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Search Results: 1 - 10 of 157902 matches for " Carlos; Mari?o "
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Divergencias y antagonismos del movimiento social indígena en la Región de Arica y Parinacota (1965-1985)
Carlos Choque Mario
Confluenze. Rivista di Studi Iberoamericani , 2009,
Abstract: This article analyzes the differences and antagonisms of the indigenous social movement in northern Chile between the years 1965 to 1985. The study tries to unravel the origins and languages of indigenous organizations that have deconstructed their ethnic identity from cultural diversity, nationalism and political processes that have affected during this period. El presente artículo analiza las divergencias y antagonismos del movimiento social indígena en la Región de Arica y Parinacota1, entre los a os 1965 a 1985. El estudio intenta develar los orígenes y discursos de las organizaciones indígenas, que han deconstruido su identidad étnica a partir de la diversidad cultural, el nacionalismo y los procesos políticos que la han afectado durante este periodo.
LITOFACIES Y AMBIENTES DE ACUMULACIóN DE LA FORMACIóN GUADUAS EN LA PARTE CENTRAL DE LA CORDILLERA ORIENTAL- IMPLICACIONES PALEOGEOGRáFICAS
Amaya,Erika; Mario,Jorge; Jaramillo,Carlos;
Boletin de Geología , 2010,
Abstract: the guaduas formation was deposited during the cretaceous- tertiary transition, in the central part of the colombian eastern cordillera, and it has been recognized as a mudstone succession, with some sand levels, and coal. the goal is to determine a stacking pattern of guaduas formation?s lithofacies, which can be applicable to the cundiboyacense altiplano (plateau). so, 12 lithofacies were described and characterized - based on sedimentary structures and their occurrence on 10 stratigraphic columns and 400m of coal drillings cores, plus the analysis of previous stratigraphic information. the lithofacies assemblage allowed the interpretation of -sedimentary environments and helped to establish 4 depositional systems. additionally, from examination of facies cyclicity observed within the stratigraphic record, a markov chain analysis was developed for the guaduas formation deposits, that together with the correlation of the stratigraphic columns (taking into account the position of sea level) enabled the production of preliminary facies maps for part of the cundiboyacense altiplano, on which it is noticed the predominance of transitional environments toward the sw of the basin with a gradual shallowing toward ne as a result of differential subsidence.
Male sex workers in Córdoba, Argentina: sociodemographic characteristics and sex work experiences
Mario,Rodrigo; Minichiello,Victor; Disogra,Carlos;
Revista Panamericana de Salud Pública , 2003, DOI: 10.1590/S1020-49892003000400006
Abstract: objective: to report on the sociodemographic characteristics and work experiences of 31 male sex workers (msws) in the city of córdoba, argentina. methods: information on each of the msws was collected using a questionnaire that covered his personal characteristics and his work background, self-assessed general health status, and use of health and social services. scales were included in order to assess attitudes towards condom use, knowledge about safe sex, perceptions about the risk of getting hiv, individual self-efficacy, and locus of control. the questionnaire also asked each respondent to rank his level of agreement with interactive strategies for gaining client compliance with safe sex practices. results: in terms of their self-identity, out of the 30 msws who answered the question, 10 of them (33.3%) self-identified as heterosexual and 9 (30%) as bisexual. alcohol and drug consumption and unsafe sexual practices were relatively low among the msws. of the 31 msws responding, 21 of them (67.7%) reported that they had been tested for hiv, but only 13 of them (41.9%) said they had been vaccinated for either hepatitis a or hepatitis b. a variety of differences were found between the study's 17 street sex workers (sex workers who offer their services in public places such as streets and parks) and the 14 independent sex workers (sex workers who are self-employed, advertise and manage their own business, and have an exclusive location for their commercial sex work). the street msws were younger and had less formal education. independent msws were economically more settled, had been working longer in the sex industry, and were more comfortable about having sex with men. independent msws were also more likely to report a gay sexual orientation and less likely to report using alcohol, marijuana, or other substances. conclusions: the differences between street msws and independent msws are important since they could influence the negotiating of safer sex practices with
Male sex workers in Córdoba, Argentina: sociodemographic characteristics and sex work experiences
Mario Rodrigo,Minichiello Victor,Disogra Carlos
Revista Panamericana de Salud Pública , 2003,
Abstract: OBJECTIVE: To report on the sociodemographic characteristics and work experiences of 31 male sex workers (MSWs) in the city of Córdoba, Argentina. METHODS: Information on each of the MSWs was collected using a questionnaire that covered his personal characteristics and his work background, self-assessed general health status, and use of health and social services. Scales were included in order to assess attitudes towards condom use, knowledge about safe sex, perceptions about the risk of getting HIV, individual self-efficacy, and locus of control. The questionnaire also asked each respondent to rank his level of agreement with interactive strategies for gaining client compliance with safe sex practices. RESULTS: In terms of their self-identity, out of the 30 MSWs who answered the question, 10 of them (33.3%) self-identified as heterosexual and 9 (30%) as bisexual. Alcohol and drug consumption and unsafe sexual practices were relatively low among the MSWs. Of the 31 MSWs responding, 21 of them (67.7%) reported that they had been tested for HIV, but only 13 of them (41.9%) said they had been vaccinated for either hepatitis A or hepatitis B. A variety of differences were found between the study's 17 street sex workers (sex workers who offer their services in public places such as streets and parks) and the 14 independent sex workers (sex workers who are self-employed, advertise and manage their own business, and have an exclusive location for their commercial sex work). The street MSWs were younger and had less formal education. Independent MSWs were economically more settled, had been working longer in the sex industry, and were more comfortable about having sex with men. Independent MSWs were also more likely to report a gay sexual orientation and less likely to report using alcohol, marijuana, or other substances. CONCLUSIONS: The differences between street MSWs and independent MSWs are important since they could influence the negotiating of safer sex practices with clients. Programs aimed at preventing the spread of HIV and other sexually transmitted infections and promoting responsible self-care among MSWs in Córdoba should be introduced. Such programs could increase the proportion of MSWs who know their HIV serostatus and could make MSWs more aware of the risk of different sex acts performed in commercial sex encounters. Given the differences that we found between street MSWs and independent MSWs, specific strategies and educational materials should be developed for those two subgroups within the MSW population.
Aspectos sociales de la investigación "relación entre el estado nutricional pregestacional y gestacional con los resultados perinatales en una maternidad pública de Buenos Aires"
Susana Checa,Andrea Mario,Elsa Schvartzman,Carlos Grandi
Revista del Hospital Materno Infantil Ramón Sardá , 2006,
Abstract:
Repercusiones psicológicas del desempleo: Efectos colaterales de la crisis en el sector de la construcción (Psychological aftermath of unemployment: Collateral effects of the economic crisis on the construction sector)
Carlos Montes Pi?eiro,Rita Louzán Mario
Escritos de Psicología , 2013, DOI: 10.5231/psy.writ.2013.150
Abstract: As a result of the global financial crisis, the unemployment rate in Spain has reached historic proportions. In this regard, this study examines the psychological impact of unemployment on workers who have lost their jobs as a result of the crisis. We compared the psychological well-being of a sample of workers in the construction sector, classified into four different groups according to their employment status: unemployed (n = 57), temporary workers(n = 54), permanent workers (n = 52), and self-employed (n = 56). The results of the ANOVA show that unemployed people experience greater psychological distress than workers who keep their jobs, although the only statistically significant differences were found between unemployed and temporary workers. Finally, the theoretical and practical implications of the findings are discussed.
GEDI: a user-friendly toolbox for analysis of large-scale gene expression data
André Fujita, Jo?o R Sato, Carlos E Ferreira, Mari C Sogayar
BMC Bioinformatics , 2007, DOI: 10.1186/1471-2105-8-457
Abstract: Here, we introduce an user-friendly toolbox called GEDI (Gene Expression Data Interpreter), an extensible, open-source, and freely-available tool that we believe will be useful to a wide range of laboratories, and to researchers with no background in Mathematics and Computer Science, allowing them to analyze their own data by applying both classical and advanced approaches developed and recently published by Fujita et al.GEDI is an integrated user-friendly viewer that combines the state of the art SVR, DVAR and SVAR algorithms, previously developed by us. It facilitates the application of SVR, DVAR and SVAR, further than the mathematical formulas present in the corresponding publications, and allows one to better understand the results by means of available visualizations. Both running the statistical methods and visualizing the results are carried out within the graphical user interface, rendering these algorithms accessible to the broad community of researchers in Molecular Biology.High-throughput DNA microarray technologies yield up to tens of thousands of gene expression data, which are useful to identify differentially expressed genes, biomarkers and molecular disease profiles. In recent years, microarray platforms have become available at relatively low costs, becoming more popular among research groups which are interested in gene expression analysis. On the other hand, much effort has been spent in developing improved methods to analyze the data derived from these microarrays. These methods involve advanced mathematical and statistical models, which are quite cumbersome to biomedical researchers who attempt to implement these methods. Due to this difficulty, some of these advanced methods are often abandoned and data analysis is carried out using only the classical methods, which are implemented in popular statistical softwares. An user-friendly software could make it possible to use recently developed methods to integrate, qualify, and infer biological insi
Evaluating different methods of microarray data normalization
André Fujita, Jo?o Sato, Leonardo Rodrigues, Carlos Ferreira, Mari Sogayar
BMC Bioinformatics , 2006, DOI: 10.1186/1471-2105-7-469
Abstract: Here, we considered three commonly used normalization approaches, namely: Loess, Splines and Wavelets, and two non-parametric regression methods, which have yet to be used for normalization, namely, the Kernel smoothing and Support Vector Regression. The results obtained were compared using artificial microarray data and benchmark studies. The results indicate that the Support Vector Regression is the most robust to outliers and that Kernel is the worst normalization technique, while no practical differences were observed between Loess, Splines and Wavelets.In face of our results, the Support Vector Regression is favored for microarray normalization due to its superiority when compared to the other methods for its robustness in estimating the normalization curve.DNA microarray technology is a powerful approach for genomic research, playing an increasingly important role in biomedical research. This technology yields simultaneous measurement of gene expression levels of thousands of genes, allowing the analysis of differential gene expression patterns under different conditions such as disease (pathological) states or treatment with different chemotherapeutic drugs. Due to small differences in RNA quantities and fluctuations generated by the technique, the intensity levels may vary from one replicate to the other due to effects which are unrelated to the genes, requiring data normalization before they can be compared.Therefore, normalization is an important step for microarray data analysis. The purpose of data normalization is to minimize the effects caused by technical variations and, as a result, allow the data to be comparable in order to find actual biological changes. Several normalization approaches have been proposed, most of which derive from studies using two-color spotted microarrays. Some authors proposed normalization of the hybridization intensity ratios; others use global, linear methods, while others use local, non-linear methods. Several authors sugg
Multivariate gene expression analysis reveals functional connectivity changes between normal/tumoral prostates
André Fujita, Luciana Gomes, Jo?o Sato, Rui Yamaguchi, Carlos Thomaz, Mari Sogayar, Satoru Miyano
BMC Systems Biology , 2008, DOI: 10.1186/1752-0509-2-106
Abstract: Principal Component Analysis (PCA) combined with the Maximum-entropy Linear Discriminant Analysis (MLDA) were applied in order to identify genes with the most discriminative information between normal and tumoral prostatic tissues. Data analysis was carried out using three different approaches, namely: (i) differences in gene expression levels between normal and tumoral conditions from an univariate point of view; (ii) in a multivariate fashion using MLDA; and (iii) with a dependence network approach. Our results show that malignant transformation in the prostatic tissue is more related to functional connectivity changes in their dependence networks than to differential gene expression. The MYLK, KLK2, KLK3, HAN11, LTF, CSRP1 and TGM4 genes presented significant changes in their functional connectivity between normal and tumoral conditions and were also classified as the top seven most informative genes for the prostate cancer genesis process by our discriminant analysis. Moreover, among the identified genes we found classically known biomarkers and genes which are closely related to tumoral prostate, such as KLK3 and KLK2 and several other potential ones.We have demonstrated that changes in functional connectivity may be implicit in the biological process which renders some genes more informative to discriminate between normal and tumoral conditions. Using the proposed method, namely, MLDA, in order to analyze the multivariate characteristic of genes, it was possible to capture the changes in dependence networks which are related to cell transformation.Cancer is one of the main public health problems in the United States and worldwide [1]. Among the diverse types of neoplasia, prostate cancer is the third most common cancer in the World [2], being ranked as the second leading cause of death in men, the first being lung cancer [1]. Its incidence and mortality varies in different parts of the World, being highest in Western countries, mainly among Africans [3].With t
Aproximación a las modas administrativas desde algunos conceptos sociológicos: El caso de la reingeniería
Mario-Arévalo,Andrés; Rodríguez-Romero,Carlos Alberto;
Innovar , 2011,
Abstract: administrative fads, as contemporary theoretical developments of administration, have been characterized by being temporary and responding to the needs of the market economy, which seeks solutions in administration in order to resolve the crises in which they have been immersed in recent years. this article sets out to analyze reengineering, as one of the most representative developments of the phenomenon of administrative fads, understanding the context in which it arose, its main characteristics and the reasons for their particular names. the aim is to analyze them in the light of certain proposals that have originated in other disciplines such as 'blackmail of the enlightenment' and its critical ontology in the subject-organization interrelationship. these developments have moved away from contributions from other branches of knowledge such as psychology, sociology, anthropology or political science, among others, in the framework of a recognition of the complexity of organizations, and thereby vindicate the central role that the human being must occupy in organizations, and which has made it difficult for the management of organizations to serve as the backbone for growth and socioeconomic development.
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