• Journal of Mechanical Science and Technology
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• v.20 no.10
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• pp.1607-1613
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• 2006

GIS (Gas Insulated Switchgear) is used in electric power system to insure non conductivity, breaking capacity and operating reliability. In the present study, dynamic analysis on the closing resistors of the GIS has bees carried out by the commercial dynamic analysis code COSMOS MOTION and 3-D modeling program SOLID WORKS. In order to find the minimum value of chatter vibration of closing resistors, the motion of moving and fixed resistor parts of closing resistors were simulated by varying the spring constant, the damping coefficient and the mass of moving and fixed resistor parts. The simulated results were compared with experimental results. The application of the results could reduce chatter vibration of closing resistors of the GIS. These data are also useful on the development of future model GIS with minimum chatter vibration for the determinations of the spring constant, the damping coefficient and mass of a moving part.

• Biomolecules & Therapeutics
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• v.2 no.2
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• pp.126-130
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• 1994

Water-soluble pectins isolated from Trichosanthes Rhizoma and Taraxii Herba and their deproteinized polysaccharides were purified through DEAE cellulose column and were applied to immunopotentiating and antitumor studies to clarify the nature of their activities of our previous reports. As the results of works, the lectins and deproteinized polysaccharides increased the number of circulating leukocytes and total peritoneal cells. And they markedly elevated the lowered production of antibody and reactivity of T Iymphocyte in tumor-bearing mice, which were rapidly recovered by discontinuance of sample treatments. They also decreased the growth of Sarcoma 180 solid tumor in mice.

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2012.10a
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• pp.83-84
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• 2012

SF 집합체 해체장치 개념설계요건 설정을 위해서 PWR $16{\times}16$ SF집합체 제원을 분석하였다. 또한 집합체 해체장치 주요요건을 도출하여 핵심메커니즘을 도출하였다. 주요요건은 다음과 같다. 집합체의 최대 clamping 힘은 각 grid의 경우: 240 kg, 하부노즐의 경우: 900 kg이다. 3 축 방향에서 절단을 위한 정확한 위치공자는 ${\pm}0.25mm$이다. 또한 처분을 위해 cuttings, fines 및 다양한 hardware를 수거하는 기능을 제공해야 한다. SF 집합체 해체를 위하여 드릴링 방식을 채택하였다. PWR SF의 종류에 따라 드릴링 위치가 다르기 때문에 위치제어와 해제장치 하단과 중간에 있는 X, Y, Z 제어를 할 수 있는 구조로 고안 하였다. SF 집합체 해체장치는 국내에서 가동되는 모든 PWR SF 집합체를 해체할 수 있는 구조로서 범용성을 가지고 있다. 원격 유지보수성을 향상하기 위하여 Solid Works 프로그램 툴(tool)을 이용하여 8개의 주요 모듈을 구성하였고, SF 집합체 해제장치 개념을 3D로 설계하였다.

• Journal of Industrial Convergence
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• v.3 no.1
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• pp.33-54
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• 2005

This article examines customer repurchase intention change. Specially we focus whether pre-purchase expectation and post-purchase satisfactions to retailers contribute to repurchase intention change. The previous works of customer satisfaction and repurchase intention were empirically tested the product based on the disconfirmation theory. But this study present the relations between the satisfaction and repurchase intention to stores. First, this study deliberately classified the types of stores. And I set the repurchase intention process apart into three part for empirical wok. In one part, the effect of trust has on expectation was tested. At the second procedure I test the expectation impact to satisfaction. Part three was about the relations between satisfaction and repurchase. In empirical test, convenience 200 sample was used. For these sample I use questionnaires that include the intensity of repurchase intention to postpurchase dissonance. Statistically regression uses as a solid tool to prove the relations between consumer satisfaction and repurchase. MANOVA results support the level of effect that different each store. They were supported through regression analysis. Also, by MANOVA the difference of them was turned out to be significant.

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2012.05a
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• pp.141-142
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• 2012

다운엔더 개념설계요건 설정을 위해서 PWR $16{\times}16$ SF집합체 제원을 분석하였다. 또한 수직에서 수평으로 전환될 때 충격량을 최소화하기 위해서 모의집합체 충격실험을 수행하였다. 그 결과 수직에서 수평으로 회전되는 각속도(30초/$90^{\circ}$)를 고려할 때 평균값은 약 0.1 g, 최대 약 0.3 g 정도가 되어 거의 충격을 받지 않음을 알 수 있다. 주요 설계요건으로 그리이드(grid)에 가해지는 수평클램프(clamp) 힘은 240kg, 하부노즐에 가해지는 수직클램프 힘은 900kg 이내로 하였다. 다운엔더의 개념설계를 위해서 기구학적 특성을 반영하였고, 전환시간을 30초/$90^{\circ}$로 하였다. 원격 유지 보수성을 향상하기 위하여 Solid Works 프로그램 툴(tool)을 이용하여 5개의 주요 모듈을 구성하였고, SF 집합체 다운엔더 개념을 3D로 설계하였다.

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.19 no.10
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• pp.74-80
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• 2020

Crawler-type hydraulic devices facilitate forward and backward driving of construction equipment by converting power into mechanical energy. The existing hydraulic device performance test process is time- and labor-intensive. This study aims to improve efficiency and productivity by automating the hydraulic device production performance test processes, which have been separately conducted so far. We also used SolidWorksⓇ, a 3D modeling program, and ANSYSⓇ, a structural analysis tool, for structural analysis and to verify the suitability of fixing pins required for connecting a hydraulic device to performance test equipment. Our results that employing an automated hydraulic device performance test process improves efficiency.

• Journal of the Korean Society of Costume
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• v.22
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• pp.277-296
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• 1994

The progressive artists in Austria including Gustav Klimt organized the Viennes Se-cessionist in 1897 and they took an active part in the reformation of the reformation of the applied art by accepting the Jugendstil standing for the true art. The vocabularies which characterize this group are decoration literature and the power of symbol. Klimt especially expressed these characteristics and his strong person-ality. For he created his works with the sym-bolic and friendly splendor through his highly decorative talents by accepting the enwly changed artistic situation in those days and by getting out of the naturalistic trends he was regarded as an avant-garde artist as a major figure among the Symbolist artists who revived European culture which was destroyed through the World War I. The characteristics of klimt's works was to express the various human thoughts and minds through the decorativeness and the femininity and to use the decorative elements of old Greek and Egyptian culture and Japanese art as the motives of his works, His art is to be found between the naturalistic characteristics and formalization as well as between the in-dustrial arts and the fine arts. In his many portraits he preferred women by trying to express eroticism hidden behind the human inner world. For this he demonstrated the attractiveness and the characteristics of the models by designing the illusionary and unique clothes. In general his genius was to be seen through the costume which was decorated with metals and jewels and through the characteristics of the modern costume in which the previous solid silhouette was removed and the gentle and elegant me-dium color was used. by accepting the new artistic trends in the turn of the century by fully expressing those characteristics in his creative world and by taking his theme from the eroticism through the decorativeness and the expression of women Gustav Klimt's uniquely decorative ex-pression completely realized the aesthetics of Jugendstil symbol decoration and expression which displayed not only the external appear-ance but also the inner world. Especially he created a new appearance emphasizing the costume of the characters in his works. Also through the costume he expressed his artistic consciousness and psy-chology. He showed the characteristics of the reformed costume through the medium color the simple forms and gentle silhouette. Also he tried to symbolize the passionate inner pow-er by designing the small mosaics such as the geometrical patterns whirlpool patterns and the indecent meanings all over the costume. Klmt's this kinds of attemps shows a Stil Kostume as the external outcome of the inner spiritual activities like art and it establishes a basis for the theory of costume are which deals with the concepts of costume from the artistics points of view. This tradition playing an important role in the contemporary history of costume even has been still inherited up to today.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.1
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• pp.705-713
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• 2018

An automotive ball joint connects the suspension system to the steering system and helps to enable rotational and linear motion between the two elements for steering. This study examines a ball joint used in medium and large-sized pickup trucks. Ball joints consist of a stud, socket, bearing, and plug. The main structural performance metrics of ball joints are the pull-out strength and push-out strength. These structural parameters must meet certain criteria to avoid serious accidents. Test and simulation methods are used to investigate the design requirements, but tests are time-consuming and costly. In this study, we modeled ball joints in SolidWorks and performed a finite element analysis in Abaqus to predict structural performance. The analysis was used to obtain the structural performance required for the static analysis of a 2D axisymmetric model. The uncertainties in the manufacturing of the ball joint were assumed to be the manufacturing tolerances, and the dimensional design variables were identified through case studies. The manufacturing tolerances at each level were defined, and the results were compared with experimental results.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.2
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• pp.235-242
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• 2017

A driving controller for active destruction protections can be applied to machinery, aerospace and military fields. In particular, this controller can be used to track and attack enemy flying objects through the active control. It is important to ensure reliability of the driving controller since its operation should be kept with precision to the target point. The temperature of the environment where the driving controller is used is about -32 C ~ 50 C (241~323 ). Heat generated in the driving controller should be maintained below a certain threshold (85 C (358 )) to ensure reliability; therefore, the study and analysis of the heat flow characteristics in the driving controller are required. In this research, commercial software Solid-Works Flow Simulation was used for the numerical simulation assuming a low Reynolds number turbulence model and an incompressible viscous flow. The goal of this paper is to design the driving controller safely by analyzing the characteristics of the heat flow inside of the controller composed of chips or boards. Our analysis shows temperature distributions for boards and chips below a certain threshold.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.11
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• pp.7990-8000
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• 2015

Plant factories are plant cultivation systems which produce farm products uniformly under the controlled environmental condition regardless of seasons and places. Thermal flow in the plant factory is an important parameter in cultivating plants. In this research, we study thermal flow characteristics for a hybrid plant factory with multi-layer cultivation shelves using computer simulation techniques. In order to obtain numerical solutions for thermal flow characteristics, a finite volume method was applied. We consider a low-Reynolds-number ${\kappa}-{\epsilon}$ turbulence model, incompressible viscous flows, and pressure boundary conditions for numerical simulation. Commercial software Solid Works Flow Simulation is then used to investigate characteristics of thermal flows in the plant factory applying several different inflow air velocities and arrangements of cultivation shelves. From numerical analysis results, we found that temperatures in cultivation shelves were uniformly distributed for Case 3 when the inflow air velocity was 1.6 m/s by using a blower in the plant factory. However in Case 1 lower temperature distributions were observed in test beds, TB2 and TB3, which indicated that additional temperature control efforts would be required. Average shelf temperature increased by $3^{\circ}C$ using artificial light source (DYLED47) with 50% blue and 50% red LED ratios. Korea Academia-Industrial cooperation Society.