مدیریت زنجیره تامین با رویکردهای ناب و چابک: کاربرد پویایی ‌های سیستم

مدیریت زنجیره‌ تامین با انتخاب، ترکیب و اجرای رویکردهای ناب و چابک به علت تضادها و استراتژی‌های متفاوت هریک و از سوی دیگر هم‌افزایی آن‌ها یکی از چالش‌های اساسی مدیران است. پژوهش حاضر با هدف توسعه سیستمی برای انتخاب رویکردهای ناب و چابک در زنجیره تامین انجام شده است و شامل دو مرحله می‌باشد. در مرحله کیفی با رویکرد تحلیل محتوا و بررسی ادبیات و پیشینه پژوهش عوامل موثر بر انتخاب رویکردهای چابک و ناب گردآوری شده است. فرایند جمع‌آوری داده‌ها و کدگذاری به‌صورت زیگزاگی تا رسیدن به اشباع نظری انجام شده است. نهایتاً این کدها در 17 گروه و در 4 سطح کلی عوامل محیطی، عوامل مرتبط با سازمان، عوامل مرتبط با محصول و عوامل عملکردی طبقه‌بندی شده است. در مرحله کمی ‌و با بهره‌گیری از روش پویایی‌های سیستم، با استفاده از عوامل به دست آمده از مرحله اول و استراتژی‌های ناب و چابک، مدلی جهت ارزیابی عملکرد و انتخاب استراتژی‌های مناسب در شرایط مختلف ارائه شده است. مدل‌های علی و معلولی و حالت-جریان ترسیم شده و تست ارزیابی مدل، ارزیابی ساختار و تحلیل حساسیت نیز جهت تایید اعتبار مدل انجام گرفته است. نهایتاً سناریوهای مختلف در این مدل شبیه‌سازی و بررسی شده است. مدل پویای ارائه شده قادر است در شرایط مختلف استراتژی‌های از رویکردهای ناب و چابک را بررسی نموده و نهایتاً درجات خاصی از نابی و چابکی را ارائه دهد. اطلاعات مورد نیاز برای مدل‌سازی و شبیه‌سازی مدل از مجتمع صنایع لاستیک یزد گردآوری شده است.

supply chain management with lean and agile approaches applying: system dynamics

due to the contradictions of lean and agile approaches and meanwhile, their synergy, choosing, combining, and implementing these approaches with specific goals, strategies, and limitations is a key challenge for supply chain managers. the current research aimed to develop a dynamic system for implementing lean and agile approaches in the supply chain.  2- theoretical frameworksupply chain management includes the planning and management of all activities involved in the supply chain and is considered a vital factor in the competitiveness of organizations. lean and agile approaches are among the popular approaches in supply chain management. lean philosophy seeks to eliminate waste and reduce costs based on more output with fewer resources according to customers’ needs. governing lean thinking and principles in the value stream is called lean supply chain management. quick response to changes in demand, in terms of volume and variety, is called agility. the concept of this approach refers to choosing the right strategy in conditions of uncertainty and providing products and services to customers at the right time and place. empowering new competencies to respond quickly and effectively to the market is called agile supply chain management. these two approaches have different drivers, prerequisites, and strategies, and each one pursues a specific goal. 3- methodologythe present study is in the category of qualitative-quantitative research. based on the stages of research in the conceptual development stage, the model is placed in the category of qualitative research. at this stage, by content analysis of the research background, factors affecting the selection of agile and lean approaches have been identified. this stage includes four main steps: problem definition, data collection, analysis, and presentation of the final model. in the quantitative stage, using the system dynamics method, using the factors obtained from the first stage and lean and agile strategies, a model has been presented to evaluate the performance and choose the appropriate strategies in different conditions. causal models and state flow have been drawn and model evaluation tests, structure evaluation, and sensitivity analysis have been done to confirm the model validity. finally, different scenarios have been simulated and analyzed in this model. the information required for modeling and simulating the model has been collected from the yazd rubber industries complex. 4- results discussionin the qualitative stage and after content analysis by reviewing articles and zigzag coding, 106 codes from 31 studies were identified as open codes. in this study, it was done. by repeatedly reviewing the identified primary codes and comparing them, the codes with common content and concepts were classified under one concept. in this way, 40 subgroups were extracted. finally, these codes were classified into 17 groups and 4 general levels of environmental, organization-related, product-related, and functional factors. after extracting the influencing factors on the selection of lean and agile approaches, the flow model has been presented and evaluated in vansim software. after obtaining the valid model, by changing different variables and scenario analysis, approaches have been analyzed in three different scenarios.