Optimizacija strukture složenih informacijskih sustava

Greške u početnoj fazi projektiranja bitno poskupljuju razvoj te umanjuju učinkovitost primjene novog informacijskog sustava. Zbog toga se u ovom radu analiziraju problemi i mogućnosti optimiranja osnovne strukture lS-a, predlaže drugi pristup i izlaže jedan novi opći algoritam za praktičnu provedbu te optimizacije

A Contribution to IS General Taxonomy

The term "Information System" has been used for a great number of different products of human mind designed to enable man to understand and control the events in his surroundings. Numerous classifications of ISs have been designed so far. They are based on various forms and characteristics of the existing systems, but they do not explain their origin and growth. In this study, preceded by a brief survey of the existing classifications, a new genetic taxonomy of IS is presented. It is based on those characteristics of ISs, which are important for their development and design. It also shows how the principles of genetic taxonomy can be applied to evaluate the complexity of new IS development and thus improve the understanding between IS designers and users

Strategic Planning of Information Systems (SPIS) - A Survey of Methodology

The usage of modern information technologies will be successful only if information system development is aligned with the business system development strategy. Such an approach is usually regarded as the strategic planning of information systems (SPIS). A unified methodology for SPIS does not exist yet, although several methods, techniques and templates might be inventively integrated to develop a new IS for each particular business system. This paper presents how this integration could be performed to obtain a consistent methodology named SPIS. Such a methodology has been developed by the authors and applied to six large-scale projects in very different business environments. In this way a theoretical approachwas confirmed and extended by new experiences, which are presented in this article

Strategic Planning of Information Systems

Strategic planning of information systems (IS) has lately become an interesting subject for both the researches and practitioners dealing with IS-development and information technologies (IT) implementation in business systems. Recent researches have shown that the impact of IT on the effectiveness of business systems is less than has been expected. Therefore, information systems development and information technology implementation can not be solely the problem for system analysis and IT professionals, but also one of the most important problems for top management. The hypothesis that the efficiency of IT implementation depends on strategic planning of information system has been set in this paper. In order to improve the efficiency of the investments in IT, some new proposals and guidelines are given

Simulation Model of the Effects of Computerization on the Manufacturing Firm

A manufacturing firm is a complex and dynamic system, which efficiency is measured by system response on market demands (T) and the entire business effectiveness (E). Modern information technology (IT) should have a positive effect on these two functions, but il is difficult to determine the value and mode of that influence in advance. Regularities in form T=f1(Xj) and E=f2(Xj), describing the effects of implementation new IT in certain business areas on the efficiency of the firm as the whole, are described in this study. These regularities are established on the basis of data resulting from multifactorial experiments inform 2P-k, carried out on the simulation model of the manufacturing firm. A developed mathematical model is applicable in strategic planning of information system. The results of the research are compared with the results of empirical researches, carried out by several other authors

THE MODEL OF THE DOCUMENT MANAGEMENT SYSTEM IN THE PUBLIC SECTOR

Modern solutions regarding the use of unstructured information are based on the concept of Content Management (CM), [08] and [09]. This is a good solution for those document contents that will be generated once the CM is in place, but the question remains of what to do with hundreds of millions of documents that have been generated over the course of many years in the public sector. This article analyzes some of the features of the existing document systems in the public sector, and then discusses the needs of business processes reengineering, which are concerned with generating official decisions of relevance for both individual and business end-users. Furthermore, we propose a practically feasible model for the Document Management Systems (DMS) design, based on modern information and communication technologies that can manage and support the use of documents already in the system. In the end, this article takes a look at a general model for the calculation of costs and benefits associated with an introducton of a new DMS

THE STRATEGIC APPROACH TO ERP SYSTEM DESIGN AND IMPLEMENTATION

The use of modern information technologies (IT) will be successful only if information system (IS) development is closely connected to a business processes development strategy. Despite the fact that ERP systems are complex application packages with full functionality, they cannot be implemented immediately "from the shelf". The only way to maximise business effects, using modern IT for enterprise resources planning, is through the deliberate and extensive alignment of ERP capabilities with the business system (ES) development strategy. In this way, support for the business processes and enterprise resource planning (ERP) can be maximised. Such an approach is usually regarded as the strategic planning of the information systems (SPIS). There is no unified methodology which could be applied white performing SPIS. There are several methods, techniques and templates that should be inventively integrated to develop an optimal approach to ERP system design and to develop the implementation development of each particular manufacturing system. Thus, SPIS and ERP implementation appear as two parallel and closely connected projects, and the main outcome is a reengineered business system, supported by modern IT. This paper illustrates how this integration of SPIS and ERP can be performed in order to obtain a consistent methodology. This methodology has been proved and applied in six large-scale projects in very different business systems. In this way, the theoretical approach was confirmed and extended by the new experiences presented in this article

COMPETITIVE ADVANTAGE AND E-BUSINESS STRATEGY

Frequent changes of modern technologies combined with speed and continuous evolution of electronic business present significant problem for the enterprise. Such fast flow of changes suggests business concepts almost contradictory with strategic approach to management and information system development. The proponents of this business philosophy argue that strategic approach is not suitable in modern, fast changing, conditions. The most important attribute they give to the new enterprise is agility. This paper shows that without proper strategy in electronic business environment enterprise loses its competitive advantage. Electronic business has significant negative impact on competitive advantage. For most of the enterprises agility is not the appropriate answer because organizations are inherently slow. They can be guided only by adequate strategy. Competitive advantage must arise from complementary approach to classic and e-business concept