Thermal fluctuations in time-dependent quantum processes are treated by a constant-temperature generalization of Wigner's formulation of quantum mechanics in phase space. To this end, quantum Nosè-Hoover dynamics is defined by generalizing the Moyal bracket. Computational applications of the formalism, together with further theoretical developments, are discussed.

In this study, a new one-chip-style quartz crystal motion sensor which detects one-axis angular velocity and one-axis acceleration is proposed. Some characteristics of the sensor are simulated by the finite element method, along with some simulations of vibrational characteristics. This sensor is aimed to be used as a small wristwatch-type instrumentation unit to monitor some motions of the human body. The dimensions of the prototype sensor are 16 mm in length, 6 mm in width and 0.3 mm in thickness. The sensor consists of two parts with different functions; one part is a flatly supported vibratory gyrosensor using a quartz crystal trident-type tuning fork resonator and the other is a frequency-changeable type acceleration sensor. The results of simulations show, that the gyrosensor part has a good linearity of sensitivity, although it is also sensitive to an angular velocity which could not be detected fundamentally. It also has a good linearity of sensitivity for detection of acceleration.

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Genetic algorithms (GAs) are applied to searching for tape feeder arrangement to optimize placement time of chip mounters where a combination of parts placement sequence and tape feeder arrangement affect placement time under constraints. Compared to general GAs, our improved tape feeder arrangement GA using a new genetic operator called rotation was confirmed effective for multihead chip mounters handling several parts at once.