امیرسامان خیرخواه
استادیار دانشکده مهندسی گروه مهندسی صنایع دانشگاه بوعلی سینا
[ 1 ] - ارایه الگوریتمی برای مدل کنترل موجودی (R,Q) با تابع تقاضای احتمالی و متاثر از مقدار کمبود
در این تحقیق سیستم سفارش‌های مستمر با اضافه کردن محدودیت تاثیرپذیری تقاضا از متوسط درصد کمبود بررسی شده که در آن بین افزایش مقدار کمبود و تعداد دفعات رخ دادن آن با کاهش تقاضا و انصراف مشتریان رابطه مستقیم وجود دارد. هدف از محدودیت فوق، مدل سازی هزینه‌های مرتبط با کسر اعتبار سازمان در فضای رقابتی است. در این تحقیق، ابتدا مدل ریاضی مساله مورد بررسی ارایه و سپس با توجه به پیچیدگی آن با دو الگو...
[ 2 ] - مدلسازی عدم تقارن اطلاعات در مساله حمله به شبکه حمل و نقل مواد خطرناک
در این مقاله، مساله توزیع مواد خطرناک در شرایطی مورد بررسی قرار میگیرد که در آن از یک سو، توزیعکننده درصدد انتخاب مسیرهای اقتصادی با کمترین هزینه بر روی شبکه است و از سوی دیگر به منظور افزایش ایمنی حمل مواد خطرناک، آژانسی نظارتی به عنوان مهاجم، در صدد است که تصمیم توزیعکننده برای عبور از کمانهای شبکه را تحت کنترل قراردهد و در صورتیکه توزیعکننده از این کمانها عبور نماید، از وی جریمه دریاف...
[ 3 ] - بهبود فرایند مدیریت بیمار در اورژانس با شبیه سازی (PROMETHEE) و روش پرامیتی
Introduction: This article proposes a method which could improve the performance of an Emergency Department (ED) in a large hospital in Tehran, where the long waiting times cause patients’ and ED staff ’s dissatisfaction. ED is considered as a bottleneck in hospitals. To reduce long waiting time and improve patient satisfaction, application of system improvement methods is required....
[ 4 ] - Considering Pricing Problem in a Dynamic and Integrated Design of Sustainable Closed-loop Supply Chain Network
Flexible and dynamic supply chain network design problem has been studied by many researchers during past years. Since integration of short-term and long-term decisions in strategic planning leads to more reliable plans, in this paper a multi-objective model for a sustainable closed-loop supply chain network design problem is proposed. The planning horizon of this model contains multiple strate...
[ 5 ] - Supplier Selection in Three Echelon Supply Chain & Vendor Managed Inventory Model Under Price Dependent Demand Condition
This paper, considers the supplier selection in three echelon supply chain with Vendor Managed Inventory (VMI) strategy under price dependent demand condition. As there is a lack of study on the supplier selection in VMI literature, this paper presents a VMI model in supply chain including multi supplier, one distributer and multi retailer that distributer selects suppliers. Two class models (t...
[ 6 ] - A revised Fuzzy - PROMETHEE method , using Fuzzy Distance and Similarity Measures
PROMETHEE refers to a collection of methods of ranking in the field of multi-criteria decision making. These methods are characterized by conceptual simplicity and practical applicability. However, the nature of phenomena involving decision-making in real world leads us to use fuzzy method of preference ranking. The most common criticism on mathematical ranking procedures is that they tend to d...
[ 7 ] - Considering chain to chain competition in forward and reverse logistics of a dynamic and integrated supply chain network design problem
In this paper, a bi-objective model is presented for dynamic and integrated network design of a new entrant competitive closed-loop supply chain. To consider dynamism and integration in the network design problem, multiple long-term periods are regarded during planning horizon, so that each long-term period includes several short-term periods. Furthermore, a chain to chain competition between t...
[ 8 ] - Iranian Railway System Performance Analysis Using Computer Simulation and Data Envelopment Analysis Methods
In this paper, a discrete event simulation model of Iranian railway system is used for analyzing performance of the system in freight sector. The model analysis shows more sensitivity of the system on loading and unloading facilities than on number of wagons and locomotives. System optimization through simulation optimization technique, shows that more than 4% of all wagons available in the n...