نتایج جستجو برای: stochastic activity network

تعداد نتایج: 1873755  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1389

abstract: country’s fiber optic network, as one of the most important communication infrastructures, is of high importance; therefore, ensuring security of the network and its data is essential. no remarkable research has been done on assessing security of the country’s fiber optic network. besides, according to an official statistics released by ertebatat zirsakht company, unwanted disconnec...

This paper investigates the integration of strategic and tactical decisions in the supply chain network design (SCND) considering assembly line balancing (ALB) under demand uncertainty. Due to the decentralized decisions, a novel bi-level stochastic programming (BLSP) model has been developed in which SCND problem has been considered in the upper-level model, while the lower-level model contain...

2008
Rouaa Yassin Kassab Aad van Moorsel

This paper provides an outline for generating Möbius reward constructs and a partial Stochastic Activity Network model from an existing Web Service Level Agreement (WSLA) document of a web service system. This is done by parsing the WSLA document to group its ‘Service Level Agreement parameter elements’ with their corresponding ‘metric elements’ using the Document Object Model parser. These gro...

This paper proposes a bi-objective reliable supply chain network design that immunizes the network against different sources of uncertainties. In this regard, scenario based stochastic programming method is applied to model different disruption scenarios affecting accurate performance of network stages. Also, reliable and unreliable facilities are suggested for lessening vulnerability of networ...

M. Rabbani, S. M. T. Fatemi Ghomi,

Considering the network structure is one of the new approaches in studying stochastic PERT networks (SPN). In this paper, planar networks are studied as a special class of networks. Two structural reducible mechanisms titled arc contraction and deletion are developed to convert any planar network to a series-parallel network structure.&#10In series-parallel SPN, the completion time distribution...

Journal: :J. Economic Theory 2002
Matthew O. Jackson Alison Watts

We examine the dynamic formation and stochastic evolution of networks connecting individuals. The payoff to an individual from an economic or social activity depends on the network of connections among individuals. Over time individuals form and sever links connecting themselves to other individuals based on the improvement that the resulting network offers them relative to the current network....

2002
HATSUO HAYASHI SATORU ISHIZUKA

Evidence for chaos in the brain has been provided using CA3 slices of the rat hippocampus. It has also been reported that a CA3 network model developed on the basis of physiological knowledge reproduces complex activity including chaos. Complex CA3 activity is projected to CA1 through Schaffer collaterals, and integrated EPSPs evoked in CA1 pyramidal cells are noisy. On the other hand, perforan...

Journal: :avicenna journal of medical biotechnology 0

although, coumarins are a group of compounds which are naturally found in some plants, they can be synthetically produced as well. because of their diverse derivatives, origin and properties most of them can be used for medicinal purposes. for example, they can be used against fungal diseases or in studying structure and biological properties of antifungal agents to discover new compounds with ...

1989
John F. Meyer K. H. Muralidhar William H. Sanders

Local area networks are representative of a growing class of distributed systems which demand more sophisticated methods and tools to evaluate system behavior in the presence of faults. In particular, since they are likely to exhibit degradable performance, the concept of performability can provide more re ned assessments of their ability to perform under fault and error conditions. This paper ...

Journal: :مدیریت اطلاعات سلامت 0
یاسمن کتابی پزشکی عمومی، دانشکده پزشکی، دانشگاه علوم پزشکی شهید بهشتی، تهران، ایران سعیده کتابی دانشیار، تحقیق در عملیات، گروه مدیریت، دانشکده علوم اداری و اقتصاد، دانشگاه اصفهان و مرکز تحقیقات مدیریت و اقتصاد سلامت، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران

introduction : it is clear that if the discharge process takes less time and the patient leaves the hospital bed earlier, the length of hospitalization, and consequently, the waiting time for admission decreases. therefore, the method of use of treatment facilities is somewhat improved. the hospital discharge process, from when the discharge authorization is issued until the patient leaves the ...

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