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A Nonparametric Model Checking Test for Functional Linear Composite Quantile Regression Models

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Journal of systems science & Complexity 2024年第4期37卷 1714-1737页

作者： XIA Lili DU jiang zhang Zhongzhan Faculty of science Beijing University of TechnologyBeijing 100124China

This paper is focused on the goodness-of-fit test of the functional linear composite quantile regression model.A nonparametric test is proposed by using the orthogonality of the residual and its conditional expectation under the null *** proposed test statistic has an asymptotic standard normal distribution under the null hypothesis,and tends to infinity in probability under the alternative hypothesis,which implies the consistency of the ***,it is proved that the test statistic converges to a normal distribution with nonzero mean under a local alternative *** simulations are reported,and the results show that the proposed test has proper sizes and is sensitive to the considered model *** proposed methods are also applied to two real datasets.

关键词： Composite quantile regression consistent test functional data nonparametric test quadratic form

Reducing the voltage loss of Y-series acceptor based organic solar cells via ternary/quaternary strategies

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Chinese Chemical Letters 2024年第2期35卷 70-86页

作者： Pengyu zhang Zhiyang zhang Heng Sun Jie Li Yi Chen jiang Wang Chuanlang Zhan Key Laboratory of Advanced Materials Chemistry and Devices (AMC&DLab) of the department of Education of Inner Mongolia Autonomous Region Inner Mongolia Key Laboratory of Green CatalysisCollege of Chemistry and Environment ScienceInner Mongolia Normal UniversityHuhehot 010022China

In recent years, with the emergence of non-fullerene fused-ring acceptors, power conversion efficiencies (PCEs) of organic solar cells (OSCs) have exceeded 19%.However, compared to inorganic or perovskite photovoltaic cells, a higher voltage loss has become one of the key factors limiting further improvement in the PCEs of *** ternary/quaternary strategy has been identified as a feasible and effective way to obtain high-efficiency *** this review, a brief outline is given of the key roles that guest materials played in reducing voltage losses in solar cell devices and a brief look at the future material design and the design of ternary/quaternary systems.

关键词： Organic solar cell Ternary/quaternary strategy Open-circuit voltage Voltage loss Non-radiative recombination loss

Flux phases in the extended Hubbard model on the triangular lattice

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science china.Physics,Mechanics & Astronomy) 2024年第9期Mechanics & Astronomy) .卷 152-157页

作者： Yuge Chen Kun jiang Yi zhang jiangping Hu beijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of Sciences school of Physical sciences University of Chinese Academy of Sciences department of Physics and Institute for Quantum science and Technology Shanghai University Shanghai Key Laboratory of High Temperature Superconductors and International Center of Quantum and Molecular Structures Shanghai University Kavli Institute of Theoretical sciences University of Chinese Academy of Sciences New Cornerstone science Laboratory

Using the unrestricted Hartree-Fock variational method, we study the extended Hubbard model in the triangular lattice at 3/4 filling. Due to the nesting instability of the Fermi surface, various density wave states compatible with the 2×2 supercell are found as the ground state by tuning the onsite and nearest neighbor repulsions U and V. Surprisingly, the flux phases with complex bond order parameters are realized in a wide range of the U-V phase diagram. They also acquire nontrivial topological properties due to the spontaneous breaking of the time-reversal symmetry. Our study suggests that the flux phases can be stabilized by the interplay between short-range repulsive interactions in correlated electron systems.

关键词： flux state triangular lattice Hubbard model

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Single-atom Ni-N_(4) for enhanced electrochemical sensing

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Nano Research 2024年第8期17卷 7658-7664页

作者： Zhuhui Qin Bo Tang Guiru zhang Chongqing Zhu Kun jiang Bowei zhang Fu-Zhen Xuan Shanghai Key Laboratory of Intelligent Sensing and Detection Technology East China University of Science and TechnologyShanghai 200237China Key Laboratory of Pressure systems and Safety of Ministry of Education East China University of Science and TechnologyShanghai 200237China school of Mechanical and Power Engineering East China University of Science and TechnologyShanghai 200237China Key Laboratory of Theoretical and Computational Photochemistry Ministry of EducationCollege of ChemistryBeijing Normal UniversityBeijing 100875China Interdisciplinary Research Center School of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240China

Single-atom catalysts(SACs)attract widespread attention in heterogeneous catalysis due to their maximum atomic utilization efficiency and unique physical and chemical ***,their applications in chemical sensing keep huge potential but remain ***,a Ni-N_(4)-C SAC was synthesized for the trace detection of dopamine(DA)and uric acid(UA).The Ni-N_(4)-C SAC exhibited superior sensing performance compared to the Ni *** detection range for DA and UA were 0.05–75μM and 5–90μM with detection limits of 0.027 and 0.82μM,*** functional theory(DFT)computations indicate that Ni-N_(4)-C has a lower reaction barrier during electrochemical process,indicating that the atomic Ni sites possess higher intrinsic activity than Ni ***,DA and UA show strong potential dependency on the Ni-N_(4)-C catalyst,indicating its applicability for their concurrent *** work extends the application of SACs in chemical sensing.

关键词： single-atom catalysts chemical sensing dopamine uric acid

DC Traction Power Supply System Based on Modular Multilevel Converter Suitable for Energy Feeding and De-icing

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CSEE Journal of Power and Energy systems 2024年第2期10卷 649-659页

作者： Lingxi Hou Shuqing zhang Yingdong Wei Xiaoqian Li Qirong jiang Mingrui Li Weirui Li department of Electrical Engineering Tsinghua UniversityBeijing 100084China

A novel DC traction power supply system suitable for energy feeding and de-icing is proposed in this paper for an urban rail transit catenary on the basis of the full bridge submodule (FBSM) modular multilevel converter (MMC). The FBSM-MMC is a novel type of voltage source converter (VSC) and can directly control the output DC voltage and conduct bipolar currents, thus flexibly controlling the power flow of the urban rail transit catenary. The proposed topology can overcome the inherent disadvantages of the output voltage drop in the diode rectifier units, increase the power supply distance and reduce the number of traction substations. The flexible DC technology can coordinate multiple FBSM-MMCs in a wide area and jointly complete the bidirectional control of catenary power flow during the operation of the electric locomotive, so as to realize the local consumption and optimal utilization of the recovered braking energy of the train. In addition, the FBSM-MMCs can also adjust the output current when the locomotive is out of service to prevent the catenary from icing in winter. The working modes of the proposed topology are illustrated in detail and the control strategy is specially designed for normal locomotive operations and catenary de-icing. Simulation cases conducted by PSCAD/EMTDC validate the proposed topology and its control strategy.

关键词： DC traction power supply system de-icing for catenary energy feeding modular multilevel converter based on full-bridge submodules(FBSM-MMC) urban rail transit

Population genomic data reveal low genetic diversity,divergence and local adaptation among threatened Reeves's Pheasant(Syrmaticus reevesii)

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Avian Research 2024年第1期15卷 1-11页

作者： Qi Lu Pengcheng Wang jiang Chang De Chen Shenghan Gao Jacob Hoglund Zhengwang zhang Ministry of Education Key Laboratory for Biodiversity science and Ecological Engineering College of Life SciencesBeijing Normal UniversityBeijing100875China jiangsu Key Laboratory for Biodiversity and Biotechnology College of Life SciencesNanjing Normal UniversityNanjing210023China State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental SciencesBeijing100012China State Key Laboratory of Microbial Resources Institute of MicrobiologyChinese Academy of SciencesBeijing100101China department of Ecology and Genetics Animal EcologyUppsala UniversityUppsalaSweden

Population genomic data could provide valuable information for conservation efforts;however,limited studies have been conducted to investigate the genetic status of threatened ***’s Pheasant(Syrmaticus reevesii)is facing population decline,attributed to increases in habitat *** is a knowledge gap in understanding the genomic status and genetic basis underlying the local adaptation of this threatened ***,we used population genomic data to assess population structure,genetic diversity,inbreeding patterns,and genetic ***,we identified candidate genes linked with adaptation across the current distribution of Reeves’s *** present study assembled the first de novo genome sequence of Reeves’s Pheasant and annotated 19,458 *** also sequenced 30 individuals from three populations(Dabie Mountain,Shennongjia,Qinling Mountain)and found that there was clear population structure among those *** comparing with other threatened species,we found that Reeves’s Pheasants have low genetic *** of homozygosity suggest that the Shennongjia population has experienced serious *** demographic history results indicated that three populations experienced several declines during the glacial *** adaptative analysis among the populations identified 241 candidate genes under directional *** are involved in a large variety of processes,including the immune response and *** results suggest that the three populations should be considered as three different conservation *** current study provides genetic evidence for conserving the threatened Reeves’s Pheasant and provides genomic resources for global biodiversity management.

关键词： Conservation genetics Local adaptation Pheasant Whole-genome sequencing

Emerging non-antibody‒drug conjugates (non-ADCs) therapeutics of toxins for cancer treatment

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Acta Pharmaceutica Sinica B 2024年第4期14卷 1542-1559页

作者： Xiaolan Xu Jiaming zhang Tao Wang Jing Li Yukang Rong Yanfang Wang Chenxia Bai Qing Yan Xiaohua Ran Yingli Wang Tianhong zhang Jin Sun Qikun jiang Wuya College of Innovation Shenyang Pharmaceutical UniversityShenyang 110016China school of Education University of NottinghamNottingham NG72RDUK department of Pharmacy Linyi People's HospitalShandong UniversityLinyi 276000China State Key Laboratory of Natural and Biomimetic Drugs Peking UniversityBeijing 100871China

The non-selective cytotoxicity of toxins limits the clinical relevance of the *** recent years,toxins have been widely used as warheads for antibody-drug conjugates(ADCs)due to their eff-cient killing activity against various cancer *** ADCs confer certain targeting properties to the toxins,low drug loading capacity,possible immunogenicity,and other drawbacks also limit the po-tential application of ***,non-ADC delivery strategies for toxins have been extensively *** further understand the application of toxins in anti-tumor,this paper provided an over-view of prodrugs,nanodrug delivery systems,and biomimetic drug delivery *** addition,toxins and their combination strategies with other therapies were ***,the prospect and challenge of toxins in cancertreatmentwerealso summarized.

关键词： Toxins Non-antibody-drug conjugates Delivery strategies Prodrugs Nano drug delivery systems Biomimetic drugdelivery systems Combination strategies Cancer treatment

DESIGN EFFICIENCY FOR MINIMUM PROJECTION UNIFORMITY DESIGNS WITH TWO LEVELS

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Journal of systems science & Complexity 2011年第4期24卷 761-768页

作者： Hong QIN Na Z0U Shangli zhang department of Statistics Central China Normal University Wuhan 430079 China. department of Mathematics Beijing Jiaotong University Beijing 100044 China.

这份报纸的目的是为最小的设计一致性图案学习设计效率的问题。为有力量二的直角的数组，最小的设计一致性标准是为设计效率标准的一个好代理人的结果表演由 Cheng，邓和唐(2002 ) 求婚了。

关键词：设计效率均匀设计投影正交阵列均匀性标准

Noise helped manifestation of intrinsic frequency:A case study in the mesoscopic hormone signaling system

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Progress in Natural science:Materials International 2009年第10期19卷 1209-1214页

作者： Lin Ji a,,Yuanyuan zhang a,Xiufeng Lang b,Wenxiang Hu a,Qianshu Li c a department of Chemistry,Capital normal university,beijing 100048,china.b school of science,beijing university of Aeronautics and Astronautics,beijing 100191,china.c The Institute for Chemical Physics,beijing Institute of Technology,beijing 100081,china department of Chemistry Capital Normal University Beijing 100048 China school of science Beijing University of Aeronautics and Astronautics Beijing 100191 China The Institute for Chemical Physics Beijing Institute of Technology Beijing 100081 China

The selective sustainment of nonlinear systems to signals is of great significance to signal transduction in living *** take hormone signaling as an example,and investigate the sustainment of internal and external *** results prove that signals with "intrinsic frequency",no matter if it is noise induced or external injected,can be selectively sustained by exploiting internal and/or external *** the internal and external noise can optimize the noise-induced signals,and the optimization is rather robust to the disturbance of external signals with other *** results are of significance for weak signal detection and transduction in the presence of external signals.

关键词： Noise Intrinsic frequency Mesoscopic system