Closed categories, star-autonomy, and monoidal comonads

This paper determines what structure is needed for internal homs in a monoidal category C to be liftable to the category C^G of Eilenberg-Moore coalgebras for a monoidal comonad G on C. We apply this to lift star-autonomy with the view to recasting the definition of quantum groupoid.Comment: 25 page

A finite Reynolds number approach for the prediction of boundary layer receptivity in localized regions

Previous theoretical work on the boundary layer receptivity problem has utilized large Reynolds number asymptotic theories, thus being limited to a narrow part of the frequency - Reynolds number domain. An alternative approach is presented for the prediction of localized instability generation which has a general applicability, and also accounts for finite Reynolds number effects. This approach is illustrated for the case of Tollmien-Schlichting wave generation in a Blasius boundary layer due to the interaction of a free stream acoustic wave with a region of short scale variation in the surface boundary condition. The specific types of wall inhomogeneities studied are: regions of short scale variations in wall suction, wall admittance, and wall geometry (roughness). Extensive comparison is made between the results of the finite Reynolds number approach and previous asymptotic predictions, which also suggests an alternative way of using the latter at Reynolds numbers of interest in practice

Weak Hopf monoids in braided monoidal categories

We develop the theory of weak bimonoids in braided monoidal categories and show them to be quantum categories in a certain sense. Weak Hopf monoids are shown to be quantum groupoids. Each separable Frobenius monoid R leads to a weak Hopf monoid R \otimes R.Comment: 45 page

Deregulation of Domestic Aviation - the First Year

The Commonwealth's regulation of interstate aviation, in place for over thirty years, came to an end at midnight on 30 October 1990. This study reviews the developments in the last few months of regulation and in the first year of deregulation. Based on the first year's evidence, deregulation of domestic aviation in Australia has, from the consumer's perspective, been very successful. Reliance on market forces and competition, as opposed to regulation, has so far provided clear benefits to consumers in terms of lower fares and improved servcie quality. In particular, discount air fares have been much deeper and more readily available under deregulation. Between September 1990 and June 1991quarters, real average fares of a large sample of the top 20 routes fell by 12 per cent. Service quality on a number of dimensions has also improved with deregulation. Most notably, an analysis of the services provided by domestic and commuter operators on the top 40 routes indicated that there was a 21 per cent increase in the number of flights between the June quarters of 1990 and 1991. The airlines have been able to reduce costs, but their financial performance has been adversely affected by the recession and the increased level of competition in the industry. the analysis suggests that the expected outcomes from deregulation are being realised so far.airlines; deregulation; microeconomic reform; Australia

Novel picornavirus in turkey poults with hepatitis, California, USA

To identify a candidate etiologic agent for turkey viral hepatitis, we analyzed samples from diseased turkey poults from 8 commercial flocks in California, USA, that were collected during 2008–2010. High-throughput pyrosequencing of RNA from livers of poults with turkey viral hepatitis (TVH) revealed picornavirus sequences. Subsequent cloning of the ≈9-kb genome showed an organization similar to that of picornaviruses with conservation of motifs within the P1, P2, and P3 genome regions, but also unique features, including a 1.2-kb sequence of unknown function at the junction of P1 and P2 regions. Real-time PCR confirmed viral RNA in liver, bile, intestine, serum, and cloacal swab specimens from diseased poults. Analysis of liver by in situ hybridization with viral probes and immunohistochemical testing of serum demonstrated viral nucleic acid and protein in livers of diseased poults. Molecular, anatomic, and immunologic evidence suggests that TVH is caused by a novel picornavirus, tentatively named turkey hepatitis virus

Deregulation of Domestic Aviation - the First Year

The Commonwealth's regulation of interstate aviation, in place for over thirty years, came to an end at midnight on 30 October 1990. This study reviews the developments in the last few months of regulation and in the first year of deregulation. Based on the first year's evidence, deregulation of domestic aviation in Australia has, from the consumer's perspective, been very successful. Reliance on market forces and competition, as opposed to regulation, has so far provided clear benefits to consumers in terms of lower fares and improved servcie quality. In particular, discount air fares have been much deeper and more readily available under deregulation. Between September 1990 and June 1991quarters, real average fares of a large sample of the top 20 routes fell by 12 per cent. Service quality on a number of dimensions has also improved with deregulation. Most notably, an analysis of the services provided by domestic and commuter operators on the top 40 routes indicated that there was a 21 per cent increase in the number of flights between the June quarters of 1990 and 1991. The airlines have been able to reduce costs, but their financial performance has been adversely affected by the recession and the increased level of competition in the industry. the analysis suggests that the expected outcomes from deregulation are being realised so far

Deregulation of Domestic Aviation - the First Year

The Commonwealth's regulation of interstate aviation, in place for over thirty years, came to an end at midnight on 30 October 1990. This study reviews the developments in the last few months of regulation and in the first year of deregulation. Based on the first year's evidence, deregulation of domestic aviation in Australia has, from the consumer's perspective, been very successful. Reliance on market forces and competition, as opposed to regulation, has so far provided clear benefits to consumers in terms of lower fares and improved servcie quality. In particular, discount air fares have been much deeper and more readily available under deregulation. Between September 1990 and June 1991quarters, real average fares of a large sample of the top 20 routes fell by 12 per cent. Service quality on a number of dimensions has also improved with deregulation. Most notably, an analysis of the services provided by domestic and commuter operators on the top 40 routes indicated that there was a 21 per cent increase in the number of flights between the June quarters of 1990 and 1991. The airlines have been able to reduce costs, but their financial performance has been adversely affected by the recession and the increased level of competition in the industry. the analysis suggests that the expected outcomes from deregulation are being realised so far