498 research outputs found

    Inverse wing design in transonic flow including viscous interaction

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    Several inverse methods were compared and initial results indicate that differences in results are primarily due to coordinate systems and fuselage representations and not to design procedures. Further, results from a direct-inverse method that includes 3-D wing boundary layer effects, wake curvature, and wake displacement are represented. These results show that boundary layer displacements must be included in the design process for accurate results

    Bloom Programme: Micro-distribution of Mars Products in Manila

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    This paper provides an overview of the Bloom micro-distribution programme, an initiative spearheaded by Mars Catalyst and Mars Wrigley Confectionery Philippines that engages female sellers in Manilla, Philippines, as distributors of Mars Wrigley confectionery products. The case includes assessment of the multi-dimensional impact of Bloom on the 300+ sellers as well as the challenges the project faces. Data for this paper were drawn from documents provided by Bloom staff, key informant interviews, and surveys of sellers conducted by Bloom in 2016; the programme remains active

    Effects of pelleting and pellet conditioning temperatures on weanling pig performance

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    Two studies were conducted to evaluate the effects of pelleting and pellet conditioning temperature of diets containing 5% spray-dried animal plasma (SDAP) on weanling pig growth performance. In Exp. 1, conditioning temperatures evaluated were 140, 150, 160, and 170°F. In Exp. 2, pellet conditioning temperatures were 140, 155, 170, 185, and 200°F. The results suggest that pellet conditioning temperatures above 170°F decrease weanling pig performance from d 0 to 7 after weaning. Pellet conditioning temperature should not exceed 170OF (exit temperature of 180°F) for nursery diets containing 5% SDAP.; Swine Day, Manhattan, KS, November 18, 199

    Are CDS spreads predictable? An analysis of linear and non-linear forecasting models

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    We assess the statistical and economic performance of various forecasting models to predict the future values of the iTraxx index. We find that linear models outperform non-linear models out-of-sample. Some trading strategies based on forecasts generated by the linear models deliver positive Sharpe ratios

    Relativity, rank and the utility of income

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    This is the accepted version of the following article: Rablen, M. D. (2008), Relativity, Rank and the Utility of Income. The Economic Journal, 118: 801–821, which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1111/j.1468-0297.2008.02143.x/abstract.Relative utility has become an important concept in several disjoint areas of economics. I present a cardinal model of income utility based on the supposition that agents care about their rank in the income distribution and that utility is subject to adaptation over time. Utility levels correspond to the Leyden Individual Welfare Function while utility differences yield a version of the prospect theory value function, thereby providing a new and shared derivation of each. I offer an explanation of some long-standing paradoxes in the wellbeing literature and an insight into the links between relative comparisons and loss aversion.ESR

    Aggregate dividends and consumption smoothing

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    We show that net equity payouts from the corporate sector play a crucial role in helping individuals manage their consumption path across the business cycle. In particular, we show that, as investors' desire to smooth consumption increases, optimal aggregate dividends become both more volatile and more counter-cyclical to help counterbalance pro-cyclical labor income. These findings are robust to whether or not agency conflicts exist in the economy

    Why are aggregate equity payouts pro-cyclical?

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    We use two general equilibrium models to explain why changes in the external economic environment result in pro-cyclical aggregate dividend payout behavior. Both models that we consider endogenize low elasticity of investment. The first model incorporates capital adjustment costs, while the second one assumes that risk-averse managers maximize their own objective function rather than shareholder wealth. We show that, while both models generate pro-cyclical aggregate dividends, a feature consistent with the observed business-cycle pattern of payouts from well-diversified portfolios, the second model provides a more likely explanation for this effect. Our findings emphasize the importance of incorporating agency conflicts when considering the relationship between the external economic environment and the financial behavior of businesses
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