The purpose of this paper is to review relationship between spatial characteristics of compact city and urban sustainabiliy from system dynamics perspective using causal loop analysis. It has been argued that spatial characteristics of compact city, high population density and mixed land use, are positively related to urban sustainability. However, research results that are not consistent with pros of compact city argument have been accumulated too. It is especially true when spatial characteristics of compact city are examined with regard to each dimension of sustainablility: economic, social, and environmental sustainability. Reviewing each dimension of sustainability with regard to spatial characteristics based on causal loop analysis, this paper provides more clear understanding on relationship between compact city and sustainability. Also this paper provides a base for system dynamics simulation for future study.

Green growth policy is essentially a dilemmatic policy, because it has two fundamental but conflicting values, environment vs. economy. In this paper, how the dilemma in the green growth policy is perceived by the policy maker is analyzed. Two approach is taken to analyze the dilemma perception by the policy maker, the president of Korea. The first approach is an analysis of policy statements by the president, and the second approach is a cognitive map analysis of his statements. This paper discusses the different findings between two approach and points out the potential power of the cognitive map in finding policy dilemmas.

Today, the logistics industry has played a critical role in national economy activities. The low cost and high efficiency of the logistics industry are meaningful in the improvement of national competitiveness and the logistics industry. However, efficiency of logistics is lower than that of the United States and Japan since most quantities are processed in road transportation in Korea. With regard to this, existing studies expected a saving of social and environmental costs due to a decrease of road transportation as well as improvement of logistics productivity due to bulk transportation through activation of rail and costal transport. For the expectation, the existing multimodal transport systems should be improved first. Therefore it aimed to develop scenario-based simulation models of multimodal transport systems for decision makers in charge of improvement in the logistics area. For model development, this study utilized Thinking Process and System Dynamics(TP-SD) methodology.

This paper examines a mechanism of the Electronic Territory Expansion and the Information-oriented Society. Especially, a strategy for the territory development based on intelligence is suggested. The strategy is divided into a strategy for the domestic electronic territory and a plan for the global electronic territory. To examine the strategy and the plan, this paper is using the causal map analysis based on the System Thinking Approach. The causal map of the mechanism is characterized by a positive feedback loop. The paper has concluded that it is important to make the positive loops as a virtuous circle. It means that when a society dominates the advantageous position firstly in the field of intelligent and electronic territory, the competitiveness can grow in arithmetical progression.

To reduce costs in general process, product quality degradation or lack of services are appeared. To improve these problems, dramatical solution of 'Freeconomics (Free+Economics) are discussed. Freconomics means, producers provide their products and services free of charge but they get customer's interests and reputations. Based on these customer's interests and reputations, producers generate profits with other services or related products. In this paper, we discuss about Green IT strategic plan with the management technique of Freeconomics. Green IT is called as Next-Generation growth engine to develop economy, so every country and industry hopes to develop it. With Freeconomcs, customers could get more quickly and much better use the Green IT products. So it is expected to spread of Green IT with Freeconomics as industry, country and customers are all satisfied.

This study introduces the system dynamics model that simulate total operational availability when 10 equipments made of 3 major components are serviced under the constrains of the maintenance capacity level and the number of spare parts. This simulation is designed on the base of reliability engineering concept so failures of components happens with the rule of engineering factors like the mean time between failure(MTBF) of component and the next failure time of one component is effected by the conditions of other components. We analysed availability of 10 equipments under 121 constrains and executed multiple regression analysis with the simulation result. The analysis provide the managerial insight in the service fields with operation many equipments.