in this research the activity of 75 producers, 55 wholesalers and 55 retailers, citrus market of jahrom county was investigated. the results indicated that margin of wholesale, retail and total margin of citrus in this county was 1461.1, 1480.3, and 2941.4 rs respectively. share of producer from marginal price was estimated to be 57.9 percent and share of wholesaler was more than retailer. in t...

Submitted: Aug 10, 2013; Accepted: Sep 6, 2013; Published: Sep 11, 2013 Abstract: A market of services that provide communications between B2B, B2G, B2C segments and inside these segments is referred to as advertising market. Today advertising market is the one of the most dynamically growing market in the world and an important sector of economy. It is characterized by high rate of turnover of...

To cope with changes in industrial concentration, consumer preferences, more stringent meat safety measures by the governmental agencies, and the U.S.-Canada Free Trade Agreement and the North America Free Trade Agreement, companies in the U.S. meat industry need to attain as high levels of technical efficiency as possible. The purpose of the study is three-fold: (1) measure the level of pure t...

Although layered coding solutions elegantly handle bandwidth heterogeneity among users in video conferencing, they also incur significant rate and complexity overheads. An alternative is partitioning the receiver sets and using non-layered coding for each group. In this paper, we investigate how to maximize the received video quality for both systems under uplink and downlink capacity constrain...

The cost efficiency and diversity of digital channels facilitate marketers’ frequent and interactive communication with their customers. Digital channels like the Internet, email, mobile phones and digital television offer new prospects to cultivate customer relationships. However, there are a few models explaining how digital marketing communication (DMC) works from a relationship marketing pe...

Traditional DEA models ignore the internal process of production systems and are not able to identify the cause of deficiency in efficiencies measuring. At this research, traditional DEA model and two-stage DEA model were used to measure the efficiency of Iranian private insurance companies during 2007-2009. The results indicated that the traditional DEA model is not suitable for such kind of n...

The transition of the advertisement market from traditional media to the internet has induced a proliferation of marketing agencies specialized in bidding in the auctions used to sell advertisement space on the web. We analyze how collusive bidding can emerge from bid delegation to a common marketing agency and how this undermines both revenues and efficiency of both the generalized second pric...

in this research, interval efficiency of butchery units of zabol city using model of interval data envelopment analysis was measured, and factors of effective on it was studied. data for this research obtained via completing questionnaires and use of method of sampling randomized for 2010 years. the results showed that efficiency maximum of 50% of butcheries is less than 40% and efficiency mini...