查询词典 marginal distribution density function

The purpose of chapter 4 is to study a predator-prey model with sublinear functional response function and sublinear density control function. Some results dealing with stability of equilibrium, nonexistence , existence as well as uniqueness of the limit cycle around the positive equilibrium of the model are obtained.

第4章分析了一类食饵的相对增长率和功能反应函数均为次线性函数的食饵-捕食者模型，通过分析，得到了该系统的正平衡点全局稳定和存在惟一极限环的充分条件。

In the last chapter, we consider a predator-prey model with sublinear functional response function, sublinear density control function and constant stocking rate. The properties of equilibrium, existence and uniqueness of the limit cycle around the positive equilibrium investigated.

第5章讨论一类食饵具常数存放率的功能性反应模型，研究了模型的平衡点的性态，系统的全局稳定性，极限环的存在性和唯一性，获得了一系列较为完整的结论。

This means that a state function, such as specific internal energy, is a property that always has a value; it may therefore be expressed mathematically as a function of other thermodynamic properties, such as temperature and pressure, or temperature and density, and its values may be identified with point on a graph.

这意味着，一个国家的功能，如具体的内部能源，是一种财产，始终有一个价值；因此，可以作为一种数学表达功能的其他热力学性质，如温度和压力，或温度和密度，其值可识别点图表。

BACKGROUND: Synaptic density, a key index of structure and function of brain tissues, is related to cognitive function.

背景：突触密度是脑组织结构和功能的重要指标，与认知功能密切相关。

Combined GIS with MATLAB, the automatic extraction of RS and geography information of sample plots was realized.5. Introduced the resist-PCA estimation method to build the estimation formula on crown density, stock volume and diameter breast height, good forecast accuracy was achieved and the deficiency of traditional LMS parameter estimation was made up.6. The estimation process software of the model was developed, including data pretreatment, weight function selection, LMS estimation, PCS estimation, resist-PCA estimation, accuracy assessment and other function models, in order to c

摘要4、结合Gls和MATLAB技术实现对样地遥感信息和地理环境信息的自动提取。5、引入抗差主成分估计方法建立郁闭度、蓄积量、胸径的估测方程，取得了良好的估测精度，弥补了传统最小二乘参数估计的不足。6、开发了模型估测处理软件，包括数据预处理、权函数选择，LS估计，主成分估计、抗差主成分估计、精度评价等模块，实现数据处理、模型研建与精度评价的自动化、一体化。

The effects of hot/dense hadronic environment on the spectral function of p meson is analyzed. It is found that hot/dense environment plays an important role to the spectral function: when the temperature or the density is not too high.

本文基于虚时形式的有限温度场论，分析了热密强作用物质环境对ρ介子性质的影响，计算得到了ρ介子的谱函数。

The Lagrangian function is introduced to infer the analytical form of the ME density function.

算例表明，该方法避免了复杂的数值计算，可以满足岩石工程随机可靠性分析的要求。

China should make use of resouce distribution function of public finance, study the foundation of compensation policy of coal resource exploitation, to resolve the problems of enterprises' cost socialization and internal cost externalization in resource exploitation, perfect the market distribution mechanism of coal resource, urge enterprises to apply measures of saving energy and decreasing consumption, lead and encourage the whole society to abstemiously use coal resource, realize the reasonabe expoilatation and using of Chinese coal resource.

应利用公共财政资源配置职能，研究建立煤炭资源开发的补偿政策和措施，解决资源开发中长期存在的企业成本社会化、内部成本外部化问题，完善煤炭资源市场配置机制，促使企业采取措施节能降耗，引导和鼓励全社会节约使用煤炭资源，促使我国煤炭资源合理开发利用。

In this paper, simulated the air flow by use the fluid flow theoretics, based on the configuration and function of F8 distribution valve, established the air brake system model with F8 distribution valve.

本文采用气体流动理论模拟制动系统内空气的流动，并基于F8阀结构和功能建立了带有F8阀的列车制动系统物理模型。

This reactor has asymmetrical heat resource distribution. The Bessel function distribution is at radial direction.

此种堆型具有不均匀内热源的分布（径向为贝塞尔函数分布，轴向为余弦函数分布）。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。