Journal of Information and Organizational Sciences (JIOS)
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Comparisons of Bitcoin Cryptosystem with Other Common Internet Transaction Systems by AHP Technique
No full textThis paper describes proposed methodology for evaluation of critical systems and prioritization of critical risks and assets identified in highly secured information systems. For different types of information assets or security environments it is necessary to apply different techniques and methods for their prioritization and evaluation. In this article, VECTOR matrix method for prioritization of critical assets and critical risks is explained and integrated into AHP (Analytic Hierarchy Process) technique as a set of fixed criteria for evaluation of defined alternatives. Bitcoin cryptocurrency was compared and evaluated along with other common Internet transaction systems by information security professionals according to defined VECTOR criteria. Also, the newly proposed hybrid AHP model is presented with potential case studies for future research. This article tries to discover security posture of Bitcoin cryptocurrency in the context of information security risks related to the existing most common online payment systems like e-banking, m-banking, and e-commerce
From the Editor
No full textDear readers,In this issue of the Journal of Information and Organizational Sciences you will find seven high quality papers - three original scientific papers, two preliminary communications and two survey papers.The papers have wide diapason of themes, from organization and e-commerce through e-learning to plagiarism detection and cryptography. For this reason I hope that the issue will be interesting for the readers with different interests.I would like to thank to all reviewers and their useful comments on the papers as well as to the dear colleagues from the editorial board that are responsible for the final look of the papers and the journalin whole. Special thanks, of course, goes to the authors without whose papers this journal would not be possible.I hope that in this issue you will be able to find papers that meet your interests and that are useful for your scientific work
Comparison of DPSK and RZ-DPSK Modulations in Optical Channel with Speed of 10 Gbps
No full textThis article is devoted to the problematic of error rate and modulations in optical communication. Optic waveguide shows insufficiencies in high speed transfers manifested by corrupted transfer. Although modern technological processes contributed to lowering these insufficiencies, it would be uneconomical to completely reconstruct the optical network infrastructure. The solution is only partial so we approach more economical methods, such as modulations. The article works with a 10 Gbps channel with two modulation types, namely DPSK (Differential Phase Shift Keyed) and RZ-DPSK (Return to Zero-Differential Phase Shift Keyed). These modulations are evaluated and compared according to BER (Bit Error Rate) and Q-factor
A Guidance Based Approach for Enhancing the e-Government Interoperability
No full textDeveloping e-Government interoperability in the government context is a complex task. As interoperability in government context is associated and hindered by many challenges and barriers connected to government nature of complexity. Interoperability is generally defined as the ability for two (or more) systems to exchange information and to use the information that has been exchanged. In this paper, we focus on computing systems interoperability across government ministries to achieve interoperable e-Government IT based solutions. In order to achieve e-Government interoperability in an organised and efficient way, this paper establishes a guidance-based approach for enhancing the e-Government Interoperability. This contribution is motivated by the limitations of the traditional software engineering methodologies in terms of analysis, design and development frameworks to a point that they can hardly cope with the growing issues of e-Government services interoperability
Prestige and Collaboration Among Researchers in the Field of Education and Career Development of ICT Graduates: Is There a Cross-Fertilization of Research and Knowledge?
No full textThis paper analyzes state of the art of the research regarding the education and career development of ICT graduates based on a comprehensive literature review. Analysis presented in this paper includes 155 papers in two research areas – one related to the education of ICT graduates (101 papers) and the other to their career development (54 papers). The most prestigious papers, most influential journals and groupings of authors in the abovementioned fields are identified by using the citation analysis and Social Network Analysis (SNA). Results show that the most influential papers related to ICT career are research papers dealing with ICT job skills requirements, and related to ICT education are ICT association’s related reports and recommendations on curriculum development. In general, results show that there is a lack of cross-fertilization of knowledge in both areas which means that the mixing of ideas that can lead to better research results is missing
On Simulation of the Young Measures – Comparison of Random-Number Generators
No full text"Young measure" is an abstract notion from mathematical measure theory. Originally, the notion appeared in the context of some variational problems related to the analysis of sequences of “fast” oscillating of functions. From the formal point of view the Young measure may be treated as a continuous linear functional defined on the space of Carathéodory integrands satisfying certain regularity conditions. Calculating an explicit form of specific Young measure is a very important task. However, from a strictly mathematical standpoint it is a very difficult problem not solved as yet in general. Even more difficult would be the problem of calculating Lebasque’s integrals with respect to such measures. Based on known formal results it can be done only in the most simple cases. On the other hand in many real-world applications it would be enough to learn only some of the most important probabilistic characteristics of the Young distribution or learn only approximate values of the appropriate integrals. In such a case a possible solution is to adopt Monte Carlo techniques. In the presentation we propose three different algorithms designed for simulating random variables distributed according to the Young measures associated with piecewise functions. Next with the help of computer simulations we compare their statistical performance via some benchmarking problems. In this study we focus on the accurateness of the distribution of the generated sample
A Study on Recommendation Systems in Location Based Social Networking
No full textSmart devices in the hands of people are revolutionizing the social lifestyle of one's self. Everyone across the world are using smart devices linked to their social networking activities one such activity is to share location data by uploading the tagged media content like photos, videos. The data is of surroundings, events attended/attending and travel experiences. Users share their experiences at a given location through localization techniques. Using such data from social networks an attempt is made to analyse tagged media content to acquire information on user context, individual’s interests, tastes, behaviours and derive meaningful relationships amongst them are referred to as Location Based Social Networks (LBSNs). The resulting information can be used to market a product and to improve business, as well recommend a travel and plan an itinerary. This paper presents a comprehensive survey of recommended systems for LBSNs covering the concepts of LBSNs, terminologies of LBSN and various recommendation systems.
Detecting Source Code Plagiarism on .NET Programming Languages using Low-level Representation and Adaptive Local Alignment
No full textEven though there are various source code plagiarism detection approaches, only a few works which are focused on low-level representation for deducting similarity. Most of them are only focused on lexical token sequence extracted from source code. In our point of view, low-level representation is more beneficial than lexical token since its form is more compact than the source code itself. It only considers semantic-preserving instructions and ignores many source code delimiter tokens. This paper proposes a source code plagiarism detection which rely on low-level representation. For a case study, we focus our work on .NET programming languages with Common Intermediate Language as its low-level representation. In addition, we also incorporate Adaptive Local Alignment for detecting similarity. According to Lim et al, this algorithm outperforms code similarity state-of-the-art algorithm (i.e. Greedy String Tiling) in term of effectiveness. According to our evaluation which involves various plagiarism attacks, our approach is more effective and efficient when compared with standard lexical-token approach
Utilization of Discrete Event Simulation in Business Processes Management Projects: a Literature Review
No full textDiscrete event simulation (DES) software is often used in business process management (BPM) projects, in order to support modeling, change and automatization of process modeling. However, the current research lacks systematic overview of the benefits and pitfalls of using DES software for BPM. The goal of this paper is to provide a systematic analysis of research paper related to the operations research, computer science, business and management that report the usage of DES in BPM projects, in order to shed some light in this area. Results of this analysis could be useful to academics and business practitioners in their projects
Information Technology in Small Medium Enterprise: Logistic and Production Processes
No full textThis paper presents and discuss a survey which describes how small-mediumenterprises (SMEs) implement and use their information system with respect to theirlogistic and production processes.The study first describes the rationale of the research, then it identifies thecharacteristics of the companies and detects their general attitude towards informationtechnology (IT). In the following section the paper presents a set of detailed processesto verify the structure and workflow of companies and how IT supports theirprocesses. In the last part we study the influence of some company characteristics toeffective use of processes and to different technological approaches, to supportdefined logistic and production processes.The novelty of the study and its interest, both in academic and institutional context asin the real world, resides in the opportunity to verify and understand the differentattitudes of SMEs towards information technology in defining, organizing, planningand control their processes