미세 골절 진달을 위한 초음파 C-scan의 활용 가능성

박원근,최민주,이원흠,이윤준,이헌주,강창익,박전홍 제주대학교 공과대학 첨단기술연구소 2001 尖端技術硏究所論文集 Vol.12 No.2

The study examines the medical potential of an ultrasonic C-scanning technique and for diagnosis of the fatigue induced micro-fractures of the bone. In general, it is not easy to detect the micro­fracture by a simple radiological technique. In the study, the micro­fractures were made on the tibia taken from pigs using a three point bending. Comparison was made between the ultrasonic C-scan images (25 MHz) and X-ray images of the bones with the micro-fractures, It was found that the micro-fractures invisible on the X-ray images were observed on the ultrasonic images. It is proposed further in-vitro and in-vivo studies making the ultrasonic C-scan technique clinically useful for the diagnosis of the fatigued induced micro-fractures of the bone which are not possible to detect by the conventional radiological method.

주요우울증이 근로자의 생산성에 미치는 영향 : WHO-HPQ(Health and Work Performance Questionnaire)를 이용한 예비연구

김원,황태연,함병주,이준석,최병휘,김세주,서용진,강은호,우종민 大韓神經精神醫學會 2007 신경정신의학 Vol.46 No.6

Objectives : Major depressive disorder (MDD) causes patients' distress and makes socioeconomic burden, both directly and indirectly. We used the concept of lost productive time (LPT) to estimate the indirect costs and calculated both absenteeism and presenteeism among workers with MDD. Mcthods : Depression group was recruited from workers visiting psychiatric outpatient clinic who had MDD without major physical or mental disorders (N= 106). Age and sex matched healthy control group was also recruited through advertisement (M=100). All participants completed a interview using WHO Health and Work Performance Questionnaire (HPQ), Job Stress Measurement Scale for Korean Employees, and Hamilton Rating Scale for Depression. Statistical analysis was performed with independent t-test or χ² test as characteristics of values (p=0.05). Results : The number of absence (0.94-day/month vs. 0.10-day/month, P=0.015) andthe numberofearly leaving (2.56-day/month vs. 0.24-day/month, P<0.001) were significantly higher in the depression group. Depression group evaluated their Perfor-mance level much lower than controls with significant value (5.16 vs. 7.62, P<0.001). In addition, depression group estimated their performance level during the last 4 weeks lower compared to the level of past 1-year (5.16 vs 6.63, P<0.001). The estimated costs of absenteeism in depression group were higher than controls by 2,520,000 Korean Won per year, and those of presenteeism were also higher by 4,880,000 Korean Won per year. The total costs of LPT in depression group were higher than controls by 7,400,000 Korean Won, which corresponds to 26% ofmean annual salary. In addition, the level of occupational stress, such as high demand and interpersonal conflict, was higher in the depression group. Conclusion : Major depressive disorder costs substantial productivity loss to workers and their company. Presenteeism imposes more time cost than absenteeism. Effectiveness trials are needed to devise cost-effective programs for the early detection and treatment of depression at the workplace.

전국 10개 종합병원 중환자실 환자의 직장내 Vancomycin-resistant Enterococci(VRE) 보균율, 보균의 위험요인 및 유전적 다양성 조사

정희진,송준영,엄중식,김우주,최선주,최정현,이혁,정문현,이광미,신동현,손보라,최종성,우흥정,권정아,이경원,최강원,박승철 대한감염학회 2002 감염 Vol.34 No.5

간세포암과 하대정맥 막성폐쇄의 치료 후 호전된 백혈구파괴혈관염 1예

이준엽 ( Jun Yeob Lee1 ),이주원 ( Ju Won Lee1 ),이진욱 ( Jin Wook Lee ),박현준 ( Hyun Joon Park ),장국환 ( Gook Hwan Jang ),김다정 ( Da Jung Kim ),김선민 ( Sun Min Kim ),한병훈 ( Byung Hoon Han ),정규식 ( Gyoo Sik Jung ),김근태 ( 대한류마티스학회 2015 대한류마티스학회지 Vol.22 No.5

Vasculitis is a heterogeneous group of diseases that destroy blood vessel walls by inflammation. Approximately half of vasculitis cases are idiopathic, but sometimes associated with genetic factors, medicines, chronic infection, autoimmune diseases, and malignancies. Although the mechanism remains unclear, vasculitis secondary to malignancy, also known as paraneoplastic vasculitis, has been reported. It is generally associated with hematologic malignancies rather than solid malignancies and commonly presents as leukocytoclastic vasculitis or polyarteritis nodosa. We experienced a case of leukocytoclastic vasculitis in a patient with hepatocellular carcinoma and membranous obstruction of the inferior vena cava. Here, we report this case with a brief review of literature. (J Rheum Dis 2015;22:322-326)

동절기 단열갱폼으로 인한 경제성 효과 및 투입 원가 분석 연구

원준연,이영도,남경용,Won, Joon-Yuen,Lee, Young-Do,Nam, Kyung-Yong 한국건축시공학회 2018 한국건축시공학회지 Vol.18 No.4

This paper verifies the superiority of warming work in winter by applying the insulation gang-form to the apartment housing site and analyzes the economic feasibility of the application. According to the experimental results, the actual cost of warming work was about 52 million won less than planned, and 160 million won less than the existing average.(Note - The cost of gang form material increased from 260 million won to 310 million won after the change) As a result, the construction cost could be reduced by about 110 million won. As the costs of warming work can change depending on the number of floors, the building number, and the area of each site, it is deemed necessary to conduct a thorough review in advance at the site where the cost of warming work is to be applied. 본 논문은 단열갱폼의 공동주택현장 적용을 통해 단열갱폼 동절기 보양우수성을 확인하고, 현장 적용에 따른 경제적 타당성을 분석하고 있다. 실험결과에 따르면 실제 보양투입 비용은 사전계획대비 약 5천 2백만 원을 절감하였으며, 기존 일반갱폼대비 약 1억 6천만 원을 절감하였다.(참고 - 변경전 갱폼 자재비는 2억 6천만 원에서 변경 후 3억 1천만 원으로 약 5천만 원 증가함) 결과적으로 단열갱폼으로 변경하여 약 1.1억 원 가량의 공사비를 절감할 수 있었다. 현장마다 층수, 동수, 면적이 달라짐에 따라 보양공사비가 변경될 수 있으니 단열갱폼 적용 예정인 현장에서는 사전에 충분한 검토가 이루어져야 할 것으로 판단된다.

1992學年度 新入生 實態調査

李德出,元俊載 仁荷大學校 學生生活硏究所 1993 學生生活硏究 Vol.13 No.-

OVERBITE와 顔頭蓋 複合體의 骨格性 要素의 相關關係에 關한 硏究

李台俊,梁源植 대한치과교정학회 1985 대한치과교정학회지 Vol.15 No.2

This study was undertaken to find out the factor highly correlated to the depth of overbite among the skeletal factors of the craniofacial complex using lateral roentgenocephalograms. The subjects cconsited of fifty normal occlusions, sixty Class I malocclusions, sixty Class Ⅱ division 1 malocclustions and sixty Class Ⅲ malocclusions. The results were as follows: 1. Ans-Go-Me angle and lower gonial angle showed high correlation to the depth of overbite in the total malocclusions sample. 2. The mean values of Ans-Go-Me angle and lower goinal angle for the normal sample were 49.8˚and 75.6˚, respectively. 3. Ans-Go-Me angle above 56˚or lower gonial angle above 84˚ indicated a tendency toward an openbite. Conversely, Ans-Go-Me angle below 48˚or lower goinal angle below 73˚indicated a tendency toward a deepbite.

콘크리트 동결-융해 손상의 비파괴 평가를 위한 One-Sided 응력파 속도 측정기법의 적용에 관한 연구

이준현,박원수 한국비파괴검사학회 2000 한국비파괴검사학회지 Vol.20 No.4

동결-용해 피로로부터 발생되는 손상이 콘크리트 열화 및 붕괴를 초래하는 중대한 문제가 된다는 것은 이미 널리 알려져 있다. 일반적으로 동결-융해 피로가 지속되면 콘크리트의 미시조직에 내부응력과 크랙을 유발시킨다. 본 연구에서는 콘크리트에서의 동결-융해 손상을 평가하기 위해 종파와 표면파속도를 동시에 측정하는 one-sided 응력파 속도측정기법이라는 새로운 기법을 사용하였다. 상업용 시험장치를 이용하여 ASTM C666에 따라 제작된 400 ×350 ×100mm 크기의 콘크리트 시편에 동결-융해 손상을 발생시켰다. 1사이클은 온도변화를 -14에서 4℃로 하였고, 4~5시간이 소요되었다. 매 5사이클마다 one-sided 응력파 속도측정기법에 기초하여 종파 및 표면파속도를 측정하였다. 동결-융해 손상이 증가함에 따라 종파 및 표면파속도의 변화가 있었고, 이것은 동결-융해 피로 손상과정을 보다 유효하게 나타낸다는 것을 입증하였다. 또한 one-sided 기법에 의해 측정된 종파속도의 변화를 투과법을 이용하여 측정된 결과와 비교하였다.

Extended-C 컴파일러에서 중간 언어 TUP의 해석기 설계 및 구현

李俊東,元裕憲 弘益大學校 科學技術硏究所 1993 科學技術硏究論文集 Vol.3 No.-

One of the methods of compiler construction is to design an abstract machine and to implement it's interpreter which simulates the abstract machine code compiled from the source program. As using this method, you can make higher portable compiler. In this study, I designed and implemented the TUP code interpreter as a abstract machine of a intermediate language TUP. TUP code interpreter can execute the TUP code generated from front-end without making compiler's back-end. so, it doesn't need a machine dependent back-end. By using the machine-independent abstract machine, you can use the compiler abstractly without a machine dependency and it plays a part to make portability of compiler higher. Actually, TUP code interpreter implemented from MIPS RS 2000 and it moved into SUN SPARC 10. As a result, it was possible to execute TUP code interpreter without any special modification. Also, TUP code interpreter can be used as a tool to test a front-end when you develop a compiler and it has some debugging function.

영남대학교 의과대학 부속병원 외래환자에 대한 약물처방 동향의 분석

이광윤,김원준,김승훈 영남대학교 의과대학 1985 Yeungnam University Journal of Medicine Vol.2 No.1

대구 및 그 인접지역의 질병 발생 경향을 추정하고, 영남대학교 의과대학 부속병원의 약제수급 계획을 위한 참고자료를 얻기 위하여 1985년 3월부터 동년 8월까지 당 병원 외래에 내원한 환자들을 위하여 내려진 약물 처방을 전산 집계하여 다음과 같은 결과를 얻었다. 가장 빈번히 처방된 약물로 부터 100종의 약물을 처방빈도 순으로 나열하였던 바, diazepam, aluminum compound, acetaminophen, isoniazid,metoclopramide,?????????, carboxymethylcystien, ephedrine, codeine, caroverine(이하 생략) 등의 순으로 나타났으며, 이와 같이 선정된 100종의 약물을 임상용도별로 분류하여 총 처방회수 521,855회에 대한 백분율을 조사한 결과는 다음과 같다. 중추신경계약물(20.57%)이 가장 많았고, 다음은 위장관 및 평활근에 작용하는 약물(18.64%), 호흡기계약물(16.11%), 항균제(15.12%), 심혈관계약물(5.64%)의 순으로 많았으며, 그 다음은 소염제(4.33%), 단독비타민제(3.76%), 호르몬 및 항호르몬제(3.29%), 감기치료제(3.12%), 이뇨제(2.81%), 간기능이상치료제(2.02%), 자율신경계약물(1.89%), 항히스타민제(1.02%) 및 소독약(0.74%) 등의 순으로 나타났다. This report offers descriptive data about the drugs utilized in out patient department (OPD) of Yeungnam University Hospital (YUH) in the period of march to august in 1985. The data in this report were produced by the computerized totalization of the number of mentions of individual drugs included in the prescriptions. The 100 drug entries that were most frequently recorded are listed in rank order. The listing is arbiturarily restricted to the drugs that were prescribed as single preparations, the drugs of basis of compound preparations and the drugs of adjuvent or corrective of compound preparations that have significant therapeutic effects-either by generic names. And in addition, the listing also involves the compound preparations used in relatively large frequency, and the individual components of which have the unique pharmacologial actions each other by proprietary names. And all routes of administrations were allowed. The 10 drugs most frequently named are diazepam, aluminum compounds, acetaminophen, isoniazid, metoclopramide, ?????????, carboxymethylcystein, ephedrine, codeine and caroverine in order. The 521, 855 drug mentions listed as above are described by the chief therapeutic usage that each is intended to apply generally. The drugs which account the largest proportion of total mentions were those acting on the central nervous system(20.57%), including tranquillizers and sedative hypnotics(11.71%), analgesic antipyretics(5.55%), antidepressants(2.15%) etc. Gastrointestinal drugs and smooth muscle preparations(18.64%) included antacids and anti-ulcerdrugs(9.24%), antiemetics(3.57%), spasmolytics(3.14%) and others. Respiratory drugs (16.11%) included expectorants and cough preparation(10.99%) and bronchodilators(5.12%).Cardiovascular drugs (5.64%) included cardiac drugs and coronary vasodilator(4.12%) and antihypertensives and vasodilators(1.06%). And anti-inflammatory drugs(4.33%), vitamins of single preparations (3.76%), hormones and their antagonists(3.29%), common cold preparations(3.12%), diuretics(2.81%), drugs supporting liver function(2.02%), drugs affecting autonomic nervous system(1.89%) including anti-glaucomas, atropine and cerebral vasodilators, antihistamine drugs(1.02%) and disinfectants(0.74%) were following in order. The data in this report were compared to those reported by H. Koch, et al. in United States(US), 1981 as "Drugs Most Frequently Used in Office Practice: National Ambulatory Medical Case Survey, 1981." Cardiovascular drugs prescribed in YUH were much less in proportion than in US(10.56),but gastrointestinal drugs accounted the larger proportion than in US(3.72%). Expectorants and cough preparations in YUH also accounted the larger proportion than in US(2.74%). In conclusion, in the period of march to august, 1985, OPD of YUH prescribed the CNS drugs including diazepam most frequently, and gastrointestinal, repiratory and chemotherapeutic drugs in next orders. It is supposed that the eating habits of Koreans and a unique atmospheric condition in Taegu as a basin were some important factors that affected the proportions of drugs acting on gastrointestinal and repiratory tracts.