We study false vacuum decays catalysed by magnetic monopoles which act as tunnelling sites with exponentially enhanced decay rates. The field profiles describing the do not have typically assumed $O(3)/O(4)$ symmetry, thus requiring an extension of usual rate calculation. To numerically determine saddle point solutions describe process we use a new algorithm based on mountain pass theorem. This...

Currently, there is a lack of affordable and simple tools for the estimation these costs, especially machining operations. This particularly true manufacturing SMEs, in which cost machined parts usually performed based only on required material part production, or involves time-consuming, non-standardized technical analysis. Therefore, tool was developed, calculated times amount material, final...

Machining process in Manufacturing system is the removal of material to produce a desired shape, size and, or weight particular part. This involves use cutting, grinding and boring tools as case maybe, itself not free from challenges that includes reduction tool life which are usually affected also effect friction affects machine parts. Therefore, an engineering practice manufacturing required ...