A new species of Peckia (Diptera: Sarcophagidae) from Costa Rica : with a note on P. pexata (Wulp)

A new species of Peckia Robineau-Desvoidy is described from the coastal dry forest of Guanacaste Province, Costa Rica, viz., Pechia glyphis sp.n., and a key to the ten species of Peckia known from the area is provided. A lectotype is designated for Pechia pexata (Wulp, 1895) and intraspecific variation in male leg setosity and in the morphology of male terminalia are documented

Hertz potentials and asymptotic properties of massless fields

In this paper we analyze Hertz potentials for free massless spin-s fields on the Minkowski spacetime, with data in weighted Sobolev spaces. We prove existence and pointwise estimates for the Hertz potentials using a weighted estimate for the wave equation. This is then applied to give weighted estimates for the solutions of the spin-s field equations, for arbitrary half-integer s. In particular, the peeling properties of the free massless spin-s fields are analyzed for initial data in weighted Sobolev spaces with arbitrary, non-integer weights.Comment: Regularity assumptions corrected. Orthogonality condition eliminate

Income From Separate Property: Towards a Theoretical Foundation

The characterization of the rents, issues and profits from separate property brought into or acquired during marriage is discussed. There has been no comprehensive treatment of this issue in community property case law and literature in recent years

Spin geometry and conservation laws in the Kerr spacetime

In this paper we will review some facts, both classical and recent, concerning the geometry and analysis of the Kerr and related black hole spacetimes. This includes the analysis of test fields on these spacetimes. Central to our analysis is the existence of a valence $(2,0)$ Killing spinor, which we use to construct symmetry operators and conserved currents as well as a new energy momentum tensor for the Maxwell test fields on a class of spacetimes containing the Kerr spacetime. We then outline how this new energy momentum tensor can be used to obtain decay estimated for Maxwell test fields. An important motivation for this work is the black hole stability problem, where fields with non-zero spin present interesting new challenges. The main tool in the analysis is the 2-spinor calculus, and for completeness we introduce its main features.Comment: 30 pages. To appear in the volume "The Centenary of General Relativity" in "Surveys in Differential Geometry", edited by Lydia Bieri and Shing-Tung Yau, in the series "Surveys in Differential Geometry

Simulating the Future Pension Wealth and Retirement Saving in Sweden

In this paper the wealth consequences of the Swedish pension system in the transition from a defined benefit to notional defined contribution system are simulated with almost exact institutional detail, using life cycle profiles estimated from detailed longitudinal micro data. Projected wealth, including different types of pension wealth, are computed and compared between cohorts, gender, wealth deciles and occupational categories. Consistent saving rates and replacement rates allowing consumption to stay constant after retirement are computed. Two different macroeconomic scenarios are considered, one using stylised values for growth, inflation etc. and another using demographically based forecasts. Some conclusions are that the cohorts born in the 1940s are relatively favoured, and so are the wealthiest deciles. Stylised macro assumptions yield more optimistic wealth projections than those corresponding to demographically based projections.Future Pension Wealth; Retirement Saving in Sweden

Maximum observable correlation for a bipartite quantum system

The maximum observable correlation between the two components of a bipartite quantum system is a property of the joint density operator, and is achieved by making particular measurements on the respective components. For pure states it corresponds to making measurements diagonal in a corresponding Schmidt basis. More generally, it is shown that the maximum correlation may be characterised in terms of a `correlation basis' for the joint density operator, which defines the corresponding (nondegenerate) optimal measurements. The maximum coincidence rate for spin measurements on two-qubit systems is determined to be (1+s)/2, where s is the spectral norm of the spin correlation matrix, and upper bounds are obtained for n-valued measurements on general bipartite systems. It is shown that the maximum coincidence rate is never greater than the computable cross norm measure of entanglement, and a much tighter upper bound is conjectured. Connections with optimal state discrimination and entanglement bounds are briefly discussed.Comment: Revtex, no figure

If it is complex, let it be complex – dealing with institutional complexity in hospitals: Comment on “Dual agency in hospitals: what strategies do managers and physicians apply to reconcile dilemmas between clinical and economic considerations?”

Published by Kerman University of Medical Sciences. This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/ by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.Waitzberg and colleagues identified strategies that managers and physicians in hospitals apply to reconcile dilemmas between clinical and economic considerations. Contributions that actually acknowledge the institutional complexity of hospitals and describe how to deal with it are rare. This comment explains the reason behind the institutional complexity in healthcare organizations and argues that institutional complexity is a good foundation for a wellfunctioning and sustainable healthcare, as long as we are able to deal with this complexity. This point underscores the importance of their contribution. However, even if the identified strategies on how to reconcile and balance different, competing demands are important, they are not easy to apply in practice. First, the strategies require frequent and high-quality interaction between different actors adhering to different institutional logics. Second, even when the strategies are applied successfully, it is difficult to make them sustainable since they rest on a fragile balance between competing logics. However, these are important avenues for future research for researchers who want to follow the route of Waitzberg and colleagues.publishedVersio

The Development and Failure of Social Norms in Second Life

This Note analyzes the development and efficacy of social norms in maximizing the welfare of participants in the virtual community of Second Life. Although some of these norms developed appropriately in response to the objectives and purposes of this virtual world, Second Life is so thoroughly steeped in conditions that have impeded the development of successful social norms in other communities that any system of social norms in Second Life will ultimately fail. Because social norms will likely,fail to successfully maximize resident welfare, regulatory schemes imposed both by the operators of the virtual world and by real-world governing institutions are needed to enhance the functioning of this particular alternative reality inhabited by millions

The Death Knell For the Death Penalty and the Significance of Global Realism to its Abolition from Glossip v. Gross to Brumfield v. Cain

Objectives For the last decade a host of different projects have been launched to allow persons who are concerned about their hearing status to quickly and at a low cost test their hearing ability. Most often, this is carried out without collecting complementary information that could be correlated with hearing impairment. In this two-part study we first, present the development and validation of a novel Internet-based hearing test, and second, report on the associations between this test and phonological representation, quality of life and self-reported hearing difficulties. Design Cross-sectional study. Setting An opportunity sample of participants was recruited at the Stockholm central station for the first study. All parts of the second study were conducted via the Internet, with testing and self-report forms adapted for online use. Participants The first part of the study was carried out in direct contact with the participants, and participants from the second study were recruited by means of advertisements in newspapers and on webpages. The only exclusion criterion was that participants had to be over 18 years old. Most participants were between 60 and 69 years old. There were almost an equal number of men and women (total n=316). Outcome measures 48 participants failed the Internet-based hearing screening test. The group failing the test reported more problems on the Amsterdam Inventory of Auditory Disability. In addition, they were found to have diminished phonological representational skills. However, no difference in quality of life was found. Conclusions Almost one in five participants was in need of contacting their local hearing clinic. This group had more complaints regarding tinnitus and hyperacusis, rated their own hearing as worse than those who passed, and had a poorer capability of generating accurate phonological representations. This study suggests that it is feasible to screen for hearing status online, and obtain valid data