重新利用

The main contributions of the second part of this dissertation are focused on the cryptographic properties of logical functions over finite field, with the help of the properties of trace functions, and that of p-polynomials, as well as the permutation theory over finite field: The new definition of Chrestenson linear spectrum is given and the relation between the new Chrestenson linear spectrum and the Chrestenson cyclic spectrum is presented, followed by the inverse formula of logical function over finite field; The distribution for linear structures of the logical functions over finite field is discussed and the complete construction of logical functions taking on all vectors as linear structures is suggested, which leads to the conception of the extended affine functions over finite field, whose cryptographic properties is similar to that of the affine functions over field GF (2) and prime field F〓; The relationship between the degeneration of logical functions and the linear structures, the degeneration of logical functions and the support of Chrestenson spectrum, as well as the relation between the nonlinearity and the linear structures are discussed; Using the relation of the logical functions over finite field and the vector logical functions over its prime field, we reveal the relationship between the perfect nonlinear functions over finite field and the vector generalized Bent functions over its prime field; The existence or not of the perfect nonlinear functions with any variables over any finite fields is offered, and some methods are proposed to construct the perfect nonlinear functions by using the balanced p-polynomials over finite field.

重新定义了有限域上逻辑函数的Chrestenson线性谱，考察了新定义的Chrestenson线性谱和原来的Chrestenson循环谱的关系，并利用一组对偶基给出了有限域上逻辑函数的反演公式；给出了有限域上随机变量联合分布的分解式，并利用随机变量联合分布的分解式对有限域上逻辑函数的密码性质进行了研究；给出了有限域上逻辑函数与相应素域上向量逻辑函数的关系，探讨了它们之间密码性质的联系，如平衡性，相关免疫性，扩散性，线性结构以及非线性度等；讨论了有限域上逻辑函数各类线性结构之间的关系，并给出了任意点都是线性结构的逻辑函数的全部构造，由此引出了有限域上的"泛仿射函数"的概念；考察了有限域上逻辑函数的退化性与线性结构的关系、退化性与Chrestenson谱支集的关系；给出了有限域逻辑函数非线性度的定义，利用有限域上逻辑函数的非线性度与相应素域上向量逻辑函数非线性度的关系，考察了有限域上逻辑函数的非线性度与线性结构的关系；利用有限域上逻辑函数与相应素域上向量逻辑函数的关系，揭示了有限域上的广义Bent函数与相应素域上的广义Bent函数的关系，以及有限域上的完全非线性函数与相应素域上向量广义Bent函数之间的关系；给出了任意有限域上任意n元完全非线性函数存在性与否的完整证明，并利用有限域上平衡的p-多项式的性质给出了有限域上完全非线性函数的一些基本构造方法。

This kind of wells couldn"t be repaired with present technical, or the repair costs are too high so they should be abandoned. But indeed the reservoir underground also has developing value. By side-tracking technical, we can use original well site, needn"t to land lease and relay ground pipeline, also a segment of original wellbore can be used and no new well needed. So the repair speed expedites, ensures the stabilization of productivity. At the same time it can supply new work-over technical for oilfield which can server for oilfield all over the world.

采用侧斜工艺技术进行修复可以利用原井场，不用重新征地，不需重新铺设地面管线，可以利用一段原井眼，不影响原来的井网布置和开发方案，不需再钻更新井，恢复原有的注采关系，修复速度也将大为提高，保证了油田稳产，同时在技术上为油田提供新的修井手段，利用此项技术可以为国内外其他油田服务。

Then a BGPEOpt(BGP Egress Optimization Algorithm) algorithm is proposed to reduce the execution time of the typical algorithm by leveraging the .characteristics of cut link in the topology graph to reduce the frequency of recomputing traffic demand. Further more, mediate results are used in the iterative process to reduce the time of computing the IGP shortest distances from a source node to other nodes. Experimental results indicate that the running time of BGPEOpt reduced 7%~30% with the similar link utilization comparing to that of typical algorithms.

在此基础上，提出了静态阶段的BGP出口选择优化算法BGPEOpt(BGP Egress Optimization Algorithm)，BGPEOpt算法利用网络拓扑结构中割边的特殊性，减少流量矩阵重新计算的频率；同时利用算法在迭代过程中的中间结果，减少重新计算从一个源节点到其它节点最短路径的时间，从而提高了算法的时间性能。

Some examples of existing CDM projects are:installing a waste heat-recovery system into a coking plant; establishing a coal mine methane-utilisation scheme for households currently using coal, and installation of an electricity generation station fuelled by coal mine methane; capturing waste gases (blast furnace gas and coke oven gas) from the steel-making process for utilisation in a new, combined-cycle power plant; constructing a pilot biomass power plant, utilising cotton and corn straw as fuel, to generate electricity to be supplied to the North China grid system; capturing methane from a landfill to produce power for the local grid; establishing wind farms; and reforesting mixed-used forest in Guangxi.

现有的一些清洁发展机制项目例子有：在焦化厂安装余热回收系统；对家庭目前使用煤炭状况建立了煤矿甲烷利用计划并利用煤矿甲烷为安装的发电机提供燃料；从炼钢过程中获取废气用于一种新的循环电厂；利用棉花和玉米秸秆为燃料建设生物质能发电厂，发电提供给中国北部网格系统；从一个垃圾填埋场获取甲烷为本地网格发电；建立风力发电厂；对广西混合使用的森林进行重新植林。

Some examples of existing CDM projects are:installing a waste heat-recovery system into a coking plant; establishing a coal mine methane-utilisation scheme for households currently using coal, and installation of an electricity generation station fuelled by coal mine methane; capturing waste gases (blast furnace gas and coke oven gas) from the steel-making process for utilisation in a new, combined-cycle power plant; constructing a pilot biomass power plant, utilising cotton and corn straw as fuel, to generate electricity to be supplied to the North China grid system; capturing methane from a landfill to produce power for the local grid; establishing wind farms; and reforesting mixed-used forest in Guangxi.

现有的一些清洁发展机制项目例子有：在焦化厂安装余热回收系统；对家庭目前使用煤炭状况建立了煤矿甲烷利用计划并利用煤矿甲烷为安装的发电机提供燃料；从炼钢过程中获取废气用於一种新的循环电厂；利用棉花和玉米稭秆为燃料建设生物质能发电厂，发电提供给中国北部网格系统；从一个垃圾填埋场获取甲烷为本地网格发电；建立风力发电厂；对广西混合使用的森林进行重新植林。

Oracle reuses this space only when new rows are inserted in the block.

只有在数据块中插入新数据时，行目录区空间才会被重新利用。

Some of these reusable, such as pallets, etc; also available as a final product of wood packing material.

其中有些可重新利用，例如托板等；也可作为最终产品的木质包装。

How can a company re-use of all resources and data to create new business models and opportunities?

一个公司该如何重新利用所有资源和数据来创造新的商业模型和机会？

Nonetheless, a retired solider in Guangfu Township of Hualien County has invented a creative solution to re-use tetra paks - by making them into beautiful eco-hats.

而它的复合材质是难以资源回收，也不好掩埋，然而花莲县光复乡一位退伍军人，发明了一个有创意的方法，来重新利用这些铝箔包，把它们做成美丽的环保帽。

S . installed electric-generating capacity , the rate of consumption of fresh nuclear fuel will have reached at least 55,000 short tons of yellow cake per year （ assuming that some of the spent fuel is by then being recycled in the form of reprocessed uranium and plutonium ） or at most 62,000 short tons of yellow cake per year.

到2000年，美国能量预算中的核能份量，希望达到国家所需电力的近一半，核燃料的需要预计会达到每年127，000到164，000美吨（同样取决于重新利用的程度）。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！