Of science and small things: recollections of the past twenty(-)odd years
- Authors: Botha, J. R
- Subjects: Nanoscience , Nanotechnology , f-sa
- Language: English
- Type: text , Lectures
- Identifier: http://hdl.handle.net/10948/20867 , vital:29409
- Description: I will start, therefore, with an overview of achievements in a “new” field of endeavour, a science of small things, popularly called nanoscience, and its spin-off called nanotechnology. I will present a brief history, look at the approaches that have been followed by scientists and engineers to develop and understand small things, and summarise some of the benefits to society in terms of new materials and processes, energy storage and generation, electronics, environmental applications, medicine and transportation. Since our own research focuses on the development on semiconductors, I will conclude the scientific part of the presentation by considering the contribution of semiconductors to the development of nanotechnology and highlight a few examples from our own research during the past two decades on the development of nano-scale semiconductor structures, like nanorods, quantum wells and superlattices.
- Full Text:
- Authors: Botha, J. R
- Subjects: Nanoscience , Nanotechnology , f-sa
- Language: English
- Type: text , Lectures
- Identifier: http://hdl.handle.net/10948/20867 , vital:29409
- Description: I will start, therefore, with an overview of achievements in a “new” field of endeavour, a science of small things, popularly called nanoscience, and its spin-off called nanotechnology. I will present a brief history, look at the approaches that have been followed by scientists and engineers to develop and understand small things, and summarise some of the benefits to society in terms of new materials and processes, energy storage and generation, electronics, environmental applications, medicine and transportation. Since our own research focuses on the development on semiconductors, I will conclude the scientific part of the presentation by considering the contribution of semiconductors to the development of nanotechnology and highlight a few examples from our own research during the past two decades on the development of nano-scale semiconductor structures, like nanorods, quantum wells and superlattices.
- Full Text:
The Entrepreneur as a disequilibrating factor in economic process
- Authors: Ncwadi, Mcebisi Ronney
- Subjects: Entrepreneurship , Equilibrium (Economics) , f-sa
- Language: English
- Type: text , Lectures
- Identifier: http://hdl.handle.net/10948/55844 , vital:54275
- Description: The evidence of entrepreneurship's significant contribution to economic growth and development, challenges the dominance of general equilibrium theory in microeconomics. The assumptions of the neoclassical economic model which underlies general equilibrium theory has long time been criticised; yet its consideration in policy formulation has not been dismissed despite the fact that general equilibrium theory does not incorporate entrepreneurship. The assumptions embedded in neoclassical economic theory exclude entrepreneurship as an economic variable. However, as microeconomic research finds more and more evidence confirming the importance of new business formation and growth, general equilibrium theory remains incapable of adapting to this reality. To this end general equilibrium theory produces policy prescriptions which favour mainly large, established firms over new, small firms. It is therefore no wonder that a large number of small businesses in South Africa are failing. This lecture presents the theory of the firm and also defines an entrepreneur within the context of the theory of the firm. In doing so, this lecture exposes the shortcomings of the general equilibrium theory which is used to explain entrepreneurship. Based on Schumpeter’s description of an entrepreneur, namely, a Disequilibrating factor of economic processes; this lecture demonstrates how entrepreneurship should be understood and developed within a broader scope of microeconomics discourse.
- Full Text:
- Authors: Ncwadi, Mcebisi Ronney
- Subjects: Entrepreneurship , Equilibrium (Economics) , f-sa
- Language: English
- Type: text , Lectures
- Identifier: http://hdl.handle.net/10948/55844 , vital:54275
- Description: The evidence of entrepreneurship's significant contribution to economic growth and development, challenges the dominance of general equilibrium theory in microeconomics. The assumptions of the neoclassical economic model which underlies general equilibrium theory has long time been criticised; yet its consideration in policy formulation has not been dismissed despite the fact that general equilibrium theory does not incorporate entrepreneurship. The assumptions embedded in neoclassical economic theory exclude entrepreneurship as an economic variable. However, as microeconomic research finds more and more evidence confirming the importance of new business formation and growth, general equilibrium theory remains incapable of adapting to this reality. To this end general equilibrium theory produces policy prescriptions which favour mainly large, established firms over new, small firms. It is therefore no wonder that a large number of small businesses in South Africa are failing. This lecture presents the theory of the firm and also defines an entrepreneur within the context of the theory of the firm. In doing so, this lecture exposes the shortcomings of the general equilibrium theory which is used to explain entrepreneurship. Based on Schumpeter’s description of an entrepreneur, namely, a Disequilibrating factor of economic processes; this lecture demonstrates how entrepreneurship should be understood and developed within a broader scope of microeconomics discourse.
- Full Text:
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