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- 저자 : Shingo Kuroda (검색결과 5 건)
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A Proposal of Refactoring toWell-StructuredWorkflow Nets
Yuki Kuroda,Shingo Yamaguchi,Minoru Tanaka 대한전자공학회 2009 ITC-CSCC :International Technical Conference on Ci Vol.2009 No.7
In this paper, we discuss refactoring free choice workflow nets (WF-net for short) to well-structured ones. It is known that most actual workflows can be modeled as free choice or well-strcutured WF-nets. There are more analysis methods for well-structured WF-nets. Refactoring free choice WF-nets to well-structured ones enables us to apply many analysis methods to free choice ones. We propose two rules for the refactoring. And we show an example of refactroing a WF-net, which represents the actual workflow for an travel agency.
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A Problem and Its Solution for Multi-Car Elevator Group Control
Yuki Kuroda,Mitsuru Nakata,Shingo Yamaguchi 대한전자공학회 2008 ITC-CSCC :International Technical Conference on Ci Vol.2008 No.7
Multi-car elevator (MCE for short) systems have been receiving increasing attention these days. An MCE has two or more cars in one shaft. It is difficult to control MCEs by using algorithms developed for single-car elevator systems, because MCEs need to avoid collision of the cars of the same shaft. In this paper, we propose an algorithm to control MCE systems, and show the effectiveness of our algorithm through computer simulation.
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Tanaka, Eiji,Yamano, Eizo,Inubushi, Toshihiro,Kuroda, Shingo The Korean Association Of Orthodontists 2012 대한치과교정학회지 Vol.42 No.3
This article reports the orthodontic treatment of a patient with skeletal mandibular retrusion and an anterior open bite due to temporomandibular joint osteoarthritis (TMJ-OA) using miniscrew anchorage. A 46-year-old woman had a Class II malocclusion with a retropositioned mandible. Her overjet and overbite were 7.0 mm and -1.6 mm, respectively. She had limited mouth opening, TMJ sounds, and pain. Condylar resorption was observed in both TMJs. Her TMJ pain was reduced by splint therapy, and then orthodontic treatment was initiated. Titanium miniscrews were placed at the posterior maxilla to intrude the molars. After 2 years and 7 months of orthodontic treatment, an acceptable occlusion was achieved without any recurrence of TMJ symptoms. The retropositioned mandible was considerably improved, and the lips showed less tension upon lip closure. The maxillary molars were intruded by 1.5 mm, and the mandible was subsequently rotated counterclockwise. Magnetic resonance imaging of both condyles after treatment showed avascular necrosis-like structures. During a 2-year retention period, an acceptable occlusion was maintained without recurrence of the open bite. In conclusion, correction of open bite and clockwise-rotated mandible through molar intrusion using titanium miniscrews is effective for the management of TMJ-OA with jaw deformity.
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Eiji Tanaka,Eizo Yamano,Toshihiro Inubushi,Shingo Kuroda 대한치과교정학회 2012 대한치과교정학회지 Vol.42 No.3
This article reports the orthodontic treatment of a patient with skeletal mandibular retrusion and an anterior open bite due to temporomandibular joint osteoarthritis (TMJ-OA) using miniscrew anchorage. A 46-year-old woman had a Class II malocclusion with a retropositioned mandible. Her overjet and overbite were 7.0 mm and -1.6 mm, respectively. She had limited mouth opening, TMJ sounds, and pain. Condylar resorption was observed in both TMJs. Her TMJ pain was reduced by splint therapy, and then orthodontic treatment was initiated. Titanium miniscrews were placed at the posterior maxilla to intrude the molars. After 2 years and 7 months of orthodontic treatment, an acceptable occlusion was achieved without any recurrence of TMJ symptoms. The retropositioned andible was considerably improved, and the lips showed less tension upon lip losure. The maxillary molars were intruded by 1.5 mm, and the mandible was bsequently rotated counterclockwise. Magnetic resonance imaging of both ondyles after treatment showed avascular necrosis-like structures. During a -year retention period, an acceptable occlusion was maintained without recurrence of the open bite. In conclusion, correction of open bite and clockwiserotated mandible through molar intrusion using titanium miniscrews is eff ective for the management of TMJ-OA with jaw deformity. [Korean J Orthod 2012;42(3):144-154]
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Accurate and Easy Measurement of Sliding Distance of Intramedullary Nail in Trochanteric Fracture
Nobuaki Chinzei,Takafumi Hiranaka,Takahiro Niikura,Takaaki Fujishiro,Shinya Hayashi,Noriyuki Kanzaki,Shingo Hashimoto,Yoshitada Sakai,Ryosuke Kuroda,Masahiro Kurosaka 대한정형외과학회 2015 Clinics in Orthopedic Surgery Vol.7 No.2
In daily clinical practice, it is essential to properly evaluate the postoperative sliding distance of various femoral head fixation devices (HFD) for trochanteric fractures. Although it is necessary to develop an accurate and reproducible method that is unaffected by inconsistent postoperative limb position on radiography, few studies have examined which method is optimal. Therefore, the purpose of this study is to prospectively compare the accuracy and reproducibility of our four original methods in the measurement of sliding distance of the HFD. Methods: Radiographs of plastic simulated bone implanted with Japanese proximal femoral nail antirotation were taken in five limb postures: neutral, flexion, minute internal rotation, greater external rotation, and flexion with external rotation. Orthopedic surgeons performed five measurements of the sliding distance of the HFD in each of the flowing four methods: nail axis reference (NAR), modified NAR, inner edge reference, and nail tip reference. We also assessed two clinical cases by using these methods and evaluated the intraclass correlation coefficients. Results: The measured values were consistent in the NAR method regardless of limb posture, with an even smaller error when using the modified NAR method. The standard deviation (SD) was high in the nail tip reference method and extremely low in the modified NAR method. In the two clinical cases, the SD was the lowest in the modified NAR method, similar to the results using plastic simulated bone. The intraclass correlation coefficients showed the highest value in the modified NAR method. Conclusions: We conclude that the modified NAR method should be the most recommended based on its accuracy, reproducibility, and usefulness.
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