反自反性

The result of experiments show that resynthesized speech signals form the its correlogram by auditory model inversion is nature and robust in noisy environment.

实验结果表明，我们通过听觉模型反演从信号的自相关图谱中恢复出的语音信号，具有较好的自然度和良好的噪声鲁棒性。

This present algorithm further distinguishes itself through sufficiently utilizes the advantage that the vector sensors provide from other beam space DOA algorithms in several regards: 1 beams are formed in the vector-field domain; 2 produce at moderate signal-to-noise ratio estimation performance comparable to the traditional scale array methods;3 these vector-field beams are formed blindly using no apriori source information and coarse estimates of the direction cosine are derived to start off MUSICs iterative search so it demand less computation; 4 deploy agilely , since the fact that the output channel is various .

本文提出了矢量传感器阵列的自适应综合校准补偿方法，还提出利用单矢量传感器速度协方差矩阵分解来求解目标源方位，使得我们不要求校准源是合作性的，也无需知道校准源的先验知识，这比起常规辅助源校准方法具备较大宽容性。随着高性能阵列处理技术及数字信号处理硬件的快速发展和矢量传感器制造工艺的不断成熟，矢量传感器将在新型水雷、低频远程智能鱼雷、声纳浮标、低频拖曳线列阵和新型舰壳声纳，灵巧传感终端，战场监视系统，反隐形雷达，通讯等军民用领域取得良好的发展应用前景。

On the basis of simulating the physical wind field using the linear Autoregressive model, finite element analysis method is adopted to calculate deformation of grass with branching structure and displacement method based on the center combining with programmable GPU technology is used to calculate deformation of grass with star structure,and then both realistic and real-time requirements will be obtained through simulating dynamic grassland scenes.

本文反在采取线性自归归模型模拟物理威宽场的基本上，采取了无限元剖析方式和基于外央位移方式开合闭于开枝构造草体和星形构造草体入行变形盘算，同时闭于星形草体变形盘算解开了否编程的GPU技巧，使得动态草地场景的生败既知脚了实实感请供，也知脚了实时性请供。

Structural model based on SAXS patterns and TEM images shows that the ordered mesostructure consists of 8 large and 16 small caged pores, of which 8 large cages are arranged tetrahedrally on a diamond-like lattice.

第三章采用水溶性resol型酚醛树脂预聚体与反相三嵌段共聚物PPO-PEO-PPO R1PO_(53EO_(136)PO_(53)体系，通过溶剂挥发诱导自组装过程，首次合成出金刚石面心立方(Fd3m)结构的有序介孔碳材料。

UV-B radiation decreased significantly thequantity of bacteria,actinomyces and fung.UV-B rediation affected significantly the quantity of azotobacter, nitrobacter,denitrifying bacteria, cellulose decomposing bacteria and phosphate decomposing bacteria,but these effects depended ondevelopmental stages of spring wheat.The population qua...

UV－B辐射能显著降低细菌总数以及放线菌和真菌数量；UV－B辐射对好氧性自生固氮菌、亚硝酸细菌、反硝化细菌、好氧性纤维素分解菌和解磷细菌数量也有显著的影响，但这种影响具有生育期之间的差异，春小麦根际土壤微生物种群数量与土壤营养成分有关。

However, its long-term use, especially in patients with gastroesophageal reflux disease, would cause potential risks, such as hypergastrinemia along with reduced gastric acidity, hyperplasia of enterochromaffin cells, gastric neoplasms, rebound gastric acid hypersecretion when PPI treatment is stopped, increased oxyntic gastritis in patients with H.

它们对于消化性溃疡(peptic ulcer，PU)、胃食管反流性疾病(gastroesophageal reflux disease，GERD)以及联合抗生素根除幽门螺杆菌(helicobacter pylori，Hp)等疗效显著。自1981年第一个PPI奥美拉唑用于临床研究以来，全球已有4亿多患者使用过PPIs，一些GERD患者的连续用药时间超出10年以上。

This paper presents a nonlinear robust adaptive excitation control design procedure for multi machine power systems using back-stepping method. The control objective is to drive machine power angle and frequency to the steady-state operation point, and guarantee that the close-loop system is adaptive to the uncertainties of generator damping coefficient and d-axis reactance, and robust to model errors or bounded disturbances.

利用反步法设计了多机电力系统中的非线性鲁棒自适应励磁控制方案，控制目标是调节发电机功角和频率至稳态运行点的极小领域，并使闭环系统对发电机阻尼系数和电抗参数的不确定性具有自适应能力，且对模型误差和外部有界干扰具备鲁棒性，同时保证各控制器是分散化和本地化的。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。