동화 관련 활동이 유아의 창의성 증진에 미치는 효과

권창길 ; 이기영 ; 고윤희 ; 최성열 김천대학교 2005 김천대학교 논문집 Vol.26 No.-

This study is to find out about the effect of children's stories and related activities on the creativity of children by conducting a research on 90 5-year-olds attending Kindergraten B in Gumi City and Kindergarten F ing Gimcheon City.

점회절 광간섭계를 이용한 연마된 실리콘 웨이퍼 표면형상 측정

권택민,김승우,김학용,이은상,이상열 한국공작기계학회 2008 한국공작기계학회 춘계학술대회논문집 Vol.2008 No.-

We devised a vibration-insensitive interferometer with a common-path scheme of generating the reference wave directly by transmitting the measurement wave through a single-mode fiber. This fiber-diffraction interferometer enables to cancel out the dominating vibration effect encountered commonly in both the reference and measurement waves in the due course of the two waves' interference. Besides, to suppresss parasite vibration disturbances caused to interferometer hardware components, a special type of spatial phase-shifter is added to capture four phase-shifter interferograms simultaneously without time delay using a single camera shot.

경남지역 벼 친환경재배시 고품질 유색미 생산을 위한 적정 품종

김상열,한상익,오성환,이종희,권영업 忠北大學校 農業科學硏究所 2015 農業科學硏究 Vol.31 No.2

교합성 골수강내 금속정으로 치료한 대퇴골 골절의 치료

권칠수,안종국,김용욱,김진혁,정병현,성열보,강재철 인제대학교 1995 仁濟醫學 Vol.16 No.4

대퇴골 간부 골절시 교합성 골수강내 금속정을 이용한 견고한 고정은 조기 관절 운동과 조기 체중부하가 가능한 보편적인 수술적 치료방법으로 그 사용이 증가하고 있다. 그리고 최근에는 골수강내 금속정이 대퇴골 간부 골절 뿐만 아니라 대퇴골의 근위부나 원위부에 치우친 골절이나 청소년기의 대퇴골 간부 골절의 치료에도 확대되고 있다. 본 논문은 대퇴골 골절 환자 54례를 대상으로 금속정 삽입술의 적응증의 확대와 그에 수반되는 문제점에 관하여 증례 분석 및 결과를 문헌 고찰과 함께 보고하고자 한다. The rigid internal fixation of femur shaft fracture with intramedullary nailing enables early joint motion and weight bearing. This procedure has been used with wide popularity because it is possible simultaneously to preserve the range of motion and to obtain the bone union. But in the proximal and distal femur fracture, the interlocking screws are too close to the fracture site, the rigid fixation cannot be achieved and when early weight bearing is permitted, failure of the metal is possible. Also, when femur fractures in the adolescence be treated with traction followed by casting, sometimes angular deformity and shortening may develope. These problems have solved to the use by intramedullary nailing. The authors reviewed and analyzed 54 cases of the fractures of femur treated by interlocking nails at Sang-Gye Paik Hospital from August 1989 to July 1992. The results were as follows ; 1.Among the 54 patients, male were 42 and female were 12. 2.The mean time of bone union was 19.3 weeks. 3.The authors usually used the closed locked nailing technique to fix the mid-shaft fracture of femur. In cases such as mid-shaft fracture combined wish proximal or distal femoral fracture, for the stability of fracture and the early mobilization, a reconstruction nail or modified nailing technique was used and an excellent bone union was obtained without any complication. 4.In a mid-shaft fractures of the femur in adolescents or young adult, the authors used interlocking nails of proper length or diameter by cutting-off the distal portion of the nail or by over-reaming of the too narrow medullary canal, and the outcome was favorable.

VDSL채널에서 정규화된 MMA 방법을 이용한 블라인드 적응 등화 기법

최성환,김한기,권호열 강원대학교 정보통신연구소 2001 정보통신논문지 Vol.5 No.-

VDSL technology can transmit data at rate of 10-50Mbps over a twisted-pair copper telephone loops. Therefore, one of VDSL core technology is channel equalizer. Because one of the most damaging impairments is linear distortion introduced by cable and RF interference. An adaptive equalizer needs to be trained before reliable transfer of information can be achieved. This can be done in two main ways. One way is to using priori known training sequence. The ocher way is not to using training sequence. This type of initial training of an equalizer is called blind equalization. Blind equalization provide bandwidth-efficient schemes. In this paper we propose dual mode SCS(Soft Constraint Satisfaction)-Multimodulus algorithm derived from the combination of SCS algorithms and decision-directed algorithm. This algorithms provide fast convergence speed and robustness. Using MATLAB, we investigate the performance of dual made SCS-MMA over VDSL test loops.

ADSL을 위한 전화선로의 특성분석 및 등화기 설계

최성환,전진화,권호열 강원대학교 정보통신연구소 1999 정보통신논문지 Vol.3 No.-

In this paper, we evaluate transmission channel characteristics of telephone cable to be used in general. First, we measured the impedances of open and short circuits in order to obtain the RLCG parameters per unit length of transmission line. And we obtained the frequency-dependent transfer function and propagation constant for transmission line using these values. The channel impulse response is derived from the inverse Fourier of transfer function. We design channel equalizer for ADSL(Asymmetrical Digital Subscriber Line) using the measured impulse response of channel. The results shows that the transfer characteristics decrease sharply according to the length of transmission line. Finally, we verify efficacy of the proposed method by means of simulation.

Indentation 기법을 이용한 원자로 압력용기용 저합금강의 미소영역 물성 및 미세조직 특성 분석

김성훈,최열,이봉상,홍준화,권동일 대한금속재료학회 2002 대한금속·재료학회지 Vol.41 No.2

Low alloy steels for nuclear reactor are degraded progressively through microstructural changes due to high operation temperature and irradiation. Strength properties are the most important factors for the selection of materials and the determination of degradation degree. Interfacial properties affected by strengthening particles with the range of nm size and strength distribution in microstructures could not be tested by the conventional mechanical testing methods. Microindentation and nanoindentation technique have been studied as a alternative of conventional methods. Specially, nanoindentation technique with a μN load range and a nm residual indent size range has been highlightened as a tool which is very useful to determine those properties. Since each phase composing microstructure of steels has a characteristic hardness value, it is possible to characterize phase on the basis of that character. In this study, by using of microindentation and nanoindentation technique can be evaluated microstructural mechanical properties of low alloy steels manufactured under 7 different kinds of processes. Through the study, we verified potentialities whether or not indentation technique can be used as a method to determine degree of degradation.

양극성 장애 조증과 혼재성 삽화의 치료제로서 Topiramate 단독요법의 항조증 효과와 안정성에 대한 예비 연구

천봉희,권성민,장진열,조성남,조 웅,권도훈 대한생물치료정신의학회 2002 생물치료정신의학 Vol.8 No.2

저자들은 양국성 장애 조중삽화 및 혼재성 삽화의 단독 치료제로서 새로운 항경련제인 topiramate의 항조증 효과와 안정성을 평가하기 위하여 본 연구를 하였다. 양극성 장애 조증 삽화와 혼재성 삽화로 진단이되어 입원을 한 환자 14명(남자 6명, 여자 8명)을 대상으로 topiramate를 단독으로 6주간 투여하였다. Young's Manic Rating Scale(YMRS), Brief Psychotic Rating Scale(BPRS)로 환자들의 증상정도를 평가하였으며, 추가해서 체중변화도 측정하였다. 연구결과, YMRS, BPRS 평균점수 및 체중은 topiramate 치료 전에 비해 6주 치료 후에 유의하게 감소되었다. 또, YMRS 점수가 20미만일 때 조증상태가 안정된 것으로 본다면, 본 연구에서 치료 6주 후 YMRS 점수가 20미만인 환자는 14명 중 7명으로 topiramate의 치료 반응률은 50%라 할 수 있다. 가장 흔한 부작용은 위장관 증상으로서 식욕감퇴, 구역, 설사 등이었으며, 이는 6주 연구 후에 topiramate 치료를 중단하게 하는 원인이었다. 진전이나 이상감각은 대체로 topiramate를 투여한 후 1∼2주 내에 나타났다가 1∼2주 지속된 후 사라졌다. 향후 연구에서는 본 연구의 제한점을 보완하는 대조군 연구가 필요하며, 부작용을 줄이기 위한 보다 적절한 topiramate의 증량방법도 고안되어야만 할 것이다. Objectives : Topiramate is a newly developed anticonvulsant agent with possible mood-stabilizing properties. The purpose of this study is to explore the antimanic efficacy and the tolerability of topiramate as monotherapy in bipolarⅠdisorder, most recent episode manic or mixed. Method : In this study, fourteen hospitalozed patients who met the DSM-Ⅳ criteria for bipolarⅠdisorder, most recent episode manic or mixed were given topiramate monotherapy for up to 6 weeks. The response to topiramate was assessed with Young's Manic Rating Scale(YMRS) and Brief Psychotic Rating Scale(BPRS). Body weight changes were also measured. The Ratings were completed at baseline nad then on 1,2,3,4, and 6 weeks. Results : The mean Young's Manic Rating Scale(YMRS) score improved from 38.36(25-42) at baseline to 22.29(12-37) at the end of the study. The Brief Psychotic Rating Scale(BPRS) score improved from baseline mean of 44.64(35-60) to a last observation of 28.92(13-43). The mean body weight decreased from 62.43kg(47-81kg) to 58.64kg(45-81kg). At the end of study, seven patients scored less than 20 on the YMRS score, three of them were less than 13, Adverse events included anorexia(N=9), nausea(N=6), diarrhea(N=4), paresthesia(N=4), tremor(N=2), and rash(N=1). Conclusion : In this study, the response rate to topiramate was 50% as a treatment agent for bipolarⅠdisorder, most recent episode manic or mixed and topiramate might be associated with weight loss. But the adverse effects such as gastrointestinal sympotoms decreased the compliance of topiramate. Inthe future, double-blind controlled studies are needed to further investigate the antimanic efficacy and tolerability of topiramate.

DES와 RSA의 결합 모델 기반의 채팅 프로그램

길정수,강상엽,권호열 강원대학교 정보통신연구소 2001 정보통신논문지 Vol.5 No.-

With the rapid development of communication technology and widespread uses of internet service, we showed on interest in information security. This environment was required protection of personal information and keeeping of data transmission secure. In this paper, we will enhance safty of RSA and the high speed processing of DES with the system. This chatting program is based on JAVA

과도한 운동으로 발생한 횡문근융해증에 의한 급성신부전증 1예

문철호,류보열,모성환,김태종,기장도,박용관,김용환,정종훈 조선대학교 1995 The Medical Journal of Chosun University Vol.20 No.1

Rhabdomyolysis may be defined as a clinical and laboratory syndrome which releases muscle cell contents into the plasma, such as creatine phosphokinase, due to skeletal muscle injuries. It can be the result of many diverse causes including muscle disease, ischemia, genetic disorder, metabolic disorder, infectious disease, drugs, comatose state, trauma or vigorous exercise that can lead to acute renal failure as a complication. Since first reported in 1941, rhabdomyolysis-induced acute renal failure has been documented many times, and the major causes of this disease are carbon monoxide poisoning, snake bites, and etc in Korea Reports of acute renal failure after exercise-related rhabdomyolysis with myoglobinemia are rare. We report a case of acute renal failure caused by exercise-related rhabdomyolysis in a 20 year old man.