With the deep integration between unmanned aerial vehicle (UAV) and wireless communication, UAV-based air-to-ground (AG) propagation channels need more detailed descriptions accurate models. In this paper, we aim to conduct cluster-based characterization modeling for AG channels. To our best knowledge, is first study that concentrates on clustering tracking of multipath components (MPCs) time-v...

We focus on a distributed learning problem in communication network, consisting of N nodes and central parameter server (PS). The PS is responsible for performing the computation based data received from nodes, which are transmitted over multiple access channel (MAC). objective function this su...

BACKGROUND AND AIMS A test was made of the hypothesis that the prostrate growth habit of the leaves of the geophyte Brunsvigia orientalis enables utilization of soil-derived CO(2) and is related to the presence of lysigenous air-filled channels characteristic of B. orientalis leaves. METHODS Brunsvigia orientalis was sampled at a field site. Leaf anatomy, stomatal density, leaf/soil gas excha...

the goal of this study was to determine the effects of the l-type calcium channel blockers verapamil and diltiazem on the currents of voltage-gated potassium channel (fkv1.4δn), an n-terminal-deleted mutant of the ferret kv1.4 potassium channel. measurements were made using a two electrode voltage clamp technique with channels expressed stably in xenopus oocytes. the fkv1.4δn currents displayed...

introduction: our previous studies showed that hydroalcoholic extract of leaf of vitis vinifera relaxes the phenylephrine-induced contraction in rat thoracic aorta. this effect was dependent on endothelial integrity and no-cgmp system. the vasorelaxant effect of extract was much lesser on kcl-induced contraction. we, therefore, postulated that k+ channels are involved. the main aim of the prese...