نتایج جستجو برای: the traditional ropes bear rough surfaces
تعداد نتایج: 16101555 فیلتر نتایج به سال:
Im this paper, the performance of suppliers is evaluated based on their efficiencies. Evaluation environment is not always precise and we may face imprecise for evaluation indexes values. In this situation, traditional and certain models cannot be employed. For overcoming uncertainty problem, there are different models such as stochastic, statistical, Rough, Fuzzy, etc for solving uncertainty e...
This paper discusses several approaches to scattering from slightly rough» very rough, composite, and rough spherical surfaces. Average incoherent scattering cross sections for slightly rough surfaces are obtained using a perturbation technique for a perfect conductor, and for a surface material which is homogeneous (with variable permeability, \Lr, as well as permittivity, «r)« The results, co...
after the soviet union dissolution, a chaotic period was begun in the russia. russia lost its glory and felt disgrace. the first group of elites came to power under yeltsin; they tried to re-define russia’s identity as a european country and build a foreign policy on this baseline. therefore russia tried to become closer with the west especially with the u.s. according to their view the sovie...
The effects of rough surface scattering on the detection and imaging of objects are important in many applications including the imaging of objects on or near ocean surfaces and the detection of objects buried under ground rough surfaces. This paper focuses on the following problems: (1) Scattering from wedge-like rough surfaces representing ocean surfaces with sharp crested waves. (2) Scatteri...
this study investigated the effects of three kinds of gloss conditions, that is traditional non-call marginal gloss, audio gloss, and extended audio gloss, on reading comprehension and vocabulary gain of iranian upper- intermediate efl learners. to this end, three experimental and one control groups, each comprising 15 participants, took part in the current study. in order to ensure that the pa...
Abstract The contact calculation of three-dimensional real rough surfaces is the frontier field tribology and surface science. In this study, we consider interaction elastic-plastic deformation characteristics asperities further, propose an analytical method for considering asperities. Based on watershed algorithm, segmented are reconstructed into ellipsoids. According to height relationship be...
The main purpose of this paper is to develop the method of characteristic functions for calculating the detection characteristics in the case of the object surrounded by rough surfaces. This method is to be implemented in synthetic aperture radar (SAR) systems using optimal resolution algorithms. By applying the specified technique, the expressions have been obtained for the false alarm and cor...
To reduce storage space and transportation cost for alfalfa and straw bales, recompressing of the bales is recommended. In order to design different units and elements of double compressing device, some physical and rheological properties of desired products were determined. A factorial experiment with a randomized complete block design with three replications was used during the tests. Confine...
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