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Seismic response analysis of damper-connected adjacent structures with stochastic parameters

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2010年第6期11卷 402-414页

作者： dong-dong ge Hong-ping ZHU Dan-sheng WANG Min-shui HUANG School of Civil Engineering and Mechanics Huazhong University of Seience and Technology Wuhan 430074 China Hubei Key Laboratory of Control Structure Huazhong University of Science and Technology Wuhan 430074 China Transportation Research Center Wuhan Institute of Technology Wuhan 430073 China

Dynamic response analysis of damper connected adjacent multi-story structures with uncertain parameters is carried out.A formula of the multi degree of freedom(MDOF) for the structure-damper system with stochastic parameters is *** uncertainties of mass and stiffness are taken into consideration *** ground acceleration is represented by Kanai-Tajimi filtered non-stationary *** mean square random responses of structural displacement and story drift are chosen as the optimization *** variations of mean square responses of top floor displacements and bottom story drifts in neighboring structures with the damper stiffness and damping coefficient are analyzed in *** the parametric study,the acquiring optimum parameters of damper are regarded as numerical ***,a reducing order model of the MDOF system for adjacent structures with mean parameters is *** explicit expressions for determining optimal parameters of Kelvin model-defined damper which is used to connect adjacent single degree of freedom(SDOF) structures subjected to a white-noise excitation are employed to achieve the appropriate damper parameters,which are called theory *** a comparative study,it can be found that the theory values of damper parameters are consistent with the results based on extensive parametric *** analytical results can be obtained by using the first natural frequencies and the total mass of the adjacent deterministic structures with mean *** analytical formulas can be used to find appropriate parameters of damper between adjacent structures for engineering *** performance of damper is investigated on the basis of mitigations of mean square random responses of inter-story drifts,displacements and accelerations in adjacent *** numerical results demonstrate the robustness of coupled building control strategies.

关键词： Adjacent structures Passive control Stochastic parameters Seismic response

New Exact Travelling Wave Solutions for Zakharov-Kuznetsov Equation

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Communications in Theoretical Physics 2009年第4期51卷 609-612页

作者： MA Hong-Cai YU Yao-dong ge dong-Jie Department of Applied Mathematics College of Science Donghua University Shanghai 201620 China

In this paper, the nonlinear dispersive Zakharov- Kuznetsov equation is solved by using the generalized auxiliary equation method. As a result, new solitary pattern, solitary wave and singular solitary wave solutions ... 详细信息

关键词： Zakharov Kuznetsov equation auxiliary equation method exact solutions

An Improved Algorithm for Fixed-Hub Single Allocation Problems

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Journal of the Operations Research Society of China 2017年第3期5卷 319-332页

作者： dong-dong ge Zi-Zhuo Wang Lai Wei Jia-Wei Zhang School of Information Management and Engineering Shanghai University of Finance and EconomicsShanghai 200433China Department of Industrial and Systems Engineering University of MinnesotaMinneapolisMN 55455USA Stephen M.Ross School of Business University of MichiganAnn ArborMI 48109USA Leonard N.Stern School of Business New York UniversityNew YorkNY 10012USA

This paper discusses the fixed-hub single allocation problem(FHSAP).In this problem,a network consists of hub nodes and terminal *** are fixed and fully connected;each terminal node is assigned to a single hub which routes all its *** goal is to minimize the cost of routing the traffic in the *** this paper,we propose a new linear programming(LP)relaxation for this problem by incorporating a set of validity constraints into the classical formulations by Ernst and Krishnamoorthy(Locat Sci 4:139–154,Ann Op Res 86:141–159).A geometric rounding algorithm is then used to obtain an integral solution from the fractional *** show that by incorporating the validity constraints,the strengthened LP often provides much tighter upper bounds than the previous methods with a little more computational effort and the solution obtained often has a much smaller gap with the optimal *** also formulate a robust version of the FHSAP and show that it can guard against data uncertainty with little costs.

关键词： Hub location Network design Linear programming Worst-case analysis

Optimization and Operations Research in Mitigation of a Pandemic

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Journal of the Operations Research Society of China 2022年第2期10卷 289-304页

作者： Cai-Hua Chen Yu-Hang Du dong-dong ge Lin Lei Yin-Yu Ye School of Management and Engineering Nanjing UniversityNanjing 210008JiangsuChina School of Information Management and Engineering Shanghai University of Finance and EconomicsShanghai 200433China Department of Management Science and Engineering Stanford UniversityStanfordCA 9430USA

The pandemic of COVID-19 initiated in 2019 and spread all over the world in 2020 has caused significant damages to the human society,making troubles to all aspects of our daily *** the serious outbreak of the virus,we consider possible solutions from the perspectives of both governments and ***,this paper discusses several applications of supply chain management,public resource allocation,and pandemic prevention using optimization and machine learning *** useful insights in mitigating the pandemic and economy reopening are provided at the end of this *** insights might help governments to reduce the severity of the current pandemic and prevent the next round of *** may also improve companies'reactions to the increasing uncertainties appearing in the business *** the coronavirus imposes challenges to the entire society at the moment,we are confident to develop new techniques to prevent and eradicate the disease.

关键词： Pandemic Operation research Optimization Machine learning

Preface:Special Issue on Optimization Algorithms and Applications

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Journal of the Operations Research Society of China 2019年第1期7卷 1-3页

作者： dong-dong ge Zai-Wen Wen Ya-Xiang Yuan Shanghai University of Finance and Economics Shanghai 200433China Beijing International Center for Mathematical Research Beijing 100871China Chinese Academy of Sciences Beijing 100190China

Optimization is one of the fundamental and essential components of operations research,a highly interdisciplinary *** one of the first researchers of the interior-point methods,Professor Yin-Yu Ye is responsible not only for developing many fundamental results,which have tremendously advanced the optimization theory,but also for enriching the field by applications emerging from statistics,machine learning,signal and imaging processing,communications,computational economics and *** methods and theory using semidefinite programming have been demonstrated to be helpful for the localization of network *** computational economics,new complexity results have been established for problems related to the computation of an economic *** appreciate Ye for his insatiable curiosity,openness to new ideas and a keen interest in the success of young people in our field of operations research.

关键词： operations interior programming

Carbonic anhydrase-like enzymes in the formation of Lycopodium alkaloid

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Chinese Journal of Natural Medicines 2024年第3期22卷 193-194页

作者： dong Huiwen ge Huiming State key Laboratory of Pharmaceutical Biotechnology Institute of Functional BiomoleculesSchool of Life SciencesNanjing UniversityNanjing 210023China

Plant alkaloids,renowned for their structural diversity and bioactivity,are prominent in both modern and traditional medicine[1].Unraveling the intricacies of plant alkaloid biosynthesis could pave the way for the discovery of new natural products and *** may also shed light on the roles of existing pathways in host biology and provide valuable tools for metabolic engineering in plants and microbes[2].Unlike other major classes of plant natural products,such as terpenoids and polyketides,the formation of alkaloid scaffolds does not conform to a uniform chemical theme or depend on a singular enzyme class[3].A case in point is the Lycopodium alkaloids in the Lycopodiaceae family,where the enzymes responsible for their core scaffold construction remain unidentified[4].

关键词： Lycopodium alkaloid Carbonic anhydrase-like enzymes Biosynthesis

EG-STC: An Efficient Secure Two-Party Computation Scheme Based on Embedded GPU for Artificial Intelligence Systems

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Computers, Materials & Continua 2024年第6期79卷 4021-4044页

作者： Zhenjiang dong Xin ge Yuehua Huang Jiankuo dong Jiang Xu School of Computer Science Nanjing University of Posts and TelecommunicationsNanjing210023China School of Computer Nanjing University of Information Science and TechnologyNanjing210044China

This paper presents a comprehensive exploration into the integration of Internet of Things(IoT),big data analysis,cloud computing,and Artificial Intelligence(AI),which has led to an unprecedented era of *** delve into the emerging trend of machine learning on embedded devices,enabling tasks in resource-limited ***,the widespread adoption of machine learning raises significant privacy concerns,necessitating the development of privacy-preserving *** such technique,secure multi-party computation(MPC),allows collaborative computations without exposing private *** its potential,complex protocols and communication interactions hinder performance,especially on resource-constrained *** to enhance efficiency have been made,but scalability remains a *** the success of GPUs in deep learning,lever-aging embedded GPUs,such as those offered by NVIDIA,emerges as a promising ***,we propose an Embedded GPU-based Secure Two-party Computation(EG-STC)framework for Artificial Intelligence(AI)*** the best of our knowledge,this work represents the first endeavor to fully implement machine learning model training based on secure two-party computing on the Embedded GPU *** experimental results demonstrate the effectiveness of *** an embedded GPU with a power draw of 5 W,our implementation achieved a secure two-party matrix multiplication throughput of 5881.5 kilo-operations per millisecond(kops/ms),with an energy efficiency ratio of 1176.3 kops/ms/***,leveraging our EG-STC framework,we achieved an overall time acceleration ratio of 5–6 times compared to solutions running on server-grade *** solution also exhibited a reduced runtime,requiring only 60%to 70%of the runtime of previously best-known methods on the same *** summary,our research contributes to the advancement of secure and efficient machine learning implementations on resource-constrained embedded

关键词： Secure two-party computation embedded GPU acceleration privacy-preserving machine learning edge computing

Immune regulation of the gut-brain axis and lung-brain axis involved in ischemic stroke

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Neural Regeneration Research 2024年第3期19卷 519-528页

作者： Xiaodi Xie Lei Wang Shanshan dong ShanChun ge Ting Zhu Institute of Neuroregeneration&Neurorehabilitation Department of PathophysiologySchool of Basic MedicineQingdao UniversityQingdaoShandong ProvinceChina School of Traditional Chinese Pharmacy China Pharmaceutical UniversityNanjingJiangsu ProvinceChina Department of Rehabilitation Medicine The Affiliated Hospital of Qingdao UniversityQingdaoShandong ProvinceChina

Local ischemia often causes a series of inflammatory reactions when both brain immune cells and the peripheral immune response are *** the human body,the gut and lung are regarded as the key reactional targets that are initiated by brain ischemic *** microorganisms play an important role in immune regulation and metabolism and affect blood-brain barrier *** addition to the relationship between peripheral organs and central areas and the intestine and lung also interact among each ***,we review the molecular and cellular immune mechanisms involved in the pathways of inflammation across the gut-brain axis and lung-brain *** found that abnormal intestinal flora,the intestinal microenvironment,lung infection,chronic diseases,and mechanical ventilation can worsen the outcome of ischemic *** review also introduces the influence of the brain on the gut and lungs after stroke,highlighting the bidirectional feedback effect among the gut,lungs,and brain.

关键词： enteric glia cells gut microbiota gut-brain axis immune response inflammation ischemic stroke lung-brain axis microglia

Quick Hosting Capacity Evaluation Based on Distributed Dispatching for Smart Distribution Network Planning with Distributed generation

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Journal of Modern Power Systems and Clean Energy 2024年第1期12卷 128-140页

作者： Bing Sun Ruipeng Jing Leijiao ge Yuan Zeng Shimeng dong Luyang Hou the School of Electrical and Information Engineering Tianjin UniversityTianjin 300072China State Grid Corporation of China BeijingChina the School of Computer Science(National Pilot Software Engineering School) Beijing University of Posts and TelecommunicationsBeijingChina

The smart distribution network(SDN)is integrat ing increasing distributed generation(DG)and energy storage(ES).Hosting capacity evaluation is important for SDN plan ning with *** and ES are usually invested by users or a third party,and they may form friendly microgrids(MGs)and operate *** centralized dispatching meth od no longer suits for hosting capacity evaluation of SDN.A quick hosting capacity evaluation method based on distributed optimal dispatching is ***,a multi-objective DG hosting capacity evaluation model is established,and the host ing capacity for DG is determined by the optimal DG planning *** steady-state security region method is applied to speed up the solving process of the DG hosting capacity evalua tion ***,the optimal dispatching models are estab lished for MG and SDN respectively to realize the operating *** the distributed dispatching strategy,the dual-side optimal operation of SDN-MGs can be realized by several iterations of power exchange ***,an SDN with four MGs is conducted considering multiple flexible *** shows that the DG hosting capacity of SDN oversteps the sum of the maximum active power demand and the rated branch ***,the annual DG electricity oversteps the maximum active power demand value.

关键词： Smart distribution network(SDN) microgrid hosting capacity multi-objective optimization distributed opti mal dispatching flexible resource