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OPTIMAL ALLOCATION FOR ESTIMATING THE CORRELATION COEFFICIENT OF MORGENSTERN TYPE BIVARIATE EXPONENTIAL DISTRIBUTION BY RANKED SET SAMPLING WITH CONCOMITANT VARIABLE

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Journal of Systems Science & Complexity 2013年第2期26卷 249-260页

作者： XIE Minyu XIONG ming wu ming School of Mathematics and Statistics Central China Normal University

Ranked set sample is applicable whenever ranking of a set of sample units can be done easily by a judgement method of the study variable or of the auxiliary variable. This paper considers ranked set sample based on the auxiliary variable X which is correlated with the study variable Y, where （X, Y） follows Morgenstern type bivariate exponential distribution. The authors discuss the optional allocation for unbiased estimators of the correlation coefficient p of the random variables X and Y when the auxiliary variable X is used for ranking the sample units and the study variable Y is measured for estimating the correlation coefficient. This paper first gives a class of unbiased estimators of p when the mean 0 of the study variable Y is known and obtains an essentially complete subclass of this class. Further, the optimal allocation of the unbiased estimators is found in this subclass and is proved to be Bayes, admissible, and minimax. Finally, the unbiased estimator of p under the optimal allocation in the case of known θ is reformed for estimating p in the case of unknown θ, and the reformed estimator is shown to be strongly consistent.

关键词： Concomitants of order statistic Morgenstern type bivariate exponential distribution optimal allocation ranked set sample unbiased estimator.

Probing New Physics from CP Violation in Radiative B Decays

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Chinese Physics Letters 1999年第5期16卷 339-341页

作者： wu yue-liang Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100080

When new CP-violating interactions are dominated by flavor changing neutral particle exchanges,which may occur in many extensions of the standard model,we examine a type-3 two-Higgs-doublet model and find that direct CP asymmetries can be as large as about 25%.Time-dependent and time-integrated mixing-induced CP asymmetries up to 85 and 40%,respectively,are possible without conflict with other *** mainly requirs an enhanced chromo-magnetic dipole b→sg decay to be close to the present experimental bound.

关键词： neutral mixing decay

P2P energy trading via public power networks:Practical challenges,emerging solutions,and the way forward

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Frontiers in Energy 2023年第2期17卷 189-197页

作者： yue ZHOU Jianzhong wu Wei GAN School of Engineering Cardiff UniversityCardiff CF243AAWalesUK

Peer-to-peer(P2P)energy trading is an emerging energy supply paradigm where customers with distributed energy resources(DERs)are allowed to directly trade and share electricity with each other.P2P energy trading can facilitate local power and energy balance,thus being a potential way to manage the rapidly increasing number of DERs in net zero *** is of great importance to explore P2P energy trading via public power networks,to which most DERs are *** the extensive research on P2P energy trading,there has been little large-scale commercial deployment in practice across the *** this paper,the practical challenges of conducting P2P energy trading via public power networks are identified and presented,based on the analysis of a practical Local Virtual Private Networks(LVPNs)case in North Wales,*** ongoing efforts and emerging solutions to tackling the challenges are then summarized and critically ***,the way forward for facilitating P2P energy trading via public power networks is proposed.

关键词： distribution network local virtual private network network charges peer-to-peer(P2P)energy trading practical implementation

Assessment and simulation of evacuation in large railway stations

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Building Simulation 2021年第5期14卷 1553-1566页

作者： yue wu Jian Kang Jingyi Mu Key Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology School of ArchitectureHarbin Institute ofTechnologyNo.66 WestDazhi StreetHarbin 150001China UCL Institute for Environmental Design and Engineering The BartlettUniversity College LondonLondonUK

Evacuation systems in buildings are frequently assessed to improve emergency response *** paper proposes a method to evaluate the performance of different evacuation modes,and determine a rational mode for large railway *** developed a simulation for the evaluation of fire safety in large buildings based on an analytic hierarchy process(AHP)*** approach includes AHP-based exploration and simulation-based *** considered a typical railway station for validation,conducted a field survey to collect the data,and calculated the influencing factors based on expert *** influencing factors were further processed based on the principles of a hierarchical *** relative weights of the influencing factors were calculated through a series of pairwise comparisons using the ***,we applied factor refinement based on the evacuation simulations to determine the degree and status of influence of each *** influence of external factors was generally stronger than that of the internal *** them,the building component characteristics and people's physiological capabilities were the core of the evacuation assessment in large railway ***,the exit width,seat layout,visibility,speed,and reaction capabilities were crucial to the evacuation *** proposed method is practical as it demands limited computations to provide useful information,such as a priority ranking of each influencing factor,for the evaluation process.

关键词： analytic hierarchy process risk analysis large railway station evacuation simulation

Pricing Policy for a Dynamic Spectrum Allocation Scheme with Batch Requests and Impatient Packets in Cognitive Radio Networks

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Journal of Systems Science and Systems Engineering 2022年第2期31卷 133-149页

作者： Haixing wu Shunfu Jin wuyi yue School of Information Science and Engineering Yanshan UniversityQinhuangdao 066004China Key Laboratory for Computer Virtual Technology and System Integration of Hebei Province Yanshan UniversityQinhuangdao 066004China Department of Intelligence and Informatics Konan UniversityKobe 658-8501Japan

In cognitive radio networks(CRNs),multiple secondary users may send out requests simultaneously and one secondary user may send out multiple requests at one time,i.e.,request arrivals usually show an aggregate ***,a secondary user packet waiting in the buffer may leave the system due to impatience before it is transmitted,and this impatient behavior inevitably has an impact on the system *** to investigate the influence of the aggregate behavior of requests and the likelihood of impatience on a dynamic spectrum allocation scheme in CRNs,in this paper a batch arrival queueing model with possible reneging and potential transmission interruption is *** constructing a Markov chain and presenting a transition rate matrix,the steady-state distribution of the queueing model along with a dynamic spectrum allocation scheme is derived to analyze the stochastic behavior of the ***,some important performance measures such as the loss rate,the balk rate and the average delay of secondary user packets are ***,system experiments are carried out to show the change trends of the performance measures with respect to batch arrival rates of secondary user packets for different impatience parameters,different batch sizes of secondary user packets,and different arrival rates of primary user ***,a pricing policy for secondary users is presented and the dynamic spectrum allocation scheme is socially optimized.

关键词： Cognitive radio networks dynamic spectrum scheme batch arrival impatient packets Markov chain social optimization

Pathogenesis of chronic enteropathy associated with the SLCO2A1 gene:Hypotheses and conundrums

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World Journal of Gastroenterology 2024年第19期30卷 2505-2511页

作者： Zhi-Xin Xie yue Li Ai-ming Yang Dong wu Qiang Wang State Key Laboratory of Complex Severe and Rare Diseases Department of GastroenterologyPeking Union Medical College HospitalChinese Academy of Medical SciencesBeijing 100730China Department of Clinical Medicine Peking Union Medical CollegeChinese Academy of Medical SciencesBeijing 100730China

Chronic enteropathy associated with the SLCO2A1 gene(CEAS)is a complex gastroenterological condition characterized by multiple ulcers in the small intestine with chronic bleeding and protein *** review explores the potential mechanisms underlying the pathogenesis of CEAS,focusing on the role of SLCO2A1-encoded prostaglandin transporter OATP2A1 and its impact on prostaglandin E2(PGE2)*** have suggested that elevated PGE2 levels contribute to mucosal damage,inflammation,and disruption of the intestinal *** effects of PGE2 on macrophage activation and Maxi-Cl channel functionality,as well as its interaction with nonsteroidal anti-inflammatory drugs play crucial roles in the progression of *** the balance between its protective and pro-inflammatory effects and the complex interactions within the gastrointestinal tract can shed light on potential therapeutic targets for CEAS and guide the development of novel,targeted therapies.

关键词： SLCO2A1 Prostaglandin E2 Chronic enteropathy associated with the SLCO2A1 gene Small intestine Macrophage

Magnetically recyclable Sm2Co17/Cu catalyst to chemoselectively reduce the 3-nitrostyrene into 3-vinylaniline under room temperature

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Nano Research 2019年第12期12卷 3085-3088页

作者： Zhenhui Ma Hu Liu ming yue College of Materials Science and Engineering Key Laboratory of Advanced Functional MaterialsMinistry of Education of ChinaBeijing University of TechnologyBeijing 100124China MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001China

Using non-noble metal catalysts to chemoselectively reduce the 3-nitrostyrene into 3-vinylaniline is extremely attractive due to the importantapplications of aromatic ***,the separation and recycle of catalytic particles to sustainably catalyze are still challenging on accountof their small *** this communication,we report a novel magnetically recyclable catalyst of Sm2Co17/Cu to chemoselectively reduce3-nitrostyrene into 3-vinylaniline by activating ammonia borane(AB)to yield *** Sm2Co17/Cu,composited of 180 nm Sm2Co17nano magnet and 10 nm Cu catalyst nano particles,shows a high conversi on(98%)and a high selectivity(99%)for 3-nitrostyrene under ultrasonic *** importantly,they are easily collected by self-separation method without any magnetic *** a consequenee,the excellent recyclable feature is acquired even underwent 10 *** approach provides a green strategy to synthesize magneticallyrecyclable catalysts.

关键词： Sm2Co17/Cu chemoselective catalysis 3-nitrostyrene magnetic recycle

72例青少年骨密度测定结果及与骨龄发育的关系分析

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罕少疾病杂志 2025年第1期32卷 141-143页

作者：田明月杨威商丘市第一人民医院儿童保健科河南商丘476100

目的探讨72例青少年骨密度测定结果及与骨龄发育的关系。方法回顾性选取2021年1月至2022年12月于我院测量骨密度的72例青少年的临床资料进行研究。将所有研究对象依据是否发生骨龄提前发育分为提前发育组(n=26)与正常发育组(n=46)。... 详细信息

目的探讨72例青少年骨密度测定结果及与骨龄发育的关系。方法回顾性选取2021年1月至2022年12月于我院测量骨密度的72例青少年的临床资料进行研究。将所有研究对象依据是否发生骨龄提前发育分为提前发育组(n=26)与正常发育组(n=46)。分析不同年龄段青少年骨密度测定结果及与骨龄发育的关系。结果本研究结果显示,提前发育组青少年的性别、BMI、骨密度与正常发育组青少年比较有统计学差异(P0.05)。各个年龄段的青少年年龄与骨龄间均存在统计学差异(P<0.05)。相关性分析显示,青少年骨密度与骨龄发育、生活年龄均呈正相关(P<0.05)。结论青少年群体存在骨龄超龄发育现象,可能与青少年的性别、BMI、骨密度等因素相关。

关键词：骨密度骨龄青少年超龄发育

杨树桑黄多糖对糖尿病大鼠的降血糖效果及心肌保护作用

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