• Corrugated packaging logistics
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• v.8 no.39
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• pp.140-141
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• 2001

닷컴기업의 열풍이 식으면서 대부분의 오프라인 기업들은 인터넷이 기업활동에 별 영향을 미치지 않을 것으로 생각하게 되었다. 하지만 인터넷의 파괴력을 과소평가하는 기업은 살아남기 힘들것이다. GE의 책 웰지 회장은 ''시장의 변화속도가 조직의 벼화속도보다 바르면 죽음이 다가온 것이다''라고 말했다. 인터넷은 비즈니스와 비즈니스 환경에 엄청난 변화를 가져오고 있다. 인터넷은 기존의 비즈니스 모델을 무력화시켰다. 원가구조를 바꿨으며 구매자와 판매자를 포함해 모든 거래 당사자간의 관계를 재편성시켰다. 이러한 변화 속에서 살아 남을수 있는 방법이 바로 e비즈니스다.

• 프린팅코리아
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• s.53
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• pp.64-69
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• 2006

서울인쇄정보산업협동조합(이사장 이충원)은 지난 10월16일 인쇄정보센터 7층 강당에서 조달청 물품구매제도와 관련한 설명회를 개최됐다. 이날 설명회는 서울지방 조달청 혁신담당팀 박희경 계약전문관의 '나라장터 운용방법'과 조달청 중앙구매사업단 일반물자팀 설태웅 사무관의 '물품구매 적격심사제도 설명회'라는 2가지 주제로 진행됐다. 이에 본지에서는 인쇄업관계자들의 이해를 돕기 위해 조달청 물품구매 적격심사 부분을 요약, 게재한다.

• Science of Emotion and Sensibility
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• v.14 no.2
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• pp.269-278
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• 2011

This paper illustrates the inter-relationship between the theta/alpha ratio of the EEG signal and multiple HRV related parameters associated with the cardiovascular system response during event-related stimuli. Both EEG and PPG signals were simultaneously recorded in 21 healthy subjects. All subjects had their attention focused on the CNT program for nine minutes. Time-frequency analysis was applied to the EEG and PPG signals. The theta/alpha ratio was extracted from the EEG results, and the HRV features, including beat interval(1), SDNN(2), RMSSD(3), NN50(4), LF(5), HF(6), and LFIHF(7), were extracted from the PPG. Through multiple linear regression, the relationship ($R^2$) between the multiple combined features and the theta/alpha rhythm was identified. As a result, the combinations of $R^2$($R^2=0.253$; seven dimensions) and the theta/alpha ratio indicated a higher inter-relationship value than those of other combinations. The combinations of features that were greater than three dimensions, based on {SDNN(2), HF(6)}, generally showed higher $R^2$ value. We demonstrate that the high dimensional combinations had a higher correlation than did the low dimensional combinations.

• Environmental and Resource Economics Review
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• v.29 no.2
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• pp.145-170
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• 2020

This study analyzes the dependence structure between energy (crude oil, natural gas, coal) prices and economic (real and financial) uncertainty. Summary of the results of the dependence structure between energy prices and economic uncertainty analysis is as follows. First, the results of model selection show that the BB7 copula model for the pair of crude oil price and economic uncertainty, the Joe copula model for the pair of natural gas price and economic uncertainty, and the Clayton copula model for the pair of coal price and economic uncertainty were chosen. Second, looking at the dependency structure, it showed that the pair of energy (crude oil, natural gas, coal) prices and real market uncertainty show positive dependence. Whereas, the only pair of financial market uncertainty-crude oil price shows positive dependency. In particular, crude oil price was found to have the greatest dependence on economic uncertainty. Third, looking at the results of tail dependency, the pair of real market uncertainty-crude oil price and pair of real market uncertainty-natural gas price have an asymmetric relationship with the upper tail dependency. It can be seen that the only pair of financial market uncertainty-crude oil represents asymmetric relationships with the upper tail dependencies. In other words, combinations with asymmetric relationships have shown strong dependence when negative extreme events occur. On the other hand, tail dependence between economic uncertainty and coal price be not found.

• Applied Chemistry for Engineering
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• v.21 no.4
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• pp.357-365
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• 2010

Combinatorial synthesis, which has been adopted as an efficient method for deriving a leading compound in pharmaceutical chemistry, is recently being applied in various fields along with the rapid development of analysis and examination technology. It is especially attracting much attention as an efficient strategy to secure various potent compounds rapidly in the areas of developing new materials where the relationship between the chemical structure and the property is not revealed. Several reports and reviews have already been published for the combinatorial chemistry and combinatorial synthesis. This report briefly introduces trends in the combinatorial development of new materials and discusses the cases of developing organic luminescent materials.

• Korean Journal of Remote Sensing
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• v.23 no.6
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• pp.521-528
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• 2007

The overall objective of this research was to investigate various combination of segmentation parameters and to improve classification accuracy of object-oriented classification. This research presents a method for evaluation of segmentation parameters by calculating Moran's I and Intrasegment Variance. This research used Landsat-7/ETM image of $11{\times}14$ Km developed area in Ansung, Korea. Segmented images are generated by 75 combinations of parameter. Selecting 7 combinations of high, middle and low grade expected classification accuracy was based on calculated Moran's I and Intrasegment Variance. Selected segmentation images are classified 4 classes and analyzed classification accuracy according to method of objected-oriented classification. The research result proved that classification accuracy is related to segmentation parameters. The case of high grade of expected classification accuracy showed more than 85% overall accuracy. On the other hand, low ado showed around 50% overall accuracy.

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2006.05a
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• pp.116-121
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• 2006

광범위한 지역의 자연환경 정보를 파악하기 위하여 위성 영상자료를 이용하는 것이 적합하지만 선행되어야 할 것은 이러한 위성영상자료를 이용하기 위한 지상에서의 내부 실험과 현장실험을 통한 기초적인 모델식을 만드는 것이 중요하다. 이를 위하여 위성영상자료와 실측수질인자들의 상관관계를 조사하는 것이 보다 정확하고 객관적인 평가 방법이 될 수 있다. 따라서 대기의 영향이 없는 실험실내에서 순수한 담수와 해수를 이용하여 Landsat ETM 영상자료의 어느 밴드가 클로로필a 농도파악에 적합한가를 평가하고자 하였다. 그 결과 밴드조합 중 가장 높은 상관관계를 보인 최적밴드는 담수에서 (83-B4)/B2이고, 해수에서는 (82+B4)/B3로 이 때의 상관계수가 각각 0.9747, 0.9892이므로 향후 이 밴드를 조합하여 위성영상 평가 시 사용하는 것이 유효할 것으로 생각된다.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2006.05a
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• pp.193-197
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• 2006

본 연구는 감성 공학적 접근법을 사용하여, 벽지의 디자인 요소와 소비자의 감성과의 관계를 정량적으로 규명하는 것을 목표로 한다. 문헌조사, 인터뷰 전문가 의견 등을 종합하여, 총 13개의 주관적 감성 변수(6개의 시각적 변수, 7개의 촉각적 변수) 와 4개의 벽지 디자인 요소(color, texture pattern, embossing depth, gloss)들이 추출되었으며, 최종 목표 감성은 '고급감'으로 정하였다. 9점 척도와 100점 척도으로 구성된 설문지를 통하여, 28개의 샘플 벽지에 대해서 30명의 목표 고객들을 대상으로 감성 평가 실험을 실시하였고, 주성분 회귀 분석, 수량화 이론 등을 이용한 분석을 통하여, 소비자의 감성과 디자인 요소와의 관계를 정량적으로 분석했으며, 고급감을 향상시킬 수 있는 감성 변수 조합과 디자인 요소 조합을 규명하였다.

• Journal of Sericultural and Entomological Science
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• v.36 no.1
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• pp.8-25
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• 1994

The study was conducted to obtain the genetic information on heterosis and combining ability of the quantitative characters for F1 hybrid breeding in silkworms. Six parental varieties and each set of 30 diallel crosses in F1's were used as materials, and bred on the randomized complete block design with three replications. Fourteen characters were observed with the twenty samples in each tray. The data were analyzed for (1) heterosis and combining ability in F1 hybrid. The heterosis in the weight and the length of cocoon showed positively high at 24.51%, and 23.4%, respectively and the weight of the whole cocoon as well as the weight of the whole cocoon layer showed a siginificant heterosis ranging from 15.56% to 15.71% and from 17.14% to 19.01%, but the fifth and the total instar period showed negative heterosis. It was found that the combination between, C70XRomogua and N9 X Romogua showed highly a negative heterosis on the fifth instar period and for the cocoon weight. The female of N9+Sansuian and the male of Romogua X Sansurian have a high heterosis effect, on the cocoon shell weight, and Sansurian X Romogua(reciprocal) on the length and the weight of cocoon filament with no regard to sexuality. The significant maternal and cytoplasmic effect on heterosis of the cocoon weight and the cocoon shell weight were observed with the combinations, N9 X C5, N63 X C70 and on the length of the cocoon filament with the combinations, Sansurian X N63, Sansurian X C5, Sansurian X C70 and N9 X C70, N63 X C70 on the weight of cocoon filament. As mean squared of GCA, SCA and RCA were significant with these combining ability for all characters resulted from additive and non-additive altogether and there is a significant difference between reciprocals. Sansurian showed a negative GCA effect on the fifth and total larval duration, but the higher positive GCA effects took places with varieties N9 and C5 on the length, width, weight of cocoon, cocoon shell weight, percentage of cocoon shell weight, length and weight of cocoon filament, percentage of raw-silk with no regard to both generations and silkworm sexuality. The values of SCA between the cross combinations varied generation-wise and sex-wise. It was shown that SCA value for the fifth instar period was highly negative for Sansurian X C70, Romogua X C70, Sansurian X C5, Romogua X C5, but it was positive effect on the cocoon weight, cocoon shell weight with N9 X C5, and C70 X Sansurian, on the length of cocoon filament with N9 X C5, Romogua X Sansurian on the weight of cocoon filament between Romogua and N63 and on the percentage of raw-silk between the combination of Sansurian X Romoga.

• KOREAN ASSOCIATION OF OCCUPATIONAL HEALTH NURSES
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• v.17 no.3
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• pp.48-52
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• 2010