3,570 research outputs found

    An exploratory study of constructive differentiation by managers of multi-ethnic workforces in Indonesia and Malaysia

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    Indonesia and Malaysia are two of Australia\u27s closest geographical neighbours and represent major trading partners; Malaysia, as one of the economic success stories of Southeast Asia and Indonesia, as the third most populous nation in the world are politically and economically of great significance to business in Australia. Both have experienced racial rioting, the former as recently as 1998, and the later in 1969. Much of the tension that has led to these riots centres around the relationship between the ethnic Chinese communities in these countries and the other ethnic groups, particularly the Pribumi in Indonesia and the Bumiputera in Malaysia. Ethnic Chinese control much of the wealth in these two countries, even though they constitute 3 percent of the population in Indonesia and 27 percent in Malaysia. Understanding the dynamic of the relationship between these groups in a business contact is of immense value to Australia business, particularly in consideration of the wealth of the ethnic Chinese and the proximity of these nations. This research attempts to contribute to that understanding by comparing the management of ethnic groups in each country. This will facilitate the determination of the destination of Australian foreign investment in this region, as well as provide insight for cross-cultural managers. The research is made more significant by the present lack of literature in this area, particularly of a comparative nature. The research suggested, from in depth interviews with ten Indonesian and Malaysian managers that in general, Malaysian managers show a greater degree of positive differentiation in the management of ethnic groups than Indonesia managers, as well as commenting on some of the ramifications of this. This must be qualified by pointing out that there appears to be significant common ground in their respective approaches, but the research suggests that on the whole, Malaysian managers differentiate more positively. The research was limited by a number of factors including time, lack of existing literature and sample size. A number of assumptions were also made, including that the managers interviewed are representative of their respective nations, they were honest in their responses and that mangers tend to follow the wider societal trends in their respective nations. Further research needs to be done not only to support this research, but also to determine the extent of the apparent difference in approach between Malaysia and Indonesia

    Self-regulation in multiple sclerosis: the role of illness cognitions and coping in adjustment

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    Multiple Sclerosis (MS) is a chronic neurological condition, which affects around 2.5 million people worldwide. At a time when there is yet no recognised cure, it is imperative that MS patients learn to cope and adjust well to living with the illness. However, research has found high rates of psychological distress associated with MS (Minden & Schiffer, 1991). This highlights the need for research to investigate the psychological factors, which make MS patients vulnerable to psychological distress. One popular social cognition model called the Self-Regulation Model (Leventhal et al., 1980) has been found to successfully predict adjustment in a range of chronic illnesses. However, previous research applying the SRM to understand adjustment to MS has been limited. The current research therefore represented the first attempt to successfully apply the full SRM to an MS population prospectively. The present thesis is comprised of three studies and employed a mixed quantitative and qualitative research design method. Studies 1 (N=103) and 3 (N=150) were both quantitative studies, which applied an extended SRM model to clinical samples of MS patients and assessed indices of psychological distress over time. Study 2 (N=15) however was a qualitative study, designed to investigate MS patients experiences of living with the condition. By combining both quantitative and qualitative methods, the findings provided a fuller understanding of the psychological factors underlying successful adjustment to MS. Overall the findings provided some support for the utility of the extended SRM in predicting adjustment to MS and highlighted the importance of positive mind states and acceptance for successful adjustment to the condition. The findings also had a number of clinical implications, which are also discussed

    Species sensitivity of zeolite minerals for uptake of mercury solutes

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    The uptake of inorganic Hg2+ and organometallic CH3Hg+ from aqueous solutions by 11 different natural zeolites has been investigated using a batch distribution coefficient (Kd) method and supported by a preliminary voltammetric study. The effect of mercury concentration on theKd response is shown over an environmentally appropriate concentration range of 0.1-5 ppm inorganic and organometallic Hg using a batch factor of 100 ml g−1 and 20 h equilibration. Analcime and a Na-chabazite displayed the greatest methylmercury uptakes (Kd values at 1.5 ppm of 4023 and 3456, respectively), with mordenite as the smallest at 578. All uptake responses were greater for methylmercury than for the inorganic mercuric nitrate solutions, suggesting a distinctive sensitivity of zeolites to reaction with different types of solute species. It is likely that this sensitivity is attributable to the precise nature of the resultant Hg-zeolite bonds. Additionally, both the Si-Al ratio and the Na content of the initial natural zeolite samples are shown to influence the Kd responses, with positive correlations between Kd and Na content for all zeolites excluding mordenite

    Investigating the transfer of toughness from rubber modified bulk epoxy polymers to syntactic foams

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    Syntactic foams are lightweight, high specific strength materials used in the aerospace and naval 10 industries. Their utility is limited by their brittleness. The epoxy polymer matrix in an epoxy/hollow 11 glass microsphere (GMS) syntactic foam was modified using carboxyl-terminated butadiene-acrylonitrile 12 (CTBN) rubber with the aim to increase fracture toughness. The microstructure and fracture properties 13 were investigated, and compared to CTBN modified bulk epoxy polymers. The formation of complex CTBN microstructures was responsible for the increase in fracture energy, from 193 J/m2 14 for the unmodified syntactic foam, to 296 J/m2 15 at 12 wt% CTBN modification. However, this increase is much smaller than for the CTBN modification of bulk epoxy polymers, where an increase from 101 J/m2 16 to 1112 J/m2 17 was measured for the same CTBN concentration. There is little toughness transfer from the 18 bulk epoxy polymers to the syntactic foams, attributable to small interstitial regions between the GMS, 19 restricting plastic zone size. A statistical approach to the analytical modelling of fracture energy in the 20 bulk epoxy polymers highlights the importance of considering the underlying distribution of rubber 21 particle and void sizes. The increase in fracture energy achieved in this work can increase the overall 22 usefulness of syntactic foams in structural applications

    The interaction of economic and political inequality in Latin America

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    We investigate how economic inequality can persist in Latin America in the context of radical falls in political inequality in the last decades. Using data from Colombia, we focus on a critical facet of democratization - the entry of new politicians. We show that initial levels of inequality play a significant role in determining the impact of political entry on local institutions, policy, and development outcomes, which can impact future inequality. A vicious circle emerges whereby policies that reduce inequality are less likely to be adopted and implemented in places with relatively high inequality. We present evidence that this is caused both by the capture of new politicians and barriers to institution and state capacity building, and also by the fact that politicians committed to redistribution are less likely to win in relatively unequal places. Our results, therefore, help to reconcile the persistence of economic inequality with the new political context

    The bispectrum of matter perturbations from cosmic strings

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    We present the first calculation of the bispectrum of the matter perturbations induced by cosmic strings. The calculation is performed in two different ways: the first uses the unequal time correlators (UETCs) of the string network - computed using a Gaussian model previously employed for cosmic string power spectra. The second approach uses the wake model, where string density perturbations are concentrated in sheet-like structures whose surface density grows with time. The qualitative and quantitative agreement of the two gives confidence to the results. An essential ingredient in the UETC approach is the inclusion of compensation factors in the integration with the Green's function of the matter and radiation fluids, and we show that these compensation factors must be included in the wake model also. We also present a comparison of the UETCs computed in the Gaussian model, and those computed in the unconnected segment model (USM) used by the standard cosmic string perturbation package CMBACT. We compare numerical estimates for the bispectrum of cosmic strings to those produced by perturbations from an inflationary era, and discover that, despite the intrinsically non-Gaussian nature of string-induced perturbations, the matter bispectrum is unlikely to produce competitive constraints on a population of cosmic strings

    CMB lensing and primordial squeezed non-Gaussianity

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    Squeezed primordial non-Gaussianity can strongly constrain early-universe physics, but it can only be observed on the CMB after it has been gravitationally lensed. We give a new simple non-perturbative prescription for accurately calculating the effect of lensing on any squeezed primordial bispectrum shape, and test it with simulations. We give the generalization to polarization bispectra, and discuss the effect of lensing on the trispectrum. We explain why neglecting the lensing smoothing effect does not significantly bias estimators of local primordial non-Gaussianity, even though the change in shape can be >~10%. We also show how tau_NL trispectrum estimators can be well approximated by much simpler CMB temperature modulation estimators, and hence that there is potentially a ~10-30% bias due to very large-scale lensing modes, depending on the range of modulation scales included. Including dipole sky modulations can halve the tau_NL error bar if kinematic effects can be subtracted using known properties of the CMB temperature dipole. Lensing effects on the g_NL trispectrum are small compared to the error bar. In appendices we give the general result for lensing of any primordial bispectrum, and show how any full-sky squeezed bispectrum can be decomposed into orthogonal modes of distinct angular dependence.Comment: 22 pages, 6 figures; minor edits to match published versio
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