• 대한교통학회지
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• 제29권5호
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• pp.19-32
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• 2011

도로교통 안전분야에 투자되는 예산분야는 일반적으로 교통안전시설분야(Engineering), 교통단속분야(Enforcement), 교통안전교육 및 홍보분야(Education)의 3가지로 구분하고 있으며, 이것을 3E 정책이라 한다. 본 연구에서는 이러한 항목별 투자가 도로교통사고 감소에 어느 정도의 영향을 미치는 가에 대해 패널분석을 통해 추정하고자 하였다. 종속변수는 교통사고 건수, 사망자, 부상자수로 구분하였고, 설명변수로는 기존 연구에서 주로 이용되었던 인구, 자동차등록대수, 도로연장거리에 본 연구의 주된 관심사인 교통안전시설투자예산, 교통안전교육 및 홍보예산, 단속건수를 15개 지방자치단체의 지역자료와 1992년부터 2007년까지의 연도별 자료를 사용하였다. 전체 교통사고를 종속변수로 한 분석결과 동일한 투자액에 대비하여 교통안전교육 및 홍보투자가 시설투자에 비해 효과가 큰 것으로 분석되었다, 또한 6가지 세부교통사고로 분리한 분석결과에서도 동일한 결과를 보여 현재 교통 안전시설투자 위주로 이루어지고 있는 교통안전예산을 교통안전교육 및 홍보에도 분배될 필요성이 있음을 시사하고 있다.

• 수산해양기술연구
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• 제35권3호
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• pp.335-342
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• 1999

The purpose of present research is to develop and efficient numerical method for the calculation of potential flow and predict the wave-making resistance for the application to ship design of tuna purse seiner. Havelock was considered the wave resistance of a post extending vertically downwards through the water from the surface, its section by a horizontal plane being the same at all depths and having its breadth small compared with its length. This enables us to elucidate certain points of interest in ship resistance. However, the ship has not infinite draft. So, the problem which is investigated ind detail in this paper is the wave resistance of a mathematical quadratic model in a uniform stream. The paper deals with the numerical calculation of potential flow around the series 60 with forward velocity by the new slender ship theory. This new slender ship theory is based on the asymptotic expression of the Kelvin-source, distributed over the small matrix at each transverse section so as to satisfy the approximate hull boundary condition due to the assumption of slender body. The numerical results using the panel shift method and finite difference method are compared with the experimental results for wigley mono hull. There are no differences in the wave resistance. However, it costs much time to compute not only wave resistance but also wave pattern over some range of Froude numbers. More improvements are strongly desired in the numerical procedure.

• 전기학회논문지
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• 제60권6호
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• pp.1091-1096
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• 2011

Currently, the concern about the environment is the issue all over the world, and in particular, carbon emissions of the power plants will not be able to disregard from the respect of generation cost. This paper proposes DR (demand response) as a method of reducing carbon emissions and therefore, carbon emissions cost. There are a number of studies considering DR, and in this paper, the effect of DR is focused on the side of carbon emission reduction effect considering Time-Of-Use (TOU) program, which is one of the most important economic methods in DSM. Demand-price elasticity matrix is used in this paper to model and analyze DR effect. Carbon emissions is calculated by using the carbon emission coefficient provided by IPCC (Intergovernmental Panel on Climate Change), and generator's input-output characteristic coefficients are also used to estimate carbon emission cost as well as the amount of carbon emissions. Case study is conducted on the RBTS IEEE with six buses. For the TOU program, it is assumed that parameters of time period partition consist of three time periods (peak, flat, off-peak time period).

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2006년도 6th International Meeting on Information Display
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• pp.1251-1254
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• 2006

A novel a-Si TFT integrated gate driver circuit using multi-thread driving has been developed. The circuit consists of two independent shift registers alternating between the two mode, "wake" and "sleep". The degradation of the circuit is retarded since the bias stress is removed during the sleep mode. It has been successfully integrated in 14.1-in. XGA LCD Panel, showing enhanced stability.

• Journal of Information Display
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• 제7권3호
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• pp.5-8
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• 2006

A novel a-Si TFT integrated gate driver circuit using multi-thread driving has been developed. The circuit consists of two independent shift registers alternating between the two modes, "wake" and "sleep". The degradation of the circuit is retarded because the bias stress is removed during the sleep mode. It has been successfully integrated in 14.1-in. XGA LCD Panel, showing enhanced stability.

• 한국군사과학기술학회지
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• 제22권5호
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• pp.607-615
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• 2019

In this paper, the electromagnetic effects on the discontinuity structures of the frequency selective radome in manufacturing process based on the X-band were analyzed. In order to fabricate a curved radome using a planar frequency selective surface structure, it is assumed that gaps, slanted gaps, pattern damage, and pattern misalignment between FSS patterns, which are discontinuous elements that can occur at the joint surface of the FSS panel. FSS specimens including continuous elements were fabricated and the frequency transmission characteristics were measured in a free space measurement environment. From the measurement results, resonance frequency shift, transmission performance degradation, and bandwidth variations were found to be the largest when the damaged pattern was bonded to the junction of FSS panels.

• The Journal of Asian Finance, Economics and Business
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• 제8권10호
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• pp.259-267
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• 2021

Both structural transformation and education are the predominant subjects in the literature of development economics. This study examines the relationship between education before the tertiary level and the structural transformation of provinces by using Vietnam as a case study. In this study, education before the tertiary level would be disaggregated into three groups: primary, lower secondary, and upper secondary, then analyzed simultaneously on three-panel data models. Research data is taken from the statistical yearbook of provinces in Vietnam for 2015-2018. Research results show that education before the tertiary level plays a vital role in structural transformation. The enrolment rate of various education levels has a different influence on economic structure, and the lower secondary level has more significant effects than the upper secondary level. This reflects that participating in lower secondary is a fundamental requirement for taking some jobs in the non-agriculture sector, while upper secondary helps to upgrade the learner's abilities to respond to higher requirement jobs. The high rate of repeaters in upper secondary education will slow down the structural shift towards non-agriculture, and changing the traditional attitude about repeaters plays an essential role in improving this rate.

• The Journal of Asian Finance, Economics and Business
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• 제9권3호
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• pp.11-22
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• 2022

The iron and steel sector is caught between two worlds: "carbon reduction" and "development." The goal of this study is to show that optimizing asset structure to boost intangible assets, particularly brand assets, is a viable strategy to achieve low-carbon development. This study uses panel data from 38 A-share companies in China's iron and steel industry from 2010 to 2020, as well as World Brand Lab data, to create a comprehensive impact index of enterprise value from the standpoint of an asset structure optimization, and to test the impact of intangible assets and brand equity on enterprise value. The findings show that: the asset structure of iron and steel enterprises is closely related to enterprise value, implying that iron and steel industry development necessitates a transformation of quantity control and quality improvement; the proportion of intangible assets in the asset structure of iron and steel enterprises plays a positive and critical role in enterprise value under surplus conditions. The iron and steel industry begins to shift from tangible to intangible assets; there is heterogeneity in the iron and steel industry transformation. Given certain technological levels, the share of brand assets contributes significantly to the increase in enterprise value.

• Genomics & Informatics
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• 제16권1호
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• pp.10-13
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• 2018

Until now microsatellite (MS) have been a popular choice of markers for parentage verification. Recently many countries have moved or are in process of moving from MS markers to single nucleotide polymorphism (SNP) markers for parentage testing. FAO-ISAG has also come up with a panel of 200 SNPs to replace the use of MS markers in parentage verification. However, in many countries most of the animals were genotyped by MS markers till now and the sudden shift to SNP markers will render the data of those animals useless. As National Institute of Animal Science in South Korea plans to move from standard ISAG recommended MS markers to SNPs, it faces the dilemma of exclusion of old animals that were genotyped by MS markers. Thus to facilitate this shift from MS to SNPs, such that the existing animals with MS data could still be used for parentage verification, this study was performed. In the current study we performed imputation of MS markers from the SNPs in the 500-kb region of the MS marker on either side. This method will provide an easy option for the labs to combine the data from the old and the current set of animals. It will be a cost efficient replacement of genotyping with the additional markers. We used 1,480 Hanwoo animals with both the MS data and SNP data to impute in the validation animals. We also compared the imputation accuracy between BovineSNP50 and BovineHD BeadChip. In our study the genotype concordance of 40% and 43% was observed in the BovineSNP50 and BovineHD BeadChip respectively.

• 융합보안논문지
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• 제19권3호
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• pp.117-126
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• 2019

역사적으로 국제연합(United Nations)은 해방 이후 대한민국 정부수립을 지원해 주었고, 한국전쟁시 평화유지군을 파병하여 자유민주주의와 평화를 수호하는데 결정적인 역할을 하였다. 유엔의 정치적·군사적 지원을 바탕으로 대한민국은 오늘날 세계 10위의 경제대국으로 성장할 수 있었으며, 이제는 중견국으로서 국제사회의 평화와 번영에 기여하기 위해 책임과 역할을 다해야 할 시점이 되었다. 유엔의 국제평화활동은 분쟁의 예방과 평화조성, 평화강제, 평화유지, 평화건설을 아우르는 포괄적 개념으로 유엔헌장(UN Charter)에 근거하여 안전보장이사회 결의안에 따라 시행된다. 탈냉전 이후 국제 안보환경과 분쟁요인의 변화에 효과적으로 대응하기 위해 유엔은 2000년 브라히미 보고서와 2015년 유엔평화활동에 관한 고위급 패널보고서를 통해 국제평화활동의 패러다임 전환을 추진했다. 따라서 본 연구에서는 아직까지 재건지원과 인도적 지원 등 제한적 수준에서 참여하고 있는 한국군의 국제평화활동을 평가하고 향후 중견국으로서 보다 적극적인 참여를 위한 발전방안을 제시하고자 한다. 이를 위해 유엔 평화유지임무단이 다수 주둔하고 있는 아프리카 대륙을 중심으로 지역분쟁의 역사와 특수성, 탈냉전 이후 변화된 갈등요인, 유엔 평화활동의 새로운 패러다임을 고찰하였고, 향후 한국군이 지향해야 할 국제평화활동 발전방안을 제시하였다.