• 한국마이크로전자및패키징학회:학술대회논문집
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• 한국마이크로전자및패키징학회 2002년도 추계기술심포지움논문집
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• pp.87-90
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• 2002

무선 통신 시스템의 광대역화에 따라 수십GHz 이상에서의 시스템 구성이 필요하다. 이러한 시스템의 상용화를 위해서는 수십GHz 이상에서의 고주파 특성 만족과 저비용의 공정이 요구된다. 본 연구에서는 후막 리소그라피 공정을 이용하여 미세라인 특성에 민감한 BPF를 설계.제작하였다.

• 한국자동차공학회논문집
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• 제6권6호
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• pp.1-6
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• 1998

A leaf spring plays an important role in a passenger bus. Since characteristic of a leaf spring has a hysteresis behaviour, modeling technique for a leaf spring is an important issue for passenger bus analysis. In this paper, modeling technique for a leaf spring is presented. First, non-linear FEM model of a leaf spring is constructed then it is used to make an approximated model to be used in dynamic analysis. The modeling procedure is ex-plained in step by step approach. Then, this model is applied to dynamic analysis of a mini-bus with flexible body and non-linear dynamic force element. The results are compared with test data.

• 전기학회논문지
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• 제67권9호
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• pp.1189-1196
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• 2018

7 type composites (40, 45, 50, 55, 60, 65, and 70 wt.%)were prepared for the environmentally friendly GIS Spacer. Five kinds of samples were prepared for optimization of the filler content ratio (MS: MA = 1: 9, 3: 7, 5: 5, 7: 3, 9: 1) of epoxy / microsilica and microalumina. As a result of evaluation of the partial discharge resistance characteristic, surface erosion is generally slowed down as the fill amount of micro silica is increased. Also, partial discharge resistance characteristics for the development of insulating materials with optimal mixing ratios of heterologous showed a higher partial resistance of discharge and a decrease in erosion, as the filler content ratio of micro silica was larger. In the future, various researches such as electrical, mechanical, and thermal studies will be needed to develop insulating materials that can commercialize power devices in environmentally friendly insulating gas.

• 대한기계학회논문집A
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• 제28권11호
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• pp.1629-1636
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• 2004

The continuous casting is primarily a heat-extraction process in which the heat transfer at various cooling zones profoundly influences quality of products. So development of numerical model is necessarily needed for more specific and clear investigations upon heat transfer mechanism at mold and secondary cooling zones. In this study, heat transfer coefficients which show the characteristic of heat transfer mechanism in mold are calculated for more exact analysis with temperature measured in bloom mold using optimal algorithm, and finally the validity of cooling conditions at secondary cooling zone actually used at field fur 30 Ton bloom type continuous casting of 0.187%C is investigated. From the results of solidification analysis, the characteristic of bloom mold shows a similar tendency with that of previous studies, and optimized cooling conditions for 0.187%C are presented.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2004년도 추계학술대회논문집
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• pp.188-192
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• 2004

The purpose of this study is to develop an air spring mount that has high damping characteristic. The new type air spring mount has a polyurethane core in the center. By adding the core, the air spring mount shows excellent damping effect and good resistance to lateral force. This study includes both the analytical study and the experimental study of the new type air spring mount.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2000년도 추계학술대회논문집
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• pp.379-383
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• 2000

This paper describes the design program of duct silencer. Duct silencer is used ventilating system. Variables in the program for predicting transmission loss are width of splitter, airway width, perforate plate, absorption material and frequency. Generally used expression for predicting transmission loss has something that don't think about frequency characteristic. Therefore we propose the new expression that considered frequency characteristic. In the 1/1 octave band center frequency, the expected weighting number(K) is fitted with absorption ratio and airway width. The fitted 2nd degree polynomial expression is based on the test data performed in YOUIL Industrial Corperation. This program's accuracy is about 90 percent.

• 한국멀티미디어학회논문지
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• 제24권3호
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• pp.508-517
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• 2021

In this study, the possibility of contents was explored by extracting materials that can be used as regional-specific contents. To this end, the possibility of local content specialization was examined for Eomuk, the representative food of Busan. First, it looked at the content process of Busan's regional-specific material and developed it as a character. Next, it looked at the story development and the process of incorporating it into animation. In the future, based on this study, we would like to present guidelines for the spread of Korean-style regional-specific content.

• 한국정보기술학회 영문논문지
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• 제10권2호
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• pp.125-138
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• 2020

Due to the development of camera technology, the cost of producing time-lapse video has been reduced, and time-lapse videos are being applied in many fields. Time-lapse video is created using images obtained by shooting for a long time at long intervals. In this paper, we propose a method to improve the quality of time-lapse videos monitoring the changes in plants. Considering the characteristics of time-lapse video, we propose a method of separating the desired and unnecessary objects and removing unnecessary elements. The characteristic of time-lapse videos that we have noticed is that unnecessary elements appear intermittently in the captured images. In the proposed method, noises are removed by applying a codebook background modeling algorithm to use this characteristic. Experimental results show that the proposed method is simple and accurate to find and remove unnecessary elements in time-lapse videos.

• 아동학회지
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• 제34권6호
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• pp.77-96
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• 2013

The purpose of this study was to examine the relationships among mother's psychological characteristics(self-esteem, self-efficacy, and depression), parenting related factors(maternal parenting stress and mother's knowledge on infant development), maternal parenting style, and two-year-old infants' development. The participants consisted of 1735 mothers and their two-year old infants selected from a sample of the 3rd Panel Study of Korean Children(PSKC) by the Korea Institute of Child Care and Education(KICCE), conducted in 2010. Data were analyzed by means of a Structural Equation Model(SEM) to identify the structure and relationships among the various factors. The significance of direct and indirect effects to test the mediating effect of maternal parenting style were identified via bootstrapping. The results indicated that maternal parenting style most definitely mediated the relationship among the mother's psychological characteristics(self-esteem and self-efficacy), parenting related factors(maternal parenting stress and mother's knowledge on Infant development) and the development of their two-year-old infants.

• 복식문화연구
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• 제17권5호
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• pp.733-745
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• 2009

The contra-sexual phenomenon that is recently focused is one of the new factors, which is focused when explaining the life style of progressive woman's image and it is creating cultural category. Moreover, the contra sexual people that are rising as new consuming subjects are not simple primary consumers but their shopping culture and cultural tastes are giving effects to many people. Because of the tendency, marketer of consuming industry are making efforts to predict the changes of contra-sexual people's shopping habits and tastes. Therefore, it is necessary to grasp contra-sexual phenomenon and research the fashion design aiming at that in order to predict woman's fashion image in the future. Therefore, the study considered concept and characteristic of contra-sexual phenomenon and surveyed its example in the popular culture. And, the study analyzed the formative characteristic of contra-sexual fashion shown in the public cultures such as drama and movie. On the basis of the result, design was suggested by reflecting contra-sexual fashion characteristic under the concept of 'Urban Splendor'. From the results above, it was possible to grasp the concept and characteristic of contra-sexual phenomenon, which appeared as a trend and understand new woman's image and the fashion that has changed because of it. It is considered that the establishment of the foundation of contra-sexual phenomenon, which plays as an important variable in woman's fashion, fashion accessory, cosmetic and advertisement field but it is hard to clarify, by analyzing the work aiming at contra-sexual phenomenon will be helpful for predicting the change of woman's fashion in the future.