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An enhanced normalized least mean squares (NLMS) adaptive equalization scheme is proposed for single-carrier underwater acoustic (UWA) communications. The enhancement is achieved via two techniques: the sparse adaptation (SA) technique and the data reuse (DR) technique. The SA technique speeds up the convergence and improves the performance of the adaptive equalization, by taking advantage of the...
Reconfigurable radio frequency (RF) system has recently emerged as a promising solution to cope with multiple communication standards and high spectrum density. In this paper, we propose a novel optimization framework to efficiently program a reconfigurable RF system. In particular, two novel techniques, including (i) search space reduction by adaptive resolution and (ii) global polynomial optimization...
Protein-DNA docking is an important computational technique for generating native or near-native complex models. A docking program typically generates a number of complex conformations and predicts the docking solution based on interaction energies. However, incomplete sampling and energy function deficiencies can result in false positive protein-DNA complex models, which hampers its application in...
Exploiting camera sensors to conduct intruder detection has attracted a lot of research attention. Different from the traditional sensor with omni-directional sensing model, a camera sensor usually has a specified direction with a fixed sensing angle of sensing area. The sensing quality of coverage is critical to the application of coverage scheme. In this paper, we first investigate the complete...
A novel edge termination, referred to as etched 3-step junction termination extension with 4-space-modulated buffer trench regions (3S-4SMBT-JTE), is presented for ultrahigh voltage silicon carbide (SiC) power devices. In comparison with the traditional 3S-JTE, the 3S-4SMBT-JTE shows greatly reduced peak electric field (EF) around the corners and edges of the device, resulting in a superior breakdown...
Cluster ensemble is always a relatively active and challenging research direction in the field of machine learning and pattern recognition. The clustering algorithm has good theoretical basis which is widely used in machine learning, date mining, pattern recognition, imagine analysis and other areas. It becomes an important research in the field of cluster analysis, taking more and more researchers'...
Electrical stimulation therapy (EST) of lower esophageal sphincters (LES) is a new technique for the treatment of gastroesophageal reflux disease (GERD). In this paper, an implantable LES stimulator with wireless power transmission is proposed for the treatment of GERD. The LES stimulator is composed of an implantable pulse generator (IPG), an external controller, and a wireless power transmission...
In recent years, name disambiguation has become one of the hot topics to be resolved in natural language processing and information extracting. This paper introduces the meaning of research and theories of name disambiguation and briefly reviews the feature extraction, similarity calculation, clustering algorithm and evaluation method which enables readers to form a preliminary understanding on name...
Violet light sensing of a micro fiber (MF) with cladding of titanium dioxide (TiO2) nanoparticles on the tapered region is demonstrated. The device has a sensitivity of ∼0.28 dB/mW (1520 nm), which indicates that the TiO2 holds g reat potential in photonic applications such as fiber-optic sensors or controlled Devices.
We apply interdigitated microelectrode array (IDA) sensors for water quality monitoring. IDA sensors show a linear capacitive response to solution conductivity with no pH sensitivity. Device coated with a ClO− selective layer also detects free chlorine with good sensitivity and specificity over varieties of ions.
Existing approach to model sensor movement data as pairwise connections in networks implicitly assumes the Markov property and loses higher-order movement patterns. While the higher-order network (HON) captures higher-order movement patterns, there has not yet been a visualization tool tailored for HON. Based on our prior work, in this demo we present HoNVis, a comprehensive visualization and interactive...
Unlike the conventional first-order network (FoN), the higher-order network (HoN) provides a more accurate description of transitions by creating additional nodes to encode higher-order dependencies. However, there exists no visualization and exploration tool for the HoN. For applications such as the development of strategies to control species invasion through global shipping which is known to exhibit...
We present an efficient GPU-based solution to compute isosurface similarity maps for scientific volume data sets. Our approach first replaces exact isosurface extraction with a binary volume indicating whether each voxel intersects the surface or not. We then employ bounding volume hierarchy (BVH)-trees to speed up the distance field computation. Finally, a self-similarity map is generated from which...
In this paper, a novel Asymptotic Probability Estimation (APE) method is proposed to estimate the probability of correlated rare failure events for complex integrated systems containing a large number of replicated cells. The key idea is to approximate the failure rate of the entire system by solving a set of nonlinear equations derived from a general analytical model. An error refinement method based...
The single-carrier frequency-division multiple access (SC-FDMA) or the discrete Fourier transform (DFT) pre-coded orthogonal frequency-division multiple access (OFDMA) technique has been adopted in the uplink transmission of the long term evolution (LTE) terrestrial communication standard, for its lower peak-to-average power ratio (PAPR) and similar receiver complexity, compared with OFDM. It is,...
A novel implantation-free 2-step junction termination extension (2S) with 2 space modulated buffer trench (2SMBT) zones is presented for ultrahigh voltage (>10kV) 4H-SiC gate turn off thyristor (GTO). The systematic studies on the optimization of the structure by Sentaurus TCAD tools were performed. The results show the 2SMBT structure introduced to the conventional 2S can effectively improve the...
Based on the thermal properties of quantum dots, a novel method for bearing cage temperature measurement is proposed in this paper. Firstly, the synthesis of quantum dots is briefly introduced, and the composited film by DDA polyelectrolyte-CdTe quantum dots for temperature sensor is prepared according to the layer-by-layer self-assembly method. Then the linear reversible change of CdTe quantum dots...
In this paper, a compact multiple-input-multiple-output (MIMO) antenna is proposed for Ultra-wideband (UWB) applications. The proposed MIMO antenna is comprised by two symmetrically placed half slot antenna elements which one side of the slot is open to the air. Two antenna elements share the same ground plane, and each opening of the half slot gapes to the opposite directions. For covering the entire...
This paper proposes a K-means algorithm with the dynamic adjustable number of clusters. The algorithm uses the improved Euclidean distance formula to calculate the distance between the cluster center and data, by judging whether the distance is greater than the threshold to automatically adjust the number of clusters. Finally, the improved algorithm is applied to intrusion detection system to detect...
the Chinese chess of the computer games is an important research field in the artificial intelligence which is extremely challenging and popullar. The relative research provides huge contributions to the development of the artificial intelligence. In the paper, a complete computer games system is designed in the pratical situation. The system uses a variety of methods to improve the search game algorithms...
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