Introducing a new concept of virtual information element, we constructed a new model being appropriate for analyzing questionnaires.
Using K-L information number, (VIE, I) diagram was analyzed.
This was applied for the analysis of automobile transportation problems in Hokkaido.

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The capital-land substitution in urban housing production is a key parameter in explanation of spatial structure of the housing market in long run. The purpose of this paper is to investigate invariant properties of capital-land substitution under taste changes, which bring any kinds of shifts in housing production functions. In order to identify both taste-change effects and changes in capital-land substitution under taste changes, one must know what type of the production technology is separately measurable from the taste-change effects. When the impacts of the taste changes on production function are transformed to taste-change effects, the production function is said to be “holothetic” under a given type of taste change. Lie groups can manifest the potential patterns of taste changes. A systematic way for analyzing holotheticity of production function and measuring patterns of taste changes will be presented by probing invariant properties of housing production function under Lie groups transformations.

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Prediction of trip generation and attraction in urban area is the first step in the Four Step Method of travel demand forecasting. The purpose of this study is to develop simplified trip generation and attraction models which require small sample size for model building. Multiple regression was applied to person trip surveys of ten metropolitan areas of differing sizes and characteristics. The following conclusions were drawn: 1) trip generation and attraction models are highly transferable among different cities 2) simplified trip generation and attraction models are adaptable to different cities.

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Although enormous volume of soil is excavated and discharged from construction works, disposal sites for the surplus soil decrease in urban area year by year. With this point as background, it is desirable to establish soil recycling system, that is effective utilization of soil between construction sites where surplus soil is discharged and other sites where soil is used as material for embankment, landfill, etc. In this study, three models for soil allocation are proposed corresponding to certainty of input data. (1) Model I is based on presupposition that all the relevant data are known deterministically. (2) Model II determines proper soil allocation in consideration of adjustment of working time on condition that input data for start time of each construction work has uncertainty. (3) Model III determines proper matches of construction works from the viewpoint of effective utilization of surplus soil.

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This paper proposes a new method to estimate upper and lower bounds of reliability between node pairs in road networks. The conventional calculation methods using all the minimal path sets and cut sets are impractical for a large system since the path sets and cut sets include a large number of elements. The proposed method is quite useful since it requires only partial minimal path sets and cut sets. An efficient way of selection of the paths and cuts is investigated, and an algorithm for a Boolean manipulation is developed. Also a numerical example of small size network is executed to examine the validity of the method.

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This study is an attempt to develop a forecasting method of population attributes by zone in a metropolitan area. Random utility models are used to formulate each event of household related to individual's life cycle and residential relocations. As the forecasting method, a micro-simulation technique, which can chase individuals' behaviours and can provide flexible aggregation, is employed. The validity test and policy tests proved the advantages of the model, compared with existing models.

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This paper falls within that category of planning thought in which the stock of knowledge and associated R & D activities are regarded as endogenous public goods. Our tenet is that knowledge is made available to firms by way of exchange processes on a spatial network of knowledge. We derive a production function for the knowledge level of a nodal firm in terms of the size of its knowledge handling labour force and its accessibility to the complete stock of knowledge in all nodes by means of networks of telecommunication and transportation. A Nash equilibrium of knowledge production over a network is formulated and the resulting spatial equilibrium model of knowledge production activities is derived. A logit-like share equation is the basic foundation of our analytical framework. A simple numerical example is used to illustrate how the system may possess multiple equilibrium states depending on the parametric combinations of the spatial equilibrium model.

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This report describes the results of a simulation study which was conducted to evaluate the effectiveness of traffic operations for the Sekigahara section of the Meishin Expressway under snowy and icy roadway surface conditions. The Expressway Bottleneck Simulation Model, which was already developed, was used to compute the total travel time during such operations as chain regulation, detour guidance and speed control using snow plough trucks. The effectiveness of each operation was evaluated in terms of the total travel time. The results of the study indicate the direction for the effective winter time traffic operation on the Expressway clearly.

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In this paper, a land-use simulation model based on the concept of bid price is proposed. This model has been developed with the aim of applying it to an area where land use is complex and land prices play an important role in the formation of land use, as happens in urban areas in Japan. The future land-use pattern is estimated by simulating a bidding competition among land-use activities in each hypothetical lot. The model is applied to the Osaka Prefectural Area and its validity is examined.

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This paper introduces a procedure for plotting partial residuals for multinomial logit models. This provides a method for graphical determination of utility functions of disaggregate logit models which offers significant advantages over the established “black box” method. An empirical example is developed in the context of revealed dwelling type choices in the Nagoya metropolitan area which shows the usefulness of the method.

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