one of the most important issues in urban planning is developing sustainable public transportation. the basic condition for this purpose is analyzing current condition especially based on data. data mining is a set of new techniques that are beyond statistical data analyzing. clustering techniques is a subset of it that one of it’s techniques used for analyzing passengers’ trip. the result of t...

In this research, a hierarchical location-allocation problem is modeled in a queue framework. The queue model is considered as M/M/1/k, in which system capacity is finite, equals to k. This is the main contribution of the current research. Customer's enters to the system in order to find the service according to a Poisson. In this problem, the hierarchical location-allocation model is considere...

There exist various service systems that have hierarchical structure. In hierarchical service networks, facilities at different levels provide different types of services. For example, in health care systems, general centers provide low-level services such as primary health care services, while the specialized hospitals provide high-level services. Because of demand congestion in service networ...

Background and Objectives: Outsourcing has been considered by hospital managers as a model to reduce the financial burden and modify the financial system. The external suppliers must be qualified for the services they ought to provide to the hospitals. The use of the Balance Scorecard and the Analysis of Hierarchical Process can help assessing suppliers' capability to solve exi...

To effectively measure supply chain performance is one of the most important aspects for supply chain management, which can help decision makers analyze the historical performance and current status, and can help them set future performance targets. We firstly base on the Supply Chain Operations Reference-model (SCOR-model) to construct an index system for evaluating the supply chains’ overall ...

Background: The transtheoretical model (TTM) is used as a framework to implement smoking cessation programs. This model has some subscales based on which the smoking temptation scale is proposed as stages movement factor. This study aimed to translate and validate the temptation subscales of the TTM questionnaire in the Iranian population. Methods...