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Evaluation of Operator Competence to Identify System Statein Conditioning Automated Processes
Yukio Horiguchi,Hiroaki Nakanishi,Tetsuo Sawaragi 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
This study investigates human works in conditioning an automated system interms of the engineers’ com-petence to identify the system state which enables the mtointervene in the automated processes at the right time and in the appropriate fashion. For this purpose, the conditional entropy of the engineers’ operation given the latent system state is utilized to evaluate one a spect of this ability from historical operational data. Computer-controlled multihead weigher(CCW) system is employed as the target domain for the skill analysis, and a comparative experiment was conducted in this work domain. Operational data acquired from engineers who have different levels of expertise are analyzed based on the hypothes is that the most proficien to peratr could successfully identify the actual system state from his available cues. The calculated indices indicate the skillful operator uses various operations for conditioning the system which are proper for the task requirement.
Localization Method of Space Robot with Two-Way Range under Uncertainties in Rotational Parameters
Sayaka Kanata,Hiroaki Nakanishi,Tetsuo Sawaragi 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
Our previous work[1] has presented a method of localization based on radio waves, useful for a roveron as mall planetary body, whose diameter is less than 1[km]. The important advantage of this method is thatit can apply to a roverons mall body, while conventional methods of localization can not apply to. This work assumed that parameter so frotational motion of investigating body are exactly known, however, it is difficult to determine these parameter sonremote planetary body in advance. In order to cope with uncertain tiesin rotational motion, are cursive method of localization has been introduced are cursive method of localization has been introduced by inflating the variance matrix of estmation error[2]. However, improvement in localization accuracy achieved by this method was limited. It is necessary to estimate rotation parameters to localizear over with sufficiently-high accuracy. This presentation provides an estimation strategy to localize a rover under some uncertainties in rotation paraemters. As moother-based method of estimation is proposed here for a roveron small planetary body. The idea is to collectlong-time observation data and use smoother-based approach. Estimation method has been derived in to optimization problem with constraints and variation method has been applied to solve it. Simulation results are shown to demonstrate localization accuracy of a rover and estimation accuracy of rotational parameters.
Masanori Furukawa,Akira Mitoro,Takahiro Ozutumi,Yukihisa Fujinaga,Keisuke Nakanishi,Koh Kitagawa,Soichiro Saikawa,Sinya Sato,Yasuhiko Sawada,Hiroaki Takaya,Kosuke Kaji,Hideto Kawaratani,Tadashi Namisa 대한소화기내시경학회 2021 Clinical Endoscopy Vol.54 No.3
Background/Aims: Endoscopic resection (ER) for superficial non-ampullary duodenal epithelial tumors (SNADETs) is challenging. Conventional endoscopic mucosal resection (CEMR) is also problematic due to the anatomical features of the duodenum. Wecompared the safety and efficacy of underwater endoscopic mucosal resection (UEMR) with those of CEMR through a retrospectiveanalysis. Methods: Altogether, 44 consecutive patients with 46 SNADETs underwent ER (18 CEMR cases and 28 UEMR cases) betweenJanuary 2016 and October 2019. We investigated the proportions of en bloc resection, R0 resection, complications, resection time,and total procedure time and compared the outcomes of patients from the CEMR group with those of patients from the UEMRgroup. Results: The median tumor size was 8.0 mm (range, 2.0–20.0 mm). The UEMR group showed a higher proportion of en blocresection (96.4% vs. 72.2%, p<0.05) and significantly lower median resection time and total procedure time (4 min vs. 9.5 min,p<0.05 and 13 min vs. 19 min, p<0.05; respectively) than the CEMR group. No complications were observed. However, two patientstreated with piecemeal resection in the CEMR group had residual tumors. Conclusions: UEMR is a feasible therapeutic option for SNADETs. It can be recommended as a standard treatment.
Risk Factors for Complications after Reconstructive Surgery for Sternal Wound Infection
Hashimoto, Ichiro,Takaku, Mitsuru,Matsuo, Shinji,Abe, Yoshiro,Harada, Hiroshi,Nagae, Hiroaki,Fujioka, Yusuke,Anraku, Kuniaki,Inagawa, Kiichi,Nakanishi, Hideki Korean Society of Plastic and Reconstructive Surge 2014 Archives of Plastic Surgery Vol.41 No.3
Background Although the utility of flaps for the treatment of sternal wound infections following median sternotomy has been reported for 30 years, there have been few reports on the risk factors for complications after reconstruction. The objective of this investigation was to identify factors related to complications after the reconstruction of sternal wound infections. Methods A retrospective analysis of 74 patients with reconstructive surgery after sternal wound infection over a 5-year period was performed. Clinical data including age, sex, body mass index (BMI), comorbidities, bacterial culture, previous cardiac surgery, wound depth, mortality rate, type of reconstructive procedure, and complication rate were collected. Results The patients' BMI ranged from 15.2 to $33.6kg/m^2$ (mean, $23.1{\pm}3.74kg/m^2$). Wound closure complications after reconstructive surgery were observed in 36.5% of the cases. The mortality rate was 2.7%. Diabetes mellitus significantly affected the rate of wound closure complications (P=0.041). A significant difference in the number of complications was seen between Staphylococcus aureus (S. aureus) and coagulase-negative Staphylococci (P=0.011). There was a correlation between harvesting of the internal thoracic artery and postoperative complications (P=0.048). The complication rates of the pectoralis major flap, rectus abdominis flap, omentum flap, a combination of pectoralis major flap and rectus abdominis flap, and direct closure were 23.3%, 33.3%, 100%, 37.5%, and 35.7%, respectively. Conclusions Diabetes mellitus, S. aureus, harvesting of the internal thoracic artery, and omentum flap were significant factors for complications after reconstruction. The omentum flap volume may be related to the complications associated with the omentum flap transfer in the present study.
Risk Factors for Complications after Reconstructive Surgery for Sternal Wound Infection
Ichiro Hashimoto,Mitsuru Takaku,Shinji Matsuo,Yoshiro Abe,Hiroshi Harada,Hiroaki Nagae,Yusuke Fujioka,Kuniaki Anraku,Kiichi Inagawa,Hideki Nakanishi 대한성형외과학회 2014 Archives of Plastic Surgery Vol.41 No.3
Background: Although the utility of flaps for the treatment of sternal wound infections following median sternotomy has been reported for 30 years, there have been few reports on the risk factors for complications after reconstruction. The objective of this investigation was to identify factors related to complications after the reconstruction of sternal wound infections. Methods: A retrospective analysis of 74 patients with reconstructive surgery after sternal wound infection over a 5-year period was performed. Clinical data including age, sex, body mass index (BMI), comorbidities, bacterial culture, previous cardiac surgery, wound depth, mortality rate, type of reconstructive procedure, and complication rate were collected. Results: The patients’ BMI ranged from 15.2 to 33.6 kg/m2 (mean, 23.1±3.74 kg/m2). Wound closure complications after reconstructive surgery were observed in 36.5% of the cases. The mortality rate was 2.7%. Diabetes mellitus significantly affected the rate of wound closure complications (P=0.041). A significant difference in the number of complications was seen between Staphylococcus aureus (S. aureus) and coagulase-negative Staphylococci (P=0.011). There was a correlation between harvesting of the internal thoracic artery and postoperative complications (P=0.048). The complication rates of the pectoralis major flap, rectus abdominis flap, omentum flap, a combination of pectoralis major flap and rectus abdominis flap, and direct closure were 23.3%, 33.3%, 100%, 37.5%, and 35.7%, respectively. Conclusions: Diabetes mellitus, S. aureus, harvesting of the internal thoracic artery, and omentum flap were significant factors for complications after reconstruction. The omentum flap volume may be related to the complications associated with the omentum flap transfer in the present study.
Development of a Cloud Profiling FM-CW Radar at 95 GHz and its Performance
Toshiaki TAKANO,Yumiro SUGA,Ken-ichi AKITA,Youhei KAWAMURA,Kurt SAKAI,Hiroshi KUMAGAI,Hiroshi KUROIWA,Yuichi OHNO,Hiroaki Horie,Tamio TAKAMURA,Yuji NAKANISHI,Teruyuki NAKAJIMA 대한전자공학회 2003 ITC-CSCC :International Technical Conference on Ci Vol.2003 No.7