• Proceedings of the Korean Fiber Society Conference
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• 2003.10a
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• pp.114-114
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• 2003

Fiber bundles output from a draft operation have linear density irregularity. This study is dealing with modeling the dynamics of fiber bundle during roll drafting based on continuity, momentum balance, and a constitutive assumption. The simulation results from this model are compared with experimental results and analyzed by applying the concept of the Describing Function(DF). It can be confirmed that the simulation results agree well with experiments in a steady state, if the model parameters are good adjusted.

• Proceedings of the KIEE Conference
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• 2009.07a
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• pp.2184_2185
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• 2009

오늘날 세계 여러 국가에서 에너지 소비 절감에 대한 관심이 증가하고 있는 추세이며 특히 국가 전체 에너지 소비량중 상당량을 차지하는 건물에서의 에너지 절감에 대해 많은 관심이 집중 되고 있다. 본 논문에서는 건물 특히 주택에서의 에너지 절감 대안중 하나인 Zero Enegy House에 대해 알아보고 설계시 고려사항 및 효율적인 운영을 위한 가정용 에너지관리프로그램 및 시스템을 제안하고자 하였다.

• International Journal of Automotive Technology
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• v.5 no.3
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• pp.189-194
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• 2004

The viscoelastic layer material is widely used to control the noise and vibration characteristics of the panel structure. This paper describes the design technology of the effective vibration damping treatment using the concept of the equivalent parameter of viscoelastic layer materials. Applying the equivalent parameter concepts based on theories of shell, it is possible to simulate the finite element analysis of damping layer panel treatments on the vibration characteristics of the structure. And it is achieved the reduced computational cost and the optimal design of topological distribution for the reduction of vibration effect.

• Journal of Multimedia Information System
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• v.4 no.4
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• pp.295-300
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• 2017

In this paper deals with the problem of modeling customs information and the criterion for controlling its reliability in the process of managing customs clearance of goods is considered. As the main object of the study, the information of the cargo customs declaration, which is submitted to the customs authorities in electronic form for customs clearance of goods, is considered. The main criteria for determining the reliability of customs information, based on the classical methods used by other fields of science, are given.

• Journal of Electrical Engineering and Technology
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• v.1 no.1
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• pp.73-79
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• 2006

Conceptually, mechanical port of an electric machine can be doubled and the concept of dual-mechanical-port (DMP) will then give birth to a new breed of electric machines. In this paper, the various possible structures of DMP electric machine are discussed. Basic modeling and analysis issues related to the DMP electric machine are presented. An exemplary design of DMP machine is given and verified by FEM results. Potential applications and future research work are given to conclude the paper.

• Proceedings of the Korea Concrete Institute Conference
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• 1998.04a
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• pp.403-408
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• 1998

The analytical model is developed in order to predict the nonlinear flexural responses of bonded and unbonded prestressed concrete beam which contains advanced composite materials. The block concept is used, which be regarded as an intermediate modeling method between the couple method with one block and the layered method with multiple sliced blocks in a section. The model can successfully predict the flexural behavior of variously reinforced prestressed concrete beams.

• Proceedings of the Korean Society of Machine Tool Engineers Conference
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• 2001.04a
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• pp.182-187
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• 2001

This study deals with CARS (Computer Aided ROMUM System) which is a computer version of ROMUM (RObot Modularization of the Unit Motion). ROMUM was a method developed by the concept of modularization of the unit motion of robots. Because CARS is a computer assisted method of menu-driven type for human interface, this method can be easily applied for analyzing the work motion and measuring the execution time of robots. Therefore, it will be helpful for reducing the analysis effort and time of robot work.

• Journal of the Korean housing association
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• v.8 no.3
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• pp.163-175
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• 1997

This study is aimed at developing the systematic application of logic in composition of architectural space. It is investigated in the logical concept and its development applied to the rule of composition. Applying the method to the architectural composition. it is focused on modeling to the systematic approach in architectural composition. Therefore this study is investigated in the design process on the viewpoint of the systematic approach considering diverse variables. and it is accomplished to logical composition in architectural space. Being more studied. this method is applied to the composition of architect ureal space and practice.

• Proceedings of the KIPE Conference
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• 2003.07b
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• pp.584-587
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• 2003

Iterative learning control is an approach to improve the transient response of systems that operate repetitively over a fixed time interval. It is useful for the system where the system output follows the different type input, in case of design or modeling uncertainty In this paper, we introduce the concept of iterative learning control and then apply the learning control algorithm for multi-motor system for performance Improvement.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.2 no.4
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• pp.183-189
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• 1990

As an effort for modeling the water waves propagating in a wide range of incident angles as when waves are diffracted behind a breakwater, angular spectrum models have been developed. In this paper, the concept of the angular spectrum is illustrated and the recently developed angular spectrum models are introduced.