The semi-active flapping foil driven by the swing arm is a simple structure to realize propulsion of foil. motion trajectory this mechanism circular arc, and its hydrodynamic characteristics are not clear. This paper systematically investigates working performance with arc track. Compared traditional structure, special design parameters mainly include length stiffness torsion spring. In paper, ...

•A review on the use of magnetic fields lithium-ion batteries is presented•The application influences electrochemical reactions•This influence ranges from mass transport dynamics to charge-discharge behavior•The allows it improve performance Lithium-ion (LIBs) are currently fastest growing segment global battery market, and preferred energy storage system for portable applications. Magnetism on...

A good charge transfer efficiency is very important for high-speed application CMOS image sensors. This paper presents a method to optimize the pinned-photodiode (PPD) shape, which is implemented in the 4T CMOS pixel for reducing the image lag of large area photodiode pixels. The new design allows combining a better light sensitivity with a good charge transfer. A CMOS image sensor test chip is...

Air quality model (AQM) is an essential tool for management of air quality in near field region of an industrial complex. Model validation study using site specific input data can boost the consistency on accuracy of model’s performance for air quality management. This study describes the validation of CALPUFF and AERMOD for assessment of NOx concentrations in near field region of a steel indus...

Context. M 87 is the first extragalactic source detected in the TeV range that is not a blazar. With the increasing performances of ground-basedČerenkov telescopes, we can now probe the variability in the γ-ray flux at small timescales, thus putting strong constraints on the size of the emitting zone. The large scale jet of M 87 is misaligned with respect to the line of sight. A modification of...

This paper addresses the issue of face representations for facial expression recognition and synthesis. In this context, a global active appearance model is used in conjunction with two bilinear factorization models to separate expression and identity factors from the global appearance parameters. Although active appearance models and bilinear modelling are not new concepts, the main contributi...

the sirri jacket offshore platform was designed and installed in persian gulf of iran in 1975 and has been in service since that time. the importance of offshore structure's stability and the failure of this kind of structure during an earthquake in different active zones revealed that earthquake loading has to be considered. in this paper, magnetorheological (mr) fluid dampers have been propos...

Methods of deformable appearance models are useful for realistically modelling shapes and textures of visual objects for reconstruction. A first application can be the fine analysis of face gestures and expressions from videos, as deformable appearance models make it possible to automatically and robustly locate several points of interest in face images. That opens development prospects of tech...

Recently, several gateway-based congestion control mechanisms have been proposed to support the endto-end congestion control mechanism of TCP (Transmission Control Protocol). In this paper, we focus on RED (Random Early Detection), which is a promising gateway-based congestion control mechanism. RED randomly drops an arriving packet with a probability proportional to its average queue length (i...

Improvements in performance modeling and identification of computational regimes within software libraries is a critical first step in developing software libraries that are truly agile with respect to the application as well as to the hardware. It is shown here that Pareto ranking, a concept from multi-objective optimization, can be an effective tool for mining large performance datasets. The ...