Achieving Universal Coverage Through Comprehensive Health Reform: The Vermont Experience

Provides an overview of Vermont's comprehensive health reform and the interim results of a two-year evaluation of its impact on the affordability of coverage and access to services, as well as its sustainability. Discusses lessons learned

An active-architecture approach to COTS integration

Commercial off-the-shelf (COTS) software products are increasingly used as standard components within integrated information systems. This creates challenges since both their developers and source code are not usually available, and the ongoing development of COTS cannot be predicted. The ArchWare Framework approach recognises COTS products as part of the ambient environment of an information system and therefore an important part of development is incorporating COTS as effective system components. This integration of COTS components, and the composition of components, is captured by an active architecture model which changes as the system evolves. Indeed the architecture modelling language used enables it to express the monitoring and evolution of a system. This active architecture model is structured using control system principles. By modelling both integration and evolution it can guide the system’s response to both predicted and emergent changes that arise from the use of COTS products.Publisher PDFPeer reviewe

Theory and simulations of a gyrotron backward wave oscillator using a helical interaction waveguide

A gyrotron backward wave oscillator (gyro-BWO) with a helically corrugated interaction waveguide demonstrated its potential as a powerful microwave source with high efficiency and a wide frequency tuning range. This letter presents the theory describing the dispersion properties of such a waveguide and the linear beam-wave interaction. Numerical simulation results using the PIC code MAGIC were found to be in excellent agreement with the output measured from a gyro-BWO experiment

Achieving Universal Coverage Through Comprehensive Health Reform: The Vermont Experience -- Report of Findings

Presents findings on the role of Vermont's health reform programs in increasing insurance coverage between 2005 and 2009. Examines changes by insurance type, contributing factors such as outreach campaigns, financial sustainability, and implications

Cognitive impairments in the STOP null mouse model of schizophrenia.

International audienceCognitive dysfunction is a primary and persisting core deficit of schizophrenia that is marginally improved by antipsychotic treatment. Adult mice that lack the stable tubule-only polypeptide (STOP) have neurochemical and behavioral abnormalities that model some features of schizophrenia. Recognition and long-term memory in the STOP null mouse were tested with the novel object recognition task and an olfactory discrimination task, respectively. Researchers examined the brains from STOP null mice to determine whether differences in task performance were associated with alterations in brain morphology. STOP null mice displayed deficits in both recognition and long-term memory. These behavioral deficits were accompanied by a massive enlargement of the cerebral ventricular system as well as by reductions in volume of cortical and diencephalic structures. In addition to deficits in recognition and long-term memory, STOP null mice displayed exaggerated neuroanatomical deficits somewhat reminiscent of those observed among individuals with schizophrenia

Multi-mode coupling wave theory for helically corrugated waveguide

Helically corrugated waveguide has been used in various applications such as gyro-backward wave oscillators, gyro-traveling wave amplifier and microwave pulse compressor. A fast prediction of the dispersion characteristic of the operating eigenwave is very important when designing a helically corrugated waveguide. In this paper, multi-mode coupling wave equations were developed based on the perturbation method. This method was then used to analyze a five-fold helically corrugated waveguide used for X-band microwave compression. The calculated result from this analysis was found to be in excellent agreement with the results from numerical simulation using CST Microwave Studio and vector network analyzer measurements

A cusp electron gun for millimeter wave gyrodevices

The experimental results of a thermionic cusp electron gun, to drive millimeter and submillimeter wave harmonic gyrodevices, are reported in this paper. Using a "smooth" magnetic field reversal formed by two coils this gun generated an annular-shaped, axis-encircling electron beam with 1.5 A current, and an adjustable velocity ratio alpha of up to 1.56 at a beam voltage of 40 kV. The beam cross-sectional shape and transported beam current were measured by a witness plate technique and Faraday cup, respectively. These measured results were found to be in excellent agreement with the simulated results using the three-dimensional code MAGIC

Pleural effusion: a clinical and cytological study

The term "pleural effusion" can be, and often is, applied to any collection of fluid in the pleural cavity. In this thesis, however, the term is held to exclude empyema and, excepting some reference to difficulties in differential diagnosis, passive transudate (hydrothorax). Frequent reference is made to primary tuberculous pleural effusion. By this is meant tuberculous pleurisy with effusion occurring in the absence of the "adult" form of pulmonary tuberculosis, and commonly thought to be the result of a primary tuberculous infection in the lung and mediastinal glands occurring some months previously.Comment is required on the arrangement of the thesis. A division into Sections has been made to facilitate cross -references. Each Section has been written so that, with respect to the problem discussed, it is more or less complete in itself; this has led to a certain, but, it is hoped, not undue amount of repetition among the Sections. -The order of Sections has been determined with only one object in mind, namely that information derived from earlier Sections might be available for application to the problems discussed in later Sections. Since a large part of the work has consisted of clinical observation of patients, many case reports are necessary; to save space and to avoid unnecessary tedium, such reports are in a form which gives only essential information. Tables are arranged as integral parts of the text. Figures are numbered, and, with the exception of those in the Section on Cytology, are inserted on un- numbered pages at convenient places in the text

Laboratory experiments simulating electron cyclotron masers in space

[Abstract unavailable

Wideband gyro-amplifiers

Gyro-amplifiers using helically corrugated waveguides have shown exceptional gain, power, bandwidth, and efficiency performance at cm and mm wavelengths. The performance of a long pulse (and therefore high vacuum) system is strongly influenced by factors other than the intrinsic bandwidth of the interaction. We shall discuss these and other challenges, along with their mitigation in high average power wideband amplifiers