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The recent advance on this topic is reviewed for the last ten years, including superstructural development of long-span steel bridge, mechanics characterization study of orthotropic deck, material properties and pavement system of steel bridge.
本文综述评价了近10年来该方面的研究进展,内容包括:大跨径钢桥桥面结构演化、正交异性钢桥面力学特性的研究、材料研究和钢桥面铺装体系研究等方面,并对进一步研究提出一些建议。
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The field survey, sampling, testing and collection of the geological and hydrogeological data were done for the description of evolutional geological structure and sedimentation and division and definition of water-bearing system and hydrogeological age and hydro-pressure system and study of the vadose field and chemical field. By establishing the rammer numerical model, the sandy mudstone thickness recovery model, water-rock interaction particle translative simulation and hydrogeochemical simulation, and using geological statistics, analogism and complex analysis method, water circulation and water exchange of each layer in each study stage have been researched, The results show the regularity of the vadose field evolution in different stages.
本项以野外调查、采样测试和搜集的地质、水文地质大量第一性资料为依据,在论述盆地的地质构造演化、沉积演化的基础上,以含水系统、水文地质期和水压系统类型的划分和定位为研究的切入点,渗流场、化学场为研究主线,通过建立压实数学模型、砂泥岩恢复厚度数学模型、水岩作用物质成分转移的实验模拟、水文地球化学模拟、地质统计法、类比法、综合分析法等方法,模拟计算了各研究层在各研究时期水循环特点和水交替强度,揭示了各研究层渗流场在地史进程中形成演化的规律性。
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Moreover, TI would ever do benefit to enterprises architecture capability, and help enterprises build undependent technological capability.The paper takes the EMI as the object with the empirical research blending with normal research.
本文以装备制造业为研究对象,采用以实证研究为主的研究方法,实证研究与规范研究相结合,将装备制造业产品技术集成方法的实施过程分为产品概念开发和产品技术开发两个阶段。
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REITs, Taiwan is way behind very much; the type of merchandize and figure are also inferior to U.S.A. far , regarding Taiwan as the difficulty that the research object has materials to collect , so research this choose the monthly REITs rate of returns of U.S.A between July of 1983 and June of 2006 , and make use of ARMA-GARCH model on the time series to estimate the expand inflation and uncertainty of expecting to inflation. Moreover, by assaying and revising a false return question of parameter with VAR model and Granger cause and effect, studying the relation of REITs rate of returns, inflation and unexpecting inflation. Furthermore, discussing if the invest in REITs would be effected of resist the inflation; hoping this studying would be the reference of REITs remuneration for Taiwan in the future. The following informations contain the whole result of studying
然而台湾相较於美国REITs起步较晚,商品种类与数目亦远不及美国,以台湾为研究对象有资料搜集之困难,故本研究选取美国1983年7月~ 2006年6月之月REITs报酬率,并利用时间序列上之ARMA-GARCH模型来估计预期通膨及通膨不确定性;及以VAR模型及Granger因果检定修正变数间假性回归问题,研究REITs报酬率与通膨及通膨不确定间之关系,及探讨投资於REITs是否具有抗通膨之效果,希望作为未来台湾研究REITs报酬之参考,兹将研究结果汇整如下
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The research which is the important part of the tunable erbium-doped fiber laser is composed of two main parts: 1. the gain part of the tunable erbium-doped fiber laser, which in fact is an erbium-doped fiber amplifier, its output characteristics are discussed both in theory and experiment, and the differences are also discussed between theory and experiment; 2. the saturated absorber part of the tunable erbium-doped fiber laser, also the part to narrow the line width of the fiber laser. The line-width narrowing mechanism in fiber laser induced by unpumped Er-doped fiber is presented from the aspect of coupling wave equation, and the main factor is considered as the standing wave induced by interference. The line-width is narrower when the standing wave is stronger, and the narrowing effect disappears with the disappearance of the standing wave. In the experiment, when adding a Faraday mirror in the laser cavity to remove the standing wave , the narrowing effect disappears. So the theory is proved by the result of the experiment.
本课题的研究内容是集成光学声光可调谐掺铒光纤激光器的重要组成部分,主要分两部分:1、声光可调谐掺铒光纤激光器中增益部分的研究,相当于对掺铒光纤放大器的研究,理论上对掺铒光纤放大器的输出特性进行分析,实验上实现了掺铒光纤放大器系统,并将实验数据与理论计算数据进行对比,分析了误差产生原因;2、声光可调谐掺铒光纤激光器中饱和吸收体部分的研究,即压窄光纤激光器输出线宽的研究,从耦合波方程出发,理论上解释了未泵浦掺铒光纤压窄光纤激光器线宽的原理,分析了影响该作用的主要因素是未泵浦掺铒光纤中相对传输的光干涉形成的驻波:驻波越强,压窄效果越好,相反当没有驻波时,没有压窄效果,在实验上通过在激光器腔内加入法拉第旋转镜使驻波消失,同时压窄效果消失,从而验证了理论分析的正确性。
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So far, Chinese marketing society's researches on the innovation of its enterprise marketing management are partial and unsystematical.
以往的研究基本上分成理论研究和实际研究两个独立的部分。专家学者主要侧重理论研究,而实务工作者则主要侧重实际问题研究。
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Strategies and approaches of the integrated traditional Chinese and Western medicine in preventing and treating CKD are:(1) enhance the study of optimized scheme for single entity;(2) accelerate the step of new drug exploitation;(3) augment the study of action mechanism of traditional Chinese medicine in treating CKD;(4) strengthen the study of the mechanism of Chinese crude drug which is poisonous to kidney and its prevention and cure;(5) utilize the systems biology to study the essence of kidney;(6) establish a guideline for integrated traditional Chinese and Western medicine in prevention and treatment of CKD;(7) preach up the general knowledge of CKD, pay attention to mass screening and early prevention of CKD.
中西医结合防治慢性肾脏病有优势,但也存在不少困惑。中西医结合防治慢性肾脏病的思路和方法是:(1)加强单病种优化方案的研究;(2)加强确有疗效的新药开发研究;(3)加强中医药治疗肾脏病作用机制的研究;(4)加强有毒中药肾损害的机制及防治研究;(5)利用系统生物学的方法,探索中医肾本质的研究;(6)组织编写《慢性肾脏病中西医结合防治指南》;(7)大力宣传,重视普查,早期预防。
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Strategies and approaches of the integrated traditional Chinese and Western medicine in preventing and treating CKD are:(1) enhance the study of optimized scheme for single entity;(2) accelerate the step of new drug exploitation;(3) augment the study of action mechanism of traditional Chinese medicine in treating CKD;(4) strengthen the study of the mechanism of Chinese crude drug which is poisonous to kidney and its prevention and cure;(5) utilize the systems biology to study the essence of kidney;(6) establish a guideline for integrated traditional Chinese and Western medicine in prevention and treatment of CKD;(7) preach up the general knowledge of CKD, pay attention to mass screening and early prevention of CKD.
慢性肾脏病已经成为全球性公共健康问题,其患病率和病死率高,并明显增加心血管疾病的危险性,产生巨额的医疗费用。中西医结合防治慢性肾脏病有优势,但也存在不少困惑。中西医结合防治慢性肾脏病的思路和方法是:(1)加强单病种优化方案的研究;(2)加强确有疗效的新药开发研究;(3)加强中医药治疗肾脏病作用机制的研究;(4)加强有毒中药肾损害的机制及防治研究;(5)利用系统生物学的方法,探索中医肾本质的研究;(6)组织编写《慢性肾脏病中西医结合防治指南》;(7)大力宣传,重视普查,早期预防。
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The content of each part follow as: In the first chapter, as start point and base of the paper, this part focuses on the basic study ofdefinition characteristic of NO, and the existing base of NO-E-Commerceenvironment; In the second one, this part studies the theory base of NO comprehensively applying the theories of core competence competent strategy and transaction cost; Chapter three studies the NO from the coordination of NO, and gives the structure clarification and characteristic of NO firstly, at the same time, put forward the concept of Virtual Enterprise Cluster; Based on such conclusion, studies the model of NO from life cyc organization level process and value chain, and operational mode; In Chapter four, a theoretical explanation was addressed on the above structure by modeling NO with game theory and graphic theory; In the fifth chapter, on the bases of analysis of NO operational risks, coordination mechanism of NO was studied by individually modeling the NO without core and NO with core, and then put forward the solution for coordination mechanism of NO; As an important component of coordination mechanism of NO, Chapter six explored some basic concept of trust and importantly put forward the way of how to build trust in NO, especially investigated the supporting function of valid reputation mechanism of NO for the trust building, importantly an operational method on building reputation mechanism and evaluation method in NO were given; The last chapter applied theconclusion of the paper to investigate the famous trade Web-SUNBU.
全文共分为七章,主要内容如下:第一章作为全文的理论出发点和基础,围绕网络组织的定义、特征以及网络组织生存基础--电子商务环境等方面对网络组织的基本概念进行了阐述;第二章综合运用核心能力、竞争战略和交易费用理论对网络组织产生的理论基础进行阐述;第三章首先从组织协调的角度对网络组织进行了研究,给出了网络组织的结构,分类和特征,同时并给出了虚拟企业群簇;然后在此基础上分别研究了网络组织的生命周期模型、层次模型、过程模型、价值链模型,以及运行模式;第四章综合运用博弈论、图论的相关知识,通过构建网络组织的模型,对上一章所研究的网络组织结构的形成机理给出了一种理论解释;第五章在分析网络组织运行风险的基础上,分别建立无盟主网络组织的博弈论模型和有盟主网络组织的博弈论模型,详细研究了网络组织的协调机制,然后给出了网络组织协调机制的解决方案;第六章作为网络组织协调机制的重要组成部分,本章在讨论了网络组织中建立信任机制的必要性的基础上,研究了网络组织信任关系的类型,提出了在网络组织中如何建立信任机制。
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On the stock experiments, the followings are studied: the daily changes of sap, the changes of sap during the grafting period, the differences among the stocks and the controlling of sap etc; The influence of temperature and humidity on grafting, the effective time of grafting and grafting method are studied on the grafting and callusing experiment; It could got a deep and whole knowledge of which how factors affect the healing process of grafting by studying the influential mechanism of them, and it could provide some physiological and biochemical bases for this kind of study, so that this kind of study should carry out deeply and systematically.
在砧木方面,研究了伤流日变化和嫁接时期变化动态、砧木间伤流量的差异、伤流控制等。在嫁接愈合方面研究了湿度、温度的作用,嫁接有效时期,嫁接方法等。通过研究各种影响因子的作用机制,可以对嫁接愈合过程与各种因子的关系有一个更深入而全面的认识,为此方面的研究提供一些生理生化方面的理论依据,以便对其进行系统而深入的研究。
- 推荐网络例句
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She gently rebuff ed him, but agreed that they could be friends
她婉言拒绝了,但同意作为朋友相处。
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If in the penal farm, you were sure to be criticized.
要是在劳改农场,你等着挨绳子吧!
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Several theories about reigniting and extinguishing of the arc have been refered.
本文综合考虑了几种电弧重燃和熄灭理论。