检索结果-南通市图书馆

Construction of Optimal Mixed-Level Uniform Designs

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Systems Science & Complexity 2024年第2期37卷 841-862页

作者： CHATTERJEE Kashinath LIU Min-Qian QIN Hong YANG Liuqing Department of Population Health Sciences Division of Biostatistics and Data ScienceAugusta UniversityGA 30912USA NITFID LPMC&KLMDASRSchool of Statistics and Data ScienceNankai UniversityTianjin 300071China school of statistics and Mathematics Zhongnan University of Economics and LawWuhan 430073China

The theory of uniform design has received increasing interest because of its wide application in the field of computer *** generalized discrete discrepancy is proposed to evaluate the uniformity of the mixed-level factorial *** this paper,the authors give a lower bound of the generalized discrete discrepancy and provide some construction methods of optimal mixed-level uniform designs which can achieve this lower *** methods are all deterministic construction methods which can avoid the complexity of stochastic *** saturated mixed-level uniform designs and supersaturated mixed-level uniform designs can be obtained with these ***,the resulting designs are also χ^(2)-optimal and minimum moment aberration designs.

关键词： Generalized discrete discrepancy Hadamard matrix mixed-level design orthogonal array supersaturated design

Healthy life expectancy with cardiovascular disease among Chinese rural population based on the prospective cohort study

在线全文

学校读者我要写书评

暂无评论

Journal of Geriatric Cardiology 2024年第8期21卷 799-806页

作者： Feng JIANG Xiao-Tian LIU Ze HU Wei LIAO Shuo-Yi LI Rui-Fang ZHU Zhen-Xing MAO Jian HOU Sohail Akhtar Fayaz Ahmad Tahir Mehmood Chong-Jian WANG Department of Epidemiology and biostatistics College of Public HealthZhengzhou UniversityZhengzhouChina Department of Mathematics and statistics The University of HaripurHaripurPakistan school of Natural Sciences National University of Sciences and TechnologyIslamabadPakistan

BACKGROUND Limited research has explored the impact of cardiovascular disease(CVD)on healthy life expectancy(HLE)especially in resource-limited *** study aimed to investigate the association between CVD and HLE in Chinese rural *** This study included 11,994 participants aged 45 years and older from the baseline and follow-up surveys of the Henan rural cohort *** status was measured via a Visual Analogue *** multistate Markov model was applied to estimate the association between CVD and transitions in health,unhealthiness and ***-specific total life expectancy,HLE and unhealthy life expectancy were calculated by the multistate life table *** During a mean follow-up time of 3.85(3.84–3.86)years,there were 588 deaths *** individuals with CVD,the risk of switching from health to unhealthiness status was increased by 71%[hazard ratio(HR)=1.71,95%CI:1.42–2.07],the chance of recovery was reduced by 30%(HR=0.70,95%CI:0.60–0.82).Men aged 45 years without CVD could gain an extra 7.08(4.15–10.01)years of HLE and lose 4.00(1.60–6.40)years of unhealthy life expectancy compared to their peers with CVD,*** corresponding estimates among women were 8.62(5.55–11.68)years and 5.82(2.59–9.04)years,*** This study indicated that CVD was significantly associated with poorer health status and lower HLE among Chinese rural *** is an important public health policy to adopt targeted measures to reduce the CVD burden and enhance the quality of life and HLE in resource-limited areas.

关键词： Healthy cardiovascular life

Epidemiological Characteristics of Fracture Among Children Aged 6-17 Years-China,2019-2021

在线全文

学校读者我要写书评

暂无评论

China CDC weekly 2024年第32期6卷 799-803,I0001页

作者： Lu Cui Qian Gan Juan Xu Peipei Xu Titi Yang Wei Cao Hongliang Wang Haoyan Guo Ruihe Luo Jianfen Zhang Hui Pan Wenhua Zhao Zhenyu Yang Yuxiang Yan Qian Zhang Department of Epidemiology and biostatistics School of Public HealthCapital Medical UniversityBeijingChina National Institute for nutrition and Health Chinese Center for Disease Control and PreventionBeijingChina Key Laboratory of Public nutrition and Health National Health Commission of the People’s Republic of ChinaBeijingChina

Summary What is already known about this topic?Fractures are a common and serious injury among *** many studies have utilized clinical data,there is a lack of large-scale community-based research in *** is added by this report?This cross-sectional study provides national and regionally representative data on the prevalence of fractures among Chinese children aged 6–17 years(6.93%),with higher rates observed in males than in females(8.13%vs.5.71%)and in rural areas compared to urban areas(7.22%vs.6.62%).The most common site of fracture was the upper limbs(4.24%,accounting for 63.0%of fractures).What are the implications for public health practice?The need to enhance awareness of fracture prevention is critical,particularly for children in rural areas and males in middle *** recommend that local authorities increase investments in educational programs and child safety ***,promoting balanced diets for children,training in proper exercise techniques,and reinforcing participation in outdoor sports are essential.

关键词： prevention utilized children

Sliced Average Variance Estimation for Tensor Data

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Mathematicae Applicatae Sinica 2024年第3期40卷 630-655页

作者： Chuan-quan LI Pei-wen XIAO Chao YING Xiao-hui LIU school of statistics Jiangxi University of Finance and EconomicsNanchang 330013China Key Laboratory of Data Science in Finance and Economics Jiangxi University of Finance and EconomicsNanchang 330013China biostatistics.and Medical Informatics University of Wisconsin MadisonMadison 53726USA

Tensor data have been widely used in many fields,e.g.,modern biomedical imaging,chemometrics,and economics,but often suffer from some common issues as in high dimensional *** to find their low-dimensional latent structure has been of great interest for *** this end,we develop two efficient tensor sufficient dimension reduction methods based on the sliced average variance estimation(SAVE)to estimate the corresponding dimension reduction *** first one,entitled tensor sliced average variance estimation(TSAVE),works well when the response is discrete or takes finite values,but is not■consistent for continuous response;the second one,named bias-correction tensor sliced average variance estimation(CTSAVE),is a de-biased version of the TSAVE *** asymptotic properties of both methods are derived under mild *** and real data examples are also provided to show the superiority of the efficiency of the developed methods.

关键词： tensor data sliced average variance estimation sufficient dimension reduction central subspace

Distributed Heterogeneous Multi-Agent Optimization with Stochastic Sub-Gradient

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Science & Complexity 2024年第4期37卷 1470-1487页

作者： HU Haokun MO Lipo CAO Xianbing school of Mathematics and statistics Central South UniversityChangsha 410083China school of Mathematics and statistics Beijing Technology and Business UniversityBeijing 100048China Research Centre for Agri-Product Quality Traceability Beijing Technology and Business UniversityBeijing 100048China school of Computer and Artificial Intelligence Beijing Technology and Business UniversityBeijing 100048China China Food Flavor and nutrition Health Innovation Center Beijing Technology and Business UniversityBeijing 100048China

This paper studies the optimization problem of heterogeneous networks under a timevarying *** agent only accesses to one local objective function,which is *** improved algorithm with noisy measurement of local objective functions' sub-gradients and additive noises among information exchanging between each pair of agents is designed to minimize the sum of objective functions of all *** weaken the effect of these noises,two step sizes are introduced in the control *** graph theory,stochastic analysis and martingale convergence theory,it is proved that if the sub-gradients are uniformly bounded,the sequence of digraphs is balanced and the union graph of all digraphs is joint strongly connected,then the designed control protocol can force all agents to find the global optimal point almost *** last,the authors give some numerical examples to verify the effectiveness of the stochastic sub-gradient algorithms.

关键词： Communication noises distributed stochastic optimization heterogeneous networks subgradient measurement noises

Genetic Insights into Glycine’s Protective Role Against CAD—European and East Asia,2015 and 2020

在线全文

学校读者我要写书评

暂无评论

China CDC weekly 2024年第9期6卷 168-172,I0003-I0008页

作者： Jiaying Yu Zhuolin Zhu Ting Wang Yuanhao Wei Lianjie Huang Qianru Zhang Yuting Zhang Yiran Wang Guiyou Liu Xiang Shu Rennan Feng Department of nutrition and Food Hygiene School of Public HealthHarbin Medical UniversityHarbin CityHeilongjiang ProvinceChina Key Laboratory of Precision nutrition and Health of Ministry of Education School of Public HealthHarbin Medical UniversityHarbin CityHeilongjiang ProvinceChina Songyang County Center for Disease Prevention and Control Songyang CityZhejiang Province China Department of Neurology Xuanwu HospitalCapital Medical UniversityBeijingChina Department of Epidemiology and biostatistics Memorial Sloan Kettering Cancer CenterNew York CityNYUSA

Introduction:The purpose of this study is to examine the potential causal relationship between levels of circulating glycine and coronary artery disease(CAD)using a two-step Mendelian randomization(MR)***:We analyzed data from genome-wide association studies(GWAS)conducted on European and East Asian *** assess the causal effects of circulating glycine levels on the risk of *** used the inverse-variance weighting(IVW),weighted median(WM),MR-Egger,and Mendelian Randomization Pleiotropy RESidual Sum and Outlier(MR-PRESSO)***,we conducted mediation analysis to investigate the contribution of blood pressure and other cardiovascular disease-related ***:The two-step Mendelian randomization analysis revealed that higher levels of glycine in the blood were associated with a reduced risk of CAD in Europeans[odds ratio(OR)=0.84,95%confidence interval(CI):0.72,−0.98;P=0.029]and East Asians:(OR=0.76,95%CI:0.66,−0.89;P=3.57×10−4).Sensitivity analysis confirmed the robustness of these ***,our results suggest that about 6.06%of the observed causal effect is mediated through genetically predicted systolic blood pressure(SBP)in the European ***:Our results contribute to the current knowledge regarding the involvement of glycine in the progression of CAD,and provide valuable methodological insights for the prevention and treatment of this condition.

关键词： CAD prevention involvement

Dynamic evolution of an SVEIR model with variants and non-pharmaceutical interventions for controlling COVID-19

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Biosafety and Biosecurity 2024年第2期6卷 67-75页

作者： Ruiyang Zhou Shaojian Cai Guangmin Chen Senzhong Huang Zhen Jin Zhihang Peng Weichuan Lin Fengying Wei Kuicheng Zheng school of Mathematics and statistics Fuzhou UniversityFuzhou 350116FujianChina Fujian Provincial Center for Disease Control and Prevention Fuzhou 350012FujianChina school of statistics and Data Science ZhiYing Research Center for Health DataNankai UniversityTianjin 300071China Complex Systems Research Center Shanxi UniversityTaiyuan 030006ShanxiChina Department of biostatistics School of Public HealthNanjing Medical UniversityNanjing 211166JiangsuChina school of Mathematics and statistics Fujian Normal UniversityFuzhou 350007FujianChina Center for Applied Mathematics of Fujian Province Fuzhou UniversityFuzhou 350116FujianChina Key Laboratory of Operations Research and Control of Universities in Fujian Fuzhou UniversityFuzhou 350116FujianChina Fujian Provincial Key Laboratory of Zoonosis Research Fuzhou 350001FujianChina Teaching Base of the school of Public Health of Fujian Medical University Fuzhou 350001FujianChina

The epidemiological characteristics and distributions of two epidemics in Fujian Province of Southeast China were attributed to the complex interactions among variant,host,and non-pharmaceutical interventions(NPIs).All reported cases in the Putian epidemic(September 8–October 2,2021,Delta variant B.1.617.2)and Fuzhou epidemic(October 22–November 18,2022,Omicron variant BA.5.2)were classified by sex,age group,occupation,and location in this *** surveillance data from the Fujian Provincial Center for Disease Control and Prevention,we established a virus-oriented SVEIR(Susceptible–Vaccinated–Exposed–Infected–Recovered)model to investigate the dynamic evolution features of these two variants and the effects of *** optimal simulations were carried out with variants and scenario *** scenario investigations showed that NPIs significantly reduced the transmission risk and infection scales of COVID-19,and that the Omicron variant was more infectious than the Delta ***,the dynamic investigations revealed the increasing tendencies from Delta to Omicron,such as the basic reproduction number,infection rate,percentage of high-risk cases,and the growth *** tendencies were also identified,such as the average recovery period,the awareness delay,and the percentage of symptomatic *** study highlighted that NPIs played critical roles in successfully containing the two *** interventions are strongly recommended to public health policymakers.

关键词： COVID-19 SVEIR model Transmission dynamics Non-pharmaceutical interventions Delta variant Omicron variant

Reduced clinical severity during 2022 Shanghai Spring epidemic of SARS-CoV-2 omicron BA.2 variant infection——an integrated account of virus pathogenicity and vaccination effectiveness

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

National Science Review 2024年第4期11卷 24-27页

作者： Xingyue Wu Yao Chen Kangli Cao Yao Shen Xueling Wu Yilin Yang Zhongshu Kuang Qingrun Li Zhenzhen Lu Yichen Jia Mian Shao Guorong Gu Xiangwei Wang Ye Yao Ying Wang Shaodie Chen Zhigao Yu Wei Wei Longfei Ding Lulu Lan Tianwen Gu Xiangyu Long Jian Sun Lingyu Xing Jiayuan Shen Yi Han Yue Luo Sucheng Mu Mengna Lin Xiaoyan Zhang Rong Zeng Jianqing Xu Guoping Zhao Lihong Huang Zhenju Song Department of Emergency Medicine Clinical Center for Bio-Therapy Department of Biostatistics and Department of UrologyShanghai Key Laboratory of Lung Inflammation and Injury Zhongshan Hospital Fudan University Department of Respiratory and Critical Care Medicine Shanghai Pudong Hospital Fudan University Department of Pulmonology Renji Hospital Shanghai Jiao Tong University School of Medicine Key Laboratory of Systems Biology Center for Excellence in Molecular Cell Science Shanghai Institute of Biochemistry and Cell Biology Chinese Academy of Sciences Shanghai Public Health Clinical Center Fudan University Department of biostatistics School of Public Health Key Laboratory of Public Health Safety of Ministry of Education and Shanghai Institute of Infectious Disease and Biosecurity School of Public Health Fudan University Shanghai Institute of Immunology Department of Immunology and Microbiology Shanghai Institute of Virology Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of EducationSchool of Medicine Shanghai Jiao Tong University State Key Laboratory of Genetic Engineering Fudan Microbiome CenterSchool of Life Sciences Fudan University Bio-Med Big Data Center Shanghai Institute of Nutrition and Health Chinese Academy of Sciences

The emergence of SARS-Co V-2 variant of concern omicron BA.2 led to high infection incidence rates as well as reduced severity of COVID-19 during the Shanghai Spring epidemic of 2022 [1]. We assessed the role of viral pathogenicity and the effectiveness of inactivated vaccines in a retrospective observational study including 10 258 confirmed COVID-19cases identified between April and June of 2022, from four COVID-19 designated hospitals located in two areas of Shanghai, namely the West Bund and the East Bund, where the populations’ demographic characteristics varied significantly (Table S1, Fig. S1).

关键词： REPLICATION

Optimality of Group Testing with Differential Misclassification

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

应用概率统计 2024年第4期40卷 644-662页

作者： LI Yiming ZHANG Hong LIU Aiyi Department of statistics and Finance School of ManagementUniversity of Science and Technology of ChinaHefei230026China biostatistics.and Bioinformatics Branch National Institute of Child Health and Human DevelopmentUSA

Group testing is a method that can be used to estimate the prevalence of rare infectious diseases,which can effectively save time and reduce costs compared to the method of random ***,previous literature only demonstrated the optimality of group testing strategy while estimating prevalence under some strong *** article weakens the assumption of misclassification rate in the previous literature,considers the misclassification rate of the infected samples as a differentiable function of the pool size,and explores some optimal properties of group testing for estimating prevalence in the presence of differential misclassification conforming to this *** article theoretically demonstrates that the group testing strategy performs better than the sample by sample procedure in estimating disease prevalence when the total number of sample pools is given or the size of the test population is *** simulation experiments were conducted to evaluate the performance of group tests in estimating prevalence in the presence of dilution effect.

关键词： group testing sensitivity specificity dilution effect differential misclassification prevalence