Improving the availability of services of is a key issue for survivability of a cluster system. Lots of schemes are proposed for this purpose. But most of them aim at enhancing only the service-level availability or application specific. In this paper, we propose a scheme called High Availability with Redundant TCP Stacks (HARTs), providing connection-level availability by exploring the redunda...

Cisco’s Service-Level Assurance Protocol (Cisco’s SLA Protocol) is a Performance Measurement protocol that has been widely deployed. The protocol is used to measure service-level parameters such as network latency, delay variation, and packet/frame loss. This document describes the Cisco SLA Protocol Measurement-Type UDP-Measurement, to enable vendor interoperability.

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 incorporate QoS management into Open Grid Services Architecture (OGSA) and provide a high-level middleware to build complex applications with QoS guarantees. We introduce a scalable framework of information service in which capabilities...

the purpose of this research is to explore the relationship between after sales service quality and customer satisfaction in informatics services corporation. based on available literature review and guidance of professors and expert people, after sales service elements were identified, which are contact, responsiveness, personnel efficiency, system/product efficiency, system availability, cust...

Distributed services that are accessed by widely distributed clients are becoming common place (e.g., especially services targeted to the home). Such services cannot be provided at the needed level of performance and availability(1) without replicating the service at multiple nodes, and (2) without allowing a \relatively" weak level of consistency among replicated copies of the state of a servi...

The telecommunication industry traditionally uses clusters to meet its carrier-class requirements of high availability and reliability. As security has also become a major issue, a Distributed Security Infrastructure (DSI) has been initiated for carrier-class Linux clusters. DSI is a security framework which focuses on providing distributed security services and simplifying security administrat...

Introduction: There is an enormous interest about improving international comparisons to provide relevant information for policy and planning in mental health. Most of the available information is provided at the macro-level (countries or regions). However, information gathered at the meso-level may diverge from data aggregated at higher territorial levels. Objectives: This study describes the ...

introduction: the success of a health system depends on the accessibility and the quality of health services it provides. one major indicator of service quality is peoples satisfaction from the service. in this article, healthcare availability and satisfaction of people in 17th zone of tehran is investigated. methods: population research center has performed a survey in 17th zone of tehran to i...