http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Recognition of Surrounding Environment for Electric Wheelchair Based on WideSeg
Yuki SAKAI,Yoshiki NAKAYAMA,Huimin LU,Yujie LI,Hyoungseop KIM 제어로봇시스템학회 2019 제어로봇시스템학회 국제학술대회 논문집 Vol.2019 No.10
At present, the aging population is growing in Japan. Along with that, the expectation for the utilization of welfare equipment is increasing. Electric wheelchair, a convenient transportation tool, is popularized rapidly. On the other hand, accidents have occurred, and the dangers for driving are pointed out. Therefore, it needs to improve accident factors, reduce accidents and improve the convenience of electric wheelchair by automation. Environmental recognition is necessary for the development of autonomous electric wheelchair. Environmental recognition includes self-position estimation, recognition of sidewalks, crosswalks and traffic lights, moving object prediction, etc. In order to solve these various problems, this paper examines the segmentation of sidewalks, crosswalks and traffic lights. We develop the WideSeg that is one of semantic segmentation algorithms applying convolutional neural networks (CNN).
Interface State and Coercivity in Nd-Fe-B/Dy Films
Jin Umezawa,Yoshiki Sakai,Kunihiro Koike,Daisuke Ogawa,Yoshiyuki Mizuno,Hiroaki Kato,Takamichi Miyazaki,Yasuo Ando 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.63 No.3
We fabricated a model interface system, which consised of a Nd2Fe14B layer with Dy overlayers,in order to study the relationship between the microstructure near the interface and the coercivity. The coercivity Hc of the 1-µm-thick Nd-Fe-B films with a Dy overlayer was enhanced by thermaldiffusion of Dy atoms from the film’s surface into the Nd-Fe-B layer. The Nd-Fe-B/Dy films annealedat 700℃ showed a significant increase in the Hc of up to about 17 kOe. The maximum increasein the value of the coercivity ΔHc of the annealed films with a Dy overlayer was approximately 13kOe. The XRD measurement suggested the existence of rare-earth oxides (NdO and Dy2O3) in theDy-coated films with high value of the ΔHc.
Yutaro Kanda,Kenichiro Kakutani,Yoshitada Sakai,Takashi Yurube,Yoshiki Takeoka,Kunihiko Miyazaki,Hiroki Ohnishi,Tomoya Matsuo,Masao Ryu,Naotoshi Kumagai,Kohei Kuroshima,Yoshiaki Hiranaka,Ryosuke Kurod 대한척추신경외과학회 2024 Neurospine Vol.21 No.1
Objective: To elucidate the patient characteristics and outcomes of emergency surgery for spinal metastases and identify risk factors for emergency surgery. Methods: We prospectively analyzed 216 patients with spinal metastases who underwent palliative surgery from 2015 to 2020. The Eastern Cooperative Oncology Group performance status, Barthel index, EuroQol-5 dimension (EQ5D), and neurological function were assessed at surgery and at 1, 3, and 6 months postoperatively. Multivariate analysis was performed to identify risk factors for emergency surgery. Results: In total, 146 patients underwent nonemergency surgery and 70 patients underwent emergency surgery within 48 hours of diagnosis of a surgical indication. After propensity score matching, we compared 61 patients each who underwent nonemergency and emergency surgery. Regardless of matching, the median performance status and the mean Barthel index and EQ5D score showed a tendency toward worse outcomes in the emergency than nonemergency group both preoperatively and 1 month postoperatively, although the surgery greatly improved these values in both groups. The median survival time tended to be shorter in the emergency than nonemergency group. The multivariate analysis showed that lesions located at T3–10 (p = 0.002; odds ratio [OR], 2.92; 95% confidence interval [CI], 1.48–5.75) and Frankel grades A–C (p < 0.001; OR, 4.91; 95% CI, 2.45–9.86) were independent risk factors for emergency surgery. Conclusion: Among patients with spinal metastases, preoperative and postoperative subjective health values and postoperative survival are poorer in emergency than nonemergency surgery. Close attention to patients with T3–10 metastases is required to avoid poor outcomes after emergency surgery.
Yoshihide Kanno,Tetsuya Ohira,Yoshihiro Harada,Shinsuke Koshita,Takahisa Ogawa,Hiroaki Kusunose,Yoshiki Koike,Taku Yamagata,Toshitaka Sakai,Kaori Masu,Keisuke Yonamine,Kazuaki Miyamoto,Megumi Tanaka,T 대한소화기내시경학회 2021 Clinical Endoscopy Vol.54 No.3
Background/Aims: The aim of this study was to evaluate the safety of sedation with propofol as an alternative to benzodiazepinedrugs in outpatient endoscopy. Methods: In this prospective study, examinees who underwent outpatient endoscopy under propofol sedation and submitted a nextdayquestionnaire with providing informed consent were evaluated. Periprocedural acute responses, late adverse events within 24hours, and examinee satisfaction were evaluated. Results: Among the 4,122 patients who received propofol in the 17,978 outpatient-based endoscopic examinations performedbetween November 2016 and March 2018, 2,305 eligible examinees (esophagogastroduodenoscopy for 1,340, endoscopicultrasonography for 945, and total colonoscopy for 20) were enrolled, and their responses to a questionnaire were analyzed. Themean propofol dose was 69.6±24.4 mg (range, 20–200 mg). Diazepam, midazolam, and/or pentazocine in combination withpropofol was administered to 146 examinees. Mild oxygen desaturation was observed in 59 examinees (2.6%); and mild bradycardia,in 2 (0.09%). Other severe reactions or late events did not occur. After eliminating 181 invalid responses, 97.7% (2,065/2,124) of thepatients desired propofol sedation in future examinations. Conclusions: Propofol sedation was found to be safe-without severe adverse events or accidents-for outpatient endoscopy on thebasis of the patients’ next-day self-evaluation. Given the high satisfaction level, propofol sedation might be an ideal tool for painlessendoscopic screening.