查询词典 compression of data

Considering to the limitations of SDT algorithm, this paper proposes an improved SDT compression algorithm and compares compression quality between the two algorithms comprehensively.

针对SDT算法的弊端，提出了一种改进的SDT数据压缩算法，并进行了两种算法的性能对比。

S.From all the patients with MB-MCA and whose MCA were encased by the myocardium completely,30 patients were choosed randomly,their datasets were reconstructed seriatim by every 5%R-R interval,the whole cardiac cycle were reconstructed by 20 phases,the diameter of the mural coronary arteries of every phase was reviewed and measured,the phases were found out where the diameters were maximal and minimal,the systolic compression rate was calculated,Pearson correlation analysis was used to analyze the relation between length,depth,and degree of systolic compression of the mural coronary artery.

s表示。在所有存在MB-MCA并且MCA被心肌完全包饶的病例图像中，随机抽取30例图像的数据，以每隔5%R-R间期为一个重建时相，对每个病例0.100%整个心动周期分20个期相进行重建，观察并测量MCA在整个心动周期中管径的变化，探索管径最大和最小时的时相显示规律，计算MCA最大狭窄程度，应用Pearson相关统计分析MCA狭窄程度与MB的长度及厚度之间的相关关系。

According to the results of triaxial compression test, the relationship of cement soil mixed with or without glass fiber concerning stress and strain in different ages and confining pressures was analyzed. Meanwhile, some parameters of cement soil mixed with glass fiber, such as shearing strength parameter, modulus of deformation and relationship between compression strength and deformation modulus were obtained.

根据玻璃纤维-水泥土的三轴压缩试验结果，分析了其在不同围压与龄期下的应力-应变关系，并得到玻璃纤维-水泥土的剪切强度参数、变形模量E50及变形模量与抗压强度qu的关系。

Simulation results show that the use MATLAB to achieve discrete cosine transform image compression method is simple, fast, the advantages of a small error, which has greatly enhanced the efficiency of image compression and accuracy.

仿真实验表明，用MATLAB 来实现离散余弦变换的图像压缩，具有方法简单、速度快、误差小的优点，大大提高了图像压缩的效率和精度。

Java achieve a simple compression functionality, java virtual machine running available to the designated document compression.

java实现的一个简单的压缩功能，通过java虚拟机运行，可对指定的文件进行压缩。

We have successfully detected shock compression spectra of benzene on two pressure points of 25 GPa and 35 GPa. The spectra integral time is carefully chosen to be in simple compression state of the sample.

在25GPa、35GPa两个压力点成功测量了苯的冲击压缩光谱，摄谱时间严格限定在样品的一次冲击压缩状态。

Experiment results show that this method can be used for effective compression and precise reconstruction of the domestic frequency shift signal, UM71 signal and ZPW-2000 signal, being characteristic of simple computation, flexible-scheme compression and good adaptability to practical requirements of railway sites.

实验表明，该方法可以对目前铁路现场主要使用的国产移频信号、UM71信号和ZPW-2000信号进行有效压缩和精确重构，且具有算法简单和方案灵活等特点，能够满足铁路现场实际运用的需要。

The technology is similar to Volkswagen's recently announced Gasoline Compression Ignition system, which works by using spark plugs during start-up and hard acceleration, while relying on sparkless compression ignition, like a diesel, during low load situations.

这项技术与大众最近宣布的汽油压燃系统很相似，它利用起动和急加速时利用火花塞，而在低负荷情况下就像柴油机一样依靠无火花塞的压缩燃烧。

Continuous beam models with spring supports were set up to model end-plate connections. By comparing the results from tests with those from model analysis, the following conclusions can be drawn: during loading process, the neutral axis moves from the centroid axis to compression zone, not exceeding the center line of bolts inside the compression flange; ultimately, the tension flange and end-plate can be simplified as T-stub on the assumption that the axial forces of bolts in tension zone are equal to each other.

理论计算系建立带弹性支座的连续梁模型模拟端板连接，将模型计算结果与试验结果比较分析，结果表明：加载过程中，螺栓群中和轴逐渐从其形心轴向受压区移动，但不超过受压翼缘内侧螺栓中心线；极限状态下，受拉翼缘和端板可简化为等效T型件。

Results:1. Biopsy:(1) Non-nodular group: Symmetric enlargement of the inner glands was observed in 20 patients, 9 outer glands became thin because of the compression, 18 outer glands showed no obvious sign of compression.

结果：1、活检标本：非结节组：20例前列腺内腺对称性增大；9例外腺受压变薄，18例受压征象不明显。47点前列腺外腺穿刺活检均确诊为BPH。

Objective:To compare the response control and attention of Schizophrenic patients with that of the healthy controls by Integrated Visual and Auditorycontinuous performance test. To quantitate the impairment of cognitive function in patients, and to explore the relationship between cognitive function and the severity of the disorder.

目的：探讨精神分裂症病人在IVA持续操作测试中的反应控制能力、注意力等，并与健康人进行比较，从而量化精神分裂症病人的认知功能损害，并进一步探讨其认知功能与疾病严重程度的关系。

Main effective factors including subcooling degree, mechanical vibration, gas hydrate reformation, environment temperature, noncondensing gas and surfactant are analyzed.

指出过冷度、机械振动、重复生成水合物、环境温度、不凝性气体、添加剂是影响气体水合物生成的主要因素，还对R152a水合物的放冷进行了实验研究。