1,191 research outputs found

    Chaotic enhancement of dark matter density in binary systems

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    We study the capture of galactic dark matter particles (DMP) in two-body and few-body systems with a symplectic map description. This approach allows modeling the scattering of 101610^{16} DMPs after following the time evolution of the captured particle on about 10910^9 orbital periods of the binary system. We obtain the DMP density distribution inside such systems and determine the enhancement factor of their density in a center vicinity compared to its galactic value as a function of the mass ratio of the bodies and the ratio of the body velocity to the velocity of the galactic DMP wind. We find that the enhancement factor can be on the order of tens of thousands.Comment: 6 pages, 9 figure

    Safer Streets: Cutting Repeat Crimes by Juvenile Offenders.

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    FIGHT CRIME: INVEST IN KIDS is an anti-crime organization led by more than 3,500 law enforcement leaders -- chiefs, sheriffs and prosecutors -- and survivors of crime. Most of the survivors are parents of murdered children. Crime requires punishment. Punishment may be placing a young offender in custody, or, depending on the crime, imposing a range of other tough sanctions. The bottom line is that residents must be safe walking the streets. Research shows, however, that punishment alone will often not be enough; troubled teens will need help to stop their aggression, substance abuse, or other anti-social behaviors. It is usually not too late to change anti-social patterns of behavior. Sanctions that include strict and effective interventions can direct anti-social and dangerous juveniles onto a different path that will make Americans safer

    Influence of Cooperative Wildlife and Fishery Units On Graduate Education and Professional Employment

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    In June 1982, several private conservation organizations will join the Iowa State University, and the Iowa Conservation Commission, in a 50-year celebration of the Cooperative Research Unit concept. The first Cooperative Wildlife Research Unit began there in 1932 in response to a recognized need for trained biologists and scientific information in the field of wildlife conservation. The unique partnership between federal, state, university, and private entities that resulted, evolved into the current nationwide program. There are currently 21 wildlife units, 26 fishery units, and 3 combined fish and wildlife units at 31 universities in 29 states (Figure O. The Fishery Research Units were added in 1960, and the program is still supported as a truly cooperative venture between the Fish and Wildlife Service, universities, state fish and wildlife agencies, and the Wildlife Management Institute. The Wildlife Management Institute is a cooperator in 21 Wildlife and 3 Fish and Wildlife Research Units

    EC88-785 Traffic Emergencies ... Prepare for Them!

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    So you\u27re taking a trip. How far? To town, to the fair or to a football game? Perhaps it\u27s a vacation trip of hundreds of miles. Whatever the distance, prepareation is important. This circular discusses the things that you should know and have for your trip. Your credentials and equipment should be up-to-date at all times so if you have to leave for a long trip on a moment\u27s notice you will be ready

    Research and training in the Olifants and Limpopo basins of southern Africa

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    L'article décrit la participation des chercheurs français, détachés à l'Institut international de la gestion des ressources en eau (IWMI) par le ministère français de l'Agriculture, aux travaux concernant les bassins hydrographiques de référence Olifants et Limpopo, entrepris dans le cadre du Programme pour relever les défis « Eau et alimentation ». Les scientifiques français mis à la disposition de l'IWMI ne sont pas seulement investis dans les dimensions économiques, géographiques et agronomiques de ces programmes de recherche et de formation, ils contribuent également à la coordination des différents programmes dans les bassins hydrographiques et à l'amélioration de leur coordination. / This paper describes the contribution of the French researchers seconded to International Water Management Institute (IWMI) by the French Ministry of Agriculture in the Olifants and Limpopo benchmark basins of the Challenge Program on Water and Food. The French researchers made available to IWMI are not only involved in the economic, geographic and agronomic aspects of these projects, but also participate in coordinating and developing synergy between different projects in the basins.GESTION DE L'EAU;RECHERCHE;FORMATION PROFESSIONNELLE;AFRIQUE DU SUD;RESEARCH;TRAINING;WATER MANAGEMENT;SOUTHERN AFRICA

    EC80-718 Caution : Look Up! Power Lines May Be Overhead

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    Extension circular 80-718 is about power lines may be overhead

    EC88-785 Traffic Emergencies ... Prepare for Them!

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    So you\u27re taking a trip. How far? To town, to the fair or to a football game? Perhaps it\u27s a vacation trip of hundreds of miles. Whatever the distance, prepareation is important. This circular discusses the things that you should know and have for your trip. Your credentials and equipment should be up-to-date at all times so if you have to leave for a long trip on a moment\u27s notice you will be ready

    EC77-719 Safety with Center Pivot Irrigation

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    Extension Circular 77-719 is about center irrigation pivots and how to safely use them

    EC80-718 Caution : Look Up! Power Lines May Be Overhead

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    Extension circular 80-718 is about power lines may be overhead
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