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For the purposes of this article the hardness of material 42CrMo4 steel which is manufactured by metal injection molding (MIM) process was measured by Vickers method. When determining hardness the following loads: 196, 1 ; 294, 1 ; 392, 2 ; 490, 2 ; and 980, 4 N were used. The objective was to determine the unknown relationship between applied load and hardness. A numerical processing of the experimental data was performed in the software package MATLAB (v.R2012.a, The MathWorks, Inc., Natick, MA, USA). The impact of the load on the hardness was determined by regression analysis. In calculating the undetermined coefficients two mathematical models were used, Meyer’s law and a model of resistance proportional to the properties of the sample (PSR). The results show that used mathematical models very well describe the effect of the load on the measured hardness. more...

Nucleus of the strategic planning of the integrated information system (SP-IIS) is determined by implication of mutual impacts of its four principal elements: information strategy, info management strategy, info technology strategy and change management strategy, based on which the subject of research is described in the paper, viewed from the aspect of social dimension alignment of the academic (elected) and administrative (permanent) university management with the aim of drafting a simulation model of strategic planning of the integrated university information system (SP-IIS- Uni). An analysis of the research results provided evidence indicating that, with respect to the strategic planning of an integrated business information system (SP-IBIS-Uni), university top management expresses the greatest interest in the planning of alignment between the business information system (BIS) and the academic information system (AIS). They believe the impact of using ICT is crucial for their future work and operation of the university, but also necessary for more efficient integration with university institutions in EU countries. In the context of investigating this domain, the nucleus of the strategic planning of an integrated university information system is viewed as an implication of mutual impacts of information strategy, info management strategy, info technology strategy and change management strategy, but also the social implications by which the SP-IIS-Uni nucleus strategy affects the information & organizational environment of the university. Elaborated premises, hypotheses set and a comparative analysis of results from similar research resulted in a conclusion on an inseparable synergic impact of nucleus particles on the strategic planning of integrated university information system development. more...