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With the proliferation of smart phones, mobile applications (APPs) are increasingly being used for mobile work and entertainment. In order to satisfy people's various demands, there are enormous mobile applications being delivered through different mobile application markets. This brings markets owners huge opportunities and tough challenges simultaneously. It is very difficult to find proper APPs...
An improved rotated sub-space (RSS) algorithm is proposed for the application of array technology in partial discharge (PD) location in transformer. The algorithm is based on classic RSS algorithm and high-order cumulants, and it is studied through numerical simulation and experimental tests. Based on an L-shaped and a cross-shaped array, the simulation of single and multiple PD source direction is...
To reduce the number of elements and the cost of follow-up circuit of a $16 \times 16$ ultrasonic array sensor, two ultrasonic array sensors are designed. One is L shaped with 13 elements and the other is cross shaped with 25 elements. Based on these two ultrasonic array sensors, this paper compares the directional performance of a two-sided correlation transformation algorithm, which is a broadband...
In the field of process mining, we require certain techniques that can detect process changes in dynamic systems automatically. Through detecting changes in the process we can adjust and optimize the overall process timely. These technologies are named concept drift detection of process mining. The traditional concept drift algorithm in process mining domain mostly have high time complexity, high...
Three types of palygorskites and three types of NBR-modified phenolic resin are compressed respectively into new dual friction materials by material testing machine. Their friction, wear and impact resistance performances are studied experimentally. The results show that modified friction materials have better performance than unmodified phenolic resin materials. But compared with NBR-modified phenolic...
In order to suppress the vibration of piezoelectric plate effectively, the minimal control synthesis (MCS) algorithm based on Popov's criterion method is used to suppress vibration of a simple plate. The state equations of piezoelectric plate first-order and second-order mode are set up by experiment. The reference model is determined by LQR method. Simulation results show that the method have faster...
Aiming at the stability of smart structure vibration control, a model reference adaptive control (MRAC) algorithm based on Lyapunov's second method is used to suppress vibration of a simple plate. The state equations of Piezoelectric plate first-order and second-order mode are put forward and two adjustable parameters are determined. MRAC combining feedforward and feedback control style needn't be...
The performance of an enterprise is greatly influenced by its management capacity. From the aspect of management theory, control is a function of management. This paper was based on the control lever theory created by Robert Simons, Firstly proposed the conception of enterprise control power and worked out an indicators system of enterprise control power, then designed the questionnaire and researched...
LEACH is a hierarchy routing protocol for WSN (wireless sensor networks), which is superior to direct communication protocol, minimum-transmission-energy protocol and static clustering protocol. However, LEACH itself has some defects. In this paper LEACH-TM introduces the concept of trust, designs the cluster-head adjusting procedure and establishes multi-path with cluster-heads acting as routers...
Among the multiple multi-carrier modulation systems, the most sophisticated and classical system is orthogonal frequency division multiplexing (OFDM). However the emerging system wavelet packet multi-carrier modulation (WP-MCM), because of its obvious advantage, is gaining the scholars' concern rapidly. In this paper, two systems mentioned above were analyzed in detail from the theoretical foundation...
A new algorithm of QT interval measurement based on multiscale morphological derivative transform (MMDT) was described in this paper. After detection of QRS complex based on MMDT, we classified the waveform into four types based on its morphological characteristics and the optimum strategy for each type was described to detect the onset of Q wave. By introducing the 'wing' function, two referenced...
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