Journal of Information and Organizational Sciences (JIOS)
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Source Code Generator Based on Dynamic Frames
No full textThis paper presents the model of source code generator based on dynamic frames. The model is named as the SCT model because if its three basic components: Specification (S), which describes the application characteristics, Configuration (C), which describes the rules for building applications, and Templates (T), which refer to application building blocks. The process of code generation dynamically creates XML frames containing all building elements (S, C ant T) until final code is produced. This approach is compared to existing XVCL frames based model for source code generating. The SCT model is described by both XML syntax and the appropriate graphical elements. The SCT model is aimed to build complete applications, not just skeletons. The main advantages of the presented model are its textual and graphic description, a fully configurable generator, and the reduced overhead of the generated source code. The presented SCT model is shown on development of web application example in order to demonstrate its features and justify our design choices
Social network analysis of study environment
No full textStudent working environment influences student learning and achievement level. In this respect social aspects of students’ formal and non-formal learning play special role in learning environment. The main research problem of this paper is to find out if students' academic performance influences their position in different students' social networks. Further, there is a need to identify other predictors of this position. In the process of problem solving we use the Social Network Analysis (SNA) that is based on the data we collected from the students at the Faculty of Organization and Informatics, University of Zagreb. There are two data samples: in the basic sample N=27 and in the extended sample N=52. We collected data on social-demographic position, academic performance, learning and motivation styles, student status (full-time/part-time), attitudes towards individual and teamwork as well as informal cooperation. Afterwards five different networks (exchange of learning materials, teamwork, informal communication, basic and aggregated social network) were constructed. These networks were analyzed with different metrics and the most important were betweenness, closeness and degree centrality. The main result is, firstly, that the position in a social network cannot be forecast only by academic success and, secondly, that part-time students tend to form separate groups that are poorly connected with full-time students. In general, position of a student in social networks in study environment can influence student learning as well as her/his future employability and therefore it is worthwhile to be investigated
From the Editor
No full textDear authors, readers and future authors,It is my pleasure to present you the 1st number of the 34th volume of the Journal of Information and Organizational Sciences – JIOS.In this issue a selection of 11 original scientific papers and 2 preliminary communications has been included, all of which have undergone a rigourous double-blind review process. Some of the papers published here were already presented at the CECIIS 2009 Conference held in Varaždin between 23rd and 25th September 2009. These papers were nominated for publishing in JIOS by the chairs of the conference tracks they were presented at on the account of their research quality.As in prior issues of the Journal, this one also comprises papers that cover themes from various ICT fields: semantic web, social networks analysis, LMS interoperability, effective learning environment, game theory, model driven architecture, and other topics in the field of applied information sciences. We hope that the variety of themes will draw the attention of researchers in different ICT fields and motivate potential authors to expand the Journal’s thematic scope by other themes that may be of interest to the wider ICT research community.I would like to use this opportunity to encourage prospective authors among you, dear readers, to submit papers at jios.foi.hr. You are also invited to share with us your comments or critical remarks regarding the papers previously published in the Journal. Further, we would appreciate your willingness to become a peer-reviewer for submitted papers and thus contribute significantly to the rising quality of JIOS.So far JIOS has been indexed in seven well known databases. We are continuously investing a lot of effort to extend the list of databases where JIOS would be cited, in order to make the published papers available to a larger readers’ audience, and give your research a greater impact factor
Model-Driven Analysis towards Interoperability of Assessments in LMS
No full textIn this article we are focusing on interoperability of two aspects of LMS systems - test question types and assessments as such. The proposed strategy is based on MDA, especially on the Platform Independent Models (PIM). On the higher level of abstraction (PIM) it is possible to find commonalities and differences of architectures of various systems and these are the basis for the common generalized model of the assessments. In the three steps methodology we are adding specificities of PIM models of candidate systems with various architecture – Moodle, Olat and Claroline. The correctness of the final common model (General PIM) is proved in the implemented system for exchange of tests between the existing systems
Describing Layered Communication Architecture in SDL Markup Language
No full textUsing Specification and Description Language (SDL) as a formal language for specification of requirements for the complex, real-time and distributed systems involving many concurrent activities, we have come to the idea of making the language independent of platforms and operating systems which may use it. Shortly, we have developed markup version of the SDL language, and named it SDL Markup Language. It is an XML-based version of the SDL-PR (Phrase Representation), an SDL textual notation. We use the language to specify the complex communications protocols, which are used in wide range of layered architectures. We provide the specification from the INRES protocol in SDL-ML
Analytical method of CIM to PIM transformation in Model Driven Architecture (MDA)
No full textInformation system’s models on higher level of abstraction have become a daily routine in many software companies. The concept of Model Driven Architecture (MDA) published by standardization body OMG1 since 2001 has become a concept for creation of software applications and information systems. MDA specifies four levels of abstraction: top three levels are created as graphical models and the last one as implementation code model. Many research works of MDA are focusing on the lower levels and transformations between each other. The top level of abstraction, called Computation Independent Model (CIM) and its transformation to the lower level called Platform Independent Model (PIM) is not so extensive research topic. Considering to a great importance and usability of this level in practice of IS2Keywords: transformation, MDA, CIM, PIM, UML, DFD. development now our research activity is focused to this highest level of abstraction – CIM and its possible transformation to the lower PIM level. In this article we are presenting a possible solution of CIM modeling and its analytic method of transformation to PIM
Social network analysis of Eureka project partnership in Central and South-Eastern European regions
No full textIn this article we present research on the social network structure of project partnership in the Eureka network in order to understand country performance in the network. The main method used in our research is the Social Network Analysis (SNA). Research questions were set and examined on the set of the Central and South-Eastern European countries. We investigated regionally based partnerships, relation between central position in the network and country’s level of development and, finally, in order to analyze relation between number of project partners and project success, Eureka success stories were investigated as well
Automatically Generated Keywords: A Comparison to Author-Generated Keywords in the Sciences
No full textThis paper examines the differences between author-generated keywords and automatically generated keywords in one area of scientific and technical literature. Using inverse frequency, keywords produced using both methods are examined using a maximum likelihood algorithm. By reducing the scope and size of the corpus of literature examined, this study more closely emulates the information gathering processes of scientists and technologists. Care was taken in developing the sample used, balancing statistical factors to allow interpretable outcomes and replication. The results of the study indicated there are no statistically significant differences between the two techniques
An Approach to Optical Network Design using General Heuristic Optimization Framework
No full textThe article tackles the problem of optimization methods in optical network design process, based on optimal traffic routing with the goal to minimize the utilized network resources for given topology and traffic demands. An optimization framework Nyx has been developed with the focus on flexibility in solving optimization problems by implementing general heuristic search techniques. Nyx modular organization has been described, including coding types for solutions and genetic algorithm as the optimization method. Optimal routing has been implemented to demonstrate the use of Nyx in the optical network design process. Optimal routing procedure has been applied to Pan-European optical network with variations of routing procedures and the number of wavelengths. The analysis included no protection scenario, 1+1 protection and path restoration. The routing was performed using shortest path routing and optimal routing which minimizes the use of optical network resources, being network multiplexers, amplifiers and fibers.
Online privacy: overview and preliminary research
No full textOver the last decade using the Internet for online shopping, information browsing and searching as well as for online communication has become part of everyday life. Although the Internet technology has a lot of benefits for users, one of the most important disadvantages is related to the increasing capacity for users’ online activity surveillance. However, the users are increasingly becoming aware of online surveillance methods, which results in their increased concern for privacy protection. Numerous factors influence the way in which individuals perceive the level of privacy protection when they are online. This article provides a review of factors that influence the privacy perception of Internet users. Previous online privacy research related to e-business was predominantly focused on the dimension of information privacy and concerned with the way users’ personal information is collected, saved and used by an online company. This article’s main aim is to provide an overview of numerous Internet users’ privacy perception elements across various privacy dimensions as well as their potential categorization. In addition, considering that e-banking and online shopping are one of the most widely used e-services, an examination of online privacy perception of e-banking/online shopping users was performed.