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Correlation analysis between fault frequency and service time of underground fluid instruments

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Geodesy and Geodynamics 2023年第4期14卷 411-418页

作者： Xiao Tian guoying Su The First Monitoring and Application Center China Earthquake AdministrationTianjin 300180China

In this paper, we make a statistical analysis of the fault information of the underground fluid instruments of 12 models in China from January 2021 to May 2022 based on the Pearson correlation coefficient, and compare the fault statistics of the meteorological three-element instruments of 3 models during the study period. The results show that:(1) The numbers of faults of the underground fluid instruments of 12models with different service times are basically positively correlated with the numbers of the corresponding instruments, with good consistency. Moreover, the automatic observation instruments(8models) with more than 30 units are significantly correlated at a 0.05 significance level(95% confidence level). Even at a 0.01 significance level(99% confidence level), there are 7 models(7/8) with significant correlation.(2) The positive and negative correlations between the monthly average number of faults and the corresponding service times of the underground fluid instruments of 12 models with different service times are random, and there are 9 models(75%) with no significant correlation at a 0.05 significance level(95% confidence level), while 12 models(100%) with no significant correlation at a 0.01significance level(99% confidence level).(3) The monthly average numbers of faults of the underground fluid instruments of 12 models are basically 0.02-0.05 times/(unit·month), and the overall fault frequency is low.(4) The fault statistics results of the meteorological three-element instruments of 3 models are consistent with the characteristics of the underground fluid instruments of 12 models. In general,there is no significant correlation between the fault frequency and the service time of underground fluid instruments.(5) The results of this paper demonstrate that the service time of underground fluid instruments cannot be taken as the main reason for whether to update the instruments. Similarly, the fault frequency of the instruments cannot be taken as the main

关键词： Underground fluid instruments Fault frequency Service time Correlation analysis

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青少年慢性疼痛与学习压力的相关性分析

中华医学杂志 2014年第48期94卷 3831-3835页

作者：赵庆华张永兴邓国英蒋文斌张琳娜狄黎卿栗扬阳杜小宇吴欣菀车前子陈柯宇上海交通大学附属第一人民医院骨科 200080

目的分析高中生头痛、腹痛、颈肩痛和腰背痛等慢性疼痛发病情况及其与青少年学习压力之间的关系.方法 2011至2012学年度第二学期,就相关问题,随机问卷调查上海市全日制普通高中3 000名学生,对结果进行多因素Logistic回归模型分析.结果... 详细信息

目的分析高中生头痛、腹痛、颈肩痛和腰背痛等慢性疼痛发病情况及其与青少年学习压力之间的关系.方法 2011至2012学年度第二学期,就相关问题,随机问卷调查上海市全日制普通高中3 000名学生,对结果进行多因素Logistic回归模型分析.结果完成问卷的学生2 849名,重测信度在0.69 ～ 0.81之间,头痛、腹痛、颈肩痛和腰背痛的整体发病率分别为30.3％、20.9％、32.8％和41.1％,女生均高于男生（头痛为35.00％比24.60％,腹痛为21.50％比18.50％,颈肩痛为44.10％比36.80％,腰背痛为35.40％比29.00％）,差异有统计学意义（P＜0.05）;而且普遍存在着学习负担重、压力大、睡眠不足等现象,与4种慢性疼痛密切相关.结论慢性疼痛为青少年常见疾病,女生高于男生,与学习压力密切相关.

关键词：青少年紧张性头痛腹痛背痛肩痛学习压力

Model of water-sediment regulation in Yellow River and its effect

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Science China(Technological Sciences) 2011年第4期54卷 924-930页

作者： LI guoying SHENG LianXi 1 Yellow River Conservancy Commission Zhengzhou 450003China Northeast Normal University Changchun 130024China

Water-sediment regulation of the Yellow River is to regulate and control the flow and sediment transport relationship of the lower reaches through reservoirs on the main streams and tributaries to create balance between water and sediment so that sediment transport capacity of the downstream channels can be maximized,shrinking of channels be contained,and medium flood channel be restored and *** years' research by the Yellow River Conservancy Commission(YRCC) reveals the water and sediment transport relationship that will prevent sedimentation at the downstream river *** on this relationship and coming sediment and water conditions in the Yellow River basin,the YRCC,with maximized use of reservoirs on the main streams and tributaries,has developed three models of water-sediment regulation:single Xiaolangdi Reservoir-dominated regulation,space scale water-sediment match,and mainstream reservoirs joint *** water-sediment regulations based on these three models have resulted in an average drop of 1.5 m in the main channel of the downstream 800 km river and an increase of carrying capacity from 1800 to 4000 m3/***,the wetland ecosystems of estuarine delta has also been improved and restored significantly.

关键词： water-sediment regulation Yellow River effect

Testing for the maximum cell probabilities in multinomial distributions

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Science China Mathematics 2005年第7期48卷 972-985页

作者： XIONG Shifeng LI guoying Academy of Mathematics and System Sciences Chinese Academy of Sciences Beijing 100080 China Academy of Mathematics and System Sciences Chinese Academy of Sciences Beijing 100080 China

This paper investigates one-sided hypotheses testing for p, the largest cell probability of multinomial distribution. A small sample test of Ethier (1982) is extended to the general cases. Based on an estimator of p, a kind of large sample tests is proposed. The asymptotic power of the above tests under local alternatives is derived. An example is presented at the end of this paper.

关键词： multinomial distribution, hypothesis testing, maximum multinomial probability, order statistics,asymptotic distribution, local alternatives.

针对本科生骨牵引综合技能训练的双Debriefer混合模拟教学

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中华医学教育探索杂志 2021年第8期20卷 941-944页

作者：林健周栩王秋根黄建华伍凯夏丹阳邓国英上海交通大学附属上海市第一人民医院创伤中心 201620 上海交通大学医学院第一人民医院临床医学院 200080

目的开发一种用于本科生骨牵引临床技能训练的双Debriefer混合模拟教学课程,并评价其教学效果。方法本研究采用交叉对照研究法。2018年6月至2019年6月,28名临床医学专业本科实习生被随机分为两组,分别以模拟教学和传统教学组织教学,1周... 详细信息

目的开发一种用于本科生骨牵引临床技能训练的双Debriefer混合模拟教学课程,并评价其教学效果。方法本研究采用交叉对照研究法。2018年6月至2019年6月,28名临床医学专业本科实习生被随机分为两组,分别以模拟教学和传统教学组织教学,1周后两组的教学方法进行交叉。用技能评分表评价学生在接受不同教学后的骨牵引临床技能水平。采用SPSS 23.0软件进行统计分析。结果在实习第1周末,实验组学生的技能评分高于对照组,平均分分别为85.07分、67.92分。在实习第2周末,实验组技能评分无明显变化;而对照组评分提升,并与实验组相比,差异无统计学意义。结论双Debriefer混合模拟教学为本科生学习骨牵引临床技能提供了新的可靠方法,能有效帮助学生提高技能,减少操作错误,保障患者安全。

关键词：模拟教学临床技能训练骨牵引

Performance characterization of ionic-hydrogel based strain sensors

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Science China(Technological Sciences) 2020年第6期63卷 923-930页

作者： XU HaiPeng SHEN ZeQun GU guoying Robotics Institute School of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Mechanical System and Vibration Shanghai Jiao Tong UniversityShanghai 200240China

Ionic hydrogels,owing to the advantages of stretchability,conductivity and transparency,have attracted more attention for developing new soft sensors and artificial *** works on ionic-hydrogel based sensors mostly focus on material synthesis,structure design and functional integration,while few studies investigate the characterization of their sensing *** this paper,we present a method to characterize the performance(e.g.,sensitivity,linearity and repeatability)of a kind of ionic-hydrogel based strain sensors by varying the testing frequencies and the sensors’geometry(e.g.,length-width(L/W)ratio).To this end,we first develop an experimental testing platform and fabricate a series of strain sensors made of the polyacrylamide(PAAm)hydrogel containing ionic conductive *** establish an equivalent electrical model to represent the ionic-hydrogel based strain sensors,indicating the influence of the testing frequencies and L/W ratio of the ionic hydrogels on their sensing *** theoretical predictions are in agreement with results obtained through experimental *** further demonstrate that(1)the sensitivity of the strain sensors,characterized by the gauge factor(GF),increases with the rise of testing frequencies but tends to be stable over the frequency of 5 kHz;(2)the sensitivity GF has a nonlinear relation with the L/W ratio of the strain sensors,but with a certain maximum value under the same testing frequency when the L/W ratio equals to *** verify the above experimental observations with two commonly used electrolytes,including lithium chloride and sodium *** the optimum testing frequency and L/W ratio,we finally conduct various experiments to demonstrate the low hysteresis and good repeatability of our ionic-hydrogel based strain *** work provides an approach to characterize the performance of the ionic-hydrogel based strain sensors,which may be an important step forward in further applicatio

关键词： ionic hydrogels sensor characterization large-strain sensor stretchable electronics

Verification of Glyphosate Resistance, Lepidopteran Resistance and Wide Compatibility of Male Sterile Line E1C4008S in Rice

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Rice science 2020年第3期27卷 215-226页

作者： ZENG Qiang deng Lihua HU Wenbin HE Xingjian MENG Qiucheng YU Jianghui LI Jinjiang WENG Lushui XIAO guoying Key Laboratory of Agro-ecological Processes in Subtropical Region Institute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125China University of Chinese Academy of Sciences Beijing 100049China Hunan Rice Research Institute Changsha 410125China The Sericultural Research Institute of Hunan Province Changsha 410125China The Innovation Academy for Seed Design Chinese Academy of SciencesBeijing 100101China

Weeds and insect pests are two important biotic stresses resulting in yield loss in rice, and wide compatibility is the essential characteristic of breeding inter-subspecific hybrid rice. This study focused on glyphosate resistance, lepidopteran resistance and wide compatibility as well as identification of molecular and some agronomic characteristics of transgenic male sterile line E1 C4008 S. The results indicated that glyphosate resistance gene Epsps^# and lepidopteran resistance gene Cry1 ca^# were transferred into japonica wide compatibility male sterile line 4008 S by Agrobacterium-mediated method, and four independent transformation events named E1 C4008 S-1, E1 C4008 S-2, E1 C4008 S-3 and E1 C4008 S-4 were obtained, in which E1 C4008 S-3 and E1 C4008 S-4 were of single copy insertion. The EPSPS protein contents of E1 C4008 S-3 and E1 C4008 S-4 in different organs were significantly different both in descending order of leaf > stem > root, and ranged from 300.58 to 1410.69 μg/g at the tillering stage. The glyphosate tolerable concentration(dosage) of E1 C4008 S-3 and E1 C4008 S-4 reached at least 16 g/L(54.42 kg/hm^2), and the seeds of E1 C4008 S-4 can germinate normally on the medium containing 1 g/L glyphosate. The CRY1 C protein contents of E1 C4008 S-3 and E1 C4008 S-4 in different organs were significantly different both in descending order of leaf > stem > root, and ranged from 0.62 to 2.43 μg/g at the tillering stage. The larvae mortalities of rice leaf rollers fed on leaves of E1 C4008 S-3 and E1 C4008 S-4 for 5 d were 95.35% and 97.77%, respectively, while the average mortalities of silkworms fed with protein extracts from leaves of E1 C4008 S-3 and E1 C4008 S-4 reached 94.55% and 83.64%, respectively. The results suggested that wide compatibility and evaluated agronomic traits of E1 C4008 S-4 were not significantly changed by insertion of the exogenous genes. Overall, a novel male sterile germplasm with glyphosate resistance, lepidopteran resistance

关键词： rice glyphosate resistance lepidopteran resistance wide compatibility male sterile line bioengineered crop

GENERALIZED p-VALUES FOR TESTING REGRESSION COEFFICIENTS IN PARTIALLY LINEAR MODELS

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Journal of Systems Science & Complexity 2010年第6期23卷 1118-1132页

作者： Huimin HU Xingzhong XU guoying LI School of Statistics and Mathematics Shandong University of Finance Jinan 250014 China. Department of Mathematics Beijing Institute of Technology Beijing 100081 China. Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100190 China.

The one-sided and two-sided hypotheses about the parametric component in partially linear model are considered in this paper. Generalized p-values are proposed based on fiducial method for testing the two hypotheses at the presence of nonparametric nuisance parameter. Note that the nonparametric component can be approximated by a linear combination of some known functions, thus, the partially linear model can be approximated by a linear model. Thereby, generalized p-values for a linear model are studied first, and then the results are extended to the situation of partially linear model. Small sample frequency properties are analyzed theoretically. Meanwhile, simulations are conducted to assess the finite sample performance of the tests based on the proposed p-values.

关键词： Fiducial inference frequency property generalized p-value hypothesis testing partially linear model.

Simultaneous heterotrophic nitrification and aerobic denitrification at high initial phenol concentration by isolated bacterium Diaphorobacter sp. PD-7

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Chinese Journal of Chemical Engineering 2015年第5期23卷 835-841页

作者： Qilong Ge Xiuping Yue guoying Wang School of Environmental Science and Engineering Taiyuan University of Technology

A strain capable of phenol degradation, hetemtrophic nitrification and aerobic denitrification was isolated from activated sludge of coking-plant wastewater ponds under aerobic condition. Based on its morphology, physiology, biochemical analysis and phylogenetic characteristics, the isolate was identified as Diaphorobacter sp. PD-7. Biodegradation tests of phenol showed that the maximum phenol degradation occurred at the late phase of exponential growth stages, with 1400 mg·L^-1 phenol completely degraded within 85 h. Diaphorobacter sp. PD-7 accumulated a vast quantity of phenol hydroxylase in this physiological phase, ensuring that the cells quickly utilize phenol as a sole carbon and energy source. The kinetic behavior ofDiaphorobacter sp. PD-7 in batch cultures was investigated over a wide range of initial phenol concentrations （0-1400mg·L^-1） by using the Haldane model, which adequately describes the dynamic behavior of phenol biodegradation by strain Diaphombacter sp. PD-7. At initial phenol concentration of 1400mg· L^-l, batch experiments （0.25 L flask） of nitrogen removal under aerobic condition gave almost entirely removal of 120.69mg· L^- 1 ammonium nitrogen within 75 h, while nitrate nitrogen removal reached 91% within 65 h. Moreover, hydroxylamine oxidase, periplasmic nitrate reductase and nitrite reductase were successfully expressed in the isolate.

关键词： Diaphorobacter sp.Phenol biodegradation Kinetics Heterotrophic nitrification Aerobic denitrification Enzyme activity