• The Journal of Korean Association of Computer Education
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• v.18 no.3
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• pp.37-47
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• 2015

The purpose of this study is to review the concept mapping tools and provide implications for designing tools that support collaborative learning activities. For this purpose, representative concept mapping tools - Convince Me, Knowledge Forum, Cmaptools, Mindmeister, Belvedere - was analyzed by using the 3C(Communication, Coordination, Cooperation) framework. We have applied three research methods; 1) literature review on design principles of tools, 2) heuristic evaluation, 3) focus group interview. As a result, most of comcept mapping tools supported communication functions but partialy supported coordication and cooperation features.

• Journal of Preventive Medicine and Public Health
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• v.49 no.2
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• pp.129-133
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• 2016

Objectives: The systematic review (SR) is a research methodology that aims to synthesize related evidence. Updating previously conducted SRs is necessary when new evidence has been produced, but no consensus has yet emerged on the appropriate update methodology. The authors have developed a new SR update method called 'adaptive meta-analysis' (AMA) using the 'cited by', 'similar articles', and 'related articles' citation discovery tools in the PubMed and Scopus databases. This study evaluates the usefulness of these citation discovery tools for updating SRs. Methods: Lists were constructed by applying the citation discovery tools in the two databases to the articles analyzed by a published SR. The degree of overlap between the lists and distribution of excluded results were evaluated. Results: The articles ultimately selected for the SR update meta-analysis were found in the lists obtained from the 'cited by' and 'similar' tools in PubMed. Most of the selected articles appeared in both the 'cited by' lists in Scopus and PubMed. The Scopus 'related' tool did not identify the appropriate articles. Conclusions: The AMA, which involves using both citation discovery tools in PubMed, and optionally, the 'related' tool in Scopus, was found to be useful for updating an SR.

• Journal of Korean Society for Quality Management
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• v.36 no.3
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• pp.22-33
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• 2008

In this paper, first of all, the driving performance of QCCs(Quality Control Circles) that are stagnant during 10 years are reviewed. And the usage realities and utilization degree of quality improvement tools in the domestic activities of QCCs are empirically analyzed into size of company and type of business. Thus, this empirical study compares the results of past period in 1997${\sim}$1999 with the results of 6 sigma non-adapting period in 2000${\sim}$2003 through examining the collections of presentation for Korea Quality Control Circle Meetings. Also, according to the introduction of 6 sigma in QCCs activities the difference of utilization degree for quality improvement tools are analyzed to compare the results of 6 sigma non-adapting period in 2000${\sim}$2003 with the results of 6 sigma adapting period in 2004${\sim}$2006. Finally, the utilization degree of 6 sigma tools which follow the driving steps of 6 sigma, DMAIC, are analyzed.

• Transactions of the Korean Society of Mechanical Engineers
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• v.7 no.2
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• pp.161-167
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• 1983

In this study the phenomenon of cutting stress which arises on cutting tools and work pieces in cutting process is investigated by rake angle of cutting tools and feed for this measurement, P$_{s}$-1 (high modulus, photolastic Inc.) was used as a cutting tool, P$_{s}$-3 (medium modulus, photolastic Inc.) was used as work piece and reduction apparatus was attached to the head stock, and orthogonal cutting was adapted as a cutting method and transparent glass was used to block the strain in the orientation of thickness. The followings are the results of this study. (1) Photoelastic experimental equipments have made it possible to make dynamic measurement and analyze stress distribution in cutting tool and work piece surface which has hitherto been conducted only in static measurement and analyzing method. (2) The maximum stress arising at tools and work pieces in cutting process is on the tool edge tip, and the maximum stress arising on the tip of cutting tools is equal to that on the contacting area of work pieces in values. (3) The distributions of maximum shear stress on certain parts of the cutting tools and work pieces are as follows; for cutting tools, .alpha.=12.deg., .alpha.=0.deg., .alpha.=-12.deg. in order, and for work pieces, .alpha.=-12.deg., .alpha.=0.deg., .alpha.=12.deg. in opposite order.der.

• Journal of the Korean Society for Precision Engineering
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• v.29 no.10
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• pp.1056-1061
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• 2012

FEM analysis is essential to shorten the development time and reduce the cost for developing high-performance machine tools. Mount joint parts play important role to ensure static and dynamic stability of machine tools. This paper suggests a computational modeling of mount joint part of machine tools. MATRIX27 element of ANSYS is adopted to model mount joint parts. MATRIX27 allows the definition of stiffness and damping matrices in matrix form. The matrix is assumed to relate two nodes, each with six degrees of freedom per node. Stiffness and damping values of commercial mount products are measured to build a database for FEM analysis. Jack mounts with rubber pad are exemplified in this paper. The database extracted from the experiments is also used to estimate of stiffness and damping of untested mounts. FEM analysis of machine tools system with the suggested mount computational model is performed. Static and dynamic results prove the feasibility of the suggested mount model.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.7
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• pp.3016-3022
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• 2012

The purpose of this study is to measure and evaluate the degree of the pain using tools such as faces, glasses, chips, and colors for 96 children in three general hospitals. The children preferred faces, glasses, chips and colors in order, and they preferred orange color for pain-free and black for intense pain. The pain score was significantly high with the children who did not have experience in hospital except colors tool in the difference by means of general characteristics(faces, glasses, chips; p<0.05). Faces, glasses, chips, colors tools are pain assessment tools which are easy simple to handle by children including family and medical personnel. We expect these tools will be used in many ways to assess pain according to a child's age in a clinical setting.

• Communications of Mathematical Education
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• v.20 no.2 s.26
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• pp.179-205
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• 2006

The 7th curriculum sets a basic direction based on learner centered teaching. To this end, the curriculum puts a focus on activity centered classes using teaching tools. In reality, however, elementary school teachers find using the teaching tools in their classes difficult, although there are various studies going on to improve the practical use of the teaching tools in the classroom. In this paper, we present an effective approach to utilize those prior studies on using the teaching tools in classes for 4th, 5th and 6th graders.

• Journal of Digital Contents Society
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• v.14 no.3
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• pp.343-348
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• 2013

The purpose of this paper is to explore how effectively can learners improve their written skills in English language classrooms with the application of internet tools and software. First, the study compares and analyzes existing research on English writing and describes research background. Second, the study describes how internet tools can be used effectively in the English writing classrooms. For example, learners pick up vocabulary on the internet bulletin board and create sentences using the vocabulary. Third, the study analyzed changes in learners' in-class attitudes towards software and internet tools using comparative measures of performance. Unlike with offline instrumented classes, the in-class application of diverse software and internet tools such as websites and IRC (Internet Relay Chat) had a major impact on the improvement of learners' writing skills.

• Proceedings of the Korean Society of Machine Tool Engineers Conference
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• 2004.10a
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• pp.292-297
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• 2004

The conventional computerized numerical controller (CNC) of machine tools has been increasingly replaced by a PC-based open architecture CNC (OAC) which is independent of the CNC vendor. The OAC and machine tools with OAC led the convenient environment where it is possible to implement user-defined application programs efficiently within CNC. Tis paper proposes a method of operational fault cause diagnosis which is based on the status of programmable logic controller (PLC) in machine tools with OAC. The operational fault is defined as a disability state occurring during normal operation of machine tools. The faults are occupied by over 70% of all faults and are also unpredictable as most of them occur without any warning. Two diagnosis models, the switching function (SF) and the step switching function (SSF), are propose in order to diagnose the fault cause quickly and exactly. The cause of an occurring fault is logically diagnosed through a fault diagnosis system (FDS) using the diagnosis models. A suitable interface environment between CNC and develope application modules is constructed in order to implement the diagnostic functions in the CNC domain. The diagnosed results were displayed on a CNC monitor for machine operators and provided to a remote site through a web browser. The result of his research could be a model of the fault cause diagnosis and the remote monitoring for machine tools with OAC.

• Journal of Digital Convergence
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• v.18 no.10
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• pp.453-458
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• 2020

Recently, it is difficult to communicate face-to-face during work due to corona. To solve this problem, various platform-type communication tools are being created. For this study, we surveyed office workers in the 2040 field to find out what tools they are using the most and what are the most difficult problems with their collaboration. According to the analysis, practitioners use familiar tools that they used frequently for their work, and during the collaboration, poor communication is the most difficult. In this study, we would like to identify the tools and uses that are currently being used by domestic designers and developers in collaboration, and suggest directions for solving problems.