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Masaki Kubo,Takuya Hida,Ryosuke Nakajima,Toshiyuki Matsumoto 대한산업공학회 2019 Industrial Engineeering & Management Systems Vol.18 No.1
Many tasks are currently automated in the manufacturing field, but some are still performed by workers, which require technical knowledge and skills. However, it is difficult for a new worker to learn skills that require precise motion and extensive experience. Conventional on-the-job training (OJT) has a problem, which is the difficulty of defining and evaluating a correct task. Therefore, this study aimed to visualize the proper skills and their effects on quality in metallic painting operations, and to design the concept for a skill training system. Product quality depends on a worker’s motion and the effects of tools. To train a skill based on these factors, it is necessary to visualize the proper skill and to devise a method of training. Therefore, changes to a worker’s motion and the quality of products were visualized using a motion capture (MOCAP) system and three-dimensional computer graphics (3DCG) software. Furthermore, such a system requires a trainee to experience the proper motion and to evaluate his or her skills. The motion of two skilled workers was therefore analyzed to extract their skills as explicit knowledge. The skilled workers’ motion was measured using the MOCAP system. The obtained data were then analyzed as positional and rotational data in three axes for each motion of the main parts of the body. Consequently, 11 types of skills were extracted by analyzing the data. Then, an experiment was conducted to visualize the quality of the metallic painting operation using film thickness as an index. Seven factors for film thickness were extracted, and these were quantified in the experiment. Moreover, these factors were applied to 3DCG, and the film thickness was reproduced by simulation. As the result of a statistical test, the reproducibility of the film thickness was guaranteed in 3DCG. Based on the results, a training system was designed for to enable a new worker to learn the skill.
Comparison of anatomic and non-anatomic hepatic resection for hepatocellular carcinoma
Masaki Kaibori,Masanori Kon,Tomoki Kitawaki,Takayuki Kawaura,Kiyoshi Hasegawa,Noriyuki Kokudo,Shunichi Ariizumi,Toru Beppu,Hiroyuki Ishizu,Shoji Kubo,Toshiya Kamiyama,Hiroyuki Takamura,Tsuyoshi Kobaya 한국간담췌외과학회 2017 한국간담췌외과학회 학술대회지 Vol.2017 No.3
Masaki Kuwatani,Yoshimasa Kubota,Shuhei Kawahata,Kimitoshi Kubo,Kazumichi Kawakubo,Hiroshi Kawakami,Naoya Sakamoto 소화기인터벤션의학회 2018 Gastrointestinal Intervention Vol.7 No.1
A 69-year-old woman with jaundice was referred to our hospital. After a final diagnosis of pancreatic cancer with liver metastasis, we performed transpapillary biliary drainage with a covered self-expandable metal stent (SEMS). Three months later, we also placed an uncovered duodenal stent for duodenal stricture in a side-to-end fashion. Another month later, for biliary SEMS obstruction, we attempted a transpapillary approach. A duodenoscope was advanced and a guidewire was passed through the mesh of the duodenal stent into the bile duct with a flexible tip catheter, but the catheter was not. Thus, we exchanged the duodenoscope for a forward-viewing two-channel endoscope and used the left working channel with a flexible tip catheter. By adjusting the axis, we finally succeeded biliary cannulation and accomplished balloon cleaning for recanalization of the SEMS. This is the first case with successful biliary cannulation by combined use of a two-channel endoscope and a flexible tip catheter.
( Masaki Kuwatani ),( Hiroshi Kawakami ),( Yoko Abe ),( Shuhei Kawahata ),( Kazumichi Kawakubo ),( Kimitoshi Kubo ),( Naoya Sakamoto ) The Editorial Office of Gut and Liver 2015 Gut and Liver Vol.9 No.2
A 72-year-old man with jaundice by ampullary adenocarcinoma was treated at our hospital. For biliary decompression, a transpapillary, fully covered, self-expandable metal stent (FCSEMS) was deployed. Four days later, the patient developed acute cholangitis. Endoscopic carbon dioxide cholangiography revealed kinking of the common bile duct above the proximal end of the FCSEMS. A 7-F double-pigtail plastic stent was therefore placed through the FCSEMS to correct the kink, straightening the common bile duct (CBD) and improving cholangitis. This is the first report of a unique use of a double-pigtail plastic stent to correct CBD kinking. The placement of a double-pigtail plastic stent can correct CBD kinking, without requiring replacement or addition of a FCSEMS, and can lead to cost savings. (Gut Liver, 2015;9:251-252)
Masaki Kuwatani,Yoshimasa Kubota,Shuhei Kawahata,Kimitoshi Kubo,Kazumichi Kawakubo,Hiroshi Kawakami,Naoya Sakamoto 소화기인터벤션의학회 2018 International journal of gastrointestinal interven Vol.7 No.1
A 69-year-old woman with jaundice was referred to our hospital. After a final diagnosis of pancreatic cancer with liver metastasis, we performed transpapillary biliary drainage with a covered self-expandable metal stent (SEMS). Three months later, we also placed an uncovered duodenal stent for duodenal stricture in a side-to-end fashion. Another month later, for biliary SEMS obstruction, we attempted a transpapillary approach. A duodenoscope was advanced and a guidewire was passed through the mesh of the duodenal stent into the bile duct with a flexible tip catheter, but the catheter was not. Thus, we exchanged the duodenoscope for a forward-viewing two-channel endoscope and used the left working channel with a flexible tip catheter. By adjusting the axis, we finally succeeded biliary cannulation and accomplished balloon cleaning for recanalization of the SEMS. This is the first case with successful biliary cannulation by combined use of a two-channel endoscope and a flexible tip catheter.
Comparison of anatomic and non-anatomic hepatic resection for hepatocellular carcinoma
Kaibori, Masaki,Kon, Masanori,Kitawaki, Tomoki,Kawaura, Takayuki,Hasegawa, Kiyoshi,Kokudo, Norihiro,Ariizumi, Shunichi,Beppu, Toru,Ishizu, Hiroyuki,Kubo, Shoji,Kamiyama, Toshiya,Takamura, Hiroyuki,Kob Wiley (John WileySons) 2017 Journal of hepato-biliary-pancreatic sciences Vol.24 No.11
<P>ConclusionsAnatomic resection decreases the risk of tumor recurrence and improves OS in patients with a primary, solitary HCC of <5.0cm in diameter.</P>
Matsuo, Kiyomi,Murata, Tomoyuki,Koga, Takanori,Kubo, Atsuko,Yoshida, Yuichi,Karakawa, Yosuke,Kawaguchi, Hiroshi,Tanaka, Toru,Masaki, Jun,Taketomi, Toshikatsu,Kitajima, Takeo Rehabilitation Engineering And Assistive Technolog 2008 재활복지공학회논문지 Vol.2 No.1
In this paper, I will report the cases of children who are able to study at kindergarten or elementary school because they learned how to move by themselves using a moving aid before school age, and I will also discuss the development of a mobility device which allows severely disabled preschoolers to practice moving around by themselves safely and easily at home and institutions.
Yuji Takao,Takumi Atarashi,Takashi Kubo,Masaki Nagae,Tomoki Nakayama 한국대기환경학회 2019 Asian Journal of Atmospheric Environment (AJAE) Vol.13 No.4
Ambient aerosol particles at forest and suburban sites in western Japan were analyzed for imidazole compounds, such as 4 (5)-Methylimidazole (4-MI), 1-ethylimidazole (1-EI), 2-ethylimidazole (2-EI), and imidazole-2-carboxaldehyde (IC). The aerosols were collected on quartz fiber filters and extracted by the solid phase extraction method. The extract was analyzed by HPLC/Q-TOF-MS using an ion-pairing agent. The concentration of 4-MI in winter was higher than those in summer at the forest site; its concentration was highest among the analyzed imidazoles. The concentration of 4-MI in the suburban site was several times higher than the forest site. Anthropogenic activities, such as vehicle emissions, are considered to be the major source of 4-MI in this region.
Kiyomi Matsuo,Tomoyuki Murata,Takanori Koga,Atsuko Kubo,Yuichi Yoshida,Yosuke Karakawa,Hiroshi Kawaguchi,Toru Tanaka,Jun Masaki,Toshikatsu Taketomi,Takeo Kitajima 한국재활복지공학회 2008 재활복지공학회논문지 Vol.2 No.1
In this paper,I will report the cases of children who are able to study at kindergarten or elementary school because they learned how to move by themselves using a moving aid before school age, and I will also discuss the development of a mobility device which allows severely disabled preschoolers to practice moving around by themselves safely and easily at home and institutions.
Kiyorni Matsuo,Tornoyuki Murata,Takanori Koga,Atsuko Kubo,Yuichi Yoshida,Yosuke Karakawa,Hiroshi Kawaguchi,Toru Tanaka,Iun Masaki,Toshikatsu Taketomi,Takeo Kitajima 한국재활복지공학회 2009 재활복지공학회논문지 Vol.2 No.1
In this paper.I will report the cases of children who are able to study at kindergarten or elementary school because they learned how to move by themselves using a moving aid before school age, and I will also discuss the development of a mobility device which allows severely disabled preschoolers to practice moving around by themselves safely and easily at home and institutions.