To minimize total transmit power in a system while guaranteeing the outage probability at the same time in a cooperative system, we propose and analyse two threshold-based hybrid relay selection and power allocation schemes for a threenode cooperative relaying system. They are designated as: the hybrid amplify-direct-forward relaying (HADF) and incremental hybrid decode-direct-forward relaying ...

We examine the power of constant depth circuits with sigmoid (i.e. smooth) threshold gates for computing boolean functions. It is shown that, for depth 2, constant size circuits of this type are strictly more powerful than constant size boolean threshold circuits (i.e. circuits with boolean threshold gates). On the other hand it turns out that, for any constant depth d , polynomial size sigmoid...

In present scenario, an increasing demand for mobile electronic devices such as cellular phones, laptop computers and personal digital assistants requires the use of power efficient circuits. To minimize the power dissipation and to increase the battery lifetime, the supply voltage, VDD has been scaled down continuously. So, scaling down the supply voltage, without scaling down the threshold vo...

PURPOSE To determine the relationship between maximum workload (W(peak)), the workload at the onset of blood lactate accumulation (W(OBLA)), the lactate threshold (W(LTlog)) and the D(max) lactate threshold, and the average power output obtained during a 90-min (W(90-min)) and a 20-min (W(20-min)) time trial (TT) in a group of well-trained cyclists. METHODS Nine male cyclists (.VO(2max) 62.7 ...

Enders and Granger provide critical values to test the null hypothesis of a unit-root against the alternative of threshold adjustment. However, in obtaining their critical values, Enders and Granger did not use a consistent estimate of the threshold nor did they use a lag-augmented data generating process. This note remedies both of these problems. The power of the test statistics using the con...

We measure, for the first time, the gain compression coefficient and above-threshold linewidth enhancement factor (alpha parameter) in quantum dot (QD) distributed feedback lasers (DFB) by time-resolved-chirp (TRC) characterization. The alpha parameter is measured to be 2.6 at threshold and increases to 8 when the output power of the QD DFB is increased to 3 mW. The dependence of the above-thre...

We study the phase space distribution of an optomechanical cavity near the threshold of self-excited oscillation. A fully on-fiber optomechanical cavity is fabricated by patterning a suspended metallic mirror on the tip of the fiber. Optically induced self-excited oscillation of the suspended mirror is observed above a threshold value of the injected laser power. A theoretical analysis based on...

Power optimization is the major problem in digital circuit design. In this paper using MTCMOS and stack techniques are proposed. Multi threshold CMOS sleep stack and logic stack, super cutoff sleep stack and logic stack are proposed. Stacking is introduced in MTCMOS concept which decreases leakage power based on the power dissipation of pMOS and nMO Stransistor. MTCMOS technique uses multiple v...

The difference in the H-mode power threshold in divertor and limiter configurations is numerically investigated by analysing the effect of boundary conditions imposed on the last closed magnetic surface (LCMS) and given by prescribed density and temperature e-folding lengths, δn and δT , respectively. It is demonstrated that the variation of δn and δT significantly affects the H-mode power thre...

A low-power level shifter (LS) using power gating technique is proposed for logic voltage shifting from near/subthreshold to above-threshold voltage domain. Level shifter allow for effective interfacing between voltage domains supplied by different voltage level. Usually conventional level shifter which can shift any voltage level signal to a desired higher level with low leakage current. The n...