• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.21 no.11
• /
• pp.102-108
• /
• 2020

This study was conducted to investigate the genetic diversity and genetic taxonomic relationships between Korean native black goat (KNBG) populations and crossbred goats. The 45,658 common single nucleotide polymorphisms present in the KNBG strain and crossbred goat were used for the analysis. The expected and observed heterozygosity (which can be indicators of genetic diversity) were in the order of crossbred, Gyeongsang National University, Jangsu, then the Tongyeong strains. The variance component represents the degree of genetic diversity between groups. The highest variance (19.98 %) was between the Dangjin and Gyeongsang National University strains. The lowest variance (8.87 %) was between the Jangsu and Tongyeong strains. In addition, the genetic distance between the populations showed that Jangsu and Tongyeong formed one branch (they were very similar genetically). The Dangjin and the Gyeongsang National University strains appeared to form a second branch. Furthermore, the crossbred formed one branch with the Dangjin and the Gyeongsang National University strains. Therefore, the results of this study can be used as basic data to reduce unnecessary inbreeding and genetic resource flow between the KNBG populations. The basic data indicates the uniqueness of the genetic resources of the domestic lineage. These findings provide a basis for differentiating KNBG and Crossbred goats to use to improve the desirable characteristics of this species.

• Journal of the Microelectronics and Packaging Society
• /
• v.25 no.2
• /
• pp.31-34
• /
• 2018

In this study, the feasibility of ZnO/Al/ZnO flexible transparent electrodes for future flexible optoelectronic devices was investigated. All depositions were performed on PET substrates. The thicknesses of the top and bottom ZnO layers were 5-70 nm and 2.5-20 nm, respectively. The highest visible light transmittance was recorded when the thicknesses of the top and bottom ZnO layers 30 nm and 2.5 nm, respectively. 62% optical transmittance (at the wavelength of 400 nm) and sheet resistance of $19{\Omega}/{\Box}$ were measured. After repetitive bending test at a curvature radius of 5 mm, the transmittance and sheet resistance did not change.

• Economic and Environmental Geology
• /
• v.41 no.5
• /
• pp.551-562
• /
• 2008

Option pricing model in finance has been applied to price non-financial options, called real options. The real option valuation method is ideally suited to irreversible decision making under uncertainty, including the need to determine the optimal time to act and even change between alternative courses of action as information is collected. Therefore, the real option valuation method is expected to provide a superior and less subjective approach to determining optimal strategies for water resources supply projects, which have been reported to have huge risks due to uncertainties, and investors and policy makers need to build an optimal strategy - when and if to invest - with uncertainties and managerial flexibilities considered.

• KDI Journal of Economic Policy
• /
• v.19 no.3
• /
• pp.75-138
• /
• 1997

해외투자로 인해 수출 및 고용이 감소할 것이라는 우려가 있다. 본고는 이론적, 통계적, 실증적 분석을 통하여 이에 관한 논의를 하고 향후 전망과 함께 정책적 시사점을 도출하는 것을 목적으로 한다. 본고의 분석결과 및 투자제도 개선방향을 요약하면 다음과 같다. 해외투자가 아직까지 수출을 대체하였다는 근거는 없다. 향후 국내부품업체의 현지동반진출 확대, 해외자회사의 역할 증대, 국제분업생산체제의 진전 등 해외투자전략의 변화에 따라 해외투자가 수출을 대체할 가능성을 배제할 수 없으나 해외투자의 제한시에는 수출 및 고용에 더욱 악영향을 줄 수 있다. 해외투자를 제한하는 것은 예상되는 실업을 단지 연기시키는 것에 불과하며, 오히려 향후 실업문제가 훨씬 심각해질 수 있다. 해외투자는 기업의 경쟁력 유지 및 구조조정을 위해서는 타대안보다 고용안정에 기여할 수 있다. 또한 과도한 해외투자가 기업 및 국내경제에 미칠 악영향을 우려하여 해외투자를 규제하는 것도 설득력이 약하다. 정부가 해외투자의 과도성 여부를 판달할 능력이 기업보다 우월하다고 할 수 없다. 설령 해외투자 결정이 비합리적으로 이루어질 가능성이 있다 하더라도, 이 문제는 투자기업 및 여신은행 등의 책임을 분명히 하여 기업은 투자성과의 책임을 지고, 여신은행, 채권자 등은 투자기업의 재무현황 및 투자계획의 성공가능성을 고려하여 자금제공을 하도록 유도해야 한다. 따라서 일부 대규모 해외투자에 대한 사전심의로 대표되는 현행규제는 철폐되어야 한다. 일부 대규모 해외투자의 적정성 여부를 판단하기 위해 운용되고 있는 해외투자 심의는 실효성이 없을 뿐만 아니라 신속한 해외투자결정을 방해할 수 있다. 중장기적인 관점에서 해외투자로 인한 국제분업을 국내고용 및 수출의 증가뿐만 아니라 경제성장으로 연결시키기 위해서는 국내의 입지여건을 혁신활동 및 고부가가치 활동에 적합하도록 개선해 나갈 필요가 있다. 한편 단기적 고용감소에 대비한 정책도 필요한데, 고육훈련제도의 개선, 노동시장의 유연성 제고, 고용서비스 개선은 이런 마찰을 완화하는데 기여할 것이다.

• Plant Journal
• /
• v.8 no.3
• /
• pp.42-48
• /
• 2012

Under traditional analysis of the capital budgeting, NPV, it is assumed that management cannot react to deviation from the expected scenario of cash flow at the time of evaluation. In practice, however, it is less likely that the expected scenario will come true when new information arrives and uncertainty is resolved. Uncertainty and risk can be influenced through 'managerial flexibility', which becomes a central instrument for value creation. Real option framework including option to defer, option for staged investment, option to alter, option to abandon, option to switch, etc. takes this managerial flexibility into account. Therefore, it is more appropriate to use real option method to evaluate the project than the traditional DCF(discounted cash flow) tool if the firm has high volatility of the expected returns.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2004.05a
• /
• pp.265-268
• /
• 2004

최근 사회의 다양성과 기업환경의 변화, 정보기술(IT)의 발달로 조직운영의 생산성 및 효율성 제고와 대고객 서비스 수준향상을 위해 업무처리를 자동화 시키고자 하는데 많은 관심을 가지게 되었다. 현재는 누가 무슨일을 하고 있는지 파악이 어렵고, 조직에 의해 정의된 룰과 시스템에 따르기 보다는 개인의 주관과 판단에 따른 업무 수행이 되고, 무엇보다 변화하는 시장환경에 유연하게 대응하는데 어려움이 많다. BPM(Business Process Management)은 조직내의 사람과 시스템, 어플리케이션을 통합하는 개념으로서 워크플로우와 응용프로그램통합기술(EAI)이 결합된 시스템으로 업무의 자동화는 물론 모니터링, 평가등을 통하여 획기적으로 ROI를 개선해 주며 적용을 위해서는 프로세스와 시스템을 아우러는 컨설팅과 구현이 따른다. 그러나 BPM의 개념적 만족은 하지만 초기단계로서 적용사례가 부족하여, 적용하기 위한 의사결정은 쉽지 않다. 본 논문은 BPM의 개념파악과 BPR, 워크플로우와 BPM의 차이점을 비교분석 하고, 대규모 대량의 트랜잭션과 수천명의 사용자 및 다수의 비즈니스 어플리케이션이 관여하는 금융여신 프로세스에 BPM을 적용하는 사례를 제시하고자 한다.

• Proceedings of the KIPE Conference
• /
• 2018.07a
• /
• pp.472-473
• /
• 2018

최근 무분별한 화석 연료 사용으로 인한 환경 문제가 대두되면서, 대체 에너지에 관한 연구가 활발히 이루어지고 있다. 본 논문에서는 고효율, 저소음, 연료의 유연성 및 친환경 등 높은 장래성을 함축하고 있는 연료 전지를 채택하였다. 하지만 일반적인 연료 전지는 24~48[V]의 낮은 출력 전압 특성을 가지고 있어, 수용가 측에서 요구하는 전압 레벨로 승압하기 위해 Boost Converter를 필요로 한다. 하지만 기존 Boost Converter 방식의 경우 고 승압에 있어 많은 어려움이 따른다. 본 논문에서는 문제의 해결 방안으로 두 대의 Boost Converter를 직렬 연결한 2-Stage 방식을 채택하여 고 승압을 이루었다. 또한 최적 효율이 되기 위한 전압 값을 도출하여, 효율적인 시스템 운영이 가능하였으며, PSIM Simulation을 통하여 검증하였다.

• Korean Journal of School Psychology
• /
• v.17 no.1
• /
• pp.109-123
• /
• 2020

The purpose of this study was to understand path of internal narcissism toward SNS addiction tendency of middle school students. The study intended to test the hypothesis that internal narcissism personality would lead to the SNS addiction tendency through interpersonal problems and that the internal narcissism effect on the interpersonal problems can depend on Gender difference The subjects of the study were 240 middle school students (95 male and 145 female students) in Gwangju area. The descriptive statistics, correlation analysis, and SPSS Macro PROCESS Model were used. The results of the study are as follows. First, there was a significant positive interpersonal problems mediation efffect between inner narcissism and SNS addiction tendency of middle school students. Second, as a result of examining Gender difference moderatiing effect between internal narcissism, and interpersonal problems relationship. according to gender difference statistically significant. Third, Moderated mediation effect of gender difference and interpersonal problems between internal narcissism personality and SNS addiction tendency relationship is statistically significant. Recently, social networking has become a serious problem in our society and it shows the highest rate of addiction in early middle school students. The purpose of this study was to investigate the effects of psychological factors of inner narcissism and interpersonal problems on the SNS addiction tendency, focusing on the gender differences in middle school students, and to provide basic data to prevent adolescent SNS addiction problems have.

• Journal of the Korean Crystal Growth and Crystal Technology
• /
• v.29 no.3
• /
• pp.123-131
• /
• 2019

In this study, the development of transparent UV blocking material using $TiO_{2-x}$ oxide thin film process was developed. A process technology is related to a process technology for making a sample with ultraviolet-shielding property of visible light transmittance of 78 % or more (total light transmittance at 550 nm) and of a UV cut-off characteristic of more than 95 % at 315 nm in ultraviolet wavelength band. In this study, it is possible to establish a flexible device process condition of high performance ultraviolet (UV) shielding thin film, to design mixed type of transparent flexible device with heterogeneous characteristics and to formulate composite deposition technology, according to various market demands. Establishment of actual roll-to-roll continuous process and equipment and process technology will affect related industries greatly.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.24 no.12
• /
• pp.1688-1696
• /
• 2020

The paradigm of Internet-of-things(IoT) systems is changing from a cloud-based system to an edge-based system to solve delays caused by network congestion, server overload and security issues due to data transmission. However, edge-based IoT systems have fatal weaknesses such as lack of performance and flexibility due to various limitations. To improve performance, application-specific hardware can be implemented in the edge device, but performance cannot be improved except for specific applications due to a fixed function. This paper introduces a edge-centric metamorphic IoT(mIoT) platform that can use a variety of hardware through on-demand partial reconfiguration despite the limited hardware resources of the edge device, so we can increase the performance and flexibility of the edge device. According to the experimental results, the edge-centric mIoT platform that executes the reconfiguration algorithm at the edge was able to reduce the number of server accesses by up to 82.2% compared to previous studies in which the reconfiguration algorithm was executed on the server.