Project portfolio selection to improve safety in the construction industry under fuzzy environments

Taha-Hossein Hejazi; Shahin Behboodi; Fatemeh Abbaszadeh

Volume 10, Issue 1 , July 2023, , Pages 169-180

  Generally, the safety management system (SMS) introduced in 1980 focuses on reducing the risk of potential injuries and fatalities in the construction industry. The key to considering the challenges of project safety management and risk assessment in the construction industry as a hazardous industry ...  Read More

Optimal design of a multi-period supply chain network with unreliable elements: A two-stage stochastic programming approach

Alireza Homayounmehr; Taha-Hossein Hejazi

Volume 9, Issue 1 , July 2022, , Pages 120-135

  The management and design of supply chain networks in various dimensions are so critical today that managers' decisions significantly impact the configuration and flow of material in the network. Above all, supply chain management intends to reduce costs. The inability to accurately predict certain features, ...  Read More

Partial inspection problem with double sampling designs in multi-stage systems considering cost uncertainty

Taha-Hossein Hejazi; Pardis Roozkhosh

Volume 6, Issue 1 , June 2019, , Pages 1-17

  The nature of input materials is changed as long as the product reaches the consumer in many types of manufacturing processes. In designing and improving multi-stage systems, the study of the steps separately may not lead to the greatest possible improvement in the whole system, therefore the study of ...  Read More

Designing Effective Strategies to Improve Performance Indicators of Bread Industry Using System Dynamics: A case study in Iran

Z. Arastia; T.H. Hejazi; Z. Geilari

Volume 2, Issue 1 , June 2015, , Pages 74-94

  Iranian bread production methods are often unsanitary, in the last decades, different attempts were made to mechanize production of Iranian breads, but a few of them, due to a variety of factors, could succeed. The aim of this study is to examine various factors affecting the system of bread production ...  Read More

A novel approach in robust group decision making for supply strategic planning

T.H. Hejazi; I. Soleimanmeigouni

Volume 1, Issue 1 , November 2014, , Pages 20-30

  Long-term planning is a challenging process for dealing with problems in big industries. Quick and flexible process of responding to the existing variable requirements are considered in such problems. Some of important strategic decisions which should be made in this field are, namely the way that manufacturing ...  Read More