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Diet of Chinese skink, Eumeces chinensis: is prey size important?

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Integrative Zoology 2006年第2期1卷 59-66页

作者： xiaolin CHEN Yong JIANG School of Life Sciences Xiamen UniversityXiamenChina

The diet of the skink,Eumeces chinensis(Lacertilia:Scincidae),in Xiamen(Amoy),China was examined using stomach analysis during April and May,and its selection of prey size was tested by feeding ***(primarily Coleoptera,Lepidoptera,and Orthoptera),gastropods and arachnids constituted most of the *** diet,but earthworms,leeches,crustaceans and fish were also *** the field,male skinks ate more prey items that were 11–20 mm in length than other size *** presented with a choice of different-sized prey in the laboratory,male *** exhibited a strong preference for prey items 11–20 mm in length over other size *** relationship between prey size and handling time was exponential,indicating that there is an upper limit to the ability of *** to process *** energy intake for handling different-sized prey showed that selection of midsize-class prey items would provide male *** with the most energy-efficient prey *** results indicate that prey size selection in *** favors maximization of rates of energy intake,which is in agreement with optimal foraging theory.

关键词： diet Eumeces feeding ecology foraging strategy prey size skink

STOCHASTIC COMPARISONS IN A PRICE-QUANTITY SETTING FIRM WITH UNCERTAIN DEMAND AND EMERGENCY PROCUREMENT

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Journal of Systems Science and Systems Engineering 2013年第4期22卷 401-420页

作者： Minghui XU xiaolin XU Yi-hui ZHOU School of Economics and Management Wuhan University School of Business Nanjing University Department of biostatistics University of North Carolina

We consider a newsvendor problem with price-dependent demand, in either additive or multiplicative format. The newsvendor has two modes of purchasing： regular ordering at the beginning of the selling season and emergency ordering （if the realized demand exceeds the initial order quantity） at the end of the selling season. By stochastic comparisons, we systematically investigate the effects of demand magnitude and demand randomness on pricing and ordering quantity decisions as well as expected profit of the newsvendor, under both usual stochastic order （first order stochastic dominance） and convex order （less variable）. Our key findings include：（i） in contrary to the case where price is exogenous, a stochastically larger demand shock may even lead to a lower order quantity; （ii） a stochastically larger demand shock leads to a higher price for the additive demand case, but may lead to a lower price for the multiplicative demand case; （iii） a stochastically larger demand shock leads to a higher expected profit for both demand models; （iv） in general, a less variable demand leads to a higher expected profit for both demand models; and furthermore, a less variable demand shock has no effect on price for the additive demand model, but leads to a higher price for the multiplicative demand model. The implications of all these findings for pricing and order quantity are discussed in detail.

关键词： Price-dependent newsvendor stochastic comparison demand uncertainty pricing emergency supply option

Development trends of the national secure PNT system based on BDS

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Science China Earth Sciences 2023年第5期66卷 929-938页

作者： Yuanxi YANG Xia REN xiaolin JIA bijiao SUN State Key Laboratory of Geo-Information Engineering Xi’an 710054China Xi’an Research Institute of Surveying and Mapping Xi’an 710054China

Satellite navigation systems are *** guarantee the positioning,navigation and timing(PNT)safety of core infrastructure,it is necessary to establish a secure PNT system with hybrid physical *** this paper,the augmentations of the BeiDou satellite system(BDS)itself are analysed,namely augmentations through the BDS inter-satellite link,BDS geostationary orbit(GEO)and inclined geostationary orbit(IGSO)satellites,and BDS PNT services supported by low earth orbit(LEO)***,taking BDS as the core component,the comprehensive PNT infrastructure seamlessly covering deep space and deep ocean is described,consisting of the deep space PNT constellation,the sea-floor PNT sonar beacon network,and the ground-based low frequency and very low frequency(VLF)long wave radio ***,the key technologies of resilient PNT application matching comprehensive PNT and various autonomous perception PNT information are discussed,such as resilient PNT sensor integration,the resilient PNT functional model and the resilient stochastic *** a future development direction,the key factors of intelligent PNT services are analysed,including the intelligent perception of PNT application scenes,the intelligent optimization of PNT functional and stochastic models and the intelligent fusion of multisource PNT information.

关键词： Secure PNT system Comprehensive PNT infrastructure Resilient PNT application Intelligent PNT application

EFFECTIVE WIDTH AND DISTRIBUTION COEFFICIENTS OF MOMENT IN RC CONTINUOUS SLABS

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China Ocean Engineering 1990年第3期5卷 345-358页

作者： Tang, Taiping Hong, xiaolin Nanjing Hydraulic Research Inst Nanjing China

Using effective width of load and distribution coefficient of moment is a kind of simplified method in the design of continuous reinforced concrete slabs, which is widely used in engineering design. In this paper, through the analysis of load-bearing states of continuous slabs restricted by the main beams under concentrated loads, the effective width of load and distribution coefficients of moment of a continuous slab are obtained with the principle of equivalent loads. On the basis of the data of a 5-span continuous reinforced concrete slab, the formula of effective width is deduced and the distribution coefficients of moment for the mid-span and supports are given.

关键词： Beams and Girders Stresses Strain Gages Measurements

A reignited debate over the cell(s) of origin for glioblastoma and its clinical implications

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Frontiers of Medicine 2019年第5期13卷 531-539页

作者： xiaolin Fan Yanzhen Xiong Yuan Wang Department of Neurology and Cancer Center West China HospitalSichuan UniversityChengdu 610041China

Glioblastoma (GBM) is the most common and lethal primary neoplasm in the central nervous system. Despite intensive treatment, the prognosis for patients with GBM remains poor, with a median survival of 14-16 months. 90% of GBMs are primary GBMs that are full-blown at diagnosis without evidences of a pre-existing lessmalignant precursor lesion. Therefore, identification of the cell(s) of origin for GBM-the normal cell or cell type that acquires the initial GBM-promoting genetic hit(s)-is the key to the understanding of the disease etiology and the development of novel therapies. Neural stem cells and oligodendrocyte precursor cells are the two major candidates for the cell(s) of origin for GBM. Latest data from human samples have reignited the longstanding debate over which cells are the clinically more relevant origin for GBMs. By critically analyzing evidences for or against the candidacy of each cell type, we highlight the most recent progress and debate in the field, explore the clinical implications, and propose future directions toward early diagnosis and preventive treatment of GBMs.

关键词： glioblastoma cell(s) of origin neural stem cells oligodendrocyte precursor cells subventricular zone early diagnosis Introduction

Enabling silicon photoanodes for efficient solar water splitting by electroless-deposited nickel

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Nano Research 2018年第6期11卷 3499-3508页

作者： Jiheng Zhao Thomas Mark Gill xiaolin Zheng Department of Mechanical Engineering Stanford University Stanford 9430S USA

Enabling Si photoanodes for efficient solar water oxidation would facilitate the development of solar fuel conversion, but it is challenging owing to Si surface passivation via photo-induced corrosion in aqueous electrolytes. To overcome this challenge, most approaches have focused on improving the stability of Si by coating dense and thin protective layers using high vacuum-based techniques such as atomic layer deposition. However, these procedures are costly, making scalability for practical applications difficult. Herein, we report a modified electroless deposition （ELD） method to uniformly deposit protective and catalytic Ni films on Si wafers, resulting in efficient and stable Si photoanodes for solar water oxidation. The optimized Ni/n-Si photoanode achieves an onset potential of -1.09 V vs. a reversible hydrogen electrode and a saturation current density of -27.5 mA/cm^2 under AM 1.5 G illumination at pH 14. The ELD method is additionally capable of Ni deposition on a 4-inch n-Si wafer, demonstrating the first 4-inch Si photoanode. The solar water oxidation of the ELD-Ni/n-Si photoanode can be further improved by surface texturing, built-in n-p junctions, or coupling with more efficient catalysts.

关键词： Ni deposition electroless plating Si photoanode oxygen evolution reaction (OER) photoelectrochemical water splitting

An efficient stochastic algorithm for mid-term scheduling of cascaded hydro systems

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Journal of Modern Power Systems and Clean Energy 2019年第1期7卷 163-173页

作者： xiaolin GE Shu XIA Wei-Jen LEE Electric Power College Shanghai University of Electric Power Shibei Electricity Supply Company of State Grid Shanghai Municipal Electric Power Company Energy Systems Research Center University of Texas at Arlington

Due to the stochastic and correlated attributes of natural inflows, the mid-term generation scheduling problem for cascaded hydro systems is a very challenging *** paper proposes a novel stochastic optimization algorithm using Latin hypercube sampling and Cholesky decomposition combined with scenario bundling and sensitivity analysis(LC-SB-SA) to address this *** deal with the uncertainty of natural inflows, Latin hypercube sampling is implemented to provide an adequate number of sampling scenarios efficiently, and Cholesky decomposition is introduced to describe the correlated natural inflows among cascaded *** addition, to overcome the difficulties in solving the objectives of all the scenarios, scenario bundling and sensitivity analysis algorithms are developed to improve the computational *** results from both two-station and tenstation systems indicate that the proposed method has the merits in accuracy as well as calculation speed for the midterm cascaded hydro generation *** consideration of natural inflow correlation makes the formulated problem more realistic.

关键词： Cascaded hydro systems Mid-term scheduling Stochastic optimization algorithm Correlation Sensitivity

Neuroeconomics:Opening the “black box” behind the economic behavior

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Chinese Science Bulletin 2007年第9期52卷 1153-1161页

作者： YU Rongdun ZHOU xiaolin Department of Psychology Peking University Beijing 100871 China center for Brain and Cognitive Sciences Peking University Beijing 100871 China

This paper introduces an emerging interdisciplinary research field,namely neuroeconomics,which uses the neuroscientific methods to investigate the neural systems supporting economically relevant behaviors. Traditional economic research is restricted to the level of describing decision behaviors,leaving the cognitive mechanisms behind them unknown. It also fails to predict many decision behav-iors in real life. The combination of neuroscience and economics makes it possible to uncover the underlying mental and neural processes of economic decision making. This paper reviews the findings from the neuroeconomic literature on encoding of utility in the brain,showing that neuroeconomic re-search can test the validity of economic concepts and theories and provide new explanations to eco-nomic phenomenon. It discusses the important role the emotion plays in economic decision making and the associated neural evidence,suggesting the possibility of understanding the impact of emotion upon decision making by measuring the neural activity of emotion-related brain regions. This paper also summarizes neuroscientific studies on cooperation and trust in monetary games,pointing out that the trend of neuroeconomic research is to model the real life decision making in the laboratory with solid ecological validity. Neuroeconomics provides not only neuroscientific evidence for economic theories,such as the prospect theory,the regret theory and the game theory,but also foundations for more comprehensive and powerful economic models.

关键词：神经经济学脑成像经济行为神经心理学机制

Constrained Consensus of Continuous-Time Heterogeneous Multi-Agent Networks with Nonconvex Constraints and Delays

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Journal of Systems Science & Complexity 2022年第1期35卷 105-122页

作者： MO Lipo YU Yongguang REN Guojian YUAN xiaolin School of Mathematics and Statistics Beijing Technology and Business UniversityBeijing 100048China Key Laboratory of Power big Data of Guizhou Province Guizhou Institute of TechnologyGuiyang 550003China. Department of Mathematics Beijing Jiaotong UniversityBeijing 100044China

This paper studies the continuous-time constrained consensus of heterogeneous multi-agent networks with nonconvex input and velocity constraints,where each agent’s dynamic is modeled by a first-order or second-order integrator,the communication delays are assumed to be time-varying,nonuniform,bounded and the communication graph is changing over *** improved distributed control algorithm with time-varying gains is proposed and the heterogeneous consensus is changed into the homogeneous consensus by a coordination ***,it is proved that the constrained consensus can be reached by analyzing six connection cases between agents if the joint graph has a directed spanning tree over each bounded ***,simulations are done to show the correctness of the theorem.

关键词： Consensus continuous-time heterogeneous networks nonconvex constraints time-delays

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