We propose a numerical method for the finite element simulation of micro-swimmers composed several rigid bodies moving relatively to each other. Three distinct formulations are proposed impose relative velocities between bodies. validate our model on three-sphere swimmer, which analytical results available.

The multi-billion-dollar market for micro-electro-mechanical systems (MEMS) devices containing micron-sized moving parts produced by photolithographic processes is overwhelmingly dominated by silicon. However, this material is not suitable for the fabrication of certain devices, and academic institutions and company research labs are using various compound semiconductor materials to produce MEM...

This study illustrates the value of embodied subtleties in process collaborative creativity. Drawing on a sensory ethnography two dance productions, we illustrate fine-grained ways which professional dancers negotiate creative processes behind scenes. We identify three aspects through creativity emerges from bodily subtleties: (1) moving beyond individual bodies towards collective ambitions, (2...

the kashan erg is one of the most important sand dune complexes in iran. being affected by wind erosion, theerg's borderlands face numerous problems as a result of sand movement. to evaluate the risk of sands moving intoresidential areas near the kashan erg, anemometry data from synoptic stations located in kashan, ardestan, meimeh,naeen, and qom were collected and analyzed to calculate the san...

In this study, a semi analytical method for transverse and axial vibration of single-walled boron nitride nanotube (SWBNNT) under moving a nanoparticle is presented. The surrounding elastic medium as Pasternak foundation and surface stress effect are included in the formulations of the proposed model. Using Timoshenko beam theory (TBT), Hamilton’s principle and nonlocal piezoelasticity theory, ...

In many computer vision applications, segmenting and extraction of moving objects in video sequences is an essential task. Background subtraction, by which each input image is subtracted from the reference image, has often been used for this purpose. In this paper, we offer a novel background-subtraction technique for real-time dynamic background generation using color images that are taken fro...

abstract:the general perception of islamic finance is that it prohibits the practice of paying and receiving interest, but islamicfinance is much broader than interest rate prohibition. islamic financial services can be viewed as a set of financialservices which are diversified based on the needs of society.since in the iranian economy most of the enterprises are micro and/or small, micro finan...

a micro-channel heat exchanger reactor with different micro-baffle shapes has been studied numerically. governing equations were solved base on the finite volume method with fluent software. in upper section, oxidation reaction of methanol was occurred and in lower section, steam reforming of methanol was done. two sections were separated with solid part which played as heat exchanger and trans...