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With the rapid development of Internet technologies such as cloud computing and big data, the scales of distributed information systems in big companies have grown to enormous sizes. Automatic detection and diagnosis of system faults in the large-scale information systems is complicated and important in both practice and research. In this paper, we propose a Graph-based Fault Diagnosis approach in...
In this paper, we propose a variant of searchable public-key encryption named hidden-token searchable public-key encryption with two new security properties: token anonymity and one-token-per-trapdoor. With the former security notion, the client can obtain the search token from the data owner without revealing any information about the underlying keyword. Meanwhile, the client cannot derive more than...
Classification methodology is widely used by plant breeders to group environments on the results of regional evaluation trials to assist selection among genotypes. To be effective, Multi-environment trial (MET) is a key point for breeders to test productivity and adaptability of crop varieties. With the development of science and technology in breeding, for METs at any stage of a breeding program,...
In order to meet voltage targets, energy storage cells are usually used in series. The imbalance of series-connected cells leads to the premature degradation and a decrease in the available energy of the entire pack. One practical approach to improve performance of the energy storage cell stack is to timely perform cells equalization, which is especially essential for a large pack. An optimization...
In order to improve the harmonic reduction ability of the multi-pulse rectifier, this paper proposes a multi-pulse rectifier based on harmonic reduction technology at DC link. The proposed rectifier employs two diode bridges, each followed by a Boost converter. By controlling the inductor current of Boost converter, the input line current of the proposed rectifier can be approximated to sinusoidal...
Fault tolerance (FT) is well studied and practicedin the past decades to enhance reliability of software systems. Although many sophisticated fault tolerance mechanisms have been developed, they are difficult to be applied to a given systemfor the following reasons. Firstly, the comprehensive analysis of the target system is a challenging task. Secondly, it is hard todetermine which fault tolerance...
The technology of Bank-to-Turn is an important development direction of hypersonic glide vehicles' control. But there is a strong coupling between roll channel and yaw channel when the vehicle is in rolling maneuver. In this paper, a dual decoupling fusion control method is presented based on aileron-rudder cross decoupling control and model reference global sliding mode control for the problem of...
Against a low accuracy for people to solve fuzzy assignment problem by using possibilistic programming approach, an improved algorithm based on trapezoidal possibility distribution is given in this paper. Trapezoidal possibility distribution has comparative complex membership function, so we can process actual decision information better and reflect decision maker's subjectivity much better. Then...
Multiplication of large integers is a fundamental operation for public key cryptography. In contemporary public key cryptography, the sizes of integers are typically from more than one hundred bits to even several thousands of bits. Because these sizes exceed the bit widths of all general-purpose processors, these multiplications must be performed with a multiprecision multiplication algorithm which...
In this paper, we propose a CPA-Secure encryption scheme with equality test. Unlike other public key solutions, in our scheme, only the data owner can encrypt the message and get the comparable ciphertext, and only the tester with token who can perform the equality test. Our encryption scheme is based on multiplicative homomorphism of ElGamal Encryption and Non Interactive Zero Knowledge proof of...
The synchronized trajectory tracking control problem of multiple mobile robots under actuator faults is studied in this paper. We take the communication delays into consideration in system design and do not require that the network topology is symmetric. A distributed control design approach is proposed by incorporating the synchronized formation control method and a sufficient condition is obtained...
Due to the structure limitation of navigation message, the channel coding used by the satellite navigation system should have as high a coding gain as possible under short code lengths. At the same time, in order to reduce the cost of the receiver, the channel coding suitable for the navigation system should have the lowest complexity for coding and decoding. A well-designed structured LDPC code can...
In this paper, a novel +45° insulator is proposed. The insulator has a conductivity graded structure in which the high conductivity part performs as a shield to reduce the electric field concentration at anode triple point and along surface. Hence, the surface electrical withstanding strength would be enhanced. Computer aided simulation is performed to investigate the electric field distribution with...
The Intelligent Transportation System (ITS) targets to a coordinated traffic system by applying the advanced wireless communication technologies for road traffic scheduling. Towards an accurate road traffic control, the short-term traffic forecasting which predicts the road traffic at the particular site in a short period is often useful and important. In existing works, Seasonal Autoregressive Integrated...
According to the design scheme of different data acquire terminal, this paper studied Advanced metering infrastructure on-site diagnosis method used for construction of smart grid, and presents the second pulse incremental statistical expanding algorithm based on the pulse input unit and a precision timing source, developed a site diagnosis system of portable mobile, and developed automatic test software...
Flexible accessories is an important part of modern satellite, the elastic vibration is the main factor influencing the control performance of space vehicle, which make it necessary to test the performance of vibration suppression for the control system on the ground. The difficulty of physical simulation is to simulate the space microgravity environment, the length of solar array is large and frequency...
This Empirical mode decomposition (EMD) is a kind of multi-scale transformation theory which is suitable for nonlinear and non-stationary signal processing. It is not necessary to select the basis function in advance, and can adaptively adjust according to the characteristics of the signal itself. Extracting the intrinsic mode function (IMF) is an important process for the applications for empirical...
This paper presents the design method using topology optimization and the fabricating feasibility using Fused Deposition Modeling (FDM) 3D printing technique for Functionally Graded Material (FGM) insulator. The concepts of FGM and topology optimization are primarily introduced. And a topology optimization approach based on COMSOL Multiphisics is proposed. The optimization objective is to uniform...
In order to get polymeric materials with tunable dielectric permittivity, epoxy composites filled with the combination of micro-size alumina and barium titanate particles were prepared. In this paper, firstly appropriate surface modification method for the inorganic fillers employing silane coupling agent (KH550) was experimentally selected. Then, epoxy resin based composites were prepared with BaTiO...
In the process of drying, uneven drying rate will lead to the decline of grain quality, including the increase of crackle ratio, the destruction of the edible quality. In this paper, based on PAGE model the numerical simulation method suitable for circulated rice drying process of constant rate was developed and circulated rice drying process of constant rate was built. The simulation software of...
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