Search for Exotics and Extra Dimensions at LEP

Results from various searches for new physical phenomena performed by the four LEP experiments are summarised. Topics presented include the search for contact interactions, a Z' boson, leptoquarks, excited leptons, technicolour and gravity in extra dimensions.Comment: 15 pages, 7 figures, to appear in Proceedings of the 16th International Workshop on High Energy Physics and Quantum Field Theory, QFTHEP'2001, 6-12 September 2001, Moscow, Russia; corrected one typo in reference 2

Design environment criteria Final report

Meteoroid concentration, radiation effects, earth albedo criteria, and geomagnetism affecting spacecraft desig

Simple and effective method to lock buoy position to ocean currents

Window-shade drogue, used with drifting buoys to keep them moving with current at speed as close to that of current as possible, has drag coefficient of 1.93 compared to maximum of 1.52 for previous drogues. It is remarkably simple to construct, use, and store

Dealing with Major Technological Risks

This article is concerned with the management of major hazards stemming from technology and entailing potentially dreadful consequences. It proposes a brief survey of the0501n difficulties and policy issues arising both in public and private decision making when dealing with major technological risks. Three themes are considered: risk assessment, risk sharing and risk control. Issues related to evaluation methods, to risk perception and to the acceptable level of risk are first examined. The article then goes on to explore the problem of optimal risk sharing between the different stakeholders. The firm's liability and extended liability to the firm's partners are considered. Insurance issues are also discussed. Lastly, the survey addresses the control of risks both from a prevention and from a damage mitigation point of view. The various instruments available to the State to reduce risks are reviewed and several issues are also raised with respect to the measures firms can take to reduce risks. Investment in safety, human error, organisational design and information disclosure are addressed in this section. The topics of siting and urban planning are analysed as mitigation strategies, and the important aspect of emergency planning ends the survey. Cet article d'intérêt général porte sur la gestion des risques d'origine technologique aux conséquences potentiellement catastrophiques. Il s'agit d'un document de synthèse destiné à cerner les problèmes fondamentaux en matière de gestion publique et privée des risques technologiques majeurs. Trois thèmes y sont traités: l'évaluation, la distribution et le contrôle des risques. Les questions se rapportant aux méthodes d'évaluation, à la perception des risques et aux difficultés liées à l'établissement d'un seuil de tolérance sont d'abord passées en revue. La seconde partie du document met en lumière les difficultés que présente le partage optimal du risque entre les différents agents. La responsabilité civile de la firme et de ses partenaires est alors examinée. Les problèmes liés à l'assurance contre ce type de risque sont aussi brièvement décrits. Cet article traite enfin du contrôle des risques en couvrant à la fois les approches préventives et les stratégies d'atténuation des dommages. On y aborde premièrement les instruments de contrôle dont dispose l'État pour réduire les risques. Du côté des firmes, les sujets tels que l'investissement en sécurité, l'erreur humaine, le design organisationnel et la divulgation de l'information sont passés en revue. L'aménagement du territoire et la gestion des urgences sont ensuite abordés de façon succincte dans la dernière partie de l'article.Safety, major risks, risk assessment, risk sharing, risk control, prevention, mitigation, Sécurité, risques majeurs, évaluation des risques, distribution des risques, contrôle des risques, prévention, atténuation

An overview of large wind turbine tests by electric utilities

A summary of recent plants and experiences on current large wind turbine (WT) tests being conducted by electric utilities is provided. The test programs discussed do not include federal research and development (R&D) programs, many of which are also being conducted in conjunction with electric utilities. The information presented is being assembled in a project, funded by the Electric Power Research Institute (EPRI), the objective of which is to provide electric utilities with timely summaries of test performance on key large wind turbines. A summary of key tests, test instrumentation, and recent results and plans is given. During the past year, many of the utility test programs initiated have encountered test difficulties that required specific WT design changes. However, test results to date continue to indicate that long-term machine performance and cost-effectiveness are achievable

Saturated system behavior - Surface boiling and controlled blowdown Final report

Surface and static pressure effects on nucleate pool boiling, and depressurization response of saturated syste