Douglas Leite - Academia.edu (original) (raw)
Papers by Douglas Leite
1Universidade Federal de Mato Grosso UFMT / Dep. de Ciência da Computação ... 2Centro Federal d... more 1Universidade Federal de Mato Grosso UFMT / Dep. de Ciência da Computação ... 2Centro Federal de Educação Tecnológica de Mato Grosso CEFET/MT ... 3Universidade de Cuiabá UNIC / Faculdade de Ciência e Tecnologia ... 1eunice_nunes@yahoo.com.br, ...
Jornal Brasileiro de Nefrologia, 2014
Chronic renal failure is a disease which prevalence has been increasing in Brazil. Hemodialysis i... more Chronic renal failure is a disease which prevalence has been increasing in Brazil. Hemodialysis is their primary therapeutic modality and arterio-venous fistula their preferential access. Nevertheless, many patients require the use of double-lumen catheters, either as permanent or temporary access. Vascular complications related to this procedure may occur, and their best method of non-invasive analysis is ultrasound analysis. To analyze the complications by the use of double-lumen catheter in patients with chronic kidney disease on hemodialysis, at "Santa Casa de Misericordia de Ponta Grossa" hospital, through eco-Doppler exam. Observational research, analytical, case-control type, to obtain data we used TASY®, interview, physical exam and imaging (eco-Doppler). None of the variables was significant isolated as a predictor of vascular impact in eco-Doppler, which detected changes in 31.25% of the cases. Physical exam showed poor accuracy compared to Doppler capacity to detect complications (K = -0.123). We conclude that the vascular effects of the use of CDL are frequent (31.25%). Manifesting itself in the form of occlusions with/without recanalization and stenoses. This leads us to required a prior analysis of the insertion site with Doppler, in order to avoid unnecessary procedures and possible complications.
Journal of the Brazilian Computer Society, 2012
The Service Component Architecture (SCA) makes it possible to combine existing and new services b... more The Service Component Architecture (SCA) makes it possible to combine existing and new services based on a variety of technologies with components built using a component-based development approach. However, when asynchronous service compositions are executed, one or more errors can occur, possibly at the same time, affecting the dependability of the composition. To guarantee that the composition succeeds or at least fails in a controlled manner, fault tolerance mechanisms must be employed. In this paper, we propose a novel exception handling model that targets the needs of dependable SCA applications. The model is applicable to service-oriented systems and allows the creation of fault-tolerant asynchronous service compositions. The EH-SCA framework instantiates the proposed model as an extension of the Apache Tuscany SCA infrastructure. Developers can apply this instantiation of the model to both new and existing applications by using a simple and flexible aspect-oriented programming model. Finally, a case study of the EH-SCA framework shows how it can be used to build dependable distributed applications.
2011 5th Latin-American Symposium on Dependable Computing, 2011
Page 1. Exception Handling for Service Component Architectures Douglas Siqueira Leite Institute o... more Page 1. Exception Handling for Service Component Architectures Douglas Siqueira Leite Institute of Computing University of Campinas Campinas-SP, Brazil dougsleite@apache.org Cecılia Mary F. Rubira Institute of Computing ...
1Universidade Federal de Mato Grosso UFMT / Dep. de Ciência da Computação ... 2Centro Federal d... more 1Universidade Federal de Mato Grosso UFMT / Dep. de Ciência da Computação ... 2Centro Federal de Educação Tecnológica de Mato Grosso CEFET/MT ... 3Universidade de Cuiabá UNIC / Faculdade de Ciência e Tecnologia ... 1eunice_nunes@yahoo.com.br, ...
Jornal Brasileiro de Nefrologia, 2014
Chronic renal failure is a disease which prevalence has been increasing in Brazil. Hemodialysis i... more Chronic renal failure is a disease which prevalence has been increasing in Brazil. Hemodialysis is their primary therapeutic modality and arterio-venous fistula their preferential access. Nevertheless, many patients require the use of double-lumen catheters, either as permanent or temporary access. Vascular complications related to this procedure may occur, and their best method of non-invasive analysis is ultrasound analysis. To analyze the complications by the use of double-lumen catheter in patients with chronic kidney disease on hemodialysis, at "Santa Casa de Misericordia de Ponta Grossa" hospital, through eco-Doppler exam. Observational research, analytical, case-control type, to obtain data we used TASY®, interview, physical exam and imaging (eco-Doppler). None of the variables was significant isolated as a predictor of vascular impact in eco-Doppler, which detected changes in 31.25% of the cases. Physical exam showed poor accuracy compared to Doppler capacity to detect complications (K = -0.123). We conclude that the vascular effects of the use of CDL are frequent (31.25%). Manifesting itself in the form of occlusions with/without recanalization and stenoses. This leads us to required a prior analysis of the insertion site with Doppler, in order to avoid unnecessary procedures and possible complications.
Journal of the Brazilian Computer Society, 2012
The Service Component Architecture (SCA) makes it possible to combine existing and new services b... more The Service Component Architecture (SCA) makes it possible to combine existing and new services based on a variety of technologies with components built using a component-based development approach. However, when asynchronous service compositions are executed, one or more errors can occur, possibly at the same time, affecting the dependability of the composition. To guarantee that the composition succeeds or at least fails in a controlled manner, fault tolerance mechanisms must be employed. In this paper, we propose a novel exception handling model that targets the needs of dependable SCA applications. The model is applicable to service-oriented systems and allows the creation of fault-tolerant asynchronous service compositions. The EH-SCA framework instantiates the proposed model as an extension of the Apache Tuscany SCA infrastructure. Developers can apply this instantiation of the model to both new and existing applications by using a simple and flexible aspect-oriented programming model. Finally, a case study of the EH-SCA framework shows how it can be used to build dependable distributed applications.
2011 5th Latin-American Symposium on Dependable Computing, 2011
Page 1. Exception Handling for Service Component Architectures Douglas Siqueira Leite Institute o... more Page 1. Exception Handling for Service Component Architectures Douglas Siqueira Leite Institute of Computing University of Campinas Campinas-SP, Brazil dougsleite@apache.org Cecılia Mary F. Rubira Institute of Computing ...
1Universidade Federal de Mato Grosso UFMT / Dep. de Ciência da Computação ... 2Centro Federal d... more 1Universidade Federal de Mato Grosso UFMT / Dep. de Ciência da Computação ... 2Centro Federal de Educação Tecnológica de Mato Grosso CEFET/MT ... 3Universidade de Cuiabá UNIC / Faculdade de Ciência e Tecnologia ... 1eunice_nunes@yahoo.com.br, ...
Jornal Brasileiro de Nefrologia, 2014
Chronic renal failure is a disease which prevalence has been increasing in Brazil. Hemodialysis i... more Chronic renal failure is a disease which prevalence has been increasing in Brazil. Hemodialysis is their primary therapeutic modality and arterio-venous fistula their preferential access. Nevertheless, many patients require the use of double-lumen catheters, either as permanent or temporary access. Vascular complications related to this procedure may occur, and their best method of non-invasive analysis is ultrasound analysis. To analyze the complications by the use of double-lumen catheter in patients with chronic kidney disease on hemodialysis, at "Santa Casa de Misericordia de Ponta Grossa" hospital, through eco-Doppler exam. Observational research, analytical, case-control type, to obtain data we used TASY®, interview, physical exam and imaging (eco-Doppler). None of the variables was significant isolated as a predictor of vascular impact in eco-Doppler, which detected changes in 31.25% of the cases. Physical exam showed poor accuracy compared to Doppler capacity to detect complications (K = -0.123). We conclude that the vascular effects of the use of CDL are frequent (31.25%). Manifesting itself in the form of occlusions with/without recanalization and stenoses. This leads us to required a prior analysis of the insertion site with Doppler, in order to avoid unnecessary procedures and possible complications.
Journal of the Brazilian Computer Society, 2012
The Service Component Architecture (SCA) makes it possible to combine existing and new services b... more The Service Component Architecture (SCA) makes it possible to combine existing and new services based on a variety of technologies with components built using a component-based development approach. However, when asynchronous service compositions are executed, one or more errors can occur, possibly at the same time, affecting the dependability of the composition. To guarantee that the composition succeeds or at least fails in a controlled manner, fault tolerance mechanisms must be employed. In this paper, we propose a novel exception handling model that targets the needs of dependable SCA applications. The model is applicable to service-oriented systems and allows the creation of fault-tolerant asynchronous service compositions. The EH-SCA framework instantiates the proposed model as an extension of the Apache Tuscany SCA infrastructure. Developers can apply this instantiation of the model to both new and existing applications by using a simple and flexible aspect-oriented programming model. Finally, a case study of the EH-SCA framework shows how it can be used to build dependable distributed applications.
2011 5th Latin-American Symposium on Dependable Computing, 2011
Page 1. Exception Handling for Service Component Architectures Douglas Siqueira Leite Institute o... more Page 1. Exception Handling for Service Component Architectures Douglas Siqueira Leite Institute of Computing University of Campinas Campinas-SP, Brazil dougsleite@apache.org Cecılia Mary F. Rubira Institute of Computing ...
1Universidade Federal de Mato Grosso UFMT / Dep. de Ciência da Computação ... 2Centro Federal d... more 1Universidade Federal de Mato Grosso UFMT / Dep. de Ciência da Computação ... 2Centro Federal de Educação Tecnológica de Mato Grosso CEFET/MT ... 3Universidade de Cuiabá UNIC / Faculdade de Ciência e Tecnologia ... 1eunice_nunes@yahoo.com.br, ...
Jornal Brasileiro de Nefrologia, 2014
Chronic renal failure is a disease which prevalence has been increasing in Brazil. Hemodialysis i... more Chronic renal failure is a disease which prevalence has been increasing in Brazil. Hemodialysis is their primary therapeutic modality and arterio-venous fistula their preferential access. Nevertheless, many patients require the use of double-lumen catheters, either as permanent or temporary access. Vascular complications related to this procedure may occur, and their best method of non-invasive analysis is ultrasound analysis. To analyze the complications by the use of double-lumen catheter in patients with chronic kidney disease on hemodialysis, at "Santa Casa de Misericordia de Ponta Grossa" hospital, through eco-Doppler exam. Observational research, analytical, case-control type, to obtain data we used TASY®, interview, physical exam and imaging (eco-Doppler). None of the variables was significant isolated as a predictor of vascular impact in eco-Doppler, which detected changes in 31.25% of the cases. Physical exam showed poor accuracy compared to Doppler capacity to detect complications (K = -0.123). We conclude that the vascular effects of the use of CDL are frequent (31.25%). Manifesting itself in the form of occlusions with/without recanalization and stenoses. This leads us to required a prior analysis of the insertion site with Doppler, in order to avoid unnecessary procedures and possible complications.
Journal of the Brazilian Computer Society, 2012
The Service Component Architecture (SCA) makes it possible to combine existing and new services b... more The Service Component Architecture (SCA) makes it possible to combine existing and new services based on a variety of technologies with components built using a component-based development approach. However, when asynchronous service compositions are executed, one or more errors can occur, possibly at the same time, affecting the dependability of the composition. To guarantee that the composition succeeds or at least fails in a controlled manner, fault tolerance mechanisms must be employed. In this paper, we propose a novel exception handling model that targets the needs of dependable SCA applications. The model is applicable to service-oriented systems and allows the creation of fault-tolerant asynchronous service compositions. The EH-SCA framework instantiates the proposed model as an extension of the Apache Tuscany SCA infrastructure. Developers can apply this instantiation of the model to both new and existing applications by using a simple and flexible aspect-oriented programming model. Finally, a case study of the EH-SCA framework shows how it can be used to build dependable distributed applications.
2011 5th Latin-American Symposium on Dependable Computing, 2011
Page 1. Exception Handling for Service Component Architectures Douglas Siqueira Leite Institute o... more Page 1. Exception Handling for Service Component Architectures Douglas Siqueira Leite Institute of Computing University of Campinas Campinas-SP, Brazil dougsleite@apache.org Cecılia Mary F. Rubira Institute of Computing ...