서울의 Penicillinase Producing Neisseria Gonorrhoeae 발생빈도(1996)

김재홍,황동규,전재홍,김윤석,김중환,김용준,이창균,임동진,김현수,조창근,김경문,박상훈,전우형,김희성,이호정,차명수,김갑형,김형석,김석우,황지환,박병순,권오상,이민수,송기훈,성소영,이인섭,부태성 대한화학요법학회 1999 대한화학요법학회지 Vol.17 No.2

Background : In recent years, gonorrhea has been panedemic and remains one of the most commom STDs in the world, especially in developing countries. Objective & Methods: For the detection of a more effective therapeutic regimen and assessing the prevalence of PPNG, we have been trying to study the patients who have visited the VD Clinic of Choong-Ku Public Health Center in Seoul since 1980 by means of the chromogenic cephalosporin method. Results: In 1996, 139 strains of N. gonorrhoeae were isolated, among which 53(39.0%) were PPNG. Conclusion: Our results suggests that after a peak of 74.3% in 1993, the prevalence of PPNG in Seoul is gradually declining.

배관 검사용 Radiometric Scanning System 제작 및 시험

김용균,홍석붕,정종은,이정기,이윤호,정용하 한국비파괴검사학회 2002 한국비파괴검사학회지 Vol.22 No.5

필름을 사용하지 않는 방사선투과검사 시스템인 1차원 Radiometric scanning system을 개발하여 부식 및 침적물이 있는 배관의 두께평가에 적용해 보았다. 개발된 시스템은 단일 방사성 동위원소에서 나오는 방사선을 선형으로 접속하여 시험체를 투과시킨 방사선을 한개의 섬광형 검출기인 BGO를 사용하여 검출하는 single source - single detector alignment system을 제어하는 기계주사 시스템과 제어 프로그램을 개발하였다. 개발된 시스템의 성능을 GEANT4 프로그램을 사용하여 예측하여 보았다. 그리고, 인공결함을 제작하여 넣은 시편과 두께 변화를 준 시편에 적용하여 실제 성능을 평가하였다. 이 시스템은 방사성 동위원소를 이용하여 배관의 부식과 침적물에 의한 두께 변화에 대하여 실시간으로 필름을 사용하지 않고 평가할 수 있는 가능성을 알 수 있었다. One dimensional Radiometric scanning was fabricated and tested as a filmless radiographic inspection system, which could be applied to the evaluation of the corrosion and deposits in the pipeline. This system is composed of the single radioactive source of the collimated focusing beam, and single scintillation detector of BGO, and the mechanical scanning system to transport and align the source and detector, and the operating software to automatically control the mechanical scan system. The performance of the system was simulated using GEANT4 software. This system is applied to one specimen having an artificial flaw(flat bottom hole) in the pipe and other specimen with thickness variation. For the inspection by using the radioactive source in the pipeline, it is possible to evaluate the corrosion and deposits in real time and without film.

더블T형 콘크리트 교량의 수화열에 의한 온도응력해석 및 균열발생검토

김종우,이대근,박석균 대전대학교 산업기술연구소 1998 산업기술연구소 論文集 Vol.9 No.2

The analysis of thermal stress and cracking of concrete can be characterized from a knowledge of concrete temperature at early ages, environmental conditions, and cement hydration in the mixture. Several methods have been suggested to account for those interactions. These methods are to be classified into the approximate method and the exact method. For selecting the best method, it has to be considered the demand accuracy for the estimation of concrete temperature and thermal movement in the analysis model . In this study, the exact method based on finite element method (FEM) model is used to analysis the temperature distribution and thermal behavior of concrete at early alges in double T-type girder bridge. Double T-type girder bridge is being constructed at first in Korea. But it is apprehensive thermal cracking of concrete because double T-type girder has massive structure and is constructed all over by full concrete. Therefore. thermal stress and cracking of concrete in this bridge was also investigated.

한국 고령자계층의 건강증진행동에 관한 연구

김석일,이명섭,김대권 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.1

This study was undertaken to grasp health-promoting behavior of the elderly and to identify self-rating health status, demographic characteristics related to them in order to facilitate nursing intervention for health promotion of the population. The subjects for this study were 225 old persons visiting five general social welfare centers located in Tague. Data were collected by self-reported questionnaires from August, 2002to February, 2003. Questionnaires were Northern Illinois University's Health Self-Rating Scale, Walker and others' health Promotion Lifestyles Profile. Analysis of the data was done by the SAS program for descriptive statistics, t-test, ANOVA, and pearson Correlation Coefficient. The results were summarized as follows: 1. There were significant differences in health-promoting behavior according to sex)t=3.28, p=.0011), marital status(F=8.98, p=.0003), and average monthly pocket money(F=4.99, p=.0007). 2. For the participation in health-promoting behavior, the mean score was 2.96 and range was from 3.40 to 2.34. The factors of high mean score were sedentary life(3.40), regular diet(3.37), and factors of low mean score were stress management(2.34), accountability for health(2.60). 3. The mean score of health self=rating was 2.19(range 4-14) and was considered low. 4. Self-rating health status was correlated positively with health-promoting behavior(r=.1783, p=.0106). On the basis of the above findings, the followings are recommended; 1. Nursing strategies need to be developed considering personal demographic characteristics of the elderly. 2. Nursing interventions enhancing self-actualization, accountability for health, stress management of the elderly must be provided.

메모리 효율적인 방법을 이용한 3D 슈팅 게임 개발

박석희, 안성옥, 김수균 배재대학교 공학연구소 2014 공학논문집 Vol.16 No.1

현재 다양한 게임 개발 툴과 게임 엔진의 발전으로 초보자도 손쉽게 게임을 제작할 수 있게 되었다. DirectX SDK로 개발할 때의 장점은 게임 엔진에서는 접근하기 힘든 세세한 부분까지 구현이 가능하며, 비주얼 이펙트를 극대화하고 그래픽을 최적화하여 메모리 효율적인 측면이 있다. 또한 게임 개발 및 유지보수 면에서 최소의 비용으로 높은 효율을 기대할 수 있기 때문에 DirectX를 이용한 게임 개발이 꾸준하게 이루어지고 있다. 본 논문에서는 게임 개발 툴이나 엔진을 사용하지 않고 DirectX 라이브러리를 이용하여 3D 슈팅게임을 제작한다. 또한 누구나 손쉽게 접근할 수 있으며 간편한 조작으로 게임의 컨텐츠를 접할 수 있는 게임을 개발하는 것을 목표로 한다.

Treadmill을 이용한 점증적 최대 운동시 훈련자와 비훈련자의 혈청 면역글로빈

장석암,홍성균,김미영 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.1

OBJECTIVE: We wanted to examine whether changes in the response of maximal exercise on plasma Immunoglobulin between trained takwondo players (T) and Non- trained (NT). SUBJECT: The average age, stature, body mass of trained takwondo players and college men were 25.67±1.21 yr, 25.67± 0.82 yr,, Height 172.83±2.31 cm, 174.30±1.14cm, 67.38±3.24 ㎏, 97.17±3.27㎏. respectively. TEST METHOD : Maximal exercise treadmill test by Bruce protocol. Blood samples were obtained form subjects at rest bed 30 minute before test, after exercise and rest 30 minitue. Blood was drawn 12㎖ from the antecubital vein into sterile, SST-treated tubes(Sekisui, Japan). Just after the tubes were centrifuged(at 3,000 x g for 15 min at 20。 C) to obtain plasma, the samples were stored dry-ice bath until laboratory. The plasma were stored at -80。 C until further analysis. REESULTS: Blood samples were collected prior to exercise (PE) and immediately at the end of maximal exercise(ME). Data were analyzed by paired-sample t test at rest and maximal exercise. In trained and non-trained college men, plasma Ig D concentration was significantly (p<.01) decreased T(1.97 ± 0.33 ㎎/㎗) than NT (2.55 ± 0.57 ㎎/㎗) before exercise and plasma Ig D concentration was significantly (p< 0.01) decreased T(2.01 ± 0.32 ㎎/㎗) than NT (2.72 ± 0.55 ㎎/㎗) after exercise. Plasma Ig E concentration was significantly (p<.05) decreased T(148.40 ± 9.34 ㎎/㎗) than NT (150.90 ± 8.74 ㎎/㎗) before exercise. Plasma Ig M concentration was significantly (p<.05) decreased T(123.83 ± 50.14 ㎎/㎗) than NT (125.48 ± 50.23 ㎎/㎗) after exercise. Plasma Ig M concentration was significantly (p< 0.05) increased ME (1.97 ± 0.33 ng/㎗ than PE(125.48 ± 50.23 ㎎/㎗) in T. Concomitant to the significantly Ig M concentrations were significantly(p < 0.01) increased were PE than ME.

시선제어 시스템에서의 비선형 토크보상 적용

盧澈均,尹錫榮,金廣泰 慶一大學校 1997 論文集 Vol.14 No.2

Line of sight(LOS) control systems are precision electro-optical-mechanical gimbal assemblies designed to control the angular position of the LOS of a sensor precisely, therefore they are isolated from the base vehicle dynamics and LOS is pointed toward the target in a desired direction. Nonlinear torque disturbances in their systems cause LOS jitter which limit system performance. Major sources of nonlinear disturbance are friction torque by rotation and gimbal imbalance torque by nonlinear environment. This paper describes the compensation technique for reducing LOS jitter due to nonlinear friction coupling of the host vibration. Proposed compensator controls the feedforward torque command of plant adaptively to converge the error between reference model without friction and plant output to zero. Simulation results show that proposed compensator is effective in cancelling the nonlinear torque and improving the stabilization performance.

이차구순열 결손의 치료

임석균,박인순,여환호,지재휴,김영균,김수관 大韓顎顔面成形再建外科學會 1997 Maxillofacial Plastic Reconstructive Surgery Vol.19 No.2

Despite the current accomplishments with the repair of cleft lips, the surgical management of the nasal deformity remains a functional and aesthetic dilemma for patients, their families, and reconstructive surgeons. Recent improvements in the understanding and technical execution of te primary cleft lip repair have significantly reduced secondary sequelae and the consequent need for secondary surgical correction. But, secondary surgical corrections are necessary according to numerous factors. Such factors include the secondary surgical corrections are necessary according to numerous factors. Such factors include the severity of the initial deformity, the surgical plan, precision of execution of the primary repair, and success of the postoperative management. We preformed the secondary correction of cleft lip and palate in 11 patients via various methods. In conclusion, primary repair of cleft lip and palate patients is the most important to prevent the secondary deformities, and most of cleft lip and palate with secondary deformities must be treated with combined cheiloplasty and rhinoplasty.

초음파법을 이용한 콘크리트 역타시공 이음부 공극의 화상검출특성

박석균,백운찬,이한범,김명모 한국비파괴검사학회 2000 한국비파괴검사학회지 Vol.20 No.4

최근 역타시공법 등에 의한 콘크리트 구조물의 시공이 증가 추세에 있다. 이 경우, 자주 발생되는 신ㆍ구타설 콘크리트 시공이음부의 공극은 향후 구조물의 구조적인 특성과 내구성 등에 큰 영향을 미치게 된다. 그러나 현재 제안되고 있는 비파괴 검사법으로는 효과적으로 이음부 공극을 평가하기에 많은 한계가 있다. 본 연구에서는 시공이음부의 콘크리트 충전상태를 평가하기 위해 철골철근 콘크리트와 무근 콘크리트 시험체내에 공극을 모의제작한 후, 초음파속도 측정을 실시하고, 화상처리기법을 이용하여 비교적 용이하게 해석 가능한 방법에 대해 검토하였다.

일차 양측성 구순열의 일단계 재건에 대한 증례보고

임석균,이기혁,김영균,김수관,이병준,여환호,서재훈 大韓顎顔面成形再建外科學會 1996 Maxillofacial Plastic Reconstructive Surgery Vol.18 No.3

Bilateral cleft lip reconstruction can be performed in one-or two-stages. The choice depends on the surgeon's proficiency and experience. However the type and severity of the cleft must be considered. Complete or incomplete symmetric, bilateral clefts in which the premaxilla is within the alveolar arch or slightly protruded can be successfully treated with simultaneous lip reconstruction on both sides. There are some advantages that one-stage lip reconstruction facilitates creation of a symmetric and balanced lip, retraction of protruding premaxilla and the parent's psychologic satisfaction. However, there are some disadvantages such as micrognathia of the upper jaw by severe scar formation and poor adaptation of flap margins by severe tension. The surgeon must be able to judge and exploit the advantages offered by one-stage approach. We present the case report of one-stage reconstruction of primary bilateral cleft lip with literature reviews.