The present work concerns the second order ancillary determined by the tangent directions V = ∂y/∂θ|{y0; θ̂(y0)} at the observed data y 0 for fixed pivotal value, by using the structural approach of Fraser (1986). We show that for scalar parameter case, such an approximate ancillary is well defined and can be described as a rotation. These second order ancillaries are particularly useful in prov...

due to uncertain nature of wind and photovoltaic power units, the participation of this units in electricity markets is subjected to significant deviation penalties. this issue leads to despondency or even admission of these units in the competitive environment. with regard to this fact that the low deviations are available when predictions are performed in a short-term horizon and also distrib...

Climate change mitigation policies will bring with them ancillary or secondary benefits and costs in addition to those directly associated with avoided temperature changes. The ancillary public health effects of air pollutant emission changes (such as in reductions in particulate matter (PM)) have been the focus of some research attention. However, none of the major economic models of climate i...

Atmospheric correction (AC) algorithms for ocean color (OC) data processing usually rely on ancillary documenting the atmosphere and sea state to help calculation of remote sensing reflectance $R_{\text {RS}}$ from radiance measured b...