108,704 research outputs found

    Fibre composites for high pressure pipeline repairs, in-air and subsea: an overview

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    In 2001 it was reported that in North America alone, corrosion to the Oil & Gas pipeline distribution network cost approximately $2-3.3 billion per annum with 10% of that cost being associated with actual failure of the pipeline. In addition pipelines are also susceptible to erosion and mechanical damage producing further losses in pipe structural integrity. This results in high maintenance costs, possibility of adverse environmental consequences and the costly interruption to product transportation and distribution. The cost and technical challenges of adequately addressing repair are significant and greatly increase for underwater applications particularly with increasing water depth. It therefore induces the need of searching for alternative repair techniques involving new advanced materials for ease of installation and application against adverse environmental effects in the long run. Fibre composite materials provide excellent advantages over conventional metals in engineering practices for many decades. These advantages make fibre composite suitable candidate for effective repair technology. This paper provides a comprehensive review on the recent development and future prospect of using these materials for in-air and underwater pipeline external repairs. Various aspects of technical knowhow; benefits and shortcomings of the repair considerations are also presented

    Learning on The Fingertips: The Opportunities and Challenges of Educational Apps

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    Today, using spare time to learn is the key demands of mobile education field. With the characteristics of portability, educational Apps highly fit for this kind of demands, and contribute to the learning style on the fingertip, it becoming the new growth direction and growing point of mobile education. The understanding of the present situation and Prospect of educational Apps is the basis for further research on educational Apps. Based on introduction of educational Apps, this paper discussed the opportunities and challenges of educational Apps faced: mobile terminal and wireless network, the use habit of the user, mobile learning and online education market create good conditions for the development of educational Apps, at the same time, the imbalance of development, poor quality and unclear business model is the restriction factors of the development of educational Apps. This paper points out that enhance the quality, balanced development, enrich and develop market strategy is the key to make a breakthrough in the predicament, realize rapid development of educational Apps. Key words: Educational Apps, Mobile education, Mobile education Applicatio

    Social capital and sustainability of urban environmental groups in Perth

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    Community based environmental groups have become an integral component of urban environmental stewardship initiatives in Perth metropolitan area. While the utility of Urban Environmental Groups (UEGs) has been recognized by several environmental policies and programs, the challenges of sustaining UEGs remain under-explored, especially, in Western Australia. This paper responds to this gap and explores the prospect of UEGs’ sustainability through the lens of social capital. The findings of a quantitative survey of 81 groups as well as qualitative observations suggest UEGs that are better at building and maintaining social capital are more likely to overcome resource-scarcities and sustain over time. Based on the findings, the paper views social capital as a necessary ingredient of sustainable community groups and discusses the strategic needs to support UEGs

    Broadening the learning community : key messages

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    Commission v. Gazprom: The antitrust clash of the decade? CEPS Policy Brief No. 285, 31 October 2012

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    This new CEPS Policy Brief boldly asserts that the antitrust case launched by DG Competition against Gazprom on September 4th will turn out to be the landmark antitrust case of this decade, in much the same way that Microsoft v. Commission was the defining antitrust lawsuit of the last decade. The paper argues that, for a host of political and economic reasons, this case is likely to be hard fought by both sides to a final prohibition decision and then onwards into the EU courts. In the process, the European gas market and the powers of DG Competition in the energy field are likely to be transformed

    From Barcelona Process to Neighbourhood Policy: Assessments and Open Issues. CEPS Working Documents No. 220, 1 March 2005

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    The Barcelona process so far has been a valuable systemic/institutional advance in Euro-Med relations and a confidence-building measure on a large scale. But it has not been a sufficient driving force to have created a momentum of economic, political and social advance in the partner states. It is therefore quite plausible that the EU should seek some new advance – through the European Neighbourhood Policy (ENP) – to build on the positive features of Barcelona and so try to introduce some new driving force. The Action Plans currently being adopted seek to make the often vague intentions of the Association Agreements of the Barcelona process more operational by linking them to either domestic policy programmes of the partner state or to EU policy norms and standards as an external anchor. In this paper we first crystallise alternative approaches for the ENP to become a real driving force under the headings of ‘conditionality’ and ‘socialisation’. The conditionality concept would mean that the EU sets out i) what incentives it offers, and ii) the conditions on which these incentives would be delivered. The socialisation concept relies essentially on a learning process that comes from the extensive interaction between actors in the partner states and the EU, which induces the partner states to engage in policy reforms that are to a degree modelled on EU norms or derive some inspiration from them. For the EU to become a driving force for reform in the region also requires that it does not have to face an uphill struggle against negative tendencies, for example in the widening and deepening of radical Islam – and here the issue of coherence in the approaches of the EU and US together is paramount

    Challenges and opportunities to develop a smart city: A case study of Gold Coast, Australia

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    With the rapid growth of information and communication technologies, there is a growing interest in developing smart cities with a focus on the knowledge economy, use of sensors and mobile technologies to plan and manage cities. The proponents argue that these emerging technologies have potential application in efficiently managing the environment and infrastructure, promoting economic development and actively engaging the public, thus contributing to building safe, healthy, sustainable and resilient cities. However, are there other important elements in addition to technologies which can contribute to the creation of smart cities? What are some of the challenges and opportunities for developing a smart city? This paper aims to answer these questions by developing a conceptual framework for smart cities. The framework is then applied to the city of Gold Coast to identify challenges and opportunities for developing the city into a ‘smart city’. Gold Coast is a popular tourist city of about 600,000 populations in South East Queensland, Australia, at the southern end of the 240km long coastal conurbation that is centred by Brisbane. Recently, IBM has nominated Gold Coast as one of the three cities in Australia for its Smarter Cities Challenge Grant. The grant will provide the Gold Coast City Council with the opportunity to collaborate with a group of experts from IBM to develop strategies for enhancing its ICT arrangements for disaster response capabilities. Gold Coast, meanwhile, has potential to diversify its economy from being centred on tourism to a knowledge economy with focus on its educational institutions, investments in cultural precincts and high quality lifestyle amenities. These provide a unique opportunity for building Gold Coast as an important smart city in the region. As part of the research methodology, the paper will review relevant policies of the council. Finally, lessons will be drawn from the case study for other cities which seek to establish themselves as smart cities
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