Migratory birds have been implicated in the spread of some zoonotic diseases, but how well infected individuals can fly remains poorly understood. We used western sandpipers, Calidris mauri, to experimentally test whether flight is affected when long-distance migrants are mounting an immune response and whether migrants maintain immune defences during a flight in a wind tunnel. We measured five...

The purpose of this study was to examine spatiotemporal parameters of the walk-to-run transition (WRT) and run-to-walk transition (RWT) when speed is altered with different constant accelerations. Twenty women (height: 168.9+/-3.36cm) performed three accelerations (0.05, 0.07 and 0.1ms(-2)) and three decelerations (-0.05, -0.07 and -0.1ms(-2)) on a motor-driven treadmill. The transition step in...

Dissertation has been made for research project of mathematical modeling of aerospace system “Space-to-Surface” for avoid intercepting process by flight objects “Surface-to-Air”. The dissertation includes Introduction, the 3 Chapters, and Conclusion. The research has been completed and created mathematical models which used for research and statistical analysis. In mathematical modeling has bee...

Energy saving strategies such as formation flight and near-ground flight are frequently exploited in nature. The energy reduction mechanisms of these approaches are conceptually simple; however, the unsteady wake vortex structures that result from flapping may provide additional benefits. Since these flight strategies offer increased energy savings over simple flight situations, they have recei...

The paper implements an automated test system for evaluating flight simulator fidelity. Flight simulator fidelity is determined by direct comparison to flight test, the detailed design process and arithmetic are given. These problems about how to measure simulator fidelity and about how much fidelity is required to guarantee a certain level of transfer of training is solved. The automated test ...

To assess the extent to which the power output of a synchronous insect flight muscle is maximized during flight, we compared the maximum potential power output of the mesothoracic dorsolongitudinal (dl1) muscles of Manduca sexta to their power output in vivo. Holding temperature and cycle frequency constant at 36 degrees C and 25 Hz, respectively, we varied the phase of activation, mean length ...

introduction: herpes labialis is important in dentistry because of its high prevalence. herpes simplex virus (hsv) is responsive to treatment and infection control methods help protect patients and dental personnel. due to high levels of stress in the flight crew this study evaluated the prevalence of recurrent herpes labialis in the personnel of an airline company. materials and methods: in th...

in this paper a new guidance technique for ballistic missiles and launch vehicles is proposed. generally the lambert guidance is used to generate missile nominal (correlated) parameters through powered flight to put it in a ballistic flight path. because of uncertainties and undesired factors, the nominal position and velocity obtained by lambert technique need to be followed in actual flight. ...

INTRODUCTION The psychological workload of flying has been shown to increase heart rate (HR) during flight simulator operation. The association between HR changes and flight performance remains unclear. METHODS There were 15 pilots who performed a combat flight mission in a Weapons Tactics Trainer simulator of an F-18 Hornet. An electrocardiogram (ECG) was recorded, and individual incremental...