Electrical insulation is an important part of all electrical systems. The level of insulation safety provided by an insulator depends on the amount of leakage current flowing on its surface. Actually increased leakage current causes a part of high voltage to appear at dead end of insulator. This voltage may sometimes be of order of 1000 to 5000 Volts depending upon weather conditions. Such a le...

Reisolation of Mycobacterium bovis from inoculated substrates was used to follow the persistence of viable M. bovis bacteria exposed to natural weather conditions over a 12-month period. Environmental factors were recorded continuously, and factors affecting M. bovis persistence (i.e., temperature, season, and substrate) were studied using survival analysis and Cox's proportional hazards regres...

The 2008 Wenchuan earthquake, with a magnitude of Mw 8.0, induced numerous landslides. Remote sensing planes were sent out to take high resolution aerial photographs, from which the geologic hazards could be instantly interpreted. However, aerial images covering all of the study area could not be obtained in a short time because of the limitations of the planes and the influence of weather cond...

NASA is developing a flight deck decision support tool to support research into autonomous operations in a future distributed air/ground traffic management environment. This interactive real-time decision aid, referred to as the Autonomous Operations Planner (AOP), will enable the flight crew to plan autonomously in the presence of dense traffic and complex flight management constraints. In ass...

Climate change studies involve changes in climate system of global long-term scales with effects on regional and local climates, down to shortrange time scales, like weather hazards and extremes. Climate studies significantly contribute to the future strategic planning in economic development and thereby must produce results with high level of confidence. Global climate models simulations of th...

In the US alone, weather hazards and airport congestion cause thousands of hours of delay, costing billions of dollars annually. The task of managing delay may be modeled as a multiagent congestion problem with tightly coupled agents who collectively impact the system. Reward shaping has been effective at reducing noise caused by agent interaction and improving learning in soft constraint probl...

many more nonregistered visitors, Its varied content was described in detail in Science (beginning with the 22 September issue) and needs no repetition here. More than 1200 topics were offered for discussion. The AAAS sponsored 11 Invited Lectures: Carroll M. Williams (Harvard), Dame Kathleen Lonsdale (University of London), Athelstan Spilhaus (The Franklin Institute), Roger Revelle (Harvard), ...