242,375 research outputs found

    Port choice by intra-regional container service operators : an application of decision-making techniques to liner services between Malaysian and other Asian ports

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    Intra-regional container service operators are challenged to design regular and reliable liner services connecting regional ports at the lowest cost and shortest transit time while considering customer demand. This paper focuses on the selection of ports of call in regular intra-regional container services, an under-researched part of the container shipping market. A combination of decision-making techniques (i.e. Analytical Hierarchy Process, fuzzy link-based and Evidential Reasoning) are presented to assist intra-regional container service operators in selecting ports of call. The proposed methodology is empirically applied to container services between Malaysian and other nearby Asian ports. While Port Klang is the main gateway to Malaysia, the results show that other Malaysian ports should play a more prominent role in accommodating intra-Asian container services. This research can assist maritime stakeholders in evaluating intra-regional port-to-port liner service configurations. Furthermore, the novel mix of decision-making techniques complements and enriches existing academic literature on port choice and liner service configuration

    Assessing database and network threats in traditional and cloud computing

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    Cloud Computing is currently one of the most widely-spoken terms in IT. While it offers a range of technological and financial benefits, its wide acceptance by organizations is not yet wide spread. Security concerns are a main reason for this and this paper studies the data and network threats posed in both traditional and cloud paradigms in an effort to assert in which areas cloud computing addresses security issues and where it does introduce new ones. This evaluation is based on Microsoft’s STRIDE threat model and discusses the stakeholders, the impact and recommendations for tackling each threat

    Requirements traceability in model-driven development: Applying model and transformation conformance

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    The variety of design artifacts (models) produced in a model-driven design process results in an intricate relationship between requirements and the various models. This paper proposes a methodological framework that simplifies management of this relationship, which helps in assessing the quality of models, realizations and transformation specifications. Our framework is a basis for understanding requirements traceability in model-driven development, as well as for the design of tools that support requirements traceability in model-driven development processes. We propose a notion of conformance between application models which reduces the effort needed for assessment activities. We discuss how this notion of conformance can be integrated with model transformations

    Teaching and learning of performance measurement in OR/MS degrees

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    A review of existing UK MS/OR undergraduate programmes was completed to assess the extent and nature of performance measurement teaching. In addition, a survey of performance measurement practitioners was undertaken to obtain views on what should be taught in relation to performance measurement. A survey of 23 undergraduate MS/OR degrees in the UK revealed that all the academic respondents supported the inclusion of PM teaching. However, only four distinct PM classes could be found amongst these degrees. The PM techniques taught were broadly similar although the wider context of PM was taught in only 2 of the classes. A survey of a small number of PM practitioners revealed that the Balanced Scorecard and Benchmarking were the two most commonly applied PM techniques with the majority of respondents learning about PM from personal experience and reading rather than through formal education. It appears that there is an opportunity for MS/OR teaching to make a major contribution to the development of PM as a discipline. However, academic respondents whose MS/OR degree course did not teach PM indicated that lack of staff expertise in PM combined with an already full syllabus were the main barriers to introducing a PM class

    Proposal for a Performance Dashboard for the Monitoringof Water and Sewage Service Companies (WaSCs)

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    The water and sewage industry provides an essential service to the community, but it is characterized by natural monopoly tendencies of service suppliers. In this framework, it is very important to assist regulators with a small set of critical indicators (performance dashboard) for the evaluation and monitoring of the service provided by Water and Sewage Companies (WaSCs). The paper originates from the analysis of situation of Piemonte (Italy), where each regional and local body adopts a proprietary Performance Measurement System (PMS). In order to improve the coordination of information flow and to support the definition of common service standards, a methodology to merge existing PMSs and define a unique shared reference system is proposed. The Kaplan and Norton's Balanced Scorecard (BSC) is adopted as the reference model of this approach. BSC is widely recognized to be an exhaustive and balanced framework in describing the performances of an organization and ensures that all the operational aspects of WaSCs are adequately monitored. The output of the proposed procedure is a general performance dashboard for the monitoring of WaSCs. The dashboard is shown and some remarks about indicators properties are developed. In particular, this analysis highlights some common pitfalls originated by a ‘rushed' aggregation of several performance indicators. Description is supported by several example

    A qualitative study of parents' experiences using family support services: applying the concept of surface and depth

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    UK policy and practice endorses family support for child well-being. Achieving such support requires multi-agency approaches, that consider all aspects of parents’ and children’s lives and which offer practical, social and emotional help. The potential for services to make a positive impact on parents and their families will depend in part on the level and nature of engagement. In this paper a case is made for the application of the two-part ‘surface and depth’ concept for understanding how practitioners engage with families and how they might improve the chances of supporting sustainable differences for parents and families. To illustrate, qualitative data from a review of family centre support provided by a north of England local authority, are presented. The review was commissioned to explore why families often need to re-engage with intensive support services. Data are drawn from interviews with parents (n=18, recruited following a survey of all those registered with the service during April – May 2009) and discussions with family centre support workers (n=4) and following thematic analysis three dominant themes emerged: ‘resources available’, ‘staff approach’ and ‘real life’, were appraised in light of the ‘surface and depth’ concept. Much of the work with parents effectively dealt with pressing needs. This felt gratifying for both parent and worker and supported immediate service engagement. However, each noted that the more complex issues in parents’ lives went unchallenged and thus the sustainability of progress in terms of parenting practice was questionable. A ‘strengths focused’ approach by staff, that understood needs in the context of parents’ ‘real life’ circumstances was important to parent engagement. Thus, longer term benefits from family support requires practitioners to work with parents to problem solve immediate issues whilst also digging deeper to acknowledge and seek to resolve the more complex challenges parents face in their real lives
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