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An on-line line switching method based on a three-stage strategy to effectively relieve overloads in power systems is proposed. The proposed method is designed for on-line applications in the control center environment. To balance the requirements of solution speed and of effectiveness, the proposed three-stage method is composed of screening stage, ranking stage and detailed analysis stage. One distinguishing...
Brain storm optimization (BSO) is a new kind of swarm intelligence algorithm inspired by human creative problem solving process. Human being is the most intelligent organism in the world and the brainstorming process popularly used by them has been demonstrated to be a significant and promising way to create great ideas for problem solving. BSO transplants the brainstorming process in human being...
We present a curved concentric electrothermal actuator design that has very mall lateral shift and tilting. The actuator is made up of folded curved Al/W bimorphs with fast thermal response and high sensitivity. Two MEMS mirror designs based on this actuator design have been fabricated. The first MEMS mirror is a tip-tilt-piston scanning mirror capable of scanning up to ± 11° at voltage less than...
Optical switching architectures with electronic buffers have been proposed to tackle the lack of optical Random Access Memories (RAM). Out of these architectures, the OpCut switch [1] achieves low latency and minimizes optical-electronic-optical (O/E/O) conversions by allowing packets to cut-through the switch. In an OpCut switch, a packet is converted and sent to the electronic buffers only if it...
Direct digital frequency synthesizer (DDFS) plays an important role in modern digital communications. This paper proposes a novel implementation of a 300MHz direct digital frequency based on modified CORDIC in 0.35μm CMOS technology. The CORDIC algorithm is a well-know iteration method for the efficient computation of fundamental functions, but each iterate selects the rotation direction by analyzing...
We consider the problem of similar Chinese character recognition in this paper. Engaging the Average Symmetric Uncertainty (ASU) criterion to measure the correlation between different image regions and the class label, we manage to detect the most critical regions for each pair of similar characters. These critical regions are proved to contain more discriminative information and hence can largely...
To reduce the classification errors of online handwritten Japanese character recognition, we propose a method for confusing characters discrimination with little additional costs. After building confusing sets by cross validation using a baseline quadratic classifier, a logistic regression (LR) classifier is trained to discriminate the characters in each set. The LR classifier uses subspace features...
Randić et al. proposed a famous spectral graphical representation of DNA sequences, and claimed that it avoids loss of information. In this paper we build two mathematical models for this graphical representation and prove that the claim is correct, and that it also avoids degeneracy. Moreover, we propose a new method to do similarity analysis of DNA sequences based on the spectral representation...
Research into maximizing the network lifetime is one of the most significant and challenging areas in wireless sensor networks (WSNs). By arranging sensors and sinks to realize target coverage and network connectivity respectively, an efficient schedule of sensors and sinks can prolong the network lifetime. However, the arrangements of sensors and sinks correlate with each other because each sensor...
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