• 한국농림기상학회지
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• 제2권1호
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• pp.9-15
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• 2000

날씨ㆍ밤낮에 관계없이 자료를 취득할 수 있는 RADARSAT(C-밴드; 5.3GHz, HH 편광)의 후방산란계수와 태양광에 대한 반사값으로 데이터가 얻어지는 Landsat TM의 자료값(DN; Digital Numbers)을 이용하여 벼 생육과의 관계를 조사하였다. 벼 생육기간 동안 RADARSAT 3시기의 자료를 취득하여 보정 과정을 통하여 지표면의 특성이 잘 나타나는 후방산란계수 (backscatter coefcient)를 산출하였다. 연구지역에서 초장, 엽면적지수, 생체중, 건물중 등 벼의 생육변수를 조사하여 산출된 후방산란계수를 비교하였으며, Landsat TM은 논지역의 6시기 자료값을 산출하여 벼 생육과의 관계를 살펴보았다. 벼의 생육초기 담수상태일 때 논의 후방산란계수 범위는 -22dB--20dB이었고, 벼의 영양생장이 최대에 달했을 때 논의 후방산란계수는 -9dB--8dB 범위로 생육단계별로 뚜렷한 차이를 보였고 생육변수, 초장, 엽면적지수, 생체중, 건물 중 변화와 유사한 경향을 나타내었다 TM 밴드 1, 2, 3의 자료값은 생육후기로 갈수록 낮아졌다가 등숙기에 다시 높아졌고, TM 밴드 4의 자료값은 생육후기로 갈수록 높아졌다가 등숙기에 낮아지는 경향이었다. TM밴드 5와 7의 자료값은 생육기간 동안 계속 증가하여 건물중의 변화추세와 유사하였다. 시계열 RADARSAT과 Landsat TM자료를 이용한 벼 생육모리터링은 전망이 있는 것으로 보인다.

• Journal of Ecology and Environment
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• 제44권4호
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• pp.264-274
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• 2020

Background: Climate change has altered the various ecosystem processes including forest ecosystem in Himalayan region. Although the high mountain natural forests including treelines in the Himalayan region are mainly reported to be temperature sensitive, the temperature-related water stress in an important growth-limiting factor for middle elevation mountains. And there are very few evidences on growth performance of planted forest in changing climate in the Himalayan region. A dendrochronological study was carried out to verify and record the impact of warming temperature tree growth by using the tree cores of Pinus roxburghii from Batase village of Dhulikhel in Central Nepal with sub-tropical climatic zone. For this total, 29 tree cores from 25 trees of P. roxburghii were measured and analyzed. Result: A 44-year long tree ring width chronology was constructed from the cores. The result showed that the radial growth of P. roxburghii was positively correlated with pre-monsoon (April) rainfall, although the correlation was not significant and negatively correlated with summer rainfall. The strongest negative correlation was found between radial growth and rainfall of June followed by the rainfall of January. Also, the radial growth showed significant positive correlation with that previous year August mean temperature and maximum temperature, and significant negative correlation between radial growth and maximum temperature (Tmax) of May and of spring season (March-May), indicating moisture as the key factor for radial growth. Despite the overall positive trend in the basal area increment (BAI), we have found the abrupt decline between 1995 and 2005 AD. Conclusion: The results indicated that chir pine planted population was moisture sensitive, and the negative impact of higher temperature during early growth season (March-May) was clearly seen on the radial growth. We emphasize that the forest would experience further moisture stress if the trend of warming temperatures continues. The unusual decreasing BAI trend might be associated with forest management processes including resin collection and other disturbances. Our results showed that the planted pine forest stand is sub-healthy due to major human intervention at times. Further exploration of growth climate response from different climatic zones and management regimes is important to improve our understanding on the growth performance of mid-hill pine forests in Nepal.

• Journal of Nutrition and Health
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• 제5권4호
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• pp.161-168
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• 1972

The study was made to analyse the trend of food consumption in Korea from 1960 to 1970. Six kinds of statistical yearbooks in Korea was quoted for the basic data of this study. The results of this study are as follows: 1) The growth rate of populations in Korea from 1960 to 1970 was $2.0{\pm}0.4%$. 2) The production of foods in Korea was irregular by climate and natural phenomania. 3) There were the reverse trade phenomenia except vegetables, fruits and fishery products in export and import of food. 4) The monthly consumption expenditure per family in all city in Korea was \7,080 in 1963, and \29, 900 in 1970. 5) Food consumption in all expenditure was \3,840 in 1963, and \12,120 in 1970. 6) Percentage of food consumption of all expenditure was 54.2% in 1963, and 40.5% in 1970. 7) Cereal in food expenditure was \1,770 in 1963, and \5,060 in 1970. 8) By the growth of western style of life, there was a increase of western food consumption. 9) Engel index in Korea was 54.25 in 1963, and 40.46 in 1970. 10) We found slightly consumptional trend in plant origin food and highly trend in animal origin food. 11) Among the animal food consumption, chickens, canned meat, milk, eggs, and dried milk were highly consumed.

• 한국의류산업학회지
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• 제24권5호
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• pp.636-646
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• 2022

This study attempted to investigate the research trend of MLD studies which were issued from 2001 to March 2022 by research period/area/method/purpose through the analysis of academic theses and journals and use the results for the growth and of MLD. The study results found the followings: First, in terms of the results by research period, a total of 84 academic papers and journals were published: Phase 1 (15), Phase 2 (47), Phase 3 (22). Second, when analyzed by research area, 'cosmetology' was the highest with 19 papers in terms of the number of studies. In fact, the field of study accounted for the largest portion in all three phases. Third, when analyzed by research method, quantitative research showed the largest percentage in all three phases. Fourth, when analyzed by research purpose, a practical approach was dominant with 81 papers out of the total number of 84 (3 papers in theoretical approach). Concerning a domestic MLD-related research trend, it is an essential step for MLD study establishment and qualitative improvements. Such research analysis of MLD studies is meaningful in that it has not been attempted before. In addition, it is anticipated that the study results would be helpful in searching a direction for the academic growth and development of MLD.

• 무역상무연구
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• 제46권
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• pp.237-261
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• 2010

Resent East Asian economic growth has lead the increase of global trade volume and global logistics to the level of full-scale development as aiming to have quantitative growth in world trades in one hand and increasing mutual dependence among the East Asian Economic Bloc on the other. In other words, East Asian economic current growth is going along as connecting with 2 different process that are the increase of global trade volume and the technical development of global logistics system. And mutual dependence among the East Asian Economic Bloc shows the deepening trend in production and consumption. While having the flow of expansion in East Asian trade volume and logistics network in mind, this paper will study on trend in East Asian intra-trade and then study on change & tasks in the East Asian Logistics system.

• 한국기술혁신학회:학술대회논문집
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• 한국기술혁신학회 2010년도 춘계 학술대회 논문집
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• pp.3-14
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• 2010

Through time-series plots, we can see relatively stable trend of energy factor share and the decreasing trend of relative energy prices (to wages) in Korea. We can compromise these empirical facts with the following explanation: if elasticity of substitution between capital and energy is smaller than one(<1) in Korea, a change(decrease) in energy price can prevent income share of resources from rising in the process of economic growth. This is consistent with theoretical and empirical results that substitution between energy and capital is so difficult. From simple empirical analysis and limited information, we can carefully infer that, in the past in Korea, resource-specific innovation was performed widely. Finally, If we are to reduce the magnitude of "growth drag", we should decrease energy factor share. This can be accomplished by energy-augmenting technical progress in the case of elasticity of substitution less than 1 as in Korea.

• KDI Journal of Economic Policy
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• 제37권3호
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• pp.75-106
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• 2015

The primary goal of this paper is to explore the microeconomic foundation of Korean firms' adoption of foreign technologies. The paper also reviews the overall trend of international technology transfers to Korea. The period covered in this paper is Korea's high growth era, from the 1960s to the 1990s. The works of this paper center on the two questions of what characterizes foreign technologies which had been imported through licensing contracts, and which driving forces expedite technology adoption by firms. The Korean experience provides the context of success in the catch-up growth. The co-movement of technology imports with capital goods imports manifests Korea's effort to improve the technical efficiency toward the world frontier. Underlying this trend are firms' decisions to adopt new technologies. The paper shows that firms respond proactively to wage increases by adopting newer technologies and thus, in turn, increasing employment, which implies the existence of a virtuous interactive mechanism among these factors.

• 자원ㆍ환경경제연구
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• 제16권3호
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• pp.629-641
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• 2007

Chinese government has implemented the West Development Strategy since 1999 to boost the region's growth and prevent the environmental degradation. Until now, the regional economy and living standard in Western China have been greatly improved, while it also indicated by the State Council that the ecological environment still deteriorated with part improvement, and pressure of water shortage increased. The paper focus on the relationship of GDP per capita and the volume of industrial waste water discharge of all the 12 provinces in Western China from 1989 to 2004, by the expanded EKC model in the cubic form. Results show that they mainly have down trend in the whole sample space but small up trend in the recent years. That means controlling of industrial wastewater discharge is still an important task to be insisted in the Western China.

• Asian Pacific Journal of Cancer Prevention
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• 제16권9호
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• pp.3735-3740
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• 2015

Context: Insulin-like growth factor peptides play important roles in regulating cell growth, cell differentiation, and apoptosis, and have been demonstrated to promote the development of colorectal cancer (CRC). Objective: To examine the association of insulin-related biomarkers including insulin-like growth factor-1 (IGF-1), insulin-like growth factor binding protein-3 (IGFBP-3) and C-peptide with CRC risk and assess their relevance in predictive models. Materials and Methods: The odds ratios of colorectal cancer for serum levels of IGF-1, IGFBP-3 and C-peptide were estimated using unconditional logistic regression models in 100 colorectal cancer cases and 100 control subjects. Areas under the receiving curve (AUC) and integrated discrimination improvement (IDI) statistics were used to assess the discriminatory potential of the models. Results: Serum levels of IGF-1 and IGFBP-3 were negatively associated with colorectal cancer risk (OR=0.07, 95%CI: 0.03-0.16, P for trend <.01, OR=0.06, 95%CI: 0.03-0.15, P for trend <.01 respectively) and serum C-peptide was positively associated with risk of colorectal cancer (OR=4.38, 95%CI: 2.13-9.06, P for trend <.01). Compared to the risk model, prediction for the risk of colorectal cancer had substantially improved when all selected biomarkers IGF-1, IGFBP-3 and inverse value of C-peptide were simultaneously included inthe reference model [P for AUC improvement was 0.02 and the combined IDI reached 0.166% (95 % CI; 0.114-0.219)]. Conclusions: The results provide evidence for an association of insulin-related biomarkers with colorectal cancer risk and point to consideration as candidate predictor markers.

• 기술혁신연구
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• 제31권1호
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• pp.105-148
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• 2023

본 논문은 Schumpeter의 기술변화 3단계 개념에 기초해서 기술진보가 실질경제성장에 기여하는 정도를 측정하는 새로운 방법을 제시한다. 통계청 광업제조업조사 마이크로데이터를 이용해서 2003-2018년 기간 동안 기술진보의 실질 성장기여 정도를 총요소 생산성 성장률(성장회계방법), R&D투자 기여율, 슘페테리안 혁신성장률로 각각 측정하고 비교한 결과는 다음과 같다. 첫째, 성장회계의 총요소생산성 성장률과 슘페테리안 혁신 성장률에 의한 기술진보의 실질 성장기여에 대한 측정에서 상반된 결과를 나타낸다. 둘째, 생산성장률이 감소추세에 있으면 증가추세에 있을 때와 비교해서 생산성장률과 총요소생산성성장률 차이가 커지고, 반대로 증가추세에 있으면 감소추세에 있을 때와 비교에서 생산성장률과 총요소생산성성장률의 차이가 작아진다. 셋째, 혁신성장률에 영향을 미치는 기술기회, 즉, 어느 한 분야의 연구개발과 그 인접분야까지의 연구개발 유인이 혁신성장에 미치는 기여도는 3.3%에 불과하다. 이 결과가 기존의 기술진보의 성장기여에 대한 인식과 다른 이유는 기술진보라는 동일한 용어를 측정하면서 서로 다른 실체를 측정하고 있는 것에 기인한다. 따라서 총요소생산성 성장률은 거시적 경제효율성, R&D투자는 신기술공급의 효과성, 슘페테리안 혁신성장률은 기술진보의 경제적 영향을 측정하는 데 사용해야 한다. 본 논문 연구 결과의 정책적 함의는 다음과 같다: ① 기술공급일변도의 정책에서 기술공급과 신기술수요지원의 융합정책으로 전환, ② 임무지향형 R&D 정책과 국가 R&D와 민간 R&D가 연계되는 R&D 정책, ③ 신지식체화 정도를 반영한 자본재의 재분류.