نتایج جستجو برای: increasing the speed
تعداد نتایج: 16090074 فیلتر نتایج به سال:
The subject of this research is the image classification methods based on a set key points descriptors. goal to increase performance methods, in particular, improve time characteristics by introducing hashing tools for reference data representation. Methods used: ORB detector and descriptors, tools, search arrays, metrics-based apparatus determining relevance vectors, software modeling. obtaine...
Experimental Investigation of the Surface Roughness in Grinding of BK7 Optical Glass in Brittle Mode
Surface roughness is a significant parameter which determines the efficiency of optical components. Surface damages induced by grinding strongly influence the mechanical strength and optical quality of optical glasses. It is meaningful to rapid evaluate the surface roughness through the measurement of different grinding parameters. In this study, a cup diamond wheel (D64) is used in grinding pr...
Polyacrylonitrile nanofibrous tubular structures were produced through typical and opposite charge electrospinning methods and the effect of the method as well as the two key electrospinning parameters, namely concentration of the electrospinning polymer solution and rotational speed of mandrel collector on properties of such tubular structures were studied. The smples were characterized by...
Friction stir welding (FSW) is an economic and high quality technique at aluminum welding and joining methods. The most important factor in the soundness of this type of welding, is the mechanism of material transfer in each tool rotation. The materials transfer during the welding process involves horizontal and vertical movement that caused by extrusion process and forging force (the tilt angl...
In the Mallat algorithm, calculations are performed in time domain. To speed up signal conversion at each level, wavelet coefficients sequentially halved. This paper presents an algorithm for increasing of multiscale analysis using fast Fourier transform. this frequency domain, which is why authors call For level decomposition, determined from and can be calculated parallel, reduces time. addit...
Experimental Investigation of the Surface Roughness in Grinding of BK7 Optical Glass in Brittle Mode
Surface roughness is a significant parameter which determines the efficiency of optical components. Surface damages induced by grinding strongly influence the mechanical strength and optical quality of optical glasses. It is meaningful to rapid evaluate the surface roughness through the measurement of different grinding parameters. In this study, a cup diamond wheel (D64) is used in grinding pr...
Friction stir welding (FSW) is an economic and high quality technique at aluminum welding and joining methods. The most important factor in the soundness of this type of welding, is the mechanism of material transfer in each tool rotation. The materials transfer during the welding process involves horizontal and vertical movement that caused by extrusion process and forging force (the tilt angl...
Salab gum is a hydrocolloidal compound which can be extracted from detached roots, tubers as well as rhizomes of Orchidaceae family. Apart from its applications in pharmaceuticals it has many potential usages in foodstuffs particularly ice cream and local soft drinks. However, there is little evidence about its rheological properties in the literature. Therefore, in the present study, the influ...
in this work we solve the set of hydrodynamical equations for accretion disks in the spherical coordinates (r,θ,ϕ) to obtain the explicit structure along θ direction. we study a two-dimensional advective accretion disc in the presence of thermal conduction. we find self-similar solutions for an axisymmetric, rotating, steady, viscous-resistive disk. we show that the global structure of an advec...
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