One of the substantial challenges in marketing efforts is determining optimal markets, specifically in market segmentation. The problem is more controversial in electronic commerce and electronic marketing. Consumer behaviour is influenced by different factors and thus varies in different time periods. These dynamic impacts lead to the uncertain behaviour of consumers and therefore harden the t...

We study equilibria of markets with m heterogeneous indivisible goods and n consumers withcombinatorial preferences. It is well known that a competitive equilibrium is not guaranteedto exist when valuations are not gross substitutes. Given the widespread use of bundling inreal-life markets, we study its role as a stabilizing and coordinating device by considering thenotion of co...

in this paper, the value of exchange rate was calculated in order to determine comparative advantage in crops of sari township during 2009-2010. hence, first, comparative advantage indices are estimated by using a policy analysis matrix. the results showed that just wheat has a drc index of one in the minimum amount of national currency exchange rate value. this indicated the fact that only whe...

 International trade causes that markets to become more competitive and small-medium sized enterprises (SMEs) learn to compete effectively within this increasingly competitive global market place. SMEs are able to take advantage of increased opportunities in domestic markets that follow from international trade. It is indeed a way for internationalization of SMEs. This paper analyzes income and...

This paper presents a competitive supply chain network design problem in which one, two, or three supply chains are planning to enter the price-dependent markets simultaneously in uncertain environments and decide to set the prices and shape their networks. The chains produce competitive products either identical or highly substitutable. Fuzzy multi-level mixed integer programming is used to mo...

Nowadays, in turbulent and violate global markets, agility has been considered as a fundamental characteristic of a supply chain needed for survival. To achieve the competitive edge, companies must align with suppliers and customers to streamline operations, as well as agility beyond individual companies. Consequently Agile Supply Chain (ASC) is considered as a dominant competitive advantage.  ...

Selecting approaches with appropriate accuracy and suitable speed for the purpose of making decision is one of the managers’ challenges. Also investing decision is one of the main decisions of managers and it can be referred to securities transaction in financial markets which is one of the investments approaches. When some assets and barriers of real world have been considered, optimization of...

The main business of an investment company is to hold and manage securities for investment purposes. In today competitive market Pricing and its methodology are complicated motions. It is very important to define a price that can prevail the competition in an open and free market. In order to define the price certain circumstances should be considered. In the academic arena there have been seve...