نتایج جستجو برای: accurate pull
تعداد نتایج: 248798 فیلتر نتایج به سال:
Culture of entrepreneurs is also a sort of capital, which has a direct effect on development of enterprises in the process of economic operation of enterprises. Construction of cultural capital among entrepreneurs helps to enhance the overall competitive strength of Chinese enterprises in international society and helps to push forward development of the economic society. Due to historical reas...
The aspect of reusing hypermedia course materials must be already regarded in the earlier modelling phases of the development, in order to enable such an implementation. In this work we present a concept for designing and implementing hypermedia courses with special consideration of reusing same course materials in several courses. The automatic generation of courses is supported through deriva...
the static pull-in instability of beam-type micro-electromechanical systems is theoretically investigated. two engineering cases including cantilever and double cantilever micro-beam are considered. considering the mid-plane stretching as the source of the nonlinearity in the beam behavior, a nonlinear size-dependent euler-bernoulli beam model is used based on a modified couple stress theory, c...
This paper explores the broad issues of why the meaningful use of ICT to engage in deep learning has not been widespread in K-12 schools. We argue a critical reason is the lack of sustainability in the implementation of ICT-enabled pedagogies in schools, arising from a failure to understand the conditions for systemic innovations. We describe the key issues related to sustainability from litera...
This paper explores the potentially powerful role e-assessment practices can have on culture change in learning and teaching. This paper demonstrates how new e-assessment practices can ‘push back’ through educational institutions. This is done by applying the work of Gibbs and Simpson (2004/5) to e-assessment practices. To illustrate the practical effects of this evidence-based framework, the a...
epoxy powder coatings containing zinc aluminum phosphate (zap) and zinc phosphate (zp), which are the 2nd and 1st generation of phosphate-based pigments respectively, were applied to the surface of mild steel sheets. the anticorrosive performances of the coated samples were studied using electrochemical impedance spectroscopy (eis). cathodic disbonding resistance and the adhesion performance of...
this paper studies pull-in behavior of a bio-mass sensor with a cantilevered cnt actuated electrostatically considering rippling deformation. although this phenomenon can change the behavior of cnt remarkably, its effect on the performance of a cnt-based mass sensor is not investigated yet. this investigation is based on modified euler-bernoulli beam theory and rippling effect is entered the eq...
Previous station pull through techniques of anal canal pressure measurement have not truly represented the differences among individuals and between sexes in the length and pressure profile of the anal canal. Furthermore, the techniques commonly used in anal canal pressure determination have not been adequately compared or standardised. Therefore, a mechanised rapid pull through technique using...
A novel single-stage push–pull electronic ballast with high input power factor is presented in this paper. The proposed electronic ballast combines the front-end power-factor corrector and push–pull converter into a single-stage converter. Compared to the single-stage class-D electronic ballast, the proposed circuit does not require an isolated driver. The control of the circuit is easier and t...
in the current study the effect of casimir force and squeezed film damping on the pull-in instability and dynamic behavior of electrostatically actuated nano and micro electromechanical systems is investigated separately. linear elastic membrane theory is used to model the static and dynamic behavior of system for strip, annular and disk geometries. squeezed film damping effect is modeled using...
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