نتایج جستجو برای: midcourse

تعداد نتایج: 129  

1995
A. T. Stair

he underlying requirements for demonstrating space-based surveillance, acquisition, tracking, and discrimination of ballistic reentry vehicles and penetration aids were followed in the design of the Midcourse Space Experiment (MSX) satellite and sensors. The primary sensor is the totally cryogenic Spatial Infrared Imaging Telescope III (SPIRIT III), supported by multiple co-aligned visible and ...

2004
J. S. Clark J. M. Porter

We utilise Midcourse Space Experiment mid-IR imaging and published data to discuss the (massive) star formation region at galactic longitude ∼305◦, apparently associated with the Wolf Rayet WR 48a and the attendant clusters Danks 1 and 2. A spectacular three lobed wind blown bubble surrounds the aforementioned sources, for which we may infer a minimum age of ∼3 Myr from the presence of the WCL ...

2009
Alexander G. Tartakovsky Andrew P. Brown James Brown

We develop and evaluate a suite of advanced algorithms which provide significantly-improved capabilities for finding, fixing, and tracking multiple ballistic and flying low observable objects in highly stressing cluttered environments. The algorithms have been developed for use in satellite-based staring and scanning optical surveillance suites for applications including theatre and intercontin...

Journal: :Journal of nuclear medicine technology 2003
Wei-Jen Shih Kelly Gross

Bone scintigraphy performed on a patient during the middle of radiation therapy for an inoperable left lung malignancy showed diffusely increased uptake in the thoracic vertebrae and relatively increased uptake in the ribs of the left thorax. This bone scan finding is apparently a transient phenomenon that occurs in response to irradiation and eventually leads to photon deficiency or photopenia...

2002
Paul A. Crowther Peter S. Conti

We present mid-IR 21μm images of a sample of radio selected Ultracompact H ii (UCH ii) regions, obtained with the Midcourse Space Experiment (MSX). All, with one possible exception, are detected at mid-IR wavelengths, sampling the warm dust emission of the cocoons of the OB star central exciting sources. Many of the UCH ii regions have nearby (up to ≈ few pc distant) companion dust emission sou...

2010
Fu-Kuang Yeh

This investigation addresses a nonlinear terminal guidance/autopilot controller with pulse-type control inputs for intercepting a theater ballistic missile in the exoatmospheric region. Appropriate initial conditions on the terminal phase are assumed to apply after the end of the midcourse operation. Accordingly, the terminal controller seeks to minimize the distance between the commanded missi...

Journal: :The Gerontologist 2012
Renée R Shield Timothy W Farrell Aman Nanda Susan E Campbell Terrie Wetle

PURPOSE OF THE STUDY The Alpert Medical School of Brown University began to integrate geriatrics content into all preclerkship courses and key clerkship cases as part of a major medical school curriculum redesign in 2006. This study evaluates students' responses to geriatrics integration within the curriculum using journals kept by volunteer preclerkship and clerkship students between 2007 and ...

Journal: :The Future of children 2000
S Mallonee

Evaluation of injury prevention programs is critical for measuring program effects on reducing injury-related morbidity and mortality or on increasing the adoption of safety practices. During the planning and implementation of injury prevention programs, evaluation data also can be used to test program strategies and to measure the program's penetration among the target population. The availabi...

Journal: :Plant physiology 1974
M G Cline M M Rehm

The effects of cordycepin (3'-deoxyadenosine), an RNA synthesis inhibitor, on auxin-induced elongation in Avena coleoptile segments were studied with a position-sensing transducer. Cordycepin rapidly inhibited auxin-stimulated growth in the coleoptile segments whether added before, at the same time as, or after, the 2 mum auxin treatment. Midcourse additions of 100, 50, and 25 mug/ml cordycepin...

2010
Alexander G. Tartakovsky Andrew P. Brown James Brown

We develop and evaluate the performance of advanced algorithms which provide significantly improved capabilities for automated detection and tracking of ballistic and flying dim objects in the presence of highly structured intense clutter. Applications include ballistic missile early warning, midcourse tracking, trajectory prediction, and resident space object detection and tracking. The set of...

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