نتایج جستجو برای: multi purpose optimization

تعداد نتایج: 1210861  

2006
Stefan Holzer Martin Wagner Alireza Sheikholeslami Markus Karner Gerhard Span Tibor Grasser Siegfried Selberherr

We present the capabilities of our optimization framework in conjunction with typical applications for thermal problems. Our software package supports a wide range of simulators and optimization strategies to improve electronic devices in terms of speed, reliability, efficiency, and to reduce thermal degradation due to mechanical influences. Moreover, we show several optimization examples, wher...

Journal: :international journal of automotive engineering 0
h. shojaeefard m. etghani tahani akbari

in this study the performance and emissions characteristics of a heavy-duty, direct injection, compression ignition (ci) engine which is specialized in agriculture, have been investigated experimentally. for this aim, the influence of injection timing, load, engine speed on power, brake specific fuel consumption (bsfc), peak pressure (pp), nitrogen oxides (nox), carbon dioxide (co2), carbon mon...

Journal: :international journal of automotive engineering 0
a. khalkhali s. samareh mousavi

in order to reduce both the weight of vehicles and the damage of occupants in a crash event simultaneously, it is necessary to perform a multi-objective optimization of the automotive energy absorbing components. in this paper, axial impact crushing behavior of the aluminum foam-filled thin-walled tubes are studied by the finite element method using commercial software abaqus. comparison of the...

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 computer and robotics 0
seyed mahmood hashemi school of computer engineering, darolfonoon high educational institute, qazvin, iran

fuzzy clustering methods are conveniently employed in constructing a fuzzy model of a system, but they need to tune some parameters. in this research, fcm is chosen for fuzzy clustering. parameters such as the number of clusters and the value of fuzzifier significantly influence the extent of generalization of the fuzzy model. these two parameters require tuning to reduce the overfitting in the...

Journal: :international journal of advanced design and manufacturing technology 0
y.j. xu e. padayodi s. a. bahrani d. chamoret

to achieve an excellent thermal-mechanical performance of cmcs, it is necessary to analyze and design the thickness of the multi-layered interphases for an optimized trs distribution. an optimization was performed with a new version of the particle swarm optimization, the bsg-starcraft radius pso linked to a finite element software.

Ebadijalal, M., Gholizadeh, S.,

The objective of the present paper is to propose a sequential enhanced colliding bodies optimization (SECBO) algorithm for implementation of seismic optimization of steel braced frames in the framework of performance-based design (PBD). In order to achieve this purpose, the ECBO is sequentially employed in a multi-stage scheme where in each stage an initial population is generated based on the ...

2015
Michal Pluhacek Roman Senkerik Ivan Zelinka Tomas Bata

In this paper the performance of Multi-chaotic PSO algorithm is investigated using two shifted benchmark functions. The purpose of shifted benchmark functions is to simulate the time-variant real-world problems. The results of chaotic PSO are compared with canonical version of the algorithm. It is concluded that using the multi-chaotic approach can lead to better results in optimization of shif...

Journal: :journal of industrial strategic management 2014
s.a sheybatolhamdi m hemati m. esfandiar

in financial matters, portfolio can be interpreted as a combination or a series of investments hold by an institution or a person. portfolio optimization is one of the most important concerns of investors for maximizing the portfolio in financial markets. the formation of portfolio is a vital and critical decision for the companies.  in fact, the selection of portfolio is to specify the capital...

Journal: :PeerJ PrePrints 2016
Simone Lanucara Paola Carrara Alessandro Oggioni Michela Rogora Lyudmila Kamburska Giampaolo Rossetti

Water quality is a multi-source, multi-purpose problem that needs exploiting observations, often taken by a number of heterogeneous bodies. This problem has been tackled within the Italian Long Term Ecological research network (LTER-Italy) in an experiment aimed at testing how ecological observations of mountain lakes water can be shared by OGC (Open Geospatial Consortium) standard services of ...

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