In the coastal landfill sites, the evaluation methods, construction technologies and long-term maintenance which ensure environmental feasibility of cutoff wall using steel pipe sheet piles with the jointed sections (SPSPs cutoff wall) are complicated both experimentally and analytically. In this study, the effect of SPSPs cutoff walls in coastal landfill site on the containment of toxic substance was evaluated by seepage and advection/dispersion analysis, and the relevance was examined with respect to performance and installation condition of SPSPs cutoff walls and environmental feasibility. In addition, the improvement of environmental feasibility and construction technology for SPSPs cutoff walls was proposed by the application of the H j ointed SPSPs with H-H joints which is one of the originally developed SPSPs. Furthermore, the long-term maintenance of water interception performance of H-jointed SPSPs with H-H joints cutoff walls demonstrate was proposed with the management repair technique. From a series of result, the hydraulic conductivity of SPSPs cutoff walls required for environmental preservation of coastal landfill sites of 1×10-⁸ cm/s order is clarified from infiltration and advection variance analysis. In addition, it is also clarified experimentally that H j ointed SPSPs with H-H joints can demonstrate the hydraulic conductivity of the 1×10^-8cm/s order. The features in maintenance and management repair of the H-jointed SPSPs with H-H joints for the conventional steel pipe sheet pile are shown.

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Large-scale public projects are evaluated by their B/C ratio, the social benefits divided by the costs. Although both benefits and costs are uncertain, the uncertainty is not typically taken into account. We model the uncertainties of both benefits and costs and propose a new concept of “probability of fulfillment, ” the probability that the benefits exceed the costs even after a certain period of time. We further propose a new project-evaluation method under uncertainty by deriving the relationship between the ex-ante criterion for B/C and the probability of fulfillment.

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New transportation system (People Mover) has been regarded as one of the most attractive topics in recent urban and regional development. This article is the study on the plan of constructing High Speed Surface Transportation (HSST), as a new magnetic levitation type of transit, in Shiga Prefecture. To plan a new transit in local area needs comprehensive consideration, not only from technical and financial aspects, but also from its social influence. The study tries to explore the relationship among people, transportation and related facilities from social psychological aspect and communication with residents to make efficient and effective planning. It tests the fit of the theory of planned behavior (TPB) by applying the Structure Equation Model (SEM) with the information from the residents in Otsu and Kusatsu City. Perceived behavior control, as a component of TPB, is found to be closely related to the intention. Therefore, the desired facility can help increase the acceptance greatly. The plan of constructing public sports center nearby one station of the new line is discussed together by optimizing the utility function. Regarding these, the article also considers the possible application of the hybrid planning system. This study can be a meaningful experiment of introducing some psychological theory intotransportation planning.

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In the basin of Monobe river, one of the major rivers in Kochi prefecture in Japan, various environmental problems are becoming serious, and they cause decrease offish catches in the river. Among these problems, water shortage is a fundamental problem because it often worsens other problems such as muddy water and eutrophication.
The ultimate goal of this study is, thus, to solve the water shortage problem in the river basin by improving efficiency of water use for agriculture sector, which consumes the largest volume of water in the whole sectors.
Through interviews with various stakeholders, it is found that reducing water use amount for agriculture is accompanied by various difficulty and risks.First, daily water use fluctuates, and it is peaked in the weekend because the number of part-time farmers has been increasing. Yearly water use also jumps when each farmer switches the vegetable field into the rice paddy. Second, the rule of distributing water to each farmer is determined based on historical practices. Third, water use for agriculture sector has other functions of cultivating ground water and diluting wastewater discharged from each household. Fourth, most of farmers hardly feel necessity of improving efficiency of water use. Many residents are not aware of seriousness of the water shortage problem in the river either. Thus, reducing water use for agriculture would require not only farmers but also residents to cooperate each other to deal with the above difficulty and risks.
It is difficult to build the above cooperation for a short time. In this paper, therefore, measures to cooperation and partnership among related parties are finally discussed from the viewpoints of project management.

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Recently, the problem with sustaining local railroads has been actualized as deregulation concerning transportation advances. Moreover, this problem has a big influence on the local administration that faces budget deficit and the resident life that confronts an aging population. The number of railroad users is decreasing because the ratio of car user's is very high in the local city now, so it is doubtful whether the local rail transportation can continue. It goes without saying that the local railroad is one of the most important forms of transportation for the region, but the sizeable subsidy to the railway is a large encumbrance for the local government. Furthermore, the accountability is needed from the local government for such a subsidy delivery in recent years, so numeric grounds are necessary to obtain residents consent. For such a reason, in this research users benefits are estimated using time-series demand curve.

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This paper provides an attempt to incorporate the new approach to social and environmental considerations in Japan's overseas development assistance projects. It is based on work carried out in the course of the feasibility study on the construction of the Padma Bridge in the People's Republic of Bangladesh. The framework is intended to provide a comprehensive view of the issues associated with social impact assessment for large infrastructure projects such as the proposed Padma Bridge, yet flexible enough for adaptation to the needs of other similar projects for managing impact assessment. The paper also contains results of the preliminary engineering designs with regard to acquisition of land and other assets, including displacement and relocation of the affected households. An estimated 3, 150 households will be displaced due to the construction of the bridge and associated facilities. In addition, 5, 000 households will be affected by loss of agricultural land. The framework and guidelines established an entitlement matrix designed to cover compensation for lost assets and restore or enhance the livelihoods of all categories of affected people. The impact assessment was integrated into the planning and design processes. As a result, the discussion of the key dimensions of the framework, including the approach and methodology of the study, focused on interpreting the results and eliciting lessons learned during the process.

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Shortening or delay of construction project will affect the social cost indirectly as well as the project cost itself. We made integrated evaluation on the period and schedule of dam construction project.
We classified items for evaluation into three categories, namely project efficiency of benefit by cost, indirect influence on local economy, safety and environment etc. and project execution circumstances and each item was scored and rated by 5 ranks with the weight. A model dam was set up and field investigation was carried out to verify this evaluation method and its validity was confirmed.

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Flood disasters have occurred many times in our country as well as in the worldlike the big flood caused by hurricane Katrina, in 2005. The excessive loss of lives and assets is not acceptable. A risk aversion management technique for thesetypes of flood disasters is needed.
In this study, the loss of assets like household goods and agricultural goods are analysed using the event tree analysis (ETA) provided rain fall flood return period of 100 year for the ASAKAWA River in northern NAGANO city. In addition to this, the action plan of citizens of Nagano city to manage the risks from disaster of floods is also analysed by the fault tree analysis (FTA). From this study, the estimated monetary total loss caused from a flood is so much that NAGANO citizens in the ASAKAWA River basin may not be able to hedge all risks by theirown effort. Therefore, some help and instruction schemes from the local government to share risks should be employed.

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The objectives of this paper are to analyze roles or function of third party ina process of consensus building in infrastructure developments. Recently, questions need to infrastructure developments called social concern, the need of citizen participation and consensus building have been recognized gradually.However, it isn't easy to find common interests among stakeholders, it was focused on methodology for consensus by the third party's support. It was applied to “Incentive management” which an author developed as a technical method to drives some incentives involving dynamically condition changes. Results support the feasibility of the proper support by the third party as a solution of the dilemma and availability of technical tools facilitating risk communication.

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It is well known that encounter of unforeseeable geological condition such as fault and fractured zones or water inrushing in a tunnel construction project leads to substantial cost overrun and delay of construction term. From such a view point, in this paper, a methodology associated with evaluation of cost variation of tunnel construction projects in discontinuous rock mass was presented. The concept of risk, which was ordinary applied to financial engineering, was adopted to the evaluation of cost variation. And the evaluation method such as risk-curve and Value at Risk was adopted. In detail, this paper proposed a method to combine geo-statistics model and discrete fracture network model. In this methodology, geo-statistics model was employed to decide the support pattern, and discrete fracture network model, which was often used for seepage analysis in discontinuous media, was employed to conduct evaluation of discharge along excavated a tunnel. Furthermore, the proposed methodology was applied to evaluate cost variation risk of tunnel excavation by Tunnel Boring Machine, TBM. Finally, results made it clear that the proposed methodology is very useful to clarify dominant risk factors involved in information on in-situ discontinuous rock mass.

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Within the Local Governments public facility Asset Management (AM) of today, the AM's Life Cycle Cost (LCC) model is becoming a mainstream feature. However, from this time forward, it is necessary to create within AM, a New Public Management (NPM) model which maximizes the value of facilities with regards to the true affluence and city image desired by our citizens.In order to pursue this goal, Kyushu University teachers and Fukuoka City Government employees made Fukuoka City a case subject and held meetings to discuss their opinions on the matter.
Through analyzing data and opinions, this research both examined and suggested what kind of AM should be promoted by Fukuoka City in the future.
Maximizing the asset value of Fukuoka City's AM requires the transition into a system which manages each stage of planning, construction and maintenance of public facilities, and also into a framework which consists of six different types of Management (Maintenance, Construction, Finance, Risk, Value and Environment). Furthermore, its realization depends on the implementation of Organization Management and the strengthening of collaboration between citizens, scholars and specialists.

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The business process of infrastructure facility maintenance should be integrated correspondingly to the practice of asset management, as well as the maintenance plan should be rationalized more. This study aims to build a methodology of business process reengineering (BPR) for the infrastructure facility maintenance. For this purpose, it firstly investigates the real business process among the maintenance section of a highway corporation and related sections and agents, and secondly describes a series of business process of maintenance by means of unified modeling language, that is, UML, generally available for system description. Lastly it tries to (re) design the business process on the UML model according to the notion of asset management of infrastructure facility.

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Recently, a real-time earthquake information system has been developed for railway companies, education facilities, manufacturing businesses, and in other public and private sectors. The system provides an alarm and various security controls to facilitate a person's safety a few seconds before an earthquake occurrence. The risk mitigation of such a real-time earthquakeinformation system for the construction field is discussed through a questionnaire survey of construction managers. According to the results of the survey, the system is expected to decrease certain risks. We suggest the following points to be important: 1. A discussion for countermeasures until earthquake occurrence is required. 2. The cost-benefit balance of the system is debatable.

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A big problem occurred during tunnel construction is unexpected increase of construction cost caused by discrepancy of formation rock conditions between those predicted by the geological investigations before the construction and those found at the actual excavation. One of the reasons of the discrepancy is uncertainty in evaluating formation rock conditions at the investigation stage. Although the uncertainty may be caused by insufficient geological investigations due to limited budget, the investigation budget tends to be cut, recently, as well as construction budget reduction. This situation may be caused by the reason that one cannot explain well how much uncertainty is expected in the geological investigations.
In order to increase the value of geological investigations, it is important to consider evaluation of financial risk for unexpected cost increase due to the geological condition discrepancy. In this paper, the authors study and discuss on evaluating uncertainty in seismic refraction survey, which is one of the geophysical exploration methods usually used for the tunnel investigations especially in mountainous area.

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The objective of this research is to advance risk management and develop practicality of such management in order to reduce industrial accidents in the field of construction which have been long said high risk industries for accident. Taking recent diversification and complexity in the field of construction into account, methodology to pick up potential and latent risks and harm factors in each site and/or factory shall be established and then the most suitable technique for risk management shall be applied, after considering industry's features in this respect.
The result of research will be compiled and published as an official proposal to relevant authorities and related industries, so that the risk management may be forwarded further. In this study, we try to specify hazard factor to establish the best suited methodof risk management of labor accident at small and medium enterprise in order to reduce labor accident further more.
Outline of this study, according to statistic analysis of labor accident and interview for construction company and construction organization, we try to specify hazard factor in detail and investigate emphasis counter measure.

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NPM is in part penetrating into evolution of the public works. This paper discusses advantages and issues when NPM is applied to the management of existing public service procurements and third party management in future. The third party management is more popular in Europe and U.S.A. Keywords like facilitator, workshop and outreach briefing function to cross-check the purchaser's fairness in determining options of projects, programs and/or policies, while keywords like peer review, check engineer, partnering, DRB, arbitrator, mediator and inspector represent mechanism or organization to monitor optimized implementation of the Project.

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It is a well-known fact that Kunimichi Kitagaki appointed Sakuro Tanabe as a construction site supervisor of the BIWAKO Canal project and the construction which began in 1885 (Meiji 18), was completed in 1890 (Meiji 23). Almost all the remaining reports and documents are limited to an explanation of the building process of the BIWAKO Canal, and the management process which describes the decision making process of the then policy makers has not yet been reviewed. Bearing this in mind, this research conducts an economic impact analysis of the BIWAKO Canal and attempts to reveal the aims of the then policy makers, design plans, and the construction processes, which made it possible for the actual project to be completed. Input-output analysis is used for the analysis; however, as the last input-output analysis was created in 1960 (Showa 35), which is many years after the completion of the BIWAKO Canal (1890), the 1960's input-output table cannot be directly applied to the analysis. The RAS process is applied to the 1960's input-output table to forecast the input-output table at the time of 1890 when the BIWAKO Canal was completed. The forecasted input-output table allows quantitatative economic impact analysis and shows the economic changes that occurred due to the completion of the BIWAKO Canal. This research focuses on the interrelationships between the economic changes and the financial plan and the construction process selected by the then policy makers. As a result, the entire management process undertaken for the BIWAKO Canal project is compared with that of current social infrastructure projects in Japan. Finally, the future management direction of Japan's infrastructure is discussed.

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Improvement of a bid contract system is emergency and an important problem from the viewpoint of both to raise adding to transparency of a process and reliability for a public works project.The prefectural office of Nagano introduced general competitive bidding and planned improvement of a system and achieved constant result However, it means that excessive price competition occurs for problems. The method that can reflect a technical element in the future of a bid system should be extended. The main methods are “A method to add a technical element and capability to bidding price”, “A bid method to examine technical suggestion”, and “A proposal system by an open call for participants”. Many methods are thought about elsewhere. The trial of various bid methods began, and it is not yet established enough.
In this study, I examine a policy and a review of a system spreading those methods.

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In China, public services have been delivered to citizens at low prices and subsidized by government to a great extent since 1949.Government directly invested, constructed and operated public infrastructure. However, the single source of government investment could not satisfy the increasing demand on infrastructure projects.Moreover, the direct government investment and management of public utilities resulted in poor construction performance.In addition, the monopolistic operation of state-owned companies caused low operation efficiency, striking resources waste, and heavy fiscal burden due to the lack of specific obligation division between government and state company.
From 1994, the Chinese government began to attract foreign companies to participate in the investment, construction and operation of infrastructure projects mainly through BOT method.Since the China's entry into the WTO, the domestic private companies have been encouraged to invest and operate infrastructure projects, too.However, many privately financed infrastructure projects still encountered difficulty originated from excessive or inadequate government obligation.
The proper obligation division between government and private company becomes the key issue in infrastructure project planning.The authors aim to propose a proper project planning model which shall fit all kinds of infrastructure projects with various fund origins.The proposed planning model shall include a comprehensive planning framework and a six-step planning process.In particular, the financial indicator, i.e.self-reimbursement ratio is introduced for correct appraisal of project feasibility and proper obligation division between government and project company.

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In Japan, whose population has increased rapidly in recent about 100 years, but will decrease in future, it is demanded to aim at sustainable development in accord with nature restoring the water and material circulation, eco-system and landscape once lost in the basin/watershed scale. This study shows the necessity of regeneration scenario for the basin/watershed arranging the way to recognize them. It also analyses the progress/practical cases and plans in Japan and abroad based on their form/scale and purpose, and shows the model of the scenario for the urban/watershed regeneration in accord with nature taking those conditions into consideration.

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When the construction enterprise that is involved in the social infrastructure maintenance business divides the company for the management rationalization and the construction business is moved to a new company, being able to continue construction and the business operation related to the infrastructure smoothly is a social mission.
This thesis shows the problem and the solution that faces when the corporate separation is executed. It has aimed to become the indicator of management to which the procedure described in this thesis is effective.

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The education and research on civil engineering history play an important role in comprehending a real meaning of civil engineering and a character of civil engineer. Many civil engineers may have few experiences to study the civil engineering history. Practical difficulties are encountered for them to implementing the education and study on civil engineering history, which involve selection of theme, treatment of materials, verification of hypothesis, conclusion and so forth.
In 2003, the periodical seminars started at Otaru Port and Harbour Office of Hokkaido Regional Development Bureau where excellent engineering works and his spirit of Dr. Isami Hiroi have been investigated, using reports, papers and books written by him. Dr. Isami Hiroi was the first man who designed and supervised the construction of the modern breakwater at Otaru Harbour in Japan. He has significantly contributed to disseminate research and development of modern harbour technology in Japan.
This paper describes the essential factors and the study methodology of civil engineering history resulting from experiences and discussions provided by the seminars. As a result, it is expected that the main thrust of teaching programs on civil engineering technology and morals is prerequisite for the study on civil engineering history.

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Because the government decreases public investments, it becomes difficult for construction companies to manage their business. Under such situation, we need to know what kind of problem the construction companies have and also what kind of the human resources they need.
In this paper, we took the above-mentioned, for the small and medium size construction companies which could support construction industry of local district, implemented the questionnaire about the problem on their management and consciousness investigation about the human resources that are required for their operations. As a result of having analyzed these, for the problem that companies are facing “to improve the cost control”, “capacity building for young staff” and “to increase the business amount” became higher. In addition, “to have an ability of using PC” and “a cost control mind” became high-ranking other than “to keep a challenging mind” and “a sense of responsibility” to find to a person of university graduate. On the other hand, as a result of the quantification theory II about the ability/the qualification which companies require a person of university graduate to have, “knowledge of the current events” and “an engineer ethic” are reacted strong.

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The Case Method is said to be one of the most effective way to acquire a practicalcapability. Using actual “case” happened before, participants discuss about the problem occurred in the story. Using audio-visual case, several case discussions were held. Through these discussions, new method of knowledge transfer was found. When experienced and few experienced managers make a discussion together, specific management skills can be revealed from experienced managers and non-skilled engineers can acquire these skills. As a tool to extract specific skills from experienced managers, audio-visual case is very effective, because audio-visual case can provide specific examples of management problems simultaneously to participants who watch case and they could consider these problems at the same time. And many techniques of discussion coordinator were found through observing professional discussion coordinators. These techniques are found to be useful to make case discussion more effective.

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The society and economic situations of today's our country have been changing largely and quickly against the background of economical confusion. If a city to wants to maintain good environment to correspond flexibly to such a changing world in order to correspond flexibly, it is required to change the structure of the present urban function radically. Especially in the local city with tight finance, the limited financial resource shall be made efficient and effective use of, and it is important to take in the intention to city planning from the stage of the urban-function maintenance design.
Therefore, the discussion about the composition of the urban function in city planning, i.e., the study about a future urban-function-structure system, is very useful, and a discussion on methodology is added about the system design in the land use design plan stage for efficient and effective achievement of the objective future vision of the city. The study tries to satisfy the needs or urban development by making qualitative and quantitative distribution of the present urban function for the new city maintenance, and creating a desirable urban-function-structure system. As an evaluation tool, the mathematical planning model is built to perform an urban-function-structural design effectively and efficiently in the future, and practical discussion is made based on the Koga City of Shiga to test the validity of this study.

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Japan's official development assistance (ODA) has been providing the major resources for socio-economic development in many developing countries. Japan's contribution in hard infrastructure development has been dominating other soft development like human resources and technology development in recipient countries. Recipient countries especially low-income developing countries are ever dependent on developed countries for human resources and technology for their domestic infrastructure development. In addition, the insulated project execution system of the Japanese grant aid projccts has influenced the international competitiveness of Japanese contractors and consultants to expand overseas business. The new scheme developed in this study, based on the Nepalese and Cambodian contexts, integrates the perspectives of recipients as well as donors. Strengthening universities and technology development system in developing countries, and using alternative project delivery system in ODA project execution have been recommended to address recipients' as well as donors' industries issues and to improve the efficiency and efficacy of ODA. The new ODA scheme has been started to implement in Cambodia and it has enabled to produce a new product for Cambodian rehabilitation.

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Recently, it has become more and more remarkable and serious that the CBD of local cities are declining and hollowing out. In this case, it is quite necessary to make the redevelopment in the CBD according to the needs of consumers and the times. Therefore, to create the charming city corresponding to the changing times, it is expected to perform comprehensive projects of construction of CBD and activation of commercial industry. The methods of introducing the new urban function and realizing the high-level service environment are very effective aiming at central city area activation efficiently and effectively.
The article discusses the propose of the comprehensive planning of construction integrated commercial park, which combines the public park and other commercial facilities, in order to create a distinguishing and charming atmosphere from other cities and activate the CBD for the subject city. Moreover, regarding the difficulties of realizing planning on the individual shop level in the commercial accumulation area, the management system incorporating systematization and cooperation organization of each store has been also considered. And it describes the methodology of applying mathematical formulation to model the planning problem about land use and facility construction for the CBD activation.
Furthermore, as a method of progressing the comprehensive development, the new management system is proposed, regarding local residents as the main part, using intermediate juristic person system from the acquisition of land to the construction and operation.

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Shotcrete is applied in many locations on highways with cut slopes. Most of them have more than 30 years in service, and deteriorations such as cracking and bulging occurred frequently. The numbers of slopes which need preventive maintenance are so many that the effective way has been desired to decide the time of repair. However, it is difficult to establish uniformly a standard of repair of surface separation and back cavitations for shotcrete slopes because each slope has its complicated conditions of the slope geology and the natural environment. Therefore, attention is focused on the cause of deterioration of the performance of shotcrete slopes. In this study, we suggest the decrease in cohesion of the ground caused the deterioration. The evaluation of we propose life-cycle-cost (LCC) estimation methodology based on yearly probability of failure using the surface failure model for shotcreting slopes. The LCC value would be an important index for establishing the methodology of repair planning, and it would be quite useful to explain the effectiveness of preventive maintenance during the healthier condition of structure.

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This paper is based on a report of the study subcommittee for contaminated sites restoration (Chairperson Toshiki Shimoike, Taku Mimura vice- chairman) in Construction Management Committee.
A contaminated sites restoration is pushed forward nationwide by conclusion of Soil Contamination Countermeasures Law that aimed at solution of the issue of soil I groundwater contamination and the regulations to be related to.When it is not defined by law, not to mention a case defined by law, investigation, a plan, measures are carried out in accordance with law. However, law shows a definition of pollution and a frame of the contaminated sites restoration, in a real contaminated sites restoration, the various problems that cannot support occur. It is it with an important problem of the person concerned that a risk to assume a toxic substance in particular origin sends this business to prevention of surfacing.
I extracted a risk of a contaminated sites restoration on proposing the management technique and analyzed how a risk in a contaminated sites restoration could prevent surfacing here if I did it about influence when I surfaced.

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In in-service section the maintenance and repair works as well as safety-securing check activities are being done on dairy basis whereby certain restriction affecting the normal smooth traffic flow however inevitably accompanies in most cases.
This will do exert remarkable influences on the convenience of road users and residents living along there.
The aforesaid works and activities are therefore to be conducted based on very precise and effective scheduling and resultanalysis, simultaneously taking care of the circumstances on other parties concerned, which can virtually be achieved taking excessive workload and time. This is the current status.
We Nagoya Expressway Public Corporation have been trying to improve the mentioned status, making it systematized by means of computer network technology, where the enhancement of business performance and the reduction of workload be expected as the result of standardized procedures with unified and timely managements.
This report gives an outline of the system with deliberation on the effect obtained there eventually.

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This study is a first case that we apply the choice method training to private civil engineers. The porpose of this method is to extend image of a disaster situation and our action. And we can use this method to improve the ability of judgement at the emergency response.
On this report, we verify Yes-No training, we explain the difference of senses between public administration and private civil engineers.
We should attempt to be systematization of experts, to play an important part in adisaster situation.

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This paper presents the process how to select designated procurement items for green purchase.
The Japanese Government introduced a Green Purchase System from 2001. The purpose of this system is to promote the spread of Eco-Friendly Goods through the priority purchase of Eco-Friendly Goods by the government. Articles given preferential consideration by the government are called designated procurement items.
As for an environment field to deal with, global warming, waste, resources, a hazardous chemical substance, a biodiversity and others are wide. Because of this, the methodology to evaluate these environment elements comprehensively isn't being developed at present. When it is specified to the Special designated purchase article, the State and Other Entities must supply this list of articles in principle. A Special designated purchase article is finally decided by the Cabinet meeting. Because of this, before specifying it, a high explanation and transparency are looked for. A political subject occurs to evaluate clearly and significantly items just developed with uncertain evaluation methodology.

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“Developing a well balanced country” has been the important policy for nation wide development activities in Japan.
We have been attempted various kind of methods of development such as 1.utilizing central government policy 2.introducing external economy 3.activating internal economy. However, these traditional methods dose work in a certain district but doesn't work in so-called “underdeveloped district (UDD)”
UDD are located in far away from center of Japan, in another ward, peripheral prefecture of Japan, which are Kochi, Akita, Tokushima, Kagoshima, Wakayama, Shimane, Iwate, Nagasaki, Miyazaki and so on.
To be an autonomous entity is strongly requested for UDD in an era of fiscal reform activities. Therefore, effective method for establishing an autonomous economy in UDD is strongly desired.
I developed and proposed new method for it and try to apply it to Koch, a typical UDD, in order to show the effectiveness of the method for establishing an autonomous economy.
Eventually I would like to show the possibility that this method can be used in other UDDs as an effective method to establish autonomous economy.

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To contribute to Watershed/Urban regeneration in accord with nature in the Tokyo Metropolitan Area that includes plural basins, we grasped the change and the state of water and green spaces as environmental infrastructure, and then examined their practical use in city and national land planning.It has been shown that green masses and some rivers/waterways still exist;these can form the framework of the city, although a considerable amount of environmental infrastructure has been lost over the last century.Moreover, it has been indicated that for the preservation/restoration of environmental infrastructure in the Tokyo Metropolitan Area, a considerable number of rivers and paddy fields that have not been discussed yet should be recognized as the natural environment to be preserved/regenerated;for example, those in the Naka/Ayase River basin.

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