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THE indices OF CONVERGENCE FOR REDUCIBLE BOOLEAN MATRICES

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Chinese Science Bulletin 1990年第10期35卷 875-876页

作者：邵嘉裕 Tongji University Shanghai 200092 PRC

In the study on the indices of convergence of primitive and irreducible Boolean matrices, many interesting results have been obtained, but up to now, very few works are seen for reducible Boolean matrices. Indeed the ... 详细信息

关键词： irreducible matrices Boolean nontrivial primitive indices holds 了派

Changes in sea ice kinematics in the Arctic outflow region and their associations with Arctic Northeast Passage accessibility

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Acta Oceanologica Sinica 2019年第8期38卷 101-110页

作者： Dawei Gui Xiaoping Pang Ruibo Lei Xi Zhao Jia Wang Chinese Antarctic Center of Surveying and Mapping Wuhan University Wuhan 430079 China MNR Key Laboratory for Polar Science Polar Research Institute of China Shanghai 200136 China National Oceanic and Atmospheric Administration Great Lakes Environmental Research Laboratory Ann Arbor 48108-9719 USA

Amplification of climate warming in the Arctic is causing a dramatic retreat of sea ice, which means the Arctic sea routes are becoming increasingly accessible. This study used a satellite-derived sea ice motion product to quantify the kinematic features of sea ice in the Arctic outflow region which specially referred to the Fram Strait and to the north of the Northeast Passage(NEP). An observed trend of increased southward sea ice displacement from the central Arctic to the Fram Strait indicated enhancement of the Transpolar Drift Stream(TDS). In the regions to the north of the NEP, the long-term trend of northward sea ice speed in the Kara sector was +0.04 cm/s per year in spring. A significant statistical relationship was found between the NEP open period and the northward speed of the sea ice to the north of the NEP. The offshore advection of sea ice could account for the opening of sea routes by 33% and 15% in the Kara and Laptev sectors, respectively. The difference in sea level pressure across the TDS,i.e., the Central Arctic Index(CAI), presented more significant correlation than for the Arctic atmospheric Dipole Anomaly index with the open period of the NEP, and the CAI could explain the southward displacement of sea ice toward the Fram Strait by more than 45%. The impact from the summer positive CAI reinforces the thinning and mechanical weakening of the sea ice in the NEP region, which improves the navigability of the NEP.

关键词： sea ice Arctic Northeast Passage Transpolar Drift Stream atmospheric circulation indices

Retraction Note to: Effects of dietary glycerol monolaurate on productive performance, egg quality, serum biochemical indices, and intestinal morphology of laying hens

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2020年第4期21卷 342-342页

作者： Min-jie ZHAO Hai-ying CAI Meng-yun LIU Ling-li DENG Yang LI Hui ZHANG Feng-qin FENG College of Biosystems Engineering and Food Science National Engineering Laboratory of Intelligent Food Technology and EquipmentKey Laboratory for Agro-Products Postharvest Handling of Ministry of AgricultureKey Laboratory for Agro-Products Nutritional Evaluation of Ministry of AgricultureZhejiang Key Laboratory for Agro-Food ProcessingZhejiang UniversityHangzhou 310058China Zhejiang Key Lab for Chem&Bio Processing Technology of Farm Product Zhejiang University of Science and TechnologyHangzhou 310023China

Retraction Note to: J Zhejiang Univ-Sci B(Biomed & Biotechnol) 2019 20(11):877-890 https://***/10.1631/jzus.B1800530The authors have retracted this article(Zhao et al., 2019) due to significant overlap with a previously published Chinese language article(Liu et al., 2017), including overlap in Table 1, Table 2, Table 3, Table 6, Fig. 4, and part of the results(Sections 3.1, 3.2, 3.5, and 3.7).

关键词： overlap indices performance

A study on the relevance of airway inflammatory indices in induced sputum and airway hyperresponsiveness in asthmatics

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China Medical Abstracts(Internal Medicine) 2006年第4期23卷 213-214页

作者：厐亚敏 Dept Respir Med West China Hosp Sichuan UnivChengdu 610041

Objective To analyze the correlations between NO3-/NO2-,eosinophil counts in induced sputum and airway hyperresponsiveness (AHR) and therefore to explore the clinical significance of these parameters in severity assessment and medication adjustment in patients with mild to moderate asthma. Methods From February 2003 to June 2004,35 outpatients with mild to moderate persistent asthma (mild:9, moderate:26) from Huaxi Hospital asthma clinic were treated with combined medi-

关键词： airway asthma eosinophil medication moderate persistent severity relevance indices adjustment

Psychometric properties of the Caregiver Strain Questionnaire among Chinese parents of children with ADHD or ASD

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General Psychiatry 2021年第2期34卷 78-86页

作者： Runxu Yang Huizhi Zhou Jin Liu Yufeng Wang Yan Zhang Yanjiao Wang Ruixiang Liu Xia Cao Dong Han Shuran Yang Jianzhong Yang Chuanyuan Kang Psychiatry Department Kunming Medical University First Affilliated HospitalKunmingYunnanChina Department of Psychosomatic Medicine Shanghai East HospitalTongji University School of MedicineShanghaiChina Psychiatry Department Peking University Sixth HospitalBeijingChina Psychiatry Department Kunming Medical University Second HospitalKunmingYunnanChina Department of Clinical Psychology The Second People's Hospital of Yunnan ProvinceKunmingChina Department of Science and Education Kunming Medical University Second HospitalKunmingYunnanChina

Background There is an urgent need in clinical practice to measure the stress of parenting.The Caregiver Strain Questionnaire(CGSQ)was found to be useful to measure parenting stress,but it has not been validated among the Chinese population.Aims To assess the reliability and construct validity of the Chinese version of CGSQ among Chinese parents.Methods From 2016 to 2017,266 parents(patient group)with a child having DSM-5-defined attention deficit hyperactivity disorder(ADHD)(n=107)or autism spectrum disorder(ASD)(n=159)and 268 parents of healthy children(control group)were recruited to the present study in Kunming,Yunnan province.All the parents were asked to fill out the Chinese version of CGSQ.We conducted exploratory factor analysis and confirmatory factor analysis(CFA)to verify construct validity of CGSQ in both patient and control groups.Cronbach’s α coefficient as an index of internal consistency was assessed for each subscale.Fourteen days later,23 subjects filled out the scale again.Intra-class correlation coefficient was calculated to evaluate the test-retest reliability.Results(1)Cronbach’s alpha of the global scale was 0.901 for the control group and 0.952 for the patient group.The test-retest reliability for the whole scale was 0.890;(2)CFA indicated that the three-factor model had better fitting indices compared with the two-factor model in both groups.Besides,the fitting indices in the patient group were more favourable than those of the control group,withχ2/df=1.564,Goodness-of Fit Index=0.841,Comparative Fit Index=0.954,and root mean square error of approximation=0.065 for the patient group at three-factor model;(3)The caregiver strain of ASD parents was statistically higher than that of ADHD parents,and caregiver strain of ADHD parents was higher than that of control group.Conclusion These findings provide initial evidence to support the construct validity and reliability of CGSQ as a parenting stress measurement tool for Chinese parents,especially for parents of children with ADHD or ASD.

关键词： ASD indices filled

Estimation of biomass in wheat using random forest regression algorithm and remote sensing data

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The Crop Journal 2016年第3期4卷 212-219页

作者： Li'ai Wang Xudong Zhou Xinkai Zhu Zhaodi Dong Wenshan Guo Key Laboratory of Crop Genetics and Physiology of Jiangsu Province Yangzhou University Information Engineering College of Yangzhou University

Wheat biomass can be estimated using appropriate spectral vegetation indices.However,the accuracy of estimation should be further improved for on-farm crop management.Previous studies focused on developing vegetation indices,however limited research exists on modeling algorithms.The emerging Random Forest(RF) machine-learning algorithm is regarded as one of the most precise prediction methods for regression modeling.The objectives of this study were to(1) investigate the applicability of the RF regression algorithm for remotely estimating wheat biomass,(2) test the performance of the RF regression model,and(3) compare the performance of the RF algorithm with support vector regression(SVR) and artificial neural network(ANN) machine-learning algorithms for wheat biomass estimation.Single HJ-CCD images of wheat from test sites in Jiangsu province were obtained during the jointing,booting,and anthesis stages of growth.Fifteen vegetation indices were calculated based on these images.In-situ wheat above-ground dry biomass was measured during the HJ-CCD data acquisition.The results showed that the RF model produced more accurate estimates of wheat biomass than the SVR and ANN models at each stage,and its robustness is as good as SVR but better than ANN.The RF algorithm provides a useful exploratory and predictive tool for estimating wheat biomass on a large scale in Southern China.

关键词： Above-ground dry biomass Triticum aestivum Vegetation indices Wheat

Global sensitivity analysis of certain and uncertain factors for a circular tunnel under seismic action

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Frontiers of Structural and Civil Engineering 2019年第6期13卷 1289-1300页

作者： Nazim Abdul NARIMAN Raja Rizwan HUSSAIN Ilham Ibrahim MOHAMMAD Peyman KARAMPOUR Department of Civil Engineering Tishk International University SulaimaniSulaimaniya 46001Iraq Civil Engineering Department College of EngineeringKing Saud UniversityRiyadh 11421Saudi Arabia Department of Mechanical Engineering Faculty of EngineeringArak UniversityArak 38156-875Iran

There are many certain and uncertain design factors which have unrevealed rational effects on the generation of tensile damage and the stability of the circular tunnels during seismic actions.In this research paper,we have dedicated three certain and four uncertain design factors to quantify their rational effects using numerical simulations and the Sobol's sensitivity indices.Main effects and interaction effects between the design factors have been determined supporting on variance-based global sensitivity analysis.The results detected that the concrete modulus of elasticity for the tunnel lining has the greatest effect on the tensile damage generation in the tunnel lining during the seismic action.In the other direction,the interactions between the concrete density and both of concrete modulus of elasticity and tunnel diameter have appreciable effects on the tensile damage.Furthermore,the tunnel diameter has the deciding effect on the stability of the tunnel structure.While the interaction between the tunnel diameter and concrete density has appreciable effect on the stability process.It is worthy to mention that SoboFs sensitivity indices manifested strong efficiency in detecting the roles of each design factor in cooperation with the numerical simulations explaining the responses of the circular tunnel during seismic actions.

关键词： shear waves SoboFs sensitivity indices maximum principal stress maximum overall displacement tensile damage

Uncertainty quantification of stability and damage detection parameters of coupled hydrodynamic-ground motion in concrete gravity dams

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Frontiers of Structural and Civil Engineering 2019年第2期13卷 303-323页

作者： Nazim Abdul NARIMAN Tom LAHMER Pevman KARAMPOUR Institute of Structural Mechanics Faculty of Civil EngineeringBauh aus Universitat Weimar99423 WeimarGermany Department of Mechanical Engineering Faculty of EngineeringArak UniversityArak 38156-8-8849Iran

In this paper, models of the global system of the Koyna dam have been created using ABAQUS software considering the dam-reservoir-fbundation interaction. Non coupled models and the coupled models were compared regarding the horizontal displacement of the dam crest and the differential settlement of the dam base in clay foundation. Meta models were constructed and uncertainty quantification process was adopted by the support of Sobol's sensitivity in dices considering five un certain parameters by exploiting Box-Behnken experimental method. The non coupled models results determined overestimated predicted stability and damage detection in the dam. The rational effects of the reservoir height were very sensitive in the variation of the horizontal displacement of the dam crest with a small interaction effect with the beta viscous damping coefficient of the clay fbundation. The modulus of elasticity of the clay foundation was the decisive parameter regarding the variation of the differential settlement of the dam base. The XFEM approach has been used for damage detection in relation with both minimum and maximum values of each uncertain parameter. Finally the effects of clay and rock foundations were determined regarding the resistance against the propagation of cracks in the dam, where the rock fbundation was the best.

关键词： massed foundation hydrodynamic pressure Box-Behnken method meta model Sobol's sensitivity indices

Interaction of ciprofloxacin hydrochloride with sodium dodecyl sulfate in aqueous/electrolytes solution at different temperatures and compositions

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Chinese Journal of Chemical Engineering 2020年第1期28卷 216-223页

作者： Sk.Md.Ali Ahsan Md.Ruhul Amin Shamim Mahbub Mohammad Robel Molla Shahina Aktar Malik Abdul Rub Md.Anamul Hoque Muhammad Nadeem Arshad Mohammed Abdullah Khan Department of Chemistry Jahangirnagar UniversitySavarDhaka 1342Bangladesh Chemistry Department Faculty of ScienceKing Abdulaziz UniversityJeddah-21589Saudi Arabia Center of Excellence for Advanced Materials Research King Abdulaziz UniversityJeddah-21589Saudi Arabia

Interactions of ciprofloxacin hydrochloride(CPFH)with sodium dodecyl sulfate(SDS)were investigated by conductivity measurement in H2O/electrolyte solutions(NaCl,Na2SO4&Na3PO4)over 298.15–318.15 K temperature range(with 5 K interval)considering the human body temperature.In all cases,two critical micelle concentrations(c*)were observed which are increased in the presence of drug and decreased in the presence of salts enunciating the presence of interaction amongst the studied components.For(CPFH+SDS)system in the presence of salt,the c*values at 303.15 K and I=0.50 mmol·kg^-1 followed the order:CNaCl>CNa2SO4>CNa3PO4.TheΔG1,m0 andΔG2,m0values are found to be negative for all systems that show that the micellization process is thermodynamically spontaneous.For(CPFH+SDS)system in water,theΔHm0&ΔSm0 values reveal that the micellization processes is both entropy dominated in almost all cases.In the occurrence of electrolytes,ΔHm0 andΔSm0 values indicate that micellization processes are both entropy&enthalpy restricted at upper temperature but it becomes totally entropy dependent at higher temperature.The higher positiveΔSm0 values indicate the enhanced hydrophobic interaction in presence of salts.The enthalpy-entropy compensation was determined from the linear relationship betweenΔHm0 andΔSm0 values in every state.Different transfer energies as well as compensation temperature and intrinsic enthalpy were also evaluated and the behaviors were comparable to other biological system.

关键词： Ciprofloxacin hydrochloride Sodium dodecyl sulfate Critical micelle concentration Thermodynamic indices Hydrophobic effect