Remotely sensed data are capable of providing spatial and temporal information on land use land cover(LULC)over a large extent of land.The Sidoarjo District in East Java Province has recently been extensively explored...Remotely sensed data are capable of providing spatial and temporal information on land use land cover(LULC)over a large extent of land.The Sidoarjo District in East Java Province has recently been extensively explored for economic development opportunities.This paper examines the use of multi-temporal Landsat images in deriving information for LULC maps,changes of land development and natural ecosystems such as mangrove forest within particular economic reform areas.Results suggest a minimum accuracy(baseline)for LULC mapping using Landsat multispectral reflectance data of 74% for the overall accuracy(OA)and 0.70 for the kappa coefficient of agreement(kappa).On average an acceptable accuracy(OA=88% and kappa=0.86)can be achieved by integrating multispectral reflectance and green normalized difference vegetation index(GNDVI)to support vector machine classification.The economic reform in the Sidoarjo District made a significant change to LULC and mangrove distribution.From 1995 to 2015,25% of crop land and 15% of bare land changed to become built-up areas,and 8% of wetland and 22% of mangroves changed to crop land.A remarkable decrease of mangrove forest occurred in the interior land along the river systems over the whole district.Fortunately,the coastal mangroves areas saw a significant increase due to the Lumpur Sidoarjo(LUSI)-caused mud flow sediments near the estuary of the river.The impact of extensive economic activities and development on the natural mangrove forests was partially compensated for by the LUSI events and also newly developed local community oriented conservative management.展开更多
The lack of visibility and the difficulty in developing a cognitive map may be particularly important in wayfinding and in categories where the use of accessibility and sociability will provide a square suggestion in ...The lack of visibility and the difficulty in developing a cognitive map may be particularly important in wayfinding and in categories where the use of accessibility and sociability will provide a square suggestion in the Kuala Lumpur City Center Park （KLCC）. This study attempted to examine the existing structure within the vicinity of KLCC and the transformations of its vicinity based on a square suggestion through morphological analysis using axial analysis and observa- tions. The axial analysis shows how the accessibility of the square has shifted within the city and compares it with an existing park. Moreover, a square suggestion can provide context for the Petronas Twin Towers as a landmark and symbolic building. A square, as a regular geometry, can aid in improving the configuration of the vicinity of KLCC. Consequently, this research is useful to architects, tourism managers, and urban designers because it demonstrates the importance of effective factors in sustaining accessible and sociable space, such as a square.展开更多
Legibility is based on landmarks and geometry. Visitors in a space learn to ＂read＂ an area by using three- and two-dimensional cues. This research aimed to determine the responses of visitors to the influence of geo...Legibility is based on landmarks and geometry. Visitors in a space learn to ＂read＂ an area by using three- and two-dimensional cues. This research aimed to determine the responses of visitors to the influence of geometry on the legibility at Kuala Lumpur City Center （KLCC）. The relationship between geometry and space legibility can affect visitors＇ wayfinding. In this study, visitors, including 86 respondents and 8 individuals who participated in a focus group, were surveyed through questionnaires and interviews during daytime. Results show that legibility was moderately and positively correlated with regular geometry, but legibility was negligibly affected by existing geometry. Regression analysis, Hest, ANOVA, and scheme coding of qualitative data suggested that regular geometry used in urban spaces might strongly improve legibility. For urban designers, regular geometry associated with landmarks enhances legibility.展开更多
Geothermal fluid of Lumpur Sidoarjo (Lusi) with lithium content as high as 5.81 mg/liter has a great potential as the source of lithium. Lithium recovery from geothermal liquid of Lusi is firstly investigated by adsor...Geothermal fluid of Lumpur Sidoarjo (Lusi) with lithium content as high as 5.81 mg/liter has a great potential as the source of lithium. Lithium recovery from geothermal liquid of Lusi is firstly investigated by adsorption methods with Lithium Manganese Oxide (LMO) as absorbent. LMO is considered as a promising candidate of adsorbent material due to non-toxic and low cost production. LMOs with different ratio of mole are prepared by solid state reactions method at temperature 500?C for 5 hrs. XRD peaks of pre- and post-acid treatment LMO 1, 0.8 and 0.5 show a stable spinel crystal structure while LMO 2 has monoclinic structure. The highest lithium adsorption capability is obtained by LMO 1 with 6.6 mg/g.展开更多
1 Aging in Asia-an avalanche starts to form With decreasing fertilityrate and increasing life expectan-cy, the world is aging- withhighest rates in Asia. The socio-economic, financial and medicalconsequences of the ag...1 Aging in Asia-an avalanche starts to form With decreasing fertilityrate and increasing life expectan-cy, the world is aging- withhighest rates in Asia. The socio-economic, financial and medicalconsequences of the aging popu-展开更多
This paper will discuss the computerised developm en t control and approval system being developed for the Planning and Development C ontrol Department, City Hall of Kuala Lumpur, with stress on the GIS architectur e ...This paper will discuss the computerised developm en t control and approval system being developed for the Planning and Development C ontrol Department, City Hall of Kuala Lumpur, with stress on the GIS architectur e developed within the system. The prospects and challenges towards implementati on of the system are also discussed.展开更多
Urban areas usually experience higher temperatures compared with their rural surroundings; this is characterized as urban heat islands （UHIs）, which are the result of environmental overheating due to anthropic activ...Urban areas usually experience higher temperatures compared with their rural surroundings; this is characterized as urban heat islands （UHIs）, which are the result of environmental overheating due to anthropic activities. Urban areas,which are characterised by massive construction that reduce local vegetation coverage, are subject to the absorption of a large amount of solar radiation,which is only partially released into the atmosphere by radiation in the thermal infrared.展开更多
文摘Remotely sensed data are capable of providing spatial and temporal information on land use land cover(LULC)over a large extent of land.The Sidoarjo District in East Java Province has recently been extensively explored for economic development opportunities.This paper examines the use of multi-temporal Landsat images in deriving information for LULC maps,changes of land development and natural ecosystems such as mangrove forest within particular economic reform areas.Results suggest a minimum accuracy(baseline)for LULC mapping using Landsat multispectral reflectance data of 74% for the overall accuracy(OA)and 0.70 for the kappa coefficient of agreement(kappa).On average an acceptable accuracy(OA=88% and kappa=0.86)can be achieved by integrating multispectral reflectance and green normalized difference vegetation index(GNDVI)to support vector machine classification.The economic reform in the Sidoarjo District made a significant change to LULC and mangrove distribution.From 1995 to 2015,25% of crop land and 15% of bare land changed to become built-up areas,and 8% of wetland and 22% of mangroves changed to crop land.A remarkable decrease of mangrove forest occurred in the interior land along the river systems over the whole district.Fortunately,the coastal mangroves areas saw a significant increase due to the Lumpur Sidoarjo(LUSI)-caused mud flow sediments near the estuary of the river.The impact of extensive economic activities and development on the natural mangrove forests was partially compensated for by the LUSI events and also newly developed local community oriented conservative management.
文摘The lack of visibility and the difficulty in developing a cognitive map may be particularly important in wayfinding and in categories where the use of accessibility and sociability will provide a square suggestion in the Kuala Lumpur City Center Park （KLCC）. This study attempted to examine the existing structure within the vicinity of KLCC and the transformations of its vicinity based on a square suggestion through morphological analysis using axial analysis and observa- tions. The axial analysis shows how the accessibility of the square has shifted within the city and compares it with an existing park. Moreover, a square suggestion can provide context for the Petronas Twin Towers as a landmark and symbolic building. A square, as a regular geometry, can aid in improving the configuration of the vicinity of KLCC. Consequently, this research is useful to architects, tourism managers, and urban designers because it demonstrates the importance of effective factors in sustaining accessible and sociable space, such as a square.
文摘Legibility is based on landmarks and geometry. Visitors in a space learn to ＂read＂ an area by using three- and two-dimensional cues. This research aimed to determine the responses of visitors to the influence of geometry on the legibility at Kuala Lumpur City Center （KLCC）. The relationship between geometry and space legibility can affect visitors＇ wayfinding. In this study, visitors, including 86 respondents and 8 individuals who participated in a focus group, were surveyed through questionnaires and interviews during daytime. Results show that legibility was moderately and positively correlated with regular geometry, but legibility was negligibly affected by existing geometry. Regression analysis, Hest, ANOVA, and scheme coding of qualitative data suggested that regular geometry used in urban spaces might strongly improve legibility. For urban designers, regular geometry associated with landmarks enhances legibility.
文摘Geothermal fluid of Lumpur Sidoarjo (Lusi) with lithium content as high as 5.81 mg/liter has a great potential as the source of lithium. Lithium recovery from geothermal liquid of Lusi is firstly investigated by adsorption methods with Lithium Manganese Oxide (LMO) as absorbent. LMO is considered as a promising candidate of adsorbent material due to non-toxic and low cost production. LMOs with different ratio of mole are prepared by solid state reactions method at temperature 500?C for 5 hrs. XRD peaks of pre- and post-acid treatment LMO 1, 0.8 and 0.5 show a stable spinel crystal structure while LMO 2 has monoclinic structure. The highest lithium adsorption capability is obtained by LMO 1 with 6.6 mg/g.
文摘1 Aging in Asia-an avalanche starts to form With decreasing fertilityrate and increasing life expectan-cy, the world is aging- withhighest rates in Asia. The socio-economic, financial and medicalconsequences of the aging popu-
文摘This paper will discuss the computerised developm en t control and approval system being developed for the Planning and Development C ontrol Department, City Hall of Kuala Lumpur, with stress on the GIS architectur e developed within the system. The prospects and challenges towards implementati on of the system are also discussed.
基金funded by Grand Challenge-SUS(Sustainability Science)Grants GC002C-15SUS and GC002A-15SUS
文摘Urban areas usually experience higher temperatures compared with their rural surroundings; this is characterized as urban heat islands （UHIs）, which are the result of environmental overheating due to anthropic activities. Urban areas,which are characterised by massive construction that reduce local vegetation coverage, are subject to the absorption of a large amount of solar radiation,which is only partially released into the atmosphere by radiation in the thermal infrared.
