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Expansion of simulator of pressure control system for air-conditioning system
Yu Fukuhara,Nobuhiro Tanaka,Takayuki Miyake,Shigeyuki Tateno,Hisayoshi Matsuyama 제어로봇시스템학회 2008 제어로봇시스템학회 국제학술대회 논문집 Vol.2008 No.10
It is necessary to manage room pressure strictly in order to prevent air flowing from outside for maintenance of products quality in clean rooms. A local exhaust system is installed in a special environment in which poisonous substances are handled to prevent the contamination. The reversal of pressure is not allowed under any situation as for such the special environment while usual air-conditioning operation is done. However, it is difficult to express room pressure changes of the air-conditioning system because present simulators do not have functions for expression of presser propagation. In this research, a dynamic simulator of pressure control with MATLAB is expanded in order to adapt to the more large-scale actual air-conditioning system. In addition, actual problems of the room pressure changes can be simulated successfully.
Study of a Suitable Structure of Dynamically Reconfigurable VLD Circuit for MP3 Decoding
Kiyotaka Komoku,Takashi Miyake,Takayuki Morishita,Nobuo Sasaki 대한전자공학회 2009 ITC-CSCC :International Technical Conference on Ci Vol.2009 No.7
We have been proposed a VLD architecture that includes many comparators and can reconfigure the circuit structure adaptively, corresponding to VLC table number. For analyzing performance of the circuit, a functional simulation program of the proposed VLD circuit was developed. In this paper, we show the output result of the simulation program.
Atsushi Otsuka,Takahisa Suzuki,Yuto Matsushita,Hiromitsu Watanabe,Keita Tamura,Daisuke Motoyama,Toshiki Ito,Takayuki Sugiyama,Hideaki Miyake 대한배뇨장애요실금학회 2019 International Neurourology Journal Vol.23 No.4
Purpose: To evaluate whether hydrodistention with fulguration of Hunner lesions (HD/FUL) plus maintenance dimethyl sulfoxide (DMSO) therapy prolongs the recurrence-free time in patients with Hunner type interstitial cystitis (IC). Methods: The study enrolled patients with Hunner type IC who required repeat HD/FUL due to recurrence of IC symptoms after the first HD/FUL at our institution. All patients received a second HD/FUL plus maintenance DMSO therapy. The maintenance DMSO therapy was performed every 2 weeks for a total of 8 instillations, and then once every 4 weeks thereafter. The recurrencefree time from HD/FUL to therapeutic failure was estimated using the Kaplan-Meier method. The recurrence-free time between the first HD/FUL and second HD/FUL plus maintenance DMSO therapy was statistically compared using the log-rank test. Results: A total of 21 patients (mean age, 66.3±10.8 years) with Hunner type IC were evaluated. The recurrence-free time for the second HD/FUL plus maintenance DMSO therapy was significantly longer than that for the first HD/FUL (P<0.0001). The median recurrence-free time for the first HD/FUL was 10.1 months, while that for the second HD/FUL plus maintenance DMSO therapy has yet to be reached. The recurrence-free rate for the first HD/FUL was 81.0% at 6 months, 38.1% at 1 year, 9.5% at 2 years, and 4.8% at 3 years. In contrast, the rate for the second HD/FUL plus maintenance DMSO therapy was 100% at 6 months, 94.7% at 1 year, 82.6% at 2 years, and 82.6% at 3 years. There were no significant differences in efficacy between the first and second HD/FUL. Conclusions: HD/FUL plus maintenance DMSO therapy clearly prolongs the recurrence-free time compared with HD/FUL alone in Hunner type IC.