• Transactions of the Korean Society of Machine Tool Engineers
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• v.11 no.6
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• pp.83-90
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• 2002

In this study, the compliance measurement and cutting operation in tool - machine tool - workpiece system were carried out for the parameters identification of chatter vibration in turning.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2008.11a
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• pp.37-38
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• 2008

• Proceedings of the IEEK Conference
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• 1998.10a
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• pp.1073-1076
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• 1998

This paper describes implementation of a highlevel graphic design entry tool operating on X Window system The proposed design entry tool includes visual schematic entry, hierarchical modeling ability and VHDL source code generation. Experimental results show the efficiency of the proposed design system

• Proceedings of the Korean Operations and Management Science Society Conference
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• 1999.04a
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• pp.485-486
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• 1999

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2010.11a
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• pp.51-52
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• 2010

• Spatial Information Research
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• v.11 no.3
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• pp.275-289
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• 2003

This study focused on offering a helpful information for the touring. To develop a tour route guidance tool, it is needed to use a GIS function, which can suggest a possible shortest path based on time and distance. A Traveling salesman problem algorithm, which was developed to solve multi destination problem in network analysis, was used to implement a tour guidance system. This system was developed using ArcObjects programming components within ArcGIS 8.3. Jeju city was selected for the case study to apply the tool and to test the effectiveness of it. This study demonstrated that this tool was considerably effective for finding a probable optimum tour path in the following aspects. First, it can help tourists to select several attractions from numerous tour sites in an area given limited time. Second, tourist can manage time efficiently by organizing their tour courses on the basis of the tool. Third, tourists can reduce the uncertainties that may happen under unexpected situations in unfamiliar places by obtaining specific spatial information using the tool. Fourth, the Graphic User Interface of the tool can be easily used to obtain visual information of spatial data.

• The Journal of the Korea Contents Association
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• v.18 no.3
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• pp.354-360
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• 2018

Recently, the computer aided learning system has promoted a new educational concept and education system. The purpose of this study is to construct a theoretical model for the epistemic frame and evaluation tool which is emphasized according to the 21st century. Specifically, first, this study conducted a domain analysis of epistemic frame. Second, this study developed an evaluation tool to measure epistemic frame. Finally, the evaluation tool is examined in terms of validity and reliability using factor analysis and Cronbach's alpha. As a result, the theoretical model was presented through the consultation of the Advisory Group and the evaluation tool was empirically validated. We expect that this study will provide a useful information to researchers and practitioners who want to develop a computer based learning tool for learning epistemic frame.

• The Journal of the Korea Contents Association
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• v.16 no.3
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• pp.247-256
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• 2016

This paper points out that the existing digital story creation tools are biased in the field of entertainment storytelling, so it proposes a specialized tool for non-fiction creation. This paper selects Quantifying Theory to design this tool. When creating nonfiction storyline, it is important to have the appropriate combination between the actual events and fictional elements. A Gossip System, based on Quantifying Theory, is suitable for that work. Before designing a Gossip System as a nonfiction creation tool, this analysis evaluated that the Gossip System in and . As a result, the linked structure in is useful in searching for material for non-fiction creation, and the separated structure in is ideal for arranging dramatic events. This paper proposed a method of switching the fact to fiction through a combination of this two Gossip System structure. I conclude that this is the best method for non-fiction creation tool.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.18 no.10
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• pp.2489-2496
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• 2014

The existing ship repair tool management system based on hand writing has many problems such as frequent loss of tool and overdue. To solve this problem, same systems have adopted the bar-code system. However, the systems can't cope with a problem to substitute spurious tool for genuine one on bar-code damage. Therefore, additional validation steps are necessary in order to manage expensive ship repair tool. In this paper, we propose an image comparison method for ship repair tool management. To be more concrete, we propose a normalization method and determination conditions for image comparison to use characteristics of mobile device. The normalization method makes use of the characteristics of mobile device that provides functions of real time recording, overlapping and cropping images. The proposed method applies three conditions(sum of inner angles, size of angle, position of corner coordinates) into the comparison module. The implemented system shows good performance on change direction, lighting, size and etc. The accuracy is more than 95%.

• Journal of the Korea Computer Graphics Society
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• v.21 no.5
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• pp.1-10
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• 2015

This study proposes a method of developing authoring tool that can easily and intuitively generate diverse digital leaves that compose virtual landscape. The main system of the proposed authoring tool consists of deformation method for the contour of leaf blade based on image warping, procedural modeling of leaf vein and visualization method based on mathematical model that expresses the color and brightness of leaves. First, the proposed authoring tool receives leaf input image and searches for contour information on the leaf blades. It then designs leaf blade deformation method that can generate diverse shapes of leaf blades in an intuitive structure using feature-based image warping. Based on the computed leaf blade contour, the system implements the generalized procedural modeling method suitable for the authoring tool that generates natural vein patterns appropriate for the leaf blade shape. Finally, the system applies visualization function that can express color and brightness of leaves and their changes over time using a mathematical model based on convolution sums of divisor functions. This paper provides texture support function so that the digital leaves that were generated using the proposed authoring tool can be used in a variety of three-dimensional digital contents field.