Integrated Network Transport Simulator to Evaluate Transport Policy for Reduction of Carbon Dioxide Emission

Not only purchase of electric vehicle but also modal shift from vehicle traffic should be promoted for reduction of greenhouse gas emission. Effect of transport policies for reduction of carbon dioxide emission should be estimated properly with simulating vehicle traffic on a target road network. For the purpose, it is aimed that the integrated network transport simulator is developed based on the multi-agent simulation model to evaluate transport policies for reduction of CO2 emission in the present study. The proposed integrated network transport simulator consists of the vehicle traffic simulation model, the travel mode choice model and the vehicle choice model. CO2 emission is estimated with the vehicle traffic simulation model. The decision processes of the vehicle choice and the travel mode choice are respectively described considering with the social interaction. It is assumed that not only the conformity effect but also non-conformity effect should be considered as the social influence. Therefore, hierarchical Bayesian modeling is applied to describe the vehicle choice and the travel mode choice considering with heterogeneity and social interaction. The model parameters are estimated with the database of questionnaire survey in a local city of Japan and the proposed simulator is applied to estimate the effect of the carbon tax. The reduction of carbon dioxide emission as the effect of the policies is estimated using the proposed integrated network transport simulator. From the view point of CO2 emission, it can be found that the effect of reducing CO2 emissions with only the carbon tax is limited since the spread of low emission vehicles is hindered and the rate of sustainable transport mode goes down, although the EV will be popularized

膜に閉じ込められた液晶系に対するアンカリングの効果

Tohoku University今井正幸課

Multi-agent Simulation for Promoting Clean Energy Vehicles from the Perspective of Concern for the Environment and Local Interactions

Clean energy vehicles (CEVs) such as EV or PHV should be promoted for the reduction of greenhouse gas emissions in the transportation sector. However, it is important to note that social interactions affect the promotion of CEVs. Therefore, a multiagent simulation system for promoting CEVs has been developed in the present study from the perspective of not only concern for the environment but also for local interaction processes in terms of social conformity. Intention of holding CEV is described with the database of the questionnaire survey about purchasing vehicles. The social network of the artificial society is described as a small-world network model. The time series changes of the numbers of clean energy vehicles and the volume of greenhouse gas emissions are estimated by the proposed multiagent simulation. Finally, it can be concluded that the proposed multiagent simulation with local interaction is useful for promoting the planning of CEVs

Instanton-noninstanton transition in nonintegrable tunneling processes: A renormalized perturbation approach

The instanton-noninstanton (I-NI) transition in the tunneling process, which has been numerically observed in classically nonintegrable quantum maps, can be described by a perturbation theory based on an integrable Hamiltonian renormalized so as to incorporate the integrable part of the map. The renormalized perturbation theory is successfully applied to the two quantum maps, the H\'enon and standard maps. In spite of different nature of tunneling in the two systems, the I-NI transition exhibits very common characteristics. In particular, the manifestation of I-NI transition is obviously explained by a remarkable quenching of the renormalized transition matrix element. The enhancement of tunneling probability after the transition can be understood as a sudden change of the tunneling mechanism from the instanton to quite a different mechanism supported by classical flows just outside of the stable-unstable manifolds of the saddle on the top of the potential barrier.Comment: 6 pages, 4 figure

A Study of Economical Machining : An Analysis of the Maximum-Profit Cutting Speed

Apart from the conventional theory of the minimum-cost or maximum-production cutting speed, a new concept of the machining conditions for maximizing the profit for the manufacturing enterprise was presented