نتایج جستجو برای: maneuvering movement
تعداد نتایج: 158928 فیلتر نتایج به سال:
The classical theory of locomotion in sharks proposes that shark pectoral fins are oriented to generate lift forces that balance the moment produced by the oscillating heterocercal tail. Accordingly, previous studies of shark locomotion have used fixed-wing aircraft as a model assuming that sharks have similar stability and control mechanisms. However, unlike airplanes, sharks are propelled by ...
Growing soft materials which follow a three dimensional (3D) path in space are critical to applications such as search and rescue minimally invasive surgery. Herein, concept for single-input growing multi-stable material, based on constrained straw-like structure is presented. This class of capable maneuvering transforming their configuration by elongation while executing multiple turns. achiev...
Maneuvering characteristics of surface combatants in the United States Navy are often ignored during the design process. Key maneuvering parameters such as tactical diameter and turning rate are determined during sea trials after the ship enters service. In the "Navy After Next", the study of maneuvering of surface combatants will become increasingly more important in efforts to reduce the numb...
Studying the performance of multisensor tracking systems against maneuvering targets involves Monte Carlo simulations with the tracking algorithms implemented in a sophisticated computer simulation of the multisensor system [2], [1]. However, a simplified method for predicting the performance of a multisensor tracking system against maneuvering targets is needed to confirm the results of comput...
Bearings-only tracking (BOT) is the determination of the trajectory of a target solely from bearing measurements. The BOT area has been widely investigated [1—4] and numerous solutions for this problem have been proposed [5]. However the measurement equation relating the target bearing to its state is highly nonlinear. Classical least square methods as the Kalman filter cannot be directly appli...
It is demonstrated that the shapes and magnitudes of DNA writhe can be precisely manipulated solely through maneuvering the nucleotide sequence of DNA and without the assistance of topoisomerases.
during a survey of sindh and punjab provinces of pakistan, two dragonfly genera were collected and identified for the first time from the country. anaciaeshna(family aeshnidae) is a genus of large dragonflies. representatives were collectedfrom gujjo, district thatta (sindh) in august 2008 and were identified as anaciaeshna jaspidea (burmeister). the second genus was epophthalmia (family cordul...
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