In this paper we propose a method to robustly estimate linear regression quantiles with censored data. We adjust the estimator recently developed by Portnoy by replacing the Koenker-Bassett regression quantiles with the regression depth quantiles. The resulting optimization problem is solved iteratively over a set of grid points. We show on some examples that, contrary to the Koenker-Bassett ap...

Software and hardware enhancements to an electric 6-string cello are described with a focus on a new mechanical tuning device, a novel rotary sensor for bow interaction and control strategies to leverage a suite of polyphonic sound processing effects.

Abstract We investigate the effects of using different sources investment leverage, that is, securities with embedded leverage and traditional margin accounts, on portfolio performance retail investors, recognizing these may be conditional investor attention. find investors who trade underperform those do not have accounts; we also trading show even poorer than margin. The negative effect usage...

Changes in credit risk may arise when either the value or the risk of corporate assets changes. Changes in the equity value associated with the changes in the asset value and changes in asset risk can be characterized into potentially countervailing direct and indirect effects. The indirect effect of risk on equity value is a function of factors that affect the debt value of including leverage,...

Changes in credit risk may arise when either the value or the risk of corporate assets changes. Changes in the equity value associated with the changes in the asset value and changes in asset risk can be characterized into potentially countervailing direct and indirect effects. The indirect effect of risk on equity value is a function of factors that affect the debt value of including leverage,...

In addition to the special issue articles, we have asked three leading researchers in software engineering for their perspectives on [email protected]. We include contributions from Betty H.C. Cheng, Anthony Finkelstein, and Bran Selic as sidebars in this guest editors’ introduction. Their insights add significantly to the value of this special issue, and we thank them for their thoughtful contri...

In modern portfolio theory, the balancing of expected returns on investments against uncertainties in those returns is aided by the use of utility functions. The Kelly criterion offers another approach, rooted in information theory, that always implies logarithmic utility. The two approaches seem incompatible, too loosely or too tightly constraining investors’ risk preferences, from their respe...

Article history: Received 11 June 2012 Received in revised form 19 December 2013 Accepted 20 December 2013 Available online 28 December 2013 Adjustment costs play a prominent role in explanations of capital structure, but the extent of their economic importance is unknown. A credit line has institutional features important for this analysis, notably its sunk costs of access to the debt market, ...

We investigate how the use of higher wavenumbers (smaller scales) in the galaxy clustering power spectrum influences cosmological constraints. We take into account uncertainties from nonlinear density fluctuations, (scale dependent) galaxy bias, and baryonic effects. Allowing for substantially model independent uncertainties through separate fit parameters in each wavenumber bin that also allow...