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Firstly, the basic concept of software/hardware co-design and the present research situation worldwide is introduced, the techniques are also discussed separately in the thesis, which is in the system description stage, system architecture design stage, hardware/software design and implementation stage. Secondly, combined with three representative methods of hardware/software co-design systems: POLIS、VULCAN and CORSAIR, the main steps of co-design are studied and analyzed including system description, hardware/software partitioning and hardware/software implementation-synthesis, and some new ideas are given here. Thirdly, UML and modeling technology of embedded systems using UML are described clearly, a handheld terminals is a good example for this, furthermore, the algorithm of how to convert the UML diagram into SystemC codes is mainly concerned on in this thesis. Fourthly, the basic concept of SystemC is described, and the SystemC Modeling platform and simulation mechanism are analyzed, software/hardware co-design methods using SystemC are discussed. Finally, by applying co-design ideas using UML and SystemC, software/hardware co-design system using UML and SystemC is preparatorily implemented, which is to establish a development environment for designing embedded system.
本文首先介绍了软硬件协同设计的基本概念和国内外研究现状,并分别论述了系统描述阶段的技术、系统结构设计阶段的技术、软硬件设计与实现阶段的技术;接着结合POLIS、VULCAN和CORSAIR 三种有代表性的软硬件协同设计方法,对系统描述、软硬件划分、软硬件实现综合等几个主要设计步骤进行了研究与分析,并提出了新的方法和思路;然后详细介绍了UML及基于UML的嵌入式系统建模技术,并以嵌入式手持终端系统来举例说明,重点研究将UML的视图转换成SystemC代码的算法;其次介绍了SystemC的基本概念,分析了SystemC 的建模平台和仿真机制,并对基于SystemC 的软硬件协同设计方法进行探讨;最后应用基于UML和SystemC的软硬件协同设计的设计思路,初步实现基于UML和SystemC的软硬件协同设计的设计系统,目的是建立一个用于嵌入式系统设计的开发环境。
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Considering the switch of the DC control mode, a new load margin solution is presental that is to solve the maximum load incremental under each DC control mode separately and add them together. The method is characterized by its convenience of considering varialle constraints of DC system and adjustment of DC operation mode.
交直流系统直流控制方式会发生调整,提出分段求解负荷裕度的方法,即分别用内点法求解系统不同直流控制方式的最大负荷增量再求和,该方法能方便考虑直流变量约束及运行方式的调整。
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The method comprises A: separately configuring different common channel priority indication for different service data stream transmitted on same dedicated service channel; B: according to sequence from high to low of public channel priority indication for different data stream, priorly scheduling public channel high priority indication service data stream for transmitting at every moment; C: if service data stream of low common channel priority indication being not scheduled in a preset reference time period, then upgrading the service data stream common channel priority indication, then return to B.
分别为在同一专用业务信道上传输的不同业务数据流配置不同的公共信道优先级指示;B。在每一时刻,所述专用业务信道按照不同业务数据流的公共信道优先级指示由高至低的顺序,优先调度公共信道优先级指示高的业务数据流进行传输;并C。预设一参考时间段,若公共信道优先级指示低的业务数据流在所述参考时间段内总没有得到调度,则将该业务数据流的公共信道优先级指示升高,然后返回B。
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The results show that both conformations of prolyl peptide bond are not easy to transit from each other supporting the opinion that both of the BPP's bio-characters are from its conformations separately. And the function of BPP may not lie on a conformation. The other peptide bond conformations also have influence.
结果表明,脯氨酸肽键构象不易发生互变,无论哪种构象均不存在向另一种构象转变的趋势,从侧面支持了BPP具有的两种稳定的生物学作用是来自于肽键的不同构象的观点,而且BPP的生物学作用可能也不是取决于某一个肽键构象,其它脯氨酸肽键构象对其活性也存在影响。
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To optimize the in vitro culture system of mouse pronuclear zygote and to investigate the effect of FBS, PVA, hLIF on mouse zygote development in vitro, we did four experiments separately.
筛选最佳的小鼠胚胎体外发育培养体系,并进一步探讨不同浓度的FBS、PVA、hLIF对其体外发育的影响,从而为小鼠卵母细胞核移植后重构胚的体外培养提供支持。
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According to the purpose of the research in this paper, 3D elastic theory was chosen. The propagational characteristics of Lamb waves in isotropic and antisotropic materials were modeled and the dispersive curves of Lamb waves in an aluminum plate and a carbon fiber composite lamina were calculated separately through the given parameters of certain plate.
首先,比较了现有对Lamb波传播特性建模的方法,根据本文的研究目的选择三维弹性理论作为研究方法,对各向同性材料和各向异性材料中的Lamb传播特性进行建模。
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MethodsThe D. bacteria - E. coli shuttle expression vector pZT17 was constructed based on plasmids of pUE30, pGBM5 and pKatCAT. Then pZT17 with lux+ from Photinus pyralis was used to transform into D. grandis and E.coli. The recombinant strains were induced separately.
以质粒pUE30、pGBM5及pKatCAT为基础,构建抗辐射菌属一大肠杆菌间的穿梭载体,将groEL启动子和荧光素酶基因lux+插入到构建的穿梭载体中得到穿梭表达载体,并将该载体转化大肠杆菌诱导荧光素酶基因的表达。
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All of these results make it possible to optimize waste-disposal techeniques.According to production features of XMCL, hangingwall muddy waste is suggested to dispose separately from buttom wall quartzy sandstone.
本研究结合新桥矿业有限公司生产的特点,对上盘含泥量较高的剥离物料与下盘的五通组石英砂岩实行分排,改善了堤坝前排土物料的强度,提高了排土场的总体稳定性。
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METHODS Twenty-four patients with maxillofacial racemose hemangioma underwent selective angiography and complete filling embolization separately.
回顾性分析24例颌面部蔓状血管瘤的选择性动脉造影与分次完全填充栓塞的治疗资料。
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Rachilla disarticulating and florets separately deciduous.
脱节的Rachilla 和分别落叶的小花。
- 推荐网络例句
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The split between the two groups can hardly be papered over.
这两个团体间的分歧难以掩饰。
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This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.
这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。
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The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.
聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力