• 한국산업융합학회 논문집
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• 제5권1호
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• pp.53-64
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• 2002

The purpose of this study was to predict the future urban activities effectively and rationally. For the purpose, a simulation model, based on SD, was built by integrating economic activities, land use and traffic of a city and by dividing Daegu Metropolitan City into seven districts and one county. To identify the effect of the development of a new city in the Dalsung County area, the future population and traffic volume of the city were predicted, using the model. The results are summarized as follows. The future population according to the development of a new city in the Dalsung County area was predicted, and the effects before and after the development twenty years later were compared. The future population of the Dalsung County was found to have slightly increased, whereas that of the adjoining Dalsuh Metropolitan District was found to has slightly decreased. For the other districts, there were no changes of the future population. It was found, therefore, that the development of a new city would have no effect on other districts. Then, the traffic volume according to the development of a new city in the Dalsung County area was also predicted. It was found that in the initial stage the traffic volume would increase with the increase in population of Dalsung County. It was predicted that particularly,. the traffic volume for the purpose of business would greatly increase. The traffic volume of Dalsuh Metropolitan District showed a slight decrease, whereas for the other districts, there were no changes of the traffic volume.

• 한국응용곤충학회지
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• 제47권1호
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• pp.59-64
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• 2008

유기재배 농가에서 해충방제용으로 이용하거나 해충에 살충력이 보고된 식물추출물 20종을 점박이응애, 복숭아혹진딧물 및 배추좀나방에 대해 살비, 살충 효과를 검정하였다. 이들 중 13종의 식물추출물은 1% 농도에서 점박이응애에 대해 80%이상의 높은 살비력을 보였다. 그러나, 0.2% 농도에서는 모두 50% 미만의 살충율을 보였고, 0.5% 농도에서는 창포, 목향 및 고추씨 추출물이 각각 82.8%, 82.8%, 86.2%의 높은 살비력을 나타내었다. 복숭아혹진딧물에 대해서는 고추씨와 겨자 추출물이 0.5% 농도에서 48.6%와 42.9%로 가장 높은 살충력을 보였다. 배추좀나방의 경우 1% 농도에서 황련과 고추씨 추출물이 50%와 55%의 살충력을 보였고 나머지 추출물의 살충효과는 50% 미만으로 낮았다. 하지만 여러 식물추출물이 배추좀나방 유충의 섭식을 저해하는 효과를 보였으며 황련 추출물을 처리한 경우 유충의 섭식저해율이 79.4%로 가장 높았다. 본 실험을 통해 천연살충제로서 고추씨와 같이 사용이 용이한 식물체추출물이 유기농업에 이용 가능성이 있음을 확인할 수 있었다.

• Educational Technology International
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• 제10권1호
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• pp.79-105
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• 2009

The notion of contradiction from Cultural-Historical Activity Theory (CHAT) perspectives is known as an "engine" for the development of human practices because participants attempt to adjust their practices to resolve contractions. This study examines two middle school teachers' classroom practices from CHAT, focusing on the role of contradictions that emerged between their existing teaching practices and constructivist activities in the development of a student-centered technology-integrated learning environment. Findings indicated that teachers' awareness and resolution of contradictions played a large role in the development of a technology-supported student-centered learning environment, a culturally more advanced activity system: students displayed greater responsibilities for their learning and were guided to make effective decisions for their learning activity.

• Nuclear Engineering and Technology
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• 제41권4호
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• pp.549-560
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• 2009

Over the last three decades, nuclear technology development has played a vital role in the socio-economic development of the Republic of Korea. This study, being the first of its kind, focuses on quantifying the actual economic contribution of nuclear technologies to economic development by evaluating the net benefit of the nuclear power with respect to the country's Gross Domestic Product (GDP). An input-output analysis was employed as a methodological approach to analyze inter-industrial economic activities by calculating the industrial value added as a means of the economic contribution during the period of 1980 to 2005. The industrial value added of nuclear technologies was estimated from the construction and operation of nuclear power (backward-linked industrial value added) and from the industrial activities attributed to the electricity generated by the nuclear power (forward-linked industrial value added). It was found that the total net contribution of nuclear technologies as a percentage share of GDP amounted to 2.38% in 2005.

• 기술혁신학회지
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• 제14권spc호
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• pp.1073-1095
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• 2011

최근 혁신주도형 경제가 강조되면서 기업이 생존하고 지속적으로 성장하기 위해서는 기술혁신을 지원하는 기술 인텔리전스 활동이 날로 중요해 지고 있다. 따라서, 혁신주체들의 기술기회 발굴 활동을 지원하고 이들의 혁신 가능성을 높이기 위해서는 기술 인텔리전스 관련 활동의 현황에 대해 보다 세부적이고 실질적인 이해가 필요하며 동시에 이들을 지원해 줄 수 있는 방법론의 구축이 요구된다. 이에 본 연구는 기술기회 발굴활동에 대한 문헌연구를 통하여 기술기회 발굴의 목적, 활용정보, 방법론을 조사하고 이를 유형화 하고자 하였다. 더불어 기술 인텔리전스 관련 활동의 국내 현황을 분석하기 위하여 국내 기업들을 대상으로 인터뷰를 수행하였다. 마지막으로, 문헌연구와 인터뷰를 종합하여 기술기회의 유형별 포트폴리오와 기술기회 발굴활동의 통합체계를 제시하였다. 본 연구는 기술기회 발굴활동에 대한 전략적, 정책적 시사점을 제시하며 아울러 향후 기술기회 발굴활동 지원 시스템에 필요한 기술기회 발굴활동의 이론적 토대를 구축할 수 있을 것이다.

• International Journal of Quality Innovation
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• 제7권2호
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• pp.157-172
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• 2006

Due to the advancement of technology and rapidly changing environment of the market, the life cycle of high-tech products is becoming shorter. The enterprise must constantly innovate and select correct development strategy of new product in order to respond to customers' demands for upgrading operational performance of industry. Development of new product is the critical activity for enterprise's survival and growth. This research focuses on the effects of Taiwan high-tech companies' introduction of innovative activity and development strategy of new product on development performance of new product for analysis and exploration. The result findings reveal that: (1) High execution degree of innovative activity has positive effect on the implementation of development strategy of new product; (2) The companies with better implementation of development strategy of new product reveal better development performance; (3) The companies with higher degree of execution of innovative activity and better execution of development strategy of new product reveal better development performance of new product.

• Preventive Nutrition and Food Science
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• 제13권3호
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• pp.237-240
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• 2008

The antioxidant activities of aroma extracts from commercially available red wines in Korea were evaluated. The aroma extracts of the red wines were extracted by simultaneous steam distillation. Antioxidant activity was measured by DPPH (1,1-diphenyl-2-picrylhydrazyl) radical scavenging activity and ABTS (2,2-azino-bis-3-ethylbenzothiazoline-6-sulphonic acid) radical cation scavenging activity. DPPH radical scavenging activity of the aroma extracts in the red wines increased with increases in the amount of wine used for aroma extraction. Antioxidant activities of domestic wine 1, imported wine 7, and imported wine 12 were 97.16, 96.72 and 94.52%/20 mL wine by DPPH assay and 7.09, 8.07 and 7.28 mg ascorbic acid equivalents per mL wine by ABTS assay, respectively. This study demonstrates potent antioxidant activities of the aroma extracts of commercially available red wines in Korea.

• 한국식품과학회지
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• 제39권3호
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• pp.255-259
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• 2007

본 연구에서는 이천 게걸무, 강화 순무 및 조선무의 품질 특성을 비교 분석하였다. 일반성분의 경우, 수분 함량은 이천 게걸무 87.78%, 강화 순무 92.73% 및 조선무 91.45%로 게걸무가 다른 무에 비하여 낮았다. 반면에 조단백, 조섬유 및 조회분 함량은 이천 게걸무가 강화 순무와 조선무에 비하여 약 1.7-1.8배, 1.2-1.6배 및 2.0-2.4배 높았다. 식이섬유함량은 이천 게걸무 11.32%, 강화 순무 13.26% 및 조선무 14.20%로 게걸무가 다른 무에 비하여 낮았다. 무기질 함량의 경우, 게걸무의 Mg, K, Ca 함량이 다른 무에 비하여 높았으며 P, Zn, Fe 함량은 다른 무와 유의적인 차이가 없었다. 가수분해 효소로서 소화와 관련된 ${\alpha}-amylase$활성의 측정 결과 이천 게걸무 9.97 unit, 강화 순무 14.87 unit 및 조선무 18.99 unit으로 나타났다. Protease 활성의 경우, 알칼리성은 이천 게걸무와 조선무가 각각 3.02 PU, 3.10 PU의 유사한 수준으로 순무에 비하여 높았고, 산성 protease 활성에서는 게걸무가 가장 높았다. 무의 매운맛 성분 및 기능성 관련 물질로 알려진 myrosinase 활성은 이천 게걸무가 36,990.81 unit으로 강화 순무나 조선무보다 높았다. 결론적으로 이천 게걸무는 강화 순무나 조선무에 비하여 조단백, 회분, 조섬유 및 무기질 중 Na, Mg, K, Ca의 함량이 높고 protease 활성과 myrosinase 활성이 높았다.

• 융합정보논문지
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• 제11권8호
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• pp.73-83
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• 2021

과거에 비해 기술의 급속한 발전으로 인해 기업들은 혁신을 하지 않으면 치열한 경쟁환경하에서 살아남기가 어려워지고 있다. 기업이 혁신활동을 전개하기 위해서는 새로운 지식을 찾고 이를 소화하고 자신만의 기술역량을 확보하는 것이 매우 중요하다. 이에 본 연구에서는 탐험활동과 활용활동, 기술혁신역량, 혁신성과(기술성과, 제품성과), 흡수역량, 혁신강도간의 인과관계를 파악하였다. 분석결과, 탐험 및 활용 활동은 기술혁신역량에 영향을 미치는 것으로 나타났으며, 기술혁신역량, 흡수역량, 혁신강도는 혁신성과에 영향을 미치는 것으로 나타났다. 또한 흡수역량과 혁신강도는 기술혁신역량과 혁신성과간에 매개역할을 수행하는 것으로 나타났다. 본 연구의 결과는 기업에서 혁신활동을 기획하거나 수행시에 유용한 가이드라인으로 활용이 가능할 것으로 보인다.

• 인터넷정보학회논문지
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• 제21권3호
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• pp.61-70
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• 2020

The 4th Industrial Revolution is a revolutionary change through intelligence, big fusion and personalization, and the importance of sensor technology that is the basis of core technology is emerging. This study empirically analyzes the derivation of national strategy for R&D of sensor technology, and draws out the effect of technology internalization effort through strategic R&D activities on technical performance and further on national economy. The research and development results are calculated for each type of technology internalization, and the results of the research and development are verified to establish a structure that contributes to the national economic performance. As a national technology internalization strategy, considering its own R&D investment and joint research and development, we examine the impact of each factor on patents and GDP, focusing on causality and ripple effects. For causality analysis, Grandeur causality analysis shows that R&D investment and joint research and development in all countries have mutual causal relationship with GDP. The implications are as follows. First, it is necessary to establish the policy of national economic development through the internalization of technology and knowledge. Second, it is necessary to establish policies according to the type of knowledge internalization. Third, it will be necessary to create an ecosystem environment based on a virtuous relationship between knowledge internalization and national technology and economic development.