查询词典 variable compression ratio

Then according to the good decreasing property of Chebyshev expantion, we prove the better characteristics of nonuniform sampling DCT in compression ratio and compression quality comparing with uniform sampling DCT.

然后根据Chebyshev展开式良好的下降特性，证明了文章提出的非均匀取样的DCT变换与传统的均匀取样DCT变换相比在信号的压缩倍数和压缩质量方面所具有的良好特性。

The algorithm realizes the compression for large number of data in high speed and high compression ratio in undamaged way .

该压缩算法在不损失数据的前提下，实现了对海量数据的快速，高压缩比压缩。

Using a low compression screw (I.E. general purpose 2:1 compression ratio) can result in unmelted particles and poor melt homogeneity.

使用一个低的压缩螺丝钉(也就是一般用途 2：1 压缩比)能造成 unmelted 粒子和贫穷的融化同种。

This terminal adopts DM642 as the processor, combines with the H.264 video compression algorithm which has highly efficient compression ratio, and sends constringent video data by wireless network. The key technique in the process of designing and realization is introduced, including the structure of software and hardware for the monitoring terminal. The design and realization of embedded network interface based on PPP protocol are analyzed, and a design method based on the HDLC API is given according to the NDK of TI Company.

该终端采用DM642作为处理器，结合高压缩比的H.264视频压缩算法，并通过无线网络发送视频数据；介绍了该终端设计和实现中的关键技术，包括监控终端的软、硬件结构；分析基于PPP的嵌入式网络接口的实现方法，并根据TI的网络开发包提出了一种基于HDLC API的设计方法。

Some methods aiming at the two problems have been researched. First, the optimal number of ATE site can be calculated based on a cost model of DAT-ATE. Second, the problem of test schedule which is equitant with two-dimensional Bin-Packing problem is presented. Then a TCG denotation satisfied with T-admissible rule is more convenient for combinational optimization. With Simulated annealing algorithm, better test scheduling results can be achieved; but there is no great optimization space because the efficiency of scheduling is greater than 90%. Third, A novel test compression method——Multi-capture testing is proposed to compress the stimuli. And the ATPG results show that MC achieves high compression ratio which is greater than 90% in some large-scale circuits. MISR, widely used in LBIST, is employed to compress the responses. The aliasing analysis demonstrates that the fault coverage reduction is little due to the existence of aliasing. Fourth, an improved TIC (called S-TIC) aiming at structured test is proposed based on ARM's TIC. A MC scheduling algorithm is proposed to compute the SoC test time and combine MC vectors to SoC test vectors. The scheduling results shows that test time is greatly reduced when using the proper scheduling priority.

首先，给出了低成本ATE的成本模型，根据此模型得到最低测试成本时系统级测试调度的基本参数——测试Site数；其次，本文将DAT-Scan方式的SoC测试调度等价为两维BP问题，为有效地求解该问题，将该BP问题表示为TCG图并通过模拟退火算法解决其求解过于复杂的问题，调度的结果表明该方法在测试时间上有一定改善，并指出DAT-Scan测试调度效率已经大于90％，进一步优化的空间较小；第三，本文尝试通过测试压缩来解决激励所需的测试带宽，提出了Multi-capture结构并解决了MC测试过程中的&矢量&退化问题，MC测试的ATPG结果表明其测试压缩率很高（大电路接近90％）；第四，在激励获得很高压缩比的情况下，测试响应也需压缩，本文采用LBIST中常用的MISR作为MC测试的响应压缩电路，理论分析和实验结果都证明了MC测试的别名对故障覆盖率影响较小（小于2％），并对两类别名的成因做了具体分析；第五，在MC测试及其响应压缩的基础上，本文改进了ARM公司的测试控制器TIC使之适合于MC测试，为了解决MC测试矢量合成问题，本文抽取了MC测试模型，通过固定优先级的MC测试调度模拟将MC矢量合成为ATE矢量，并模拟出了总的MC测试时间。

In this dissertation, through studying montanic grid DEM data in view of informatics, it is discovered that montanic grid DEM data possesses features of high information efficiency and low redundancy, which makes it impossible to gain high compression ratio with lossless compression methods.

用信息论观点对山区格网DEM数据进行了研究，发现山区格网DEM数据具有信息效率高、冗余度低的特点，揭示了用无损压缩对其进行压缩时效率较低的原因。

Firstly, studies for hypersonic inlets are reviewed, including issues related to interaction between boundary and shock wave in hypersonic inlet, unstarting/restarting phenomena, isolator, boundary bleeding for hypersonic inlet, internal/external compression ratio for inlet, inlets with sidewall compression, etc..

首先是高超声速进气道的研究进展，包括高超声速进气道中激波与附面层干扰、起动和再起动、隔离段、进气道附面层抽吸、进气道通道内外压缩比、侧压式进气道、Busemann进气道等。

So that we can calculate the void ratio in stable state after compression/consolidation from the dial gauge readings and draw the compression curve.

因此只要测的的稳定压缩量就可按上式算得相应的孔隙比，从而绘制土的压缩曲线。

With the development of digital codecs and compression technology, voice paper towards a high compression ratio, high-fidelity direction, from MP1 and MP2 to the MP3 format currently.

随着数字编解码及压缩技术的发展，语音文件也朝着高压缩比、高保真度的方向发展，从MP1、MP2到目前的MP3格式。

With the development of digital codecs and compression technology, voice paper towards a high compression ratio, high-fidelity direction, from MP1 and MP2 to the MP3 format currently.

毕业论文页数：68 字数：16194 摘要：随着数字编解码及压缩技术的发展，语音文件也朝着高压缩比、高保真度的方向发展，从MP1、MP2到目前的MP3格式。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。