광 기록 시스템을 위한 멀티모드 변조 코드의 DC-억압 코드 선택 방법

이명진,이준,이재진,Lee, Myoung-Jin,Lee, Jun,Lee, Jae-Jin 한국통신학회 2003 韓國通信學會論文誌 Vol.28 No.3C

Multi-mode coding method is a reliable DC-suppression method. There are two ways to improve the DC-suppression performance. One is improving scrambler's performance, and the other is improving selection criteria. The latter uses the MRDS(minimum running digital sum) criterion. It is easy to calculate, but its performance goes down when the length of codeword is getting longer. The MSW(mean squared weight) criterion that is known as the best so far regardless of the length of codeword has the high complexity. In this paper, we present the new selection criteria, MPRDS(minimum peak RDS) and A BSRDS(absolute RDS). Their performance are close to the MSW, implementation is simple. And also we present the SC(sign change) that has a subsidiary role with the original selection criteria and improve the capacity. 신뢰할 수 있는 DC-억압(DC-suppression) 방법으로 멀티모드 코딩 방법이 있다. 멀티모드 코드의 DC-억압 성능을 향상시키는 방법에는 스크램블러(scrambler)의 성능을 개선하는 방법과 후보 코드워드의 선택 기준(selection criteria)을 개선하는 방법이 있다. 후보 코드워드의 선택 기준으로 흔히 사용되는 MRDS(minimum running digital sum) 기준은 계산 및 구현이 쉬운 반면에 후보 코드워드의 길이가 길어질수록 성능이 저하되는 단점이 있다. 코드 워드 길이에 무관하게 최고의 성능을 갖는 MSW(mean squared weight) 기준은 구현상의 복잡도가 높다는 단점을 가진다. 본 논문에서는 이론상으로 가장 효율이 우수한 MSW의 성능에 근접하면서, 하드웨어 구현이 용이한 MPR DS(minimum peak RDS)와 ABSRDS(absolut RDS)라는 새로운 선택 기준을 제시하였고, 기존의 선택 기준과 함께 사용 시 보조적인 역할을 하여 성능 향상을 도모할 수 있는 SC(sign change) 알고리즘을 제시하였다.

리스프랑 관절 손상

이명진,Lee, Myoung Jin 대한족부족관절학회 2016 대한족부족관절학회지 Vol.20 No.3

The Lisfranc joint complex is an anatomical association of many bones and articulation, restrained by an even more complex network of ligaments, capsules, and fascia, which must work in concert to provide normal and painless motion. Careful diagnostic workup with high-quality radiographs and computed tomography of the foot are used to diagnose injuries and fractures of this complex. We have to understand the normal anatomy and injury mechanism in order to appropriately treat Lisfranc injuries. Good results have been associated with anatomic reductions of all bones, which was achieved with restoration of proper alignment.

당뇨발 절단에 있어 원인 감염균과 치료 결과와의 관계

이명진,이규열,김성수,김철홍,왕립,김현준,김기웅,Lee, Myoung Jin,Lee, Kyu Yeol,Kim, Sung Soo,Kim, Chul Hong,Wang, Lih,Kim, Hyeon Jun,Kim, Ki Woong 대한족부족관절학회 2013 대한족부족관절학회지 Vol.17 No.3

Purpose: To evaluate correlation between the clinical results and causative bacteria in diabetic foot patients with lower extremity amputation. Materials and Methods: One hundred twenty nine patients(131 feet) of diabetic foot amputations were followed for more than one year. Wound cultures were done by deep tissue or bone debris at first visit to our clinics. Retrospective analysis was performed using chart review and interview with the patients. Depending on the culture result, level of amputation, reinfection, duration of treatment, death rate, patient satisfaction and admission dates were evaluated. Results: Microorganisms were confirmed in 114 cases. In the other 17 cases, there were no cultured microorganisms. In bacterial growth group, Methicillin-sensitive Staphylococcus aureus was the most common pathogen and accounted for 34 cases. As other common pathogens, there were Methicillin-resistant Staphylococcus aureus(24 cases) and mixed infection(14 cases). Mortality is no difference in each infected group. Mixed bacterial infected patients have higher reinfection, longer hospital day and duration of treatment, but there is no difference in patients satisfaction and pain at last follow up. Conclusion: The most common pathogen in diabetic foot patients with lower extremity amputation was Methicillin-sensitive Staphylococcus aureus, and mixed bacterial infected patients have higher reinfection rate, longer admission date and duration of treatment than other bacterial infected patients.

국부 부식손상에 의하여 비대칭 전단저항 복부단면을 가진 강거더의 전단강도 및 거동평가

이명진,안진희,김인태,Lee, Myoung Jin,Ahn, Jin Hee,Kim, In Tae 한국강구조학회 2014 韓國鋼構造學會 論文集 Vol.26 No.2

국내에서는 교량의 공용수명 증가로 노후화 교량의 수가 급격히 증가하고 있다. 강교량의 경우, 가설위치에 따른 대기부식환경에 따라 구조부재에서의 국부 부식손상이 발생 될 수 있다. 특히 강거더 교량의 경우 부식손상이 복부판과 지점부 보강재에 집중적으로 발생된다. 복부판의 국부부식이 교량에 대하여 대칭적으로 발생하는 것이 아니므로 복부판의 국부 부식손상으로 인하여 강거더에서는 전단하중에 대하여 비대칭 복부단면이 발생할 수 있다. 따라서 본 연구에서는 유한요소해석을 통하여 강거더 비대칭 부식 복부단면의 형상비와 부식손상 정도에 따른 전단 좌굴강도 및 전단거동을 거동을 평가하였다. 또한 복부판의 부식손상 부피비와 인장영역에 대한 부식손상비를 고려하여 비대칭 국부 부식손상 단면을 가진 복부판의 전단좌굴강도 감소가 비교 평가되었다. The number of the deteriorated bridge has been sharply increased due to the increase in the bridge service period in Korea. Local corrosion problem of structural member can be occurred according to atmospheric corrosion environments based on the installation location of steel bridges. Especially, in case of the plate girder bridge, corrosion damage is concentrated on the web panel and stiffener at girder end. An asymmetrical shear resistant web section in the plate girder bridge can be caused from the local corrosion of the web panel, because local corrosion is not symmetrically occurred to the bridge. In this study, therefore, the shear buckling strength and behavior of a plate girder with asymmetrically corroded web panel was numerically evaluated using FE analysis, which was considering an aspect ratio and corrosion damage level of web panel. The shear buckling strength reduction of an asymmetrical shear resistant web panel was compared and evaluated according to corroded volume ratio for a web panel and for diagonal tension field of a web panel.

족부에 재발한 지방종 거대증: 증례 보고

이명진,김동률,Lee, Myoung Jin,Kim, Dong Ryul 대한족부족관절학회 2016 대한족부족관절학회지 Vol.20 No.1

We reported on a rare case of recurred macrodystrophia lipomatosa of the foot, and reviewed the literature. A 62-year-old male patient presented with right foot second toe pain; preoperative magnetic resonance imaging and radiograph examination was performed. After surgery the biopsy confirmed the diagnosis. American Orthopaedic Foot and Ankle Society score was checked before and after surgery. Wide excision of the affected area including ray amputation is an effective way to prevent recurrence and relieve the pain after surgery. The 2nd toe ray amputation was performed in the treatment of recurred macrodystrophia lipomatosa of the foot, and is thought to be an effective way to relieve pain and prevent recurrence. After minimally invasive surgery with complete excision surgery, additional data on recurrence and pain relief rate are needed.

역행성 골수강 내 금속정을 이용한 경-거-종골 유합술의 술 후 결과

이명진,이영구,김동률,유정우,Lee, Myoung Jin,Lee, Young Koo,Kim, Dong Ryul,Yoo, Jung Woo 대한족부족관절학회 2015 대한족부족관절학회지 Vol.19 No.4

Purpose: Tibiotalocalcaneal arthrodesis has been used as a treatment option for severe deformity including Charcot arthropathy, avascular necrosis of the talus, and severe osteoarthritis of the ankle and subtalar joint. The purpose of this study was to evaluate the result of the surgical outcome of tibiotalocalcaneal arthrodesis using a retrograde intramedullary nail. Materials and Methods: Tibiotalocalcaneal arthrodesis using a retrograde intramedullary nail was performed by one surgeon in 36 cases. Clinical and radiological finding was evaluated using assessment of fusion time, 5th metatarsal-tibial angle, possibility of postoperative complication, visual analogue scale for pain and American Orthopaedic Foot and Ankle Society (AOFAS) score. Results: Union was achieved in 33 cases at an average of 23 weeks (11~29 weeks). There were 3 cases of nonunion and 1 case of reoperation. Nail-tibial angle tended to be larger in nonunion cases. AOFAS score showed significantly poor outcome at malalignment (${\geq}5^{\circ}$), negative value of 5th metatarsal-tibial angle. Conclusion: Tibiotalocalcaneal arthrodesis using a retrograde intramedullary nail is considered a useful treatment option for severe destruction and deformity involving ankle and subtalar joint.

급성 아킬레스건 파열의 최소 침습적 봉합술

이명진,김민우,Lee, Myoung Jin,Kim, Min-Woo 대한족부족관절학회 2021 대한족부족관절학회지 Vol.25 No.2

Recently, the incidence of Achilles tendon rupture has been increasing with an increase in the elderly and the sports population. Various kinds of surgical options have been introduced up to now. Among them, the traditional open repair is most commonly used despite the risk of re-rupture or post-operative infections, which in turn can impair the blood flow to the Achilles tendon. Therefore, minimally invasive methods to overcome these complications have been studied with excellent outcomes.

오엠엠 리테일

이명진(Myoung jin, Lee) 현대건축사 2019 (월간)Maru Vol.- No.207

경제적 지위 측정값으로의 주택자산의 적용 가능성과 한계: 수도권 지역의 아파트 거주자를 중심으로

이명진 ( Myoung Jin Lee ) 한국조사연구학회 2007 조사연구 Vol.8 No.2

한국 사회의 대기업 이미지 평가

이명진(Myoung-Jin Lee) 고려대학교 아세아문제연구소 2016 亞細亞硏究 Vol.59 No.1

이 논문은 한국사회에서 대기업에 대한 이미지를 사회심리학 이론을 이용하여 다루고자 한다. 이를 위하여 사회정체성 개념과 감성조절이론을 기반으로 5대 대기업집단에 대한 태도와 평가를 체계적으로 살펴보았다. 대학생을 대상으로 하는 자료와 서울과 6대 광역시 거주 성인남녀를 대상으로 하는 자료를 이용한 분석 결과는 다음과 같다. 첫째, 대기업의 능력이 이미지라는 다소 추상적이고 주관적인 평가에 가장 중요한 영향을 미치고 있는 차원으로 나타났다. 둘째, 한국사회에서 대기업에 대한 이미지에 소유주에 대한 평가와 사회전반에 대한 신뢰가 중요한 역할을 하고 있다. 이는 1인 소유주가 지배하는 재벌이라는 한국의 대기업집단의 특성을 반영한 것이다. 따라서 대기업 이미지나 반기업정서를 설명하기 위하여 이미 선진국에서 논의되었던 기업 가치나 사회공헌 혹은 윤리 같은 조직 자체의 특징과 더불어 재벌과 낮은 공적신뢰라는 한국적 특성에 주목할 필요가 있다. This paper examines the image for the large corporations in Korea using social psychological theory. For this purpose, it deals with the attitudes and evaluation of the five leading conglomerates systematically based on the concept of social identity and affective control theory. Based on the survey data of college students and adults living in Seoul and six metropolitan cities, its results of data analysis are the followings. First, the capacity appears to be the most important dimension to influence on the evaluation of large corporation image. Second, the credibility of their owners and social trust play the important role to determine each dimenion of the corporation image. This reflects the characteristics of conglomrates in Korea. Therefore, it is necessary to pay attention to the characterstics of Korean conglomerates and lower public trust as well as corporate social responsibility and ethics to explain the large corporation images or anti-business sentiment in Korea.