سید محمد سیدحسینی

The issue of transportation, which today as a socio-political phenomenon plays a very sensitive and important role in the quality and socio-economic structure of a society, forms the basis of modern urban life and the needs of human movement. In this research, our goal is to design a system dynamics model in the form of combined transport system to try to reduce costs, time and increase customer satisfaction by taking into account the uncertainty in the combined transport system, especially uncertainty in demand. Considering the productivity required by both of passengers and urban management, the importance of the issue and its impact on other sectors, as well as the lack of sufficient research in this field, in this study, the design of intra-city transportation system will be studied. The purpose of this planning is to determine the location of stations for public transportation as well as to determine the best route to reach the next station. Initially, the IoT system is used to collect and analyze historical data. Then the effective parameters and input values of the mathematical programming model are determined. The implementation of the model determines the appropriate outcomes for the decision variables. In other words, this leads to determining the optimal stations and the appropriate route to transport passengers between stations so that travel time and cost are minimized. In addition to material profitability, this includes passenger satisfaction, increased willingness to use public transport, reduced traffic, and reduced environmental impact, increased reliability of public transport and more accurate forecast of vehicle arrival at the station.

Considering the goals of sustainable development, numerous studies and research have been conducted in the field of supply chain sustainability. While some articles have addressed the social sustainability dimensions of the supply chain, there is a lack of integrated and comprehensive models to assess the performance of these chains in social sustainability dimensions, especially concerning decent work criteria. The present research aims to design a model for the maturity of decent work in the sustainable pharmaceutical supply chain. This research is an applied study from the perspective of objectives and descriptive research methodologically. The research population in the qualitative section consisted of experienced experts in the field of supply chain and decent work, and for this purpose, 15 individuals were selected and interviewed. After designing the initial model, in the qualitative section and initial screening of dimensions and components, 84 concepts remained in the model.