30 research outputs found

    Tampa Bay Mass Transit: Planning for Tomorrow

    Get PDF
    Tampa Bay Region, Florida Tampa Bay mass transit: planning for tomorrow. Summary report. Prepared for the Tampa Bay Regional Planning Council. Washington, D.C. : TRW Systems Group, 1970

    Mission science requirements AS-511 /CSM-112/ LM-10 Apollo Mission J-1 (Apollo 16)

    Get PDF
    This document contains the science requirements for the Apollo J-1 Mission. It is intended for use by the Manned Spacecraft Center (MSC) and offsite personnel in program and mission planning and in the integration and implementation of mission science requirements.Contract NAS 9-8166prepared by TRW Systems for Lunar Missions Office Science and Applications Directorate Manned Spacecraft Center ; [submitted by Richard R. Baldwin].General science requirements -- Experiments requirementsReview draf

    AS-512/CSM-114/ LM-12 Apollo Mission J-3 (Apollo 17) mission science planning document

    Get PDF
    The Mission Science Planning Document (MSPD) is intended primarily as a science overview for use by experiment Principal Investigators, members of the scientific community, and personnel involved in planning science activities for the Apollo Mission J-3. It is also intended to provide detailed interim data for use in implementing the science requirements presented in the MSC-controlled J-3 Mission Requirements Document (MRD) until such data are published in other MSC-controlled documents.Contract NAS 9-12330prepared by TRW Systems for Science Missions Support Division, Science and Applications Directorate, Manned Spacecraft Center ; submitted by Richard R. Baldwin.General mission science planning -- Experiment descriptions -- Photographic plan -- Lunar surface science plan -- Science recovery plan -- Lunar receiving laboratory planPreliminar

    Tampa Bay Region Mass Transportation: Phase II Appendixes

    Get PDF
    Tampa Bay Region, Florida Tampa Bay region mass transportation: Phase II. Prepared for the Tampa Bay Regional Planning Council, by Harvey N. Kreisberg. McLean, Va : TRW Systems Group, 1971. With appendixes document

    Statistical characterisation of bio-aerosol background in an urban environment

    Full text link
    In this paper we statistically characterise the bio-aerosol background in an urban environment. To do this we measure concentration levels of naturally occurring microbiological material in the atmosphere over a two month period. Naturally occurring bioaerosols can be considered as noise, as they mask the presence of signals coming from biological material of interest (such as an intentionally released biological agent). Analysis of this 'biobackground' was undertaken in the 1-10 um size range and a 3-9% contribution was found to be biological in origin - values which are in good agreement with other studies reported in the literature. A model based on the physics of turbulent mixing and dispersion was developed and validated against this analysis. The Gamma distribution (the basis of our model) is shown to comply with the scaling laws of the concentration moments of our data, which enables us to universally characterise both biological and non-biological material in the atmosphere. An application of this model is proposed to build a framework for the development of novel algorithms for bio-aerosol detection and rapid characterisation.Comment: 14 Pages, 8 Figure

    The Pioneer Anomaly

    Get PDF
    Radio-metric Doppler tracking data received from the Pioneer 10 and 11 spacecraft from heliocentric distances of 20-70 AU has consistently indicated the presence of a small, anomalous, blue-shifted frequency drift uniformly changing with a rate of ~6 x 10^{-9} Hz/s. Ultimately, the drift was interpreted as a constant sunward deceleration of each particular spacecraft at the level of a_P = (8.74 +/- 1.33) x 10^{-10} m/s^2. This apparent violation of the Newton's gravitational inverse-square law has become known as the Pioneer anomaly; the nature of this anomaly remains unexplained. In this review, we summarize the current knowledge of the physical properties of the anomaly and the conditions that led to its detection and characterization. We review various mechanisms proposed to explain the anomaly and discuss the current state of efforts to determine its nature. A comprehensive new investigation of the anomalous behavior of the two Pioneers has begun recently. The new efforts rely on the much-extended set of radio-metric Doppler data for both spacecraft in conjunction with the newly available complete record of their telemetry files and a large archive of original project documentation. As the new study is yet to report its findings, this review provides the necessary background for the new results to appear in the near future. In particular, we provide a significant amount of information on the design, operations and behavior of the two Pioneers during their entire missions, including descriptions of various data formats and techniques used for their navigation and radio-science data analysis. As most of this information was recovered relatively recently, it was not used in the previous studies of the Pioneer anomaly, but it is critical for the new investigation.Comment: 165 pages, 40 figures, 16 tables; accepted for publication in Living Reviews in Relativit

    Development of a polymeric cementing and encapsulating process for managing hazardous wastes /

    No full text
    Mode of access: Internet

    Gaining Confidence in Using Return on Investment and Earned Value

    No full text
    The terms “earned value ” and “return on investment ” (ROI) are frequently heard in the world of project management; however, they are often used incorrectly or inconsistently. This article summarizes the major principles and purposes of these management tools with the intent on moving them into the mainstream of proper use. Throughout the Department of Defense (DoD) and private industry, the terms “return on investment ” and “earned value ” are becoming more commonplace. Their use also is becoming more appropriate, visibly demonstrated, and validated. These terms tend to frustrate some program managers and corporate executives, while other organizations revel in their daily application. It is interestin
    corecore