| During the Tenth Five-Year Plan for National Economic and Social Development, 0.5 billion square meter aging houses in Chinese urban and town areas has been reconstructed, and living conditions of nearly 50 million households have been improved. Majority of these aging housing was settled in old urban residential area, and the resettlement scale was equivalent to the immigration workload of over 100 projects as the Three Gorges Project. In recent years, the frequent "stubborn nail" phenomena urge the society to reach the consensus that "The essence of success of old urban residential area renewal project is to reflect aspirations and interests of the public". Relationship between project and society is considered the key which affects the ultimate success of the project. Concerning the West-East Gas Pipeline project, the South-North Water Diversion Project and the urban infrastructure projects, enginieering sociological problems have never been emphasized than at the present time. A new discipline - engineering sociology is developing. In this paper, intersectional field of engineering and sociology is chosen as the breakthrough point. As a preliminary analysis of engineering sociology, this paper discusses the relationship between engineering and public, socio-cultural, social structure, social networks, lifestyle, economy level, and environment quality, and studies the impact of public participation guidance on renewal project.Old urban residential area renewal, composed of a series of specific renewal projects, is the eternal theme of urban management. These renewal projects are aimed to achieve sustainable development for both the local area and the holistic urban system. Renewal projects appeal for participation of all social groups and citizens. It is necessary to explore old urban residential area renewal management theory which effectively guides public participation during the life cycle of project and advances the mechanism of "Government conducting, Expert guideing, Residents participating, Company investing".Based on outputs of two national scientific research projects and cooperation with related government administration of old urban area, this paper discusses the life cycle guidance of public participation which meet the development require of renewal project managenment during harmonious society construction. At the beginning, the paper studies relevant theories, including sustainable development, engineering sociology, modern urban management and renewal, complex system and evolution, and partnering etc., and sorts out research and practices of public participation in renewal projects home and abroad. On this basis, the main work of the dissertation is summarized as following:Firstly evolution of public participation in old urban residential area renewal projects is analyzed. The history of urban residential area is divided into five development stages according to participation characteristic and social-economic background, which points out the trend of life cycle public participation. Based on the analysis of three types of old urban residential area as the stable system and four types of renewal projects as the unstable system, the meaning of participation in renewal projects is explained with the relationship between the system life of old urban and renewal project life cycle. With the background of old urban residential area development process since 1949, evolution between three layers is exacted and four stages of evolution about self-organization in layer are analyzed. The dynamic mechanism and three basic powers of public participation in renewal project are discussed.Secondly the objective system of renewal project in old urban residential area is studies. Project community including resident, enterprise, government, and expert as well as partnering platform in rewal projects are put forward. Social embeddedness of renewal project is discussed based on resource system of participant. Objective system of renewal project is set up with combination with government function objectives, resident resource system optiminized objectives and other main participant's objective. The function of participation degree of renewal project community is advanced with three key factors which are participant's willing, participation behavior and participation effect.Thirdly behavior system of resident's participation in renewal projects of old urban residential area is established. Five hierarchy of residents need for renewal project based on Maslow's theory and three stages of a renewal project based on life cycly theory are analyzed. Nine kinds of participation behavior mode are proposed. Three dimension framework of public participation behavior is set up combinating time, space, needs and resource system. Life cycle participation for resident are organized. The parmeters and utilization method of optimizing their resource system are standardized. Three organizational forms about resident participation including decision-making appraisal by residents, planning consultation for residents, and post appraisal resident involved are designed, which are demonstrated with two renwal project cases in decision-making stage and operating stage.Fourthly public participation in old urban residential area is modeled and simulated and security system of renewal projects is designed. Based on questionnaire information analyse with Logistic function in SPSS sofeware the critical factors about resident participation behavior are distinguished, next participation behavior of resident and other participant class are trained with BP neural network, then initialization and interaction of environment-rules-agents is designed with the background of Chaozhou, the simulation result are consistent with reality development. With above analysis, the security system of resident participation in renewal project is designed with some suggestion referring to extension analysis theory.Fifthly the conclusion is made. The major conclusions and the following research focus are pointed out.
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