in family history of alcoholism and use of other psychoactive substances to compare alcoholics with controls. When allelic frequencies for each category (gender) were considered, frequency of A2 allele carriers in ADH2 was found higher in male patients than controls. In women, the relative frequency for c1 allele in CYP2E1 was lower in controls than alcoholics. The ALDH2 locus is monomorphic. No significant differences in allele distributions of the loci examined to compare two populations were observed, however when stratifying the same trend was found that these differences tended to be significant. Conclusions: This study allows us to conclude the positive association between family history of alcoholism and alcoholism suggesting that there is a favorable hereditary predisposition. Since substance dependence requires interaction of multiple genes, the combination of genotypes ADH2*2, CYP2E1*1 combined with genotype homozygous ALDH2*1 found in this study could be leading to the population to a potential risk to alcoholism.

Characterization of polymorphisms of genes ADH2, ADH3, ALDH2 and CYP2E1 and relationship to the alcoholism in a Colombian population

Objective: Identify and characterize polymorphisms of genes ADH2, ADH3, ALDH2 and CYP2E1 in a Colombian population residing in the city of Bogotá and determine its possible relationship to the alcoholism. Methods: ADH2, ADH3, ALDH2, and CYP2E1 genotypes a population of 148 individuals with non-problematic alcohol and 65 individuals with alcoholism were determined with TaqMan probes and PCR-RFLP. DNA was obtained from peripheral blood white cells. Results: Significant difference was found in family history of alcoholism and use of other psychoactive substances to compare alcoholics with controls. When allelic frequencies for each category (gender) were considered, frequency of A2 allele carriers in ADH2 was found higher in male patients than controls. In women, the relative frequency for c1 allele in CYP2E1 was lower in controls than alcoholics. The ALDH2 locus is monomorphic. No significant differences in allele distributions of the loci examined to compare two populations were observed, however when stratifying the same trend was found that these differences tended to be significant. Conclusions: This study allows us to conclude the positive association between family history of alcoholism and alcoholism suggesting that there is a favourable hereditary predisposition. Since substance dependence requires interaction of multiple genes, the combination of genotypes ADH2*2, CYP2E1*1 combined with genotype homozygous ALDH2*1 found in this study could be leading to the population to a potential risk to alcoholism.

Veteranos nos Estados Unidos: McCain ou Obama?

Definidos os candidatos para a corrida presidencial rumo à Casa Branca, dever-se-á delinear as propostas de governo de cada um e seus respectivos apoios dentro da sociedade americana. O presente artigo busca analisar o significado das candidaturas de John McCain e Barack Obama e suas propostas de governo, em especial no que se refere à busca pelo voto dos veteranos de guerra.

Estados Unidos : campanha presidencial sem definição para o Iraque

Uma das maiores conseqüências da doutrina Bush para o cenário mundial foi a Guerra contra o Iraque. Essa guerra encontra lugar de destaque no rol das grandes questões discutidas entre os possíveis candidatos à Casa Branca, em 2008. Nesse sentido, o presente artigo busca analisar as conseqüências que essa guerra terá para as eleições vindouras.

Guantánamo : o desafio democrata

O artigo trata da eleição presidencial dos Estados Unidos. Aborda o desafio dos democratas em reformar o sistema prisional destinado ao combate do terrorismo. _______________________________________________________________________________________________ ABSTRACT