Dincer H.,Istanbul University |
Hacioglu U.,Istanbul University |
Tatoglu E.,Bulgarian International Business School |
Delen D.,Oklahoma State University
Decision Support Systems | Year: 2016
The 2008-2009 global financial crisis and its subsequent ramifications on capital markets have led to an increasing attention on the importance of cognitive and behavioral issues in finance. The purpose of this study is to determine the ranking of the industry alternatives for portfolio investments based on individual investors' perceptions. Accordingly, a hybrid analytic multi-criteria decision model (MCDM)-based on the Fuzzy Analytic Hierarchy Process (FAHP) and the Fuzzy Technique for the Order of Preference by Similarity to Ideal Solution (FTOPSIS) methods along with sensitivity analysis-is developed to identify and rank-order the best performing industry options. The proposed model is applied to Borsa Istanbul Stock Exchange 100 Index (BIST 100) in Turkey. The results indicate that (i) the investors' perceptions on market conditions and global financial situation influence their industry selection on company stocks; (ii) the investors' perceptions on portfolio investments rely heavily on performance and risk levels of individual asset/stocks, and (iii) traded stocks of financial industry (along with its sub-industries) have greater performance expectations than those of the ones in other industries such as technology, services and tourism. © 2016 Elsevier B.V.
Liu W.,University of Jinan |
Zhang Y.,Jinan University |
Zhang Y.,University of Jinan |
Deng L.,Bulgarian International Business School |
Deng L.,University of Jinan
Advances in Information Sciences and Service Sciences | Year: 2012
The fast development of mobile terminal makes people both connected online and offline and share information simultaneously and thus affects social network structure. This article proposed the concept of dual-network including the real and virtual network, established a dual-network opinion spread model on the basis of nodes' traits, which include locations, reputations, trust value and interests of individuals, and discussed the effects of nodes' traits and network structure on the dissemination of information. Sensitivity analysis indicates that the increase of popularity of the Internet, trust value (in both real and virtual network), or dissemination speed (in both real and virtual network) will induce the marginal decrease of the time required for dissemination. But the similar effect of mean reputation of initial nodes is insignificant.
Mettler T.,SAP |
Vimarlund V.,Bulgarian International Business School |
Vimarlund V.,Linkoping University
Informatics for Health and Social Care | Year: 2011
Background.Different studies have analysed a wide range of use cases and scenarios for using IT-based services in homecare settings for elderly people. In most instances, the impact of such services has been studied using a one-dimensional approach, either focusing on the benefits for the patient or health service provider. Purpose.The objective of this contribution is to explore a model for identifying and understanding outcomes of IT-based homecare services from a multi-actor perspective. Methods.In order to better understand the state of the art in homecare informatics, we conducted a literature review. We use experiences from previous research in the area of informatics to develop the proposed model. Results.The proposed model consists of four core activities 'identify involved actors', 'understand consequences', 'clarify contingencies', 'take corrective actions', and one additional activity 'brainstorming IT use'. Conclusion.The primary goal of innovating organisations, processes and services in homecare informatics today, is to offer continued care, better decision support both to practitioners and patients, as well as effective distribution of resources. A multi-actor analysis perspective is needed to understand utility determination for the involved stakeholders. © 2011 Informa UK, Ltd.
Tsvetanova Y.,Bulgarian International Business School
Pharmacia | Year: 2014
The review highlights the main features of internal audit by focus on distribution of medicinal products. Recent data suggest internal audit as an antidote to effects of economic recession. The present review reveals internal audit as a tool for competitiveness through implementation of good practices. The purpose of the review is to describe the advantages of internal audit in new institutional frame. The object of analysis is the distribution practice, and more concrete, the wholesale distributors. The analysis was perform by factor analysis and done in response to the tendency for outsource of distribution activities and practical interest in the use of internal audit by implementation of requirements and recommendations for good practices. The results showed that the internal audit in pharmaceutical industry is determinate by two factors: regulatory requirements and complexity of supply chain. The external and the internal environment define five features of internal audit in pharmaceutical industry.
McIntosh B.,Bulgarian International Business School |
Sheppy B.,University of Richmond
British Journal of Health Care Management | Year: 2012
The article traces the history of the Poly Implant Prosthesis (PIP) scandal from an ethical perspective and explores the underpinning moral dilemmas inherent in the act of 'whistleblowing.' It goes on to consider the consequential stakeholder and broader societal reaction to whistleblowing which is discussed through deontological and teleological perspectives of ethically driven motives to act. It draws on the duty of care responsibility of healthcare professionals and the dilemma of personal consequence by the act of whistleblowing, whereby the objective of that act is the maintenance or improvement of patient standards and care. It argues that a cultural shift in organisational behaviour is urgently required to abrogate the needs for whistleblowing by means of internal systems and processes. Whistleblowing would thus become a supererogatory act of moral courage rather than carrying negative consequences in the interests of short-term saving face.