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Earthquake Engineering and Engineering Vibration 2024年第2期23卷 345-358页

作者： Zan zhou Thomas Man-Hoi Lok Wan-Huan zhou Department of Civil and Environmental Engineering Faculty of Science and TechnologyUniversity of MacaoMacaoChina

Surface wave inversion is a key step in the application of surface waves to soil velocity ***,a common practice for the process of inversion is that the number of soil layers is assumed to be known before using heuristic search algorithms to compute the shear wave velocity profile or the number of soil layers is considered as an optimization ***,an improper selection of the number of layers may lead to an incorrect shear wave velocity *** this study,a deep learning and genetic algorithm hybrid learning procedure is proposed to perform the surface wave inversion without the need to assume the number of soil ***,a deep neural network is adapted to learn from a large number of synthetic dispersion curves for inferring the layer ***,the shear-wave velocity profile is determined by a genetic algorithm with the known layer *** applying this procedure to both simulated and real-world cases,the results indicate that the proposed method is reliable and efficient for surface wave inversion.

关键词： surface wave inversion analysis shear-wave velocity profile deep neural network genetic algorithm

Additive manufacturing of micropatterned functional surfaces:a review

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International Journal of Extreme Manufacturing 2024年第4期6卷 86-114页

作者： Aditya Chivate Chi zhou Department of Industrial and Systems Engineering University at BuffaloThe State University of New YorkBuffaloNY 14260United States of America

Over the course of millions of years,nature has evolved to ensure survival and presents us with a myriad of functional surfaces and structures that can boast high efficiency,multifunctionality,and *** makes these surfaces particularly practical and effective is the intricate micropatterning that enables selective interactions with *** of these structures have been realized in the laboratory environment using numerous fabrication techniques by tailoring specific surface *** the available manufacturing methods,additive manufacturing(AM)has created opportunities for fabricating these structures as the complex architectures of the naturally occurring microstructures far exceed the traditional *** paper presents a concise overview of the fundamentals of such patterned microstructured surfaces,their fabrication techniques,and diverse applications.A comprehensive evaluation of micro fabrication methods is conducted,delving into their respective strengths and *** emphasis is placed on AM processes like inkjet printing and micro digital light projection printing due to the intrinsic advantages of these processes to additively fabricate high resolution structures with high fidelity and *** paper explores the various advancements in these processes in relation to their use in microfabrication and also presents the recent trends in applications like the fabrication of microlens arrays,microneedles,and tissue scaffolds.

关键词： additive manufacturing micropatterned surfaces drop-on-demand inkjet DLP printing

The prescribed Gauduchon scalar curvature problem in almost Hermitian geometry

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Science China Mathematics 2024年第10期67卷 2357-2372页

作者： Yuxuan Li Wubin zhou Xianchao zhou School of Mathematical Sciences Tongji UniversityShanghai 200092China Department of Applied Mathematics Zhejiang University of TechnologyHangzhou 310023China

In this paper,we consider the prescribed Gauduchon scalar curvature problem on almost Hermitian *** deducing the expression of the Gauduchon scalar curvature under the conformal variation,we reduce the problem to solving a semi-linear partial differential equation with exponential *** the super-and sub-solutions method,we show that the existence of the solution to this semi-linear equation depends on the sign of a constant associated with the Gauduchon *** the sign is negative,we give both necessary and sufficient conditions such that a prescribed function is the Gauduchon scalar curvature of a conformal Hermitian ***,this paper recovers the Chern-Yamabe problem,the Lichnerowicz-Yamabe problem,and the Bismut-Yamabe problem.

关键词： almost Hermitian manifold Gauduchon connection prescribed scalar curvature problem

Track-before-detect for bistatic radar based on pseudo-spectrum

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Chinese Journal of Aeronautics 2024年第1期37卷 236-246页

作者： Tao HAN Gongjian zhou School of Electronics and Information Engineering Harbin Institute of TechnologyHarbin 150001China Key Laboratory of Marine Environmental Monitoring and Information Processing Ministry of Industry and Information TechnologyHarbin 150001China

Track-Before-Detect(TBD) is an efficient method to detect dim targets for radars. Conventional TBD usually follows an approximate motion model of the target, which may cause an inaccurate integration of the target energy. A TBD technique on basis of pseudo-spectrum in mixed coordinates adopting an accurate motion model for bistatic radar system is developed in this *** predicted position in bistatic polar plane is derived according to a nonlinear function that exactly describes the constant Cartesian velocity motion. Then around the predicted position, a pseudo-spectrum is formulated and its samples are accumulated to the integration frame for energy integration. The evolution of the state and the procedure of accumulation of the target energy are derived elaborately. The superior performance of the proposed method is demonstrated by some simulations.

关键词： Weak target detection Bistatic radar Track-before-detect Pseudo-spectrum Multiframe integration

Effect of CO_(2) Opposing Multiple Jets on Thermoacoustic Instability and NO_(x) Emissions in a Lean-Premixed Model Combustor

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Journal of Thermal Science 2024年第1期33卷 207-221页

作者： zhou Hao HU Liubin Institute for Thermal Power Engineering State Key Laboratory of Clean Energy UtilizationZhejiang UniversityHangzhou 310027China

This paper experimentally studied the effect of CO_(2) opposing multiple jets on the thermoacoustic instability and NO_(x) emissions in a lean-premixed model *** feasibility was verified from three variables:the CO_(2) jet flow rate,hole numbers,and hole diameters of the *** indicate that the control effect of thermoacoustic instability and NO_x emissions show a reverse trend with the increase of open area ratio on the whole,and the optimal jet flow rate range is 1-4 L/min with CO_(2) opposing multiple *** this flow rate range,the amplitude and frequency of the dynamic pressure and heat release signals CH~* basically decrease as the CO_(2) flow rate increases,which avoids high-frequency and high-amplitude thermoacoustic *** amplitude-damped ratio of dynamic pressure and CH*can reach as high as 98.75% and 93.64% with an optimal open area ratio of 3.72%.NO_(x) emissions also decrease as the jet flow rate increases,and the maximum suppression ratio can reach 68.14%.Besides,the flame shape changes from a steep inverted "V" to a more flat "M",and the flame length will become shorter with CO_(2) opposing multiple *** research achieved the synchronous control of thermoacoustic instability and NO_(x) emissions,which could be a design reference for constructing a safer and cleaner combustor.

关键词： thermoacoustic instability lean-premixed model combustor CO_(2)opposing multiple jets open area ratio NO_(x)emissions

Erratum to:Aberrant dynamic functional connectivity of thalamocortical circuitry in major depressive disorder

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2024年第9期25卷 801-802页

作者： Weihao ZHENG Qin ZHANG ziyang ZHAO Pengfei ZHANG Leilei ZHAO Xiaomin WANG Songyu YANG Jing ZHANG Zhijun YAO Bin HU Gansu Provincial Key Laboratory of Wearable Computing School of Information Science and EngineeringLanzhou UniversityLanzhou730000China Second Clinical School Lanzhou UniversityLanzhou730030China Department of Magnetic Resonance Lanzhou University Second HospitalLanzhou730030China Gansu Province Clinical Research Center for Functional and Molecular Imaging Lanzhou730030China School of Medical Technology Beijing Institute of TechnologyBeijing100081China CAS Center for Excellence in Brain Science and Intelligence Technology Shanghai Institutes for Biological SciencesChinese Academy of SciencesShanghai200031China Joint Research Center for Cognitive Neurosensor Technology of Lanzhou University&Institute of Semiconductors Chinese Academy of SciencesLanzhou730000China

The article(Zheng et al.,2024)unfortunately contained a mistake:in Table 3,four"I"elements in the last"LF in thalamus"column are *** four arrows should be"↑"in the following correctversion of Table3.

关键词： connectivity mistake dynamic

Co-alteration of Myc and RTK-RAS pathways defines a liver-metastatic propensity and immune-cold subgroup of pancreatic adenocarcinoma

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Genes & Diseases 2024年第3期11卷 47-50页

作者： Yuyuan Zhang ziyang Zu Hui Xu Siyuan Weng Yuqing Ren Quan Cheng Peng Luo Jian Zhang Zaoqu Liu Xinwei Han Department of Interventional Radiology The First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan450052China Interventional Institute of Zhengzhou University ZhengzhouHenan450052China Interventional Treatment and Clinical Research Center of Henan Province ZhengzhouHenan 450052China Department of Hepatobiliary and Pancreatic Surgery The First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan 450052China Department of Respiratory and Critical Care Medicine The First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan450052China Department of Neurosurgery Xiangya HospitalCentral South UniversityChangshaHunan 410008China Department of Oncology Zhujiang HospitalSouthern Medical UniversityGuangzhouGuangdong 510280China

Co-altered pathways refer to the phenomenon where multiple biological pathways exhibit aberrant changes simultaneously within the same tumor *** phenomenon can facilitate a better understanding of the mechanism and evolution of tumors and serve as a biological marker for diagnosing,classifying,and treating tumors.1 However,the nature of alteration occurrence and the impact on pancreatic adenocarcinoma(PAAD)remain *** SELECT algorithm was originally designed to systematically assess the evolutionary dependencies and their impact between altered genes in cancer for anticipating drug resistance and proposing alternative ***,to better characterize the etiology of PAAD and develop an improved risk assessment strategy,2 by utilizing SELECT,we identified a co-altered pathway subgroup of PAAD that demonstrated an elevated risk for unfavorable prognosis,a propensity for liver metastasis,and an immunologically cold microenvironment.

关键词： adenocarcinoma elevated alteration

Study on Pine Wilt Disease Symptom Development in Highly Sensitive Pinus massoniana Seedlings Caused by Bursaphelenchus xylophilus

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Study on Pine Wilt Disease Symptom Development in Highly Sen...

Design of integral sliding mode guidance law based on disturbance observer

中国植物病理学会2023年学术年会

作者： LI Xingxing ZHENG Lijun WANG Xinrong YE Wenhua WANG Yan LIU Songsong Waqar Ahmed MD Kamaruzzaman zhou ziyang CHEN Bingjia College of Plant Protection South China Agricultural University

Pine Wilt Disease( PWD) has caused serious losses to pine trees production *** massoniana which is the key widely species for construction of ecological civilization in *** unique and important economic value of *** plays an irreplaceable role in the process of poverty alleviation and rural rejuvenation in ***, in recent years, PWD has caused heavy loss in the *** ecological forests in 17 provinces across *** present, the cost of preventing and controlling PWD is *** main reason is that the pathogenesis of PWD has not been elucidated, so it is difficult to design its targeted precise prevention and control *** sensitive *** is a necessary material to reveal the pathogenesis of *** the highly sensitive pine dies after inoculated with PWN, and the potential highly sensitive PWD one could not be identified till today, which makes it impossible to carry out in-depth research on the pathogenesis of ***, it is urgent to establish the rapid PWD screening technology of PWD in *** study revealed the symptom development and PWN number change of highly-sensitive *** of *** main innovative achievements are as follows:( 1) The PWD symptom development of highly sensitive seedlings of *** in different ages were *** artificial inoculation PWN method was carried on semi-annual, one-and-a-halfyear, two-and-a-half-year, and f our-year-old *** *** was found that all the highly sensitive plants would die after the onset of the disease, but the symptom development process were *** PWD symptom on highly sensitive half-year *** seedlings occurred on the5 th day after inoculation, and the symptoms expanded rapidly, the whole plant withered and died within4 *** PWD symptom on highly sensitive one and a half year, two and a half years, and four years old *** seedlings began on the 8 th, 10 th, and

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Journal of Systems Engineering and Electronics 2024年第1期35卷 186-194页

作者： zhou Jianping ZHANG Wenjie zhou Hang LI Qiang XIA Qunli School of Aerospace Engineering Beijing Institute of TechnologyBeijing 100081China School of Informatic Engineering Mianyang Techers’CollegeMianyang 62100China Beijing Institute of Electronic System Engineering Beijing 100854China Beijing Institute of Space Long March Vehicle Beijing 100076China

With the increasing precision of guidance,the impact of autopilot dynamic characteristics and target maneuvering abilities on precision guidance is becoming more and more *** order to reduce or even eliminate the autopilot dynamic operation and the target maneuvering influence,this paper suggests a guidance system model involving a novel integral sliding mode guidance law(ISMGL).The method utilizes the dynamic characteristics and the impact angle,combined with a sliding mode surface scheme that includes the desired line-ofsight angle,line-of-sight angular rate,and second-order differential of the angular *** the same time,the evaluation scenario considere the target maneuvering in the system as the external disturbance,and the non-homogeneous disturbance observer estimate the target maneuvering as a compensation of the guidance *** proposed system’s stability is proven based on the Lyapunov stability *** simulations reveale that ISMGL effectively intercepted large maneuvering targets and present a smaller miss-distance compared with traditional linear sliding mode guidance laws and trajectory shaping guidance ***,ISMGL has a more accurate impact angle and fast convergence speed.

关键词： disturbance observer pilot dynamics integral sliding mode impact angle constraint maneuvering target

Physical and numerical investigations of target stratum selection for ground hydraulic fracturing of multiple hard roofs

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International Journal of Mining Science and Technology 2024年第5期34卷 699-712页

作者： Binwei Xia Yanmin zhou Xingguo Zhang Lei zhou Zikun Ma State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing UniversityChongqing 400044China School of Resources and Safety Engineering Chongqing UniversityChongqing 400044China

Ground hydraulic fracturing plays a crucial role in controlling the far-field hard roof,making it imperative to identify the most suitable target stratum for effective *** experiments are conducted based on engineering properties to simulate the gradual collapse of the roof during longwall top coal caving(LTCC).A numerical model is established using the material point method(MPM)and the strain-softening damage constitutive model according to the structure of the physical *** simulations are conducted to analyze the LTCC process under different hard roofs for ground hydraulic *** results show that ground hydraulic fracturing releases the energy and stress of the target stratum,resulting in a substantial lag in the fracturing of the overburden before collapse occurs in the hydraulic fracturing *** hydraulic fracturing of a low hard roof reduces the lag effect of hydraulic fractures,dissipates the energy consumed by the fracture of the hard roof,and reduces the abutment ***,it is advisable to prioritize the selection of the lower hard roof as the target stratum.

关键词： Target stratum selection Ground hydraulic fracturing Hard roof control Fracture network Material point method