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The de novo assembly aims to reconstruct the genome of the unknown species. Many algorithms have been proposed for de novo assemblies. Due to problems of repetitive regions and sequencing errors, contigs usually contain a large amount of misassemblies. Consequently, the misassembly correction of contigs is a challenging and significant work, which receives considerable attentions from researchers...
Osteoarthritis (OA) is the most common type of arthritis. Analgesics are widely used in the process of the treatment of arthritis. Analgesics are particularly used by OA patients which may increase the risk of cardiovascular disease by 20% to 50% overall. In this study, we proposed an interpretable model to predict side effects of analgesics on cardiovascular disease for OA patients. One task of our...
Interruption property of vacuum interrupter with four different contact materials were researched by experimental method. The diameter of Wan-type contact and Spiral-type CuCr25 contact was 55mm. The diameter of Spiral-type CuCr35 and CuCr30 was 58mm. The contact thickness was 10mm before breaking test and the contact thickness was about 9mm after breaking test. The breaking current was 31.5kA and...
The modular multilevel converters become more and more popular in high power applications in recent years. The solution to make the MMC operate well under the submodule failure is a key technology to increase reliability of the MMC-based systems. In this paper, a fault tolerant control method based on the zero-sequence voltage injection is proposed to maintain stable line-to-line voltage under submodule...
Electromagnetic force simulation of isolation knife switch was done by simulation software. The phase angle difference of three phases was 120°, current amplitude was applied in one of three phases respectively for three times simulation. The electromagnetic force of number 4 contact finger of middle phase was tensile force without conductive bridge model, and that of number 4, number 10, number 16...
In this paper, the incipient fault diagnosis problem is studied for traction motor sensor fault. The data used for the fault diagnosis is from sensors of the closed-loop traction motor system, in which the deviations between normal and bias faulty data are of 1 %∼5 % and between normal and gain faulty data are of 1%∼10%. Considering the non-stationary of the data, the Ensemble Empirical Mode Decomposition...
The optimal thermal design issue of a forced aircooled heat sink to obtain satisfied performance indices such as thermal resistance, pressure drop, geometry, total weight and cost is great of practical value for the stable and safe operations of a power electronic equipment. This paper formulates this issue firstly as a typical constrained optimization problem by considering the entropy generation...
Memory price will continue dropping in the next few years according to Gartner. Such trend renders it affordable for in-memory key-value stores (IMKVs) to maintain redundant memory-resident copies of each key-value pair to provision enhanced reliability and high availability services. Though contemporary IMKVs have reached unprecedented performance, delivering single-digit microsecond-scale latency...
Due to rich characteristics and functionalities, PDF format has become the de facto standard for the electronic document exchange. As vulnerabilities in the major PDF viewers have been disclosed, a number of methods have been proposed to tame the increasing PDF threats. However, one recent evasion exploit is found to evade most of detections and renders all of the major static methods void. Moreover,...
Physiological stress is human body's response to a challenge by multiple systems in the body, in which ANS (Autonomic Nervous System) plays key roles. This paper proposes a stress level evaluation method based on time-frequency domain analysis of HRV (Heart Rate Variability) features combining statistical optimization. The most reliable and efficient indicator to ANS is HRV features obtained from...
A compact monopole antenna with a volume of only 8×32×5 mm3 for smartphones applications is presented. The antenna consists of two meander monopoles, having an S-shape and L-shape, on one side of the substrate and a tuning stub on the other side. Simulated and measured results show that the antenna has a dual-band of 824–960 MHz and 1700–3800 MHz which can cover the frequency bands for the GSM850,...
In this paper, a wideband circularly polarized (CP) slot-antenna array is presented. A feeding network with four output ports is designed using metamaterial transmission line (MM TL) to feed four slot antenna elements, forming a sequential-rotation array (SRA) and resulting in CP operation. The antenna array is studied and designed using computer simulation and measurement. The measured results show...
Signal processing is one of the key points in brain computer interface (BCI) application. The common methods in BCI signal classification include canonical correlation analysis (CCA), support vector machine (SVM) and so on. However, because BCI signals are very complex and valid signals often come with confounded background noise, many current classification methods would lose meaningful information...
Metallic components such as USB connectors used in mobile phones can easily affect the performances of antennas placed nearby. This paper illustrates the use of the metallic USB connector in a very compact loop antenna with a volume of 5×8×60 mm3 to generate an additional resonant mode at about 3.13 GHz. A standard metallic USB connector is placed inside the loop radiator of the antenna to generate...
A high-speed Chinese Brain-computer interface (BCI) speller was designed and implemented in this paper. A visual stimulation method called the motion checkerboard stimulation was used to elicit steady-state visual evoked potentials (SSMVEP). With a 10 × 8 high-density matrix interface, phonetic symbols or Chinese characters (sinograms) were presented for selection, and only two selections per character...
Traditional steady - state visual evoked potential (SSVEP) using light flicker stimulation may easy cause visual fatigue with a consequent reduction of recognition accuracy. In the previous study, we proposed a steady - state motion visual evoked potential (SSMVEP) brain - computer interface (BCI) method. A black - white ring - shaped checkerboard was used as the visual stimulus paradigm in this study...
Based on the complex network theory, this paper constructs the regional industry network by using the 2009–2014 corporate transfer data between enterprises of a bank in Yiwu, explores its topology structure, and analyzes the industrial structure change through the construction of homogeneous and heterogeneous networks. The result shows that 2012 as the boundary, the integral characteristic of industry...
This paper considers the problem of dynamic output feedback H∞ controller design for linear systems with input and output imprecision. In the controlled systems, the measurement and control signal transmissions from the plant to the controller and the controller to the plant, respectively, are assumed to be imprecise, and norm-bounded uncertainties are utilized to model the phenomenon of the imprecise...
Molecular orbital tomography (MOT) opens up a window to probe molecular structure with high-order-harmonic generation. A major difficulty in MOT is the measurement of harmonic phase, which is usually quite complicated in experiment. In this work, we experimentally demonstrate that this can be overcomed by combining both MOT and diffractive imaging.
The admissible tracking consensualization problem and the admissible containment consensualization problem of singular multi-agent systems are discussed. The sufficient and necessary condition to achieve the above two admissible consensus problems are provided. At the same time two constructive algorithms are presented to design the gain matrices of protocols. Two numerical examples are given to show...
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