Abstract An optimal power allocation (OPA) policy for orthogonal frequency division multiplexing (OFDM)-based cognitive radio networks (CRNs) using underlay spectrum access model is presented under multiple secondary users (SUs) with energy harvesting (EH).The proposed algorithm can allocate transmission power to each SU on each subcarrier with the
This study of an old female monastic communities, present in Galatina from the early seventeenth century up to nineteenth century, it is proposed to certify as to inside of the flourishing monastery Capuchin Poor Clares, it has been able, 6B for centuries, to educate young girls to a poor lifestyle, through fasting and corporal mortification, as we
The discovery of Hongshanornis longicresta, a small ornithuromorph bird with Cargo Trousers unusually long hindlimb proportions, was followed by the discovery of two closely related species, Longicrusavis houi and Parahongshanornis chaoyangensis.Together forming the Hongshanornithidae, these species reveal important information about the early dive
Jatropha curcas is a promising feedstock for biofuel production because Jatropha oil is highly suitable for the production of biodiesel and bio-jet fuels.However, Jatropha exhibits a low seed yield as a result of unreliable and poor flowering.APETALA1 (AP1) is a floral meristem and organ identity gene in higher plants.The flower meristem identity g