We are proud to announce the publication of the issue 4 of volume 3 of Journal of systems thinking in practice. An Analysis of Supply Chain Macro-Strategies in the Context of Industry 4.0 with a System Dynamics Approach (The Case of: Iran's Steel Supply Chain) Developing a Multi methodology for Identification and Prioritization of Supply Chain Marketing Strategies for Biotechnology Knowledge-based Companies Dynamic Modeling of Controllable Returns in E-commerce: The Impact of Seller Restrictions on Platforms Factors Affecting the Effectiveness of Scientific Elites in Society: A Systems Thinking Approach A System Dynamics Model to Evaluate the LARG Supply Chain Elements in the Automotive Industry Providing a Model of Customer Experience Management Based on Knowledge Management Models in the Field of Fintech Using Machine Learning #systemsthinking #systemdynamics #softoperationalresearch #optimalcontrol #Simulation #SystemsEngineering 🔹🔹🔹🔹🔹🔹🔹🔹🔹🔹🔹 stinp.um.ac.ir @STinP