• Korean System Dynamics Review
• /
• v.8 no.2
• /
• pp.175-190
• /
• 2007

Stock market volatility largely depends on firms' value and growth opportunities. However, with the globalization of world economy, the effect of the synchronization in major countries is gaining its importance. Also, domestically, the business cycle and cash market of the country are additional factors needed to be considered. The main purpose of this research is to attest the application and usefulness of System Dynamics as a general stock market forecasting tool. Throughout this research, System Dynamics suggests a conceptual model for forecasting a KOSPI(Korea Composite Stock Price Index), taking the factors of the composite stock price indexes in traditional researches. In conclusion of this research, System Dynamics was proved to bean appropriate model for forecasting the volatility and direction of a stock market as a whole. With its timely adaptability, System Dynamic overcomes the limit of traditional statistic models.

• The Transactions of the Korean Institute of Electrical Engineers A
• /
• v.55 no.2
• /
• pp.85-93
• /
• 2006

Since the SMP(System Marginal Price) is a vital factor to the market participants who intend to maximize the their profit and to the ISO(Independent System Operator) who wish to operate the electricity market in a stable sense, the short-term marginal price forecasting should be performed correctly. In an electricity market the short-term market price affects considerably the short-term trading between the market entities. Therefore, the exact forecasting of SMP can influence on the profit of market participants. This paper presents a new methodology for a day-ahead SMP forecasting using ARIMA(Autoregressive Integrated Moving Average) model based on the time-series method. And also the correction algorithm is proposed to minimize the forecasting error in order to improve the efficiency and accuracy of the SMP forecasting. To show the efficiency and effectiveness of the proposed method, the case studies are performed using historical data of SMP in 2004 published by KPX(Korea Power Exchange).

• The Journal of Fisheries Business Administration
• /
• v.39 no.1
• /
• pp.17-42
• /
• 2008

This study tried to build a structure model for the Korean flatfish aquaculture market by a system dynamics approach. A pool of several factors to influence the market structure was built. In addition, several reasonable factors related to the flatfish aquaculture market were selected to construct the causal loop diagram (CLD). Then the related stock/flow diagrams of the causal loop diagrams were constructed. This study had been forecasting a production price and supply, demand, and consumption volume for the flatfish market by a monthly basis, and then made some validation to the forecasting. Finally, four governmental policies such as import, storage, reduction of input, and demand control were tentatively evaluated by the created model. As a result, the facts that the demand control policy is most effective, and import and storage policies are moderately effective were found.

• The Journal of Fisheries Business Administration
• /
• v.25 no.1
• /
• pp.85-109
• /
• 1994

Recently, it has become a matter of importance concerning a distribution system of the fisheries products in our day, Especially, this paper disregards the fact of changes in demand and distribution system for fisheries products under the period of the high economic growth in Japan. The commercial capital of fisheries products has been modernized by the development of the public market place. The distribution system of fisheries products will rather play an important role than now. In this state, this study is to introduce the development of fish market theroy and attempts to explan the market trends in the production in Japan.

• International Commerce and Information Review
• /
• v.6 no.3
• /
• pp.101-119
• /
• 2004

Since the early 1980's there has been explosive growth in the trading of financial derivatives, particularly in the OTC(over-the-counter) derivatives market. While the market has exploded in term; of growth, much of this activity is still conducted over the phone or fax. Currently, over 2,083 trillion Korean Wons are spent during 2003 by the OTC derivatives industry. XML provides an excellent framework for representing these highly structured products. FpML is the emerging XML-based tool for enabling e-Business in the OTC derivatives market. This paper discusses the application of FpML in building electronic platform designed to promote efficiencies for this market and propose the framework for STP(Straight Transaction Processing) system for OTC derivatives processing which can solve the problems with manual operations.

• Journal of Korean Society for Quality Management
• /
• v.40 no.2
• /
• pp.211-218
• /
• 2012

Over the last two decades, many information system researchers have developed the variables of information system using the measurement of user satisfaction. In context, this research developed the measurement of user satisfaction in smartphone application market and compared the difference of user satisfaction factors between Adroid market and App store. The results indicated that satisfaction of App store was more than that of Adroid market. The information system and customer-oriented factors of App store were higher than that of Adroid market.

• Proceedings of the KIEE Conference
• /
• 2007.11b
• /
• pp.258-260
• /
• 2007

MAS based market simulator has attracted the attentions of people who are interested in using or developing electricity market simulator. MAS based approach makes it possible to model each market participant's strategic behaviors. Traditional market simulators have used optimization formulation to model market operation, which has been used since vertically integrated system. Optimization mainly uses cost minimization or welfare maximization of entire system. Therefore it is somehow difficult to model the independently strategic behaviors of market participants. MAS is one of AI technology based on distributed intelligence which makes it possible to model independently acting entities in competitive market. This paper proposes the method to model strategic participants in electricity market based on MAS.

• Proceedings of the KIEE Conference
• /
• 2007.11b
• /
• pp.255-257
• /
• 2007

Korea electricity market consists of two payment systems, capacity and energy. Capacity payments are given to the generators according to its hourly availability considering hourly and seasonal weighting factors. Energy payments are settled at the marginal generation cost based on generator variable cost. In 2007, base load energy market is closed and single capacity payment system is begun to apply in electricity market. In this revised market rule, energy price cap for base load generators is newly introduced. We analyze impact of market rule revision in 2007 on base load generators and suggest improvement scheme to enforce market system in this study.

• The Journal of Information Technology and Database
• /
• v.6 no.2
• /
• pp.115-130
• /
• 1999

The price structure of housing market varies depending upon market price policy rather than low or high price policy because of IMF. The object of this study is to develop an analysis system for analyzing housing market and its demand. The analysis system consists of four major categories: macro index analysis, market decision analysis, housing market analysis, and consumer analysis. We model each category by using a variety of techniques such as generalized linear model, categorical analysis, bubble analysis, drill-down analysis, price sensitivity meter analysis, optimum price index analysis, profit index measurement analysis, correspondence analysis, conjoint analysis, and multidimensional scaling analysis. Seoul apartment data is analyzed to demonstrate the practical usefulness of the system.

• The Transactions of the Korean Institute of Electrical Engineers A
• /
• v.52 no.7
• /
• pp.381-386
• /
• 2003

To provide a specified power quality under electric market system is becoming an important issue for customers and utility company. However, there is no realistic infra-structure to design a power system for the specified power quality. Present electric market is operating under the economic point of view. The low power price could be attractive, but the effect of low price could result the lower power quality for the long time and threat power system security. This paper presents a model which conceptualize the dynamic power quality control mechanism to minimize total cost of a society which is affected electric power quality. This model aims to produce a basic infra-structure to balance cost and quality under the electric market system.