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Latent Image Sample Processing Using Machining Center
Toru Yamamoto,Rie Kunimune 한국정밀공학회 2023 International Journal of Precision Engineering and Vol.24 No.7
We have proposed latent image processing using a machining center, and have been conducting research in our laboratory for several years. Consequently, at present, the processing method is almost established, and it has become possible to process samples that are reasonably satisfactory in terms of cost and processing quality. However, currently, the evaluation method of latent image processing quality relies on visual inspection. Moreover, from the beginning, we believed that latent image processing could be used to make souvenirs and during experimental training at educational institutions, such as our institute, but until now, we had not specifically considered how to use it. Therefore, in this paper, we first introduce the three types of latent image processing that have been performed thus far, and summarize their characteristics. Subsequently, the evaluation method of the latent image processing quality and the utilization method are newly examined and the result of the confirmation is reported.
Ali, Rosidi bin,Gambang, Albert Chuan,Rajali, Hadil bin,Hassan, Raja Bidin bin Raja,Basir, Samusudin bin,Shiomi, Kunimune,Fujiwara, Shunji 한국수산자원학회 1998 한국수산자원학회지 Vol.1 No.-
Acoustic resource surveys were conducted by M/V SEAFDEC in the Gulf of Thailand and off the east coast of Peninsular Malaysia from September 5 to 28, 1995 for pre-NE monsoon season and from April 24 to May 17, 1996 for post-NE monsoon season, using the scientific echosounder FQ-70 (Furuno Electric Co.). Raw values of backscattering strength (SV) from the 200 ㎑ were carefully corrected and filtered to eliminate the influence of plankton. These corrected SV values were sorted out into pelagic and demersal fish, and were used to estimate biomass for each category of multi-species fish. Biomass of pelagic and demersal fish for each season was estimated both in the Gulf of Thailand within Thai EEZ and in the east coast of Peninsular Malaysia within Malaysian EEZ waters due to the availability of previous fisheries statistics and biological data. Dominant species were selected based on the fisheries statistics and landing place survey. Length (L) and weight were obtained from previous literature. Target strength (TS) of these dominant species were calculated as TS = 20 log (L) - 66. The distribution of the SV values for pelagic fish showed a distinct difference between pre and post monsoon seasons. Greater concentrations of SVs were observed from offshore compared to the nearshore waters in pre monsoon season. The distribution for the demersal fish showed that there was no clear difference between pre and post monsoon. The estimated biomass of multispecies fish in the Gulf of Thailand within Thai EEZ for the pre and post monsoon seasons was 9.2 × 10^5 tonnes (5.5 × 10^5 tonnes of pelagic fish and 3.7 × 10^5 tonnes of demersai fish) and 4.7 × 10^5 tonnes (2.0 × 10^5 tonnes of pelagic fish and 2.7 × 10^5 tonnes of demersal fish), respectively. The estimated biomass of multi-species fish off the east coast of Peninsular Malaysia within Malaysian EEZ for the pre and post monsoon seasons was 4.4 × 10^5 tonnes (2.3 × 10^5 tonnes of pelagic fish and 2.1 × 10^5 tonnes of demersal fish) and 3.1 × 10%5 tonnes (1.9 × 10^5 tonnes of pelagic fish and 1.2 × 10^5 tonnes of demersal fish), respectively.