Results 141 to 150 of about 3,471 (201)
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Experimental and simulation study on the effects of thermal and wind pressure on the aerodynamic performance of unpowered ventilation caps

The Physics of Fluids
As a critical component in building structures, unpowered ventilation caps effectively promote natural ventilation processes and reduce energy consumption. Thermal pressure and wind pressure are the main driving forces for its operation; however, related
Peng Wu   +5 more
semanticscholar   +1 more source

On the Unpower of Art

Museum International, 2010
Patrick Vauday emphasizes the differences that exist between current conditions and the situation of art throughout history. How should the adverb ‘still’ be interpreted in the question ‘What power does art still have?’ Does it suggest that the power of art is exhausted, or, on the contrary, does it suggest renewed hope?
openaire   +1 more source

Development of a novel unpowered rigid-flexible coupling waist exoskeleton through dynamic dimensional synthesis inspired by biomimetic cooperation

Robotica (Cambridge. Print)
In response to the auxiliary requirements for the treatment and prevention of lumbar diseases, based on the biomechanical characteristics of the human waist, a novel unpowered rigid-flexible coupling waist exoskeleton with multiple degrees of freedom and
Yuwei Yang   +4 more
semanticscholar   +1 more source

Analog fault diagnosis for unpowered circuit boards

Proceedings International Test Conference 1997, 2002
We present key portions of a method for automatic analog fault diagnosis for unpowered circuit boards. Our work consists of two major parts: (1) test point selection and (2) stimuli selection for diagnostic test generation. For test point selection, we propose an efficient graph-based algorithm achieving a desired level of diagnosibility.
Jiun-Lang Huang, Kwang-Ting Cheng
openaire   +1 more source

Influence of pulsating ambient wind on fire smoke in natural ventilation tunnel with unpowered ventilation cap

The Physics of Fluids
Unpowered ventilation cap, natural ventilation holds promise for effectively exhausting smoke during tunnel fires. However, the impact of pulsating ambient wind on tunnel fire smoke in unpowered ventilation cap natural ventilation systems remains unclear.
Weikang Liang   +6 more
semanticscholar   +1 more source

Improving the energy economy of human running with powered and unpowered ankle exoskeleton assistance

Science Robotics, 2020
Optimized assistance from powered ankle exoskeletons reduces energy cost during running, whereas spring-like assistance is ineffective. Exoskeletons that reduce energetic cost could make recreational running more enjoyable and improve running performance.
K. Witte   +3 more
semanticscholar   +1 more source

An RF Passive Distributed Photonic Sensor for Monitoring Unpowered Optical Network Components

IEEE Transactions on Instrumentation and Measurement
Optical power meters for signal strength estimation are widely used in unpowered optical network component (UONC) management, but they are costly and battery-dependent, lack fiber identification, and are limited by the operational environment.
Xiaoying Zheng   +8 more
semanticscholar   +1 more source

Development of an unpowered ankle exoskeleton for walking assist

Disability and Rehabilitation: Assistive Technology, 2018
Aim: Assistive technologies traditionally rely on either powered actuation or passive structures to provide increased strength, support or the ability to perform specific functions. At one end of the spectrum are powered exoskeletons, which significantly increase a user's strength, but require powerful actuators, complex control systems and heavy power
Justin, Leclair   +3 more
openaire   +2 more sources

Unpowered wireless ultrasound tomography system

SPIE Proceedings, 2016
In this paper, an unpowered wireless ultrasound tomography system is presented. The system consists of two subsystems; the wireless interrogation unit (WIU) and three wireless nodes installed on the structure. Each node is designed to work in generation and sensing modes, but operates at a specific microwave frequency.
Farshad Zahedi, Haiying Huang
openaire   +1 more source

Trajectory Optimization for Unpowered Gliding Submissile

2009 International Conference on Intelligent Human-Machine Systems and Cybernetics, 2009
Longer range and larger impact angle are the requirements of modern anti-armor missiles being studied. In order to achieve this goal, a method for trajectory optimization is introduced by transferring the design of trajectory optimization to solving nonlinear programming problems, and the gliding trajectory as well as the terminal guidance trajectory ...
Jiao Shi, Shengjing Tang, Chun-lei Yang
openaire   +1 more source

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