共查询到20条相似文献，搜索用时 62 毫秒
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本文以傅里叶级数中周期信号的展开与合成为例,利用LabVIEW软件对其分解与合成过程进行仿真研究,可以直观的解释周期信号的分解与合成原理。同时对方波信号的合成过程中出现的吉布斯现象进行仿真研究,将书本上枯燥的讲解直观生动地演示出来,使学生更容易理解其基本原理。 相似文献
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文章针对信号与系统课程中的周期信号进行频域分解与合成分析时公式推导多、求解复杂、吉布斯现象不直观等问题,提出借助MATLAB仿真处理,得到直观的合成图形,加深学生对傅立叶级数和吉布斯现象的理解,激发学生的学习兴趣,取得良好的教学效果。 相似文献
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龙芬 《武汉职业技术学院学报》2013,12(1):90-92
提出了一个互相关的传感器系统的信号处理仿真。它是在LabVIEW虚拟仪器的基础上建立的,主要适用于主动声纳和雷迭系统相关接收器信号处理仿真,也可用于信号分析和教学中。并给出了实验过程及仿真结果。 相似文献
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《华夏少年(简快作文 )》2014,(7)
运用LabVIEW虚拟仪器技术图形化集成设计平台,完成信号处理系统设计,系统包括波形发生、采样滤波等模块单元,可以对被测信号完成时域、频域及时频域分析,可以调整数据参数,动态直观显示处理后信号变化情况,应用到高职院校《信号与系统》课程教学中,事实证明收到了良好的教学效果。 相似文献
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本文主要将电子技术基础、电路与系统理论、信号分析和信号处理结合在一起.从频域的角度对共射极电路进行了分析,在PSPICE里对共射极电路进行了时域、s域分析和仿真,指出了理论分析的近似性及实验仿真的可靠性. 相似文献
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罗艳萍 《读与写:教育教学刊》2008,5(6)
The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity. 相似文献
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Richard Denner 《海外英语》2007,(4):14-15
Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose. 相似文献
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Given a graph G,a subgraph C is called a clique of G if C is a complete subgraph of G maximal under inclusion and |C|≥2. A clique-transversal set S of G is a set of vertices of G such that S meets all cliques of G. The clique-transversal number, denoted as TC (G), is the minimum cardinality of a clique-transversal set in G. The clique-graph of G, denoted as K (G), is the graph obtained by taking the cliques of G as vertices, and two vertices are adjacent if and only if the corresponding cliques in G have nonempty intersection. Let F be a class of graphs G such that F={G|K(G) is a tree}. In this paper the graphs in F having independent clique-transversal sets are shown and thus TC (G)/|G|≤1/2 for all G ∈ F. 相似文献
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《海外英语》2007,(5):10-11
Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help? 相似文献
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陈美曦 《山东教育学院学报》2008,23(2):103-107
Different nations have different social cultures, and the social culture of every nation is developing with the development of the nation, language is greatly influenced by social culture, which enables language to possess national and historical characteristics. Word is the smallest, independent, meaningful linguistic unit of language. It can well reflect the national and historical characteristics. From synchronic aspect, the social and cultural influence on word meaning is mainly embodied in conceptual and associative meanings of word. The incorrespondence of word meaning is a phenomenon that exists in both conceptual and associative meanings of word among different languages. From diachronic aspect, the development of social culture causes some changes of word meaning to some extent. Therefore, social culture plays a key role in vocabulary learning and mastery of a language. 相似文献
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邱崇丙 《唐山师范学院学报》2014,(1):21-23
汉字的六书,《说文》对“转注”一类,语焉不详。后世学者提及转注,也仅限于许慎所举出的例字。《汉字例说》一文,作者从转注的角度综合考虑,对部分现代常用字作了分析,跟传统的解释有所不同。希望能抛砖引玉,互相切磋,以推进学术研究。 相似文献
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《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love. 相似文献