نتایج جستجو برای: arma processes

تعداد نتایج: 530543  

2012
Hongkui Li Ranran Li Yanlei Zhao

With the increase of wind power as a renewable energy source in many countries, wind speed forecasting has become more and more important to the planning of wind speed plants, the scheduling of dispatchable generation and tariffs in the day-ahead electricity market, and the operation of power systems. However, the uncertainty of wind speed makes troubles in them. For this reason, a wind speed f...

Journal: :Antimicrobial agents and chemotherapy 2009
Qiong Wu Yibo Zhang Lizhong Han Jingyong Sun Yuxing Ni

High-level resistance to aminoglycosides produced by 16S rRNA methylases in Enterobacteriaceae isolates was investigated. The prevalences of armA in Escherichia coli, Klebsiella pneumoniae, and Enterobacter cloacae were 0.6%, 3.0%, and 10%, respectively. rmtB was more prevalent than armA. Pulsed-field gel electrophoresis patterns indicated that armA and rmtB have spread horizontally and clonally.

Journal: :Communications in Statistics - Simulation and Computation 2008
Abdelhakim Aknouche Hacène Belbachir Fayçal Hamdi

An analytically simple and tractable formula for the start-up autocovariances of periodic ARMA (P ARMA) models is provided.

Journal: :The Journal of antimicrobial chemotherapy 2010
Xiang-Dang Du He-Bing Liu Cong-Ming Wu Xin-Sheng Li Xing-Yuan Cao Bao-An Cui Su-Mei Zhang Gong-Zheng Hu Jian-Zhong Shen

Sir, Methylation of 16S ribosomal RNA (rRNA) mediated by 16S rRNA methylase, which confers high-level aminoglycoside resistance (MICs .1024 mg/L) in Enterobacteriaceae, has recently emerged as a major medical problem worldwide. Until now, seven plasmid-encoded 16S rRNA methylases, ArmA, RmtA, RmtB, RmtC, RmtD, RmtE and NpmA, have been reported in various clinical Gram-negative isolates in multi...

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