The efficiency and effectiveness of procurement processes perform a critical role in the smooth operation organizations, particularly industries with intricate supply chains, such as aviation sector. This thesis focuses on delayed lead time purchase requisitions to orders for standard part commodities inside Procurement Department. Through comprehensive analysis workflow, data collection, inter...

iran's apparel market is currently filled with foreign brands that are generally ranked as high quality goods with high prices. with a surface examination of the apparel market and customers’ opinions, it can be concluded that iranian apparel, despite having lower prices, is not in a suitable status in comparison with its foreign counterparts. accordingly, the purpose of this paper is to e...

abstract awareness of consumer reasons during nutrition choice is very important, because this decision directly affect their health. since beef is one of the essential goods in consumer basket of goods of iranian households, exploring of factors that influence consumers purchase decisions and intentions toward imported frozen beefs in east azerbaijan province – tabriz city is the purpose of th...

Recently, and especially in expanding markets, firms put an extraordinary emphasis on customer satisfaction, sometimes treating it as a superior measure of a company performance to current earnings. While customer satisfaction increases future profits through the effect of positive consumer feedback on future demand, customer satisfaction efforts have a shortterm cost. Therefore, a question ari...

E-commerce researchers and managers have known for some time that Long-Tail effects on pricing and product purchase are an important way in which internet retail differs from traditional “brick & mortar” businesses. These Long Tail effects are often directly attributed to lower search costs. Using a transaction-level model we provide important evidence that the principal impact of a reduction i...

Retail prices are volatile and decrease over time in many markets for differentiated durable goods. Consumers in these markets have an incentive to delay their purchase and wait for lower prices. This paper uses a novel data set from a price alert service for TVs sold on Amazon.com to estimate substitution patterns across products and over time. Users of a price alert service submit a price thr...

Recommender systems are widely used in online stores because they are expected to improve both user convenience and online store profit. As such, a number of recommendation methods have been proposed in recent years. Functions required for recommender systems vary significantly depending on business models or/and situations. Although an online store can acquire various kinds of information abou...

Dynamic causal mining (DCM) assists decision makers in controlling a system at decision points by converting data into policies. DCM searches for simultaneous dynamic causal relations in a database and discovers delay and feedback relationships between attributes based on separate time stamps. This makes the algorithm more suitable for dynamic modeling and enables the discovery of hidden dynami...

For the purchase of a cheaper product on the Internet, many customers have been trying to search online shopping mall sites and visit comparison-pricing shops that compare prices and other criteria of the product. Others have been participating into online auction markets or group-buying markets. However, a lot of online shopping malls, auction markets, and group-buying markets provide the same...