• Journal of the Korea Academia-Industrial cooperation Society
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• v.9 no.4
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• pp.1086-1094
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• 2008

Today's small and medium-sized enterprises in technology development for future industrial growth engine. In addition evaluation of the technological competitiveness of companies and countries for R&D investment as a significant item evaluated constantly expanding, he said. However, R&D productivity to properly measure and assess the companies rarely. This paper examines the existing technology, technology assessment, the study's limitations, the small and medium-sized companies to complement the U-IT TE and PSMP Model suggested by the design environment, and technology-related companies in the technology, the ability to comprehensively assess and as a tool to leverage, technical analysis and quantitative evaluation and production from the completion of the Process Model, presented want to formalize.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2011.05a
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• pp.362-364
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• 2011

To build ubiquitous agriculture environment successfully, development of core technology for agriculture, such as sensor node H/W, sensor node middleware platform, routing protocol and agricultural environment application service is essential. With the application of u-IT technologies to traditional agriculture area, fusion complex technologies become a source to raise value-added agriculture product and its productivity. However, it is imperative to expand horticulture industry area and improve infrastructure for utility-based horticulture. This paper proposes an agriculture product growth environment management system that utilizes environmental factor monitoring sensors and biological information sensors in greenhouse to specifically manage botany growth environment management.

• The Korean Journal of Air & Space Law and Policy
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• v.32 no.1
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• pp.139-175
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• 2017

The Assembly plenary session on December 3, 2017 passed a Product Liability Amendment bill that introduced clauses concerning consumer burden of proof and punitive damage reimbursement. More specifically, these newly approved provisions will reduce the burden of proof placed on consumers and levy triple punitive damage on suppliers. Significant increases in the number of product-liability lawsuit and the number of related insurance contracts are expected. Since military aircraft are designed for operational purpose(seeking greater combat effectiveness over greater safety) and used in high-risk environment, it is practically impossible to obtain an affordable product-liability insurance, Without having any backup plan, military aircraft manufacturers directly face all sort of liability risks under Product Liability Act, Warrant Liability Act and Non-Performance of Contract Act. The U.S. experienced similar problems when they first implemented their product-liability law in 1970s. There had been a big dispute among legal practitioner, insurance professionals and scholars concerning military aircraft manufacturer's liability. In order to settle the issue, the U.S. Supreme Court has established a new precedent of Government Contractor Defense(GCD). The U.S. government also included an indemnity clause for military aircraft manufacturers in their FMS Contract with the Korean government. Likewise, Korean military aircraft manufacturers should 1) clearly understand their current position that they cannot afford expensive product-liability insurance and the cost is not accounted in the military procurement calculation, 2) estimate potential liability risks with the ongoing overseas export expansion in mind, 3) set up appropriate risk management measures through regulatory reform and policy development.

• The Journal of Engineering Geology
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• v.28 no.4
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• pp.593-603
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• 2018

The most of groundwater with high U-concentration occur in the Jurassic granite of Gyeonggi massif and Ogcheon belt, and some of them occur in the Cretaceous granite of Ogcheon belt. On the contrary, they do not occur in the Jurassic granite of Yeongnam massif and the Cretaceou granite of Gyeongsang basin. The Jurassic and Cretacous granite, the host rock of high U-groundwater, were resulted from parental magma with high ratio of crustal material and highly differentiated product of fractional crystalization. These petrogenetic characteristics explain the geological evidence for preferential distribution of uraniferous groundwater in each host rock. It were reported recently that high U-content, low Th/U ratio and soluble mineral occurrence of uraninite in the two-mica granite of Daejeon area which have characteristics of S-type peraluminous and highly differntiated product. It is the mineralogical-geochemical evidences supporting the fact that the two-mica granite is the effective source of uranium in groundwater. The biotite granite and two-mica granite of Jurassic age were reported as biotite granite in many geological map even though two-mica granite occur locally. This fact suggest that the influence of two-mica granite can not be ignored in uraniferous groundwater hosted by biotite granite.

• Journal of applied mathematics & informatics
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• v.5 no.1
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• pp.223-233
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• 1998

This paper is concerned with the problem of existence of solutions to the initial value problem u'(t) = A(t, u(t)), u(a) = z in a probabilistic normed space where $A : [a,b)\;{\times}\;D->E$ is continuous, D is a closed subset of a probabilistic normed space E, and $z\;{\in}\;D$. With a dissipative type condition on A, we estabilish sufficient conditions for this initial value problem to have a solution.

• Proceedings of the KAIS Fall Conference
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• 2008.05a
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• pp.333-335
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• 2008

본 논문에서는 기존의 기술가치평가, 기술 평가의 연구의 한계점을 보완하는 중소기업 대상의 U-IT TE 및 PSMP 설계 Model을 제시하여 기술 환경 및 기업의 기술 관련 능력을 종합적으로 평가하는 도구로 활용하고, 기술을 정량적으로 분석 평가하고 제품 생산 완료까지의 Process를 정형화하는 Model을 제시하고자 한다.

• Korean Journal of Soil Science and Fertilizer
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• v.24 no.1
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• pp.50-54
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• 1991

This study was conducted to evaluate the effect of five newly developed slow-release compound fertilizer varying urea/formaldehyde mole ratios on chinese cabbage against the checked plot of straight fertilizer. The chinese cabbage was obtained the highest yield in the product V which was 1.0 mole ratio of urea/formaldehyde adding with 6.7% urea resin, however, it was lowest in the product VII which the lowest mole ratio of urea/formaldehyde and the highest amount of the resin added. The appropriate product with one basal application for chinese cabbage should be one with 76.1 % of T-N dissolution in water after 24hrs and 71.7 % of T-N dissolution in soil 100 days after treatment. The total nitrogen content of the harvest plant in the product plot was lower compared to the checked plot of N P K and the available soil phosphrous after harvest was higher than that of the checked.

• Bulletin of the Korean Mathematical Society
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• v.53 no.4
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• pp.1157-1169
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• 2016

We find the distributional solutions of the Wilson's functional equations $$u{\circ}T+u{\circ}T^{\sigma}-2u{\otimes}v=0,\\u{\circ}T+u{\circ}T^{\sigma}-2v{\otimes}u=0,$$ where $u,v{\in}{\mathcal{D}}^{\prime}({\mathbb{R}}^n)$, the space of Schwartz distributions, T(x, y) = x + y, $T^{\sigma}(x,y)=x+{\sigma}y$, $x,y{\in}{\mathbb{R}}^n$, ${\sigma}$ an involution, and ${\circ}$, ${\otimes}$ are pullback and tensor product of distributions, respectively. As a consequence, we solve the $Erd{\ddot{o}}s$' problem for the Wilson's functional equations in the class of locally integrable functions. We also consider the Ulam-Hyers stability of the classical Wilson's functional equations $$f(x+y)+f(x+{\sigma}y)=2f(x)g(y),\\f(x+y)+f(x+{\sigma}y)=2g(x)f(y)$$ in the class of Lebesgue measurable functions.

• Journal of the Korean Society of Safety
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• v.28 no.2
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• pp.26-30
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• 2013

The purpose of this study is to find risk factors by analyzing the operation principle of a photo coupler (P/C) used to remove the noise of electronic devices and establish a base for the performance improvement of developed products. It was found from the P/C circuit analysis of normal products that they were equipped with an electrolytic condenser of $0.1{\mu}F$ to smooth system signals. Due to the epoxy resin packing the external part of the P/C, this study experienced a limit to visually examine the damage to it. It could be seen from the analysis of electric characteristics of the P/C that the forward voltage ($V_f$) and reverse current ($I_r$) were 1.3 V and 10 uA, respectively. In addition, it is required that the breakdown voltage (VCE) between the collector (C) and emitter (E) be maintained at less than 35 V. The and of the damaged product #1 were comparatively good. However, the measurement of was 100.0 uA. From this, it is thought that a short circuit occurred to the internal circuit. Moreover, from the fact that the of the damaged product #2 was open circuit and the measurement of was 0.0 uA, it is thought that the collector and emitter was separated or insulation resistance was significantly high. Furthermore, from the fact that the of the damaged product #3 was open circuit and the measurement of was 0.0 uA, it is thought that the space between the collector (C) and emitter (E) failed to meet the design standard or that they were separated. Therefore, it is thought that fabricating the P/C by increasing the reverse current 10 mA to 50 mA will prevent its malfunction.

• Proceedings of the Korean Reliability Society Conference
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• 2001.06a
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• pp.389-393
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• 2001