University of California

About: University of California is a education organization based out in Oakland, California, United States. It is known for research contribution in the topics: Population & Layer (electronics). The organization has 55175 authors who have published 52933 publications receiving 1491169 citations. The organization is also known as: UC & University of California System.

Finfet transistor structures having a double gate channel extending vertically from a substrate and methods of manufacture

Abstract: A FinFET device is fabricated using conventional planar MOSFET technology. The device is fabricated in a silicon layer overlying an insulating layer (e.g., SIMOX) with the device extending from the insulating layer as a fin. Double gates are provided over the sides of the channel to provide enhanced drive current and effectively suppress short channel effects. A plurality of channels can be provided between a source and a drain for increased current capacity. In one embodiment two transistors can be stacked in a fin to provide a CMOS transistor pair having a shared gate.

The Efficiency of Some Nonparametric Competitors of the t-Test

Abstract: Consider samples from continuous distributions F(x) and F(x — θ). We may test the hypothesis θ = 0 by using the two-sample Wilcoxon test. We show in Section 1 that its asymptotic Pitman efficiency, relative to the f-test, never falls below 0.864. This result also holds for the Kruskal-Wallis test compared with the jF-test, and for testing the location parameter of a single symmetric distribution.

The Dodo Bird Verdict Is Alive and Well—Mostly

Abstract: We examined 17 meta-analyses of comparisons of active treatments with each other, in contrast to the more usual comparisons of active treatments with controls. These meta-analyses yielded a mean uncorrected absolute effect size for Cohen's d of .20, which is small and non-significant (an equivalent Pearson's r would be. 10). The smallness of this effect size confirms Rosenzweig's supposition in 1936 about the likely results of such comparisons. In the present sample, when such differences were corrected for the therapeutic allegiance of the researchers involved in comparing the different psychotherapies, these differences tend to become even further reduced in size and significance, as shown previously by Luborsky, Diguer, Seligman, et al. (1999).

Cardiac imaging and ablation catheter

Abstract: Method and apparatus for ablation of cardiac tissue includes a catheter (2, 60) having an elongated flexible body (6, 64), a tissue characterization assembly including a transducer (34) at the distal end (16) of the body and a tissue ablation assembly having a tissue ablation tip (32) at the distal end of the body. The tissue ablation tip is positioned adjacent the tissue to be ablated using the visualization assembly and then activated.

Abnormal left ventricular filling: an early finding in mild to moderate systemic hypertension.

Abstract: This study was undertaken to determine the prevalence and significance of diastolic left ventricular (LV) dysfunction in mild to moderate systemic hypertension. Rest and exercise equilibrium blood pool scintigraphy was performed in 39 hypertensive subjects (mean systolic blood pressure [BP] 156 ± 14 mm Hg [± standard deviation];mean diastolic BP 103 ± 5 mm Hg ) and 11 normal control subjects. These studies were analyzed for ejection fraction (EF), segmental wall motion, peak filling rate (PFR), time to PFR and filling fraction in the first third of diastole normalized for cycle length (first-third filling fraction). EF at rest was similar in the hypertensive patients and control subjects (0.63 ± 0.09 versus 0.65 ± 0.07);only 2 patients had a reduced EF. The EF response to exercise was normal in every hypertensive patient (increasing to a mean of 0.74 ± 0.08);only 1 patient had asynergy. In contrast, even when the 2 patients with abnormal systolic function were excluded, each index of diastolic filling was significantly different from the control group. PFR was lower (2.29 ± 0.49 vs 2.63 ± 0.39 end-diastolic volumes per second [EDV/s], p These findings indicate that diastolic abnormalities may be an early finding in hypertensive heart disease and that they are, at least in part, related to the degree of LV hypertrophy.