The value of artifacts emerges in society, which is structured by people with diverse values. The Socio-Artifactology division targets the process of the value co-creation through the interaction between artifacts and society. Therefore, we aim to establish a methodology of “socio-technologization,” which means the construction of valuable artifacts in society. In addition, the research of the co-creative decision making among various stakeholders is carried out.

New space-borne technology opens revolution of human-earth science and technology (Prof. Rokugawa)

Newly developed interferometric synthetic aperture radar, InSAR in short, enables us to detect a subtle earth surface movement under 1 cm precision.
This technology has various potentials for 1) monitoring natural disaster, 2) development of new atmospheric science, 3) application of oil/gas or water resources and 4) managing the old infrastructures. All of these require us, human in general, to face the new era of human- earth relations.
Attached figures show the hazardous events in Kyushu Island observed by InSAR observation from space over 700-800 km. The advantage of this map is the fact that this is based on the actual movements of earth surface.

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Cumulative deformation map of Whole Kyushu Island between approximately 2006-2010 [left]

Wanizuka, Miyazaki pref., landslide frequently occurred area [right]

Integration of predictive methods for material degradation and a new non-destructive inspection technique (Assoc. Prof. Okita)

For safety operation of a complicated and huge artifact, it is necessary to estimate the degradation of structural materials and to develop an inspection technique that enables to detect the degradation. We are currently building up predictive models for degradation in structural materials with the latest computational science. We are also innovating a new non-destructive inspection technique for detecting microstructural evolution. We will expand our study into a maintenance filed and a method to a prompt application of these latest techniques. By integrating these techniques, we will make contributions to efficient and safety operation of artifacts in their whole-life.

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Development of a non-destructive inspection technique to detect microstructural evolution [left]

A predictive method for material degradation by molecular simulations [right]

Advanced simulation technology for the mature society(Assoc. Prof. Yamada)

Our society has become mature after the impressive period of high economic growth. In the mature society, we attach importance to spiritual happiness and repose while the mass production and consumption are out of the trend of economy and also life style. Engineers in the mature society have to preserve this society safe. For this purpose our laboratory starts to conduct research on i) simulation technology of important structures on supercomputers and ii) network dynamics study for disaster mitigation. Our goal is the design of the mature society to be strong in disaster.

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K computer [left]

Traffic network [right]

Integrating modeling and monitoring of ground deformation for sustainable geosphere development (Project Assistant Prof. Aichi)

Resources exploitation from subsurface or waste disposal into subsurface is vital for industrial activity. It provides much benefit to human societies as well as harmful effects to environment. Both the techniques for sustainable development under minimized environmental effects and the social schemes for balanced decision making are necessary. We are integrating ground deformation modeling and monitoring techniques to estimate and evaluate artificial effects in subsurface. Also, we try to develop a co-creative scheme for social consensus and decision making for the geosphere development based on the information from recent advances in science and technology.

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Numerical simulation based development and examination of image processing techniques to abstract land subsidence from InSAR monitoring data sets [left]

Co-creative scheme for geosphere development based on the integration of modeling and monitoring technologies [right]

Aiming at realization of artifact simulator
- multi-agent based simulation of knowledge propagation in organizations - (Prof. Okuda)

In this study, we propose an agent model based on SECI model for simulating knowledge propagation in organizations. In this model, complexity of knowledge is expressed as bit-tag, and worker-agent and knowledge manager agent are introduced. Some parametric study is performed for bit-tag length, internalization rates and communication pattern of worker-agent, and evaluate acquirement of knowledge to verify the present simulation model. Furthermore, scenario simulation is implemented with respect to employment periods of worker-agent and the effectiveness of multi-agent model is shown from qualitative evaluation of knowledge variation corresponding to joining and leaving organization.

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Multi-agent based simulation of knowledge pagation [left]

Time histories of the average rate of common bits of worker-agents [right]

Value-Synthetic Mechanism of Artifacts in Societies Using Economic Experiments (Assoc. Prof. Nishino)

We have been studying on topics of how artifacts create value in societies, especially focusing on its interdependent mechanism among stakeholders. In recent years, people have been living confronted with complex societies where relationship among artifacts, human, and environments has become even more intertwined. Thereby, it is required to elucidate how the value of artifacts is created through interaction among them in societies, particularly in terms of constructing a theory of artifact design. For this purpose, our study adopts an approach with economic experiments that is usually used in the field of experimental economics. The approach constructs a virtual socio-economic system in a laboratory, recruits human subjects, and observes how they behave in controlled experimental environments. It means that value creation mechanism can be analyzed by a synthetic method that actually constructs a value-creating situation in a laboratory, incorporating a viewpoint of design into the methodology of economic experiments. Now we study some research issues such as value-synthetic mechanism of modularization technology in the automotive industry and platform-type product service systems in the electronics industry.

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Laboratory for economic experiments [left]

Basic models of platform-type product service systems [right]