Development of Sun-Glint Prediction Program For The Communication, Ocean and Meteorological Satellite

Park Jae-Ik,Choi Kyu-Hong,Park Sang-Young,Lee Byoung-Sun,Ahn Yu-Hwan 한국우주과학회 2004 한국우주과학회보 Vol.13 No.2

Comparison of Melanoma Subtypes among Korean Patients by Morphologic Features and Ultraviolet Exposure

( Hong Sun Jang ),( Jee Hung Kim ),( Kyu Hyun Park ),( Jae Seok Lee ),( Jung Min Bae ),( Byung Ho Oh ),( Sun Young Rha ),( Mi Ryung Roh ),( Kee Yang Chung ) 대한피부과학회 2014 Annals of Dermatology Vol.26 No.4

Background: Genetic alterations have been identified in melanomas according to different levels of sun exposure. Whereas the conventional morphology-based classification provides a clue for tumor growth and prognosis, the new classification by genetic alterations offers a basis for targeted therapy. Objective: The purpose of this study is to demonstrate the biological behavior of melanoma subtypes and compare the two classifications in the Korean population. Methods: A retrospective chart review was performed on patients found to have malignant melanoma in Severance Hospital from 2005 to 2012. Age, sex, location of the tumor, histologic subtype, tumor depth, ulceration, lymph node invasion, visceral organ metastasis, and overall survival were evaluated. Results: Of the 206 cases, the most common type was acral melanoma (n=94, 45.6%), followed by nonchronic sun damage-induced melanoma (n=43, 20.9%), and mucosal melanoma (n=40, 19.4%). Twenty-one patients (10.2%) had the chronic sun-damaged type, whereas eight patients (3.9%) had tumors of unknown primary origin. Lentigo maligna melanoma was newly classified as the chronic sun-damaged type, and acral lentiginous melanoma as the acral type. More than half of the superficial spreading melanomas were newly grouped as nonchronic sun-damaged melanomas, whereas nodular melanoma was rather evenly distributed. Conclusion: The distribution of melanomas was largely similar in both the morphology-based and sun exposure-based classifications, and in both classifications, mucosal melanoma had the worst 5-year survival owing to its tumor thickness and advanced stage at the time of diagnosis. (Ann Dermatol 26(4) 485~490, 2014)

비틀림을 받는 RC 및 PC부재의 균열폭 계산방법에 관한 연구

박선규 成均館大學校 科學技術硏究所 1996 論文集 Vol.47 No.2

Since the highstrengthed steel and concrete is used in RC and PC structure, more and detailed design method is used and the section of member has also reduced. The crack in the design became an importanen. When the highstrengthed steel inside the member is used under high stress, the width of crack in concrete is significantly generated. This crack is not only given a rough surface in the exterior but also deteriorated the durability of the structure due to eroding. By this time, the study of crack generated from bending and tensional force has been activited in many nations. In the design method to maintain the serviceability and the durability, the width of crack in the standard code used in present has proposed according to the enviromental condition. The crack problem of RC and PC member under the tensional force has not been enough studied. The objective of this study is to derive the formula for calculating the width of crack on PC member under the pure tensional force among the methods of restricting the width of crack. This study will be contributed to the design method for the evaluating of serviceability.

웨이브릿변환을 이용한 변환영역 적응필터의 잡음제거

박순규 진주여자전문대학 1995 論文集 Vol.18 No.-

The concept of transform domain adaptive filtering is introduced. In certain application, filtering in the transform domain results in great improvements in convergence rate over the conventional time domain adaptive filtering. The frequency domain transform is several existing. The two type of adaptive filtering in transform domain can be accomplished by Fourier transform and Wavelet transform. In this paper, compared and characterized performance of noise reduction

우리나라 現行 財務狀態變動表의 有用性에 관한 實證的 檢證

朴範鎬,蔡奎學,孫 敏,李 悠,吳瑗善,全夏成 홍익대학교 경영연구소 1988 경영연구 Vol.12 No.-

웨이브릿 변환 영역 적응필터에 의한 유한 임펄스 응답 필터시스템 확인

박순규,박남천,이수흠 慶南大學校 附設 工業技術硏究所 1998 硏究論文集 Vol.15 No.2

기존의 시간영역직 접형 유한 임펄스 응답 적응필터는 그 구조가 매우 간단하기 때문에 여러 분야에 응용되고 있으나, 이 적응필터는 일반적으로 수렴률이 매우 늦다. 변환영역 적응필터는 적응 알고리듬의 수렴속도 증가를 위해 유익하게 사용된다. 웨이브릿 변환은 프로세스가 비정적인 경우에도 Karhunen-Loeve변환과 매우 유사하다. 그러므로 웨이브릿 변환된 출력의 자동상관 마트릭스는 거의 대각이며, 변환 영역에서 간단한 전처리를 하면 수렴률을 매우 향상시킬 수 있다. 또한 변환에 Harr 웨이브릿을 이용하면 곱셈없이 변환이 가능하다. 이 논문에서는 웨이브릿 변환 영역 적응필터를 구성하고, 이를 유한 임펄스 시스템 확인에 적용하였다. 컴퓨터 시뮬레이션 결과를 DET 영역 적응 유한 임펄스응답 적응필터에 의한 결과와 함께 나타내었다. The conventional time domain direct-form FIR filter has been used for a variety of application, since it presents a very simple implemention, however, in general, the convergence rate of this adaptive filter is very slow. The transform domain adaptive filter can be used advantageously to increase the speed of convergence of the adaptive algorithm. The wavelet transform behaves as a good approximation to Karhunen-Loeve(KL) transform even when the underlying process is nonstationary. Therefore, the autocorrelation matrix of the wavelet transformed output is nearly diagonal. By using a simple preconditioning in the transformed domain, the conditioning can be improved resulting in dramatic increase in the convergence rates. And by using the Harr wavelet, we can transform without multiplication arithmetic. In this paper, a wavelet transform domain adaptive filter has been constructed and applied to the FIR filter system identification. Computer simulation results are shown with the results obtained by the DFT domain adaptive FIR filter.

Percentage 算出의 方向에 對하여

朴淳圭 진주산업대학교 1970 論文集 Vol.5 No.-

In two dimensional table percentage is calculated generally in the direction of cause factor. According to the nature of sample, pro and con of calculating percentage was come to right. 1) When Sample represents the direction of cause factor, Cause and Effect rule can't be applied. 2) When Sample represents Total Sample, calculation is possible in any direction. 3) When Total Coum itself dose not represent Total Population, Total Colum can't be indicated.

代表値 算出의 問題에 關하여

朴淳圭 진주산업대학교 1969 論文集 Vol.3 No.-

There are not problems in the discrete variation, but there are problems in the continuous variation in teaching the representative value. I studied the case of the continuous variation in calculating the median value and high frequency, and mentioned the characteristic of the mean value, the median value and the high frequency, too. When the representative value is decided, we are needed to know the distributional figure and the purpose of using and select the suitable one, because there is not an ideal representative value, and the characteristics of the representative value are different.

統計學 發展過程의 考察

朴淳圭 진주산업대학교 1968 論文集 Vol.1 No.-

방광파열에 관한 임상적 고찰

박규백,문재선,김춘곤 朝鮮大學校 附設 醫學硏究所 1986 The Medical Journal of Chosun University Vol.11 No.1

We analyzed 23 patients with bladder rupture managed at Chosun Univercity Hospital during a 8 year period from January 1978 to December 1985. The results are as follows; 1. Among the 182 patients with genitourinary injury, the patient with bladder rupture are 23 cases(12.6%). 2. Age distribution of bladder rupture shows the most prevalent incidence in the age group from second to fourth decade, giving a rate of 52.2% of total 23 cases. 3. Traffic accident is the most frequent cause of bladder rupture, "which is occurred in 12 cases" (52.2%)of 23 cases. 4. The most frequent associated injury is the fracture of pelvic bone and the next are intestinal injury, urethral rupture and the fracture of upper and lower extremity. 5. The occurence of the intraperitoneal rupture is 6. 7times more than that of extraperitoneal rupture. 6. Transverse tearing is the most common tearing sliaps of bladder wall, which consist of 14 cases in 20 cases explored and the most common tearing diameters are between 5 to 10㎝. 7. In almost all cases, immediate primary anastomosis of bladder wall and indwelling urethal catheter, with or without auprapubic cystostomy are performed, except 3 cases who are managed with indwelling urethral catheter.