Assembly journal /

Vols. for <1985/86-> called also: Permanent white journals, pt. 2, Assembly.

Gaceta de Caracas.

Mode of access: Internet.

Acts of the State of Ohio.

Includes extraordinary and special sessions.

Reports of cases argued and determined in the Supreme Court of the state of Vermont : reported by the judges of said court, agreeably to a statute law of the state.

Imprint varies.

Development of an electric heat pump for domestic use

This thesis records the design and development of an electrically driven, air to water, vapour compression heat pump of nominally 6kW heat output, for residential space heating. The study was carried out on behalf of GEC Research Ltd through the Interdisciplinary Higher Degrees Scheme at Aston University. A computer based mathematical model of the vapour compression cycle was produced as a design aid, to enable the effects of component design changes or variations in operating conditions to be predicted. This model is supported by performance testing of the major components, which revealed that improvements in the compressor isentropic efficiency offer the greatest potential for further increases in cycle COPh. The evaporator was designed from first principles, and is based on wire-wound heat transfer tubing. Two evaporators, of air side area 10.27 and 16.24m2, were tested in a temperature and humidity controlled environment, demonstrating that the benefits of the large coil are greater heat pump heat output and lower noise levels. A systematic study of frost growth rates suggested that this problem is most severe at the conditions of saturated air at 0oC combined with low condenser water temperature. A dynamic simulation model was developed to predict the in-service performance of the heat pump. This study confirmed the importance of an adequate radiator area for heat pump installations. A prototype heat pump was designed and manufactured, consisting of a hermetic reciprocating compressor, a coaxial tube condenser and a helically coiled evaporator, using Refrigerant 22. The prototype was field tested in a domestic environment for one and a half years. The installation included a comprehensive monitoring system. Initial problems were encountered with defrosting and compressor noise, both of which were solved. The unit then operated throughout the 1985/86 heating season without further attention, producing a COPh of 2.34.

A longitudinal study of Project Trio: A dropout prevention program in a large urban environment

The subject of dropout prevention/reduction is deservedly receiving attention as a problem that, if not resolved, could threaten our national future.^ This study investigates a small segment of the overall dropout problem, which has apparently unique features of program design and population selection. The evidence presented here should add to the knowledge bank of this complicated problem.^ Project Trio was one of a number of dropout prevention programs and activities which were conducted in Dade County school years 1984-85 and 1985-86, and it is here investigated longitudinally through the end of the 1987-88 school year. It involved 17 junior and senior high schools, and 27 programs, 10 the first year and 17 the second, with over 1,000 total students, who had been selected by the schools from a list of the "at risk" students provided by the district, and were divided approximately evenly into the classical research design of an experimental group and the control group, which following standard procedure was to take the regular school curriculum. No school had more than 25 students in either group.^ Each school modified the basic design of the project to accommodate the individual school characteristics and the perceived needs of their students; however all schools projects were to include some form of academic enhancement, counseling and career awareness study.^ The conclusion of this study was that the control group had a significantly lower dropout rate than the experimental group. Though impossible to make a certain determination of the reasons for this unexpected result, it appears from evidence presented that one cause may have been inadequate administration at the local level.^ This study was also a longitudinal investigation of the "at risk" population as a whole for the three and four year period, to determine if academic factors were present in records may be used to identify dropout proneness.^ A significant correlation was found between dropping out and various measures including scores on the Quality of School Life Instrument, attendance, grade point averages, mathematics grades, and overage in grade, important identifiers in selection for dropout prevention programs. ^

Documentation of sediment core PS1392-1

The Late Quaternary sediment sequence of the continental margin in the eastern Weddell Sea is well suited for palaeoenvironmental reconstructions. Two cores from the upper slope, which contain the sedimentary record of the last 300 ky, have been sedimentologically investigated. Age models are based on lithostratigraphy and are correlated with the stable isotope record. As a result of a detailed analysis of the clay mineral composition, grain size distributions and structures, this sedimentary record provides the first marine evidence that the Antarctic ice sheet extended to the shelf edge during the last glacial. The variations in volume and size of the ice sheet were also simulated in numerical models. Changes in accumulation rate and ice temperature are of some importance, but the model revealed that fluctuations are primarily driven by changes in eustatic sea-level and that the ice edge extended to the shelf edge during the last glacial maximum. This causal relationship implies that the maximum ice extension strongly depends on the magnitude and duration of the sea-level depression during a glacial period. The results of the sedimentological investigations and of the numerical models show that the Antarctic ice sheet follows glacial events in the northern hemisphere by teleconnections of sea level.

"¿Existe una nueva generación historiográfica en Costa Rica?"

Introducción Nuestra nueva sección de “Debates” aborda el problema de si existe o no una nueva generación historiográfica en Costa Rica y, en todo caso, cómo han de caracterizarse los cambios suscitados –a partir de la década de 1970– en la manera de enfocar y escribir la historia costarricense. Este debate continuará en el próximo número, y esperamos que las respuestas susciten controversia y puntos de vista complementarios que permitan profundizar el análisis…

Surgimiento de una nueva generación

Introducción Creemos que a partir de la década de 1970 se comenzó a dar una serie de nuevas condiciones que permitieron el surgimiento de una nueva generación de historiadores en Costa Rica.

¿Una nueva generación de historiadores?

Introducción A esta pregunta, habría que contestar mediante un razonamiento, que no se puede escribir en una página. En efecto, la respuesta involucra numerosas facetas que deben ser aclaradas, para intentar satisfacer al interrogador. El término generación que aquí se plantea, lo consideramos integrado al concepto de Ortega y Gasset, razón por la cual deberemos empezar a clarificarlo. Según Ortega: “Las variaciones de la sensibilidad vital que son decisivas en historia se presentan bajo la forma de generación. Una generación no es un puñado de hombres egregios ni simplemente una masa: es como un nuevo cuerpo social integro como su maniobra selecta y su muchedumbre, que ha sido lanzado sobre el ámbito de la existencia con una trayectoria vital determinada. La generación, compromiso dinámico entre masa en individuos, es el concepto más importante de la historia, y por decirlo así, el gozne sobre el que ésta ejecuta sus movimientos” Para Ortega el caráter dinámico del término obedece al sentimiento del individuo como ser individualizado, lo que hace que al hablar de generación sea preciso a la vez destacar el carácter de “sensibilidad social” de que él habla, como fenómeno primario de la historia…

Elites y Hasbur entre las coyunturas económicas del siglo XVIII en Centroamérica

Resumen Estudia la dinámica económica del siglo XVII en Centroamérica, desde el punto de vista de la producción y el comercio. Aborda el problema de la existencia o no de una depresión generalizada en la región durante ese período, y lo contrasta con el siglo anterior y posterior

Un mito de la sociedad costarricense: el culto a la Virgen de los Ángeles

Introducción Dentro de la mentalidad religiosa de los costarricenses durante el periodo estudiado, el culto a la Virgen de los Ángeles ocupa un lugar primordial. En este artículo se analiza la manipulación política de este hecho mítico por distintos grupos sociales, y la manera en que las clases subalternas han practicado una serie de manifestaciones fetichistas, que se enfocarán aquí como un subproducto religioso.

Los inmigrantes y el poder en Costa Rica

Resumen: Describe y analiza la inmigración alemana, inglesa y estadounidense a Costa Rica, desde la independencia hasta la Primera Guerra Mundial, Explica algunas relaciones con procesos económicos y políticos del periodo, especialmente en lo referente a la actividad cafetalera y a la élite