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Many lakes in China have suffered from the eutrophication every year. Chemical oxygen demand (CODMn) is one of the main indexes that reflect lake eutrophication, so accurate simulation and forecast of CODMn can provide a scientific basis for decision-making of eutrophication control. In this paper, a GM(1,1)-Markov model is applied to forecast CODMn in Dianchi Lake, which is a seriously eutrophicated...
An example-based approach for facial portrait style learning is proposed. By learning a training set with the same style, this method can generate new portraitures which are similar to this style. To obtain facial features with high quality, there are two key elements in this paper: Using an Inhomogeneous Markov Random Field Model (MRF) and a nonparametric sampling scheme to learn the statistical...
IEEE 802.16 is a promising technology in broadband wireless access area. In this paper, a novel performance analysis model is provided focusing on the VoIP services in TDD OFDMA-based IEEE 802.16 system. Based on the analysis results, a united packet aggregation scheme for both uplink and downlink is provided. The simulation results show that the packet aggregation in MAC layer not only improves the...
IEEE 802.16 based WiMAX is fast emerging as a representative last-mile broadband wireless access technology. In this paper, a novel uplink performance analysis model focusing on the VoIP services in TDD-OFDMA based WiMAX network is proposed. Based on the analysis model, the effect of scheduling and resource allocation on the VoIP performance is discussed. The numerical results show that the packet...
IEEE 802.16 is a promising technology in broadband wireless access area. In multiservice IEEE 802.16 network, connection admission control (CAC) plays a critical role for resource management and QoS guarantee. In this paper, a statistical CAC mechanism is proposed for IEEE 802.16 network. In order to avoid the QoS degradation, the proposed CAC mechanism considers the traffic variability and overflow...
In this paper we present a pioneering step in designing n-gram based part of speech tagger for the Urdu language. In the last few years part of speech tagging work has been done in the area of supposed English, South Asian and European languages. In this paper our focus of attention is on the disambiguation problem (to assign the accurate tag for every word of a set of possible tags). Our approach...
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