• Journal of Korean Institute of Industrial Engineers
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• v.42 no.6
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• pp.377-385
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• 2016

The previous Adaptive Control of Thought-Rational (ACT-R) cognitive architecture model has a limitation in that it cannot accurately predict human visual search strategy, because time effect, one of important human cognitive features, is not considered. Thus, the present study proposes ACT-R cognitive modeling that contains the impact of time using a revised utility system in the ACT-R model. Then, the validation of the model is performed by comparing results of the model with eye-tracking experimental data and SEEV-T (SEEV-Time; SEEV model which considers time effect) model in "Where's Wally" game. The results demonstrate that the model data fit fairly well with the eye-tracking data ($R^2=0.91$) and SEEV-T model ($R^2=0.93$). Therefore, the modeling method which considers time effect using a revised utility system should be used in predicting the human visual search paradigm when the available time is limited.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.35 no.3
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• pp.225-233
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• 2012

The purpose of this study is to observe effect on a result of a business performance depending on the business scale and the success factors of quality. Verified hypothesis of the quality of success factors and business performance are conducted in order to conduct this research. The results of hypothesis testing can be summarized as follows : First, depending on the size of the company, quality of corporate success factors in the management and significant positive was verified to be in effect. Second, depending on the size of the small business companies' human resource management, product/process is significantly positive in effect and medium companies' quality information, quality of suppliers in the commercialization of technology is significantly positive in effect. Third, depending on the size of the small business companies' human resource management, product/process financial performance is significantly positive in effect and mid-sized companies, suppliers in the quality significantly positive show the influence of financial performance. The results of measurement through the size of the enterprise and the successful factors of quality impacts on business performance directly.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.2
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• pp.516-529
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• 2018

Due to the growing awareness and demand for corporate social responsibility, the corporate activities designed to make a social contribution are becoming increasingly diversified. Nonetheless, according to a periodic survey, the public has become dissatisfied with the social contribution activities of domestic corporations. The perceptions of the social contribution activities of domestic corporations and the public were found to be quite different. In this study, the Social Contribution Activities were classified into three factors, "Socio-Cultural Resource Activities", "Indirect Social Resource activities" and "Economic Resource Activities", and the effect of each factor on the inter-firm connected activities and achievements of local development were analyzed. Firstly, the "Socio-Cultural Resource Activities" and "Indirect Social Resource Activities" were shown to have a positive effect on the Inter-firm connected activities in the community. Secondly, it was found that the more active the Inter-firm connected activities were in the community, the bigger their positive effect was on the achievements of local development. Thirdly, the "Economic Resource Activities" were shown to have a positive effect on the achievement of local development. Fourthly, "Socio-Cultural Resource Activities" and "Indirect Social Resource Activities" were shown to have a positive effect on the Inter-firm connected activities and an indirect positive effect on the achievement of local development. Based on this research, we quantitatively determine the relationship between the corporate social contribution activities and performance.

• Journal of Korean Institute of Industrial Engineers
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• v.14 no.1
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• pp.91-101
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• 1988

Break-even analysis is a simple and useful tool in decisions and planning activities though its use is somewhat limited to short-term analysis. The subject is discussed in the fields of engineering economics, production management, cost and managerial accounting, finance, marketing, and so on. Conventional break-even analysis suits the case of stable price and low interest rate. In this paper, we try to overcome the limit by considering following factors, namely, time value of money, depreciation, tax, and capital gains. Also, considering learning effect, we increase applicability to a new project which raises certain changes such as a replacement of production process, an employee turnover, etc. Thus, we suggest a model which has a dynamic break-even quantity per period for the project. Furthermore, we examine the effect of inflation in break-even analysis.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.30 no.3
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• pp.135-149
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• 2007

This paper investigates the relative effect of each ISO 9001 : 2000 quality management system's requirement and business performance. The empirical tests are conducted in ISO 9001 certification companies. As a result, the $1^{st}$, it shows the requirements positively affect performance of financial. The $2^{nd}$, also it shows the requirements positively affect non-financial performance. The $3^{rd}$ also it show the non-financial performance positively effect performance of financial performance.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.38 no.1
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• pp.101-109
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• 2015

This paper suggests a procedure to define business process improvement (BPI) projects with analysis results based on the cause-and-effect chain. The procedure developed in this paper focuses on eliminating root causes of business problems resulted from abnormal events occurred in business process executions. First, we develop three criteria used to make clusters of the root causes where a cluster of root causes will be eliminated together by a BPI project defined based on the cluster. Second, we develop a method to formulate desired expectations from the BPI project. Also, we suggest a method to calculate the relative importance of the BPI projects that help a BPI organization determine priorities of them. We illustrate the procedure and the methods with some examples for the domestic mail delivery process in the postal service industry.

• The Transactions of the Korean Institute of Electrical Engineers P
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• v.53 no.3
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• pp.152-157
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• 2004

The purpose of the study was to identify the effects of LT cooperative learning and traditional competitive learning on academic achievement by the level of learning ability in industrial high school students. The results of the study were as follows; the score of posttest of the experimental low grade group was significantly higher than that of control low grade group (p<.05), and the score of posttest was significantly higher than that of pretest in the experimental low and middle grade group (p<.05). Based on these results, it was concluded that LT cooperative learning had positive effect on the enhancement of industrial high school student's academic achievement than the traditional lecture learning. Its effect on high grade students was negative, but its effect was significantly positive on both middle grade and low grade level students.

• Proceedings of the Membrane Society of Korea Conference
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• 2004.11a
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• pp.129-131
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• 2004

• Proceedings of the Materials Research Society of Korea Conference
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• 1998.08a
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• pp.128.3-128
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• 1998

• Journal of Service Research and Studies
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• v.13 no.1
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• pp.176-185
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• 2023

This study is a study to develop a model to measure the economic performance when introducing industrial safety design, which is emerging as a necessity for industrial accident prevention measures due to the increase in the industrial site nursing accident rate and the enforcement of the Serious Accident Punishment Act. To this end, studies on the concept of industrial safety management and industrial safety design and economic performance measurement in the field of industrial safety were conducted in terms of theoretical background. Based on the theoretical background, opinions on drafts of related indicators were collected through user opinion surveys, and focus group interviews and Delphi techniques were conducted with experts, and research was conducted to advance the model. In order to secure objectivity, the causal relationship between the introduction of industrial safety design, cost reduction effect, and sales increase effect was tested through regression analysis. After going through these steps, two models of economic performance measurement of industrial safety design were finally developed: a model based on the first-stage disaster loss cost reduction effect and a second-stage sales increase effect. In order to be applied to actual industrial sites, it should be able to be presented as a standard for the degree of service level agreement of industrial safety design beyond a simple checklist.