저조도 환경에서의 이미지 기반 위치추정을 위한 특징점 매칭 알고리즘 성능 비교

권용진(Kwon, Yong Jin),최강혁(Choi, Kang Hyeok) 대한토목학회 2023 대한토목학회 학술대회 Vol.2023 No.10

위젯과 보안기능을 탑재한 IoT기반 스마트액자(BeeHiveFrame)

권용진 ( Yong-jin Kwon ),김판겸 ( Pan-gyeom Kim ),김우철 ( Woo-cheol Kim ),박예운 ( Yea-un Park ),김봉재,황영섭 ( Young-sup Hwang ) 한국정보처리학회 2016 한국정보처리학회 학술대회논문집 Vol.23 No.2

디지털액자가 고전적 액자의 향취를 주며 또한 사진을 바꿀 수 있는 기능도 제공하지만 아직 새 흐름이 되는 못했다. 그 이유는 비싼 가격과 사진을 전송하기가 불편하기 때문이다. 우리는 디지털 액자로 사진 전송을 쉽게 하고, 거기에 더하여 위젯과 보안 기능을 추가하는 연구를 하였다. 사진 전송을 위하여 AWS(Amazon Web Service) 서버를 사용하는데 AWS 서버는 언제 어디서나 원할 때면 사진을 WiFi로 전송할 수 있게 한다. 이는 현재 사용하는 USB나 SD 카드를 이용하여 디지털 사진을 전송하는 것보다 훨씬 편리하다. 우리의 디지털 액자를 사용하면 다른 사람과 사진 교환이 쉽고 따라서 가족, 친구, 동료 사이의 친밀감도 쉽게 높일 수 있다.

연구논문(硏究論文) : 의료의 질 향상 및 환자안전을 위한 제도 도입에 관한 고찰

권용진 ( Yong Jin Kwon ),임영덕 ( Young Deok Lim ) 단국대학교 법학연구소 2012 법학논총 Vol.36 No.2

The landmark report "To Err is Human", by the Institute of Medicine in 1999, cited studies that found that at least 44,000 people and potentially as many as 98,000 people die in United States hospitals each year as a result of preventable medical errors. So, medical errors were a big issue in U.S. And U.S. Congress make the legal system for preventing medical errors. The medical mistakes can be prevented by designing and utilizing the medical errors database system through reporting adverse events. But medical providers are reluctant to report their adverse events and participate in quality review activities for fear of liability or injury to their reputations. This problem can cause to prevent the accumulation of a sufficient number of adverse events. But if medical providers have the privilege of exemption from liability when they report their adverse events on the Patient Safety and Quality Improvement Act, report system for the medical errors database system may operate properly. Through a comparative study on the Patient Safety and Quality Improvement Act of foreign countries, we can draw implications for enacting the Patient Safety and Quality Improvement Act in Korea.

류마티스관절염 활막세포에서 Peroxisome Proliferator-activated Receptor-γ Agonist 처치의 염증매개인자 감소 및 활막세포 증식의 억제효과

권용진 ( Yong Jin Kwon ),정수진 ( Soo Jin Chung ),김태연 ( Tae Yeon Kim ),박민찬 ( Min Chan Park ) 대한류마티스학회 2010 대한류마티스학회지 Vol.17 No.2

Objective: This study investigated the effect of rosiglitazone, a synthetic peroxisome proliferator-activated receptor-γ (PPAR-γ) agonist, on pro-inflammatory gene expressions and cellular proliferation of fibroblast like synoviocyte (FLS) from patients with rheumatoid arthritis (RA), and to determine whether these actions are mediated by nuclear factor-kappaB (NF-B) down- regulation. Methods: Synovial tissues from patients with RA were obtained during total knee replacement surgery, and FLS were isolated. RA FLS were subsequently treated with 10 μM, 50 μM and 150 μM rosiglitazone with or without TNF-α (10 ng/mL) stimulation. FLS proliferation in response to rosiglitazone treatment was measured by MTT assay, and mRNA expressions of IL-1β, IL-6, CCL-2, CCL-7, COX-2 and MMP-9 were determined by real-time quantitative RT-PCR. The effects of rosiglitazone on NF-κB activation were evaluated using electrophoretic mobility shift assay (EMSA). Results: Rosiglitazone treatment without TNF-α induced a dose-dependent reduction in mRNA expressions of IL-1β, IL-6, CCL-2, CCL-7, COX-2 and MMP-9 from RA FLS. When TNF-α were treated with rosiglitazone, mRNA expressions of COX-2, MMP-9 were reduced dose- dependently. But mRNA expressions of IL-1β, IL-6, CCL-2, CCL-7 were increased in 10 μM rosiglitazone with TNF-α and then decreased as the concentration of rosiglitazone increased. Rosiglitazone treatment also suppressed FLS proliferation in a dose-dependent manner, and EMSA showed decreased NF-κB expression with rosiglitazone treatment. Conclusion: Rosiglitazone suppressed cellular proliferation and mRNA expressions of pro-inflammatory mediators by down-regulating the NF-κB signaling pathway in RA FLS. The outcomes suggest that activation of PPAR-γ can be a novel therapeutic approach in RA.

중학교 교가 가사의 교육적 가치 탐구

권혜인(Kwon Hae-In),한용진(Hahn Yong-Jin) 고려대학교 교육문제연구소 2013 敎育問題硏究 Vol.26 No.1

본 연구의 목적은 현행 서울시 중학교 교가 가사에 나타난 교육적 가치 지향성을 탐구해 보는 것이다. 이를 위해 서울시 소재 269개 중학교 교가 가사를 기초주의 교육학의 6가지 가치영역인 ①정신적ㆍ종교적 가치, ②사회적ㆍ건강적 가치, ③진리 가치, ④도덕 가치, ⑤물질 가치, ⑥심미 가치에 의거하여 분석해 보았다. 연구결과를 정리해 보면, 첫째 연구대상 학교의 교가에는 도덕 가치와 정신적ㆍ종교적 가치가 98% 이상 반영되어 있으며, 그 다음으로 진리 가치(92%), 사회적ㆍ건강적 가치(89%), 물질 가치(84%) 등이 나타나고 있는데 반해, 심미 가치가 교가에 반영된 학교는 67%에 불과하다. 둘째, 사용된 어휘를 기준으로 살펴보면 정신적ㆍ종교적 가치(88종)가 가장 다양하고, 그 다음으로 도덕 가치(69종)이다. 사회적ㆍ건강적 가치(34종), 물질 가치(31종), 진리 가치(26종), 심미 가치(25종) 등은 어휘수도 상대적으로 적음을 알 수 있다. 셋째, 교가 가사에 도덕 가치와 정신적ㆍ종교적 가치가 많이 나타나는 것은 교가를 작사할 때에 일상생활과 관련된 사회적ㆍ건강적 가치나 물질 가치 등보다 여전히 전통적 사회 규범을 중시하고 있기 때문으로 보인다. 특히 봉사의 개념과 관련된 심미 가치가 교가가사에 상대적으로 적게 나타난 것은 경제발전을 우선시 하는 사회분위기 속에서 홍익인간의 교육이념이 실제로는 교가 작사과정에 충분히 반영되고 있지 않았음을 보여주는 것이라 하겠다. The purpose of this study is to investigate the educational value orientation of lyrics of middle school song in Seoul, Korea. We have analyzed the 269 lyrics of middle school songs by the 6 value categories of Foundationism such as ① spiritualㆍreligious value, ② socialㆍhealthy value, ③ true value, ④ moral value, ⑤ material value, ⑥ esthetic value. The results are as follows; First, more than 98% of the lyrics shows moral value and spiritualㆍreligious value. And the 92% of the lyrics reflects the true value, while 89% and 84% of the lyrics has furnished the health value and material value, respectively. The lyrics of school songs which has the esthetic value is only 67% of all the subject. Second, analyzing the lyrics of school songs by vocabulary has revealed that spiritualㆍreligious value is most abundant (88 kinds), followed by moral value (69 kinds), socialㆍhealthy value (34 kinds), material value (31 kinds), true value (26 kinds), and esthetic value (25 kinds) are relatively low appearance in the lyrics. Third, the reason why the moral value and spiritualㆍreligious value are more abundant than that of socialㆍhealthy and material which are related to the everyday life suggests that lyric writers think much of the traditional social norm. Especially, esthetic value which is related to the service concept of Foundationism is the least appeared. It means the Hongik-Ingan, the idea of Korean education, have little effect on the writing school songs.

Fe-Ni, Co-Fe-Ni 소결체의 미끄럼 마찰 및 마멸거동

권용진,김태웅,김용석,Kwon Yong Jin,Kim Tai-Woung,Kim Yong-Suk 한국재료학회 2005 한국재료학회지 Vol.15 No.4

Dry sliding wear behavior of electro-pressure sintered Fe-Ni and Co-Fe-Ni compacts was investigated. Pin-on-disk wear tests were performed on the sintered Fe-Ni, Co-Fe-Ni disk specimens against alumina $(Al_2O_3)$ and silica $(SiO_2)$ ball counterparts at various loads ranging from 3N to 12N. A constant sliding speed of 0.1m/sec was employed. Wear rate was calculated by dividing the weight loss measured after the test by specific gravity and sliding distance. Worn surfaces and cross sections of them were examined by a scanning electron microscopy, and wear mechanism of the compacts was investigated. Wear characteristics of the compacts were discussed as a function of composition of the compacts. Relationship between the wear rate and mechancial properties of the compact was explored, and effects of the oxide layer that was formed on wearing surface of the compacts on the wear were also studied.

통전가압 소결된 Co-Fe, Co-Ni 소결체의 미끄럼 마찰 및 마멸거동

권용진,김태웅,김용석,Kwon Yong Jin,Kim Tai-Woung,Kim Yong-Suk 한국분말야금학회 2004 한국분말재료학회지 (KPMI) Vol.11 No.6

Dry sliding wear behavior of electro-pressure sintered Co-Fe and Co-Ni compacts was investigated. Pin-on-disk wear tests were performed on the sintered Co-Fe, Co-Ni disks against alumina $(Al_2O_3)$ and silica $(SiO_2)$ balls at various loads ranging from 3N to 12N. A constant sliding speed of 0.1m/sec was employed. Wear rate was calculated by dividing the weight loss of a specimen by the measured specific gravity and sliding dis-tance. Worn surfaces and cross-sections of the specimens were examined using an SEM and EDS to investigate wear mechanism of the compacts. The wear behavior of the compacts were discussed as a function of their com-position. Effects of mechancial properties of the compact as well as oxide layers formed on wearing surface on the wear were also discussed.

영리법인 의료기관 개설권 문제에 관한 소고

권용진 ( Yong Jin Kwon ) 연세대학교 법학연구원 2010 法學硏究 Vol.20 No.3

This study conducted background and institutional discussions related to permission of for-profit medical corporations. To this end, it analyzed the majority and minority opinion of recent judgement of the Constitutional Court and drew an issue as the premise of discussion. According to the discussion of the Constitutional Court, the ultimate issue of permission of for-profit medical corporations is whether the establishing and operation of medical corporations as well as doctors` medical practice have logical and inevitable relations in terms of commerciality. The majority opinion accepts such a logical and inevitable relationship so it sticks to the opinion that it doesn`t need to permit for-profit medical corporations in order to improve quality of health care and secure publicness. However, the issue of establishing and operation of medical corporations is not necessarily related to doctors` medical practice, and furthermore such a fact can be found in that more than half of medical corporations and sickbeds are operated by for-profit private hospitals. Based on the analysis, this study reapproached two aspects such as the aspect of the establishing and operation of medical corporations to secure publicness and the aspect of doctors` medical practice. First of all, regarding the establishing and operation of medical corporations, nonprofit medical corporations asserted the need of supervision and regulation to intensify publicness that they pursue originally as well as incentive to attract it. For-profit medical corporations asserted that interior control governance of the health care needs to be made in a right way from the opinion that health care itself should have publicness although the for-profit corporation pursues commerciality. In addition, they said that when it comes to doctors` medical practice, this issue should approach the aspect of legal and ethical control about doctors` medical practice, not the issues including the establishing entitlement of medical corporations and such control is based on the background of professionalism.

과체중과 비만 여성의 HbA1c 지표에 따른 당뇨병 예방을 위한 영양상담의 효과

권용진 ( Yong Jin Kwon ),선우섭 ( Sun Oo Sub ),문황운 ( Hwang Woon Moon ),박유경 ( Yoo Kyoung Park ) 대한영양사협회 2013 대한영양사협회 학술지 Vol.19 No.2

일측 서혜탈장 환아에서 반대측 서혜탈장 발생에 대한 임상적 연구

권용진,임시연,정풍만,Kwon, Yong-Jin,Rhim, Si-Youn,Jung, Poong-Man 대한소아외과학회 2007 소아외과 Vol.13 No.2

Contralateral exploration in children with unilateral inguinal hernia is controversial. This study was done to identify risk factors for the development of contralateral inguinal hernia in patients with unilateral inguinal hernia. The clinical experience of 4,206 inguinal hernias repaired by one pediatric surgeon on 3,358 children at HanYang University Hospital from September 1979 to December 2002 was analyzed. 1,868 (55.6%) hernias occurred on right side, 1,190 (35.4%) on left side, and 300 (8.9%) were bilateral. 2,702 children were boys and 656 were girls (M:F = 4.1:1). 170 children of 3,058 children with unilateral hernias (5.6%) developed contralateral inguinal hernia at 1 day to 95 months after herniotomy. 146 children were boys and 24 were girls (M:F = 6.1:1). The patients who had had herniotomy before 1 year of age developed contralateral hernia in 17.4%, compared with 5.6% overall average. The earlier the first herniotomy was performed, the more frequently contralateral hernia developed. The occurrence of contralateral inguinal hernia was more frequent in boys (146 of 2,460, 5.9%) than girls (24 of 598, 4.0%) and more frequent after left herniotomy (80 of 1,190, 6.7%) than after right herniotomy (90 of 1,868, 4.8%), but statistically not significant. 52.9% of contralateral inguinal hernia developed within 1 year after hernia repair, and 87.6% developed within 3 years. Routine exploration on contralateral side in children is not necessary.