Gender, Comparative Advantage and Labor Market Activity in Immigrant Families

The family investment hypothesis that credit-constrained immigrant families adopt a household strategy for financing post-migration human capital investment in which the partner with albour market comparative advantage engages ininvestment activities and the other partner undertakes labor market activities which finance current consumption. We assess this hypothesis by focussing on two issues: first, the extent to which the specialization in the investing versus financing role is based on comparative advantage versus gender, and the second, the extent to which credit constraints offer a potential explanation for observed behaviour. Using a unique new Australian data set we find that comparative advantage and gender can be separately identified in migrating families. We find some support for the family investment hypothesis among traditional families (where labor market comparative advantage resides with the male partner) but not among nontraditional families.

Parallel Private Health Insurance in Australia: A Cautionary Tale and Lessons for Canada

Canada's restrictions on the role of private health insurance for publicly insured physician and hospital services are unique among countries with universal, publicly funded health care systems. Pressure is mounting in Canada, however, to loosen these restrictions and create a parallel system of private finance. Advocates argue that creation of a parallel system of private finance will ensure the sustainability of the public system (by reducing public cost pressures), improve access to the public system (e.g., by reducing wait times), and improve quality in the public system (through competition). Opponents of parallel private finance argue that it will create "two-tiered" medicine, increase costs, compromise equity and reduce quality and access to publicly financed health care as those with the financial means (and often the strongest voice) exit to private insurance. Australia provides a particularly promising case study for Canada regarding the dynamics of parallel systems of public and private finance. This paper examines Australia's experience with parallel finance for inpatient hospital services to provide insight regarding: (a) the effectiveness of a parallel system of private finance in reducing costs and wait times in the public system; (b) risk selection between the parallel public and private insurance sectors; (c) the financial redistribution associated with the introduction and maintenance of a parallel system of finance; and (d) the dynamics of the broader political economy associated with parallel systems of finance. Australia's experience provides a number of lessons for Canada, including: (1) the potential for cost savings through introduction or expansion of a parallel private sector is very limited; (2) the introduction or expansion of a parallel private finance is unlikely to reduce wait times in the publicly financed system; (3) there is no simple way to regulate private insurers to pursue public objectives; (4) it is impossible to create an independent, isolated parallel system of private finance — interactions between the public and private insurance sectors are complex and unavoidable; (5) quality plays a key role in driving the dynamics between the public and privately financed sectors; and (6) it is essential to articulate clear policy objectives for health care financing and to design public and private roles consistent with these objectives. Our overall conclusion is that the Australian experience provides a cautionary tale regarding the risks, costs and benefits of a parallel private system of health care finance.

Resource Dependence Theory: Past and future

This chapter reviews the origins and primary arguments of resource dependence theory and traces its influence on the subsequent literatures in multiple social science and professional disciplines, contrasting it with Emerson\u27s power-dependence theory. Recent years have seen an upsurge in the theory\u27s citations in the literature, which we attribute in part to Stanford\u27s position of power in the network of academic exchange. We conclude with a review of some promising lines of recent research that extend and qualify resource dependence theory\u27s insights, and outline potentially fruitful areas of future research

Corporations and Economic Inequality Around the World: The Paradox of Hierarchy

Using time-series data from the US since 1950 and from 53 countries around the world in 2006, this chapter documents a strong negative relation between an economy’s employment concentration (that is, the proportion of the labor force employed by the largest 10, 25, or 50 firms) and its level of income inequality. Within the US, we find that trends in the relative size of the largest employers (up in the 1960s and 1970s, down in the 1980s and 1990s, up in the 2000s) are directly linked to changes in inequality, and that corporate size is a proximal cause of the extravagant increase in social inequality over the past generation. We conclude that organization theory can provide a distinctive contribution to understanding societal outcomes

Mandalay /

https://digitalcommons.library.umaine.edu/mmb-vp/4529/thumbnail.jp

An Off-Axis Relativistic Jet Model for the Type Ic supernova SN 2007gr

We propose an off-axis relativistic jet model for the Type Ic supernova SN 2007gr. Most of the energy ($\sim2\times10^{51}$ erg) in the explosion is contained in non-relativistic ejecta which produces the supernova. The optical emission is coming from the decay process of $\rm ^{56}Ni$ synthesized in the bulk SN ejecta. Only very little energy ($\sim10^{48}$ erg) is contained in the relativistic jet with initial velocity about 0.94 times the speed of light. The radio and X-ray emission comes from this relativistic jet. With some typical parameters of a Wolf-Rayet star (progenitor of Type Ic SN), i.e., the mass loss rate $\dot{M}=1.0 \times10^{-5} M_{\odot} \rm yr^{-1}$ and the wind velocity $v_{\rm w}=1.5\times10^{3} \rm km s^{-1}$ together with an observing angle of $\theta_{\rm obs} = 63.3^{\circ}$, we can obtain the multiband light curves that fit the observations well. All the observed data are consistent with our model. Thus we conclude that SN 2007gr contains a weak relativistic jet and we are observing the jet from off-axis.Comment: 22 pages, 4 figures, accepted for publication in Ap

IR Monitoring of the Microquasar GRS 1915+105: Detection of Orbital and Superhump Signatures

We present the results of seven years of K-band monitoring of the low-mass X-ray binary GRS 1915+105. Positive correlations between the infrared flux and the X-ray flux and X-ray hardness are demonstrated. Analysis of the frequency spectrum shows that the orbital period of the system is $P_{orb}= 30.8 \pm 0.2$ days. The phase and amplitude of the orbital modulation suggests that the modulation is due to the heating of the face of the secondary star. We also report another periodic signature between 31.2 and 31.6 days, most likely due to a superhump resonance. From the superhump period we then obtain a range on the mass ratio of the system, $0.05 < q < 0.12$.Comment: 16 pages, 6 figures; v2: minor change

Experimentally Constrained Molecular Relaxation: The Case of Glassy GeSe2

An ideal atomistic model of a disordered material should contradict no experiments,and should also be consistent with accurate force fields (either {\it ab initio}or empirical). We make significant progress toward jointly satisfying {\it both} of these criteria using a hybrid reverse Monte Carlo approach in conjunction with approximate first principles molecular dynamics. We illustrate the method by studying the complex binary glassy material g-GeSe$_2$. By constraining the model to agree with partial structure factors and {\it ab initio} simulation, we obtain a 647-atom model in close agreement with experiment, including the first sharp diffraction peak in the static structure factor. We compute the electronic state densities and compare to photoelectron spectroscopies. The approach is general and flexible.Comment: 6 pages, 4 figure

An Experimental Investigation into the Effect of Flap Angles for a Piezo-Driven Wing

This article presents a comparison of results from six degree of freedom force and moment measurements and Particle Image Velocimetry (PIV) data taken on the Air Force Institute of Technology\u27s (AFIT) piezoelectrically actuated, biomimetically designed Hawkmoth, Manduca Sexta, class engineered wing, at varying amplitudes and flapping frequencies, for both trimmed and asymmetric flapping conditions to assess control moment changes. To preserve test specimen integrity, the wing was driven at a voltage amplitude 50% below the maximum necessary to achieve the maximal Hawkmoth total stroke angle. 86 and 65 stroke angles were achieved for the trimmed and asymmetric tests respectively. Flapping tests were performed at system structural resonance, and at 10% off system resonance at a single amplitude, and PZT power consumption was calculated for each test condition. Two-dimensional PIV visualization measurements were taken transverse to the wing planform, recorded at the mid-span, for a single frequency and amplitude setting, for both trimmed and asymmetric flapping to correlate with the 6-DoF balance data. Linear velocity data was extracted from the 2-D PIV imagery at 1/2 and 1 chord locations above and below the wing, and the mean velocities were calculated for four separate wing phases during the flap cycle. The mean forces developed during a flap cycle were approximated using a modification of the Rankine-Froude axial actuator disk model to calculate the transport of momentum flux as a measure of vertical thrust produced during a static hover flight condition. Values of vertical force calculated from the 2-D PIV measurements were within 20% of the 6-DOF force balance experiments. Power calculations confirmed flapping at system resonance required less power than at off resonance frequencies, which is a critical finding necessary for future vehicle design considerations

The geology of zinc in coals of the Illinois Basin

Final report to the U.S. Geological Survey, Branch of Eastern Mineral Resources, U.S. Department of Interior. June 1975 to September 1977.U.S. Department of Interior Grant 14-08-0001-G-249Ope