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권용진(Yong Jin Kwon),정규원(Kyu Won Jeong) 대한기계학회 2018 대한기계학회 춘추학술대회 Vol.2018 No.12
In this paper, a signal processing system of the wheel dynamometer is studied. The wheel dynamometer is a sensor for measuring 6-components of load load which consists of 3 forces(Fx, Fy, Fz) and 3 moments(Mx, My, Mz) in real time while a vehicle is driving. It has 4 beams that each of those has 4 strain-gages and it is installed on the wheel of a vehicle. For measuring 6-components of load in real time, first of all, 16 strain-gages measure strains very quickly. After measuring strains, the signal processing system calculates the 6-components of load from the strains by an algorithm. The system has a DSP as a processor to calculate them. It also has a Zigbee communication module to deliver the calculated data to external devices which like a computer by wireless.
증례 : 류마티스 ; Henoch-Schonlein Purpura 환자에서 동반된 폐출혈 1예
권용진 ( Yong Jin Kwon ),정수진 ( Soo Jin Chung ),박민찬 ( Min Chan Park ) 대한내과학회 2011 대한내과학회지 Vol.80 No.6
저자들은 피부 자반증, 복통, 혈변, 단백뇨 및 혈뇨가 발생하여 HSP로 진단된 후 급격한 폐출혈 및 이차성 폐렴이 발생하여 경정맥 항생제투여로 감염 조절 후 부신피질호르몬제 치료를 통해 폐출혈이 회복된 1예를 경험하였기에 문헌고찰과 함께 보고하는 바이다. Henoch-Schonlein purpura (HSP) is an immunologically mediated systemic vasculitis of small blood vessels that primarily involves the skin, gastrointestinal tract, joints, and kidneys. HSP is a relatively common vasculitic syndrome in children, which usually resolves within several weeks, and requires no treatment. The pulmonary parenchymal involvement of HSP is a rare complication that predominantly occurs in adolescents and adults. Mortality following HSP pulmonary presentation is extremely high. Here, we report a case of HSP combined with pulmonary hemorrhage as a presentation of the vasculitic involvement of the lung. Recently, we experienced a case of a 49-year-old male patient with HSP who presented with palpable purpura, enteritis, and glomerulonephritis. Following the diagnosis of HSP, the patient developed sudden pulmonary hemorrhage due to the pulmonary involvement of vasculitis, and recovered following glucocorticoid therapy. (Korean J Med 2011;80:739-744)
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.
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.
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.
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.