This paper discusses cake-cutting protocols when the cake is a heterogeneous good that is represented by an interval in the real line. We propose a new desirable property, the meta-envy-freeness of cake-cutting, which has not been formally considered before. Though envy-freeness was considered to be one of the most important desirable properties, envy-freeness does not prevent envy about role a...

Improving the accuracy, reliability, and performance of cyber-physical systems such as high-speed machining, laser cutting, welding cladding etc. is one most pressing challenges in modern industry. CNC system carries out data processing significantly affect on accuracy operation equipment. The paper considers problem controlled axes motion differential characteristics internal representation di...

One of the factors that influence dynamic characteristics machining systems is cutting tool. Cutting tools are very diverse, and receptance coupling substructure analysis (RCSA) essential for analyzing each For RCSA, a full matrix equipment essential. In this study, rotational degree-of-freedom was estimated analyzed using translational receptance. Displacement/moment according to distance resp...

The technological preparation of production (TPV) is one the key stages product life cycle (LPL) when designing and developing new aircraft engines. TPV system foresees use following instruments: CAD/CAM/CAE systems to ensure implementation operations: automated design, engineering calculations; Product Data Management (PDM) data management; Enterprise resource planning (ERP) for corporate plan...

We examine the history of cake cutting mechanisms and discuss the efficiency of their allocations. In the case of piecewise uniform preferences, we define a game that in the presence of strategic agents has equilibria that are not dominated by the allocations of any mechanism. We identify that the equilibria of this game coincide with the allocations of an existing cake cutting mechanism.

There are presented investigation results of polymer-composite parts abrasion. The dependences for the definition surface roughness at material hydro-abrasive cutting shown. theoretical and experimental investigations processes presented. A procedure their carrying out, tool equipment used is described. on preparation to splicing designing a technological process abrasion offered.

The prediction of rock sawability is important in the cost estimation and the planning of the stone plants. An accurate estimation of rock sawability helps to make the planning of the rock sawing projects more efficient. Rock sawability depends on non-controlled parameters related to rock characteristics and controlled parameters related to properties of cutting tools and equipment. In the same...

According to WHO, at any one time, around 50 per cent of medical equipment in lowand middle-income countries cannot be used because of lack of maintenance or spare parts.1 We have found that unwillingness or inability to repair equipment and put it back in use is also a major cause. New equipment is made available by different international non-government organisations (INGOs) competing with on...