Buyer coalition with a combination of items is a group of buyers joining together to purchase a combination of items with a larger discount. The primary aim of existing buyer coalition with a combination of items research is to generate a large total discount. However, the aim is hard to achieve because this research is based on the assumption that each buyer completely knows other buyers’ info...

The need to securely share information on an ad-hoc basis between collaborating entities is increasingly becoming important. We propose a coalition based access control model (CBAC), comprised of three layers: coalition, role and user-object. Our model enables translation of coalition level policies to implementation level access control in a manner similar to that of the layers of the TCP/IP p...

The distributed, heterogeneity, and dynamic nature of the coalition context has raised the need for new advanced technologies. These technologies aim at managing the coalition informational infrastructure, in terms of autonomy, adaptability, and scalability. To achieve this support, Software Agents (SAs) seem to be a promising approach. To develop this approach, different aspects of a coalition...

This paper studies the stability of the coalition government formed in 1993 in Japan, called the Hosokawa government, by using a dynamic coalition formation model presented in Fukuda and Muto [2]. Ono and Muto [6] studied the stability of the same coalition government by applying the static coalition formation model of Hart and Kurz [4], which employed Owen’s [7] coalition value to measure part...

We take a cross-layer optimization approach to study energy efficient data transport in coalition-based wireless sensor networks, where neighboring nodes are organized into groups to form coalitions and sensor nodes within one coalition carry out cooperative communications. In particular, we investigate two network models: (1) many-to-one sensor networks where data from one coalition are transm...

OBJECTIVE To explore the relationship between polymorphisms of XbaI and MspI loci of apolipoprotein B (ApoB) gene and -75 bp, +83 bp loci of apolipoprotein AI (ApoAI) gene and coronary heart disease (CHD) in Kazaks of Xinjiang Uyghur Autonomous Region, China. METHODS These loci were analyzed by PCR-restriction fragment length polymorphism (PCR-PFLP). Two hundred and five patients with CHD and...