In brief

Abstract

PAGE 589 Swarm reinforcement learning that extends standard Q-learning to multi-agent systems via the development of a real-time swarm algorithm has been presented by a large collaboration of researchers from Italy. The novel approach achieves a substantial speed increase over standard learning methods and promises enhanced learning performance in more complex environments. PAGE 573 Researchers from Belgium and China jointly present a multi-functional dual band frequency reconfigurable antenna with pattern diversity for use in wireless communication systems. The antenna consists of a composite right/left-handed transmission line inspired structure, with simulations and experiment validating the new concept. Optimal maze solution. PAGE 619 A team of researchers from Japan have produced a neural optical implant which is monolithically integrated with a micro-light-emitting diode (µLED), a micro-photodiode, and a polymer waveguide. This tool can suppress the influence of temperature while making good use of the advantages offered by the LED, with the µLED placed outside, but still able to optically stimulate, the brain. Metamaterial antenna prototype. PAGE 599 Sequence pairs with good correlation can be applied in many practical systems, with a pair of Chinese researchers having constructed a class of sequence pairs by interleaving two sequences derived from the Fermat quotient. The produced sequence pairs subsequently have almost perfect correlation. SEM image of substrate after deep RIE etching. PAGE 574 Researchers from China have presented a compact self-isolated MIMO antenna system based on a quarter-mode substrate integrated waveguide cavity. With the advantages of compact size, high isolation, and good radiation performance, the proposed antenna has many applications in wireless communications. A section of the cross-correlation proof employed. Half-mode electric field distribution.