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The ecosystems were classified into 13 types including valley rain forest, mountainous rain forest, tropical monsoon forest, mountainous coppice forest, mountainous ever green forest, tropical coniferous forest, shrubs, plantation, timber forest, windbreak forest, mangrove, savanna, and crop land, and then, the regulation services and their economic values of Hainan Island ecosystem were assessed and evaluated by terms of water-holding, soil-conservancy, nutrient cycle, C fixation, and windbreak function.

研究表明，2004年海南岛基于生态系统服务功能的绿色GDP为1042.80—1072.84亿元。其中传统GDP为769.36亿元、环境污染经济损失为10.54亿元、生态GDP为283.98—314.02亿元。经分析可知道：海南岛由于工业并不发达，其环境污染损失并不严重，只占传统GDP的1.4％；然而海南岛生态系统服务功能所提供的价值却是非常大，其中生态GDP是传统GDP的37％—41％。

Based on the fact that managing changes of data is the most neglected problem in the data warehouse metadata management, the paper proposes a model that is based on CWM and repository technology and can manage metadata of data warehouse.

针对元数据的变更管理是数据仓库元数据管理中最容易忽略的问题，本文提出一种基于数据仓库元数据管理系统的元数据管理模型。

This paper makes a brief introduction to the concept of metadata and describes a chronological development of metadata management. In addition, it mainly focuses on the development of data warehouse metadata managemet and repository technology and CWM Meta data model.

本文简述元数据的基本概念，回顾元数据管理的发展历史，重点讨论数据仓库元数据管理知识库技术以及CWM公共仓库元模型。

And then we bring forward a strategy of building metadata warehouse and a method founded on CWM metadata model, aiming to settle the problem which DW metadata can not be efficient utilized since they are short of unification.

并针对目前数据仓库系统共同存在的元数据缺乏统一规范，导致各种数据仓库工具之间的元数据因不统一而得不到有效利用的现状，提出基于CWM元模型的方法，构建元仓库。

First, according to the specialities of CWM metamodel and metadata, description logic DLid which supports identification constraints on concepts is proposed.

在基于公共仓库元模型建立元数据的过程中，参与建立元数据的团体的不同经验以及描述数据的不同视角不可避免地带来元数据的冲突和冗余等问题，然而CWM的图形化特点使之缺乏精确的语义，所以如何在其上进行推理以自动发现这些问题至今没有得到很好的解决。

This article use the improved integral inequalities with the deviate variable and some skills of inequalities as well as related knowledge about second-order differential equation,to obtain the following results: the classification of limit point case or limit circle case and boundedness for second order differential or difference equation with deviative variable,discussed the classification for certain n-order differential equations,Criteria for the classification of second order differential equation with deviative variable.

本文利用推广的具有偏差变元的积分不等式，结合不等式的一些技巧以及常微分方程的相关知识对一类二阶具有偏差变元的微分方程及一类二阶差分方程极限圆型的分类问题作了相关的研究工作，并且讨论了一类n阶具有偏差变元的常微分方程解的平方可积性与有界性和一类二阶非线性具有偏差变元的微分方程解的有界性。

Discount, the price of 860 yuan, 970 yuan, 780 yuan and 850 yuan.

折，价格分别为860元、970元、780元和850元。

The research of matrixes is continuously an important aspect of the quaternion division algebra. The purpose of this paper is to discuss the property of skew self-conjugate matrix. The definition of skew self-conjugate matrix on real quaternion division algebra is given.

四元数体上矩阵的研究是四元数代数理论中的一个重要方面，本文研究实四元数体上斜自共轭矩阵的性质，给出实四元数体上斜自共轭矩阵的定义。

Secondly, the analytic expressions of the error band boundary line for the s model of line segment are deduced, the parameter equations of the error band boundary are gotten.

考虑实用性和合理性，将线元看成离散点的集合，将线的不确定性看成点的不确定性的聚合体，将线元的位置不确定性模型看成以各点误差椭圆的长半轴E为半径的误差圆的聚合体，建立了以线元上任意点处的误差椭圆的长半轴E为带宽的线元不确定性ε模型。

On the basis of extension information net of a field of knowledge and CELTS-3, this paper targets at text-typed teaching resources, and elaborates the process of design and implementation of teaching resources organizing system based on information units, including a frame describing basic data of information characteristic, obtainment of characteristic words, distance between information units, as well as matching rules and algorithm of information unit, etc.

本文以文本类型教学资源为研究对象，在领域知识可拓信息网模型和CELTS-3的基础上，阐述了基于信息元的教学资源组织系统设计与实现过程，包括：信息特征元数据描述框架、特征词获取、信息元距离度量、信息元匹配规则以及匹配算法等。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。