54,178 research outputs found

    Citation chain aggregation: An interaction model to support citation cycling

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    This is the postprint version of the conference paper.Citation chaining is a powerful means of exploring the academic literature. Starting from just one or two known relevant items, a naïve researcher can cycle backwards and forwards through the citation graph to generate a rich overview of key works, authors and journals relating to their topic. Whilst online citation indexes greatly facilitate this process, the size and complexity of the search space can rapidly escalate. In this paper, we propose a novel interaction model called citation chain aggregation (CCA). CCA employs a simple three-list view which highlights the overlaps that occur between the first-generation relations of known relevant items. As more relevant articles are identified, differences in the frequencies of citations made by or to unseen articles provide strong relevance feedback cues. The benefits of this technique are illustrated using a simple case study

    Investigating the role of innovation over collaborative relation intensity in supply chains

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    This paper discusses investigating the role of innovation over collaborative relation intensity in supply chains. It was presented at the 17th international conference of the European operations management association

    World cities and global commodity chains: an introduction

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    The purpose of this special anniversary issue is to assess the possible cross-fertilization between two prominent analytical frameworks: the World City Network framework, in which researchers have studied the emergence of a globalized urban system for the provision of a host of advanced corporate services: and the Global Commodity Chain framework, in which researchers have scrutinized the inter connected functions, operations and transactions through which specific commodities are produced, distributed and consumed in a globalized economy. These two approaches have developed in parallel but have rarely been brought together. This introductory essay identifies the common roots and recent history of these two frameworks, and outlines how the six articles contribute to their theoretical and empirical cross-fertilization

    Qualitative Case Studies in Operations Management: Trends, Research Outcomes, And Future Research Implications

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    Our study examines the state of qualitative case studies in operations management. Five main operations management journals are included for their impact on the field. They are in alphabetical order: Decision Sciences, International Journal of Operations and Production Management, Journal of Operations Management, Management Science, and Production and Operations Management. The qualitative case studies chosen were published between 1992 and 2007. With an increasing trend toward using more qualitative case studies, there have been meaningful and significant contributions to the field of operations management, especially in the area of theory building. However, in many of the qualitative case studies we reviewed, sufficient details in research design, data collection, and data analysis were missing. For instance, there are studies that do not offer sampling logic or a description of the analysis through which research out-comes are drawn. Further, research protocols for doing inductive case studies are much better developed compared to the research protocols for doing deductive case studies. Consequently, there is a lack of consistency in the way the case method has been applied. As qualitative researchers, we offer suggestions on how we can improve on what we have done and elevate the level of rigor and consistency

    Symposium introduction - ethics and sustainable agri-food governance: appraisal and new directions

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    © Springer Nature B.V. 2019This Symposium contributes to a theoretical and methodological discussion on the role of ethics and responsibility in the governance of agri-food systems, as drivers for transitions towards sustainability. The papers in the Symposium are the outcomes of a collective reflection that was initiated at the European Society for Rural Sociology (ESRS) 2017 congress, within the Working Group on Ethics and sustainable agri-food governance. The session examined how ethics and ethical values drive change in the agri-food system, and how they increasingly evolve and influence food system governance. Building on the outcomes of the ESRS Working Group, the collection of papers in this Symposium fosters and deepens the discussion on the role of ethics in food systems, ranging across different food system actors, activities and contexts and presents new theoretical and methodological frameworks to understand the construction of more ethical agri-food systems.Peer reviewedFinal Accepted Versio

    Development of a collaborative supply chain model

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    This conference paper discusses the development of a collaborative supply chain model. It was presented at the 17th international conference of the European operations management association in 2010

    The vicinal difluoro motif : the synthesis and conformation of erythro- and threo-diastereoisomers of 1,2-difluorodiphenylethanes, 2,3-difluorosuccinic acids and their derivatives

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    Background: It is well established that vicinal fluorines (RCHF-CHFR) prefer to adopt a gauche rather than an anti conformation when placed along aliphatic chains. This has been particularly recognised for 1,2-difluoroethane and extends to 2,3-difluorobutane and longer alkyl chains. It follows in these latter cases that if erythro and threo vicinal difluorinated stereoisomers are compared, they will adopt different overall conformations if the fluorines prefer to be gauche in each case. This concept is explored in this paper with erythro- and threo- diastereoisomers of 2,3-difluorosuccinates. Results: A synthetic route to 2,3-difluorosuccinates has been developed through erythro- and threo- 1,2-difluoro-1,2-diphenylethane which involved the oxidation of the aryl rings to generate the corresponding 2,3- difluorosuccinic acids. Ester and amide derivatives of the erythro- and threo- 2,3-difluorosuccinic acids were then prepared. The solid and solution state conformation of these compounds was assessed by X-ray crystallography and NMR. Ab initio calculations were also carried out to model the conformation of erythro- and threo- 1,2-difluoro-1,2-diphenylethane as these differed from the 2,3-difluorosuccinates. Conclusion: In general the overall chain conformations of the 2,3-difluorosuccinates diastereoisomers were found to be influenced by the fluorine gauche effect. The study highlights the prospects of utilising the vicinal difluorine motif (RCHF-CHFR) as a tool for influencing the conformation of performance organic molecules and particularly tuning conformation by selecting specific diastereoisomers (erythro or threo).Publisher PDFPeer reviewe

    Regional symposium on research into smallholder pig health, production and pork safety: Workshop report

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