1,722,345 research outputs found
How I Home-Built an Electricity Producing Wind Turbine
No full textThis website includes step-by-step instructions on how to build a wind turbine with parts users may purchase at harware stores. The website includes photographs and text which illustrate how to build the wind turbine
Cannibalism and Nature
No full textDavis Michael. Cannibalism and Nature. In: Mètis. Anthropologie des mondes grecs anciens, vol. 4, n°1, 1989. pp. 33-50
The potential for vertical gardens as evaporative coolers: An adaptation of the ‘Penman Monteith Equation’
No full textThis research paper investigates the use of vertical gardens as evaporative coolers. Vertical gardens play a key role in tackling the increasing challenges cities face, due to a rapidly growing urban environment with associated reductions in vegetation and an increase in the urban heat island effect. This paper aims to develop a mathematical model based on the FAO-56 Penman Monteith Equation that quantifies the effects of vertical gardens for evaporative cooling. The theoretical results are then compared with empirical findings for the experimental setup undertaken by Davis & Ramirez [1], which involved passing air behind the vertical garden (between the substrate and the surface). Correlation is observed when the computed value is at the lowest humidity (35%) of the three test runs (35%, 40%, and 45%). This either indicates that the vertical garden performs better than predicted by the mathematical model, or the relative humidity at the time when the measurements were made was in the region of 35% instead of the predicted 40%. This research indicates the potential for the FAO-56 Penman Monteith Equation to be integrated into a future design tool that facilitates the application of vertical gardens as evaporative coolers in building designs
Etats-Unis
No full textDavis Michael H. Etats-Unis. In: Annuaire international de justice constitutionnelle, 4-1988, 1990. Les juges constitutionnels. pp. 133-139
Freedom of communication : the american approach
No full textDavis Michael H. Freedom of communication : the american approach. In: Annuaire international de justice constitutionnelle, 3-1987, 1989. La liberté de l'information. pp. 309-316
The Supreme Court Term 1986-87
No full textDavis Michael H. The Supreme Court Term 1986-87. In: Annuaire international de justice constitutionnelle, 4-1988, 1990. Les juges constitutionnels. pp. 367-372
La liberté d'information : l'approche américaine
No full textDavis Michael H. La liberté d'information : l'approche américaine. In: Annuaire international de justice constitutionnelle, 3-1987, 1989. La liberté de l'information. pp. 301-308
Más allá del petróleo: Una mirada al impacto de los autos eléctricos en las tres principales ciudades del Ecuador
No full textThe purpose of this paper is to study the impact of changing private vehicles in Ecuador’s three main cities from combustion engines to their electric counterparts, and to assess whether the newly created electricity demand could be met by renewable energies located within the city boundaries. The work studies Ecuador’s three main cities: Quito, Guayaquil and Cuenca. It was found that in theory and in the extreme case, if there were a sudden change where all the cars and SUVs of Quito were to be replaced by electric vehicles, an electricity demand would be created that could be satisfied through roof installed solar PV within the city boundaries. It would not be feasible however, to do this through wind power. Overall, it was recognised that in reality the changeover to electric vehicles is not likely to be sudden, plus that a transition to electric cars and SUVs only works towards partially solving the problem of fossil fuel demands from the transport sector, but has little impact on the issue of congestion and space requirements. As such, mass transit, multi-modal, electric transport systems have an important role to play in this context for the next stage of research.Keywords: electric cars, private vehicles, public transport, renewable energies, Urban Metabolism.El propósito de este trabajo es estudiar el impacto del cambio de vehículos privados en las tres principales ciudades de Ecuador, y evaluar si la demanda de electricidad creada podría ser satisfecha por energías renovables ubicadas dentro de los límites de la ciudad. El trabajo estudia las tres principales ciudades del Ecuador: Quito, Guayaquil y Cuenca. Se encontró que en teoría y en el caso extremo, si hubiese un cambio repentino donde todos los autos y VUDs de Quito serían reemplazados por vehículos eléctricos, se crearía una demanda de electricidad que podría satisfacerse a través la energía solar fotovoltaica dentro los límites de la ciudad. Esto estaría en línea con la teoría del metabolismo urbano. Sin embargo, no sería factible, hacer esto a través de la energía eólica. En general, se reconoció que en la realidad habría una transición más lenta hacia el uso de vehículos eléctricos, que resolvería parcialmente la demanda de combustibles fósiles del sector de transporte, con poco impacto en la problemática de congestión y la demanda de espacio. Como tal, los sistemas de transporte colectivo y de transporte multimodal tienen un importante papel que desempeñar en este contexto para la siguiente etapa de la investigación.Palabras clave: carros eléctricos, energías renovables, metabolismo urbano, transporte público, vehículos privados
Dix ans d’efforts pour former une démocratie à Hong Kong
No full textDavis Michael C., Charmant Catherine. Dix ans d’efforts pour former une démocratie à Hong Kong. In: Perspectives chinoises, n°99, 2007. pp. 28-33
- …
