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Triple reverse order law for th. Drazin inverse

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Applied Math.matics(A Journal of Ch.nese Universities) 2024年第1期39卷 55-68页

作者： WANG h.a Zh.NG cheng-cheng College of Sciences Inner Mongolia University of TechnologyHohhot 010051China College of Engineering University of Jinan Quancheng CollegeYantai 265600China

In th.s paper,we investigate th. reverse order law for Drazin inverse of th.ee bound-ed linear operators under some commutation ***,th. Drazin invertibility of sum is also obtained for two bounded linear operators and... 详细信息

关键词： Drazin inverse reverse order law space decomposition

Statistical properties of ideal ph.tons in a two-dimensional dye-filled sph.rical cap cavity

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Ch.nese Ph.sics B 2024年第10期33卷 258-268页

作者： Ze cheng Sch.ol of Ph.sics Huazhong University of Science and TechnologyWuhan 430074China

With.n th. framework of quantum statistical mech.nics,we h.ve proposed an exact analytical solution to th. problemof Bose-Einstein condensation(BEC)of h.rmonically trapped two-dimensional(2D)ideal *** utilize th.s analyticalsolution to investigate th. statistical properties of ideal ph.tons in a 2D dye-filled sph.rical cap *** resultsof numerical calculation of th. analytical solution agree completely with.th. foregoing experimental results in th. BEC ofh.rmonically trapped 2D ideal *** analytical expressions of th. critical temperature and th. condensate fractionare derived in th. th.rmodynamic *** is found th.t th. 2D critical ph.ton number is larger th.n th. one-dimensional(1D)critical ph.ton number by two orders of *** spectral radiance of a 2D sph.rical cap cavity h.s a sh.rppeak at th. frequency of th. cavity cutoff wh.n th. ph.ton number exceeds th. critical value determined by a temperature.

关键词： rigorous results in statistical mech.nics Bose-Einstein condensation 2D ph.tons

Analysis of multi-objective optimisation meth.d for main insulation structure configuration sch.me of valve-side winding of ultra-h.gh.voltage converter transformer considering multi-field coupling

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h.gh.Voltage 2024年第2期9卷 296-308页

作者： Lijun Yang Zh.dong cheng Li cheng Ruijin Liao State Key Laboratory of Power Transmission Equipment Tech.ology School of Electrical EngineeringChongqing UniversityChongqingChina

Because DC conductivities of oil-paper materials can be easily affected by electric field and temperature,th. electrical properties under electro-th.rmal coupling of oil-paper materials sh.uld be considered wh.n optimising th. insulation structure of valve-side winding of th. converter *** on th. finite element multi-ph.sical field coupling simulation,th. multi-objective optimisation of main insulation structure of valve-side winding is carried *** view of th. h.gh.time consuming of multi-ph.sical field calculation and th. actual needs of an insulation structure optimisation,th. Kriging meth.d and tech.ique for order preference by similarity to th. ideal solution(TOPSIS)meth.d are introduced,and combines th.m with.NSGA-II to obtain a joint algorith. th.t can be used for th. optimisation of insulation structure of th. converter *** using th. joint algorith. of multi-objective optimisation,th. insulation structure configuration sch.me of valve-side winding is *** can be seen from th. experiment result th.t,on th. one h.nd,th. joint algorith. adopted can obtain th. insulation structure configuration sch.me th.t meets th. design *** th. oth.r h.nd,wh.n facing th. configuration sch.me optimisation under multi-field coupling,th. computational time required by th.s meth.d is only 0.15%of th.t required by original genetic algorith..

关键词： converter insulation coupling

Improved mass relations of mirror nuclei

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Nuclear Science and Tech.iques 2024年第9期35卷 178-185页

作者： cheng Xu Man Bao Department of Ph.sics University of Shanghai for Science and TechnologyShanghai 200093China

In th.s study,we revisit th. previous mass relations of mirror nuclei by considering 1/N-and 1/Z-dependent terms and th. sh.ll effect across a *** root-mean-squared deviation is 66 keV for 116 nuclei with.neutron number N≥10,as com-pared with.experimental data compiled in th. AME2020 *** predicted mass excesses of 173 proton-rich.nuclei,including 98 unknown nuclei,are tabulated in th. Supplemental Material h.rein with.competitive accuracy.

关键词： Nuclear mass Mirror nuclei Proton-rich.nuclei

Ph.tocatalytic activation of sulfite by N-doped porous bioch.r/MnFe_(2)O_(4) interface-driven catalyst for efficient degradation of tetracycline

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Green Energy & Environment 2024年第3期9卷 481-494页

作者： Long cheng Yuanh.i Ji Jiangsu Province h.-Tech.Key Laboratory for Biomedical Research School of Chemistry and Chemical EngineeringSoutheast UniversityNanjing211189China

A novel ph.to-catalytic system composed of N-doped bioch.rs(NBCs),MnFe_(2)O_(4) and sulfite activation under ultraviolet(NBCs/MnFe_(2)O_(4)/sulfite/UV)was constructed to realize th. efficient eliminate of tetracycline(TC).As th. carrier of MnFe_(2)O_(4),NBCs were synth.sized from alfalfa,wh.ch.h.s large specific surface area,graph.te like structure and h.erarch.cal porous *** adsorption isoth.rm indicated th.t NBCs/MnFe_(2)O_(4)-2:1 h.d th. best adsorption performance for TC(347.56 mg g^(-1)).Th.ough.synergistic adsorption and ph.tocatalysis,th. removal rate of TC reach.d 84%,wh.ch.was significantly h.gh.r th.n th.t of MnFe_(2)O_(4).Electroch.mical impedance spectroscopy(EIS)and Ph.toluminescence(PL)ch.racterization results sh.wed th.t th. introduction of NBCs improved th. separation efficiency of ph.togenerated electron and h.le pairs and enh.nced th. ph.tocatalytic ***,th. adsorption,degradation mech.nism and degradation path.of TC by th. catalyst were systematically analyzed by coupling h.LC–MS measurement with.th. th.oretical *** th. advantages of excellent degradation performance,low cost,easy separation and environmental friendliness of NBCs/MnFe_(2)O_(4),th.s work was expected to provide a new path.for th. practical application of bioch.r.

关键词： Bioch.r MnFe_(2)O_(4) Sulfite Adsorption Ph.tocatalysis

An improved initial rotor position estimation meth.d using h.gh.frequency pulsating voltage injection for PMSM

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Defence Tech.ology（防务技术） 2024年第3期33卷 19-29页

作者： Yang Jiang Ming cheng Sch.ol of Electrical Engineering Southeast UniversityNanjing 210096China

h.gh.frequency pulsating voltage injection meth.d is a good candidate for detecting th. initial rotor position of permanent magnet synch.onous ***,traditional meth.ds require a large number of filters,wh.ch.leads to th. deterioration of system stability and dynamic *** order to solve th.se problems,a new signal demodulation meth.d is proposed in th.s *** proposed new meth.d can directly obtain th. amplitude of h.gh.frequency current,th.s eliminating th. use of filters,improving system stability and dynamic performance and saving th. work of adjusting filter *** addition,a new magnetic polarity detection meth.d is proposed,wh.ch.is robust to current measurement ***,experiments verify th. effectiveness of th. meth.d.

关键词： Initial position detection Signal demodulation algorith. Magnetic polarity detection Filter elimination

Reliability of a Multicomponent Stress-strength.Model Based on a Bivariate Kumaraswamy Distribution with.Censored Data

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Acta Math.maticae Applicatae Sinica 2024年第2期40卷 478-507页

作者： Cong-h.a cheng Sch.ol of Math.matics and Statistics Zhaoqing UniversityZhaoqing 526061China

In th.s paper,we consider a system wh.ch.h.s k statistically independent and identically distributed strength.components and each.component is constructed by a pair of statistically dependent elements with.doubly type-II censored *** elements(X1,Y1),(X2,Y2),…,(Xk,Yk)follow a bivariate Kumaraswamy distribution and each.element is exposed to a common random stress T wh.ch.follows a Kumaraswamy *** system is regarded as operating only if at least s out of k(1≤s≤k)strength.variables exceed th. random *** multicomponent reliability of th. system is given by Rs,k=P(at least s of th.(Z1,…,Zk)exceed T)wh.re Zi=min(Xi,Yi),i=1,…,*** Bayes estimates of Rs,k h.ve been developed by using th. Markov Ch.in Monte Carlo meth.ds due to th. lack of explicit *** uniformly minimum variance unbiased and exact Bayes estimates of Rs,k are obtained analytically wh.n th. common second sh.pe parameter is *** asymptotic confidence interval and th. h.gh.st probability density credible interval are constructed for Rs,*** reliability estimators are compared by using th. estimated risks th.ough.Monte Carlo simulations.

关键词： stress-strength.model bivariate Kumaraswamy distribution multicomponent reliability doubly Type-II censored sch.me interval estimation

A h.storical review of h.brid rice breeding

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Journal of Integrative Plant Biology 2024年第3期66卷 532-545页

作者： Xiaoming Zh.ng Fei Wei cheng cheng Qian Qian State Key Laboratory of Crop Gene Resources and Breeding Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China Yazh.uwan National Laboratory Sanya City 572024China

Th. development of germplasm resources and advances in breeding meth.ds h.ve led to steady increases in yield and quality of rice (Oryza sativa L.). Th.ee milestones in th. recent h.story of rice breeding h.ve contributed to th.se increases: dwarf rice breeding, h.brid rice breeding, and super rice breeding. On th. 50th.anniversary of th. success of th.ee-line h.brid rice,we h.gh.igh. important scientific discoveries in rice breeding th.t were made by Ch.nese scientists and summarize th. broader h.story of th. field. We discuss th. strategies th.t could be used in th. future to optimize rice breeding furth.r in th. h.pe th.t Ch.na will continue to play a leading role in international rice breeding.

关键词： Ch.nese experience dwarf breeding h.brid rice breeding super rice breeding

Unified Classification and Rejection:A One-versus-all Framework

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Mach.ne Intelligence Research 2024年第5期21卷 870-887页

作者： Zh.n cheng Xu-Yao Zh.ng cheng-Lin Liu State Key Laboratory of Multimodal Artificial Intelligence Systems Institute of AutomationChinese Academy of SciencesBeijing100190China Sch.ol of Artificial Intelligence University of Chinese Academy of SciencesBeijing100049China

Classifying patterns of known classes and rejecting ambiguous and novel(also called as out-of-distribution(OOD))inputs are involved in open world pattern *** neural network models usually excel in closed-set classification wh.le perform poorly in rejecting OOD *** tackle th.s problem,numerous meth.ds h.ve been designed to perform open set recognition(OSR)or OOD rejection/detection *** meth.ds mostly take post-training score transformation or h.brid models to ensure low scores on OOD inputs wh.le separating known *** th.s paper,we attempt to build a unified framework for building open set classifiers for both.classification and OOD *** formulate th. open set recognition of K-known-class as a(K+1)-class classification problem with.model trained on known-class samples *** decomposing th. K-class problem into K one-versus-all(OVA)binary classification tasks and binding some parameters,we sh.w th.t combining th. scores of OVA classifiers can give(K+1)-class posterior probabilities,wh.ch.enables classification and OOD rejection in a unified *** maintain th. closed-set classification accuracy of th. OVA trained classifier,we propose a h.brid training strategy combining OVA loss and multi-class cross-entropy *** implement th. OVA framework and h.brid training strategy on th. recently proposed convolutional prototype network and prototype classifier on vision transformer(ViT)*** on popular OSR and OOD detection datasets demonstrate th.t th. proposed framework,using a single multi-class classifier,yields competitive performance in closed-set classification,OOD detection,and misclassification *** code is available at h.tps://***/zh.n-cheng121/CPN_OVA_unified.

关键词： Open set recognition out-of-distribution detection misclassification detection convolutional prototype network oneversus-all Dempster-Sh.fer th.ory of evidence