We investigated the behavior of the forward bias current-voltage-temperature I-V-T characteristics of inhomogeneous Ni/Au –Al0.3Ga0.7N/AlN/GaN heterostructures in the temperature range of 295–415 K. The experimental results show that all forward bias semilogarithmic I-V curves for the different temperatures have a nearly common cross point at a certain bias voltage, even with finite series resi...

written for a particular gain. Then KGH = −1 so that a) when the amplitude of KGH is 1 or 0 dB and b) phase is 180o then we have the system just become unstable. Both the conditions have to be fulfilled. Hence, if we ask the question: How far is the system from instability ? We get two answers. The gain increment required at the frequency where phase is 180o and the phase increment required at ...

Abstract. In this paper, firstly we define n×n circulant matrices U =Circ (U0, U1, . . . , Un−1), V =Circ (V0, . . . , Vn−1), T =Circ (T0, . . . , Tn−1) and S =Circ (S0, . . . , Sn−1), where {Un} and {Vn} are generalized Fibonacci and Lucas types second order linear recurrences, {Tn} and {Sn} are Tribonacci sequences with different initial conditions. After we study spectral noms of these matri...

The capability of the dimensions measurement by ten appraisers of ten samples for Charpy Vnotch pendulum impact test was evaluated by Youden plot, analysis of measurement uncertainties, Measurement Systems Analysis (MSA), %P/T, Z-score, Mandel’s statistics and ttest. The group of “better” appraisers given by Youden plot was validated by majority of other methods.

In response to my analysis of the Wellstone tragedy (READER WEEKLY, 28 November 2002, pp. 18-19) and related discussion of this event, I have received quite a few emails, many of which have taken strong exception to the very idea that George W. Bush could ever have been involved in something of this kind. My suggestion that Republicans may have been motivated to take Wellstone out, alas, is not...