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A Thermal Event in the Ordos Basin:Insights from Illite ^40Ar-^39Ar Dating with regression analysis

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Journal of Earth Science 2018年第3期29卷 629-638页

作者： Longzhang Wang Liyun Wang Ping'an Peng Tongmo Dai Dayong Liu Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education China University of GeosciencesWuhan 430074China State Key Laboratory of Geological Processes and Mineral Resources China University of GeosciencesWuhan 430074China State Key Laboratory of Organic Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China

Four samples from a Permian reservoir in the Ordos Basin of North China were separated into twelve fractions in grain sizes of 〈0.5, 0.5-1 and 1-2 μm. Using the ^40Ar-^39Ar step-heating method, all of the fractions essentially yielded plateau ages ranging from 172.5 to 217.1 Ma. These scattered plateau ages might not have been obtained from pure diagenetic illites but from mixed clay minerals, although the samples were disaggregated using a gentle freeze-thaw cycle to free them of non-clay minerals. A regional thermal event, as suggested by several proxies, led to intensive iHitization as a distinct diagenetic process when the Yanshanian Movement triggered magmatism around the entire North China Block during the Jurassic to Cretaceous. Thermal illites formed during a short time period, whereas detrital illites came from various sources. The scattered plateau ages could have resulted from mixed degassing of thermal and detrital illites. Within one sample, the plateau ages decrease with the diminution of grain sizes, but it is difficult to extrapolate to the detrital-illite-free ages. Because the plateau age is a mixture of ages for thermal and detrital illites, this regression analysis studies the dependence of the plateau ages on the synthetic values of contents and ages of detrital illites instead of on the grain sizes. Comparing the samples to one another, the plateau ages show the same trend among the different grain sizes. Weighted by the contents and ages of detrital illites, linear regression analysis revealed the relationship between the plateau ages and the relative weight proportions. Based on iterated calculations, a thermal event age and a set of weight proportions were derived. The regressed thermal event age is 163.3±1.6 Ma, which coincides with regional thermal activities and links to gas accumulation.

关键词： thermal event ^40Ar-^39Ar dating of fllites linear regression analysis Ordos Basin.

BTP Prediction Model Based on ANN and regression analysis

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BTP Prediction Model Based on ANN and Regression Analysis

2009 Second International Workshop on Knowledge Discovery and Data Mining

作者： Bin Wang Yan Fang Jinfang Sheng Weihua Gui School of Information Science and Engineering Central South University Changsha China Ying Sun Automation Department ChangTian International Engineering CO. LTD.MCC Changsha China

＜正＞In this paper,data mining technology is adopted to find correlations from massive production data to predict Burning Through Point（BTP） of sintering process.A hybrid BTP prediction model is presented which is based on artificial neural network and multi-linear regression error compensation *** this model,the final prediction result is calculated based on both the prediction value from ANN model and the compensation value from linear regression *** with the pure ANN model,the maximal prediction error is reduced from 3.85 meter to 1.3 meter and the prediction errors are kept in the range of±1 meter with the probability of 98.89%.Finally,the prediction values and correlated variables are sent back to L1 system through BTP control model to realize a closed-loop control system.

关键词： data mining BTP closed-loop control ANN linear regression analysis

GROUNDWATER QUALITY AND CONTAMINATION INDEX MAPPING IN CHANGCHUN CITY,CHINA

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Chinese Geographical Science 2004年第1期14卷 63-70页

作者： Hamadoun BOKAR College of Environment and Resources Jilin UniversityChangchun 130026P.R.China

Groundwater in Changchun City, Jilin Province of China tends to be influenced by human activities. Chemical types of groundwater were detected in both shallow and deep groundwater were: HCO3--Ca2+ and HCO3--Ca2+·Mg2+ or HCO3--Mg2+·Ca2+; SO42--Ca2+ and SO42--Ca2+·Mg2+; Cl--Ca2+; and CO32--Na+. The deteriorations of groundwater quality due to the increase of TDS, NO3-+ NO2-(as Nitrogen) and TH contents have been observed from 1991 to 1998. Scatter analyses showed strong positive correlations between Ca2+, Cl-and NO3-ions and weak negative correlations between the depth of water table and Ca2+, SO42-, Cl-and NO3-ions. A mapping of contaminant index based on Chinese standard of groundwater showed that a large proportion of the groundwater in 1998 was deteriorated by human process. Despite their low values of sodium adsorption ratio (SAR), the most of the sampled wells were not suitable for drinking and agriculture purposes due to higher contents of NO3-, NO2-and Mn2+ ions.

关键词： hydrochemistry groundwater quality contaminant index linear regression analysis GIS mapping Changchun City

Effects of Environmental Factors on Stream Macroalgae as Determined by Grey Correlation-regression analysis in a stream system（Xin’an Spring）,North China

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Effects of Environmental Factors on Stream Macroalgae as Det...

中国藻类学会第八次会员大会暨第十六次学术讨论会

作者： HU Bianfang,XIE Shulian School of Life Science,Shanxi University,Taiyuan 030006,China

＜正＞The effects of environmental factors on stream macroalgae were investigated using grey correlation-regression *** were collected from July 2004 to April 2005 from Xin’ an Spring,Shanxi Province,north *** environmental variables were consisted of water temperature,pH,specific conductance,dissolved oxygen,surface current velocity,maximum depth and ***-two species of stream macroalgae were identified in this *** established a linear regression model in which these environmental factors were included as independent variables,and the number of stream macroalgal species was the dependent *** results of analyses with the regression model confirmed that water temperature,current velocity,and specific conductance were the key factors affecting stream macroalgae.

关键词： environmental factors stream macroalgae grey correlation analysis linear regression analysis China

RELATIVE LEVELS OF INDOOR AND OUTDOOR PARTICLE NUMBER CONCENTRATIONS IN A RESIDENTIAL BUILDING IN XI'AN

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China Particuology 2006年第6期4卷 342-345页

作者： Yanming Kang Ke Zhong Shun-Cheng Lee School of Environmental Science and Engineering Donghua University Shanghai 201620 China Research Center of Urban Environmental Technology and Management Department of Civil and Structural Engineering Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong China

The time series of indoor and outdoor particle number concentrations in a naturally ventilated residential building in Xi＇an were tested simultaneously for 7 days in summer. The relationships between indoor and outdoor concentrations were examined and discussed, and linear regression analysis was employed to correlate the indoor and outdoor concentrations. The diurnal cycles of indoor and outdoor particle concentrations of different particle size ranges all showed positive correlations between indoor and outdoor number concentrations, The I/O ratios of number concentrations varied with the increase of particle size in the range of 0.89 （±0.19） to 0.99 （±0.15）.

关键词： indoor and outdoor particle number concentration I/O ratio linear regression analysis

CFD analysis and Optimization of Automobile Radiator based on STAR-CCM+

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International Journal of Plant Engineering and Management 2017年第4期22卷 212-221页

作者： XU Xiao-wen SUN Hou-huan HUA Guang-sheng YIN Zhen-hua School of Mechanical and Power Engineering Nanjing Tech University China National Accreditation Service for Conformity Assessment

This research talks about the radiator cooling system of the automobile engine,the radiator’ s fluidstructure interaction dynamics based on computational fluid dynamics( CFD) STAR-CCM+ software. The linear regression model of coolant determined by MATLAB software was imported into the user-defined field function of the software,using the standard K-Epsilon turbulence model to analyze temperature,pressure and velocity changes of the coolant in the radiator channel. In order to improve the efficiency of the radiator,it is necessary to analyze the structure of two kinds of heat sinks,and get better heat transfer effect.

关键词： computational fluid dynamics(CFD) linear regression analysis radiator STAR-CCM+

analysis of Alkaline Foam to Water Temperature Model

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World Journal of Engineering and Technology 2016年第3期4卷 433-436页

作者： Zhen Xu Lihong Zhao Kai Tan Institution of Mechanical Engineering University of the South of China Hengyang China Institution of Nuclear Six University of the South of China Hengyang China Institution of Nuclear Science and Technology University of the South of China Hengyang China

Factors affecting bath water temperature model include the shape and size of a bath, people’s gesture, volume, individual temperature adaptation as well as body movement in the bath. In addition, the bathroom space, ambient temperature and bath materials will also affect changes of the water temperature to a certain extent. In this paper, the cooling function and linear regression method are used and the MATLAB software is also used to simulate the model of water temperature, alkaline bath foams that obtained can accelerate changes in water temperature.

关键词： Water Temperature Model Cooling Function linear regression analysis

Investigation on Relevance between Test Score and Cultural Background

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Investigation on Relevance between Test Score and Cultural B...

2010 The 2nd International Conference on Industrial Mechatronics and Automation (ICIMA 2010)

作者： Chengcheng Zhang Foreign Language Teaching & Researching Department College of Foreign Languages Hebei University Baoding China Fei Wang Department of Electrical Engineering Science & Technology College North China Electric Power University Baoding China

Cultural background refers to the material culture and spiritual cultural environment which have impact on people’s physical and mental development and character *** are some relationship within college english learning and student’s cultural *** figure out the relevance between college english course test score and cultural background,an investigation about these two factors based on linear regression analysis is presented in this *** regression analysis is introduced and the figures of correlation between test score and cultural background are ploted following the test score records and cultural background *** scatter diagram and linear regression analysis of four classes indicate that the college english course test score tightly related to the cultural background.

关键词： college english course test score cultural background linear regression analysis

The Mechanical Properties Study of Woven Fabrics

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The Mechanical Properties Study of Woven Fabrics

2011 2nd International Conference on Advanced Measurement and Test (AMT 2011)

作者： Yao LIU Zhong-min DENG Yi-ren CHEN Key Laboratory of Green Processing and Functional Textiles of New Textile Materials of Ministry of Education Wuhan Textile University

Now the Mechanical Properties of fabrics is widely studied,but always involve in one kind of fabric or a certain *** order to further understand the fabric tearing strength comprehensively,through a lot of experiments,this article mainly study the single or multiple influences of warp and weft fineness,warp and weft density,warp and weft yarn strength,break elongation of warp and weft yarn,fabric thickness of five fabrics on single stitch tearing strength and trapezoid tearing *** we use SPSS statistical analysis tools to conduct multiple linear regression *** can conclude that warp and weft tightness of fabrics,warp yarn strength,elongation at break of weft yarn have the influence on tearing strength;When trapezoid Angle is changed from 27 degrees to 45 degrees,the influence of warp and weft tightness on it will become bigger,but the influence of warp yarn strength,elongation at break of weft yarn on it will become smaller,and so on.

关键词： mechanical properties single stitch tearing strength trapezoid tearing strength linear regression analysis break elongation