There exist polynomial identities asociated to normal form, which yield an existence and uniqueness theorem. The space of normalized real hypersurfaces has a natural group action. Umbilic point is defined via normal form. A nondegenerate analytic real hypersurface is locally biholomorphic to a real hyperquadric if and only if every point of the real hypersurface is umbilic. 0. Introduction An a...

We present a proof of the existence and uniqueness theorem of a normalizing biholomorphic mapping to Chern-Moser normal form. The explicit form of the equation of a chain on a real hyperquadric is obtained. There exists a family of normal forms of real hypersurfaces including Chern-Moser normal form. 0. Introduction Let M be an analytic real hypersurface with nondegenerate Levi form in a comple...

In order to reflect the space-based full chain information of detection process comprehensively and objectively, we proposed a novel modular evaluation metric discuss target, background, system independently. It takes equivalent radiation intensity as parameter, which can evaluate performance quantitatively. this paper, taking fifth-generation American stealth fighter F22 an example, mathematic...

This paper presents the computational investigation of air flow over an aircraft at realistic speeds while demonstrating importance extending existing analysis to complete airplane and how pivotal it is in improving its in-flight performance. The study done for F16 F22 using ANSYS Fluent (19.2) obtain pressure distribution, shear stress distribution temperature variation on surface aircraft. Si...

Recent papers have found that often immigrants are overqualified relative to native-born workers when comparing an individual’s education to the ‘average’ education in their occupation. We show that these results are sensitive to differences in the education distribution between immigrants and the native born. Using data for New Zealand, which has an immigration policy that favours skilled immi...

Using administrative data from the state of Georgia, the authors find that average wages among documented workers are lower in industries that employ undocumented workers and that a greater share of undocumented workers in those industries further lowers wages. In addition, undocumented workers have significantly lower labor supply elasticity, likely as a result of their limited employment and ...

Scandinavian countries are often portrayed in policy debates as model examples having shown how to square concerns for efficiency and equity. The core principle of the Scandinavian welfare model is an individual entitlement to public sector provisions combined with collective financing via taxes. However, a high employment rate is needed to ensure financial viability of this model. The Scandina...

Remittances and Income Smoothing Due to inadequate savings and binding borrowing constraints, income volatility can make households in developing countries particularly susceptible to economic hardship. We examine the role of remittances in either alleviating or increasing household income volatility using Mexican household level data over the 2000 through 2008 period. We correct for reverse ca...