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The study has focused on: 1 The research background and the current state of the power measurement were analyzed systematically, and then wavelet-based power measurement algorithm was certified feasible for astable signals; 2 We developed a new method of RMS and power measurement based on Dmeyer wavelet. After that three other wavelet measurement approaches were compared with Dmeyer wavelet-based measurement approach. Then the impact on measurement errors of amplitude frequency property and energy leakage of wavelet filter banks were deeply researched, and some measures were proposed to reduce it; 3 We developed a new strategy of power measurement algorithm based on lifting wavelet, which had calculation advantage compared with the first wavelet, so that it was more suitable for the realization of hardware; 4 The running system of wavelet-based power measurement algorithm based on DSP was proposed, and then it was realized on ICETEK-VC5416-A EVM board; 5 Existing problems and the further research direction of wavelet-based power sub-band measurement algorithm was discussed.
本文对基于小波变换的功率测量算法展开深入的分析研究,主要内容有:1)系统地分析了功率分解测量的研究背景、国内外的研究现状,并从能量守恒的角度验证了小波功率分频带测量算法在非平稳信号条件下的可行性;2)首次提出了Dmeyer小波变换有效值与功率的测量方法,进而通过对该方法与3种已经提出的小波测量方法的对比分析,深入研究了小波滤波器组的幅频特性和能量泄漏特性对测量误差的影响,并针对电网谐波的特点提出了减小影响的相关措施;3)首次提出了二代小波功率测量算法,对比一代小波功率分频带测量算法,它大大减少了算法实现的运算量及内存的需求量,从而更适合于硬件的实时实现;4)提出了小波功率分频带测量算法的DSP实现方案,并在ICETEK-VC5416-A EVM板上进行了实现;5)探讨了小波功率分频带测量算法目前仍存在的问题,并提出了进一步的研究方向。
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In addition, the company has acquired further 14 such centers across Europe through its October 2004 acquisition of Synstar PLC -- a Bracknell, England, company specializing in IT support services, for $293 million -- and its acquisition of the Irish data recovery activities of Schlumberger Business Continuity Services Ltd in March of this year, it said. In addition, the company has acquired further 14 such centers across Europe through its October 2004 acquisition of Synstar PLC -- a Bracknell, England, company specializing in IT support services, for $293 million -- and its acquisition of the Irish data recovery activities of Schlumberger Business Continuity Services Ltd in March of this year, it said.
此外,该公司已经收购了另外14个这样的中心,整个欧洲通过其2004年10月收购synstar可编程控制器-布莱克内尔,英格兰,公司专门从事资讯科技支援服务,为2 93000000美元-以及其收购的爱尔兰数据恢复活动Schlumberger的业务连续性服务有限公司在今年3月,它说,此外,该公司已经收购了另外14个这样的中心,整个欧洲通过其2004年10月收购synstar可编程控制器-布莱克内尔,英格兰,公司专门从事信息技术支持服务,为293000000美元-以及其收购的爱尔兰数据恢复活动S chlumberger的业务连续性服务有限公司在今年3月,它说。
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The Vatican has already taken, following reordination, several dozen rebel Anglican priests, some of them married.
梵蒂冈已经授予,通过再次授任,几十个反叛的圣公会牧师圣职,其中一些人已经结过婚。
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The paper researches the kernel of Real-Time Operating System μC/OS-Ⅱ and the method of porting it to PIC18F8720 which is the PIC18 series MCU of Microchip Corporation. It solves the four key functions and presents the most important and difficult problems in the course of porting μC/OS-Ⅱ. The porting method is catholicized and can be used to other series MCU. A porting has been implemented on board, and the system runs steadily and reliably under multitask environment. By testing, the real time parameters have reached the demand of designing. So the paper has common guidance in porting operating system to other series MCU.
针对剪板机位置控制系统实时性的要求,采用基于嵌入式实时系统技术搭建系统软件框架,替换原来的前后台系统软件框架;研究了μC/OS-Ⅱ实时操作系统内核,以及用于Microchip公司PIC18F8720单片机的移植方法,详细分析了如何正确改写4个关键函数和在移植过程中需要注意的问题;该移植已经通过软件测试并且用于一个剪板机位置控制系统中,实际运行稳定可靠,证明移植是成功的;其在PIC18XX系列单片机上移植μC/OS-Ⅱ的函数改写方法具有一定普遍性,可以借鉴用于其它系列单片机的μC/OS-Ⅱ移植。
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Of the 245 people in the United States whom DNA testing has exonerated, none has spent more time behind bars than Bain, according to the Innocence Project, a national organization dedicated to exonerating wrongfully convicted people through such testing.
在美国通过DNA测试比对已经有245人被证明无罪,但还没有人在狱时间超过贝恩。通过清白计划,国际机构通过使用DNA测试证明被误判有罪的人士清白。
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Muckraking was a massive social movement occurring in the beginning of the 20th century when America had just realized industrialization. Between 1902 and about 1915, the Muckrakers, writers/journalists who devoted themselves to social reform and social justice, using massified media—magazine,intensively and critically exposed various kinds of injustice and corruption resulting from the social transition. And by way of cultivating public opinion, awaking common people and supporting legislation, they restrained social Darwinism, helped avoid possible social disorders and strengthen the results of productive development and established institutions together with the progressive forces in politics, business and the intelligentsia.
作者:展江摘要:黑幕揭发运动是20世纪初美国从农业社会到工业社会的转型刚刚完成之际发生的一场大规模社会运动,其中一批有志于社会改革和社会正义的作家/新闻工作者即&黑幕揭发者&,利用当时已经大众化的传媒——期刊,以深度的解析和犀利的言论抨击了伴随社会转型而来的种种不公和腐败现象,与政界、商界和知识界的其他进步力量一起,通过激活公众舆论、促使民众觉醒和支持立法等方式,抑制了社会达尔文主义思潮,避免了可能出现的社会失序,进而巩固了生产力发展的成果和既有的社会体制。
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I have found my Liberation and my Happiness through sorrow, through suffering and experience, through setting aside all things, through renouncing the gods I have worshipped; and because of that finding I would give.
我已经找到了我的解脱和我的幸福通过悲哀,通过痛苦和经验,通过把所有的事情抛在一边,通过弃绝我曾经崇拜的神祉,并且因为那个,我会给你们这发现。
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It injects the medium's content with hyperlinks, blinking ads, and other digital gewgaws, and it surrounds the content with the content of all the other media it has absorbed.
它通过超链接、闪动广告和其他的数字化的华而不实的东西注入媒体的内容,并且它用它已经并入的其他所有媒体的内容包围着它的内容。
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RT-PCR was a sensitive and stable method. It would be useful for large-scale diagnosis.A length cDNA of CEVd had been cloned into plasmid vector. Biotinylated probes were prepared from these plasmid DNAs. CEVd were examined from the positive and netative materials by Dot-blotting hybridization and imprint-hybridization. The result was exposed to x-ray film. Singles were detected for positive materials spots probed with probe, indicating that under the reaction conditions the probe hybridized with the target viroid specifically.
核酸杂交法检测:利用已经克隆的美国柑桔裂皮类病毒cDNA序列,制备生物素标记的核苷酸探针,采用斑点杂交的方法和组织印迹的方法分别对阳性材料进行杂交检测,通过胶片曝光显示杂交信号,发现在两种方法的检测结果中阳性材料都有强的反应,而阴性材料无反应或较弱,该方法安全可靠、快速准确,适合大量样品的检测。
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This is just one month before the rumors of a figment of my imagination of message has been confirmed, Lin qingxia really has returned to the universal network TV, but Lin qingxia back and other star still some difference, he didn't come back, but through by singing in writing the book, Lin qingxia book tells the filming in the past many stories, and when you believe to be the story of enough interest.
这个在1个月前还只是捕风捉影的传闻的消息已经被证实了,林青霞确实已经回到了万能网络电视,但是林青霞回来的方式和其他的明星还是有些区别的,他并不是通过唱歌回来,而是通过写书,林青霞在书中讲述了过去许多在拍片子的时候鲜为人知的故事,而这些故事相信会引起您的足够兴趣。
- 推荐网络例句
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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。
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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。
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There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.
双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。