نتایج جستجو برای: smart material

تعداد نتایج: 436513  

2006
Zhishen Wu Koichi Yokoyama

Rapid developments of structural sensing and control, data acquisition and processing, and computer technologies have made it feasible to monitor the structural health of large-scale structures in real time. SHM of large-scale infrastructures has increasingly attracted extensive interests from both fields of research and application. Based on recent research achievements of developing smart SHM...

2011
Young - Jun You Ki - Tae Park Kyu - Wan Lee

Since prestressed concrete members rely on the tensile strength of the prestressing strands to resist loads, loss of even few them could result catastrophic. Therefore, it is important to measure present residual prestress force. Although there are some techniques for obtaining present prestress force, some problems still remain. One method is to install load cell in front of anchor head but th...

2003
KONSTANTIN A. LURIE

Abstract-Non-stationary phenomena arising in structures can be effectively controlled via smart (intelligent) materials. The corresponding mathematical problems contain controls in the coefficients of hyperbolic equations, these controls depending both on position and time. When appropriately activated, such controls may provide 100% screening of some extended parts of the structure from the in...

2003
Amr A Abdelrahman

Population growth followed by the dramatic increase and demand for new services created an urgent and overwhelming need for infrastructures of civil engineering structures. However, the current infrastructure work using various techniques and conventional materials for construction will not solve the traditional and continuous deterioration of concrete structures due to corrosion of steel. One ...

2012
Shunli Xiao Yangmin Li

Smart material actuators like Piezoelectric(PZT) are widely used in Micro/Nano manipulators, but their hysteresis behaviors are complex and difficult to model. Most hysteresis models are based on elementary quasistatic operators and are not suitable for modeling ratedependent or thermal-drift behaviors of the actuators. This work proposes a Preisach model based neurodynamic optimization model t...

2005
XIAOBO TAN JOHN S. BARAS P. S. KRISHNAPRASAD

A class of dynamical systems with hysteresis is considered, where the hysteresis nonlinearity is coupled to an ordinary differential equation (ODE) in an unusual manner. Such systems arise in various contexts, e.g., smart material modeling, open-loop control of smart material actuators, and feedback control of systems involving hysteretic components. In this paper the Preisach operator is used ...

2009
R. F. Nicholls-Lee

An adaptive textile composite, sometimes referred to as a smart material or intelligent material, is a structure tailored to exhibit desirable elastic deformation behaviour not necessarily proportional to the imposed load. An example of such a structure would be a box beam so tailored that an imposed cantilever load results in twisting as well as bending, although no torsional load was imposed,...

2018
Nan Zhang Xuejiao Zhao Xiaopei He

With the development of Internet of things (IoT), there are many smart city projects for improving urban services recent years. Community is a basic subunit of a city, smart community involves those important affairs which most directly related to unban services in a smart city overall planning. Based on the dualism of information architecture and business model by Kuk and Janssen (2011), the s...

2015
Jianchao Zhang

Building information modelling (BIM) provides architectural 3D visualization and a standardized way to share and exchange building information. Recently, there has been an increasing interest in using BIM, not only for design and construction, but also the post-construction management of the built facility. With the emergence of smart built environment (SBE) technology, which embeds most spaces...

Journal: :Behaviour research and therapy 2013
Raphael D Rose Jay C Buckey Tomislav D Zbozinek Sarosh J Motivala Daniel E Glenn James A Cartreine Michelle G Craske

BACKGROUND Stress is a common and costly behavioral health issue. Technology-based behavioral health programs (e.g., computer or web-based programs) are effective for treating anxiety or depression. These programs increase availability of evidence-based interventions to individuals who are not able or willing to receive such in-person treatments. Stress management training has empirical support...

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