One of the most studied issues in production planning or inventory management is to get the lowest possible cost with the satisfied service rate (less waiting time). Analyzing and comparing two main stream methods which are used for solving complex system – System Dynamics Model(SDM) and Agent Based Model (ABM), studying the characteristics of these two methods, and attempting to transfer a com...

The replacement of an existing product with a new one presents many challenges. In particular, uncertainties in a new product introduction often lead to extreme cases of demand and supply mismatches. This paper addresses inventory planning decisions for product upgrades when there is no replenishment opportunity during the transition period. We allow product substitution: when a company runs ou...

In this paper, an inventory replenishment model for deteriorating items is developed. Demand for the item varies with time over a finite planning horizon, during which shortages are allowed and are completely back-ordered. The objective is to determine a replenishment policy that minimizes the total inventory cost. A search procedure based on Genetic Algorithm (GA) is presented and illustrated ...

Aalto University, P.O. Box 11000, FI-00076 Aalto www.aalto.fi Author Markus Holopainen Name of the doctoral dissertation Effect of airborne laser scanning accuracy on forest stock and yield estimates Publisher School of Engineering Unit Department of Surveying Series Aalto University publication series DOCTORAL DISSERTATIONS 6/2011 Field of research Real Estate Economics Manuscript submitted 16...

Remanufacturing activity views the reverse supply chain of reclaimed goods as integral to the traditional supply chain to the consumer. At the end of the useful life of products, a reverse supply process is activated in which unwanted materials and products are recovered from end users to recapture some of their value. Therefore, planning for the traditional supply chain of goods must take into...

In Finland, the forest inventory for the forest management planning has traditionally been based on visual inventory by stands. In this method, the forest stands that are delineated on aerial photographs on the basis of their growing stock and site-related characteristics are measured or estimated in the field. The method is considered too labour-intensive, and it requires a large amount of fie...

Due to global competition and dynamic market environment, a major challenge in enterprisewide optimization [1-3] has become to simultaneously optimize the production planning and inventory control decisions for chemical complexes under demand and supply uncertainty [4, 5]. Because chemical complexes are usually composed of many interconnected processes and various chemicals, it is an important ...

W e consider firms that feature their products on the Internet but take orders offline. Click and order data are disjoint on such non-transactional websites, and their matching is error-prone. Yet, their time separation may allow the firm to react and improve its tactical planning. We introduce a dynamic decision support model that augments the classic inventory planning model with additional c...

purpose: the aim of present study was to examining the psychometric properties of the iranian version of short dark triad (sd3) in students. methodology: the study sample consisted of bu-ali sina university students in 2015-2016. 376 students were selected based on multi-stage cluster sampling. to study psychometric characteristics of the scale, dark triad scale was translated with double-trans...