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Weijun Gao
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Civil Engineering, Building, Construction & Architecture Engineering Transportation

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DEVELOPMENT OF AN EVALUATION SYSTEM FOR PARKS IN NEIGHBORHOOD COMMUNITIES – CASE STUDY IN KITAKYUSHU CITY, JAPAN Liyang Fan; Yui Konishi; Hidetoshi Fukahori; Weijun Gao; Zhu Wang
Lowland Technology International Vol 16 No 1, June (2014)
Publisher : International Association of Lowland Technology

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Abstract

Parks are an important aspect of an ideal city. In the “neighborhood development” concept, the public park is the core of a neighborhood block, which is one of the basic components of the city. Using the neighborhood parks in Kitakyushu, Japan, as a case study, this research proposes an evaluation system for parks in urban area. First, the study uses GIS to identify each neighborhood park and define the neighborhood community. It then classifies neighborhood parks according to the land-use pattern of their communities. Next, the study develops an assessment index and used it for principal component analysis. Finally, based on the results of the analysis, the study comprehensively evaluates the community and park system in Kitakyushu city, Japan. The findings suggest that comparative evaluation between the different parks can help in understanding the characteristics and problems of existing information.
DYNAMIC EVOLVEMENT ASSESSMENT AND FORECAST OF LAND USE BASED ON GEOGRAPHIC INFORMATION SYSTEM Dongjie Guan; Xiaosong Lin; Weijun Gao; Weici Su; Kazunori Hokao
Lowland Technology International Vol 16 No 1, June (2014)
Publisher : International Association of Lowland Technology

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Based on the land use patterns in the years of 1990, 1995, 2000 and 2005 acquired with the spatial technology of geographic information system (GIS), this study takes Kitakyushu city in Japan as a case to analyze and forecast the dynamic change and transformation of various land use types. Firstly, we use the spatial distribution maps to describe the changes of area and spatial distribution of land use in the past 15 years, and then the dynamic change models are established to evaluate the changes of speed and intensity of land use. The results indicate that each land use type has changed remarkably as the urbanization, and that the land use intensity has been transferring from extensive type to intensive type. Finally, we develop a transfer matrix of Markov to track the mutual transformation processes among the land use types, and to forecast the change tendency of future land use. The forecasting results reveal that the urban land will keep increasing at a decelerated speed, and it will be a long process for land use intensity to reach to the urbanization level.
INTEGRATED ASSESSMENT OF CHP SYSTEM UNDER DIFFERENT MANAGEMENT OPTIONS FOR COOPERATIVE HOUSING BLOCK IN LOW-CARBON DEMONSTRATION COMMUNITY Liyang Fan; Weijun Gao; Zhu Wang
Lowland Technology International Vol 16 No 2, Dec (2014)
Publisher : International Association of Lowland Technology

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Abstract

As residential energy consumption increases recently, there is greater focus of the energy conservation activities in residential sector. The combined cooling, heating and power (CHP) system, a well-known distributed energy system technology, has been paid more and more attention. In this paper, the performances of typical CHP systems are investigated for a cooperative housing block (CHB), a mixed residential development pattern recently popularized in Japan. Based on the building’s energy consumption, CHP technologies have been assumed and assessed following two design and management modes, namely heat tracking mode and electricity tracking mode. In order to obtain a comprehensive understanding of the performance of the assumed CHP systems in CHB, the system is assessed under different area functional proportion (AFP) and area social age structure (ASAS, the proportion of housing styles for different age groups). It can be proved that the cooperative use of CHP system in CHB is better than individual use in the conventional housing development. In addition, the CHP system can perform better if the urban planner properly design the function formation and consider the lifestyle of residents in different ages.
Co-Authors Dongjie Guan Hidetoshi Fukahori Kazunori Hokao Liyang Fan Weici Su Xiaosong Lin Yui Konishi Zhu Wang