• The Korean Journal of Applied Statistics
• /
• v.24 no.1
• /
• pp.83-92
• /
• 2011

This paper examines empirically Durham's (2008) asset pricing models to the KOSPI200 index. This model Incorporates the VKOSPI index as a proxy for 1 month integrated volatility. This approach uses option prices to back out implied volatility states with an explicitly speci ed risk-neutral measure and risk premia estimated from the data. The application uses daily observations of the KOSPI200 and VKOSPI indices from January 2, 2003 to September 24, 2010. The empirical results show that non-affine model perform better than affine model.

• Journal of the Economic Geographical Society of Korea
• /
• v.11 no.4
• /
• pp.527-548
• /
• 2008

It is said that there exist trouble factors of female-owned businesses and they disturb the growth of female-owned businesses. This paper, focusing on the balancing of work and family roles and discontinuance of career, examines whether trouble factors of female-owned businesses can explain the characteristics of female-owned businesses in Kwangju-Cheonnam region. The results show that these disturbing factors effect the accumulation of capitals for start-ups of femaleowned businesses and careers of female business owners, so that female-owned businesses enter disproportionately on service industry and their sizes are small. These support existing study results.

• Journal of Engineering Education Research
• /
• v.11 no.4
• /
• pp.109-114
• /
• 2008

The purpose of this study was to investigate the relationship between self-leadership and teamwork in cooperative learning of capstone design. The results showed significant relationship between self-leadership and teamwork, with high self-leadership group obtaining higher teamwork scores than low self-leadership group. The results of stepwise analysis suggested that cognitive-oriented strategies, including cooperating more pleasant and enjoyable features into a given task, focusing on the task's inherently rewarding aspects, and focusing thoughts on positive aspects of the task, were the best predictors of overall teamwork. Therefore, it would be useful to provide the engineering students with the opportunities to develop their cognitive-oriented self-leadership strategies.

• Korea Petroleum Association Journal
• /
• no.11 s.239
• /
• pp.86-89
• /
• 2003

온실가스 감축 의무를 규정한 쿄토의정서의 발효 여부를 결정지을 기후변화협약 제9차 당사국회의(cop9)가 12월 1일부터 12일까지 이탈리아 밀라노에서 개최되고 있다. 기후변화협약은 지구온난화 현상과 기상이변을 일으키는 온실가스를 지난 1990년 수준에서 더 이상 늘리지 않기로 한 국제협약이다. 기후변화협약은 지난 1992년 6월 '리우환경회의'에서 채택돼 각국 비준을 거쳐 1994년부터 발효됐다. 하지만 기후변화협약은 강제성이 없어서 어느 나라도 이산화탄소를 줄이는 조치를 적극적으로 취하지 않았다. 이러한 문제점을 해결하기 위하여 1997년에 마련된 '쿄토의정서'가 채택되었다. 이에 의하면 선진 38개국들은 2008~2012년 사이에 1990년 발생량보다 평균 5.2%를 더 줄이기로 합의하고 세계 온실가스 배출량의 55%의 비준을 의정서 발효조건으로 규정하였다. 그러나 이산화탄소 최대 배출국인 미국이 2001년에 탈퇴를 선언하고, 배출량의 17.4%를 차지하는 러시아도 최근 비준 거부의사를 밝히고 있어 쿄토의정서의 발효는 사실상 어려워진 상태이다. 쿄토의정서가 발효되지 않고 폐기되더라도 기후변화 협약은 유효하기 때문에 새로운 의정서 논의가 제기될 전망이며, 세계 9위의 온실가스 배출국인 우리나라에 대한 온실가스 감축의무 부담요구는 가중될 전망이다. 다시 관심의 초점으로 떠오르는 기후변화협약에 대한 이해를 돕기 위해 산업자원부가 발표한 자료를 게재 하였다.<편집자 주>

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
• /
• v.10 no.4
• /
• pp.49-57
• /
• 2015

This research is to analyze the mediating effect of product innovation between work-life balance (work-family balance, work-leisure balance and work-development balance) and corporate performance in venture SMEs. We test four hypothesis. First, we test the hypothesis that work-life balance has a positive effect on product innovation. Second, we test the hypothesis that product innovation has a positive effect on corporate performance. Third, we test the hypothesis that work-life balance has a positive effect on corporate performance. Fourth, we test a positive mediating role of product innovation between work-life balance and corporate performance. For this research, we administered the questionnaire surveys, and got the 162 effective data of korean venture SMEs. We use CFA and SEM analysis of research model by AMOS 18.0. As a result, we can find the four meaningful results. First, work-life balance, especially only work-development balance, has a positive effect on product innovation. Second, product innovation has a positive effect on corporate performance. Third, the relationships between work-life balance (work-family balance, work-leisure balance and work-development balance) and corporate performance are no significant after the mediating variable (product innovation) is added. Fourth, product innovation has a positive mediating effect between work-life balance, especially only work-development balance, and corporate performance. Although this research has some limitations of generalization because of the limited size of samples, we has meaningful information related to the venture companies in the academic and business field. Additionally, the Multiple Indicator Multiple Cause(MIMIC) model is recommended in the future research.

• Journal of the Korea institute for structural maintenance and inspection
• /
• v.20 no.6
• /
• pp.10-19
• /
• 2016

The objective of this study is to investigate the self-healing properties of ternary blended cement(TBC) paste made with OPC, GGBFS and FA. The influence of OPC-GGBFS-FA on the self-healing ability of ternary blended cement paste was researched by ultrasonic pulse velocity(UPV) measurement. The TBC paste with GGBFS-FA replacement ratios of 20%, 40% and 60% were prepared having a constant water-cementitious materials ratios os 0.5. The research focuses on behavior after 28days(after loading). Four-point bending tests are used to pre-cracked the prismatic specimens at 28days. For specimens (uncracked and cracked) submerged in tap-water and sea-water until 60days. According to the experimental results, the TBC paste system has self-healing ability increased when the fraction of GGBFS increased. Because GGBFS and FA continues to hydrate after 28days, it is likely that hydrated products from GGBFS and FA may modify microstructures, seal these cracks. From these results, it is clear that the crack in all samples experience self-healing and that this occurs mostly in the first 30days of submerging. Futhermore, most of the healing for both specimens of submerged in sea-water and tap-water occurred during the first 30days. Sea-water submerged specimens healed cracks as fast as those in tap-water. Differences in healing effects of submerged in sea-water and tap-water may be attributed to the presence of specific sea-water ions. Therefore, self-healing effects considered age-effects was more strong effect occurred mostly in the first 30days, and then gradually weaken.

• Journal of Practical Engineering Education
• /
• v.12 no.1
• /
• pp.145-162
• /
• 2020

The dual system in Korea already plays an important role in quantitative terms in the Korean lifelong vocational competency development system. However, since most of the existing dual system performance management plans in Korea focus on qualification-linked dual system, research on the effective performance management of the four-year university-driven dual system is very insufficient. This paper presents multiple measures for developing a performance management system suitable for the university-driven dual system to achieve qualitative improvement of the contract departments of the dual colleges or universities. As an approach to the end, a performance evaluation system is established by developing the evaluation items and indicators for the dual colloeges' contract departments. Next, it analyzes the needs of various stakeholder groups such as field teachers of the involved companies, students in apprenticeship and OJT professors of KOREATECH through FGI's and polls to diagnose the current operational performance, especially the causes of high drpout rates of the contract departments. From these results, the paper presents firstly the development of measuring methods for the developed performance indicators of the evaluation system and then a systemic performance management system which is based on 'input-transformation-outcome-feedback' structure. In addition, some measures for improving the high dropout rate and performance are presented from the viewpoints of each stakeholder.

• Journal of Power System Engineering
• /
• v.13 no.2
• /
• pp.18-29
• /
• 2009

미세유동에 대한 폭발적인 관심에 의해 이 분야의 연구는 다양한 측면에서 이루어지고 있다. 본 연구는 사각 미세채널에서의 슬립유동에 관한 연구 중 아직 제대로 이루어져 있지 않은 마찰특성에 관한 종횡비의 영향에 초점을 맞추어 3차원 수치해석을 행하였다. 그 결과 종횡비가 1.0 일 때 상하 벽면 및 좌우측 벽면에서의 전단음력은 동일하나, 종횡비가 감소함에 따라 전단응력은 상하 벽면과 좌우측 벽면이 상이한 강도로 증가함을 보였다. 또한 Knudsen 수의 증가에 따라서는 전단응력이 감소함을 알 수 있었다. 따라서 벽면에서의 전단응력은 종횡비를 증가시키거나 혹은 Knudsen 수를 증가시키면 감소시킬 수 있으며, 마찰계수(fRe)도 종횡비를 증가시키거나 혹은 Knudsen 수를 증가시키면 감소됨을 밝혔다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2010.10a
• /
• pp.203-205
• /
• 2010

대부분의 관제사들은 매일 다루고 있는 콘솔에 불편한 느끼는 일이 많다. 하지만 이러한 관제사들의 생각이 VTS 시스템 개발에 반영되지 못하고 있는 것도 사실이다. 현재 개발 중에 있는 u-VTS(차세대 한국형VTS)에 관제사들의 현장 경험을 접목시키는 것이 중요하다. 본 연구는 유저 인터페이스에 대해서 알아보고, 관제사의 상황자각 및 의사결정에 실질적인 도움을 줄 수 있는 방향으로 운영자 콘솔의 유저 인터페이스가 개선되도록 하는데 초점을 두었다.

• 한우개량
• /
• no.5 s.26
• /
• pp.16-24
• /
• 2000

IMF체제하에서 사료값 폭등과 소값 폭락으로 한우산업이 위기를 벗어난 게 어제일 같은데 또다시 구제역이 축산업에 밀어 닥쳐 한우농가 여러분의 마음고생이 크실 줄로 생각됩니다. 다행히 구제역이 진정되어 가고 있습니다. 더 이상의 큰 손실없이 잘 마무리 될 수 있도록 다같이 노력해야 되겠으며 이 일을 계기로 나 혼자서도 잘 할 수 있다는 이기적인 생각들은 버리고 한우농가 개개인이 한우지킴이가 되어 2001년 수입개방의 완전자유화에 대응키 위한 노력들을 보여야 될 것으로 생각됩니다. 그 대안의 하나로 수입고기보다 신선한 맛과 질 그리고 위생과 안전함에서 경쟁력 우위에 서고자 한우 고급육생산에 초점을 맞춰 관련기관단체 및 전문가들은 연구 노력하여 왔으며 그 기술적인 방법들이 많은 정보지 및 축산담당자들에 의해 전달되어 졌습니다. 지금껏 고급육생산에 대하여 않은 내용의 정보가 기술되어 왔기에 깊이 있는 내용보다는 고급육생산농가 스스로가 지금의 사양관리를 되돌아보면서 가벼운 마음으로 읽어 주었으면 하는 바램입니다.