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In this paper, we have made a systemic theoretic research on modelling and reshaping several types of spline curves/surfaces in CAGD. And some creative productions are given as follows. At first, the uniform C-B-spline basis is proved to be a normalized totally positive basis, and can be extended to a normalized B-basis. C-B-spline and C-Bézier basis, similar to B-spline basis and Bézier basis in algebraic space, are two bases in algebraic trigonometric space.
本文围绕着CAGD中常用的几种曲线曲面造型和形状调整进行了深入的研究,主要获得了以下一些成果:首先,证明了代数三角空间中的n次均匀C-B-spline基是一组标准全正基,并进一步扩充为一组标准B基。C-B-spline基与C-Bézier基是多项式与三角混合空间中的两组基,是适应工程实践中设计特殊曲线曲面的需要而产生的,类似于多项式空间中的B-spline基与Bézier基,是CAGD中重要的造型工具。
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Another work of this paper is to study the continuous design of Test Automation. Common aspects of continuous design include the performance and maintainability of test automation system itself, the independence of test execution, and the analyzability of test result. This paper gives the concrete resolution of above four aspects, and also proposes other aspects need to be considered in continuous design, such as extendibility in future and capability to multi-product and multi-edition.
论文的另外一个工作是对自动化测试系统的可延续性设计进行了研究,从常见的自动化测试体系本身的性能、可维护性,测试执行的独立性以及测试结果的可分析性四个方面对可延续性设计提出了具体的实施方案,另外还提出了自动化测试在未来的可扩充性、对多产品多版本的适应性等可延续性设计需要考虑的问题。
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Detailed contents are given as follows:(1)In views of the x-ray laser target chamber on the SG-II high-power laser facility and the experimentally physical demands, the key influencing factors, such as the elliptical eccentricity and the spectral detection angle, on the angular dispersion, the spectral resolution,and the photometric parameter were studied by the elliptical self-focusing geometric principle. In order to increase the spectral and spatial resolution, using ray tracing code and optical path function, optimization calculation was carried out for an elliptical crystal spectrometer.
进一步以此为核心开发出了一种新型的X射线测量与诊断系统,取得了一些新的科研成果,可为王王淦淦昌昌院士、王大珩院士二老倡导研制成的用于国防科研、激光惯性约束聚变、强激光与物质相互作用、X射线激光等物理研究的大型钕玻璃高功率"神光II"激光装置上的物理实验提供更有效的诊断X射线谱手段,扩充了其应用范围,也对激光等离子体辐射keV以上能区段的X光发射和吸收的原子物理过程与机制、占据动力学、谱形态结构等方面做了深入一步的理论和实验研究。
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However, the conventional CMAC has an enormous memory requirement so that it cannot be applied to solve higher dimensional problems.
因此,本研究提出一个具有自组织能力之阶层式小脑模型类神经网路,它可以依据分析学习样本的分布,自动建立网路的记忆体配置,并藉由阶层式的学习架构,来有效降低记忆体的需求,使其具有解决高维度问题的能力,而此类神经网路架构亦具有可扩充性,可以在不影响其他网路的学习架构下,任意的增减输出节点的个数,此外,我们也提出了一个渐进式学习的演算法来训练此一类神经网路。
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Chaper 3 is general description of ADA encryption. Chapter 4 deals with the transform domain encryption. Includes the element of perfect and quasi-perfect transform domain encryption, and presents two type new schemes. Chapter 5 deals with asynchronous ADA encryption. Extends the general theory and model of asynchronous ADA scrambling, and introduces two type phase-distortion-free a synchronous ADA schemes. Chapter 6 is about new direction of ADA encryption. Includes TASI scrambling, transform domain dummy insertion scrambling, noise coving scrambling and other multi-dimension ADA scrambling, and proposes an adaptive dummy spectrum insertion asynchronous scrambling and a new adaptive noise-coving DFT scrambling algorithm. Chapter 7 is on permutation key. presents part results on permutation features, selecting criterion and constructing method. Chapter 8 introduces the hard and software design of a common ADA encryption/decryption system, and presents the experimental results on several proposed ADA encryption schemes.
第一章为绪论;第二章为语声信号、及其处理基础;第三章为模数模加密的一般描述;第四章为变换域加密研究,包括变换域加密机理,变换域完善与准完善保密研究,提出两种新的变换域加密方案;第五章为异步模数模加密研究,扩充了异步模数模加密的一般理论,介绍了两种新的无相位失真异步加密方案的原理与实现方法;第六章对模数模加密新方向:TASI应用途径、变换域伪谱插空置乱、噪声掩盖、多维置乱加密的原理和方法进行介绍,提出了自适应伪频插空异步模数模置乱算法与自适应DFT系数噪声掩盖置乱新算法;第七章为置换密钥性质、筛选准则以及构造方法研究的部分结果;第八章介绍了通用模数模加/解密实验系统的硬件、软件研制概况,并给出了几种加密方法的实验结果。
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The purpose of the New Scheme is for the Company to attract, retain and motivate participants to strive for the future development and expansion of the Group and to provide the Company with a flexible means of giving incentive to, rewarding, remunerating, compensating and/or providing benefits to the eligible participants and for such other purposes as may be approved from time to time.
新计划旨在吸引、挽留及激励合资格的参与者,致力推动本集团日后的发展及扩充,并为本公司提供灵活的方法,以鼓励、奖赏、酬谢、补偿合资格的参与者及╱或为合资格的参与者提供利益,以及为不时批准的其他目的而设。
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It also can use the technology of code share and unitizing communication interface with other systems to strengthen modularity and reliability of system, share the informational resources, avoid repeated research and development, increase software productivity, deployed quickly and expediently at low cost. This study provides a foundation for establishing general and digital crop management decision support system.
这种通用算法使不同的作物采用了相似的模拟方法和统一的参数设置,便于模型的不断完善与扩充,并能提高代码的复用率,加强系统的模块化和可靠性,统一不同作物模型接口的规范,增加软件生产率,降低开发代价。
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The cause of uveitis is complicated, and is considered to be caused mainly by heat, toxicity, dampness and stasis etc to attack iris and pipul in TCM.
历代对五轮学说的研究大多停留在文献整理和临床验证基础上,随着现代科学的发展,五轮学说的内容有了进一步的扩充,但从实验研究的角度来探讨它的实质还远远落在时代的后面,为了使五轮理论更客观、更科学、更有效地指导临床,我们选择葡萄膜炎进行分析。
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Meanwhile, he says, a planned costly extension of the bullet train, on which the prefecture pins its hopes, is just as likely to make it easier for businesses and young people to flee to the thriving big city of Fukuoka as it is to attract them.
同时,他说,计划中的对高速火车的昂贵扩充背负着该县的希望,但也可能使得经济活动和年轻人更容易的逃到吸引他们的福岡县繁荣的大城市里。
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Ted Park Ji-won and Jehol Diary as research subject, the main purpose is not only re-evaluating its literature value, but also exploring deeply and systematically its inner cultural values and its significances on that time, and even enriching its enlightenment values and significances on the turn of the history.
在这种情况下,笔者仍选择朴趾源的《热河日记》作为研究的对象,与其说是在重新规定它的文学价值,倒不如说是为了对作品内在的文化价值和时代意义,做一些深层次的探究和系统的阐述,进而扩充《热河日记》在历史转折时期所具有的近代启蒙价值和意义。
- 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