Hybrid content delivery networks (HCDN) benefit from the complementary advantages of P2P (Peer to Peer) networks and CDNs (Content Delivery Network). In order to extend a traditional CDN and enable it to offer hybrid content delivery service, we have modified a traditional domain name system-based request routing mechanism. The proposed scheme relies on an oligopolistic mechanism to balance the...

BACKGROUND Prescribing policy recommendations aimed at moving immunosuppressant prescribing for renal transplant patients from primary to secondary care may result in benefits of increased safety and reduced cost. However, there is little evidence of patients' preferences for receiving their immunosuppressant therapy from hospitals compared to community dispensing. The aim of this study was to ...

As a recently emerging service, multiview video provides a new viewing experience with a high degree of freedom. However, due to the huge data amounts transferred, multiview video’s delivery remains a daunting challenge. In this paper, we propose a multiview video-streaming system based on IP multicast. It can support a large number of users while still maintaining a high degree of interactivit...

This paper examines the costs of delivering screening, brief intervention, and referral to treatment (SBIRT) services within the first seven demonstration programs funded by the US Substance Abuse and Mental Health Services Administration. Service-level costs were estimated and compared across implementation model (contracted specialist, inhouse specialist, inhouse generalist) and service deliv...

objective: most previous retrospective studies failed to show a consistent association between pre-hospital time intervals and mortality in trauma patients, bringing the recommendation of “transport fast to increase survival” under question. the aim of this study was to evaluate the association of response time, scene time, and transport time with 24-hour in-hospital mortality.   methods: in th...

In this paper, we introduce a reliable directory service and message delivery mechanism for large-scale mobile agent systems to address both agent mobility and directory service node failures. The mechanism enables each mobile agent to keep its forwarding pointer only on the small number of its visiting nodes in an autonomous manner. As this desirable feature has every mobile agent’s migration ...

In the stochastic and dynamic multi-stage vehicle routing problem, a set of vehicles collectively transports and services demands which require service at multiple spatially separated locations. Arrival times and service locations of individual demands are not known until the demand’s arrival, and vehicles are assumed to have infinite capacity and to travel with bounded velocity. The objective ...

OBJECTIVE To identify the factors that are associated with uptake of skilled delivery services during child delivery among women of reproductive age in Garissa town. DESIGN Cross sectional study. SETTING Garissa town. SUBJECT Three hundred and thirty four women aged 15-49 years who had had at least one delivery in their lifetime were asked about the type of delivery services they had duri...

True VoD systems provide interactive on-demand video service by allocating each client a dedicated stream. Such a scheme is inefficient when the system has a large number of users. A more scalable solution is to use a combination of multicast and unicast channels with client buffering. The present paper shows the design of a VoD proxy server that accepts interactive commands from the users usin...