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104. Die Yttrium-90-Therapie von Knochenmetastasen

Author

Kutzner J, Roesler A, Brod Kh, and Grimm W

Subjects
medicine.medical_specialty, business.industry, Yttrium 90 therapy, Medicine, General Medicine, Radiology, business
Published
2008

106. Biodiversity and the heterogeneous disturbance regime on military training lands

Author

Warren, S.D., Holbrook, S., Dale, D., Whelan, N., Elyn, M., Grimm, W., Jentsch, Anke Veronika, Warren, S.D., Holbrook, S., Dale, D., Whelan, N., Elyn, M., Grimm, W., and Jentsch, Anke Veronika

Abstract

Disproportionately large numbers of threatened and endangered species and unusually high biodiversity occur on active and former military training areas. Although this may seem paradoxical given the apparently destructive nature of military training, an evaluation of the nature and extent of the disturbances is enlightening. Military training frequently produces heterogeneous landscapes. Large portions of military training areas remain virtually untouched, favoring disturbance-averse species; other portions are heavily disturbed, favoring disturbance-dependent species. The rich habitat mosaics include the two extremes as well as the continua of disturbance and succession between them, thus providing suitable habitat for a very large number of species with widely varying habitat requirements. To explain the phenomenon, a heterogeneous disturbance hypothesis is proposed which suggests that biodiversity is maximized where multiple kinds, frequencies, severities, periodicities, sizes, shapes, and/or durations of disturbance occur concomitantly on a landscape in a spatially and temporally distributed fashion. The enhanced biodiversity occurring on active and former military training areas illustrates the need for restoration ecologists to restore or maintain an appropriate heterogeneous disturbance regime when attempting to restore ecosystem function and biodiversity.

Published
2007

109. Grimm masalları

Author

Grimm, J., Işık, Deniz, Grimm, W., Hiperlink (Firm), Grimm, J., Işık, Deniz, Grimm, W., and Hiperlink (Firm)

Subjects
Masallar, Tales
Published
2007

131. Integrated Guidance and Control for Entry Vehicles.

Author

Breitner, Michael H., Denk, Georg, Rentrop, Peter, Grimm, W., and Rotärmel, W.

Abstract

The article presents an integrated approach for the design and control of entry trajectories. The output of the analytical design process is a drag profile together with the nominal sink rate and bank control. All quantities are functions of specific energy. The trajectory design is strongly related to a path control law, which consists of a linear feedback of the drag and sink rate errors. The control design is based on the solution of a globally valid linear model. In simulations, the guidance and control algorithm produces smooth and precise flight paths. [ABSTRACT FROM AUTHOR]

Published
2008
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140. Optimal Guidance Anticipating Missile Performance

Author

DEUTSCHE FORSCHUNGS- UND VERSUCHSANSTALT FUER LUFT- UND RAUMFAHRT E V WESSLING (GERMANY F R), Grimm, W., Well, K. H., DEUTSCHE FORSCHUNGS- UND VERSUCHSANSTALT FUER LUFT- UND RAUMFAHRT E V WESSLING (GERMANY F R), Grimm, W., and Well, K. H.

Abstract

Two different guidance methods are designed for the pre-launch phase in a one-versus-one air combat situation with missiles. In both guidance schemes a missile/target simulation is performed to estimate the miss distance at the end of a fictitious missile launch. A way to do this in real time is described. The first guidance method continuously evaluates the miss distance for each aircraft against the respective opponent. The guidance is such that the ratio of the rates of the miss distances takes an optimal value from the view of the guided aircraft. Thus, it reaches a firing opportunity first., This article is from 'Air Vehicle Mission Control and Management, The Guidance and Control Panel Symposium (53rd) Held in Amsterdam, The Netherlands on 22-25 October 1991 (La Gestion et le Controle des Missions des Vehicules Aeriens).' AD-A253 088, p23-1 thru p23-13.

Published
1992

141. Field Study Evaluation of an Experimental Physical Fitness Program for USAF Firefighters

Author

SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TX, Myhre, L. G., Grimm, W., Van Kirk, G. R., Tattersfield, R., Sherrill, E. T., SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TX, Myhre, L. G., Grimm, W., Van Kirk, G. R., Tattersfield, R., and Sherrill, E. T.

Abstract

Under emergency conditions, firefighting demands extraordinary levels of physical effort in performing tasks under some of the most life threatening conditions. Success in performing these tasks depends on the firefighters physical fitness, particularly his/her cardiovascular endurance. Studies have shown that firefighters, both in the civilian and military sectors, are generally less fit than their age related sedentary American counterparts. this report describes a field study to evaluate the safety and effectiveness of an experimental physical conditioning program that could be prescribed on an individual basis. Special emphasis was placed on a conservative program for older, less fit firefighters who would be most susceptible to exercise-related injury.

Published
1991

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