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| 1 | Effects of dietary protein/energy ratio on growth performance,carcass trait,meat quality,and plasma metabolites in pigs of different genotypes显示文摘Background:The protein/energy ratio is important for the production performance and utilization of available feed resources by animals.Increased protein consumption by mammals leads to elevated feed costs and increased nitrogen release into the environment.This study aimed to evaluate the effects of dietary protein/energy ratio on the growth performance,carcass traits,meat quality,and plasma metabolites of pigs of different genotypes.Methods:Bama mini-pigs and Landrace pigs were randomly assigned to two dietary treatment groups(Chinese conventional diet with low protein/energy ratio or National Research Council diet with high protein/energy ratio;n = 24 per treatment) in a 2x2 factorial arrangement.Blood and muscle samples were collected at the end of the nursery,growing,and finishing phases.Results:We observed significant interactions(P< 0.05) between breed and diet for total fat percentage,intramuscular fat(IMF) content,protein content in biceps femoris(BF) muscle,and plasma urea nitrogen(UN) concentration in the nursery phase;for average daily gain(ADG),average daily feed intake(ADFI),dry matter,IMF content in psoas major(PM) muscle,and plasma total protein and albumin concentrations in the growing phase;and for drip loss and plasma UN concentration in the finishing phase.Breed influenced(P < 0.05) growth performance,carcass traits,and meat quality,but not plasma metabolites.Throughout the trial,Landrace pigs showed significantly higher(P < 0.05) ADG,ADFI,dressing percentage,lean mass rate,and loin-eye area than did Bama mini-pigs,but significantly lower(P< 0.05)feed/gain ratio,fat percentage,backfat thickness,and IMF content.Dietary protein/energy ratio influenced the pH value,chemical composition of BF and PM muscles,and plasma activities of glutamic-pyruvic transaminase and gamma-glutamyl transpeptidase,and plasma concentration of UN.Conclusions:Compared with Landrace pigs,Bama mini-pigs showed slower growth and lower carcass performance,but had better meat quality.Moreover,unlike Landrace pigs,the dietary protein/energy ratio did not affect the growth performance of Bama mini-pigs.These results suggest that,in swine production,low dietary protein/energy ratio may be useful for reducing feed costs and minimizing the adverse effects of ammonia release into the environment. | Yingying Liu Xiangfeng Kong Guoli Jiang Bi'e Tan Jinping Deng Xiaojian Yang Fengna Li Xia Xiong Yulong Yin | 2015 | Journal of Animal Science and Biotechnology2015，6，4： | 37 |
| 2 | Assessment on Agricultural Drought Risk Based on Variable Fuzzy Sets Model显示文摘Drought is one of the major natural disasters causing huge agricultural losses annually. Regional agricultural drought risk assessment has great significance for reducing regional disaster and agricultural drought losses. Based on the fuzzy characteristics of agricultural drought risk, variable fuzzy sets model was used for comprehensively assessing agricultural drought risk of Liaoning Province in China. A multi-layers and multi-indices assessment model was estab-lished according to variable fuzzy sets theory, and agricultural drought risk of all 14 prefecture-level cities was respec-tively estimated in terms of dangerousness, vulnerability, exposure and drought-resistibility. By calculating the combi-nation weights of four drought risk factors, agricultural drought risk grade of each city was obtained. Based on the as-sessment results, the spatial distribution maps of agricultural drought risk were drawn. The results shows that eastern cities have lower drought dangerousness than western cities in Liaoning Province totally. Most cities are located in low drought vulnerability region and high drought exposure region. Because of frequent and severe drought since 2000, most cities are located in lower drought-resistibility region. Comprehensive agricultural drought risk presents apparent spatial characteristics, escalating from the east to the west. Drought dangerousness is the most important factor influencing comprehensive agricultural drought risk. Through the spatial distribution maps of drought risk, decision makers could find out drought situation and make decisions on drought resistance conveniently. | ZHANG Dan WANG Guoli ZHOU Huicheng | 2011 | Chinese Geographical Science2011，21，2： | 32 |
| 3 | Effects of process parameters on pore structure of semi-coke prepared by solid heat carrier with dry distillation显示文摘The semi-coke was prepared by solid heat carrier with dry distillation in single factor method. The pore structures of raw coal and semi-coke were characterized by Brunauer-Emmett-Teller (BET) and scanning electron microscope (SEM). The results show that the adsorption and desorption isotherm of semi-coke are not coincident. There was a wide pore distribution on the semi-coke, in which mesopores and micropores account for a considerable proportion. Also there are many more secondary pores. With the increase of the final temperature of heat carrier and constant temperature, as well as the decrease of volume ratio of coal and hot carrier reactor, specific surface area and pore volume of semi-coke increased rapidly first and then decreased and finally increased, along with the rapidly reduction of average pore size. SEM photos show that the surface of semi-coke becomes increasingly rough and glossy. | Zhou, Guoli Wu, Jianjun Miao, Zhenyong Hu, Xuelian Li, Xia Shi, Xin Cai, Zhidan Shang, Yukun | 2013 | International Journal of Mining Science and Technology2013，23，3： | 20 |
| 4 | Risk analysis of dynamic control of reservoir limited water level by considering flood forecast error显示文摘Flood control forecast operation mode is one of the main ways for determining the upper bound of dynamic control of flood limited water level during flood season. The floodwater utilization rate can be effectively increased by using flood forecast information and flood control forecast operation mode. In this paper, Dahuofang Reservoir is selected as a case study. At first, the distribution pattern and the bound of forecast error which is a key source of risk are analyzed. Then, based on the definition of flood risk, the risk of dynamic control of reservoir flood limited water level within different flood forecast error bounds is studied. The results show that, the dynamic control of reservoir flood limited water level with flood forecast information can increase the floodwater utilization rate without increasing flood control risk effectively and it is feasible in practice. | ZHANG YanPing WANG GuoLi PENG Yong ZHOU HuiCheng | 2011 | Science China(Technological Sciences)2011，54，7： | 16 |
| 5 | An Ant Colony Algorithm Based on Cross-Layer Design for Routing and Wavelength Assignment in Optical Satellite Networks显示文摘This paper introduces an ant colony routing and wavelength assignment algorithm based on cross-layer design(CL-ACRWA),which can overcome the adverse effects of Doppler wavelength shift on data transmission in optical satellite networks. Firstly, a cross-layer optimization model is built, which considers the Doppler wavelength shift, the transmission delay as well as wavelength-continuity constraint. Then an ant colony algorithm is utilized to solve the cross-layer optimization model, resulting in finding an optimal light path satisfying the above constraints for every connection request. The performance of CL-ACRWA is measured by the communication success probability, the convergence property and the transmission delay. Simulation results show that CL-ACRWA performs well in communication success probability and has good global search ability as well as fast convergence speed. Meanwhile, the transmission delay can meet the basic requirement of real-time transmission of business. | Guoli Wen Qi Zhang Houtian Wang Qinghua Tian Ying Tao | 2017 | China Communications2017，14，8： | 14 |
| 6 | Relationship between electrochemical characteristics and SCC of X70 pipeline steel in an acidic soil simulated solution显示文摘Stress corrosion cracking (SCC) of X70 pipeline steel in simulated solution of the acidic soil in Yingtan in China was investigated using slow strain rate test (SSRT), SEM and potentiodynamic polarization technique. Experiment results indicate that X70 steel is highly susceptible to SCC as applied potential reduces, which is manifested in loss of toughness and brittle fracture. Constant polarization current can detect the occurrence of SCC. The lower the polarization current is the sooner stress corrosion cracking occurs. The SCC mechanisms are different at varying potentials. When potential is higher than open circuit potential, anodic process controls SCC, whereas when potential is far lower than open circuit potential, cathodic process controls SCC, and between these two potential regions, a combined electrochemical process controls the SCC. Stress or strain has a synergistic effect with electrochemical reactions to accelerate the cathodic hydrogen evolution process, which makes the X70 pipeline steel to be more susceptible to SCC. | Zhiyong LIU Xiaogang LI Yingrui ZHANG Cuiwei DU Guoli ZHA | 2009 | Acta Metallurgica Sinica(English Letters)2009，22，1： | 13 |
| 7 | Single crystalline CH_3NH_3PbI_3 self-grown on FTO/TiO_2 substrate for high efficiency perovskite solar cells显示文摘Since its first report in 2009,CH_3NH_3PbI_3-based perovskite solar cells(PSCs)have emerged as one of the most exciting developments in the next generation photovoltaic(PV)technologies[1],with its PV conversion efficiency(PCE)rising spectacularly from3.81% to 22.1% in just 7 years.Such rapid advance is | Jinjin Zhao Guoli Kong Shulin Chen Qian Li Boyuan Huang Zhenghao Liu Xingyuan San Yujia Wang Chen Wang Yunce Zhen Haidan Wen Peng Gao Jiangyu Li | 2017 | Science Bulletin2017，62，17： | 12 |
| 8 | Tectonic evolution of the Dabashan orocline, central China: Insights from the superposed folds in the eastern Dabashan foreland显示文摘The Dabashan orocline is situated in the northwestern margin of the central Yangtze block,central China.Previous studies have defned the orthogonal superposed folds growing in its central-western segment thereby confrming its two-stage tectonic evolution history.Geological mapping has revealed that more types of superposed folds have developed in the eastern segment of the orocline,which probably provides more clues for probing the structure and tectonic history of the Dabashan orocline.In this paper,based on geological mapping,structural measurements and analyses of deformation,we have identifed three groups of folds with different trends(e.g.NW-,NE-and nearly E-trending folds)and three types of structural patterns of superposed folds in the eastern Dabashan foreland(e.g.syn-axial,oblique,and conjunctional superposed folds).In combination with geochronological data,we propose that the synaxial superposed folds are due to two stages of wNeS shortening in the west and north of the Shennongjia massif,and that oblique superposed folds have been resulted from the superposition of the NW-and NE-trending folds onto the early ~E-W folds in the east of the Shennongjia massif in the late Jurassic to early Cretaceous.The conjunctional folds are composed of the NW-and NE-trending folds,corresponding to the regional-scale dual-orocline in the eastern Sichuan as a result of the southwestward expansion of the Dabashan foreland during late Jurassic to early Cretaceous,coeval with the northwestward propagation of the Xuefengshan foreland.Integration of the structure and geochronology of the belt shows that the Dabashan orocline is a combined deformation belt primarily experiencing a twostage tectonic evolution history in Mesozoic,initiation of the Dabashan orocline as a foreland basin along the front of the Qinling orogen in late Triassic to early Jurassic due to collisional orogeny,and the fnal formation of the Dabashan orocline owing to the southwestward propagation of the Qinling orogen during late Jurassic to early Cretaceous intra-continental orogeny.Our studies provide some evidences for understanding the structure and deformation of the Dabashan orocline. | Wei Shi Jianhua Li Mi Tian Guoli Wu | 2013 | Geoscience Frontiers2013，4，6： | 12 |
| 9 | Forest Fire Susceptibility Modeling Using a Convolutional Neural Network for Yunnan Province of China显示文摘Forest fires have caused considerable losses to ecologies, societies, and economies worldwide. To minimize these losses and reduce forest fires, modeling and predicting the occurrence of forest fires are meaningful because they can support forest fire prevention and management. In recent years, the convolutional neural network(CNN) has become an important state-of-the-art deep learning algorithm, and its implementation has enriched many fields. Therefore, we proposed a spatial prediction model for forest fire susceptibility using a CNN. Past forest fire locations in Yunnan Province, China, from 2002 to 2010, and a set of 14 forest fire influencing factors were mapped using a geographic information system. Oversampling was applied to eliminate the class imbalance, and proportional stratified sampling was used to construct the training/validation sample libraries. A CNN architecture that is suitable for the prediction of forest fire susceptibility was designed and hyperparameters were optimized to improve the prediction accuracy. Then, the test dataset was fed into the trained model to construct the spatial prediction map of forest fire susceptibility in Yunnan Province.Finally, the prediction performance of the proposed model was assessed using several statistical measures—Wilcoxon signed-rank test, receiver operating characteristic curve,and area under the curve(AUC). The results confirmed the higher accuracy of the proposed CNN model(AUC 0.86)than those of the random forests, support vector machine,multilayer perceptron neural network, and kernel logistic regression benchmark classifiers. The CNN has stronger fitting and classification abilities and can make full use of neighborhood information, which is a promising alternative for the spatial prediction of forest fire susceptibility. This research extends the application of CNN to the prediction of forest fire susceptibility. | Guoli Zhang Ming Wang Kai Liu | 2019 | International Journal of Disaster Risk Science2019，10，3： | 12 |
| 10 | Effect of deteriorated microstructures on stress corrosion cracking of X70 pipeline steel in acidic soil environment显示文摘In order to investigate stress corrosion cracking (SCC) of X70 pipeline steel and its weld joint area in acidic soil environ-ment in China, two simulating methods were used: one was to obtain bad microstructures in heat affected zone by annealing at 1300°C for 10 min and then, quenching in water; the other was to get different simulating solutions of acidic soil in Yingtan in south-east China. The SCC susceptibilities of X70 pipeline steel before and after quenching in the simulating solutions were analyzed using slow stain rate test (SSRT) and potentiodynamic polarization technique to investigate the SCC electrochemical mechanism of differ-ent microstructures further. The results show that SCC appears in the original microstructure and the quenched microstructure as the polarization potential decreases. Hydrogen revolution accelerates SCC of the two tested materials within the range of -850 mV to -1200 mV vs. SCE. Microstructural hardening and grain coarsening also increase SCC. The SCC mechanisms are different, anodic dissolution is the key of causing SCC as the polarization potential is higher than the null current potential, and hydrogen embrittle-ment will play a more important role to SCC as the polarization potential lower than the null current potential. | Zhiyong Liu Guoli Zhai Xiaogang Li Cuiwei Du | 2008 | Journal of University of Science and Technology Beijing2008，15，6： | 10 |
| 11 | Genome-Wide Analysis of the Sus Gene Family in Cotton显示文摘蔗糖 synthase (怀疑) 是在植物蔗糖新陈代谢的关键酶。在棉花,怀疑(EC 2.4.1.13 ) 是降级的主要的酶从种子上衣的韧皮部进口进棉花纤维的蔗糖。这研究示威了 Gossypium arboreum L. 的染色体, G。raimondii Ulbr,和 G。hirsutum L. ,包含了 8, 8,和 15 分别地怀疑基因。他们的结构的组织,种系发生的关系,和表示侧面被描绘。genomic 和编码序列的比较识别了哪个高度被保存在之间的多重 introns,数字和位置双并且 allotetraploid 棉花种类。大多数种系发生的 clades 从所有三种包含了序列,建议 tetraploid G 的 Sus 基因。hirsutum 它的双祖先源于那些。一个人怀疑组(怀疑我) 在棉花期间经历了扩大进化。表示分析显示大多数怀疑基因差别在各种各样的纸巾被表示并且在棉花纤维房间有发展依赖者表示侧面。一样的 orthologous 组的成员在所有三种有很类似的表示模式。这些结果提供新卓见进棉花的进化在纤维生长和开发期间怀疑基因家庭,和卓见进它的成员的生理的功能。 | Changsong Zou Cairui Lu Haihong Shang Xinrui Jing Hailiang Cheng Youping Zhang Guoli Song | 2013 | Journal of Integrative Plant Biology2013，55，7： | 10 |
| 12 | An Overview of China's Mainland Temperature Change Research显示文摘There has been significant effort devoted to investigating long-term trends in land surface air temperature over China's Mainland by Chinese scientists over the past 50 years, and much progress has been made in understanding dynamics of the changes. This review highlights research conducted by early Chinese climatologists, and particularly Professor Shaowu Wang from Peking University, with special focus on systematic work that has been conducted since the mid to late 1970s. We also discuss major issues that remain unresolved in past and current studies. The most recent analyses indicate that the country-average annual mean surface air temperature rose by 1.12℃ over the past 115 years(1901–2015), with a rate of increase of about 0.10℃ decade^(-1). Temperatures have risen more rapidly since the 1950s, with the rate of increase of more than 0.25℃ decade^(-1). However, the recent increase in temperatures is in large part due to contamination by systematically biased data. These data are influenced by unprecedented urbanization in China, with a contribution of urbanization to the overall increase of annual mean temperatures in China's Mainland of about one third over the past half a century. If the bias is corrected, the rate of increase for the country-average annual mean surface air temperature is 0.17℃ decade^(-1) over the last 50–60 years, which is approximately the same as global and Northern Hemispheric averages in recent decades. Future efforts should be focused towards the recovery and digitization of early-year observational records, the homogenization of observational data, the evaluation and adjustment of urbanization bias in temperature data series from urban stations, the analysis of extreme temperatures over longer periods including the first half of the 20th century, and the investigation of the observed surface air temperature change mechanisms in China's Mainland. | Guoyu REN Yihui DING Guoli TANG | 2017 | Journal of Meteorological Research2017，31，1： | 9 |
| 13 | Effects of Fujian tablet on Nogo-A mRNA expression and plasticity of the corticospinal tract in a rat model of focal cerebral ischemia显示文摘The present study investigated the effects of Fujian tablet, a Chinese medicine compound that can nourish liver and kidney, on corticospinal tract plasticity and cervical cord microenvironment in rats with focal cerebral ischemia. Results showed that motor function of rats with right proximal middle cerebral artery occlusion was significantly improved following treatment with Fujian tablet, 9 g crude drug/kg. Anterograde tracing revealed significantly increased biotinylated dextran amine expression in the denervated (left) side of the cervical cord (C4-6) following Fujian tablet treatment, and significantly decreased Nogo-A mRNA expression was detected in the denervated side of the cervical cord (C4-6) using in situ hybridization. Pearson's correlation analysis showed a negative correlation between biotinylated dextran amine and Nogo-A mRNA expression (r = -0.943, P < 0.01). Results demonstrated that Fujian tablet can promote corticospinal tract plasticity possibly through the inhibitory effect on Nogo-A mRNA expression in the cervical spinal cord, thereby improving motor dysfunction. | Wei Liu Yonghong Zhou Qing Jia Bingbing Han Guoli Zhang | 2011 | Neural Regeneration Research2011，6，33： | 9 |
| 14 | Formation of the Moping Dome in the Xuefengshan Orocline, Central China and its Tectonic Significance显示文摘Many equiaxial dome-like structures developed in the north segment of the Xuefengshan orocline, Central China are obviously inconcordant with the NE-trending linear structures in this area, which contain important records for understanding the structural framework and evolution of this belt. In this paper, taking one of the typical dome-like structures in the Xuefengshan orcline (e.g. Moping dome-like structure) as an example, based on its structural framework interpratatoin, superposed deformation analysis and paleo-stress fields reconstruction, we propose the Moping dome-like structure is composed of two populations of different-striking thrust-fold structures, ~E-trending and NE-striking structures, indicative of two-stages shortening, ~N- and NW-striking, respectively. Together with the geochronological analysis, we suggest the first stage of shortening occurred in Late Triassic to Early Jurassic, due to the Indosinian intercollisional orogeny of the Yangtze Block and the North China Block. The second occurred during Late Jurassic Early Cretaceous owing to Yanshanian intracontinental orogeny, leading to the intensive superposition of the NE-trending structures onto the ~E-trending structures, and the final ocurrence of the Moping dome. Thus, our study indicates the Xuefengshan arc-shape belt also experienced two-phase deformation, and resulted from the superposition of NE SW structures onto ~E-W structures in Late Jurassic Early Cretaceous, which could provide new structural evidence for probing the Mesozoic tectonic framework and evolution of the Xuefengshan orocline. | SHI Wei DONG Shuwen LI Jianhua TIAN Mi WU Guoli | 2013 | Acta Geologica Sinica(English Edition)2013，87，3： | 9 |
| 15 | Transcriptome analysis reveals long noncoding RNAs involved in fiber development in cotton (Gossypium arboreum)显示文摘Long noncoding RNAs(lnc RNAs)play important roles in various biological regulatory processes in yeast,mammals,and plants.However,no systematic identification of lnc RNAs has been reported in Gossypium arboreum.In this study,the strand-specific RNA sequencing(ss RNA-seq)of samples from cotton fibers and leaves was performed,and lnc RNAs involved in fiber initiation and elongation processes were systematically identified and analyzed.We identified 5,996 lnc RNAs,of which 3,510 and 2,486 can be classified as long intergenic noncoding RNAs(linc RNAs)and natural antisense transcripts(lnc NAT),respectively.Linc RNAs and lnc NATs are similar in many aspects,but have some differences in exon number,exon length,and transcript length.Expression analysis revealed that 51.9%of linc RNAs and 54.5%of lnc NATs transcripts were preferentially expressed at one stage of fiber development,and were significantly highly expressed than protein-coding transcripts(21.7%).During the fiber and rapid elongation stages,rapid and dynamic changes in lnc RNAs may contribute to fiber development in cotton.This work describes a set of lnc RNAs that are involved in fiber development.The characterization and expression analysis of lnc RNAs will facilitate future studies on their roles in fiber development in cotton. | Changsong Zou Qiaolian Wang Cairui Lu Wencui Yang Youping Zhang Hailiang Cheng Xiaoxu Feng Mtawa Andrew Prosper Guoli Song | 2016 | Science China(Life Sciences)2016，59，2： | 9 |
| 16 | Study on reservoir operation optimization of Ertan Hydropower Station considering GFS forecasted precipitation显示文摘The medium-term runoff forecasting provided new information for forecast of medium and long term runoff and optimal hydroelectric power generation.According to the actual runoff and hydropower generating characteristics of Ertan Hydropower Station,we studied the decade runoff quantitatively and grade forecast model based on Global Forecasting System(GFS) precipitation forecast information in wet season,then used the posteriori runoff transition probability and measurable probability of runoff forecast to research the uncertain runoff description based on runoff forecast;finally on the basis of the runoff description and the grading forecast accuracy of GFS-based next 10 days'total forecast precipitation,we studied the uncertain optimal operating model of Ertan Hydropower Station considering runoff forecast.The results showed that the runoff forecast considering GFS forecast precipitation and uncertainty has significantly improved the existing runoff description and operating optimization model,and obviously raised the hydropower generation efficiency of Ertan Reservoir. | PENG Yong 1,WANG GuoLi 1,TANG GuoLei 1,ZHOU HuiCheng 1,WANG YaJun 2 & JIAN DePing 2 1 Institute of Water Resources and Flood Control,Dalian University of Technology,Dalian 116023,China 2 Ertan Hydropower Development Co.,Ltd.,Chengdu 610021,China | 2011 | Science China(Technological Sciences)2011，54，S1： | 8 |
| 17 | Geological characteristics and tectonic signifcance of unconformities in Mesoproterozoic successions in the northern margin of the North China Block显示文摘Several stratigraphic breaks and unconformities exist in the Mesoproterozoic successions in the northern margin of the North China Block.Geologic characters and spatial distributions of fve of these unconformities,which have resulted from different geological processes,have been studied.The unconformity beneath the Dahongyu Formation is interpreted as a breakup unconformity,representing the time of transition from continental rift to passive continental margin.The unconformities beneath the Gaoyuzhuang and the Yangzhuang formations are considered to be the consequence of regional eustatic fuctuations,leading to the exposure of highlands in passive margins during low sea-level stands and transgressive deposition on coastal regions during high sea-level stands.The unconformity atop the Tieling Formation might be caused by uplift due to contractional deformation in a back-arc setting,whereas the uplift after the deposition of the Xiamaling Formation might be attributed to a continental collision event.It is assumed that the occurrences of these unconformities in the Mesoproterozoic successions in the northern margin of the North China Block had a close bearing on the assemblage and breakup of the Columbia and Rodinia supercontinents. | Yongqiang Qu Jianguo Pan Shouxian Ma Zhiping Lei Lin Li Guoli Wu | 2014 | Geoscience Frontiers2014，5，1： | 7 |
| 18 | Atomic process of oxidative etching in monolayer molybdenum disulfide显示文摘The microscopic process of oxidative etching of two-dimensional molybdenum disulfide(2D MoS_2) at an atomic scale is investigated using a correlative transmission electron microscope(TEM)-etching study.MoS_2 flakes on graphene TEM grids are precisely tracked and characterized by TEM before and after the oxidative etching. This allows us to determine the structural change with an atomic resolution on the edges of the domains, of well-oriented triangular pits and along the grain boundaries. We observe that the etching mostly starts from the open edges, grain boundaries and pre-existing atomic defects.A zigzag Mo edge is assigned as the dominant termination of the triangular pits, and profound terraces and grooves are observed on the etched edges. Based on the statistical TEM analysis, we reveal possible routes for the kinetics of the oxidative etching in 2D MoS_2, which should also be applicable for other 2D transition metal dichalcogenide materials like MoSe_2 and WS_2. | Danhui Lv Hulian Wang Dancheng Zhu Jie Lin Guoli Yin Fang Lin Ze Zhang ChuanhongJin | 2017 | Science Bulletin2017，62，12： | 7 |
| 19 | Particle methods for multi- scale simulation of complex flows显示文摘The multi-scale structures of complex flows have been great challenges to both theoretical and engineer-ing researches, and multi-scale modeling is the natural way in response. Particle methods (PMs) are ideal constitutors and powerful probes of multi-scale models, owing to their physical insight and computational simplicity. In this paper, the role of different PMs for multi-scale modeling of complex flows is critically reviewed and possible development of PMs in this background is prospected, with the emphasis on pseudo-particle modeling (PPM). The performances of some different PMs are compared in simulations and new devel-opment in the fundamentals and applications of PPM is also reported, demonstrating PPM as a unique PM for multi-scale modeling. | GEWei MAJingsen ZHANGJiayuan TANGDexiang CHENFeiguo WANGXiaowei GUOLi LIJinghai | 2005 | Chinese Science Bulletin2005，50，11： | 6 |
| 20 | Optimization based accurate scheduling for generation and reserve of power system显示文摘With the improvement of electricity markets,the gradual aggravation of energy shortage and the environment pollution,it is urgent to formulate a new model to precisely satisfy the system demand for energy and reserve.Currently,power system opti-mization dispatching is always formulated as a discrete-time scheduling model.In this paper,we first demonstrate through an example that the upper and lower bounds of spinning reserve offered by a unit,given in the discrete-time model framework as constraints,is unreachable.This causes the problem that the reserve delivery obtained by the discrete-time scheduling model cannot be carried out precisely.From the detailed analysis of the ramp rate constraints,it is proved that the reachable upper and lower bounds of spinning reserve in every period can be expressed as functions of two variables,i.e.,generation level of unit at the start and end of this period.Thus,a new method is provided to calculate the upper and lower bounds of spinning reserve which are reachable in average.Furthermore,a new model based on this proposed method for joint scheduling of generation and reserve is presented,which considers the ability to realize the scheduled energy and reserve delivery.It converts the opti-mization based accurate scheduling for generation and reserve of power system from a continuous-time optimal control prob-lem to a nonlinear programming problem.Therefore,the proposed model can avoid the difficulties in solving a continu-ous-time optimal control problem.Based on the sequential quadratic programming method,numerical experiments for sched-uling electric power production systems are performed to evaluate the model and the results show that the new model is highly effective. | GAO YunLong PAN JinYan YANG ZiJiang GAO Feng JI GuoLi | 2012 | Science China(Technological Sciences)2012，55，1： | 6 |
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