• 패션비즈니스
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• 제15권3호
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• pp.125-141
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• 2011

This paper is to focus the financial ratio analysis of the Korean textile and apparel companies due to fast changing domestic industry. Financial ratios are playing a pivotal role in management analysis to assess the present conditions to predict the future. Subjects are belonging to textile and apparel manufacturers based on Firm Classification Standard while registered as securities listed-firms or Kosdaq-listed firms under the Electronic Notification System of Korean Banking Supervisory Authority. 41 companies' data have been analyzed including 17 apparel companies and 24 textile companies. 14 representative financial ratios are analyzed. In this paper, financial ratios can be classified into four categories as follows: stability ratios, profitability ratios, growth ratios and activity ratios. The independent t-test was performed using SPSS 18 for a 10 year simple arithmetic average. The following conclusion has reached regarding aspects of management conditions and performances. When compared the ratios indicating stability, textile and apparel companies did not show much difference in debt ratio and the ratio of earning to interests. However, when compared the profitability ratios measuring the ability to produce incomes, apparel companies showed higher ratios than textile companies. Thus it is important to recognize financial characteristics of each industry.

• 한국인구학
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• 제14권1호
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• pp.35-46
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• 1991

Improvements in various health indices have been ushered in, along with soaring economic growth in the last few decades in Korea. Life span of Koreans at present stands at somewhere around age of seventies. It seems of worth to elucidate some facets of health profile of historic Koreans during Yi dynasty encompassing about five hundreds years between the 14th and 19th century. Datas on health of historic Koreans are meager with exception for sovereigns for whom royal archives have been preserved intact through centuries. Though the health environments for monarchs are, no doubt, incomparable to that of the grassroot levels during the same period, health profile of monarchs would facilitate to assess health indices for historic Koreans during Yi dynasty. Arithmetic average of life span of 25 consecutive Kings(omitted the last two Kings under Japanese control) is 44.6 years of age 81 year old for King Yongjo and 16 year old for King Danjong, representing two extremes. The principal causes of death are septicemia, subsequent to infections of soft tissue and ether organs(8 in number, one-thirds of all). Secondly, both epidemic disease and vascular accidents caused deaths of three Kings each. Two kings succumbed to diabets and one suicide. The causes for the remainder, eight kings are hardly ciarified. The monarchs who contributed in establishment of new Yi dynasty with highspirited and disciplined survied beyond their fifties and sixties. In contrast, those who reigned during mid - era of the dynasty at its culmination succumbed to death in their young adulthood, most likely due to their indulgence in court life.

• 한국물환경학회지
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• 제28권5호
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• pp.693-703
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• 2012

Load Duration Curve(LDC) is a useful tool for analyzing water quality characteristics under various stream flow conditions. This study investigated the methods to identify impaired waterbodies in the assessment of water quality goal attainment by using LDC for the management of Total Maximum Daily Loads (TMDLs). Three methods were proposed. Non-typical regime exclusion method is a method to exclude water quality observations in the non-typical extreme flow conditions in order to minimize the influence of non-ordinary water quality. Flow regime weighted average method is a method to calculate weighted mean water quality instead of arithmetic mean in order to consider water characteristics properly on stream flow regime in addition to the effect of Non-typical regime exclusion method. Load exceeded interval comparison method is a method to compare the intervals between the attained and non-attained load duration periods on the LDC. The assessment of water quality goal attainment can be performed more reasonably and precisely considering water quality variations on stream flow conditions by applying these proposed methods.

• 융합보안논문지
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• 제11권3호
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• pp.19-24
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• 2011

소프트웨어 고장 시간은 테스팅 시간과 관계없이 일정하거나, 단조증가 혹은 단조 감소 추세를 가지고 있다. 이러한 소프트웨어 신뢰모형들을 분석하기 위한 자료척도로 자료에 대한 추세 검정이 개발되어 있다. 추세 분석에는 산술평균 검정과 라플라스 추세 검정 등이 있다. 추세분석들은 전체적인 자료의 개요의 정보만 제공한다. 본 논문에서는 고장시간을 측정하다가 시간 절단이 될 경우에 미래의 고장 시간 예측에 관하여 연구 하였다. 시계열 분석에 이용되는 단순이동 평균법과 가중이동평균법, 지수평활법을 이용하여 미래고장 시간을 예측하여 비교하고자 한다. 실증분석에서는 고장간격 자료를 이용하여 모형들에 대한 예측값을 평균자승오차를 이용하여 비교하고 효율적 모형을 선택 하였다.

• 전자공학회논문지B
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• 제32B권11호
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• pp.1445-1454
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• 1995

In this study, we have developed a prototype of the automatic defects detection system for capsule inspection using the computer vision techniques. The subjects for inspection are empty hard capsules of various sizes which are made of gelatine. To inspect both sides of a capsule, 2-stage recognition is performed. Features we have used are various lengths of a capsule, area, linearity, symmetricity, head curvature and so on. Decision making is performed based on average value which is computed from 20 good capsules in training and permission bounds in factories. Most of time-consuming process for feature extraction is computed by hardware to meet the inspection speed of more than 20 capsules/sec. The main logic for control and arithmetic computation is implemented using EPLD for the sake of easy change of design and reduction in time for developement. As a result of experiment, defects on size or contour of binary images are detected over 95%. Because of dead zone in imaging system, detection ratio of defects on surface, such as bad joint, chip, speck, etc, is lower than the former case. In this case, detection ratio is 50-85%. Defects such as collet pinch and mashed cap/body seldom appear in binary image, and detection ratio is very low. So we have to process the gray-level image directly in partial region.

• 전기전자학회논문지
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• 제16권4호
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• pp.382-388
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• 2012

본 논문에서는 ARM Cortex-A9 듀얼코어 플랫폼에서 지원하는 병렬처리 기법 중 하나인 Advanced SIMD기반의 NEON을 적용한 H.264/AVC 고속화 움직임추정 방법론을 연구하였다. 다양한 움직임추정 방법 중 하나인 전역탐색기법에 NEON을 적용하여 각 매크로블록의 SAD 연산횟수를 1/4 감소시켰다. 해당 매크로블록의 픽셀 값들을 8개의 16bit NEON 레지스터에 할당하였고, NEON에서 지원하는 Intrinsic 함수를 사용하여 동시에 128bit 연산을 수행하였다. 이러한 방법으로 계산된 SAD 값들 중 최소 SAD 값을 가지고 정확한 모션벡터를 선정했다. 그 결과 영상의 크기 및 매크로블록의 크기에 따라 성능이 평균 30% 이상 향상되는 효과를 검증하였다.

• 가정과삶의질연구
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• 제10권2호
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• pp.245-261
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• 1992

The Purpose of this study is to find out ;Which is the recognition of housewives abut the credit cards as a financial tool\ulcorner by what kind of motive is the use made\ulcorner How important the using credit card in the financed to household\ulcorner For this purpose, a survey was conducted by interview using questionnaire. The data were analyzed by frequency , percentage, arithmetic mean, standard deviation, x2 -test, ANOVA, correlation, multiple regression using SPSS/PC+ linear structural relationship using LISREL VI program. the conclusion deduced through result of data analysis and the discussion are as follows; First, in the respondent housekeeping, monthly average repayment of credit card is about 1/3 of the living expenses. Second, the knowledge of respondents about credit card was low generally Third, respondents use credit card by the motive of circulating money rather tan the motive of convenience. Fourth , generally respondents are not overdue the charge of credit card, but the smaller the cost of living is or the larger the motive of using credit card, the more overdue the charge of credit card. Fifth, as a result of linear structural relationship among the information credit card, motive of use and management behavior, the motive of using credit card effect on the management of credit card more directly than the knowledge of credit card. Sixth, as credit card is spread widely on the future, the information of credit card will be important variable on the personal credit and the management of credit card will be more important in the household financial management.

• Structural Engineering and Mechanics
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• 제51권5호
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• pp.793-808
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• 2014

The goal of this study is to evaluate and design steel plates with optimal material distributions achieved through a specific material topology optimization by using a CCARAT (Computer Aided Research Analysis Tool) as an optimizer, topologically optimally updating node densities as design variables. In typical material topology optimization, optimal topology and layouts are described by distributing element densities (from almost 0 to 1), which are arithmetic means of node densities. The average element densities are employed as material properties of each element in finite element analysis. CCARAT may deal with material topology optimization to address the mean compliance problem of structural mechanical problems. This consists of three computational steps: finite element analysis, sensitivity analysis, and optimality criteria optimizer updating node densities. The present node density based design via CCARAT using node densities as design variables removes jagged optimal layouts and checkerboard patterns, which are disadvantages of classical material topology optimization using element densities as design variables. Numerical applications that topologically optimize reinforcement material distribution of steel plates of a cantilever type are studied to verify the numerical superiority of the present node density based design via CCARAT.

• Nuclear Engineering and Technology
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• 제42권1호
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• pp.9-16
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• 2010

Experimental examinations for evaluating fracutres were conducted by using transparent replicas of a single fracture in order to obtain the fracture data to contribute to the methodlogy on how to improve the definitaion of representative parameter values used for a parallel plate fracture model. Quantitative aperture distribution and quantitative tracer concentration data at each point in time were obtained by measuring the attenuation of transmitted light through the fracture in high spatial resolution. the representative aperture values evaluated from the multiple different measurement methods, such as arithmetic mean of aperture distribution measured by the optical method, transport aperture evaluated from the tracer test, and average aperture evaluated from the fracture void volume measurement converged to a unique value that indicates the accuracy of this experimental study. The aperture data was employed for verifying the numerical simulation under the assuption of Local Cubic Law and showed that the calculated flow rate through the fracture is 10%-100% larger than hydraulic test results. The quantitative tracer concentration data is also very valuable for validating existing numerical code for advection dispersion transport in-plane heterogeneous fractures.

• Elastomers and Composites
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• 제45권4호
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• pp.280-285
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• 2010

CIIR에 BR, SBR 및 NBR을 다양한 조성으로 혼합하여 블렌드물의 마찰계수와 내마모특성 및 물리적 특성 변화 등을 검토하였다. 영구압축줄음율 측정에서 블렌드비율 25%에서 가장 높은 값을 나타내어 변형에 대한 저항 특성이 가장 낮은 것으로 나타났다. SBR, NBR, BR이 CIIR에 블렌딩됨에 따라 블렌드물의 마찰계수는 산술평균적으로 저하하는 경향을 나타내었다. 마찰력 향상을 위하여 BR에 CIIR을 블렌딩하는 경우 마찰계수 증가에 의한 접지력 향상보다는 내마모 성능 저하에 의한 마이너스효과가 더욱 큰 것으로 나타났다.