• 한국컴퓨터정보학회논문지
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• 제5권3호
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• pp.215-219
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• 2000

The purpose of this paper is to propose a method to maximize the efficiency of a content-based image retrieval for various kinds of images. This paper discuss the self-adaptivity for the change of image domain and the self-selection of optimal features for query image, and present the efficient method to maximize content-based retrieval for various kinds of images. In this method, a content-based retrieval system is adopted to select automatically distinctive feature patterns which have a maximum efficiency of image retrieval in various kinds of images. Experimental results show that the Proposed method is improved 3% than the method using individual features.

• Journal of information and communication convergence engineering
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• 제4권4호
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• pp.162-165
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• 2006

This paper presents a bandwidth efficient self-cancellation scheme for interchannel interference (ICI) in OFDM transmission systems. Conventional self-cancellation schemes provide an excellent cancellation capability of ICI for relatively low frequency offsets. However, this capability is achieved at the expense of bandwidth efficiency and thus a higher modulation level is often used to compensate for desired throughput. By applying a partial differential coding (PDC) to the transmit data prior to the ICI self-cancellation, bandwidth efficiency is greatly improved by a factor of 2, while maintaining a string of data (+1, -1) alternately for the ICI. self-cancellation in OFDM systems. Computer simulations show that the performance of the proposed scheme is comparable to the conventional self-cancellation scheme with slight performance degradation for relatively lower frequency offsets.

• 한국의상디자인학회지
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• 제16권1호
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• pp.153-167
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• 2014

The purpose of this study is to compare and analyze about the Telecasters's appearance management, external image & awareness on Self-Efficacy. The method of this study is carried out form 2 January 2013 until 20 January. with the 164 telecasters who announcers, voice actors, gag men, singers. The results of the research is summarized below: First, Among the telecasters, singer is the highest awareness of the beauty services importance about the fashion, makeup, hair, skin care, cosmetic surgery. Especially, about the awareness of the beauty services importance about the fashion, makeup, hair, singers> announcers> voice actors> gagmen appear one after another. Second, about the importance awareness of the beauty services importance & the relation of self-efficacy, for announcers, the more higher awareness the fashion, makeup, hair, the higher self-efficacy of the confidence, effective expression, etc.. For voice actors, the more higher awareness the hair, skin care, the fashion, make up, cosmetic surgery, the higher self-efficacy of the new image making, the confidence, task efficiency improvement, etc... For gagmen, the more higher awareness the fashion, hair, skin care, makeup, cosmetic surgery, the higher self-efficacy of the self-expression, the confidence, the new image making, task efficiency improvement, etc.. For singer, the more higher awareness the makeup, hair, cosmetic surgery, skin care, fashion, the higher self-efficacy of the task efficiency improvement, the self-expression, the confidence, the new image making, etc.. Third, about the importance awareness of the appearance management behavior, external image, about the importance awareness of the appearance management behavior, singer is the most higher awareness, announcers> voice actors> gagmen appear one after another. about the importance awareness of the external image, singer is the most higher awareness, voice actor> announcers> gagmen appear after another. The meanings of this study provide the telecasters's image's fields with the effective basic data.

• 상하수도학회지
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• 제24권3호
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• pp.277-285
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• 2010

We examined the optimal shape of blades and efficiency of a self-power generator when the self-power generator using flow of the water in pipe as the power source was installed. Selected factors were the shape of blades, the number of blades, pitch angle, and the existence of separator. GAMBIT2.4 was used as a modeling program, FLUENT6.3, which is computational fluid dynamics simulation program, was used as an analytical model. In the case of a viscous model, k-epsilon standard model was chosen. As a result, when the number of blades was increased, the efficiency and maximum moment were enhanced slightly. The pitch of blades went up, and maximum moment was also increased. The optimal pitch of blade was 62.5 degree and the efficiency was increased by 30%. The efficiency was also increased when a separator was installed.

• 보건행정학회지
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• 제4권1호
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• pp.77-106
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• 1994

This study attempts to evaluate the beneficial equity and operational efficiency of the three Korean medical insurance programmes and thereby suggest directions for their policy improvement. Concepts of the equity and effciency were reviewed to develop indicators for comparative analysis. For the analysis, statistical and financial accounting data for 1991, issued by the National Federation of Medical Insurance and the Korea Medical Insurance Corporation, on the operational status and performances of the programmes, were collected and rearranged to be suited to the purpose of the study. The analysis reveals that beneficial inequity exists between self-employed and employee programs. and that operational inefficiency is prominent in both programms for self-employeds and for Government employees and private school teachers. In order to improve the beneficial inequity of the self-employed program, it is suggested that policies be formulated and implimented toward increasing the program revenue through increasing subsidies from the Government, and through inter- program finance adiustment. For the operational inefficiency of the two programs, it is judged that, toghether with the administrative support and control from the Government and the insurance society bodies, self- efforts be initiated to improve the internal mangement styles and systems of the insurance societies. Finally, from the viewpoint of the structural efficiency, expansion of the preventive insurance benefits by the insurance soceties is recommended both for beneficial equity and operational efficiency.

• 한국학교보건학회지
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• 제13권2호
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• pp.241-259
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• 2000

The purpose of this study is to inquire into the degree of health promotion activity of boys' high school students, and to find out the relationship between self-efficiency and health promotion behavior in order to offer basic data for developing an educational method or program for health promotion. The content validity of the instrument was authenticated by a professor of the science of nursing, and reliability is proved to be 'cronbach' a 'after mortifying content through a pre-test on 37 students. The collected 452 persons' data is analyzed in terms of average, percentage, t-test, ANOVA, Pearson' s Correlation Coefficient. and Multiple Stepwise Regression by 'SAS 6.12'. The analyzed data is the following; 1. The higher self-efficiency, among cognitive-perceptual factors, has a beneficial effect on health promotion behavior(r=.0687, p=.0001). 2. The acting degree of health promoting behavior appeares to be middled at 3.39 points out of 6. 3. The degree of self-efficiency appears at 6.04 points out of 10. 4. The difference in health promoting behavior according to a subject's general factors is the following health concern of parents (p=0.01), higher health concern of parents, makes health promoting behavior higher. 5. The difference of self-efficiency according to subject's general factors is affected by the health concerns of parents(p=0.0044) and between groups(p=0.0001).

• 한국컴퓨터정보학회논문지
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• 제24권11호
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• pp.263-270
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• 2019

본 연구는 언어재활사의 직무만족도에 영향을 미치는 요인을 파악하여 이를 중재하기 위한 프로그램 개발에 기초자료를 제공하기 위한 조사연구이다. 언어재활사 145명을 대상으로 구조화된 설문지를 이용하였다. 연구 결과 직무만족도의 평균 3.62점이었고, 직무만족도는 자기효능감과는 양의 상관관계, 직무스트레스와는 음의 상관관계에 있었다. 직무만족도에 영향을 미치는 요인은 자기효능감과 직무스트레스로 나타났고, 직무만족도의 설명력은 46.8%로 나타났다. 본 연구 결과가 언어재활사의 직무만족도를 놀일 수 있는 방안을 모색하고 이에 대한 중재프로그램을 개발하는데 기초적 자료로 유용하게 활용 될 것으로 기대된다.

• 문화기술의 융합
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• 제7권1호
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• pp.309-316
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• 2021

본 연구의 목적은 지역사회경험학습(CBL)이 전문대학생의 진로결정 자기효능감에 미치는 효과를 검증하고 의미를 탐색하는 것이다. 본 연구는 부산광역시 D대학교 교수학습개발센터가 지원한 CBL에 참여한 10개 학과, 68명의 학생을 대상으로 진행되었다. 본 연구의 연구문제는 첫째, CBL이 전문대학생의 진로결정 자기효능감에 영향을 미치는가? 둘째, CBL이 전문대학생의 진로결정에 주는 의미는 무엇인가?이다. CBL의 적용 전·후 설문조사를 실시하여 효과성을 살펴본 결과 진로결정 자기효능감은 통계적으로 유의미한 변화를 보였다. CBL이 학습자들의 진로결정에 주는 의미는 '이론의 현장적용을 통해 이해력이 향상되고, 공부하는 계기가 되어 진로에 대한 확신과 다짐이 생김'으로 도출되었다. 이를 통하여 CBL은 전문대학생의 진로지도에 적합한 교수학습법으로 적용 가치가 있다는 것을 알 수 있다.

• Journal of Advanced Marine Engineering and Technology
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• 제38권10호
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• pp.1251-1256
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• 2014

The use of lubrication oil is of many purposes and one among them is to drive the engine mounted on a ship. Hence the supply of clean lubrication oil is important. And an oil purifier is one of key components in marine diesel engines. At present, the element type full-flow oil filter has been widely used for cleaning the engine oil. The self-driven centrifugal oil purifier is a device which is used to remove the impurities in lubrication oil using a jet flow. The flow characteristics and the physical behaviors of particles in this self-driven oil purifier were investigated numerically and the filtration efficiencies were evaluated. For calculations, a Computational Fluid Dynamics method is used and the Shear Stress Transport turbulence model has been adopted. The Multi Frames of Reference method is used to consider the rotating effect of the flows. The influence of centrifugal forcehas been numerically investigatedto improve filtration efficiency of tiny particles. As a result of this research, it was found that the particle filtration efficiency using the only center axis rotating and outer wall rotating system are higher than that of the fully rotating system in the self-driven oil purifier.

• Computers and Concrete
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• 제15권1호
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• pp.37-54
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• 2015

In general, cracks significantly deteriorate the in-situ performance of concrete members and structures, especially in urban metro tunnels that have been embedded in saturated soft soils. The microcapsule self-healing method is a newly developed healing method for repairing cracked concrete. To investigate the optimal microcapsule parameters that will have the best healing effect in concrete, a 3D analytical probability healing model is proposed; it is based on the microcapsule self-healing method's healing mechanism, and its purpose is to predict the healing efficiency and healing probability of given cracks. The proposed model comprehensively considers the radius and the volume fraction of microcapsules, the expected healing efficiency, the parameters of cracks, the broken ratio and the healing probability. Furthermore, a simplified probability healing model is proposed to facilitate the calculation. Then, a Monte Carlo test is conducted to verify the proposed 3D analytical probability healing model. Finally, the influences of microcapsules' parameters on the healing efficiency and the healing probability of the microcapsule self-healing method are examined in light of the proposed probability model.