Acoustics in South African classrooms: Regulations versus reality

2021 ◽  
pp. 1351010X2110369
Author(s):  
Coralie van Reenen ◽  
Chrisna du Plessis
Keyword(s):  
Urban Schools ◽  
South African ◽  
Noise Level ◽  
Small Body ◽  
Design Guidelines ◽  
National Standard ◽  
Mitigation Measures ◽  
Reverberation Time ◽  
Acoustic Conditions

This research set out to broaden the pool of evidence regarding the acoustic conditions at schools in South Africa. A review of local and international literature, standards and design guidelines shows that the ideal classroom acoustic conditions of 35 dBA ambient and 0.7 s reverberation time are required to enable a suitable environment for teaching and learning. A review of local literature revealed a very small body of knowledge regarding actual acoustic conditions and monitoring of classroom acoustics and that these cases demonstrated ambient noise levels in classrooms (whether occupied or unoccupied) to be above the recommendations of the relevant South African National Standard (SANS 10103). The limited local research promted the need for this case study. The findings of a province-wide survey of urban schools showed that traffic noise is the main source of noise disturbance in schools. A case study of five schools showed that the average outdoor noise level at schools exposed to traffic throughout the day is 63.3 dBA and the average indoor noise level at these schools when classrooms are unoccupied is approximately 58 dBA, which is significantly higher than the requirement. The reverberation time in classrooms was between 0.6 and 1.75 s. It is concluded that the current acoustic conditions in South African urban schools is poor when evaluated against the South African National Standards. However, since this is based on only five case studies, a broader study is required to understand the general conditions and establish suitable mitigation measures.

The Socio-Economic Challenges of South African Indigenous Musicians: A Case Study of Venda-Based Vho-Ntshengedzeni Mamphodo

2019 ◽  
Vol 29 (1) ◽  
Author(s):  
N G Mugovhani ◽  
Lebogang Lance Nawa
Keyword(s):  
South Africa ◽  
South African ◽  
Empirical Data ◽  
Cultural Policy ◽  
Qualitative Case Study ◽  
Arts Management ◽  
Black South African ◽  
Indigenous Music ◽  
Entire Country

This article discusses and raises awareness about the socio-economic plight of indigenous musicians in South Africa. Through a qualitative case study of the Venda musician, Vho-Talelani Andries Ntshengedzeni Mamphodo, dubbed the “Father of mbila music,” the article highlights the fact that the welfare of Black South African artists, particularly indigenous musicians in South Africa, is generally a precarious affair. Their popularity, at the height of their careers, sometimes masks shocking details of exploitation, neglect, and the poverty they are subjected to, which are exposed only after they have died. Empirical data identifies this as a symptom of, among other things, cultural policy and arts management deficiencies in the promotion of indigenous music. The article aims to find ways to redress this unfortunate situation, which is partially a product of general apathy and scant regard that these artists have perennially been subjected to, even by their own governments, as well as some members of their societies. All these factors mentioned are compounded by ignorance on the part of South African artists. Part of the objective of this study was to establish whether the exposition of the Vhavenda musicians is a typical example of all Black South African indigenous musicians and, if this is the case, whether the suggested ways to redress this unfortunate situation could contribute to or play a role in alleviating the plight of such artists in the entire country.

Case study and event analysis for mitigation of unpredictable volcanic hazard

Impact ◽  
2020 ◽  
Vol 2020 (3) ◽  
pp. 26-28
Author(s):  
Tsukasa Ohba
Keyword(s):  
At Risk ◽  
Graduate School ◽  
Volcanic Hazard ◽  
Hazard Mitigation ◽  
Scientific Discipline ◽  
Mitigation Measures ◽  
Event Analysis ◽  
Traditional Methods ◽  
Risk Communities

Volcanology is an extremely important scientific discipline. Shedding light on how and why volcanoes erupt, how eruptions can be predicted and their impact on humans and the environment is crucial to public safety, economies and businesses. Understanding volcanoes means eruptions can be anticipated and at-risk communities can be forewarned, enabling them to implement mitigation measures. Professor Tsukasa Ohba is a scientist based at the Graduate School of International Resource Studies, Akita University, Japan, and specialises in volcanology and petrology. Ohba and his team are focusing on volcanic phenomena including: phreatic eruptions (a steam-driven eruption driven by the heat from magma interacting with water); lahar (volcanic mudflow); and monogenetic basalt eruptions (which consist of a group of small monogenetic volcanoes, each of which erupts only once). The researchers are working to understand the mechanisms of these phenomena using Petrology. Petrology is one of the traditional methods in volcanology but has not been applied to disastrous eruptions before. The teams research will contribute to volcanic hazard mitigation.

What Matters to South African Bank Customers? A Case Study of four Main South African Banks

2015 ◽  
Vol 6 (1and2) ◽  
Author(s):  
Kingstone Mutsonziwa
Keyword(s):  
Customer Satisfaction ◽  
South African ◽  
Language Usage ◽  
Face To Face ◽  
Bank Resolution ◽  
African Context ◽  
Key Drivers ◽  
Investment Advice

This paper is a follow-up article based on the first article titled Customers speak for themselves: A case of Customer Satisfaction in the four Main South African Banks. Customer satisfaction within the banking industry is very important in the South African context. Although banks are trying their best to give their customers the best service, it is important to continuously measure customer satisfaction and identify service attributes that contribute to overall customer satisfaction for the banks. The data used in the analysis is based on a quantitative survey of 500 randomly selected customers in Pretoria, Johannesburg, Durban and Cape Town were interviewed using a face to face methodology. The key drivers of overall customer satisfaction based on regression analysis for the different banks were helpfulness and innovativeness (ABSA), helpfulness, innovativeness of the bank, resolution of problems and investment advice (FNB), language usage and friendliness of service consultants (Nedbank), innovativeness of the bank, investment advice and use of language (Standard bank). These attributes were important to the overall customer satisfaction and need to be closely monitored by the management of these banks.

Opera and the South African Political

2019 ◽  
pp. 289-311
Author(s):  
Christopher Ballantine
Keyword(s):  
South Africa ◽  
South African ◽  
Singing Voice ◽  
The South ◽  
Sociopolitical Context ◽  
Creating Meaning ◽  
Empirical Means

Christopher Ballantine’s focus is on timbre, in particular the timbre of the singing voice, and how this combines with the imagination to create meaning. His investigation is largely philosophical; but the growth in popularity of opera in post-apartheid South Africa provides empirical means for Ballantine to indicate this powerful but analytically neglected way of creating meaning in the performance of music. His case study shows how timbre can produce musical experiences that have a particular, and often surprising, resonance. Through interviews with leading figures in South African opera, Ballantine demonstrates that timbre is a vital wellspring of imagined meaning; it should especially be seen thus if we seek to understand the singing voice in a sociopolitical context such as that of South Africa during and after apartheid.

Reimagining Intersectionality and Social Exclusion in South Africa

2020 ◽  
Author(s):  
Khosi Kubeka ◽  
Sharmla Rama
Keyword(s):  
South Africa ◽  
South African ◽  
Social Exclusion ◽  
Social Relations ◽  
South African Context ◽  
Social Division ◽  
Common Reference ◽  
Local Contexts ◽  
African Context

Combining the theories of intersectionality and social exclusion holds the potential for structural and nuanced interpretations of the workings of power, taking systemic issues seriously but interpreting them though social relations that appear in local contexts. An intersectional analysis of social exclusion demonstrates to what extent multiple axes of social division—be they race, age, gender, class, disability or citizenship—intersect to result in unequal and disparate experiences for groups of youth spatially located in particular communities and neighborhoods. A common reference point is therefore power and how it manifests at the intersection of the local and global. A South African case study is used to explore the subjective measures and qualitative experiences of intersectionality and social exclusion further. The unique ways that language intersects with space, neighborhood, and race in the South African context, enables opportunities in education and the labor market, with profound implications for forms of social exclusion.

scholarly journals A Conflict between Traditional Flood Measures and Maintaining River Ecosystems? A Case Study Based upon the River Lærdal, Norway

Water ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 1884
Author(s):  
Ana Juárez ◽  
Knut Alfredsen ◽  
Morten Stickler ◽  
Ana Adeva-Bustos ◽  
Rodrigo Suárez ◽  
...  
Keyword(s):  
Remote Sensing Data ◽  
Freshwater Ecosystems ◽  
River Channel ◽  
Flood Mitigation ◽  
Mitigation Measures ◽  
Flood Events ◽  
Protection Measures ◽  
River Ecosystems ◽  
Hydraulic Models

Floods are among the most damaging of natural disasters, and flood events are expected to increase in magnitude and frequency with the effects of climate change and changes in land use. As a consequence, much focus has been placed on the engineering of structural flood mitigation measures in rivers. Traditional flood protection measures, such as levees and dredging of the river channel, threaten floodplains and river ecosystems, but during the last decade, sustainable reconciliation of freshwater ecosystems has increased. However, we still find many areas where these traditional measures are proposed, and it is challenging to find tools for evaluation of different measures and quantification of the possible impacts. In this paper, we focus on the river Lærdal in Norway to (i) present the dilemma between traditional flood measures and maintaining river ecosystems and (ii) quantify the efficiency and impact of different solutions based on 2D hydraulic models, remote sensing data, economics, and landscape metrics. Our results show that flood measures may be in serious conflict with environmental protection and legislation to preserve biodiversity and key nature types.

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