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Search Results: 1 - 10 of 26799 matches for " Renato;Alves "
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Comparing SLIM, SPAR-H and Bayesian Network Methodologies  [PDF]
Eduardo Calixto, Gilson Brito Alves Lima, Paulo Renato Alves Firmino
Open Journal of Safety Science and Technology (OJSST) , 2013, DOI: 10.4236/ojsst.2013.32004
Abstract:

Human factors always affect maintenance performance, and in some cases, it’s critical to systems availability and reliability. Despite such importance, in so many cases, there’s no human reliability method applied to analyze maintenance tasks in order to understand better human factors influence in maintenance performance. There are several human analysis methodologies and regarding human factors, SLIM (Successes Likelihood Methods), SPAR-H (Standardized Plant Analysis Risk-Human Reliability Analysis Method) and Bayesian Net take into account such factors and may be a good approach to minimize human error. In order to propose a human reliability methodology to analyze maintenance tasks taking into account human factors, a case study about turbine star up tasks will be carried out. Therefore, different human reliability methods will be performed based on specialist opinion. Finally, the human error probability as well as drawbacks and advantages from different methods will be discussed to get a final conclusion.

Evaluation of water quality of an urban stream in southeastern Brazil using Chironomidae larvae (Insecta: Diptera)
Oliveira, Vívian;Martins, Renato;Alves, Roberto;
Neotropical Entomology , 2010, DOI: 10.1590/S1519-566X2010000600004
Abstract: in order to estimate the water quality of s?o pedro stream, through distribution and composition of chironomidae larvae present in the sediment four sampling sites were selected. in each sampling site, three sediment samples were collected within a period of twelve months using the petersen (0.0189 m2) and the van veen (0.0518 m2) dredges. samples were washed through a sieve with a 0.21 mm mesh and the collected organisms were sorted in transparent trays, with a light shine being reflected into the tray. the sites located in the greatest urban mesh showed high densities of the genus chironomus and lower values for diversity, uniformity and taxa richness, in relation to sites located in a less urbanized area. a significant difference in density of chironomidae larvae (p = 0.02; h = 5.89) was observed between the sites without domestic sewage effluents (site i) and those with the input of the effluents (sites ii, iii and iv). the chironomidae larvae composition and the physical and chemical parameters were effective as indicators of the environmental alterations in s?o pedro stream.
A century of research: what have we learned about the interaction of Trypanosoma cruzi with host cells?
Alves, Maria Julia Manso;Mortara, Renato Arruda;
Memórias do Instituto Oswaldo Cruz , 2009, DOI: 10.1590/S0074-02762009000900013
Abstract: since the discovery of trypanosoma cruzi and the brilliant description of the then-referred to "new tripanosomiasis" by carlos chagas 100 years ago, a great deal of scientific effort and curiosity has been devoted to understanding how this parasite invades and colonises mammalian host cells. this is a key step in the survival of the parasite within the vertebrate host, and although much has been learned over this century, differences in strains or isolates used by different laboratories may have led to conclusions that are not as universal as originally interpreted. molecular genotyping of the cl-brener clone confirmed a genetic heterogeneity in the parasite that had been detected previously by other techniques, including zymodeme or schizodeme (kdna) analysis. t. cruzi can be grouped into at least two major phylogenetic lineages: t. cruzi i, mostly associated with the sylvatic cycle and t. cruzi ii, linked to human disease; however, a third lineage, t. cruziiii, has also been proposed. hybrid isolates, such as the cl-brener clone, which was chosen for sequencing the genome of the parasite (elias et al. 2005, el sayed et al. 2005a), have also been identified. the parasite must be able to invade cells in the mammalian host, and many studies have implicated the flagellated trypomastigotes as the main actor in this process. several surface components of parasites and some of the host cell receptors with which they interact have been described. herein, we have attempted to identify milestones in the history of understanding t. cruzi- host cell interactions. different infective forms of t. cruzi have displayed unexpected requirements for the parasite to attach to the host cell, enter it, and translocate between the parasitophorous vacuole to its final cytoplasmic destination. it is noteworthy that some of the mechanisms originally proposed to be broad in function turned out not to be universal, and multiple interactions involving different repertoires of molecules seem t
Occurrence of Naididae (Annelida: Oligochaeta) from three gastropod species in irrigation fields in southeastern Brazil
Martins, Renato Tavares;Alves, Roberto da Gama;
Biota Neotropica , 2008, DOI: 10.1590/S1676-06032008000300023
Abstract: in the present study we report the occurrence of three naididae species from three gastropod mollusk species. the species dero (dero) righii was found from mollusks of the genus biomphalaria. nais communis was found from biomphalaria sp. and aplexa rivalis. chaetogaster limnaei was found from biomphalaria sp., aplexa rivalis and lymnaea columella. in brazil, previous studies have reported the occurrence of chaetogaster limnaei from biomphalaria solely, while nais communis have been found from pomacea bridgesii and dero (dero) righii in the sediment of aquatic habitats in mato grosso do sul. our results indicate that, due to their locomotion, naidids are capable of colonizing different substrates in aquatic environments.
The Brazilian System of Innovation in Biotechnology: a Preliminary Study The Brazilian System of Innovation in Biotechnology: a Preliminary Study The Brazilian System of Innovation in Biotechnology: a Preliminary Study
Renato Marques,Cesar Gon?alves Neto
Journal of technology management & innovation , 2007,
Abstract: In order to prepare a preliminary analysis of the Brazilian National Innovation System in Biotechnology (NISB), we conducted several interviews and used e-mail questionnaires with different kinds of actors in the system, i.e. university teachers, financing agents, businessmen, etc. The study suggests that Brazil has a few important strong points, like the scientific tradition in biotechnology, the financing to basic research and the strength of the agricultural sector in the last decade. But there is still a long way to go; sector regulation, the start up companies financing and the cultural aspect of business aversion by researchers seem to be the main obstacles for the country to become a significant player in this sector Con el objetivo de preparar un análisis preliminar del Sistema Nacional de Innovación en Biotecnología de Brasil (NISB), se llevaron a cabo numerosas entrevistas y se emplearon cuestionarios enviados por correo electrónico a los diferentes actores en el sistema, por ejemplo profesores universitarios, agentes financieros, ejecutivos, etc. El estudio sugiere que Brasil tiene unos pocos puntos fuertes importantes, tales como la tradición científica en Biotecnología, el financiamiento existente para el desarrollo de investigación básica y la fuerza del sector agrícola en la última década. Pero aún hay mucho por hacer; regulación del sector, el financiamiento de las compa ías Start up In order to prepare a preliminary analysis of the Brazilian National Innovation System in Biotechnology (NISB), we conducted several interviews and used e-mail questionnaires with different kinds of actors in the system, i.e. university teachers, financing agents, businessmen, etc. The study suggests that Brazil has a few important strong points, like the scientific tradition in biotechnology, the financing to basic research and the strength of the agricultural sector in the last decade. But there is still a long way to go; sector regulation, the start up companies financing and the cultural aspect of business aversion by researchers seem to be the main obstacles for the country to become a significant player in this sector
The Brazilian System of Innovation in Biotechnology: a Preliminary Study
Renato Marques,Cesar Gon?alves Neto
Journal of technology management & innovation , 2007,
Abstract: In order to prepare a preliminary analysis of the Brazilian National Innovation System in Biotechnology (NISB), we conducted several interviews and used e-mail questionnaires with different kinds of actors in the system, i.e. university teachers, financing agents, businessmen, etc.The study suggests that Brazil has a few important strong points, like the scientific tradition in biotechnology, the financing to basic research and the strength of the agricultural sector in the last decade. But there is still a long way to go; sector regulation, the start up companies financing and the cultural aspect of business aversion by researchers seem to be the main obstacles for the country to become a significant player in this sector
Interdisciplinarity and Teacher Education: The Teacher’s Training of the Secondary School in Rio de Janeiro—Brazil  [PDF]
Antonio Augusto Fidalgo-Neto, Renato Matos Lopes, José Leopoldo Cerqueira Magalh?es, Max Fonseca Pierini, Luiz Anastácio Alves
Creative Education (CE) , 2014, DOI: 10.4236/ce.2014.54035
Abstract:

This paper investigates the teacher’s perception and knowledge about interdisciplinarity on public secondary school in Rio de Janeiro. Among the participants, 101 teachers completed the questionnaire on the subject investigated. All data about the perceptions of teachers were faced with lesson plans prepared by teachers who reported having strong knowledge on interdisciplinary practice. Our results suggest that there is a lack of support in schools, and competence of teachers to develop interdisciplinary approaches in the classroom. In this context, we suggest the use of methodologies such as Problem-Based Learning in teacher training courses in Brazil, as well as encouraging a continuing education of professionals through postgraduate programs.

Mapping Knowledge Produced on Problem-Based Learning between 1945 and 2014: A Bibliometric Analysis  [PDF]
Luis Antonio de Pinho, Fábio Batista Mota, Mariza Velloso Fernandez Conde, Luiz Anastácio Alves, Renato Matos Lopes
Creative Education (CE) , 2015, DOI: 10.4236/ce.2015.66057
Abstract: Problem-based learning (PBL) has been systematized for over forty years. However, there is still a lack of studies that seek to visualize the evolution of scientific literature on the subject. This paper seeks to fill this gap through the development of a bibliometric analysis by carrying out a data search on the Web of Science? database and subsequently transferring the acquired data for treatment to the VantagePoint? software package. The data indicate that research on PBL shows a strong progression since the end of the twentieth century, with a high volume of the most impacting studies being carried out by a group of researchers who are currently linked to or used to be connected to the Maastricht University. As a result of these studies, a geographical (from North America and Europe to Asia) and academic (from research in medical education to other biomedical and engineering areas) spread of scientific production regarding this teaching methodology has arisen.
Incidência de les?es na prática do rúgbi amador no Brasil
Alves, Luciane Machado;Soares, Renato Paranhos;Liebano, Richard Eloin;
Fisioterapia e Pesquisa , 2008, DOI: 10.1590/S1809-29502008000200004
Abstract: this study aimed at estimating the incidence of traumatic injuries in the practice of amateur rugby in brazil. the sample consisted of 42 male, 18 to 30 year-old rugby amateur athletes from two different s?o paulo teams. a questionnaire (by means of interview) was applied to each player inquiring on injuries suffered during and/or after every match (and training) his team played along five months of 2006. an injury was defined as any pain or physical impairment sustained by a player during or immediately after a rugby match or training. data from volunteers' answers were statistically analysed, and significance level set at p < 0.05. the total incidence of injuries was 574.16 per 1,000 match hours. injuries were predominant in lower limbs. tackling was the major cause of injuries. the second half was the period when most injuries occurred. forwards were more often injured than backs. the incidence of traumatic injuries in rugby in brazil were extremely high when compared to the injury incidence found by studies made in countries where rugby is usually practised.
M?es de recém-nascidos hospitalizados: em/entre círculos no processo de amamenta??o
Souza, Kleyde Ventura de;Tesin, Renato Rissato;Alves, Valdecyr Herdy;
Acta Paulista de Enfermagem , 2010, DOI: 10.1590/S0103-21002010000500004
Abstract: objective: to describe the process of breastfeeding of mothers with newborns (nb) hospitalized in a neonatal unit. methods: this is a qualitative approach study, conducted in a maternity hospital located in the central region of curitiba/pr, from april to may 2007. were interviewed ten mothers of infants hospitalized. data were collected through interviews and subjected to content analysis. results: was identified the following thematic unit: the process of breastfeeding of mothers with infants hospitalized and the paths of vicious and virtuous circles. the elements of the "vicious circle" were related to attendance/health actions; the elements of the "virtuous circle" were related to strengthening the role of women, importance and appreciation of context and, social network. conclusion: considering the various dimensions that constitute the process of breastfeeding, it is very urgent the incorporation of practices that reinforce the principle and the meaning of integral healthcare.
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