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축구선수들의 경기력 향상을 위한 트레이닝 방법 문헌고찰
이서민 ( Rui-min Li ),조영현 ( Yeong-hyun Cho ),유주인 ( Joo-in Yu ),유붕 ( Peng Liu ),사공혁 ( Hyuk Sakong ),박영준 ( Young-jun Park ),한누리 ( Nu-ri Han ),서태범 ( Tae-beom Seo ) 제주대학교 해양스포츠센터 2020 해양스포츠연구 Vol.10 No.2
본 연구의 목적은 축구선수의 경기력 향상을 위한 트레이닝 방법을 확인하고자 하는데 있다. 이를 위해 온라인(Online) 상에서 Pubmed, Riss, Kiss, Google scholar에서 2000~2020년 사이의 기간을 설정하고, 용어는 Training, Performance, soccer player, core training 그리고 Plyometric training을 사용하여 문헌 조사를 실시하였다. 축구선수의 경기력관련 체력요인 향상을 위한 훈련 프로그램의 효과를 보고한 20개의 논문을 선정하였고, 플라이오메트릭과 코어트레이닝 각각 5개씩 10개의 논문이 최종 채택되었다. 채택한 문헌을 기반으로 내용을 정리한 결과 플라이오메트릭과 코어트레이닝은 근력, 근지구력, 민첩성, 순발력, 허리와 무릎 등속성 근기능 및 유연성을 증가시키는 것으로 확인되었다. 따라서 플라이오메트릭과 코어트레이닝의 적용은 축구선수의 경기력 관련 체력을 향상시킨다는 중요한 정보를 제공한다. The purpose of this study is to identify a training method for improving soccer player's performance. To this end, the period between 2000 and 2020 was set in Pubmed, Riss, Kiss, and Google scholar on Online, and a literature survey was conducted using the terms Training, Performance, soccer player, core training and Plyometric training. Twenty academic journals were selected to report the effectiveness of training programs to improve the fitness factors related to the performance of soccer players, and ten papers were finally selected, five each for plyometric and core training. As a result of organizing the contents based on the adopted literature, it was confirmed that plyometric and core training increased muscle strength, muscular endurance, agility, power, waist and knee isokinetic muscle function and flexibility. Therefore, these results provide information that plyometric and core training may improve physical fitness related to the performance of soccer players.
Model Checking of Non-Centralized Automaton Web Service with AMT Bounded Constraint
Zhang Rui-Min,Li Xiao-Bin 보안공학연구지원센터 2016 International Journal of Multimedia and Ubiquitous Vol.11 No.3
In view of the web service model checking application, the combination mode of traditional finite state machines cannot guarantee the correctness of Web composite service. A web service model diction algorithm of non-centralized automaton based on satisfiability modulo theories (SMT) is proposed. First, SMT is used for bounded model checking of time automaton, and the time automaton model is directly converted into logical formula that can be identified by SMT, to make solution; secondly, the proposed SMT time automaton theory is used to achieve the employee travel arrangements web services for modeling and verification; finally, through an example analysis, the effectiveness of the algorithm on the termination of the path deadlock and the optimization of network parameters.
Rui Yan,Jianbo Song,Zhifang Wu,Min Guo,Jianzhong Liu,Jianguo Li,Xinzhong Hao,Sijin Li 대한영상의학회 2015 Korean Journal of Radiology Vol.16 No.4
To determine the efficacy of 18F-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) in the detection of radiation-induced myocardial damage in beagles by comparing two pre-scan preparation protocols as well as to determine the correlation between abnormal myocardial FDG uptake and pathological findings. The anterior myocardium of 12 beagles received radiotherapy locally with a single X-ray dose of 20 Gy. 18F-FDG cardiac PET/CT was performed at baseline and 3 months after radiation. Twelve beagles underwent two protocols before PET/CT: 12 hours of fasting (12H-F), 12H-F followed by a high-fat diet (F-HFD). Regions of interest were drawn on the irradiation and the non-irradiation fields to obtain their maximal standardized uptake values (SUVmax). Then the ratio of the SUV of the irradiation to the non-irradiation fields (INR) was computed. Histopathological changes were identified by light and electron microscopy. Using the 12H-F protocol, the average INRs were 1.18 ± 0.10 and 1.41 ± 0.18 before and after irradiation, respectively (p = 0.021). Using the F-HFD protocol, the average INRs were 0.99 ± 0.15 and 2.54 ± 0.43, respectively (p < 0.001). High FDG uptake in irradiation field was detected in 33.3% (4/12) of 12H-F protocol and 83.3% (10/12) of F-HFD protocol in visual analysis, respectively (p = 0.031). The pathology of the irradiated myocardium showed obvious perivascular fibrosis and changes in mitochondrial vacuoles. High FDG uptake in an irradiated field may be related with radiation-induced myocardial damage resulting from microvascular damage and mitochondrial injury. An F-HFD preparation protocol used before obtaining PET/CT can improve the sensitivity of the detection of cardiotoxicity associated with radiotherapy.
Rui Deng,Shi-min Wang,Tao Yin,Ting-hong Ye,Guo-bo Shen, Ling Li,Jing-yi Zhao,Ya-xiong Sang,Xiao-gang Duan,Yu-Quan Wei 한국유방암학회 2014 Journal of breast cancer Vol.17 No.1
Purpose: The universal organic solvent dimethyl sulfoxide (DMSO)can be used as a differentiation inducer of many cancer cells andhas been widely used as a solvent in laboratories. However, itseffects on breast cancer cells are not well understood. The aimof this study is to investigate the effect and associated mechanismsof DMSO on mouse breast cancer. Methods: We appliedDMSO to observe the effect on tumors in a mouse breast cancermodel. Tumor-associated macrophages (TAMs) were tested byflow cytometry. Ex vivo tumor microenvironment was imitated by4T1 cultured cell conditioned medium. Enzyme-linked immunosorbentassays were performed to detect interleukin (IL)-10 andIL-12 expression in medium. To investigate the cytotoxicity ofDMSO on TAMs, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazoliumbromide (MTT) assays were performed. Results: We foundthat DMSO produced tumor retardation when injected into mouseperitoneal cavities in a certain concentration range (0.5–1.0 mg/g). Furthermore, as detected by flow cytometry, TAM subtypeswere found to be transformed. We further imitated a tumor microenvironmentin vitro by using 4T1 cultured cell conditionedmedium. Similarly, by using low concentration DMSO (1.0%–2.0% v/v), TAMs were induced to polarize to the classically activatedmacrophage (M1-type) and inhibited from polarizing intothe alternatively activated macrophage (M2-type) in the conditionedmedium. IL-10 expression in tumors was reduced, whileIL-12 was increased compared with the control. Furthermore, wereported that 2.0% (v/v) DMSO could lead to cytotoxicity in peritonealmacrophages after 48 hours in MTT assays. Conclusion:Our findings suggest that DMSO could exert antitumor effects in4T1 cancer-bearing mice by reversing TAM orientation and polarizationfrom M2- to M1-type TAMs. These data may providenovel insight into studying breast cancer immunotherapy.
Rui Wang,Pyo Lim,Lida Heng,Min Soo Kim,Sang Don Mun 대한기계학회 2016 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.30 No.10
Magnetic abrasive machining (MAM) is a machining technique in which magnetic fields are used to control abrasive tools during the machining process of a material. Due to the development of engineering technologies, various properties such as surface accuracy, dimensional accuracy, and lightweight materials are required in current engineering applications. This study proposes the development of a new ultra-high-speed magnetic abrasive machining technique with the goal of improving the dimensional accuracy, surface accuracy and weight of a material. Moreover, to reduce machining time, this machining method was developed using an ultra-high-speed spindle, capable of rotating up to 80000 rpm. In this study, Ti-6Al-4V (Eli) bars were used as cylindrical workpieces and were machined via magnetic abrasive machining processes with an ultra-high-speed spindle. Results showed that improvements in the diameter and quantity of removed material were the highest at an operational speed of 80000 rpm, followed by 40000 rpm, 20000 rpm and 2000 rpm. The initial surface roughness of 0.21 µm Ra was improved to 0.04 µm Ra at 80000 rpm for 75 seconds. To evaluate the machining capabilities of the ultra-high-speed MAM process in terms of surface roughness, a descriptive statistical method was used. Precision weight data, laser scan micrometer data, roundness data, surface roughness data, and AFM images of the machined surface were recorded and studied.