Proceedings of the 25th International Conference on Information Technology Interfaces, 2003. ITI 2003.

In order to survive in highly competitive business environments, companies have to continuously change their business processes. It is apparent that developing dynamic models of business processes prior to their change could increase the success of reengineering projects. This research investigates a suitability of business process modelling tool ARIS for dynamic modelling of business processes. I... View full abstract»

We present the characteristics of business renovation efforts and readiness for electronic business (e-government) in Slovenia. It is clear that successful e-government implementation requires not only introduction of modern information technology, but also business renovation, business process reengineering and e-business strategy. The case of a business renovation project in one of the Slovene M... View full abstract»

Fed-batch fermentations for production of L-lysine and L-valine are carried out using high producing strains. Based on the experimental data, comparative studies of both processes are done, applying different mathematical procedures as follows: preliminary data processing and calculation of different specific rates; development of nonlinear models of specific growth, specific utilization and speci... View full abstract»

Open source software can create some problems related to costs and organization. We faced the issue of digital authentication in Microsoft operating systems, with reference to the certification authority open source. We have tried to solve this problem analysing the Windows requests and forcing them on the PKI configuration file. Finally, a user's interface allows the system administrator to opera... View full abstract»

Systems based on open-source technologies are proving to be an interesting and very common phenomenon in the area of modern software design. In this context we introduce our Web information system from an unorthodox viewpoint - open-source. We try to give a lucid overview how open-source paradigm can be effectively incorporated and utilised in software design. In addition, we also speak of the ben... View full abstract»

As successful organizations recognize that they need to convert their intellectual resources into customized services, the value of electronic collaboration has increased. Current efforts in managing knowledge have concentrated on producing; sharing and storing knowledge while business problems require the combined use of these intellectual resources to enable organizations to provide innovative a... View full abstract»

Skeletal injury operations are in general of high complexity and require extreme accuracy. That is why it seems practical that prior to a surgical intervention a geometric and mechanic model is prepared, which can be used to simulate various operational solutions. We present here a computerized system, which we call MedEdit, that helps the surgeon to plan the operation and with the use of a finite... View full abstract»

Natural, continuous tone images have the very important property of high correlation of adjacent pixels. This property is cleverly exploited in lossless image compression where, prior to the statistical modeling and entropy coding step, predictive coding is used as a decorrelation tool. The use of prediction for the current pixel also reduces the cost of the applied statistical model for entropy c... View full abstract»

A Web-based information system for management of scientific electronic journals is presented. Journal management requires exchange of information between many participants in the publishing process, including authors, reviewers, editors, and collectors. Each participant in the process plays a different role, and cooperates with other participants. The Web system is implemented using open source so... View full abstract»

We describe the architecture of a system called wMail, intended for e-mail messaging using wireless application protocol (WAP) enabled cell phone. The software integrates all of user's Internet mailboxes with the user's cell phone, turning them into instant messaging systems available at any time from anywhere. On the basis of a chosen time period and notification type, the user is provided either... View full abstract»

Data warehouse systems have become a basic technological infrastructure in management decision making. Nevertheless, the overall utility of data warehouses remains unmeasured in most practical cases. As a consequence of this, IT-managers do not possess appropriate means to evaluate warehouse benefits in order to decide about investments in warehousing technology. We develop a controlling instrumen... View full abstract»

Knowledge termination is the last, but mostly unperformed task in the knowledge life cycle. It is the process that describes the process of selecting and deleting unusable knowledge items. Through performing knowledge termination, organisations can avoid losing efficiency in the knowledge management practice by waiting for the search results, selecting the real useful knowledge items, or using wor... View full abstract»

IT outsourcing is a great chance for technological and economical growth of developing countries. Natural outsourcing vendors are small and medium enterprises. To obtain higher competitiveness in that sector, skilled engineers are required. Academic environment doesn't provide students with enough experience with real-life problems. We discuss the state of students' knowledge in Croatia as demonst... View full abstract»

A general method for model-based diagnosis is developed, which can handle multiple faulty modes, and will enable users to analyze the completeness of the system model, and to choose the observation subset appropriately, in order to have small diagnostic space with the right solutions in. The existent consistency-based diagnosis and abductive diagnosis are special cases of this method. The relation... View full abstract»

Our work is related to the ecological state of Lake Ohrid. Tectonic by origin, Lake Ohrid is situated in the southwestern part of the Republic of Macedonia. The size of the lake is 358 square kilometers. Its average depth is 151m and the maximum depth is 289m. "Man-made" eutrophication, in the absence of control measures, proceeds much faster than the natural phenomenon and it is the major reason ... View full abstract»

We present a construction of an educational distant level control system. We also present theoretical concepts for digital control system design and the hardware and software architecture that allow external access to the experimental platform using a simple Internet browser. The application is build as a virtual laboratory but it may be extended with some consideration to industrial process contr... View full abstract»

Evolutionary algorithms have proved to be a flexible and effective technique for addressing various instances of the timetabling problem. We describe an investigation and its result on an evolutionary approach to solving a particular class of highly constrained timetabling problems. The convergence speed of the evolution program has been significantly improved with the usage of biased operators, w... View full abstract»

Preliminary research on the vocabulary size of Croatian lexical corpora shows that the distribution of types is regular and that deviations of the calculated values are within theoretically acceptable limits. The research also brought us to conclusion that Zipf's law in Croatian language is not applicable because the lexical density is different, i.e. the proportion of types and tokens in differen... View full abstract»

Heterogeneity of computer environment allows execution of large diverse applications, but it also simultaneously aggravates mapping. We present a combined multicriterial mapping based on the MEVSP model. Model parameters originate from the level of application, platform, mapping and user. The most suitable prediction methods are long-term performance prediction, short-term prediction of threshold ... View full abstract»

Although the idea of a decision support system resourceful in querying and analysis can be traced back to the 1960s, it was not until the late 1990s that data warehousing was universally recognized and adopted. We address issues related to modelling and implementing a data warehouse for the higher education information system in Croatia. The purpose of the project is to provide a data querying ser... View full abstract»

The main focus is to present the possible consequences of ICT liberalization. Since the market is usually regulated after the liberalization, different regulating decisions and their positive and negative consequences are studied. A methodology for measuring market structure and consequently the need to regulate is also presented. This methodology is then used to compare the market structure of se... View full abstract»

Shopping centers represent a substantial slice of the UK economy and have rightly attracted considerable research. Despite interest from academics and practitioners, little research attention has been paid to the market segmentation of shoppers. Proactive marketing management is a feature of only a minority of UK shopping centers. The marketing communications of most would appear to be aimed mainl... View full abstract»

In the theory and practice of information system design, implementation and functioning very little attention is paid to the systematic analysis of causes of information system failures and information systems goal setting. A vaguely defined goal of the IS implementation will result in solutions that will satisfy the demands of information system users, information system professionals and busines... View full abstract»

Physical reality is the source of biggest abstractions, which are the base of scientific knowledge and of all the other forms in which reality is perceived. All human creations are the consequence of some interpretative and explaining systems, in the middle of which we can always find the concept of model. A model is "a key to a given problem". We give an answer to the question: "What should we un... View full abstract»

We summarize our efforts in implementing a working multilevel secure database prototype. We have chosen belief-consistent multilevel secure relational data model (BCMLS) as a basis for our prototype because of its comprehensive semantics for interpreting all stored information. While semantically superior to other models, this model has not been implemented as a working system before. Our prototyp... View full abstract»