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Energ. and Pow.r Eng.neering 2019年第8期11卷 320-332页

作者： Juliana F. Chade Mummey Ildo L. Sauer Dorel S. Ramos william w.-g. yeh Institute of Energ. and Environment University of S&atilde o Paulo S&atilde o Paulo Brazil Escola Politécnica University of S&atilde o Paulo S&atilde o Paulo Brazil Department of Civil and Environmental Eng.neering University of California Los Angeles USA

w.nd pow.r has an increasing.share of the Brazilian energ. market and may represent 11.6% of total capacity by 2024. For larg. hydro-thermal systems having.hig.-storag. capacity, a complementarity betw.en hydro and w.nd production could have important effects. The current optimization models are applied to dispatch pow.r plants to meet the market demand and optimize the g.neration dispatches considering.only hydroelectric and thermal pow.r plants. The remaining.sources, including.w.nd pow.r, small-hydroelectric plants and biomass plants, are excluded from the optimization model and are included deterministically. This w.rk introduces a g.neral methodolog. to represent the stochastic behavior of w.nd production aimed at the planning.and operation of larg. interconnected pow.r systems. In fact, considering.the g.neration of the w.nd pow.r source stochastically could show.the complementarity betw.en the hydro and w.nd pow.r production, reducing.the energ. price in the spot market w.th the reduction of thermal pow.r dispatches. In addition to that, w.th a reduction in w.nd pow.r and a simultaneous dry-season occurrence, this model, is able to show.the need of thermal pow.r plants dispatches as w.ll as the reduction of the risk of energ. shortag.s.

关键词： Stochastic Optimization Hydrothermal Systems Planning w.nd Pow.r Complementarity Synthetic Series g.neration

A Plant SMALL RNA-BINDINg.PROTEIN 1 Family Mediates Cell-to-Cell Trafficking.of RNAi Sig.als

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Molecular Plant 2020年第2期13卷 321-335页

作者： Yan Yan Byung.Kook Ham Yee Hang.Chong.Shyi-Dong.yeh william J.Lucas Department of Plant Biolog. College of Biological SciencesUniversity of CaliforniaDavisCA 95616USA Department of Plant Patholog. National Chung-Hsing UniversityTaichung Present address:g.obal Institute for Food Security University of SaskatchewanSaskatoonSK S7N 4J8Canada Present address:Department of Biolog. University of Saskatchewan112 Science PlaceSaskatoonSK S7N 5E2Canada

In plants,RNA interference(RNAi)plays a pivotal role in g.ow.h and development,and responses to environmental inputs,including.pathog.n *** intercellular and systemic trafficking.of small interfering.RNA(siRNA)/microRNA(miRNA)is a central component in this reg.latory ***,little is know. w.th reg.rds to the molecular ag.nts involved in the movement of these si/*** address this situation,w. employed a biochemical approach to identify and characterize a conserved SMALL RNA-BINDINg.PROTEIN 1(SRBP1)family that mediates non-cell-autonomous small RNA(sRNA)*** Arabidopsis,AtSRBP1 is a g.ycine-rich(g.)RNA-binding.protein,also know. as Atg.P7,w.ich w. show.binds sing.e-stranded siRNA.A viral vector,Zucchini yellow.mosaic virus(ZYMV),w.s employed to functionally characterized the AtSRBP1-4(Atg.P7/2/4/8)RNA recog.ition motif and g. ***-based studies revealed the g. domain as being.necessary and sufficient for SRBP1 cell-to-cell *** tog.ther,our finding. provide a foundation for future research into the mechanism and function of mobile sRNA sig.aling.ag.nts in plants.

关键词： RNAi small RNA-binding protein family small RNA movement non-cell-autonomous protein g.ycinerich protein

On the number of matching. of g.aphs formed by a g.aph operation

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Science China Mathematics 2006年第10期49卷 1383-1391页

作者： yeh Yeong.Nan Institute of Mathematics Academia Sinica

Let g.be a simple g.aph. Define R(g. to be the g.aph obtained from g.by adding.a new.vertex e* corresponding.to each edg. e = (a, b) of g.and by joining.each new.vertex e* to the end vertices a and b of the edg. e corresponding.to it. In this paper, w. prove that the number of matching. of R(g. is completely determined by the deg.ee sequence of vertices of g.

关键词： matching. Hosoya index, matching polynomial, oriented incident matrix,skew adjacency matrix.

Discovery of transition rules for g.og.aphical cellular automata by using.ant colony optimization

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Science China Earth Sciences 2007年第10期50卷 1578-1588页

作者： Anthony g.r-On yeh Center of Urban Planning.and Environmental Manag.ment The University of Hong.Kong Hong Kong SAR China

A new.intellig.nt alg.rithm of g.og.aphical cellular automata (CA) based on ant colony optimization (ACO) is proposed in this paper. CA is capable of simulating.the evolution of complex g.og.aphical phenomena, and the core of CA models is how.to define transition rules. How.ver, most of the transition rules are defined by mathematical equations, and are hence not explicit. w.en the study area is complicated, it is much more difficult to extract parameters for g.og.aphical CA. As a result, ACO is applied to g.og.aphical CA to automatically and intellig.ntly obtain transition rules in this paper. The transition rules extracted by ACO are defined as log.cal expressions rather than implicit mathematical equations to describe the complex relationships of the nature, and easy for people to understand. The ACO-CA model w.s applied to simulating.rural-urban land conversions in g.ang.hou City, China, and appropriate simulation results w.re g.nerated. Compared w.th See5.0 decision tree model, ACO-CA is more suitable to discovering.transition rules for g.og.aphical CA.

关键词： ant colony optimization, CA, g.og.aphical simulation, artificial intellig.nce

Know.edg. discovery for g.og.aphical cellular automata

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Science China Earth Sciences 2005年第10期48卷 1758-1767页

作者： Anthony g.r-On yeh Centre of Urban Planning.and Environmental Manag.ment The University of Hong Kong Hong Kong SAR China

This paper proposes a new.method for g.og.aphical simulation by applying.data mining.techniques to cellular automata. CA has strong.capabilities in simulating.complex systems. The core of CA is how.to define transition rules. There are no g.od methods for defining.these transition rules. They are usually defined by using.heuristic methods and thus subject to uncer-tainties. Mathematical equations are used to represent transition rules implicitly and have limita-tions in capturing.complex relationships. This paper demonstrates that the explicit transition rules of CA can be automatically reconstructed throug. the rule induction procedure of data mining. The proposed method can reduce the influences of individual know.edg. and preferences in de-fining.transition rules and g.nerate more reliable simulation results. It can efficiently discover know.edg. from a vast volume of spatial data.

关键词： know.edg. discovery, cellular automata, g.og.aphical simulation, g.og.aphical information systems.

Multi-ag.nt systems for simulating.spatial decision behaviors and land-use dynamics

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Science China Earth Sciences 2006年第11期49卷 1184-1194页

作者： Anthony g.r-On yeh Center of Urban Planning.and Environmental Manag.ment The University of Hong Kong Hong Kong SAR China

A new.method to simulate urban land-use dynamics is proposed based on multi-ag.nt systems (MAS). The model consists of a series of environmental layers and multi-ag.nt layers, w.ich can interact w.th each other. It attempts to explore the interactions betw.en different players or ag.nts, such as residents, property developers, and g.vernments, and betw.en these players and the envi- ronment. These interactions can g.ve rise to urban macro-spatial patterns. This model is used to simulate the land-use dynamics of the Haizhu district of g.ang.hou City in 1995―2004. Cellular automata (CA) w.re also used for the simulation of land use chang.s as a comparison. The study indicates that MAS has better performance for simulating.complex cities than CA.

关键词： multi-ag.nt systems, cellular automata, complex systems, cities, land use.

A concise review.about fracture assessments of brittle solids w.th V-notches

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Frontiers of Structural and Civil Eng.neering 2019年第2期13卷 478-485页

作者： Hsien-Yang.yeh Bin YANg Department of Mechanical and Aerospace Eng.neering California State UniversityLong BeachCA 90801USA Department of Chemical Eng.neering Shanghai Jiao Tong UniversityShanghai 200240China

A concise review.of recent studies about the fracture assessments of elastic brittle solid materials containing.V-notches is presented. In this preliminary and brief survey, elastic stress distributions in V-notched solids are discussed first. The concept of notch stress intensity factor is introduced. Combine the dig.tal imag. correlation method w.th numerical computation techniques to analyze the stress distribution near the notches. Fracture criteria such as strain energ. density, J-integ.al, theory of critical distance are used. How.ver, various new.materials are developed in different eng.neering.fields, thus, the establishment of reliable and accurate material streng.h theory or failure criterion is imperative. Therefore, predicting.fracture for various modem materials w.uld require more experiments to infer material dependent parameters in the local fracture model.

关键词： fracture assessment brittle solids V-notches review

Microbial diversity of soil bacteria in ag.icultural field contaminated w.th heavy metals

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Journal of Environmental Sciences 2008年第3期20卷 359-363页

作者： CHIEN Chihching.KUO Yumei CHEN Chang.hieh HUNg.Chunw.i yeh Chihw.i yeh w.ijen g.aduate School of Biotechnolog. and Bioeng.neering Yuan Ze University Chung-Li Taiwan 320 China Department of Occupational Safety and Health Chung Hwa University of Medical Technology Tainan Taiwan China

In this study w. evaluated the bacterial diversity in a soil sample from a site next to a chemical industrial factory previously contaminated w.th heavy metals. Analysis of 16S rDNA sequences amplified from DNA directly extracted from the soil revealed 17 different bacterial types （g.nera and/or species）. They included Polyang.um spp., Sphing.monas spp., Variovorax spp., Hafina spp., Clostridia, Acidobacteria, the enterics and some uncultured strains. Microbes able to tolerate hig. concentrations of cadmium （500μmol/L and above） w.re also isolated from the soil. These isolates included strains of Acinetobacter （strain CD06）, Enterobacter sp. （strains CD01, CD03, CD04 and CD08）（similar strains also identified in culture-independent approach） and a strain of Stenotrophomonas sp. The results indicated that the species identified from direct analysis of 16S rDNA of the soil can be quite different from those strains obtained from enrichment cultures and the microbial activities for heavy metal resistance mig.t be more appropriately addressed by the actual isolates.

关键词： cadmium heavy metal heavy metal resistant microbial diversity soil bacteria

Biomimetic flexible plate actuators are faster and more efficient w.th a passive attachment

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Acta Mechanica Sinica 2016年第6期32卷 1001-1011页

作者： Peter D.yeh Alexander Alexeev g.org. w.w.odruff School of Mechanical Eng.neering Georgia Institute of Technology

Using.three-dimensional computer simulations, w. probe biomimetic free sw.mming.of an internally actuated flexible plate in the reg.me near the first natural frequency. The plate is driven by an oscillating.internal moment approximating.the actuation mechanism of a piezoelectric macro fiber composite (MFC) bimorph. w. show.in our simulations that the addition of a passive attachment increases both sw.mming.velocity and efficiency. Specifically, if the active and passive sections are of similar size, the overall performance is the best. w. determine that this optimum is a result of tw. competing.factors. If the passive section is too larg., then the actuated portion is unable to g.nerate substantial deflection to create sufficient thrust. On the other hand, a larg. actuated section leads to a bending.pattern that is inefficient at g.nerating.thrust especially at hig.er frequencies.

关键词： Flexible plate Biomimetic Lattice Boltzmann Fluid-structure interaction Robotic fish Piezoelectric actuator

Porous Cube-like In_2O_3 Nanoparticles and Their Sensing.Characteristics tow.rd Ethanol

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Journal of Materials Science & Technolog. 2008年第4期24卷 667-674页

作者： Chih-Chia HUANg.Chen-Sheng.yeh Natl Cheng.Kung.Univ Dept Chem Tainan 70101 Taiwan

Porous cube-like crystalline In2O3 nanoparticles w.th an averag. diag.nal leng.h of 34.8 nm w.re fabricated by a laser ablation-reflux process to form In（OH）3, follow.d by a calcination treatment to yield porous In2O3. HRTEM （hig.-resolution transmission electronic microscopy）, XRD （X-ray diffraction）, BET （Brunauer-Emmett-Teller）, and XPS （X-ray photoelectron spectroscopy） analysis w.re used to characterize their crystalline structures, g.ain sizes, surface areas, and surface compositions. The as-prepared porous in-dium oxides w.re tested for their sensing.properties tow.rd ethanol. Non-porous In2O3 nanopow.er （about 40 nm） w.s also examined in order to compare the results w.th the as-prepared porous In2O3 nanomaterials. The porous In2O3 exhibited much better performance than that of non-porosus In2O3, and show.d enhanced sensitivity w.th a low.r detection limit than other reported In2O3-based materials w.en exposed to ethanol. g.od g.s sensitivity and linear behavior as a function of ethanol concentration w.re observed in the porous In2O3 nanoparticles.

关键词： In2O3 Porosity Nanoparticles g.s sensor