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High-sensitivity C-reactive protein (hs-CRP) performs important roles on the onset of metabolic syndrome and cardiovascular diseases (CVD), but little is known about association between hs-CRP and obesity-related metabolic abnormalities in young people without classical CVD risk factors. It thus motivated us to investigate association among hs-CRP, body fat mass (FM) distribution, and other cardiometabolic...
The under-determined direction of arrival (DOA) estimation problem for a mixture of circular and non-circular signals is studied in the context of sparse arrays and a novel compressive sensing based DOA estimation algorithm is proposed. Compared to a direct application of existing compressive sensing based DOA estimation algorithm, the new one can make a more effective use of the degree of freedoms...
Multilevel current source converter (MCSC) is an effective way to increase the power rating of conventional current source-fed motor drive, especially its current rating. However, there are still several challenges existing in this configuration, which mainly focus on its modulation and control techniques, and the inherent DC current imbalance issue. In this paper, a model predictive control (MPC)...
In this paper zero-vector intervals of eight-segment PWM scheme based on space vector modulation (SVM) is optimized for three-phase isolated buck matrix-type rectifier. With the proposed non-equally distributed zero-vector intervals of eight-segment PWM scheme, the output inductor current ripple of the converter is reduced comparing to that of the equally distributed zero-vector intervals. The steady...
Multilevel current source converter (MCSC) is an effective way to increase the power rating of conventional current source-fed motor drive, especially its current rating. However, there are still several challenges existing in this kind of configuration, which mainly focus on its space vector modulation (SVM) technique and the inherent DC current imbalance issue. In this paper, an SVM scheme with...
Phononic crystals have attracted intensive research interest for decades since the early 1990s. They exhibit a spatially periodic feature regarding the distribution of physical properties, geometry, boundary conditions, or/and external stimuli, making their wave spectrum quite different from the conventional continuous one, usually with frequency band gaps where waves cannot propagate through them...
A new inverter that have double-outputs based on flying capacitor topology is proposed for photovoltaic applications. The flying capacitor enables the converter to generate three-level output voltages, thus resulting in high-quality output waveforms. The new inverter has fewer semiconductor switches and flying capacitors (up to 25% and 50% less, respectively) than the conventional flying capacitor...
The idea of decomposition is becoming increasingly successful and popular in evolutionary multi-objective optimization. An efficient cone decomposition approach was further developed in the conical area evolutionary algorithm (CAEA). This approach improves the runtime efficiency and population diversity of decomposition-based algorithms effectively for bi-objective optimization in practice. In this...
With the rapid development of the Internet, massive Internet text data has brought new opportunities and challenges to the research of entity relation extraction. Open entity relation extraction overcomes the shortage of traditional methods, that relation types need to be predefined and plenty of training data need to be labeled in advance. A lot of work have been done for English Open ERE, and now...
Realization of automatically extracting the role relation from massive unstructured data facilitates the deep semantics of mining big data. Nowadays, methods for network construction are mainly either based on structured data, or based on a single view. Therefore social network construction of role relation in unstructured data based on multi-view is still a challenge. In this paper, a method is proposed...
With the popularity of the Internet, online news media are pouring numerous of news reports into the Internet every day. People get lost in the information explosion. Although the existing methods are able to extract news reports according to key words, and aggregate news reports into stories or events, they just list the related reports or events in order. Moreover, they are unable to provide the...
In multiobjective evolutionary algorithms, how to select the optimal solutions from the offspring candidate set significantly affects the optimization process. Usually, the selection process is largely based on the real objective values or surrogate model estimating objective values. However, these selection processes are very time consuming sometimes, especially for some real optimization problems...
A high-speed full-duplex system based on IFoF for the RAN is proposed and experimentally demonstrated, whose wireless carrier operates at the 28GHz-frequency. A 28GHz-full-duplex BS module is developed and the complete uplink/downlink of the system is experimentally established, which supports up to 2GHz analog bandwidth, and meanwhile 1Gb/s BPSK signal accomplishes the uplink/downlink transmission...
Thanks to the highly-dense lighting infrastructure in public areas, visible light emerges as a promising means to indoor localization and navigation. State-of-the-art techniques generally require customized hardware (sensing boards), and mainly work with one single light source (e.g., customized LEDs). This greatly limits their application scope. In this paper, we propose NaviLight, a generic indoor...
The failure of operating mechanism occupies the absolute majority of the high voltage circuit breaker failure. Identification and prediction of operating mechanism of the failure of high voltage circuit has a great effect in breaker maintenance and overhaul. In this paper, a mechanical status identification method based on covariance matrix is used to get mechanical characteristic signals from the...
A new type of wideband band-pass filter based on DGS structure is investigated with simulation in this paper. The filter is based on the SIW structure. In order to obtain advantages of compact structure and good performance, DGS and defected microstrip structure are adopted. The filter has the advantages of small size and easy integration. CST Microwave studio software is used to simulate the proposed...
To solve the problem of high sampling rate and massive data processing brought by high bandwidth in the Aerospace Communication System, researchers proposed compressive sensing theory to deal with wideband signal processing. Sparsity analysis is the fundamental point for the application of compressive sensing theory. This article studies the sparsity of the frequency hopping signal, which is a widely...
This paper proposes a dynamic channel utilization method to minimize transmission delay by considering radio interference and wireless link rate for software defined multi-channel wireless mesh networks (SD-WMN). The OpenFlow technology, which enables us to control flows by programming, is employed to effectively utilize multiple channels in SD-WMN for traffic balancing. Existing methods assume fixed...
This paper proposes a new five-level voltage source converter for medium-voltage (MV) and high-power applications. The proposed converter can operate over a wide range of voltages (2.4–7.2KV) with fewer number of power switches and components compared to the available five-level power converters. The operation of the proposed converter is studied and analyzed. To control the proposed converter, a...
In this paper, a family of Resonant Two-switch Boosting Switched-capacitor Converters (RTBSCs) with ZVS operation and a wide voltage-gain range is proposed. By adding a small resonant inductor to the TBSCs, the two bulky capacitor banks can be replaced by two much smaller resonant capacitors. Further by operating it above the resonant frequency, the transistors are ZVS turned on and diodes are ZCS...
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