• 자원환경지질
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• 제27권3호
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• pp.263-279
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• 1994

Paleomagnetic and rock-magnetic data of Cretaceous sedimentary and volcanic rocks from the Euiseong area indicate that the stable components of remanence are carried by single and pseudo-single domain magnetite, with the exception of the Shinyangdong Formation which has been remagnetized. The Hayang Group, except for the remagnetized Shinyangdong Formation, yields the mean characteristic direction of $D/I=22.5^{\circ}/57.2^{\circ}$ (${\alpha}_{95}=4.6^{\circ}$, N=14 sites) and the pole position is $72.0^{\circ}N$, $206.4^{\circ}E$ ($dp/dm=4.9^{\circ}/6.7^{\circ}$). The Yucheon Group shows two polarities and the mean characteristic direction of $D/I=351.2^{\circ}/60.5^{\circ}$ (${\alpha}_{95}=11.2^{\circ}$, N= 19 sites) and the pole position is $81.3^{\circ}N$, $79.0^{\circ}E$ ($dp/dm=13.0^{\circ}/17.0^{\circ}$). The mean directions of both the Hayang and the Yucheon Groups are supported by the McElhinny's fold test at the 99% confidence level and that of the Yucheon Group by a reversal test at the 95% confidence level. A magnetostratigraphic correlation between polarities of the study formations and the Geomagnetic Time Scale indicates that the Hayang Group can be correlated to the Cretaceous Long Normal Superchron (CLNS), and the Yucheon Group to the boundary between the CLNS and the Polarity Chron 33R or later boundaries between normal and reverse polarities. Comparison of the paleopoles from this study with those from the surrounding areas both within the Gyeongsang basin and in the northeastern Asia indicates that the study area was not undergone significant tectonic rotations with respect to the other parts of the Gyeongsang basin and that the Korean Peninsula was the part of the single terrane of the northeastern Asia at least since the CLNS. The Yucheon Group can be divided into four sub-groups based on the paleomagnetic data, suggesting that there were at least four times of volcanic activities in the study area.

• 벤처창업연구
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• 제12권2호
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• pp.87-94
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• 2017

국가연구개발사업으로 도출된 성과의 활용은 국가연구개발 투자 효율성을 제고해 국가경제성장을 견인해야하는 과학기술산업정책의 핵심 과제이다. 우리나라는 다양한 기술이전 사업화지원프로그램을 시행하고 있으나, 성과가 미흡하다. 본 연구는 현행 중소 중견기업 우선제도의 개선방안에 관한 탐색적 연구이다. 현행 중소 중견기업 우선제도는 당초 목적에 부합하여 중소 중견기업의 R&D역량 제고 등 긍정적으로 기여하고 있으므로 원칙적으로 준수하여야 한다. 그러나 동 제도가 형식적으로 운영되지 않도록 동 제도에 전략적 유연성을 부여하는 방향으로 개선할 필요가 있다. 첫째, 기술의 특성상 중소 중견기업이 기술실시계약을 하기에 타당하지 않은 경우에는 예외사항으로서 중소 중견기업 외의 자와 기술실시계약을 할 수 있도록 하는 것이 타당하다. 둘째, 기술수요자 발굴을 위해 "충분한 노력"을 한 경우 본 제도의 의무조건을 이행한 것으로 간주하는 것이 바람직하다. "충분한 노력"은 기술수요자로서 중소 중견기업 발굴을 위해 (1) 기관(기술이전관련) 홈페이지에 12개월 이상 기술공시, 기관자체 기술설명회 개최, 유관기관(전담기관) 합동 기술설명회 개최, 기술 자료집 발간 배포(eDM발송) 중 3가지 이상을 시행한 경우와 (2) 국가기술은행(NTB)에 12개월 이상 기술공시한 경우, (3) 3개 기업이상의 기술수요기업과 협상한 경우 등 상기 세 가지 조건 중 하나 이상의 조건을 만족한 경우이다.

• 한국콘텐츠학회논문지
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• 제6권11호
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• pp.38-44
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• 2006

인터넷의 보급과 함께 엄청나게 성장하고 있는 디지털 콘텐츠 산업은 웹정보콘텐츠 뿐만 아니라 게임, 애니메이션, 디지털 영상, 이러닝 등 다양한 형태로 발전하고 있다. 국가 성장엔진의 하나로서 디지털콘텐츠가 차지하는 비중을 미루어 보건데 사업성을 전제한 관련기술과 핵심요소들의 정확한 개발 방향에 대한 결정이 매우 중요하다. 본 논문에서는 10대 성장동력 산업의 하나인 디지털콘텐츠 세부 분야별 사업 유망성에 대한 평가를 통해 관련분야의 기술개발 및 사업화에 관심을 갖는 산 학 연 주체들의 사업전략에 실질적인 도움을 주고자 했다. 사업 유망성 비교분석의 틀로써 SRIC-BI의 차세대 성장산업과 제품들을 선정하기 위한 7단계의 프로세스 가운데 산업과 사업영역의 평가가 가능하도록 외적요인 평가프로세스를 보정한 BOE 프로세스를 제안하고, 이를 디지털콘텐츠 세부산업 평가에 활용하였다.

• 유통과학연구
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• 제10권8호
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• pp.15-23
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• 2012

This study is an attempt to explore the nature and characteristics of strategic impact of green strategy by environmental capital, corporate reputation, and technology strengths on the firm's performance across countries. The main question addressed in this paper relates to how corporate sustainability, corporate reputation, technology strength, and capabilities influence the firm's economic performance with respect to diverse dimensions of performance measures including sustained growth through the leading firms across countries in the United States, Canada, Europe, and Asia-Pacific countries. Particularly, this study attempts to empirically explore the directions and magnitudes of the operational links between new emerging strategic core competencies (e.g., sustainability green strategy by environmental focus for more sustainable path, corporate reputation by corporate social responsibility and image enhancement, and technology strengths to develop a new product and market) and the firm's economic performance with respect to diverse dimensions of performance such as accounting (ROE and EOA) - and market-based performance (Market value and Tobin's q). Considering all possible limitations that might exist with regard to selected samples and methods, this study demonstrates that environmental sustainability, corporate reputation, technological capabilities and competencies through R&D intensity and patent are most likely to be significantly associated with most market-based performance measures, but the strategic significance of other variables such as capital intensity, leverage, and administrative cost efficiency on performance tends to be different depending on which performance measure is used across different countries with diverse economic and business contexts.

• Structural Engineering and Mechanics
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• 제64권5호
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• pp.591-610
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• 2017

This paper is concerned with the static analysis of variable thickness of two directional functionally graded porous materials (FGPM) circular plate resting on a gradient hybrid foundation (Horvath-Colasanti type) with friction force and subjected to compound mechanical loads (e.g., transverse, in-plane shear traction and concentrated force at the center of the plate).The governing state equations are derived in terms of displacements based on the 3D theory of elasticity, assuming the elastic coefficients of the plate material except the Poisson's ratio varying continuously throughout the thickness and radial directions according to an exponential function. These equations are solved semi-analytically by employing the state space method (SSM) and one-dimensional differential quadrature (DQ) rule to obtain the displacements and stress components of the FGPM plate. The effect of concentrated force at the center of the plate is approximated with the shear force, uniformly distributed over the inner boundary of a FGPM annular plate. In addition to verification study and convergence analysis, numerical results are displayed to show the effect of material heterogeneity indices, foundation stiffness coefficients, foundation gradient indices, loads ratio, thickness to radius ratio, compressibility, porosity and friction coefficient of the foundation on the static behavior of the plate. Finally, the responses of FG and FG porous material circular plates to compound mechanical loads are compared.

• Tribology and Lubricants
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• 제28권6호
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• pp.333-339
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• 2012

Typical magneto-rheological (MR) elastomers consist of silicon-based material. A number of studies have been carried out to evaluate the vibration and tribological characteristics of silicon-based MR e-lastomers. However, these elastomers have quite low strength, so they have low wear resistance. In this study, polyurethane-based MR elastomers with performances better than those of MR elastomers. Experiments have been conducted on different MR elastomers (Pu MR elastomer, Pu-Si MR elastomer, and Pu-wrapped-Si MR elastomer) and different predefined magnetic directions (Non-Direction, Vertical Direction, and Horizontal Directionality) to evaluate the friction and wear performance under a magnetic field. The results show that Pu-wrapped-Si MR elastomer with a horizontal predefined magnetic field has the best performance in terms of wear.

• 한국염색가공학회지
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• 제12권1호
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• pp.1-11
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• 2000

This paper surveys the fabric weavability and machine efficiency in the various weaving looms such as Projectile, Rapiers, and Air-jet. Used projectile loom was Sulzer-PU, and FAST-R, THEMA-11E, and Picanol-GTX were used for Rapier looms, as the Air-Jet looms, Picanol PAT and OMNI types were used. Using these looms, 5 harness worsted satin fabrics were woven for surveying the fabric weavability and machine efficiency. Warp yam count of fabric is 1/40Nm, Sirofil, and filling is 1/30 Nm, worsted. End breaks of warp and filling directions for the various types of looms are measured and discussed with the mechanism of each loom. Warp and filling yam tensions are also measured and analysed with open width of shedding motion of each weaving machine. And various warp yam tensions with open width of shedding are measured and analysed according to the warp yam in various heald frame. These results fire also discussed with temples such as bar and ring. Warp yam tensions at the various positions on the fabric with various looms are measured and discussed with fabric mechanical properties such as tensile, bending, shear and surface.

• 한국지진공학회논문집
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• 제26권6호
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• pp.219-226
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• 2022

The seismic responses of traffic light poles are investigated using a finite element analysis. Among the traffic light poles, single- and bi-directional traffic light poles are considered since such poles are frequently installed on vehicle roads. For a more detailed investigation, three different lengths of the mast arm are considered for each directional pole. For a time-history analysis, six actual and two artificial earthquakes are considered and applied to each direction of the poles (x and y) to investigate which direction input provides more significant responses due to the unsymmetrical structural shape. Herein, the x and y directions are respectively parallel and perpendicular based on the single mast pole case. From the analysis results, the average maximum displacement response is developed with the x-direction input case for both types of light poles. Also, the bi-directional traffic light poles show a 13% larger response than the single-directional traffic light poles. Even though the y-direction input case produces a smaller response, the response difference between the single- and bi-directional light poles considerably increases by about 60%. The average maximum acceleration responses are almost similar for both types of light poles.

• 지질공학
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• 제23권2호
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• pp.127-136
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• 2013

본 연구에서는 확공비트에 대한 향후 연구개발 방향을 설정하기 위하여 전체 굴착비트에 대한 한국, 미국, 일본 및 유럽에서의 출원 공개/등록된 특허를 중심으로 특허 동향을 분석하였다. 굴착비트를 대상으로 1차적으로 굴착기능에 따라 확공구조와 고정구조로 분류하고, 2차적으로 굴착방식에 따라 슬라이딩 구조, 컨센트릭 구조 등 7가지로 분류하였다. 특허 검색 결과 총 33,614개가 검색되었으며 중복제거 및 필터링을 통하여 870건의 유효 분석대상 특허를 선별하였다. 특허건수와 출원인수의 상관관계를 이용한 포트폴리오 분석 결과 성장가능성이 가장 높다고 판단되는 슬라이딩구조를 핵심기술로 선정하였으며 이에 대한 특허장벽 분석을 통하여 핵심기술과 유사성이 높은 특허가 있을 경우 회피설계 및 타기술과 차별화된 기술 개발할 수 있는 기초자료를 제시하였다.

• 한국IT서비스학회지
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• 제12권2호
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• pp.387-410
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• 2013

Due to the development of information technology, Convergence and Creative Economy became hot issues. For example, products become more intelligent and services are likely to be connected and integrated around core services or provided as bundle solution. Meanwhile products and services are integrated in the context of mutual supplementation, which leads to Servitization of Products and Productization of Services in many industries. Previous studies have addressed Convergence with different terms and definitions such as Convergent, Multicategory Multifunctional Product, Clouding Service, Bundle and so on from one perspective such as consumers, suppliers or technology according to a wide range of academic approaches. Thus, this study attempted to suggest the most typical convergence products released in the convergence environment and categorize those products. Furthermore, this study has pointed out the problems in the New Product Development Framework discussed in the studies on marketing by taking the situation of the public sector into account and then suggested "New Service Development Framework in the Public Sector" that are different from traditional e-Gov. approach basically and will enable the government to create public information service and provide them to enterprises or citizens. It also emphasized the importance of Business Conceptualization Stage in the framework; argued that there is a necessity of an integrative study from the perspective of technology on the basis of the approach from the perspective of marketing and Policy such as a study of consumer behaviors, design and marketing channel and Policy Integration for the development and dissipation; and furthermore suggested the cases-the development/Diffusion of Transportation Card Service in Seoul and CFC (Call for Collaboration) in Singapore-in order to verify the framework. There is a need to supplement New Service Development Framework so it is able to reflect the distinct characteristics of the public sector from the academic perspective and be used as practical guidelines for SI (System Integration) business to shift into IT Service business. Last but not the least, this study has suggested the limitations and the directions for the future studies.