ATAMM enhancement and multiprocessor performance evaluation

ATAMM (Algorithm To Architecture Mapping Model) enhancement and multiprocessor performance evaluation is discussed. The following topics are included: the ATAMM model; ATAMM enhancement; ADM (Advanced Development Model) implementation of ATAMM; and ATAMM support tools

Fricke and polymer gel 2D dosimetry validation using Monte Carlo simulation

Complexity in modern radiotherapy treatments demands advanced dosimetry systems for quality control. These systems must have several characteristics, such as high spatial resolution, tissue equivalence, three-dimensional resolution, and dose-integrating capabilities. In this scenario, gel dosimetry has proved to be a very promising option for quality assurance. In this study, the feasibility of Fricke and polymer gel dosimeters suitably shaped in form of thin layers and optically analyzed by visible light transmission imaging has been investigated for quality assurance in external radiotherapy. Dosimeter irradiation was carried out with a 6-MV photon beam (CLINAC 600C). The analysis of the irradiated dosimeters was done using two-dimensional optical transmission images. These dosimeters were compared with a treatment plan system using Monte Carlo simulations as a reference by means of a gamma test with parameters of 1 mm and 2%. Results show very good agreement between the different dosimetric systems: in the worst-case scenario, 98% of the analyzed points meet the test quality requirements. Therefore, gel dosimetry may be considered as a potential tool for the validation of other dosimetric systems.Fil: Vedelago, José Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina. Universidad Nacional de Córdoba; ArgentinaFil: Chacón Obando, D.. Universidad Nacional. Physics Department; Costa Rica. Universidad Nacional de Córdoba; ArgentinaFil: Malano, Francisco Mauricio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina. Universidad Nacional de Córdoba; ArgentinaFil: Conejeros, R.. Servicio de Radioterapia, Icos. Temuco, Chile;Fil: Figueroa, R.. Universidad de la Frontera; ChileFil: Garcia, D.. Servicio de Imagenes por Resonancia Magnética; ChileFil: González, G.. Servicio de Imagenes por Resonancia Magnética; ChileFil: Romero, Marcelo Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina. Universidad Nacional de Córdoba; ArgentinaFil: Santibañez, M.. Servicio de Imagenes por Resonancia Magnética; ChileFil: Strumia, Miriam Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaFil: Velásquez, J.. Servicio de Radioterapia; ChileFil: Mattea, Facundo. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Departamento de Química Orgánica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Valente, M.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina. Universidad de La Frontera. Departamento de Ciencias Físicas; Chil

La responsabilidad social universitaria desde el paradigma de la psicología comunitaria

29 p.Esta ponencia pretende plantear una propuesta de vinculación de dos campos del conocimiento, que hemos vivenciado de manera cercana, al analizar los fundamentos y propuestas que presenta cada uno. Estas reflexiones han acompañado nuestra participación, en representación de la Universidad Católica de Colombia, en el Observatorio de responsabilidad social universitaria (RSU).Ponencia presentada en el VII Coloquio Interno de Profesores en la Universidad Católica de Colombia.Ayala Rodríguez, N., Del Portillo Obando, M. C. & Neira R., M. V. (2013). La responsabilidad social universitaria desde el paradigma de la psicología comunitaria. En: W. F. Puentes González, A. Rojas Claros, A. Aldana Piñeros, E. Cruz Espejo, E. J. Garzón P., L. K. Hurtado Morales ... F. Barrero Rivera. Responsabilidad social y universidad (pp. 103-131). Bogotá: Universidad Católica de Colombia. Departamento de Humanidades

Algorithm To Architecture Mapping Model (ATAMM) multicomputer operating system functional specification

A functional description of the ATAMM Multicomputer Operating System is presented. ATAMM (Algorithm to Architecture Mapping Model) is a marked graph model which describes the implementation of large grained, decomposed algorithms on data flow architectures. AMOS, the ATAMM Multicomputer Operating System, is an operating system which implements the ATAMM rules. A first generation version of AMOS which was developed for the Advanced Development Module (ADM) is described. A second generation version of AMOS being developed for the Generic VHSIC Spaceborne Computer (GVSC) is also presented

Quality of two table grape guard cultivars treated with single or dual-phase release SO2 generators

Berries of seeded table grapes (cultivars Napoleón and Aledo) were trimmed in commercial packing houses, inoculated with Botrytis cinerea, packed with single and dual-phase release SO2 pads, and stored for up to four months at 0 ºC and 85±5 % relative humidity. Control grapes with or without inoculation, but without SO2 pads, were stored for up to 2 months. Botrytis cinerea rot (grey mould) limited the shelf-life of Aledo grapes to one month, while a two month shelf-life was established for Napoleón grapes, which suffered from berry splitting, Cladosporium herbarum and Botrytis cinerea rots. Yeasts of the Candida genera and secondary fungi were also identified in fruit suffering sour rot after 2 months at 0oC. No differences in grey mould development in the treatments without SO2 pads with or without inoculation. The native grey mould of these grapes was purified and included as the B. cinerea strain 20248 in the Spanish Type Culture Collection. Storage time, but not SO2 pads, slightly affected fruit quality. During the first month at 0oC, total soluble solids decreased by 1oBrix in 'Áledo' and berry hardness temporarily increased by around 30% in both cultivars. The pads provoked an SO2 taste acceptable for consumption, which was slightly higher in Napoleón than in Aledo grapes. The dual-phase release SO2 pads showed better performance for the long-term storage of grapes than single-release pads (both as regards berry sensory attributes and stem appearance, with lower stem browning). The dual-phase release SO2 pads extended the shelf-life of grapes by around 1 month, depending on the cultivar. Napoleón grapes showed a better potential for longterm storage than Aledo grapes due to thicker and more compact epidermis, thicker cell walls, and different epidermal microstructure including the transition cells between epidermis and the parenchyma

Disponibilidad de fitomasa aérea por potrero en un área con pastizal samófilo en el departamento Chalileo-La Pampa

Este ensayo constituye un estudio preliminar de un área con pastizal natural samófilo realizado en la Estancia "El Paralelo",Lat. 36 S.-Long. 66·17' W, Depto. Chalileo (La Pampa). Se obtuvieron datos de composición florística, cobertura, frecuencia y disponibilidad de fitomasa aérea del pastizal y también del área con "pasto llorón" (Eragrostis curvula L.) Se evaluó también el efecto causado por un fuego accidental ocurrido en el mes de noviembre de 1988. El "pasto llorón" tiene un crecimiento anual acumulado de 1860 KgMS/ha/año y cobertura de 50%. De todos los sectores con pastizal natural, la media pendiente presenta la mayor disponibilidad forrajera (1842 KgMS/ha) y una cobertura vegetal de 45%. En esta posición topográfica Panicum urvilleanum "tupe" es la especie dominante. Está acompañada por Aristida sp. y Bothriochloa spriengfieldii "penacho blanco". Los estudios efectuados permitieron esbozar el estado de condición de los potreros con pastizal natural del establecimiento. Los resultados encontrados demuestran un bajo estado de condición del pastizal, excepto el subsector de la media pendiente cuyo estado de condición es bueno.Director: Biol. Eduardo Cano, Profesor Titular Cátedra de Ecología vegetal y Fitogeografía

Geosynthetic reinforcement for reflective cracking reduction in asphalt pavements

A survey by the National Confederation of Transportation of Brazil (CNT, 2011) shows that 47.9% of the country’s roads need urgent interventions to recover satisfactory traffic conditions. This paper presents results of an investigation on the use of geosynthetic reinforcement in asphalt pavements with reference to capping of old courses. The use of geosynthetic reinforcement was intended to reduce crack reflection between an old surface course and the new hot mix asphalt (HMA) layer. In order to investigate crack reflection, two prismatic beams of dense HMA were prepared and geogrids or a geocomposite (geogrid with a geotextile coated with bitumen) reinforcement was placed in between them. An initial crack was induced by cutting the lower HMA specimen and a vertical cyclic loading was applied with a steel plate at the center of top layer. The test was interrupted when the vertical displacement at the surface reached 25 mm. The results show that geogrid reinforcement may increase by up to 15 times the number of loading cycles required to reach the pre-established value of vertical displacement (25 mm). In addition, it was noticed that the severity of the cracking mechanism was reduced and that crack reflection to the upper layer was reduced by the reinforcement inclusion

Trastornos menores de salud como factores asociados al desempeño académico de estudiantes de enfermería

Evidence shows that minor health disorders are a relevant factor to be researched among students at universities. This is an issue not only related to individual characteristics, but also might be associated to academic performance. This problem could be influenced by requirements imposed by the educational system, such as a change in students‟ roles and organization of their own time, among others. These elements must be made compatible with adolescent habits, their attitudes and biologic changes. To gauge this problem, we have used a survey designed at the University of Barcelona, and modified it for our own purposes. The sample is composed of 62 first year students of a nursing program in a private university in Chile. 94% of the sample was female. On average, participants answered affirmatively to 7.5 of the problems presented on the list, and negatively to 12.5 (Total = 18). Musculoskeletal pain, headache and sleep disorders are the most common disorders present in over half of the students surveyed. We found correlations between some disorders: Intermediate correlation between “Difficulties in maintaining sleep” and “Eating fewer calories than the body needs.” This second variable is associated to some other disorders. There was a low negative correlation between “Difficulties in maintaining sleep” and “Eating more calories than the body needs.” Similar results related to sleep hygiene were obtained from other researchers. Excessive Calorie Intake is higher than results reported in other studies.La evidencia muestra los trastornos menores en salud en estudiantes universitarios como un factor relevante de ser estudiado. Una variable asociada al rendimiento académico, no tan sólo por las características individuales de ellos, sino también por lo que significa el integrarse a un sistema que impone una serie de exigencias y demandas, por ejemplo un cambio en el desempeño de roles, organización del tiempo, entre otras, que deben compatibilizar con sus hábitos de adolescentes, actitudes y cambios orgánicos. De modo de dimensionar el problema, aplicamos un cuestionario diseñado en la Universidad de Barcelona, adaptado por nosotros, a una muestra de estudiantes que ingresaron en primer año de enfermería en una universidad privada en Chile. 62 personas participaron voluntariamente del estudio. 94% corresponde a mujeres. De los 18 problemas presentados en el instrumento, los participantes contestaron en promedio afirmativamente a 7,5 de ellos y negativamente a 12,5. Dolor osteomuscular, cefalea y trastornos del sueño son los trastornos más frecuentes, presentes en más de la mitad de los estudiantes encuestados. Encontramos algunas correlaciones entre los trastornos: correlación positiva intermedia entre „dificultades para mantener el sueño‟ e „ingerir menos calorías que las necesarias‟; esta última variable tiene asociaciones débiles con varios otros trastornos menores. Se obtuvo una correlación negativa, aunque baja, con ingerir más calorías que las necesarias. Resultados similares encontramos en lo relativo a la higiene del sueño. La ingesta calórica superior a los requerimientos es mayor en la muestra estudiada que en otras investigaciones

Antimicrobial Potential Of Some Plant Extracts Against Candida Species.

The increase in the resistance to antimicrobial drugs in use has attracted the attention of the scientific community, and medicinal plants have been extensively studied as alternative agents for the prevention of infections. The Candida genus yeast can become an opportunistic pathogen causing disease in immunosuppressive hosts. The purpose of this study was to evaluate dichloromethane and methanol extracts from Mentha piperita, Rosmarinus officinalis, Arrabidaea chica, Tabebuia avellanedae, Punica granatum and Syzygium cumini against Candida species through the analysis of Minimum Inhibitory Concentration (MIC). Results presented activity of these extracts against Candida species, especially the methanol extract.701065-