• Proceedings of the Korean Society of Precision Engineering Conference
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• 한국정밀공학회 2005년도 추계학술대회 논문집
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• pp.170-175
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• 2005

Generally, Aluminum is superior to durability, light, and characteristics of the material are embossed luminant. So, these characteristics of aluminum will be used automobile interior parts by aluminum injection moulding. Especially, The external of Aluminum plate is engraved differing pattern by roller working. This working can use any longer and be seen gracefully. This is the reason why aluminum insert moulding is used. This feature of research can be characterized by simple process to customize aluminum sheet of blanking and forming process with internal parts of configuration if products are injected by aluminum sheet. Besides, to analysis completed Automobile interior parts to be concerned volumetric shrinkage, best gate location, fill time analysis and so on through the mold-flow before the aluminum insert moulding is worked.

• Journal of the Korea Academia-Industrial cooperation Society
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• 제10권9호
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• pp.2202-2209
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• 2009

Joint paths are induced mathematically for many kinds of joint pattern between master- and sub-pipes. By compensating them with root gap of welds and kerf width, real cutting paths are determined. Their NC codes are generated, and the paths generated by NC code are verified by a ghost function. A beveling is implemented through tilting a torch in the A- and B-axis direction for 8 sections in the chuck rotation of C-axis. The effective CAM program was developed specially for 6-axis CNC pipe coasters which cut a master or sub- pipe along the cutting path and simultaneously fulfill a beveling process.

• Journal of the Korea Institute of Information and Communication Engineering
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• 제12권6호
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• pp.1142-1147
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• 2008

In recent years, the efforts for standards of Web contents accessibility and the improvements of Web accessibility are expanded in the government, enterprises, and public institutions. In this paper, we examine the Korean Web contents accessibility guidelines, and propose the evaluation scheme for the education homepage by the Web accessibility guidelines using KADO-WAH program which is the evaluation tool for Web accessibility. Also, we propose the improvement scheme for education homepage by modifying the error and warning clauses directed in which are appeared in the evaluation report. And, we evaluate the various education homepages using KADO-WAH, and analyze the comparisons for the Web accessibility guidelines among the education homepages.

• Journal of the Korea Institute of Information and Communication Engineering
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• 제11권12호
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• pp.2419-2425
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• 2007

There are many activities that open source software can using at several areas from the government. It enforces the open source software demonstration activities with different meaning link It is an evaluation field whether or not using the open source software in information projects. But the public information and the education against the open source software are insufficient to the middle and high school students who are be latent open source software users. In this paper, I present an examination and analysis of the open source software understanding of the middle and high computer subject teachers in Korea. This research results could be applied with the place fundamental data which searches a program which revitalizes the open source software education from the middle and high school.

• Journal of the Korea Institute of Information and Communication Engineering
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• 제11권11호
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• pp.2192-2198
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• 2007

An edutainment is a composite which are joining with the serveral matter and the multiplicity of techqniues An Eduainment software use serveral audio and video media. The human have different preference to audio and video media. It is difficult to evaluate quality of an edutainment software than a general software. So, we need an evaluation factors to compare quality of edutainment software. We developed the evaluation factors for edutainment software. And the middle school students used the evaluation factors to evaluate the favorite edutainment softwares among them. We evaluate and analyze the results.

• Journal of IKEEE
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• 제23권2호
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• pp.747-750
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• 2019

Wearable devices have become practically indispensable to daily life and helped people track and manage fitness, health, and medical functions etc. As these wearable devices become smaller and more comfortable for the user, the demand for longer run time and charging ways presents new challenges for the power management engineer. Wireless power transfer (WPT) is the technology that forces the power to transmit electromagnetic field to an electrical load through an air gap without interconnecting wires. This technology is widely used for the applications from low power smart phone to high power electric railroad and main electrical grid. There are two kinds of WPT methods: Inductive coupling and magnetic resonant coupling. The model using magnetic resonant coupling method is designed for a resonant frequency of 13.45 MHz. In this study, the hardware implementations of these two coupling methods are carried out, and the efficiencies are compared.

• Journal of the Korean Orthopaedic Association
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• 제56권6호
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• pp.472-483
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• 2021

With increased development of patch graft, the number of repair using patch graft in massive rotator cuff tear has increased. Understanding characteristics of various patch graft might be helpful for selection of type of patch, and to improve the outcomes for the treatment of massive rotator cuff tears using patch grafts. Therefore, this paper reviews various studies dealing with clinical outcomes of rotator cuff repair using diverse patch grafts in massive rotator cuff tears.

• Journal of the Korea institute for structural maintenance and inspection
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• 제10권4호
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• pp.160-166
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• 2006

Optical Fiber Bragg Grating sensor has a good performance to measure microscopic displacement which can measure strain of lining concrete and cylindrical structure like high intensity containment building and it can present many advantages like a corrosion resistance from the durability point of view. Then it can measure plane geometrical displacement of cylindrical structures with two-way displacement FBG sensor module. According to the test result, measurement of FBG sensor is better performance than other electric sensor system and 2D-level measurement. As a test result, Resolution of the two-way displacement sensor module with FBG sensors are more 10 times than other LVDT or 2D surveying.

• Journal of the Korea institute for structural maintenance and inspection
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• 제10권3호
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• pp.159-164
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• 2006

Mobile communication with wireless modem can be powerful tool in web-based structural health monitoring system in which power and communication method are crucial points. In this study, the major reasons of side cracks in tunnel lining are studied by FEM analysis. In addition, a web-based monitoring system using mobile communication with wireless modem is applied to the tunnel structure to monitor the long term behavior of the side cracks. The field application shows that CDMA is useful method for structural health monitoring system which installed long distance away.

• Journal of the Korea Institute of Information and Communication Engineering
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• 제10권1호
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• pp.57-64
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• 2006

Multiprocessor system on chip (MPSoC) platforms has set a new innovative trend for the SoC design. Quality of service parameters and performance matrix are leading to the adoption of new design methodology for SoC, which will incorporate highly scalable, reusable, predictable, cost and energy efficient platform not only for underlying communication backbone but also for the entire system architecture of NOC. Like the layered architecture for the communication backbone of NOC, we have proposed the entire system architecture for NOC to be a seven layered architecture in itself. Such a platform can separate the domain specific issues which will model concurrency along with the synchronization issues more effectively. For such a layered architecture, model of computation will provide a framework to that can model concurrency and synchronization issues which are natural for any application. Therefore it becomes extremely important to use a right computation model in a specific NOC region.