Effects of wall type cold aperture for linear IRCCD array on aperture efficiency and modulation transfer function (MTF) are discussed. The narrow dynamic range of currently available linear IRCCD array makes the forward looking infrared camera (FLIR) frail to environmental thermal change. Preventing the detector element from being exposed to infrared emission from warm housing is the key technology for making full use of IRCCD's narrow dynamic range. Wall type cold aperture, witch is a successive barrier built between each detector element, is developed to block the infrared incidence across the neighboring aperture. The efficiency of the wall type aperture as a stop of warm housing emission is examined through experiment and computer simulation. It is shown that a very high efficiency is obtainable at the cost of a small amount of MTF reduction.

抄録全体を表示

The organizational substate of brain activity depends upon numerous anatomical connection and pathway. Evoked brain potential called “P300” was discovered while monitoring brain activities of a patient counting the number of sound stimulation.
However, there are some problems; it is difficult to EEG the region beyond bones. Then, we propose a new method for EEG and local regions of the brain.
To determine the temperature distribution more accurately it would be required to introduce the more complicated model of heat removal effect by blood flow and the experimental results. These problem are left for the future investigation.
There exists a clear cut difference between indicative and nonindicative stimuli in respect to the shapes of brain waves, with the plus peak induced by indicative auditorial and tactile stimuli resulting around, 300 to 400ms after the time of presentation, exclusive of the time when tactile stimuli in a complicated pattern was presented. It was discovered in measuring temperature distribution on scalps that the distribution from each kind of stimuli correspond almost exactly to the regions of judgement and recognition activity, which have been identified on brain maps in the past.

抄録全体を表示

The ink flight of electrostatically extracted ink jet was observed by He-Ne laser and an Application of this ink flight to tone reproduction is also described in this paper. Dielectric ink was used.
Ink is presumed to be in flight in the form of liquid thread at the nozzle tip and ink corpuscules beyond the region of ink thread. A liquid thread means a continuous flow of ink. In the region beyond the zone of liquid thread, ink corpuscules are generated randomly.
He-Ne laser made possible phtographing both an ink thread and the transition of ink jet beyond it in a picture. In analysis of the ink flight, the spread of ink and transition of ink jet were clarified by image processing concretely. Furthermore, we have proved that this transition of ink jet can be applied to tone reproduction.

抄録全体を表示

In this paper, a three-layered pattern-rotation model is proposed, which automatically generates rotated patterns from an input pattern. This model has the capability of rotating input patterns both at the stage of learning and recognizing, and has the merit that the loads of learning and recognizing can be freely adjusted. As for this model, if more rotated patterns are generated at the stage of learning, the load of learning becomes high but the load of recognizing decreases. Inversely, if less rotated patterns are generated at the stage of learning, the load of learning becomes low but the load of recognizing increases.
In the proposed model, it has following merits: its design is easier, the net size is smaller, learning and recognizing time is shorter than the conventional models that have a fixed rotation invariant net followed by an adaptive net.

抄録全体を表示

In flexible manufacturing systems (FMS), it is becoming more complex to manage operations of facilities, because of many requirements and constraints such as to increase product throughput, reduce work-in-process and keep the due date. Many scheduling methods have been proposed to solve this problem, yet they have not treated the case of finite buffer size.
This paper presents a scheduling method to solve the job shop scheduling problem with finite buffer size. The method realizes a hybrid scheduling system based on discrete event simulation by timed Petri-net and management of operational heuristics by temporal constraint propagation algorithm. By this method, it is made possible to generate a feasible schedule which satisfies the constraint of in-process storage capacities to circumvent the deadlock in automated production line.

抄録全体を表示

A reflection-type interference method for measuring the sound velocity and attenuation in a liquid using a multi-modes leaky Lamb wave device is described. The present method has the advantage of the measurement in a small quantity of liquid at plural frequencies by the use of one transducer. From the numerical analysis of the propagation characteristics of leaky Lamb waves on a 128° rotated Y cut-X propagation LiNbO₃ plate, a small-size leaky Lamb wave device with multifrequencies operation is realized. The fast Fourier transform (FFT) of an interference signal between an input signal and a received one makes it possible to shorter the acoustic path length in the liquid. As a result, the measurement error of the present technique is within 0.2% for the variable sound path length of 5 wavelengths.

抄録全体を表示