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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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Korean Institute of Industrial Engineers
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Volume & Issues
Volume 38, Issue 4 - Dec 2012
Volume 38, Issue 3 - Sep 2012
Volume 38, Issue 2 - Jun 2012
Volume 38, Issue 1 - Mar 2012
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Development of an User Interface Design Method using Adaptive Genetic Algorithm
Jung, Ki-Hyo ;
Journal of Korean Institute of Industrial Engineers, volume 38, issue 3, 2012, Pages 173~181
DOI : 10.7232/JKIIE.2012.38.3.173
The size and layout of user interface components need to be optimally designed in terms of reachability, visibility, clearance, and compatibility in order for efficient and effective use of products. The present study develops an ergonomic design method which optimizes the size and layout of user interface components using adaptive genetic algorithm. The developed design method determines a near-optimal design which maximizes the aggregated score of 4 ergonomic design criteria (reachability, visibility, clearance, and compatibility). The adaptive genetic algorithm used in the present study finds a near-optimum by automatically adjusting the key parameter (probability of mutation) of traditional genetic algorithm according to the characteristic of current solutions. Since the adaptive mechanism partially helps to overcome the local optimality problem, the probability of finding the near-optimum has been substantially improved. To evaluate the effectiveness of the developed design method, the present study applied it to the user interface design for a portable wireless communication radio.
Design of Hand Gestures for Smart Home Appliances based on a User Centered Approach
Choi, Eun-Jung ; Kwon, Sung-Hyuk ; Lee, Dong-Hun ; Lee, Ho-Jin ; Chung, Min-K. ;
Journal of Korean Institute of Industrial Engineers, volume 38, issue 3, 2012, Pages 182~190
DOI : 10.7232/JKIIE.2012.38.3.182
With the progress of both wire and wireless home networking technology, various projects on smart home have been carried out in the world (Harper, 2003), and at the same time, new approaches to interact with smart home systems efficiently and effectively have also been investigated. A gesture-based interface is one of these approaches. Especially with advance of gesture recognition technologies, a variety of research studies on gesture interactions with the functions of IT devices have been conducted. However, there are few research studies which suggested and investigated the use of gestures for controlling smart home appliances. In this research the gestures for selected smart home appliances are suggested based on a user centered approach. A total of thirty-eight functions were selected, and a total of thirty participants generated gestures for each function. Based on the Nielsen (2004), Lee et al. (2010) and Kuhnel et al. (2011), the gesture with the highest frequency for each function (Top gesture) has been suggested and investigated.
kNNDD-based One-Class Classification by Nonparametric Density Estimation
Son, Jung-Hwan ; Kim, Seoung-Bum ;
Journal of Korean Institute of Industrial Engineers, volume 38, issue 3, 2012, Pages 191~197
DOI : 10.7232/JKIIE.2012.38.3.191
One-class classification (OCC) is one of the recent growing areas in data mining and pattern recognition. In the present study we examine a k-nearest neighbors data description (kNNDD) algorithm, one of the OCC algorithms widely used. In particular, we propose to use nonparametric estimation methods to determine the threshold of the kNNDD algorithm. A simulation study has been conducted to explore the characteristics of the proposed approach and compare it with the existing approach that determines the threshold. The results demonstrate the usefulness and flexibility of the proposed approach.
A Comparison of Parameter Design Methods for Multiple Performance Characteristics
Soh, Woo-Jin ; Yum, Bong-Jin ;
Journal of Korean Institute of Industrial Engineers, volume 38, issue 3, 2012, Pages 198~207
DOI : 10.7232/JKIIE.2012.38.3.198
In product or process parameter design, the case of multiple performance characteristics appears more commonly than that of a single characteristic. Numerous methods have been developed to deal with such multi-characteristic parameter design (MCPD) problems. Among these, this paper considers three representative methods, which are respectively based on the desirability function (DF), grey relational analysis (GRA), and principal component analysis (PCA). These three methods are then used to solve the MCPD problems in ten case studies reported in the literature. The performance of each method is evaluated for various combinations of its algorithmic parameters and alternatives. Relative performances of the three methods are then compared in terms of the significance of a design parameter and the overall performance value corresponding to the compromise optimal design condition identified by each method. Although no method is significantly inferior to others for the data sets considered, the GRA-based and PCA-based methods perform slightly better than the DF-based method. Besides, for the PCA-based method, the compromise optimal design condition depends much on which alternative is adopted while, for the GRA-based method, it is almost independent of the algorithmic parameter, and therefore, the difficulty involved in selecting an appropriate algorithmic parameter value can be alleviated.
A Study on the Forecasting of the Number of End of Life Vehicles in Korea using Markov Chain
Lee, Eun-A ; Choi, Hoe-Ryeon ; Lee, Hong-Chul ;
Journal of Korean Institute of Industrial Engineers, volume 38, issue 3, 2012, Pages 208~219
DOI : 10.7232/JKIIE.2012.38.3.208
As the number of end-of-life vehicles (ELVs) has kept increasing, the management of ELV has also become one of the academic research focuses and European Union recently adopted the directive on ELVs. For the stakeholders has become a principle agent of dealing with all about ELVs, it is relevant investment decision to set up and to decide high-cost ELVs entity locations and to forecast future ELVs' amount in advance. In this paper, transition probability matrixes between months are made by using Markov Chain and the number of ELVs is predicted with them. This study will perform a great role as a fundamental material in Korea where just started having interests about recycling resources and studies related to the topic. Moreover, the forecasting method developed for this research can be adopted for other enhancements in different but comparable situations.
A Method of Hole Pass-Through Evaluation for EDM Drilling
Lee, Cheol-Soo ; Choi, In-Hugh ; Heo, Eun-Young ; Kim, Jong-Min ;
Journal of Korean Institute of Industrial Engineers, volume 38, issue 3, 2012, Pages 220~226
DOI : 10.7232/JKIIE.2012.38.3.220
The Electric discharge machining (EDM) process is used to minimize the difference between designed feature and machined feature while the most workpiece is removed through the cutting processes. The tiny-deep hole machining and perpendicular wall machining in mold and die are good applications of EDM. Among EDM equipment, the super drill uses the hollowed electrode to eliminate the debris which causes the second discharge with the electrode and degrades the machining quality. Through the hollow, the high pressured discharge oil is supplied to remove the debris together with the spindle rotation. The thin-hollow electrode tends to easily wear out compared to the sold die-sinking electrode and its wear rate is might not allowed to monitor in real time during discharging. Up to now, the wear amount is measured by off line method, which leads machining time to increase because the hole pass-through moment can be check by visual (manually) with the extra tool path. Therefore, this study suggests the attractive method to evaluate the hole pass-through moment in which the gap voltage and z-axis encoder pulse are monitored to predict the moment. The commercial super drill is used to validate the proposed method and the experiment is carried out.
Assignment and Analysis of New Postcode using Geographic Data
Lee, Jeong-Hun ; Eom, Bo-Yun ; Kim, In-Soo ; Lee, Seong-Joon ;
Journal of Korean Institute of Industrial Engineers, volume 38, issue 3, 2012, Pages 227~236
DOI : 10.7232/JKIIE.2012.38.3.227
New 5-digit zone code (new postcode) will replace the current 6-digit postcode which has been used for postal automation in 2014. New postcode will be used for processing various works to distinguish location and area in the entire country. For example, it new postcode will be used to denote different administration areas, firefighting and police jurisdiction, weather forecast areas, emergency medical facility areas, social welfare institution areas, election districts, school districts, statistical areas, courier and delivery business areas, and etc. Therefore, the relevant authorities must be cosider for the feasibility and applicability of assigning the new postcode. In postal service, postal process will be affected a lot by new postcode because a postcode has been related with delivery area of a postman. Therefore, we propose assignment scheme for new postcode which will impact less to postal process. Then, we present how we used geographic data for efficient assignment and analysis of the results.