Introduction/background: The aim of the article is to check whether the holistic approach in the case of high-tech industries is the optimal solution in the field of M&A process analysis. Aim of the paper: Two research hypotheses were formulated: H1 – It is impossible to create an effective universal holistic model for even a single high-tech industry. H2 – The key element of the process of assessing the validity of M&A processes is the potential use value of the acquired knowledge and/or technology. Materials and methods: A quantitative analysis of articles relating to holistic models and sources relating to the specificity of specific market M&A processes were used. Results and conclusions: The results obtained revealed that the analysis of selected mergers and acquisitions allowed it to be stated that the key aspect determining the success or failure of the M&A process is the value of the acquired knowledge and technology and its applicability within the newly created organisational structures. It was also found that holistic models, apart from being cost-intensive and time-consuming, are also characterised by a lack of standardisation of the model and the lack of assessment at both the level of one industry and within a single branch of the economy. Thus, the creation and application of universal holistic models in high-tech industries may turn out to be ineffective and lead to decision errors at the level of the company's development strategy.
The paper presents the idea and need for the holistic modelling of machine tools. The complexity of such modelling is illustrated for a 5-axis machining centre. The need to model errors in the controllable axes of machine tools with rotational and linear motion drives is indicated. The physical dependences having a bearing on the state of deformations produced by temperature and dynamic forces, as well as the assumptions and computational modelsof shift generation in the high-speed bearing sets of spindles, and models of the behaviour of the ball screw are presented. Moreover, the results of experimental studies of the thermal behaviour of linear motor sets and guideways with rolling blocks are reported.
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The analytical model of the mechanical system described allows building the spatial model of the dynamic load power distribution in the multi-input-multi-output system. The model allows determining the dissipation power distribution in the individual subsystems and transmitted powers from every subsystem, where the external excitation force has been applied, onto remaining subsystems. The most important is the possibility of determination of dissipated powers in every subsystem. It becomes the basis for construction of holistic models of dynamic loads and in consequence of diagnostic models of machines.
PL
Artykuł zawiera opis holistycznego modelu rozpływu mocy obciążeń w systemach mechanicznych, który uwzględnia ewolucyjny proces destrukcji elementów systemu. Z pomocą modelu rozpływu mocy obciążeń można badać obiekty w pięciowymiarowej czasoprzestrzeni, charakteryzowanej jako przestrzeń procesów fizycznych, w której oprócz trzech składowych przestrzennych każdego punktu w modelu dyskretnym systemu występuje czas dynamiczny procesów drganiowych oraz czas ewolucji stanu dynamicznego systemu (czas ewolucji). Ewolucyjny proces destrukcji technicznej obiektu w funkcji czasu eksploatacji odzwierciedla się poprzez wzrost odpowiednich elementów macierzy rozpływu mocy (pulsacja mocy obciążeń).
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