Computer Simulation and Fire Drill in an Educational Building

Despite the evolution of computational models for evacuation simulations, there's still some doubt if they can generate accurate results. The objective is to analyze and compare the evacuation times of a fire drill and a computer simulation in an educational building. The method consisted of a fire drill with prior notice of a 4-floor building with classrooms in a public university. A computational model was developed for the same building and population using the evacuation simulation software Pathfinder. The results were that the evacuation times observed in the computer simulation were slightly lower than the times of the fire drill because people covered smaller distances due to the random distribution performed by the Pathfinder software and because in the drill some time was spent for the start of the movement toward the exit, which was estimated at around 30 seconds, while the software was configured for a pre-movement time equal to zero. The use of the computer simulation, therefore, proved to be an effective solution to replace the fire drill, since it allows for the identification of design failures and for the simulation of different scenarios in less time and without the need to mobilize people

Development of a Computational Tool for the Analysis of Hydro-Sanitary Designs

The high demand for hydro-sanitary designs to be analyzed by the public system, in addition to the long time it takes to complete such analyses, reveals that the employed verification methodology and bureaucratic procedures are obsolete. The main objective of this work was to develop a computational tool for releasing and analyzing hydro-sanitary systems, seeking to automate the process. The methodology was initiated with the creation of an electronic archive of the rules and laws pertinent to the subject, followed by the identification of the work routines for hydro-sanitary designs, the programming of the tool, the creation of an electronic repository for objects and, finally, the validation of the software through testing. As a result, the computational model will automatically retrieve project data in the BIM platform and assess information of designs developed in CAD. Based on this work, the conclusion can be drawn that the automation of the release and analysis processes of hydro-sanitary designs is possible and achievable

Reflexiones de estudiantes universitarios, docentes de Agroecología (U.N.Cuyo) y agentes de extensión del INTA en prácticas de intervención socioproductivas en las zonas de Luján de Cuyo y Valle de Uco, Mendoza

En el marco de la asignatura Agroecología y Ambientes Rurales de la carrera en Ingeniería en Recursos Naturales Renovables (FCA- UNCuyo), se han realizado durante 10 años académicos consecutivos, dos actividades consistentes en visitar a diferentes tipos sociales agrarios ubicados en Luján de Cuyo y el Valle de Uco. En las nombradas actividades, los estudiantes realizan una visita extendida a productores que integran diferentes cadenas productivas, con el objetivo de caracterizar el ecosistema, sociosistema y tecnosistema en cada caso, además de diferenciar manejos convencionales y agroecológicos. Con la información recabada y reflexionada, los estudiantes realizan un trabajo integrador, con carácter de condición obligatoria para rendir el examen final de la asignatura, que rescata una problemática detectada y propone una solución socio tecnológica con base agroecológica, ajustada a las características de tipo social agrario abordado. El nombrado material queda a disposición de los actores involucrados para ser utilizado como una herramienta de comprensión de la dinámica socio-productiva y territorial. En el presente relato realizamos una breve síntesis sobre las experiencias de cada visita a campo y se presentan las reflexiones de los actores involucrados acerca de esta experiencia.In the framework of agroecology and rural environments race course in Engineering in Renewable Natural Resources (FCA UNCuyo) were performed for 10 consecutive school years, two consistent activities visit different agricultural social types are located in Lujan de Cuyo and Uco Valley. In the named activities, students made an extended visit to producers that integrate different production chains, in order to characterize the ecosystem, sociosistema and Technosystem in each case, in addition to conventional agro differentiate and handling. With the information gathered and reflected, students take an integrative work, as an obligatory condition to take the final exam of the subject, who rescues a detected problem and proposes a solution partner agroecologically technological basis and adjusted to the characteristics of a social nature agricultural addressed. The named material is available to the actors involved to be used as a tool for understanding the socio-productive and territorial dynamics. In this story is a brief summary of experiences of each field visit and reflections of stakeholders about this experience are presented.Eje: A2: Paisajes, Territorios y AgroecologíaFacultad de Ciencias Agrarias y Forestale

Reflexiones de estudiantes universitarios, docentes de Agroecología (U.N.Cuyo) y agentes de extensión del INTA en prácticas de intervención socioproductivas en las zonas de Luján de Cuyo y Valle de Uco, Mendoza

En el marco de la asignatura Agroecología y Ambientes Rurales de la carrera en Ingeniería en Recursos Naturales Renovables (FCA- UNCuyo), se han realizado durante 10 años académicos consecutivos, dos actividades consistentes en visitar a diferentes tipos sociales agrarios ubicados en Luján de Cuyo y el Valle de Uco. En las nombradas actividades, los estudiantes realizan una visita extendida a productores que integran diferentes cadenas productivas, con el objetivo de caracterizar el ecosistema, sociosistema y tecnosistema en cada caso, además de diferenciar manejos convencionales y agroecológicos. Con la información recabada y reflexionada, los estudiantes realizan un trabajo integrador, con carácter de condición obligatoria para rendir el examen final de la asignatura, que rescata una problemática detectada y propone una solución socio tecnológica con base agroecológica, ajustada a las características de tipo social agrario abordado. El nombrado material queda a disposición de los actores involucrados para ser utilizado como una herramienta de comprensión de la dinámica socio-productiva y territorial. En el presente relato realizamos una breve síntesis sobre las experiencias de cada visita a campo y se presentan las reflexiones de los actores involucrados acerca de esta experiencia.In the framework of agroecology and rural environments race course in Engineering in Renewable Natural Resources (FCA UNCuyo) were performed for 10 consecutive school years, two consistent activities visit different agricultural social types are located in Lujan de Cuyo and Uco Valley. In the named activities, students made an extended visit to producers that integrate different production chains, in order to characterize the ecosystem, sociosistema and Technosystem in each case, in addition to conventional agro differentiate and handling. With the information gathered and reflected, students take an integrative work, as an obligatory condition to take the final exam of the subject, who rescues a detected problem and proposes a solution partner agroecologically technological basis and adjusted to the characteristics of a social nature agricultural addressed. The named material is available to the actors involved to be used as a tool for understanding the socio-productive and territorial dynamics. In this story is a brief summary of experiences of each field visit and reflections of stakeholders about this experience are presented.Eje: A2: Paisajes, Territorios y AgroecologíaFacultad de Ciencias Agrarias y Forestale

Reflexiones de estudiantes universitarios, docentes de Agroecología (U.N.Cuyo) y agentes de extensión del INTA en prácticas de intervención socioproductivas en las zonas de Luján de Cuyo y Valle de Uco, Mendoza

En el marco de la asignatura Agroecología y Ambientes Rurales de la carrera en Ingeniería en Recursos Naturales Renovables (FCA- UNCuyo), se han realizado durante 10 años académicos consecutivos, dos actividades consistentes en visitar a diferentes tipos sociales agrarios ubicados en Luján de Cuyo y el Valle de Uco. En las nombradas actividades, los estudiantes realizan una visita extendida a productores que integran diferentes cadenas productivas, con el objetivo de caracterizar el ecosistema, sociosistema y tecnosistema en cada caso, además de diferenciar manejos convencionales y agroecológicos. Con la información recabada y reflexionada, los estudiantes realizan un trabajo integrador, con carácter de condición obligatoria para rendir el examen final de la asignatura, que rescata una problemática detectada y propone una solución socio tecnológica con base agroecológica, ajustada a las características de tipo social agrario abordado. El nombrado material queda a disposición de los actores involucrados para ser utilizado como una herramienta de comprensión de la dinámica socio-productiva y territorial. En el presente relato realizamos una breve síntesis sobre las experiencias de cada visita a campo y se presentan las reflexiones de los actores involucrados acerca de esta experiencia.In the framework of agroecology and rural environments race course in Engineering in Renewable Natural Resources (FCA UNCuyo) were performed for 10 consecutive school years, two consistent activities visit different agricultural social types are located in Lujan de Cuyo and Uco Valley. In the named activities, students made an extended visit to producers that integrate different production chains, in order to characterize the ecosystem, sociosistema and Technosystem in each case, in addition to conventional agro differentiate and handling. With the information gathered and reflected, students take an integrative work, as an obligatory condition to take the final exam of the subject, who rescues a detected problem and proposes a solution partner agroecologically technological basis and adjusted to the characteristics of a social nature agricultural addressed. The named material is available to the actors involved to be used as a tool for understanding the socio-productive and territorial dynamics. In this story is a brief summary of experiences of each field visit and reflections of stakeholders about this experience are presented.Eje: A2: Paisajes, Territorios y AgroecologíaFacultad de Ciencias Agrarias y Forestale

On the relation of Thomas rotation and angular velocity of reference frames

In the extensive literature dealing with the relativistic phenomenon of Thomas rotation several methods have been developed for calculating the Thomas rotation angle of a gyroscope along a circular world line. One of the most appealing concepts, introduced in \cite{rindler}, is to consider a rotating reference frame co-moving with the gyroscope, and relate the precession of the gyroscope to the angular velocity of the reference frame. A recent paper \cite{herrera}, however, applies this principle to three different co-moving rotating reference frames and arrives at three different Thomas rotation angles. The reason for this apparent paradox is that the principle of \cite{rindler} is used for a situation to which it does not apply. In this paper we rigorously examine the theoretical background and limitations of applicability of the principle of \cite{rindler}. Along the way we also establish some general properties of {\it rotating reference frames}, which may be of independent interest.Comment: 14 pages, 2 figure

Equations of Motion of Spinning Relativistic Particle in Electromagnetic and Gravitational Fields

We consider the motion of a spinning relativistic particle in external electromagnetic and gravitational fields, to first order in the external field, but to an arbitrary order in spin. The noncovariant spin formalism is crucial for the correct description of the influence of the spin on the particle trajectory. We show that the true coordinate of a relativistic spinning particle is its naive, common coordinate \r. Concrete calculations are performed up to second order in spin included. A simple derivation is presented for the gravitational spin-orbit and spin-spin interactions of a relativistic particle. We discuss the gravimagnetic moment (GM), a specific spin effect in general relativity. It is shown that for the Kerr black hole the gravimagnetic ratio, i.e., the coefficient at the GM, equals unity (just as for the charged Kerr hole the gyromagnetic ratio equals two). The equations of motion obtained for relativistic spinning particle in external gravitational field differ essentially from the Papapetrou equations.Comment: 32 pages, latex, Plenary talk at the Fairbank Meeting on the Lense--Thirring Effect, Rome-Pescara, 29/6-4/7 199

Spin, gravity, and inertia

The gravitational effects in the relativistic quantum mechanics are investigated. The exact Foldy-Wouthuysen transformation is constructed for the Dirac particle coupled to the static spacetime metric. As a direct application, we analyze the non-relativistic limit of the theory. The new term describing the specific spin (gravitational moment) interaction effect is recovered in the Hamiltonian. The comparison of the true gravitational coupling with the purely inertial case demonstrates that the spin relativistic effects do not violate the equivalence principle for the Dirac fermions.Comment: Revtex, 12 pages, no figures, accepted in Phys. Rev. Let

Equations of Motion of Spinning Relativistic Particle in External Fields

We consider the motion of a spinning relativistic particle in external electromagnetic and gravitational fields, to first order in the external field, but to an arbitrary order in spin. The correct account for the spin influence on the particle trajectory is obtained with the noncovariant description of spin. Concrete calculations are performed up to second order in spin included. A simple derivation is presented for the gravitational spin-orbit and spin-spin interactions of a relativistic particle. We discuss the gravimagnetic moment (GM), a specific spin effect in general relativity. It is demonstrated that for the Kerr black hole the gravimagnetic ratio, i.e., the coefficient at the GM, equals to unity (as well as for the charged Kerr hole the gyromagnetic ratio equals to two). The equations of motion obtained for relativistic spinning particle in external gravitational field differ essentially from the Papapetrou equations.Comment: 22 pages, latex, no figure

Avaliação do cumprimento da NR-18 em função do porte de obra residencial e proposta de lista de verificação da NR-18

O presente trabalho investiga as reais condições dos ambientes de trabalho da indústria da construção, tendo em vista os problemas relacionados à segurança do trabalho nos canteiros de obras. Formulou-se a hipótese de haver discrepância no grau de cumprimento da NR-18 em obras de diferentes portes (pequena, média e grande). Baseado em uma lista de verificação do grau de cumprimento dos requisitos da NR-18, foram avaliados 115 canteiros de obra na cidade de Chapecó - SC. Para cada item da lista de verificação foi atribuída uma nota e, após compilar as informações, estas foram avaliadas conforme os objetivos da pesquisa. Fez-se uma análise crítica para os cinco piores e os cinco melhores itens observados para as obras pequenas, médias e grandes. Analisando-se os resultados é possível afirmar que há uma diferença significativa de aplicação da NR-18 nos diferentes portes de obras, sendo que as obras de grande porte obtiveram uma média final (6,47) significativamente superior em relação às obras pequenas (1,97). Desta forma, foi corroborada a hipótese formulada, podendo se atribuir este resultado a diversos fatores, entre os quais a falta de habilidades gerenciais de segurança e saúde do trabalho nas pequenas empresas. Outra contribuição deste artigo foi a proposta de uma nova lista de verificação para avaliar o grau de cumprimento da NR-18 nos canteiros de obra