在讨论
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On the whole, we do as follows: Firstly, we list some conceptions and lemmas for later use. Secondly, we inducted the absolute value norm in the two-dimensional vector interspace, and also proved the two-dimensional vector interspace is a Banach Interspace. Thirdly, we define two-dimensional vector-valued functions on a interval by the definition of -fine partitions in part 1. Then, some sufficient and necessary conditions of integrabel are given, and discuss the property of the integral on two-dimensional vector-valued functions.
主要包括以下内容:在第一部分,我们介绍了本文所用到的几个基本概念和引理;第二部分,我们在二维向量空间中引入了绝对值范数,并且证明了二维向量空间是一个Banach空间;在第三部分中,通过第一部分关于-精细分划的定义,我们给出了在某区间上二维向量值函数积分的定义以及可积的充分必要条件,并讨论了二维向量值函数积分的一些性质。
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It consists of the next three aspects: firstly, we study Murthys' open problem whether the augmented matrix is a Q0-matrix for an arbitary square matrix A , provide an affirmable answer to this problem , obtain the augmented matrix of a sufficient matrix is a sufficient matrix and prove the Graves algorithm can be used to solve linear complementarity problem with bisymmetry Po-matrices; Secondly, we study Murthys' conjecture about positive semidefinite matrices and provide some sufficient conditions such that a matrix is a positive semidefinite matrix, we also study Pang's conjecture , obtain two conditions when R0-matrices and Q-matrices are equivelent and some properties about E0 ∩ Q-matrices; Lastly, we give a counterexample to prove Danao's conjecture that if A is a Po-matrix, A ∈ E' A ∈ P1* is false, point out some mistakes of Murthys in [20] , obtain when n = 2 or 3, A ∈ E' A ∈ P1*, i.e.
本文分为三个部分,主要研究了线性互补问题的几个相关的公开问题以及猜想:(1)研究了Murthy等在[2]中提出的公开问题,即对任意的矩阵A,其扩充矩阵是否为Q_0-矩阵,给出了肯定的回答,得到充分矩阵的扩充矩阵是充分矩阵,并讨论了Graves算法,证明了若A是双对称的P_0-矩阵时,LCP可由Graves算法给出;(2)研究了Murthy等在[6]中提出关于半正定矩阵的猜想,给出了半正定矩阵的一些充分条件,并研究了Pang~-猜想,得到了只R_0-矩阵与Q-矩阵的二个等价条件,以及E_0∩Q-矩阵的一些性质;(3)研究了Danao在[25]中提出的Danao猜想,即,若A为P_0-矩阵,则,我们给出了反例证明了此猜想当n≥4时不成立,指出了Murthy等在[20]中的一些错误,得到n=2,3时,即[25]中定理3.2中A∈P_0的条件可以去掉。
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As a result, the author discusses the thermodynamics habitus for the minerals either. With the calculation of the thermodynamics modeling, we run the dissolutionmodeling experiments for primary minerals (potash feldspar, albite, anorthite, andpyroxene, hornblende), which is under the conditions of organic acidic and 20 varietytemperature and pressure. The dissolution modeling experiments include 4 anorthitedissolution experiments, 8 pyroxene dissolution experiments, 8 hornblendedissolution experiments. We catch the records on the X ray diffraction, chemistryanalysis, SEMphotos, and the PH parameters. By theway, we discuss the dissolution habitus for the minerals either.
在热力学模拟计算的基础之上,进行20个不同温度和压力条件下,以有机酸作为溶解介质的储层砂岩骨架颗粒(钾长石、钠长石、钙长石以及铁镁暗色矿物中的辉石、角闪石等)的水—岩相互作用的溶解模拟实验,包括:4个钙长石的溶解实验、8个辉石的溶解实验和8个角闪石的溶解实验,获得了溶解模拟实验前后全部参与实验矿物的X射线衍射分析、化学全分析数据、扫描电镜照片,以及介质流体在实验过程中化学参数pH值的检测,在此基础上讨论了铁镁暗色矿物、长石等铝硅酸盐矿物在埋藏成岩过程中酸性介质条件下的溶解习性。
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According to the principle of strontium isotope stratigraphy, we attempt to determine the age of the boundaries for Campanian/Santonian and Maastrichtian/Campanian by 87Sr/86Sr ratios for Gamba section in southern Tibet.
在与国际上同期海相地层锶同位素演化曲线对比的基础上,研究了晚白垩世海相碳酸盐锶同位素组成与主要地质事件的关系;在将本研究锶同位素数据融入到全球中新代海水锶同位素曲线的基础上,综合作出了中新生代海平面变化和锶同位素对照曲线,讨论了全球风化速率,造山事件,气候,海平面变化以及灾变性事件对中新生代海水锶同位素的控制作用;根据锶同位素地层学原理,本研究尝试将碳酸盐锶同位素组成用于海相地层定年上,利用已有的全球海水87Sr/86Sr值-年龄数据库和测试的藏南晚白垩海相碳酸盐的87Sr/86Sr值,确定了岗巴剖面Campanian/Santonian和Maastrichtian/Campanian阶界线,标定了广泛分布于白垩纪的厚壳蛤化石的年龄;本研究还将这些方法推广到了塔里木盆地井下奥陶纪地层的年龄标定,确定了中/上,中/下奥陶统界线,从锶同位素角度获得了古岩溶作用证据,显示锶同位素地层学在解决海相地层对比,年龄确定及在岩溶型油气储层研究中的潜在价值和良好应用前景。
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Secondly,we firstly study the properties of functions with values in a uni-versal Clifford algebra 〓,and we obtain the following very important basictheorems in universal Clifford analysis:Cauchy's integral formula,Cauchy's inte-gral theorem,the mean value theorem,the three versions of the maximum mod-ulus theorem,the Taylor's expansion,the Laurent's expansion and the residuetheorem etc..All of these results generalized the classical results.
第二,本文所讨论的各种函数性质以及所得的结果都在泛Clifford代数〓上所做的工作,它一方面包含了从前在泛Clifford代数〓上所做的工作,所得到的结果更广泛、更漂亮、更自然,另一方面,本文也是迄今为止第一次建立起来了在泛Clifford分析中与经典函数论相对照处基础地位的LR正则函数在特异边界上的Cauchy积分公式、Cauchy积分定理、平均值定理、极大模原理的三种表达形式、Taylor展式、Laurent展式留数定理等深刻的结果。
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Based on the research results of Chaos theory, in this dissertation, it has made detailed analysis of the chaotic signal generator. Firstly, the characteristic and various detection methods of chaotic signal are recommended. Secondly, with the aid of software, such as MATLAB, PSPICE, EWB, etc, discussion of the process of generating chaotic signal proceeds. Through simulation, the output result of several kinds of chaotic circuit are analyzed and compared. Thirdly, aiming at Chuas chaotic circuit, through debugging, the impacts by components and parts in the circuit, such as operation amplifier, capacity, inductor, etc, has been further investigated. And then provides a new scheme to implement Lorenz chaotic system, the circuit design and analysis are presented in detail and it can be realized by the hardware of programmable arrays FPGA, the experimental results indicate that this scheme has the advantages of easy operation, flexible design and high efficiency. An application example in secure communications is also provided. Finally, through picking up the characteristic parameter-Lyapunov exponent of the Chaos we can analyze the performance of different chaotic signal generators.
本文在混沌理论研究成果的基础上,对混沌信号的产生做了详细的分析,涵盖以下内容:首先介绍了混沌的定义,混沌信号的基本特性和各种判别方法,特别是对简单的一维Logistic映射的硬件实现问题做了初步探索;其次对混沌信号的产生方法进行讨论,借助于MATLAB、PSPICE、EWB等仿真软件,对几种混沌电路输出的混沌信号进行了分析比较,并在此基础上针对典型三阶连续自治系统Chua's电路作进一步实验研究,通过混沌电路调试,深入研究电路中各元器件,特别是运算放大器、电容、电感等对混沌信号时域以及频谱的影响;再次研究连续混沌系统的数字化硬件产生,设计了Lorenz混沌电路在现场可编程门阵列FPGA上实现的新方案,在保密通信中的应用实验结果表明该方案具有操作简单、设计灵活、效率高等优点;最后针对不同混沌系统,采取不同算法,提取混沌特性参数Lyapunov指数,进而对不同的混沌信号发生器的性能进行了分析。
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Furthermore, the first-order optimality condition and its equivalent reformulations for generalized semi-infinite max-min programming with a non-compact set are presented using the lower-Hadamard directional derivative and subdifferential.2. Chapter 3 studies the gradient-type methods for unconstrained optimization problems. Section 1 proposes a new class of three-term memory gradient methods. The global convergence property of the method is established. Furthermore, in order to improve the convergence property of the method, a new class of memory gradient projection methods is presented with the property that the whole sequence of iterates converges to a solution to the problem under the conditions such as pseudo-convexity and continuous differentiability of objective function. In section 2, two new classes of methods, called gradient-type method with perturbations and hybrid projection method with perturbations, are proposed. In these methods, non-monotone line search technique is employed, which makes them easily executed in computer.
第3章研究了无约束优化问题的梯度型算法,第1节提出了一类新的三项记忆梯度算法,讨论了算法的全局收敛性,进一步提出了一类新的具有更好收敛性质的记忆梯度投影算法,并证明了该算法在函数伪凸的情况下具有整体收敛性,第2节在非单调步长搜索下提出了带扰动项的梯度型算法及其混合投影算法,这两类算法的一个重要特征就是步长采用线搜索确定而不象许多文献中那样要求步长趋于零,这样更容易在计算机上实现,在较弱的条件下证明了这些算法的全局收敛性,数值算例表明了算法的有效性。
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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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As a method, scholasticism involves (1) the close, detailed reading of a particular book recognized as a great or authoritative work of human or divine origin - for example, Aristotle in logic, Euclid in geometry, Cicero in rhetoric, Avicenna and Galen in medicine, the Bible in theology - and (2) the open discussion in strict logical form of a relevant question arising from the text.
作为一种方法,士林涉及( 1 )关闭,详细阅读一书,特别是公认的作为一个伟大的或权威性的工作人或神的原产地-例如,亚里士多德在逻辑上,在欧几里得几何,西塞罗在修辞,阿维森纳和盖伦在医学上,圣经在神学-和( 2 )公开讨论在严格的逻辑形式有关问题所产生的案文。
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Think continually how many physicians are dead after often contracting their eyebrows over the sick; and how many astrologers after predicting with great pretensions the deaths of others; and how many philosophers after endless discourses on death or immortality; how many heroes after killing thousands; and how many tyrants who have used their power over men's lives with terrible insolence as if they were immortal; and how many cities are entirely dead, so to speak, Helice and Pompeii and Herculaneum, and others innumerable.
不断地想这些事:有多少医生在频繁地对病人皱拢眉头之后死去;有多少占星家在提前很久预告了别人的死亡之后也已死去;又有多少哲学家在不断地讨论死亡或不朽之后死去;多少英雄在杀了成千上万人之后死去;多少暴君,仿佛他们是不死的一样,在以可怕的蛮横手段使用他们对于人们生命的权力之后死去;又有多少城市,比如赫利斯、庞培、赫库莱尼恩以及别的不可计数的城市被完全毁灭。
- 推荐网络例句
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Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).
呼气,收缩臀部肌肉;拱起身体,尽量抬起头来,右腿伸直朝向天花板(膝微屈,以避免肌肉紧张)。
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The cost of moving grain food products was unchanged from May, but year over year are up 8%.
粮食产品的运输费用与5月份相比没有变化,但却比去年同期高8%。
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However, to get a true quote, you will need to provide detailed personal and financial information.
然而,要让一个真正的引用,你需要提供详细的个人和财务信息。