公开(公告)号：US20060275138A1

公开(公告)日：2006-12-07

申请号：US11144100

申请日：2005-06-03

申请人： Ping Sheng ,  Ning Wang ,  Jianying Miao ,  Zhiyu Yang ,  Shihe Yang ,  Xinyi Zhang

发明人： Ping Sheng ,  Ning Wang ,  Jianying Miao ,  Zhiyu Yang ,  Shihe Yang ,  Xinyi Zhang

IPC分类号： F04B37/02

CPC分类号： F04B19/006 ,  F04B17/00

摘要： A technique has been developed to fabricate micro- or nanopumps based on porous alumina thin films. The main body of the nanopump consists of a porous alumina thin film (containing nano-sized channels of about 40-300 nm in diameter) with conductive surfaces (e.g. Au coating layers) on both sides of the film. Through the fabrication of nanochannels in (the alumina films) and the subsequent annealing and surface activation processes, high-efficiency micro- or nanopumps can be made. The nanofluidic flow through the nanochannels of the alumina thin films is driven by an electric field with no moving parts. The flow rate (up to 50 millilitres/(min·cm2)) of water through the alumina thin film can be continuously tuned through the intensity of the electric field, i.e., the DC electric potential applied across the nanochannels.

摘要翻译： 已经开发了一种基于多孔氧化铝薄膜制造微米或纳米囊的技术。 纳米孔的主体由多孔氧化铝薄膜（包含直径约40-300nm的纳米尺寸的通道）和薄膜两侧的导电表面（例如Au涂层）组成。 通过（氧化铝膜）中的纳米通道的制造和随后的退火和表面活化过程，可以制成高效率的微米或者纳米粉。 通过氧化铝薄膜的纳米通道的纳米流体流动由没有移动部件的电场驱动。 通过氧化铝薄膜的水的流速（高达50毫升/（分钟/秒））可以通过电场的强度，即跨越施加的直流电势， 纳米通道。

公开(公告)号：US09628499B1

公开(公告)日：2017-04-18

申请号：US13569688

申请日：2012-08-08

申请人： Kevin Yu ,  Xinyi Zhang

发明人： Kevin Yu ,  Xinyi Zhang

IPC分类号： H04L29/06 ,  G06F21/56 ,  G06F21/31 ,  G06F21/55

CPC分类号： H04L63/1425 ,  G06F21/316 ,  G06F21/552 ,  H04L41/00 ,  H04L63/1416

摘要： Systems and methods are described herein for detecting an anomaly in a discrete signal, where samples in the signal correspond to amounts of data flow in a network within a time interval. The discrete signal is received, and a sequence of likelihoods corresponding to the sample values in the signal is generated. The likelihoods are based at least in part on a historical probability distribution of previously received sample values, and a likelihood is a probability of occurrence of a corresponding sample value in the signal. Likelihood change points are identified in the likelihood sequence, and the discrete signal is segmented into a plurality of segments at samples corresponding to the identified change points. A segment is identified as an anomaly based on a comparison between a statistic of the segment and a statistic of the historical probability distribution.

公开(公告)号：US08806313B1

公开(公告)日：2014-08-12

申请号：US13480084

申请日：2012-05-24

申请人： Kevin Yu ,  Yu Xie ,  Xinyi Zhang

发明人： Kevin Yu ,  Yu Xie ,  Xinyi Zhang

IPC分类号： G06F11/00

CPC分类号： G06F11/076 ,  G06F11/0709 ,  H04L43/02

摘要： Systems and methods are disclosed herein for identifying an anomaly in a signal, where samples in the signal correspond to an amount of data flow in a network within a time interval, and an anomaly corresponds to at least one sample in the discrete signal having a likelihood value below a likelihood threshold. A historical probability distribution of the discrete signal is generated based on previously received samples. For each sample in a plurality of samples in the discrete signal, a likelihood is computed based at least in part on the historical probability distribution. A likelihood threshold is selected, and a set of consecutive samples is identified as an anomaly when each sample in the set has a computed likelihood below the likelihood threshold.

摘要翻译： 本文公开了用于识别信号中的异常的系统和方法，其中信号中的采样对应于在时间间隔内的网络中的数据流量，并且异常对应于具有似然性的离散信号中的至少一个采样 值低于似然阈值。 基于先前接收的样本生成离散信号的历史概率分布。 对于离散信号中的多个样本中的每个样本，至少部分地基于历史概率分布来计算似然性。 选择似然阈值，并且当集合中的每个样本具有低于似然阈值的计算似然率时，将一组连续样本识别为异常。

公开(公告)号：US09471544B1

公开(公告)日：2016-10-18

申请号：US13480042

申请日：2012-05-24

申请人： Kevin Yu ,  Xinyi Zhang

发明人： Kevin Yu ,  Xinyi Zhang

IPC分类号： G06F17/18

CPC分类号： G06F17/18 ,  G06K9/0053

摘要： Systems and methods are disclosed herein for detecting an anomaly in a discrete signal, where a long-term trend of the discrete signal is identified. Samples in the signal correspond to a number of data packets arriving at a location in a network within a time interval. The long-term trend is subtracted from the discrete signal to obtain a detrended signal. A cyclic pattern is identified in the detrended signal and is subtracted from the detrended signal to obtain a residual signal. Anomaly detection is performed on the residual signal.

摘要翻译： 本文公开了用于检测离散信号中的异常的系统和方法，其中识别离散信号的长期趋势。 信号中的采样对应于在时间间隔内到达网络中某个位置的数据分组数。 从离散信号中减去长期趋势，以获得去趋势信号。 在去激励信号中识别循环模式，并从去激励信号中减去以获得残留信号。 对残差信号执行异常检测。

公开(公告)号：US08868993B1

公开(公告)日：2014-10-21

申请号：US13446945

申请日：2012-04-13

申请人： Kevin Yu ,  Xinyi Zhang

发明人： Kevin Yu ,  Xinyi Zhang

IPC分类号： G06F11/00 ,  H04L1/00

CPC分类号： H04L1/0045

摘要： Systems and methods are provided for estimating missing samples in a signal. A plurality of samples in the signal is received, and a respective sample corresponds to a respective sample location in a plurality of sample locations. A subset of sample locations representing missing samples in the signal is identified, and a first and a second threshold are determined. Each threshold is an integer number of samples, and the second threshold is greater than the first threshold. A first set of consecutive sample locations from the identified subset of sample locations is formed, and the missing samples in the first set of consecutive sample locations are replaced based on a comparison between a number of locations in the first set of consecutive locations, the first threshold, and the second thresholds.

摘要翻译： 提供了系统和方法来估计信号中的丢失样本。 接收信号中的多个样本，并且相应样本对应于多个样本位置中的相应样本位置。 识别表示信号中缺失样本的样本位置的子集，并且确定第一和第二阈值。 每个阈值是整数个采样，第二个阈值大于第一个阈值。 形成来自所识别的采样位置子集的第一组连续采样位置，并且基于第一组连续位置中的多个位置之间的比较来替换第一组连续采样位置中的丢失样本，第一组 阈值和第二个阈值。

公开(公告)号：US07540717B2

公开(公告)日：2009-06-02

申请号：US11144100

申请日：2005-06-03

申请人： Ping Sheng ,  Ning Wang ,  Jianying Miao ,  Zhiyu Yang ,  Shihe Yang ,  Xinyi Zhang

发明人： Ping Sheng ,  Ning Wang ,  Jianying Miao ,  Zhiyu Yang ,  Shihe Yang ,  Xinyi Zhang

IPC分类号： F04B37/02 ,  H01L21/20 ,  C21C1/06

CPC分类号： F04B19/006 ,  F04B17/00

摘要： A technique has been developed to fabricate micro- or nanopumps based on porous alumina thin films. The main body of the nanopump consists of a porous alumina thin film (containing nano-sized channels of about 40-300 nm in diameter) with conductive surfaces (e.g. Au coating layers) on both sides of the film. Through the fabrication of nanochannels in (the alumina films) and the subsequent annealing and surface activation processes, high-efficiency micro- or nanopumps can be made. The nanofluidic flow through the nanochannels of the alumina thin films is driven by an electric field with no moving parts. The flow rate (up to 50 millilitres/(min·cm2)) of water through the alumina thin film can be continuously tuned through the intensity of the electric field, i.e., the DC electric potential applied across the nanochannels.

摘要翻译： 已经开发了一种基于多孔氧化铝薄膜制造微米或纳米囊的技术。 纳米孔的主体由多孔氧化铝薄膜（包含直径约40-300nm的纳米尺寸的通道）和薄膜两侧的导电表面（例如Au涂层）组成。 通过（氧化铝膜）中的纳米通道的制造和随后的退火和表面活化过程，可以制成高效率的微米或者纳米粉。 通过氧化铝薄膜的纳米通道的纳米流体流动由没有移动部件的电场驱动。 可以通过电场的强度，即施加在纳米通道上的直流电势来连续地调节通过氧化铝薄膜的水的流速（高达50毫升/（分钟/厘米2））。