نتایج جستجو برای: objective mathematical model is developed

تعداد نتایج: 8321572  

Bahram Dabir, Maryam Sadi

A Multi-objective optimization procedure has been developed to determine some kinetic parameters of free radical polymerization of vinyl acetate based on genetic algorithm. For this purpose, mathematical modeling of free radical polymerization of vinyl acetate is carried out first and then selected kinetic parameters are optimized by minimizing objective functions defined from comparing exp...

The major oil industry upstream activities include the exploration, drilling, extraction, pipelines installation, and production of crude oil. In this paper, we develop a mathematical model to plan for theseoperations as a crude oil supply chain network design problem.The proposed multi-period mixed integer linear programming model entails both strategic (e.g., facility location and allocation)...

Journal: :journal of industrial engineering and management studies 0
e. babaee tirkolaee department of industrial engineering, mazandaran university of science and technology, babol, iran. m. alinaghian department of industrial eengineering, isfahan university of technology, isfahan, iran. m. bakhshi sasi department of industrial eengineering, isfahan university of technology, isfahan, iran. m. m. seyyed esfahani department of industrial engineering, mazandaran university of science and technology, babol, iran.

the urban waste collection is one of the major municipal activities that involves large expenditures and difficult operational problems. also, waste collection and disposal have high expenses such as investment cost (i.e. vehicles fleet) and high operational cost (i.e. fuel, maintenance). in fact, making slight improvements in this issue lead to a huge saving in municipal consumption. some inci...

Amirhossein Kamali Dolat abadi Babak Abbasi, Mehrzad Abdi Khalife

In this paper, we considered solving approaches to flexible job shop problems. Makespan is not a good evaluation criterion with overlapping in operations assumption. Accordingly, in addition to makespan, we used total machine work loading time and critical machine work loading time as evaluation criteria. As overlapping in operations is a practical assumption in chemical, petrochemical, and gla...

Journal: :international journal of environmental research 2013
p.a. lópez-pérez m.i. neria-gonzález l.b. flores-cotera r. aguilar-lópez

in this work, an unstructured-type mathematical model was developed to simulatecadmium (cd2+) removal by desulfovibrio alaskensis 6sr, which is a recently described sulfatereducing bacterium, whose capacity for removing heavy metals are being studied. three processesare considered in the model: 1) the sulfate reduction process, 2) the consumption of lactate ascarbon source, and 3) the metal rem...

Journal: :international journal of environmental research 0
p.a. lópez-pérez department of biotechnology & bioengineering cinvestav-ipn, instituto politécnico nacional 2508, san pedro zacatenco, 07360 méxico, d.f. m.i. neria-gonzález chemical and biochemical engineering division, tecnológico de estudios superiores de ecatepec, tecnológico, 55210, valle de anáhuac, ecatepec de morelos, estado de méxico l.b. flores-cotera department of biotechnology & bioengineering cinvestav-ipn, instituto politécnico nacional 2508, san pedro zacatenco, 07360 méxico, d.f. r. aguilar-lópez department of biotechnology & bioengineering cinvestav-ipn, instituto politécnico nacional 2508, san pedro zacatenco, 07360 méxico, d.f.

in this work, an unstructured-type mathematical model was developed to simulatecadmium (cd2+) removal by desulfovibrio alaskensis 6sr, which is a recently described sulfatereducing bacterium, whose capacity for removing heavy metals are being studied. three processesare considered in the model: 1) the sulfate reduction process, 2) the consumption of lactate ascarbon source, and 3) the metal rem...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت معلم تهران - دانشکده علوم 1370

determination of uranium in natural water and complex solutions using ion exchange chromatography: a combined procedure using ion exchange chromatography and uv-vis spectrophotometry techniques has been developed to measure uranum in natural water and complex solutions. after conditicing , one hundred milli liters of sample solutions have been passed through an ion exchange column,pachked with ...

In present study, a mathematical model of the vehicle–floating slab track (FST) interaction is established to investigate the coupled behaviour of vehicle–track system. The FST is modelled as the double Euler -Bernoulli beam including the rail and slab. The railway vehicle is simplified as a multi-rigid-body model. The wheel–rail interface is treated using a nonlinear Hertzian contact model, co...

Journal: :journal of optimization in industrial engineering 2013
abolfazl kazemi abdolhossein sedighi

in many real world assembly line systems which the work-piece is of large size more than one worker work on the same work-piece in each station. this type of assembly line is called multi-manned assembly line (mal). in the classical multi-manned assembly line balancing problem (malbp) the objective is to minimize the manpower needed to manufacture one product unit. apart from the manpower, othe...

Journal: :مهندسی صنایع 0
علی بزرگی امیری استادیار دانشکده مهندسی صنایع- پردیس دانشکده های فنی- دانشگاه تهران سارا سادات ترکستانی دانشجوی دکتری مهندسی صنایع- دانشکده صنایع- دانشگاه علم و صنعت ایران امین سراجیان دانش آموخته کارشناسی ارشد مهندسی صنایع- دانشکده صنایع- دانشگاه علم و صنعت ایران

this paper proposes a new mathematical model for designing and planning postal parcels carriage and postal networks. the objective of postal network designing is to determine the location, size and connection between the postal stations in a city, province or country. in this paper, a kind of multiple locations-allocations hub problem with limited capacity in collecting, distributing and broadc...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید