The process orientation. The roots and scale of use in the world

W artykule przedstawiono koncepcję orientacji procesowej oraz jej popularność i zastosowanie w różnych regionach świata. Materiał do opracowania stanowią źródła literaturowe, szczególnie te przygotowywane w ośrodkach naukowych, które zajmują się badaniami nad rozwojem orientacji procesowej, takich jak: Aalborg University, Graz University of Technology, Eindhoven University of Technology, Queensland University of Technology, University of Potsdam , University of Innsbruck, Institute of Databases and Information Systems, Ulm University, Hochschule Ravensburg-Weingarten, Nanyang Technological University, Singapore, Singapore Institute of Manufacturing Technology, oraz raporty takich firm, jak: Capgemini, Gartner, BPM&O Akademie, BPtrends. Studia literaturowe zostały wzbogacone przez analizy wykonane przy wykorzystaniu narzędzia analitycznego Google Trends.The following paper provides an overview of the concept of the process orientation and its popularity and use in the different regions of the world. The main methods to collect the information was desk research of scientific papers, reports or research data an results from scientific institutions around the world, particularly those that do research on the process orientation, such as: Aalborg University, Graz University of Technology, Eindhoven University of Technology, Queensland University of Technology, University of Potsdam, University of Innsbruck, Institute of Databases and Information Systems, Ulm University, Hochschule Ravensburg-Weingarten, Nanyang Technological University, Singapore, Singapore Institute of Manufacturing Technology and companies such as Capgemini, Gartner, BPM & O Academy, BPtrends. Literature studies have been enriched by the analysis made using analytic tools Google Trends

DETERMINATION OF THE RATIONAL PROFILE FOR THE DISK WORKING TOOL WHEN CULTIVATING OF SOD PODZOLIC SOILS

Maintaining soil fertility is one of the main objectives of agricultural production. An important factor in soil fertility is its optimal structure. For the minimum cultivation of soil widely used equipped with spherical cut-off discs heavy harrows. The purpose of their use, along with others, in the cultivation of heavy soils, for example, chernozems, is the depression of soil boulders and, thus, the optimal structure. In the conditions of intensification of agricultural production under the influence of such soil-working tools in the cultivation of malocontuitive sod-podzolic soils and running gears of mobile equipment, the destruction of the soil structure, the reduction of the number of agronomically valuable water-supply units, and the spread of soil. Thus, for the cultivation of such soils, it is necessary to use discs of another profile, which would ensure the minimum destruction of agronomically valuable watertight aggregates. In order to create such a working body, the process of structuring the agronomically valuable water-conserving aggregates, factors influencing it and analyzing the energy criteria for the formation of a water-tight structure is considered. The features, which arise during mechanical cultivation of soil, influence of cultivation on its structure and features of the stress-strain state of soil are studied. A mathematical model is developed that allows calculating the stress state of the soil and designing the most rational form of disk working bodies. In the conducted studies, the influence of the depth of cultivation, the number of cutouts, the size of the cutout angle and the length of the chord of the projection were studied. On the basis of the developed mathematical model, a rational profile of the disk working organ for the cultivation of small-coupling sod-podzolic soils was obtained and its tests were performed, which showed a decrease of the erosion-dangerous particles of the soil by (<0,25 mm)  24%

Substantiation of the radius of curvature of the chisel plow point of the working bodies of tillage implements

Chisel plows with a chisel as a working body, loosen the soil without mixing the layers. The analysis of the conducted research concludes that the most widespread is a cylindrical surface of a chisel working body a chisel with a constant radius of curvature. It is theoretically estab lished that at the radius of curvature of the bit up to 0.1 m, the soil on the surface of the bit will move chaotically, while the curvature of the bit does not affect the percentage of wrapped plant debris. As the radius of curvature increases, the force of inertia decreases, therefore, the an gle of soil rise decreases. For the radius of curvature of the bit bigger than 0.5 m, the force of inertia has almost no effect on the angle of the soil rise. Without the influence of the force of inertia, the soil particles begin to move more orderly, the soil and plant debris begin to move along trajectories corresponding to the shape of the bit, which increases the coefficient of wrapping plant debris. It is established that at the ra dius of curvature of the bit 0.5 m and at an operating speed of 2 m·s -1 there is an orderly movement of soil on the surface of the bit, which affects the percentage of wrapping of plant remains. The use of a chisel plow point with a cylindrical surface increases the wrapping of plant remains by an average of 17%

Žemės ūkio inžinerijos fakultetas

Vytauto Didžiojo universitetasŽemės ūkio akademij

Mokslas

Vytauto Didžiojo universitetasŽemės ūkio akademij

Piktžolių naikinimo aukštatemperatūrėje aplinkoje tyrimas : daktaro disertacijos santrauka : technologijos mokslai, mechanikos inžinerijos kryptis (09 T), žemės ūkio inžinerijos, žemės ūkio technikos šaka (T 420)

Santr. anglAut. darbų sąrašas: p. 5 (4 pavad.)Vytauto Didžiojo universitetasŽemės ūkio akademij

[Pasisakymas]

Išsp. str.: Kazlauskaitė, M. Jubiliejų atšventę ASU inžinieriai dirbs žemės labuiVytauto Didžiojo universitetasŽemės ūkio akademij

Žemės ūkio inžinerijos fakultetas

Vytauto Didžiojo universitetasŽemės ūkio akademij

Rational cowshed roof insulating and ventilation system parameters

It was composed the formula for calculating the heat transfer coefficient of a building surface. This formula integrally evaluates the heating balance of the building, incondensable water vapour condition, constructional and technological rates. When the density of animals keeping is at the law rate (the density of total flow of animals to ground is 90 W/m2) rational outside building surface heat transfer coefficient is 5W/(m2.K). When the rate of the density is high (150 W/m2), then rational wall heat transfer coefficient - 3.6 W/(m2.K). It was composed the formula for calculating the cowshed ventilation system parameters, depending on outdoor air temperature. While the outdoor air temperature is dropping from +20 C to -20 C, the area of cowshed vent should be reduced 85%Vytauto Didžiojo universitetasŽemės ūkio akademij

Stęzenie i emisja amoniaku w oborach

Under production conditions ammonia emission was studied in three types of cowshed: in insulated cowshed of field cows, in an uninsulated cowshed with laying boxes and open manure tracks, and in a cowshed with the insulated roof, boxes and partly slatted floor. During the research the inside and outside air temperature, CO2 concentration in the inside and outside air, and the NH3 concentration in the inside air were measured. From the measurement data ventilation rate and ammonia emission rate was calculated. The following conclusions and results describe the research. During housing period the NH3 concentration and emission from animal place in the insulated cowshed of tied cows was 9 ppm and 29 g per day, in the uninsulated cowshed with laying boxes and open manure tracks - 3 ppm and 17 g per day, and in the partly insulated cowshed with laying boxes and partly slatted floor - 8 ppm and 29 g per day. The air temperature of cowshed has a great influence on NH3 concentration and emission. When the temperature rises from 0º C to 15 Cº the emission from an animal place increased from 20 g to 30 g per day. Ammonia emission during a 220-days housing period from animal place in an uninsulated cowshed is 3,7 kg, and in an insulated one 6,4 kgVytauto Didžiojo universitetasŽemės ūkio akademij