نتایج جستجو برای: composite curves

تعداد نتایج: 213766  

Journal: :international journal of environmental research 0
f. joda school of chemical engineering, university of tehran, p.o. box: 11365-4563, tehran, iran g.t. polley institute for scientific research, university of guanajuato, mexico n. tahouni school of chemical engineering, university of tehran, p.o. box: 11365-4563, tehran, iran m.h. panjeshahi school of chemical engineering, university of tehran, p.o. box: 11365-4563, tehran, iran

pinch technology is one of the best methods for designing a multi stream heat exchanger(mshe) through a network; current pinch-based methods, however, lead to a larger and more complicateddesign problems. the major drawback of the current methods is they result in designs having more individual mshe sections than essential, correspond to the enthalpy intervals on temperature vs. enthalpy diagra...

Journal: :international journal of environmental research 2013
f. joda g.t. polley n. tahouni m.h. panjeshahi

pinch technology is one of the best methods for designing a multi stream heat exchanger(mshe) through a network; current pinch-based methods, however, lead to a larger and more complicateddesign problems. the major drawback of the current methods is they result in designs having more individual mshe sections than essential, correspond to the enthalpy intervals on temperature vs. enthalpy diagra...

Journal: :Journal of Computational and Applied Mathematics 1999

ژورنال: :علوم و مهندسی زلزله 0
مرتضی بسطامی پژوهشگاه بین المللی زلزله شناسی و مهندسی زلزله امیر ملکشاهی دانشگاه کردستان

یکی از روش های ارزیابی لرزه ای پل ها استفاده از منحنی های شکنندگی تجربی است. از اطلاعات خسارت موجود برای برقراری رابطه بین حالت حدی خسارت و مؤلفه های حرکت زمین استفاده می شود. از آنجا که ویژگی های هیچ کدام از حرکت ورودی و مصالح سازه ای نمی توانند به طور قطع بیان شوند، مطالعات آسیب پذیری احتمالاتی با استفاده از روابطی که احتمال خسارت را به صورت تابعی از متغیرهای اتفاقی حرکت زمین و خصوصیات مصالح ...

2013
Aurore Guillevic

Since 2000 pairings became a very useful tool to design new protocols in cryptography. Short signaturesand identity-based encryption became also practical thanks to these pairings.This thesis contains two parts. One part is about optimized pairing implementation on different ellip-tic curves according to the targeted protocol. Pairings are implemented on supersingular elliptic curve...

Journal: :Applied Mathematics and Computation 2017

Journal: :Applied Mathematics and Computation 2017
Przemyslaw Gospodarczyk Stanislaw Lewanowicz Pawel Wozny

This paper deals with the problem of multi-degree reduction of a composite Bézier curve with the parametric continuity constraints at the endpoints of the segments. We present a novel method which is based on the idea of using constrained dual Bernstein polynomials to compute the control points of the reduced composite curve. In contrast to other methods, ours minimizes the L2-error for the who...

Journal: :Computer Aided Geometric Design 1998
Lars-Erik Andersson Thomas J. Peters Neil F. Stewart

This paper provides computationally tractable conditions to determine whether a composi te splme curve or patch selfintersects, according to a definition that includes the important limiting cases of cusps, singularities, and tangential intersections of adjacent components . These results follow upon our exposit ion of necessary and sufficient conditions to preclude such selfintersections. The ...

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