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Kazunori Hokao
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Civil Engineering, Building, Construction & Architecture Engineering Transportation

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Journal : Lowland Technology International

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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.
NUMERICAL RESEARCH ON BUILDING VENTILATION SPACE IN THE LAYOUTS OF RESIDENTIAL AREA Xiaoyu Ying; Wei Zhu; Kazunori Hokao
Lowland Technology International Vol 16 No 2, Dec (2014)
Publisher : International Association of Lowland Technology

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Building density in a master plan directly affects the outdoor physical environmental quality in residential area. Inappropriate design of a layout may cause impact on external comfort, such as lack of air movement. To tackle this problem, a dimensional variable, named as ventilation space was defined to feature the building density in a master plan. It consists of the gable space and fore-and-aft space. The Reynolds averaged equations and the renormalization group (RNG) κ-ε turbulence model was used to simulate the wind condition in some typical layouts under the weather condition in Hangzhou, China. The simulated wind conditions were assessed using the criteria, the wind speed ratio at some key locations on pedestrian level. The effects of the ventilation space on the air movement were discussed and an optimal space was derived for each of the modeled layouts. The set of results were expected to be used as a rule of thumb by architects and planners in master planning stage.
APPLYING THE IMAGES CITY VALUE TO IMPROVE THE IDENTITY OF WUALAI’S LOWLAND COMMUNITY IN THAILAND Umpiga Shummadtayar; Kazunori Hokao; Pawinee Iamtrakul
Lowland Technology International Vol 14 No 1, June (2012)
Publisher : International Association of Lowland Technology

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Each of developing communities is interested in basic improvement and sustainable development plan as especially for ‘lowland environmental’, ‘community identity’ and ‘social value’. This paper clear to recognize and create value that impress people in community and visitor in which the space syntax theory that the urban area can be represented as a matrix of connected spaces. There were explained to the physical problems; the historical part and perception of a city image and improving the image of community identity, environment and social value. Particularly, the resident perception on damage of the city could be forming of image and creating social networks with life satisfaction or community living. Based on physical environment and network functional related to develop the design guideline, suitable model and policy framework. To concludes by reach to a greater understanding of city image and discovers how to quantify its importance for each particular case study in term of ‘identity’, ‘structure’ and ‘meaning’. Moreover, this information can support decision-makers to policies plan by prioritizing certain aspects depending on the sense of place by sample groups. These suitable model, though to the methodological proposal idea can be extrapolated to other cities, as a process for measuring city identity image.
EVALUATION ON EXTENT CHANGE AND FUTURE DEVELOPMENT OF URBAN LAND USE USING GIS TECHNOLOGY DongJie GUAN; XueRu ZHANG; HaiFeng Li; Takuro INOHAE; Tadashi NAGAIE; Kazunori HOKAO
Lowland Technology International Vol 14 No 1, June (2012)
Publisher : International Association of Lowland Technology

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Based on four phases of land use patterns obtained in 1976, 1987, 1997 and 2005 with integrating spatial technology of geographic information system(GIS), this paper studied the dynamic change and transformation of various land use types in Fukuoka, Japan. Firstly, the characteristics of quantitative and spatial change of land use in the past 29 years were described according to spatial distribution maps, and then changing of land use extent was evaluated by a dynamic change model. The results indicate that the grade value of land use extent was situated between 2 and 4, showing that the land use extent has been transferring from extensive type to urban use type; additionally, change amount and change rate of land use extent were both greater than 0, thus, the land use extent has been situated at a developing stage. Finally, a transfer matrix of Markov was applied to analyze the transferring process of each land use type and to forecast the tendency of future land use change. The forecasting results reveal that area of urban land will continually keep rising at a gradually decreasing speed. Therefore, it will be a long process for land use extent to reach to the urbanization level.
Co-Authors Dongjie Guan HaiFeng Li Pawinee Iamtrakul Tadashi NAGAIE Takuro INOHAE Umpiga Shummadtayar Wei Zhu Weici Su Weijun Gao Xiaosong Lin Xiaoyu Ying XueRu ZHANG