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Energy-based modeling and control for grid-side converter of doubly fed wind generator

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控制理论与应用（英文版） 2012年第4期10卷 435-440页

作者： huihui song Yanbin QU School of Information Science and Engineering Harbin Institute of Technology at Weihai

To avoid dealing with the zero dynamics limitation brought by the bidirectional power flow through the back-to-back converter in a doubly fed wind generator, a new energy-based modeling and control approach for the grid- side converter is presented. During the modeling process, the grid-side converter is divided into two subsystems with the feedback interconnection structure, and the interactive matrix of the model takes into account the concrete port structure. Then, an energy-based controller is proposed to realize the grid-side control objectives based on the new model. Simulation studies are carried out in MATLAB/Simulink. Comparative results between the proportional-integral controller and the energy-based controller show that the latter one can obtain faster convergence rate and global stability as the load current varies. Moreover, the energy-based controller is also competent for grid-side control when simulated in a 2 MW wind energy conversion system with random wind.

关键词： Wind energy Grid-side converter Energy-based control Port-controlled Hamilton

Financing the price-setting newsvendor with sales effort

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Journal of Management Analytics 2020年第4期7卷 564-590页

作者： Wen Ding huihui song Antai College of Economics&Management Shanghai Jiao Tong UniversityShanghaiPeople’s Republic of China

In this paper,we consider the financing issues in a supply chain where the capitalconstrained retailer should use limited funds to pay for both order and *** retailer decides the retail price,order quantity exante and sales effort expost,and he supports these operational activities by two financing sources:bank loan and trade *** illustrate that in this two-stage problem,the price-setting retailer’s equilibrium sales effort and retail price are both related to the market realization value and the retailer’s cash *** two financing sources are both able to stimulate the retailer to promote *** the retailer’s cash level is reasonably high,both parties(supplier and retailer)benefit from trade *** contrast,if the retailer’s cash level is low,trade credit may discourage the retailer from sales ***,our study shows that the retailer spends more on sales when the market is good than when it is bad.

关键词： Capital-constrained retailer sales effort trade credit bank loan pricesetting

Intellectual property protection for deep semantic segmentation models

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Frontiers of Computer Science 2023年第1期17卷 113-121页

作者： Hongjia RUAN huihui song Bo LIU Yong CHENG Qingshan LIU B-DAT CICAEETNanjing University of Information Science&TechnologyNanjing 211800China JD Finance America Corporation Mountain View 94089USA

Deep neural networks have achieved great success in varieties of artificial intelligent fields. Since training a good deep model is often challenging and costly, such deep models are of great value and even the key commercial intellectual properties. Recently, deep model intellectual property protection has drawn great attention from both academia and industry, and numerous works have been proposed. However, most of them focus on the classification task. In this paper, we present the first attempt at protecting deep semantic segmentation models from potential infringements. In details, we design a new hybrid intellectual property protection framework by combining the trigger-set based and passport based watermarking simultaneously. Within it, the trigger-set based watermarking mechanism aims to force the network output copyright watermarks for a pre-defined trigger image set, which enables black-box remote ownership verification. And the passport based watermarking mechanism is to eliminate the ambiguity attack risk of trigger-set based watermarking by adding an extra passport layer into the target model. Through extensive experiments, the proposed framework not only demonstrates its effectiveness upon existing segmentation models, but also shows strong robustness to different attack techniques.

关键词： deep neural networks intellectual property protection trigger-set passport layer

Conjoint analysis of crowbar switching scheme and its resistancebased on statistical sampling for LVRT of DFIG

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Journal of Modern Power Systems and Clean Energy 2019年第3期7卷 558-567页

作者： Yanbin QU Le GAO Guangfu MA huihui song Shitao WANG School of Information and Electrical Engineering Harbin Institute of Technology at WeihaiNo.2West Wenhua RoadWeihai 264209China Department of Control Science and Engineering Harbin Institute of TechnologyNo.92West Dazhi StreetNangang DistrictHarbin 150001China State Grid of China Technology College No.500ErhuanSouth RdJinanChina

An active crowbar protective circuit is an effective and common approach for low voltage ride through(LVRT) of a doubly-fed induction generator(DFIG). The crowbar resistance value and its switching scheme both have crucial effects on safety recovery. The effects encountered are correlative dependence and interplay so that analyzing them from a single factor, as most existing LVRT control methods would do, obtains a partial optimal solution. This paper combines these two factors toanalyze their coordination effects on the LVRT control,and to also investigate whether the global optimal performance of these factors can be achieved. The principles for resistance selection and the schemes for crowbar switching are discussed first. Next, the coupling relationship is ana-lyzed based on statistical sampling simulation data with different resistance values and various switching *** results demonstrate that their coordination has critical influence on rotor peak current, DC-link voltage and reactive power. The optimal coordination will be different according to specific requirements. Hence the global optimal combination could be achieved when all requirements are taken into consideration.

关键词： Doubly-fed induction generator(DFIG) Active crowbar Switching scheme Resistance value Statistical sampling data

Real-time manifold regularized context-aware correlation tracking

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Frontiers of Computer Science 2020年第2期14卷 334-348页

作者： Jiaqing FAN huihui song Kaihua ZHANG Qingshan LIU Fei YAN Wei LIAN Jiangsu Key Laboratory of Big Data Analysis Technology(B-DAT) Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology(CICAEET)Nanjing University of Information Science&TechnologyNanjing 211800China Department of Computer Science Changzhi UniversityChangzhi 046011China

Despite the demonstrated success of numerous correlation filter(CF)based tracking approaches,their assumption of circulant structure of samples introduces significant redundancy to learn an effective *** this paper,we develop a fast manifold regularized context-aware correlation tracking algorithm that mines the local manifold structure information of different types of ***,different from the traditional CF based tracking that only uses one base sample,we employ a set of contextual samples near to the base sample,and impose a manifold structure assumption on ***,to take into account the manifold structure among these samples,we introduce a linear graph Laplacian regularized term into the objective of CF ***,the optimization can be efficiently solved in a closed form with fast Fourier transforms(FFTs),which contributes to a highly efficient *** evaluations on the OTB100 and VOT2016 datasets demonstrate that the proposed tracker performs favorably against several state-of-the-art algorithms in terms of accuracy and ***,our tracker is able to run in real-time with 28 fps on a single CPU.

关键词： visual tracking manifold regularization correlation filter graph Laplacian

Two-component system GacS/GacA,a global response regulator of bacterial physiological behaviors

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Engineering Microbiology 2023年第1期3卷 37-48页

作者： huihui song Yuying Li Yan Wang College of Marine Life Sciences Ocean University of ChinaQingdao 266003China Laboratory for Marine Ecology and Environmental Science Qingdao National Laboratory for Marine Science and TechnologyQingdao 266071China Institute of Evolution and Marine Biodiversity Ocean University of ChinaQingdao 266003China

The signal transduction system of microorganisms helps them adapt to changes in their complex living ***-component system(TCS)is a representative signal transduction system that plays a crucial role in regulating cellular communication and secondary *** Gram-negative bacteria,an unorthodox TCS consist-ing of histidine kinase protein GacS(initially called LemA)and response regulatory protein GacA is *** mainly regulates various physiological activities and behaviors of bacteria,such as quorum sensing,secondary metabolism,biofilm formation and motility,through the Gac/Rsm(Regulator of secondary metabolism)signaling cascade *** global regulatory ability of GacS/GacA in cell physiological activities makes it a potential research entry point for developing natural products and addressing antibiotic *** this review,we summarize the progress of research on GacS/GacA from various perspectives,including the reaction mechanism,related regulatory pathways,main functions and GacS/GacA-mediated ***,this review will facilitate further research on GacS/GacA and promote its application in regulating secondary metabolism and as a therapeutic target.

关键词： GacS/GacA Two-component system Signaling regulatory network Secondary metabolite Antibiotic resistance

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猪源性肠球菌耐药性与抗锌性的相关性

福建农林大学学报（自然科学版） 2025年第1期54卷 100-109页

作者：宋辉辉孙志华洪娟赖华敏任子宁易灵娴林欣俞道进福建农林大学动物科学学院/中西兽医结合与动物保健福建省高等学校重点实验室福建福州350002

【目的】了解猪源性肠球菌的耐药性及肠球菌对重金属锌抗性的现状,探究耐药基因和锌抗性基因的流行特征及其之间的相关性,为后期养殖临床上抗菌药物和ZnO的使用提供参考。【方法】采集了395份猪粪便样品,使用特异性选择培养基分离肠球菌... 详细信息

【目的】了解猪源性肠球菌的耐药性及肠球菌对重金属锌抗性的现状,探究耐药基因和锌抗性基因的流行特征及其之间的相关性,为后期养殖临床上抗菌药物和ZnO的使用提供参考。【方法】采集了395份猪粪便样品,使用特异性选择培养基分离肠球菌,采用微量肉汤稀释法测定肠球菌分离株对9种抗菌药物和ZnSO4的敏感性,并采用PCR检测耐药基因和锌抗性基因。【结果】共分离出348株肠球菌,分离率为88.10%。药物敏感性检测结果显示:肠球菌对红霉素的耐药率最高,达96.81%,对万古霉素耐药率最低,仅为0.71%。对锌敏感性的检测结果显示,对ZnSO4的最小抑菌浓度(MIC)≥12 mmol·L^(-1)的肠球菌占52.13%。多重耐药性检测结果显示,肠球菌四重耐药占比最高,为31.91%。PCR检测结果显示,锌抗性基因zntA的检出率为37.93%,DNA旋转酶A亚单位基因gyrA的检出率为92.79%,大环内酯类耐药基因mefA的检出率仅为0.31%。相关性分析显示,锌抗性基因与核糖体保护蛋白编码基因tetS、四环素外排基因tetL呈显著正相关(P<0.05),与四环素外排基因tetG呈显著负相关(P<0.05),与gyrA、核糖体甲基化酶基因ermB呈负相关。【结论】重金属锌可能诱导猪肠道肠球菌的耐药以及多重耐药表型的出现,且抗菌药物可能会影响猪粪便中肠球菌的抗锌性。

关键词：猪源肠球菌耐药性耐药基因抗锌性氧化锌

Mutations in EZH2 are associated with poor prognosis for patients with myeloid neoplasms

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Genes & Diseases 2019年第3期6卷 276-281页

作者： Qi Zhang Qi Han Jie Zi Jinlong Ma huihui song Yulu Tian Mary McGrath Chunhua song Zheng Ge Department of Hematology Zhongda Hospital Southeast UniversityInstitute of Hematology Southeast UniversityNanjing 210009China Department of Pediatrics Pennsylvania State University College of MedicineHersheyPA 17033USA

EZH2 is a component of the polycomb repressive complex 2(PRC2),which is a highly conserved histone methyltransferase that methylates lysine 27 of histone ***2 mutations are associated with oncogenesis and progression of ***,the relationship between the clinical outcome of patients with myeloid malignancies and EZH2 mutations is ***,we performed a meta-analysis of 8 studies(n Z 2243 patients)that evaluates the correlation between EZH2 mutations and overall survival(OS)in patients with myeloid ***2 mutations were associated with significantly worse OS(hazard ratio[HR]Z 2.37,95%confidential interval(CI),1.48e3.79).In a word,EZH2 mutations indicate a poor prognosis for patients with myeloid neoplasms.

关键词： EZH2 Meta-analysis Mutations Myeloid neoplasms Prognostic

基于技术接受度模型的模块化服装使用意愿分析

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纺织学报 2023年第10期44卷 157-163页

作者：宋慧慧卢业虎苏州大学纺织与服装工程学院江苏苏州215006 南通纺织丝绸产业技术研究院江苏南通226300

模块化服装以其可拆卸可重组的特性成为服装向可持续设计绿色低碳转型的重要形式,针对目前对于模块化服装的研究主要集中于设计方法的探索,缺乏有关影响用户对模块化服装使用与态度因素的研究。基于技术接受度模型,引入服装功能性作为... 详细信息

模块化服装以其可拆卸可重组的特性成为服装向可持续设计绿色低碳转型的重要形式,针对目前对于模块化服装的研究主要集中于设计方法的探索,缺乏有关影响用户对模块化服装使用与态度因素的研究。基于技术接受度模型,引入服装功能性作为外部变量,构建模块化服装用户使用意愿模型并提出7个假设,使用问卷星软件对141名18~26岁的青年进行问卷调查,通过SPSS软件检验数据的信度与效度,经信度与效度检验合格后,通过AMOS软件结合结构方程模型对数据进行模型适配度分析及假设检验。研究结果表明:模块化服装的功能性对感知有用性和感知易用性均有显著正向影响且影响较大(P<0.001);感知有用性对使用态度具有显著正向影响(P<0.001);模块化服装的感知易用性对感知有用性具有显著正向影响(P<0.001);模块化服装的使用态度对行为意向具有显著正向影响(P<0.001),提高模块化服装的功能性、感知有用性及感知易用性可增加用户对模块化服装的使用意愿;模块化服装在设计时可将风格倾向休闲运动方向,并重点考虑颜色搭配。

关键词：技术接受度模型模块化服装使用意愿结构方程模型可持续设计