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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Korean Institute of Industrial Engineers
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Journal DOI :
Korean Institute of Industrial Engineers
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Volume & Issues
Volume 39, Issue 6 - Dec 2013
Volume 39, Issue 5 - Oct 2013
Volume 39, Issue 4 - Aug 2013
Volume 39, Issue 3 - Jun 2013
Volume 39, Issue 2 - Apr 2013
Volume 39, Issue 1 - Feb 2013
Selecting the target year
A Study of Electrode Wear Estimation and Compensation for EDM Drill
Lee, Cheol-Soo ; Choi, In-Hugh ; Choi, Young-Chan ; Kim, Jong-Min ; Heo, Eun-Young ;
Journal of Korean Institute of Industrial Engineers, volume 39, issue 3, 2013, Pages 149~155
DOI : 10.7232/JKIIE.2013.39.3.149
Electric discharging machining (EDM) is commonly adopted to machine the precise and tiny part when it is difficult to meet the productivity and the tolerance by the conventional cutting method. The die-sinking EDM method works well to machine the micro-parts and the perpendicular wall of die and mould, whereas EDM drilling, called super drill, is excellent to machine the deep and narrow hole regardless the material hardness and the hole location. However, the electrode wear is rapid compared to the conventional cutting tool and makes it difficult to control the electrode feeding and to machine precisely. This paper presents an efficient method to estimate the electrode wear using hole pass-through experiment while the stochastic method is used to compensate for the estimation model. To validate the proposed method, the commercial EDM drill machine is used. The experiment result shows that the electrode wear amount can be predicted very precisely.
Review of Social Manufacturing Technology on Product Life Cycle Management(PLM) Base
Park, Jong-Man ; Kim, Bong-Sun ;
Journal of Korean Institute of Industrial Engineers, volume 39, issue 3, 2013, Pages 156~162
DOI : 10.7232/JKIIE.2013.39.3.156
Social manufacturing architecture is based on information delivery through social media and SNS, PLM and social platform, crowd source and knowledge base on whole phase of product life cycle. Although advanced social manufacturing issues are rising globally, its technology emerging into domestic industry is likely to be slow. We focused to review technological changes and R&D trend, patent issues, and then suggest assignments and advices to be practiced for social manufacturing modeling.
Mouse Gesture Design Based on Mental Model
Seo, Hye Kyung ;
Journal of Korean Institute of Industrial Engineers, volume 39, issue 3, 2013, Pages 163~171
DOI : 10.7232/JKIIE.2013.39.3.163
Various web browsers offer mouse gesture functions because they are convenient input methods. Mouse gestures enable users to move to the previous page or tab without clicking its relevant icon or menu of the web browser. To maximize the efficiency of mouse gestures, they should be designed to match users` mental models. Mental models of human beings are used to make accurate predictions and reactions when certain information has been recognized by humans. This means providing users with appropriate information about mental models will lead to fast understanding and response. A cognitive response test was performed in order to evaluate whether the mouse gestures easily associate with their respective functional meanings or not. After extracting mouse gestures which needed improvement, those were redesigned to reduce cognitive load via sketch maps. The methods presented in this study will be of help for evaluating and designing mouse gestures.
Performance Evaluation of a Two-Product CONWIP System with Poisson Demand Processes
Park, Chan-Woo ; Kim, Su-Min ; Bang, Woo-Hyung ; Lee, Hyo-Seong ;
Journal of Korean Institute of Industrial Engineers, volume 39, issue 3, 2013, Pages 172~182
DOI : 10.7232/JKIIE.2013.39.3.172
In this study we consider a flow line CONWIP system in which two types of product are produced. The processing times of each product type at each station follow an independent exponential distribution and the demands for the finished products of each type arrive according to a Poisson process. The demands that are not satisfied instantaneously are either backordered or lost according to the number of unsatisfied demands that exist at their arrival instants. For this system we develop an approximation method to obtain the performance measures such as steady state probabilities of the number of parts of each product type at each station, mean waiting times of backordered demands and the proportion of backordered demands. For the analysis of the proposed CONWIP system, we model the CONWIP system as a two class closed queueing network with a synchronization station and analyze the closed queueing network using a product-form approximation method for multiple classes developed by Baynat and Dallery. In the approximation method, each subsystem is analyzed using a matrix geometric method. Comparisons with simulation show that the approximation method provides fairly good results for all performance measures.
Forecasting Renewable Energy Using Delphi Survey and the Economic Evaluation of Long-Term Generation Mix
Koo, Hoonyoung ; Min, Daiki ;
Journal of Korean Institute of Industrial Engineers, volume 39, issue 3, 2013, Pages 183~191
DOI : 10.7232/JKIIE.2013.39.3.183
We address the power generation mix problem that considers not only nuclear and fossil fuels such as oil, coal and LNG but also renewable energy technologies. Unlike nuclear or other generation technologies, the expansion plan of renewable energy is highly uncertain because of its dependency on the government policy and uncertainty associated with technology improvements. To address this issue, we conduct a delphi survey and forecast the capacity of renewable energy. We further propose a stochastic mixed integer programming model that determines an optimal capacity expansion and the amount of power generation using each generation technology. Using the proposed model, we test eight generation mix scenarios and particularly evaluate how much the expansion of renewable energy contributes to the total costs for power generation in Korea. The evaluation results show that the use of renewable energy incurs additional costs.
Study on Lumbar Spine Curvature and Lower Back Discomfort with Design Parameter of Automotive Seat Lumbar Support
Yang, Jungtae ; Lee, Joungho ; Choi, Hyungyun ;
Journal of Korean Institute of Industrial Engineers, volume 39, issue 3, 2013, Pages 192~197
DOI : 10.7232/JKIIE.2013.39.3.192
In this study, it is investigated the relationship between sitting discomfort and major design variables of lumber support, such as prominence, height and width through volunteer tests. Korean
percentile males and American
percentile males are recruited among 36 to 45 years old peoples who have driving experiences and have no back pain during the past 12 months. Subject ratings are asked by changing design variables randomly. Body pressure and lumber position changes are also measured as object measures. And correlation among subject ratings, object measures and three design variables are analyzed using statistical analysis. As a result, it is revealed that prominence is the most dominant factor that correlates to the discomfort strongly for both-Koreans and Americans and contribution of other two variables are very low.
Study on the Cooperation Model for Fusion-Technology Development in SMEs
Cho, Chanwoo ; Lee, Sungjoo ;
Journal of Korean Institute of Industrial Engineers, volume 39, issue 3, 2013, Pages 198~203
DOI : 10.7232/JKIIE.2013.39.3.198
Industry convergence is the inexorable trend, which has become a fundamental concept to understand the industrial dynamics and to develop business strategies. However, most of the previous studies on convergence have dealt with the issues at the macro-level (technology- or industry-level), little attention has been paid to the analysis of convergence at the micro level (firm-level). Recognizing that firms are the principal agents that develop fusion technologies, it is encouraged to help firms to work together for technology convergence. Therefore, this research proposes a collaboration model for SMEs, since SMEs tend to have novel ideas and are flexible enough to make fusion-technology. To do this, we conducted a survey for Korean SMEs and analyzed their successful cases of collaboration, which was used as a basis to develop the model. The research results will help develop strategy or policy to promote the collaboration between SMEs and ultimately to make a fusion-technology.
A Typology of Industry Convergences Based on Sources for Convergence Industries and Analysis of Critical Success Factors
Kim, Kwanho ; Jung, Jae-Yoon ;
Journal of Korean Institute of Industrial Engineers, volume 39, issue 3, 2013, Pages 204~211
DOI : 10.7232/JKIIE.2013.39.3.204
In this article, we propose a typology of industry convergences which encourages to invent new types of products and services through combining technologies across industries and identifying success factors of convergence industries which were resulted by industry convergences. In detail, the proposed typology of industry convergences is analyzed based on three viewpoints such as academic areas that provide the knowledge of convergence technologies, industry structures for the existing markets, and user experiences used for improving user friendliness. Such viewpoints can not only be considered as the sources for convergence industries but also be closely related with success factors of convergence industries. Based on the typology and the success factors of convergence industries, we suggest the implications about policies for the domestic industry convergence. It is expected that the results of this article can be widely applied to further activate industry convergences to overcome the recent global economic downturn.
A Methodology to Evaluate Industry Convergence Using the Patent Information : Technology Relationship analysis
Kim, Jeeeun ; Lee, Sungjoo ;
Journal of Korean Institute of Industrial Engineers, volume 39, issue 3, 2013, Pages 212~221
DOI : 10.7232/JKIIE.2013.39.3.212
As the convergence among technologies is reorganizing industry sectors, it is quite important to evaluate the probability of technological convergence, and to analyze how the technologies in a certain industry sector affect the same or other industry sectors. As a result, the large number of studies have been focused on the industry convergence. However, most of them have dealt mainly with case studies or strategy and policies and few efforts have been made to study it using quantitative data. The investigation of industry convergence using quantitative data will help understand the characteristics of industry and forecast the future of the industry from an objective point of view. Therefore, this research proposes a methodology to evaluate the possibilities of industry convergence using patent data. In particular, we emphasize the possibilities of technology convergence and suggest a technology relationship matrix to evaluate the technology convergence, as an antecedent of industry convergence. The feasibility and utility of the suggested methodology was verified with a case study on the convergence of IT and BT. The research results are expected to provide a useful guideline for developing a measure of convergence.
A Comparative Study on the Trend of Technological Convergence
Lee, June Young ; Kim, Dohyun ; Ahn, Sejung ; Kwon, Oh-Jin ; Moon, Yeong-Ho ;
Journal of Korean Institute of Industrial Engineers, volume 39, issue 3, 2013, Pages 222~232
DOI : 10.7232/JKIIE.2013.39.3.222
In recent years, `technological fusion or convergence` has drawn a lot of attention of innovation researchers and governmental policy makers as the driving force of technological innovation and industrial growth. There are, however, few studies on the analysis of longitudinal trends of technological convergence and its comparison between global and national level. In this study, with the citation data of about 18 million articles, we analyzed 1) the growth of representative convergence research areas, 2) the convergence of citing patterns between research fields, and 3) the changing trend of diversity index of all research fields. We conclude that technological convergence in korea shows the relatively strong orientation to the combination of neighboring fields than that of heterogenous fields in comparison to global trend. In particular, the relatively weak activity of cognitive science and the low level of mutual exchange between arts/humanities/social sciences and natural/engineering sciences in Korea are emphasized.