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김창희,임병묵,박해모,정명수,황귀서,신용철,고성규,장보형,이해웅,이영준,신헌태,박선주,현민경,이상재,Kim, Changhee,Lim, Byungmook,Park, Haemo,Jung, Myungsu,Hwang, Guiseo,Shin, Yongchul,Go, Sunggyu,Jang, Bohyung,Lee, Haewoong,Lee, Youngjun,Shin, 대한예방한의학회 2015 대한예방한의학회지 Vol.19 No.1
Objective : This study aimed to develop a new category system of Yanseng(養生) for traditional Korean Medicine in order to prepare the ground for organizing the resources of Yangseng systematically. Method : We reviewed the existing medical books containing Yangseng contents. Based on the experts' consensus, we drew the new category system of Yangseng in consideration of a national trait of Korea and use of Yanseng in modern society. Results : First, We devided Yangseng category into two parts: methods and applications. Methods are divided into 5 parts: mind, diet, herb, Doinangyo(導引按蹻), life. A broad use of herbs in daily life is a national trait of Korea. Doinangyo contains relaxation methods like breathing, massages and exercises like Qigong and is also very popular way to maintain health in modern western society. Applications are divided into 6 parts: type of constitution, life cycle, seasons, type of symptoms and signs, type of Mibyung(未病) and diseases. We drew this 6 parts in consideration of use in the field of health care. Conclusion : The new category system of yangseng is based on existing theories and reflects Korean national trait and use of Yanseng in modern society. We hope this new category system play a role of foundation for organizing the resources of Yangseng systematically.
자율주행 경로 추종 성능 개선을 위한 차량 조향 시스템 특성 분석
김창희,이동필,이경수,Kim, Changhee,Lee, Dongpil,Yi, Kyongsu 한국자동차안전학회 2020 자동차안전학회지 Vol.12 No.2
This paper presents steering system requirements to ensure the stabilized lateral control of autonomous driving vehicles. The two main objectives of a lateral controller in autonomous vehicles are maintenance of vehicle stability and tracking of the desired path. Even if the desired steering angle is immediately determined by the upper level controller, the overall controller performance is greatly influenced by the specification of steering system actuators. Since one of the major inescapable traits that affects controller performance is the time delay of the steering actuator, our work is mainly focused on finding adequate parameters of high level control algorithm to compensate these response characteristics and guarantee vehicle stability. Actual vehicle steering angle response was obtained with Electric Power Steering (EPS) actuator test subject to various longitudinal velocity. Steering input and output response analysis was performed via MATLAB system identification toolbox. The use of system identification is advantageous since the transfer function of the system is conveniently obtained compared with methods that require actual mathematical modeling of the system. Simulation results of full vehicle model suggest that the obtained tuning parameter yields reduced oscillation and lateral error compared with other cases, thus enhancing path tracking performance.
소셜커머스 모바일 어플리케이션의 품질 개선 요인에 대한 분석
김창희(Changhee Kim),천민기(Min Ki Chon),김현정(Hyun Jung Kim) 한국SCM학회 2016 한국SCM학회지 Vol.16 No.1
This study was conducted to analyze the quality of the social-commerce application, one of the fastest growing Mcommerce platforms in Korea. Refer to preceding research, this study classified seven categories of qualities of social-commerce mobile application ; product supply, provision of information, appearance, stability, convenience, ease of use, and enjoyment. In the empirical level, this study was conducted using Importance Performance Analysis through 17 factors of quality in social-commerce mobile application. This study found that customers are satisfied with the three service quality factors by IPA analysis; safety, product supply, and convenience. And customers have low importance and low satisfaction in the ease of use factor. Also, Customers does not emphasis on the Enjoyment factor. However, customers have low satisfaction relative to importance in provision of information factor. This study gives implication thorough analyzing the factors of quality for the fast growing social-commerce mobile application using IPA Matrix.
미토콘드리아 생합성 촉진을 통한 신선초와 홍삼 복합물의 운동수행능력 증가 효과
김창희(Changhee Kim),김미보(Mi-Bo Kim),이승호(Seung-Ho Lee),김예진(Ye-Jin Kim),황재관(Jae-Kwan Hwang) 한국식품과학회 2017 한국식품과학회지 Vol.49 No.6
극심한 스트레스, 서구화된 식습관, 불규칙한 생활리듬 등에 의한 부족한 신체활동은 체력을 약화시키고 비만, 당뇨, 고혈압, 우울증, 근감소증 등을 야기한다. 본 연구에서는 ARC가 운동능력 증진에 미치는 효능을 세포 및 동물실험을 통해 검증하였다. ARC를 처리함에 따라 근육 세포 내에서 p-AMPK와 SIRT1 단백질, PGC-1α, NFR1, TFAM mRNA 발현양과 미토콘드리아 양이 증가하였다. 세포실험에서 ARC는 RGE와 AE단독으로 처리에 비해 ATP 생성을 더 많이 하였으며, 동물실험에서도 RGE군과 AE군에 비해 ARC군에서 운동수행능력이 더 향상시켰다. 세포 실험과 마찬가지로 ARC는 동물의 근육 조직 내에서 미토콘드리아 생합성에 관련된 유전자의 발현을 증가시켰으며, 젖산 발생량 감소 및 산화스트레스 억제로 인해 운동으로 인한 피로를 쉽게 회복시켰다. 따라서, 신선초와 홍삼 복합물에 대한 인체수준에서 과학적인 증거 및 안전성이 확보될 경우, 운동수행능력 향상을 위한 기능성 소재로서의 산업적인 활용이 확대될 것으로 기대된다. Mitochondrial biogenesis-a process that leads to an increment in the number and density of mitochondria, improves physical performance and body health by enhancing exercise capacity. In the present study, we investigated the stimulatory effect of Ashitaba and red ginseng complex (ARC) on exercise capacity in L6 skeletal muscle cells and mice. In L6 skeletal muscle cells, ARC increased the mitochondrial contents and ATP production by activating AMP-activated protein kinase (AMPK), sirtuin 1 (SIRT1), and peroxisome proliferator-activated receptor gamma coactivator-1 alpha (PGC-1α) and up-regulating the mRNA expression of nuclear respiratory factor-1 (NRF-1) and mitochondrial transcription factor A (TFAM). In the animal experiments, mice treated with ARC showed an increment in exercise capacity as compared with mice treated with Ashitaba extract or red ginseng extract alone. These studies indicate that ARC might serve as a potential natural candidate for enhancing exercise capacity by stimulation of mitochondrial biogenesis.
김창희(Changhee Kim) 명지대학교 법학연구소 2024 명지법학 Vol.22 No.2
The subject of this study is that when an allegation is made regarding a document submitted as documentary evidence in a civil lawsuit that 'the holder of the title signed the document with blank space, and the other party fill in the blank without authority', which party must prove what content to overturn the presumption under Article 358 of the Civil Procedure Act. The Supreme Court rulings show three positions that conflict with each other. The first view is that the presumption of Article 358 is broken if sufficient counter-evidence is submitted to raise suspicion that a sign was placed on a document with blank space. The second opinion is that if the other party to the document submitter proves that it was a document with blank space at the time of signing, the presumption of Article 358 is broken, and the burden of proof for ‘filling in the blank with authority’ shifts to the submitter of the documentary evidence. The third opinion is that in order to break the presumption of Article 358, the other party of the document submitter must prove both the fact of signing on the document with blank space and the fact of filling in the blank without authority of the incomplete document. I agree with the second opinion. This is because it is against the purpose of Article 358 for the submitter of documentary evidence to lose the evidential value of ‘the fact that the holder of the title himself signed on the document’ simply because there is suspicion that he may have signed the document with blank space. 민사소송에서 서증으로 제출된 문서에 관해 ‘백지문서에 날인했는데 상대방이 부당보충했다’는 주장이 제기된 경우 민사소송법 제358조 추정을 번복시키기 위해 어떤 내용이 증명돼야 할까? 대법원판결들은 서로 충돌하는 세 가지입장을 보이고 있다. 제1 견해는 문서 제출자 상대방이 반증으로 백지문서에날인했을 수도 있다는 의심을 불러일으키면 제358조 추정이 깨진다는 것이다. 제2 견해는 문서 제출자의 상대방이 본증으로 날인 당시 백지문서였다는 점을증명하면 제358조 추정이 깨져서 ‘정당한 백지 보충’에 대한 증명책임이 서증제출자에게 넘어간다고 한다. 제3 견해는 서증 제출자의 상대방이 백지문서 날인사실과 부당한 백지보충 사실 둘 다를 본증으로 증명해야 제358조 추정을깨뜨릴 수 있다고 한다고 한다. 사견으로는 제2 견해에 찬성한다. 백지에 날인했을지도 모른다는 의심이 든다고 해서 ‘날인의 인정’의 증거가치를 무(無)로돌리고 서증 제출자에게 처음부터 다시 진정성립을 증명하라고 요구하는 것은제358조의 의미를 지나치게 약화시키는 결과를 낳을 것이기 때문이다. 대법원이 어떤 견해를 선택하느냐의 문제는 법률해석의 문제라기보다는 세상 이치에대한 가치판단 문제이고, 논리칙의 문제가 아닌 경험칙의 문제이다. 대법원이문제의식을 가지고 하급심에 대해 통일된 지침을 제시하는 일이 시급하다.
김창희(Changhee Kim),연성현(Seonghyeon Yeon),김규영(Kyuyoung Kim),이남수(Namsoo Lee),조용(Yong Cho) 대한설비공학회 2022 대한설비공학회 학술발표대회논문집 Vol.2022 No.11
Heat pump systems offer economical alternatives of recovering heat from different sources for use in various industrial, commercial and residential applications. Heat pump becomes a key component in an energy system with great potential for energy saving. This paper presents the design process and experimental results of oil-free water-source heat pump system. A set of experimental tests was first carried out to examine the performance of heat pump system under three different operating conditions.