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In this paper we study the method of interpolation by radial basis functions in H~k(k ≥ 1) and give some error estimates. By means of such interpolation with a special kind of radial basis function, we construct a basis in H~k(k ≥ 1). Combined with the Galerkin method, this theory can be applied to solve boundary value problems for elliptic partial differential equations (such as the third boundary value problem for Poisson equation and the corresponding problem for the biharmonic equation), and some numerical experiments are also given.

本文从求解偏微分方程的角度出发,在被逼近函数u属于一般的Sobolev空间H~k(k≥1)的情形,引入了一种径向基函数插值方法,并建立了相应的误差估计;再利用这种插值性质,从一类特殊径向基函数出发构造Sobolev空间的一组基,针对Poisson方程第三类边值问题和重调和方程类似边值问题,为用无网格算法求解偏微分方程边值问题建立了相应的理论,并通过算例来验证了这一算法。

In this paper, we propose a new visual cryptographic method for gray-level and chromatic images without pixel expansion. We simultaneously encrypt m successive pixels (called an "encryption sequence") each time in accordance with two basis matrices. In every m encryption sequences with b blacks, we make sure that b encryption sequences are encoded by black basis matrix, and the other ones are encoded by white basis matrix.

本研究提出一种不需要像素扩展的灰阶和彩色视觉密码的技术;我们的方法利用多点同时加密的概念,每次取连续的 m 个点做为加密序列进行加密,我们的方法可以确保在 m 个具有 b 个黑点的加密序列中,一定会有 b 个加密序列是使用黑点基础矩阵加密,另外的个则使用白点基础矩阵加密,因此在叠合影像上黑与白的变化很规律。

The basis function of the coinjection of Nitrogen and steam is increasing the displacement volume and supply the displacement energy on the basis of Nitrogen, the result of the numerical simulation showed that, after the coinjection of Nitrogen and steam (the optional aqueous Nitrogen ratio was 1: 20~1: 50), the theamal readius increased from 30m to 55m more or less, the recovery ratio increased by 5~10%. The production effect of the high cycles steam stimulation will be improved and the pattern infill will be avoided and the economic results will be improved. 4. The poor result of steamflood is another problem. On the basis of the analysis of the foamer mechanism in the propayation, movement and stabilization, this paper showed that the main meachanism of the increasing recovery of the Nitrogen foam and steamflood was the increasing displacement factor and oil displacement efficiency.

三针对蒸汽吞吐加热半径有限(一般30m左右)而蒸汽吞吐轮次已高达5轮以上的具体情况,将氮气与蒸汽混合(套管环空中注氮气,油管中注蒸汽)进行吞吐可增加加热半径1~2倍以上;在对原油流变性研究基础上,对氮气蒸汽原油体系状态进行了分析,指出了氮气在油藏中基本上是以气相方式存在;热氮混合吞吐的基本作用为扩大波及体积和提供驱油能量;在此基础上所进行的热氮混注数值模拟研究表明:蒸汽中加入氮气后(最佳汽氮比为1:20~1:50),加热半径从30m增至55m左右,采收率可提高5~10%以上,大大改善了高轮次蒸汽吞吐的生产效果,可避免大规模井网加密,提高了经济效益。

At first, this paper conducts in depth research on classification method, compaction propeties, granulometric composition and crushing of stone. On the basis of clarifying engineering characteristics of material of rock-filling embankment, requirements of ground treatment have been put forword in this paper. Then combined with the site test and engineering practice in SHUINAN Road and LANLIN Road, through the synthetical analysis of factors of influencing densification effect for the maximum grain size of filling material, lay-down thickness, granulometric composition, densification machinery and densification frequency etc., this paper studies key technical problems about construction technologies for spreading and leveling of filling material, choosing densification machinery, densification technology and slope construction systematically. Finally, construction technologies of filling lime-stone and sand-stone roadbed have been proposed in this paper ,which are significant for quality guarantee of highway engineering.

本文首先从石料的分类方法、压实特性、粒径组成以及破碎性等方面进行研究,在明确填石路基填料的工程特性基础上,进而提出了填石路基的地基处理要求,然后结合广西水南路和甘肃兰临路填石路基试验路段上的现场研究,通过对填石路基填料最大粒径、松铺厚度、粒径组成,压实机械以及碾压遍数等影响压实效果因素的综合分析,系统研究了填石路基填料的摊铺与整平技术、压实机械选型技术、压实工艺以及边坡施工技术等施工工艺中的关键问题,最后提出石灰岩类和砂岩类填石路基的施工工艺要求。

In the paper, on the basis of aggregation of previous studies, the development of optical technology and development trends at home and abroad are introduced, the principle of Fresnel lens is summarized. In accordance with its principle, circle equidistant steps Fresnel lens design is described. And on this basis, based on Fresnel design, also based on a continuous upward spiral of the plane curve concept, incidence surface and the backlight is set up to greet Archimedes - Fresnel lens design formula and the Second parabolic type Fresnel lens design formula, and on this basis, the advantages and disadvantages of the three designs is discussed.

本文在充分了解非球面光学技术在国内外的发展状况和趋势的基础上,同时从菲涅尔透镜的光学原理出发,并根据它的工作原理推导了圆环等距菲涅尔透镜的设计步骤,并在此基础上依据菲涅尔的设计思想,同时依据平面曲线的连续又呈螺旋的构思,推导出了迎光面和背光面阿基米德型菲涅尔透镜的设计公式和二次抛物面型菲涅尔透镜的设计公式,并在此基础上讨论了这三种设计各自的优缺点。

First, this paper denotes a method on the basis of information entropy to build up Markov net, and presents an effective constitution arithmetic of the Markov net on the basis of information independent testing, which is on the basis of dependence analogy and only needs CI testing.

介绍了概率网的基本概念以及目前国内外的应用研究现状,探讨一个基于信息熵方法构造的马尔科夫网络,给出了有效的基于信息独立测试的马尔科夫网络的构造算法。

Basically, the contents of this paper are organized as follows: Firstly, it is interpreted that the technical identifications of higher education and economic growth and the relative theories such as human capital and new economic growth, which can make theatric basis for the further empirical study. After that, the paper is to construct a couple of index systems to depict higher education development and economic growth respectively. At the end of this paper, it will adopt the dynamic econometric models such as Granger causality test, co-integration test, VAR and VECM model, to evaluate the co-relations between the two systems. According to the empirical study, the paper comes to the conclusions as follows:(1) There really exists one-way causality between the economic growth and the higher education, i.e.

本文内容基本安排如下:首先本文阐述经济增长和高等教育发展的内涵及其相关的理论,为本文的实证研究奠定理论基础;然后构建高等教育发展和经济增长两个指标体系,以描述高等教育发展和经济增长两个多因素相互作用的复杂过程;最后本文以1978-2003年的时间序列数据为数据资源,运用Granger 因果检验、协整检验、VAR 模型以其向量误差纠正模型VECM 等动态经济计量模型进行实证分析。

Structure is willing to work rationale : the paper to paper on stage by infrared absorption into the lamp drying wind hield, After Road from the conveyor belt and crushed round brush and brush so that the paper dust from the suction fan sucked out; B-type structures of the A-type unction on the basis of additional wetting a paper on the roll so that the small amount of residue below dust by wetting roll away, except on the following powder to the best results.

型结构工作愿理:纸张在给纸台上通过红外灯管烘干送入吸风罩内,由输送带经过道轮刷辗和排刷使纸张上的粉尘由吸风机吸走;B 型结构是在 A 型功能的基础上增设一道润湿辊使纸张上下面残留的少量粉尘由润湿辊带走,使上下面除粉达最佳效果。

On the basis of summarizing and commenting upon the major studies of semantic orientation of resultative construction in modern Chinese, the paper claims it is insufficient to study semantic orientation of resultative construction only from the literal or formal logic point of view, but rather, researchers should take into account some subjective factors on the part of language users; then, the paper introduces Talmy's cognitive semantic approach to resultative construction; based on his theoretical framework, the present paper further investigates the internal causes of the diversity of semantic orientation of satellites in Chinese,supported with the data analysis; and finally, this paper concludes that it is the semantic and syntactic properties of the verb root that make these diversified semantic orientation possible, and their actual representation is finalized by the language user via different satellites.

本文在对以往动补结构语义指向的主要研究成果进行总结评价的基础上,提出对语义指向的研究不能停留在字面和形式逻辑的层面上,而应结合语言使用者的主观因素或主观经验,也即是认知语义学的观点;其次,系统地介绍了Talmy的认知语义学观点中关于汉语动补结构的重新描述和分析,并在此基础上,着重分析了汉语动补结构多样化的语义指向的内在原因,即,汉语动作动词特殊的词汇化模式(仅包括动作和使动成分在内)中不包含确定动作执行结果的成分,因而须要借助于其卫星成分来表明动作的结果,这个结果可能是规约性的结果,也可能是偶然性的结果,由此呈现出卫星成分的多义性的特点,也就是传统上说的动补结构的语义指向。

The paper investigates both block-type pilot linear minimum mean square error algorithm and IEEE802.16 OFDM channel estimation analysis. Simulation results confirm the block-type pilot structure is more suitable for IEEE802.16 system. An optimal pilot setting algorithm, based on space frequency domain, is explored and the pilot chart is presented. The proposed algorithm finds its application in MIMO-OFDM. Simulation results show the algorithm presents a good approximation to the perfect channel state information curve, with about 2dB difference in SNR. The simulation results also demonstrate the algorithm achieves fairly high stability in the environment of fast fading, performance of the proposed algorithm is better that of pilot training channel estimation.3. Taking into account the characteristics of IEEE802.16 OFDM system, OFDM system simulation platform is constructed in Matlab, exploiting simulink as a tool. OFDM modulation and demodulation simulation system are configured on LabVIEW platform. All the system signal processing is simulated, including defining system parameters, designing modulation model, and verifying all the proposed algorithms under different environments, such as white Gaussian noise, multi-path fading, with or without guard interval etc. Bit error performance is evaluated. The research provides valid theoretical basis for practical OFDM system performance evaluation.4. Taking advantage of software radio, the paper designs a hardware platform with both 256-IFFT/FFT and 512-IFFT/FFT OFDM schemes co-existing in one platform. You can predetermine one from the two schemes to carry out almost the same model function with different system performance and parameter setting.5. Referring to IEEE802.16 standard, the paper proposes a design method for generating signals and frames suitable for laboratory investigations implemented in laboratory environment.6. Based on 6701evm digital evaluation card, combined with analogy front-end, the paper designs a DSP software model to deal with baseband signal processing. An overall OFDM scheme, with modulation and demodulation function, is accomplished.

讨论分析了MIMO-OFDM中一种基于空频域的最优导频设置算法,给出了导频图案,通过仿真实验表明,该算法与理想的信道状态信息曲线非常接近,信噪比差距约在2dB左右,并且在快衰落条件下具有较好的稳定性,其性能要优于基于前导训练的信道估计方法。3、根据IEEE802.16OFDM系统特点,论文分别在Matlab中应用Simulink工具构建OFDM系统仿真平台、在LabVIEW平台上实现了OFDM调制解调仿真系统,模拟了整个系统的信号流程,进行了OFDM仿真系统参数的选择和调制模块的仿真设计、论证各算法性能,并根据各种不同的条件:例如高斯噪声、多径衰落、有无保护间隔等,对系统的误码特性进行了评估,为正确评价实际OFDM系统的性能提供了有效的理论依据。4、论文以软件无线电思想作为指导,提出了以256点IFFT/FFT为核心和以512点IFFT/FFT为核心的两种OFDM算法模式并存于同一个硬件平台、且可预选的方案,它们在参数选取和性能指标上有所差异,均实现了相似的模块和功能。5、论文参考IEEE 802.16无线网络标准的参数设置,针对本设计系统的应用环境和系统硬件的性能速率,提出了一种应用于实验室环境的信号结构、帧格式等参数设计。6、论文基于TI公司的6701evm数字评估板卡,结合模拟前端搭建数字中频平台,设计了基带处理的DSP软件模块并进行系统调试,基本实现了一套完整的OFDM调制解调方案。

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