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Articles by Morteza Araghi
Total Records ( 2 ) for Morteza Araghi
  Shahriar A. Zargari , Morteza Araghi and Kouros Mohammadian
  To overcome deficiencies of the sequential transportation planning approach, this research applies a Combined Trip Distribution and Assignment Model (CTDAM) for the simultaneous prediction. The proposed combined model can itself be reformulated as an Equivalent Minimization Problem (EMP). When applying the Evans algorithm to the EMP, the CTDAM is expected to be usable in a realistic application. The objective of this research is to compare the conventional sequential procedure and CTDAM by applying both models to a large urban transportation network for captive trip purposes. Several evaluation measures were utilized to compare the results and confirm that the proposed model can efficiently satisfy several convergence criterions. It became clear that the User Equilibrium (UE) assignment in the proposed model can be obtained relatively swifter than the Sequential Model (SM) and can be efficiently used in large transportation networks. Furthermore, the comparing results point out the performance of the CTDAM is significantly better than SM.
  Morteza Araghi
  The research was descriptive and correlational and also a field study, a questionnaire was used. The study population was citizens of Tehran City that 403 people filled questionnaires with reliability coefficient of 0.77. To ensure the normal distribution of data the Kolmogorov-Smirnov test was used. Validation using confirmatory factor analysis and structural equation models was done. Four hypothesis were accepted and the results showed that environmental factors, driver behavior and traffic congestion can affect the amount of accidents. Accident estimations variable can also affect damage rate estimation. To examine the propriety of structural model we used some of important indexes and this showed that study data had proper propriety with factorial structure and its theoretical infrastructure that is study questions are consistent with theoretical structures. Finally, the sample was determined by calculating the efficiency index and the present sample results can be generalized to the population under study.
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