부산시 중심시가지 활성화 방안에 관한 연구

윤상복,채성주,윤시운,오석기 동아대학교 건설기술연구소 2000 硏究報告 Vol.24 No.1

Urban management and C.B.D continuance's problem as a result of the extension of the city area and the existing commercial area's shrink due to city spatial structure lead to a lot of problems including doughnut phenomenon. The purpose of the this study is to figure out ways toward the strategies of commercial area prosperity that acts up positively to the multiple C.B.D by the change of urban spatial structure. The strategies of the commercial area prosperity in existing C.B.D were presented by dividing the recover of city function and the self-efforts for shopping facilities. To recover city function, first is to secure a settled population in hinterland. Second is to extend and complete of C.B.D function. Third is to improve that attractive element of C.B.D

수명 검사 자료의 분석 방법에 관한 연구

윤복식,김동석 弘益大學校 科學技術硏究所 1994 科學技術硏究論文集 Vol.5 No.-

Life testing data has some peculiar features which can be utilized for proper statistical analysis. Among others it has the bathtub curve describing the change of the failure rate according to the elapsed time. In this paper, we review various efforts to get life distributions fitted for the bathtub-like failure rate function and propose simple and effective life distribution models based on piecewise Weibull failure rate function. Also, we introduce a simple method to estimate the failure rate of the censored life testing data. We can utilize the results in this paper to develop a comprehensive computational tool for reliability analysis.

두경부 유리피판 26례 분석

정복성,윤근철,심경보,고경석,한상훈 大韓成形外科學會 1993 Archives of Plastic Surgery Vol.20 No.3

Twenty four patients(21 males and 3 females) aged 14 to 70 years underwent 26 microvascular free tissue transfers in head and neck reconstructions from April 1990 to July 1992 (27 months) . Nineteen cases were tumors in head and neck area, and four were acquired deformities such as burn alopecia, burn scar contracture of the neck, Romberg disease and frontal sinus infection, and one was hemifaclal microsomia. The free flaps were executed successfully in 15 upper aerodigestive tracts, in 2 scalps and 3 skull bases and in contouring and resurfacing six facial and cervical lesions. The selection of donor site was bases upon the location of defect and the volume of tissue required : the forearm free flap was used in 11 cases, the rectus abdominis in 5, the groin in 2, the jejunum in 2, the occipital scalp in one, the first toe web space in one, the latissimus dorsi in one, the serratus anterior in one, the parietotemporalis fascia in one and the omentum in one. The free tissue transfers were primarily indicated in all patients in our series and there was no flap failure. The complications were minimal and the morbidities low. A free flap in the head and neck area is not only the most expedient method of reconstruction but also either the most reliable or the only available one in some clinical situations.

자기표현 훈련 프로그램의 개발과 효과성에 관한 연구

고희숙,오복희 원광대학교 2006 論文集 Vol.37 No.-

The purpose of this study was to verify the effects of the Assertiveness Training Program which was to improved the self-Assert of victim woman. This study method was conducted by "The pre and post tests, quasi-experimental group design", and "pre-post, improved scores of the measures of assertive test were done. Experimental subject was voluntary 4 woman which were advertised by K sexual violence counseling center. In case of experiment group, during the 7 weeks, a week, every two hours, total 14 hours, the program to Assert the self-Assert was performed. There was an evaluation in the program, program's frequency and used time, 7 sessions were a little longer, and a session, 2 hours were a little shorter. The results show that there was statistically significant improvement for the experimental group in all. In addition, the participants evaluations were generally positive about the program. Above all considering, there was an effectiveness to Assertiveness Training.

冪函數 分布의 로렌쯔 曲線과 지니 指數의 推定

姜錫福,趙瑛錫 嶺南大學校 基礎科學硏究所 1991 基礎科學硏究 Vol.11 No.-

In this paper, we obtain the maximum likelihood estimator, the uniformly minimum variance unbiased estimator and a strongly consistent asymptotically normal unbiased estimator for each of Lorenz curve and Gini index of a power function distribution. The mean square error of each estimator is derived in terms of several special functions. The unmerical values of the mean square errors are also obtained.

잭나이프 核密度函數 推定量의 一致性

姜錫福 嶺南大學校 基礎科學硏究所 1995 基礎科學硏究 Vol.15 No.-

In this paper, we will obtain the mean and the variance of the jackknife kernel type density estimator which was proposed by Kang(1989). We also prove that the jackknife kernel type density estimator is asymptotically unbiased and consistent estimator of the density function.

정규화한 표본 로렌츠 곡선의 성질

강석복,유세기 嶺南大學校基礎科學硏究所 2002 基礎科學硏究 Vol.22 No.-

In this paper, we prove that the transformed sample Lorenz curve, normalized sample Lorenz curve, and the test statistics for testing of normality based on the normalized sample Lorenz curve and the modified Lorenz curve which were introduced by Kang and Cho (2001a, 2002) are location and scale invariant statistics.

질산용액에서 Nitroaniline 류에 의한 Al-brass의 부식억제에 관한 연구

주석복,김면섭,이성하 漢陽大學校 環境科學硏究所 1992 環境科學論文集 Vol.13 No.-

0.1M 질산용액에서 nitroaniline류에 의한 Al-brass의 부식억제에 대하여 무게감량 실험, 분극실험, SEM사진 분석 등을 행하였다. Al-brass의 부식속도는 부식계의 온도와 억제제의 농도 그리고 부식억제제의 형태 등에 의존한다. 무게갈량실험과 분극실험을 통해 알아낸 부식억제 효율은 2-nitroaniline>3-nitroaniline>4-nitroaniline의 순이었다. 분극실험의 결과로부터 억제제의 농도가 증가할수록 부식전위는 noble한 방향으로 이동하며 양극 Rafel slope는 일정한 반면 음극 Tafel slope는 증가하여 전류밀도를 감소시키는 것으로 보아 억제제인 nitroaniline는 Al-brass의 음극반응을 억제하는 것을 알 수 있었다. SEM사진 분석에서는 Al-brass의 표면상태를 확인함으로써 각 억제제가 부식반응을 상당히 억제하고 있음을 알 수 있었다. 또한, Flory-Huggins adsorption isotherm의 도입으로 구한 열역학적 특성치로부터 억제제의 흡착형태 등을 알 수 있었다. The inhibition effect of nitroanilines of corrosion of Al-brass in 0.1M nitric acid has been studied by weight loss measurement, polarization method and scanning electron microphotographs. Corrosion rate of Al-brass was depended on concentration of inhibitor and and temperature. The order of inhibitor efficiency according to the position of the substitued group was 2-nitroaniline>3-nitroaniline>4-nitroaniline. The results obtained from weight loss measurements were agreed to those obtaind from polarization studies. Thermodynamic parameters obtained form Flory-Huggins adsorption isotherm showed strong interaction between inhibitor molecules and Al-brass surface.

보육시설 과학 특별활동 프로그램의 개발과 적용

조복희,곽혜경,한유미,양연숙,손경화 한국영유아보육학회 2003 한국영유아보육학 Vol.0 No.32

The purpose of this study was to develop early childhood science activities, which could be utilized as an extracurricular program in the day-care center. The program is based on the Constructivist theory(Piaget and Vygotsky) and the nation-wide survey data on the extracurricular programs and science activities in the day-care center. After the manuals for the program was monitored and corrected by the professionals, the application of each activities was empirically tested by the teachers in the day-care setting. The effects of the sample program(6 activities) were conducted using Tegano, Sawyers & Moran(1989)'s Scientific problem-solving scale and Lee(2001)'s Scientific attitude scale. Subject of thirty nine children were administered by the pre-test and post-test and experimental group participated the program for six weeks. The results showed that the program was effective for enhancement of scientific problem-solving ability and scientific attitude of young children in day-care setting.

극단값分布의 母數에 대한 붓스트랩 推定

姜錫福,趙容德 嶺南大學校 基礎科學硏究所 1996 基礎科學硏究 Vol.16 No.-

We propose the estimators of the parameters of the extreme value distribution when the scale parameter is known and unknown. We compare the proposed estimators of the parameters with the maximum likelihood estimator (MLE) in the extreme value distribution in the sense of mean square errors (MSE) through Monte Carlo method.