124,733 research outputs found

    Reducing the delivery lead time in a food distribution SME through the implementation of six sigma methodology

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    Purpose – Six sigma is a systematic data driven approach to reduce the defect and improve the quality in any type of business. The purpose of this paper is to present the findings from the application of six sigma in a food service “small to medium sized enterprise” (SME) in a lean environment to reduce the waste in this field. Design/methodology/approach – A simplified version of six sigma is adopted through the application of appropriate statistical tools in order to focus on customer's requirements to identify the defect, the cause of the defect and improve the delivery process by implementing the optimum solution. Findings – The result suggests that modification in layout utilization reduced the number of causes of defect by 40 percent resulting in jumping from 1.44 sigma level to 2.09 Sigma level which is substantial improvement in SME. Research limitations/implications – Simplicity of six sigma is important to enabling any SME to identify the problem and minimize its cause through a systematic approach. Practical implications – Integrating of supply chain objectives with any quality initiatives such as lean and six sigma has a substantial effect on achieving to the targets. Originality/value – This paper represents a potential area in which six sigma methodology along side the lean management can promote supply chain management objectives for a food distribution SME

    The Scalability-Efficiency/Maintainability-Portability Trade-off in Simulation Software Engineering: Examples and a Preliminary Systematic Literature Review

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    Large-scale simulations play a central role in science and the industry. Several challenges occur when building simulation software, because simulations require complex software developed in a dynamic construction process. That is why simulation software engineering (SSE) is emerging lately as a research focus. The dichotomous trade-off between scalability and efficiency (SE) on the one hand and maintainability and portability (MP) on the other hand is one of the core challenges. We report on the SE/MP trade-off in the context of an ongoing systematic literature review (SLR). After characterizing the issue of the SE/MP trade-off using two examples from our own research, we (1) review the 33 identified articles that assess the trade-off, (2) summarize the proposed solutions for the trade-off, and (3) discuss the findings for SSE and future work. Overall, we see evidence for the SE/MP trade-off and first solution approaches. However, a strong empirical foundation has yet to be established; general quantitative metrics and methods supporting software developers in addressing the trade-off have to be developed. We foresee considerable future work in SSE across scientific communities.Comment: 9 pages, 2 figures. Accepted for presentation at the Fourth International Workshop on Software Engineering for High Performance Computing in Computational Science and Engineering (SEHPCCSE 2016

    The political economy of education systems in conflict-affected contexts

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    This report is a rigorous literature review on the political economy of education systems in conflict-affected contexts and is aimed at education advisers and agencies, development practitioners and Ministry of Education policy makers working in conflict-affected contexts. The report seeks to provide theoretically informed and policy relevant insights on the global, national and local governance of education systems in conflict-affected contexts garnered from a rigorous review of the academic and policy literature on the political economy of education in conflict-affected contexts. The review was driven by three main questions: (1) What are the underpinning assumptions of the main bodies of political economy research in education and conflict? (2) What can the political economy of education literature since 1990 inform us about educational change and reform in conflict-affected contexts? (3) What are the strengths, weaknesses, blind spots and research gaps in the political economy of education literature exploring the governance of educational change and reform in conflict-affected contexts? Chapter 1 outlines the rationale and aims of the review. Chapter 2, describes the theoretical and conceptual framework and presents the framing of the key issues under review, and Chapter 3 outlines the review methodology. Chapter 4 presents the main characteristics and an assessment of the quality of the studies selected for the in-depth review, and Chapter 5, discusses the review’s main findings. Chapter 6 presents the conclusions of the study, outlines a theory of change that emerges from the findings and draws out the policy insights and research gaps for future study

    The Political Economy of Education Systems in Conflict-Affected Contexts: A Rigorous Literature Review

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    This report is a rigorous literature review on the political economy of education systems in conflict-affected contexts and is aimed at education advisers and agencies, development practitioners and Ministry of Education policy makers working in conflict-affected contexts. The report seeks to provide theoretically informed and policy relevant insights on the global, national and local governance of education systems in conflict-affected contexts garnered from a rigorous review of the academic and policy literature on the political economy of education in conflict-affected contexts.<p></p> The review was driven by three main questions: (1) What are the underpinning assumptions of the main bodies of political economy research in education and conflict? (2) What can the political economy of education literature since 1990 inform us about educational change and reform in conflict-affected contexts? (3) What are the strengths, weaknesses, blind spots and research gaps in the political economy of education literature exploring the governance of educational change and reform in conflict-affected contexts?<p></p> Chapter 1 outlines the rationale and aims of the review. Chapter 2, describes the theoretical and conceptual framework and presents the framing of the key issues under review, and Chapter 3 outlines the review methodology. Chapter 4 presents the main characteristics and an assessment of the quality of the studies selected for the in-depth review, and Chapter 5, discusses the review’s main findings. Chapter 6 presents the conclusions of the study, outlines a theory of change that emerges from the findings and draws out the policy insights and research gaps for future study

    Statistical parsing of morphologically rich languages (SPMRL): what, how and whither

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    The term Morphologically Rich Languages (MRLs) refers to languages in which significant information concerning syntactic units and relations is expressed at word-level. There is ample evidence that the application of readily available statistical parsing models to such languages is susceptible to serious performance degradation. The first workshop on statistical parsing of MRLs hosts a variety of contributions which show that despite language-specific idiosyncrasies, the problems associated with parsing MRLs cut across languages and parsing frameworks. In this paper we review the current state-of-affairs with respect to parsing MRLs and point out central challenges. We synthesize the contributions of researchers working on parsing Arabic, Basque, French, German, Hebrew, Hindi and Korean to point out shared solutions across languages. The overarching analysis suggests itself as a source of directions for future investigations

    Microservices Architecture Enables DevOps: an Experience Report on Migration to a Cloud-Native Architecture

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    This article reports on experiences and lessons learned during incremental migration and architectural refactoring of a commercial mobile back end as a service to microservices architecture. It explains how the researchers adopted DevOps and how this facilitated a smooth migration

    Architecture-based Qualitative Risk Analysis for Availability of IT Infrastructures

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    An IT risk assessment must deliver the best possible quality of results in a time-effective way. Organisations are used to customise the general-purpose standard risk assessment methods in a way that can satisfy their requirements. In this paper we present the QualTD Model and method, which is meant to be employed together with standard risk assessment methods for the qualitative assessment of availability risks of IT architectures, or parts of them. The QualTD Model is based on our previous quantitative model, but geared to industrial practice since it does not require quantitative data which is often too costly to acquire. We validate the model and method in a real-world case by performing a risk assessment on the authentication and authorisation system of a large multinational company and by evaluating the results w.r.t. the goals of the stakeholders of the system. We also perform a review of the most popular standard risk assessment methods and an analysis of which one can be actually integrated with our QualTD Model
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