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Search Results: 1 - 10 of 62745 matches for " Heleno Rodrigues; Silva "
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Religi?o e uso de drogas por adolescentes
Dalgalarrondo, Paulo;Soldera, Meire Aparecida;Corrêa Filho, Heleno Rodrigues;Silva, Cleide Aparecida M;
Revista Brasileira de Psiquiatria , 2004, DOI: 10.1590/S1516-44462004000200004
Abstract: introduction: many international studies show that religion is an important dimension modulating the use of alcohol and drugs by adolescents. objectives: to determine which religious variables are associated to frequent or heavy use of alcohol, tobacco and drugs among adolescents in intermediate and high schools in campinas, brazil. methods: a cross-sectional study using a self-report anonymous questionnaire was administered to 2.287 students from a convenience sample of seven schools: five from central areas (two public and three private schools) and two public schools from the outskirts of the city, in 1998. the study analyzes data regarding the use of alcohol, tobacco, medicines, solvents, marijuana, cocaine and ecstasy. the religious variables included in the regression analysis were: religious affiliation, church attendance, self-assessed religiousness, and religious education in childhood. for the substances, nicotine, alcohol, marijuana, cocaine, ecstasy and "abuse of medicines" a logistic regression analysis for dicotomic answer was applied. results: the heavy use of at least one drug during the last month was more frequent among students that did not have a religious education during childhood. the use in the last month of cocaine, ecstasy and (abuse of) medicines was more frequent among those students that had no religion (cocaine and medicines) and that did not have a religious education during childhood (ecstasy and medicines). conclusions: this study is consistent with previous investigations demonstrating a strong influence of religious variables over the use of drugs among adolescents. interesting, it was found that no or weaker religious education during childhood was markedly associated with significant more use of drugs during adolescence.
Uso pesado de álcool por estudantes dos ensinos fundamental e médio de escolas centrais e periféricas de Campinas (SP): prevalência e fatores associados
Soldera, Meire;Dalgalarrondo, Paulo;Corrêa Filho, Heleno Rodrigues;Silva, Cleide Aparecida M;
Revista Brasileira de Psiquiatria , 2004, DOI: 10.1590/S1516-44462004000300007
Abstract: it is important to identify factors related to heavy alcohol use among adolescents, as this allows interventions aimed at reducing risk behavior and possible increasing harmful use of alcohol. objectives: to determine the prevalence of heavy alcohol use and investigate the influence of sociodemographic, cultural and psychopathological variables on alcohol use among elementary and high-school students of public and private schools in campinas, brazil. methods: this is a cross-sectional study using an intentional sampling technique. the questionnaire used was based on the cebrid (brazilian information center on psychotropic drugs) questionnaire and filled out anonymously by the subjects. the sample consisted of 2,287 elementary and high-school students from public and private schools in campinas, brazil, during the year of 1998. according world health organization criteria (who, 1981), alcohol use for 20 days or more in the 30 days prior to the study was considered heavy alcohol use. the "polytomic logistic regression - generalized logits model" was applied to identify the factors that influenced heavy alcohol use. results: heavy alcohol use was seen in 11.9% of the sample, being more frequent among students at the inner-city public school belonging to socioeconomic classes a and b, who held down jobs and attended school in the afternoons. these students felt that their families did not understand or support them and also showed lower academic performance at school. conclusions: the present study indicates that factors such as availability of funds, work , delayed schooling performance and unfavorable personal and family situations were related to heavy alcohol use among adolescents.
Uso de drogas psicotrópicas por estudantes: prevalência e fatores sociais associados
Soldera,Meire; Dalgalarrondo,Paulo; Corrêa Filho,Heleno Rodrigues; Silva,Cleide A M;
Revista de Saúde Pública , 2004, DOI: 10.1590/S0034-89102004000200018
Abstract: objective: to determine the prevalence of the heavy use of drugs among elementary and high school students in a sample of public and private schools, and to identify associated demographic, psychological, cultural and social factors. methods: this report describes a cross-sectional study using an intention-type sampling technique that compared public schools in central and peripheral areas and private schools. an anonymous self-administered questionnaire was applied. the sample consisted of 2,287 elementary and high school students in the city of campinas in 1998. heavy use of drugs was defined as the use of drugs on 20 or more days during the 30 days preceding the survey (who, 1981). for the statistical analysis, polytomic logistic regression analysis (logit model) was utilized to identify factors that influenced this manner of using drugs. results: heavy use of legal and illegal drugs was found as follows: alcohol (11.9%), tobacco (11.7%), marijuana (4.4%), solvents (1.8%), cocaine (1.4%), medications (1.1%) and ecstasy (0.7%). the heavy use of drugs was greatest among students at the city-center public school who had daytime jobs and studied in the evenings. these students were in the a and b socioeconomic classes and had had little religious education during childhood. conclusions: greater availability of cash and specific socialization patterns were identified as factors associated with the heavy use of drugs among students.
Uso de drogas psicotrópicas por estudantes: prevalência e fatores sociais associados
Soldera Meire,Dalgalarrondo Paulo,Corrêa Filho Heleno Rodrigues,Silva Cleide A M
Revista de Saúde Pública , 2004,
Abstract: OBJETIVO: Determinar a prevalência do uso pesado de drogas por estudantes de primeiro e segundo graus em uma amostra de escolas públicas e particulares, e identificar fatores demográficos, psicológicos e socioculturais associados. MéTODOS: Trata-se de um estudo transversal com uma técnica de amostragem do tipo intencional comparando-se escolas públicas de áreas periféricas e centrais e escolas particulares. Foi utilizado um questionário an nimo de autopreenchimento. A amostra foi constituída por 2.287 estudantes de primeiro e segundo graus da cidade de Campinas, SP, no ano de 1998. Considerou-se uso pesado, o uso de drogas em 20 dias ou mais nos 30 dias que antecederam a pesquisa. Para análise estatística, utilizou-se a análise de regress o logística polit mica - modelo logito, visando identificar fatores que influenciem este modo de usar drogas. RESULTADOS: O uso pesado de drogas lícitas e ilícitas foi de: álcool (11,9%), tabaco (11,7%), maconha (4,4%), solventes (1,8%), cocaína (1,4%), medicamentos (1,1%), ecstasy (0,7%). O uso pesado foi maior entre os estudantes da escola pública central, do período noturno, que trabalhavam, pertencentes aos níveis socioecon micos A e B, e cuja educa o religiosa na infancia foi pouco intensa. CONCLUS ES: Maior disponibilidade de dinheiro e padr es específicos de socializa o foram identificados como fatores associados ao uso pesado de drogas em estudantes.
Problemas com o uso de programa??o linear com posterior arredondamento da solu??o ótima, em regula??o florestal
Silva, Gilson Fernandes da;Leite, Helio Garcia;Silva, Márcio Lopes da;Rodrigues, Flávio Lopes;Santos, Heleno do Nascimento;
Revista árvore , 2003, DOI: 10.1590/S0100-67622003000500010
Abstract: the main objective of this work was to evaluate, through integer programming, the consequences of using linear programming with post rounding out of the responses, with emphasis on even-aged forest regulation. thus, a simplified forest regulation problem was proposed out and solved by model i by means of linear programming, linear programming with post rounding out, and integer programming. it was concluded that the rounding out of responses obtained by the model solved by linear programming led to an unviable solution for the proposed regulation problem. the same did not occur with the integer programming model, which presented a viable, optimal regulation plan, showing that, from a mathematical viewpoint, responses with rounding out of solution using linear programming models should not be adopted.
Metaheurística algoritmo genético para solu??o de problemas de planejamento florestal com restri??es de integridade
Rodrigues, Flávio Lopes;Leite, Helio Garcia;Santos, Heleno do Nascimentos;Souza, Agostinho Lopes de;Silva, Gilson Fernandes da;
Revista árvore , 2004, DOI: 10.1590/S0100-67622004000200010
Abstract: the objectives of this work was to develop and test a genetic algorithm (ga) to solve problems of forest management with integer constraints. ga was tested in five problems containing 93 - 423 decision variables, periodically subject to singularity constraints, minimum and maximum production. the problems had the objective of maximizing the net present value. ga was codified into delphi 5.0 language and the tests were performed in a microcomputer amd k6ii 500 mhz, with ram memory of 64 mb and hard disk of 15gb. the ga performance was evaluated according to the efficacy and efficiency measures. the different values or categories for the ga parameters were tested and compared in relation to their effects on the algorithm efficacy. the selection of the parameters' best configuration was performed by using the l&o test at 1% probability and analyses via descriptive statistics. the parameters' best configuration provided for ga average efficacy was of 94.28%, minimum value equal to 90.01%, maximum value equal to 98.48%, with coefficient of variation of 2.08% of the mathematical optimum, obtained by the exact algorithm branch and bound. as for the larger problem, the efficiency of ga was five times superior to the efficiency of the exact algorithm branch and bound. ga was found to be a quite attractive approach to solve important forest management problems.
Inquérito sobre a prevalência de bócio endêmico no Brasil em escolares de 6 a 14 anos: 1994 a 1996
Corrêa Filho Heleno Rodrigues,Vieira Jo?o Batista Furtado,Silva Yara Simoni Pereira,Coelho Giovanini Evelim
Revista Panamericana de Salud Pública , 2002,
Abstract: Objetivo. Determinar as prevalências estaduais e nacional do bócio endêmico relacionado com a deficiência de iodo em escolares de 6 a 14 anos, com base em dados obtidos no inquérito nacional realizado de 1994 a 1996 no Brasil. Materiais. Em 428 municípios de todos os estados brasileiros, o exame de inspe o-palpa o foi utilizado para coletar dados de 178 774 escolares de 6 a 14 anos. Uma sub-amostra foi selecionada para determina o do conteúdo de iodo na urina e sal culinário residencial. Resultados. Em compara o com dados de 1975, último inquérito antes deste aqui relatado, constatou-se queda de 86% na prevalência mediana de bócio graus I e II (de 12 para 1%). Em 21% dos municípios, a prevalência observada foi zero. Das 16 803 amostras urinárias para dosagem de iodo foi possível recuperar 7 702 e associá-las às respectivas fichas clínicas individuais (perda de 54%). A mediana de iodo urinário foi de 14,0 mig/dL e n o se verificou correla o significativa com os dados clínicos de bócio. Os estados do Acre, Amapá e Tocantins tiveram mediana populacional de excre o urinária de iodo igual ou abaixo de 9,0 mig/dL. Em três municípios a dosagem urinária de iodo foi gravemente baixa (< 2,5 mig/dL) em todas as amostras: Paran (Tocantins); Concei o (Paraíba); e Nova Roma (Goiás). O sal consumido nas residências (458 amostras coletadas) apresentou sub-dosagem de iodo suplementar, com 50% abaixo de 20 mg/kg ou 20 ppm. Em 7% das amostras, a dosagens de iodo foi menor do que 10 mg/kg de sal, inclusive em estados produtores de sal, como o Rio Grande do Norte. Conclus es. Há evidências de expans o da área endêmica de bócio para as regi es de abertura de fronteira agrícola, com exposi o de crian as a dieta doméstica carente de iodo veiculado pelo sal. Esta carência associou-se com o aumento de risco para bócio (OR = 1,85; 1,68 < OR < 2,03; IC 95% Cornfield) nas áreas onde a ioda o do sal consumido foi deficiente (< 10 mg/kg).
Inquérito sobre a prevalência de bócio endêmico no Brasil em escolares de 6 a 14 anos: 1994 a 1996
Corrêa Filho,Heleno Rodrigues; Vieira,Jo?o Batista Furtado; Silva,Yara Simoni Pereira; Coelho,Giovanini Evelim; Cavalcante,Felicidade dos Anjos Carvalho; Pereira,Maria da Paz Luna;
Revista Panamericana de Salud Pública , 2002, DOI: 10.1590/S1020-49892002001100005
Abstract: objective. to determine the national and state-level prevalence of endemic goiter associated with iodine deficiency in schoolchildren between 6 and 14 years of age in brazil, based on data from a national survey carried out from 1994 to 1996. materials. thyroid inspection and palpation were performed on 178 774 schoolchildren between 6 and 14 years of age, in all the states of brazil. a subsample was selected to measure the iodine content in their urine as well as the iodine content of the table salt used for cooking in their homes. results. the last survey before this one was carried out in 1975. we found an 86% decrease in the median prevalence of grade 1 and grade 2 goiter, from 12% to 1%. in 21% of the municipalities, the observed prevalence was zero. from the 16 803 urine samples collected for iodine measurement, 7 702 were matched with the corresponding clinical record (a loss of 54%). the median urinary iodine level was 14.0 mg/dl, and without a significant correlation with the clinical data on goiter. the median iodine excretion level for the population in the states of acre, amapá, and tocantins was equal to or below 9.0 mg/dl. in three municipalities, urinary iodine was below 2.5 mg/dl in all the samples: paran? (in the state of tocantins), concei??o (paraíba), and nova roma (goiás). the supplementary iodine found in the salt collected from households (458 samples collected) was below recommended levels, with 50% of them below 20 mg/kg (20 ppm). in 7% of the samples, the level of iodine was below 10 mg/kg of salt, even in salt-producing states such as rio grande do norte. conclusions. there is evidence that endemic goiter is expanding to parts of brazil that more recently have been opened up for agriculture, with children in those areas being exposed to low levels of supplementary iodine in the salt used for cooking. we found an increased risk of goiter in areas with deficient iodine supplementation (< 10 mg/kg) (odds ratio = 1.85; cornfield 95% confidence
O Fator Acidentário Previdenciário como instrumento epidemiológico de controle de riscos do trabalho
Corrêa Filho, Heleno Rodrigues;
Revista Brasileira de Epidemiologia , 2005, DOI: 10.1590/S1415-790X2005000400012
Abstract: this report discusses the validity of a brazilian ministry decree that establishes standards for calculating a multiplying factor for accidents and social security. the index estimates the frequency, severity and costs to be accounted for in tax calculation. it multiplies tax rates due to work risks and may reduce by up to 50% the taxes due by companies that apply efficient collective methods for disease prevention. the method is analyzed for its consistency in selecting groups of morbidity used as a mean to build frequency, severity and cost burden vectors. the validity of the application of epidemiologic concepts to the economic activity that generates the specific morbidity is also assessed. the discussion addresses the antagonism between the concepts of traditional morbidity lists and the mobile epidemiologic criteria usually adopted to solve conflicts on the existence of a causal link amongst diseases, lesions, accidents and means of production. the floating groups of morbidity that reach significant 99% confidence intervals for epidemiologic risks above the null value _ 1.0 _ are supported. the conclusion is that the method is in accordance with epidemiologic requirements, as long as a systematic review panel assesses aspects of sensitivity and specificity. a warning is presented not to rely solely on methods as unilateral means of social action for evaluating, controlling and preventing the diseases associated with the means of production that are inherent to our social development. methods are instruments that ought to be considered in decision-making and in the desired political action.
Vigilancia das doen as cr nicas e ocupacionais: como passar das propostas às a es?
Heleno Rodrigues Corrêa Filho
Saúde e Sociedade , 1995, DOI: 10.1590/s0104-12901995000100021
Abstract:
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