We continue the study of the time evolution of a system consisting of a piston in a cubical container of large size L filled with an ideal gas. The piston has mass M ’ L and undergoes elastic collisions with N ’ L gas particles of mass m. In a previous paper, Lebowitz et al. (1) considered a scaling regime, with time and space scaled by L, in which they argued heuristically that the motion of t...

Advanced 300-mm ASIC/SOC (application-specific integrated circuit/system on a chip) fabrication plants with multiproduct and multiprocess models will require both a high level of flexibility and efficiency to achieve cost-effective manufacturing cycle times. Today, potential solutions to achieve breakthrough manufacturing cycle times are under consideration. Given the dynamic nature of all of t...

As modern manufacturing plants tend to group their machinery in manufacturing cells for greater efficiency, a good scheduling technique within each cell is very critical in ensuring the smooth operation of the entire plant. With this in mind, this study is focused on scheduling jobs in a mold manufacturing cell. The present method involves many problems of coordination between departments and s...

In the ®eld of manufacturing, there is a need to develop large-scale manufacturing information systems. This is especially true in the Japanese steel manufacturing industry where CIM is the core management technology. But developing such systems requires large amounts of time and manpower, and furthermore, these type of projects are very dif®cult to manage. Therefore, in order to ease the proce...

NIST has characterized two large diameter (35.8 mm) piston/cylinder assemblies as primary pressure standards in the range 0.05 MPa to 1.0 MPa with uncertainties approaching the best mercury manometers. The realizations of the artefacts as primary standards are based on the dimensional characterization of the piston and cylinder, and models of the normal and shear forces on the base and flanks o...

ADiesel cycle enginewith internal and external irreversibilities of finite combustion rate of the fuel, friction and heat leakage is investigated in this paper. The heat transfer between the working fluid and the environment outside the cylinder obeys generalized radiative heat transfer law [q ∝ ∆(T n)]. Under the conditions of the fixed total cycle time and fuel consumed per cycle, the optimal...

Primary human fibroblasts have the remarkable ability to use their nucleus like a piston, switching from low- to high-pressure protrusions in response to the surrounding three-dimensional (3D) matrix. Although migrating tumor cells can also change how they migrate in response to the 3D matrix, it is not clear if they can switch between high- and low-pressure protrusions like primary fibroblasts...

Some reciprocating compressors have connecting rods with ball joints to join the crankshaft and the piston. The load of the pressurized gas inside the cylinder directly loads the joint of the piston and the connecting rod. For this reason, it needs to be highly reliable, so it needs to be made of hard material, high-precision spherical surfaces, and a complicated assembling line. Accordingly, t...

A Diesel cycle heat engine with internal and external irreversibilities of heat transfer and friction, in which the finite rate of combustion is considered and the heat transfer between the working fluid and the environment obeys Newton’s heat transfer law [ ( ) q T ≈ ∆ ], is studied in this paper. Optimal piston motion trajectories for minimizing entropy generation per cycle are derived for th...

This paper demonstrates the influence of the trailing end of the piston, or inboard, pad on the propensity of a brake to generate audible squeal. The unique technique was employed to measure the dynamic centre of pressure at the pad/disc interface during a normal braking operation. This novel technique uses an embedded pressure sensitive film within the pad. The paper also presents the co-plana...