1995-96년 한반도 남동부 지역의 미소지진 자료를 이용한 지각구조 모델의 비교 연구

이기화,정태웅,Lee, Gi Hwa,Jeong, Tae Ung 한국지구물리물리탐사학회 1999 지구물리 Vol.2 No.1

한국자원연구소 지진관측망의 1995-96년 미소지진 자료를 바탕으로 한반도 남동지역의 지각구조에 대하여, Lee (1979), 김상조·김소구(1983), 김성균·정부흥(1985)의 세 지각 모델 중 어느 것이 잔차의 최소자승을 만족하는지 검증하였다. 세 모델 잔차의 뚜렷한 차이가 관찰되지 않았으나, Lee 의 지각 모델이 약간 깊은 진원을 산출하는 경향이 있다. 한반도 지각의 층상구조는 아직 명백하지 않으므로 앞으로 더 많은 자연지진 자료 또는 인공지진 자료를 통해서 규명되어져야 한다. Using the microearthquake data acquired from 1995 to 1996 through the seismic network operated by the Korea Institute of Geology, Mining & Materials (KIGAM), the three P-wave velocity models proposed by Lee (1979), Kim·Kim (1983) and Kim·Jung (1985) concerning the structure of the southeastern part of the Korean peninsula were examined in terms of the least square errors of the P-wave arrival times. The three models do not differ significantly in arrival time residuals except that the Lee's model gives slightly deeper focuses than the others. The layering of the crust of the peninsula is not clear as yet and to be studied by more earthquake and explosion data in the future.

4루트 방식에 의한 방전관용 안정기 개발

이오걸,김태우,김종기,송호신,이준탁 동의공업대학 2000 論文集 Vol.26 No.1

This paper was development a discharge tube ballast by 4 root method in order to wave improvement of high power factor and high efficiency. The discharge tube ballast consists of a power factor correction circuit and a correction circuit on switching frequency of inverter. Instead of passive power factor circuit, active power factor circuit is adopted. Because it has the advantage of size. weight, total harmonic distortion, out DC voltage regulation, and power factor. The power factor circuit with MG34262 is controlled by variable frequency discontinuous mode. Results experiments, discharge tube ballast by 4 root method showed to have excellent in the discharge tube ballast's operation and characteristics.

DSP 소프트웨어에 의한 전력변환기 게이팅 신호 발생

이해춘,박태열,김기택 江原大學校 産業技術硏究所 2001 産業技術硏究 Vol.21 No.A

Power converters are widely used in the applications of servo drives of ac and dc motors and power supplies. For the control of the converters carious control algorithms hate been proposed and realized by gating signal generation. Software control shemes are being applied to implement the control algorithms, but analog circuits are still used fort the gating signal generation because it requires verb fast and precise timing. In this paper the gating signal generation with DSP software are proposed for the three phase to three phase PWM converter. Design procedures and software flowcharts are presented and some experimental waveforms are also presented to verify the proposed algorithms.

Sinc 기저함수를 이용한 CGFFT의 수렴률 개선

이기태,장재성,김장형 濟州大學校工科大學附屬産業技術硏究所 1992 尖端技術硏究所論文集 Vol.3 No.-

The current induced on a perfectly conducting strip excited by incident fields which are transverse magnetic (TM) wave or transverse electric (TE) wave to the strip axis are solved by three methods. The one is analytic and the others are numerical methodd; SIT (Spectral Iteration Technique), CGFFT (Conjugate Gradient Fast Fourier Transform). It is estimated accuracy of current values, as that are compared results of the analytic method with that of the numerical methods. The procedure involves the incorporation of subdmain basis functions associated with the current representation of a conducting strip. It is shown that significant improvements are achieved in the convergences of the CGFFT method when using sinc basis functions.

中風早期檢診을 통한 高脂血症과 成人病에 대한 比較硏究

李紀泰,金允植,薛仁燦 대전대학교 한의학연구소 2002 혜화의학회지 Vol.11 No.1

From June 1th to December 31th 2001, the study was carried out 285 person who came to the Daejon oriental hospital for the examination of CVA. The result was as follows: 1. Hyperlipidemia patient is 41%, 50's is the highest. 2. In the case of Hyperlipidemia patient, Taeyum type is 49%, Soyang type is 36% and Soyum type is 15%. but in the Control group Taeyum type is 36%, Soyang type is 44% and Soyum type is 20%. 3. In the case of Abnormal EKC, Hyperlipidemia group is 34%, Control group is 32%. 4. In the case of Liver disease, Hyperlipidemia group is 17%, Control group is 9%. 5. In the case of Diabet mellitus, Hyperlipidemia group is 30%, Control group is 7%. 6. In the case of Hypertension, Hyperlipidemia group is 50%, Control group is 42%.

HL-60 세포 분화유도증 c-Myc 발현에 대한 세포분화유도제의 영향

이용진,곽상태,김계영,이명선,권기량,임규,황병두 충남대학교 의과대학 지역사회의학연구소 1993 충남의대잡지 Vol.20 No.2

Effects of the differentiation inducers on DNA synthesis and c-myc gene expression have been investigated during the differentiation of human promyelocytic leukemia cell line HL-60. All-trans retinoic acid(retinoic acid) and dimethyl sulfoxide(DMSO) decreased DNA synthesis at 24 hours and 12-O-tetradecanoylphorbol 13-acetate(TPA) decreased at 12 hours after exposure, respectively. On the other hand control, no adding differentiation inducers, gradually increased DNA synthesis. The c-myc mRNA was sharply reduced at 24 hours in retinoic acid-, at 4 hours in DMSO-, and at 1 hour in TPA-exposured HL- 60 cells. The level of c-myc mRNAs was reduced in proportion to the concentration in all of three differentiation inducers. The level of c-myc mRNAs in the differentiation inducers-exposured cells were elevated by cycloheximide treatment. These results suggest that c-myc gene expression and differentiation mechanism are variable according to the kinds of the differentiation inducers in HL-60 cells.

초음파 가이드를 통한 맥락막상강출혈의 치료

이기헌,유재호,김태원,이상준,김신동 고신대학교 의과대학 2009 고신대학교 의과대학 학술지 Vol.24 No.1

Purpose : Intraoperative suprachoroidal hemorrhage is one of the most serious complications. We report a case of suprachoroidal hemorrhage during phacoemulsification surgery, was managed properly. Methods : Suprachoroidal hemorrhage occurred during phacoemulsificaiton in other hospital. The patient was referred to our department immediately after closing the surgical wound. On initial examination, iris and vitreous were prolapsed through surgical wound. Ciliary body was closely place to anterior chamber, and retina was not visible. Results : Prolapased ocular tissue were reduced by emergency operation. We controlled the patient’s intraocular pressure and inflammation. Ultrasonography was repeatedly performed to check the degree of liquefaction of suprachoroidal hemorrhage. After 9 days of suprachoroidal hemorrhage onset, vitrectomy and drainage through sclera was performed. Postoperative state was stable with successful removal of suprachoroidal hemorrhage. After 2 weeks of secondary operation, retinal detachment has occurred on nasal retinal area, so we performed scleral buckling and endolaser photocoagulation. After 6 months, retina was attached well and intraocular pressure was in normal range. Conclusion : In suprachoroidal hemorrhage, drainage of suprachoroidal hemorrhage after liquefaction of thrombi is effective. After successful drainage, postoperative complications may accompany such as retinal detachment or elevation of intraocular pressure. 목적 : 술중 발생하는 맥락막상 출혈은 매우 심각한 합병증이다. 저자는 수정체 유화술 중에 발생한 맥락막상 출혈을 적절히 대처한 증례를 보고하는 바이다. 대상과 방법 : 수정체 유화술 중 발생한 맥락막상강 출혈환자가 수술창을 봉합 후 즉시 본원으로 전원되었다. 초진시 홍채와 유리체가 수술창을 통해 탈출되어 있었으며, 전방을 통해 모양체가 확인되었으나, 망막은 보이지 않았다. 탈출된 안구내 조직을 응급수술을 통해 복원 후 환자의 안압과 염증을 조절하였다. 초음파를 반복적으로 실시하여 맥락막상 출혈의 액화 정도를 확인하였으며, 출혈 9일 후 유리체 절제술과 공막을 통한 배액술을 시행하였다. 결과 : 맥락막상 출혈이 성공적으로 제거되었으며 술 후 상태는 안정적이었다. 수술 2주 후 비측 망막 박리가 발생하여 공막돌륭술과 안구내 삽관 레이저술을 시행하였다. 6개월 후 망막은 잘 붙어있었으며, 안압은 정상 범위를 유지하였다. 결론 : 맥락막상 출혈의 경우 출혈의 배액 시기를 결정하는 것이 어렵지만, 규칙적인 초음파를 통해 배액술의 시기를 결정할 수 있다. 또한 맥락막상강 출혈의 성공적인 배액 이후에도 망막박리 및 안압상승과 같은 합병증의 동반에 대해 유념해야한다.

Sinc 기저함수를 이용한 CGFFT의 수렴률 개선

이기태,김장형,장재성 濟州大學校 工科大學 産業技術硏究所 1992 産業技術硏究報告 Vol.3 No.-

The current induced on a perfectly conducting strip excited by incident fields which are transverse magnetic (TM) wave or transverse electric (TE) wave to the strip axis are solved by three methods. The one is analytic and the others are numerical method: SIT (Spectral Iteration Technique), CGFFT (Conjugate Gradient Fast Fourier Transform). It is estimated accuracy of current values, as that are compared results of the analytic method with that of the numerical methods. The procedure involves the incorporation of subdmain basis functions associated with the current representation of a conducting strip. It is shown that significant improvements are achieved in the convergences of the CGFFT method when using sinc basis functions.

도시지역 노인의 건강행위 실천 실태

이태진,배상수,이기홍,임재영,강경화 노인간호학회 2008 노인간호학회지 Vol.10 No.1

Purpose: The purpose of this study was to identify the health status and health behavior practices of elders living in urban areas. Methods: The participants were selected by convenience sampling and consisted of 137 elders 65 or over living in a city in Kyunggi Province. Data collection was done through interviews using a structured questionnaire. Results: Of the participants. 66.4% perceived their health status as 'not healthy'. The average number of present illnesses reported by the elders was 1.7. The average scores for health behavior practices were low (smoking cessation: 1.64, drinking abstinence: 1.79, exercise: 0.40, regular diet: 1.54, weight control: 1.67, regular physical check-up: 0.77). The scores for health behaviors practices showed significant differences according to general characters and health status. Conclusion: Health promotion programs for elders should be designed to enhance health behaviors practices.

近代英語 統語法의 成立

李起泰 대구 효성가톨릭대학교 1969 연구논문집 Vol.5 No.1