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Nakano, Yoshiharu,Ishiwata, Tetsuya,Yamaguchi, Satoshi,Toki, Masanori,Igarashi, Minoru,Usui, Yoshiharu,Miyamae, Hiroshi,Yamada, Yoichi,Yasuda, Heinosuke Korean Society of Photoscience 1999 Journal of Photosciences Vol.6 No.4
Various arylidene- or alkylidenemalononitriles are condensed with electrophilic ethylenes to obtain polycyanoaniline derivatives. All the anilines showed strong fluorescence and the fluorescence intensities was evaluated to the effect of substituents.
Comparison of FPGA-based Direct Torque Controllers for Permanent Magnet Synchronous Motors
Yoshiharu Utsumi,Nobukazu Hoshi,Kuniomi Oguchi 전력전자학회 2006 JOURNAL OF POWER ELECTRONICS Vol.6 No.2
This paper compares two types of direct torque controllers for permanent magnet synchronous motors(PMSMs). These controllers both use a single-chip FPGA(Field Programmable Gate Array) but have differing hardware configurations. One of the controllers was constructed by programming a soft-core CPU and hardware logic circuits written in VHDL(Very high speed IC Hardware Description Language), while the other was constructed of only hardware logic circuits.<br/> The characteristics of these two controllers were compared in this paper. The results show the controller constructed of only hardware logic circuits was able to shorten the control period and it was able to suppress the low torque ripple.
The Dimensions of the Scapula Glenoid in Japanese Rotator Cuff Tear Patients
Yoshiharu Shimozono,Ryuzo Arai,Shuichi Matsuda 대한정형외과학회 2017 Clinics in Orthopedic Surgery Vol.9 No.2
Background: Reverse total shoulder arthroplasty has become a widely accepted surgical procedure in Japan since the time when the implants were approved for use in 2014. There is a doubt, however, as to whether the implants designed for Western people are suitable for Japanese people, particularly for females of relatively small stature. The purpose of this study was to investigate the glenoid dimension, with special focus on the length after glenoid reaming, in Japanese rotator cuff tear patients. Methods: Fifty-six shoulders of 55 patients (35 males and 20 females; mean age, 63.8 years) were studied. Using the three-dimensional computed tomography images of the entire scapula before shoulder surgery, we measured the glenoid height and width, and calculated the correlation between these measurements and the patient’s height. Further, we measured the anteroposterior length of the scapular neck at the subchondral bone and the length at 15 mm medial to the subchondral bone, to simulate both the glenoid width after reaming (width of the ‘virtual reamed surface’) and the space available for the end of the center post of a standard glenoid baseplate. Results: The average glenoid height and width were 35.8 mm and 28.1 mm in males and 30.8 mm and 23.4 mm in females, respectively. There was a significant correlation between patient height and glenoid size (glenoid height, r = 0.69; width, r = 0.75; p < 0.01). The mean value of the width of the virtual reamed surface was 27.0 mm in males and 22.5 mm in females. The mean anteroposterior length at 15 mm medial to the subchondral bone was 12.4 mm in males and 9.5 mm in females; the length was shorter than 8 mm in 6 female shoulders. Conclusions: There was a significant correlation between patient height and glenoid size. Considering that the common diameter of the commercially available baseplates and their center posts is greater than 25 mm and 8 mm, respectively, these prosthetic parts would be too large, especially for the Japanese female glenoid. Given that the current results of Japanese shoulder dimensions are similar to those of Asian people, ‘Asian size implants’ should be developed.
Interior Noise Characteristics in Japanese, Korean and Chinese Subways
Yoshiharu Soeta,Ryota Shimokura,Jin Yong Jeon,Pyoung Jik Lee 한국철도학회 2013 International Journal of Railway Vol.6 No.3
The aim of this study was to clarify the characteristics of interior noise in Japanese, Korean, and Chinese subways. The octave-band noise levels, A-weighted equivalent continuous sound pressure level (LAeq) and parameters extracted from interaural cross-correlation/autocorrelation functions (ACF/IACFs) were analyzed to evaluate the noise inside running train cars quantitatively and qualitatively. The average LAeq was 72-83 dBA. The IACF/ACF parameters of the noise showed variations in their values, suggesting they are affected by the characteristics of the trains running, wheel-rail interaction, and cross-section of the tunnels.