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National Evaluation of the Safe Kids/Safe Streets Program: Final Report. Volume 4. Survey of Agency Personnel.

作者:科技文献资料网 时间:2018-10-19 10:32:08  浏览:8609   来源:科技文献资料网
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[文献类型]:科技报告
[标题]:National Evaluation of the Safe Kids/Safe Streets Program: Final Report. Volume 4. Survey of Agency Personnel.
[作者]:F. Gragg; R. Cronin; D. Schultz; K. Eisen;
[机构]:Westat, Inc., Rockville, MD.*Department of Justice, Washington, DC. Office of Juvenile Justice and Delinquency Prevention.
[关键词]:child abuse,child neglect,juvenile delinquency,safe kids/safe streets (sk/ss),children, risk factors, planning, implementation, outcomes, sites, case studies, lessons learned, surveys,
[出版年份]:2009
[报告时间]:30 Dec 2004,
[页码]:64p
[馆藏索取号]:PB2009100167
[总页数]:64


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[唯一标识符]:CDSITC.AEROSPACE.A92-12316
[文献来源]:美国航空航天数据库(aerospace)
[资源原始索取号]:A1992-12316; Reference AN: A92-12316
[标题]:Open resonator for precision dielectric measurements in the 100 GHz band
[作者]:KOMIYAMA B; KIYOKAWA M; MATSUI T
[来源]:IEEE-Transactions-on-Microwave-Theory-and-Techniques. vol. 39, Oct. 1991, p. 1792-1796. Research supported by Science and Technology Agency.
[文摘]:Dielectric properties of fused silica, MgO, AlN, and BN were measured using an open resonator at frequencies around 100 GHz. The resonator is of the semifocal type and consists of a concave and a plane mirror, and the frequency variation method is used. To increase the reliability of measurement data, the operating frequency and thickness of the samples were chosen so as to make the parameter Delta = 1 for every sample. The radius of curvature of the concave mirror is deduced with sufficient accuracy from the resonant frequencies of the transverse-electric-mode TEM0.0 and TEM1.0 modes, which results in a precise determination of resonator length. The standard deviation of measurements was less than 0.1 percent in permittivity and about 10 percent in loss tangent. (I.E.)
[关键词]:DIELECTRIC PERMEABILITY; ELECTRICAL MEASUREMENT; MICROWAVE FREQUENCIES; MICROWAVE RESONANCE; ALUMINUM NITRIDES; BORON NITRIDES; MAGNESIUM OXIDES; SIGNAL TO NOISE RATIOS; SILICON DIOXIDE
[出版年份]:1991
[专业领域]:INSTRUMENTATION AND PHOTOGRAPHY
[唯一标识符]:CDSITC.AEROSPACE.A87-31195
[文献来源]:美国航空航天数据库(aerospace);国际航宇文摘(IAA)
[资源原始索取号]:A1987-31195; Reference AN: A87-31195
[标题]:Force coefficients for a NACA-0015 airfoil undergoing constant pitch rate motions
[作者]:STRICKLAND J H; GRAHAM G M
[来源]:(AIAA Aerospace Sciences Meeting 24th Reno NV Jan. 6 9 1986 AIAA Paper 86 0008) AIAA Journal. vol. 25, April 1987, p. 622 624. Previously cited in issue 07, p. 828, Accession no. A86 19631.
[关键词]:AERODYNAMIC DRAG; ANGLE OF ATTACK; FLOW VISUALIZATION; LIFT ; PITCH INCLINATION; AERODYNAMIC COEFFICIENTS; AERODYNAMIC STALLING; LEADING EDGES; PRESSURE DISTRIBUTION
[出版年份]:1987
[专业领域]:AERODYNAMICS
[馆藏索取号]:A87-31195



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