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Adaptive Local Outlier Probability for Dynamic Process Monitoring 被引量:2
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作者 马玉鑫 侍洪波 王梦灵 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2014年第7期820-827,共8页
Complex industrial processes often have multiple operating modes and present time-varying behavior. The data in one mode may follow specific Gaussian or non-Gaussian distributions. In this paper, a numerically efficie... Complex industrial processes often have multiple operating modes and present time-varying behavior. The data in one mode may follow specific Gaussian or non-Gaussian distributions. In this paper, a numerically efficient movingwindow local outlier probability algorithm is proposed, lies key feature is the capability to handle complex data distributions and incursive operating condition changes including slow dynamic variations and instant mode shifts. First, a two-step adaption approach is introduced and some designed updating rules are applied to keep the monitoring model up-to-date. Then, a semi-supervised monitoring strategy is developed with an updating switch rule to deal with mode changes. Based on local probability models, the algorithm has a superior ability in detecting faulty conditions and fast adapting to slow variations and new operating modes. Finally, the utility of the proposed method is demonstrated with a numerical example and a non-isothermal continuous stirred tank reactor. 展开更多
关键词 TIME-VARYING Complex data distribution Local outlier probability MULTI-MODE Fault detection
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Quantum Chemistry Based Computational Study on the Conformational Population of a Neodymium Neodecanoate Complex 被引量:2
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作者 项曙光 王继叶 孙晓岩 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2016年第6期833-838,共6页
The title complex is widely used as an efficient key component of Ziegler-Natta catalyst for stereospecific polymerization of dienes to produce synthetic rubbers. However, the quantitative structure-activity relations... The title complex is widely used as an efficient key component of Ziegler-Natta catalyst for stereospecific polymerization of dienes to produce synthetic rubbers. However, the quantitative structure-activity relationship(QSAR) of this kind of complexes is still not clear mainly due to the difficulties to obtain their geometric molecular structures through laboratory experiments. An alternative solution is the quantum chemistry calculation in which the comformational population shall be determined. In this study, ten conformers of the title complex were obtained with the function of molecular dynamics conformational search in Gabedit 2.4.8, and their geometry optimization and thermodynamics calculation were made with a Sparkle/PM7 approach in MOPAC 2012. Their Gibbs free energies at 1 atm. and 298.15 K were calculated. Population of the conformers was further calculated out according to the theory of Boltzmann distribution, indicating that one of the ten conformers has a dominant population of 77.13%. 展开更多
关键词 conformational population neodymium neodecanoate complex quantum chemistry computation Boltzmann distribution
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Complex Seismic Focus Structure and Earthquake-Triggered Landslide Distribution:Analysis of the 2014 Ludian M_w6.1 Earthquake in Yunnan 被引量:3
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作者 CHEN Xiaoli LIU Chunguo 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2017年第2期733-734,共2页
Objective The 2014 Ludian Mw6.1 earthquake in Yunnan occurred in a mountainous area with complex tectonics and topography, which caused serious damage as well as co-seismic landslides of an unusual large scale. Becau... Objective The 2014 Ludian Mw6.1 earthquake in Yunnan occurred in a mountainous area with complex tectonics and topography, which caused serious damage as well as co-seismic landslides of an unusual large scale. Because the suspected seismogenic faults on the surface, distribution of aftershocks and focal mechanism solutions are not consistent, it remains difficult to determine what is the real causal fault or seismogenic structure for this event. Actually, it may imply the complicity of the seismic source at depth. In addition, the distribution of the co- seismic landslides also exhibits some diffusion that is different from general eases, likely associated with the seismic focus structure. 展开更多
关键词 Complex Seismic Focus Structure and Earthquake-Triggered Landslide Distribution:Analysis of the 2014 Ludian M_w6.1 Earthquake in Yunnan
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Classification and counting on multi-continued fractions and its application to multi-sequences
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作者 DAI ZongDuo FENG XiuTao 《Science in China(Series F)》 2007年第3期351-358,共8页
In the light of multi-continued fraction theories, we make a classification and counting for multi-strict continued fractions, which are corresponding to multi-sequences of multiplicity m and length n. Based on the ab... In the light of multi-continued fraction theories, we make a classification and counting for multi-strict continued fractions, which are corresponding to multi-sequences of multiplicity m and length n. Based on the above counting, we develop an iterative formula for computing fast the linear complexity distribution of multi-sequences. As an application, we obtain the linear complexity distributions and expectations of multi-sequences of any given length n and multiplicity m less than 12 by a personal computer. But only results of m=3 and 4 are given in this paper. 展开更多
关键词 multi-strict continued fractions multi-sequences linear complexity distribution
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On correction of model of stabilization of distribution of concentration of radiation defects in a multilayer structure with account experiment data
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作者 E.L.Pankratov 《Journal of Semiconductors》 EI CAS CSCD 2018年第5期6-15,共10页
We introduce a model of redistribution of point radiation defects, their interaction between themselves and redistribution of their simplest complexes(divacancies and diinterstitials) in a multilayer structure. The ... We introduce a model of redistribution of point radiation defects, their interaction between themselves and redistribution of their simplest complexes(divacancies and diinterstitials) in a multilayer structure. The model gives a possibility to describe qualitatively nonmonotonicity of distributions of concentrations of radiation defects on interfaces between layers of the multilayer structure. The nonmonotonicity was recently found experimentally.To take into account the nonmonotonicity we modify recently used in literature model for analysis of distribution of concentration of radiation defects. To analyze the model we used an approach of solution of boundary problems,which could be used without crosslinking of solutions on interfaces between layers of the considered multilayer structures. 展开更多
关键词 radiation defects nonmonotonicity of distributions of concentrations complex
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Super-resolution microscopy reveals the distribution of targeted molecules in the complex matrix
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《Science Foundation in China》 CAS 2016年第4期25-25,共1页
With the support by the National Natural Science Foundation of China and the Chinese Academy of Sciences,the research team led by Prof.Li Junbai(李峻柏)at the CAS Key Lab of Colloid,Interface and Thermodynamics,Instit... With the support by the National Natural Science Foundation of China and the Chinese Academy of Sciences,the research team led by Prof.Li Junbai(李峻柏)at the CAS Key Lab of Colloid,Interface and Thermodynamics,Institute of Chemistry,Chinese Academy of Sciences,revealed the distribution of proteins in the transformation of inorganic/protein hybrid crystals by super-resolution microscopy,which 展开更多
关键词 HIGH Super-resolution microscopy reveals the distribution of targeted molecules in the complex matrix
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