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광도가 내음성이 서로 다른 3 수종의 광합성 생리에 미치는 영향
김판기(Pan Gi Kim),이용섭(Yong Sub Yi),정동준(Dong Jun Chung),우수영(Su Young Woo),성주한(Joo Han Sung),이은주(Eun Ju Lee) 한국산림과학회 2001 한국산림과학회지 Vol.90 No.4
In this study, three tree species (Populus euramericana, Kalopanax pictus and Quercus serrata) exhibiting different levels of shade tolerance were employed to investigate photosynthetic responses to the lower light condition on forest floors. Chlorophyll contents, spectral properties and photosynthetic characteristics were examined by using the tree species grown under high light intensity (PPFD 920μmol m^(-2) s^(-1)) or low light intensity (PPFD 80μmol m^(-2) S^(-1)) . Plants grown under the low light intensity tended to have reduced leaf area, chlorophyll content per unit leaf area, light absorption and respiration in the shade intolerant tree species of P. euramericana. However, the shade tolerant species K. pictus and Q. serrata showed increased leaf area, chlorophyll content and net apparent quantum yield. Therefore, light absorption and light utilization efficiency were improved under the low light intensity. Also shade tolerant species maintained activities of photosystems and CO₂ fixation systems with little changes in low light intensity condition.
쌀 브랜드 STP 전략 -청주,청원지역 소비자를 대상으로-
조성주 ( Sung Ju Jo ),손찬수 ( Chan Soo Son ),이준배 ( Jun Vae Lee ) 한국식품유통학회 2013 食品流通硏究 Vol.30 No.1
The main objective of this study is to provide more reliable and defined marketing strategy for rice producers and brand operators based on consumer`s evaluation for rice brands. First, to analyze rice brand positioning map through consumer`s evaluation for rice brand with high accuracy and reliability. Second, to identify the characteristics by market segments divided by rice-brand attributes and to find out consumers` behavioral characteristics in each market segment. Third, to suggest brand positioning strategy based on the analysis of market segments` structure and the relative position of each brand in positioning map and image-vector map. In order to achieve these purposes, we used Fuzzy-MDS(Multi-Dimensional Scaling) model and represented rice brand positioning strategy. This study evaluates brand positioning across market segments. These results can provide brand firms(operators) with some strategic implications to offer more consumer-oriented rice products through systematic and effective brand management.