Festiva vigilância (e seus descontentes): o Rio dos megaeventos

Há um debate público em curso em torno dos potenciais efeitos negativos dos mega-eventos acontecendo no Rio de Janeiro. Neste post, Jorge de La Barre contribui nesse debate discutindo a retórica dos mega-eventos na cidade e sua relação com os protestos recentes no Brasil

A festive surveillance (and its discontents): mega-events in Rio de Janeiro

There is an ongoing public debate around the potential negative effects of the mega-events being hosted by Rio de Janeiro. In this post, Jorge de La Barre contributes to this conversation by discussing the mega-event rhetoric in the city and its relation to recent protests in Brazil

Northward Looking - A Strategy and a Science Policy for Northern Development: Science Council of Canada Report No. 26 [review]

... The Council approached its study ... by (1) undertaking a review of past resource developments there and their related government policies and (2) commissioning five case studies, all dealing with large, recent projects involving non-renewable resources. It analyzes later the subject of Canadian control over the technologies used in northern development and the special problem of marine transportation of natural gas from the Arctic. ... the Science Council has produced an enormously interesting report which should serve to stimulate further analysis and discussion. ... the report's main conclusions come close to providing a reasonable and attainable northern development strategy for the forseeable future. ..

The Icefield Ranges Research Project, 1975 And 1976

During 1975 and 1976, research staff and students occupied the base camp of the Icefield Ranges Research Project (IRRP) at Kluane Lake (61 N, 138 30 W) from early April to mid-October. Altogether 126 individuals representing universities and institutes in Canada and the United States made use of the field research facilities during these two years. A decrease from 3,200 mandays of accommodation and subsistence in 1975 to 2,799 in 1976 reflected increasing difficulties in obtaining funds for field research in the North. Adverse weather in the St. Elias Mountains in 1975 caused several projects to be severely restricted. Poor radio conditions and aircraft operational problems provided further difficulties. At one time both of AINA's ski-equiped Helio-Courier aircraft were out of commission. ... In 1976, however, generally good weather conditions prevailed, radio communications were vastly improved, the aircraft remained airborne and the projects prospered. Several improvements were made to the base camp itself. ... In cooperation with Parks Canada and Environment Canada, a year-round meteorological programme was carried out during 1975 and 1976 at the base camp by the camp Manager, A. Williams. ... [The following research programs are described: High Altitude Physiology Studies (HAPS), Glacier inventory of St. Elias Mountains, Glacier geophysics projects, Environmental controls on geomorphic processes, and Study of small mammals.

The Icefield Ranges Research Project, 1974

Researchers are braving the Yukon ever earlier in the season for the Icefield Ranges Research Project (IRRP). The first group arrived at the IRRP Kluane Lake base camp (61 N, 138 W) on 15 April 1974 and the last group did not leave until 15 October. The winters of 1974 and 1975 mark the first occasion of the base camp being open year-round for two consecutive years. This innovation made possible as a result of the appointment of Mr. and Mrs. A. Williams as a resident camp-management team, is necessary scientifically because certain meteorological projects have to be conducted on a twelve-month basis, as discussed below. One hundred and four researchers and their assistants, representing nearly twenty universities, government agencies and institutions, made use of the IRRP facilities, and approximately 3,300 man-days of accommodation and subsistence were recorded. A number of improvements were made to the physical facilities; a new 24 ft x 12 ft (7.3 m x 3.7 m) utility building is now under construction, and two small trailer units have been installed by the group from the University of British Columbia as additional laboratory space for animal behavioural studies. The two ski-wheel-equipped Helio Courier aircraft of the Arctic Institute of North America performed a total of 173 hours of project-support flying, and in addition twenty hours of time of a Jet Ranger and a Hughes 400 helicopter was chartered. One of the Institute's aircraft, which was on lease to Trans North Turbo Air Limited and was engaged in commercial and tourist operations, suffered a minor accident during the field season. The largest aircraft ever to land at the base camp, a Canadian Forces Hercules transport, was used in support of the High Altitude Physiology Studies programme. ... Glacier survey project: In 1972 the Institute was awarded funds by the Glaciology Division, Department of the Environment, Ottawa, to undertake an inventory of glaciers in the St. Elias Mountains. This work was continued during 1974 by Messrs, S.G. Collins and R. Ragle. Work on the glacier basins of the Donjek River, Alsek River and Tatshenshini River was completed. To date more than 2,000 glacial features have been mapped and recorded. They concern glacier size, location and description. The Project is scheduled for completion in 1976. An extensive bibliography of the St. Elias Mountains is in preparation also and now contains more than 1,100 entries. Climatological projects: Under the direction of the Camp Manager, Mr. A. Williams, and Mr. R. Lenton of AINA, Montreal, and as part of a proposed long-range plan, two pilot climatological projects were initiated in 1974 on behalf of Environment Canada and Parks Canada. Standard and automatic stations were established in the Kluane National Park adjacent to the Slims River and at the 9,000 ft (2,700 m) Divide Station. The year-round meteorological project at Kluane Lake Base was continued in association with the Atmospheric Environment Service, Whitehorse, Y.T. ..

Experimental study of granular surface flows via a fast camera: a continuous description

Depth averaged conservation equations are written for granular surface flows. Their application to the study of steady surface flows in a rotating drum allows to find experimentally the constitutive relations needed to close these equations from measurements of the velocity profile in the flowing layer at the center of the drum and from the flowing layer thickness and the static/flowing boundary profiles. The velocity varies linearly with depth, with a gradient independent of both the flowing layer thickness and the static/flowing boundary local slope. The first two closure relations relating the flow rate and the momentum flux to the flowing layer thickness and the slope are then deduced. Measurements of the profile of the flowing layer thickness and the static/flowing boundary in the whole drum explicitly give the last relation concerning the force acting on the flowing layer. Finally, these closure relations are compared to existing continuous models of surface flows.Comment: 20 pages, 11 figures, submitted to Phys. FLuid