Showing items 1 - 20 of 32

Your selections:

A combination of remote sensing and social media data for assessing urban sprawl in morogoro, Tanzania

- Sumari, Neema S., Ujoh, Fanan, Musakwa, Walter, Mandela, Paulo J.

A framework for the opperationalisation of Build-to-Rent housing in Johannesburg, South Africa

- Kambarami, Kushinga, Gumbo, Trynos, Musakwa, Walter

  • Authors: Kambarami, Kushinga , Gumbo, Trynos , Musakwa, Walter
  • Date: 2021
  • Subjects: Housing , Build-to-rent , Public-Private Partnerships
  • Language: English
  • Type: Article
  • Identifier: http://hdl.handle.net/10210/483469 , uj:43879 , Citation: Kambarami, K., Gumbo, T. & Musakwa, W. 2021. A framework for the opperationalisation of Build-to-Rent housing in Johannesburg, South Africa.
  • Description: Abstract: Build-to-Rent is an emerging long-term housing asset class and alternative housing product that is gaining popularity in the Europe, North America and Australia. Build-to-Rent is a high-end, long-term residential rental product, built and operated by specialist developers for a single institutional owner. This paper uses a summative content analysis approach to identify key stakeholders out of which a framework for the adoption of Build-to- Rent for the middle-income housing market in Johannesburg, South Africa is developed. The model is based on collaborative planning and systems dynamics approaches. A literature review of existing legislative and policy documents forms the basis of a key stakeholders’ register within South Africa’s existing institutional and legislative frameworks. This is followed by the proposal of the Collaborative-Integrated Operational Framework (CIOF) which may be adopted in order to mainstream Build-to-Rent in the Johannesburg housing sector. The findings demonstrate that there exists a well-established policy environment in South Africa, amenable to the adoption of Build-to-Rent in Johannesburg. The need for a collaborative planning approach, which fosters buy-in from all spheres of government and other stakeholders within the housing sector is further reinforced through the development of this framework.
  • Full Text:

Applicability of R statistics in analyzing landslides spatial patterns in Northern Turkey

- Althuwaynee, Omar F., Musakwa, Walter, Gumbo, Trynos, Reis, Selçuk

  • Authors: Althuwaynee, Omar F. , Musakwa, Walter , Gumbo, Trynos , Reis, Selçuk
  • Date: 2017
  • Subjects: Landslides , Spatial pattern , G-f functions
  • Language: English
  • Type: Conference proceedings
  • Identifier: http://hdl.handle.net/10210/256044 , uj:26871 , Citation: Althuwaynee, O.F. et al. 2017. Applicability of R statistics in analyzing landslides spatial patterns in Northern Turkey.
  • Description: Abstract: Statistical analysis of rainfall-triggered landslides inventory is a key for landslide hazard and risk prediction analysis of susceptible areas, also, it acts as a vital input into current/future development plans of decision makers. The main objective of the study is to test if the inventory locations has spatial auto-correlation; that could either be clustering (spatial attraction), dispersed or random distribution (spatial independency). Two categories of spatial distance functions were applied, first using, first-order distance analysis using Quadrat Counts function and kernel density analysis. Second category, used second order distance analysis includes Diggle’s empty space F-function and nearest neighbor distance G-function, and also, more sophisticated Ripley’s K-function, which evaluates the distribution of all neighbor distances within the space taking in consideration the edge correction effect. Based on the generated curves by the G, F and K functions, we observed that landslides locations clearly tend to be clustered in certain areas rather than randomly distributed. Eventually, Moran’s I autocorrelation function used to find where the highest amount of landslides are clustered using four conditioning factors (Elevation, Slope, Land-cover and Geology).This study illustrations and confirm the landslides distribution pattern in most landslide prone area of Trabzon city, northern turkey. The current study aims to facilitate the integration between spatial data and the coding in R environment through using an extensive research libraries and tools.
  • Full Text:

Data on strategically located land and spatially integrated urban human settlements in South Africa

- Musakwa, Walter

Detecting land degradation in Southern Africa using Time Series Segment and Residual Trend (TSS-RESTREND)

- Li, Zidong, Wang, Shaui, Song, Shuang, Wang, Yaping, Musakwa, Walter

Developing a decision support system to identify strategically located land for land reform in South Africa

- Musakwa, Walter, Makoni, E. N., Kangethe, M., Segooa, L.

  • Authors: Musakwa, Walter , Makoni, E. N. , Kangethe, M. , Segooa, L.
  • Date: 2014
  • Subjects: Land reform - South Africa. , Development planning - South Africa , Geographic information systems - South Africa , Decision support systems
  • Type: Article
  • Identifier: uj:4871 , http://hdl.handle.net/10210/12547
  • Description: Land reform is identified as a key tool in fostering development in South Africa. With two decades after the advent of democracy in South Africa, the land question remains a critical issue for policy makers. A number of frameworks have been put in place by the government to identify land which is strategically located for land reform. However, many of these frameworks are not well aligned and have hampered the government’s land reform initiative in promoting inclusive development. Strategically located land is herein defined as land parcels that are well positioned for the promotion of agriculture, human settlements, rural and tourism development. Accordingly, there is a need to develop a decision tool which facilitates the identification of strategically located land for development. This study proposes the use of geographic information systems (GIS), earth observation (EO) data and multi-criteria decision making (MCDM) to develop a spatial decision support system (SDSS) to identify strategically located land for land reform. The SDDS was therefore designed using GIS, EO data and MCDM to create an index for identification of strategically located land. Expert-led workshops were carried out to ascertain criteria for identifying strategically located land and the analytical hierarchy process (AHP) was utilised used to weight the criteria. The study demonstrates that GIS and EO are invaluable tools in facilitating evidence-based decisions for land reform. However, there is need for capacity building on GIS and EO in government departments responsible for land reform and development planning. The study suggests that there is an urgent need to develop sector specific criteria for the identification of strategically located land for inclusive development.
  • Full Text:

Developing an urban sustainability toolbox using earth observation data and GIS for monitoring rapid urbanisation in developing countries

- Musakwa, Walter

  • Authors: Musakwa, Walter
  • Date: 2013
  • Subjects: Urban planning , Sustainable urban development , Earth observation , Decision consequence analysis , Geographic Information systems
  • Type: Article
  • Identifier: uj:4951 , http://hdl.handle.net/10210/13051
  • Description: Urban planners require data to monitor sustainable urban development. Accordingly this study is a synthesis of a studies by Musakwa (2013) and Musakwa and Van Niekerk (2013) who evaluated the potential of earth observation (EO) for monitoring and modeling sustainable land use in urban centers using Stellenbosch, South Africa as a case study. The unavailability, unreliability, outdatedness and unstandardised nature of urban land use planning data in developing countries was the motivation for the investigation. Many local authorities are inadequately equipped to plan for sustainable development in hyperchanging environments. Because sustainable land use, like sustainable development, are elusive concepts to put into practice in routine decision-making, an emerging structured framework, decision consequence analysis (DCA) was proposed to aid decision making for sustainable urban land use planning. DCA breaks complex problems, such as sustainable urban development, into increasingly smaller units until the particular component can be accurately analysed and understood within the context of the overall problem. Therefore, sustainable urban land use was divided into three themes, namely land use change and land use mix, urban sprawl and the urban built-up area.
  • Full Text:

Developing an urban sustainability toolbox using earth observation data and GIS for monitoring rapid urbanisation in developing countries

- Musakwa, Walter, Van Niekerk, Adriaan, Mbinza, A.

Earth observation for sustainable urban planning in developing countries: needs, trends, and future directions

- Musakwa, Walter, Van Niekerk, Adriaan

Ecotourism, past, current and future perspectives : a bibliometric review between 2001 to 2018

- Shasha, Ziphozakhe Theophilus, Huaping, Sun, Geng, Yong, Musakwa, Walter, Tian, Xu, Zhong, Shaozhuo

  • Authors: Shasha, Ziphozakhe Theophilus , Huaping, Sun , Geng, Yong , Musakwa, Walter , Tian, Xu , Zhong, Shaozhuo
  • Date: 2020
  • Subjects: Ecotourism , Green travel , Low carbon tourism
  • Language: English
  • Type: Article
  • Identifier: http://hdl.handle.net/10210/438742 , uj:38145 , Citation: Shasha, Z.T. et al. 2020. Ecotourism, past, current and future perspectives : a bibliometric review between 2001 to 2018.
  • Description: Abstract: Ecotourism is natural based travel that conserves the environment, sustains the well-being of the local communities, and involves environmental interpretation and education. A number of literature reviews have been published focusing on specific aspects of the ecotourism market segmentation, ecological impacts of wildlife viewing, and community-based ecotourism, but there has been minimal attention to critical areas such as quality control, the industry, external environments or institutions. In order to further promote related studies, it is important to conduct a comprehensive review on ecotourism so that recent research progresses can be summarized and future research directions can be identified. Accordungly, this paper aims to conduct a bibliometric review on ecotourism to glean the past, current and future perspectives on ecotourism. Based on 1,889 articles published from 2001 to 2018 and searched from Web of Science, a systematic method combining bibliometric analysis and network analysis is applied to uncover the dynamic trends, academic collaboration and research hotspots. Results show that the overall publication quantity had been gradually improved. The key journals include Journal of Hospitality and Tourism Management, Annals of Tourism Research, Conservation Biology and Biological Conservation. Authors from USA have the most publications and international co-authorships, followed by Australia and England, while the most influential institution is the Chinese Academy of Science followed by Griffith University. Moreover, research keywords have been identified, including ecotourism, management, biodiversity, national park, sustainability and sustainable tourism. In order to further improve research in this field, it is crucial to combine different methods so that more innovative perspectives can be presented. Research findings from this study will provide limitations, and suggestions for future research.
  • Full Text:

Estimation of woody plant species diversity during a dry season in a savanna environment using the spectral and textural information derived from WorldView-2 imagery

- Fundisi, Emmanuel, Musakwa, Walter, Ahmed, Fethi B., Tesfamichael, Solomon G.

  • Authors: Fundisi, Emmanuel , Musakwa, Walter , Ahmed, Fethi B. , Tesfamichael, Solomon G.
  • Date: 2020
  • Language: English
  • Type: Article
  • Identifier: http://hdl.handle.net/10210/435727 , uj:37768 , Citation: Fundisi E, Musakwa W, Ahmed FB, Tesfamichael SG (2020) Estimation of woody plant species diversity during a dry season in a savanna environment using the spectral and textural information derived from WorldView-2 imagery. PLoS ONE 15(6): e0234158. https://doi.org/ 10.1371/journal.pone.0234158
  • Description: Abstract: Remote sensing techniques are useful in the monitoring of woody plant species diversity in different environments including in savanna vegetation types. However, the performance of satellite imagery in assessing woody plant species diversity in dry seasons has been understudied. This study aimed to assess the performance of multiple Gray Level Co-occurrence Matrices (GLCM) derived from individual bands of WorldView-2 satellite imagery to quantify woody plant species diversity in a savanna environment during the dry season. Woody plant species were counted in 220 plots (20 m radius) and subsequently converted to a continuous scale of the Shannon species diversity index. The index regressed against the GLCMs using the all-possible-subsets regression approach that builds competing models to choose from. Entropy GLCM yielded the best overall accuracy (adjusted R2: 0.41−0.46; Root Mean Square Error (RMSE): 0.60−0.58) in estimating species diversity. The effect of the number of predicting bands on species diversity estimation was also explored. Accuracy generally increased when three–five bands were used in models but stabilised or gradually decreased as more than five bands were used. Despite the peak accuracies achieved with three–five bands, performances still fared well for models that used fewer bands, showing the relevance of few bands for species diversity estimation. We also assessed the effect of GLCM window size (3×3, 5×5 and 7×7) on species diversity estimation and generally found inconsistent conclusions. These findings demonstrate the capability of GLCMs combined with high spatial resolution imagery in estimating woody plants species diversity in a savanna environment during the dry period. It is important to test the performance of species diversity estimation of similar environmental set-ups using widely available moderate-resolution imagery.
  • Full Text:

Implementation of a science-action partnership to manage a threatened ecosystem in an urban context

- Musakwa, Walteressica, Rouget, Mathieu, Musakwa, Walter, Smit, A.J., Slotow, Rob, Roberts, D., Boon, R., Douwes, E., O'Donoghue, S., Downs, C.T., Murkherjee, Shomen, Mwabvu, Tarombera, Odindi, John, Odindo, Alfred, Prochess, Serban, Ramdhani, Syd, Murkherjee, J.Ray, Naidoo , S., Schoeman, M.C., Wale, Edilegnaw, Willows-Munro, S.

Indigenous practices of ecosystem management in a changing climate: Prospects for ecosystem-based adaptation

- Chanza, Nelson, Musakwa, Walter

Investigating the role of benchmarking as a cost control measure : lessons from selected restaurants in Johannesburg, South Africa

- Gumbo, Matildah, Musakwa, Walter, Ingwani, Emaculate, Gumbo, Trynos

  • Authors: Gumbo, Matildah , Musakwa, Walter , Ingwani, Emaculate , Gumbo, Trynos
  • Date: 2020
  • Subjects: Benchmarking , Cost structures , Restaurants
  • Language: English
  • Type: Conference Proceedings
  • Identifier: http://hdl.handle.net/10210/481558 , uj:43638 , Citation: Gumbo, M. et al. 2020. Investigating the role of benchmarking as a cost control measure : lessons from selected restaurants in Johannesburg, South Africa.
  • Description: Abstract: Benchmarking has been used and adopted by many companies in industries as a tool for performance measurement and possible improvement. It has been difficult to implement benchmarking as cost reduction tool in the restaurant industry because of high operational costs, and also different cost structures require different cost control measures. This study evaluated the role of benchmarking as a possible cost reduction tool in the restaurant industry. The main objectives are to: (1) identify the drivers of cost in the restaurant industry; and (2) demonstrate the implication for adopting benchmarking as a cost reduction tool in the restaurant industry. The study adopted a survey research design reflecting on 5 restaurants purposively sampled and a mixed method research approach was used. Interviews and questionnaires were used for data collection. The research findings reveal that those restaurants that implemented benchmarking realized an improvement in their overall costs reduction, and have a better understanding of their cost drivers. The challenges that are faced by restaurants in implementing benchmarking included lack of consistency and inadequate resources for an effective control of the whole process. Recommendations included the need to hire well trained employees that can effectively and consistently use the resources provided.
  • Full Text:

Landscape change and its drivers : a Southern African perspective

- Musakwa, Walter, Wang, Shuai

  • Authors: Musakwa, Walter , Wang, Shuai
  • Date: 2018
  • Language: English
  • Type: Article
  • Identifier: http://ujcontent.uj.ac.za8080/10210/374137 , http://hdl.handle.net/10210/280005 , uj:30080 , Citation: Musakwa, W. & Wang, S. 2018. Landscape change and its drivers : a Southern African perspective.
  • Description: Abstract: Global environmental change is of immense importance as it shows how humans relate with nature. Within global environmental change debate landscape change analysis is a crucial cog as it expresses how humans relate with the land. Comprehending landscape changes, and its drivers are crucial in forging policies that can mitigate against negative effects of global environmental change. Research on the spatial component of mapping landscape change through land use and land cover maps is well documented in the literature. However, understating the drivers of landscape change remains poorly understood particularly from developing countries in Africa. The main drivers of landscape change in Southern Africa, are mainly attributed to local causes and global causes. The challenge is how one can adequately comprehend these drivers so as to develop sound land management practices. A framework that is transdisciplinary and that leverages on big data is proposed for the effective modeling and management of landscapes in Southern Africa.
  • Full Text:

Local community perceptions on landscape change, ecosystem services, climate change, and livelihoods in Gonarezhou National Park, Zimbabwe

- Musakwa, Walter, Mpofu, Ephraim, Nyathi, Nesisa Analisa

  • Authors: Musakwa, Walter , Mpofu, Ephraim , Nyathi, Nesisa Analisa
  • Date: 2020
  • Subjects: Landscape change , Ecosystem services , Livelihoods
  • Language: English
  • Type: Article
  • Identifier: http://hdl.handle.net/10210/424242 , uj:36273 , Musakwa, W., Mpofu, E., Nyathi, N.A.: Local community perceptions on landscape change, ecosystem services, climate change, and livelihoods in Gonarezhou National Park, Zimbabwe. DOI:10.3390/su12114610
  • Description: Abstract: Understanding humanity’s relationship with nature is crucial for the well-being and sustainable development of mankind in the face of global environmental change. Communities depend on landscapes for survival and landscapes determine if sustainable development is to be achieved. The links between landscapes, ecosystem services, livelihoods, and climate change are often complex, misunderstood, and barely studied in rural areas of Africa, where communities live side-by-side with conservation areas. Our study surveyed the perception of the nexus of landscape change, climate change, ecosystem services, and livelihoods in Gonarezhou, a national park in southeastern Zimbabwe. We also used Landsat satellite imagery to map the landscape change over 20 years to validate and to correlate with the survey data. The survey results indicated that people relied on rainfed agriculture as a means of livelihood, but droughts as a result of climate change force communities to engage in other means of livelihoods such as small-scale poaching of small game such as impala and harvesting of natural resources such as edible shrubs. Crops and livestock as provisional ecosystem services have been negatively affected by climate change and landscape change. Landsat data confirmed that there was a negative transformation of the landscape as a result of agriculture, growth in settlements, and large herbivores. However, there was also a positive landscape transformation resulting from the conservation efforts by the Gonarezhou Conservation Trust (GCT). Cultural services about education and awareness of the environment and provisional services such as wild fruits are booming. Challenges such as soil erosion, human–wildlife conflict, and minimal community benefits from conservation efforts hindered sustainable development in the study area. While changes in landscape, climate, livelihoods, and ecosystem services happened at a local scale, the underlying drivers such as politics and the economy were also identified as drivers of landscape change.
  • Full Text:

Mapping cycling patterns and trends using strava metro data in the city of Johannesburg, South Africa

- Musakwa, Walter, Selala, Kadibetso M.

Monitoring sustainable urban development using builtup area indicators: a case study of Stellenbosch, South Africa

- Musakwa, Walter, Van Niekerk, Adriaan

Monitoring Urban Sprawl and Sustainable Urban Development Using the Moran Index: A Case Study of Stellenbosch, South Africa

- Musakwa, Walter, Van Niekerk, Adriaan

No one-size-fits-all organizational solution : learning from rapid rail developments in Ethiopia and South Africa

- Musonda, Innocent, Gumbo, Trynos, Bwanyire, Boniface, Musakwa, Walter, Okoro, Chioma, Gil, Nuno

  • Disclaimer
  • Privacy
  • Copyright
  • Contact