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      • [연구활동]Concurrent 프로그램을 위한 Cross Debugger의 설계 및 구현

        박준철,은성배,강석열 대한전자공학회 1988 텔레콤 Vol.4 No.2

        본 논문에서는 TDX-10 시스팀 개발을 위한 cross 개발환경하에서 CHILL로 쓰여진 응용 프로그램을 위한 debugge.(CBUG)에 대해 기술한다. CBUG는 breakpoint에 기반을 둔 디버거로서 TDX-10 시스팀의 운영체계인 CROS의 도움을 받아 concurrent한 프로세스들의 디버깅에 적합한 기능을 가지도록 설계되었다. 또한 CBUG는 CHILL뿐 아니라 여타의concurrent 언어로 작성된 프로그램을 디버깅 하는 데도 사용할 수 있다.

      • KCI등재

        소경재를 이용한 통직집성재의 휨강도 특성

        박준철,홍순일 한국가구학회 2002 한국가구학회지 Vol.13 No.2

        This study was carried out to investigate the strength and technical feasibility of glulam from small diameter Pinus densiflora and Larix kaempferi. Small diameter logs are currently not used in structural laminated beam construction, but it is suggested that its properties may be feasible for this purpose. The glulam combinations were designed with high grade laminae located at outer laminations (face) and low grade laminae located at center laminations. Important problems of finger jointed glulam as a structural beam are the small modulus of rupture (MOR). One solution for this problem Mi to use veneer and solid wood as the face laminae. The MOE values were predicted for each beam from laminae. The results showed that actual beam MOE values exceeded slightly the predicted values. Based on the evaluation and analysis of Pinus and Larix glulam, the maximum load of Larix kaempferi glulam indicated large values. The bending properties of A and E types glulam were superior to others. It is suggested that this small diameter log can be a candidate for structural glulam construction, providing the proper combinations of face laminae.

      • KCI등재

        다낭난소증후군 환자에서의 우울, 불안, 스트레스를 유발하는 위험 인자

        박준철 한국융합학회 2022 한국융합학회논문지 Vol.13 No.3

        The aim of this study was to evaluate anxiety, depression and stress in women with polycystic ovary syndrome(PCOS) and to investigate the risk factors related to psychological difficulties. Sixty women with PCOS were evaluated for level of psychological stress using Beck depression inventory(BDI) and Depression anxiety stress scale(DASS) questionnaire. Serum antimullerian hormone, total testosterone, lutenizing hormone, follicle stimulating hormone, estradiol, lipid profile and 75g oral glucose tolerance test were measured. Thirty healthy women served as the control. Fifty two women with PCOS and 29 healthy women completed a questionnaire. Women with depression who scored >13 by BDI and >10 by DASS were 38.5 %, women with anxiety who scored >8 by DASS were 23.1 %, and women with stress who scored >15 by DASS were 30.8 %, which were significantly higher than control. In PCOS women, total testosterone, LH and AMH were significantly correlated with depression and stress. Weight, body mass index and waist-hip ratio were also significantly correlated with depression. In women diagnosed as diabetes and hyperlipidemia, depression and stress were significantly prevalent. Women with PCOS seemed to be more vulnerable to depression, anxiety and stress. Early diagnosis and management should be considered. 본 연구는 다낭난소증후군 여성의 불안, 우울, 스트레스를 평가하고, 발병 위험인자에 대하여 살펴보고자, 다낭난소증후군 여성을 대상으로 Beck's 우울증(BDI) 및 우울 불안 스트레스 척도(DASS) 설문을 시행하였고, 항뮐러리안호르몬(AMH), 총 테스토스테론, 황체형성호르몬(LH), 난포자극호르몬(FSH), 에스트라디올(E2), 지질대사 검사 및 당부하검사(OGTT)를 시행 후 분석하였다. 설문지를 완전히 작성하여 회수된 52명의 환자군과 29명의 건강한 가임기 여성 대조군을 분석하였다. 다낭난소증후군 환자 중 BDI>13점, DASS>10점인 우울증 38.5 %, DASS>8점인 불안 23.1 %, DASS>15점인 스트레스 30.8 %로 대조군에 비해 유의하게 높았다. 총 테스토스테론, LH 및 AMH는 우울증 및 스트레스와 유의한 상관관계를 보였고, 체중 및 체질량지수도 우울증과 유의한 상관관계를 보였다. 당뇨병과 고지혈증으로 진단된 여성에서 우울증과 스트레스가 높았다. 다낭난소증후군 여성은 우울증, 불안 및 스트레스에 더 취약한 것으로 나타나, 조기진단과 치료가 중요하다.

      • KCI등재후보

        스마트 무인항공기용 터보축 엔진의 동적성능과 응답성에 관한 연구

        박준철,노태성,최동환,양수석 한국추진공학회 2005 한국추진공학회지 Vol.9 No.3

        본 연구에서는 대상 엔진의 설계점, 정적 탈설계점 및 동적 탈설계점 성능해석을 위하여 상용코드(GSP)와 함께 기 개발한 해석용 코드를 사용하였다. 고도, 속도 및 출력변화를 포함하는 다양한 임무조건에 따른 엔진의 정적 성능과 이를 바탕으로 한 동적 특성도 분석하였다. 특히, Power setting 자체보다는 쓰로틀 조정을 통한 출력과 엔진 회전수, 그리고 터빈의 열 과부하특성을 응답시간과 함께 예측함으로서 추후 엔진제어장치인 FADEC 시스템 설계에 활용토록 하였다. In this study, the GSP and in-house numerical codes have been used for analyses of the on-design, static off-design and dynamic off-design performances. Through the various missions including altitude, velocity, and power variations the static engine performance have been investigated. The dynamic engine performances based on these complicated variations have been also analyzed. Especially, the power, engine rpm and heat overload characteristics of the turbine have been estimated with the response time through the control of the throttle setting rather than the power setting. It could be applied to the FADEC system as an engine control device.

      • KCI등재후보

        Epidemiology and Risk Factors for Bicycle-Related Severe Head Injury: A Single Center Experience

        박준철,장인복,안준형,김지희,오재근,송준호 대한신경손상학회 2017 Korean Journal of Neurotrauma Vol.13 No.2

        Objective: Head injury is the main cause of death and severe disability in bicycle-related injuries. The purpose of thisstudy was to compare the demographic characteristics and injury mechanisms of bicycle-related head injuries accordingto the severity and outcome and determine the main risk factors and common types of accompanying injuries. Methods: A total of 205 patients who were admitted to the neurosurgery department of our hospital for bicycle-relatedhead injuries between 2007 and 2016 were analyzed. We categorized the patients into two groups according to severityand outcome of head injury, and then identifed the differences in age, sex, and cause of injury between the two groups. Results: Collisions with a motor vehicle increased the risk of severe head injury (p=0.011), resulted in poor outcomes(Glasgow Outcome Scale [GOS] ≤3; p=0.022), and caused more accompanying chest/abdominal (p<0.001) and pelvic/lower extremity injuries (p=0.001) than other mechanisms. Older age and high grade of head injury severity resulted inpoor outcomes (p=0.028 and p<0.001, respectively), and caused more accompanying chest/abdominal injuries (p<0.032and p<0.001, respectively) compared with younger age and low grade of head injury severity. Conclusion: In bicycle-related head injuries, collision with motor vehicle is one of the most important risk factor for highgrade of head injury severity and outcome. In addition, bicycle-related head injuries are often accompanied by injuries ofother parts of the body

      • KCI등재후보

        조기 난소기능 부전증 환자에서 자가면역 질환과의 상관관계

        박준철,김종인,이정호,Park, Joon-Cheol,Kim, Jong-In,Rhee, Jeong-Ho 대한생식의학회 2004 Clinical and Experimental Reproductive Medicine Vol.31 No.3

        Objective: To assess the association with autoimmune endocrine diseases and detection rate of autoimmune antibodies and its clinical significance in patients with premature ovarian failure. Methods: Twenty eight patients with primary or secondary amenorrhea manifesting hormonal and clinical features of premature ovarian failure (primary POF: 7, secondary POF: 21) were investigated. We tested them TFT, 75 g OGTT, ACTH and S-cortisol for thyroiditis, IDDM, Addison's disease, and antithyoglobulin antibody, antimicrosomal antibody, antinuclear antibody, rheumatic factor, anti-smooth muscle antibody, anti-acetylcholine receptor antibody for non-organ specific autoimmune disorders. Results: Only one patient was diagnosed as IDDM and no patients had abnormal TFT or adrenal function test. More than one kind of autoantibody was detected in 11 patients of all (39.2%): 5 patients (71.4%) of primary POF group and 6 patients (21.4%) of secondary POF group. Eleven patients (39.3%) had antithyroglobulin antibody, 4 (14.3%) had antimicrosomal antibody, 2 (7.1%) had antinuclear antibody, 2 (7.1%) had rheumatic factor, 1 (3.6%) had anti-smooth muscle antibody, 1 (3.6%) had anti-acetylcholine receptor antibody. Conclusions: Premature ovarian failure may occur as a component of an autoimmune polyglandular syndrome, so patients should be measured with free thyroxine, thyroid-stimulating hormone, fasting glucose and electrolytes. Measurement of thyroid autoantibodies in POF patients may be important in identifying patients at risk of developing overt hypothyoidism, but other autoantibodies may not be suitable for screening test.

      • KCI등재

        A Study of the Factors that Influence the Continuance of Internet Banking

        박준철 한국경영교육학회 2009 경영교육연구 Vol.58 No.-

        As internet banking grows to become one of the most popular channels for consumers’ financial services, the choice of that channel has raised potential research questions in the e-business field. Much of the research that has been done on internet banking has emphasized the importance of customer behavior. This paper develops an extended TAM model in order to predict and explain customers’ behavioral intentions with regard to the adoption of internet banking. All hypotheses in the theoretical model were statistically significant. We found significant support that shared value, compatibility, social influence, and perceived ease of use positively affected perceived usefulness, and that social influence, self-efficacy, and quality of internet connection are significantly correlated with perceived ease of use. Moreover, perceived usefulness and perceived ease of use (basic TAM constructs) are correlated with intention to use. As internet banking grows to become one of the most popular channels for consumers’ financial services, the choice of that channel has raised potential research questions in the e-business field. Much of the research that has been done on internet banking has emphasized the importance of customer behavior. This paper develops an extended TAM model in order to predict and explain customers’ behavioral intentions with regard to the adoption of internet banking. All hypotheses in the theoretical model were statistically significant. We found significant support that shared value, compatibility, social influence, and perceived ease of use positively affected perceived usefulness, and that social influence, self-efficacy, and quality of internet connection are significantly correlated with perceived ease of use. Moreover, perceived usefulness and perceived ease of use (basic TAM constructs) are correlated with intention to use.

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