U.S. Health Care Spending: Comparison with Other OECD Countries

[Excerpt] The United States spends more money on health care than any other country in the Organization for Economic Cooperation and Development (OECD). The OECD consists of 30 democracies, most of which are considered the most economically advanced countries in the world. According to OECD data, the United States spent $6,102 per capita on health care in 2004 — more than double the OECD average and 19.9% more than Luxembourg, the second-highest spending country. In 2004, 15.3% of the U.S. economy was devoted to health care, compared with 8.9% in the average OECD country and 11.6% in second-placed Switzerland. Why does the United States spend this amount on health care? Economists break health care spending into two parts: price and quantity (which includes the number of visits to health care providers and the intensity of those visits). In terms of quantity, OECD data indicate that the United States has far fewer doctor visits per person compared with the OECD average; for hospitalizations, the United States ranks well below the OECD and is roughly comparable in terms of length of hospital stays. The intensity of service delivery is a different story: the United States uses more of the newest medical technologies and performs several invasive procedures (such as coronary bypasses and angioplasties) more frequently than the average OECD country. In terms of price, the OECD has stated that there is no doubt that U.S. prices for medical care commodities and services are significantly higher than in other countries and serve as a key determinant of higher overall spending. What does the United States get for the money it spends? Said slightly differently, does the United States get corresponding value from the money it spends on health care? The available data often do not provide clear answers. For example, among OECD countries in 2004, the United States had shorter-than-average life expectancy and higher-than-average mortality rates. Does this mean that the U.S. system is inefficient in light of how much is spent on health care? Or does this reflect the greater prevalence of certain diseases in the United States (the United States has the highest incidence of cancer and AIDS in the OECD) and less healthy lifestyles (the United States has the highest obesity rates in the OECD)? These are some of the issues that confound international comparisons. However, research comparing the quality of care has not found the United States to be superior overall. Nor does the U.S. population have substantially better access to health care resources, even putting aside the issue of the uninsured. Although the United States does not have long wait times for non-emergency surgeries, unlike some OECD countries, Americans found it more difficult to make same-day doctor’s appointments when sick and had the most difficulty getting care on nights and weekends. They were also most likely to delay or forgo treatment because of cost. The OECD data and other research provide some insight as to why health care spending is higher in the United States than in other countries, although many difficult research issues remain. This report presents some of the available data and research and concludes with a summary of study findings

Decision Taking for Selling Thread Startup

Decision Taking is discussed in the context of the role it may play for a selling agent in a search market, in particular for agents involved in the sale of valuable and relatively unique items, such as a dwelling, a second hand car, or a second hand recreational vessel. Detailed connections are made between the architecture of decision making processes and a sample of software technology based concepts including instruction sequences, multi-threading, and thread algebra. Ample attention is paid to the initialization or startup of a thread dedicated to achieving a given objective, and to corresponding decision taking. As an application, the selling of an item is taken as an objective to be achieved by running a thread that was designed for that purpose

A robust enhancement to the Clarke-Wright savings algorithm

We address the Clarke and Wright (CW) savings algorithm proposed for the Capacitated Vehicle Routing Problem (CVRP). We first consider a recent enhancement which uses the put first larger items idea originally proposed for the bin packing problem and show that the conflicting idea of putting smaller items first has a comparable performance. Next, we propose a robust enhancement to the CW savings formulation. The proposed formulation is normalized to efficiently solve different problems, independent from the measurement units and parameter intervals. To test the performance of the proposed savings function, we conduct an extensive computational study on a large set of well-known instances from the literature. Our results show that the proposed savings function provides shorter distances in the majority of the instances and the average performance is significantly better than previously presented enhancements

Putting Instruction Sequences into Effect

An attempt is made to define the concept of execution of an instruction sequence. It is found to be a special case of directly putting into effect of an instruction sequence. Directly putting into effect of an instruction sequences comprises interpretation as well as execution. Directly putting into effect is a special case of putting into effect with other special cases classified as indirectly putting into effect

Light bending in the galactic halo by Rindler-Ishak method

After the work of Rindler and Ishak, it is now well established that the bending of light is influenced by the cosmological constant {\Lambda} appearing in the Schwarzschild-de Sitter spacetime. We show that their method, when applied to the galactic halo gravity parametrized by a constant {\gamma}, yields exactly the same {\gamma}- correction to Schwarzschild bending as obtained by standard methods. Different cases are analyzed, which include some corrections to the special cases considered in the original paper by Rindler and Ishak.Comment: 15 page

Sharing of hand kinematic synergies across subjects in daily living activities

The motor system is hypothesised to use kinematic synergies to simplify hand control. Recent studies suggest that there is a large set of synergies, sparse in degrees of freedom, shared across subjects, so that each subject performs each action with a sparse combination of synergies. Identifying how synergies are shared across subjects can help in prostheses design, in clinical decision-making or in rehabilitation. Subject-specific synergies of healthy subjects performing a wide number of representative daily living activities were obtained through principal component analysis. To make synergies comparable between subjects and tasks, the hand kinematics data were scaled using normative range of motion data. To obtain synergies sparse in degrees of freedom a rotation method that maximizes the sum of the variances of the squared loadings was applied. Resulting synergies were clustered and each cluster was characterized by a core synergy and different indexes (prevalence, relevance for function and within-cluster synergy similarity), substantiating the sparsity of synergies. The first two core synergies represent finger flexion and were present in all subjects. The remaining core synergies represent coordination of the thumb joints, thumb-index joints, palmar arching or fingers adduction, and were employed by subjects in different combinations, thus revealing different subject-specific strategies

Antimatter Bounds by Anti-Asteroids annihilations on Planets and Sun

The existence of antimatter stars in the Galaxy as possible signature for inflationary models with non-homogeneous baryo-synthesis may leave the trace by antimatter cosmic rays as well as by their secondaries (anti-planets and anti-meteorites) diffused bodies in our galactic halo. The anti-meteorite flux may leave its explosive gamma signature by colliding on lunar soil as well as on terrestrial, jovian and solar atmospheres. However the propagation in galaxy and the consequent evaporation in galactic matter gas suppress the lightest (m < 10^(-2)g) anti-meteorites. Anisotropic annihilation of larger anti-meteorites within a narrow mass window, maybe rarely deflected, bounced by the galactic gas disk, escaping detection in our solar system. Nevertheless heaviest anti-meteorites (m > 10^(-1)g up to 10^(6)g) are unable to be deflected by the thin galactic gas surface annihilation; they might hit the Sun (or rarely Jupiter) leading to an explosive gamma event and a spectacular track with a bouncing and even a propelling annihilation on cromosphere and photosphere. Their anti-nuclei annihilation in pions and their final hard gammas showering may be observabe as a "solar flare" at a rate nearly comparable to the observed ones. From their absence we may infer bounds on antimatter-matter ratio near or below 10^(-9) limit: already recorded data in BATSE catalog might be applied.Comment: 6 pages, more accurate estimate and minor correction

Generation of Narrow-Band Polarization-Entangled Photon Pairs for Atomic Quantum Memories

We report an experimental realization of a narrow-band polarization-entangled photon source with a linewidth of 9.6 MHz through cavity-enhanced spontaneous parametric down-conversion. This linewidth is comparable to the typical linewidth of atomic ensemble based quantum memories. Single-mode output is realized by setting a reasonable cavity length difference between different polarizations, using of temperature controlled etalons and actively stabilizing the cavity. The entangled property is characterized with quantum state tomography, giving a fidelity of 94% between our state and a maximally entangled state. The coherence length is directly measured to be 32 m through two-photon interference.Comment: 4 pages, 4 figure