• Transactions of the Korean Society of Mechanical Engineers A
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• v.25 no.10
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• pp.1651-1658
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• 2001

It is necessary to evaluate fatigue strength and reliability of the connecting rod which is core part in automotive engine to assure the high level of durability of automobile. For this purpose, the loading conditions in automotive engine is obtained by the dynamic analysis. Based on these results, the critical section was identified by the finite element analysis. The fatigue strength under constant amplitude was evaluated and the mean of the fatigue limit at R = -2.27 derived from the staircase method was 311.2MPa. And the failure probability( F$\sub$p/ ) derived from the strength-stress interference model is 0.0003% at the 99.99% confidence level and the mean factor of safety was 4.2.

• Transactions of Materials Processing
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• v.1 no.1
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• pp.33-41
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• 1992

Sintered P/M connecting rod is forged to increase density and to satisfy dimensional specifications. Flow of the materials is different form that of wrought materials due to pores in the preform. The Mises yield function was modified to. include the first invariant of stress tensor, and the associated flow rule was derived by applying the normality rule to the yield function. Axisymmetric and plane-strain finite element analyes were carried out for the ring and beam portions of the connecting rod, respectively. The flow of the preform and density change of the analysis are presented in this paper. A load-stroke curve was also presented by superimposing analysis results for the ring and beam portions.

• Journal of Powder Materials
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• v.2 no.1
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• pp.19-28
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• 1995

Powder forging is a combined technology of powder metallurgy and precision hot forging. Recently, the technology is developing rapidly because of its economic merits, especially in automotive part manufacturing. In the present study, the finite element technique was developed to predict density variation during P/M forging and the technique was applied to analysis of forging of a P/M connecting rod. Although deformation mode of the connecting rod was quite complex, several sections were selected and analyzed under an assumption of asymmetric or plane strain deformation. It was found that some modifications were necessary on the cross section of the beam portion. Therefore, the cross section was modified repeatedly until a satisfactory result of the analysis was obtained. On the other hand, no modifications were necessary in the ring and the pin portions. It is anticipated that the developed technique can be used to optimize preform design and manufacturing processes in P/M forging, which are highly critical to produce successful products in practice.

• Journal of Fisheries and Marine Sciences Education
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• v.19 no.1
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• pp.29-38
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• 2007

Recent Internet Service Environment has been moved to provide geographic information based on location as well as existent various information. In this paper, we develop an integrated software connecting GIS information to Internet. In the other hand, in GIS S/W, it is important that rapid output of Digital Map and effective trnasmission of specified Digital Map about moving area. To achieve the purpose, we propose a reduced digital format to diminish original digital maps. Also, we develop a GIS-based software engine with functions connecting location information to URL as well as map viewer and map handling. Futhermore, our developed GIS S/W is based Module in LBS application using GPS sensor.

• Journal of The Korea Institute of Healthcare Architecture
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• v.15 no.1
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• pp.33-40
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• 2009

This study aims to plan connecting living facilities considering on the Barrier Free Walking of the disabled and the elderly in the residential area. We had found several physical problems on the pedestrian's way that becomes the major factor of disturbing the barrier free movement for using living facilities in the local area by investigations and enquetes. We had suggested the arrangement method for these physical problems on the pedestrian's way and building the ideal area for living facilities by the disposition stages with the result of investigations and enquetes. After these process, we had planned connecting living facilities considering on the Barrier Free Walking of the disabled and the elderly in the residential area.

• Journal of the Korean Institute of Rural Architecture
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• v.17 no.3
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• pp.71-80
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• 2015

This paper analyses connecting space of the 'ㅁ' shaped houses from Chosun Dynasty, Korea. Houses are reflected by various factors such as shapes, locations and territoriality by the social class system. Because of their spatial arrangements, 'ㅁ' shaped houses might have various planning approaches. This paper looks at Sarang-chae and An-chae, which are the common elements of the houses, and analyses their architectural characteristics in spatial arrangements and territoriality. The territoriality was formed by the combination of Chae and Madang. The spatial arrangement was formed by the social norms of its time. Hengrang-chae and Dam-jang, which were located in-between Chae and Madang, limit territoriality by providing privacy and interrupting the circulation.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.22 no.5
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• pp.1064-1074
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• 1997

In this paper we propose an every-other-row-connecting bilayered ShuffkeNet for optical WDM(wavelength division multiplexing) multihop networks. We calculate the diameter and the average number of hops of the proposed every-other-row-connecting bilayered ShuffleNet. Using the result, we also calcuate throughputs and delays of the proposed topology, which show higher efficiencies compared to the conventional ShuffleNet, the bilayered ShuffleNet and asymmetric bilayered ShuffleNet.

• Proceedings of the Korea Information Processing Society Conference
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• 2014.04a
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• pp.375-378
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• 2014

본 논문은 인터넷에서 주민등록번호가 유출 또는 도용되고 있는 문제점을 해결하기 위해 인터넷 사업자에게 이용자의 중복가입을 확인할 수 있는 방법 DI(Duplicated Information) 와 사업자간 동일 사용자를 식별하는 방법 CI(Connecting Information)을 제안한다. 인터넷 사업자가 이용자의 인터넷 사이트에 중복으로 가입하는 것을 확인 할 수 있는 정보를 제공하기 위한 중복 가입확인 정보 메시지 형식 규정을 제안하고, 인터넷 사업자가 타 인터넷 사업자와 연계 정보, 포인트 적립 등 제휴 서비스를 제공하기 위해 동일 이용자를 식별 할 수 있도록 연계 정보 메시지 형식 규격을 제안한다. 이용자의 개인 정보를 보호하는 수단을 제공하고 인터넷 사업자에게는 이용자의 유일성을 확인할 수 있는 수단을 제공할 것이다.

• Journal of Korean language education
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• v.28 no.2
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• pp.185-208
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• 2017

This study is for investigating strategy of associating loanwords to original words of Korean language learners. Loanwords have often been thought as easily learnable because the knowledge of the original word is assumed to be helpful in discovering the meaning. But there is much phonological, morphological and semantic transforming in accepting original words in Korean, and therefore, it is not easy to connect Korean loanwords to the original words. In this study, the awareness of loanwords and competence of associating Korean loanwords to the original words of advanced Korean language learners from China are investigated. As a result, the awareness of loanwords is remarkably lower than the awareness of non-loanwords. And, the competence of association also was very low with 17.9% of successful association. This means the learners have difficulty in inferring the meaning of loanwords by connecting that to original words.

• Journal of Korean Association for Spatial Structures
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• v.23 no.2
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• pp.45-52
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• 2023

Modular construction is an economical and efficient construction that reduces time and costs by manufacturing units in factories and constructing them on site. Currently, the demand for modular construction is increasing not only abroad but also domestically. As the demand for modular construction increases, a lot of development and research on connections between modular units are being conducted. Connections between modular units should be quick and simple to assemble when assembling units on site, and should be in a form that allows each unit to be connected regardless of direction. In addition, it must be able to exert sufficient strength against external loads. In this study, a connection between modular units using connecting steel plates and bolts was proposed, and the nonlinear behavior of the connection to external lateral force was analyzed through finite element analysis, and resistance performance was evaluated.