• Journal of the korean Society of Automotive Engineers
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• v.8 no.1
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• pp.87-91
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• 1986

최근들어 우리나라의 급속한 고도성장과 더불어 수송물동량과 교통인구의 증가로 인해 자동차로 부터 배출되는 배기가스의 공해가 커다란 사회적인 문제로 부각됨에 따라 날로 심각해져 가는 대 기오염을 방지하기 위하여 한국의 차량비율중 50%이상을 차지하고 있는 디젤엔진으로부터의 배 기사스 저감이 절실히 요구되고 있는 실정에 있다. 한편 우리나라 자동차산업 및 엔진산업은 최근 몇 년동안 양적인 면에서 괄목할만한 성장을 해왔으나, 아직까지 선진제조기술의 모방단 계를 벗어나지 못했기 때문에 질적인 면에서는 선진국과 경쟁할만한 자체기술 개발능력이 부족한 상태이다. 따라서 지난 10여년동안 세계 유명엔진 제조업체와 기술제휴를 통한 기술축적, 끊임 없는 연구개발, 생산기술 향상 등을 통하여 국내 디젤엔진 업계를 선도하고 있는 대우중고업은 지난 30년동안 350여개 이상의 엔진을 설계, 개발한 경험을 갖고 있는 세계적인 내연기관 연구 소인 Austria의 AVL사와 공동으로 기존시장에서 호평을 받고 있는 M.A.N.엔진을 기본 Model로 하여 저공해고효율 및 고BMEP특성을 갖춘 D1146 Series, D2366 Series를 개발함으로써 국내 자동차 공업의 기술수준 향상과 국제경쟁력 확보를 통하여 수출산업으로 육성하고자 하였다.

• Proceedings of the Korea Multimedia Society Conference
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• 2003.05b
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• pp.401-404
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• 2003

현재 특수교육이나 작업치료에서 사용되고있는 시지각 발달검사 도구들은 종이에 인쇄된 형식으로 지필식 방법을 사용한다 검사과정에 치료사나 심리상담사들의 개별적인 설명 및 지도가 필요하며, 시지각의 반응시간과 공간 지각능력 등의 정확한 측정이 어렵고, 검사결과에 대한 분석 또한 수작업으로 이루어지고 있어 한계성의 문제가 제기된다. 본 논문은 웹 기반 시지각 진단 프로그램의 개발을 위해 먼저, 시지각 진단프로그램 모형 구성을 위한 제 요소 및 신뢰도의 타당성을 입증하기 위한 변인들을 추출하고자 한다. 이를 통해 시지각 진단 분석결과의 컴퓨터 처리 및 데이터 축적을 통한 업무 자동화의 효과와 시지각 진단 평가의 한국형 표준화 작업을 기대할 수 있다.

• Korean small business review
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• v.32 no.1
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• pp.65-87
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• 2010

With the advent of knowledge-based society, the revitalization of technological innovation type SMEs, termed "inno-biz" hereafter, has been globally recognized as a government policymakers' primary concern in strengthening national competitiveness, and much effort is being put into establishing polices of boosting the start-ups and innovation capability of SMEs. Especially, in that the inno-biz enables national economy to get vitalized by widening world markets with its superior technology, and thus, taking the initiative of extremely competitive world markets, its growth and development has greater significance. In the case of Korea, the government has been maintaining the policies since the late 1990s of stimulating the growth of SMEs as well as building various infrastructures to foster the start-ups of the SMEs such as venture businesses with high technology. In addition, since the enactment of "Innovation Promotion Law for SMEs" in 2001, the government has been accelerating the policies of prioritizing the growth and development of inno-biz. So, for the sound growth and development of Korean inno-biz, this paper intends to offer effective management strategies for SMEs and suggest proper policies for the government, by researching into the effect of technological innovation capability and technology commercialization capability as the primary business resources on business performance in Korean SMEs in the light of market information orientation. The research is carried out on Korean companies characterized as inno-biz. On the basis of OSLO manual and prior studies, the research categorizes their status. R&D capability, technology accumulation capability and technological innovation system are categorized into technological innovation capability; product development capability, manufacturing capability and marketing capability into technology commercialization capability; and increase in product competitiveness and merits for new technology and/or product development into business performance. Then the effect of each component on business performance is substantially analyzed. In addition, the mediation effect of technological innovation and technology commercialization capability on business performance is observed by the use of the market information orientation as a parameter. The following hypotheses are proposed. H1 : Technology innovation capability will positively influence business performance. H1-1 : R&D capability will positively influence product competitiveness. H1-2 : R&D capability will positively influence merits for new technology and/or product development into business performance. H1-3 : Technology accumulation capability will positively influence product competitiveness. H1-4 : Technology accumulation capability will positively influence merits for new technology and/or product development into business performance. H1-5 : Technological innovation system will positively influence product competitiveness. H1-6 : Technological innovation system will positively influence merits for new technology and/or product development into business performance. H2 : Technology commercializing capability will positively influence business performance. H2-1 : Product development capability will positively influence product competitiveness. H2-2 : Product development capability will positively influence merits for new technology and/or product development into business performance. H2-3 : Manufacturing capability will positively influence product competitiveness. H2-4 : Manufacturing capability will positively influence merits for new technology and/or product development into business performance. H2-5 : Marketing capability will positively influence product competitiveness. H2-6 : Marketing capability will positively influence merits for new technology and/or product development into business performance. H3 : Technology innovation capability will positively influence market information orientation. H3-1 : R&D capability will positively influence information generation. H3-2 : R&D capability will positively influence information diffusion. H3-3 : R&D capability will positively influence information response. H3-4 : Technology accumulation capability will positively influence information generation. H3-5 : Technology accumulation capability will positively influence information diffusion. H3-6 : Technology accumulation capability will positively influence information response. H3-7 : Technological innovation system will positively influence information generation. H3-8 : Technological innovation system will positively influence information diffusion. H3-9 : Technological innovation system will positively influence information response. H4 : Technology commercialization capability will positively influence market information orientation. H4-1 : Product development capability will positively influence information generation. H4-2 : Product development capability will positively influence information diffusion. H4-3 : Product development capability will positively influence information response. H4-4 : Manufacturing capability will positively influence information generation. H4-5 : Manufacturing capability will positively influence information diffusion. H4-6 : Manufacturing capability will positively influence information response. H4-7 : Marketing capability will positively influence information generation. H4-8 : Marketing capability will positively influence information diffusion. H4-9 : Marketing capability will positively influence information response. H5 : Market information orientation will positively influence business performance. H5-1 : Information generation will positively influence product competitiveness. H5-2 : Information generation will positively influence merits for new technology and/or product development into business performance. H5-3 : Information diffusion will positively influence product competitiveness. H5-4 : Information diffusion will positively influence merits for new technology and/or product development into business performance. H5-5 : Information response will positively influence product competitiveness. H5-6 : Information response will positively influence merits for new technology and/or product development into business performance. H6 : Market information orientation will mediate the relationship between technology innovation capability and business performance. H7 : Market information orientation will mediate the relationship between technology commercializing capability and business performance. The followings are the research results : First, as for the effect of technological innovation on business performance, the technology accumulation capability and technological innovating system have a positive effect on increase in product competitiveness and merits for new technology and/or product development, while R&D capability has little effect on business performance. Second, as for the effect of technology commercialization capability on business performance, the effect of manufacturing capability is relatively greater than that of merits for new technology and/or product development. Third, the mediation effect of market information orientation is identified to exist partially in information generation, information diffusion and information response. Judging from these results, the following analysis can be made : On Increase in product competitiveness, directly related to successful technology commercialization of technology, management capability including technological innovation system, manufacturing capability and marketing capability has a relatively strong effect. On merits for new technology and/or product development, on the other hand, capability in technological aspect including R&D capability, technology accumulation capability and product development capability has relatively strong effect. Besides, in the cast of market information orientation, the level of information diffusion within an organization plays and important role in new technology and/or product development. Also, for commercial success like increase in product competitiveness, the level of information response is primarily required. Accordingly, the following policies are suggested : First, as the effect of technological innovation capability and technology commercialization capability on business performance differs among SMEs; in order for SMEs to secure competitiveness, the government has to establish microscopic policies for SMEs which meet their needs and characteristics. Especially, the SMEs lacking in capital and labor are required to map out management strategies of focusing their resources primarily on their strengths. And the government needs to set up policies for SMEs, not from its macro-scaled standpoint, but from the selective and concentrative one that meets the needs and characteristics of respective SMEs. Second, systematic infrastructures are urgently required which lead technological success to commercial success. Namely, as technological merits at respective SME levels do not always guarantee commercial success, the government should make and effort to build systematic infrastructures including encouragement of M&A or technology trade, systematic support for protecting intellectual property, furtherance of business incubating and industrial clusters for strengthening academic-industrial network, and revitalization of technology financing, in order to make successful commercialization from technological success. Finally, the effort to innovate technology, R&D, for example, is essential to future national competitiveness, but its result is often prolonged. So the government needs continuous concern and funding for basic science, in order to maximize technological innovation capability. Indeed the government needs to examine continuously whether technological innovation capability or technological success leads satisfactorily to commercial success in market economic system. It is because, when the transition fails, it should be left to the government.

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2004.06a
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• pp.399-406
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• 2004

본 연구에서는 국내 원전이 위치한 지역의 토양에서 $Cs^{137}$의 축적 경향을 파악하기 위하여 원전이 위치한 영광군 관내의 평지와 고산지대인 금정산, 불갑산 및 영광원전으로부터 원거리에 위치한 내장산 등을 대상으로 토양 중 $Cs^{137}$의 화학적인 특성과 고도에 따른 $Cs^{137}$의 축적 경향을 평가하기 위하여 실험을 통한 연구를 수행하였다. 일반적으로 국내 토양 중 $Cs^{137}$의 농도는 불검출 - 2523q/kg-dry의 범위 내에 포함되었으며 본 연구에서 수행한 평지부분과 고산지대인 원전으로부터 2km 떨어진 금정산, 약 20km 떨어진 불갑산 및 원거리에 위치한 내장산에서도 지금까지의 $Cs^{137}$ 농도 범위에 들었다. 그러나 고산지대는 평지에서와는 다르게 고도가 증가함에 따라 $Cs^{137}$ 농도도 증가하는 경향을 보이고 있고, 정상 부분보다 $Cs^{137}$의 농도가 하부 부분보다 더 높게 나타났고 영광원전 인근 일반평지부분보다는 $Cs^{137}$의 방사능 농도가 2~6배 정도의 높은 경향을 나타내었다. 연구결과 $Cs^{137}$의 분포는 지형적 요인(고도, 강수량 등)과 토양의 화학적 요인(양이온치환용량)과 상관성이 근 것으로 나타났다. 지형적 요인으로는 주로 고도를 들수가 있는데 높은 고도의 산의 경우 대기중 $Cs^{137}$이 토양에 침투되는 기회가 커짐으로 동일한 토질 조건의 평지 토양에 비해 높은 $Cs^{137}$ 준위를 나타내었다. 토양의 화학적 요인으로는 양이온치환용량이 주요 인자임이 규명되었다. 양이온치환용량은 침적된 $Cs^{137}$을 토양에 고정시키는 능력을 나타내며 같은 지형조건에서 높은 양이온치환용량을 가진 시료가 낮은 양이온치환용량을 가진 토양에 비해 $Cs^{137}$ 농도가 높은 값을 보였다.

• Journal of The Korean Association of Information Education
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• v.9 no.1
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• pp.113-124
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• 2005

In this study, we designed and developed a tool to help teachers select and develop effective performance assessment criteria considering characteristics of individual learners. Using this tool, we can analyze preferences of teachers and characteristics of students for each rubric by exploring the classification and association rules through data mining. Those findings can give us guidelines and insights for the development and the selection of performance assessment criteria. The classification rules found are used for the learner-centered evaluation reflecting learners' interests, capabilities, and circumstances. Association rules found are utilized for analyzing teachers' preference, which enable to reduce time and efforts for the development and selection of rubric. Also, this tool supports creation, change, and selection of teachers' rubric linked with the performance assessment of NEIS(National Education Information System).

• Proceedings of the Korea Water Resources Association Conference
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• 2005.05b
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• pp.1496-1501
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• 2005

최근까지 물 부족을 해소하기 위한 방법으로 용수공급 확대만이 유일한 방법인 양 인식하여 왔다. 그러나 최근에 이르러 우리나라는 가용 수자원의 부족, 댐 개발 적지의 고갈, 지역주민의 집단반발 등으로 용수원의 적기확보가 난관에 봉착하고 있다. 갈수록 어려워지는 용수원 확보로, 급증하는 용수수요를 어떻게 충족시킬 것인가에 대한 진지한 논의가 필요한 시점인 것이다. 수자원의 확보가 심각한 사회문제로 대두되고 있고 물 부족 사태가 언제 올지 모르는 시점에서 앞으로의 용수수요에 대한 추정이 맞지 않고 용수량을 과다측정 또는 과소 측정하는 가장 큰 이유 중의 하나가 과거로부터 축적된 데이터의 부족이라 할 수 있다. 그럼에도 불구하고 기존까지의 용수수요예측에 관한 연구는 부분적인 연구결과만 있을 뿐 전반적인 이론 및 기법에 관한 정립이 되어 있지 않은 실정이다. 용수수급의 효율화는 수요측면과 공급측면을 조화롭게 운용함으로서 가능해지는 것으로 용수수요를 정확하고 신속하게 예측하는 것은 용수공급능력의 확대와 동일한 효과를 나타낸다. 그러나 인구, 생활양식, 문화수준, 산업구조, 용수요금, 소득, 기후조건 등 각종 요인을 종합적으로 분석하여 장래의 용수수요예측을 한다는 것은 현 기술 상태에서 매우 어려운 일이다. 따라서 본 연구에서는 금강유역을 시범유역을 선정하여 금강유역내의 용수수급현황을 직접 현장조사를 통해 파악하고, 현재 용수수급현황 파악에 있어서의 문제점과 향후 체계적이고 정확한 용수수급현황 파악을 위한 방법을 제시하고자 한다. 이를 위해 주요 생활용수, 공업용수 취수장을 직접 방문하여 용수사용실태를 조사함은 물론 금강홍수통제소에서 운영하고 있는 하천유수사용실적 관리시스템의 필요성과 문제점을 동시에 분석해보았다. 더 나아가 지속적인 용수사용실태를 조사하여 표준권역별로 물이용 지표화를 제시함으로써 향후 용수사용실태 분석시 효율성을 극대화 시키는 방안을 제시한다면 용수수요추정 오류에 따른 부작용을 최소화할 수 있을 것으로 판단된다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.8
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• pp.64-70
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• 2018

The development of weapon systems (or components) is hindered by the number of tests due to the limited development period and cost, which reduces the scale of accumulated data related to failures. Nevertheless, because a large amount of failure data and maintenance details during the operational period are managed by computerized data, the cause of failure of weapon systems (or components) can be analyzed using the data. On the other hand, analyzing the failure and maintenance details of various weapon systems is difficult because of the variation among groups and companies, and details of the cause of failure are described as unstructured text data. Fortunately, the recent developments of big data processing technology, machine learning algorithm, and improved HW computation ability have supported major research into various methods for processing the above unstructured data. In this paper, unstructured data related to the failure / maintenance of defense weapon systems (or components) is presented by applying doc2vec, a machine learning technique, to analyze the failure cases.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.6
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• pp.3832-3840
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• 2014

The rapidly aging population is also increasing the number of dementia patients rapidly. Studies have revealed the early signs of slowing progress. Therefore, dementia patient safety, continuous care, daily living, and health care are becoming more important. In this paper, a smart home care system using smart phones and Bluetooth communication technology was used to monitor the state of dementia patients of based on the results of grading dementia, health care of the dementia patients at home and provide for the safety of the system using motion sensors and gas leak sensors to respond to various emergency situations, such as fire, gas leak protection, and loitering. Using this system, the patient can stay longer in their home due to the nature of Korean culture before admission, while reducing the family's economical, physical and psychological burden and allowing the consultation of specialists through the system by building a database of individuals and providing professional service and specialty care referral agencies through the link.

• Journal of the Korean School Mathematics Society
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• v.8 no.4
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• pp.481-494
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• 2005

In this study, the goal is to spread profound knowledge and theory through providing with accumulated methods in mathematics education to the students who are relatively neglected in educational benefits. The process is divided into 3 categories: mathematics for obtaining common sense and intelligence, practical math for application, and math as a liberal art to elevate their characters. Furthermore, it includes the reasons for studying math, improving problem-solving skills, machinery application learning, introduction to code(cipher) theory and game theory, utilizing GSP to geometry learning, and mathematical relations to sports and art. Based on these materials, the next step(goal) is to train graduate students to conduct researches in teaching according to the teaching plan, as well as developing interesting and effective teaching plan for the remote high school learners.

• Proceedings of the Korean Vacuum Society Conference
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• 2010.08a
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• pp.119-119
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• 2010

다층박막구조를 갖는 유기발광소자는 저분자 증착 기술이 발전함에 따라 다양한 구조로 제작이 가능해 다양한 구조 설계를 통하여 발광특성을 향상할 수 있게 되었다. 다층박막구조에서 유기발광소자의 발광효율을 향상시키기 위하여 다양한 주입층과 수송층을 사용하여 전하의 주입 장벽과 이동도를 제어할 수 있다. 저분자 유기발광소자에서 가장 많이 이용되는 tris(8-hydroxyquinoline) aluminum (Alq3) 또는 7-diphenyl-1, 10-phenanthroline (BPhen)을 단일구조로 전자수 송층으로 사용한 유기발광소자의 발광 메커니즘에 대한 연구가 많이 진행되었지만, Alq3 와 BPhen 을 같이 사용하였을 때 나타나는 전기적 특성과 광학적 특성에 대한 연구는 미미하다. 따라서 본 연구에서는 전자 수송층으로 Alq3 와 BPhen 을 다중 이종구조를 사용하여 녹색 유기발광소자를 제작하고 이의 전기적 특성과 광학적 특성을 연구하였다. 유기발광소자를 제작한 후 Alq3와 BPhen 다중 이종구조의 위치와 이종구조 개수의 변화에 따라 발광 특성 비교를 위하여 인가된 전압에 대한 전류밀도와 휘도, 발광 효율 및 전력 효율을 측정하였다. 다중 이종구조로 제작할 경우 단일 BPhen층의 두께가 얇아지기 때문에 단일 이종구조의 소자보다 BPhen층의 정공차단 능력이 저하되어 저전압에서는 Alq3/BPhen 계면에서의 누설되는 정공의 수가 증가하였다. 또한 이종구조의 수가 증가할수록 단일 이종구조일 때에 비하여 인가된 전압에 대한 전류밀도가 감소하였다. 이는 Alq3와 BPhen 내에서 각각 전자의 이동도가 다르기 때문에 Alq3/BPhen 이종계면에서 전자가 축적되어 공간전하를 형성하므로 내부전계가 형성되어 구동전압이 증가하는 것으로 보인다. 그러나 다중 이종구조로 된 전자 수송층을 포함한 유기발광소자의 발광 효율은 구동전압의 변화에 따라 변하지 않는다. 이종계면의 수가 증가함에 따라 각각의 이종계면에서 축적되는 전자의 양이 감소하기 때문에 고전압에서 발광효율의 저하가 감소하였다. 그러므로 다중 이종구조를 가진 전자수송층 내에서 전자의 주입과 수송에 대한 원리는 안정화된 발광효율을 가지는 유기발광소자를 제작하는데 중요하다.