• Transactions of the Korean Society of Automotive Engineers
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• v.5 no.4
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• pp.39-47
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• 1997

The focus of this research is to set up and describe the mathematical derivation of an automobile power-assisted rack and pinion steering system dynamics. The mathematical model of the power steering system dynamics with a 5 DOF linear vehicle model will be used in the computer simulation and evaluated comparing with the experimental results. This model is flexible to accommodate different vehicles through simple parameter changes. The developed mathematical model will attempt to provide enhanced driver realism to a Systems Technology, Inc. driving SIMulator(STISIM).

• Women's Health Nursing
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• v.13 no.1
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• pp.13-20
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• 2007

Purpose: This study was performed to examine the knowledge of HPV in female university students. Methods: Participants consisted of 285 female university students(nursing major;153, others;132). A dichotomy with 20 items of HPV knowledge was developed by a researcher. Results: Reliability of the HPV knowledge tool was Cronbach' alpha .87, and Split-half Guttman coefficient .85. Correction rates of HPV knowledge by item ranged from 19.6 to 76.8%. There were no significant differences in HPV knowledge scores by major group or sex related characteristics. Conclusions: Accurate, university wide education regarding HPV knowledge for female university students should be done regardless of the major; nursing or not. Replication studies with different ages or sex groups and application of HPV education in relation to STI prevention and cervical cancer prevention are recommended.

• Journal of Powder Materials
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• v.2 no.2
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• pp.165-170
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• 1995

Alloying behavior of nanocrystalline Al-Ti-(Si) composite powders via mechanical alloying (MA) has been investigated, and the effect of Si on the microstructural changes during MA was discussed. The microstructures of both MA powders and extruded compacts were examined. In Al-Ti system, the solid solutionized nanocrystalline powders could be obtained by MA. On the contrary, fine Si particles were embedded as an elemental state in the matrix of Al-Ti-Si system because of the brittleness and the negligible solid solubility of Si in Al. After hot extrusion, $Al3Ti$ phase was finely precipitated in Al-10fSTi alloy, and Si particles were dissolved to form $(Al, Si)_3Ti$ phase in Al-10%Ti-2%Si alloy.

• Journal of The Korean Society of Agricultural Engineers
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• v.54 no.2
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• pp.127-135
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• 2012

The processes of chemical and physical weathering occur simultaneously. The objective of this study was to estimate the degree weathered using fractal dimension through comparison with chemical characteristic of soil samples from Pohang (PH) and Kimpo (KP). Comparing chemical characteristics with fractal dimension, $SiO_2$, $Na_2O$, $K_2O$ content decreased and loss of ignition increased as fractal dimension increased. And fractal dimension showed high correlation with CWI while ATI, STI CIW, PI, CIA and RR demonstrated different degrees of correlation with fractal dimension. The tendency of the changes in oxide content and chemical weathering index with increasing fractal dimension appeared to be similar with the chemical changes due to weathering. Therefore, fractal dimension could be a good indicator representing the extent of weathering and chemical changes.

• Journal of Microbiology and Biotechnology
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• v.1 no.3
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• pp.207-211
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• 1991

Yeast fermentation at $40^{\circ}C$ was conducted for microbial protein production and COD reduction in three different sugar beet stiIlages by a thermo- and acid-tolerant yeast Candida rugosa isolated from East Africa. The assimilation proceedings of some main components such as protein, carbohydrate, total titrable acids and glycerol in stillages were observed with growth kinetics of the yeast. Most of glycerol and organic acids were rapidly assimilated at the beginning of the fermentation. Protein assimilation was slowly accelerated with the proceeding of fermentation time and its assimilation rate reached only 14.2%-28.4%. Though Candida rugosa was a flocculent yeast, the flocculation characteristics of the yeasts grown in three stillages were different from each other.

• STI Policy Review
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• v.6 no.1
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• pp.54-69
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• 2015

Although there is progress in developing green sectors in North America and East Asia, the key challenge facing the expansion of economy-wide green innovation and structural change in these regions is the absence of relevant policy follow-up to the green stimulus enacted during the Great Recession. The boost to green sectors provided by such measures is waning quickly, given that much of the green stimulus focused on energy efficiency. The biggest obstacles to sustaining green growth in North America and East Asiaare major market disincentives, especially the under-pricing of fossil fuels and market failures that inhibit green innovation. A three-part strategy to overcome these obstacles would involve: first, removing fossil fuel subsidies; second, employing market-based instruments to further reduce the social costs of fossil fuel use; and third, allocating any resulting revenue to public support for green innovation and investments. Such a strategy would ensure that green growth is not about promoting niche green sectors but instigating economy-wide innovation and structural transformation in North America and East Asia.

• STI Policy Review
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• v.6 no.2
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• pp.87-104
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• 2015

Public procurement for innovation is used as one of the major policy tools to stimulate innovation and promote growth of small and medium-sized enterprises (SMEs) in Korea. However, it is evaluated that this policy has not been so effective in promoting technological innovation among SMEs largely because it heavily depends on price competitiveness of SMEs products and services. In order to draw some policy implications, this study examines the PPI policies of selected countries as comparative references and conducts an empirical analysis on Korean Public Procurement Services (PPS) data for identifying challenges of the current policy in Korea. We conclude that in order to enhance technological innovations of SMEs, PPI policy in Korea should 1) focus more on the potential competitiveness of SMEs, 2) enlarge public demands especially on R&D services, 3) encourage private sector participation in the public procurement market, 4) improve the assessment criteria for public procurement market registration, and 5) restructure the responsible organizations.

• STI Policy Review
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• v.7 no.1
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• pp.40-65
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• 2016

Knowledge plays a more important role in promoting entrepreneurship in the current information-led society than it did during the age of industrialization. Many recent studies found that entrepreneurship stimulates and generates innovation and economic growth. In response to the issues of long-term low growth, the Japanese government implemented several policies to encourage universities initiate entrepreneurial activities. This paper examines Japanese policies since 2014 that support universities in providing various programs for developing global entrepreneurs. Thirteen academic institutes were beneficiaries of three-year funding since the fiscal year of 2014. Each university designed its own educational programs according to their own contexts, built various forms of innovation ecosystems with domestic as well as international partner organizations, and offered entrepreneurship training courses or innovation workshops for companies to sustain its programs through broadening their funding bases. Due to the interdisciplinary nature and short history in operating the programs so far, it is difficult to evaluate the effectiveness of the programs. However, each participating university accumulated knowledge and experience while carrying out their various programs, suggesting important new directions for policymakers and education program designers in facilitating entrepreneurship and innovation.

• STI Policy Review
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• v.7 no.1
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• pp.110-148
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• 2016

This study examines the technical level of North Korea's S&T and identifies areas for potential North-South cooperation. First, North Korean media is analyzed for situations and trends from 2010 to 2015. Despite some commendable achievements, North Korean S&T remains lacking in basic science and commercialization potential. Despite an awareness of the importance of international cooperation, North Korea is hampered by international sanctions and their own caution, consequently concentrating their efforts on China. Details of their cooperation reflect their interests and needs to a certain extent, although their collaborations were mainly in the form of meetings and conferences rather than active joint research. To assess the potential areas of cooperation with South Korea, this study also draws on interviews with NGOs and professionals working with North Korea. The country's present situation is analyzed and some practical examples of possible cooperation is suggested. North Korea has the potential to expand its cooperation not only with South Korea but with many other countries. North Korea also promisingly expresses interest in cooperation.

• STI Policy Review
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• v.6 no.2
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• pp.146-173
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• 2015

This study explores how to reconcile science and policy in the wind energy sector by providing a conceptual framework for better understanding evidence-based policymaking (EBPM). Regarding this framework, the core issue is to discover how knowledge is formed over time, and which factors affect this knowledge formation. Comparative cases of wind industry emergence in Spain and Britain are examined. This analysis shows that knowledge formation initially starts in the scientific arena in parallel with its formation in the practical, and is followed by political knowledge formation near the beginning of commercial projects. Regarding knowledge formation, three more comparisons are made between wind industry emergence in Spain and Britain: the different approaches to R&D projects, the different adoptions of supporting measures, and the different ways of coping with public opposition. The factors affecting the comparisons are mainly perceptions of energy supply, nuclear power, environment and science and technology. Communication and unfamiliarity are likely to affect the comparisons in EBPM.