A simple method to obtain the bulk generation time and surface generation velocity in the completely depleted state is presented. The method is based on measuring both the gate current and high frequency capacitance at the time, t=0, soon after the gate voltage is switched from a depletion to an inversion state on an MOS capacitor. The gate current I_go and high frequency capacitance C_hfo at t=0 is measured for various step gate voltages, and the plots of I_go/(1C_hfo/C_ox) against (C_f/C_hfo1) is obtained as the straight line, from which the two generation constants are calculated. In respect of some advantages compared to already existing methods, it is pointed out that our method does not require to know the impurity density and depletion layer width of semiconductor for the determination of the two generation constants.

The purpose of this paper is to clear the problems on the analysis of the magnetization characteristics of the magnetic rods magnetized by a coil. For obtaining the magnetization characteristics by the numerical analysis, the finite element method referring to the Green's function are used in this paper. It is necessary to reduce the calculation error, computer memory and execution time in the numerical analysis. The results of the analysis for these requirements are obtained as follows.
(1) The analytical region should be divided so that the magnetic energy in each triangular elements is equal. The value of the magnetic energy is determined by the allowance of the calculation error.
(2) The analytical region has an optimum area for the dimension of the magnetic rod. The length of the longitudinal direction of the rod should be 2 times of the rod length, and the length of the lateral direction of the rod should be 15 times of the rod radius.

A model of bilateral interaction in the auditory nervous system was presented on the basis of digital-chemical-analog functions of neuro-synaptic circuits in order to analyze the mechanism of cross correlational information processing for sound localization. The system was composed of a bilateral pair of auditory relay nuclei, i.e., cochlear neclei, superior olives, and inferior colliculei as well as a pair of trapezoid bodies which connect contralateral cochlear nucleus and ipsilateral superior olive. The model could detect interaural phase differences using the interaction of excitatory and inhibitory postsynaptic potentials evoked by the respective ipsilateral and contralateral putputs of the cochlear nuclei rather than Bergeijk's or, originally, Békésy's travelling waves on phase detection cells. The two parameters on sound image, lateralization index and probability fusion were introduced as the difference and the sum of the bilateral outputs of superior olives, respectively. The effect of 'phase-intensity trade' as well as 'time-intensity trade' was simulated in the model to compare with the experimental results. Dominancy for binaural information processing was discussed and the possibility of inter- and intra-modal information processing involving temporal operations among analogous postsynaptic potentials from various sensory inputs was suggested.

The harmonic distortion and the intermodulation distortion of a laser diode are calculated to be severely influenced by the coherent interaction with reflected waves and are given to be about 2030 dB larger than intrinsic values of the laser diode without reflected waves.

An assumption is made on the generative nature of the verbal thought process, based on an analogy between language use and verbal thought. A procedure is then presented for acquiring the set of generative rules from a given set of concept strings, leading to an efficient representation of verbal knowledge. The non-terminal symbols derived in the acquisition process are found to correspond to concepts and superordinate concepts in the human process of verbal thought. The validity of the formulation and the efficiency of knowledge representation is demonstrated by an example in which knowledge of biological properties of animals is reorganized into a set of generative rules. The process of inductive inference is then defined as a generalization of the acquired knowledge, and the principle of maximum simplicity of rules is proposed as a possible criterion for such generalization. The proposal is also tested by an example in which only a small part of a systematic body of knowledge is utilized to make inferences on the unknown parts of the system.

The minimum current of a two-junction SQUID gate has been studied theoretically. An analytical expression for the current-voltage characteristics of the SQUID gate has been obtained, which includes the minimum current of the SQUID gate. Studies have been made of the dependences of the minimum current on parameters of the SQUID gate such as an interlinked magnetic flux, a loop inductance and a resistance. It is shown that the minimum current of the SQUID gate depends strongly on the interlinked magnetic flux, while it becomes the same as that of a single junction in the absence of the magnetic flux. It is also shown that the obtained analytical results agree well with those of computer simulation.

Differential detection of π/2-TFSK, which turns to MSK and π/2 shift PSK in the limitting cases, is analyzed in order to find conditions under which the error performance is not degraded severly and to make clear the relationship between error characteristics of MSK and PSK differential detection in the multipath interfering channel. A two-wave model of two Rayleigh waves is adopted as a frequency selective channel. The conditions under which the π/2-TFSK scheme is able to be implemented and detected with the differential detection are investigated. It is indicated that these can be realized by CPFSK. It is shown that existence of a flat part in the excess phase transition exhibits an important role in order not to be severly corrupted by the multipath interference.

A method is presented to synthesize many-valued majority elements which can correct errors and simultaneously realize logic functions.

The principle of measuring with random vibration which is well known in industrial vibration testing is applied to measuring the mechanical properties of bio-materials. In this method it is possible to measure in short time (about 10 seconds) and measuring values are not disturbed by noise and the region of the body vibrated is not limited.

The system is composed of multiple processors and finite buffers. Two Poisson streams arrive at the system, one of which is controlled to enter the system by a two-level threshold regulation method with continuous monitoring. An efficient numerical procedure for analysis is presented.

Exact equipotentials and lines of electric flux between two thin conducting plates in an anisotropic medium are theoretically presented by using an affine transformation and a conformal mapping technique.

This paper presents a method of estimation for the temporal resolution of a catheter type blood velocimeter and applied it to a laser Doppler blood velocimeter (LDV) with an optical fiber. After the evaluation of temporal resolution practical measurements were made in model flow tubings and in the coronary of mongrel dog.