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When two-phase earthing fault occurs in different sections of a feeder in a distribution system, part of section switches may have two phase fault current flowing through and part of section switches may have one phase fault current flowing through. So, fault current characteristic of this kind of fault is different from that of interphase short circuit fault. Then the traditional matrix algorithm...
We consider the stabilization problem of a switched delay system using sampled and quantized measurements of its state which result in finite data-rate communication. We assume that the switching is subject to the slow-switching. Each individual subsystem is assumed to be stabilizable. We derive a relationship between the number of values taken by the quantizer and the transition matrix of each individual...
Non-repudiation service is widely employed in information exchange and online transaction. It requires that its participants are unable to deny their involvement in specific protocol. At the same time, the service should keep fairness, which means that no one could take any advantages over the other one. Researchers have introduced a trusted third party (TTP) to realize these demands. Protocols are...
University novice teachers are generally lack of teaching experience and skills when starting teacher development. In this context, this research aims to explore specific programs and methods to enhance university novice teachers' teaching capability through school-based training. Based on the teachers' knowledge theory, we construct the training target and content system to design the activities...
The perpendicular maneuver under water of submarines is a complex multivariable system with coupling. the depth and pitch control system of submarine is difficult to design for the coupling relationship between the bow elevator and stern elevator. the submarine nonlinear model on the vertical is simplified according to the simulation needs. the bow rudder auto disturbance rejection controller (ADRC)...
In this paper, we propose an algorithm for mining high coherent utility fuzzy itemsets (HCUFI) from quantitative transactions with the properties of propositional logic. It first transforms quantitative transactions into fuzzy sets. Then, utility of each fuzzy itemsets is then calculated according to the given external utility table. If the value is large than or equals to the minimum utility ratio,...
Peripheral facial paralysis(PFP), a commonly seen disease in clinic, could occur at any age and has seriously threatened the health of human beings. Looking for a safer and more effective method to control the disease is one of the problems faced to modern medicine. By analyzing the advantages and the existing problems on acupuncture and moxibustion for the treatment of PFP, the relationship between...
This paper proposes a novel technique to analyze the infrared vein patterns in the back of the hand for biometric purposes. The line-patterns are retrieved in a rotation and translation invariant manner to tackle broken line problem. A set of pair-wise angle relationships among lines are extracted to present the local structure of line pattern. In order to keep positional information as well, dynamic...
The class imbalance problem is of great importance to network intrusion detection data. Previous studies on feature selection always evaluate the performance of feature selection process according to the model performance and the size of selected feature subset, which neglect the stability of feature selection. We investigate the problem of the stability of feature selection and study in detail the...
Isolation and purification of anthocyanins from mulberry by column chromatography were made, macroporous resins D101 was employed to purify the anthocyanin extracts from mulberry and Sephadex LH-20 was to further separate the anthocyanins in order to obtain more purified or individual anthocyanin. HPLC-ESI/MS analysis was used to identify the anthocyanins in mulberry. The results indicated that there...
Aqueous two-phase extraction (ATPE) was employed to purify resveratrol from peanut vine. The aqueous two-phase system (ATPS) composed of alcohol and inorganic salt was investigated in details, including the effects of phase composition, concentration of the organic solvent and inorganic salt, temperature and extraction time. The optimal differential partitioning of resveratrol was achieved in the...
This paper research adopted the item response theory and studied the aspects such as the generation of random numbers of the students' ability and the method of identifying and selecting examination questions from the item bank. This paper put forward to the basic principle of paper intelligent-production system, the implementation process, test of fit and so on. Meanwhile the implementation process...
Our integrated college campus information system based on service-oriented architecture (SOA) technology can provide object-oriented half integrated services (OOHIS). It can automatically select corresponding components from system component library in response to different service objectives to build a general-purpose major integration service. Via timely building of system component library, the...
Based on the type analysis of manufacturing network alliance, this paper proposes that the manufacturing enterprise network alliance has a reasonable radius for cooperation production, and this is quite different from other kinds of alliance or mixed enterprise network alliance. When the reasonable radius is beyond the threshold, the partners' contribution to the alliance cooperation production will...
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