A perceived gap between invasive species research and stakeholder priorities

Information from research has an important role to play in shaping policy and management responses to biological invasions but concern has been raised that research focuses more on furthering knowledge than on delivering practical solutions. We collated 449 priority areas for science and management from 160 stakeholders including practitioners, researchers and policy makers or advisors working with invasive species, and then compared them to the topics of 789 papers published in eight journals over the same time period (2009–2010). Whilst research papers addressed most of the priority areas identified by stakeholders, there was a difference in geographic and biological scales between the two, with individual studies addressing multiple priority areas but focusing on specific species and locations. We hypothesise that this difference in focal scales, combined with a lack of literature relating directly to management, contributes to the perception that invasive species research is not sufficiently geared towards delivering practical solutions. By emphasising the practical applications of applied research, and ensuring that pure research is translated or synthesised so that the implications are better understood, both the management of invasive species and the theoretical science of invasion biology can be enhanced

Reinsurance in State Health Reform

Based on the experiences of three states, formal modeling, quantitative estimates, and qualitative assessments, explores the impact of and issues involved in publicly funding reinsurance for insurers as a way to expand or maintain private coverage

The Urban Institute's Microsimulation Model for Reinsurance: Model Construction and State-Specific Application

Describes the Urban Institute's model for simulating the effects of using state-funded reinsurance to subsidize primary insurance premiums. Details the process of building state-specific baseline databases and modeling reinsurance policy options

Don't cancel the surgery just yet! A case report of positive preoperative pregnancy test due to a soft tissue sarcoma production of ectopic beta human chorionic gonadotropin.

Soft tissue sarcomas are a rare group of mesenchymal malignancies which can range from low to high grade. These tumors have different clinical, radiographic, and histopathological characteristics. Beta human chorionic gonadotropin is a naturally secreted hormone by placental syncytiotrophoblast cells during pregnancy. On very rare occasions, sarcomas can develop the ability to ectopically produce human chorionic gonadotropin. Very few cases exist in the literature of soft tissue sarcomas expressing this hormone. We report the case of a 55-year-old female who presented with a posterior thigh soft tissue sarcoma who on the day of surgical resection was found to have an unusually elevated serum human chorionic gonadotropin. Positive immunohistochemical staining of the resected mass confirmed the sarcoma as the source of the beta human chorionic gonadotropin

Simulation of vibrations produced by localized faults in rolling elements of bearings in gearboxes

A combined gear/bearing model has been made to study the interaction between gears and bearings in the presence of faults. The thirty-four degree-of-freedom model of the University of New South Wales (UNSW) gearbox test rig is a lumped mass parameter model, which has the capacity to model different fault types (localized inner/outer race faults and extended faults). This is in addition to its original capacity for modelling spalls and cracks in the gears. The gear/bearing model takes into consideration the slippage in the bearings, the Hertzian contact and the nonlinearity of the bearing stiffness (time variant). Results have earlier been published for simulated local faults in the inner and outer races of the bearings as well as for an extended inner race fault. For a complete modelling of localized faults, the simulation model has now been updated to enable simulating faults in the rolling elements. The modeling of the faults in the rolling elements takes into consideration the difference in race curvature and represents a new contribution to the development of the model. The agreement between the processed simulated and measured signals shows the robustness of the developed model and its suitability for testing new diagnostic and prognostic algorithms

Smectic Phases with Cubic Symmetry: The Splay Analog of the Blue Phase

We report on a construction for smectic blue phases, which have quasi-long range smectic translational order as well as long range cubic or hexagonal order. Our proposed structures fill space with a combination of minimal surface patches and cylindrical tubes. We find that for the right range of material parameters, the favorable saddle-splay energy of these structures can stabilize them against uniform layered structures.Comment: 4 pages, 4 eps figures, RevTe

Simulated Gas Turbine Casing Response to Rotor Blade Pressure Excitation

Non-intrusive measurement of blade condition within gas turbines is of major interest within all areas of their use. It is proposed that the measurement of the casing vibration, due to the aerodynamic-structural interaction within the turbine, could provide a means of blade condition monitoring and modal parameter estimation. In order to understand the complex relationship between blade vibrations and casing response, an analytical model of the casing and simulated pressure signal associated with the rotor blades is presented. A mathematical formulation is undertaken of the internal pressure signal due to both the rotating bladed disk as well as individual blade vibrations and the solution of the casing response is formulated. Excitation by the stator blades and their contribution to the casing response is also investigated. Some verification of the presented analytical model is provided by comparison with Finite Element Analysis results for various rotor rotational speeds