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This paper employs the VAR-MGARCH models to investigate the price causal relationships and volatility spillovers effects between the CSI 300 index futures and spot markets in China. The 5 min high-frequency data from January 4, 2013 to October 31, 2013 are used. Four different multivariate GARCH models (BEKK, diagonal, constant conditional correlation, and dynamic conditional correlation) are compared...
High surface area activated carbon (AC) obtained by KOH activation was pulverized by ultrasonic air-jet pulverization equipment and the effect of particle size of AC on rate performance of electric double layer capacitors (ECs) was investigated by electrochemical impedance spectrometry using an equivalent circuit model based on a mixed kinetic and charge transfer control. The model parameters were...
Real-time measuring the concentration of gelatin is important for the gelatin production, but the equipment for monitoring concentration of gelatin on-line is so expensive and difficult to maintain that it is not suitable for application. At present, the off-line sampling and monitoring method with low accuracy is applied in general. Aiming to provide practical and affordable industrial-scale control...
As a network middleware, Tuplespace provides a powerful way for distributed computing. Having used the TSpaces implementation, we describe the design and implementation of TSPI, a Tuplespace based parallel programming library which can be called in C. Especially, TSPI supports some important functions such as reliability, high performance, computers joining and quitting dynamically. Furthermore, the...
As information security has been increasingly concerned on our campus network, in many occasions, it's highly useful to extract information from various network traces, including recognizing malware variants, detecting intrusion, and normalizing traffic. Traditionally, the extracting work often depends on the protocol specification. However, there are often no sufficient documents or time for parsing...
FuTUKE B3G TDD is designed to provide 100 Mbps peak data rate in both uplink and downlink. In this paper, based on the results from the field channel measurement, the radio transmission parameters of physical layer is optimized, and the downlink performance of FuTURE B3G TDD is evaluated in system level. To provide a multi-cell coverage, a soft frequency reuse is adopt. Further, a joint spatial and...
In multiuser OFDMA system, multiuser diversity gain can be achieved by channel aware subcarrier and power allocation, and most work in this field is focused on the none-real time service. For real time (RT) service, not only the data rate, but also the packet delay should be guaranteed. In this paper, the multiuser subcarrier allocation is investigated for real time service. By exploiting the queue...
For OFDMA system, the greedy subcarrier and bit loading can be adopted to exploit the multiuser diversity in frequency domain for the independent fading of different users and achieve higher cell throughput without considering the user fairness. Meanwhile in MIMO scenario, different UE experience independent spatial fading for different location, and thus the different antenna at the base station...
Multiple input and multiple output (MIMO) can greatly enhance the performance of wireless system. However, the limited battery life and terminal size of the user equipment (UE) in a cellular system put a constraint on the performance enhancement by MIMO. Especially when the transmitter has more antenna than the receiver in downlink, the conventional MIMO schemes can only exploit partial multiplexing...
As the evolution of 3G, long term evolution (LTE) standardization activity is issued in 3GPP and 3GPP2. In previous paper OFDMA is proposed for downlink of LTE. As the channel reciprocity can be obtained in TD-SCDMA LTE system, the channel status information (CSI) can be exploited at the transmitter to obtain the spatial-frequency multiuser diversity by joint spatial-frequency subcarrier and antenna...
With the growing demands on MEMS, miniaturized inductively coupled plasma (ICP) sources used in MEMS applications and MEMS fabrication processes have become more important. In order to build a low power and high efficiency ICP, a microstrip spiral resonator with capacitance-in-series structure (structure I) is proposed and analyzed. Resonating frequency tuning method and quality factor adjustment...
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