The flexoelectric and electronic properties of zig-zag graphene nanoribbons are explored under mechanical bending using state the art first principles calculations. A linear dependence induced out plane polarization on applied strain gradient is found. inferior can be improved by more than two orders magnitude hydrogen fluorine functionalization (CH CF nanoribbons). large effect predicted for n...

introduction: obesity and visceral fat accumulation after menopause are associated with insulin resistance and cardiovascular diseases. we investigated the interactive effect of aerobic-resistance training and estrogen replacement therapy on visceral fat, omentin-1 and homa-ir in ovariectomized rats. materials and methods: fifty female wistar rats were ovariectomized (ovx) and divided into 5 gr...

Disease incidence or mortality data are routinely recorded as summary counts for contiguous geographical regions (e.g., census tracts, zip codes, districts, or counties) and collected over discrete time periods. The count responses are typically accompanied by covariate information associated with the region (e.g., median family income, or percent with a specific type of education), and occasio...

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We use a unique data set of California births to ask whether intergenerational correlations in health contribute to the perpetuation of economic status. We find that if a mother was low birth weight, her child is significantly more likely to be low birth weight, even when we compare mothers who are sisters. Second, the intergenerational transmission of low birth weight is stronger for mothers i...

We investigate the strategic role of private labels in limiting retail competition. Private labels are unique differentiators for retailers. By launching and credibly committing to a strong private label program, a strong retailer can limit the market potential for competing retailers. Consequently, weaker retailers may not be able to meet threshold profits and exit the market. We derive the pr...

Previous research has shown that there exist “harbinger customers,” who systematically purchase new products that fail (retailers discontinue them). We extend this finding in two ways. First, we show that there are also some zip codes that are “harbinger zip codes”. If households in these zip codes adopt a new product this is a signal that the new product will fail. Second, we show that househo...