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Abstract : A General Approach to Panel Data Set-Theoretic Research
A General Approach to Panel Data Set-Theoretic Research Roberto Garcia-Castro and Miguel A. Ariño DOI: http://dx.doi.org/10.6000/2371-1647.2016.02.06 Published: 20 September 2016 |
Abstract: Academic research based on general linear statistical models has been rapidly moving toward a greater and richer use of longitudinal and panel data econometric methods. By contrast, set-theoretic empirical research, despite its growing diffusion, has been mainly focused on cross-sectional analysis to date. This article covers this void in panel data set-theoretic research. We provide some diagnostic tools to assess a set-theoretic consistency and coverage both cross-sectionally and across time. The suggested approach is based on the distinction between pooled, between and within consistency and coverage, which can be computed using panel data. We use KLD’s panel (1991–2005) to illustrate how the proposed approach can be applied in the context of set-theoretic longitudinal research. Keywords: Set-theoretic methods, Fuzzy sets, Longitudinal research, Panel data, Stakeholders. |
Abstract : ‘Hey You? Get Off My Cloud’: Evaluation of Cloud Service Models for Business Value within Pharma X
The Importance of Thinking Coherently in Strategic Asset Allocation Philippe J.S. De Brouwer DOI: http://dx.doi.org/10.6000/2371-1647.2016.02.04 Published: 20 July 2016 |
Abstract: Recent reports note that managers need to operate at the intersection of business and current innovative technology. Most notably, ‘Strategy is not just informed by technology but powered by it’. The opportunity to evaluate aspects of ‘cloud service models’, as critical new systems, is therefore invaluable. Our research offers a pragmatic view of the characteristics of these technologies and a useful approach for identifying which may be most suitable in relation to the generation of business value. An example is provided of cloud service requirements within a multi-national pharmaceutical company (Pharma X) which is considered as a complex organizational context of significant interest. A highly qualitative methodological approach was adopted from personal interviews with a number of senior managers involved in new technology adoption. The extent of ‘benefits’, ‘risks’, ‘when to use’ and ‘when not to use’ were determined for a variety of common cloud service models to provide a schematic of important issues for evaluation and development. The research is insightful for large private sector multinational organisations which extends an analysis beyond the usual public sector studies. We conclude with lessons learned which demonstrate the most appropriate cloud enabled business models that support senior managers engaged in cloud service processes. Keywords: Cloud services, pharmaceutical companies, models, business value. |
Abstract : The Importance of Thinking Coherently in Strategic Asset Allocation
The Importance of Thinking Coherently in Strategic Asset Allocation Philippe J.S. De Brouwer DOI: http://dx.doi.org/10.6000/2371-1647.2016.02.03 Published: 20 July 2016 |
Abstract: This paper is part one of an homage to the seminal paper of Artzner, Delbaen, Eber, and Heath (1997) [1], who proposed a set of axioms that must be satisfied by risk measures in order to be “coherent”. This paper does not aim to add to the knowledge of coherent risk measures, but it aims to prove that coherence matters not only for the mathematician, but also for the investment manager and his clients by constructing simple and transparent examples that show the dangers of working with incoherent risk measures. This way the author hopes to improve communication between the academic communities on one side and on the others side policy-makers and operational decision makers at financial institutions, their regulators and law-makers, who fifteen year after that paper still underestimate the importance of “thinking coherently”. Keywords: Portfolio Selection, Personal Financial Decision Making, Coherent Risk Measures, Strategic Asset Allocation, Suitability of Investments, Value at Risk, Expected Shortfall, Global Exposure, Risk Classification, risk and reward indicator, variance, UCITS IV, FINRA 2011. |
Abstract : Multicriteria Model for the Choice of Best Battery Provider
Multicriteria Model for the Choice of Best Battery Provider María Carmen Carnero and Ana Belén López DOI: http://dx.doi.org/10.6000/2371-1647.2016.02.02 Published: 17 March 2016 |
Abstract: The choice of suppliers is a matter of great importance in organizations. The cost, quality and delivery time provided to customers may depend to a large extent on this decision. This paper, therefore, describes a model applicable to a real organization, using multicriteria decision techniques to choose the best supplier of batteries. In order to establish concordance and discordance thresholds the values provided by the decision-maker of the company will be compared with those obtained by the fuzzy Analytic Hierarchy Process. Both valuations of the thresholds will be applied in the ELECTRE II technique. Keywords: Supplier selection, ELECTRE II, Fuzzy Analytic Hierarchy Process, Concordance thresholds, Discordance thresholds. |