基于Matlab多输入系统极点配置的研究

多输入系统极点配置问题的求解是一个繁琐的过程,采用Matlab语言编程可以方便地实现极点任意配置.本文分析了3种常用极点配置问题的算法,并针对这3种算法给出了一个具有实用价值的Matlab通用程序.通过实例进行比较,验证方法的正确性与有效性.     

基于CUDA平台的时域有限差分算法研究

文章针对传统时域有限差分(FDTD)算法的不足,以图形加速卡为核心,通过理论分析和数值模拟,研究并实现了基于CUDA平台的FDTD并行算法。CUDA是最新的可编程多线程的通用计算GPU模型,由于FDTD算法在空间上具有天然的并行性,因此非常适合在GPU上实现并行算。文章描述了在CUDA编程模型上的FDTD算法的设计以及优化过程,并通过数值仿真实验结果证明了基于GPU的并行FDTD算法可以大大减少计算时间,基于GPU加速已成为电磁场数值计算的研究热点之一。     

块匹配运动算法在红外视频处理中的应用

红外视频图像压缩是红外视频处理的重要技术基础.本文将Matlab语言引入红外视频图像处理,介绍了Matlab语言的主要特点,给出了典型块匹配算法及处理结果,对比说明不同算法适用于红外图像分析效果的优缺点,提出进一步改进的途径与方法.     

Matlab在经济管理中的应用

Matlab是功能强大的计算机软件,它在自动控制、机电和土木工程以及经济管理领域有着广泛的应用．我们给出了扩展的指派问题,且证明了该问题与原指派问题的最优值相同,然后利用Matlab语言,得到了指派问题的Matlab算法,对运输问题也给出了该问题的Matlab算法．计算实例表明,新的解题方法,既简易又精确．     

M函数的数值计算

M函数是由δ冲击模型寿命分布的计算中引出一类多重积分,它的计算对精确计算冲击模型寿命分布有很大帮助.文中利用蒙特卡罗法给出了M函数的近似数值计算算法,根据算法用Matlab编程计算,给出不同参数的数值表.     

二维FDTD算法的网络并行运算实现

提出了在由微机互连构成的机群(COW)并行计算系统上应用基于消息传递(Message Passing)的方式实现二维FDTD并行算法.通过区域分割,各个子区域在边界处与其相邻的子区域进行场值的数据传递,从而实现FDTD并行计算.文中还仔细分析了与FDTD相关的外围边界的并行化处理.我们采用MPI并行编程工具来实现并行FDTD算法.文中以二维金属方柱算例验证了算法的正确性和有效性,为运用FDTD方法进行电大尺寸复杂电磁问题数值模拟计算提供了一条有效途径.     

函数矩阵eA(t)与变系数线性微分方程组初值解的表达式

利用函数矩阵e^A（t）分别给出常系数微分方程组和满足一定条件的变系数线性方程组初值解的表达式．对求变系数线性方程的初值解，给出了几个充分条件．对具体实例的求解给出了一般算法，并用Matlab编程实现．     

二维FDTD算法的网络并行运算实现

提出了在由微机互连构成的机群（COW）并行计算系统上应用基于消息传递（Message Passing）的方式实现二维FDTD并行算法。通过区域分割，各个子区域在边界处与其相邻的子区域进行场值的数据传递，从而实现FDTD并行计算。文中还仔细分析了与FDTD相关的外围边界的并行化处理。我们采用MPI并行编程工具来实现并行FDTD算法。文中以二维金属方柱算例验证了算法的正确性和有效性，为运用FDTD方法进行电大尺寸复杂电磁问题数值模拟计算提供了一务有效途径。     

人机对数游戏的设计与实现

阐述了人机对数游戏的游戏规则,分析了该游戏的算法原理,给出了相应算法,并用C语言编程来实现人机对数游戏.     

Matlab与C/C++语言接口的方法

通过 Matlab与 C/ C 语言的混合编程 ,将 Matlab的代码编译成 VC可识别的代码 ,并成为可独立执行的动态链接库 ,从而实现了在 VC中直接书写 Matlab语言 ,驱动 Matlab运行 ,该方法可以提高 Matlab的速度和安全     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.