Research on Use of Computers for Handling Advanced Systems Human Factors Task Data Quarterly Status Report, 1 Oct. - 31 Dec. 1965

Computer use for handling advanced systems human factors task dat

Basic Human Factors Task Data Relationships in Aerospace System Design and Development Final Report, Aug. - Dec. 1965

Basic human factors task data relationships in aerospace system design and developmen

The role of surgery in the treatment of older women with breast cancer

A significant proportion of women diagnosed with breast cancer are over the age of 70 years and there is evidence that these patients frequently do not receive standard treatments, including surgical procedures and adjuvant therapies, which would be routine practice in younger age groups. The factors underlying this may include the physiological effects of ageing, differences in the biology and stage of the tumour at presentation, patient co-morbidities and patient and clinician preferences. The interaction of all these factors needs to be considered when individualising treatment plans for patients. For some patients this will need to be undertaken in the context of an extended multidisciplinary team setting with additional input from geriatricians, in addition to surgeons and oncologists, in defining a treatment plan. Little is known about the preferences of older patients in their choice of surgical treatment for breast cancer and further research is required to increase the evidence base for the rational management of older women with breast cancer

Who gains when workers train? Training and corporate productivity in a panel of British industries

There is a vast empirical literature of the effects of training on wages that are taken as an indirect measure of productivity. This paper is part of a smaller literature on the effects of training on direct measures of industrial productivity. We analyse a panel of British industries between 1983 and 1996. Training information (and other individual productivity indicators such as education and experience) is derived from a question that has been asked consistently over time in the Labour Force Survey. This is combined with complementary industry-level data sources on value added, wages, labour and capital. We use a variety of panel data techniques (including system GMM) to argue that training significantly boosts productivity. The existing literature has underestimated the full effects of training for two reasons. First, it has tended to treat training as exogenous whereas in reality firms may choose to re-allocate workers to training when demand (and therefore productivity) is low. Secondly, our estimates of the effects of training on wages are about half the size of the effects on industrial productivity. It is misleading to ignore the pay-off firms take in higher profits from training. The effects are economically large. For example, raising the proportion of workers trained in an industry by 5 percentage points (say from the average of 10% to 15%) is associated with a 4 per cent increase in value added per worker and a 1.6 per cent increase in wages

Predictors of Failure from Primary Therapy for Giardiasis in San Diego: A Single Institution Retrospective Review.

This study aimed to determine the presence of giardiasis among HIV patients in San Diego, the rate of failure of metronidazole treatment, and factors associated with treatment failure. We used a 7 year retrospective single-center case series of HIV-infected individuals with giardiasis at University of California San Diego Medical Center. Data were analyzed for the changes in the hematological, biochemical, and immunologic results at pre- and at-diagnosis levels. We also compared the changes at the diagnosis level among patients who were treated successfully and those who experienced treatment failure as defined by retreatment with a second course of antibiotics. In 29 Giardia lamblia-infected HIV patients, following diagnosis of G. lamblia, there was a non-significant decrement in cluster of differentiation 4 (CD4), but a statistically significant increase in the number of white blood cell (WBC). Other indices did not differ between pre- and at-diagnosis levels. Twenty patients (69%) were treated with a single course of metronidazole or tinidazole and seven patients (24.1%) were treated with more than one course of metronidazole. These seven patients had statistically significant higher hemoglobin at the time of diagnosis, but further studies are required to confirm if this is a consistent finding and if this can predict failure from primary therapy

AgRISTARS: Foreign commodity production forecasting. Country summary report, Australia

Australia is one of the world's major growers and exporters of wheat and as such is one of the countries of interest in the AgRISTARS program which endeavors to develop technology to estimate crop production using aerospace remote sensing. A compilation of geographic, political, and agricultural information on Australia is presented. Also included is a summary of the aerospace remote sensing, meteorological, and ground-observed data which were collected with respect to Australia, as well as a summary of contacts between AgRISTARS and Australia personnel

The Linear Boltzmann Equation as the Low Density Limit of a Random Schrodinger Equation

We study the evolution of a quantum particle interacting with a random potential in the low density limit (Boltzmann-Grad). The phase space density of the quantum evolution defined through the Husimi function converges weakly to a linear Boltzmann equation with collision kernel given by the full quantum scattering cross section.Comment: 74 pages, 4 figures, (Final version -- typos corrected