Revista informativa adulto mayor.

Tesis (Ingeniero Industrial)1 INTRODUCCIÓN: 1.1 Antecedentes Generales Una de las características que sobresale en nuestros tiempos es el cambio derivado principalmente de los avances científicos y tecnológicos, y a su vez, su aplicación a la vida del hombre. Esto ha producido importantes modificaciones a la vida en sociedad en periodos relativamente breves, lo que ha llevado a una prolongación de la vida del ser humano. Si a esto agregamos los programas de control de natalidad, resulta en una modificación importante en la composición longeva de la población. Esto ha ocurrido aceleradamente en Europa y América del Norte, en donde el Adulto Mayor ha logrado ser influyente en el consumo y los servicios, los temas dirigidos a la salud y el bienestar físico, el ocio, el entretenimiento, el ahorro, los servicios de atención y apoyo a los mayores son de gran importancia, existe demanda de libros y revistas, de teátros y cines, de la industria turística, de los remedios, de los departamentos para vivir, suplementos nutritivos, los gimnasios, los productos y actividades destinados a mantener la apariencia juvenil. El mercado donde se despliega el Adulto Mayor se mueve, podemos reconocer tribus de personas mayores. El Adulto Mayor es un consumidor importante y en crecimiento. Esta transformación ha sorprendido a una sociedad con una imagen de juventud -(poco visionaria por las personas de mayor edad) y solo en los últimos años el tema del Adulto Mayor ha pasado a ser parte de la preocupación pública. Parte importan~del tratamiento a este problema social (imagen de juventud) lo constituye el cambio en la percepción cultural de la vejez, lo que implica un cambio de actitud hacia esta etapa de la vida, tanto en generaciones más jóvenes, como de los mismos Adultos Mayores, es decir nos encontramos en una etapa de inserción de Conocimiento social

Measuring academic learning and exam self-efficacy at admission to university and its relation to first-year attrition: an IRT-based multi-program validity study

Self-efficacy is associated with both academic performance and attrition in higher education. Whether it is possible to measure students’ academic self-efficacy after admission and prior to commencing higher education (i.e. pre-academic self-efficacy) in a valid and reliable way has hardly been studied. Aims: 1) to evaluate the construct validity and psychometric properties of two short scales to measure Pre-Academic Learning Self-Efficacy (PAL-SE) and Pre-Academic Exam Self-Efficacy (PAE-SE) using Rasch measurement models, 2) to investigate whether pre-academic self-efficacy was associated with half-year attrition across degree programs and institutions. Data consisted of 2686 Danish students admitted to nine different university degree programs across two institutions. Item analyses showed both scales to be essentially objective and construct valid, however, all items from the PAE-SE and two from the PAL-SE were locally dependent. Differential item functioning was found for the PAL-SE  relative to degree programs. Reliability of the PAE-SE was .77, and varied for the PAL-SE  from .79 to .86 across degree programs. Targeting was good only for the PAL-SE, thus we proceeded with the PAL-SE. PAL-SE was found to be associated with half-year attrition: A difference in PAL-SE from minimum to maximum was associated with a difference in half-year attrition of approximately 7%. This association was found both in the bivariate model and in the multivariate models with control of degree program, and with control of degree program and individual covariates such as earlier educational achievement and social background variables. Results thus also indicate that PAL-SE has a causal effect on half-year attrition

From bench scale to pilot plant: A 150x scaled-up configuration of a microwave-driven structured reactor for methane dehydroaromatization

Microwave-assisted gas-phase conversion on structured catalysts is emerging as a promising process intensifi-cation technology in the field of heterogeneous catalysis. The combination of selective heating and structured catalytic materials induces a temperature difference between the heated catalytic sample and the surrounding void regions to avoid non-selective gas-phase reactions. This operational principle allowed inhibiting thermal cracking in alkane dehydrogenation processes as well as retarding catalyst deactivation by coking in methane dehydroaromatization (MDA) processes. However, its effectiveness has not been reported so far out of the lab-oratory scale conditions. This work addresses the scaling of the microwave-assisted MDA process from lab scale experiments to a scaled-up configuration capable of stable operation with a 150-fold higher feeding rate. The scaling-up potential and main obstacles to overcome for this technology are critically discussed. In addition, a techno-economic assessment of the MW-MDA process is presented. The catalytic activity was kept for seven consecutive reaction cycles, i.e. 35 h MW-MDA, prior to a progressive decay due to permanent deactivation caused by zeolite dealumination and active metal loss. The scaled set-up operated for up to 295 consecutive hours under unmanned operation conducting 4 -h MDA-regeneration cycles on Mo/ZSM-5@SiC monoliths and resulting in 125-fold increase of converted methane and a 450-fold increase of benzene (0.17 LC6H6/h) in comparison with the laboratory scale tests. Scaled set-up experiments were run using only a 6-fold microwave input power, thus, highlighting the non-linearity between energy consumption and scaling factor for this tech-nology and the importance of microwave cavity design

Palaeomagnetism of three dyke swarms in Nansen Land, north Greenland (83° N)

Three basic dyke swarms of post-Ellesmerian (post-Early Carboniferous) age in Nansen Land (83° N, 43° W) are still not dated numerically, but cross-cutting relationships show Group 1 to be older than Group 2, while Group 3 is the freshest and likely the youngest. Group 1 (the most northerly swarm) strikes N-S; Group 2 NW-SE, and Group 3 (the most southerly swarm) E-W. From more than 200 dykes 234 specimens from 28 sites were investigated palaeomagnetically. Group 1 dykes show unexpected shallow inclinations with a cleaned mean direction of (Dm, Im) = (151°, −5.8°), N = 7, k = 18.5, α 95 = 13.9°. They show hydrothermal alterations, some remagnetization by lightning, and the low inclination indicates a low palaeo latitude. The palaeopole is (Plat, Plon) = (8.9° S, 14.0° W) with (dp, dm) = (7°, 14°), and is close to the North American Early Carboniferous mean pole, suggesting a syn- or early late-tectonic dyke injection. The polarity is reverse. Groups 2 and 3 of presumed Cretaceous or Tertiary age show dominantly normal and reverse polarities, respectively. Their mean directions per polarity are well grouped, with (Dm, Im) = (−30.6°, 76.7°), n = 13, k = 191.4, α 95 = 3.9°, and (Dm, Im) = (133.4°, −76.7°), n = 10, k = 87.5, α 95 = 5.9°, respectively. They are antipodal within 95% significance, and combining both swarms gives (Dm, Im) = (−37.5°, 76.8°), n = 23, k = 124.3, α 95 = 2.7°, corresponding to a mean pole of (Plat, Plon) = (70.0° N, 185.1° E) with (dp, dm) = (4.7°, 5.0°), for which the spline of Late Cretaceous-Tertiary poles for all Greenland indicates a palaeomagnetic age of 57 ± 10 Ma. This pole (in present-day coordinates) is very close to the Late Cretaceous North American pole, in accordance with the fact that Greenland belongs to the North American craton, and that the two younger swarms are essentially postdating the opening of Baffin Bay.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/43921/1/11288_2004_Article_147530.pd

Medical eponyms

Eponyms are a long-standing tradition in medicine. Eponyms usually involve honoring a prominent physician scientist who played a major role in the identification of the disease. Under the right circumstances, a disease becomes well known through the name of this individual. There are no rules on eponym development. It may take an extraordinary period of time, be different in different languages and cultures, and evolve as more is known about the physician or the disease

Revista informativa adulto mayor

Tesis (Ingeniero Industrial)Establecer las carencias informativas de los adultos mayores de la Región Metropolitana fue uno de los desafíos más importantes. Y trabajar directamente con ellos también fue muy enriquecedor, tanto a nivel profesional como personal. Los adultos mayores son personas llenas de energía, encanto, con ganas de participar, innovar y por sobre todo, seguir contribuyendo a la sociedad. En el desarrollo del proyecto se comprobó que los adultos mayores sí desean un medio de comunicación escrito que difunda sus principales necesidades informativas y que priorice una vida sana activa y llena de entretención. Además, los municipios reconocieron la importancia de contar con un medio de estas características y la inmensa ayuda que significaría para este grupo. Se concluye que este proyecto posee una importante ayuda social no tan solo al grupo adulto mayor, sino que también a todo grupo etario interese en un mejor vivir para cuando se encuentre en esa etapa de la vida