نتایج جستجو برای: geometrical optimization

تعداد نتایج: 345188  

2004
Shogo Tanimura Daisuke Hayashi Mikio Nakahara

Holonomic quantum computation is analyzed from geometrical viewpoint. We develop an optimization scheme in which an arbitrary unitary gate is implemented with a small circle in a complex projective space. Exact solutions for the Hadamard, CNOT and 2-qubit discrete Fourier transformation gates are explicitly constructed.

2010
Takayuki Yamada Kazuhiro Izui Shinji Nishiwaki Akihiro Takezawa

This paper proposes a new topology optimization method, which can adjust the geometrical complexity of optimal configurations, using the level set method and incorporating a fictitious interface energy derived from the phase field method. First, a topology optimization problem is formulated based on the level set method, and the method of regularizing the optimization problem by introducing fic...

2001
Dirk Büche Rolf Dornberger

1 Abstract Multi-objective optimization addresses problems with several design objectives, which are often conflicting, placing different demands on the design variables. In contradiction to traditional optimization methods, which combine all objectives into a single figure of merit, parallel optimization strategies such as evolutionary algorithms allow direct convergence to the Pareto front. T...

Journal: :Polythematic Online Scientific Journal of Kuban State Agrarian University 2018

Journal: :Physica medica : PM : an international journal devoted to the applications of physics to medicine and biology : official journal of the Italian Association of Biomedical Physics 2013
Marta Adamczyk Grzegorz Zwierzchowski Julian Malicki Janusz Skowronek

BACKGROUND AND PURPOSE High dose rate (HDR) brachytherapy is a clinically used procedure in prostate cancer treatment. The purpose of this study was to present the influence of using different optimization algorithms in 3D-CBRT planning on the treatment plan quality. MATERIALS AND METHODS Treatment plans were calculated for 15 patients--three plans for each patient using: geometrical optimiza...

Journal: :E3S web of conferences 2023

A wind turbine is a device that converts mechanical energy into electrical by its rotary action. In this paper, turbine’s lift and power characteristics are improved employing vortex generator as passive flow control on the surface of turbine. triangular used for study simplicity in design effective results. NACA 4418 airfoil selected conceptual BEM (Blade Element Momentum theory), geometrical ...

Journal: :پژوهش های حبوبات ایران 0
رضوی رضوی زایرزاده زایرزاده خفاجی خفاجی پهلوانی پهلوانی

some physical properties such as geometrical, gravimetrical, frictional and aerodynamic features of seeds of desi chickpea and its splits were studied at a moisture content of 8.2 and 9.0% w., respectively from north-western of iran. geometrical and gravimetrical properties including the average length, width, thickness, the geometric mean of diameter, sphericity, 1000-seed weight, unit weight,...

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