Journal of Information and Organizational Sciences (JIOS)
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Comparison of Cloud backup performance and costs in Oracle database
No full textCurrent practice of backing up data is based on using backup tapes and remote locations for storing data. Nowadays, with the advent of cloud computing a new concept of database backup emerges. The paper presents the possibility of making backup copies of data in the cloud. We are mainly focused on performance and economic issues of making backups in the cloud in comparison to traditional backups. We tested the performance and overall costs of making backup copies of data in Oracle database using Amazon S3 and EC2 cloud services. The costs estimation was performed on the basis of the prices published on Amazon S3 and Amazon EC2 sites
Service-oriented architectural framework for support and automation of collaboration tasks
No full textDue to more and more demanding requirements for business flexibility and agility, automation of end-to-end industrial processes has become an important topic. Systems supporting business process execution need to enable automated tasks execution as well as integrate human performed tasks (human tasks) into a business process. In this paper, we focus on collaboration tasks, which are an important type of composite human tasks. We propose a service-oriented architectural framework describing a service responsible for human task execution (Human task service), which not only implements collaboration tasks but also improves their execution by automated and semi-automated decision making and collaboration based on ontologies and agent technology. The approach is very generic and can be used for any type of business processes. A case study was performed for a human task intensive business process from an electric power transmission domain
The position of teaching materials on the monitor and its effect on the e-learning success
No full textThere are various elements in designing e-teaching materials that could have an impact in raising the efficiency of e-learning. This paper is based on the experiments aiming to investigate whether there are certain positions on the monitor in which students are able to better perceive and/or remember e-teaching materials. Our research was carried out at the Juraj Dobrila University of Pula. Participants were first year students attending the teacher education programme (aged 19.5 – 20.5). The research design included two pre-experimental groups and one experimental group. The monitor was virtually divided into 24 zones. Students read the teaching material displayed on the screen; in each reading four texts in different positions were used. The relative ease/difficulty of remembering the text was taken into account by introducing different ponders to each text. Regarding the memory efficiency, our results show statistically significant differences between certain screen positions (these differences ranged from +29.6% to -42.6% from the average result). Keywords: efficient e-learning, text position on the scree
From the Editor
No full textDear authors, readers and future authors,It is my pleasure to present you the 1st number of the 35th volume of the Journal of Information and Organizational Sciences – JIOS.In this issue a selection of 6 original scientific papers, 2 preliminary communications and 2 survey papers have been included, all of which have undergone a rigorous double-blind review process.Some of the papers published here were already presented at the CECIIS 2010 Conference held in Varaždin between 22nd and 24th September 2010. 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: databases, programming, IT supported learning, 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-reviewed for submitted papers and thus contribute significantly to the rising quality of JIOS.So far JIOS has been indexed in seven well known databases and now this number has risen to nine, adding “SCOPUS” and “Library, Information Science & Technology Abstracts” to the database list. 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
Proposing methodology pattern for measuring public value of IT projects
No full textThe assessment of the acceptability and the value of IT projects in the public sector, especially when the projects feature the qualitative value along with the monetary one, is a complex problem. There are certain methodologies in the world though that help various organizations in decision-making process when projects are being chosen. The paper surveys the three IT projects public value assessing methodologies: the American Value Measuring Methodology, the French MAREVA, and the German WiBe. A comparison of the approaches to solving the problem of assessing public value of IT projects was thus made. The Analytic Hierarchy Process – a method of a multicriteria analysis of alternatives-was briefly presented. By the use of the Hierarchy Criteria Model in the way that respects all the basic characteristics that a methodology of the kind should feature in accordance with Gartner, a proposition of an IT project public value measurement methodology pattern was presented. The selection of projects with little value contribution if compared to the existing situation, the assessment of the acceptability of risk through the hierarchy structure of the value of a project and the aggregation of the value of separate PVIT dimensions is a contribution related to the methodology patterns that were surveyed
Unlearning/Relearning in Processesof Business Information Systems Innovation
No full textUnlearning is defined as throwing away concepts learnt in the past to give space for possible new learning. The learning process that supports deep change should be composed by different unlearning-learning phases, both at the individual level and at a more general organizational level. Must unlearning and relearning concepts be explicitly considered in business process reengineering based on the reorganization of information systems? This paper tries to answer this question, by describing the impact of change in information systems on the knowledge model of an organization. The analysis of a recent case study of information systems innovation, permit us to highlight common deficiencies in the design of information systems reengineering processes, particularly in SME. The paper ends with the suggestion of “good practices” that could permit the success of innovation processes by reducing the risk of failure due to excessive resistance to change
The rôle of linear logic in coalgebraical approach of computing
No full textLinear logic provides a logical perspective on computational issues such as control of resources and order of evaluation. The most important feature of linear logic is that formulae areconsidered as actions. While classical logic treats the sentences that are always true or false, in linear logic it depends on an internal state of a dynamic system. Curry-Howard correspondence is a correspondence between logic and computing in informatics. In this contribution we present two ways of computations which correctness we prove by Curry-Howard correspondence. We show a standard way and a new way of computing based on hylomorphism by using coalgebras which is an alternative method. Our method of recursive and corecursive computations we apply in simple authentication system
Ontology-based knowledge management in service-oriented systems
No full textThis paper proposes an innovative framework for knowledge management in service-oriented systems. An important novelty of our framework is that it allows for automatic instance level evolution of the knowledge base and that it integrates conceptual level knowledge base evolution with the overall service-oriented system framework. In the paper, we identify several opportunities that have arisen in the field of knowledge management with the wider acceptance of SOA and its technology stack, and we present a framework that addresses these opportunities. We focus on ontology-based knowledge management systems, which have become one of the most important technologies for implementation of knowledge management systems. The framework reduces the required input for knowledge management by knowledge engineers, increases information completeness in the knowledge base and provides a simple way for storing more up-to-date information in the knowledge base
From the Editor
No full textDear authors, readers and future authors,It is my pleasure to present you the 2nd number of the 35th volume of the Journal of Information andOrganizational Sciences – JIOS.In this issue a selection of 3 original scientific papers and 1 survey paper have been included, all of which have undergone a rigorous double-blind review process. Some of the papers published here were already presented at the CECIIS 2011 Conference held in Varaždin between 21st and 23rdSeptember 2011. 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: computer programming, symbolic logic in the field of information sciences, business processes, management and other related themes. We hope that the variety of themes will draw the attentionof 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 yourwillingness to become a peer-reviewed for submitted papers and thus contribute significantly to the rising quality of JIOS.So far JIOS has been indexed in eight well known databases and now this number has risen to nine, adding “Library, Information Science & Technology Abstracts” to the database list. We are continuously investing a lot of effort to extend the list of databases where JIOS would be cited, in order to makethe published papers available to a larger readers’ audience, and give your research a greater impact factor