Copyright 2000 / All rights reserved Companies of every sort are rushing to “.com” their businesses, creating new opportunities and challenges for service providers. As a result, these providers need ways to quickly differentiate themselves in the marketplace and to provide a highly reliable, scalable, and available level of service. In this article, Fred describes new CompactPCI solutions that...

Distributed denial-of-service (DDOS) attacks have emerged as a prevalent way to compromise the availability of networks/servers, which imposed financial losses for e-commerce businesses. Many defenses that mitigate the effect of ongoing DDOS attacks have been proposed. However, none of the defenses have been widely deployed on the Internet infrastructure at this point because of a lack of under...

Background In early 2012, National Health Insurance Scheme (NHIS) members in Ashanti Region were allowed to choose their own primary healthcare providers. This paper investigates the factors that enrolees in the Ashanti Region considered in choosing preferred primary healthcare providers (PPPs) and direction of association of such factors with the choice of PPP.   Methods Using a cross-sectiona...

Highly available Web-based applications require designs that address issues not only of availability, but also of reachability and performance. This article defines high availability and presents approaches for producing maintainable, highly available Web applications. This author cites the Global Combat Support System-Air Force, a network-centric, common technical services-based highly availab...

Internet is open 24 hours a day, 7 days a week, so hardware, software, and communications must be always online. Additionally, the total number of users and its workload is completely unpredictable. If you decide to use web services, you will have no solution for problems like those. This paper shows a new technique that can be applied to web services technology in order to be able to deploy we...

With the number of e-Business applications dramatically increasing, a service level agreement (SLA) will play an important part in Web services. The SLA is a combination of several quality of services (QoS), such as security, performance, and availability, agreed between a customer and a service provider. Most existing research addresses only one of these QoS metrics. Furthermore, in the case o...

Service compositions put together loosely-coupled component services to perform more complex, higher level, or cross-organizational tasks in a platform-independent manner. Quality-of-Service (QoS) properties, such as execution time, availability, or cost, are critical for their usability, and permissible boundaries for their values are defined in Service Level Agreements (SLAs). We propose a me...

OBJECTIVE Traditionally, health systems in sub-Saharan Africa have focused on acute conditions. Few data exist on the readiness of African health facilities (HFs) to address the growing burden of chronic diseases (CDs), specifically chronic, non-communicable diseases (NCDs). METHODS A stratified random sample of 28 urban and rural Ugandan HFs was surveyed to document the burden of selected CD...

UNLABELLED We describe a fold level fast protein comparison and motif matching facility based on the TOPS representation of structure. This provides an update to a previous service at the EBI, with a better graph matching with faster results and visualization of both the structures being compared against and the common pattern of each with the target domain. AVAILABILITY Web service at http:/...

Recently, there has been substantial research in the area of reliability and availability for Internet services. Typically, availability is measured according to the number of 9 s metric, which provides a measure of the percentage of availability of a system over the course of a year. This paper explores the necessity of high availability for Internet services given the relative availability of...