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Leaching of scheelite by adopting the sulfur-phosphorus mixed acid allowed the accompanied rare-earth elements to enter a leaching solution. The leaching solution contained ions that could be coordinated with rare-earth ions, such as phosphotungstic acid anions, sulfate anions and phosphate anions, among others. To efficiently extract rare earths from the leachate, the extraction behavior of rare-earth...
To satisfy the ever-increasing performance demand of Big Data and critical applications the data management needs to offer the flexible schema, high availability, light weight replica, high volume and high scalability features so as to facilitate the transaction. The in memory database (IMDB) eliminates the I/O bottleneck by storing data in main memory. We give a deeper analysis of current main-stream...
The problem of symbol misidentification (SMI) for data-dependent superimposed training (DDST) is considered. The constraint conditions on the discrete Fourier transform matrix are derived and constellation rotation (CR) at the transmitter to avoid the SMI is proposed. Simulation results show that the DDST with CR can eliminate the symbol error floor and yield better detection performance than the...
In order to improve the utilization of network bandwidth in multimedia business, a variety of header compression schemes have been proposed. This paper first introduces the background and feasibility of the header compression technology, and then states the principles of three traditional header compression schemes: VJHC, IPHC and CRTP. Since the three traditional header compression schemes can't...
The Apriori algorithm is a most influential one to excavate association rules. The basic idea of the algorithm is: identify all the frequent itemsets to get association rule. This paper presents the improved Apriori algorithm based on interested items, which mainly construct an ordered interested table and traverse it to excavate frequent itemsets quickly. The paper also by writing c# code achieves...
This paper elaborates the feasibility of allocating the training guarantee fund by the Barycenter model of group decision. Based on the Barycenter model of group decision-making, the model of fund allocation was built. Combined with an actual application, verified the model, we carried out the model in the fund budget management system, provided scientific tool for the allocating of the training guarantee...
With the ever growing number of hosts connected to the Internet, network and information security has become more and more important. Due to the increasing sophistication of attacking techniques and automated attacking tools, it is necessary for large scale information to combine multiple and heterogeneous security mechanisms' collaboration to discover and defend various distributed and coordinated...
Traditional approaches to network management are mostly based on the centralized client/server model. Due to the intrinsic limitations of SNMP-based management paradigms, such as information bottlenecks and lack of flexibility, have encouraged a trend towards distributed management system. The emergence of mobile agent frameworks has led many researchers to examine their applicability to network management...
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