• 자원ㆍ환경경제연구
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• 제10권4호
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• pp.569-589
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• 2001

We examine historical contributions of inter fuel substitution, changes in carbon efficiency and energy intensity, growth of economy and population to Korea's $CO_2$ emissions from 1970 to 1998 using the log mean weight Divisia index method. The study reveals that economic growth is the most significant factor to $CO_2$ emissions growth among the five factors. Changes in the fuel substitution and carbon coefficient are found negative contributors to $CO_2$ emissions growth. Energy intensity, which played dominant role in halting $CO_2$ emissions growth in the 1980s, began to play reversed role in the 1990s. When evaluated with the log mean Divisia index technique, deterioration of energy intensity in the 1990s is found worse and expected to contribute $CO_2$ emissions growth further.

• STI Policy Review
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• 제6권1호
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• pp.1-23
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• 2015

Based on the work of Anand et al. (2013) we measure inclusive income growth, which combines growth in gross domestic product (GDP) per capita and growth in the equity of the income distribution. Extending the work of Causa et al. (2014), we estimate a dynamic simultaneous structural equations model of GDP per capita and inclusive income on panel data for 63 countries over the 1990-2013 period. We estimate both equations in error correction form by difference GMM (generalized method of moments). Among the explanatory variables of the level and the distribution of GDP per capita we include R&D (research and development) expenditure per capita. In OECD countries we obtain a large positive effect of R&D on GDP. R&D is found to have a positive effect on the social mobility index but its impact on the income equity index at first decreases, then switches around to become slightly positive in the long run. In non- OECD countries, R&D is found to decrease inclusive income, mostly through a negative growth effect but also because of a slightly increasing income inequity effect.

• 한국약용작물학회지
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• 제28권3호
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• pp.221-228
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• 2020

Background: Angelica gigas Nakai, that belong to the Umbelliferae family, is one of the traditional medicinal plants in Korea. Its roots have been used to treat gynecological diseases. In this study, growth characteristics and index components were compared with the forest microclimate at several forest sites. Methods and Results: A. gigas was planted in three climatic zones according to the temperature (southern temperature zone - Hamyang, central temperature zone - Bonghwa, and northern temperature zone - Jeongseon) and growth characteristics were investigated in comparison with the forest microclimate. Our results indicated that the root diameter and length, and fresh and dry weight were the highest in Jeongseon. The total content of decursin was the highest in Jeongseon (9.52%), followed by those in Hamyang (8.07%) and Bonghwa (7.48%), respectively. Additionally, the yield of decursin (1.39 g) was the highest in Jeongseon. Conclusions: The yield and index components were influenced by the microclimate in the forests, and it was assumed that high altitude and low temperature affected the increase in growth and index components. These results will be useful as basic data to study the correlation among environmental conditions, growth, and index components.

• 한국토양비료학회지
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• 제50권5호
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• pp.409-421
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• 2017

Recently Unmanned Aerial Vehicle (UAV) technology offers new opportunities for assessing crop growth condition using UAV imagery. The objective of this study was to select optimal vegetation indices and regression model for estimating of rice growth using UAV images. This study was conducted using a fixed-wing UAV (Model : Ebee) with Cannon S110 and Cannon IXUS camera during farming season in 2016 on the experiment field of National Institute of Crop Science. Before heading stage of rice, there were strong relationships between rice growth parameters (plant height, dry weight and LAI (Leaf Area Index)) and NDVI (Normalized Difference Vegetation Index) using natural exponential function ($R{\geq}0.97$). After heading stage, there were strong relationships between rice dry weight and NDVI, gNDVI (green NDVI), RVI (Ratio Vegetation Index), CI-G (Chlorophyll Index-Green) using quadratic function ($R{\leq}-0.98$). There were no apparent relationships between rice growth parameters and vegetation indices using only Red-Green-Blue band images.

• 수산경영론집
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• 제36권2호
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• pp.97-120
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• 2005

This study focused on manufactures of meat and fish products among food manufactures, made a time series data for the period from 1983 to 2002, and applied the data to Hecksher-Ohlin model to analyze the elements of pattern of export in food processing industries of Korea. The results are as follows; First, the average annual growth rate of constant exports has increased for meat product and fish product industries in Korea. But, for fish product industries, it has decreased at large since the mid-1990s. Second, the average annual growth rate of physical capital index has increased for meat product and fish product industry, The rate has been more higher for fish product industry than for meat product industry. Third, the average annual growth rate of labor index has decreased for both meat and fish products industries. Fourth, physical capital index has had no significant impact on constant exports for meat product industry, while labor index has had a significant impact on it. Fifth, physical capital index has had a significant impact on constant exports for fish product industry, while labor index has had no significant impact on it.

• 한국작물학회지
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• 제45권1호
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• pp.1-5
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• 2000

Leaf area is critical for crop light interception, and thereby has a substantial influence on crop yield. This experiment was conducted to characterize the development of soybean [Glycine max (L.) Merr.] leaf area. Plastochron index and leaf relative growth rate of Jackson was contrasted with the PI416937, which also has demonstrated tolerance to drought. First, plastochron ratio (PR) and plastochron index (PI) were evaluated in greenhouse to compare the leaf growth rate between two genotypes under well-watered condition. There was reasonable constancy of PR between two genotypes. The PR means of Jackson and PI416937 were 0.41 and 0.44, respectively. A fairly smooth increase of PI during vegetative stage was observed. Second, the relative growth rates were graphed against leaf area, normalized with respect to final leaf area, under well-watered and water-deficit conditions. Leaf growth was sustained longer in well-watered condition than water-deficit condition and there was a sizable proportion of leaves which was ceased earlier their growth in water-deficit condition compared to well-watered condition. The leaf relative growth rate of Jackson until leaves had completed at 45% of their growth during water deficit period was higher than that of PI416937.

• 보건행정학회지
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• 제5권1호
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• pp.132-160
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• 1995

This study purported to acquire information necessary to improve the management of general hospitals. It tried to determine major indices which represent managerial performance of general hospitals and to identify the managerial characteristics of general hospitals which affect the major financial indices. Eighty-eight hospitals were chosen from 188 hospitals which were subject to standardization audit by the Korean Hospital Association. The results of a discriminant analysis are summarized as followings. First, when a single index was used to measure managerial performance of the sample hospitals, the ration of net profit to total capital was the best index and its discriminant power was 58.14%. The ratio of the number of boardmen((M. D.) and average daily medical cost were highly related to this index. Second, when two indices were used, income growth rte and the ration of net profit to total capital had the highest discriminant distinction ability. Their discriminant power was 61.9%. In this case, the ratio of the number of boardmen(M. D.) was significantly and highly related to the indices. Third, when all three indices-income growth rate, the ration of net profit to total capital and quick ratio - were used together, a discriminant function was statistically insignificant. Therefore, using all three indices was not useful in measuring managerial performance of the sample hospitals. In conclusion, using two indices-income growth rate and the ration of net profit to total capital-was better in measuring manegerial performance of general hospitals than using a single index. The independent variable which affected these indices was the ration of the number of boardmen. The discriminant function was : $D_{GI}=2.77+4.832\times(the ratio of the number of boardmen)$ *G=growth index(income growth rate) *I=profit index(the ration of net profit to total capital)

• 농업생명과학연구
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• 제43권4호
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• pp.9-14
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• 2009

본 연구의 목적은 충남 오서산지역 소나무림을 대상으로 전반적인 수고생장 패턴과 지위지수식을 추정하고자 한다. 조사대상 지역은 충남 보령시와 청양군 일대의 소나무림을 대상으로 총 7개소의 조사지를 선정하여 매목조사를 실사하였으며, 이 중에서 총 21본의 표본목을 벌도하여 원판을 채취하였다. 채취한 원판들은 1/100mm의 정밀도를 가진 정밀연륜분석기(Model: DTRS-2000)를 사용하여 1년 단위의 수고, 직경, 재적 등의 생장량을 계산하였다 본 연구에서는 총 181개의 수고-수령 관측치를 사용하여 Schnute의 생장함수식에 적용하였고 일반적인 수고생장의 패턴을 추정하였으며, 또한 이를 이용하여 기준임령을 30년으로 한 동형의 지위지수 추정식을 유도하였다. 본 연구에서 제시된 수고 및 지위지수 추정식은 충남지역에서 소나무림이 가장 많이 분포하고 있는 오서산지역 소나무림의 생장을 파악하는데 중요한 정보를 제시해 줄 것으로 사료된다.

• 한국초지조사료학회지
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• 제43권2호
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• pp.103-108
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• 2023

본 연구는 드론의 초분광장치를 이용하여 이탈리안 라이그라스 생육기간 중의 파종계절에 따른 식생지수 변화 및 생산성을 조사하였다. 수량성을 조사한 결과, 봄파종구의 건물수량이 가을파종구의 약 52%였으며 초장은 유의적으로 차이가 없었다. 식생지수를 산정하여 연속적인 패턴을 분석한 결과, 가을파종구의 대부분 식생지수가 시간이 지날수록 낮아지며, 봄파종구는 높아지는 유형을 보였으나 RGRI는 반대의 유형을 나타냈다. 재배기간에 따른 가을파종구의 건물수량과 RGRI의 상관성이 높았다.

• 기술혁신연구
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• 제19권3호
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• pp.85-114
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• 2011

본 연구는 경제가 가진 성장의 한계를 극복하고 새로운 도약의 계기를 마련하기 위해 새로운 성장동력산업의 발굴의 중요성을 인식하고, 미래성장동력으로서의 잠재력을 평가하기 위한 수단으로 한국미래기술지수(Korea Future Technology Index: KOFTI)를 개발하였다. 한국미래기술지수는 미래성장동력의 선정과 관련한 선행연구의 문제점을 보완하여 미래 성장동력 발굴의 객관성과 신뢰성 제고에 기여할 수 있는 종합지수이다. 본 연구는 경제성, 미래전략성, 기술영향력이라는 세 개별지수를 통합하는 한국미래기술지수를 설계하고, 이의 현장 적용성을 검증하기 위해 정부에서 추진 중인 신성장동력 사업의 62개 스타브랜드를 대상으로 실제 분석을 실시하여 13개 대표 스타브랜드를 도출하였다.