276 research outputs found

    Job-shop Scheduling Over a Heterogeneous Platform

    Get PDF
    Real-time scheduling involves determining the allocation of platform resources in such a way tasks can meet their temporal restrictions. This work focuses on job-shop tasks model in which a task have a finite number of nonpreemptive different instances (jobs) that share a unique hard deadline and their time requirements are known until task arrival. Non-preemptive scheduling is considered because this characteristic is widely used in industry. Besides job-shop scheduling has direct impacts on the production efficiency and costs of manufacturing systems. So that the development of analysis for tasks with these characteristics is necessary. The aim of this work is to propose an online scheduling test able to guarantee the execution of a new arriving task, which is generated by human interaction with an embedded system, otherwise to discart it. An extension of the schedulability test proposed by Baruah in 2006 for non-preemptive periodic tasks over an identical platform is presented in this paper. Such extension is applied to non-preemptive tasks that have hard deadlines over a heterogeneous platform. To do that, some virtual changes over both the task set and the platform are effectuated

    Male Grooming: An Ethnographic Research on Perception and Choice of Male Cosmetics

    Get PDF
    The purpose of this study is to explore male perceptions toward cosmetics and their product choice. Applying an ethnographic framework to this study, three males between the ages of 24-30 were interviewed through a series of 141 questions pertaining to their demographics, lifestyle, attitudes toward masculinity, skin care, grooming and cleaning behaviors. The results showed five overarching themes: (1) all of the participants had early experiences with personal care products, (2) the term masculinity was defined with terms such as calm and practical , (3) all participants looked up to their fathers as their key role models, (4) all participants valued loyal friendships, and (5) location convenience drives shopping for cosmetics - participants tend to only shop for cosmetics at a location where they are based at any given point in time, thereby implying an unwillingness to travel to a specialty store for purchasing grooming items. Managerial implications utilizing the results of this research are also discussed

    Antihyperlipemic and antihypertensive effects of Spirulina maxima in an open sample of mexican population: a preliminary report

    Get PDF
    <p>Abstract</p> <p>Background</p> <p><it>Spirulina maxima </it>is a filamentous cyanobacterium used as food supplement because of its high nutrient contents. It has been experimentally proven, <it>in vivo </it>and <it>in vitro </it>that posses several pharmacological properties. The purpose of this study was to evaluate the effects of <it>Spirulina maxima </it>orally supplied (4.5 g/day, for 6 weeks) to a sample of 36 subjects (16 men and 20 women, with ages between 18–65 years) on serum lipids, glucose, aminotransferases and on blood pressure. The volunteers did not modify their dietary habits or lifestyle during the whole experimental period. From each subject, a sample of blood was drawn in fasting state of 12 hours to determi the plasma concentrations of glucose, triacylglycerols (TAG), total cholesterol (TC), cholesterol associated to high density lipoprotein (HDL-C) and aspartate aminotransferase (AST). Anthropometric measurements including systolic (SYST-P) and diastolic (DIAST-P) blood pressure, height, weight and Body Mass Index (BMI) were also recorded.</p> <p>Results</p> <p>Comparing initial and final data, the results showed that there were no significant changes in the values of glucose and AST, but significant differences in TAG, TC, and HDL-C, were observed: TAG 233.7 ± 177.8 vs. 167.7 ± 100.7 mg/dL (p < 0.001), TC 181.7 ± 37.5 vs. 163.5 ± 34.4 mg/dL (p < 0.001), C-HDL 43.5 ± 14.4 vs. 50 ± 18.8 mg/dL (p < 0.01). The univariated analysis showed that the changes in the HDL-C and TC concentrations were dependent on TAG concentration (p = 0.247 and p = 0.108, respectively); nevertheless the calculated values for cholesterol associated to low density lipoprotein (LDL-C) were significantly reduced by the <it>Spirulina maxima </it>treatment but independently of the TAG changes. In addition, significant differences were found comparing initial and final SYST-P and DIAST-P blood pressure in both male and female: SYST-P male 121 ± 9 vs. 111 ± 8 mm Hg (p < 0.01), DIAST-P male 85 ± 6.5 vs. 77 ± 9 mm Hg (p < 0.01); SYST-P female 120 ± 9.5 vs. 109 ± 11 mm Hg (p < 0.002), DIAST-P female 85 ± 11 vs. 79 ± 7.5 mm Hg (p < 0.03).</p> <p>Conclusion</p> <p>The <it>Spirulina maxima </it>showed a hypolipemic effect, especially on the TAG and the LDL-C concentrations but indirectly on TC and HDL-C values. It also reduces systolic and diastolic blood pressure.</p

    Effect of habitat structure on the most frequent echinoderm species inhabiting coral reef communities at Isla Isabel National Park (Mexico)

    Get PDF
    The spatial distribution and abundance of the seven most abundant species of echinoderms (Diadema mexicanum, Centrostephanus coronatus, Eucidaris thouarsii, Isostichopus fuscus, Pharia pyramidatus, Phataria unifascialis and Acanthaster ellisii) were evaluated in coral communities of Isla Isabel National Park (Mexico). Biological (corals and other benthic groups) and physical (rocks and boulders) structural elements of the habitat were evaluated to determine their relationship to these species. Our results show that species composition and abundance varied among sampling sites and between seasons. Also were obtained significant differences in the echinoderm assemblage among sites across seasons. Similar results were detected for the environmental variables related to benthic habitat structure. D. mexicanum, P. unifascialis, E. thouarsii and C. coronatus were the main contributors to the species abundance and distribution in Isla Isabel. Most echinoderm species were positively related to the coverage of different coral species, algae and various types of benthic organisms as well as to physical benthic variables. These outcomes suggest that the spatial distribution and abundance of these echinoderms are explained by the habitat structure, which should be used to design conservation and management strategies for coral communities

    Mapeo de procesos dentro del área de programas del Organismo de Nutrición Infantil

    Get PDF
    El PAP es una experiencia de aprendizaje y de contribución social integrada por estudiantes, profesores, actores sociales y responsables de las organizaciones, que de manera colaborativa construir sus conocimientos para dar respuestas a problemáticas de un contexto específico y en un tiempo delimitado. Por tanto, la experiencia PAP supone un proceso en lógica de proyecto, así como de un estilo de trabajo participativo y recíproco entre los involucrados. La organización donde se trabajará el proyecto PAP es en el Organismo de Nutrición Infantil, con el que se tuvo el primer acercamiento con la organización el miércoles 9 de febrero. Durante la reunión que se tuvo se definió el contexto actual de la organización y se presentaron los distintos proyectos a desarrollar, dependiendo de la carrera y los intereses de los miembros del equipo. Este documento abarcará el proyecto realizado por los estudiantes de ingeniería industrial, el cual consta del mapeo y documentación de procesos de un área de importancia especificada por el ONI.ITESO, A.C

    Capacitación para mapeo de procesos BPMN en el Organismo de Nutrición Infantil

    Get PDF
    Mapeo y Documentación de Procesos II: Plan de capacitación para la elaboración de BPMN y auditoría de procesos. En este Proyecto se dará seguimiento al mapeo de procesos realizado por el equipo durante el PAP I. En esta ocasión, se elaborará un plan de capacitación para que la organización sea capaz de Mapear y Auditar los procesos restantes. Esto con el objetivo de que ONI pueda terminar de realizar los diagramas BPMN 1 de los procesos faltantes que no podrán ser elaborados por el mismo equipo del PAP. Utilizando la misma metodología seguida por el equipo en el PAP I, se generarán las guías, formatos, documentos y material de apoyo necesarios para capacitar al personal elegido por ONI. Se realizarán tres sesiones de capacitación para la elaboración de diagramas BPMN, las cuales abarcarán: • La introducción al mapeo de procesos y el software a utilizar: BIZAGI. • Notaciones utilizadas: tipos y diferencias. • Ejemplos prácticos y el mapeo del Proceso de uso de ONI Móvil. Por último, se realizará un material de apoyo audiovisual que servirá como guía para poder auditar los procesos que se mapeen. Esta guía se tomará en cuenta como la cuarta sesión de capacitación. Los resultados esperados de este proyecto es que ONI uente con los conocimientos y habilidades necesarios para continuar con el mapeo de procedimientos de la Organización. Se espera que el personal seleccionado para las capacitaciones sea capaz de mapear el proceso: Entrega de ONI fórmula con implementación de ONI Móvil.ITESO, A.C
    corecore