科学与技术

PDM is the abbreviation of Product Data Management. It is a valid method that relies on the IT technology to realize the optimization of enterprise management, which comes from the combination of the scientific management framework and the realistic enterprise problem, the computer technology and the enterprise culture.

PDM是Product Data Management的缩写，它是依托IT技术实现企业最优化管理的有效方法，是科学的管理框架与企业现实问题相结合的产物，是计算机技术与企业文化相结合的一种产品。

In addition, dredger operators are required to understand dredging processes and to be familiar with the...

本文针对疏浚技术培训与科学研究的需要，应用计算机技术和图形技术，对绞吸式挖泥船小型疏浚仿真器的功能、系统组成、数据流程以及疏浚数学模型等方面进行了探索，设计了小型疏浚仿真器，本文工作对于开展疏浚技术岗位培训，用仿真手段研究疏浚过程动态特性是有帮助的。

This study that observed the expression and distribution of 4 apoptotic factors, relation apoptotic factor with apoptosis, changes of T and B subgroup, and changes of molecular pathology in 14 cows suffering from enzootic bovine leucosis from several resides was detected by histochemistry, TUNEL technology, immune-fluorescent flow cytometry and so on. The aim of this experiment supplies theoretic basis for preventive and therapy of EBL, and consult dates for T lymphoid cell leucosis of human being .

本研究检查并剖检了14例临床与实验室诊断为EBL的病牛，观察分析了肿瘤发生的情况和特征，采用免疫组织化学ABC法、原位末端标记TUNEL技术和免疫荧光流式细胞检测法等技术，从EBL肿瘤细胞凋亡特性入手，围绕4种凋亡因子和几种免疫相关因子与EBL肿瘤发生的关系及其在诊治方面的应用进行了首次有价值的探索，其目的在于为防治EBL提供科学的理论依据，同时，也将为人类T细胞白血病Ⅰ。

Course Content:The main part of this course is about infinitesimal calculus and ordinary differential equations,including :functions and limits,derivative and differential integral and their application,differential methods of function of several variables and its application,heavy integral,curve integral,camber integral,infinite progression and differential equations.

课程内容：学科教学法与CAI研究与实践是师范计算机专业教学系统的重要组成部分，学科教学法与CAI研究与实践课程是计算机科学教育的主要内容。通过本课程的学习使学生掌握现代学科教学法与CAI研究与实践的基本概念，基本原理和基本方法；能设计并使用所学的教学理论进行中学信息技术课程的教学设计，试讲，试教。课程内容：以微积分学和常微分方程为主干，介绍函数与极限，导数与微分，中值定理。不定积分，定积分及其应用，多元函数微分法及其应用，重积分，曲线积分与曲面积分，无穷级数及微分方程等。

It is a basic course to ones who will be interested in relative research and engineer technology.

课程简介：本课程主要涉及传感器的原理与应用，通过教学将使学生从理论和实践上掌握常见的各类传感器，主要是新型结构的固态传感器的原理、构成及其在科学技术和工农业生产各领域的应用，并了解现代传感器技术的发展动向，为从事与本专业有关的科学研究和工程技术等工作打下一定的基础。

Taking Changling County, Zhenlai County and Da'an City of Jilin Province as researchareas, based on remote sensing data, graphics operation and spatial analysis are carried out indifferent points of views, including temporal, spatial, scale and landscapeetc; all aspects analysis of this dissertation are abstractively expressed by digital graphics andseries of curves which are not stick to one pattern to discussing multi-dimension andcomplicated attributes of the salinized process. Linking up temporal-spatial characteristicswith landscape indices while combining mathematics model and Geo-informatic TUPUmodel, this dissertation puts forward the fundamental frame: temporal-spatial evolvementpattern, spatial extension process analysis and landscape characteristics analysis of salinizedland. Temporal-spatial evolvement pattern analysis extracts the essential quantity features andtransformation modes of salinized land, and also analyzes patches spatial geometricalparameters scale feature; spatial extending process analysis discusses the change rate andecological modes; landscape feature analysis utilizes landscape graphics indices to describesalinized land microcosmic graphics features and changes.

信息图谱模型为土地盐碱化研究提供了一种谱系化、定量化与定位化相结合的研究方法，本文选取吉林省西部盐碱化典型区域长岭县、镇赉县、大安市作为研究区，以遥感影像为基础数据，在GIS技术支持下，从时空变化、尺度效应、景观特征等多个角度对盐碱化土地进行图形运算、空间分析，通过不拘一格的数字化图形、曲线系列抽象表达出不同维度上的特征与规律，探讨土地盐碱化过程的多维性与复杂性，将盐碱化土地时空特征与景观特征衔接、数学模型与图谱模型结合，以盐碱化土地时空演变基本模式、空间扩展过程和景观特征分析为框架构建盐碱化土地信息图谱模型研究体系，发挥图谱模型数据挖掘、知识发现的特长，将宏观动态变化与微观特征相联系，进一步挖掘土地盐碱化过程与人类活动影响的关系，为探索研究区盐碱化土地成因、过程，预测其未来发展变化趋势及其对环境影响提供相关科学依据。

Based on established eligibly, professional teachers' education technology training foundation, forming a complete and functional system, as well as based on the document and the regulation of the Ministry of Education: The plan of developing education action during 2003-2007, The regulations for teachers continions education and The plan of construction of educational technology capacity for all teachers in our country, to establish the terms and requirement of the training base, and constitute a base for teachers' public study and support a service system, to improve education technology training level for middle school teachers and the primary school teachers.

基于建设合格的、专业化的教师教育技术培训基地，形成体系完整、功能健全的培训体系为出发点，并以教育部《2003—2007年教育振兴行动计划》、《中小学教师继续教育规定》和&全国中小学教师教育技术能力建设计划&等文件和规定为依据，科学制定培训基地条的件与要求，构建教师公共学习平台和支持服务体系，整体提高中小学教师教育技术培训水平，这将是本篇论文的思想指导。

During the researchperiod, the researcher collects a great number of literatures and research data. On theadvanced bases, the paper summary the achievement of previous development innatural disaster risk research both in domestic and abroad for references. Starting fromearth systemic and scientific thought, the paper makes analysis on the maincharacteristics of natural disaster risk system and probes into the theories and methodsof natural disaster risk assessment. The paper apply Remote Sensing and GIStechniques to take apart the dynamic assessment ways and modes of natural disasterrisk in diverse scales cities, in order to provide scientific basis for urban disaster riskdecreasing and risk decision-making management.

在国家自然科学基金项目&中国沿海城市自然灾害风险评估体系研究&和重点项目&沿海城市自然灾害风险应急预案情景分析&的资助下，调查分析了中国沿海典型城市自然灾害发育特征及其风险管理，获得了大量的文献资料与数据基础上，借鉴国内外自然灾害风险研究进展的成果，从地球系统科学思想出发，分析了典型城市自然灾害风险系统主要特征，探讨城市自然灾害风险评估方法与理论，并应用遥感和GIS技术，剖析城市不同尺度下的自然灾害风险动态评估途径和范式，为城市综合减灾降险和风险管理决策提供科学依据。

The follwing three aspects are considered. First, gene has been regarded as the research objective and a history of genetics is the history of further understanding of the substantiality of the gene. Second, based on the highly developed molecular genetics, the genetics of scientific morphology is changed into the biological technology of technological morphology. And third, the development of the biological technology sufficiently shows the dual character of the new technology as a two-bladed sword, and it...

讲述3个方面：第一，遗传学研究者自始至终把基因作为研究对象，一部遗传学史，就是人们对基因实体性认识不断深化的历史；第二，在分子遗传学高度发展基础上，科学形态的遗传学转化成技术形态的生物技术，作为一种活跃的生产力走向了产业化道路；第三，生物技术的发展充分显示新技术犹如双刃剑的两面性和对社会伦理的冲击与挑战，对社会提出了新课题。

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我们的技术能手有重大作家散文、论文写作经验等方面的研究，为科学、动物学、人类学、艺术、人物传记、商业、计算机、文化、经济、教育、英文、环境科学、历史、电影与电视、地理、政府与政治人类性行为、法律问题、文学、医学、音乐、心理学、社会问题、体育休闲、科技、戏剧等多。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。