revenue management is the process of accepting or ordering which increases gained revenue by using different techniques of pricing and selling capacity. this technique has improved greatly in service sector specially passenger section. in this article, the process of selling ticket in tehran-mashhad route for ghazal passenger train is modeled by two methods: static multi class and heuristic ems...

The content of social media has grown exponentially in the recent years and its role has evolved from narrating life events to actually shaping them. Unfortunately, content posted and shared in social networks is vulnerable and prone to loss or change, rendering the context associated with it (a tweet, post, status, or others) meaningless. The user sharing the resource has an implicit temporal ...

This paper presents a vision of an efficient minimal role for an independent system operator (ISO) in a competitive market for electric power. The ISO framework could be achieved during the final stages of the transition to the deregulated environment. The chief responsibility of the ISO will be to maintain system reliability at all times. To achieve this end, ISO only requires information abou...

A project, especially for one in China, usually involves many organizations and each organization may have multiple projects. There is a clear social network relationship between these stakeholders in a project and the stakeholders’ behaviors are also subject to the structure of the social network. Based on an analysis of the social network, as a methodology that can be used to explain the rela...

Software project management has always faced challenges that have often had a great impact on the outcome of projects in future. For this, Managers of software projects always seek solutions against challenges. The implementation of unguaranteed approaches or mere personal experiences by managers does not necessarily suffice for solving the problems. Therefore, the management area of software p...

In a fuzzy project network, the higher risk path is called possible critical path. Secondary critical path is one of the possible critical path in fuzzy project network and it plays an important role in the project scheduling, risk analysis and time-cost trade-off problems in fuzzy environment. In this paper, triangular fuzzy numbers are used to express the operation times for all activities in...

objectives: the iranian cancer network was established in may 2003. our aim was to coordinate re search and treatment programs in all cancer centers in iran in order to save time and money and enable patients, wherever they live, to receive a uniformly high-standard treatment and care. methods: after signing a mutual contract with fellow (collaborator) university and holding some shared session...

Environmental impacts assessment may be some measures to offset the impact to an acceptable level or explore new solutions. The research was conducted with the aim of assessing the socio-economic, cultural, physical and ecological impacts of Kavar irrigation and drainage network in Fars Province (Iran). In this study, Environmental impacts assessment was undertaken by ICOLD matrix. The ICOLD ma...