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A novel signal feature extraction technology based on empirical wavelet transform and reverse dispersion entropy

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Defence Technology（防务技术） 2021年第5期17卷 1625-1635页

作者： yu-xing Li Shang-bin jiao Xiang Gao School of Automation and Information Engineering Xi’an University of TechnologyXi’an710048China School of Electrical Engineering Xi’an University of TechnologyXi’an710048China

Feature extraction is an important part of signal processing,which is significant for signal detection,classification,and *** nonlinear dynamic analysis method can extract the nonlinear characteristics of signals and is widely used in different *** dispersion entropy(RDE)proposed by us recently,as a nonlinear dynamic analysis method,has the advantages of fast computing speed and strong anti-noise ability,which is more suitable for measuring the complexity of signal than traditional permutation entropy(PE)and dispersion entropy(DE).Empirical wavelet transform(EWT),based on the theory of wavelet analysis,can decompose a complex non-stationary signal into a number of empirical wavelet functions(EWFs)with compact support set spectrum,which has better decomposition performance than empirical mode decomposition(EMD)and its improved *** the advantages of RDE and EWT,on the one hand,we introduce EWT into the field of underwater acoustic signal processing and fault diagnosis to improve the signal decomposition accuracy;on the other hand,we use RDE as the features of EWFs to improve the signal separability and ***,we propose a novel signal feature extraction technology based on EWT and RDE in this *** results show that the proposed feature extraction technology can effectively extract the complexity features of actual ***,it also has higher distinguishing ability for different types of signals than five latest feature extraction technologies.

关键词： Feature extraction Empirical mode decomposition Empirical wavelet transform Permutation entropy Reverse dispersion entropy

Germplasm resources and genetic improvement of Akebia:A new fruit crop in China

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Plant Diversity 2023年第6期45卷 712-721页

作者： Shuai-yu Zou Chen Feng Pu-Xin Gao Tong-Jian Li Tian-jiao Jia Hongwen huang Lushan Botanical Garden Chinese Academy of SciencesJiujiang 332900China School of Pharmacy and Life Science Jiujiang UniversityJiujiang 332005China South China Botanical Garden Chinese Academy of SciencesGuangzhou 510650China

Akebia species,belonging to Lardizabalaceae,are widespread from subtropical to temperate environments of China,Japan,and *** known Akebia species have medicinal and dietary value and have been widely cultivated as a new fruit crop in many areas of ***,compared with other crop species,the breeding improvement and commercial cultivation of Akebia remain in their *** review systematically introduces the present germplasm resources,geographical distribution,biological characteristics,interspecific and intraspecific cross compatibility,molecular biology,and breeding progress in Akebia *** plants are widely distributed in Shanxi,Henan,Sichuan,Chongqing,Hunan,Hubei,Jiangxi,Zhejiang,and Fujian provinces of China,and wild Akebia plants exhibit abundant phenotypic and genetic diversity due to their wide range of geographical distribution and high adaptability in different *** artificial hybridization experiments have been conducted in our Akebia germplasm resources *** results showed that there was no reproductive isolation between Akebia species,and fertile progeny could be *** synthesis of knowledge on these species provides insights for the rational development and utilization of these germplasm resources,and can facilitate the development of new breeding lines or varieties for commercial cultivation or ***,perspectives on Akebia breeding research are discussed and conclusions are *** review provided breeders with new insights into Akebia domestication and breeding,and we also proposed five basic steps in the domestication of new fruit crops.

关键词： Akebia Geographical distribution Biological characteristics Cross compatibility Breeding strategy

Lexicon-Augmented Cross-Domain Chinese Word Segmentation with Graph Convolutional Network

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Chinese Journal of Electronics 2022年第5期31卷 949-957页

作者： yu Hao huang Kaiyu WANG yu huang Degen School of Computer Science and Technology Dalian University of Technology School of Foreign Languages Dalian University of Technology

Existing neural approaches have achieved significant progress for Chinese word segmentation(CWS). The performances of these methods tend to drop dramatically in the cross-domain scenarios due to the data distribution mismatch across domains and the out of vocabulary words problem. To address these two issues,proposes a lexicon-augmented graph convolutional network for cross-domain CWS. The novel model can capture the information of word boundaries from all candidate words and utilize domain lexicons to alleviate the distribution gap across domains. Experimental results on the cross-domain CWS datasets(SIGHAN-2010 and TCM)show that the proposed method successfully models information of domain lexicons for neural CWS approaches and helps to achieve competitive performance for crossdomain CWS. The two problems of cross-domain CWS can be effectively solved through various interactions between characters and candidate words based on ***, experiments on the CWS benchmarks(Bakeoff-2005) also demonstrate the robustness and efficiency of the proposed method.

关键词： cross-domain CWS datasets candidate words neural CWS approaches vocabulary words problem text analysis vocabulary convolutional neural nets domain lexicons natural language processing lexicon-augmented cross-domain Chinese word segmentation graph neural networks lexicon-augmented graph convolutional network learning (artificial intelligence) cross-domain scenarios word processing word boundaries

Theory-guided construction of electron-deficient sites via removal of lattice oxygen for the boosted electrocatalytic synthesis of ammonia

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Nano Research 2021年第5期14卷 1457-1464页

作者： Li Zhang Shilong jiao Xin Tan yuliang yuan yu Xiang yu-Jia Zeng Jingyi Qiu Ping Peng Sean C.Smith Hongwen huang College of Materials Science and Engineering Hunan UniversityChangsha410082China College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen518061China Integrated Materials Design Laboratory Department of Applied MathematicsResearch School of PhysicsThe Australian National UniversityCanberraACT2601Australia Research Institute of Chemical Defense Beijing100191China

Rational design of catalytic sites to activate the inert N≡N bond is of paramount importance to advance N2 electroreduction. Here, guided by the theoretical predictions, we construct a NiFe layered double hydroxide (NiFe-LDH) nanosheet catalyst with a high density of electron-deficient sites, which were achieved by introducing oxygen vacancies in NiFe-LDH. Density functional theory calculations indicate that the electron-deficient sites show a much lower energy barrier (0.76 eV) for the potential determining step compared with that of the pristine NiFe-LDH (2.02 eV). Benefiting from this, the NiFe-LDH with oxygen vacancies exhibits the greatly improved electrocatalytic activity, presenting a high NH3 yield rate of 19.44 µg·h−1·mgcat−1, Faradaic efficiency of 19.41% at −0.20 V vs. reversible hydrogen electrode (RHE) in 0.1 M KOH electrolyte, as well as the outstanding stability. The present work not only provides an active electrocatalyst toward N2 reduction but also offers a facile strategy to boost the N2 reduction.

关键词： nitrogen reduction density functional theory oxygen vacancies electron-deficient sites

Short-term Scheduling of Steam Power System in Iron and Steel Industry under Time-of-use Power Price

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Journal of Iron and Steel Research International 2015年第9期22卷 795-803页

作者： yu-jiao ZENG Yan-guang SUN State Key Laboratory of Hybrid Process Industry Automation System and Equipment Technology Automation Research and Design Institute of Metallurgical Industry

A generalized formulation for short-term scheduling of steam power system in iron and steel industry under the time-of-use（TOU）power price was presented,with minimization of total operational cost including fuel cost,equipment maintenance cost and the charge of exchange power with main *** model took into account the varying nature of surplus byproduct gas flows,several practical technical constraints and the impact of TOU power *** major types of utility equipments,involving boilers,steam turbines,combined heat and power（CHP）units,and waste heat and energy recovery generators（WHERG）,were separately modeled using thermodynamic balance equations and regression *** order to solve this complex nonlinear optimization model,a new improved particle swarm optimization（IPSO）algorithm was proposed by incorporating time-variant parameters,a selfadaptive mutation scheme and efficient constraint handling ***,a case study for a real industrial example was used for illustrating the model and validating the effectiveness of the proposed approach.

关键词： short-term optimization byproduct gas distribution steam and power dispatch CHP iron and steel industry time-of-use power price

Effect of cyclic quenching treatment on microstructural evolution and properties of ductile cast iron

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Journal of Iron and Steel Research International 2023年第1期30卷 126-136页

作者： jiao-jiao Bai Feng yu Cun-yu Wang Hui Wang Yang Xu Xing-pin Chen Wen-quan Cao College of Materials Science and Engineering Chongqing UniversityChongqing 400044China Special Steel Institute Central Iron and Steel Research Institute(CISRI)Beijing 100081China College of Materials Science and Engineering Xi’an University of TechnologyXi’an 710000ShaanxiChina

Due to the coarse grain microstructure and low hardness of ductile cast iron(DCI),this material is unable to meet the performance requirements of bearing structural *** obtain ultra-fine-grained and ultra-hardened DCI,the influence of a cyclic quenching treatment on the evolution process and properties of DCI after three cycles of quenching at 860℃ for 30 min was investigated through morphology and grain-size characterization,X-ray diffraction analysis,and mechanical-property determination of *** was found that the microstructure and performance depended strongly on the process of the cyclic *** an increasing number of cycles,the grain size of austenite was significantly refined from 41.2 to 12.3μm,and the length and width of lath/plate martensite,as well as the lath and twins,are *** the meantime,the morphology of retained austenite changed from blocky to granular,together with the stability *** experimental sample obtained a performance with a hardness higher than 60 HRC after cyclic quenching treatment due to the refined grain size and increased dislocation density.

关键词： Ductile cast iron Cyclic quenching Grain size Microstructure Hardness

Quantum Statistical Behaviors of Interaction of an Atomic Bose-Einstein Condensate with Laser

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Communications in Theoretical Physics 2001年第10期36卷 449-454页

作者： yu Zhao-Xian jiao Zhi-Yong Theoretical Physics Division Nankai Institute of Mathematics Nankai University Tianjin 300071 China Department of Physics Petroleum University East China Dongying 257061 Shandong Province China Department of Physics Petroleum University East China Dongying 257061 Shandong Province China

We have investigated quantum statistical behaviors of photons and atoms in interaction of an atomic Bose Einstein condensate with quantized laser field. When the quantized laser field is initially prepared in a superposition state which exhibits holes in its photon-number distribution, while the atomic field is initially in a Fock state, it is found that there is energy exchange between photons and atoms. For the input and output states, the photons and atoms may exhibit the sub-Poissonian distribution. The input and output laser fields may exhibit quadrature squeezing, but for the atomic field, only the output state exhibits quadrature squeezing. It is shown that there exists the violation of the Cauchy-Schwartz inequality, which means that the correlation between photons and atoms is nonclassical.

关键词： atomic Bose-Einstein condensate, sub-Poissonian distribution, quadrature squeezing, CauchySchwartz inequality

Guben Tongluo Formula Protects LPS-induced Damage in Lamina Propria B Lymphocytes Through TLR4/MyD88/NF-κB Pathway

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Current Medical Science 2022年第5期42卷 991-999页

作者： Qing WU Wei MENG jiao-jiao SHEN Jia-yuan BAI Luo-bing WANG Ting-yu LIANG Di huang Pei-cheng SHEN Department of Nephrology Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghai201203China Department of Clinical Laboratory Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghai201203China Department of Nursing Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghai201203China Department of Pathology Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghai201203China Key Laboratory of Liver and Kidney Diseases Shanghai201203China Key Laboratory of Liver and Kidney Diseases(Shanghai University of Traditional Chinese Medicine) Ministry of EducationShanghai201203China Shanghai Key Laboratory of Traditional Chinese Clinical Medicine(20DZ2272200) Shanghai201203China

Objective The main pathological feature of immunoglobulin A nephropathy(IgAN),an autoimmune kidney disease,is the deposition of IgA immune complexes,accompanied by mesangial cell proliferation and elevated urine *** Guben Tongluo formula(GTF)is a traditional Chinese medicine prescription,which has predominant protective effects on ***,the therapeutic mechanism of the GTF in IgAN remains *** present study aimed to determine the effects of GTF in treating IgAN via regulating the TLR4/MyD88/NF-κB *** In the present study,lamina propria B lymphocytes were treated with different concentrations of lipopolysaccharide(LPS)(0,1,5,10 and 20 ng/mL).Flow cytometry was used to define positive CD86+CD19+***-8 assay was used to examine cell *** was used to induce TLR4 ***-PCR and Western blotting were used to determine gene *** It was found that the LPS dose-dependently increased the content of IgA and galactose-deficient IgA1(Gd-IgA),the levels of TLR4,Cosmc,MyD88 and phosphorylated(p)-NF-κB,and the ratio of CD86+CD19+and IgA-producing B ***,the TLR4 knockdown reversed the role of *** suggests that TLR4 mediates the effects of LPS on lamina propria B ***,the GTF could dose-dependently counteract the effects of LPS and TLR4 overexpression on lamina propria B lymphocytes through the TLR4/MyD88/NF-κB *** Collectively,these results demonstrate that the GTF can regulate the TLR4/MyD88/NF-κB pathway to treat IgAN model lamina propria B lymphocytes stimulated by LPS.

关键词： Guben Tongluo formula immunoglobulin A nephropathy lamina propria B lymphocytes TLR4/MyD88/NF-κB

A new horizon for neuroscience:terahertz biotechnology in brain research

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Neural Regeneration Research 2025年第2期20卷 309-325页

作者： Zhengping Pu yu Wu Zhongjie Zhu Hongwei Zhao Donghong Cui Shanghai Key Laboratory of Psychotic Disorders Shanghai Mental Health CenterShanghai Jiao Tong University School of MedicineShanghaiChina Department of Psychiatry Kangci Hospital of JiaxingTongxiangZhejiang ProvinceChina Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghaiChina Key Laboratory of Interfacial Physics and Technology Shanghai Institute of Applied PhysicsChinese Academy of ScienceShanghaiChina National Facility for Protein Science in Shanghai Shanghai Advanced Research InstituteChinese Academy of SciencesShanghaiChina

Terahertz biotechnology has been increasingly applied in various biomedical fields and has especially shown great potential for application in brain *** this article,we review the development of terahertz biotechnology and its applications in the field of *** evidence indicates promising prospects for the use of terahertz spectroscopy and terahertz imaging techniques in the diagnosis of amyloid disease,cerebrovascular disease,glioma,psychiatric disease,traumatic brain injury,and myelin *** vitro and animal experiments have also demonstrated the potential therapeutic value of terahertz technology in some neuropsychiatric *** the precise underlying mechanism of the interactions between terahertz electromagnetic waves and the biosystem is not yet fully understood,the research progress in this field shows great potential for biomedical noninvasive diagnostic and therapeutic ***,the biosafety of terahertz radiation requires further exploration regarding its two-sided efficacy in practical *** review demonstrates that terahertz biotechnology has the potential to be a promising method in the field of neuropsychiatry based on its unique advantages.

关键词： biological effect brain neuron neuropsychiatry neuroscience non-thermal effect terahertz imaging terahertz radiation terahertz spectroscopy terahertz technology