• Korean System Dynamics Review
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• v.9 no.1
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• pp.125-141
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• 2008

It is very difficult to predict future demand/supply, price for resources with acceptable accuracy using regression analysis. We try to use system dynamics to forecast the demand/supply and price for nickel. Nickel is very expensive mineral resource used for stainless production or other industrial production like battery, alloy making. Recent nickel price trend showed non-linear pattern and we anticipated the system dynamic method will catch this non-linear pattern better than the regression analysis. Our model has been calibrated for the past 6 year quarterly data (2002-2007) and tested for next 5 year quarterly data(2008-2012). The results were acceptable and showed higher accuracy than the results obtained from the regression analysis. And we ran the simulations for scenarios made by possible future changes in demand or supply related variables. This simulations implied some meaningful price change patterns.

• Journal of Family Resource Management and Policy Review
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• v.4 no.1
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• pp.69-78
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• 2000

The aim of this study was to clarify the social labor experience of women especially female slaves and to review the family problems of them in the Yi Dynasty. For the purpose, this study made use of literature reviews. It was founded that female slaves in the Yi Dynasty had participated in social labor between the ages 10 and 60 though they were forced to work against their will. The slaves whether they belonged to government or landowners were entrusted with hard work or were bound to pay cotton fabrics. So they contributed to maintain national economy and to accumulate private wealth but they sometimes suffered their family to be dissolved by the demand of owners.

• Journal of Family Resource Management and Policy Review
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• v.14 no.2
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• pp.59-77
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• 2010

This research evaluated the present condition of the family voluntary service group and healthy family campaign, which was being carried out as one of the healthy family culture businesses of the Healthy Family-Support Center. Furthermore, it suggests ways to improve these business activities. Research centered on the analysis of business documents created between December 2006 and November 2007. The results were as follows. First, the family voluntary service group and the healthy family campaign business in the Center must be able to have specificity or individuality. Second, the Center must manage the scale, frequency, and contents of the businesses systematically. Third, the businesses must concern themselves with family life in general, make better use of the advisory committee or steering committee, concern variety of business performing system.

• Journal of Family Resource Management and Policy Review
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• v.11 no.2
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• pp.85-93
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• 2007

The purpose of this study was to assess gender differences in the quantity and quality of leisure time. It uses time diary for a nationally representative sample of Koreans(10 years old over) collected in 2004 by KNSO. This time use surveys provide information about a primary activity and a secondary activity (that is simultaneous activity accompanying the primary activity). The results was that married women experience less of leisure time and more contaminated leisure time by a secondary activity(especially household labor) than married men. This research presents that men and women have different quantity and quality of leisure time, and gender discrepancies persist in the experience of leisure time.

• Korea Journal of Hospital Management
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• v.16 no.4
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• pp.161-182
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• 2011

In today's competitive dental markets, it is of paramount importance to improve service quality and at the same time to use scarce resource efficiently. In this study, we present appointment policies and scheduling rules for private dental clinics to reduce the waiting time of patients and to increase the revenue by utilizing resource more effectively. This study validates the proposed appointment policies and scheduling rules based on simulation models. We show that the bottleneck-based appointment policy is the most effective among appointment policies, followed by the multiple-block appointment one. The shortest processing time among scheduling rules contributes most to the performance of the appointment system.

• Korean Institute of Interior Design Journal
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• no.27
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• pp.86-95
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• 2001

Many theorists argued that firms should obtain and their unique resources for sustained competitive advantage under the competitive business environment. Knowledge has been recognized as one of key strategic resource, which is scare, valuable and reasonably durable in both KM literature and practice. however, firms usually face difficulties in identifying which knowledge is a core strategic resource, so that they are wasting time and managerial energies by managing all of knowledge in an organization. This article is composed as follows, the definition of knowledge-management as the norm of the work process, the status arrangement of the knowledge-management system and the old information system of architecture and interior design, the knowledge-management system set-up method and model, and the knowledge creativity and the application culture make-up method. In particular, the present study explains the method that is applied to the use of the knowledge-management system and the application it.

• Proceedings of the Korea Information Processing Society Conference
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• 2016.04a
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• pp.83-85
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• 2016

C-RAN (Cloud Radio Access Network) structure is the most popular approach for 5G stander, it employs CoMP (Coordinated Multiple Points Transmission/Reception) to enhance frequency utilization and increase throughput for cell-edge users. C-RAN mainly includes two parts: baseband units (BBU) and remote radio heads (RRH). In this paper we propose a new resource block allocation (spectrum allocation) scheme by the permutation and combination of BBUs, and we also use the CoMP (Coordinated Multiple Points Transmission/Reception) technique according to the different environment to improve the spectrum utilization and reduce resource waste in different environment. The simulation results expound that the scheme significantly enhances throughput and improves the spectrum utilization.

• Journal of Family Resource Management and Policy Review
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• v.10 no.3
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• pp.79-96
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• 2006

The purposes of this study were to analyze the types of leisure activities and level of leisure satisfaction with practice of a five-day workweek, and examined the relationship between leisure satisfaction and job satisfaction. The data were based on the questionnaire with 264 working employee residing in Seoul. The results indicated that the most frequently participating activities were sports, use of media, loaming activities in order. And there were no significant differences in types of leisure activities between 5 day working employees and 6 day working employees. Secondly, general level of leisure satisfaction was the highest when participating religious activities. Thirdly, it was found that only social satisfaction was positively related to job satisfaction, and social satisfaction influenced job satisfaction. Further discussions and implications were discussed.

• Journal of the Korea Society of Computer and Information
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• v.23 no.12
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• pp.195-201
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• 2018

This study is attempted to demonstrate the structure of the influencing factors on the performance of services of knowledge based service firms. In the model presented, the structure is that service performance in knowledge-based services are affected by the strategic utilization of knowledge resources and service orientation factors of the service organization. And the service performance are also affected in which the systemization of service processes and customer satisfaction play a mediating role. As an analysis result of examining 148 practitioners engaged in the knowledge service industry, it is necessary to increase the satisfaction of external customers in order to improve service performance in a knowledge-based service organizations. This can be achieved by increasing the satisfaction of internal customers. In addition, for this structure to be successful, the service production process to be provided to the customer must be enhanced. The service production process has been found to be an important factor influencing the internal customer satisfaction and service delivery process, especially in the use of knowledge resource, and customer oriented service among service orientation factors.

• Journal of the Korea Organic Resources Recycling Association
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• v.25 no.3
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• pp.23-34
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• 2017

This study is conducted to find out the problem of the public food waste recycling facility and its improvement. By using an operation status analysis, an economic analysis was done to check up on its feasibility in comparison with an investment in the food waste recycling facility currently in use, thereby proposing the possible alternatives to prevent the national budgets form wasting with witless construction of the new facilities. As a result, it is considered necessary to come up with an effective plan for establishing the public resource facility, strengthen criteria for government subsidies being used up on the public resource facility, and enact an independent law of the food waste.