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Stability and Stabilization of Sampled-Data based LFC for Power Systems:A Data-Driven Method

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IEEE/CAA Journal of Automatica Sinica 2025年第1期 291-293页

作者： Yu-Long fan Chuan-Ke Zhang Yong He the School of Automation China University of Geosciences the Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems the Engineering research Center of Intelligent Technology for Geo-Exploration Ministry of Education IEEE

Dear Editor,This letter is concerned with stability analysis and stabilization design for sampled-data based load frequency control(LFC) systems via a data-driven method. by descr.b.ng the dynamic behavior of LFC systems based on a data-based representation, a stability criterion is derived to obtain the admissible maximum sampling interval(MSI) for a given controller and a design condition of the PI-type controller is further developed to meet the required MSI. Finally, the effectiveness of the proposed methods is verified by a case study.

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Visualization of the protective role of estrogen against female liver fibrosis via an Er viscosity NIr fluorescent pr.b.

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作者： (美)r.b.基伊王士fan译

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Science China Chemistry 2025年第1期 360-368页

作者： Zheng Liu Changyu Zhang Zipeng Li Wanying Ma Jia Liu Xiang Xia Ning Xu Wen Sun Jianjun Du Jiangli fan Xiaojun Peng State Key Laboratory of Fine Chemicals Dalian University of Technology Ningbo Institute of Dalian University of Technology

Endoplasmic reticulum(Er) viscosity has emerged as a new potential biomarker for hepatic fibrosis(HF). Herein, we report the first Er-targeting viscosity-responsive near-infrared(NIr) fluorescent pr.b. HbT-PP for investigations of HF *** twisted intramolecular charge transfer(TICT) and the excited state intramolecular proton transfer(ESIPT) are combined to endow HbT-PP with the selective response towards viscosity(～62-fold) and a super large stokes shift(～320 nm). HbT-PP mainly targets organelle Er and is able to image the drug-or alcohol-induced viscosity elevation in living cells. Significantly,HbT-PP was successfully applied to visualize the gender difference in HF and the protective role of estrogen in restraining HF progression. Of note, after 10 min of stain with HbT-PP, HF lesions showed a stage-based response, indicating the potential of this pr.b. in fast and early diagnosis of HF. These results clearly demonstrated the promising application of HbT-PP as a new tool for exploring Er viscosity-involved physiological and pathological processes.

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Measuring,processing,and generating partially coherent light with self-configuring optics

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Light(Science & Applications) 2024年第11期13卷 2726-2733页

作者： Charles roques-Carmes Shanhui fan David A.b.Miller 1E.L.Ginzton Laboratory Stanford University348 Via PuebloStanfordCA 94305USA

Optical phenomena always display some degree of partial coherence between their respective degrees of *** coherence is of particular interest in multimodal systems,where classical and quantum correlations between spatial,polarization,and spectral degrees of freedom can lead to fascinating phenomena(e.g.,entanglement)and be leveraged for advanced imaging and sensing modalities(e.g.,in hyperspectral,polarization,and ghost imaging).Here,we present a universal method to analyze,process,and generate spatially partially coherent light in multimode systems by using self-configuring optical *** method relies on cascaded self-configuring layers whose average power outputs are sequentially *** optimized,the network separates the input light into its mutually incoherent components,which is formally equivalent to a diagonalization of the input density *** illustrate our method with numerical simulations of Mach-Zehnder interferometer arrays and show how this method can be used to perform partially coherent environmental light sensing,generation of multimode partially coherent light with arbitrary coherency matrices,and unscrambling of quantum optical *** provide guidelines for the experimental realization of this method,including the influence of losses,paving the way for self-configuring photonic devices that can automatically learn optimal modal representations of partially coherent light fields.

关键词： coherent modal generating

resistance to receptor tyrosine kinase inhibition in cancer： molecular mechanisms and therapeutic strategies

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Frontiers of Medicine 2015年第2期9卷 134-138页

作者： Peter.b. Alexander Xiao-fan Wang Department of Pharmacology and Cancer.b.ology Duke University Medical Center Durham NC 27710 USA

Drug resistance is a major factor that limits the efficacy of targeted cancer therapies. In this review, we discuss the main known mechanisms of resistance to receptor tyrosine kinase inhibitors, which are the most prevalent class of targeted therapeutic agent in current clinical use. Here we focus on bypass track resistance, which involves the activation of alternate signaling molecules by tumor cells to bypass inhibition and maintain signaling output, and consider the pr.b.ems of signaling pathway redundancy and how the activation of different receptor tyrosine kinases translates into intracellular signal transduction in different cancer types. This information is presented in the context of research strategies for the discovery of new targets for pharmacological intervention, with the goal of overcoming resistance in order to improve patient outcomes.

关键词： targeted therapy drug resistance receptor tyrosine kinases cancer

Are hyoliths Palaeozoic lophophorates?

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National Science review 2020年第2期7卷 453-469页

作者： fan Liu Christian b Skovsted Timothy P Topper Zhifei Zhang Degan Shu State Key Laboratory of Continental Dynamics Shaanxi Key Laboratory of Early Life and Environments Department of Geology Northwest University Department of Palaeobiology Swedish Museum of Natural History

The phylogenetic position of hyoliths has long been unsettled, with recent discoveries of a tentaculate feeding apparatus(‘lophophore’) and fleshy apical extensions from the shell(‘pedicle’) suggesting a lophophorate affinity. Here, we descr.b. the first soft parts associated with the feeding apparatus of an orthothecid hyolith, Triplicatella opimus from the Chengjiang biota of South China. The tuft-like arrangement of the tentacles of T. opimus differs from that of hyolithids, suggesting they collected food directly from the substrate. A reassessment of the feeding organ in hyolithids indicates that it does not represent a lophophore and our analysis of the apical structures associated with some orthothecids show that these represent crushed portions of the shell and are not compar.b.e to the brachiopod pedicle. The new information suggests that hyoliths are more likely to be basal members of the lophotrochozoans rather than lophophorates closely linked with the Phylum brachiopoda.

关键词： orthothecid the Chengjiang Lagerst¨atte Cambrian soft parts lophophore

Simultaneous Multi-Wavelength Observations of the TeV blazar Mrk 421 during February-March,2003:X-ray and NIr Correlated Variability

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Chinese Journal of Astronomy and Astrophysics 2008年第4期8卷 395-403页

作者： Alok C. Gupta b. S. Acharya Debanjan bose Varsha r. Chitnis Jun-Hui fan Center for Astrophysics Guangzhou University Guangzhou 510006 China Tata Institute of Fundamental research Homi Bhabha Road Colaba Mumbai - 400 005 India Aryabhatta research Institute of Observational Sciences （ArIES） Manora Peak Nainital - 263129India

We report the result of simultaneous multi-wavelength observations of the TeV blazar Mrk 421 during February - March 2003. We observed Mrk 421 using the Pachmarhi Array of Cerenkov Telescopes （PACT） of Tata Institute of Fundamental research at Pachmarhi, India. Other simultaneous data were taken from the literature and public data archives. We have analyzed the high quality X-ray （2-20 keV） observations from the NASA rossi X-ray Timing Explorer （rXTE）. We obtained a possible correlated variability between X-ray and J band （1.25 μ） near infrared （NIr） wavelength. This is the first case of X-ray and NIr correlated variability in Mrk 421 or any high energy peaked （HbL） blazar. The correlated variability reported here indicates a similar origin for the NIr and X-ray emissions. The emission is not affected much by the environment of the surrounding medium of the central engine of Mrk 421. The observations are consistent with the shock-in-jet model for the emissions.

关键词： galaxies active - galaxies blazars general - galaxies blazars individual Mrk 421

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Locomotion behavior of cao vit gibbon(Nomascus nasutus)living in karst forest in bangliang Nature reserve,Guangxi,China

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Integrative Zoology 2013年第4期8卷 356-364页

作者： Pengfei fan Matthew b.SCOTT Hanlan FEI Changyong MA Institute of Eastern-Himalaya biodiversity research Dali UniversityDaliChina

The cao vit gibbon is a critically endangered *** approximately 110 individuals remain in degraded karst forest along the China-Vietnam *** forest is unusual gibbon ***,the canopy height of cao vit gibbon habitat is approximately 10 *** on the locomotor.b.havior of gibbons living in this particular forest type might provide important insight into locomotor stability and variability of *** used 5 min scan samples to record the locomotion mode,support use and canopy strata of gibbons in 3 groups for 2096 h between January 2008 and December *** cao vit gibbon habitat has a lower canopy in comparison to that of other forests inhabited by gibbons,cao vit gibbons displayed a similar overall locomotor pattern to other gibbon species(Symphalangus syndactylus,Hylobates lar and Hylobates agilis)in which brachiation dominate their locomotor *** vit gibbons spent most of their time travelling on inclined branches(2-10 cm)in the middle stratum through the forest *** females appear to more often employ safer modes of locomotion(bridging more often and brachiation less),while adult males choose riskier modes(leaping more and climbing less).As gibbons increased in body weight,as they grew from infant to adult,they tended to use larger *** research documented that locomotor.b.havior in Hylobatidae is strongly determined by anatomical characters,but cao vit gibbons also show the ability to use various supports,enabling them to survive in karst forest.

关键词： adaptation cao vit gibbon karst forest locomotion Nomascus nasutus

bayesian optimization for active flow control

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Acta Mechanica Sinica 2021年第12期37卷 1786-1798页

作者： Antoine b.blanchard Guy Y.Cornejo Maceda Dewei fan Yiqing Li Yu Zhou bernd r.Noack Themistoklis P.Sapsis Department of Mechanical Engineering Massachusetts Institute of TechnologyCambridgeMA 02139USA Universit′e Paris-Saclay CNRSLaboratoire Interdisciplinaire des Sciences du Num′erique91400 OrsayFrance Center for Turbulence Control Harbin Institute of TechnologyShenzhen 518058China School of Mechanical Engineering and Automation Harbin Institute of TechnologyShenzhen 518058China

A key question in flow control is that of the design of optimal controllers when the control space is high-dimensional and the experimental or computational budget is *** address this formidable challenge using a particular flavor of machine learning and present the first application of bayesian optimization to the design of open-loop controllers for fluid *** consider a range of acquisition functions,including the recently introduced output-informed criteria of blanchard and Sapsis(2021),and evaluate performance of the bayesian algorithm in two iconic configurations for active flow control:computationally,with drag reduction in the fluidic pinball;and experimentally,with mixing enhancement in a turbulent *** these flows,we find that bayesian optimization identifies optimal controllers at a fraction of the cost of other optimization strategies considered in previous *** optimization also provides,as a by-product of the optimization,a surrogate model for the latent cost function,which can be leveraged to paint a complete picture of the control *** proposed methodology can be used to design open-loop controllers for virtually any complex flow and,therefore,has significant implications for active flow control at an industrial scale.

关键词： bayesian optimization Flow control Drag reduction Turbulence