This study is an exploratory study to investigate the possibility of a new DSBMF combining BMC, which is a rigid type among BMF, and CLD, which is a flexible type. We first looked at the definition and characteristics of BM concept, BMF type, and service, and examined the literature on two new areas, namely, prior studies on new BMs that reflect characteristics of services and prior studies that incorporate system thinking into BMs Respectively. Through this, SBM core factors and DBMF constituent factors are summarized and SBMC is derived based on them. After identifying the critical variables for each derived SBMC component and describing their relationship as CLD, we finally proposed a DSBMF that combines SBMC and CLD.

The purpose of this study is to investigate the effect of wage increases on market survivability in the closed market of a single commodity using the system dynamics methodology. As a result of analyzing the market by creating 5 scenarios by dividing the wage increase rate into 1, 3, 5, 7, 9% per year, it can be seen that the rise of wages of the workers leads to the collapse of the market. If the wage growth rate is 1%, the market has survived 195 months, but if it is 3%, it will decrease to 104 months, and if 9%, it will be 65 months. In addition, the market survival rate was 51 months as a result of applying the wage increase rate of 16.4% in 2018. The higher the wage growth rate, the shorter the survivability of the market. This indicates that the increase in wages does not necessarily increase demand, and that survival of such a market requires factors such as productivity improvement, cost reduction, and import and export. Although the research model is simple, the feedback loop is effective in analyzing the system, and it is necessary to expand the system dynamics methodology in the macroeconomic analysis methodology in the future.

This study began at the end of the 1990s due to the increase in the flow of foreigners in Korea. This started with the implementation of the foreign industrial trainee system in order to supplement the manpower needed for the harsh industrial field. On the other hand, in the rural areas, marriage problems without spouses of the bachelor 'As a remedy to solve this problem, marriage with Southeast Asian women spread illegally throughout rural areas.
The influx of foreigners and their settlement have also brought their values together, resulting in constant conflicts with existing values in Korean society, leading to cultural conflicts. They also existed as social prejudices and social weaknesses. This specially shaped multicultural society in Korea has begun without preparation and has created many social problems. In addition, the number of foreign marriage immigrant women and migrant workers rapidly increased in a certain period of Korea, and a multicultural society was formed. The increase in multicultural marriage has become a natural phenomenon, and after a certain period of time, it soon becomes a multicultural divorce.
The purpose of this study is to analyze causal and cyclical dynamics of causes and structures of multicultural divorces, and to identify the increase and decrease of multicultural divorces through the feedback structure of multicultural divorces.

The purpose of this study is to identify causal relationships among variables affecting the health of young adults living alone using system thinking approach, and further to identify effective policies for their health promotion. Focus group interviews were conducted to identify health problems and health behaviors in the lifestyle of 12 participants. The interaction of components that influence health promotion behavior was identified using system thinking approach in the context of a health ecosystem. As a result of the causal loop diagram analysis, the following policy tasks can be derived. The health problems of young people should not be interpreted as phenomena at the individual level. It needs to be considered as a potential problem that can affect the quality of life of the whole society. At the social and economic level, the health level of young adults living alone should be considered as a phenomenon that can be mutually influenced by other factors. Therefore, policy interventions require an approach from a community or national ecosystem perspective.

A system dynamics model is developed to be used for the policy analysis of disease control project. The model simulated the past history with RSQ>99%.
One of the major intervene actions of the Governmental disease control is to isolate suspected infected people. It was speculated that the coverage of isolation had been increased slowly and reached to perfect point after 50 days since the first patient. This results in the increase of infection by letting more infected persons hang around freely.
Three scenario analysis shows that the number of infected persons could be reduced by isolating more people in earlier stage. Thus this model can show strategic decisions for infection control. But its usage will be limited in National level and only for infection by contacts.

When a radioactive release accident occurs the nuclear power plant, public evacuation is considered as a measure to protect safely the residents living within Emergency Planning Zone(EPZ). In this study, projected evacuation times for the resident public living in the areas out to 10 km from the Hanbit NPP in Jeollanado province were estimated. The public evacuation time is categorized into preparation time and travel time, respectively. Parameters that are related to both times were derived and the individual numerical values determined based on the field data around the specific power plant and previous research results. In the analysis, POWERSHIM code based on the system dynamics was used to conduct the simulation analysis on 440 scenarios, which are combinations of the evacuation paths, utilization rates of individual owners vehicle, and weather conditions. From the analysis result, in estimating the public evacuation time, the most important factor is an effect from the traffic congestion and related parameters are derived as the utilization rates of the vehicles and weather conditions. With 50.5 percent of individual owners' vehicle utilization rate, the average time estimated for the public evacuation was shown to be 217 minutes.

This study aims to exploring the changing factors and analysing the feedback structure of the Number of Corporations in Regions. A corporation is a person who has been given the status of acting ability by law. There are several kinds of corporations according to civil law such as foundation corporation, founding corporation, profit corporation and non-profit corporation in korea. This study explored dominant factors and feedback structures to explain the Changing the Number of Corporations in Regional Systems. Through the Systems thinking approach this study developed a causal-loop diagrams to diagnosis Reinforcing and Balancing feedback structures and explored the BOT of Changing the Number of Corporations in Regions. The main finding of this study is that the number of corporations in the region will decrease rapidly in the future due to the operation of various vicious feedback structures.