A 7.6m /25-ft/ extreme environments simulator

Stainless steel cylindrical simulation chamber permits testing equipment under extreme cold, high partial vacuums, and intense solar radiation. Applications include heat balance and temperature distribution studies, investigations of subsystem interactions, tests of attitude control equipment and sensors, and acceptance tests of complete systems

Pulsed plasma accelerator operates repetitively without complex controls

Self-repeating pulsed plasma accelerator operates with a wide variety of gases over a large range of pressures without complex control equipment. The accelerator combines a circular channel with a tangential channel at the entrance way of a high-velocity gas

Selected air pollution control equipment : 1998

Current industrial report. Contains annual data for selected air pollution control equipment produced in the United State

Selected air pollution control equipment : 1997

Current industrial report. Contains annual data for selected air pollution control equipment produced in the United State

Monitor and control equipment for the MV-3 mobile very long baseline interferometry station

The system, designed around a commercially available process controller, is described. The hardware design, selection of the process control equipment, the design of the interface to other systems, and the analog monitor and process control assembly used to operate the equipment from the MV-3 central computer are discussed

An evaluation of the Psychosocial Impact of Assistive Devices Scale

The West Midlands Rehabilitation Centre (WMRC) is responsible for the National Health Service provision and maintenance of Environmental Control Equipment to patients across the West Midlands Region, England. It is important to measure outcome of provision using a paradigm that has meaning for those patients. The Psychosocial Impact of Assistive Devices Scale is a 26-item, self-rating questionnaire designed to measure user perceptions of how assistive devices affect quality of life. This outcome measure is being evaluated in the West Midland

Intelligent monitoring of the health and performance of distribution automation

With a move to 'smarter' distribution networks through an increase in distribution automation and active network management, the volume of monitoring data available to engineers also increases. It can be onerous to interpret such data to produce meaningful information about the health and performance of automation and control equipment. Moreover, indicators of incipient failure may have to be tracked over several hours or days. This paper discusses some of the data analysis challenges inherent in assessing the health and performance of distribution automation based on available monitoring data. A rule-based expert system approach is proposed to provide decision support for engineers regarding the condition of these components. Implementation of such a system using a complex event processing system shell, to remove the manual task of tracking alarms over a number of days, is discussed

EFFICIENCY LOSS AND TRADABLE PERMITS

This research presents a price endogenous mathematical programming model that incorporates the independent, optimizing behavior of individual participants to estimate the possible efficiency loss of a newly developed permit trading market for nitrogen oxides (NOx) control in southern Taiwan. The result shows that when control equipment decisions are indivisible, an efficiency loss may arise due to over-investment. The efficiency loss found here is not because of a bilateral trading process and/or insufficient information for finding trading partners, but it is due to not having full control ability of the installed equipment.Environmental Economics and Policy,

Enforcement of Vintage Differentiated Regulations: The Case of New Source Review

�This paper analyzes the effects of the New Source Review (NSR) environmental regulations on coal-fired electric power plants. �Regulations that grew out of the Clean Air Act of 1970 required new electric generating plants to install costly pollution control equipment but exempted existing plants with a grandfathering clause. �Existing plants lost their grandfathering status if they made ``major modifications'' to their plants. �We examine whether this caused firms to invest less in their old plants, possibly leading to lower efficiency and higher emissions. We find some evidence that the risk of NSR enforcement reduced capital expenditures at plants. However, we find no discernable effect on the operating costs, fuel efficiency or emissions of these plants.�New Source Review; Environmental Regulations; productivity; and Electricity

Furnace and support equipment for space processing

A core facility capable of performing a majority of materials processing experiments is discussed. Experiment classes are described, the needs peculiar to each experiment type are outlined, and projected facility requirements to perform the experiments are treated. Control equipment (automatic control) and variations of the Czochralski method for use in space are discussed