• 한국재난정보학회 논문집
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• 제3권2호
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• pp.147-169
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• 2007

This study investigates the reinforcing effects of the Multi-bar Spring nails with respect to the conventional Soil-nails in artificial slopes. Based on wide experience related to design and construction, soil nails have been widely applied to reinforce slope in the world. Multi-bar spring nails are one of the improved soil nailing methods. These method maximizes bending, shearing, pull-out resistance for those multi-nails, not unit nail, that are inserted in the borehole using special spacer at regular intervals. In addition, because cutting plane is confined effect resulting from a pressured plate at the end of the nails with compression spring equipment, slope stability is secured using MS-nailing method. Analyzing bending, pull-out, shearing condition of MS-nail, it was examined throughly elastic region, load transfer capacity, reinforcing effect on cutting plate of MS-nails. In addition, Pilot and laboratory tests, numerical analysis were carried out to verify the superiority of MS-nailing method. In case, MS nailing method is applied to reinforce artificial slope, it was analyzed that bending, pull-out, shearing resistance was increased more than existing nailing method was applied. In this study, it was shown that surface failure was more or less prevented using MS-nailing method, confining effect on cutting plane using spring stuck to flexible equipment.

• Human Ecology Research
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• 제57권3호
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• pp.341-352
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• 2019

This study examined the effect of maternal positive parenting attitudes on school adjustment among multi-cultural adolescents in Korea and investigated if multi-cultural adolescents' ego-resiliency mediates the relationship between maternal positive parenting attitudes and school adjustment. We used panel data from the fifth wave (2015) of the Multicultural Adolescents Panel Study (MAPS) collected by the National Youth Policy Institute. Participants were 1,297 multi-cultural adolescents (639 boys, 658 girls) who are second-year middle school students and have foreign mothers. SPSS 25.0 performed descriptive statistical analysis and correlation analysis. The structural equation model (SEM) was estimated with Mplus 5.12. The results of this study were as follows. First, a higher level of maternal positive parenting attitudes were related to higher level of ego-resiliency and school adjustment for multi-cultural adolescents. Second, maternal positive parenting attitudes had an indirect effect on school adjustment for multi-cultural adolescents via ego-resiliency. The results of this study indicate that maternal positive parenting behaviors would help improve the school adjustment of multi-cultural adolescents by increasing the level of ego-resiliency. In addition, the results of this study suggest that improving ego-resiliency for multi-cultural adolescents can be an effective method to help in school adjustment, as well as education for maternal parenting attitude.

• 말소리와 음성과학
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• 제4권2호
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• pp.121-126
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• 2012

This study deals with how stuttering changes in its frequency in a situation where adult participants who stutter are exposed to one type of background noise, that is, multi-talker babble noise. Eight American English-speaking adults who stutter participated in this study. Each of the subjects read aloud sentences under each of three speaking conditions (i.e., typical solo reading (TSR), typical choral reading (TCR), and multi-talker babble noise reading (BNR)). Speech fluency was computed based on a percentage of syllables stuttered (%SS) and speaking rate was also assessed to examine if there was significant change in rates as a measure of vocal change under each of the speaking conditions. The study found that participants read more fluently both during BNR and during TCR than during TSR. The study also found that participants did not show significant changes in speaking rate across the three speaking conditions. Some discussion was provided in relation to the effect of multi-talker babble noise on the frequency of stuttering and its further speculation.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1997년도 하계학술대회 논문집 C
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• pp.1286-1288
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• 1997

In this study, partially-depleted SOI MOSFET with multi-gate was fabricated on p-type SIMOX(Seperation by Implanted Oxygen). As increase the number of its gate, increase the breakdown voltage. But kink effect was not affected by the number of its gate. However, it is known that the asymmetric gate structure reduce kink effect. So if asymmetric multi-gate applied to partially-depleted SOI MOSFET, it is expected that the breakdown voltage of SOI MOSET with asymmetric multi-gate is higher than that of SOI MOSFET with single gate and that kink effect is reduced by SOI MOSFET with asymmetric multi-gate.

• 한국전기전자재료학회논문지
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• 제18권10호
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• pp.950-955
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• 2005

For the insulation design of a high temperature superconducting(HTS) cable, three kinds of design method were proposed, which used AC and impulse withstand voltage and partial discharge inception strength. However, the designed insulation thickness by AC and impulse could not be applied to cable fabrication process due to much low electrical breakdown strength. The effect of the multi-layered insulation paper was not considered on the previous insulation design and the insulation thickness by partial discharge inception strength could be applied only. In this paper, the electrical breakdown characteristic, which considered the effect of multi-layered of LPP, was investigated to design the insulation thickness.

• 한국군사과학기술학회지
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• 제12권5호
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• pp.557-562
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• 2009

Weapon system currently considers the research about effect analysis including cost effectiveness methodology for a budget management and an achievement of the military strategy goal. So that, this study considers the theoretical background, strength and weakness of several Multi-Criteria Decision Making, and an effect analysis of weapon system. And AHP(Analytic Hierarchy Process) is selected for the best effect analysis methodology of weapon system. Therefore, we applied AHP to the case study of the new generation Multiple Launcher Rocket System, performing the analysis of cost effectiveness methodology. Using AHP and cost effectiveness methodology, we propose the actual and proper decision making result.

• Structural Engineering and Mechanics
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• 제15권1호
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• pp.71-81
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• 2003

The governing differential equation for buckling of a one-step bar with the effect of shear deformation is established and its exact solution is obtained. Then, the exact solution is used to derive the eigenvalue equation of a multi-step bar. The new exact approach combining the transfer matrix method and the closed form solution of one step bar is presented. The proposed methods is convenient for solving the entire and partial buckling of one-step and multi-step bars with various end conditions, with or without shear deformation effect, subjected to concentrated axial loads. A numerical example is given explaining the proposed procedure and investigating the effect of shear deformation on the critical buckling force of a multi-step bar.

• 대한기계학회논문집A
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• 제30권2호
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• pp.128-134
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• 2006

Topology optimization is an effective scheme to obtain the initial design concept: however, it is hard to apply in case of non-linear or multi-objective problems. In this study, a modified topology optimization method is proposed to generate a structure of a swing arm type actuator satisfying maximum compliance as well. as maximum stiffness using the multi-objective optimization. approach. The multi-objective function is defined to maximize the compliance in the direction of focusing of the actuator and the second eigen-frequency of the structure. The design of experiments are performed and the response surface functions are formulated to construct the multi-objective function. The weighting factors between conflicting functions are determined by the back-error propagation neural network and the solution of multi-objective function is acquired using the genetic algorithm.

• 디지털콘텐츠학회 논문지
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• 제9권4호
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• pp.551-560
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• 2008

디지털 영상콘텐츠 분야에서의 원소스 멀티유스(One-Source Multi-Use) 전략은 하나의 소재(onesource)로 다양한 상품(multi-use)을 개발, 배급할 경우 시장에서의 시너지효과가 크다는 판단에 의해 서로 다른 장르에 적용하여 파급효과를 노리는 마케팅관점에서 중시된 이론으로 알려져 있다. 최근 문화산업재의 온라인화 및 디지털 콘텐츠화가 급진전되고 각 장르간 경계가 모호해지고 매체간 이동이 용이해짐에 따라 이 전략은 창구효과(Window Effect)가 큰 문화산업의 특성에 맞추어 기획 단계부터 영화 게임 애니메이션 캐릭터 등을 총 망라하는 문화 콘텐츠를 개발뿐만 아니라 플랫폼 재활용측면에서 소프트웨어엔지니어링 분야까지 확장되고 있는 추세이다. 특히 하나의 인기 소재만 있으면 추가적 비용부담을 최소화하면서 다른 상품으로 전환해 높은 부가가치를 얻을 수 있다는 점에서 각광받고 있으며, 관련 상품과 매체를 체계적으로 관리할 수 있어 마케팅 및 홍보 플랫폼 제작 등에서 제작비용 절감효과를 누릴 수 있다는 장점이 있다. 이러한 관점에서 본 연구는 세계적으로 영상콘텐츠산업 비중이 높은 한 미 일 3국의 제작방식의 비교를 통하여 각국이 선호하는 장르 및 제작방식을 고찰하고자 한다.

• 지역연구
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• 제35권1호
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• pp.19-31
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• 2019

본 연구의 목적은 국민정체성과 위협의식이 다문화 수용성에 미치는 영향과 접촉이론이 실제로 작동하는지를 분석하는 것이다. 분석을 위해 '2013년 한국종합사회조사' 자료를 이용하였으며, 구조방정식 모형을 활용하여 외국인 밀집지역 거주 여부에 따른 비교분석을 실시하였다. 분석 결과, 국민정체성은 다문화수용성에 직접적인 영향을 미치지 않으며, 위협의식이 국민정체성과 다문화수용성 간 관계에서 사이에서 완전한 매개효과를 갖는 것으로 나타났다. 또한, 다문화수용성에 대한 위협의식의 부정적인 효과는 외국인 밀집지역에 거주하는 집단에서 더 큰 것으로 나타났다. 분석 결과를 통해 본 연구는 외국인에 대한 위협의식을 줄이기 위한 다문화 인식교육이 필요하며, 외국인과 한국인 간 접촉으로 인해 발생하는 갈등을 예방하고 조정하는 지역사회 및 공동체 차원의 프로그램이 필요하다는 정책적 시사점을 제시한다.