bus systems are unstable without considering any control. thus, we are able to consider some control strategies to alleviate this problem. a holding control strategy is one commonly used real-time control strategy that can improve service quality. this paper develops a mathematical model for a holding control strategy. the objective of this model is to minimize the total cost related to passeng...

the arc costs are assumed to be online parameters of the network and decisions should be made while the costs of arcs are not known. the policies determine the permitted nodes and arcs to traverse and they are generally defined according to the departure nodes of the current policy nodes. in on-line created tours arc costs are not available for decision makers. the on-line traversed nodes are f...

Disk drives are now available with capacities on the order of hundreds of gigabytes. What has not become available is an easy way to manage storage. With installed machines located across the enterprise, the backup, management of application installation, and maintenance of systems have become a nightmare. An increasing trend in the storage industry is to virtualize storage resources, maintaini...

http://thorax.bmj.com/content/65/9/763.full.html Updated information and services can be found at: These include: References http://thorax.bmj.com/content/65/9/763.full.html#ref-list-1 This article cites 32 articles, 31 of which can be accessed free at: service Email alerting box at the top right corner of the online article. Receive free email alerts when new articles cite this article. Sign u...

In this paper we propose a narrative hypothesis on the nature of language and a proto-discursive hypothesis on the origin of our communicative abilities. Our proposal is based on two assumptions. The first assumption, concerning the properties of language, is tied to the idea that global discourse coherence governs the origin of our communicative abilities as well the functioning of these abili...