this paper investigates the multi-band ofdm (mb-ofdm) based physical (phy) layer proposal for ieee 802.15.3a working group on short-range high data-rate ultra-wide-band (uwb) communications. an overview of the mb-ofdm phy layer architecture with its various parameters is presented and the optimal choice of critical parameters is discussed. next, we derive the theoretical un-coded bit error rate...

Résumé— Cet article est une introduction au calcul et à l’optimisation sur les matrices symétriques positives semidéfinies de rang (faible) fixé. L’approche proposée est basée sur deux géométries riemanniennes quotient, qui permettent de calculer efficacement tout en préservant le rang et le caractère positif des matrices considérées. Le champ d’applications est vaste, et l’article survole quel...

Rang highlighted many of the practical aspects of caring for children's fractures, including forearm fractures. Contrary to the forearm shaft fracture rotational dogma of others, Rang said, “Immobilize the fracture in the position—any position [rotation]—in which the alignment is correct and the reduction feels stable. He also discussed the value of single-bone internal fixation with a Kirschne...

There are two critical interfaces that must be crossed when deploying any technological product. These are the hand-off from research to development and the hand-off from development to commercialization. These interfaces are frequently problematic, and are especially problematic when the technology being deployed is based on artificial intelligence. This paper will present our analysis of the ...

A fast two-vector Phase-locked loops (PLL) control has been proposed to the phase and frequency of grid voltage using 48-pulse switching. The novel controller senses shift as a deviation by load locked positive sequence. was designed track angle kept within satisfying rang at all time. PI- obtain desired performance PLL. PLL voltage. test results shows that new design can response sequence betw...