极限点

Linear frequency-modulated pulse is one of the most important large time-bandwidth product signals, but it demands large amount of calculations for digital processing.

针对TMS320C6201的特点，提出了在VLIW体系结构下，提高FFT并行运算效率的方法，从而使系统完成512点数字脉冲压缩的时间仅为124us，基本达到TMS320C6201的性能极限。

A cusp catastrophe model is presented to describe the behavior of sliding along one deep incompetent structural plane of a gravity dam foundation, and the sufficient conditions leading to instability are discussed. It is found that the instability of sliding relies mainly on the stiffness ratio k, the homogeneity index of the medium m and the geometry-mechanic parameter ξ and that the reliability of the traditional limit analysis method is deficient.

通过建立的模型分析，发现坝基滑动失稳主要取决于软弱面上复杂弹脆性介质和应变软化介质在应变软化拐点处的刚度比k、材料的均匀性指标m及几何－力学参数ξ；并给出了发生突变失稳的充分力学判据，指出传统的刚体极限平衡分析法存在一定的缺陷。

The field equations are derived using the post-Newtonian scheme, and the approximate solution is presented for a point mass with electric and dilaton charges.

用了后牛顿极限的方案，我们导得场方程式，并得到场源是带有电荷及Dilaton charge的点质量时，时空与场的近似解。

Aimed at the characteristics that design conditions of the foundation structures of offshore long-span-bridges are different from that of common bridges, the partial factors, the target reliability indices and the factors of wind load in different design fields were all analyzed. Then, three levels of target reliability indices which are 1.5, 2.0 and 2.3 respectively, and the corresponding factors of frequent value and quasi-permanent value of live loads based on JCSS model code with JC method were suggested.

针对大型跨海桥梁基础结构正常使用极限状态的设计条件不同于一般桥梁的特点，对各类不同设计领域的设计分项系数、目标可靠度指标及风荷载系数进行了分析和比较；然后以JCSS模式规范为基础，通过可靠度计算的验算点法，经过多次试算，建议了目标可靠度指标分别为1.5、2.0和2.3的三级可靠度水平及相应的可变荷载频遇值系数和准永久值系数。

November 21 to 25 of the three trading days, Haitong Securities on a daily basis by hundreds of millions of selling shares closed at the limit, fell from 13.31 yuan to 9.7 yuan, although the price limit in a row, the market is still rare Cares about buying because the market is expected to pass the sea there is a larger space down, but the accident was a big deal of excitement, 31 pen during a big deal to the price of 14.35 yuan (20% of the market value in excess of) hundreds of millions of shares traded,"This is a typical" fool to buy ", it was a big deal for use of the benefits."

11月21日至25日三个交易日，海通证券每天的证券买卖股票收于数以亿计的极限，从一十三点三一元下降到9.7元，虽然连续价格上限，市场仍然是罕见的关怀在购买，因为市场预期通过海上有一个更大的空间下降，但事故是在什么大不了的14.35元的价格兴奋大问题，31笔（20过剩的市场价值％）股票的交易数以亿计，&这是一个典型的&傻子买&，现在是使用的好处一个大问题。&

The elastoplastic dynamic behaviors of space lattice structures are thoroughly analyzed under multiple support excitation and simple support excitation.

通过对极限加速度峰值、最大节点位移时程、塑性杆件数量和分布及网壳破坏形态这些重要参数的统计、对比、分析和归纳，剖析了大跨空间网格结构在多点输入和一致输入下的强度破坏机理。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。