METHOD FOR DETERMINING HYDRAULIC PARAMETERS AND WATER INFLOW IN EROSION STAGE OF GRAVEL SOIL

    公开(公告)号:US20220307964A1

    公开(公告)日:2022-09-29

    申请号:US17458604

    申请日:2021-08-27

    IPC分类号: G01N15/08 G01V9/00 G01N33/24

    摘要: The invention discloses method for determining hydraulic parameters and water inflow in the erosion stage of gravel soil, comprising: calculate the soil particle content P and the soil porosity n of each grade of particle size a, and draw the PSD curve of each grade of particle size and the soil particle content P of each grade of particle size and the PSD curve cluster of each grade of particle size and the soil particle content P of each grade of particle size in each erosion stage; calculate the equivalent diameter Dh of the soil particle, and calculate the minimum equivalent pore diameter d0 of the soil particle; calculate the critical hydraulic gradient icr of particle erosion at each stage; calculate the permeability coefficient kh; calculate the seepage flow velocity ν and the total seepage flow Q.

    Systems and methods for reducing standby power consumption of switch-mode power converters
    5.
    发明授权
    Systems and methods for reducing standby power consumption of switch-mode power converters 有权
    降低开关电源转换器待机功耗的系统和方法

    公开(公告)号:US08897037B2

    公开(公告)日:2014-11-25

    申请号:US12892580

    申请日:2010-09-28

    摘要: Power conversion system and method. The system includes a first capacitor, a second capacitor, and a plurality of diodes including a first diode, a second diode, a third diode, and a fourth diode. Additionally, the system includes a fifth diode including a first anode and a first cathode and a sixth diode including a second anode and a second cathode. Moreover, the system includes a primary winding, and a secondary winding coupled to the primary winding. The first anode is connected to a first input terminal, and the second anode is connected to a second input terminal. The first input terminal and the second input terminal are configured to receive an input voltage. The secondary winding is configured to generate an output voltage based on at least information associated with the input voltage.

    摘要翻译: 电力转换系统及方法。 该系统包括第一电容器,第二电容器和包括第一二极管,第二二极管,第三二极管和第四二极管的多个二极管。 另外,该系统包括包括第一阳极和第一阴极的第五二极管和包括第二阳极和第二阴极的第六二极管。 此外,该系统包括初级绕组和耦合到初级绕组的次级绕组。 第一阳极连接到第一输入端,第二阳极连接到第二输入端。 第一输入端子和第二输入端子被配置为接收输入电压。 次级绕组被配置为基于至少与输入电压相关联的信息来产生输出电压。

    Use of 9, 10-anthraquinone compounds
    6.
    发明授权
    Use of 9, 10-anthraquinone compounds 有权
    使用9,10-蒽醌化合物

    公开(公告)号:US08895725B2

    公开(公告)日:2014-11-25

    申请号:US13130130

    申请日:2009-11-23

    摘要: Use of 9,10-anthraquinone compounds of formula (I) or pharmaceutical salts thereof or plant extracts containing said compounds in the preparation of anti-HCV medicaments is disclosed, in which Y1 are Y2 are independently hydrogen, hydroxyl or groups of formula (II); and R1, R2, R3, R4, R5 and R6 are independently hydrogen, hydroxyl, carboxyl, cyano group, nitro group, groups of formula (III) or groups selected from those substituted or unsubstituted groups: amino, C1-C6 aliphatic hydrocarbon, C3-C7 cyclic aliphatic hydrocarbon, C1-C6 alkoxy, C2-C7 carbalkoxy, C1-C4 acyloxy, C6-C20 aryl, or 5 to 7 members heterocyclic or benzoheterocyclic thereof; or R5 and R6 form the group of formula (IV). The compounds of present invention are cheap, safe and effective because that they mostly come from traditional Chinese medicines and have better anti-HCV effects and lighter side effects.

    摘要翻译: 公开了在制备抗HCV药物中使用式(I)的9,10-蒽醌化合物或其药用盐或含有所述化合物的植物提取物,其中Y 1为Y 2独立地为氢,羟基或式(II ); 并且R 1,R 2,R 3,R 4,R 5和R 6独立地是氢,羟基,羧基,氰基,硝基,式(III)的基团或选自那些取代或未取代的基团的基团:氨基,C 1 -C 6脂族烃, C 3 -C 7环脂族烃,C 1 -C 6烷氧基,C 2 -C 7烷酰氧基,C 1 -C 4酰氧基,C 6 -C 20芳基或5至7元杂环或苯并杂环; 或R 5和R 6形成式(IV)的基团。 本发明化合物廉价,安全有效,因为它们主要来自中药,抗HCV效果更好,副作用更轻。

    Wavelet coefficient quantization method using human visual model in image compression
    8.
    发明授权
    Wavelet coefficient quantization method using human visual model in image compression 有权
    小波系数量化方法在图像压缩中使用人类视觉模型

    公开(公告)号:US08655092B2

    公开(公告)日:2014-02-18

    申请号:US13500070

    申请日:2010-12-16

    IPC分类号: G06K9/00

    摘要: A wavelet coefficient quantization method using a human visual model in an image compression process is provided, which is particularly suitable for remote sensing image compression. A wavelet-domain visual quantization model is obtained through experiments based on human visual characteristics, so as to reflect the relation between distortion of wavelet coefficient blocks and human visual characteristics. The model includes a luminance component, a masking component and a frequency component, where the luminance component is calculated by low frequency coefficients after the kth level wavelet transform, the masking component is calculated by high frequency coefficients of the second and third levels, and the frequency component is calculated by a statistical method. The method may be used in combination with any mainstream wavelet compression method such as EZW, SPIHT or EBCOT.

    摘要翻译: 提供了一种在图像压缩处理中使用人类视觉模型的小波系数量化方法,特别适用于遥感图像压缩。 通过基于人类视觉特征的实验获得小波域视觉量化模型,以反映小波系数块的失真与人类视觉特征之间的关系。 该模型包括亮度分量,掩蔽分量和频率分量,其中在第k级小波变换之后通过低频系数计算亮度分量,通过第二和第三水平的高频系数来计算掩蔽分量, 频率分量通过统计学方法计算。 该方法可以与任何主流小波压缩方法(如EZW,SPIHT或EBCOT)结合使用。

    METHOD FOR TWO TIME-SCALES VIDEO STREAM TRANSMISSION CONTROL
    9.
    发明申请
    METHOD FOR TWO TIME-SCALES VIDEO STREAM TRANSMISSION CONTROL 有权
    用于两个时间尺度视频流传输控制的方法

    公开(公告)号:US20130263200A1

    公开(公告)日:2013-10-03

    申请号:US13500069

    申请日:2010-12-16

    IPC分类号: H04N21/2662

    摘要: A method for two time-scales video stream transmission control is proposed, which mainly includes the following three steps. Firstly, a model-based long time-scale bandwidth trend extraction step is proposed to calculate a current bandwidth through a Transmission Control Protocol (TCP) throughput model, and predict a trend of network bandwidth by using an Exponential Smooth Model (ESM) according to the calculated current bandwidth. Secondly, a short time-scale bandwidth fluctuation detection step is proposed to divide a network status into three categories and according to different network statuses, additively increase or multiplicatively decrease the estimated bandwidth. Thirdly, a target bit rate adjustment step based on two asymmetrical thresholds is proposed to set an up-threshold and a down-threshold of bandwidth to avoid frequently adjusting a target bit rate of an encoder. The method can satisfy the requirements of TCP-friendliness, real-time, and smoothness for the video transmission.

    摘要翻译: 提出了一种用于两个时标视频流传输控制的方法,主要包括以下三个步骤。 首先,提出了一种基于模型的长时间带宽趋势提取步骤,以通过传输控制协议(TCP)吞吐量模型计算当前带宽,并且通过使用指数平滑模型(ESM)来估计网络带宽的趋势,根据 计算出的当前带宽。 其次,提出了一种短时间规模的带宽波动检测步骤,将网络状态划分为三类,并根据不同的网络状态,相加地增加或乘法地减少估计的带宽。 第三,提出了基于两个不对称阈值的目标比特率调整步骤来设置带宽的上限和下限,以避免频繁地调整编码器的目标比特率。 该方法可以满足视频传输的TCP友好性,实时性和平滑性要求。

    METHOD AND DEVICE FOR SUPPRESSING RESIDUAL ECHOES
    10.
    发明申请
    METHOD AND DEVICE FOR SUPPRESSING RESIDUAL ECHOES 有权
    用于抑制残余电子的方法和装置

    公开(公告)号:US20130151247A1

    公开(公告)日:2013-06-13

    申请号:US13642661

    申请日:2011-10-24

    IPC分类号: G10L21/0216

    摘要: The present invention discloses a method and a device for suppressing residual echoes. The method comprises: performing adaptive filtering on M transmitter signals respectively to obtain M adaptive filtered signals; performing array-filtering on the M−1 adaptive filtered signals other than the first adaptive filtered signal to obtain M−1 array-filter output signals; subtracting each of the M−1 array-filter output signals from the first adaptive filtered signal respectively to obtain M−1 difference signals, performing time-domain/frequency-domain conversion on the M−1 difference signals respectively and selecting one of the frequency-domain signals that has the least energy; performing time-domain/frequency-domain conversion on the first adaptive filtered signal and the Mth adaptive filtered signal and then performing speech probability filtering on the converted first adaptive filtered signal and the converted Mth adaptive filtered signal to obtain one frequency-domain speech probability signal; and multiplying the frequency-domain speech probability signal with the selected signal that has the least energy, and performing frequency-domain/time-domain conversion on the multiplication result to obtain a signal as a transmitter output signal. The technical solutions of the present invention can suppress the residual echoes effectively without impairing near end speech.

    摘要翻译: 本发明公开了一种用于抑制残余回波的方法和装置。 该方法包括:分别对M个发射机信号执行自适应滤波,以获得M个自适应滤波信号; 对除了第一自适应滤波信号之外的M-1个自适应滤波信号执行阵列滤波以获得M-1个阵列滤波器输出信号; 分别从第一自适应滤波信号中减去M-1阵列滤波器输出信号中的每一个以获得M-1个差分信号,分别对M-1个差信号执行时域/频域转换,并选择频率 具有最少能量的域信号; 对第一自适应滤波信号和第M个自适应滤波信号执行时域/频域转换,然后对经转换的第一自适应滤波信号和转换的第M个自适应滤波信号执行语音概率滤波,以获得一个频域语音概率信号 ; 并且将频域语音概率信号与所选择的具有最少能量的信号相乘,并对乘法结果执行频域/时域转换,以获得作为发射机输出信号的信号。 本发明的技术方案可以有效地抑制残留回波,而不损害近端语音。