Decision making trial and evaluation laboratory (DEMATEL) is considered as an effective method for the identification of cause-effect chain components of a complex system. It deals with evaluating interdependent relationships among factors and finding the critical ones through a visual structural model. Over the recent decade, a large number of studies have been done on the application of DEMATEL and many different variants have been put forward in the literature. The objective of this study is to review systematically the methodologies and applications of the DEMATEL technique. We reviewed a total of 346 papers published from 2006 to 2016 in the international journals. According to the approaches used, these publications are grouped into five categories: classical DEMATEL, fuzzy DEMATEL, grey DEMATEL, analytical network process- (ANP-) DEMATEL, and other DEMATEL. All papers with respect to each category are summarized and analyzed, pointing out their implementing procedures, real applications, and crucial findings. This systematic and comprehensive review holds valuable insights for researchers and practitioners into using the DEMATEL in terms of indicating current research trends and potential directions for further research.

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DEMATEL Technique: A Systematic Review of the State-of-the-Art Literature on Methodologies and Applications

Does Aid Change North Korea's Foreign Policy? An Empirical Analysis Using the United Nations General Assembly Voting Data

This paper investigates whether firms' innovation strategies affect their patenting behavior, as measured by both the probability of having a patent portfolio and the number of active patents held. Three main dimensions of an innovation strategy are taken into account: the relative importance of basic research, applied research and development work in total RD (2) there is a positive relationship between the patent portfolio of firms and an outward-oriented innovation strategy characterized by RD (3) process-oriented innovators patent less than product-oriented innovators; (4) a stronger focus on basic and applied research is associated with a more active patenting behavior; (5) firms that perceive high barriers to innovation (internal, risk-related or external barriers) have smaller patent portfolios; (6) the perceived limitations of the patent system do not significantly influence the patenting behavior, suggesting that firms patent for other strategic reasons than merely protecting innovation rents.

Innovation strategy and the patenting behavior of firms

A major stream of research within the field of information systems security examines the use of organizational policies that specify how users of information and technology resources should behave ...

Organizational information security policies: a review and research framework

Contemporary organizations operate in highly interconnected environments where they are frequently confronted by the challenge of balancing the protection of information resources with the need for...

Information Security Control Theory: Achieving a Sustainable Reconciliation Between Sharing and Protecting the Privacy of Information

Purpose – The information security policy document of an organization needs to be translated into controls and procedures at the implementation level. The technical and business personnel in‐charge of implementing the controls and procedures need to consider a large number of security‐related statements from a heterogeneous pool of security documentation and decide on the implementation plan. The purpose of this paper is to propose an approach to analyze a set of security statements to establish an implicit hierarchy and relative importance among them.Design/methodology/approach – A set of statements relevant to e‐mail service security is chosen from the classified documentation of an IT firm. The authors contacted the technical person who was the owner of this service to obtain a one‐on‐one comparison between the policies. These policies and their inter‐relationships are represented as a graph. Centrality measures based on the in and out degrees of a node are used to calculate the relative importance of ...

Identifying linkages between statements in information security policy, procedures and controls

Social networking websites have become an integral part of the day to day lives of people. People turn to social media for interacting with other people, sharing ideas, gaining knowledge, for entertainment and staying informed about the events happening in the rest of the world. Among these sites, YouTube has emerged as the most popular website for sharing and viewing video content. This popularity of YouTube has also attracted spammers, who upload videos with the sole purpose of polluting the system content and causing dissatisfaction among other viewers. These spam videos may be unrelated to their title or may contain pornographic content. Therefore, it is very important to find a way to detect these videos and report them before they are viewed by innocent users. In this paper, we propose a Markov Decision Process approach to model the problem of YouTube video spam detection. We analyze the accuracy of the policy returned by the model and compare it with the accuracy of other data mining algorithms that have been proposed for video spam detection. We find that the proposed model gives a superior performance than the other models.

A Novel Approach for Youtube Video Spam Detection using Markov Decision Process

Multi-Factor Authentication is used as a foolproof solution to various issues involved in present day critical authentication systems. However, it comes with the overhead of employing multiple authentication programs to complete the process. Moreover, current multi-factor authentication schemes require all intermediate One Time Passwords(OTPs) to be stored for the lifetime of the authentication process. They also involve security risks whenever an authentication process requires the user's password at a public place like a Point-of-Sale terminal or an open ATM booth. This work proposes a more secure, efficient, convenient and flexible multi-factor authentication technique using threshold cryptography.

Multi-factor authentication using threshold cryptography

The Internet of Medical Things (IoMT) is set to create a revolutionary shift in healthcare by transforming traditional methods of disease diagnosis to a data-centered, technology-driven analysis. However, data security and privacy issues are significant hurdles that need to be addressed. Blockchain technology has radically transformed data storage mechanisms using decentralization and cryptographic principles, making it a better choice for sensitive medical data than cloud storage services. A majority of the existing research focus on implementing blockchain in IoT devices which have much higher processing capabilities than IoMT devices such as pacemakers. Most of the existing blockchain frameworks are unsuitable for miniature IoMT devices due to high computational and storage requirements. This work aims to overcome this challenge by proposing a private blockchain framework in which different stakeholders of a medical system such as patients, doctors, IoMT devices, etc. act as nodes, creating a decentralized network in which physiological data output by IoMT devices can be stored securely and tamper-free forever. The proposed design is implemented in a Raspberry Pi network, using Proof of Authority (PoA) consensus mechanism which has minimal computational requirements. Data confidentiality is ensured using a double-encryption mechanism by means of Elliptic Curve Integrated Encryption Scheme. It is observed to perform well in comparison with existing approaches with a transaction speed of a minimum of 25 transactions per second and is easily scalable to accommodate different personnel of the healthcare sector. Further development on this design could potentially result in a major innovation in the IoMT industry in the form of a new array of real-time health monitoring devices with high security and data privacy.

A private Ethereum blockchain implementation for secure data handling in Internet of Medical Things

Patent quality (PQ) is a critical and complex factor of a firm’s patent strategy. We posit that the existing PQ models and their methodological approaches are limited in their ability to ad...

Vinod Pathari

Papers

Identifying linkages between statements in information security policy, procedures and controls

A Novel Approach for Youtube Video Spam Detection using Markov Decision Process

Multi-factor authentication using threshold cryptography

A private Ethereum blockchain implementation for secure data handling in Internet of Medical Things

A model for measuring and ranking a firm’s patent portfolio