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为了解决传统地图等高线、天气图等值线手工分析的缺点,而以计算机自动分析作替代。通过考察插值、拟合几种数学方法,提出如何应用三次B样条函数,处理格点数据,寻找等值控制点,进行曲线拟合,这一方法具有客观化程度高、分析速度快且线条光滑等特点。 相似文献
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多处间断曲线的自动插值 总被引：1，自引：0，他引：1
陈文争 《咸阳师范专科学校学报》2000,15(3):44-47,63
给出离散型变量的函数在多个间断处自动插值的算法,C语言程序和误差分析,该算法在计算机数据处理中具有颇佳的应用效果。 相似文献
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自由沉淀实验数据处理中需要进行积分运算,絮凝沉淀实验数据处理中需要绘制悬浮颗粒去除百分数等值线。传统的梯形积分法和手工绘制等值线法存在主观性强、工作量大等缺陷。文中结合2个实例介绍了利用Origin软件进行自由沉淀和絮凝沉淀实验数据处理的方法,简单易行,绘图规范,计算精确。 相似文献
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本文给出了绘制可旋转的三维图表的基础理论和计算方法。具体阐述了数据结构的选取、参照坐标系的确立,图表数据的处理,对及图表绘制的主要过程。 相似文献
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《实验室研究与探索》2017,(8):44-47
击实试验是衡量实际施工中土体被压实或夯实到最优程度的室内指导性试验,对土木工程的抗压、抗剪、抗渗等性能有重要意义。在探讨击实试验中的密度、含水量、干密度在数学及土力学意义的空间图形关系基础上,应用数值分析原理并采用分段三次多项式插值方法,自编Matlab程序,有效、快捷地确定击实曲线峰值点以及绘制成果曲线,克服了应用"图解法"的不准确性和不方便性。该方法可应用于不同地区的黄土击实试验中,效果良好。 相似文献
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ArcEngine的IConstructPoint2接口提供了点的绘制方法,这些方法直接或间接提供了前方交会、后方交会等交会测量的方法,将这些方法进行封装,可以进行交会测量程序设计。文章借助于IConstructPoint2接口提供的点的绘制方法,以前方交会和后方交会为例进行了交会测量程序设计与实现。实践证明:基于ArcEngine的交会测量程序具有实现简单,可视化强的优点。 相似文献
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分形方法可以模拟传统欧氏几何方法所不能描述的各种自然景物。运用分形几何学原理和方法,利用Java可以绘制出具有真实感的自然景物。在此给出了分形插值算法绘制云彩的实现过程。结果表明,此方法对自然景物的模拟非常逼真,可以在虚拟场景的自然景物生成中得到应用。 相似文献
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于绍慧 《合肥师范学院学报》2014,32(6):1-4
三维荧光光谱插值在数据预处理和数据解析中具有非常重要的地位.针对三维荧光光谱荧光峰变化缓慢的特点,从统计学的角度采用Kriging方法对其进行插值.鉴于变差模型和已知插值点的分布情况在Kriging方法中的重要性,分析比较了四种变差模型的插值结果并探讨了已知插值点个数引起高斯变差模型震荡的原因,最后给出了适合三维荧光光谱插值的Kriging方法. 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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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
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Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject. 相似文献
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Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities. 相似文献
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RUZBEHANI Mohsen 《重庆大学学报(英文版)》2004,3(1):20-25
1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec… 相似文献
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Rachel Zupek 《海外英语》2007,(11):40-41
我们绝大部分人都同意一件事情——我们喜欢金钱。但是你对金钱的喜欢之情足够到让你创立一份事业么?.财富通常被人忽视,主要在于人们不能真正了 相似文献