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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Temporal assessment of atmospheric trace metals in the industrialised western Bushveld Complex / van Wyngaardt G.

Van Wyngaardt, Grizelda January 2011 (has links)
The presence of trace transition metal species in the atmosphere can be attributed to the emission of particulate matter into the atmosphere by anthropogenic activities, as well as from natural sources. Trace metals emitted into the atmosphere can cause adverse health–related and environmental problems. At present, limited data exists for trace metal concentrations in South Africa. In this investigation, the general aim was to determine the concentrations of trace metals in atmospheric aerosols in the industrialised western Bushveld Igneous Complex, as well as to link the presence of these species in the atmosphere to possible sources in the region. The measurement site was placed in Marikana, a small rural town situated 35 km east from Rustenburg in the North West Province of South Africa. It is surrounded by numerous industrial and metallurgical operations. MiniVolumeTM samplers and Teflon® filters (2 ;m pores) were utilised to collect PM2.5 and PM10 particulate samples. The MiniVolumeTM samplers were programmed to filter 5 litres of air per minute for 12 hours per day, over a six–day period. The starting time for sampling was altered every six days, in order to obtain both day and night samples. Sampling was performed for a period of one year. The collected samples were chemically analysed with inductively coupled plasma mass spectroscopy (ICP–MS). Surface analysis of the sampled filters was performed with a scanning electron microscope (SEM) in conjunction with energy–dispersive spectroscopy (EDS). The dataset was also subjected to factor analysis in an attempt to identify possible sources of trace metal species in the atmosphere. The concentrations of 27 trace metals (Be, B, Na, Mg, Al, K, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Pd, Cd, Ba, Pt, Au, Hg, Tl, Pb, U) were determined. Pd, Hg, Tl, U, Ca, Co, As, Cd, Ba and Au were above the detection limit 25% or less of the time during the sampling period. With the exception of Ni, none of the trace metals measured at Marikana during the sampling period exceeded local and international standards. Higher Ni levels were possibly due to base metal refining in the region. Pb, which is the only metal species that has a standard prescribed by the South African Department of Environmental Affairs (DEA), did not exceed any of the standards. It is also significant to refer to Hg that was below the detection limit of the analytical instrument for the entire sampling period. The impact of meteorological conditions revealed that wet removal of atmospheric PM10 trace metals was more significant than the wind generation thereof. During the dry months, the total trace metal concentrations in the PM10 fraction peaked, while PM10 particles were mostly washed out during the wet season. Wind speed showed an unexpected inverse pattern compared to wet deposition. A less significant seasonal trend was observed for the trace metal concentrations in the PM2.5 fraction, which was attributed to a faster replenishment of smaller particles into the atmosphere after rain events. Separation of trace metal concentrations into PM10–2.5 and PM2.5 fractions indicated that 79% of the total trace metal levels that were measured were in the PM2.5 fraction, which indicated a strong influence of industrial and/or combustion sources. Fractionalisation of each of the trace metal species detected showed that for each metal species, 40% and more of a specific metal was in the PM2.5 fraction, with Cr, V, Ni, Zn and Mn occurring almost completely in the PM2.5 fraction. Surface analysis with SEM supported results from the chemical analysis, which indicated that a large fraction of the particles was likely to originate from anthropogenic activities and from wind–blown dust. SEM–EDS also detected nonmetallic S that is usually associated with the Pt pyrometallurgical industry that is present in the western Bushveld Igneous Complex. Correlations between Cr, V, Ni, Zn and Mn revealed that the main sources of these species were pyrometallurgical industries. Explorative factor analysis of the unprocessed and Box–Cox transformed data for all 27 metals detected, resolved four meaningful emission sources, i.e. crustal, vanadium related, base metal related and chromium related. Comparison of trace metal species to other parameters measured (e.g. CO, BC) also indicated pyrometallurgical activities and wind–blown dust to be the main sources of trace metals in this region. / Thesis (M.Sc. (Chemistry))--North-West University, Potchefstroom Campus, 2011.
2

Temporal assessment of atmospheric trace metals in the industrialised western Bushveld Complex / van Wyngaardt G.

Van Wyngaardt, Grizelda January 2011 (has links)
The presence of trace transition metal species in the atmosphere can be attributed to the emission of particulate matter into the atmosphere by anthropogenic activities, as well as from natural sources. Trace metals emitted into the atmosphere can cause adverse health–related and environmental problems. At present, limited data exists for trace metal concentrations in South Africa. In this investigation, the general aim was to determine the concentrations of trace metals in atmospheric aerosols in the industrialised western Bushveld Igneous Complex, as well as to link the presence of these species in the atmosphere to possible sources in the region. The measurement site was placed in Marikana, a small rural town situated 35 km east from Rustenburg in the North West Province of South Africa. It is surrounded by numerous industrial and metallurgical operations. MiniVolumeTM samplers and Teflon® filters (2 ;m pores) were utilised to collect PM2.5 and PM10 particulate samples. The MiniVolumeTM samplers were programmed to filter 5 litres of air per minute for 12 hours per day, over a six–day period. The starting time for sampling was altered every six days, in order to obtain both day and night samples. Sampling was performed for a period of one year. The collected samples were chemically analysed with inductively coupled plasma mass spectroscopy (ICP–MS). Surface analysis of the sampled filters was performed with a scanning electron microscope (SEM) in conjunction with energy–dispersive spectroscopy (EDS). The dataset was also subjected to factor analysis in an attempt to identify possible sources of trace metal species in the atmosphere. The concentrations of 27 trace metals (Be, B, Na, Mg, Al, K, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Pd, Cd, Ba, Pt, Au, Hg, Tl, Pb, U) were determined. Pd, Hg, Tl, U, Ca, Co, As, Cd, Ba and Au were above the detection limit 25% or less of the time during the sampling period. With the exception of Ni, none of the trace metals measured at Marikana during the sampling period exceeded local and international standards. Higher Ni levels were possibly due to base metal refining in the region. Pb, which is the only metal species that has a standard prescribed by the South African Department of Environmental Affairs (DEA), did not exceed any of the standards. It is also significant to refer to Hg that was below the detection limit of the analytical instrument for the entire sampling period. The impact of meteorological conditions revealed that wet removal of atmospheric PM10 trace metals was more significant than the wind generation thereof. During the dry months, the total trace metal concentrations in the PM10 fraction peaked, while PM10 particles were mostly washed out during the wet season. Wind speed showed an unexpected inverse pattern compared to wet deposition. A less significant seasonal trend was observed for the trace metal concentrations in the PM2.5 fraction, which was attributed to a faster replenishment of smaller particles into the atmosphere after rain events. Separation of trace metal concentrations into PM10–2.5 and PM2.5 fractions indicated that 79% of the total trace metal levels that were measured were in the PM2.5 fraction, which indicated a strong influence of industrial and/or combustion sources. Fractionalisation of each of the trace metal species detected showed that for each metal species, 40% and more of a specific metal was in the PM2.5 fraction, with Cr, V, Ni, Zn and Mn occurring almost completely in the PM2.5 fraction. Surface analysis with SEM supported results from the chemical analysis, which indicated that a large fraction of the particles was likely to originate from anthropogenic activities and from wind–blown dust. SEM–EDS also detected nonmetallic S that is usually associated with the Pt pyrometallurgical industry that is present in the western Bushveld Igneous Complex. Correlations between Cr, V, Ni, Zn and Mn revealed that the main sources of these species were pyrometallurgical industries. Explorative factor analysis of the unprocessed and Box–Cox transformed data for all 27 metals detected, resolved four meaningful emission sources, i.e. crustal, vanadium related, base metal related and chromium related. Comparison of trace metal species to other parameters measured (e.g. CO, BC) also indicated pyrometallurgical activities and wind–blown dust to be the main sources of trace metals in this region. / Thesis (M.Sc. (Chemistry))--North-West University, Potchefstroom Campus, 2011.
3

Key success factors in managing the visitor experience at the Cape Town International Jazz Festival / Williams K.

Williams, Karen. January 2011 (has links)
The event tourism industry is one of the fastest growing tourism industries worldwide. One type of event that is growing immensely is festivals, especially music festivals such as the Cape Town International Jazz Festival. As a result of the fast growing pace of festivals, it has become crucial for a festival to sustain itself in the market place to stay competitive. The Cape Town International Jazz Festival (the Jazz Festival) is a fast growing music festival and hosts numerous well–known local and international jazz artists, as well as young up–and–coming artists. For this exciting Jazz Festival to keep growing, it needs to be sustainable. To achieve this, the organisers and managers of the Jazz Festival need to know what is important to the visitors of the Jazz Festival, so they can fulfil their needs. This in turn leads to satisfied visitors that will return to the Jazz Festival and keep the festival sustainable. Generally speaking, music festivals have a more professional management approach than other tourism events and thus are more likely to be more successful. Key Success Factors (KSFs) are a precondition for the success of any event and will influence the competitiveness of the event in the market place. It is imperative for organisers to identify the KSFs that are important to the visitors so as to provide them with a satisfactory experience. This will also assist in measuring the achievement of the event’s goals and objectives. The main purpose of this study was to determine the KSFs in managing the visitor experience at the Cape Town International Jazz Festival. To reach this goal, the study is divided into two articles. Research for both articles was conducted at the Cape Town International Jazz Festival through distributing 400 questionnaires randomly throughout the two days of the festival, which was held on 3 and 4 April 2010. Article 1 is titled: “Key aspects for efficient and effective management of the Cape Town International Jazz Festival: a visitor’s perspective”. The main purpose of this article was to identify the Key Success Factors in managing the Cape Town International Jazz Festival, to determine what visitors deemed as important when attending the Jazz Festival. A factor analysis was done to achieve this goal. Results indicated that Hospitality Factors, Quality Venues, Information Dissemination, Marketing and Sales, and Value and Quality are the KSFs that are of importance when managing the Jazz Festival. The results of this article provided festival managers with valuable information when organising an event such as the Cape Town International Jazz Festival. Article 2 is titled: “The importance of different Key Success Factors to different target markets of the Cape Town International Jazz Festival based on travel motives”. The main purpose of this article was to determine whether different target markets that are visiting the Jazz Festival, deemed different KSFs as important, depending on their travel motives. An analysis of variance (ANOVA) was done to determine if there were statistically significant differences between the three clusters and the KSFs that they deemed important. Results showed that the three clusters, namely, Escapists, Culture Seekers and Jazz Lovers, deemed different KSFs as important when they are visiting the Jazz Festival. The results of this article gave festival organisers and marketing managers insight as to which markets to focus scarce marketing resources on and which markets to keep growing, as they will sustain the festival in the long term. Therefore, this research revealed the KSFs that are of utmost importance when managing the Cape Town International Jazz Festival, and that these aspects differ for certain markets. Organisers therefore need to assess the KSFs to provide products that will satisfy the visitor in order for him/her to return each year and keep the festival competitive and sustainable. / Thesis (M.Com. (Tourism))--North-West University, Potchefstroom Campus, 2012.
4

Key success factors in managing the visitor experience at the Cape Town International Jazz Festival / Williams K.

Williams, Karen. January 2011 (has links)
The event tourism industry is one of the fastest growing tourism industries worldwide. One type of event that is growing immensely is festivals, especially music festivals such as the Cape Town International Jazz Festival. As a result of the fast growing pace of festivals, it has become crucial for a festival to sustain itself in the market place to stay competitive. The Cape Town International Jazz Festival (the Jazz Festival) is a fast growing music festival and hosts numerous well–known local and international jazz artists, as well as young up–and–coming artists. For this exciting Jazz Festival to keep growing, it needs to be sustainable. To achieve this, the organisers and managers of the Jazz Festival need to know what is important to the visitors of the Jazz Festival, so they can fulfil their needs. This in turn leads to satisfied visitors that will return to the Jazz Festival and keep the festival sustainable. Generally speaking, music festivals have a more professional management approach than other tourism events and thus are more likely to be more successful. Key Success Factors (KSFs) are a precondition for the success of any event and will influence the competitiveness of the event in the market place. It is imperative for organisers to identify the KSFs that are important to the visitors so as to provide them with a satisfactory experience. This will also assist in measuring the achievement of the event’s goals and objectives. The main purpose of this study was to determine the KSFs in managing the visitor experience at the Cape Town International Jazz Festival. To reach this goal, the study is divided into two articles. Research for both articles was conducted at the Cape Town International Jazz Festival through distributing 400 questionnaires randomly throughout the two days of the festival, which was held on 3 and 4 April 2010. Article 1 is titled: “Key aspects for efficient and effective management of the Cape Town International Jazz Festival: a visitor’s perspective”. The main purpose of this article was to identify the Key Success Factors in managing the Cape Town International Jazz Festival, to determine what visitors deemed as important when attending the Jazz Festival. A factor analysis was done to achieve this goal. Results indicated that Hospitality Factors, Quality Venues, Information Dissemination, Marketing and Sales, and Value and Quality are the KSFs that are of importance when managing the Jazz Festival. The results of this article provided festival managers with valuable information when organising an event such as the Cape Town International Jazz Festival. Article 2 is titled: “The importance of different Key Success Factors to different target markets of the Cape Town International Jazz Festival based on travel motives”. The main purpose of this article was to determine whether different target markets that are visiting the Jazz Festival, deemed different KSFs as important, depending on their travel motives. An analysis of variance (ANOVA) was done to determine if there were statistically significant differences between the three clusters and the KSFs that they deemed important. Results showed that the three clusters, namely, Escapists, Culture Seekers and Jazz Lovers, deemed different KSFs as important when they are visiting the Jazz Festival. The results of this article gave festival organisers and marketing managers insight as to which markets to focus scarce marketing resources on and which markets to keep growing, as they will sustain the festival in the long term. Therefore, this research revealed the KSFs that are of utmost importance when managing the Cape Town International Jazz Festival, and that these aspects differ for certain markets. Organisers therefore need to assess the KSFs to provide products that will satisfy the visitor in order for him/her to return each year and keep the festival competitive and sustainable. / Thesis (M.Com. (Tourism))--North-West University, Potchefstroom Campus, 2012.
5

Critical success factors for managing the visitor experience at the Kruger National Park / Willy Hannes Engelbrecht

Engelbrecht, Willy Hannes January 2011 (has links)
Nature–based tourism destinations have shown significant growth over the past decade and, with the ever increasing numbers of tourists travelling to national parks, the right management structures, goals and objectives need to be determined. South African National Parks (SANParks) manages all 22 national parks in South Africa with the Kruger National Park (KNP) being the biggest of them all and generating more than 80% of SANParks income. The KNP is one of the world’s largest parks conserving a staggering 1 962 362 ha of land which is bigger than countries such as Israel and Holland. When taking the KNP into perspective, park management must have the right management styles and factors in place to ensure that the park is managed in a sustainable manner and exceeds the expectations of the tourist to provide a memorable experience whilst visiting the KNP. The goal of this study was therefore to determine the critical management aspects or critical success factors (CSFs) needed to create a memorable visitor experience at the park. This goal was achieved by conducting a questionnaire survey at four rest camps within the KNP from 27 December 2010 to 4 January 2011. The rest camps used for the survey were: Skukuza (152 questionnaires), Berg and Dal (98 questionnaires), Lower Sabie (85 questionnaires) and Satara (101 questionnaires). During this time a total of 436 questionnaires were completed and included in further analysis. In Article 1, the key management aspects that visitors regard as important for a memorable visitor experience at the KNP were identified. These CSFs assist management in providing quality services and products for the tourist, leading to a memorable experience. A factor analysis was performed on the expectations of the tourists to national parks. There were nine CSFs identified that management can implement to ensure a memorable visitor experience. The three factors that have not yet been identified in previous research were wildlife experience, interpretation and luxuries. Other factors that have been identified were General management, Variety activities, Accommodation, Green management, Hospitality management, and Facilities. The results showed that park management needs to become aware of what the visitor sees as important factors for a memorable visitor experience and they can adapt certain aspects to improve the visitor’s experience. In Article 2, gaps within the park management were identified. These gaps were measured by taking the 62 variables and asking the tourist what their expectations were with regard to a memorable experience versus their actual/real experience at the park. A factor analysis on the expectations and the actual/real experiences was done and each of these factors was given a score. The scores of each factor were measured against one another indicating the differences and gaps in management. The twelve factors that were identified were General management, Education activities. Accommodation facilities, Green management, Information provided, Layout of the park, Wildlife, Facilities in the park, Food and Beverage management, Interpretive activities, Bookings and General services, and Outdoor activities. These twelve factors have also been grouped into three sub groups containing four factors each and either the expectations were exceeded, did not meet expectations or were neutral. The main gaps were Education, Accommodation facilities, Interpretations facilities and Wildlife. If management want to ensure a memorable visitor experience at the KNP they must not only focus on these gaps, but also strive to exceed visitors’ expectations on all levels. This research found that there are certain CSFs for managing a national park and gaps within park management that need to be addressed. These gaps or problem areas can be overcome by the implementation of a continuous evaluation process that will ensure effective and efficient management of the park. Park management can therefore improve their services and products as well as the quality thereof by knowing what the tourists see as important when visiting a national park to obtain a memorable experience that will lead to positive word of mouth, loyalty, increased revenue and sustainability of the KNP. Even though it is not a requirement of a masters’ dissertation to make a contribution, this research has made a significant contribution towards the methodology as the method applied determined the gaps in visitor experience and expectations and this has not been used before. Future research can make use of this type of method determining individuals’ expectations and experiences when visiting a national park or any other nature–based destination. / Thesis (M.Com. (Tourism))--North-West University, Potchefstroom Campus, 2012.
6

Critical success factors for managing the visitor experience at the Kruger National Park / Willy Hannes Engelbrecht

Engelbrecht, Willy Hannes January 2011 (has links)
Nature–based tourism destinations have shown significant growth over the past decade and, with the ever increasing numbers of tourists travelling to national parks, the right management structures, goals and objectives need to be determined. South African National Parks (SANParks) manages all 22 national parks in South Africa with the Kruger National Park (KNP) being the biggest of them all and generating more than 80% of SANParks income. The KNP is one of the world’s largest parks conserving a staggering 1 962 362 ha of land which is bigger than countries such as Israel and Holland. When taking the KNP into perspective, park management must have the right management styles and factors in place to ensure that the park is managed in a sustainable manner and exceeds the expectations of the tourist to provide a memorable experience whilst visiting the KNP. The goal of this study was therefore to determine the critical management aspects or critical success factors (CSFs) needed to create a memorable visitor experience at the park. This goal was achieved by conducting a questionnaire survey at four rest camps within the KNP from 27 December 2010 to 4 January 2011. The rest camps used for the survey were: Skukuza (152 questionnaires), Berg and Dal (98 questionnaires), Lower Sabie (85 questionnaires) and Satara (101 questionnaires). During this time a total of 436 questionnaires were completed and included in further analysis. In Article 1, the key management aspects that visitors regard as important for a memorable visitor experience at the KNP were identified. These CSFs assist management in providing quality services and products for the tourist, leading to a memorable experience. A factor analysis was performed on the expectations of the tourists to national parks. There were nine CSFs identified that management can implement to ensure a memorable visitor experience. The three factors that have not yet been identified in previous research were wildlife experience, interpretation and luxuries. Other factors that have been identified were General management, Variety activities, Accommodation, Green management, Hospitality management, and Facilities. The results showed that park management needs to become aware of what the visitor sees as important factors for a memorable visitor experience and they can adapt certain aspects to improve the visitor’s experience. In Article 2, gaps within the park management were identified. These gaps were measured by taking the 62 variables and asking the tourist what their expectations were with regard to a memorable experience versus their actual/real experience at the park. A factor analysis on the expectations and the actual/real experiences was done and each of these factors was given a score. The scores of each factor were measured against one another indicating the differences and gaps in management. The twelve factors that were identified were General management, Education activities. Accommodation facilities, Green management, Information provided, Layout of the park, Wildlife, Facilities in the park, Food and Beverage management, Interpretive activities, Bookings and General services, and Outdoor activities. These twelve factors have also been grouped into three sub groups containing four factors each and either the expectations were exceeded, did not meet expectations or were neutral. The main gaps were Education, Accommodation facilities, Interpretations facilities and Wildlife. If management want to ensure a memorable visitor experience at the KNP they must not only focus on these gaps, but also strive to exceed visitors’ expectations on all levels. This research found that there are certain CSFs for managing a national park and gaps within park management that need to be addressed. These gaps or problem areas can be overcome by the implementation of a continuous evaluation process that will ensure effective and efficient management of the park. Park management can therefore improve their services and products as well as the quality thereof by knowing what the tourists see as important when visiting a national park to obtain a memorable experience that will lead to positive word of mouth, loyalty, increased revenue and sustainability of the KNP. Even though it is not a requirement of a masters’ dissertation to make a contribution, this research has made a significant contribution towards the methodology as the method applied determined the gaps in visitor experience and expectations and this has not been used before. Future research can make use of this type of method determining individuals’ expectations and experiences when visiting a national park or any other nature–based destination. / Thesis (M.Com. (Tourism))--North-West University, Potchefstroom Campus, 2012.

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