Wear Model of Sliding Rough Surfaces

Purpose of research. To develop a wear model that takes into account the quality parameters of the surface layer and friction conditions, which will allow, through controlled technological action, providing the required wear intensity of friction surfaces.Methods. Electromechanical processing, in particular, can provide the required intensity of friction surfaces wear being carried out in finishing and strengthening modes.An increase in wear resistance, endurance limit and other operational properties, and at the same time a change in the physical, mechanical and geometric parameters of the surface layer of parts is achieved by a combination of thermal and force influences on the surface of the processed part. To achieve this effect, an original installation has been developed, which includes a device for machining based on a universal machine with a set of necessary tools and devices for fixing a workpiece and supplying coolant and electric current of high power and low voltage, as well as an industrial electric current converter and control units for processing modes, switching devices and computers.Results. An approach to the representation of the nature of friction and wear has been proposed. Based on the proposed wear model, which takes into account the quality parameters of the surface layer and friction conditions, it is possible to provide the required wear intensity of friction surfaces through controlled technological action.The developed wear model, which takes into account the quality parameters of the surface layer and friction conditions, makes it possible to provide the required wear intensity of friction surfaces through controlled technological action.Conclusion. The calculated data obtained with the help of the developed model and the data obtained experimentally will find practical application in creating resource-saving processes for processing metal alloys and composite materials.

Simulation of Railway Lines with a Simplified Interlocking System

This paper deals with railway lines with low traffic intensity where trains are operated under simplified conditions. Those conditions are stated in a regulation, and there is no interlocking system on the line. The whole railway operation is organized according to a regulation in cooperation with the train crew. For the calculation of the throughput, we can use analytic or simulation methods. On those lines there is a big problem with the common working methods because of special circumstances on each line, which are influencing the technological times and reliability of the calculation. The simplified conditions are the transforming of regular interlocking systems on the administrative level. Therefore, it is very complicated to use a common simulation model. Most of the simulation tools are not able to work with it. The motivation of this paper is to prove that modern simulation tools are usable for that specific condition as well. The simulation model was built in SW OpenTrack which is able to modify its functions to figure out each technological action to ensure the correct function of the model. This functionality is described in the paper in general and implemented on a case study.

Movement, Narrative and Multiplicity in Embodied Orientation and Collaboration from Prehistory to the Present

The term ‘body of knowledge’ has a double meaning, implying a unified assemblage of knowledge as well as embodied cognition. But knowledge is not naturally unified, as was apparent in the first Body of Knowledge Conference, where the internalist neurosciences presenting themselves as universalist and objective were clearly divided from the externalist performing arts with their more experiential and practice-based character. Assemblage across such divides takes embodied, collaborative, social and technological action. I suggest that bridging of the divides from both sides is now starting to emerge through an augmentation of the dimensions of what Ed Hutchins has called a ‘cognitive ecosystem’ to include a complex multiplicity of culture, history, and exchange. A socio-historical cognitive ecosystem that emphasises the central importance of narrative, collaboration and movement, multiplicity, and orientation in embodied cognitive practises. Building on the talk I gave at the 2016 Body of Knowledge Conference, this paper aims to explore the roles of movement, narrative, and multiplicity in embodied orientation and collaboration, from prehistory to the present. Disparate narratives of movement, multiplicity, collaboration, and cognition that are emerging in a variety of seemingly unrelated disciplines are woven together in three parts: 1) recent neuro-scientific research on the ‘cognitive map’ in the brain; 2) recent reticulated accounts of how hominims moved out of Africa; and 3 how differing knowledge traditions and ontologies can be seen to work together in the case of the chart drawn for Captain Cook by Tupaia, the great Polynesian navigator.

MODELS AND ALGORITHMS FOR CONSTRUCTING A FORMALIZED DESCRIPTION OF PRODUCTION TECHNOLOGIES

The problem of technological knowledge formalization is being considered. Discussed features of systems in the scope of ontological engineering of processes, applied to solving the problems of the structural representation of technologies associated with the organization of their analysis. Proposed a model of the concept of technological action, which identifies technological actions as holistic conceptual formations. Constructed the model of formalized description of technologies, which provides unambiguous transition from verbal descriptions of technologies to their ontological representations. Described algorithms for constructing a formalized description of technologies, which implement the logical procedures for automated and automatic construction of ontological representations of technologies. Concluded in the development of a new method of formalized description of technologies, the fundamental principles of which constitute the distinctive features of the proposed models and constructed algorithms.

Nihilism and the Problem of Future: Biodiversity Destruction As One of the Great Dangers of Technology?

Starting from the example of the Amazon, in Brazil, we intend to analyse how technology (mainly in its biotechnological face) appears as a threat to biodiversity, insofar as it acts through a reduction and standardization: technology needs to reduce diversity to something knowable to be able to control and exploit, in view of human necessities. In this sense, according to Hans Jonas, it is necessary to ask about the horizon of the future giving preference to the negative prognosis (fear rather than hope) to avoid that the harmful consequences of nihilism (marked by the absence of criteria capable of guiding technological action) affect life decisively. In this case, the Enhancement project proposed by transhumanism appears as yet another chapter in the history of risks represented by modern technology.

TECHNOLOGY'S REVENGE

Technology designed to solve one problem ends up creating another or undoing its own solution. For every technological action, one might say, there is an equal and opposite reaction: technology's revenge.