34,606 research outputs found
State Variation in Primary Care Physician Supply: Implications for Health Reform Medicaid Expansions
Examines regional and state variations in primary care supply, physicians' acceptance of new patients, and capacity to meet increased demand from Medicaid's expansion. Considers policy implications, including reimbursement and scope-of-practice issues
Who Are the Uninsured Eligible for Premium Subsidies in the Health Insurance Exchanges?
Outlines characteristics of the uninsured who will be eligible for subsidies in insurance exchanges in 2014, including health, access to care, age, income, and attitudes about insurance. Explores policy implications for enrollment and adverse selection
Chronic Burdens: The Persistently High Out-of-Pocket Health Care Expenses Faced by Many Americans With Chronic Conditions
Outlines trends in the long-term financial burden insurance premiums and out-of-pocket costs pose on patients with chronic illnesses. Analyzes data by number of conditions, income, and percentage of income spent and examines the composition of expenses
A review of self-processing biases in cognition
When cues in the environment are associated with self (e.g., one’s own name, face, or coffee cup), these items trigger processing biases such as increased attentional focus, perceptual prioritization and memorial support. This paper reviews the existing literature on self-processing biases before introducing a series of studies that provide new insight into the influence of the self on cognition. In particular, the studies examine affective and memorial biases for self-relevant stimuli, and their flexible application in response to different task demands. We conclude that self-processing biases function to ensure that self-relevant information is attended to and preferentially processed because this is a perpetual goal of the self-system. However, contrary task-demands or priming can have an attenuating effect on their influence, speaking to the complexity and dynamism of the self-processing system in cognition
Computer program for supersonic Kernel-function flutter analysis of thin lifting surfaces
This report describes a computer program (program D2180) that has been prepared to implement the analysis described in (N71-10866) for calculating the aerodynamic forces on a class of harmonically oscillating planar lifting surfaces in supersonic potential flow. The planforms treated are the delta and modified-delta (arrowhead) planforms with subsonic leading and supersonic trailing edges, and (essentially) pointed tips. The resulting aerodynamic forces are applied in a Galerkin modal flutter analysis. The required input data are the flow and planform parameters including deflection-mode data, modal frequencies, and generalized masses
Analysis of preflutter and postflutter characteristics with motion-matched aerodynamic forces
The development of the equations of dynamic equilibrium for a lifting surface from Lagrange's equation is reviewed and restated for general exponential growing and decaying oscillatory motion. Aerodynamic forces for this motion are obtained from the three-dimensional supersonic kernel function that is newly generalized to complex reduced frequencies. Illustrative calculations were made for two flutter models at supersonic Mach numbers. Preflutter and postflutter motion isodecrement curves were obtained. This type of analysis can be used to predict preflutter behavior during flutter testing and to predict postflutter behavior for use in the design of flutter suppression systems
The predictive power of the Senior Loan Officer Survey: do lending officers know anything special?
The answer to this question is yes, but not that much about banks. Every quarter the Federal Reserve System surveys a panel of senior loan officers at major banks across the nation. The results of this survey have been found in previous studies to provide useful information in predicting gross domestic product. This paper extends that work, finding that sector-specific survey results are relevant for predicting real activity in those sectors but, strangely, that the informative power of the survey results only marginally extend to various measures of performance in the banking sector.
The great asteroid nomenclature controversy of 1801
With the almost complete neglect of 19th century asteroid research by professional historians of science, it is scarcely surprising that great gaps exist in our knowledge of that important field. This paper focuses on issue of naming the first asteroid. This seemingly innocuous issue assumed great importance because many believed the object discovered by Giuseppe Piazzi at Palermo Observatory to be the eighth primary planet of the solar system
Analytical comparison of effects of solid-friction and viscous structural damping on panel flutter
A Galerkin modal analysis is presented that accounts for the effects of both solid friction and viscous structural damping on panel flutter, based on unsteady aerodynamic forces from supersonic potential flow. The eigensolutions are made by complex eigenvalue computer routines. Markedly different effects on the flutter boundary of the two types of structural damping are obtained. This result establishes that there is not, in general, an "equivalent viscous" damping for solid-friction damping. For the limiting case of the static-aerodynamic approximation, a substantially different flutter dynamic pressure is obtained for solid friction identically zero compared with solid friction approaching zero as a limit. Use of the quasi-static aerodynamic approximation eliminates that difference
- …