比较原理

Roughness, surface crust, erodible fraction, stubble and time of efficacy are the indicators for appraisal. Results show that herd grazing has worst effects on soils; plowing is positive to the soils with lower erodibility and negative to sandy soils.(4) Prediction and control of wind erosion are the end of research. Two famous prediction models WEQ and WEPS were briefly introduced. On the basis of summarizing general theory and methodology for wind erosion control, some key measures are suggested for the region of Ningxia.

评价结果显示秋季耕作、春季耕作、火烧、放牧等活动使农田表层土壤风蚀加剧；（4）首先介绍了美国风蚀预测模型，在比较全面地总结前人研究的基础上，本文概括了防治风蚀的一般原理与方法，针对宁夏地区，除了改进土地利用方式外，注意可风蚀性不同的土壤应采取不同的措施。

On the basis of introduction and contrast of all kinds of developing and printing technology, we first discuss the LCOS display peculiarities and key optical techniques of the LCOS projection system. Then we make an analysis of the basic architecture and performance reeiiiirement of the digital picture printing system which uses LCOS as its displaying exposal system according to the practical application. And we propose the systemic blue print which includes USB transmission/SDRAM storage.

本论文在介绍主要的各类数码冲印技术的基础上，对相应的技术进行了比较，重点论述了LCOS冲印技术中LCOS液晶显示特性以及关键的投影系统的光学特性，在此基础上，结合实际应用，就LCOS投影技术在数码彩扩系统中的应用，详细分析了基工作原理和性能要求，提出了基于USB传输/SDRAM缓冲的系统设计方案，实现了完整的LCOS数码冲印系统的设计与调试。

first of the paper to introduce the principle of the computerized accounting ,point out the limitations of the computerized accounting ,then analyzed three characteristics of the finance management of the ERP system : Instant, integration and farseeing, finally compare the differences in financial management between computerized accounting and ERP system .

本文首先介绍了会计电算化的工作原理，指出了会计电算化的局限性；然后分析了ERP系统财务管理的三个特点：即时性，集成性和远见性；最后比较了会计电算化和ERP系统的财务管理之间在应用中存在的差异。

Based on the keystone of EVA valuation model,it sets up some frondose material valuation models,while comparing EVA model with some conventional valuation models.

从剩余收益估价模型的理论框架及其演变形式出发，在论述EVA估价法基本原理的基础上，创建了相应的评估模型，并将经济利润EVA估价法与现行的传统估价法进行了比较。

This paper introduces the residual income valuation model′academic framework and various transfigurations. Based on the keystone of EVA valuation model,it sets up some frondose material valuation models,while comparing EVA model with some conventional valuation models.

从剩余收益估价模型的理论框架及其演变形式出发，在论述EVA估价法基本原理的基础上，创建了相应的评估模型，并将经济利润EVA估价法与现行的传统估价法进行了比较。

This ***** introduces the residual income valuation model′academic framework and various transfigurations. Based on the keystone of EVA valuation model,it sets up some frondose material valuation models,while comparing EVA model with some conventional valuation models.

从剩余收益估价模型的理论框架及其演变形式出发，在论述EVA估价法基本原理的基础上，创建了相应的评估模型，并将经济利润EVA估价法与现行的传统估价法进行了比较。

Four chlorite geothermometers, which are universally applied, are introduced and compared in this paper. Main effort has been devoted to discussing the necessity of Fe/ adjustment on chlorite geothermometer by reviewing ion substitution vectors and by comparing calculation errors.

介绍了四种应用最为广泛的绿泥石成分温度计的原理，并从离子替代规律和比较研究的角度着重讨论了近年来关于绿泥石成分温度计校正的必要性。

The research of this thesis is under the circumstances that the international shipping center of Shanghai builds Yangshan deep water port project, first of all, through its SWOT analytical method analyze Shanghai maritime affairs situation, maritime affairs office existing boat policy, Yangshan deep water port hydrometeorological situation, analyze the present main ship type, to explain the background of the choice the ship the small waterline, to put forward the necessity of building small water-plane area twin hull maritime affairs patrol ships. Then, it introduces the principle, characteristic of the small waterline, and has analyzed the domestic and international state of development of the SWATH ship, and conclude that it is feasible to build SWATH maritime affairs patrol ship technical, through the research and analyze of design at home and abroad,; Then it analyzed the application of the SWATH ship in maritime affairs manage both at home and abroad, put forward the preliminary scheme, and carry on research to the economic performance of technology of the scheme, through putting forward the preliminary model of plan of design to main yardstick and selecting type of host computer finally after relatively optimize, and confirm design specifications .

本文的研究是在上海国际航运中心建设核心工程洋山深水港的大前提下，首先，通过利用SWOT分析方法分析了上海海事局面临的形势，对上海海事局现有航政管理船舶现状进行分析，对洋山深水港海域的水文气象情况进行了调研，对当前主要船型进行分析，对选择小水线面船的背景加以阐述，提出建设小水线面双体海事巡逻船的必要性：接着，对小水线面船的原理、特点加以介绍，并对小水线面船国内外发展状况进行了分析，对国内设计建造小水线面双体海事巡逻船的技术可行性进行了研究分析，得出国内设计建造小水线面双体巡逻船在技术上是可行的；然后对国内外应用于海事管理等工作的小水线面船型进行分析，提出初步的方案，并对方案的技术经济性能进行研究，通过对主尺度和主机选型等进行比较优化后最终提出初步的设计方案模型，并确定设计任务书。

Theoretically, its calculation complexity is studied, while it is tested empirically by learning multi-samples generated randomly. The comparative analysis and applications show it has some merits of rapid searching and good clustering effect. B3. An immune network optimization algorithm with information feedback, which can solve special complex function optimization problems with high dimensions which objective functions are formed by summing multi-subobjective ones, is constructed based on the clone selection principle and the immune network regulation of the idiotype immune network.

为了对免疫系统中抗体如何学习抗原特征的整体行为有一定的认识，从单个抗体识别抗原及多个抗体并行识别抗原的特征出发，利用免疫应答的相关原理及免疫细胞的免疫功能设计了适合于批量样本聚类的抗原特征学习算法，理论上分析了其计算复杂度，获得了此算法中的关键参数与其搜索性能的关系；应用上，该算法通过对实际的多样本学习，获得了搜索速度快及聚类效果好的优点，比较分析表明这种方法是可行的和有效的。

A simple artificial immune network algorithm, suitable for clustering problems with a small quantity of samples, is obtained by using the idiotype immune network. Further, a fuzzy immune network classification algorithm applied to sample classification learning is proposed by uniting the algorithm and fuzzy logical rules.

其次，利用抗原群及抗体群的作用关系，结合免疫记忆细胞的记忆功能，并借助于克隆选择原理、免疫网络的调节机制及约束条件处理方法，设计约束多目标优化免疫算法处理约束多目标优化问题，收敛性论证、性能测试、比较及实际应用表明此算法是有效的。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。