Showing papers by "University of Wollongong published in 1970"
TL;DR: In this article, an assessment was made of the development of logical thinking of four samples of Australian children, two of which were full-blood Australian Aboriginal children, one living in an isolated, rural, mainly Aboriginal community, and the other sample living in much closer contact with Europeans and their technology.
Abstract: An assessment was made of the development of logical thinking of four samples of Australian children. Two of these were samples of full-blood Australian Aboriginal children, one sample living in an isolated, rural, mainly Aboriginal community, and the other sample living in much closer contact with Europeans and their technology. The two samples of European children were identified as high-and low-socioeconomic. The measure of logical thinking was a battery of classificatory tests based on tests developed by Inhelder and Piaget. Marked differences in performance were found between the two European and the two Aboriginal groups, especially on a test of multiple classification. A small sub-sample of very high-contact Aboriginals performed at least as well as white Australian children living in a similar environment. Environmental differences between the four populations sampled were considered to have been a major influence in the performance differences found.
52 citations
01 Jul 1970
TL;DR: The formation of both iron and manganese sulfide inclusions in 3 kg iron ingots containing less than 200 ppm impurities together with oxygen ranging from 10 to 100 ppm has been studied as discussed by the authors.
Abstract: The formation of both iron and manganese sulfide inclusions in 3 kg iron ingots containing less than 200 ppm impurities together with oxygen ranging from 10 to 100 ppm has been studied. Both types of inclusions under go essentially the same shape changes with varying oxygen contents. Faceted (type 3) inclusions could be obtained without additions of deoxidizers such as aluminum in excess amounts. A new explanation for the formation of type 3 inclusions has been proposed.
28 citations
24 citations
21 citations
TL;DR: In this article, jointing in some "ironstone" intraclasts in a sandstone from the Sydney Basin, New South Wales shows that the joints were developed prior to contemporaneous erosion.
Abstract: Jointing in some ‘ironstone’ intraclasts in a sandstone from the Sydney Basin, New South Wales shows that the joints were developed prior to contemporaneous erosion. A number of other features observed in the Sydney Basin sequence support this conclusion and suggest that an anisotropic horizontal stress field developed in the sediments very soon after their deposition.
17 citations
TL;DR: An analysis of the required profile shape of gravity flow discharge chutes to achieve maximum exit velocity is presented in this article, where the dynamic equations for a grain element in the flowing stream were developed and utilizing energy considerations, an expression for exit velocity was obtained.
11 citations
TL;DR: It is shown that the differential delay equation N (t)=γN (t−1)−βN(t) behaves like the Malthusian equation with large t and an expression for the age density function is developed that is shown to asymptotically approach a negative exponential independent of time.
Abstract: If an organism may exist for a constant period as an egg before it becomes an adult and if the birth rate per individual and the death rate of an egg and adult are constants, then the number of adults can be represented by the differential delay equation N (t)=γN(t−1)−βN(t) . It is shown that this equation behaves like the Malthusian equation with large t where γ corresponds to the Malthusian birth rate and β corresponds to the Malthusian death rate. With the other parameters held constant the population will inevitably die out if the egg stage is increased beyond a critical value. An expression for the age density function is developed that is shown to asymptotically approach a negative exponential independent of time.
11 citations
TL;DR: Weir and Alperin this article showed that the Sylow p-subgroups of the general linear group over finite fields of characteristic different from p have a unique largest normal abelian subgroup and that no other subgroup has order as great.
Abstract: A. J. Weir [1] has found the maximal normal abelian subgroups of the Sylow p-subgroups of the general linear group over a finite field of characteristic p, and a theorem of J. L. Alperin [2] shows that the Sylow p-subgroups of the general linear group over finite fields of characteristic different from p have a unique largest normal abelian subgroup and that no other abelian subgroup has order as great.
11 citations
TL;DR: In this paper, the output voltage of a static invertor is frequently a piecewise-constant periodic waveform, and using the properties of the transition matrix, a method is presented for determining the steady-state current waveform.
Abstract: The output voltage of a static invertor is frequently a piecewise-constant periodic waveform. For such cases, and using the properties of the transition matrix, a method is presented for determining the steady-state current waveform.
7 citations
TL;DR: There was a significant learning effect for the groups and the performance of subjects learning the code through the skin of the wrist was superior and there was no clear distal-proximal ordering effect.
6 citations
TL;DR: In this article, the time dependent reaction rate of a 1 v detector in various sized BeO assemblies has been calculated at various times after an initial neutron pulse using multigroup diffusion theory, showing excellent agreement with recent experiments and indicate the apparent ability of diffusion theory to describe pulsed polycrystalline assemblies.
TL;DR: Work in the call centre and call centre industries can be stressful and most workers are vulnerable in terms of their poor working conditions and low wages as mentioned in this paper, and there is a lack of overt conflict between management and workers.
Abstract: Previous research on occupational stress is limited in that it has tended to focus on the individual and is frequently located within occupations that are deemed to be stressful, such as nursing and policing. The intention o f this paper is to broaden the scope of analysis by investigating a range of employment factors (i.e. heavy workloads, interpersonal relationships and organisational factors) which can contribute to stress amongst workers and to include more industry sectors. In particular, this paper endeavours to draw attention to occupational stress amongst workers in emotionally demanding, so-called "low risk industries” - namely the call centre and hospitality industries, and to explore their perceptions of stress, their attitudes concerning managing stress and their responses to the inclusion of stress detailed in the Health and Safety in Employment Amendment Act, 2002. Findings, from two studies indicate that working in the hospitality and call centre industries can be stressful and that most workers are vulnerable in terms of their poor working conditions and low wages. Findings also show that, consistent with other studies, there was low trade union presence and a high rate of casualisation and staff turnover in each of the industries. At the same time there was a lack of overt conflict between management and workers, with an apparent close alignment of goals between the two parties and a style of management that could be described as unitarist.
TL;DR: In this paper, a model is developed to show how changes in the elasticity of the supply function at the farm level offset increased levels of buyer concentration such that given percentage increases in demand by large buyers result in the same, or smaller, percentage price changes than do increases on the part of small buyers.
Abstract: A model is developed to show how changes in the elasticity of the supply function at the farm level offset increased levels of buyer (processor) concentration such that given percentage increases in demand by large buyers result in the same, or smaller, percentage price changes than do increases in demand on the part of small buyers. Since the incentive for collusive buying is a function of the potential price increases which follow demand increases, there may be little incentive for buyers to collude even if they are highly concentrated.
01 Jan 1970
TL;DR: In this article, it is shown that the pressure of air at points in the barrier is governed by Laplace's equation and from other fluid flow relationships, certain non-linear boundary conditions apply.
Abstract: A physical problem that has received considerable attention is that of leakage in mine ventilation. Most underground methods of mining leave porous material between roadways^ with the result that through leakage> the quantity of air reaching the working face is usually less than that entering the mine. Investigations into this problem have assumed that air flows through the barrier in a direction perpendicular to the roadways. This is clearly wrong unless flow is impervious in any other direction. In the present stud^ the more general consideration of air movement in any direction is made. It is shown that the pressure of air at points in the barrier is governed by Laplace’s equation and from other fluid flow relationships, certain non-linear boundary conditions apply. An operational method is used to find a solution but an approximation must be introduced for this to be achieved. The author wishes to establish the accuracy of this solution. For the special case of streamlined flow in the airways, an analytical solution is able to be determined. However, to do so depends on the validity of a modified Dini expansion of a function. This is established so that the operational and analytical solutions can be compared. Flow in the airways, however, is usually somewhat turbulent* A numerical method is developed for comparison purposes in this more general case, errors introduced by numerical approximation being reduced to a suitable level by checking with previous results from the analytical solution* Taking the numerical results as being ’exact1, it appears that the operational solution is only a fair result. CONTENTS Page INTRODUCTION 1-4 The nature of mathematics 1 Ventilation of coal mines 3 Scope of the thesis 3 CHAPTER 1 THE THEORY OF MINE VENTILATION 5-10 A model of a mine 6 Solution of the model 7 Improvements to the model 9 CHAPTER 2 FURTHER DEVELOPMENTS IN THE THEORY OF MINE VENTILATION 11-16 Further modification of the model 12 Operational solution of the new equation of flow 13 Examination of the operational solution 16 CHAPTER 3 A SPECIAL FOURIER-BESSEL EXPANSION 17-32 The role of this expansion 17 Investigation of the Fourier-Bessel series 18 Analogue of the Riemann-Lebesgue lemma 25 Validity of the Fourier-Bessei expansion 28 CHAPTER 4 A SPECIAL DINI EXPANSION 33-40 Investigation of the Dini series 33 Analogue of the Riemann-Lebesgue lemma 37 Validity of the Dini expansion 39 CHAPTER 5 A MODIFIED DINI EXPANSION 41-46 Further consideration of the Dini series Differentiation and integration of the series Validity of the modified Dini expansion 41 41 45 CHAPTER 6 COMPARISON OF THE OPERATIONAL AND ANALYTICAL P a ge SOLUTIONS FOR STREAMLINED FLOW 47-59 Equation of flow for the streamlined case 47 Operational solution for streamlined flow 48 Analytical solution for streamlined flow 49 Comparison of the two solutions 51 CHAPTER 7 COMPARISON OF THE OPERATIONAL AND NUMERICAL SOLUTIONS FOR TURBULENT FLOW 60-78 Review of the operational solution for the turbulent case 60 Numerical solution for turbulent flow 61 Comparison of the two solutions 72 CHAPTER 8 CONCLUSION 79-80 REFERENCES 81-83 ACKNOWLEDGEMENTS 84
TL;DR: Some contentious issues relation to the employment of aged workers are raised, including whether mature-aged workers are filtered into precarious working conditions because of the lack of opportunities elsewhere, whether there is a deliberated strategy to hire mature- aged workers into low quality jobs, and what the motivations are behind this.
Abstract: Although there has been a great deal written globally about the ageing population, and the potential socio-economic implications of aged workers on developed economies, only recently has attention been paid to how aged workers experience work in the new economy. Increasingly, there is evidence to suggest mature-aged workers experience considerable difficulties in finding work, with age discrimination becoming increasingly prevalent. This paper examines the work life experiences of 10 mature-aged workers in a New Zealand call center: Tadco where 31 per cent of the workforce comprises those in the 50 years plus age groups. Reporting on the individual accounts of aged workers in Tadco, this paper raises some contentious issues relation to the employment of aged workers, including whether mature-aged workers are filtered into precarious working conditions because of the lack of opportunities elsewhere, whether there is a deliberated strategy to hire mature-aged workers into low quality jobs, and what the motivations are behind this.
TL;DR: This paper describes the development and use of a punch–card recording system in general practice and evaluates the effectiveness of data processing techniques at a general practice level.
Abstract: This paper describes the development and use of a punch–card recording system in general practice. It evaluates the effectiveness of, and possible future developments in, data processing techniques at a general practice level.
TL;DR: The role of registers in state-society relationships and in the structuration of actors and interests in specific industries has been examined in this article, focusing on what they call the "neglected dimension" of registration -registration systems that operated outside the industrial relations system per se, but had considerable industrial relations consequences.
Abstract: Despite the centrality of registers to the arbitration system in New Zealand, very little work has been done on the role of registers in state-society relationships, and in the structuration of actors and interests in specific industries This paper uses registers in examining the industrial relations processes and outcomes in two major industries - meat processing and the waterfront which historically have been central to NZ as a small state in a world market Our paper focuses on what we call the 'neglected dimension' of registration – registration systems that operated outside the industrial relations (ie arbitration) system per se, but had considerable industrial relations consequences Our argument is that in the meat and waterfront industries these registers were as important, if not more important, for industrial relations than the conventional arbitration system registers, surviving both changes in technology and the law The focus will thus be on the 'unintended consequences' of the specific form of registration scheme that was institutionalised by the State in each industry Further, in each case, the unintended consequences were central to attempts by state actors to reform the industries Pressures to reform industrial relations practices in these industries were intertwined with the abolition of the industry-specific registration schemes As a result, reform of industrial relations hinged on developments other than the Employment Contracts Act 1991