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Risa Ebina-Shibuya,Nobuyuki Horita,Ho Namkoong,Takeshi Kaneko 대한백신학회 2020 Clinical and Experimental Vaccine Research Vol.9 No.2
An exciting debate has emerged whether bacille Calmette-Guérin (BCG) vaccination is effective for the coronavirus disease 2019 (COVID-19) pandemic. Some advocated that BCG-vaccinated people are less suffered from the virus because BCG vaccination is recommendedin COVID-19 high burden countries. However, the others objected because this seemingly attractive relationship is explainable with confounding factors. In a multiple regression with 171 countries adjusting socioeconomical and climatic covariates, countries with current universal pediatric BCG policy were associated with 30-fold (95% confidence interval, 17–52) decrease of COVID-19 mortality per population compared to countries without the policy.
한국인일본어학습자의 평가방법에 대한 인식의 일례 - 학습자참가형평가 실시를 위한 앙케이트 결과에서 -
에비나미유키 ( Ebina Miyuki ) 한국일어일문학회 2021 日語日文學硏究 Vol.119 No.-
일본어수업에 학습자참가형 평가를 도입하면, 교사는 학습자의 성취수준을 파악하고 학습자는 수강하는 수업의 목표에 도달하기 위하여 자신의 학습에 관심을 가질 수 있게 된다. 또한 평가과정에서도 교사나 학습자의 상호작용을 통하여 학습자의 학습이 촉진된다. 본고에서는 수업에서 학습자참가형 평가를 도입하기 위한 준비단계로써 한국소재 대학의 교양일본어수업 수강생에게 설문조사를 실시하였다. 학습자는 활동적인 수업과 평가에 대한 경험이 있으며, 수업을 통하여 일본어회화 실력과 의사소통 능력 향상을 목표로 하는 경우가 많았다. 또한 ‘평가’는 ‘교수(평가주체)'가 ‘운용능력(평가내용)’를 ‘필기 및 실기시험(평가방법)'으로 하기를 원하며, 평가기준도 ’교수‘가 작성하기를 원한다. ‘평가’에 대해서는 ‘교수가 성적부여를 위한 수단’으로 파악하고 있었다. 이를 바탕으로 학습자참가형 평가를 비롯한 교수자와 학습자 간의 상호평가의 의의를 고찰하였다. 수업에서의 학습자참가형 평가와 상호평가의 도입으로 한국인 일본어학습자의 효과적인 자기주도학습력 향상에 도움이 될 것으로 기대된다. By introducing learner-participating assessment into Japanese classes, teachers can grasp the learner's achievement in order to achieve the goals of the lessons they are taking, and learners can be interested in their own learning. In addition, students' learning ability will be promoted through the interaction of teachers and learners during the assessment process. This study conducted a survey of Japanese language students at Korean universities as a preparatory step for the introduction of student participation assessment. The results show that learners have active lessons and assessment experience, and that they often aim to improve their Japanese conversation and communication skills through lessons. In addition, "assessment" is expected to be evaluated by "professors" as "paper and performance tests" and "professors" as criteria for assessment. As for assessment, learners understood that professors were a means of grading. Based on this, the significance of mutual assessment between professors and learners, such as learner participation assessment, is examined. It is expected that the introduction of participation assessment and mutual assessment in the course will help Korean Japanese learners improve their self-directed learning skills.
Kataoka, Nobuyuki,Ebina, Kazuhito,Ueba, Masazumi 통신위성우주산업연구회 2001 Joint Conference on Satellite Communications Vol.2001 No.-
In conventional geostationary mobile satellite communication systems, users may experience bad quality of service due to a large propagation delay, which is caused by the double-hop connection link. In a double-hop link, a signal is passed through the satellite twice and the base station once before reaching its destination. To reduce the propagation delay, it is necessary to have single-hop connection link that connects user terminals directly by passing through the satellite only once. The single-hop connection method proposed in this paper uses a through repeater satellite to which future services can be accommodated. The method uses a newly developed common control channel to send the signaling messages to users during the single-hop connection. We evaluate its performance and show its feasibility.
An effective kinetic model with a threshold length in a finite volume system
Tadaomi Furuta,Kuniyoshi Ebina 한국물리학회 2005 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.46 No.3
In this paper, we introduce an eective kinetic model for the linear polymerization of cytoskeletal laments with a threshold length in a nite-volume system in order to show the importance of a threshold length in the nucleation phase and to understand the kinetic constant accurately. We analyze this model numerically for several concentrations and found some kind of shifted peak in the length distribution of linear polymers that were longer than the threshold length. We also found that the average length of laments in this model depended on the threshold length exponentially and that the peaks relaxed with time. These suggest that nucleation is a critical factor in cellular phenomena.
( Keiko Saotome ),( Wataru Yamagami ),( Hiroko Machida ),( Yasuhiko Ebina ),( Yoichi Kobayashi ),( Tsutomu Tabata ),( Masanori Kaneuchi ),( Satoru Nagase ),( Takayuki Enomoto ),( Daisuke Aoki ),( Miki 대한산부인과학회 2021 Obstetrics & Gynecology Science Vol.64 No.1
Objective Regional lymph node (LN) dissection is a standard surgical procedure for endometrial cancer, but there is currently no clear consensus on its therapeutic significance. We aimed to determine the impact of regional LN dissection on the outcome of endometrial cancer. Methods Study subjects comprised 36,813 patients who were registered in the gynecological tumor registry of the Japan Society of Obstetrics and Gynecology, had undergone initial surgery for endometrial cancer between 2004 and 2011, and whose clinicopathological factors and prognosis were appropriate for our investigation. The following clinicopathological factors were obtained from the registry: age, surgical stage classification, Union for International Cancer Control tumor, node, metastasis classification, histological type, histological differentiation, presence or absence of LN dissection, and postoperative treatment. We retrospectively analyzed the clinicopathological factors and therapeutic outcomes for patients with endometrial cancer. Results Analysis of all subjects showed that the group that underwent LN dissection had a significantly better overall survival than the group that did not undergo dissection. Analysis based on stage showed similar results across groups, except for stage Ia. Analysis based on stage and histological type showed similar results across groups, except for stage Ia endometrial carcinoma G1 or Ia G2. Multivariate analysis of prognostic factors indicated that LN dissection is an independent prognostic factor and that it has a greater impact on prognosis than adjuvant chemotherapy. Conclusion Despite the limitations of a retrospective study with some biases, the results suggest that LN dissection in endometrial cancer has a prognostic effect.