혼합물 실험에서 특이값의 영향을 평가하기 위한 그래픽 탐색적 자료분석 도구로서의 불꽃그림

장대흥,안소진,김영일,Jang, Dae-Heung,Ahn, SoJin,Kim, Youngil 한국통계학회 2014 응용통계연구 Vol.27 No.4

It is common to check the validity of an assumed model with the heavy use of diagnostics tools when conducting data analysis with regression techniques; however, outliers and influential data points often distort the regression output in undesired manner. Jang and Anderson-Cook (2013) proposed a graphical method called a firework plot for exploratory analysis that could visualize the trace of the impact of possible outlying and/or influential data points on individual regression coefficients and the overall residual sum of squares(SSE) measure. They developed 3-D plot as well as pair-wise plot for the appropriate measures of interest. In this paper, the approach was extended further to tell the strength of their approach; in addition, a more meaningful interpretation was possible by adding a measure not mentioned in their paper. This approach was applied to the mixture experiment because we felt that a detailed analysis of statistical measure sensitivity is required in a small experiment. 회귀모형을 이용하여 자료를 분석하는 경우 이상점이나 영향점과 같은 특이값들의 유무를 검정하는 회귀진단기법은 모형의 적합성을 체크하기 위한 필수적인 도구로 잡은 지 오래이다. 이러한 점들이 존재 하는 경우 회귀분석의 결과가 왜곡되어 해석이 된다. Jang과 Anderson-Cook (2013)은 불꽃그림이란 이름을 붙인 그림도구를 발표하였는데 관측값에 부여된 가중치를 1에서 0으로 변화함에 따라 이상점이나 영향점이 회귀계수 및 잔차제곱합(SSE)에 어떠한 영향을 미치는지 3차원 그림에 추적곡선을 그려 보았을 뿐 아니라 쌍으로 대비시켜 봄으로써 분석의 시각적인 효과를 증대시켰다. 본 연구에서는 더 나아가 이러한 시도가 기존 방법과 어떤 차이점이 있는지 2013년에는 반영치 않은 통계량을 포함해서 더 많은 해석이 가능한지 혼합물 실험 계획을 통해 다양한 통계량의 민감도 분석을 실행하였다. 왜냐하면 작은 혼합물실험인 자료인 경우 더욱 세밀한 통계량에 대한 민감도 분석이 필요하기 때문이다.

광양항의 관세자유지역 지정에 따른 물류거점으로의 발전방안 : with a special emphasis to customs free zone

장흥훈 한국물류학회 2004 물류학회지 Vol.14 No.3

최근 국제물류의 중요성이 강조되고 있으며 특히 국제간의 상품이동이 이루어지는 항만은 국제물류의 핵심을 이루고 있다. 세계 각 국에서는 주요항만을 중심으로 하여 자유항, 자유무역도시, 관세자유지역, 자유무역지역 등과 같은 것을 설치·운영하여 단일구역 내에서 다양하고 자유로운 국제물류 활동을 이행할 수 있도록 함으로써 자국 항만에 수출입물동량을 유치하여 국제무역을 증진시킬 수 있도록 지원하고 있으며, 세계적인 기업들도 이러한 관세자유지역 및 자유무역지역(자유무역지대)을 중심으로 국제물류활동을 활발히 수행하고 있다. 이러한 국제적인 추세에 따라 우리나라도 국제공항과 항만 등을 중심으로 21세기 동북아의 물류거점지대로 발전시키기 위해 관세자유지역제도를 도입하여 부산항과 광양항이 관세자유지역으로 지정되었고, 부산항과 광양항의 일부 배후지역, 인천국제공항이 관세자유지역으로 지정되었다. 본 논문은 광양항이 관세자유지역으로 지정점에 따라 광양항이 국제물류거점지로의 확립·발전시키기 위한 자체 여건에 대하여 고찰하고, 광양항 관세자유지역의 실태분석, 문제점과 한계성을 살펴봄으로써 이에 대한 발전방안을 외국의 사례와 함께 비교·분석하였다. With the globalization of economy, there is keen competition among countries to be a logistics hub and companies are striving to be first in establishing logistics system centering on advantageous sites, especially airport and seaports, to perform supply, production and distribution. Gwangyang port has been designated as Customs Free Zone together with Pusan port from 1st Jan. 2002. However, the introduction of Customs Free Zone in Korea lagged behind other major countries and it has a lot of operational problems. This paper analyzes the above problems and presents various measures to activate Gwangyang Customs Free Zone as follows Benchmarking to promote Gwangyang Customs Free Zone, governmental support, introduction & logistics functions, early development of the hinterland, investment attraction into the area and diversified promotion & marketing activities.

비혈연간 신이식에서 HLA 교차반응군 부적합성이 이식신 생존률에 미치는 영향

장성수,오흥범,한덕종,박수길 대한임상병리학회 2000 대한임상병리학회지 Vol.20 No.6

S-밴드 레이다에서의 電磁波 現象에 關한 硏究

張宰成,高興眞,康富植 제주대학교 1993 논문집 Vol.37 No.-

. It is necessary to clarify radio duct properties and clutter in order to estimate propagation characteristics for radar system. Clutter generates by radar echos make difficult the detection of wanted target. Clutter echos limit the sensitivity of a radar receiver, and determining the range performance. For these circumstance, the optimum radar waveform and receiver must be designed by the other way which is considered only the receiver noise effect. In this paper, analysis radio duct properties, occurrence probabilities, land and sea clutter in a S-Band radar were investigated. The ground clutter-to-noise ratios, the target signal-to-noise ratios and the signal-to-noise-plus-clutter ratios are calculated by the parameters of a S-band radar.

Caliper 조립 Line의 자동화에 관한 연구

장성규,전언찬,박흥식 동아대학교 공과대학 부설 한국자원개발연구소 1995 硏究報告 Vol.19 No.2

In order to improve productivity, we have developed dedicated multi-product and wide variety of products lines suitable for respective automobile models. However, because of a sagging market, in recent years, the productivity of dedicated manufacturing lines has declined remarkably. We have developed a high speed and high-effciency flexible manufacturing line to maintain high productivity in spite of production volume fluctuations and frequent engineering changes. This development has been applied to an assembly line of the caliper.

고속 자동 얼굴 분할

김장원,김창석,이흥복 明知大學校 産業技術硏究所 1995 産業技術硏究所論文集 Vol.14 No.-

In this study, we proposed the algorithm of the fast automatic face segmentation using mu1ti1evel thresholding and statistical projection analysis. The automatic searching algorithm of thresho1ding value extracted the thresholding value of brightness that is formed background region, face region and hair region from input image of bust without illumination, background region, face region and hair region from input image of bust without illumination, background and face size. The statistical projection analysis decide the brightness of multilevel thresho1ding image to horizontal and vertical direction. And this algorithm extracted elliptical type block of face from face region in order to reduce the background region and hair region efficiently. In this result of experiment, this proposed algorithm was peformed with real time and automation without environment variance of input image nearly. And this proposed algorithm is excellent to extract only the face region.

항갑상선제로 치료한 Graves씨병의 재발에 관한 임상적 고찰

노흥규,장준 충남대학교 의과대학 지역사회의학연구소 1989 충남의대잡지 Vol.16 No.2

Clinical differnece between 13 remitted and 9 non-remitted patients with Graves’ disease treated with antithyroid drug for about 2 years were analysed. The results were as follows: 1. Mean duration of treatment between remission group (22.1±2.28 months) and non-remission group (22.4±4.19 months) were not significantly different (P>0.1), and no difference for sex between groups. 2. Mean duration of normalization of goiter size in remission group (18.77± 2.18months) was no significantly different from non-remission group (20.14±4.25 months) (P>0.1). 3. Serum TBII activity in Graves’ disease in remission (14.14±5.79 months) was higher than non-remitted Graves’ disease (9.49±5.05%), but significant difference were not noted(P>0.01). 4. Mean serum TSH value in non-remitted patients (0.19±0.14μU/ml) was significant lower than that of Graves’ disease in remission (1.39±0.49μU/ml) (P<0.05). The above results indicate that there were no clinical difference between Graves’ disease in remission and non-remitted Graves’ disease except serum TSH value measured by IRMA, which is the most reliable index of estimating the prognosis.

1. 06㎛ Nd : YAG Laser를 이용한 요추간판탈출증의 경피적 수핵감압술

이흥선,변박장,최순관,신원한,권귀향,이인수,이경석,김범태 순천향대학교 1994 논문집 Vol.17 No.4

The 1.06㎛ Neodymium-YAG Laser(800 micron hemisherical) is revealed a useful tool for percutaneous laser disc decompression(PLDD). Especially PLDD would be applied to the management of lumbar disc herniation with minimal intervention. Total irradiated energy to one level of disc space was bout 1000 to 2000 joules. We performed this method at 10 levels, in 7 cases of patients, consisting of 4 males and 3 females with an average age of 37.7 years. Five cases showed excellent and good results, were observed. In two cases, open surgery was required because of unsatisfactory results. The best results were obtained in the protrusion type of disc herniation. We have summarized some advantages of PLDD: a) safe and simple procedure in an outpatient setting, b) avoiding general anesthesia, late spinal instability, c) possibility of repetitive use.

燃料電池用 直流 電力 變換機 開發

崔璋浩,成世眞,李興浩 忠南大學校 産業技術硏究所 1991 산업기술연구논문집 Vol.6 No.2

This paper deals with a Power Conversion System for Fuel Cell. The system consists of Chopper, Inverter and Control Unit. Chopper boosts the output voltage of Fuel Cell and controls reactive power. Inverter converts DC into Ac and controls active power. Controller is realized by the Software Method using a 8031AH one-chip Microprocessor. Simulated results are consistent with experimental results.

FET형 반도체 마이크로센서 개발(Ⅱ)

손병기,이흥락,박이순,조진호,이성필,최평,서화일,고성택,박재윤,서장수,김창수 경북대학교 센서기술연구소 1994 연차보고서 Vol.1994 No.-

현재 의료진단, 화학공정의 모니터링이나 환경공학적 감시 및 제어 등의 분야에서 사용되고 있는 기존의 센서는 고가이며 용적이 클 뿐만 아니라 분석시간이 길고 사용하기 까다로운 것 등 여러 가지 문제점이 있다. 또한 측정환경에 영향을 주지 않을 만큼 충분히 작으며 빠른 분석시간을 가진 센서를 필요로 하고 있다. 본 연구에서는 기존의 센서들의 난점을 극복할 수 있는 새로운 형태의 FET형 전해질(electrolyte : H^+, K^+, Ca^2+, Na^+)분석 시스템, 용존가스(O_2, CO_2)분석 시스템의 개발을 중점적으로 추진하며, FET형 압력센서, 습도센서, 방사형 온도센서 등의 개별 FET형 센서에 관한 연구도 병행하고자 한다. Recently various kinds of sensors have been developed, being applicated to their own purpose. There are lots of difficulties to apply them to measurements in which the real-time monitoring is required without disturbing the surrounding environment. FET type semiconductor sensors, fabricated by the semiconductor integration technologies, have many advantages for their miniaturization, standardization, mass-production and in vivo/in situ monitoring. They also hold a very proper configuration for multi-functional sensors or integrated smart sensors, and wide availability by forming various kinds of physical or chemical sensing materials onto their sensing gates.