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Today, stalked company is defined as an industrial. Technologies are developed and refined, and this leads to innovation in the field of environmental protection and logistics. Environmental protection as a concept is quite lengthy and includes several areas. This article deals with the life cycle of materials technology at cutting water jet from the award of the contract to the finished product.

The paper deals with logistics risk management safety program of new and renovated machines, which as members of the management of company must deal with. There are accountable consequences of untreated risks that may stop a dangerous event. In this case, damage can be life or health of users or it can create damage to their property i.e. that may end up as damage of the machine. Contribution from own perspective is focused on: defining the basic concepts of base solution, logistics system methodology management of technical risks and logistic system analysis of the machinery.

This article deals with the determination and definition of competencies of pupils and their development in an integrated didactic work place. The article focuses on the practical teaching in the turning workshop at secondary school. The development of competencies is based on the learning objectives for the subject “Technology of Turning” in the practical teaching. The general learning objectives are further specified in sub-objectives, in which the various competencies the student should acquire and develop are defined.

Water jet technology material cutting is analyzed from the point of view of environment, namely of an impact of noise to production process working conditions. Except noise, vibrations also influence working environment but this problem in this text is not dealt with. Measuring of noise level was focused on one working shift at a production workplace of a firm WATING Presov. Two workers were chosen for this puprouse - operators who operate two cutting desks during a common working shift. In accordance of given methodics, measuring microphones were placed on the operators and on selected places of the workplace. The recorded results of measuring were evaluated and consequently steps for noise elimination during water jet cutting process were accepted.

Classification of the mineability of rocks is an integral part of the earthworks occurring in the implementation of engineering works. The existence of degrees of excavation difficulty allows us to specify the needs of mechanisms for earthworks. It is determined according to the old standard CSN 73 3050, and new standard CSN 73 6133. Both standards define the mechanical mechanisms that should be used for each degrees of excavation difficulty. Based on this rock may be the most optimal breakage and extracted without machine selection would have been undersized. That would mean its destruction and inefficient extraction of rocks, or contrary oversizing. On that basis, there would be an unreasonable overpricing earthworks. Into force has already entered a new standard but there are a number of differences in their classification. The publication deals with the evaluation degrees of excavation difficulty, and mechanical mechanisms for earthwork and differences between the two standards, respectively their similarities. It is evident that the old standard represents a very detailed division of soil and rock into seven degrees of excavation difficulty and thus represents a substantially transparent calculation of the total price of earthworks. In contrast, the new standard gives only three degrees of excavation difficulty. This represents a major simplification of the process of classification and subsequent utilization of engineering mechanisms.

Dynamic methods are adopted in numerous civil engineering sections. Especially evaluation of the earthwork quality can be speed up using these methods. The results of the parallel measurements of selected testing devices for determining the quality of soil compaction were used for comparative analysis. The correlations between values obtained from various apparatuses were derived to evaluate the usability of the devices for tested type of soil. Test field represented soft subsoil of the road embankment consisted from low plasticity clay. Correlations show that examined apparatuses are suitable for examination of compaction level of fine-grained soils with consideration of limit conditions of used equipment. Applied methods are quick and results can be obtained immediately after measurement, and the methods are thus suitable in cases when construction works have to be performed in a short period of time. Generally, both Humboldt GeoGauge™ and Clegg Impact Soil Tester can substitute the LDD test in terms of the earthworks assessment, however, limit conditions of apparatuses given by the manufacturers need to be taken into account to achieve results with a required accuracy. Mentioned methods are based on the dynamic effect of the testing equipment on the soil layer, so results have to be interpreted carefully considering the type and physical state of tested soil. © 2016 The Authors. Published by Elsevier Ltd. Peer-review under responsibility of organizing committee of the World Multidisciplinary Civil Engineering-Architecture-Urban Planning Symposium – (WMCAUS 2016)

The necessity of the universal technical education of the youth, understood as providing them with the basis for technical culture, is a consequence of a widespread and still growing importance of technology in all domains of contemporary life. In the face of modern technical culture requirements, present day education cannot be limited to acquiring manual skills. It should at the same time ensure gaining basic technical knowledge and developing technical thinking and interests [Depesova 2011: 51–57; Piecuch 2008]. Children and teenagers should be prepared to receive and apply technical knowledge in everyday life. The grounds for that are laid by school, but it should be accompanied by other cultural and educational institutions, and by family [Depesova, Knych, Noga 2014: 59–64; Furmanek 2006: 33–48; Hrmo, Kundratowa, Tinakova 2005]. Forming children’s and teenagers’ technical interests is a matter of the utmost importance. Hence the necessity to coordinate the efforts of all educators in order to encourage students to acquire knowledge independently and to take an active part in an educational process organised by school. Such a process requires from students the practical usage of mental work methods. The knowledge about technology should systematically be updated because of a dynamic scientific and technical development or due to new technologies. This study shows selected survey results of students’ technical knowledge on three different educational stages in Poland [Haskova, Pisoňova, Bitterova 2011; Kozik, Depesova 2007; Nazar 1973]. The necessity of the universal technical education of the youth, understood as providing them with the basis for technical culture, is a consequence of a widespread and still growing importance of technology in all domains of contemporary life. In the face of modern technical culture requirements, present day education cannot be limited to acquiring manual skills. It should at the same time ensure gaining basic technical knowledge and developing technical thinking and interests [Depesova 2011: 51–57; Forming children’s and teenagers’ technical interests is a matter of the utmost importance. Hence the necessity to coordinate the efforts of all educators in order to encourage students to acquire knowledge independently and to take an active part in an educational process organised by school. Such a process requires from students the practical usage of mental work methods. The knowledge about technology should systematically be updated because of a dynamic scientific and technical development or due to new technologies.

The authors deal with the creation of the teaching text and describe its place in material didactic means. They take into account the components, functions, structure, difficulty in the creation of the text, as well as the actual writing of the text and its structure in the textbook. In the end, the authors show their own approach to writing a textbook and evaluating it with pupils using the Close Test. All the research was done on a sample of 150 pupils whose results showed that the didactic text is manageable by students of the 4th grades of engineering and electro technical professions.

The article deals with a special analysis of a random vibration signal received from working process. In principle, only time intervals between random phenomena whose summit values exceed the given limit are measured. Theoretically, phenomena stochastic distribution approximates to exponential distribution. The chart analysis of real distribution reveals characteristic features which help to recognize various technical states.

In order to improve the mechanical properties of the layer deposited by anodic oxidation of aluminum on the material EN AW-1050 H24, in the contribution was investigated the microhardness of the deposited layer as a function of the physic-chemical factors affecting in the process of anodic oxidation at the constant anodic current density J = 3 A.dm-2 in electrolyte formed by sulfuric acid and oxalic acid, with the emphasis on the influence of electrolyte temperature in the range – 1,78 °C to 45,78 °C. The model of the studied dependence was compiled based on mathematical and statistical analysis of matrix from experimental obtained data from composite rotation plan of experiment with five independent variable factors (amount of sulfuric acid in the electrolyte, the amount of oxalic acid in the electrolyte, electrolyte, anodizing time and applied voltage).

All components of a huge machine tool need to work together perfectly to ensure not only a quality finished product, but operator safety. One of those many components is the material of support panels and moving parts in the machine construction. Mechanical structure of the machine, in most cases does not reach the technical level of regulatory techniques or electric drives and potential increase in dynamics, speed or accuracy of the machines remain unused. Used classic construction materials, steel or light alloy then zoom in to limit their physical capabilities. Designers have machine tools or robots are forced to solve the formidable task in the form of reducing the weight of the moving parts while maintaining or even increasing stiffness with respect to the thermal stability or damping. Laminates are for construction of production machines, robots and manipulators of crucial importance. One big advantage is the high rigidity while maintaining low specific weight. The presented paper is focused on the investigation of composite sandwich construction produced by prepreg technology, which is the suitable production choose for construction of machine tools parts. First of all, the production of sandwich structures with cork core, honeycomb core and foam cores are compared and described. In terms of the production process it is a method very friendly to the environment, since there are no leaks styrene vapours into the air. Since it is important from the perspective of a manufacturer of transport or machine industry manufactured from environmentally friendly materials, so naturally from materials that are from the perspective of safety of passengers (operators of machine tools or robots) at a high level, when any accident was lowest possible hazard due to fire (burn materials used) and terms of the strength of composite materials. This is one of the major scientific articles and to find the most ideal surveyed composite sandwich materials that would be the greatest possible extent fulfils the required properties. In the experimental part of the article are compared and investigated the mechanical characteristics of composite sandwich structures with regard to varying number of layers of predimpregnated skin materials due to the different types of core materials suitable for use in the machine industry. In addition, these characteristics are an important part of the article research because described the influence number of layers to values of the bending stiffness those composite structures.

In the processes of surface treatment of specific wood products, a variety of coatings are used, which even in small-scale production represent the presence of certain hazardous chemicals. Risk substances from the group of volatile organic compounds (VOC) in surface treatment processes of wood products constitute a large number of contaminants that negatively affect both the working and the environment. These are, in particular, still used solvent-based coatings (CN, PUR, PES). The presence of solvents, thinners for consistency and viscosity treatment in coating processes and curing of these coatings a serious environmental risk even in small surface treatment operations in the production of special wood products (sporting goods, musical instruments, artistic and solitary wood articles). To solve the suggested problem, it is necessary to analysed all aspects that could reduce the production of these hazardous chemical substances. We have proposed a variety of eco-technical separation devices: using adsorption technologies with (or without) regeneration of adsorbent for effective capturing of pollutant emissions. Our research has been comparing the effectiveness of capture of pollutants (VOC) in small scale model plant surface treatments of special wood products.

The aim of this paper is to introduce the reader into the field of didactic means and their use by educators at universities with technical orientation from students´ perspective. To check the status of the two selected universities in the Slovak Republic and one university in the Czech Republic, we conducted a research, which was attended by 194 respondents and its results are presented in this paper.

Cieľom prispevku je uviesť citateľa do problematiky a výsledkov výskumu dizertacnej prace spracovanej na temu rozvoj informacnej kompetencie prostrednictvom e-learningu. Tu sme sa snažili naznaciť vzťah vzdelavania a komunikacných a informacných technologii. Prispevok ďalej informuje o výsledkoch výskumu dizertacnej prace a kvality e-learningoveho iucebneho textu urceneho pre predmet Strojarska výroba pre stredne odborne skoly pre 1. rocnik nadstavboveho studia v odbore 6476 4 technicko-ekonomický pracovnik. Výskum bol realizovaný prostrednictvom uciteľov technických profesijných predmetov a žiakov na stredných odborných skolach so strojarskym zameranim SOSA Trnava, SOS Senec a uciteľov strojarskych predmetov s nestrojarskym zameranim SOSE Trnava. Výsledky výskumu ukazali, že predložena dizertacna praca splnila predsavzatý cieľ, pripravený e-learningový ucebný text je lepsi ako dostupne ucebnice a tvori im alternativnu možnosť pri samostatnom studiu žiaka.

machines, which as members of the management of company must deal with. There are accountable consequences of untreated risks that may stop a dangerous event. In this case, damage can be life or health of users or it can create damage to their property i.e. that may end up as damage of the machine. Contribution from own perspective is focused on: defining the basic concepts of base solution, logistics system methodology management of technical risks and logistic system analysis of the machinery.

In this paper we indicate the objective, space and the need of teaching of the Engineering pedagogy in the university field of study the Teaching of Technical Vocational Subjects, its use in practice and conduct of the research in the Slovak Republic and the Czech Republic. At the same time we are trying to prove its place in the International Society for Engineering pedagogy, to mention and also do not forget the founder of the national group and the first President of the Slovak Monitoring Committee Prof. Ing. Dusan Driensky, PhD., EUR ING, ING-PAED IGIP. The current president is Mr. doc. Ing. Roman Hrmo, PhD., ING-PAED IGIP.

The paper investigates the influence of the chemical composition and temperature of electrolyte, the oxidation time, voltage, and the current density on Vickers microhardness of aluminium oxide layers, at the same time. The layers were generated in the electrolytes with different concentrations of sulphuric and oxalic acids and surface current densities 1 A·dm−2, 3 A·dm−2, and 5 A·dm−2. The electrolyte temperature varied from −1.78°C to 45.78°C. The results have showed that while increasing the electrolyte temperature at the current density of 1 A·dm−2, the increase in the layer microhardness values is approximately by 66%. While simultaneously increasing the molar concentration of H2SO4in the electrolyte, the growth rate of the microhardness value decreases. At the current density of 3 A·dm−2, by increasing the electrolyte temperature, a reduction in the microhardness of the generated layer occurs with the anodic oxidation time less than 25 min. The electrolyte temperature is not significant with the changing values of the layer microhardness at voltages less than 10.5 V.

Currently, composite materials are considered like progressive materials 21st century, they can solve many of the current problems with light, faster and more efficient materials, components and systems. We have to take full advantage of the benefits from the application of composite of materials, not enough for us just the research and development of new products, but we also have other professionally educated successor in the younger generations. And that's why today of great importance also have activities related to education and training.

The KEGA project No. 026STU-4/2011 “The model of assessing the quality vocational training in the secondary vocational schools in Slovakia” deals with the analysis of the approaches to quality assessment of vocational education and training at home and abroad, and developing and piloting a model of quality assessment of education and training at the secondary vocational schools in the Slovak Republic. One of the quality evaluation criteria in this area is the quality of textbooks, which is being dealt with in this paper. The aim of this paper is to introduce the reader into the subject of information competencies, e-learning and the methods for assessing the quality of textbooks. The contribution informs about the quality research of an e-learning textbook for the subject of Machine Production developed for the first-year students of post-secondary course majoring in 6476 4 — training the technical-economic staff. The research covered teachers of technical subjects in the secondary vocational schools of engineering focus, including the Secondary Vocational School of Automobile Industry (SOSA) Trnava, the Secondary Vocational School (SOS) Senec, as well as the teachers of engineering subjects with a focus on non-engineering subjects, such as Secondary Vocational School of Electrical Engineering (SOSE) Trnava. The research showed that e-learning material is better than the classical textbooks available. The teachers assessed a total of 616 properties in the range of 0, 1 and 2 of the assessment scale.

The application of geosynthetic materials has become an ordinary part of not only transport constructions. Such materials are very versatile depending on the earth construction requirements and soil character. With regard to their popularity in use, research and development of new material and innovations of the existing ones are under way, so that the demands on their usability were met and their long life was ensured. According to their production methods, geosynthetics may be classified into basic groups of woven, non-woven and knitted materials. According to their function, which is expected from the different types of geosynthetics, we distinguish geosynthetics with a filtration, separation, protection barrier, erosion control, drainage and reinforcement functions. However, the application of the geosynthetic materials is not possible without a conveniently prepared subgrade. The use of heavy machinery thus becomes an important step in the implementation of transport constructions. Without quality preparation of the surface and subgrade of the body, the effectiveness of the geosynthetics would be supressed and their life would be much shorter. This could lead to deformations and cause fatal consequences to the overall transport structure. A set of earth works, depending on the type of transport structure, precedes the laying of the geosynthetic material. In general, heavy machinery is used to handle earth in extraction or filling, removal of unsuitable sharp-edged stones and other undesirable objects, to even the surface and to compact it. The article deals with the building machines vital for the preparation of the earth body before the application of geosynthetics. At the same time, it mentions the basic types of geosynthetic materials used in transport constructions.

Proposal soil characteristics represent the most important physical-mechanical parameters for foundation engineering purposes. At present, there are a number of databases produced by the Czech Geological Survey, which building companies use free of charge. Further to the existing data, the databases could be completed with the proposal soil characteristics that would provide free information on the benchmark characteristics of different foundation soils in a modern, fast and easy manner, and thus facilitated its preliminary assessment. In the future, such data could be interconnected with the database information on borehole exploration, slope instabilities, information on the area geology, etc., on the basis of which could be generated a complex preliminary assessment report whether a locality is suitable for foundation engineering purposes. This would render a fast and easy orientation in the given locality even before the survey itself and would be completely free of charge.