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A fundamental problem in P2P systems is content-based full-text search. Traditional approaches have either been centralized or use flooding to ensure accuracy of the results returned. In this paper, we present the design of a distributed P2P system (S-Peer) that supports semantics-based content searches of relevant documents. S-Peer nodes with semantically similar content are grouped into one semantic...
In view of the dynamic and static contradiction of disturbance observation, a new disturbance observation based on curve slope is introduced. The characteristic of photovoltaic cells is showed and judgment standard of maximum power point is risen. Comparing the disturbance observation based on based on the P-V rate of curve, and conventional observation disturbance dynamic, static and efficiency,...
The geoscience laser altimeter system (GLAS) on the ice cloud and land elevation satellite spacecraft provided a large amount of data on the topography of polar ice area. It is possible to create high resolution digital elevation models (DEMs) from this data by using data interpolation techniques. Five interpolation algorithms were picked to be tested on GLAS data by employing the Generic Mapping...
Certificate-based encryption (CBE) is a new asymmetric encryption paradigm which combines public-key encryption (PKE) and identity based encryption (IBE) while preserving their features. CBE provides an efficient implicit certificate mechanism and allows a periodical update of certificate status while eliminating third-party queries for the certificate status. In addition, it also solves the key escrow...
IEEE 802.11 DCF exhibits poor performance as the number of nodes increases in a wireless LAN due to high collision probability on each transmission. In this paper, based on the optimal constant backoff (OCB) window scheme which fixes the backoff window at every backoff stage, a virtual collision solution (VCS) scheme is proposed to reduce the collision probability and to enhance the throughput performance...
A novel evolution from TDM-PON to WDM-PON based on DPSK/NRZ orthogonal modulation is proposed. No change for ONU of the existing TDM-PON is required. The good performance and feasibility of the method after a 20-km transmission is experimentally demonstrated.
In this paper, aimed at the problem of detecting closed frequent subgraphs in biological networks, an improved FP-growth algorithm MaxFP is presented, which is based on the simplification model appropriate to biological networks. The defects of the algorithm based on item-set mining are analyzed when it is applied to biological networks, and which is overcome in MaxFP. In addition, MaxFP also takes...
The entrepreneur usually negotiates with many participants about the same problem at the same time, but many Negotiation Support System (NSS) nowadays only stay with two participants, and couldn’t give a better support to the entrepreneur. One-to-many NSS can meet the demands of negotiators and their partners, and has a wide theoretical use and application value. Support to the one-to-many negotiation...
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