The Evolution of the Baryon Distribution in the Universe from Cosmological Simulations

The evolution of the baryon distribution in different phases, derived from cosmological simulations, are here reported. These computations indicate that presently most of baryons are in a warm-hot intergalactic (WHIM) medium (about 43%) while at z = 2.5 most of baryons constitute the diffuse medium (about 74%). Stars and the cold gas in galaxies represent only 14% of the baryons at z = 0. For z < 4 about a half of the metals are locked into stars while the fraction present in the WHIM and in the diffuse medium increases with a decreasing redshift. In the redshift range 0 < z < 2.5, the amount of metals in the WHIM increases from 4% to 22% while in the diffuse medium it increases from 0.6% to 4%. This enrichment process is due essentially to a turbulent diffusion mechanism associated to mass motions driven by supernova explosions. At z = 0, simulated blue (late type) galaxies show a correlation of the oxygen abundance present in the cold gas with the luminosity of the considered galaxy that agrees quite well with data derived from HII regions.Comment: 12 pages, 6 figures, to be published in IJMP

Vital Sensory Kit For Use With Telemedicine In Developing Countries

In many developing countries, a large percentage of the population lacks access to adequate healthcare. This is especially true in India where close to 70% of the population lives in rural areas and has little to no access to hospitals or clinics. People living in rural India often times cannot afford to pay to see a doctor should they need to make the journey to a hospital. Telemedicine, a breakthrough in the past couple decades, has broken down the barrier between the patient and the physician. It has slowly been implemented in India to make doctors more available to patients through the use of video conferences and other forms of communication. A compact and affordable kit has been developed that will be used to take a patient’s blood pressure, heart rate, blood glucose concentration and oxygen saturation. Our most novel contribution is the non-invasive glucose sensor that will use a near-infrared LED and photodiode in the patient’s earlobe. Currently millions of diabetics do this by pricking their finger. By wirelessly sending data results from the vital sign kit, the first essential part of a treatment can be carried out via wireless communication, saving the doctor and patient time and money

Evolution of the Phase-Space Density of Dark Matter Halos and Mixing Effects in Merger Events

Cosmological N-body simulations were performed to study the evolution of the phase-space density Q = rho/sigma^3 of dark matter halos. No significant differences in the scale relations Q ~ sigma^(-2.1) or Q ~ M^(-0.82) are seen for "cold" or "warm" dark matter models. The follow up of individual halos from z = 10 up to the present time indicate the existence of two main evolutionary phases: an early and fast one (10 > z > 6.5), in which Q decreases on the average by a factor of 40 as a consequence of the randomization of bulk motions and a late and long one (6.5 > z > 0), in which Q decreases by a factor of 20 because of mixing induced by merger events. The study of these halos has also evidenced that rapid and positive variations of the velocity dispersion, induced by merger episods, are related to a fast decrease of the phase density Q.Comment: 6 pages, accepted by MNRA

Estrategia empresarial en la negociación contractual en una empresa del estado de Querétaro

Se analiza la estrategia utilizada por una empresa maquiladora del estado de Querétaro, dedicada al moldeo de piezas de polímero para la industria, en su proceso de negociación con el sindicato para flexibilizar el contrato colectivo de trabajo, con la finalidad de ampliar sus posibilidades competitivas en los mercados nacionales e internacionales. Se revisan las implicaciones subjetivas en los distintos momentos del conflicto, el acuerdo final, el impacto en las relaciones laborales de la empresa y la postura de los actores frente a la decisión adoptada. Se recurrió a la revisión de documentos de la empresa. El trabajo de campo consistió en visitas a la planta, asistiendo a reuniones de los gerentes y asambleas del gerente general con los trabajadores. Se entrevistó a los diversos actores para reconstruir la dinámica de la negociación e interpretar sus interacciones subjetivas.This work analyses a strategy used in Queretaro by an assembly plant, which molds polymer pieces for the industry, in its process of negotiation with the working union to make collective bargaining agreement flexible for the workers, with the purpose to widen the competitive possibilities of the plant in the national and international markets. Subjective implications were reviewed in the different moments of conflict, the final agreement, the impact in the working relations of the enterprise and the roles of the participants when facing the decision making. The documents of the enterprise were revised. The field work consisted in visits to the plant, attendance to the board meetings and gatherings where the general CEO and the workers met. The participants were interviewed in order to reconstruct the negotiation dynamic so the subjective interactions could be interpreted

Los programas deportivos radiofónicos en la medianoche: La supremacía del fútbol en los contenidos

Every midnight, sports programs are one of the basic references in radio programming. The three major Spanish radio networks, SER, Onda Cero and COPE, competing in the same time schedules for sports fans to win listeners. The desire to give football information sometimes comes to extreme lengths in specialized sports media, leaving other sports. This article will analyze the contents of these areas overlapping with the Christmas holiday break from football matches in Spain.Cada medianoche, los programas deportivos son uno de los referentes básicos en la programación radiofónica. Las tres principales cadenas radiofónicas españolas, SER, Onda Cero y COPE, compiten en la misma franja por ganar oyentes. El afán por dar información futbolística llega a veces hasta extremos insospechados en los medios especializados deportivos, que dejan de lado otras disciplinas deportivas. En este artículo, se analizarán los contenidos de estos espacios coincidiendo en parte con el descanso vacacional navideño de la competición futbolística en España

Hic et nunc: a Henry Corbin’s category of extistence hermeneutics

A través de la noción de hic et nunc se intenta hacer un acercamiento a la hermenéutica de Henry Corbin, entendida como experiencia de vida que abre el horizonte trascendental de la existencia. Se compara esta hermenéutica con las formas de comprensión en Asín Palacios, Massignnon y Heidegger, con algunas calas en Pablo de Tarso y Karl Barth.Through the concept of hic et nunc, this paper is an approach to Henry Corbin’s hermeneutics. This one could be undestood as an experience of life that opens the trascendental horizon of existence. It wil compared with Asín Palacios, Massignon and Heidegger’s hermeneutic; inaddition it will be introduced some reflections by Paul of Tarsus and Karl Barth

Construction: Notes on qualitative time and space

La definición conceptual del tiempo y del espacio ha producido dificultades en la filosofía clásica. Estas dificultades se agrandan cuando se trata del tiempo, que es presentado como una «noción oscura». La raíz de esta problemática se halla en que tiempo y espacio no sólo son realidades mensurables, sino también cualitativas. Este acontecimiento repercute en amplios segmentos de la existencia.The conceptual definition of time and space has given rise to some difficulties in classical philosophy. These difficulties worsen with reference to time, which is presented as an «obscure idea». The root of the problem lies in considering time and space exclusively as measurable realities. Time and space are not only quantitative, but are also qualitative, and this fact has repercussions in various areas of life

Evolution of indicators associated with the measurement of the conectivity and utility of the nets of transport

Análisis de los indicadores asociados a la organización de las redes de transporte, mediante la utilización de la teoría de grafos y el concepto de accesiblidad. Se describe la evolución de los mismos centrándonos en los métodos de demanda y en los métodos de oferta existentes en la actualidad Introducción al concepto de Plan de Movilidad y estudio de un caso concreto