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STUDIES OF PREDATION AND SIMULATION MODELOF DWARF SPIDER ERIGONIDIUM GRAMINICOLUM TO COTTONBOLLWORM HELIOTHIS ARMIGERA III. THE FURTHER STUDYOF THE SIMULATION MODEL
草间小黑蛛对棉铃虫幼虫的捕食作用及其模拟模型的研究——Ⅲ.模拟模型的进一步研究

LI CHAO,<br>
生态学报 , 1983,
Abstract: This paper consists of two parts. In the first part, a modified method of the functional response parameters was presented by adding the cage experimental results, which makes the calculated results approach natural conditions better. On the basis of the above metio-ned results, we primarily discuss the behaviour of the four possible simulation models describing the interaction system of the dwarf spider, cotton bollworm and cotton aphid by the results of numerical simulation in the second part. The researc...
STUDIES ON PREDATION AND SIMULATION MODEL OF DWARF SPIDER ERIGONIDIUM GRAMINICOLUM TOCOTTON BOLL WORM HELIOTHIS ARMIGERAII. STUDIES ON ONE-PREDATOR-MULTI-PREYSPECIES INTERACTING SYSTEM
草间小黑蛛对棉铃虫幼虫的捕食作用及其模拟模型的研究——Ⅱ.捕食者——多种猎物系统的研究

Li Chao,<br>
生态学报 , 1982,
Abstract: This paper suggests an equation to estimate the total amount of prey capturedand a method to estimate the parameter of preferencewhereand also a simulation model under the existing of an alternative food species (cotton aphid)The results of predation experiments carried out in big cages can be described by following the modelAnd the more the prey species exist with one predator species, the lower the predation rate to a special prey species is.The research on the behaviour of the simulation model shows some...
STUDIES ON PREDATION AND SIMULATION MODELOF DWARF SPIDER ERIGONIDIUM GRAMINICOLUMTO COTTON BOLLWORM HELIOTHIS ARMIGERAI. STUDIES ON PREDATOR-ONE PREY SYSTEM
草间小黑蛛对棉铃虫幼虫的捕食作用及其模拟模型的研究——Ⅰ.捕食者-单种猎物系统的研究

Li Chao,<br>
生态学报 , 1982,
Abstract: The dwarf spider is of non-compensative predation on cotton bollworm in cotton field. But the'population density variation of the spider which will be influenced by cotton bollworm is not too large. The functional response of the dwarf spider to cotton bollworm can be described by using Holling(1959a)'s equation. The different conditions of experiment will produce the different effects on the estimation of parameters of the functional response. The best prey size for feeding of the adult female spider is th...
A COMPUTER SIMULATION MODEL FOR EGG AND LARVAE STAGES OF COTTON BOLLWORM
棉铃虫卵及幼虫阶段动态的一个计算机模型

Li Chao,<br>
生态学报 , 1986,
Abstract: This paper presents a computer simulation model for egg and larvae stages of cotton bollworm (Heliothis armigera) . This model is essentially a life table model according to the logical relationship of development and survival . The input information of the model is the amount of the white egg day by day. And it's output involves the population size of every stage and age. The simulation method is as follows: white egg when i = 0; j = 1where n(t)i,j, is the insect amount that in the i th stage and j th age ...
A NEW METHOD FOR ESTIMATING THE BASE TEMPERATURE OF THE INSECT DEVELOPMENT
昆虫发育起点温度估值的一种新方法

Li Chao,<br>
生态学报 , 1985,
Abstract: This paper presents a simpler method for estimating the base temperature of the insect development by using the optimum seeking method. The objective function iswhere ki, =Ni(Ti-T0);n = the number of the temperature treatment;T0 = base temperature;N, = average duration of the ith treatment;T, = environmental temperature of the ith treatment.The point T0 which corresponds to the minimum of the objective function is the expected value of the base temperature. Thus, the corresponding accumulative heat unit K i...
Expectation maximization method for parameter estimation of image statistical model
图像统计模型参数估计中的期望最大值算法

Li Xuchao,<br>
中国图象图形学报 , 2012,
Abstract: Expectation maximization (EM)algorithm for parameter estimation of image statistical model is one of the striking research fields in recent decades.Based on the analysis of the EM algorithm,combining the current application research in parameter estimation of image statistical model,analysis and comparison are conducted in terms of the three improvement schemes of standard EM algorithm.In this paper,integrating image restoration,segmentation,object tracking and the fusion of other evolution optimization algorithms,through three aspects,such as the selection of missing data sets,the statistical model establishments of missing and incomplete data sets,and parameter estimation of image statistical models,as well as the advantages and disadvantages of the corresponding EM algorithm are exponded.The structure and complexity of EM algorithm,so far as to success or failure,are directly determined by the selection of missing data and the expression form of incomplete data.In the end,challenges and possible trends are discussed,and extensive applications of EM algorithm to parameter estimation of statistical model with missing data are pointed out.
INVESTIGATION OF THE STRUCTURES OF ZnTe/GaSb BY X-RAY TRIPLE-AXIS SCATTERING AND CRYSTAL TRUNCATION ROD
ZnTe/GaSb结构的X射线三轴晶散射和晶体截断杆研究

LI CHAO-RONG,<br>
物理学报 , 1997,
Abstract: 用X射线三轴晶散射和晶体截断杆扫描研究了不同工艺条件下分子束外延生长的ZnTe/GaSb结构.X射线晶体截断扫描显示,从衬底表面清洁温度到生长温度退火过程中采用Zn气氛的样品具有清晰的干涉条纹,而在Te气氛下退火则晶体截断扫描没有干涉条纹.在倒易点004,115附近X射线散射的二维强度分布图显示,两种条件下生长样品的晶格失配应力都没有弛豫.二维等强度分布图和沿[110]方向的扫描,都显示在Te气氛下生长的膜具有较强的漫散射,并且分布较宽.这种漫散射来源于界面相Ga2Te3<
THE INFLUENCE OF DISTRIBUTIVE JUSTICE AND PROCEDURAL JUSTICE ON JOB BURNOUT
分配公平与程序公平对工作倦怠的影响

Li Chaoping,Shi Kan,<br>,时勘
心理学报 , 2003,
Abstract: Based on 294 samples from three companies, this study first tested the psycholog ical property of MBI-GS and made some revisions according to the result. Then 52 4 employees from six companies were invited to join the final survey. CFA was us ed to confirm the construct validity of MBI-GS. T-test and One-way ANOVA showed organizational justice and job burnout was influenced by demographics variables. Hierarchical regression analyses indicated that organizational justice was a po wer predict of job burnout beyond demographics variables. Dominance analysis fur ther indicated that when predicting Emotional Exhaustion 65.91% of the predicted variance was attributed to distributive justice. When predicting Cynicism 56.07 % of the predicted variance was attributed to procedural justice.
The Structure and Measurement of Transformational Leadership in China
变革型领导的结构与测量

Li Chaoping,Shi Kan,<br>,时勘
心理学报 , 2005,
Abstract: Data was collected from a diverse sample of 249 managers and employees from different companies using open questionnaire,and then were subjected to content analysis to identify major forms of transofmrational leadership in China.Results revealed 8 dimensions of transformational leadership.The Transformational Leadership Questionnaire(TLQ) was developed through expert discussions.Exploratory Factor Analysis(EFA) of data from a sample of 431 employees showed that transformational leadership was a four-dimension construct in China,which included Morale Modeling,Charisma,(Visionary) and Individualized Consideration.Confirmatory Factor Analysis(CFA) of data from another sample of 440 employees further confirmed TLQ's factorial validity.Internal consistency analyses and hierarchical regression analyses showed that TLQ had suitable reliability and high validity.
Auto-correlation Function of Generalized Jacobi Sequences
广义Jacobi序列的自相关函数

Zhou Xuan,Li Chao,<br>周璇,
电子与信息学报 , 2005,
Abstract: Correlation function is the important parameter for studying the security of sequence cipher. This paper discusses the auto-correlation of two classes of generalized Jacobi sequences and gives their values of auto-correlation. The results show that two classes of generalized Jacobi sequences have good auto-correlation properties.
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