• KDI Journal of Economic Policy
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• 제12권1호
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• pp.3-29
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• 1990

60년대 전반 이후의 수출주도형(輸出主導型) 공업화(工業化)을 통한 고도성장(高度成長)은 국내산업(國內産業) 또는 업종간(業種間) 성장율(成長率)의 차이로 인해서 상당한 산업구조변화(産業構造變化)를 수반했다. 따라서 본 논문에서는 산업연관표체계(産業聯關表體系)를 사용하여 우리나라의 장기적(長期的)인 산업성장(産業成長) 및 구조변화(構造變化)의 요인(要因)을 분석해 보고자 한다. 즉 과거(過去)의 장기적(長期的)인 성장과정(成長過程)에서 국내수요(國內需要), 수출(輸出), 수입대체(輸入代替)와 기술변화(技術變化)는 산업별 생산성장(生産成長)에 각각 얼마만큼 기여(寄與)했나 하는 것을 측정해 보고자 한다. 이러한 측정은 총량적(總量的) 경제수준(經濟水準)뿐만 아니라 세부산업별(細部産業別)로도 이루어질 수 있기 때문에 한국경제(韓國經濟) 전반(全般) 및 공업부문(工業部門)의 세부적(細部的) 변화과정(變化過程)에 관한 풍부한 분석자료(分析資料)를 제공할 것으로 기대한다.

• 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.

• Korean Journal of Mathematics
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• 제29권1호
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• pp.105-120
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• 2021

In this paper, we extend some results related to the growth rates of entire functions by introducing the relative logarithmic order ����g(f) of a nonconstant entire function f with respect to another nonconstant entire function g. Next we investigate some theorems related the behavior of ����g(f). We also define the relative logarithmic proximate order of f with respect to g and give some theorems on it.

• 한국대기환경학회지
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• 제20권2호
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• pp.161-174
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• 2004

Aerosol formation and growth by water vapor reactions were investigated in a 2.5 -㎥ indoor smog chamber filled with the unfiltered ambient air. The relative humidity of test ambient air was elevated at 59～64% or 84～88% by adding water vapor. The aerosol number size distribution and the concentrations of $O_3$, NO, NO$_2$, and SO$_2$ were measured during the experiments. The $O_3$ and NO$_2$ gases were well reacted with the water vapor at high relative humidity of 84～88%, and the reaction rates of these gases seemed to be decreased at low relative humidity of 59～64%. The formation and condensational growth phenomena of ambient aerosols by water vapor reactions were observed in a Teflon bag, depending strongly on the initial particle size distribution. The water vapor reactions might be affected by the contents of oxidants produced by photochemical reactions under sunlight.

• Journal of Microbiology
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• 제33권3호
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• pp.208-214
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• 1995

The effects of various 2, 4-D-degradative plasmids on the axenic growth patterns, the degradation phenotypes, and the competitiveness of different host bacteria were evaluated in liquid cultures; the organisms and plasmids used were Alcaligenes eutrophus JMP134/pJP4, Alcaligenes paradoxus/p2811, Pseudomonas pickettii/p712, pJP4, and p712 or p 2811 exhibited very different restriction fragment profiles in restriction endonuclease digests. These plasmids were transferred to the recipients (P. cepacia and Alcaligenes JMP228) at relatively high frequencies ranging from 8.9 $\times$ 10$^3$ to 1.6 $\times$ 10$^5$ per donar cell. In the axenic liquid cultures the fast-growing strains, such as P. pseudomallei/p745 and P. cepacia/pJP4, exhibited short lag periods, high specific growth rates, and high relative fitness coefficients, while the slow-growing strains, such as P. pickettii/p712 and A. paradoxus/p2811, had long lag periods, low specific growth rates, and low relative fitness coefficients. Depending on the type of plasmid containing the genes for the 2, 4-D pathway, some transconjugants exhibited intermediate grwoth patterns between the fast-growing strains and the slow-growing strains. The plasmid and plasmid-host interactions determined specific growth rate and lag time, respectively, which were shown to be principal determinants of competitiveness among the strains, but relative fitness coefficient derived from the axenic culture was not always predictive for the mixed culture condition.

• 한국초지조사료학회지
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• 제14권2호
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• pp.93-98
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• 1994

경사방향의 차이가 Orchardgrass가 우점된 산지초지에서 목초의 월동성에 미치는 영향을 조사하였다. 1. 원동전 식물체의 초세는 1번초의 생육과 포장생존율 및 월동성에 미치는 영향이 컸다고 생각된다. 2. 상대경수출현율당 개체중(DW/RTAR)은 초세와 유의한 부의 상관을 나타낸 반면에, 월동전 개체당 경수, 1번초의 개체당 경수, 개체중, 포장생존율 및 상대경수출현율과는 유의한 정상관을 나타내었다. 3. 월동성은 서>북북서>동남동>남남서 사면의 순으로 높았다.

• The Korean Journal of Ecology
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• 제16권4호
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• pp.417-428
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• 1993

백목련의 가지 생장유형은 두 가지의 생장전략에 의해 이루어지는 것으로 보인가. 하나는 환경 극복 전략이고 다른 하나는 생명 유지 전략으로 구분할 수 있는데, 이러한 전략은 한 그루의 나무 안에서도 같이 일어나고 있었다. 가지의 생장율은 조도에 밀접한 관련이 있었고(P<0.001) 물리적인 접촉의 유무와도 상당히 관련(P<0.01)되어 있는 반면에 방위별로는 우의차가 없었다. 상대 조도 1%미만의 경우는 주변 가지들과 거의 물리적인 접촉으로 대부분 생장이 제한되어 있었고, 10% 초과의 경우는 접촉에 의해 생장 제한이 거의 일어나지 않았다. 가지간의 물리적인 접촉의 유무는 분지율에 영향을 미치고 있었으나(P<0.05), 분지율은 조도에 무관하고, 방위별로도 유의차가 없었다. 생장 초기에는 주가지에서 부가지로의 물질 분배비가 크게 나타났으나 나무가 자라면서 환겨의 제한을 받게 됨에 따라 분배비는 다양하고 때로는 아주 적은 값을 보이기도 하였다. 이러한 다양한 생장율, 즉 물질의분배비의 다양(0.16~0.98)은 생장과 더불어 빚어지는 제약을 극복하여 태양 에너지를 최대한 효율적으로 흡수하기 위한 가지의 배치로 해석되며, 주어진 환경하에서 백목련이 택하는 최적의 생장 전략인 것으로 생각되다.

• Mycobiology
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• 제37권1호
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• pp.28-30
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• 2009

This study was aimed at evaluating the growth promoting effect of symbiotic algal polyol (ribitol) and plant hormones on the lichen-forming fungi (LFF), Ramalina farinacea (CH050010 and 40403) and Ramalina fastigiata. The addition of ribitol to basal (malt-yeast extract) medium enhanced the relative growth rates of all three LFF. R. farinacea (CH050010), R. farinacea (40403) and R. fastigiata (H06127) showed 35.3%, 29.0% and 29.3% higher growth rates, respectively, compared to the control. IBA (indole-3-butyric acid) and TIBA (2,3,5-tridobenzoic acid) also increased growth rates of the LFF by 34 to 64% and 7 to 28%, respectively, compared to the control. The combination of ribitol with IBA or TIBA synergistically increased the growth of all LFF. For example, ribitol and IBA treatments increased growth rates of R. farinacea (CH050010), R. farinacea (40403) and R. fastigiata (H06127) by 79.4%, 40.3% and 72.8% in, respectively, compared to those grown on the basal medium. The stimulating effect of ribitol and IBA on the LFF growth induced vertical development of the fungal mass in culture. We suggest that lichen-forming fungal growth of Ramalina lichens can be stimulated aposymbiotically by supplementing polyols and plant hormones to the basal medium in the mass production of lichen secondary metabolites under large scale culture conditions.

• 한국콘텐츠학회논문지
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• 제13권6호
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• pp.236-245
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• 2013

본 연구는 노인자살증가의 원인을 파악하기 위해 거시적인 측면의 관점에서 노인자살률과 사회 경제적요인의 관련성을 분석하였다. 노인자살의 이론적 배경은 사회학적 관점과 경제학적 관점에 기초하여 설명하였다. 노인자살률의 경제적 요인에는 경제성장률과 실업률 그리고 노인의 경제활동참가율과 상대적 빈곤율(소득불평등율)을 포함하며, 사회적 요인의 범주에 속하는 변수로는 사회복지지출비, 이혼율, 그리고 고령화비 증가율과 노인부양비를 포함한다. 주요 연구결과로는 첫째, 노인의 경제활동참가율이 낮을수록 노인자살률이 높아지는 경향이 있었다. 둘째, 사회복지지출비가 낮을수록 노인자살률이 증가하는 것으로 나타났다. 셋째, 상대적 빈곤율, 고령화비 증가율, 그리고 노인부양비는 공히 이들이 증가할수록 노인자살률도 동시에 증가하는 것으로 나타났다. 끝으로 한국노인자살률의 지속적 증가를 예방하기 위해서 거시적 차원의 사회 경제적 정책방안을 제언하였다.

• 한국초지조사료학회지
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• 제8권1호
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• pp.61-65
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• 1988

To examine the effects of light intensity on photosynthesis, corn and sorghum species were grown under shade cloths, which reduced light intensity by 25,50 and 75%. Photosynthetic rates were measured between 10 a.m. to noon on a clear day in early and mid - summer. 1. The degree of shading had a little effect on microenvironment. Air, soil and leaf temperatures were reduced as shade increased. 2. The degree of shading in early summer had relatively a little effect on photosynthesis of corn. However, the rates of photosynthesis in mid-summer decreased by 36%, 55% with relative light intensities of 50% and 25%, respectively. 3. The rate of photosynthesis was highly correlated with light intensity. The rates of photosynthesis with relative light intensities of 75,50 and 25% were decreased by 20, 40 and 5 4% in early summer, and by 17-53%, 36-64% and 5570% in mid-summer, respectively. 4. The 75% of light intensity had relatively little effect on dry matter yield of corn and sorghum species, however dry matter yield with 50 and 25% relative light intensities was decreased 17 and 36% in corn, 13-3 1 and 50-68% in sorghum species, respectively.