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最优控制理论应用于发电商竞价的研究思路

电力系统自动化 2005年第12期29卷 1-6页

作者：刘有飞吴复立 k.l.teo 香港大学电机电子工程系香港理工大学应用数学系

电力市场中发电商出力最优竞标问题得到了广泛研究,但不足之处是只考虑了发电商的短期优化行为。文中针对电力市场的动态和发电商长期优化的行为,应用最优控制理论对发电商最优竞价问题进行了概念性研究。其中系统负荷用周期性函数描述... 详细信息

电力市场中发电商出力最优竞标问题得到了广泛研究,但不足之处是只考虑了发电商的短期优化行为。文中针对电力市场的动态和发电商长期优化的行为,应用最优控制理论对发电商最优竞价问题进行了概念性研究。其中系统负荷用周期性函数描述;且从最大化利润的一阶条件出发,发电出力竞争过程被描述成一个动态、非线性反馈系统。从而发电商的长期优化决策被描述成一个标准的最优控制问题。采用软件MISER3对上述最优控制问题进行了数字求解,通过仿真研究了最优控制应用的性能,并给出系统参数变化对最优控制性能影响的灵敏度分析,得到了一些有意义的结论。

关键词：竞价电力市场最优控制非线性周期参数系统灵敏度分析

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一类半线性双曲系统的状态观测问题

数学年刊（A辑） 2004年第2期25卷 189-198页

作者：潘立平 k.l.teo 张旭复旦大学数学系上海200433 香港理工大学应用数学系四川大学数学学院成都610064

本文考虑一类半线性双曲系统的状态观测问题,给出了一个(求解)算法并证明了其在某种相当强的意义上的有效性.

关键词：状态观测半线性双曲系统算法

Squeezing Germanium Nanostructures

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Squeezing Germanium Nanostructures

利用高压拉曼散射研究Ge/SiO2/Si纳米系统的压力/张力(英文)

第十三届全国光散射学术会议

作者： lei liu k.l.teo Z.X.Shen Department of Physics 2 Science Drive 3National University of Singapore Department of Electrical and Computer Engineering National University of Singapore4 Engineering Drive 3Singapore 117576 School of Physical and Mathematical Sciences Nanyang Technological University1 Nanyang WalkBlock 5Level 3Singapore 637616

We report the pressure dependence of Ge nanocrystals embedded in SiO film matrix on Si substrate using Raman scattering and finite element *** of SiO film from the Si substrate occurs at-23 kbar due to the large difference between the compressibility of the SiO matrix and Si *** observed effect can be understood by the nonhomogeneous distribution of the

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光散射学报 2005年第3期 14-16页

作者： k.l.teo Department of Electrical and Computer Engineering National University of Singapore

We report the pressure dependence of Ge nanocrystals embedded in SiO2 film matrix on Si substrate using Raman scattering and finite element analysis. Delamination of SiO2 film from the Si substrate occurs at ～23 kbar due to the large difference between the compressibility of the SiO2 matrix and Si substrate. The observed effect can be understood by the nonhomogeneous distribution of the elastic field in the Ge/SiO2/Si nanosystem. Previous high pressure Pl results on the Si/SiO2/Si nanosystem can also be explained by the nonuniform distribution of the elastic field. Although our investigation focuses on the Ge/SiO2/Si nanosystem, our results could provide generally understanding on the elastic properties of different multi-component nanosystems.

关键词： SiO Ge/SiO2/Si cm

Understanding Bonding Nature ofα-keggin Polyoxometalates[XW_(12)O_(40)]^(n−)(X=Al,Si,P,S):A Generalized Superatomic Perspective

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Energy & Environmental Materials 2024年第6期7卷 176-183页

作者： Rui li Yulei Shi Famin Yu Rui Wang Haitao Yan Boon k.teo Zhigang Wang Department of Physics Capital Normal UniversityBeijing 100048China key laboratory of Material Simulation Methods&Software of Ministry of Education College of PhysicsJilin UniversityChangchun 130012China Institute of Atomic and Molecular Physics Jilin UniversityChangchun 130012China State key laboratory for Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China Institute of Theoretical Chemistry College of ChemistryJilin UniversityChangchun 130012China

α-keggin polyoxometalates(POMs)[XW_(12)O_(40)]^(n−)(X=Al,Si,P,S)are widely used in batteries owing to their remarkable redox ***,the mechanism underlying the applications appears inconsistent with the widely accepted covalent bonding ***,first-principles calculations show that XW_(12)are core–shell structures composed of a shell and an XO_(4)^(n−)core,both are stabilized by covalent ***,owing to the presence of a substantial number of electrons in W_(12)O_(36)shell,the frontier molecular orbitals of XW_(12)are not only strongly delocalized but also exhibit superatomic properties with high-angular momentum electrons that do not conform to the Jellium *** analysis indicates that energetically high lying filled molecular orbitals(MOs)have reached unusually high-angular momentum characterized by quantum number k or higher,allowing for the accommodation of numerous *** attribute confers strong electron acceptor ability and redox activity to XW_(12).Moreover,electrons added to XW_(12)still occupy the k orbitals and will not cause rearrangement of the MOs,thereby maintaining the stability of these *** findings highlight the structure–activity relationship and provide a direction for tailor-made POMs with specific properties at atomic level.

关键词： first principles molecular orbital polyoxometalate redox activity superatom

Aggregation-induced emission polymers via reversible-deactivation radical polymerization Special Collection:Distinguished Australian Researchers

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Aggregate

Aggregate 2024年第1期5卷 16-46页

作者： Nicholas kai Shiang teo Bo Fan Aditya Ardana San H.Thang School of Chemistry Monash UniversityClaytonVictoriaAustralia

Aggregation-induced emission(AIE)is a unique phenomenon whereby aggregation of molecules induces fluorescence emission as opposed to the more commonly known aggregation-caused quenching(ACQ).AIE has the potential to be utilized in the large-scale production of AIE-active polymeric materials because of their wide range of practical applications such as stimuli-responsive sensors,biological imaging agents,and drug delivery *** is evident from the increasing number of publications over the years since AIE was first *** addition,the evergrowing interest in this field has led many researchers around the world to develop new and creative methods in the design of monomers,initiators and crosslinkers,with the goal of broadening the scope and utility of AIE *** of the most promising approaches to the design and synthesis of AIE polymers is the use of the reversible-deactivation radical polymerization(RDRP)techniques,which enabled the production of well-controlled AIE materials that are often difficult to achieve by other *** this review,a summary of some recent works that utilize RDRP for AIE polymer design and synthesis is presented,including(i)the design of AIE-related monomers,initiators/crosslinkers;the achievements in preparation of AIE polymers using(ii)reversible addition–fragmentation chain transfer(RAFT)technique;(iii)atom transfer radical polymerization(ATRP)technique;(iv)other techniques such as Cu(0)-RDRP technique and nitroxide-mediated polymerization(NMP)technique;(v)the possible applications of these AIE polymers,and finally(vi)a summary/perspective and the future direction of AIE polymers.

关键词： aggregation-induced emission atom transfer radical polymerization nitroxide-mediated polymerization reversible addition–fragmentation chain transfer reversible-deactivation radical polymerization

Cool white light and tunable multicolor emission from Tb^(3+)/Dy^(3+)co-activated glasses under different excitations for WlEDs

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Journal of Rare Earths 2024年第1期42卷 46-56,I0002页

作者： l.Vijayalakshmi k.Naveen kumar Jong Dae Baek Department of Automotive Engineering Yeungnam UniversityGyeongsanGyeongbuk38541Republic of Korea Department of Mechanical Engineering Yeungnam UniversityGyeongsan38541Republic of Korea

A set of co-doped(Tb^(3+)/Dy^(3+))lithium zinc borate(lZB)glasses were developed by melt *** structural evaluation was performed for synthesized glassy *** Dy^(3+)and Tb^(3+)individually doped glasses exhibit intense yellow and green luminescence bands at 575 nm(^(4)F_(9/2)→^(6)H_(13/2))and543 nm(^(5)D_(4)→^(7)F_(5)),*** sensitization effect of Dy^(3+)on Tb^(3+)was analyzed by increasing the Tb^(3+)content with respect to the optimum Dy^(3+)content(0.5 mol%)in Dy^(3+)/Tb^(3+).The spectral overlay of Dy^(3+)luminescence and Tb^(3+)absorption profiles,Dy^(3+)/Tb^(3+)Pl spectra under different excitations 352,362,376,and 385 nm,shortening decay lifetimes of Dy^(3+)in Dy^(3+)/Tb^(3+)co-activated glasses,energy transfer(ET)parameters,chromaticity coordinates and their corresponding correlated temperatures all help to explain ET from Dy^(3+)to Tb^(3+).At 385 nm of Dy^(3+)excitation,the optimized co-activated(0.5Dy^(3+)+1.0Tb^(3+)):lZB glass displays cool white light *** non-radiative ET from Dy^(3+)to Tb^(3+)is dominated by electric dipole-dipole interaction and its ET efficiency was calculated to be 63%.At the same time,reverse ET from Tb^(3+)to Dy^(3+)was also *** shift in color coordinates from dominant yellow to greenish-yellow,green and white light emission suggests that Dy^(3+)/Tb^(3+)coactivated lZB glasses can be a potential candidate for UV converted multicolor and white light emitting devices.

关键词： Rare earths Photoluminescence Energy transfer Spectral overlap Decay lifetime Multicolor emitting lEDs

Will Sustainable Food Sovereignty Research Be Sustainable in the Future?

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Agricultural Sciences 2024年第1期15卷 165-186页

作者： Teck Choon teo School of Business TMC Institute Tashkent Uzbekistan

The article proposes two agricultural paradigms to address global food production sustainability. First, precision agroecology may unite production-oriented and ecological agriculture, but it offers distinct solutions based on data, innovation, and decision-analysis technologies. The author demonstrates how precision technology and agroecological principles can transform agriculture by 1) minimizing inputs with optimization prescriptions, 2) replacing self-sustaining inputs with location variable rate technology, 3) integrating functional ecosystems into agroecosystems with exact preservation technology, 4) hooking up farmers and consumers via value-based food ecosystems, and 5) establishing equitable agroecology. Hence, precision agroecology provides a rare opportunity to integrate indigenous practices and contemporary technologies to revolutionize farming practices. Precision agroecology can tackle agriculture’s most serious sustainability issues in a world in flux.

关键词： Precision Agriculture Agroecology Biodiversity Food Systems

Interconnections between diabetic corneal neuropathy and diabetic retinopathy:diagnostic and therapeutic implications

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Neural Regeneration Research 2025年第8期20卷 2169-2180页

作者： Mingyi Yu Faith teo En Ning Chang liu Yu-Chi liu Tissue Engineering and Stem Cell Group Singapore Eye Research InstituteSingapore Yong loo lin School of Medicine National University of SingaporeSingapore Department of Cornea and External Eye Disease Singapore National Eye CenterSingapore Ophthalmology and Visual Sciences Academic Clinical Program Duke-NUS Medical SchoolSingapore

Diabetic corneal neuropathy and diabetic retinopathy are ocular complications occurring in the context of diabetes *** corneal neuropathy refers to the progressive damage of corneal *** retinopathy has traditionally been considered as damage to the retinal ***,growing evidence suggests that diabetic retinopathy is a complex neurovascular disorder resulting from dysfunction of the neurovascular unit,which includes both the retinal vascular structures and neural *** retinopathy is one of the leading causes of blindness and is frequently screened for as part of diabetic ocular ***,diabetic corneal neuropathy is commonly overlooked and underdiagnosed,leading to severe ocular surface *** studies have found that these two conditions tend to occur together,and they share similarities in their pathogenesis pathways,being triggered by a status of chronic *** review aims to discuss the interconnection between diabetic corneal neuropathy and diabetic retinopathy,whether diabetic corneal neuropathy precedes diabetic retinopathy,as well as the relation between the stage of diabetic retinopathy and the severity of corneal *** also endeavor to explore the relevance of a corneal screening in diabetic eyes and the possibility of using corneal nerve measurements to monitor the progression of diabetic retinopathy.

关键词： cornea corneal nerves diabetes diabetic corneal neuropathy diabetic retinopathy retina