تسهیلات برنامه ریزی خطی برای حل مشکلات برنامه نویسی چند جمله ای This paper studies linear programming (LP) relaxations for solving polynomial programming problems. A polynomial programming problem can be equivalently formulated as a quadratically constrained quadratic program (QCQP) by introducing new variables that represent nonlinear monomials and substituting them …
ادامه مطلبمهندسی کامپیوتر و برق
Network user equilibrium of battery electric vehicles considering flow-dependent electricity consumption
شبکه تعادل کاربران باتری خودروهای برقی با توجه به مصرف برق وابسته به جریان This paper addresses the equilibrium traffic assignment problem involving battery electric vehicles (BEVs) with flow-dependent electricity consumption. Due to the limited driving range and the costly/time-consuming recharging process required by current BEVs, as well as the …
ادامه مطلبAn integer optimality condition for column generation on zero–one linear programs
یک شرایط بهینه مطلق برای تولید ستون در برنامه های خطی صفر Column generation is a linear programming method that, when combined with appropriate integer programming techniques, has been successfully used for solving huge integer programs. The method alternates between a restricted master problem and a column generation subproblem. The …
ادامه مطلبBiocompatible and electroconductive polyaniline-based biomaterials for electrical stimulation
مواد بیولوژیک بیولوژیک و الکترومغناطیسی مبتنی بر پلیانیلن برای تحریک الکتریکی Polyaniline (PANI) involved materials have extended approved applications in different fields, including bio/chemical-sensors, electrical and electrochemical devices, electrochemically active membranes and stimuli-responsive systems. These materials have attracted most of the interest in the field of development of biomaterials for …
ادامه مطلبEmerging artificial intelligence methods in structural engineering
روش های جدید هوش مصنوعی در مهندسی ساخت و ساز Artificial intelligence (AI) is proving to be an efficient alternative approach to classical modeling techniques. AI refers to the branch of computer science that develops machines and software with human-like intelligence. Compared to traditional methods, AI offers advantages to deal …
ادامه مطلبThe challenges in computer supported conceptual engineering design
چالش های رایانه در طراحی پشتیبانی مهندسی مفهومی چکیده: Computer Aided Engineering Design (CAED) supports the engineering design process during the detail design, but it is not commonly used in the conceptual design stage. This article explores through literature why this is and how the engineering design research community is …
ادامه مطلبThermal and electrical properties of siligraphene and its derivatives
خواص حرارتی و الکتریکی سیلیگرافی و مشتقات آن چکیده: The electrical and optical properties of siligraphene have been investigated in this paper using semi-classical Boltzmann equation and the WIEN2K code based on density functional theory. We studied two configurations of siligraphene (g-SiC3 and g-SiC7 with different concentration of Silicon); our …
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