• Asian Journal of Innovation and Policy
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• 제2권1호
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• pp.37-62
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• 2013

Many scholars have persevered in understanding the convergence process by developing a measurement that reflects the characteristics of the convergence phenomenon as a process. Recently a series of studies suggested a framework in terms of diversity and coherence. However, an index for coherence is required to reflect the vital features of the conceptual definition, and thus a new index for coherence is proposed in this paper. Technology Convergence Index combines diversity and coherence and indicates the degree of the convergence in information computer technology (ICT), biotechnology (BT) and nanotechnology (NT) sectors. The index can not only be used to track each technology field that consists of a major technology sector, but also to compare other leading countries. Based on a comparison study between the United States and South Korea, the degrees of technology convergence of Korea in ICT, BT, and NT sectors have ameliorated.

• 디지털융복합연구
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• 제12권12호
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• pp.227-232
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• 2014

전 세계적으로 기술의 융합은 과학기술 분야에서 메가트렌드를 형성하고 있으며 선진국에서는 자국이 보유한 강점 기술을 기반으로 하는 새로운 융합기술의 도출에 주력하고 있다. 융복합과제의 융합지수를 도출함에 있어서 임의로 융합지수를 올리기 위한 조작이 가능하고, 사업계획서의 내용과 다소 차이가 있는 항목들이 추가되어 융합지수가 산출되는 등의 문제점이 예상되지만 평가 시에 이를 검증하기가 쉽지 않다. 따라서 본 논문에서는 융복합과제에 대한 융합지수 도출 시 연계되는 항목을 정하여 일관성을 유지할 수 있도록 하고, 평가 시 에도 이를 쉽게 확인할 수 있도록 하는 방안에 대해 제시하였다.

• 한국산업융합학회 논문집
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• 제25권2_2호
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• pp.219-232
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• 2022

The aim of this study is to provide the dynamic convergence index that reflected the inherent characteristics of the convergence phenomenon and utilized the nationally-funded R&D projects data, thereby suggesting useful information about the direction of the national convergence R&D strategy. The dynamic convergence index that we suggested was made of two indicators: persistency and diversity. From a time-series perspective, the persistency index, which measures the degree of continuous convergence of multidisciplinary nationally-funded R&D projects, and the diversity index, which measures the degree of binding with heterogeneous research areas. We conducted the empirical experiment with 151,248 convergence R&D projects during the 2015~2021 time period. The results showed that convergence R&D projects in both public health and life sciences appeared the highest degree of persistency. It was presumed that the degree of persistency has increased again due to the COVID-19 pandemic. Meanwhile, the degree of diversity has risen with combining with disciplinary such as materials, chemical engineering, and brain science areas to solve social problems including mental health, depression, and aging. This study not only provides implications for improving the concept and definition of dynamic convergence in terms of persistency and diversity for national convergence R&D strategy but also presented dynamic convergence index and analysis methods that can be practically applied for directing public R&D programs.

• 한국산학기술학회논문지
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• 제19권1호
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• pp.34-47
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• 2018

융합기술 개발에 대한 선진국들의 관심이 고조되는 가운데 우리나라의 융합기술 분야의 경쟁력 강화를 위한 전략적 기술개발의 접근으로, 기술 및 산업분야에 미치는 후생적 파급효과가 큰 핵심융합기술을 발굴할 수 있는 방법론이 요구된다. 본 연구에서는 특허의 기술융합수준을 후생적으로 타기술분야들을 연계하는 파급효과 수준으로 정의하고, 스마트공장의 ICT 융합기술 분야 1,124개 미국출원특허를 이용한 특허 인용 네트워크 분석을 통하여, IPC 기술분야 네트워크로부터 산출한 IPC 기술분야 매개중심성 지수를 이용하여 해당 특허의 기술융합수준을 측정하는 이종분야 기술융합지수를 소개하였다. 본 연구에서 제안한 이종분야 기술융합지수와 중재자역할 지표와의 상관관계를 분석한 결과, 다른 지수들 (타분야비율지수 및 동종분야 기술융합지수) 대비 이종분야 기술융합지수가 후생적으로 다른 기술분야들을 연계하는 파급효과 차원의 융합특성을 측정하는 지수임이 확인되었다. 제안한 이종분야 기술융합지수를 이용하여 정부부처에서 제시한 스마트공장의 주요 ICT기술 전략분야들 중 핵심 ICT 융합기술분야들을 분석한 결과, '제조실행분석 애플리케이션'을 포함한 6개의 핵심 ICT융합 기술분야들을 도출하였다. 추가로 '제조실행분석 애플리케이션'에 속한 특허들의 IPC들을 대상으로 블록모델링 분석한 결과, '전자통신기술'과 '전자 디지털데이터 처리기술'로 대표되는 블록들(블록 3&4)이 핵심기술과 융합 가능한 관련 기술분야임을 확인하였다. 본 연구의 결과에 근거하여 스마트공장의 융합기술 개발방안에 대한 정책적 시사점을 제공하였다.

• 기술혁신학회지
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• 제22권3호
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• pp.446-474
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• 2019

기술융합을 통해 R&D 경쟁력을 확보함과 더불어, 융합의 정도를 측정하고 이를 기반으로 융합을 유도하기 위한 전략에 대한 관심도 함께 증대되고 있다. 본 연구에서는 출연연의 융합연구전략을 도출할 수 있는 데이터 기반 모형을 제시하였다. 우선적으로, 출연연 연구과제의 융합특성을 기술고유의 속성과 행위자의 행태 속성으로 구분하여, 각각의 대리변수(Rao-Stirling 지수, Herfindahl-Hirschman 지수)계산 방법을 고안하였다. 이들 대리변수를 두 축으로 출연연 융합맵을 설계하였으며, 이를 통해, 출연연 연구과제가 4개의 속성(Alliance-Intra, Alliance-Inter, Competition, Mission Oriented)으로 구분됨을 알 수 있었다. 이와 같이 설계된 융합맵을 기반으로 융합지수를 측정하여 출연연 간 30대 융합연구 가능영역을 도출하였다. 이러한 과정을 통해 출연연 연구과제의 기술융합 현상에 대한 보다 정확하고 객관적인 분석을 수행할 수 있으며, 이를 바탕으로 융합연구 추진을 위한 정책에 참조할 수 있는 유효한 가이드라인을 제공할 것으로 기대한다.

• Elastomers and Composites
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• 제55권1호
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• pp.13-19
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• 2020

4,4'-Methylenebis(2-chlorobenzenamine) (MOCA)-free fast curing polyurethanes were prepared. In this study, the processibility of a fast curing polyurethane system was characterized by assessing the pot life. The obtained pot life of the polyurethane was 6-8 s, indicating that this prepolymer-curative system is appropriate for ribbon flow casting. The influence of the NCO index on the viscosity and mechanical properties was evaluated. The viscosity, tensile strength, tear strength, and hardness of the as-prepared polyurethanes showed an increasing trend, with an increase in the NCO index, whereas the elongation at break increased initially and then decreased with an increase in the NCO index. The gel fraction and crosslink density showed a direct correlation with the NCO index, which substantiated the improved mechanical properties at the higher NCO index. The coefficients of friction and abrasion deteriorated with an increase in the NCO index.

• 한국컴퓨터정보학회논문지
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• 제24권9호
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• pp.83-95
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• 2019

Recently, a variety of IoT data is collected by attaching geosensors to many vehicles that are on the road. IoT data basically has time and space information and is composed of various data such as temperature, humidity, fine dust, Co2, etc. Although a certain sensor data can be retrieved using time, latitude and longitude, which are keys to the IoT data, advanced search engines for IoT data to handle high-level user queries are still limited. There is also a problem with searching large amounts of IoT data without generating indexes, which wastes a great deal of time through sequential scans. In this paper, we propose a unified spatial index model that handles both grid and trajectory queries using a cell-based space-filling curve method. also it presents a visualization method that helps user grasp intuitively. The Trajectory query is to aggregate the traffic of the trajectory cells passed by taxi on the road searched by the user. The grid query is to find the cells on the road searched by the user and to aggregate the fine dust. Based on the generated spatial index, the user interface quickly summarizes the trajectory and grid queries for specific road and all roads, and proposes a Web-based prototype system that can be analyzed intuitively through road and heat map visualization.

• 한국의류산업학회지
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• 제20권6호
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• pp.752-758
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• 2018

Due to environmental pollution and human hazards of some synthetic dyes, the global fashion companies are increasingly interested in eco-friendly products, especially natural dye. For the globalization of natural dyeing industry based on this concern, however, there are some deficiencies of standardization, specification, and conformity assessment on natural dyestuffs as well as natural dyeing process. These obstacles should be not only studied but also defined for a commercial transaction. Accordingly, a study for conformity assessment on commercialized natural dyestuffs (red) was conducted by HPLC analysis in this study. As the results of HPLC analysis, alizarin and purpurin, representative index ingredients, were detected in most of the samples, but the index ingredient content in each sample was different. In addition, some samples showed the variety of peaks including the index ingredients and others. It was inferred that the representative index ingredients could be used on the traceability of natural sourced dyestuffs. These results are related to the index ingredient consistency, standardization, and reproducibility of natural dyed products including such as yarns, fabrics, garments, and so on. Therefore, the present study was demonstrated that in order to determine the conformity assessment system for the satisfaction of all stakeholders, the offering of information on the origin, manufacturing process, and index ingredient content of natural dyes should be prioritized.

• 대한산업공학회지
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• 제39권3호
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• pp.222-232
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• 2013

In recent years, 'technological fusion or convergence' has drawn a lot of attention of innovation researchers and governmental policy makers as the driving force of technological innovation and industrial growth. There are, however, few studies on the analysis of longitudinal trends of technological convergence and its comparison between global and national level. In this study, with the citation data of about 18 million articles, we analyzed 1) the growth of representative convergence research areas, 2) the convergence of citing patterns between research fields, and 3) the changing trend of diversity index of all research fields. We conclude that technological convergence in korea shows the relatively strong orientation to the combination of neighboring fields than that of heterogenous fields in comparison to global trend. In particular, the relatively weak activity of cognitive science and the low level of mutual exchange between arts/humanities/social sciences and natural/engineering sciences in Korea are emphasized.

• ETRI Journal
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• 제36권5호
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• pp.841-846
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• 2014

This study proposes a novel optical sensor structure based on a refractometer combining a bend waveguide with an air trench. The optical sensor is a $1{\times}2$ splitter structure with a reference channel and a sensing channel. The reference channel has a straight waveguide. The sensing channel consists of a U-bend waveguide connecting four C-bends, and a trench structure to partially expose the core layer. The U-bend waveguide consists of one C-bend with the maximum optical loss and three C-bends with minimum losses. A trench provides a quantitative measurement environment and is aligned with the sidewall of the C-bend having the maximum loss. The intensity of the output power depends on the change in the refractive index of the measured material. The insertion loss of the proposed optical sensor changes from 3.7 dB to 59.1 dB when the refractive index changes from 1.3852 to 1.4452.