Improved consumer addressability in electronic markets allows vendors to send focused promotional messages to specific customers, facilitating a targeted advertising approach that we call “narrowcasting”. We characterize a rational consumer’s market participation decision and identify a narrowcasting firm’s optimal targeting decision when buyers face nontrivial search costs. In the special case...

Electronic intermediaries enable and support electronic markets with their services. This paper provides a framework based on industrial dynamics theory, for the analysis of the influence of electronic intermediaries on the performance of markets. We define five market performance indicators based on the analysis of 10 well-described cases from the literature on electronic markets that were set...

With the advent of the Internet, we have seen existing markets transform and new ones emerge. In this paper, we contribute to the understanding of this phenomenon by developing a unified theory about the role that IT plays in affecting market information, transparency and market structure. In particular, we introduce a new theoretical framework which uncovers the process and the forces that, to...

Negotiation can be regarded as playing a game with certain rules. If the rules change, the game has to be played differently. Compared to traditional markets, electronic markets can have fundamentally different characteristics such as cost structure or the level of transparency. These differences have already stimulated the tremendous success of one breed of electronic market negotiations: auct...

Kutum, Rutilus frisii kutum, is an commercially important fish in the Caspian Sea. The fish enters the rivers leading to the Caspian Sea for spawning. One of these rivers is Shiroud River. In the artificial propagation process of Kutum, different factors are involved in quality and quantity of female broods eggs and also in the best temperature and migration time for spawning. The influence of ...

Concentrations of heavy metals were determined in muscles of Kutum (Rutilus frisii kutum) collected from the central part of the southern end of the Caspian Sea during February 2011. Except for silver (Ag) and nickel (Ni) which were below the limits of detection, the average levels of arsenic (As), cadmium (Cd), copper (Co), chromium (Cr), copper (Cu), iron (Fe), manganese (Mn), lead (Pb), sele...

recently the previous caspian ecosystem is in a catastrophic condition which caused changes in the absolute and relative abundance of the commercially important caspian kutum (rutilus frisii kutum) in iranian waters. the paper presents estimates of yield-per-recruit and spawning biomass-per-recruit under various harvest strategies of fmax, f0.1, f30%. it proposes a method for estimating accepta...

caspian kutum, rutilus frisii kutum, is one of the most commercially important fish species in the caspian sea, but there are few reports about the endocrinology of induced spawning in this fish. in the present study, 54 individuals of female broodstocks of kutum were studied for quantity and quality of propagation index, during march and april 2007. hormone treatments include: lhrh-a2 (1 ?g kg...

Several authors have argued that because modern computing and communications technologies reduce buyer search costs and other market inefficiencies, there should be intense price competition between sellers in electronic markets. This paper examines this prediction using data on the airline ticket offerings of online travel agents (OTA). We find that different OTAs offer tickets with substantia...

legal actions remains sufficiently predictable. Such predictions on legal conflicts have to be shared among economic actors to stabilize mutual expectations of behavior. This stability then helps to reduce legal risks. Predictability is not necessarily related to precise legal knowledge. It is sufficient to know when legal specialists have to get involved. Economic actors prepare for such situa...