The damping or the damping forces represent certain speciality in the investigation of the internal dynamics of the transmisson systems. The special significance has this damping parameter especially in the areas of impact effects in the high-speed light aircraft and mobile transmission constructions. On the example of gear mesh in one branch of forces-flow in the presudoplanetary reducer deal the paper with some partial results of the analysis of the influence of combination damping, i.e. linear and non-linear damping, on the gear mesh dynamics.
With respect to the monument care object of interest, it is possible to narrow down the relationship of ethnography and the care of monuments to the field of vernacular architecture in the wider context (both exterior and interior of dwellings including the farming rooms, village as a resident unit with all functions, cultural andscape affected by a longstanding human presence and activities, etc.) as well as marginally to the sphere of folk visual arts (namely plastics and paintings). When ethnography was being formed as a scientific discipline, this interest in vernacular architecture developed also an effort to conserve the artifacts of vernacular architecture. the ethnographers - workers in the field of the monument care or museums - studied vernacular architecture and simultaneously became aware of the necessity of preservation of its artifacts, both in the open-air museums and directly in situ. and The ethnographers, museologists and preservationists apply postulates as well as practical experience from their specializations, among others in the field of the specialized open-air expositions of vernacular architecture. Construction of those expositions may be based on preservation of the object in situ (rymice, třebíz), but also transfers may be applied and the open-air museums on the so-called “green field” can be constructed (Rožnov pod Radhoštěm, Strážnice). There are some institutions, where we can find the combination of both (Veselý Kopec). In addition to that, a whole range of solitary rural buildings, which were redeveloped and utilized for all sorts of exposition purposes or for some other social and cultural objectives, exist. Ethnographers working as museologists and preservationists participated in establishment, redevelopment, furnishing, as well as in the follow-up maintenance of those rural buildings. Those buildings are established by the museums (detached branches of ethnographical institutes, monuments of some local celebrities), by municipalities as well as by other governmental and private organizations.
Vícefázová hydrodynamika se zabývá studiem heterogenních soustav složených z více než jedné fáze. pod pojmem fáze zde rozumíme makroskopicky rozliššitelnou složku směsi, která je nesmísitelná se složkami ostatními., The multiphase fluid mechanics is a broad inter-disciplinary research field with the main goal of understanding the behaviour of multiphase flow systems. These are macroscopic dispersions of particles in fluids. The following systems can serve as an example: bubbles in liquids, drops in fluids, solid particles in fluids. Multiphase flows are a frequent occurrence in both natural and man-made systems and technology. This contribution presents a brief introduction into the multiphase arena, showing what is the main problem and its solution in this relatively new and challenging branch of science., Marek Růžička, Jiří Drahoš., and Obsahuje seznam literatury