The strategically located land index support system for human settlements land reform in South Africa
- Musakwa, Walter, Tshesane, Rebone M., Segooa, Lerato Raesetsa, Makoni, Eric N., Kangethe, Matheri
- Authors: Musakwa, Walter , Tshesane, Rebone M. , Segooa, Lerato Raesetsa , Makoni, Eric N. , Kangethe, Matheri
- Date: 2015-07-07
- Subjects: Human settlements - South Africa , Land reform - South Africa , Geographic information systems , Earth observation , Multi-criteria decision making
- Type: Article
- Identifier: uj:5229 , ISBN 9780692474341 , http://hdl.handle.net/10210/14572
- Description: Creating sustainable human settlements is fundamental in fostering spatial and socio-economic integration in South Africa. Policy makers are often faced with the problem of identifying strategically located land for human settlements land reform in South Africa. To date there is no tool or standard framework that assist the government to identify land that is strategically located for land reform. This study proposes the use of geographic in- formation systems (GIS), earth observation (EO) data and multi-criteria decision making (MCDM) to develop a strategically located land index (SLLI) deployed in a web viewer to identify land that is smart for human settlements land reform. The study demonstrates that using the GIS and EO and the GIS webserver are invaluable tools in facilitating streamlined, coordinated, standardised and evidence-based decisions for human settle- ments land reform. However, there is need for capacity building in government departments responsible for land reform and development planning.
- Full Text:
- Authors: Musakwa, Walter , Tshesane, Rebone M. , Segooa, Lerato Raesetsa , Makoni, Eric N. , Kangethe, Matheri
- Date: 2015-07-07
- Subjects: Human settlements - South Africa , Land reform - South Africa , Geographic information systems , Earth observation , Multi-criteria decision making
- Type: Article
- Identifier: uj:5229 , ISBN 9780692474341 , http://hdl.handle.net/10210/14572
- Description: Creating sustainable human settlements is fundamental in fostering spatial and socio-economic integration in South Africa. Policy makers are often faced with the problem of identifying strategically located land for human settlements land reform in South Africa. To date there is no tool or standard framework that assist the government to identify land that is strategically located for land reform. This study proposes the use of geographic in- formation systems (GIS), earth observation (EO) data and multi-criteria decision making (MCDM) to develop a strategically located land index (SLLI) deployed in a web viewer to identify land that is smart for human settlements land reform. The study demonstrates that using the GIS and EO and the GIS webserver are invaluable tools in facilitating streamlined, coordinated, standardised and evidence-based decisions for human settle- ments land reform. However, there is need for capacity building in government departments responsible for land reform and development planning.
- Full Text:
A GIS approach for flood vulnerability and adaptation analysis in Diepsloot, Johannesburg
- Authors: Ngie, Adeline
- Date: 2012
- Subjects: Floods , Squatter settlements , Diepsloot (Gauteng, South Africa) , Geographic information systems
- Type: Mini-Dissertation
- Identifier: uj:7347 , http://hdl.handle.net/10210/8095
- Description: M. Sc. (Environmental Management) , The 2010/2011 floods saw the City of Johannesburg and many other municipalities in South Africa declared disaster ridden due to the number of deaths, homeless citizens and loss of property. Conventional Geographic Information System (GIS) approach is used to map flood vulnerable areas using floodlines while social surveys assess at-risk population through impacts of a hazard. This study then tests the hypothesis that combined approach to identify and map flood vulnerable areas is better than independent approaches, using Diepsloot township as a case study. Starting with aerial photographs as a base layer, ArcGIS 10™ was used to conduct spatial analysis of the flood-prone areas using the 1:50- and 1:100-year floodlines. The results mapped out dwellings vulnerable to flooding along the floodplains only. The survey probed the people’s perceptions, experiences and coping strategies with flooding. Findings from the field survey revealed some key observations, as follows: The perception of 95% of respondents is that flooding is a major environmental challenge in Diepsloot township as confirmed by their experiences; 61% attributed this to construction of dwellings within floodplains; and 71% agreed that how strong a dwelling is in terms of construction materials also determines its vulnerability to flooding. In addition to floodplains, other sections of the settlement were identified through local knowledge as being vulnerable to various types of flooding - fast-flowing water, ponding and slope run-off. Dwellings on hill-slopes and besides storm water drains were identified as vulnerable to flooding. Slope measurements over the area were done using contours which corroborated these further areas of flood vulnerability as both low-lying and high slopes. Due to poor layout of dwellings, vulnerable units could not be counted but the extent was visible in the mapping. Long-term coping strategies and adaptation measures do seem to be in place, without interventions from municipal authorities. The combined approach for flood vulnerability assessment proved successful in creating a practical and affordable means to create a more comprehensive assessment, called for local knowledge engagement in policy development to mitigate flood disaster risk in the Gauteng City- Region.
- Full Text:
- Authors: Ngie, Adeline
- Date: 2012
- Subjects: Floods , Squatter settlements , Diepsloot (Gauteng, South Africa) , Geographic information systems
- Type: Mini-Dissertation
- Identifier: uj:7347 , http://hdl.handle.net/10210/8095
- Description: M. Sc. (Environmental Management) , The 2010/2011 floods saw the City of Johannesburg and many other municipalities in South Africa declared disaster ridden due to the number of deaths, homeless citizens and loss of property. Conventional Geographic Information System (GIS) approach is used to map flood vulnerable areas using floodlines while social surveys assess at-risk population through impacts of a hazard. This study then tests the hypothesis that combined approach to identify and map flood vulnerable areas is better than independent approaches, using Diepsloot township as a case study. Starting with aerial photographs as a base layer, ArcGIS 10™ was used to conduct spatial analysis of the flood-prone areas using the 1:50- and 1:100-year floodlines. The results mapped out dwellings vulnerable to flooding along the floodplains only. The survey probed the people’s perceptions, experiences and coping strategies with flooding. Findings from the field survey revealed some key observations, as follows: The perception of 95% of respondents is that flooding is a major environmental challenge in Diepsloot township as confirmed by their experiences; 61% attributed this to construction of dwellings within floodplains; and 71% agreed that how strong a dwelling is in terms of construction materials also determines its vulnerability to flooding. In addition to floodplains, other sections of the settlement were identified through local knowledge as being vulnerable to various types of flooding - fast-flowing water, ponding and slope run-off. Dwellings on hill-slopes and besides storm water drains were identified as vulnerable to flooding. Slope measurements over the area were done using contours which corroborated these further areas of flood vulnerability as both low-lying and high slopes. Due to poor layout of dwellings, vulnerable units could not be counted but the extent was visible in the mapping. Long-term coping strategies and adaptation measures do seem to be in place, without interventions from municipal authorities. The combined approach for flood vulnerability assessment proved successful in creating a practical and affordable means to create a more comprehensive assessment, called for local knowledge engagement in policy development to mitigate flood disaster risk in the Gauteng City- Region.
- Full Text:
Locational model for potential storage dam site : a knowledge-based geographic information system-approach
- Authors: Lin, Ming-Jang
- Date: 2014-07-15
- Subjects: Geographic information systems , Dams - Location - Mathematical models
- Type: Thesis
- Identifier: uj:11688 , http://hdl.handle.net/10210/11410
- Description: Ph.D. (Geography) , Please refer to full text to view abstract
- Full Text:
- Authors: Lin, Ming-Jang
- Date: 2014-07-15
- Subjects: Geographic information systems , Dams - Location - Mathematical models
- Type: Thesis
- Identifier: uj:11688 , http://hdl.handle.net/10210/11410
- Description: Ph.D. (Geography) , Please refer to full text to view abstract
- Full Text:
Mobile GIS for construction quality managers and surveyors
- Arora, Nishant, Ogra, Aurobindo
- Authors: Arora, Nishant , Ogra, Aurobindo
- Date: 2012
- Subjects: Geographic information systems , Quality survey managers , Construction management , ArcGIS
- Type: Article
- Identifier: http://ujcontent.uj.ac.za8080/10210/384559 , uj:6273 , http://hdl.handle.net/10210/8913
- Description: In any mega construction project, quality survey managers play a vital role in judging quality of work done by different contractors and sub-contractors. Usually a quality survey manager uses a hard copy form to records the survey information and for reporting to the client. Typically, this entire process takes a week’s time or even more, there is no workflow in place for recording information and analyzing trends in irregularity by the quality managers. The requirement to capture and report quality survey observations in real time evoked a need to research on mechanism for recording the observations using smart phone and existing GIS infrastructure without any development on smart phone and mobile devices. An integrated solution using an editable ArcGIS Server feature service and ArcGIS online web maps was developed in order to perform the quality survey. The paper describes the mobile GIS solution for construction projects. The solution allows recording observations in a real time environment through a user-friendly interface and workflow driven process. It also allows users to capture the picture and attach it to an editable feature service. The client can view this information in real time using ArcGIS online or in the enterprise geodatabase. The use of the Esri online ensures restrictions on accessibility of the content and takes advantage over other application because no programming or development is required. In addition, the information is stored in Oracle database and used for analysis in future, based on the changing reporting requirements. The developed solution saved on time, money and is easy to use and deploy.
- Full Text:
- Authors: Arora, Nishant , Ogra, Aurobindo
- Date: 2012
- Subjects: Geographic information systems , Quality survey managers , Construction management , ArcGIS
- Type: Article
- Identifier: http://ujcontent.uj.ac.za8080/10210/384559 , uj:6273 , http://hdl.handle.net/10210/8913
- Description: In any mega construction project, quality survey managers play a vital role in judging quality of work done by different contractors and sub-contractors. Usually a quality survey manager uses a hard copy form to records the survey information and for reporting to the client. Typically, this entire process takes a week’s time or even more, there is no workflow in place for recording information and analyzing trends in irregularity by the quality managers. The requirement to capture and report quality survey observations in real time evoked a need to research on mechanism for recording the observations using smart phone and existing GIS infrastructure without any development on smart phone and mobile devices. An integrated solution using an editable ArcGIS Server feature service and ArcGIS online web maps was developed in order to perform the quality survey. The paper describes the mobile GIS solution for construction projects. The solution allows recording observations in a real time environment through a user-friendly interface and workflow driven process. It also allows users to capture the picture and attach it to an editable feature service. The client can view this information in real time using ArcGIS online or in the enterprise geodatabase. The use of the Esri online ensures restrictions on accessibility of the content and takes advantage over other application because no programming or development is required. In addition, the information is stored in Oracle database and used for analysis in future, based on the changing reporting requirements. The developed solution saved on time, money and is easy to use and deploy.
- Full Text:
Identification and mapping of contamination plumes at Venetia Mine utilising remote sensing techniques and geographical information systems as environmental monitoring tools
- Authors: Louw, Ansu
- Date: 2012-02-28
- Subjects: Environmental monitoring , Remote sensing , Geographic information systems
- Type: Mini-Dissertation
- Identifier: uj:2090 , http://hdl.handle.net/10210/4436
- Description: M.A. , The mining industry is an important contributor to the South African economy, but is also a major contributor to surface water and groundwater contamination. It is therefore essential for mining operations to comply with legislative requirements in terms of preventing and/or rehabilitating areas impacted by mining activities. Ensuring this compliance requires effective and frequent monitoring of impacts and associated rehabilitation caused by mining operations. Remote sensing and geographical information systems (GIS) offer innovative tools for executing effective monitoring efforts related to mining impacts; and although they do not replace conventional methods of environmental monitoring, these tools can enhance the analysis and decision-making of such efforts. This study is aimed at identifying and mapping the extent and direction of flow of contamination plumes originating from slimes and tailings dams at the Venetia Mine in the Limpopo Province by using remote sensing and GIS tools to illustrate these tools’ effectiveness and to create a simplified database and support system for continued monitoring. With the implementation of a number of image enhancement techniques such as the false-colour composite, the Tasselled Cap transformation and the normalised difference vegetation index (NDVI) on LANDSAT satellite imagery; together with the interpolation of borehole water quality data, contamination plumes could be mapped and interpreted. The results and interpretation of the processed satellite imagery (indicating a decrease in plant growth from 2001 to 2006) were verified by the results of the interpolated water quality data (which indicated high concentrations of total dissolved solids in 2006). The final reclassified image of the NDVI provided a simplified version of the findings which could be presented to the laymen whereby decision-making could be augmented. Accordingly, the study concluded that the utilisation of more innovative monitoring tools such as remote sensing and GIS could enhance monitoring efforts and decision-making with regard to environmental management plans and legal compliance.
- Full Text:
- Authors: Louw, Ansu
- Date: 2012-02-28
- Subjects: Environmental monitoring , Remote sensing , Geographic information systems
- Type: Mini-Dissertation
- Identifier: uj:2090 , http://hdl.handle.net/10210/4436
- Description: M.A. , The mining industry is an important contributor to the South African economy, but is also a major contributor to surface water and groundwater contamination. It is therefore essential for mining operations to comply with legislative requirements in terms of preventing and/or rehabilitating areas impacted by mining activities. Ensuring this compliance requires effective and frequent monitoring of impacts and associated rehabilitation caused by mining operations. Remote sensing and geographical information systems (GIS) offer innovative tools for executing effective monitoring efforts related to mining impacts; and although they do not replace conventional methods of environmental monitoring, these tools can enhance the analysis and decision-making of such efforts. This study is aimed at identifying and mapping the extent and direction of flow of contamination plumes originating from slimes and tailings dams at the Venetia Mine in the Limpopo Province by using remote sensing and GIS tools to illustrate these tools’ effectiveness and to create a simplified database and support system for continued monitoring. With the implementation of a number of image enhancement techniques such as the false-colour composite, the Tasselled Cap transformation and the normalised difference vegetation index (NDVI) on LANDSAT satellite imagery; together with the interpolation of borehole water quality data, contamination plumes could be mapped and interpreted. The results and interpretation of the processed satellite imagery (indicating a decrease in plant growth from 2001 to 2006) were verified by the results of the interpolated water quality data (which indicated high concentrations of total dissolved solids in 2006). The final reclassified image of the NDVI provided a simplified version of the findings which could be presented to the laymen whereby decision-making could be augmented. Accordingly, the study concluded that the utilisation of more innovative monitoring tools such as remote sensing and GIS could enhance monitoring efforts and decision-making with regard to environmental management plans and legal compliance.
- Full Text:
Bepaling van gronderosiepotensiaal in die Nsikazi-distrik (Mpumalanga) met afstandwaarneming en GIS
- Authors: Wentzel, Karen Chantal
- Date: 2012-09-12
- Subjects: Soil erosion , Erosion -- Experiments , Remote sensing , Geographic information systems
- Type: Thesis
- Identifier: uj:10207 , http://hdl.handle.net/10210/7581
- Description: M.Sc. , The aim of the present study is to determine the influence of human activities on fluvial erosion in the Nsikazi District (Mpumalanga). Recommendations for the optimal use of available resources in the study area are made after considering the soil erosion potential of the area, and by comparing the Nsikazi District with the nearby conservation control area, the Kruger National Park (KNP). Soil erosion can be optimally prevented by employing the most suitable management practice; therefore reliable information is required concerning the location, causes and extent of soil erosion. During the present study, satellite remote sensing is evaluated as a cost effective and timely source of information to fulfill this requirement. Due to the fact that soil erosion is a natural process, which can be amplified by certain natural physical factors, it is necessary to determine the natural soil erosion potential of an area before any assumptions can be made regarding the cause of soil erosion. In this study the integration of the natural soil erosion potential map and bare soil map resulted in the establishment of the overall soil erosion potential map for the area. Landuse can be described as the most significant contributing factor in the occurrence of bare soil (devoid of vegetation), and therefore this is an indicator not only of soil degradation, but also of human impact. The data used during the present study consist of digital satellite images (Landsat TM and SPOT) and aerial photographs provided by the Institute for Soil, Climate and Water (ISCW). Additional information was also collected from pre-existing soil and topographical maps of the area. The ILWIS 2.1 computer programme was then employed for image processing and GIS analysis of the data. The study was carried out in two analytical phases. A data processing phase, which was carried out as follows: - The physical erosion factors, which determine soil erosion potential, namely soil erodibility, slope, slope length, slope form and slope aspect as well as plant cover, were converted to GIS data layers and mapped , followed by - the identification and mapping of the presence of bare soil and landuse patterns. A data intergration phase was included, whereby the above mentioned data layers were integrated to determine the natural and overall soil erosion potential, as well as the evaluation of landuse, thereby indicating the soil cultivation potential for the study area.
- Full Text:
- Authors: Wentzel, Karen Chantal
- Date: 2012-09-12
- Subjects: Soil erosion , Erosion -- Experiments , Remote sensing , Geographic information systems
- Type: Thesis
- Identifier: uj:10207 , http://hdl.handle.net/10210/7581
- Description: M.Sc. , The aim of the present study is to determine the influence of human activities on fluvial erosion in the Nsikazi District (Mpumalanga). Recommendations for the optimal use of available resources in the study area are made after considering the soil erosion potential of the area, and by comparing the Nsikazi District with the nearby conservation control area, the Kruger National Park (KNP). Soil erosion can be optimally prevented by employing the most suitable management practice; therefore reliable information is required concerning the location, causes and extent of soil erosion. During the present study, satellite remote sensing is evaluated as a cost effective and timely source of information to fulfill this requirement. Due to the fact that soil erosion is a natural process, which can be amplified by certain natural physical factors, it is necessary to determine the natural soil erosion potential of an area before any assumptions can be made regarding the cause of soil erosion. In this study the integration of the natural soil erosion potential map and bare soil map resulted in the establishment of the overall soil erosion potential map for the area. Landuse can be described as the most significant contributing factor in the occurrence of bare soil (devoid of vegetation), and therefore this is an indicator not only of soil degradation, but also of human impact. The data used during the present study consist of digital satellite images (Landsat TM and SPOT) and aerial photographs provided by the Institute for Soil, Climate and Water (ISCW). Additional information was also collected from pre-existing soil and topographical maps of the area. The ILWIS 2.1 computer programme was then employed for image processing and GIS analysis of the data. The study was carried out in two analytical phases. A data processing phase, which was carried out as follows: - The physical erosion factors, which determine soil erosion potential, namely soil erodibility, slope, slope length, slope form and slope aspect as well as plant cover, were converted to GIS data layers and mapped , followed by - the identification and mapping of the presence of bare soil and landuse patterns. A data intergration phase was included, whereby the above mentioned data layers were integrated to determine the natural and overall soil erosion potential, as well as the evaluation of landuse, thereby indicating the soil cultivation potential for the study area.
- Full Text:
Managing hazards : fire management in the Cape Peninsula
- Authors: Rowles, Robert
- Date: 2012-11-05
- Subjects: Fire management , Hazard management , Wildfires - Prevention and control , Wildfires - Remote sensing , Geographic information systems
- Type: Mini-Dissertation
- Identifier: uj:7355 , http://hdl.handle.net/10210/8111
- Description: M.Sc. , Veld and bush fires are a natural phenomenon that occurs throughout the world. They have occurred naturally for thousands of years, providing both an ecological function and an effective environmental management tool. They have both positive and negative impacts on society and the environment. It is evident that, although fire is a natural phenomenon, the consequences of veldfire can have devastating effects on economies, natural environment and socio-economic environments. Veldfire is a pertinent issue in South Africa. About 1.18 percent of the country’s land surface is burnt each year. The threat of veldfire calls for the effective management thereof. The National Veld and Forest Fire Act 101 of 1998 (The Veld Fire Act) is the Act that constitutes fire management in South Africa. This Veldfire Act aims at veldfire management through the prevention and combating of veld, forest and mountain fires. The Veldfire Act’s principal aim is the regulation of wildfires, but it also plays a role in veldfire management generally. The Veld Fire Act aims to control the spread of veldfires by imposing obligations on landowners to prepare and maintain firebreaks. It applies both to preventing the spread of a veldfire through good management or operational practices and to extinguishing veldfires through procedures set out in the The Veld Fire Act. Uncertainties remain in forecasting the effects that climate change will have on veldfire management within South Africa. Due to the expected shifting rainfall patterns, it is assumed at this stage that in some areas of South Africa fire seasons will increase, and in others they will decrease. There is a need for further research into the effects of climate change and veld fire management, especially within areas of sensitive social and ecological systems. Fire management on the Peninsula is a complex issue, but initiatives such as the new national legislation, the Cape Peninsula National Park’s Fire Management plan, and the City of Cape Town’s Natural Interface Strategy are helping contribute to improved fire management in the Cape Peninsula. Although there is room for improvement for veldfire management in the Cape Peninsula, there has been a lot of progress since early fire management in the 1960s. Veldfire data from the Cape Peninsula between 1999 and 2009 were analyzed to reveal interesting characteristics about the fire records in the area. From available data sources and veldfire records over the ten-year period between 1999 and 2009, the highest number of veldfires on average occurred predominantly between May and June each year.
- Full Text:
- Authors: Rowles, Robert
- Date: 2012-11-05
- Subjects: Fire management , Hazard management , Wildfires - Prevention and control , Wildfires - Remote sensing , Geographic information systems
- Type: Mini-Dissertation
- Identifier: uj:7355 , http://hdl.handle.net/10210/8111
- Description: M.Sc. , Veld and bush fires are a natural phenomenon that occurs throughout the world. They have occurred naturally for thousands of years, providing both an ecological function and an effective environmental management tool. They have both positive and negative impacts on society and the environment. It is evident that, although fire is a natural phenomenon, the consequences of veldfire can have devastating effects on economies, natural environment and socio-economic environments. Veldfire is a pertinent issue in South Africa. About 1.18 percent of the country’s land surface is burnt each year. The threat of veldfire calls for the effective management thereof. The National Veld and Forest Fire Act 101 of 1998 (The Veld Fire Act) is the Act that constitutes fire management in South Africa. This Veldfire Act aims at veldfire management through the prevention and combating of veld, forest and mountain fires. The Veldfire Act’s principal aim is the regulation of wildfires, but it also plays a role in veldfire management generally. The Veld Fire Act aims to control the spread of veldfires by imposing obligations on landowners to prepare and maintain firebreaks. It applies both to preventing the spread of a veldfire through good management or operational practices and to extinguishing veldfires through procedures set out in the The Veld Fire Act. Uncertainties remain in forecasting the effects that climate change will have on veldfire management within South Africa. Due to the expected shifting rainfall patterns, it is assumed at this stage that in some areas of South Africa fire seasons will increase, and in others they will decrease. There is a need for further research into the effects of climate change and veld fire management, especially within areas of sensitive social and ecological systems. Fire management on the Peninsula is a complex issue, but initiatives such as the new national legislation, the Cape Peninsula National Park’s Fire Management plan, and the City of Cape Town’s Natural Interface Strategy are helping contribute to improved fire management in the Cape Peninsula. Although there is room for improvement for veldfire management in the Cape Peninsula, there has been a lot of progress since early fire management in the 1960s. Veldfire data from the Cape Peninsula between 1999 and 2009 were analyzed to reveal interesting characteristics about the fire records in the area. From available data sources and veldfire records over the ten-year period between 1999 and 2009, the highest number of veldfires on average occurred predominantly between May and June each year.
- Full Text:
Analysing decadal land use/cover dynamics of the Lake Basaka catchment (Main Ethiopian Rift) using LANDSAT imagery and GIS
- Authors: Dinka, M. O.
- Date: 2012
- Subjects: Change analysis , Image classification , Lake Basaka (Ethiopia) , LANDSAT , Geographic information systems
- Type: Article
- Identifier: uj:5251 , http://hdl.handle.net/10210/14857
- Description: Development of accurate classification methods for rapidly changing catchments like that of Lake Basaka is fundamental to better understanding the catchment dynamics, which were not addressed in previous studies. Thus, the aim of this study was to map the decadal land use ⁄ cover (LUC) regimes of the Lake Basaka catchment, utilizing time series of LANDSAT images and to analyse the changes that occurred at different time periods. Both unsupervised and supervised image classification systems were utilized in Earth Resources Data Analysis System (ERDAS) Imagine (9.1). Appropriat pre- and postprocessing also was utilized. Seven major LUC classes were identified in the final land cover maps produced after the supervised (maximum likelihood) classification exercise. The analysis results indicated the Lake Basaka catchment had experienced a drastic change in its LUC conditions over the last 4–5 decades because of rapid increases in human settlement, deforestation, establishment of irrigation schemes and Awash National Park (ANP). Approximately 18 924 ha of forest and 4730 ha of grazing lands were devastated between 1973 and 2008. At the same time, there was a shift in land cover from forests ⁄ woodlands to open woodlands, shrub and grazing lands. The land cover classifications generally were achieved at a very high overall accuracy (84.34%) and overall kappa statistics (0.802), substantiating the value of using the classified LUC in this study as an input to hydrological models. This study results provide an opportunity to better understand and quantify the hydrological response regimes of the lake catchment from the perspective of changing LUC conditions during different hydrological periods and the resulting dynamics of the lake water balance.
- Full Text:
- Authors: Dinka, M. O.
- Date: 2012
- Subjects: Change analysis , Image classification , Lake Basaka (Ethiopia) , LANDSAT , Geographic information systems
- Type: Article
- Identifier: uj:5251 , http://hdl.handle.net/10210/14857
- Description: Development of accurate classification methods for rapidly changing catchments like that of Lake Basaka is fundamental to better understanding the catchment dynamics, which were not addressed in previous studies. Thus, the aim of this study was to map the decadal land use ⁄ cover (LUC) regimes of the Lake Basaka catchment, utilizing time series of LANDSAT images and to analyse the changes that occurred at different time periods. Both unsupervised and supervised image classification systems were utilized in Earth Resources Data Analysis System (ERDAS) Imagine (9.1). Appropriat pre- and postprocessing also was utilized. Seven major LUC classes were identified in the final land cover maps produced after the supervised (maximum likelihood) classification exercise. The analysis results indicated the Lake Basaka catchment had experienced a drastic change in its LUC conditions over the last 4–5 decades because of rapid increases in human settlement, deforestation, establishment of irrigation schemes and Awash National Park (ANP). Approximately 18 924 ha of forest and 4730 ha of grazing lands were devastated between 1973 and 2008. At the same time, there was a shift in land cover from forests ⁄ woodlands to open woodlands, shrub and grazing lands. The land cover classifications generally were achieved at a very high overall accuracy (84.34%) and overall kappa statistics (0.802), substantiating the value of using the classified LUC in this study as an input to hydrological models. This study results provide an opportunity to better understand and quantify the hydrological response regimes of the lake catchment from the perspective of changing LUC conditions during different hydrological periods and the resulting dynamics of the lake water balance.
- Full Text:
The use of supply chains and supply chain management to improve the efficiency and effectiveness of GIS units
- Authors: Schmitz, Peter Maria Urban
- Date: 2010-02-23T10:16:53Z
- Subjects: Business logistics , Geographic information systems
- Type: Thesis
- Identifier: uj:6629 , http://hdl.handle.net/10210/3030
- Description: D.Phil. , This is a workbook to record the processes, responsible departments; current practices; business rules; inputs and outputs; and disconnects with regards to a “staple yourself to an order” exercise. This is done to establish problem areas within the supply chain and to provide guidance on improving the supply chain. This workbook should be used in conjunction with GISDataSCOR v1.0. and the results of the disconnect analysis. The “staple yourself to an order” exercise should start with SOURCE, MAKE, DELIVER, then followed by PLAN and RETURN.
- Full Text:
- Authors: Schmitz, Peter Maria Urban
- Date: 2010-02-23T10:16:53Z
- Subjects: Business logistics , Geographic information systems
- Type: Thesis
- Identifier: uj:6629 , http://hdl.handle.net/10210/3030
- Description: D.Phil. , This is a workbook to record the processes, responsible departments; current practices; business rules; inputs and outputs; and disconnects with regards to a “staple yourself to an order” exercise. This is done to establish problem areas within the supply chain and to provide guidance on improving the supply chain. This workbook should be used in conjunction with GISDataSCOR v1.0. and the results of the disconnect analysis. The “staple yourself to an order” exercise should start with SOURCE, MAKE, DELIVER, then followed by PLAN and RETURN.
- Full Text:
The potential of geo-location based services to delineate the origin and destination of commuters of Gautrain public transit operations
- Authors: Moyo, Thembani
- Date: 2016
- Subjects: Gautrain (South Africa) , Geospatial data - Data processing , Geographic information systems , Maps - Computer programs , Urban transportation - South Africa - Gauteng
- Language: English
- Type: Masters (Thesis)
- Identifier: http://hdl.handle.net/10210/233116 , uj:23791
- Description: M.Tech. (Operations Management) , Abstract: Living in the current century, conducting interviews and carrying out field surveys is no longer enough. In an era, where everything has become smart, from smartphones to smart cities, a demand for smart analysis techniques has risen. Currently, knowledge gaps still exist in travel demand management (Giaimo et al,. 2010), hence a bridge is still needed to link what is available (big data) and what could be done (planning). “Advantages of applying smart technology to collect analyse data leads to flexible decision making as opposed to traditional cumbersome techniques” (Mokoena & Musakwa, 2016 p78-79). As no one model can be used as a one glove fit all situations, a need to continuously develop and renew planning models is essential. This research reports on the spatial distribution of the Gautrain commuters, based on spatial predictions of the location of posts made on web 2.0 between the periods of January 2015 to June 2016. The findings from the content analysis highlight which train stations attract the most commuters and also possible locations for the expansion for Gautrain. In the study, the focal statistics presented the most visually accurate means of identifying clusters within a set radius. A hot spot belt was identified in areas near existing stations such as Park Station; Sandton; and OR Tambo, this which concurs with the commuter tag data from the Gautrain. Also, new hot spots were identified in areas which are currently not serviced by the Gautrain such as Soweto and Randburg in Johannesburg; Germiston and Alberton in East Rand; Montana Park in Pretoria. Similarly through the results from kriging, hot and cold spots are easily identifiable. Locations with hot spots should be further invested into by improving connectivity levels, as these are clearly points of interests for the commuters. Future studies could run the model incorporating other control factors to determine variations using a time-series analysis, to identify any variations in hot and cold spots over time, thus areas which would present a constant hot spot would clearly be worth investing into. In conclusion the research presents a set of prediction tools to generate maps from web 2.0 posts to visualise and demarcate the various nodes of the Gautrain. These predications have proven efficient for a big data however, a drawback also arises, as the standard error becomes greater if small amounts of records are used.
- Full Text:
- Authors: Moyo, Thembani
- Date: 2016
- Subjects: Gautrain (South Africa) , Geospatial data - Data processing , Geographic information systems , Maps - Computer programs , Urban transportation - South Africa - Gauteng
- Language: English
- Type: Masters (Thesis)
- Identifier: http://hdl.handle.net/10210/233116 , uj:23791
- Description: M.Tech. (Operations Management) , Abstract: Living in the current century, conducting interviews and carrying out field surveys is no longer enough. In an era, where everything has become smart, from smartphones to smart cities, a demand for smart analysis techniques has risen. Currently, knowledge gaps still exist in travel demand management (Giaimo et al,. 2010), hence a bridge is still needed to link what is available (big data) and what could be done (planning). “Advantages of applying smart technology to collect analyse data leads to flexible decision making as opposed to traditional cumbersome techniques” (Mokoena & Musakwa, 2016 p78-79). As no one model can be used as a one glove fit all situations, a need to continuously develop and renew planning models is essential. This research reports on the spatial distribution of the Gautrain commuters, based on spatial predictions of the location of posts made on web 2.0 between the periods of January 2015 to June 2016. The findings from the content analysis highlight which train stations attract the most commuters and also possible locations for the expansion for Gautrain. In the study, the focal statistics presented the most visually accurate means of identifying clusters within a set radius. A hot spot belt was identified in areas near existing stations such as Park Station; Sandton; and OR Tambo, this which concurs with the commuter tag data from the Gautrain. Also, new hot spots were identified in areas which are currently not serviced by the Gautrain such as Soweto and Randburg in Johannesburg; Germiston and Alberton in East Rand; Montana Park in Pretoria. Similarly through the results from kriging, hot and cold spots are easily identifiable. Locations with hot spots should be further invested into by improving connectivity levels, as these are clearly points of interests for the commuters. Future studies could run the model incorporating other control factors to determine variations using a time-series analysis, to identify any variations in hot and cold spots over time, thus areas which would present a constant hot spot would clearly be worth investing into. In conclusion the research presents a set of prediction tools to generate maps from web 2.0 posts to visualise and demarcate the various nodes of the Gautrain. These predications have proven efficient for a big data however, a drawback also arises, as the standard error becomes greater if small amounts of records are used.
- Full Text:
The status quo of GIS in municipal town planning departments in Gauteng and in the education of town planners
- Authors: Marais, Hester J. W.
- Date: 2008-08-15T07:42:22Z
- Subjects: Geographic information systems , City planning , City planners , Gauteng (South Africa)
- Type: Thesis
- Identifier: uj:7719 , http://hdl.handle.net/10210/858
- Description: Geographic Information Systems (GIS) are no longer new to the Town & Regional Planning (TRP) profession and have been implemented by different municipalities worldwide. The effective use of a GIS by municipal Town & Regional Planning departments in Gauteng would accelerate planning processes and enable more complex decision-making. This would expedite more effective land development administration associated with urban growth (Masser et al, 1996, p.195). This study investigates, by means of a mail survey and telephonic follow up conversations, the extent of use of GIS by the twenty-three municipal Town & Regional Planning department offices in Gauteng. Factors that, according to literature (Longley et al, 2001, p.346), could possibly result in limited GIS use, are identified and investigated with regard to each factors significance and further investigated. This includes a specific investigation into whether a GIS is available to Town & Regional Planning department offices, either on municipal level and/or departmentally as well as an investigation into the extent and quality of the GIS training of employees in a department office. The study establishes that the extent of use of GIS by the municipal Town & Regional Planning department offices in Gauteng is limited. Further, that GIS availability as well as GIS training are significant problem factors contributing to limited GIS use (Chapter 2). The absence of a GIS at municipal level in the six municipal regions in Gauteng, as possible cause to GIS availability problems as posed by literature (Easa et al, 2000, p.26), does not significantly contribute as a cause to less GIS availability, should a department office rely on using a municipally implemented GIS. The study identifies that a municipally implemented GIS, in most cases managed centrally in a specific department, is set up conducive for use by municipal Town & Regional Planning department offices. The study specifically establishes that although a GIS and Town & Regional Planning data may be 100% available via a network, some department offices may experience GIS availability problems because of the inadequate development of an intranet to serve a wider local area, and/or the absence of an Internet GIS (Chapter 3). Further investigation into whether GIS availability problems have their origin at departmental level, as posed by literature (Easa et al, 2000, p.11), establishes that a smaller GIS has been implemented departmentally by 43% department offices themselves. Only three of the thirteen department offices, without a departmental GIS, can access a municipal implemented GIS. These findings indicate the origin and nature of GIS availability problems experienced, since 8% of department offices do not have either a municipal or departmental GIS and 35% of department offices are experiencing problems to access a municipally implemented GIS, indicating why 82% of the department offices experience GIS and data availability problems which limits GIS use (Chapter 4). An investigation into the origin and cause of specific GIS training problems, experienced by 91% of the responding department offices’ employees, establishes that GIS departmental training problems are caused by a lack of GIS knowledge and/or employees with a Town & Regional Planning qualification that does not seem to have GIS as a subject, since 82% of the department offices indicate a need for GIS short courses (Chapter 4). Research into the formal Town & Regional Planning qualification as offered by the ten accredited tertiary institutions, with regard to the incorporation of GIS as a subject, establishes that the inclusion of the subject in the curriculum is not a significant cause of GIS training problems (Longley et al, 2005, p.431). The more recent introduction of the subject GIS into the curriculum explains why some employees have a formal qualification without GIS as subject. Specific problems are identified that negatively affect the teaching of GIS as a subject and cause a need for GIS study material that is specifically tailored for Town & Regional Planners (Chapter 5). The availability of a GIS and GIS training of department office employees is interrelated in facilitating effective use of GIS by municipal Town & Regional Planning department offices in Gauteng. This study specifically establishes that where a GIS exists at municipal level, such a system has to be made accessible to department offices within. This could be achieved either through appropriate development of the current inadequate intranet and/or the Internet, or further the implementation of a smaller GIS in department offices without a GIS. In addition, short courses should be offered in GIS for employees who did not have GIS as a subject when they qualified as well as to lecturers at tertiary institutions, who are not qualified to teach GIS. The offering of these GIS short courses can be supported through the developing of GIS study material tailored for Town & Regional Planners. These interventions, if implemented, will contribute to better GIS availability in municipal Town & Regional Planning department offices in Gauteng as well as GIS training of the Town & Regional Planning profession as a whole, resulting in more effective use of GIS. , Dr. L.G.C. Scheepers
- Full Text:
- Authors: Marais, Hester J. W.
- Date: 2008-08-15T07:42:22Z
- Subjects: Geographic information systems , City planning , City planners , Gauteng (South Africa)
- Type: Thesis
- Identifier: uj:7719 , http://hdl.handle.net/10210/858
- Description: Geographic Information Systems (GIS) are no longer new to the Town & Regional Planning (TRP) profession and have been implemented by different municipalities worldwide. The effective use of a GIS by municipal Town & Regional Planning departments in Gauteng would accelerate planning processes and enable more complex decision-making. This would expedite more effective land development administration associated with urban growth (Masser et al, 1996, p.195). This study investigates, by means of a mail survey and telephonic follow up conversations, the extent of use of GIS by the twenty-three municipal Town & Regional Planning department offices in Gauteng. Factors that, according to literature (Longley et al, 2001, p.346), could possibly result in limited GIS use, are identified and investigated with regard to each factors significance and further investigated. This includes a specific investigation into whether a GIS is available to Town & Regional Planning department offices, either on municipal level and/or departmentally as well as an investigation into the extent and quality of the GIS training of employees in a department office. The study establishes that the extent of use of GIS by the municipal Town & Regional Planning department offices in Gauteng is limited. Further, that GIS availability as well as GIS training are significant problem factors contributing to limited GIS use (Chapter 2). The absence of a GIS at municipal level in the six municipal regions in Gauteng, as possible cause to GIS availability problems as posed by literature (Easa et al, 2000, p.26), does not significantly contribute as a cause to less GIS availability, should a department office rely on using a municipally implemented GIS. The study identifies that a municipally implemented GIS, in most cases managed centrally in a specific department, is set up conducive for use by municipal Town & Regional Planning department offices. The study specifically establishes that although a GIS and Town & Regional Planning data may be 100% available via a network, some department offices may experience GIS availability problems because of the inadequate development of an intranet to serve a wider local area, and/or the absence of an Internet GIS (Chapter 3). Further investigation into whether GIS availability problems have their origin at departmental level, as posed by literature (Easa et al, 2000, p.11), establishes that a smaller GIS has been implemented departmentally by 43% department offices themselves. Only three of the thirteen department offices, without a departmental GIS, can access a municipal implemented GIS. These findings indicate the origin and nature of GIS availability problems experienced, since 8% of department offices do not have either a municipal or departmental GIS and 35% of department offices are experiencing problems to access a municipally implemented GIS, indicating why 82% of the department offices experience GIS and data availability problems which limits GIS use (Chapter 4). An investigation into the origin and cause of specific GIS training problems, experienced by 91% of the responding department offices’ employees, establishes that GIS departmental training problems are caused by a lack of GIS knowledge and/or employees with a Town & Regional Planning qualification that does not seem to have GIS as a subject, since 82% of the department offices indicate a need for GIS short courses (Chapter 4). Research into the formal Town & Regional Planning qualification as offered by the ten accredited tertiary institutions, with regard to the incorporation of GIS as a subject, establishes that the inclusion of the subject in the curriculum is not a significant cause of GIS training problems (Longley et al, 2005, p.431). The more recent introduction of the subject GIS into the curriculum explains why some employees have a formal qualification without GIS as subject. Specific problems are identified that negatively affect the teaching of GIS as a subject and cause a need for GIS study material that is specifically tailored for Town & Regional Planners (Chapter 5). The availability of a GIS and GIS training of department office employees is interrelated in facilitating effective use of GIS by municipal Town & Regional Planning department offices in Gauteng. This study specifically establishes that where a GIS exists at municipal level, such a system has to be made accessible to department offices within. This could be achieved either through appropriate development of the current inadequate intranet and/or the Internet, or further the implementation of a smaller GIS in department offices without a GIS. In addition, short courses should be offered in GIS for employees who did not have GIS as a subject when they qualified as well as to lecturers at tertiary institutions, who are not qualified to teach GIS. The offering of these GIS short courses can be supported through the developing of GIS study material tailored for Town & Regional Planners. These interventions, if implemented, will contribute to better GIS availability in municipal Town & Regional Planning department offices in Gauteng as well as GIS training of the Town & Regional Planning profession as a whole, resulting in more effective use of GIS. , Dr. L.G.C. Scheepers
- Full Text:
Information requirements for the integration of environmental impact assessment in the greater Florida Lake development area
- Authors: Koekemoer, Pieter
- Date: 2012-08-29
- Subjects: Environmental impact analysis , Environmental impact analysis - South Africa - Johannesburg , Environmental law - South Africa , Geographic information systems
- Type: Mini-Dissertation
- Identifier: uj:3414 , http://hdl.handle.net/10210/6811
- Description: M.Sc. , The city of today is a major performer for the secondary sector of the economy. Manufacturing and processing facilities not only provide the city with the essential commodity inputs but also provide the means of living for the populace. Of late, ad-hoc decisions for industrial development have led to an adverse impact on the local environment at costs which are much higher than the benefits actually accrued. In view of the deteriorating environmental conditions in and around industrial townships, it has become necessary to account for the environment while planning for such areas. South African EIA regulations promulgated in 1997 require that environmental parameters are to be taken into consideration with proposed development. To enable the equitable evaluation of the assessments, the same base information would need to be used for all proposals. This study aims to identify the information requirements and responsibilities at local government level to enable equitable evaluation of EIA's as part of their development impact assessment process for proposed development. The information requirements are illustrated at hand of the Proposed Greater Florida Lake Urban Development Plan adopted by the Western Metropolitan Local Council of the Greater Johannesburg Metropolitan Council.
- Full Text:
- Authors: Koekemoer, Pieter
- Date: 2012-08-29
- Subjects: Environmental impact analysis , Environmental impact analysis - South Africa - Johannesburg , Environmental law - South Africa , Geographic information systems
- Type: Mini-Dissertation
- Identifier: uj:3414 , http://hdl.handle.net/10210/6811
- Description: M.Sc. , The city of today is a major performer for the secondary sector of the economy. Manufacturing and processing facilities not only provide the city with the essential commodity inputs but also provide the means of living for the populace. Of late, ad-hoc decisions for industrial development have led to an adverse impact on the local environment at costs which are much higher than the benefits actually accrued. In view of the deteriorating environmental conditions in and around industrial townships, it has become necessary to account for the environment while planning for such areas. South African EIA regulations promulgated in 1997 require that environmental parameters are to be taken into consideration with proposed development. To enable the equitable evaluation of the assessments, the same base information would need to be used for all proposals. This study aims to identify the information requirements and responsibilities at local government level to enable equitable evaluation of EIA's as part of their development impact assessment process for proposed development. The information requirements are illustrated at hand of the Proposed Greater Florida Lake Urban Development Plan adopted by the Western Metropolitan Local Council of the Greater Johannesburg Metropolitan Council.
- Full Text:
Evaluasie van die waarde van 'n GIS vir die RAU-Alumnibestuur binne omgewingsbestuur
- Authors: Mare, Willem Hendrik
- Date: 2009-02-05T07:09:29Z
- Subjects: Randse Afrikaanse Universiteit alumni and alumnae , Geographic information systems , Environmental management
- Type: Thesis
- Identifier: uj:8070 , http://hdl.handle.net/10210/2000
- Description: M.A. , The value of RAU as educational institution can be measured by the success being achieved by its graduates in the professional world in helping to improve economical, socio-political and educational development. To monitor and manage these environmental aims sensibly, it is essential for RAU to gather enough information regarding its alumni within electronically defined magisterial districts and postal code cells on a continuous basis. This research investigates the suitability of a geographical information system (GIS) to help highly qualified alumni through healthy management and useful information by the Alumni Society to develop a higher order quality environment. It is found and demonstrated that appropriate software, for example MAPINFO coupled to geographical quantified data provides a powerful means for mapping and analysis. Incorporating population statistics, environmental problems, employer evaluation, etc. into the data base, will enhance the powerfulness of such an environment-managerial system for the RAU Alumni Society in todays highly developed technological world.
- Full Text:
- Authors: Mare, Willem Hendrik
- Date: 2009-02-05T07:09:29Z
- Subjects: Randse Afrikaanse Universiteit alumni and alumnae , Geographic information systems , Environmental management
- Type: Thesis
- Identifier: uj:8070 , http://hdl.handle.net/10210/2000
- Description: M.A. , The value of RAU as educational institution can be measured by the success being achieved by its graduates in the professional world in helping to improve economical, socio-political and educational development. To monitor and manage these environmental aims sensibly, it is essential for RAU to gather enough information regarding its alumni within electronically defined magisterial districts and postal code cells on a continuous basis. This research investigates the suitability of a geographical information system (GIS) to help highly qualified alumni through healthy management and useful information by the Alumni Society to develop a higher order quality environment. It is found and demonstrated that appropriate software, for example MAPINFO coupled to geographical quantified data provides a powerful means for mapping and analysis. Incorporating population statistics, environmental problems, employer evaluation, etc. into the data base, will enhance the powerfulness of such an environment-managerial system for the RAU Alumni Society in todays highly developed technological world.
- Full Text:
Requirements of a web-based geographic information system clearinghouse
- Authors: Mearns, Martie Alèt
- Date: 2012-09-12
- Subjects: Geographic information systems , Online information services -- Evaluation , Information storage and retrieval systems -- Geography , World Wide Web , Metadata
- Type: Thesis
- Identifier: uj:10153 , http://hdl.handle.net/10210/7532
- Description: M.Inf. , Users of geographic information systems (GIS) are often faced with a challenge with regard to identification, location and overall access to digital data used in the application of GIS. The selection of the appropriate data from the large volumes available, also gaining access to available data and the establishment of the distribution of data from one central source are necessary tasks in order to improve the dissemination of GIS data. However, these are difficult tasks due to many users being unaware of the full range of available digital GIS data. A mechanism that could assist in improving access to digital GIS data is the Webbased GIS clearinghouse. This study was initiated to determine the requirements of GIS clearinghouses for optimum accessibility to digital GIS data. A literature study was conducted to investigate the nature of data that is used in GIS clearinghouses, the current trends in GIS data on the Web and the unique characteristics of the Web that can increase accessibility to digital GIS data. A selection of clearinghouses was made and these were evaluated in order to determine variables that can be translated into criteria from which a model for the evaluation of GIS clearinghouses could be established. This model can act as a working document or check-list for users to evaluate GIS clearinghouses, or for designers to create new or improve existing GIS clearinghouses.
- Full Text:
- Authors: Mearns, Martie Alèt
- Date: 2012-09-12
- Subjects: Geographic information systems , Online information services -- Evaluation , Information storage and retrieval systems -- Geography , World Wide Web , Metadata
- Type: Thesis
- Identifier: uj:10153 , http://hdl.handle.net/10210/7532
- Description: M.Inf. , Users of geographic information systems (GIS) are often faced with a challenge with regard to identification, location and overall access to digital data used in the application of GIS. The selection of the appropriate data from the large volumes available, also gaining access to available data and the establishment of the distribution of data from one central source are necessary tasks in order to improve the dissemination of GIS data. However, these are difficult tasks due to many users being unaware of the full range of available digital GIS data. A mechanism that could assist in improving access to digital GIS data is the Webbased GIS clearinghouse. This study was initiated to determine the requirements of GIS clearinghouses for optimum accessibility to digital GIS data. A literature study was conducted to investigate the nature of data that is used in GIS clearinghouses, the current trends in GIS data on the Web and the unique characteristics of the Web that can increase accessibility to digital GIS data. A selection of clearinghouses was made and these were evaluated in order to determine variables that can be translated into criteria from which a model for the evaluation of GIS clearinghouses could be established. This model can act as a working document or check-list for users to evaluate GIS clearinghouses, or for designers to create new or improve existing GIS clearinghouses.
- Full Text:
Mobile GIS for construction quality managers and surveyors
- Arora, Nishant, Ogra, Aurobindo
- Authors: Arora, Nishant , Ogra, Aurobindo
- Date: 2012
- Subjects: Construction projects - Quality control , Quality survey managers , Geographic information systems , ArcGIS
- Type: Article
- Identifier: uj:6276 , http://hdl.handle.net/10210/9588
- Description: In any mega construction project, quality survey managers play a vital role in judging quality of work done by different contractors and sub-contractors. Usually a quality survey manager uses a hard copy form to records the survey information and for reporting to the client. Typically, this entire process takes a week’s time or even more, there is no workflow in place for recording information and analyzing trends in irregularity by the quality managers. The requirement to capture and report quality survey observations in real time evoked a need to research on mechanism for recording the observations using smart phone and existing GIS infrastructure without any development on smart phone and mobile devices. An integrated solution using an editable ArcGIS Server feature service and ArcGIS online web maps was developed in order to perform the quality survey. The paper describes the mobile GIS solution for construction projects. The solution allows recording observations in a real time environment through a user-friendly interface and workflow driven process. It also allows users to capture the picture and attach it to an editable feature service. The client can view this information in real time using ArcGIS online or in the enterprise geodatabase. The use of the Esri online ensures restrictions on accessibility of the content and takes advantage over other application because no programming or development is required. In addition, the information is stored in Oracle database and used for analysis in future, based on the changing reporting requirements. The developed solution saved on time, money and is easy to use and deploy.
- Full Text:
- Authors: Arora, Nishant , Ogra, Aurobindo
- Date: 2012
- Subjects: Construction projects - Quality control , Quality survey managers , Geographic information systems , ArcGIS
- Type: Article
- Identifier: uj:6276 , http://hdl.handle.net/10210/9588
- Description: In any mega construction project, quality survey managers play a vital role in judging quality of work done by different contractors and sub-contractors. Usually a quality survey manager uses a hard copy form to records the survey information and for reporting to the client. Typically, this entire process takes a week’s time or even more, there is no workflow in place for recording information and analyzing trends in irregularity by the quality managers. The requirement to capture and report quality survey observations in real time evoked a need to research on mechanism for recording the observations using smart phone and existing GIS infrastructure without any development on smart phone and mobile devices. An integrated solution using an editable ArcGIS Server feature service and ArcGIS online web maps was developed in order to perform the quality survey. The paper describes the mobile GIS solution for construction projects. The solution allows recording observations in a real time environment through a user-friendly interface and workflow driven process. It also allows users to capture the picture and attach it to an editable feature service. The client can view this information in real time using ArcGIS online or in the enterprise geodatabase. The use of the Esri online ensures restrictions on accessibility of the content and takes advantage over other application because no programming or development is required. In addition, the information is stored in Oracle database and used for analysis in future, based on the changing reporting requirements. The developed solution saved on time, money and is easy to use and deploy.
- Full Text:
- «
- ‹
- 1
- ›
- »