3,686 research outputs found

    Aviation liberalisation and the environment in europe

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    Trade Negotiations in the 108th Congress

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    CRS ReportCRSTradeNegotiations108Cong25Sept03.pdf: 553 downloads, before Oct. 1, 2020

    Gender differences in paid and unpaid work: findings from a New Zealand birth cohort

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    This study uses data from a birth cohort of New Zealand-born 30-year-olds to examine gender differences in time use and satisfaction with time use. The specific aims of the study are: to examine gender difference in time spent in paid employment and unpaid work; to examine the extent to which males and females are satisfied with their time use

    The Basic Surgical Skills course in sub-Saharan Africa: an observational study of effectiveness

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    Background: The Basic Surgical Skills (BSS) course is a common component of postgraduate surgical training programmes in sub-Saharan Africa, but was originally designed in a UK context, and its efficacy and relevance have not been formally assessed in Africa. Methods: An observational study was carried out during a BSS course delivered to early-stage surgical trainees from Rwanda and the Democratic Republic of the Congo. Technical skill in a basic wound closure task was assessed in a formal Objective Structured Assessment of Technical Skills (OSAT) before and after course completion. Participants completed a pre-course questionnaire documenting existing surgical experience and self-perceived confidence levels in surgical skills which were to be taught during the course. Participants repeated confidence ratings and completed course evaluation following course delivery. Results: A cohort of 17 participants had completed a pre-course median of 150 Caesarean sections as primary operator. Performance on the OSAT improved from a mean of 10.5/17 pre-course to 14.2/17 post-course (mean of paired differences 3.7, p < 0.001). Improvements were seen in 15/17 components of wound closure. Pre-course, only 47% of candidates were forming hand-tied knots correctly and 38% were appropriately crossing hands with each throw, improving to 88 and 76%, respectively, following the course (p = 0.01 for both components). Confidence levels improved significantly in all technical skills taught, and the course was assessed as highly relevant by trainees. Conclusion: The Basic Surgical Skills course is effective in improving the basic surgical technique of surgical trainees from sub-Saharan Africa and their confidence in key technical skills

    Universal Non-Gaussian Initial Conditions for N-body Simulations

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    In this paper we present the implementation of an efficient formalism for the generation of arbitrary non-Gaussian initial conditions for use in N-body simulations. The methodology involves the use of a separable modal approach for decomposing a primordial bispectrum or trispectrum. This approach allows for the far more efficient generation of the non-Gaussian initial conditions already described in the literature, as well as the generation for the first time of non-separable bispectra and the special class of diagonal-free trispectra. The modal approach also allows for the reconstruction of the spectra from given realisations, a fact which is exploited to provide an accurate consistency check of the simulations.Comment: 7 pages, 3 figure

    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

    General CMB and Primordial Bispectrum Estimation I: Mode Expansion, Map-Making and Measures of f_NL

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    We present a detailed implementation of two bispectrum estimation methods which can be applied to general non-separable primordial and CMB bispectra. The method exploits bispectrum mode decompositions on the domain of allowed wavenumber or multipole values. Concrete mode examples constructed from symmetrised tetrahedral polynomials are given, demonstrating rapid convergence for known bispectra. We use these modes to generate simulated CMB maps of high resolution (l > 2000) given an arbitrary primordial power spectrum and bispectrum or an arbitrary late-time CMB angular power spectrum and bispectrum. By extracting coefficients for the same separable basis functions from an observational map, we are able to present an efficient and general f_NL estimator for a given theoretical model. The estimator has two versions comparing theoretical and observed coefficients at either primordial or late times, thus encompassing a wider range of models, including secondary anisotropies, lensing and cosmic strings. We provide examples and validation of both f_NL estimation methods by direct comparison with simulations in a WMAP-realistic context. In addition, we show how the full bispectrum can be extracted from observational maps using these mode expansions, irrespective of the theoretical model under study. We also propose a universal definition of the bispectrum parameter F_NL for more consistent comparison between theoretical models. We obtain WMAP5 estimates of f_NL for the equilateral model from both our primordial and late-time estimators which are consistent with each other, as well as with results already published in the literature. These general bispectrum estimation methods should prove useful for the analysis of nonGaussianity in the Planck satellite data, as well as in other contexts.Comment: 41 pages, 17 figure
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