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Development of a Test Method for Walking Trolleys with an Assist Function
Koji Matsumoto,Yoichi Asano,Hiroyuki Jinbo 제어로봇시스템학회 2019 제어로봇시스템학회 국제학술대회 논문집 Vol.2019 No.10
Walking trolleys that are currently being manufactured have a function that prevents downslope movement when the user crosses a slope. In this study, we have developed a test method to evaluate this function. First, we measured the handle-operating force exerted by elderly persons when crossing a slope by carrying out an experiment with 17 elderly participants. Analysis of the results indicated that the handle-operating force was 28 N. Based on these results, we developed a test method and a test equipment. Furthermore, we used the test equipment to conduct experiments on walking trolleys with and without activating the assist function to validate the test method. It was found that the proposed test can be performed with sufficient accuracy.
Response to Assist Torque Failure of Physical-Assistant Robots
Yoichi Asano,Koji Matsumoto,Hiroyuki Jinbo 제어로봇시스템학회 2017 제어로봇시스템학회 국제학술대회 논문집 Vol.2017 No.10
In physical assistant robots used to mitigate burden on the lumbar, there is a risk that if the assist torque is lost, excessive burden may be applied to the lumbar. Therefore, for some products, a system to lock the moving parts on the lumbar is examined as a prevention measure against this risk. Through an experiment on a subject who wears test equipment that simulates a physical-assistant robot, the myogenic potential at the lumbar when the assist torque was lost was measured. Results indicated that if the moving part is locked within 151 msec after the loss of assist torque, the load of the lifted baggage can be supported by the frame of the robot and thus the burden on the user can be mitigated.
Lymphadenectomy issues in endometrial cancer
Yosuke Konno,Hiroshi Asano,Ayumi Shikama,Daisuke Aoki,Michihiro Tanikawa,Akinori Oki,Koji Horie,Akira Mitsuhashi,Akira Kikuchi,Hideki Tokunaga,Yasuhisa Terao,Toyomi Satoh,Kimio Ushijima,Mitsuya Ishika 대한부인종양학회 2021 Journal of Gynecologic Oncology Vol.32 No.2
Objectives: This review aims to introduce preoperative scoring systems to predict lymphnode metastasis (LNM) and ongoing clinical trials to investigate the therapeutic role oflymphadenectomy for endometrial cancer. Methods: We summarized previous reports on the preoperative prediction models forLNM and evaluated their validity to omit lymphadenectomy in our recent cohorts. Next, wecompared characteristics of two ongoing lymphadenectomy trials (JCOG1412, ECLAT) toexamine the survival benefit of lymphadenectomy in endometrial cancer, and described thedetails of JCOG1412. Results: Lymphadenectomy has been omitted for 64 endometrial cancer patients who met low risk criteria to omit lymphadenectomy using our scoring system (LNM score) and no lymphaticfailure has been observed. Other two models also produced comparable results. Two randomizedphase III trials to evaluate survival benefit of lymphadenectomy are ongoing for endometrialcancer. JCOG1412 compares pelvic lymphadenectomy alone with pelvic and para-aorticlymphadenectomy to evaluate the therapeutic role of para-aortic lymphadenectomy for patients atrisk of LNM. For quality assurance of lymphadenectomy, we defined several regulations, includinglower limit of the number of resected nodes, and submission of photos of dissected area toevaluate thoroughness of lymphadenectomy in the protocol. The latest monitoring report showedthat the quality of lymphadenectomy has been well-controlled in JCOG1412. Conclusion: Our strategy seems reasonable to omit lymphadenectomy and could begeneralized in clinical practice. JCOG1412 is a high-quality lymphadenectomy trial in terms ofthe quality of surgical procedures, which would draw the bona-fide conclusions regarding thetherapeutic role of lymphadenectomy for endometrial cancer.
Spase Shumka,Yukio Nagahama,Sarjmir Hoxha,Koji Asano 한국수산과학회 2023 Fisheries and Aquatic Sciences Vol.26 No.4
Beside that the fish species and their sub-populations are highly important as a keystone species in the coastal and marine ecosystem, there are very few studies on their presence, distribution and temporal variations within and around the lagoon ecosystems in Albania. This paper provides an updated review on the life cycle, fishery, exploitation state and management of the main species that are subject of commercial fishing in the Karavasta lagoon, southeastern Adriatic coast of Albania. Due to the fact that lagoons represent a continuum between continental and marine aquatic ecosystems they play a crucial role in species life cycles. Further on in the circumstances of rapid utilizations and environmental changes, anomalies in salinity and temperatures, accelerated anthropogenic influences their rate of vulnerability is highly increased. Following the requirements of the Water Framework Directive, transitional water, coastal lagoons and estuaries there is a need for urgent monitoring and management approaches. The commercial species include: European eel (Anguilla anguilla), species of Family Mugilidae (Mugil cephalus, Liza ramada, Liza salienes and Chelon labrosus), Seabream (Sparus aurata), Seabass (Dincentrarchus labrax), etc. Fish productivity is oscillating from maximum value of 61.95 kg/ha is recorded in period of 1975–80 and lower value of 31 kg/ha in year 2020. Our study highlights importance of fish and fishery long-term monitoring, and contributes to understand the driving factors in productivity, migration patterns and species ecology in the vital coastal ecosystems.
Yohei Okada,Chiharu Shibamoto,Yukari Osumi,Chihiro Asano,Riho Takeuchi,Sachio Nabeshima,Shu Morioka,Koji Shomoto 대한파킨슨병및이상운동질환학회 2018 Journal Of Movement Disorders Vol.11 No.2
We present a 47-year-old right-handed woman with a 15-year history of writer's cramp provided with six sessions of cathodal transcranial direct current stimulation (tDCS) combined with her observation of the writing actions performed by a healthy subject plus electromyographic (EMG) biofeedback training to decrease EMG activities of her right forehand muscles during writing for 30 min, 1 or 2/week for 4 weeks. She showed the improvement of dystonic posture and writing speed while writing after the intervention. The writing movement and writing speed scores on a writer's cramp rating scale and writing time decreased. Our findings demonstrated that cathodal tDCS combined with action observation and EMG biofeedback training might improve dystonic writing movements in a writer's cramp patient.