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Interpreting the Basis Path Set in Neural Networks

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Journal of Systems Science & Complexity 2021年第6期34卷 2155-2167页

作者： zhu Juanping MENG Qi CHEN Wei MA Zhiming Department of Mathematics Yunnan UniversityYunnan 650500China Microsoft Research Asia Beijing 100190China Academy of Mathematics and Systems Science Chinese Academy of SciencesBeijing 100190China

The G-SGD algorithm significantly outperforms the conventional SGD algorithm in ReLU neural networks by adopting the basis path ***,how the inner mechanism of basis paths works remains mysterious,and the G-SGD algorithm that helps to find a basis path set is *** paper employs graph theory to investigate structure properties of basis paths in a more general and complicated neural network with unbalanced layers and *** hierarchical Algorithm HBPS is proposed to find a basis path set,by decomposing the complicated network into several independent and parallel *** paper theoretically extends the study of basis paths and provides one methodology to find the basis path set in a more general neural network.

关键词： Basis path hierarchical algorithm independent path neural network substructure path

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Optimal Energy Efficiency Based High-speed Flying Control Method for Hydraulic Quadruped Robot

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Journal of Bionic Engineering 2024年第3期21卷 1156-1173页

作者： Qingjun Yang Zhenyang Zhang Rui zhu Dianxin Wang School of Mechatronics Engineering Harbin Institute of TechnologyHarbin150000China Nanjing Chenguang Group Co.Ltd Nanjing210006China

Herein,a control method based on the optimal energy efficiency of a hydraulic quadruped robot was proposed,which not only realizes the optimal energy efficiency of flying trot gait but also ensures the stability of high-speed ***,the energy consumption per unit distance was adopted as the energy efficiency evaluation index based on the constant pressure oil supply characteristics of the hydraulic system,and the global optimization algorithm was adopted to solve the optimal ***,the gait parameters that affect the energy efficiency of quadruped were analyzed and the mapping relationship between each parameter and energy efficiency was captured,so as to select the optimum combination of energy efficiency parameters,which is significant to improve endurance ***,to ensure the stability of the high-speed flying trot gait motion of the hydraulic quadruped robot,the active compliance control strategy was ***,the proposed method was successfully verified by simulations and *** experimental results reveal that the flying trot gait of the hydraulic quadruped robot can be stably controlled at a speed of 2.2 m/s.

关键词： Hydraulic quadruped robot Flying trot Energy efficiency Active compliance control

A Novel Collision Supervision and Avoidance Algorithm for Scalable MAC of Vehicular Networks

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Chinese Journal of Electronics 2021年第1期30卷 164-170页

作者： WANG Shuai LU Yan zhu Jie WANG Ping School of Information Science and Technology Donghua University

In order to meet low-latency and ultra-reliable requirements on safety services in vehicular networks, this paper proposes a novel Collision supervision and avoidance(CSA) algorithm for the contention based scalable media access control protocol. The two-dimensional Markov chain model of adaptive backoff state transition criterion in CSA has been built, which could efficiently match the backoff states of nodes to the dynamic changes of vehicular networks. The scalable transmissions can be achieved through supervised trend and matching backoff mechanisms with three adaptive backoff *** packet transmit probabilities for the backoff modes have been derived with the theoretical result of the enhanced throughput. The simulation results show the remarkable scalability performance such as normalized throughput > 0.92, PDR > 86% and delay < 6.5 ms even in the high-density and high-mobility environment.

关键词： vehicular networks Markov processes access protocols scalable MAC remarkable scalability performance novel Collision supervision adaptive backoff modes CSA matching backoff mechanisms scalable transmissions scalable media access control protocol ultrareliable requirements two-dimensional Markov chain model probability time 6.5 ms safety services supervised trend avoidance algorithm state transition criterion

Treatment of oily wastewater using submerged photocatalytic membrane reactor

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Particuology 2024年第11期94卷 252-260页

作者： Hassan G.Gomaa Wen Zhou Jesse zhu Chemical and Biochemical Engineering Department Western UniversityLondonONN6A 5B9Canada

The increase in oily contaminated wastewater emissions has made it essential to develop efficient treatment approaches to mitigate its negative impact on the ecosystem and human *** this research,a suspended catalyst photocatalytic membrane reactor(SPMR)is developed for simultaneous oil-water separation as well as pollutants degradation using ZnO as a photocatalyst and a submerged LED-UV light.A composite membrane unit was used in the reactor that was made of a polymeric layer and a superhydrophilic(SHPI)underwater oleophobic *** later was prepared by attaching ZnO nanoparticles(NP)on stainless steel mesh using the spraying *** pure water flux of the composite membrane was comparable to that of the pristine polymeric membrane indicating minor resistance of the SHPI *** oil-water emulsion,water flux∼1332 L m^(−2) h^(−1) was achieved at 20 kPa transmembrane pressure(TMP)with∼99%oil separation *** methylene blue dye(MB)decolourizations to assess simultaneous oil-water separation and pollutant degradation efficiencies,close to 86%dye decolourization and near complete oil water separation was *** results suggest a promising potential of the proposed design for treatment of contaminated oily wastewater.

关键词： Membrane reactors Photocatalysis Emulsions

Destruction geodynamics of the North China Craton and its Paleoproterozoic plate tectonics

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Chinese Science Bulletin 2009年第19期54卷 3354-3366页

作者： zhu RiXiang ZHENG TianYu Paleomagnetism and Geochronology Laboratory (SKL-LE) Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China

Much attention has been paid in the last two decades to the physical and chemical processes as well as temporal-spatial variations of the lithospheric mantle beneath the North China Craton. In order to provide insights into the geodynamics of this variation, it is necessary to thoroughly study the state and structure of the lithospheric crust and mantle of the North China Craton and its adjacent regions as an integrated unit. Based on the velocity structure of the crust and upper mantle constrained from seismological studies, this paper presents various available geophysical results regarding the lithosphere thickness, the nature of crust-mantle boundary, the upper mantle structure and deformation characteristics as well as their tectonic features and evolution systematics. Combined with the obtained data from petrology and geochemistry, a mantle flow model is proposed for the tectonic evolution of the North China Craton during the Mesozoic-Cenozoic. We suggest that subduction of the Pacific plate made the mantle underneath the eastern Asian continent unstable and able to flow faster. Such a regional mantle flow system would cause an elevation of melt/fluid content in the upper mantle of the North China Craton and the lithospheric softening, which, subsequently resulted in destruction of the North China Craton in different ways of delamination and thermal erosion in Yanshan, Taihang Mountains and the Tan-Lu Fault zone. Multiple lines of evidence recorded in the crust of the North China Craton, such as the amalgamation of the Archean eastern and western blocks, the subduction of Paleo-oceanic crust and Paleo-continental residue, indicate that the Earth in the Paleoproterozoic had already evolved into the plate tectonic system similar to the present plate tectonics.

关键词：地球动力学筑造学研究调查

Expression of human WFDC2 protein from patients with serous carcinomas by the two-tier system

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Chinese Medical Journal 2013年第18期126卷 3576-3577页

作者： zhu Ya-fei GAO Guo-lan ZHANG Zhen-dong HUANG Qing-shui Department of Obstetrics and Gynecology First Affiliated Hospital of Nanchang University Nanchang Jiangxi 330006 China Department of Obstetrics and Gynecology First Affiliated Hospital of Gannan Medical University Ganzhou Jiangxi 341000 China Department of Obstetrics and Gynecology Aviation General Hospital Beijing 100012 China Department Pathology First Affiliated Hospital of Nanchang University Nanchang Jiangxi 330006 China Department Clinical Laboratory Medicine First Affiliated Hospital of Nanchang University Nanchang Jiangxi 330006 China

The human WFDC2 protein, also known as human epididymal secretory protein 4 （HE4）, is a new markerof tumor progressionJ that is used for the differential diagnosis of ovarian cystadenocarcinomas. At present, the pathology of ovarian carcinomas is defined by the “dualistic model”2 and “heterogeneity of ovarian carcinomas”3 theories. Previously, it was considered that ovarian carcinomas originate from the ovaries themselves. The ＂dualistic model＂ assumes an external origin for ovarian carcinomas, in which it is considered that serous ovarian carcinomas originate from secondary implantation of oviduct mucosa epithelium. Epithelial ovarian carcinomas are not a single disease, but a set of ＂heterogeneous diseases＂.3

关键词： human WFDCprotein ovarian neoplasms genetic heterogeneity serous cystadenocarcinoma

Two-dimensional entropy model for video shot partitioning

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Science in China(Series F) 2009年第2期52卷 183-194页

作者： zhu SongHao LIU YunCai Institute of Image Process and Pattern Recognition Shanghai Jiao Tong University Shanghai 200240 China

A shot presents a contiguous action recorded by an uninterrupted camera operation and frames within a shot keep spatio-temporal coherence. Segmenting a serial video stream file into meaningful shots is the first pass for the task of video analysis, content-based video understanding. In this paper, a novel scheme based on improved two-dimensional entropy is proposed to complete the partition of video shots. Firstly, shot transition candidates are detected using a two-pass algorithm： a coarse searching pass and a fine searching pass. Secondly, with the character of two-dimensional entropy of the image, correctly detected transition candidates are further classified into different transition types whereas those falsely detected shot breaks are distinguished and removed. Finally, the boundary of gradual transition can be precisely located by merging the characters of two-dimensional entropy of the image into the gradual transition. A large number of video sequences are used to test our system performance and promising results are obtained.

关键词： video shot segmentation two-dimensional entropy model coarse-to-fine algorithm content-based indexing and retrieval

Hydrodynamic Cavitation Enhanced SR-Aops Degradation of Organic Pollutants in Water:A Review

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Fluid Dynamics & Materials Processing 2024年第4期20卷 671-692页

作者： Xiufeng zhu Jingying Wang School of Energy and Power Engineering Shandong UniversityJinan250061China Key Laboratory of High Efficiency and Clean Machinery Manufacturing of Ministry of Education School of Mechanical EngineeringShandong UniversityJinan250061China

SR-AOP(sulfate radical advanced oxidation process)is a novel water treatment method able to eliminate refractory organic *** cavitation(HC)is a novel green technology,that can effectively produce strong oxidizing sulfate *** paper presents a comprehensive review of the research advancements in these fields and a critical discussion of the principal factors influencing HC-enhanced SR-AOP and the mechanisms of synergistic ***,some insights into the industrial application of HC/PS are also *** research shows that this technology is feasible at the laboratory stage,but its application on larger scales requires further understanding and *** this review,some attention is also paid to the design of the hydrodynamic cavitation reactor and the related operating parameters.

关键词： Hydrodynamic cavitation organic pollutant persulfate degradation influence factor

Clustered spikelets 4,encoding a putative cytochrome P450 protein CYP724B1,is essential for rice panicle development

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Chinese Science Bulletin 2014年第31期59卷 4050-4059页

作者： Min Guo Yi-Hao Yang Min Liu Qing-Cai Meng Xiu-Hong Zeng Ling-Xia dong Shu-zhu Tang Ming-Hong Gu Chang-Jie Yan Jiangsu Key Laboratory of Crop Genetics and Physiology/ Co-Innovation Center for Modern Production Technology of Grain Crops Key Laboratory of Plant Functional Genomics of the Ministry of EducationYangzhou University

Rice(Oryza sativa L.)inflorescence(panicle)architecture is an important agronomic trait,serving as one of the determinants of rice yield.A number of genes related to panicle development have been cloned and functionally characterized so ***,more information is needed for fully understanding of the mechanism underlying the panicle *** the present study,we identified a clustered spikelets 4(cl4)mutant in the 93-11 genetic *** to its wild-type 93-11,cl4 mutant has a typical clustered spikelets phenotype with all primary branches clustered on the base of the main rachis and 2–3abnormal spikelets clustered on the primary ***,cl4 mutant also shows shorter plant height than that of the wild ***-based cloning strategy is performed to clone the CL4 *** a result,CL4 is demonstrated to encode a putative cytochrome P450 protein CYP724B1,which is involved in brassinosteroid *** confirm our mapping result,the CL4 RNAi transgenic plants are *** the transgenic plants also show similar phenotype as the cl4 *** results provide strong evidence that CL4 plays an important role in rice panicle development as well as plant height regulation.

关键词：细胞色素P450 水稻产量小穗集群蛋白编码稻穗转基因植物