Efficiency decomposition for multi-level multi-components production technologies

tight frame approximation for multi-frames and super-frames

در این پایان نامه یک مولد برای چند قاب یا ابر قاب تولید شده تحت عمل نمایش یکانی تصویر برای گروه های شمارش پذیر گسسته بررسی خواهد شد. مثال هایی از این قاب ها چند قاب های گابور، ابرقاب های گابور و قاب هایی برای زیرفضاهای انتقال پایاست. نشان می دهیم که مولد چند قاب تنک نرمال شده (ابرقاب) یکتا وجود دارد به طوری که مینیمم فاصله را از ان دارد. همچنین مسایل مشابه برای قاب های دوگان مطرح شده و برخی ...

A Ratio-Based Efficiency Measurement for Ranking Multi-Stage Production Systems in DEA

Conventional data envelopment analysis (DEA) models are used to measure efficiency score of production systems when they are considered as black boxes and their internal relationship is ignored. This paper deals with a common special case of network systems which is called multi-stage production system and can be generalized to many organizations. A multi stage production system has some stages...

Domain Decomposition and Multi - Level Type Techniquesfor

Building a Multi-Objective Model for Multi-Product Multi-Period Production Planning with Controllable Processing Times: A Real Case Problem

Model building is a fragile and complex process especially in the context of real cases. Each real case problem has its own characteristics with new concepts and conditions. A correct model should have some essential characteristics such as: being compatible with real conditions, being of sufficient accuracy, being logically traceable and etc. This paper discusses how to build an efficient mode...

A Heuristic for Decomposition in Multi-Level Logic Optimization

In this paper, we propose a new heuristic to find common subexpressions of given Boolean functions based on Shannon-type factoring. This heuristic limits the search space of finding common subexpressions considerably by applying a top-down approach. In this top-down approach, synthesis of a Boolean network flows from the primary outputs to the primary inputs. The common subexpressions and their...