In this paper, a new embedded Z-H (EZ-H) buck-boost converter is proposed. In this topology, two identical dc voltage sources are embedded in a LC network in a series connection with the inductors. The proposed converter eliminates the shoot-through (ST) switching state and there is no need for a front-end diode. Other advantages of the proposed topology are having capability of buck and boost ...

Many appealing multicast services such as on-demand TV, teleconference, online games and etc. can benefit from high available bandwidth in multi-radio multi-channel wireless mesh networks. When multiple simultaneous transmissions use a similar channel to transmit data packets, network performance degrades to a large extant. Designing a good multicast tree to route data packets could enhance the...

In this paper, a generalized buck-boost Z-H converter based on switched inductors is proposed. This structure consists of a set of series connected switched-inductor cells. The voltage conversion ratio of the proposed structure is adjusted by changing the number of cells and the duty cycle. Like the conventional Z-H converter, the shoot-through switching state and the diode before LC network ar...

Neuronal responses to sensory stimuli are not only driven by feedforward sensory pathways but also depend upon intrinsic factors (collectively known as the network state) that include ongoing spontaneous activity and neuromodulation. To understand how these factors together regulate cortical dynamics, we recorded simultaneously spontaneous and somatosensory-evoked multiunit activity from primar...

Layered coding (LC) and multiple description coding (MDC) have been proposed as two different kinds of “quality adaptation” schemes for video delivery over the current Internet or wireless networks. To combine the advantages of LC and MDC, we present a new approach – Multiple Description Layered Coding (MDLC), to provide reliable video communication over a wider range of network scenarios and a...

We report a low-voltage and fast-response polymer network liquid crystal (PNLC) infrared phase modulator. By optimizing the UV curing temperature and LC host, we achieved V2= 22.8V at =1.55m and response time about 1ms. Such a PNLC-based spatial light modulator is useful for adaptive optics, adaptive lens, and laser beam steering. Author

International trade in plastics accounts for 5 % of total merchandise and involves all nations modern society. To explore global plastic life cycle trade, a cycle-based multilayer network (LC-PTMN), including raw materials layer, semifinished products waste is constructed. The structure the studied by analyzing each layer LC-PTMN from 1990 to 2019. results reveal that has prominent hierarchical...

Effect of L-carnitine administration on erythropoietin use in thalassemic minor haemodialysis patients Sir, We read with great interest the recent letter by Arduini et al. [1], on the effect of L-carnitine (LC) on erythrocyte survival in haemodialysis patients. In the same issue, there is a paper by Hothi et al. [2] showing that plasma free-carnitine (FC) levels fell from 26. They conclude that...