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This paper proposes a new approach for finding the minimum number of post-contingency corrections to relieve overload. The security-constrained optimal power flow (SCOPF) problem with AC power flow constraints can be formulated as mixed integer nonlinear programming (MINLP), which is an NP-hard problem. A two-stage approach—screening and detailed analysis—is utilized to solve the non-convex MINLP...
Inadequate voltage control occurs when the controlling variable and controlled voltage of a control device are inversely related (i.e., not related in the usual way), potentially adversely affecting the system voltage level. This special situation can be identified by analyzing the elements of a sensitivity matrix constructed to show the relationship between the system control variables. Analysis...
For academic writing, elaborating an argument particularly addressing an argument strength is important to establish causal relations between sentences. However, when an argument becomes large or complex, elaborating an argument considering the argument strength is difficult. To solve this problem, this article presents a proposal for an argument elaboration support system using a Bayesian network...
Properties of non-freestanding silicon slot photonic crystal cavities for application to sensing are investigated by probing their resonance wavelength tuning as a function of covering material index. Sensitivities of 225 nm/RIU are obtained with Q around 30,000 and cavity mode volumes ∼ V=0.03(λ/n)3
This paper presents microing resonator sensor based on a quintuple-slot waveguide. We show that such microring resonator sensor can present a high sensitivity. To improve the bending efficiency of such sensor, an asymmetric structure is considered for the ring waveguide which reduces the sensitivity. The effect of different materials for top cladding and for high-index strips on the waveguide sensitivity...
Software-based self-test (SBST) is increasingly used for testing processor cores embedded in SoCs, mainly because it allows at-speed, low-cost testing, while requiring limited (if any) hardware modifications to the original design. However, the method requires effective techniques for generating suitable test programs and for monitoring the results. In the case of processor core testing, a particularly...
We present a generic method for analyzing the effect of process variability in nanoscale circuits. The proposed framework uses kernel and a generic tail probability estimator to eliminate the need for a-priori density choice for the nature of circuit variation. This allows capturing the true nature of the circuit variation from a few random samples of its observed responses. The data-driven, non-parametric,...
This paper proposes the Stationarity Index, a measure of the similarities of the auto correlation integral of a section of a time series and the cross correlation of that section with others of the same time series. This measure of similarity is a measure of the stationarity of the time series and therefore can be used not only to detect nonstationarity but to also quantify it. The index is then successfully...
Performance studies of parameters for bladder outlet obstruction in BPH patients before and after a TURP in terms of sensitivity and specificity can easily be criticized because in roughly 25% of the patients it is not clear if the clinical symptoms are related to increased outlet obstruction or impaired bladder contractility. This abstract presents objective alternatives.
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