22 research outputs found

    Re-engineering Nascom's network management architecture

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    The development of Nascom systems for ground communications began in 1958 with Project Vanguard. The low-speed systems (rates less than 9.6 Kbs) were developed following existing standards; but, there were no comparable standards for high-speed systems. As a result, these systems were developed using custom protocols and custom hardware. Technology has made enormous strides since the ground support systems were implemented. Standards for computer equipment, software, and high-speed communications exist and the performance of current workstations exceeds that of the mainframes used in the development of the ground systems. Nascom is in the process of upgrading its ground support systems and providing additional services. The Message Switching System (MSS), Communications Address Processor (CAP), and Multiplexer/Demultiplexer (MDM) Automated Control System (MACS) are all examples of Nascom systems developed using standards such as, X-windows, Motif, and Simple Network Management Protocol (SNMP). Also, the Earth Observing System (EOS) Communications (Ecom) project is stressing standards as an integral part of its network. The move towards standards has produced a reduction in development, maintenance, and interoperability costs, while providing operational quality improvement. The Facility and Resource Manager (FARM) project has been established to integrate the Nascom networks and systems into a common network management architecture. The maximization of standards and implementation of computer automation in the architecture will lead to continued cost reductions and increased operational efficiency. The first step has been to derive overall Nascom requirements and identify the functionality common to all the current management systems. The identification of these common functions will enable the reuse of processes in the management architecture and promote increased use of automation throughout the Nascom network. The MSS, CAP, MACS, and Ecom projects have indicated the potential value of commercial-off-the-shelf (COTS) and standards through reduced cost and high quality. The FARM will allow the application of the lessons learned from these projects to all future Nascom systems

    Child mental health differences amongst ethnic groups in Britain: a systematic review

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    BACKGROUND: Inter-ethnic differences have been reported for many mental health outcomes in the UK, but no systematic review on child mental health has been published. The aim of this review is to compare the population-based prevalence of child mental disorders between ethnic groups in Britain, and relate these findings to ethnic differences in mental health service use. METHODS: A systematic search of bibliographic databases for population-based and clinic-based studies of children aged 0-19, including all ethnic groups and the main child mental disorders. We synthesised findings by comparing each minority group to the White British study sample. RESULTS: 31 population-based and 18 clinic-based studies met the inclusion criteria. Children in the main minority groups have similar or better mental health than White British children for common disorders, but may have higher rates for some less common conditions. The causes of these differences are unclear. There may be unmet need for services among Pakistani and Bangladeshi children. CONCLUSION: Inter-ethnic differences exist but are largely unexplained. Future studies should address the challenges of cross-cultural psychiatry and investigate reasons for inter-ethnic differences

    CMR: Contracts for the International Carriage of Goods by Road, 4th Edition

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    Now in its fourth edition, this hallmark text provides a comprehensive, article-by-article guide to the workings of the CMR Convention, as incorporated into English Law by the Carriage of Goods by Road Act 1965. This new edition is fully up to date with all major UK case law, plus major developments in the interpretation of the Convention in the case law of other Contracting States. Furthermore, the book includes expert guidance on the amendments introduced by the additional protocol concerning the electronic consignment note of 2008. The relationship between CMR and potentially conflicting legislation, in particular the Judgments Regulation of 2001 and the Judgments Regulation (recast) of 2012, are also usefully examined. Praised as well-written and extremely accessible, Messent and Glass offer a level of expert detail and referencing that cannot be found elsewhere. This work is an invaluable reference tool that can be used by the busy legal practitioner, and by other road haulage industry professionals, in any contracting state, to solve the issues that confront them in daily practice. It is also an indispensable guide for academics and students of the international carriage of goods by road
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