نتایج جستجو برای: funnel chest

تعداد نتایج: 74686  

Journal: :Quality and Safety in Health Care 2002

Journal: :Physical review 2021

Using a particle-based model, we simulate the behavior of skyrmion under influence asymmetric funnel geometries and ac driving at zero temperature. We specifically investigate possibilities for controlling motion by harnessing ratchet effect. Our results show that as amplitude unidirectional drive is increased, can be set into along either easy or hard direction depending on direction. When par...

Journal: :Theology Cataloging Bulletin 2016

Journal: :Geographical Review of Japan 1942

Journal: :Mathematics of Control, Signals, and Systems 2021

Abstract Tracking of reference signals is addressed in the context a class nonlinear controlled systems modelled by r -th-order functional differential equations, encompassing inter alia with unknown “control direction” and dead-zone input effects. A control structure developed which ensures that, for every member underlying system admissible signal, tracking error evolves prescribed funnel cho...

ژورنال: آبخیزداری ایران 2019

The accumulation of sediments in reservoirs of dams has always been one of the problems of reservoir dams. Accordingly, one of the approaches to address this problem can be referred to as the method of pressure flushing. In this method, during the course of flushing, generally the bottom drainage outlets of the dam are opened for a certain period of time and the reservoir water level is kept al...

Journal: :Journal of bacteriology 2007
Peter Galajda Juan Keymer Paul Chaikin Robert Austin

Randomly moving but self-propelled agents, such as Escherichia coli bacteria, are expected to fill a volume homogeneously. However, we show that when a population of bacteria is exposed to a microfabricated wall of funnel-shaped openings, the random motion of bacteria through the openings is rectified by tracking (trapping) of the swimming bacteria along the funnel wall. This leads to a buildup...

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