Tvorba regresného modelu na základe experimentálnych skúšok
Regression model creation based on experimental tests of conveyor belts against belt rips resistance Conveyor belt impairing by belt rip can lead to its sequential destruction so that economical costs for operation of belts are rising. Adjusting basic parameters of conveyor belt properties is necessary to assure great belt rip resistance. The paper describes shortly methodology that should be used with experimental tests of conveyor belts regarding to its belt rip resistance. In the paper there is mathematical mentioned model creation describing the forces acting to the belt by falling-down a material. At the end of the paper there are described ways to optimize methodology of measuring process to make costs (financial or time) much lower even in the phase of belt designing.
3D MATHEMATICAL MODEL OF CONVEYOR BELT SUBJECTED TO A STRESS LOADING
The transport is an element of the technological process that has the important influence on economy of every company. Because the transport costs affect price of the final product, it is important to improve the technical and economical level of the transport.The belt transport is one of the widely used transport systems in industry. It is used in various branches of industry, like mining, building industry, food industry, at the airports, in supermarkets, etc.
Time and Heritage
As a historian studying what can be considered a form of intellectual history, I have slowly come to adopt Michel de Certeau’s observation made at the end of the 1980s that ‘objectifying the past, for the last three centuries, has undoubtedly left unconsidered time within a discipline that has continued to use it as a taxonomic instrument’. To a certain degree, time has become commonplace for the historian who has preserved or instrumentalized it. It is not considered because it is inconceivable, but because we do not think of it or, more simply, we do not think about it. As a historian attempting to pay attention to the time I’m living in, I have thus, like many others, noticed the swift development of the category of the present until it has become obvious that the present is omnipresent. This is what I refer to here as ‘presentism’.