89,655 research outputs found

    The economics of accreditation

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    This paper is a report on a research project on the economics of accreditation in the UK. The main motivation and objective for the study is to have available a detailed analysis of how the accreditation system impinges on important aspects of economic life, such as innovation and business and economic performance. It aims to improve the general understanding of the benefits of using accredited conformity assessment and to help businesses make informed decisions when procuring conformity assessment and related services. It is also intended to be helpful to government by supporting evidence-based policy making in relation to accreditation and conformity assessmen

    A Low Cost Two-Tier Architecture Model For High Availability Clusters Application Load Balancing

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    This article proposes a design and implementation of a low cost two-tier architecture model for high availability cluster combined with load-balancing and shared storage technology to achieve desired scale of three-tier architecture for application load balancing e.g. web servers. The research work proposes a design that physically omits Network File System (NFS) server nodes and implements NFS server functionalities within the cluster nodes, through Red Hat Cluster Suite (RHCS) with High Availability (HA) proxy load balancing technologies. In order to achieve a low-cost implementation in terms of investment in hardware and computing solutions, the proposed architecture will be beneficial. This system intends to provide steady service despite any system components fails due to uncertainly such as network system, storage and applications.Comment: Load balancing, high availability cluster, web server cluster

    A Real-time Network Emulator: ADLARS Case Study

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    As testing and benchmarking performance of web services and networked applications has proven to be cost-effective, and crucial in some applications, increased significance has been attached to the development of hardware and software network emulators and simulators. In this paper, we discuss a possible design of a light-w eight real-time IP network emulator that can provide the same functionality and performance as hardware simulators. Also, as the systematic software engineering discipline has become a necessity in the software development life-cycle, we present a possible approach, utilizing mature software engineering disciplines, for building the software architecture of the emulator. We then use ADLARS [1], an A rchitecture D escription Language for Real-time Systems developed within our research team to describe the architecture. The emulator’s architecture serves as a good test-bed for our ADL because of its real-time and concurrent nature. We conclude by testing our design and presenting a possible JAVA instantiation of the emulator over a UNIX system

    Innovation dynamics and the role of infrastructure

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    This report shows how the role of the infrastructure – standards, measurement, accreditation, design and intellectual property – can be integrated into a quantitative model of the innovation system and used to help explain levels and changes in labour productivity and growth in turnover and employment. The summary focuses on the new results from the project, set out in more detail in Sections 5 and 6. The first two sections of the report provide contextual material on the UK innovation system, the nature and content of the infrastructure knowledge and the institutions that provide it. Mixed modes of innovation, the typology of innovation practices developed and applied here, is constituted of six mixed modes, derived from many variables taken from the UK Innovation Survey. These are: Investing in intangibles Technology with IP innovating Using codified knowledge Wider (managerial) innovating Market-led innovating External process modernising. The composition of the innovation modes, and the approach used to compute them, is set out in more detail in Section 4. Modes can be thought of as the underlying process of innovation, a bundle of activities undertaken jointly by firms, and whose working out generates well known indicators such as new product innovations, R&D spending and accessing external information, that are the partial indicators gathered from the innovation survey itself
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