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Research Topis

In this page, you can find some research topics and their abstract that were done by students or related projects in Deguchi Lab.

Project Research Topics

Doctor Thesis Topics

Study on Urban Simulation Environment with Layer Structure Information(2008 Ichikawa)

[Abstract] To simulate a social phenomenon that will be occured in the real city, it is required to constact a virtual city model to represent the social phenomenon. In this research, we focused on spaces where humans act in their daily activities in the real world such as houses, schools, shops, offices and so on. We developed the environment that enables to construct the virtual city which these kinds of spaces are represented. We used the layer structure information that the real world has for this virtual city and this information enables to create the virtual city with human activity spaces. And more, this environment support base and module system. A base is the virtual city model and a module is a modle of social phonomena. By plugging in a module to the base, the social simulation model will be constructed.

Image of the Virtual City with Layer Structure Image of the Virtual City and Modules

Architecture Design of Agent Based Social Simulation(Tanuma 2007)

[Abstract] This paper discusses the architecture design for developing the social simulation for domain experts. First of all, "spot" that corresponded to the environment besides the "agent" that corresponded to the person is introduced as a component of a social model. The agent's behavior can be resolved to an action on the spot and a voluntary action according to the state of the spot, and the interaction between agents can be described autonomously. This indirect interaction is mathematically formulated as "Agent / Spot Dynamical System", and some basic theorems are proved (left figure). The concepts for implementation named "stage" and "role" are introduced based on this basic concept, and a simulation environment SOARS (Spot Oriented Agent Role Simulator) is developed. The remarkable feature of the SOARS is to be able to develop a complex social model modularly by decomposing into several partial models. We developped an epidemic model in a city and proved the effectiveness of the modeling architecture (right figure).

Agent / Spot Dynamical System Modular Structure of City Epidemic Model

Master Thesis Topics

Evaluation of the isolation policy on the contagious disease that cannot be precared by vaccination(Onishi 2003)

[Abstract] Isolation is often very effective against new infectious diseases. We studied the effects of several isolation scenarios by simulating them on an agent-based model (AB model). AB modeling is better for describing heterogeneous agents and social structures than existing logistic modeling and percolation modeling. We assume a piece of squared paper-like society with sections representing 2 offices, 2 schools, a hospital and lots of houses, as has been proposed by Epstein et al. Let 2 types of agents, characterized as adults and children, move around on the sheet. Infection occurs within each section while agents can move over sections. Once agents are infected, contagiousness increase and decrease according to disease stages, i.e. the incubation stage, the suspecting stage, the defined stage, and so on. Under these conditions we evaluated the results of simulations of 3 policies, (1) no isolation, (2) isolation of only patients, and (3) that of patients and their families (potential infected agents). Our results shows that only the last is effective against the spread.

Number of Infected Agents

Bachelor Thesis Topics

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