Journal of Information and Organizational Sciences (JIOS)
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GENERIC APPROACH IN CHOICE OF ADEQUATE METHODOLOGY FOR THE ASSESSMENT OF IT INVESTMENTS
No full textInvestments into information technology (IT), (hereinafter: IT investments) havereached very high figures, which are still continually on the rise. IT potentials are being usedin an increasing number of ways. Various company managers have different approaches tothis issue. A large number of methods/models for the assessment of IT investments isavailable, so the question is posed of how to choose the adequate assessment category. Thesaid reasons have initiated a need for defining the generic approach in the choice ofadequate methodology for the assessment of IT investments, which was indeed the goal ofthis paper. General ideas to this approach stem from the fact that each IT investment has itspurpose and belongs to a certain type of IT investment (decision-making aspect) whichdemands its relevant methodology for assessing IT investments. Two groups of demands(conditions) have been defined in choosing relevant methodology. The first group pertains tomethodology analysis and determination of its compatibility with characteristics of thedefined decision-making aspect. The second group of conditions pertains to methodologyanalysis with respect to its possibilities (abilities) of integrating quantity, quality and riskfactors of IT decision. Conducted field research shows that the assessment of IT investmentshas been done mainly using simpler methods/models and their combinations, and is focusedon quantity aspects of IT values
From the Editor
No full textDear authors, readers and future authors,It is my pleasure to present you the 1st number of the 36th volume of the Journal of Information and Organizational Sciences – JIOS.In this issue a selection of 5 original scienti! c papers and 1 survey paper has been included, all of which have undergone a rigorous double-blind review process in some cases in several rounds.As in prior issues of the Journal, this one also comprises papers that cover themes from various ICT fields: computer programming, mobile technologies, symbolic logic in the field of informationsciences, business processes, formal concept analysis, data analysis, management and other related themes. We hope that the variety of themes will draw the attention of researchers in di" erent 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 http://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 reviewer for submitted papers and thus contribute signi! cantly to the rising quality of JIOS.So far JIOS has been indexed in nine 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
Portable reflection for C++ with the Mirror library
No full textReflection and reflective programming can be used for a wide range of tasks such as implementationof serialization-like operations, remote procedure calls, scripting, automated GUIgeneration,implementation of several software design patterns, etc. C++ as one of the mostprevalent programming languages however, for various reasons, lacks a standardized reflectionfacility. In this paper we present Mirror - a portable library adding reflection to C++ with acommand-line utility automating its usage. This library supports functional style static compiletimereflection and metaprogramming and also provides two different object-oriented run-timepolymorphic layers for dynamic reflection
Utilizing GPGPU in Computer Emulation
No full textThe article deals with the idea of computer emulation using the GPGPU technology in order to get performance improvements. Basic assumptions for using stream processing in computer emulation effectively are discussed and the structure of an emulator, together with the emulation technique are proposed. The emulator structure, in this case, is of distributed nature, so the communication issues are treated too. As an example demonstrating the viability of the proposal, Random Access Machine (RAM) emulator is given within the paper
From the Editor
No full textThis issue of the journal JIOS, “Journal of Information and OrganizationalSciences” presents a selection of the papers presented at the 15th InternationalConference on Information and Intelligent Systems held in Varaždin, September2004. The papers were selected after thorough review of at least two internationalreferees. The papers are arranged in alphabetic order, according the surname of thefirst author as referential
Differentiating between Student Evaluation of Teacher and Teaching Effectiveness
No full textTeachers are considered to be principal actors in the teaching process as well as one of its major constituents when quality and equity are concerned. Over the last decade a lot of papers have been published that deal with the quality of the teaching process and teachers. Most of them focus on students as the main subjects in evaluation of the teaching process and teachers. In this paper we analyze freshmen and senior students’ ability to differentiate between the evaluation of teacher and evaluation of teaching. In a lot of questionnaires used in research into this topic there is no difference in the approach to these two diverse aspects of the educational process quality. Since students are commonly the main target group of such questionnaires, in this paper we present the results of the study aimed at determining which elements, from the students’ perspective, are recognized and associated with teaching, and which ones with teachers
A UML PROFILES FOR VIEWPOINT-ORIENTED MODELING
No full textThe viewpoint-oriented modeling consists in providing an unique modelaccessible by users with various access rights according to their needs. The system isrepresented as sub-systems (called sub-models). This cutting makes the design of systemeasier by an autonomous design of its sub-systems.UML is a standard modeling language and supports extension mechanism to allowtailoring UML to fit the needs of a specific domain. UML Profile is a predefined set ofextension mechanisms. UML profile allows the stakeholders of a certain domain to expressthe semantics of their systems using a well-defined set of extensions. In this paper wepropose an initial discussion on UML profile for viewpoint oriented modeling, whichextends the standard UML by incorporating new concepts like views, viewpoints, flexible,visibility relationships, etc
From the Editor
No full textAll the papers in this issue of the JIOS Journal may fit into the Science as Usual categoryand are therefore not going to be dealt with in detail in the introduction. However, for oneof the papers included an exception has been provided, namely the paper Sigma-notationand the equivalence of P and NP classes by Miron Ivanovich Telpiz. The circumstancesleading to its publication in this issue of JIOS are presented by the editors in this preface.It is generally acknowledged that, ever since it was defined by S. Cook over thirty yearsago, P = NP has presented one of the major open problems in computing science andinformation science in general. Whereas, on one hand, this problem presents a formidablechallenge to any scientist dealing with it, its solution, especially in case it should turn out tobe a positive one considering that current technology tends to evolve in a practicaldirection and its overall functioning is conducted implicitly under the assumption of anegative solution would have a major impact on the development of informationtechnology as well as the wider context of human society as a whole. Apart from being putforward in conferences, both positive and negative “solutions” to P = NP problem can beoccasionally found in press, scientific and professional journals. The web page titled “Pversus-NP Page” (see http://www.win.tue.nl/~gwoegi/P-versus-NP.htm) provides anexcellent source for this issue. It contains links to papers stating that P = NP, as well asthose contradicting the opposite, i.e., stating that P NP. Furthermore, references are givento Oded Goldreich's rationale behind his decision not to review papers proposing solutionsto P = NP problem and related difficult problems because, in his own words, they “alsoattract the attention of non-experts, and one annoying consequence is a flood of falseclaims of resolutions of these problems” (see http://www.wisdom.weizmann.ac.il/~oded/faq.html). Dr. Goldreich a recognised figure amongmathematicians of our time – recommends other scientists to follow his example when thisissue is concerned. Nevertheless, his arguments (at least those regarding non-experts) aredefinitely not to be acknowledged in the case of the work of the Russian mathematician andlogician Miron Ivanovich Telpiz, (see http://www.tarusa.ru/~mit/ENG/eng.php for details),who has been developing his positionality theory for functions, with a special emphasis onBoolean functions, for over two decades. While doing so, he has been drawing its(primarily conceptual) analogy to positionality theory for number systems. Building on hisextensive theory, which is combinatory very complex one indeed, Dr. Telpiz states theproof of P = NP. The underlying theory itself was proposed in the first volume of his bookPositionality principle for notation and calculation the functions, originally published inRussian by the Institute of Space Researches of the Russian Academy of Science. It was dueto this book that contacts between a member of the Editorial Board and Dr. Telpiz, as wellas Dr. Andrej Fomin, his assistant and associate, were established. During those contactsthe idea evolved of Dr. Tepiz delivering an invited lecture at the IIS2004 Conference.Annual IIS Conferences have been organized by the Faculty of Organization andInformatics for years. A lecture on proving the statement P = NP was arranged.Unfortunately, Dr. Telpiz was eventually not capable of giving the lecture. Nevertheless, heproposed for his lecture to be published in form of an article in the JIOS Journal. Uponreceiving the Russian version of his article named Sigma-notation and the equivalence of Pand NP classes, the Editorial Board had it translated into English and proceeded to havingit reviewed. The paper was sent to several renowned world experts in the field of Booleanfunctions, mathematical logic and algorithm theory for review. Yet, no response wasreceived from reviewers contacted although the Editorial Board and Dr. Telpiz made effortsfor access to all relevant papers, as well as the book itself, to be possible. Bearing in mindnot only the great relevance of P = NP problem but also the constant need for scientificideas and findings to be disseminated, the JIOS Editorial Board has decided to have Dr.Telpiz's paper published although it had not been officially reviewed, which the authorhimself has consented to in writing. Owing to its inclusion in this issue, the paper is beingpresented to a wider scientific and professional audience who are thus given an opportunityto both consider and assess it from their own perspective.Editor
Documents for Visually Impaired Users in the Light of Library and Information Science
No full textThe article aims to show that the classical document paradigm in information science has the greatest potential to grasp the issues related to the providing information to persons with visual disabilities and it aims to check whether the FRBR study is usable in this area. The article is divided into two parts. In the first part, the paradigmatic turns in information science are briefly presented and there is examined their impact on the issues connected with users with visual disabilities. The second part briefly describes the structure of the bibliographic universe and there is examined how it is possible to create a model of documents for users with visual impairment and of associated processes. The model of the bibliographic universe is applied to the situation of the really existing documents for visually impaired users. Methodologically, the article is based on the information system analysis. There is used an entity-relationship approach to a model of the bibliographic universe