JPL Ephemeris Tapes E9510, E9511, and E9512

The first issue of JPL Ephemeris Tapes is described. These tapes carry the positions and velocities of the planets and of the Moon, plus nutations and nutation rates in longitude and obliquity, together with second and fourth modified differences, for the interval December 30, 1949, to January 5, 2000

Illegal Homeless Encampments In California: Using The COM-B Framework to Transform A Public Health Nuisance Into A New Housing Development Model

California has the highest homeless population, with over 161,000 people experiencing homelessness. Despite approving a billion dollars in grants for the 2018-2019 budget, The 2021 Annual Homeless Assessment Report (AHAR) to Congress revealed California had an increase of over 3,500 individuals staying in shelters between 2020-2021. The multi-faceted and multi-dimensional issues of homelessness and policies make it difficult to prevent individuals experiencing homelessness from living in illegal encampments. Therefore, the author proposes a multi-prong approach to homelessness in California grounded in theories of the Socio-Ecological Model (SEM) and COM-B model and informed by housing first and permanent supportive housing practices. There are two objectives for the recommendations discussed in this paper. The primary aim is to provide alternative permanent supportive housing options for the homeless population, thus reducing illegal encampments. The secondary objective is to create a space for researchers to collect necessary data to fill the gaps discovered in the literature, thus equipping policymakers with enough data to make informed decisions on policies affecting the homeless population. Achieving the two objectives require innovative permanent supportive housing options for individuals experiencing homelessness. The author proposes California develop state-ran authorized homeless camps as an innovative permanent supportive housing option–a whole system approach with intensive targeted health and social interventions to support the whole person care model

A low complexity iterative channel estimation and equalisation scheme for (data-dependent) superimposed training

Channel estimation/symbol detection methods based on superimposed training (ST) are known to bemore bandwidth efficient than those based on traditional time-multiplexed training. In this paper we present an iterative version of the ST methodwhere the equalised symbols obtained via ST are used in a second step to improve the channel estimation, approaching the performance of the more recent (and improved) data dependent ST (DDST), but now with less complexity. This iterative ST method (IST) is then compared to a different iterative superimposed training method of Meng and Tugnait (LSST).We show via simulations that the BER of our IST algorithm is very close to that of the LSST but with a reduced computational burden of the order of the channel length. Furthermore, if the LSST iterative approach (originally based on ST) is now implemented using DDST, a faster convergence rate can be achieved for the MSE of the channel estimates

Introducción

Introducción de la revista Renglones número 4 con el tema Empresa y trabajo. El contenido de este número está formado por cinco artículos centrales: dos que se refieren a empresarios y dirigentes, otros dos a trabajadores y uno más a la política industrial.ITESO, A.C

Guía para cinéfilos descarriados

Guía sobre las salas de cine de Guadalajara. Se describen sus características físicas, su ubicación, los precios, la calidad de sus proyecciones, su programación, el tipo de filmes que pasan y de qué nacionalidad. Se hacen distinciones entre los cines comerciales, los independientes, los especializados, lo que proyectan películas de arte y los cineclubs.ITESO, A.C

Clonar o no humanos. ¿Es el dilema?

Los avances en el campo de la clonación abren nuevas posibilidades y presentan riesgos para la ciencia, la salud y la vida social en general. Ante esta situación y los prejuicios anticientíficos de no pocos gobernantes y grupos fundamentalistas, cada vez es más necesario el conocimiento sobre este tema.ITESO, A.C