With the success of Cloud computing, more and more websites have been moved to cloud platforms. The elasticity and high availability of cloud solutions are attractive features for hosting web applications. In particular, the elasticity is supported through trigger-based provisioning systems that dynamically add/release resources when certain conditions are met. However, when dealing with websit...

Effective and efficient Quality of Service (QoS) management is critical for a service grid to meet the requirements of both grid users and service providers. We introduce a scalable framework of service management in grid environment to guarantee the QoS of grid services. Several characters of our framework are 1) grid level resource reservation mechanism to use existing heterogeneous resource ...

This paper presents a case study on how to apply ITIL availability management best practice to assess the end-to-end service availability in a tiered web service delivery environment. It also helps pinpoint the road blocks to the required service level and provide cost-effective solution for improved service delivery. An overview of basic ITIL availability management concept is provided along w...

Novel automatized management systems for optical WDM networks promise to allow customers asking for a connection (i.e., a bandwidth service) to specify on-demand the terms of the Service Level Agreement (SLA) to be guaranteed by the Network Operator (NO). In this work, we exploit the knowledge, among the other Service Level Specifications (SLS), of the holding time and of the availability targe...

OBJECTIVE The purpose of this study was to provide a descriptive profile of the availability of limited service food outlets surrounding public schools in British Columbia, Canada. METHODS Data from the 2010 Canadian Business Data Files were used to identify limited service food outlets including fast food outlets, beverage and snack food stores, delis and convenience stores. The number of fo...

Œis paper presents SAFEBIKE, a novel route recommendation system for bike-sharing service that utilizes station information to infer the number of available bikes in dock and recommend bike routes according to multiple factors such as distance and safety level. Œe system consists of a station level availability predictor that predicts bikes and docks amount at each station, and an ef€cient rout...

despite all attractions of social participation in most parts of the rural development, due to the lack of practical approaches, it has just remained an advertising slogan. one of the necessities of rural development is the execution of plans which enjoy maximum social acceptance. one of these plans is locating and equipping high-order service settlements. using an operative process including e...

In principle, service orientation is a suitable paradigm to allow for effective resource sharing in wireless ad hoc networks. However, special attention needs to be paid to ensure a high service availability since this is the basis for reliable service execution. Unfortunately, typical characteristics of ad hoc networks like everchanging topology and limited resources have a dramatic negative e...

1 Abstract— Availability is one of the important factors to be considered for business-driven IT service management. This paper addresses the issue of analyzing what we call availability weak-points in an SOA deployment framework, leveraging workflow definitions to specify the high availability requirement at the business process level. In our weak-point analysis framework, we present an effect...