Carlos Toledo - Academia.edu (original) (raw)

Papers by Carlos Toledo

Computacion Y Sistemas Vol 12 No 002, Sep 10, 2011

The objective of this work consists in the analysis of reliability in process plants in order to ... more The objective of this work consists in the analysis of reliability in process plants in order to manage the failure risks and avoid them considering the probability of failure among other important criteria. The preventive maintenance is an important function for the better operation of any enterprise; we propose the ranking of process equipment according with their criticality for the operation plant to get a good preventive maintenance planning. The subjacent hypothesis is that decision makers should recognize that preventive maintenance planning does not have a single criterion as for example, costs or time, but are multicriteria by nature. To show how this methodology functions, naphtha and intermediate distillates Hidrodesulfuration Plant is used as a case study. The obtained results are the ranking of the process equipment; besides the parametric study that shows: the lower the budget assigned to preventive maintenance, the bigger the economic loss.

Aids, 2009

Men who have sex with men are at high risk for HIV infection. Here we report the results of the f... more Men who have sex with men are at high risk for HIV infection. Here we report the results of the first assessment of HIV prevalence and risk behaviour in this group in Vientiane, Lao People's Democratic Republic. Between August and September 2007, 540 men were enrolled from venues around Vientiane, using venue-day-time sampling. Men of Lao nationality, 15 years and over, reporting oral or anal sex with a man in the previous 6 months were eligible for participation. Demographic and socio-behavioural information was self-collected using hand-held computers. Oral fluid was tested for HIV infection. Logistic regression was used to evaluate risk factors for prevalent HIV infection. The median age of participants was 21 years; the HIV prevalence was 5.6%. Of participants, 39.6% reported exclusive attraction to men and 57.6% reported sex with women. Of those who reported having regular and nonregular sexual partner(s) in the past 3 months, consistent condom use with these partners was 14.4 and 24.2%, respectively. A total of 42.2% self-reported any sexually transmitted infection symptoms and 6.3% had previously been tested for HIV. Suicidal ideation was reported by 17.0%, which was the only variable significantly and independently associated with HIV infection in multivariate analysis. Although the HIV prevalence is low compared with neighbouring countries in the region, men who have sex with men in Lao People's Democratic Republic are at high behavioural risk for HIV infection. To prevent a larger HIV epidemic occurrence and transmission into the broader community, higher coverage of HIV prevention interventions is required.

JAIDS Journal of Acquired Immune Deficiency Syndromes, 2016

We describe the implementation of a pilot project to demonstrate the safety and feasibility of pr... more We describe the implementation of a pilot project to demonstrate the safety and feasibility of providing PrePex circumcision from a mobile clinic. We analyzed available project diary entries and staff meeting minutes to identify challenges encountered. The main challenges identified were (1) daily time constraints because of setting up procedures, (2) transportation logistics for clients when the mobile clinic had moved to a different location, (3) integration and coordination of staff responsibilities, and (4) recruitment for PrePex services in the mobile clinic. The provision of PrePex device circumcision through a mobile clinic was feasible but careful planning and review of operational procedures were needed to resolve the implementation challenges.

Nutricion Hospitalaria Organo Oficial De La Sociedad Espanola De Nutricion Parenteral Y Enteral, 2014

Brazilian Research in Pediatric Dentistry and Integrated Clinic, Aug 16, 2009

Objetivo: Determinar os índices de erro e de discrepância de medições realizadas em modelos ortod... more Objetivo: Determinar os índices de erro e de discrepância de medições realizadas em modelos ortodônticos em acrílico com dentes de estoque em oclusão dentária e maloclusão, utilizando paquímetro digital e avaliar a influência do tempo de experiência profissional na exatidão das medições. Método: Duas medições, com um intervalo mínimo de 30 dias, foram realizadas por 30 alunos de graduação em Odontologia da FO da UFJF, 12 alunos do curso de especialização em Ortodontia da FO da UFJF e 6 professores do curso de especialização em Ortodontia da UFJF. Após a realização das medidas, as médias das dimensões utilizadas no estudo foram obtidas por grupo. A análise estatística utilizada lançou mão do teste t de Student, do ANOVA e do teste de Tukey. Resultados: Erros sistemáticos foram observados na oclusão dentária entre os alunos da especialização e na maloclusão entre os professores da especialização e os alunos da graduação. Discrepâncias de medidas foram observadas na oclusão dentária e na maloclusão entre os alunos da especialização e os da graduação. Erros de medidas foram encontrados na oclusão dentária entre os alunos da graduação e os da especialização. Erros de medidas foram encontrados na maloclusão entre os professores da especialização e os alunos da graduação. Conclusão: O tempo de experiência profissional teve influência significativa nas medições, pois se verificou que o número de erros sistemáticos e discrepâncias de medidas foi maior no grupo de menor experiência, isto é, alunos de graduação, e menor no grupo de maior experiência, grupo de professores da especialização.

Http Dx Doi Org 10 1080 03004430214545, Sep 17, 2010

Computacion Y Sistemas, Dec 1, 2008

... 12 No. 2, 2008, pp 208-215 ISSN 1405-5546 Page 3. 210 Edgar Sevilla Juárez and Carlos Enrique... more ... 12 No. 2, 2008, pp 208-215 ISSN 1405-5546 Page 3. 210 Edgar Sevilla Juárez and Carlos Enrique Escobar Toledo Case Study Selection ... Maximum Economic Loss) Value of Naphtha production P&ID DOW Guide PFD Naphtha market price Naphtha production ...

School Community Journal, 1999

School-age child care (SACC), while relatively new as a social institution (Coleman, Robinson, &a... more School-age child care (SACC), while relatively new as a social institution (Coleman, Robinson, & Rowland, 1993; Seligson, 1991; Theil, McCroskey, & Marquart, 1988), has become an important consideration for working parents whose children would otherwise be left on ...

Aids, 2009

Men who have sex with men are at high risk for HIV infection. Here we report the results of the f... more Men who have sex with men are at high risk for HIV infection. Here we report the results of the first assessment of HIV prevalence and risk behaviour in this group in Vientiane, Lao People's Democratic Republic. Between August and September 2007, 540 men were enrolled from venues around Vientiane, using venue-day-time sampling. Men of Lao nationality, 15 years and over, reporting oral or anal sex with a man in the previous 6 months were eligible for participation. Demographic and socio-behavioural information was self-collected using hand-held computers. Oral fluid was tested for HIV infection. Logistic regression was used to evaluate risk factors for prevalent HIV infection. The median age of participants was 21 years; the HIV prevalence was 5.6%. Of participants, 39.6% reported exclusive attraction to men and 57.6% reported sex with women. Of those who reported having regular and nonregular sexual partner(s) in the past 3 months, consistent condom use with these partners was 14.4 and 24.2%, respectively. A total of 42.2% self-reported any sexually transmitted infection symptoms and 6.3% had previously been tested for HIV. Suicidal ideation was reported by 17.0%, which was the only variable significantly and independently associated with HIV infection in multivariate analysis. Although the HIV prevalence is low compared with neighbouring countries in the region, men who have sex with men in Lao People's Democratic Republic are at high behavioural risk for HIV infection. To prevent a larger HIV epidemic occurrence and transmission into the broader community, higher coverage of HIV prevention interventions is required.

RESUMEN Se aporta información sobre la descripción original, sinonimias, taxonomía, distribución,... more RESUMEN Se aporta información sobre la descripción original, sinonimias, taxonomía, distribución, morfología, ciclo vital, hábitat y estado de conservación de las diez especies de náyades (moluscos bivalvos de la superfamilia Unionoidea) nativas de la península Ibérica: Marga-ritifera auricularia (Spengler, 1793), M. margaritifera (L., 1758), Potomida littoralis (Cuvier, 1798), Unio mancus Lamarck, 1819, U. gibbus Spengler, 1793, U. delphinus Spengler, 1793, U. tumidiformis Castro, 1885, U. ravoisieri Deshayes, 1847, Anodonta anatina (L., 1758) y A. cygnea (L., 1758). Se restablece Unio delphinus, Spengler, 1793 como el nombre válido para la especie ibérica conocida hasta la fecha como Unio picto-rum y se cita por primera vez la presencia de Unio ravoisieri Deshayes, 1847 en la penín-sula Ibérica. Además se ilustran las conchas y detalles anatómicos de todas las especies, incluyendo, cuando se conoce, la forma y dimensiones de sus gloquidios así como información sobre los peces hosp...

Background: Epidemiologic investigations that rely on a single method may have substantial limita... more Background: Epidemiologic investigations that rely on a single method may have substantial limitations in evaluating individual, network, and community dynamics of disease transmission. To investigate an HIV epidemic among young black men who have sex with men (YBMSM) aged 1625 in Jackson, Mississippi, we used multiple methods. Methods: During JanuaryApril 2008, we conducted (1) a chart review of 121 black men aged 1331 with a recent diagnosis of HIV infection; (2) a rapid qualitative assessment (interviews with 25 community members); (3) a case-control study of 29 HIV-positive and 90 HIV-negative YBMSM; (4) a network analysis of 23 HIV-positive YBMSM; (5) an in-depth qualitative assessment of 7 HIV-positive and 9 HIV-negative YBMSM; and (6) a phylogenetic analysis of HIV strains from 500 persons in Mississippi with a recent diagnosis. Results: Using multiple approaches allowed us to verify and supplement data (e.g., partner selection, travel, sexuality-related stigma) from separate...

Journal of Biomedical Science and Engineering, 2012

To assess, in vitro, the cellular viability in a murine macrophage cell line J774 with 9 differen... more To assess, in vitro, the cellular viability in a murine macrophage cell line J774 with 9 different orthodontic wires and to evaluate the effects of its NO production. To assess cellular viability by MTT: 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl tetrazolium bromide assay in the cell line J774 with 9 different orthodontic wires and quantify NO production by these macrophages. Cell cultures were evaluated at 24, 48 and 72 hours. There was no significant difference of the means of cellular viability between the control and the group of wires in the respective time intervals. In the comparison with the control group, there was significant difference in the NO production in groups 1, 6, and 9 at 24 hours interval. Group 8 showed significant difference in relation to the control group at final time interval. Cellular viability in all groups was higher at the final time interval than at the initial time interval. This increase was significant in the control group. In the material groups, the final mean of cellular viability at 72 hours showed no significant difference when compared with the control group. NO production in all groups was higher at the final time interval than at the initial time interval. This increase was significant in the control group. In the material groups, the final mean of NO production at 72 hours was only significant in group 8 (beta-titanium) when compared with the control group.

Computers in Industry, 2015

ABSTRACT

Nutrición hospitalaria, 2014

To identify critical periods in the variation in body composition during a school year and determ... more To identify critical periods in the variation in body composition during a school year and determine possible causes. A total of 363 boys and girls aged between 10 and 14 years participated in the study. Before and after the Winter Holidays (WIH) and National Holidays (NAH) (July and September, respectively), measurements were taken of body weight, body fat percentage, waist perimeter, time spent on physical activity and hours of sleep in order to determine the variations. The normality of the data was confirmed and the means were compared with an alpha significance level of p<0.05. The school children increased in weight by 600 g and 510 g in the NAH and WIH, respectively (p<0.0001), and their body fat percentage was significantly increased during both periods (0.51%); however, the waist perimeter measurement saw no significant changes. It can also be seen that in NAH physical activity dropped by an important amount (-41 min, p<0.0001), though this did not occur in WIH. A ...

Lecture Notes in Computer Science, 2012

... Agent System Using JaCaMo Carlos M. Toledo1, Rafael H. Bordini2, Omar Chiotti1, and Marıa R. ... more ... Agent System Using JaCaMo Carlos M. Toledo1, Rafael H. Bordini2, Omar Chiotti1, and Marıa R. Galli1 1 INGAR-CONICET, Avellaneda 3657, Santa Fe Argentina {cmtoledo, chiotti, mrgalli}@ santafe-conicet. gov. ar 2 INF-UFRGS, CP 15064, 91501-970 Porto Alegre RS, Brazil ...

Science of Computer Programming, 2014

ABSTRACT Knowledge Management (KM) models proposed in the literature do not take into account all... more ABSTRACT Knowledge Management (KM) models proposed in the literature do not take into account all necessary aspects for effective knowledge management. First, to address this issue, this paper presents a set of requirements that any KM model or initiative should take into account to cover all aspects implied in knowing processes. These requirements were identified through a critical and evolutionary analysis of KM. Second; the paper presents a new distributed KM Conceptual Model whose building blocks are the knowledge activities involved in knowing processes. These activities are: knowledge creation, knowledge sharing, and knowledge representation and retrieval. This model provides a holistic view of KM whose purpose is helping managers understand the scope of this initiative, and supplying a guide for research and implementation in organizations. In this sense, the model presents KM as a highly social rather than technological process. Third; the paper briefly describes an architecture to provide a technological support for knowledge representation and retrieval activities of the proposed KM Conceptual Model. This architecture allows implementing a distributed organizational memory that helps to represent the knowledge context through an ontological model, providing a local perspective of each knowledge domain within the organization. Strategies for knowledge annotation, knowledge retrieval, and ontology evolution are briefly described and results of preliminary performance analysis are shown. Finally; based on the available literature, a comparative analysis of different KM models shows their adequacy for previously presented requirements.

Computacion Y Sistemas Vol 12 No 002, Sep 10, 2011

The objective of this work consists in the analysis of reliability in process plants in order to ... more The objective of this work consists in the analysis of reliability in process plants in order to manage the failure risks and avoid them considering the probability of failure among other important criteria. The preventive maintenance is an important function for the better operation of any enterprise; we propose the ranking of process equipment according with their criticality for the operation plant to get a good preventive maintenance planning. The subjacent hypothesis is that decision makers should recognize that preventive maintenance planning does not have a single criterion as for example, costs or time, but are multicriteria by nature. To show how this methodology functions, naphtha and intermediate distillates Hidrodesulfuration Plant is used as a case study. The obtained results are the ranking of the process equipment; besides the parametric study that shows: the lower the budget assigned to preventive maintenance, the bigger the economic loss.

Aids, 2009

Men who have sex with men are at high risk for HIV infection. Here we report the results of the f... more Men who have sex with men are at high risk for HIV infection. Here we report the results of the first assessment of HIV prevalence and risk behaviour in this group in Vientiane, Lao People&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;s Democratic Republic. Between August and September 2007, 540 men were enrolled from venues around Vientiane, using venue-day-time sampling. Men of Lao nationality, 15 years and over, reporting oral or anal sex with a man in the previous 6 months were eligible for participation. Demographic and socio-behavioural information was self-collected using hand-held computers. Oral fluid was tested for HIV infection. Logistic regression was used to evaluate risk factors for prevalent HIV infection. The median age of participants was 21 years; the HIV prevalence was 5.6%. Of participants, 39.6% reported exclusive attraction to men and 57.6% reported sex with women. Of those who reported having regular and nonregular sexual partner(s) in the past 3 months, consistent condom use with these partners was 14.4 and 24.2%, respectively. A total of 42.2% self-reported any sexually transmitted infection symptoms and 6.3% had previously been tested for HIV. Suicidal ideation was reported by 17.0%, which was the only variable significantly and independently associated with HIV infection in multivariate analysis. Although the HIV prevalence is low compared with neighbouring countries in the region, men who have sex with men in Lao People&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;s Democratic Republic are at high behavioural risk for HIV infection. To prevent a larger HIV epidemic occurrence and transmission into the broader community, higher coverage of HIV prevention interventions is required.

JAIDS Journal of Acquired Immune Deficiency Syndromes, 2016

We describe the implementation of a pilot project to demonstrate the safety and feasibility of pr... more We describe the implementation of a pilot project to demonstrate the safety and feasibility of providing PrePex circumcision from a mobile clinic. We analyzed available project diary entries and staff meeting minutes to identify challenges encountered. The main challenges identified were (1) daily time constraints because of setting up procedures, (2) transportation logistics for clients when the mobile clinic had moved to a different location, (3) integration and coordination of staff responsibilities, and (4) recruitment for PrePex services in the mobile clinic. The provision of PrePex device circumcision through a mobile clinic was feasible but careful planning and review of operational procedures were needed to resolve the implementation challenges.

Nutricion Hospitalaria Organo Oficial De La Sociedad Espanola De Nutricion Parenteral Y Enteral, 2014

Brazilian Research in Pediatric Dentistry and Integrated Clinic, Aug 16, 2009

Objetivo: Determinar os índices de erro e de discrepância de medições realizadas em modelos ortod... more Objetivo: Determinar os índices de erro e de discrepância de medições realizadas em modelos ortodônticos em acrílico com dentes de estoque em oclusão dentária e maloclusão, utilizando paquímetro digital e avaliar a influência do tempo de experiência profissional na exatidão das medições. Método: Duas medições, com um intervalo mínimo de 30 dias, foram realizadas por 30 alunos de graduação em Odontologia da FO da UFJF, 12 alunos do curso de especialização em Ortodontia da FO da UFJF e 6 professores do curso de especialização em Ortodontia da UFJF. Após a realização das medidas, as médias das dimensões utilizadas no estudo foram obtidas por grupo. A análise estatística utilizada lançou mão do teste t de Student, do ANOVA e do teste de Tukey. Resultados: Erros sistemáticos foram observados na oclusão dentária entre os alunos da especialização e na maloclusão entre os professores da especialização e os alunos da graduação. Discrepâncias de medidas foram observadas na oclusão dentária e na maloclusão entre os alunos da especialização e os da graduação. Erros de medidas foram encontrados na oclusão dentária entre os alunos da graduação e os da especialização. Erros de medidas foram encontrados na maloclusão entre os professores da especialização e os alunos da graduação. Conclusão: O tempo de experiência profissional teve influência significativa nas medições, pois se verificou que o número de erros sistemáticos e discrepâncias de medidas foi maior no grupo de menor experiência, isto é, alunos de graduação, e menor no grupo de maior experiência, grupo de professores da especialização.

Http Dx Doi Org 10 1080 03004430214545, Sep 17, 2010

Computacion Y Sistemas, Dec 1, 2008

... 12 No. 2, 2008, pp 208-215 ISSN 1405-5546 Page 3. 210 Edgar Sevilla Juárez and Carlos Enrique... more ... 12 No. 2, 2008, pp 208-215 ISSN 1405-5546 Page 3. 210 Edgar Sevilla Juárez and Carlos Enrique Escobar Toledo Case Study Selection ... Maximum Economic Loss) Value of Naphtha production P&ID DOW Guide PFD Naphtha market price Naphtha production ...

School Community Journal, 1999

School-age child care (SACC), while relatively new as a social institution (Coleman, Robinson, &a... more School-age child care (SACC), while relatively new as a social institution (Coleman, Robinson, & Rowland, 1993; Seligson, 1991; Theil, McCroskey, & Marquart, 1988), has become an important consideration for working parents whose children would otherwise be left on ...

Aids, 2009

Men who have sex with men are at high risk for HIV infection. Here we report the results of the f... more Men who have sex with men are at high risk for HIV infection. Here we report the results of the first assessment of HIV prevalence and risk behaviour in this group in Vientiane, Lao People&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;s Democratic Republic. Between August and September 2007, 540 men were enrolled from venues around Vientiane, using venue-day-time sampling. Men of Lao nationality, 15 years and over, reporting oral or anal sex with a man in the previous 6 months were eligible for participation. Demographic and socio-behavioural information was self-collected using hand-held computers. Oral fluid was tested for HIV infection. Logistic regression was used to evaluate risk factors for prevalent HIV infection. The median age of participants was 21 years; the HIV prevalence was 5.6%. Of participants, 39.6% reported exclusive attraction to men and 57.6% reported sex with women. Of those who reported having regular and nonregular sexual partner(s) in the past 3 months, consistent condom use with these partners was 14.4 and 24.2%, respectively. A total of 42.2% self-reported any sexually transmitted infection symptoms and 6.3% had previously been tested for HIV. Suicidal ideation was reported by 17.0%, which was the only variable significantly and independently associated with HIV infection in multivariate analysis. Although the HIV prevalence is low compared with neighbouring countries in the region, men who have sex with men in Lao People&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;s Democratic Republic are at high behavioural risk for HIV infection. To prevent a larger HIV epidemic occurrence and transmission into the broader community, higher coverage of HIV prevention interventions is required.

RESUMEN Se aporta información sobre la descripción original, sinonimias, taxonomía, distribución,... more RESUMEN Se aporta información sobre la descripción original, sinonimias, taxonomía, distribución, morfología, ciclo vital, hábitat y estado de conservación de las diez especies de náyades (moluscos bivalvos de la superfamilia Unionoidea) nativas de la península Ibérica: Marga-ritifera auricularia (Spengler, 1793), M. margaritifera (L., 1758), Potomida littoralis (Cuvier, 1798), Unio mancus Lamarck, 1819, U. gibbus Spengler, 1793, U. delphinus Spengler, 1793, U. tumidiformis Castro, 1885, U. ravoisieri Deshayes, 1847, Anodonta anatina (L., 1758) y A. cygnea (L., 1758). Se restablece Unio delphinus, Spengler, 1793 como el nombre válido para la especie ibérica conocida hasta la fecha como Unio picto-rum y se cita por primera vez la presencia de Unio ravoisieri Deshayes, 1847 en la penín-sula Ibérica. Además se ilustran las conchas y detalles anatómicos de todas las especies, incluyendo, cuando se conoce, la forma y dimensiones de sus gloquidios así como información sobre los peces hosp...

Background: Epidemiologic investigations that rely on a single method may have substantial limita... more Background: Epidemiologic investigations that rely on a single method may have substantial limitations in evaluating individual, network, and community dynamics of disease transmission. To investigate an HIV epidemic among young black men who have sex with men (YBMSM) aged 1625 in Jackson, Mississippi, we used multiple methods. Methods: During JanuaryApril 2008, we conducted (1) a chart review of 121 black men aged 1331 with a recent diagnosis of HIV infection; (2) a rapid qualitative assessment (interviews with 25 community members); (3) a case-control study of 29 HIV-positive and 90 HIV-negative YBMSM; (4) a network analysis of 23 HIV-positive YBMSM; (5) an in-depth qualitative assessment of 7 HIV-positive and 9 HIV-negative YBMSM; and (6) a phylogenetic analysis of HIV strains from 500 persons in Mississippi with a recent diagnosis. Results: Using multiple approaches allowed us to verify and supplement data (e.g., partner selection, travel, sexuality-related stigma) from separate...

Journal of Biomedical Science and Engineering, 2012

To assess, in vitro, the cellular viability in a murine macrophage cell line J774 with 9 differen... more To assess, in vitro, the cellular viability in a murine macrophage cell line J774 with 9 different orthodontic wires and to evaluate the effects of its NO production. To assess cellular viability by MTT: 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl tetrazolium bromide assay in the cell line J774 with 9 different orthodontic wires and quantify NO production by these macrophages. Cell cultures were evaluated at 24, 48 and 72 hours. There was no significant difference of the means of cellular viability between the control and the group of wires in the respective time intervals. In the comparison with the control group, there was significant difference in the NO production in groups 1, 6, and 9 at 24 hours interval. Group 8 showed significant difference in relation to the control group at final time interval. Cellular viability in all groups was higher at the final time interval than at the initial time interval. This increase was significant in the control group. In the material groups, the final mean of cellular viability at 72 hours showed no significant difference when compared with the control group. NO production in all groups was higher at the final time interval than at the initial time interval. This increase was significant in the control group. In the material groups, the final mean of NO production at 72 hours was only significant in group 8 (beta-titanium) when compared with the control group.

Computers in Industry, 2015

ABSTRACT

Nutrición hospitalaria, 2014

To identify critical periods in the variation in body composition during a school year and determ... more To identify critical periods in the variation in body composition during a school year and determine possible causes. A total of 363 boys and girls aged between 10 and 14 years participated in the study. Before and after the Winter Holidays (WIH) and National Holidays (NAH) (July and September, respectively), measurements were taken of body weight, body fat percentage, waist perimeter, time spent on physical activity and hours of sleep in order to determine the variations. The normality of the data was confirmed and the means were compared with an alpha significance level of p<0.05. The school children increased in weight by 600 g and 510 g in the NAH and WIH, respectively (p<0.0001), and their body fat percentage was significantly increased during both periods (0.51%); however, the waist perimeter measurement saw no significant changes. It can also be seen that in NAH physical activity dropped by an important amount (-41 min, p<0.0001), though this did not occur in WIH. A ...

Lecture Notes in Computer Science, 2012

... Agent System Using JaCaMo Carlos M. Toledo1, Rafael H. Bordini2, Omar Chiotti1, and Marıa R. ... more ... Agent System Using JaCaMo Carlos M. Toledo1, Rafael H. Bordini2, Omar Chiotti1, and Marıa R. Galli1 1 INGAR-CONICET, Avellaneda 3657, Santa Fe Argentina {cmtoledo, chiotti, mrgalli}@ santafe-conicet. gov. ar 2 INF-UFRGS, CP 15064, 91501-970 Porto Alegre RS, Brazil ...

Science of Computer Programming, 2014

ABSTRACT Knowledge Management (KM) models proposed in the literature do not take into account all... more ABSTRACT Knowledge Management (KM) models proposed in the literature do not take into account all necessary aspects for effective knowledge management. First, to address this issue, this paper presents a set of requirements that any KM model or initiative should take into account to cover all aspects implied in knowing processes. These requirements were identified through a critical and evolutionary analysis of KM. Second; the paper presents a new distributed KM Conceptual Model whose building blocks are the knowledge activities involved in knowing processes. These activities are: knowledge creation, knowledge sharing, and knowledge representation and retrieval. This model provides a holistic view of KM whose purpose is helping managers understand the scope of this initiative, and supplying a guide for research and implementation in organizations. In this sense, the model presents KM as a highly social rather than technological process. Third; the paper briefly describes an architecture to provide a technological support for knowledge representation and retrieval activities of the proposed KM Conceptual Model. This architecture allows implementing a distributed organizational memory that helps to represent the knowledge context through an ontological model, providing a local perspective of each knowledge domain within the organization. Strategies for knowledge annotation, knowledge retrieval, and ontology evolution are briefly described and results of preliminary performance analysis are shown. Finally; based on the available literature, a comparative analysis of different KM models shows their adequacy for previously presented requirements.