現在、建設分野のCALSである建設CALS/ECは促進期から普及期へと推進の軸を移し、その果実を実らせつつある。しかし一方、プロジェクト個々の現状に目を転じてみると、各局面では様々な技術的な問題も散見され、「情報共有」の認識についても多分に曖昧なところがある。CALS実現のプロセスは、情報通信・共有化技術の応用と、業務の見直し (BPR: Business Process Reengineering) とを柱に進む。我が国の建設CALS/ECはいわば、既存の公共事業という枠組みの中で推進されている側面が強いが、PFI等の適用を含め、公共事業見直しに関する議論が進んでいる現在、筆者はこの枠組みに捕われず、改めて技術的な立場から情報共有のあり方、建設マネジメントとCALSとの関連について再考してみることも有用と考えた。 本論文は情報共有化の概念、枠組みについて、業務システムの構築、業務のパラダイムシフトを進めるための手段、各々を核に技術的な立場から相補的に考察することを試みたものである。
The aim of economic regulatory policy in private infrastructure development is to protect utility users while ensuring that private concessionaires have incentives to develop and operate infrastructure projects more efficiently. Setting an adequate governance by economic regulation is very important because when the regulatory control is too lax, users will have to bear the risk of higher prices. Contrarily, excessive control may cause reluctance of the private sector to participate in infrastructure development. This paper discusses three alternatives in economic regulation: Price regulation, ROR (rate of return) regulation, and No regulation. It analyzes both the incentive effects to improve efficiency and the degree of risk to which concessionaires are exposed under the different economic governance. Finally, it makes suggestion for improving economic regulation in developing countries.
For this introductory paper on the implementation of private infrastructure development methods in the People's Republic of China, the author defines three time periods:“The Beginning”-from 1987 to 1995:“The Present”-from 1995 to 1998 and “The Future”-from July 1998 onwards. “The Beginning” is characterized by arelatively small number of projects centered in the economically advanced province of Guangdong. The the field of participants is led by a small number of pioneering Hong Kong property developers. “The Present” period, from 1995 to July 1998. features a rapidly growing number of participants in the industry, with international utilities, engineering firms, and investment funds adding to the Hong Kong developers. The geographical scope of private infrastructure development in China also expands to include all of the coastal provinces. Finally, the style of project structure as well as the legal and regulatory framework for private participation in infrastructure begins to expand during thisperiod, with government bodies as well as private developers experimenting with new project structures and legislation. Finally, “The Future” looks at the direction of private participation in the development of infrastructure in China, and is based on current trends, including: increasing sophistication, growing competition and rising costs in the coastal regions; shift of central government emphasis to inland investment; establishment of new laws governing private infrastructure participation; and rapidly changing conditions in both international and domestic financial markets.
The economic growth of Guangdong province in southern China has drawn attention of various fields such as sustainable development and global environment. The corresponding infrastructure construction such as railways and highways has led to huge effects on industry structure, urbanization, and land use. Therefore, there is an urgent need to comprehensively study the interactions of infrastructure construction, economic development, land utilization, and environmental issues. In this research, first, the current situation of transportation infrastructures in Guangdong province is studied and compared with the developed countries. Then, the investment condition and financial resources of transportation infrastructure construction are investigated as well as its effects on the economical development. Numerical analyses are carried out for reflecting traffic accidents and land use due to the process in transportation service industry. Finally, a GIS-based management approach is presented for managing transportationinfrastructures with spatial visible capacity.
In this paper, the integration of geographical information system and government project administration information system based on network platform (GISGPA/NT) is presented for capturing, storing, checking, integrating, manipulating, analyzing and displaying the construction projects data related to positions on the Earth'ssurface and government administration. The system is developed for the municipal government body, which is responsible for the administration of construction projects. The scope of information processing and the type of information used in this system are discussed following the enduser identification. Then, the system structure and main functions are described in detail. Finally, the guideline and methodology of system development are presented.
This paper introduces a concept of measuring quality for engineering economic analysis to determine the best quality for construction projects. First, the quality of construction projects is defined and decomposed into component quality criteria. Next, the component quality criteria are quantified and the weights of relative importance level of each component quality criterion are determined. In this way, the value of the entire quality of construction projects can be consequently measured. Having measured the quality value, the engineering economic analysis can be applied and the optimum quality of construction projects will be determined by incremental quality value- costs ratio analysis accordingly.