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I was loath to spend our last Shot too hastily; so I call'd my Servant, not my Man Friday, for he was better employ'd; for with the greatest Dexterity imaginable, he had charg'd my Fusee, and his own, while we were engag'd; but as I said, I call'd my other Man, and giving him a Horn of Powder, I bad him lay a Train, all along the Piece of Timber, and let it be a large Train; he did so, and had but just Time to get away, when the Wolves came up to it, and some were got up upon it; when I snapping an uncharg'd Pistol, close to the Powder, set it on fire; those that were upon the Timber were scorcht with it, and six or seven of them fell, or rather jump'd in among us, with the Force and Fright of the Fire; we dispatch'd these in an Instant, and the rest were so frighted with the Light, which the Night, for it was now very near Dark, made more terrible, that they drew back a little.
我不愿匆匆放完最后一排枪,就叫来了自己的仆人。我没有叫星期五,而是叫了我新雇的那个水手。星期五有更重要的任务要完成。在我们开火的时候,他以惊人的速度给我和他自己的枪装弹药。所以我说,我叫的是新雇的仆人。我给了他一角火药,命令他沿着那根长木头把火药撒下去,撒成一条宽宽长长的火药线。他照着办了。他刚转身回来,狼群就冲了过来,有几只甚至已冲上了那根长木。我立即抓起一支没有放过的手枪,贴近火药线开了一枪,使火药燃烧起来。冲上木料的几只狼给烧伤了;其中有六、七只由于火光的威力和惊恐,竟连跌带跳地落入我们中间。我们立即把它们解决了。其他的狼被火光吓得半死,加上这时天已黑下来,火光看起来就更可怕了,这才使那些狼后退了几步。
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Based on the summarizing of the exiting algorithms of the texture mapping and antialiasing, this paper goes deeply into the basic theory and processing of texture mapping. The texture compress algorithm which can satisfy the need of the memory and time is given for the stochastic sampling in the inverse texture mapping; the geometry transformation in the texture mapping are discussed and the concepts of the unitary parametrization and the patch parametrization is proposed, some kinds of the unitary parametrization methods of parametric surfaces and the geometry transformation in the patch parametrization are also presented; in order to solve the aliasing in the parametrization of intermediate surface-sphere in two-part texture mapping, an area-preserving transformation is presented also; to improve the quality of the graph the aliasing in the texture mapping is analyzed from the aspect of signal process, and the modified summed-area tables algorithms is proposed; the distortion of the scanline conversion algorithms under perspective transformation is analyzed and the proper interpolation algorithm is presented so the aliasing problem of the polyhedral object after the unitary parametrization is efficiently solved.
本文在总结现有的纹理映射和反走样算法的基础上,深入研究了纹理映射的基本原理与过程,根据反向纹理映射对纹理随机采样的特殊要求,提出了一种可满足存储空间和寻址时间的纹理压缩存储算法;通过对纹理映射中几何变换理论的进一步深入探讨,提出了整体参数化和面片参数化的概念,并给出了参数化曲面的各种整体参数化方法和面片参数化的几何变换形式;针对现有的两步映射算法所存在的中间曲面—球面的参数化问题,提出一种等积映射方法,较好地实现了由非参数化面片拼接而成的多面体表面的纹理映射;从信号采样的角度深入分析了纹理映射中走样产生的原因,提出了改进的区域求和表算法,使图形生成的效果有所提高;还分析了一般的扫描线算法在透视变换中所存在的问题,提出了一种正确的插值算法,从而解决了整体参数化后多面体表面纹理映射的几何变形问题。
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The analysis of the optical signal transmission characteristics and the physical parameters provides the theoretical foundation for optimizing the design and improving the performance of AWG; and the optimizing design numerical value calculation method solves the complex problem of the optimizing design of the AWG, it can also provide a way for AWG computer aided design system; the AWG optical signal processing analysis provide a way for optical signal Fourier transform, serial and parallel transmission, circle shift, matrix transform and differential processing; the optical signal processing characteristics of AWG develop AWG to use for new field, and the optical signal processing will play an important role on all-optical networks in the future; by the definition of the wavelength transform matrix of the AWG, the signal output positions that come from these input signals of the different wavelength or the same wavelength but the different input ports and carrying different signals can be accurately determined, and the wavelength transmission matrix plays an important role for analyzing the routing of the complex optical network, or designing the network nodes such as the optical path add/drop multiplexer and optical cross connect device; the wavelength transmission matrix also provides a method for monitoring and managing the wavelength transmission of the optical network nodes; e analysis of the AWG' OXC node structure and wavelength routing provides a way for realizing the OXC, especially for multi-path/multi-wavelength OXC and the intelligence node of the optical networks; by the studying of the control plain characteristics, router, traffic engineering, program and the improved arithmetic of the wavelength routing, the method for realizing the GMPLS' OXC optical transport network is provided, and it play an important role for the study of the automatic switched optical network; the time-frequency analysis can provide more information about the dispersion and energy changes of .the pulsed light transmission in the singlemode fiber, it also provides more useful parameters for analyzing the dispersive accumulating and dispersive compensating.
AWG光信号传输特性与相关参数的分析,为进一步优化设计AWG及提高其性能提供了理论依据,而优化设计计算数值方法解决了AWG优化设计计算的复杂问题,为进一步建立AWG的计算机设计系统提供了基础;AWG光信号处理的特性分析,提出了AWG应用的新领域,为光信号的傅立叶变换、串并传输、循环移位、矩阵变换、微分处理等提供了一条途径;波长传输矩阵变换关系的建立,不仅得到了确定多路AWG每路信号从输入端口到输出端口的准确输出位置的方法,而且在分析应用AWG实现复杂的光通信网络路由的连接、特别在设计分插复用器和交叉连接器等网络节点时有重要的作用,能有效而准确地确定波长的路由关系,为实现节点波长传输路由的监控和管理提供有效手段;基于AWG的OXC结构和波长路由的确定为实现OXC技术、特别是多路多波长的OXC和光网络的智能节点技术提供了有效的方法;控制平面的特征、路由器、流量工程、程序及改进的波长路由算法的研究实现了基于GMPLS的OXC光传送网络的控制平面,为建立自动交换光网路提供了一定的基础;时频分析可以更直观和更清晰地描述脉冲信号在单模光纤中传输色散和能量的变化,为色散积累和色散补偿提供有效的分析参数。
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Some new method is presented in this paper: A. An Integrated parameters computation method to analysis asynchronous operation of the turbine generator is given, including the equivalence of short circuit and open circuit of field windings, deducing boundary condition of 〓 method and computing frequency parameters. B. A new memory structure for sparse complex matrix and a PCCG method based on it are introduced to save memory and computation time. C. An equivalent method of vacuum is presented, and effectively eliminate the effect of corner point and accelerate convergence of PCCG method. D. Coupling the computation of electromagnetic and temperature field is discussed and model for computing temperature field of the turbine generator rotor at asynchronous operation is built.
文中提出了以下新方法:(1)在失磁异步运行转子三维涡流场计算中提出了完整的参数计算方法,其中包括励磁绕组开、短路的等效,〓法边界条件的推导及频率参数的计算方法;(2)提出了铁心内空气域的等效方法,有效地解决了开槽引起的角点奇异问题,并提高了方程组的迭代收敛速度;(3)在〓法有限元模型中,创立了一种能节约内存、提高计算速度的压缩存储矩阵格式,并建立了基于该格式的方程组解法;(4)提出了涡流电磁场和温度场两种不同场计算的合理结合方法,建立了转子三维稳态和时变温度场的有限元计算模型。
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I was loath to spend our last shot too hastily; so I called my servant, not my man Friday, for he was better employed; for with the greatest dexterity imaginable, he had charged my fuse, and his own, while we were engaged; but as I said, I called my other man, and giving him a horn of powder, I bad him lay a train, all along the piece of timber, and let it be a large train; he did so, and had but just time to get away, when the wolves came up to it, and some were got up upon it; when I snapping an uncharged pistol, close to the powder, set it on fire; those that were upon the timber were scorched with it, and six or seven of them fell, or rather jumped in among us, with the force and fright of the fire; we dispatched these in an instant, and the rest were so frightened with the light, which the night, for it was now very near dark, made more terrible, that they drew back a little.
我不愿匆匆放最后的一枪,就叫来了自己的仆人,但不是"星期五";"星期五"正在做更重要的事,在我们忙碌的时候,他以惊人的速度给我和他自己装弹药。所以我叫的是新雇的仆人,我给了他一角火药,命令他把火药铺在长木头上,铺成一条又宽又厚的火药线。他照着做了。他刚离开,狼群就冲了过来,有几只已经上了长木头。我拿着我没有开过火的手枪,贴近火药,扣动扳机,火药顿时燃烧起来。长木头上的那几只狼被火药烧伤了;有六、七只狼,由于火药的威力,也由于害怕火光,跌倒或跳进我们中间,我们立即把它们解决了。其他的狼也被火光吓住了,这时天色近乎漆黑,火光在黑夜里更加可怕,狼这才后退了几步。
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The main jobs of this paper are as followed: 1 The reuse of the frame design technology for aircraft assembly fixtures is researched. a frame line part library is built with the templet driven technology, the reuse of the frame line part come true by the tools for instantiation and instance modification. The design resources are effectively used, some repeating work is cut. 2 Two methods to obtain the assembly feature are proposed: the straight way by the Enumeration method and the indirect way by project features to the assembly plane. All of the assembly features of the frame and the adjustable bearings are obtained by these two methods which makes the frame automatic assembly technology for aircraft assembly fixtures come true. 3 The frame automatic assembly technology aircraft assembly fixtures based on assembly features is researched. A binary tree assembly model is used to express the assembly information of the frame for aircraft assembly fixtures, the automatic assembly between the frame, the aircraft and the adjustable bearing is completed within the three steps: distribute, obtain and evaluate assembly feature. Finally, the efficiency of the frame assembly design is proved. 4The frame interpart modeling technology for aircraft assembly fixtures is researched, the intersection methods are concluded and the arithmetic of the single-cut, double-cut and inter-cut intersection is proposed, the interpart fast modeling of the frame design for aircraft assembly fixture come true. 5Based on the researches mentioned before, a sub-system of frame fast design for aircraft assembly fixture is developed on CATIA. The sub-system is used to design the aircraft assembly fixtures in a large aeronautics corporation and make a good- effect.
论文的主要工作如下: 1研究了飞机装配型架骨架设计重用技术,在总结归纳骨架线框结构类型的基础上,应用模板驱动的方法建立了骨架线框库,通过骨架线框零件的实例化和离线编辑实现骨架线框的重用,有效利用设计资源,减少重复劳动; 2提出穷举几何对象的装配特征直接获取方法,遍历零件模型的几何对象,从中捕捉所需装配特征,该方法简捷、高效;提出向装配面投影的装配特征间接获取方法,该方法在现有特征基础上生成装配特征,解决了部分装配特征难以直接获取的问题; 3研究了基于装配特征的飞机装配型架骨架自动装配技术,采用一种二叉树装配模型表达骨架的装配关系,并通过装配特征的分配、获取和赋值三个步骤,实现了骨架分别与飞机产品和可调支承的自动装配,避免了繁琐的人工交互操作,提高了骨架设计的效率和规范化程度; 4研究了飞机装配型架骨架零件间建模技术,在总结归纳骨架元件相贯处理方式的基础上,提出了骨架元件单剪切相贯、双剪切相贯和互剪切相贯的实现算法,简化了骨架相贯处理的过程; 5基于以上研究,在CATIA平台上开发了飞机装配型架骨架快速设计子系统,并应用于某大型航空企业的装配型架设计,提高了设计效率和设计质量。
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In time of realizing moderate unglue hemp, it developed a series of new products like low polymeric xylose, pectin, environmental fiberboard and organic manure that reaches delamination and multilevel use of hemp's combination and disassembly.
技术特点:1、项目基于大麻纤维和麻杆等化学组成和结构的差异,开发了环境友好的汽爆新技术,为实现大麻的清洁、高效全利用奠定了基础。2、建立的大麻清洁脱胶方法,既提高了麻皮纤维的制成率和分裂度,又不损伤纤维结构,显著提高了大麻的可纺性,是一种创新的大麻脱胶技术。3、提出了利用大麻杆无胶制备环保型纤维板的方法,解决了成本高和二次污染问题。4、该项目突破依靠单一技术或单一组分利用的技术路线,按照生态工程原理,建立了大麻产品深加工利用的技术体系和综合利用新工艺,在实现麻皮纤维适度脱胶的同时,开发了低聚木糖、果胶、环保型纤维板和有机肥料等系列新产品,达到了大麻组分的分层多级利用。
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In this project, we study the theory of higher order differential equations in Banach spaces and related topics. We solve an open problem put forward by two American Mathematicians and two Italian Mathematicians concerning wave equations with generalized Weztzell boundary conditions, introduce an existence family of operators from a Banach space $Y$ to $X$ for the Cauchy problem for higher order differential equations in a Banach space $X$, establish a sufficient and necessary condition ensuring $ACP_n$ possesses an exponentially bounded existence family, as well as some basic results in a quite general setting about the existence and continuous dependence on initial data of the solutions of $ACP_n$ and $IACP_n$. We set up quite a few multiplicative and additive perturbation theorems for existence families governing a wide class of higher order differential equations, regularized cosine operator families, regularized semigroups, and solution operators of Volterra integral equations, obtain classical and strict solutions having optimal regularity for the inhomogeneous nonautonomous heat equations with generalized Wentzell boundary conditions, gain novel existence and uniqueness theorems,which extend essentially the existing results, for mild and classical solutions of nonlocal Cauchy problems for semilinear evolution equations, present a new theorem with regard to the boundary feedback stabilization of a hybrid system composed of a viscoelastic thin plate with one part of its edge clamped and the rest-free part attached to a visocelastic rigid body. Also we obtain many other research results.
在本研究中,我们对Banach空间中的高阶算子微分方程的理论以及相关理论进行了深入研究,解决了由美国和意大利的四位数学家联合提出的一个关于广义Wentzell边界条件下的波动方程适定性的公开问题,恰当地定义了Banach空间中的高阶算子微分方程Cauchy问题的算子存在族及唯一族,建立了齐次和非齐次高阶算子微分方程Cauchy问题适定性的判别定理,获得了关于高阶退化算子微分方程的算子存在族、正则余弦算子族、正则算子半群、Volterra积分方程解算子族的乘积扰动和混合扰动定理,得到了关于以依赖于时间的二阶微分算子为系数的一大类非自治热方程非齐次情形下的时变广义Wentzell动力边值问题的古典解、严格解的最大正则性结果,获得了半线性发展方程非局部Cauchy问题广义解和经典解存在唯一的判别条件,从实质上推广了现有的相关结果;得到了一部分边缘固定而另一部分附在一粘弹性刚体上的薄板构成的混合粘弹性系统的边界反馈稳定化的新稳定化定理,还建立了一系列其他研究结果。
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This paper has done a deeply research on the evaluative method, which focus on maintaining and ensuring the camion. After deeply analyzing the maintain theory of army equipment and the stratagem 's characteristic and combining the current systems engineering evaluating theories and methods, it has analyzed and solved all limitations that coming forth when a single model is used to evaluate the maintain capacity. After analyzing and ameliorating the judgment of AHP's coherence, the calculation of the expert power value and the optimizing of the more-extreme judging model, a new calculation method, the multidimensional complex calculation theory, is presented, which much fits for the evaluative calculation of the camion. The new theory's feasibility and the evaluation's reliability have been proved in theory in this paper. This paper also analyses the principle and the program, which is about building a camion evaluating system. According to the multidimensional complex calculation theory, an evaluative model has been built. Applying the levels analytical method, this paper fixes on the calculation of every target's power, brings the optimization allot precept of macro spatial resource, optimizes the resource of the maintainability of theater of operations' vehicle, which offers a theory foundation for optimizing of the resource space. The research not only brings out a uniform standard for the evaluating of the maintain ability of the camion, but also presents a theory foundation and method for perfecting the camion maintain system.
本文对军用车辆维修保障能力评估的方法论进行了深入研究,在理论上通过对军事装备维修理论及战略特性的深入剖析,结合现有系统工程评估理论、评估方法的特点,分析解决了应用单一模型评估装备维修能力问题的各种缺陷,就AHP法判断矩阵一致性判定,群策专家权重值的确认及多元评判模型的优化进行了研究和改进,形成了适应军事车辆维修保障能力评估应用的新算法--多元复合算法理论,对这一创新评价理论的科学性及评估可靠性进行了理论证明和算法应用;研究分析了建立军用汽车维修保障能力评估指标体系的原则和程序,并按照多元复合算法的理论,建立了车辆维修保障能力评估模型;应用层次分析法的原理,明确了各指标权重的算法,提出了宏观空间维修资源优化分配方案,优化了战区车辆装备维修能力资源空间,为某一具体车辆装备维修能力形成所需维修资源空间的优化提供了理论依据;本文的研究既为军用车辆装备维修保障能力评估提供了统一的衡量标准,也为军事装备维修保障系统的进一步完善提供了理论依据及方法手段。
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The method of obtaining time delay parameters with the reverse access channel is discussed. The modified algorithms of classic correlation methods of TOA estimation are proposed. Noncoherently combining algorithm and group coherent combining algorithm are given. They decrease the computational complexity and are more suitable for implementations in practical systems. The leading edge detection algorithm is proposed to mitigate the effect of multipath in TOA estimation. Then the secondary search method is proposed, it can solve the matching issue of PN code in CDMA systems. The location algorithms based on LS are discussed; include circular trilateration with LS, hyperbolic trilateration with reference differencing, hyperbolic trilateration with sequential differencing and circular trilateration with TOA differences. The design and implementation of wireless location system based on TOA/TDOA in CDMA2000 systems are given. The location process is discussed, and the hardware and software implementation of TOA estimation are given. Finally, the wireless location system which uses TOA estimation and LS location algorithms above is tested in the real environment.
文中讨论了采用CDMA2000反向链路中的接入信道来获取时延的方法和过程;对TOA估计的传统的相关法进行了改进,提出了非相干合并相关法和分组合并相关法,减少了基于相关的时延估计算法的运算量,提高了算法的实用性,对算法进行了仿真和性能分析;采用边缘检测技术有效减少了TOA参数估计中的多径干扰,提高了时延参数估计的准确度;提出了一种TOA估计的二次搜索法,解决了多个定位测量单元同时进行TOA估计的PN码匹配问题,进一步了提高TOA估计的精度;在采用时延值的定位算法中引入了基于LS的圆周法、基于参考差的双曲线法、基于相邻差的双曲线法和基于TDOA的圆周法,讨论了各算法的应用条件,进行了算法性能的仿真分析;给出了CDMA2000系统中的TOA/TDOA的无线定位的系统方案和实现流程,并对TOA值估计算法进行了软硬件实现,还对采用TOA估计算法、LS定位算法和定位系统设计方案实现的定位系统的进行了现场定位性能测试。
- 推荐网络例句
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On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.
另一方面,更重要的是由于城市住房是一种异质性产品。
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Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.
气候直方图是将所收集的降水量测定值,分为几个相等的区间作为横轴,并将各区间内所测定值依所出现的次数累积而成的面积,用柱子排起来的图形,也叫做柱状图。
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You rap, you know we are not so good at rapping, huh?
你唱吧,你也知道我们并不那么擅长说唱,对吧?