• 대한기계학회논문집A
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• 제20권5호
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• pp.1582-1589
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• 1996

Rapid prototyping is a new prototyping technology which produces three dimensional part models directrly from CAD data and has been extensively applied to various manufacturing processes. There are many types of rapid prototyping systems due to their building principles and materials. In this work, Stereolithography Appaaratus(SLA) which is the most widely-used rapid prototyping system is introduced to achieve die/mold technology innovation. For the purpose, the prototyping technology using SLA is developed such that patterns of which shapes are quite complicated are successfully produced with high accuracy. Using these patterns, prototype die/molds are efficientrly manufactured; a turbocharger rotor, a fan and a wheel patterns, prototype die/molds are efficienterly manufactured ; a turbochager rotor, a fan and a wheel pattern are made, and the molds of the investment casting, the injection molding and the die casting are manufactured respectively. The casting products are produced using these molds and it turns out that these methods are quitre effective for manufacturing products of complicated geometry from the viewpoint of efficiency and productivity.

• Journal of Animal Science and Technology
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• 제47권2호
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• pp.261-270
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• 2005

Total number of 237 Hanwoos were purchased from the nationwide fanns based on the different market weights and sex. After slaughtering, they were evaluated to estimate the productivity of carcass components by the sex and market weight, and to predict the beef carcass yield grade equation. The main results in this study were summarized as follows; With respect to carcass characteristics, the yield percentages were different(P < 0.01) among sex groups, but were not different among market weight groups. Sex or market weights showed significant effects on the carcass yield grade(YG) factors(BFT, RA, carcass weight(CW). The YG equation from this study could be expressed as a multiple regression y = 64.74 - 0.0198 ${\times}$ CW(kg) - 5.226 $\time$ BFT(cm)+0.1339 $\time$ RA($cm^2$ $R^2$ = 0.52 Among the YG factors, the BFT was the highest contributor to the YG equation. Compared the previous equation reported in 1992 with the equation from this study, the bias values between predicted value and the actual cutability were 9.17 and 2.39, respectively. In conclusion, the equation estimated from this study was more accurate in predicting the cutability than that from the previous equation reported in 1992.

• 한국사회복지학회:학술대회논문집
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• 한국사회복지학회 2004년도 심포지엄 한국 사회안전망의 현황과 대책
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• pp.3-50
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• 2004

${\cdot}$ Recent social policy and labour markets debates in Europe, responding to the difficulties faced by the traditional neo-Keynesian welfare state settlement, stress the value of positive investment alongside de-regulation and greater flexibility as a way of achieving both economic and social goals. ${\cdot}$ Patterns of policy reform are complex and reflect differing national circumstances. A general move towards deregulation, constraints on entitlement to passive benefits, programmes to enhance employment, particularly among high-risk groups such as single parents and young people, targeted subsidies for low earners and casemanagement may be identified. ${\cdot}$ In relation to investment in education, research and development and combined training and benefit programmes to enhance mobility between jobs the picture is less clear. Education standards continue to rise, but research and development spending stagnates and few countries have developed substantial ‘flexi-curity’ programmes to support job mobility. ${\cdot}$ The labour market tradition in much of Europe has been one of conflict between labour and employers. As labour grows weaker, new approaches develop. These tend to stress productivity agreements and greater flexibility in work practices within firms and reforms to passive social security systems more broadly, but movement to support the more challenging investment and flexi-curity policies is slow. ${\cdot}$ In general, social and labour market policies in Europe stress deregulation and negative activation more strongly than social investment and ‘flexi-curity’. The countries with high growth and employment achieve that goal by different routes: Sweden has a closely integrated social democratic corporatism with high spending on benefits and training programmes and the UK a more liberal market-oriented system, with lower spending, highly targeted benefits and less mobility support. ${\cdot}$ Europe has something to learn from Korea in achieving high investment in human capital and R and D, while Korea may have something to learn from Europe in social investment, particularly flexi-curity and equal opportunity policies.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2013년도 추계학술대회
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• pp.817-820
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• 2013

최근 스마트 시대의 도래와 함께 저출산 고령화, 노동생산성 저하, 저탄소 녹색성장 등 우리 사회 현안을 해결하고, 개인의 일과 삶을 조화시킬 수 있는 스마트워크에 대한 관심이 증가하고 있다. 특히, 스마트워크 서비스의 핵심 서비스인 텔레프레즌스에 선진 각국의 기술 개발 및 이를 기반으로 한 국제 표준선점을 위한 표준 경쟁이 심화되고 있다. 그러나, 국내의 경우 텔레프레즌스 핵심 기술 기반이 취약하고 기존의 조직문화의 장벽으로 인하여 텔레프레즌스 연구 개발 및 보급 활성화가 미흡하다. 이러한 환경에서 스마트워크를 조기에 실현하고, 세계 텔레프레즌스 시장에서 주도적인 위치를 확보하기 위해서는 텔레프레즌스 시장을 주도할 핵심기술에 대한 표준화 전략 수립 및 활성화 방안 수립을 통한 체계적인 추진이 필요하다. 따라서 본 논문에서는 텔레프레즌스 도입 현황, 기술 및 표준화 동향 등을 분석하여 우리나라가 텔레프레즌스를 선도할 수 있도록 향후 표준화 및 활성화 방안을 제시하고자 한다.

• 경영과정보연구
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• 제36권2호
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• pp.93-111
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• 2017

본 연구는 4차 산업혁명을 맞이하여 ICT기반 미래 신성장동력 산업의 경제적 파급효과를 알아보고, 이를 위한 신성장 동력의 성공요인은 무엇인지 분석하고자 하였다. 이를 위해, 기술보증기금에서 제시하는 기술평가모형 자료를 활용하였다. 구체적으로, ICT기반 신성장동력 산업의 경제적 효과를 경제성과 공공성으로 나누어 효과를 검증하고, 기술평가모형의 요인들 즉, CEO역량, 기술성, 사업성이 기업의 경제성 및 공공성에 미치는 영향을 조사하였다. 분석결과, 미래성장동력 산업에 해당하는 기업의 경제성 및 공공성에 대한 파급효과는 긍정적으로 나타났으며, 기업의 사업화 역량은 경제성과 공공성 효과를 증가시킬 성공요인으로 나타났다. 이러한 연구결과를 토대로 미래 신성장동력 산업의 기술혁신 산업정책의 관리 및 지원방안을 제시하고자 한다.

• 대한안전경영과학회지
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• 제12권2호
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• pp.183-192
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• 2010

Korean logistics industry have been focused on transportation business. However, with the expansion of the electronic commerce and on-line shopping, delivery service is now dramatically growing. Despite the expansion of logistics market, the domestic logistics industry have significant structural problems such as low productivity comparing with the advanced countries, relatively high cost and shortage of human resources and lack of professionalism of people in the industry. Logistics companies reallocate employees, use subcontractors, expand consignment and training the employees to overcome the labor shortages but it has some limits. In recognition of the importance of labor in the logistics industry, financial support and investment have increased. Logistics companies tend to hire consultants, set up logistics department or R&D center in order to establish highly productive logistics process and system so it is viewed that there will be considerable demands of human resources in the logistics industry. This study indicates implications and development direction of human resources in the logistics industry by looking into prospect and characteristic of the industry, employment status, training programs and qualification requirements.

• 디지털융복합연구
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• 제17권12호
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• pp.129-137
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• 2019

본 연구의 목적은 중국 자치성별 과학기술 예산활용 효율성을 분석하고 개선방향을 제시하는 것이다. 중국교육부가 공시한 2013-2017년의 고등교육 통계연감에서 데이터를 확보하여, 맘퀴스트 분석방법을 활용해 투입대비 산출의 효율성을 분석하였다. 분석결과 기술 진보가 낮은 것은 생산성 MPI지수의 변동을 일으키는 원인이며, 기술적 효율성의 영향을 받은 도시는 효율성을 높이려면 지역 내 대학의 내부 조율, 구조조정 등 내부적 요인의 개선이 필요한 것으로 파악되었다. 기술변화의 영향을 받은 지역은 정부정책, 경제 환경, 사회 환경이나 기술의 발전 등 외적 요인에 대한 적절한 대응이 필요한 것으로 파악되었다. 본 연구는 중국의 자치성별로 과학기술 예산활용 효율성을 제고하는 데에 참고자료를 제시하였다는데 의의가 있으며, 향후 비효율적인 지역의 효율성을 높이기 위한 전략의 수립 및 필수적인 요소에 대한 연구가 필요하다.

• 기술혁신학회지
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• 제11권2호
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• pp.171-193
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• 2008

21세기를 맞이하여 세계 각국은 자국의 지식재산권을 보호하기 위한 정책을 추진하고 있으며, 이와 같은 지식재산권을 보호강화하기 위한 국제적 동향은 더욱 더 강력해지고 있다. 이러한 환경에서 기업은 사활을 걸고 기술보호와 경영을 어떻게 할 것인가에 대한 최적인 방법을 모색하여야 하며, 기업의 지식재산관리는 관리적인 차원이 아닌 경영적인 차원에서 고려되어야 한다. 즉, 기업은 산업재산권을 경영자원의 하나로서 전환하여야 하며 그 중요성은 기업의 생존에도 큰 영향을 미친다. 특허 데이터는 기업 전략 수립의 중요한 정보이다. 이 연구에서는 우리나라 금속기업 27개사를 대상으로 특허활동을 체계적으로 분석하였다. 2000년부터 2005년까지의 특허데이터를 이용하여 특허경영과 기업경영성과와의 관계를 분석하였다. 이 연구의 주요 결과로는, 노동생산성은 종업원 1인당 특허활동도와 유의한 양(+)의 관계가 있는 것으로 나타났지만, 기업규모와는 유의한 음(-)의 관계가 있는 것으로 나타났다. 따라서 특허 활동은 기업의 연구개발계획을 수립하는데 중요한 역할을 할 젓으로 생각한다.

• Journal of Information Processing Systems
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• 제14권3호
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• pp.645-654
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• 2018

Information and communication technology (ICT) is increasingly recognized as an important driver of economic growth, innovation, employment and productivity and is widely accepted as a main feature of development. During the last couple of decades, ICT sector became the most innovative service sector that affected the living standards of human beings all over the world. In the beginning of the $21^{st}$ century, some of the Asian countries made reforms in the ICT sector and spent an enormous amount for the progress of this sector. On the other hand, developed countries in the European Union (EU) faced different crises which badly affected the dissemination of this sector. Consequently, EU countries lost their hegemony in the field of information technology and resultantly, some of the emerging Asian countries like China, India, and South Korea got supremacy over the EU in this field. Currently, these countries have a strong IT infrastructure, R&D sector, IT research centers working for the development of ICT. Moreover, this paper investigates reasons for the shifting of the balance of digital power from Europe to Asia.

• International Journal of Industrial Entomology and Biomaterials
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• 제41권2호
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• pp.36-44
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• 2020

Mulberry root bark is one of potential plant sources for antioxidant materials which can be used for the relief of oxidative stress. To explore the effects of solvent type and temperature on the structural characteristics and antioxidant activity of the root bark extracts, we prepared various extracts of mulberry root bark (Morus alba L.) using 0 - 100 % ethanol (EtOH) at RT - 100℃. EtOH concentration and temperature critically affected the extraction yields, the content of bioactive components, and antioxidant activity of the extracts. Use of high content of EtOH solvent and low temperature resulted in the low extraction yield. Meanwhile, it was revealed that the extract prepared using absolute EtOH at room temperature contained polyphenols and flavonoids with the highest contents among other extracts. Interestingly, the temperature differently affected the polyphenol and flavonoid contents according to the solvent types. In the case of 30% EtOH solvent, polyphenol and flavonoid contents increased with an increase in temperature, whereas in the case of 70 and 100 % EtOH, these contents decreased. Using the radical scavenging assay, it was confirmed that the 100% EtOH extracts had higher antioxidant activity compared to distilled water (DW) extracts regardless of temperature. Also, heating might extract more antioxidant components from the root bark. Especially, the extract prepared using 30% EtOH solvent at 100℃ showed the highest antioxidant activity. Taken together, these experimental results imply that the extraction parameters should be designed carefully considering the productivity, the extracted bioactive components, and antioxidant activity.