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Articles by Lu Yao
Total Records ( 2 ) for Lu Yao
  Bin Zeng , Lu Yao and Rui Wang
  For energy efficient routing scheme in the wireless sensor networks, it is important to use sub-optimal paths supported by relay nodes to increase the survivability and lifetime of networks. However, through routing algorithms play an important role, they will not be able to make good performance without an appropriate deployment of relays. First, the co-design problem, relay routing problem and relay deployment problem are formulated together with the end to end network energy consumption. Second, an optimal routing Tree algorithm considering network traffic, are proposed in order to significantly reduce the network energy consumption through the efficient utilization of the deployed relay nodes. Third, the relay deployment problem is considered to find the optimal locations for a given number. A traffic-aware relay deployment algorithm is proposed by adopting the network routing and traffic information. Our algorithms has been evaluated through a series of simulations and compared with state-of-the-art approaches. The results show that they lead to significant improvement on the network energy consumption over the existing traffic-unaware strategies.
  Tingting Zhang , Anning Huang , Jinnian Li , Xueqin Liu , Lin Li , Lu Yao , Ying Huang and Wenping Wang
  Enterotoxigenic Staphylococcus aureus is a main cause of Staphylococcal Food Poisoning (SFP). Here, researchers characterized the antimicrobial resistance, distribution and expression of enterotoxin genes of 41 Methicillin-Resistant S. aureus (MRSA) isolated from bovine mastitis milk and SFP cases. Apart from three SFP-acquired isolates which could produce extended-spectrum β-lactamases, all the others carried mecA gene and expressed the penicillin-binding protein 2a. The 92.7% of MRSA isolates tested showed twenty two multi-drug resistant patterns among which SFP-acquired isolates had higher resistant rate and the MIC50/90 values of cefotaxime, amikacin, azithromycin, ciprofloxacin and gentamicin than those of milk-acquired isolates. The 95.1% of MRSA isolates carried at least one Staphylococcal Enterotoxins (SEs) gene and could produce the corresponding classical SEs, the differences in the prevalence of enterotoxigenic MRSA observed between milk-acquired and SFP-acquired isolates were not statistically significant. Six SEs genotypes were found, among which the genotypes sea-seg-sei-seln-selm and sea-seb-sec-seg-sei-seln-selm predominated, respectively in milk-acquired and SFP-acquired isolates.
 
 
 
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