This paper presents a model and theory for streaming layered video. We model the bandwidth available to the streaming application as a stochastic process whose statistical characteristics are unknown a priori. The random bandwidth models short term variations due to congestion control (such as TCP-friendly conformance). We suppose that the video has been encoded into a base and an enhancement l...

Replicating web services over physically distributed servers can offer client applications a number of QoS benefits, including higher availability and reduced response time. However, selecting the ‘‘best” service replica to invoke at the client-side is not a trivial task, as this requires taking into account factors such as local and external network conditions, and the servers’ current workloa...

In this paper, we describe a multidatabase system as 4-tiered Client-Server DBMS architectures. We discuss their functional components and provide an overview of their performance characteristics. The first component of this proposed system is a web-based interface or Graphical User Interface, which resides on top of the Client Application Program, the second component of the system is a client...

Modelling the behavior of a system as a set of cooperating nets requires to define a high-level communication protocol which takes into account the very nature of their interactions. This paper proposes to adapt the client-server protocol promoted by the object-oriented approach to Petri nets, and to compose Petri nets according to this protocol.This protocol relies upon four basic rules which ...

Case conceptualization is a foundation of cognitive-behavioural therapy (CBT) because it describes and explains clients’ presentations in ways that inform interventions. Yet the evidence base challenges the claimed benefits of case conceptualization. This paper reviews the rationale and evidence base for case conceptualization and outlines a new approach that uses the metaphor of a case concept...

Recently, Virtual Desktop Infrastructure (VDI) has been widely adopted to ensure secure protection of enterprise data and provide users with a centrally managed execution environment. However, user experiences may be restricted due to the limited functionalities of thin clients in VDI. If thick client devices like laptops are used, then data leakage may be possible due to malicious software ins...

Streaming media in 3G wireless networks means the streaming server must simultaneously adapt the media content to two mediums of drastically different characteristics: an often congested wired network and an unreliable wireless link. To improve the server’s media adaptiveness, we enhance a previously proposed network proxy, located at the junction of the wired network and wireless link, to prov...

OBJECTIVE Client satisfaction with mental health services is used commonly as an indicator of the quality of care, but there is minimal research on the construct of client satisfaction in youth services, and the extent to which satisfaction is related to improvements in clinical functioning versus other determinants. We examined the relationship between parent and youth satisfaction with youth ...

In this paper, we present a novel algorithm for VANET using cloud computing. We accomplish processing, routing and traffic control in a centralized and parallel way by adding one or more server to the network. Each car or node is considered a Client, in such a manner that routing, traffic control, getting information from client and data processing and storing are performed by one or more serve...