• Proceedings of the KSR Conference
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• 2004.10a
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• pp.1119-1124
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• 2004

Full depth precast concrete bridge deck system can be advantageously to reduce construction time, hence lowering the cost. This system has several significant design and construction component. To connect between the concrete slab and steel girder, precast deck has shear pocket. Post-tensioning tightens the joints and prevents any leakage though the joint. When post-tensioning is applied, stress concentration occurs in the edge of shear pocket. In this study, precast decks using four types of shear pocket is analyzed by F.E.M.

• Korean Journal of Computational Design and Engineering
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• v.6 no.4
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• pp.215-221
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• 2001

In the zigzag milling of a pocket having islands, tool retraction is one of the primary factors that decrease productivity. Therefore, tool path with minimum number of tool retraction has been needed. Most researches about this topic have been concentrated on obtaining the optimum solution formulated through the geometric reasoning off pocket. Recently, several attempts were made to simplify this problem into region partitioning in order to get the numerically expressed minimum solution. In this research, a method reducing the number of tool retractions extended from existing region partitioning is provided. Applying the segment that is normal to the reference direction of zigzag milling, region partitioning is carried out and structural elements of the region are searched via graphs of islands and characteristic points. Through the processes presented, the number of region partitioned is less than that of existing processes.

• Journal of Korea Game Society
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• v.17 no.4
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• pp.47-54
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• 2017

The popularity of Pokemon games has raised the interest in outdoor augmented reality games. This paper introduces a handgun type motion controller for an outdoor augmented reality shooting game and augmented reality game contents linked to it. The existing augmented reality game controller can only operate the game with the trigger interaction, but the proposed device can also operate the game with motion interaction. A motion-based game controller allows you to immerse yourself in Outdoor AR FPS game.

• KSBB Journal
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• v.15 no.5
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• pp.423-427
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• 2000

Intense research on biosensors has been performed in a number of different institution over the past 15 years, but relatively few commercial products have resultingly, the blood glucose sensor is a good example of a product which penetrated the market. However recently, the development of electrochemical and optical technologies has accelerated the turnover of the research as is illustrated by a rapid increase in the number of point-of-care diagnostic systems and analytical devices. Examples of such biosensors used in the fields of medical diagnostics, bioprocess control, and environmental monitoring are described, and summarized in an introduction to their characteristics, structures, and functions, given.

• Proceedings of the Korea Information Processing Society Conference
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• 2002.11a
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• pp.3-6
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• 2002

애니메이션은 세계 어느 나라이든지 해외 판매를 인식하고 있으므로 국제적 소재와 내용이 중요하다. 이러한 애니메이션 필요성에 따라서 국내에서도 이와 관련된 학과들이 수없이 말이 생겨나고 있으나 애니메이션 제작에 대한 디지털 컨텐츠가 매우 부족해서 수작업이나 과거 만화 애니메이션 형태에 국한하고 있는 곳이 대부분이다. 본 논문은 이러한 점에 착안해서 애니메이션 제작과 실습 모델을 개발했으며, 그 내용은 다음과 같다. "세계의 애니메이션 동향", "애니메이션 제작 방식", "카메라웍크", "세계의 애니메이션 작품소개", "애니메이션 제작 및 실습"의 주 메뉴와 7가지의 보조버튼 "한국의 3D 애니메이션", "북한 애니메이션 실상", "특집 포켓 몬스터", "애니메이션을 위한 포토샵", "애니메이션을 위한 플래쉬", "애니메이션을 위한 라이브 모션", "애니메이션과 디자인" 등이다.

• Proceedings of the KIEE Conference
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• 1996.07b
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• pp.987-989
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• 1996

This paper presents feedback control?method of educational robot made up of step motor by specific Tiny-C at PPI 8255 board of pocketcom(pocket computer; PC-E200). Machine language capacity of Tiny-C compiler(Ver 1.0) is about 22kbyte, and so it is easily transmitted from personal computer to pocketcom of conventional memory 32 kbyte. This experimental results show that Tiny-C control programs are practised on the pocketcom connected to PPI 8255 board for educational robot and X-Y plotter, and these are presented to show the effectiveness of the proposed algorithm.

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.18 no.9
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• pp.58-63
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• 2019

In this research, we examine the change of dimensional accuracy in the cutting process while changing cutting conditions such as feed rate and spindle rotational speed with chromium molybdenum steel (SCM415) material and TiCN- and TiAlN-coated end mill tools. According to dimensional accuracy measurement, TiCN-coated tool displays the most accurate dimensional tolerance at ${\varnothing}20mm$ at feed rates of 200 mm/min and 250 mm/min at a spindle rotation speed of 4,000 rpm. The largest dimension of the coating tool was able to make the TiAlN-coated tool suitable when comparing the smallest dimension.

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.18 no.7
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• pp.42-47
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• 2019

In this research, we try to study the change of squareness in the cutting process while changing cutting conditions such as feed rate and spindle rotational speed with chromium molybdenum steel (SCM415) material and TiCN, TiAlN coated end mill tool. The TiCN coating tool had the best straightness at 4,000 rpm at a feed rate of 200 mm/min. The TiAlN coating tool was best measured at 3,000 rpm at a feed rate of 200 mm/min. TiAlN coated tools had excellent dimensional tolerance when comparing the coating tool specifics.

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.18 no.7
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• pp.77-82
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• 2019

In this study, we study the change of surface roughness during cutting machining by changing the cutting conditions such as feed rate and spindle velocity with chromium molybdenum steel (SCM415) material and TiCN and TiAlN coated end mill tools. The surface roughness value of the test specimen for SCM415, was found to be 3,000 rpm in TiCN coated end mill and $0.634{\mu}m$ in surface roughness at a feed rate of 100 mm/min. In the TiAlN coated end mill, 300 mm/min, the surface roughness was the best at $0.699{\mu}m$. The overall average surface roughness of each coating tool was better than that of TiAlN.

• Journal of the Semiconductor & Display Technology
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• v.20 no.1
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• pp.42-47
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• 2021

In this study, we developed an application that can efficiently store and manage food ingredients in refrigerators. Rather than purchasing a new smart refrigerator, a small 'pocket scanner' is inserted inside the refrigerator using an existing refrigerator to track the location of food entering and leaving the refrigerator to efficiently organize the refrigerator and save time searching for ingredients. In addition, since it can automatically record the distribution period and purchase date, it notifies users through an alarm when the distribution period expires or is shortly left. As for the research method, after discovering the needs of users through in-depth interviews, the reactions of users were investigated by adding functions that fit those needs. Users felt satisfied with managing food efficiently through the 'pocket scanner' attached to the refrigerator and answered that it was very economical because various smart functions could be used without changing to a smart refrigerator. In the next study, we will also examine the usability of the application through usability evaluation.