scholarly journals Affordances for learning linear functions: A comparative study of two textbooks from South Africa and Germany

Pythagoras ◽  
2018 ◽  
Vol 39 (1) ◽  
Author(s):  
Kathryn Mellor ◽  
Robyn Clark ◽  
Anthony A. Essien
Keyword(s):  
South Africa ◽  
South African ◽  
Real World ◽  
Conceptual Knowledge ◽  
Qualitative Content Analysis ◽  
The Other ◽  
Linear Functions ◽  
Content Areas ◽  
Mathematical Content ◽  
The Real

Textbook content has the ability to influence mathematical learning. This study compares how linear functions are presented in two textbooks, one of South African and the other of German origin. These two textbooks are used in different language-based streams in a school in Gauteng, South Africa. A qualitative content analysis on how the topic of linear functions is presented in these two textbooks was done. The interplay between procedural and conceptual knowledge, the integration of the multiple representations of functions, and the links created to other mathematical content areas and the real world were considered. It was found that the German textbook included a higher percentage of content that promoted the development of conceptual knowledge. This was especially due to the level of cognitive demand of tasks included in the analysed textbook chapters. Also, while the South African textbook presented a wider range of opportunities to interact with the different representations of functions, the German textbook, on the other hand, included more links to the real world. Both textbooks linked ‘functions’ to other mathematical content areas, although the German textbook included a wider range of linked topics. It was concluded that learners from the two streams are thus exposed to different affordances to learn mathematics by their textbooks.

The Unwieldy Fetish

2012 ◽  
Author(s):  
Thomas Blom Hansen
Keyword(s):  
South Africa ◽  
South African ◽  
Social Mobility ◽  
New Economy ◽  
The Other ◽  
The Real ◽  
Roots Tourism ◽  
The Village

This chapter looks at the new economy of diasporic imagination that hit South Africa after 1994. It begins by examining a range of narratives of roots tourism whereby thousands of South African Indians each year travel to India in search of the village of their ancestors and for shopping and/or spiritual purification. These journeys are often complex discoveries of both the real and the imaginary India, and are almost invariably linked to desires for purification and “proper” Indianness and “culture,” which, in their turn, are spawned by social mobility and ambition. The other side of this new fascination with India's past and its emerging power as a nation is an intense interest in Bollywood films and their songs, stars, and aesthetics.

The Final ‘Thank You’

Derrida Today ◽  
2010 ◽  
Vol 3 (1) ◽  
pp. 21-36
Author(s):  
Grant Farred
Keyword(s):  
South Africa ◽  
South African ◽  
Jacques Derrida ◽  
Political Transition ◽  
The Other ◽  
World Cup ◽  
The Core ◽  
Nelson Mandela ◽  
Black President ◽  
The Moment

‘The Final “Thank You”’ uses the work of Jacques Derrida and Friedrich Nietzsche to think the occasion of the 1995 rugby World Cup, hosted by the newly democratic South Africa. This paper deploys Nietzsche's Zarathustra to critique how a figure such as Nelson Mandela is understood as a ‘Superman’ or an ‘Overhuman’ in the moment of political transition. The philosophical focus of the paper, however, turns on the ‘thank yous’ exchanged by the white South African rugby captain, François Pienaar, and the black president at the event of the Springbok victory. It is the value, and the proximity and negation, of the ‘thank yous’ – the relation of one to the other – that constitutes the core of the article. 1

Stability and Governability the Benign Effects of Party Dominance in South Africa

2020 ◽  
Vol 13 (1) ◽  
pp. 56-75
Author(s):  
Ainara Mancebo
Keyword(s):  
South Africa ◽  
South African ◽  
Trade Unions ◽  
African National Congress ◽  
The Other ◽  
Democratic Transitions ◽  
African Countries ◽  
National Congress ◽  
Independence Era ◽  
Party Dominance

A tripartite alliance formed by the African National Congress, the South African Communist Party and the Congress of South African Trade Unions has been ruling the country with wide parliamentarian majorities. The country remains more consensual and politically inclusive than any of the other African countries in the post-independence era. This article examines three performance’s aspects of the party dominance systems: legitimacy, stability and violence. As we are living in a period in which an unprecedented number of countries have completed democratic transitions, it is politically and conceptually important that we understand the specific tasks of crafting democratic consolidation.

scholarly journals GazeEMD: Detecting Visual Intention in Gaze-Based Human-Robot Interaction

Robotics ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 68
Author(s):  
Lei Shi ◽  
Cosmin Copot ◽  
Steve Vanlanduit
Keyword(s):  
Cognitive Load ◽  
Real World ◽  
Robotic Manipulator ◽  
Similarity Score ◽  
Human Robot Interaction ◽  
Experimental Results ◽  
The Other ◽  
Robot Interaction ◽  
Run Length ◽  
The Real

In gaze-based Human-Robot Interaction (HRI), it is important to determine human visual intention for interacting with robots. One typical HRI interaction scenario is that a human selects an object by gaze and a robotic manipulator will pick up the object. In this work, we propose an approach, GazeEMD, that can be used to detect whether a human is looking at an object for HRI application. We use Earth Mover’s Distance (EMD) to measure the similarity between the hypothetical gazes at objects and the actual gazes. Then, the similarity score is used to determine if the human visual intention is on the object. We compare our approach with a fixation-based method and HitScan with a run length in the scenario of selecting daily objects by gaze. Our experimental results indicate that the GazeEMD approach has higher accuracy and is more robust to noises than the other approaches. Hence, the users can lessen cognitive load by using our approach in the real-world HRI scenario.

Two new species ofSyllis(Polychaeta: Syllidae) from South Africa, one of them viviparous, with remarks on larval development and vivipary

2014 ◽  
Vol 94 (4) ◽  
pp. 729-746 ◽  
Author(s):  
Carol Simon ◽  
Guillermo San Martín ◽  
Georgina Robinson
Keyword(s):  
South Africa ◽  
New Species ◽  
South African ◽  
The Other ◽  
Coralline Algae ◽  
Colour Pattern ◽  
The Family ◽  
Two New Species ◽  
Haliotis Midae ◽  
Characteristic Colour

Two new species of South African Syllidae of the genusSyllisLamarck, 1818 are described.Syllis unzimasp. nov. is characterized by having unidentate compound chaetae with long spines on margin, a characteristic colour pattern and its reproduction by vivipary. Vivipary is not common among the polychaetes, but most representatives occur in the family Syllidae Grube, 1850 (in five otherSyllisspecies, two species ofDentatisyllisPerkins, 1981 and two species ofParexogoneMesnil & Caullery, 1818).Syllis unzimasp. nov. differs from the other viviparous species in having large broods (>44 juveniles) which develop synchronously. Development of the juveniles is similar to that of free-spawningSyllisspecies, but the appearance of the first pair of eyespots and the differentiation of the pharynx and proventricle occur later inS. unzima.Syllis amicarmillarissp. nov., is characterized by having an elongated body with relatively short, fusiform dorsal cirri and the presence of one or two pseudosimple chaeta on midbody parapodia by loss of blade and enlargement of shaft.Syllis unzimasp. nov. was found in high densities on culturedHolothuria scabraJaeger, 1833 with single specimens found on a culturedCrassostrea gigasThunberg, 1793 and on coralline algae, respectively, whileS. amicarmillariswas found mainly in sediment outside an abalone farm and less frequently on culturedHaliotis midaeLinnaeus, 1758. We discuss the possible benefits of the association withH. scabratoS. unzimasp. nov.

Responsibility and obligation in the ‘Responsibility to Protect’

2010 ◽  
Vol 36 (S1) ◽  
pp. 25-46 ◽  
Author(s):  
WILLIAM BAIN
Keyword(s):  
International Law ◽  
Real World ◽  
The Other ◽  
Responsibility To Protect ◽  
Men And Women ◽  
The Real

AbstractThis article takes up Louise Arbour's claim that the doctrine of the ‘Responsibility to Protect’ is grounded in existing obligations of international law, specifically those pertaining to the prevention and punishment of genocide. In doing so, it argues that the aspirations of the R2P project cannot be sustained by the idea of ‘responsibility’ alone. The article proceeds in arguing that the coherence of R2P depends on an unacknowledged and unarticulated theory of obligation that connects notions of culpability, blame, and accountability with the kind of preventive, punitive, and restorative action that Arbour and others advocate. Two theories of obligation are then offered, one natural the other conventional, which make this connection explicit. But the ensuing clarity comes at a cost: the naturalist account escapes the ‘real’ world to redeem the intrinsic dignity of all men and women, while the conventionalist account remains firmly tethered to the ‘real’ world in redeeming whatever dignity can be had by way of an agreement. The article concludes by arguing that the advocate of the responsibility to protect can have one or the other, but not both.

scholarly journals Ethics of identity in the time of big data

First Monday ◽  
2019 ◽  
Author(s):  
James Brusseau
Keyword(s):  
Big Data ◽  
Personal Identity ◽  
Real World ◽  
Natural Law ◽  
The Other ◽  
Ethical Question ◽  
Human Relationships ◽  
The Real ◽  
Ethical Frameworks ◽  
Big Data Technology

Compartmentalizing our distinct personal identities is increasingly difficult in big data reality. Pictures of the person we were on past vacations resurface in employers’ Google searches; LinkedIn which exhibits our income level is increasingly used as a dating web site. Whether on vacation, at work, or seeking romance, our digital selves stream together. One result is that a perennial ethical question about personal identity has spilled out of philosophy departments and into the real world. Ought we possess one, unified identity that coherently integrates the various aspects of our lives, or, incarnate deeply distinct selves suited to different occasions and contexts? At bottom, are we one, or many? The question is not only palpable today, but also urgent because if a decision is not made by us, the forces of big data and surveillance capitalism will make it for us by compelling unity. Speaking in favor of the big data tendency, Facebook’s Mark Zuckerberg promotes the ethics of an integrated identity, a single version of selfhood maintained across diverse contexts and human relationships. This essay goes in the other direction by sketching two ethical frameworks arranged to defend our compartmentalized identities, which amounts to promoting the dis-integration of our selves. One framework connects with natural law, the other with language, and both aim to create a sense of selfhood that breaks away from its own past, and from the unifying powers of big data technology.

scholarly journals The impact of the credit legislation on consumers

2016 ◽  
Vol 6 (4) ◽  
pp. 503-509 ◽  
Author(s):  
Hlako Choma ◽  
Thifulufhelwi Cedric Tshidada ◽  
Tshegofatso Kgarabjang
Keyword(s):  
South Africa ◽  
South African ◽  
Consumer Protection ◽  
The Other ◽  
The South ◽  
Other Hand ◽  
Credit Agreement ◽  
Financial Obligation ◽  
The Impact ◽  
National Credit Act

The purpose of this paper is to examine two South Africa legislations dealing with over indebtedness of a consumer. It is clear that in terms of the South African law, section 129 (1) and 130 (3) of the National Credit Act provide that a creditor provider who wishes to enforce a debt under a credit agreement must first issue a section 129 (1) (a) notice to the consumer (the purpose of the notice is to notify the consumer of his/her arrears). On the other hand, the South African National Credit Act encourages the consumers to fulfil the financial obligations for which they are responsible. The second legislation to be examined which serve or appear to serve same purpose as the National Credit Act is the Insolvency Act. It therefore, postulated that the compulsory sequestration of a consumer in terms of the Insolvency Act would stand as an alternative remedy for a credit provider before she/he can have recourse mechanisms, such as debt review that are focused on satisfaction of the consumer’s financial obligation , in terms of the provisions of the National Credit Act. The paper determines to what extend these measures comply with the constitutional consumer protection demands. The legislature had been pertinently cognizant of the Insolvency Act when it lately enacted the National Credit Act. This is much apparent from the express amendment of section 84 of the Insolvency Act to the extent set out in schedule 2 of the National Credit Act

South African Economy: No Easy Life Ahead

2015 ◽  
pp. 104-116
Author(s):  
P. Mozias
Keyword(s):  
Economic Growth ◽  
South Africa ◽  
Interest Rates ◽  
South African ◽  
Trade Unions ◽  
Current Account Deficit ◽  
National Development ◽  
Capital Inflows ◽  
The Other ◽  
The One

South African rand depreciated in 2013–2014 under the influence of a number of factors. Internationally, its weakness was associated with the capital outflow from all emerging markets as a result of QE’s tapering in the US. Domestically, rand plummeted because of the deterioration of the macroeconomic stance of South Africa itself: economic growth stalled and current account deficit widened again. Consumer spending was restrained with the high household indebtedness, investment climate worsened with the wave of bloody strikes, and net export was still prone to J-curve effect despite the degree of the devaluation happened. But, in its turn, those problems are a mere reflection of the deep institutional misbalances inherent to the very model of the national economy. Saving rate is too low in South Africa. This leads not only to an insufficient investment, but also to trade deficits and overdependence on speculative capital inflows. Extremely high unemployment means that the country’s economic potential is substantially underutilized. Joblessness is generated, first and foremost, by the dualistic structure of the national entrepreneurship. Basic wages are being formed by way of a bargaining between big public and semi state companies, on the one hand, and trade unions associated with the ruling party, on the other. Such a system is biased towards protection of vested interests of those who earn money in capital-intensive industries. At the same time, these rates of wages are prohibitively high for a small business; so far private companies tend to avoid job creation. A new impulse to economic development is likely to emerge only through the government’s efforts to mitigate disproportions and to pursue an active industrial policy. National Development Plan adopted in 2012 is a practical step in that direction. But the growth of public investment is constrained by a necessity of fiscal austerity; as a result, the budget deficit remained too large in recent years. South African Reserve Bank will have to choose between a stimulation of economic growth with low interest rates, on the one hand, and a support of rand by tightening of monetary policy, on the other. This dilemma will greatly influence prices of securities and yields at South African financial markets.

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