查询词典 scheme design

Experimental results show that in the case of an unincreased playout delay the scheme could remarkably decrease the probability of lost media unit. The scheme could keep continuous presentation of a single media stream, and require inter-media synchronization between audio and video.

实验结果表明，该算法在不增加播放时延的情况下可以显著地降低媒体单元丢失率，保证单个媒体流的平滑播放，并实现音视频的媒体间同步。

Based on the Waters'signature scheme, we put forward a new proxy multi-signature scheme and provide provable security proof in the standard model.

因此本文提出了一个新的基于身份的代理多重签名体制，并在随机预言模型下形式化的证明了该方案的安全性。

He and Wu proposed fast digital signature scheme, which is based on quadratic residue (called H-W digital signature scheme).

Shao设计的方案进行分析，并提出两种攻击方法。

In this paper,a forward-secure threshold signature scheme based on the Asmuth－Bloom threshold scheme is proposed.Its security is based on the difficulty of solving discrete logarithm in finite field and quadratic residue on some special conditions.

基于Asmuth－Bloom门限方案，设计了一种新的前向安全的门限签名方案，其安全性基于有限域上求解离散对数的困难性和在特定条件下求解二次剩余问题的困难性。

A quatrain may also be any group of four lines unified by a rhyme scheme. Quatrains usually follow an abab, abba, or abcb rhyme scheme.

四行诗通常是通过押韵组合成的四行诗节的诗，亚运形式一般为abab， abba，或abcb。

Compared with the traditional "signature then encryption scheme",the cipher text of our scheme is rathe...

与传统的先签名后加密的方案相比，本方案中密文长度有了明显的降低，在低带宽的要求下更加可行。

After analyzing and comparing two kinds of current control methods of three-phase VSR: indirect current control and direct current control, the author employs the latter as main control scheme, which is to control the phase and amplitude of ac-side current directly, by using dual closed-loop control scheme, through sampling currents of phase a and b and converting them by 3s/2r to get active component and reactive component of ac-side current.

分析比较了三相电压型PWM整流器的两种电流控制方法：间接电流控制和直接电流控制。

Comparison with the classical fourth-order LWC scheme shows that the NAD-type methods have many advantages. They can generate clearer snapshots of wave fields without any visible dispersion. To obtain the results without any numerical dispersion, the time cost by the LWC schemes is about 559, 1222 and 1955 times of that taken by ONADM, RNADM and SNADM, receptively. Besides, the storage space of ONADM is roughly about 3.3% of that needed for the fourth-order LWC scheme, while of RNADM and SNADM is about 5.8‰.

和经典的4阶LWC格式相比：NAD类算法在粗网格下可以有效的压制数值频散，得到清楚的波场快照；在达到消除数值频散要求时，4阶LWC格式的计算时间是ONADM计算时间的559倍，是RNADM方法计算时间的1222倍，是SNADM方法计算时间的1955倍；而此时ONADM方法存储量只有4阶LWC存储量的3.3%，RNADM方法和SNADM方法的存储量只有4阶LWC格式存储量的5.8‰。

The research work presented in this dissertation focused on developing the scheme and techniques of OPCPA. This dissertation gives the results of the theoretical and experimental investigation on OPCPA scheme. The validation of OPCPA at high energy level was demonstrated successfully. And some important results were achieved. Several key techniques related to developing table-top ultra-intense and ultra-short OPCPA laser system were put forward, for example, the generation of femtosecond seeding pulses, the precisely temporal synchronization of the pump and signal pulses, the pulse stretching and recompression, the OPCPA process with high energy conversion efficiency and etc. Based on the integration of these key techniques, a 1.46-TW/153-fs OPCPA table-top ultra-intense and ultra-high laser system has been developed, which, to the best of our knowledge, has generated laser pulses with the shortest pulse duration and the highest peak power among the joule level OPCPA systems in the world.

本学位论文工作主要是瞄准 OPCPA 这一国际上提出不久并处于初级阶段的新概念，重点开展了 OPCPA 新原理的理论模拟、实验验证，以及基于 OPCPA 新原理的小型化超强超短激光系统的研究与发展，创造性地解决关键科学技术问题，建立并发展相关关键科学技术，如超短脉冲种子源的产生、小型化强激光泵浦源的研制及其脉冲的整形、信号光与泵浦光的精确同步、高效率光学参量放大及高保真脉冲展宽与压缩等关键技术，并在单元技术的总体集成方面取得了重大创新性进展与突破性研究成果，获得了国际上高量级泵浦条件下 OPCPA 激光研究中峰值输出功率最高且脉冲宽度最短的总体领先结果。

So a novel content-based face image retrieval scheme is created based on this content feature-principle independent content feature. In this scheme, PICF based on higher order statistics is firstly extracted in the reduced space for effective representation of face images.

该方案首先在降维空间提取出基于高阶统计特性的主独立内容特征，应用提取的主独立内容特征进行有效的人脸图像描述。

Diabetes is a social disease that affects several million people worldwide.

糖尿病是一个社会性疾病，全世界有数百万人罹患此病。

I'll call you on Friday to see if we can reschedule our luncheon meeting at your convenience.

我星期五会给您打电话在您方便的时候我们重新安排我们的午餐约会。