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This paper presents some statistical tests that can be used to test hypotheses of interest for implementing new technologies and improving the efficiency, functionality and business performance of business systems or companies. DEA is a non-parametric technique based on linear programming for measuring the efficiency of decision-making units (DMU) with heterogeneous inputs/outputs. Generally speaking, DEA has a possible large number of inputs and outputs, and the essential problem is that it is often not clear which inputs and which outputs should be chosen when applied to a real problem, that is, when evaluating the efficiency of the system. In tests, the deviation from the DEA borderline can be viewed as a stochastic variable. The DEA estimate is certainly biased in finite samples (debatable statistics), while the expected value of the DEA efficiency is almost certainly the true value of the parameter in large samples (complete statistics). The application of a flexible DEA structure is significant, if there are situations where insufficient information can prevent the use of parametric statistical tests in the processes and outcomes of management and production. The possibility of using DEA analysis in researching the efficiency of constituent units (branches; decision-making unit - DMU) of business systems should be taken into account in research concerning the functionality of business systems and their optimization in terms of productivity, efficiency and functionality. The research results in this paper are presented in tabular and graphical form.

In the start, an aproach of the situation regarding the objectification of innovation is given (from the level of invention and patents), through design to commercialization of new products (development and manufacturing) in accordance with advanced research and correct implementation of technological innovations. It shows the aspects of the integral system of industrial and municipal waste (there are biomass after the landscaping, green areas and parks), in the process of industrial production and processes which comprise the municipal utilities with waste treatments. Some of crucial elements of environmental policy and environmental objectives are emphasised. An algorithm of the activities of the work process regarding the management of solid waste-valuable raw material is given. It was pointed out that waste management is carried out, according to the requirements of legislation and the specifics of functioning of public enterprises and companies (including SMEs). Outputs are related to the development and implementation of systems for the treatment of solid waste (wood, biomass, industrial solid waste).

Effective manufacturing, high and stable quality products and services in continual production, only inadequate conditions of planning, systematization and realization corresponding activities in the quality assurance system (QMSQAS) of the factory (supplier, manufacturer) can be obtained. In this paper, the parameters of quality of development, design, production, and service are considered. The complex model of PMAS-CLR (preventive maintenance according to state with a controlled level of reliability), which yields guarantee to target behavior of realized products in operational conditions, is emphasized.

Effective manufacturing, high and stable quality products and services in continual production, only inadequate conditions of planning, systematization and realization corresponding activities in the quality assurance system (QMSQAS) of the factory (supplier, manufacturer) can be obtained. In this paper, the parameters of quality of development, design, production and service are considered. The complex model of PMAS-CLR (preventive maintenance according to state with a controlled level of reliability), which yields guarantee to target behavior of realized products in operational conditions, is emphasized. [ABSTRACT FROM AUTHOR]

Paper presents stress calculation in the stationary temperature domain for a hybrid structure with standard epoxy-carbon fiber composite and metallic part, showing different thermal behaviour. The thermal stress analysis is based on the finite element method. A sample problem involving such a composite plate and metallic part of structure or mould at two different temperature levels, corresponding to curing process (co-curing) and operating temperatures, respectively, is calculated and discussed. The specific properties of composite are emphasized particularly for thermal coefficients, especially if the shear coefficient is different than zero, causing completely different behaviour compared to isotropic materials. [ABSTRACT FROM AUTHOR]