Abstract In this work, we report a radio galaxy with precessing jets, double-peaked emission lines and the presence of two compact components projected separation ?6 parsec in very long baseline interferometry (VLBI) observations. The emission-line peak separations could be suggesting supermassive binary black hole (BBH) 6.3 parsec, matching VLBI results. kinematic jet precession model applied ...

In this paper are determined the principal curvatures and principal curvature lines on canal surfaces which are the envelopes of families of spheres with variable radius and centers moving along a closed regular curve in R3. By means of a connection of the differential equations for these curvature lines and real Riccati equations, it is established that canal surfaces have at most two isolated...

We propose a stochastic model allowing property and casualty insurers with multiple business lines to measure their liabilities for incurred claims risk calculate associated capital requirements. Our includes many desirable features which enable reproducing empirical properties of loss ratio dynamics. For instance, our integrates double generalized linear relying on accident semester developmen...

To view the full product, including the scope and methodology, click on the link above. For more information, contact Anu Mittal at (202) 512-3841or [email protected]. NOAA has determined that the Pacific coast states of Alaska, California, Hawaii, Oregon and Washington, as well as Puerto Rico and the U.S. Virgin Islands in the Caribbean Sea, face the greatest tsunami hazard. The east and Gulf co...

PURPOSE To evaluate the efficacy of single-segment Intacs and compare with double-segment Intacs in subjects with post-LASIK ectasia and keratoconus. DESIGN Retrospective comparative analysis. METHODS setting: Boxer Wachler Vision Institute, Beverly Hills, California, USA. study population: Thirty-seven eyes of 28 patients with keratoconus and post-LASIK ectasia classified into two groups: ...