نتایج جستجو برای: equilateral triangular

تعداد نتایج: 20610  

ژورنال: :مکانیک سازه ها و شاره ها 2012
محمد کلته عباس عباسی مجید بهرامی

in this paper, a novel approximate solution to determine the nusselt number for thermally developed, slug (low-prandtl), laminar, single phase flow in channels of arbitrary cross section is presented. using the saint-venant principle in torsion of beams, it is shown that the thermally developed nusselt number for low-prandtl flow is only a function of the geometrical parameters of the channel c...

Journal: :Journal of Combinatorial Theory, Series A 2021

In this paper we consider arbitrary hexagons on the triangular lattice with three bowtie-shaped holes, whose centers form an equilateral triangle. The number of lozenge tilings such general regions is not expected — and indeed given by a simple product formula. However, when considering certain natural normalized counterpart R any region R, prove that ratio between simple, conceptual Several se...

Journal: :El-cezeri 2021

Development effort on Autonomous mobile robots that can operate in unknown environments are ongoing order to extend the application area of robots. In navigate, an autonomous robot needs a map environment and location information relative map. Simultaneous Localization Mapping (SLAM) is prediction process which use this determine its position while building consistent The purpose study examine ...

2001
W. S. Park H. S. Cho Y. K. Byun N. Y. Park D. K. Jung

In this paper, a new measuring system is proposed which can measure the 3-dimensional position and orientation of rigid bodies. Its measurement principle is based on detection of laser beam reflected from a specially fabricated mirror that looks like a triangular pyramid having an equilateral cross-sectional shape. The mirror has three lateral reflective surfaces inclined 45° to its bottom surf...

2015
Amit A. Deshmukh Shafin B. Nagarbowdi N. V. Phatak A. A. Desai S. A. Shaikh K. A. Lele

The compact variation of equilateral triangular microstrip antenna, a shorted 600 Sectoral microstrip antenna is discussed. The proximity fed shorted 600 Sectoral microstrip antenna is proposed which gives simulated and measured BW of more than 700 MHz (>60%). To increase the bandwidth and gain, gap-coupled configuration two Shorted 600 Sectoral patches is proposed. It yields simulated and meas...

Journal: :Journal of Computational Electronics 2021

The effects of surface plasmon polaritons (SPPs) on the efficiency, series resistance, and shunt resistance thin-film Si solar cells are studied analyzed in this work. Different SPP shapes their optical electrical properties thereby efficiency studied. Semiconductor electromagnetic models incorporated to study behaviors cells, respectively, using COMSOL Multiphysics three-dimensional (3D) numer...

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