We present the observations of artificial ionospheric modification experiment EISCAT on 18 October 2012 in Tromsø, Norway. When pump alternating O mode and X is switched on, UHF radar observation shows some strong enhancements electron density, ion lines plasma lines. Based existing theories, we find following: First, during experiment, frequency line (fL), (fia) (fh) matches fL = fh − 3fia 5fi...

Abstract We present millimeter and submillimeter continuum observations for 36 sources with potentially large black hole shadows at 230 345 GHz using the Submillimeter Array. The are selected based on criterion of diameter shadows. Our motivation is to explore nature accretion flow potential candidates low-luminosity active galactic nuclei (LLAGNs) through photometry millimeter/submillimeter wa...

Dual-energy X-ray absorptiometry (DXA) of the calcaneus is useful in assessing bone mass and fracture risk at other skeletal sites. However, DXA yields an areal bone mineral density (BMD) that depends on both bone apparent density and bone size, potentially complicating interpretation of the DXA results. Information that is more complete may be obtained from DXA exams by using a volumetric dens...

How do we derive a sense of the separation of points in the world within a space-variant visual system? Visual directions are thought to be coded directly by a process referred to as local sign, in which a neuron acts as a labeled line for the perceived direction associated with its activation [1, 2]. The separations of visual directions, however, are not given, nor are they directly related to...