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Manganese (Mn) extraction from iron-rich pyrolusite ore with cheap sulphur dioxide is considered to be the most promising method with advantages of rapid leaching rate and high leaching efficiency. Nevertheless, co-dissolution of iron (Fe) with manganese has limited the development of its commercial practice. In this work, the separation kinetics and mechanism were investigated during the leaching...
The problem of matrix completion has been gaining increasing attention among the data mining, knowledge discovery and related research communities. Factorization is one approach to solve the problem. There are good factorization methods, such as Singular value decomposition (SVD) and Non-negative matrix factorization (NMF) which could get a rather satisfied results when dealing with real-valued data...
Cognitive diagnosis models (CDMs) are of growing interest in test development and in the measurement of human performance. The DINA (deterministic input, noisy, and gate) model has been widely used in cognitive diagnosis tests and in the process of test development. Central to many such models, the well-known Q-matrix [1], which specifies the item-attribute relationships and two noise parameters in...
In this paper, a new outer loop power control algorithm based on fuzzy theory is proposed. The value corresponding with the difference of BLER and BLERtar, processed by fuzzy membership function, is dealt with fuzzy theory principle to calculate the adjustment step-size of SIRtar for the inner loop power control. The algorithm with the feature of simple operation and fast control can obtain optimal...
Trust relationship among multiple domains is the basis for inter-domain fast authentication. This paper proposes a fast authentication method combining inter-domain trust relationship for wireless mobile IPv6 networks. In order to implement inter-domain trust relationship, a dynamic trust maintenance mechanism is designed. Based on Combined Public Key (CPK) algorithm, a new signature and verification...
We divide the predictive FMIPV6 handover procedure into 5 phases. Among these phases, the link layer prediction, the predictive tunneling and sender preparation phases are mainly concerned, the latencies and the reasons for the latencies in the 3 phases are analyzed in an IEEE 802.11 test-bed. Based on the analysis, a cross-layer fast handover management mechanism is proposed and proved to be efficient...
In MIPv6, the home agent (HA) is the key entity to ensure a mobile nodepsilas (MN) reachability. A single HA on the home link will become a performance bottleneck. In order to enhance service availability and improve system performance, it is necessary to configure multiple HAs on the home link and efficiently balance load among these HAs. This paper proposes a dynamic multiple HA load balancing mechanism...
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