公开(公告)号：US08938454B2

公开(公告)日：2015-01-20

申请号：US13648438

申请日：2012-10-10

Applicant: H. Jonathan Chao ,  Yang Xu

Inventor： H. Jonathan Chao ,  Yang Xu

IPC: G06F7/00 ,  G06F17/30

CPC classification number: G06F17/30985

Abstract: Deterministic Finite Automatons (DFAs) and Nondeterministic Finite Automatons (NFAs) are two typical automatons used in the Network Intrusion Detection System (NIDS). Although they both perform regular expression matching, they have quite different performance and memory usage properties. DFAs provide fast and deterministic matching performance but suffer from the well-known state explosion problem. NFAs are compact, but their matching performance is unpredictable and with no worst case guarantee. A new automaton representation of regular expressions, called Tunable Finite Automaton (TFA), is described. TFAs resolve the DFAs' state explosion problem and the NFAs' unpredictable performance problem. Different from a DFA, which has only one active state, a TFA allows multiple concurrent active states. Thus, the total number of states required by the TFA to track the matching status is much smaller than that required by the DFA. Different from an NFA, a TFA guarantees that the number of concurrent active states is bounded by a bound factor b that can be tuned during the construction of the TFA according to the needs of the application for speed and storage. A TFA can achieve significant reductions in the number of states and memory space.

Abstract translation: 确定性有限自动机（DFA）和非确定性有限自动机（NFAs）是网络入侵检测系统（NIDS）中使用的两种典型自动机。 虽然它们都执行正则表达式匹配，但它们具有非常不同的性能和内存使用属性。 DFA提供快速和确定性的匹配性能，但遭受着名的国家爆炸问题。 NFAs是紧凑的，但它们的匹配性能是不可预测的，没有最坏的情况保证。 描述了称为可调谐有限自动机（TFA）的正则表达式的新自动机表示。 TFAs解决了DFA的状态爆炸问题和NFAs不可预测的性能问题。 与仅具有一个活动状态的DFA不同，TFA允许多个并发活动状态。 因此，TFA跟踪匹配状态所需的状态总数远远小于DFA所要求的状态总数。 与NFA不同，TFA保证并行活动状态的数量受绑定因子b的约束，根据应用速度和存储的需要，可以在构建TFA期间进行调整。 TFA可以显着减少状态和记忆空间的数量。

公开(公告)号：US08830985B2

公开(公告)日：2014-09-09

申请号：US13660545

申请日：2012-10-25

Applicant: Yang Xu ,  Michael Hart ,  Peter Gelbman ,  Herkole Sava

Inventor： Yang Xu ,  Michael Hart ,  Peter Gelbman ,  Herkole Sava

IPC: H04J3/06 ,  H04W56/00

CPC classification number: H04W56/00 ,  H04J11/0023 ,  H04L1/0026 ,  H04L5/0044 ,  H04L5/0062 ,  H04W72/0406 ,  H04W72/082 ,  H04W72/085

Abstract: Systems and methods for detecting and mitigating interference between from a wireless time division duplex (TDD) communications device and a wireless frequency division duplex (FDD) communications device includes processing quality-indicator reports received from the FDD device to determine if the FDD device has experienced interference from the TDD device. Such interference may be mitigated by adjusting a downlink configuration of the FDD base station in communication with the FDD device. To detect and mitigate interference from an FDD device to a TDD device, it is determined if a monitored value of an operational parameter of the FDD device is within a fixed range of a maximum value of the operational parameter, and if so, a specific time interval or frequency of the FDD device is assigned for communication purposes. Similar interference detection and mitigation techniques may also be used for interference scenarios between two TDD systems including TDD devices.

Abstract translation: 用于检测和减轻来自无线时分双工（TDD）通信设备和无线频分双工（FDD）通信设备之间的干扰的系统和方法包括处理从FDD设备接收的质量指标报告，以确定FDD设备是否经历过 来自TDD设备的干扰。 可以通过调整与FDD设备通信的FDD基站的下行链路配置来减轻这种干扰。 为了检测和减轻从FDD设备到TDD设备的干扰，确定FDD设备的操作参数的监视值是否在操作参数的最大值的固定范围内，如果是，则具体时间 FDD设备的间隔或频率被分配用于通信目的。 类似的干扰检测和减轻技术也可以用于包括TDD设备的两个TDD系统之间的干扰场景。

公开(公告)号：US08826985B2

公开(公告)日：2014-09-09

申请号：US12425983

申请日：2009-04-17

Applicant: Yang Xu ,  Bennett M. Richard

Inventor： Yang Xu ,  Bennett M. Richard

IPC: E21B43/26 ,  E21B34/14 ,  E21B33/10

CPC classification number: E21B43/26 ,  E21B33/10 ,  E21B34/14

Abstract: A fracturing operation is done in open hole without annular space isolation. The annular space is spanned by telescoping members that are located behind isolation valves. A given bank of telescoping members can be uncovered and the telescoping members extended to span the annular space and engage the formation in a sealing manner. Pressurized fracturing fluid can be pumped through the telescoped passages and the portion of the desired formation fractured. In a proper formation, cementing is not needed to maintain wellbore integrity. The telescoping members can optionally have screens. Normally, the nature of the formation is such that gravel packing is also not required. A production string can be inserted into the string with the telescoping devices and the formation portions of interest can be produced through the selectively exposed telescoping members.

Abstract translation: 在没有环形空间隔离的开孔中进行压裂作业。 环形空间由位于隔离阀后面的伸缩构件跨越。 一组给定的伸缩构件可以不被覆盖，并且伸缩构件延伸以跨越环形空间并以密封方式接合地层。 加压压裂液可以泵送通过可伸缩通道，并且所需地层的部分断裂。 在适当的形成中，不需要固井来保持井身完整性。 伸缩构件可以可选地具有屏幕。 通常，地层的性质是不需要砾石填料。 生产线可以用伸缩装置插入弦中，并且可以通过选择性地暴露的伸缩构件来产生感兴趣的形成部分。

公开(公告)号：US08723473B2

公开(公告)日：2014-05-13

申请号：US13249921

申请日：2011-09-30

Applicant: Yang Xu ,  Shulin Liang ,  Jianhua Zhang

Inventor： Yang Xu ,  Shulin Liang ,  Jianhua Zhang

IPC: H01M10/44 ,  H01M10/46

CPC classification number: B60L3/0069 ,  B60L3/0046 ,  B60L8/003 ,  B60L11/1812 ,  B60L11/1868 ,  B60L2210/12 ,  B60L2210/14 ,  B60L2240/545 ,  B60L2240/547 ,  B60L2240/549 ,  B60L2250/10 ,  B60L2250/16 ,  H02J7/35 ,  Y02T10/7005 ,  Y02T10/7066 ,  Y02T10/7072 ,  Y02T10/7083 ,  Y02T10/7225 ,  Y02T10/7233 ,  Y02T10/92 ,  Y02T90/127 ,  Y02T90/14

Abstract: A control system of a solar power supply for a vehicle is provided. The control system includes a solar battery pack and a control module. The solar battery is connected to an auxiliary power module, the control module, a DC/DC buck converter via a first switch, and connected to a DC/DC boost converter via a second switch. The DC/DC buck converter is connected to a low-voltage load, a starting battery and the control module. The DC/DC boost converter is connected to a high-voltage load, the control module, a power battery pack via a main contactor.

Abstract translation: 提供一种用于车辆的太阳能供电的控制系统。 控制系统包括太阳能电池组和控制模块。 太阳能电池通过第一开关连接到辅助电源模块，控制模块，DC / DC降压转换器，并通过第二开关连接到DC / DC升压转换器。 DC / DC降压转换器连接到低压负载，起动电池和控制模块。 DC / DC升压转换器通过主接触器连接到高压负载，控制模块和动力电池组。

公开(公告)号：US08697181B2

公开(公告)日：2014-04-15

申请号：US13072416

申请日：2011-03-25

Applicant: Alexandru S. Biris ,  Yang Xu ,  Daoyuan Wang

Inventor： Alexandru S. Biris ,  Yang Xu ,  Daoyuan Wang

IPC: A61N2/02

CPC classification number: A61K41/0047 ,  A61K41/0052 ,  A61K49/0067 ,  A61K49/1836 ,  A61N1/406 ,  B82Y5/00 ,  B82Y30/00 ,  B82Y40/00 ,  H01F1/0054

Abstract: A magnetic oxide-quantum dot nanocomposite and methods of synthesizing it. In one embodiment, the magnetic oxide-quantum dot nanocomposite has at least one magnetic oxide nanoparticle coated with a silica (SiO2) shell and terminated with at least one thiol group (—SH), and at least one CdSe/ZnS quantum dot linked with the at least one SiO2-coated magnetic oxide nanoparticle via the at least one thiol group. In one embodiment, the at least one magnetic oxide nanoparticle comprises at least one iron oxide (Fe3O4) nanoparticle.

Abstract translation: 磁性氧化物 - 量子点纳米复合材料及其合成方法。 在一个实施方案中，磁性氧化物 - 量子点纳米复合材料具有至少一个涂覆有二氧化硅（SiO 2）壳并且被至少一个硫醇基（-SH）封端的磁性氧化物纳米颗粒，并且至少一个CdSe / ZnS量子点与 所述至少一种SiO 2涂覆的磁性氧化物纳米颗粒经由所述至少一个硫醇基团。 在一个实施方案中，所述至少一种氧化物纳米颗粒包含至少一种氧化铁（Fe 3 O 4）纳米颗粒。

公开(公告)号：US20140101155A1

公开(公告)日：2014-04-10

申请号：US13648432

申请日：2012-10-10

Applicant: H. Jonathan CHAO ,  Yang Xu

Inventor： H. Jonathan CHAO ,  Yang Xu

IPC: G06F17/30

CPC classification number: H04L41/16 ,  H04L43/028

Abstract: Deterministic Finite Automatons (DFAs) and Nondeterministic Finite Automatons (NFAs) are two typical automatons used in the Network Intrusion Detection System (NIDS). Although they both perform regular expression matching, they have quite different performance and memory usage properties. DFAs provide fast and deterministic matching performance but suffer from the well-known state explosion problem. NFAs are compact, but their matching performance is unpredictable and with no worst case guarantee. A new automaton representation of regular expressions, called Tunable Finite Automaton (TFA), is described. TFAs resolve the DFAs' state explosion problem and the NFAs' unpredictable performance problem. Different from a DFA, which has only one active state, a TFA allows multiple concurrent active states. Thus, the total number of states required by the TFA to track the matching status is much smaller than that required by the DFA. Different from an NFA, a TFA guarantees that the number of concurrent active states is bounded by a bound factor b that can be tuned during the construction of the TFA according to the needs of the application for speed and storage. A TFA can achieve significant reductions in the number of states and memory space.

Abstract translation: 确定性有限自动机（DFA）和非确定性有限自动机（NFAs）是网络入侵检测系统（NIDS）中使用的两种典型自动机。 虽然它们都执行正则表达式匹配，但它们具有非常不同的性能和内存使用属性。 DFA提供快速和确定性的匹配性能，但遭受着名的国家爆炸问题。 NFAs是紧凑的，但它们的匹配性能是不可预测的，没有最坏的情况保证。 描述了称为可调谐有限自动机（TFA）的正则表达式的新自动机表示。 TFAs解决了DFA的状态爆炸问题和NFAs不可预测的性能问题。 与仅具有一个活动状态的DFA不同，TFA允许多个并发活动状态。 因此，TFA跟踪匹配状态所需的状态总数远远小于DFA所要求的状态总数。 与NFA不同，TFA保证并行活动状态的数量受绑定因子b的约束，根据应用速度和存储的需要，可以在构建TFA期间进行调整。 TFA可以显着减少状态和记忆空间的数量。

公开(公告)号：US08316951B2

公开(公告)日：2012-11-27

申请号：US12566909

申请日：2009-09-25

Applicant: Peter J. Fay ,  Yang Xu

Inventor： Peter J. Fay ,  Yang Xu

IPC: E21B34/06 ,  E21B34/10

CPC classification number: F16L55/1133 ,  E21B23/00 ,  E21B34/108 ,  E21B34/14 ,  Y10T137/87917

Abstract: A tubular actuator includes, a restrictor disposed at a tubular that is engageably receptive to a runnable member run thereagainst as long as pressure remains above a latch pressure, the restrictor configured to allow passage of the runnable member after a delay at pressure equal to or below the latch pressure.

Abstract translation: 管状致动器包括：限制器，其设置在管状处，其可接合地容纳可运行的构件，只要压力保持在闩锁压力以上，则所述限制器被配置为允许可运行构件在压力等于或低于 闩锁压力。

公开(公告)号：US08239796B2

公开(公告)日：2012-08-07

申请号：US12715918

申请日：2010-03-02

Applicant: Kenneth S. Stevens ,  Yang Xu

Inventor： Kenneth S. Stevens ,  Yang Xu

IPC: G06F17/50 ,  G06F9/455

CPC classification number: G06F17/5031 ,  G06F17/504

Abstract: A method for synthesizing relative timing (RT) constraints on an integrated circuit design is disclosed. Initially, multiple trace status tables are received, and each of the trace status tables contains a trace error identified by a formal verification engine that was utilized to perform a relative timing (RT) verification on an integrated circuit design. An error causing signal is then recognized for each of the trace errors. For each of error causing signals, two associating signals are identified, and the two associating signals are then utilized to locate a common point of convergence (POC). The POC is further utilized to locate a common point of divergence (POD), and an RT constraint can be generated based on the identified POC and POD. All the generated RT constraints are applied to constrain the integrated circuit design such that the integrated circuit design is able to pass RT verifications in the future without any timing violations.

Abstract translation: 公开了一种用于在集成电路设计上合成相对定时（RT）约束的方法。 最初，接收到多个跟踪状态表，并且每个跟踪状态表包含用于在集成电路设计上执行相对定时（RT）验证的形式验证引擎识别的跟踪错误。 然后针对每个跟踪错误识别出错信号。 对于每个引起错误的信号，识别出两个关联信号，然后利用两个关联信号来定位公共收敛点（POC）。 进一步利用POC来定位共同的发散点（POD），并且可以基于所识别的POC和POD来产生RT约束。 应用所有生成的RT约束来约束集成电路设计，使得集成电路设计能够在将来通过RT验证而不会有任何时序违规。

公开(公告)号：US20110024697A1

公开(公告)日：2011-02-03

申请号：US12752513

申请日：2010-04-01

Applicant: Alexandru S. Biris ,  Yang Xu ,  Dervishi Enkeleda ,  Li Zhongrui

Inventor： Alexandru S. Biris ,  Yang Xu ,  Dervishi Enkeleda ,  Li Zhongrui

IPC: H01B1/24 ,  D01F9/12 ,  B05D5/12 ,  B82Y99/00 ,  B82Y40/00 ,  B82Y30/00

CPC classification number: B01J8/0015 ,  B01J8/0285 ,  B01J23/44 ,  B01J23/755 ,  B01J23/88 ,  B01J2208/00469 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/162 ,  H05B6/108

Abstract: The present invention in one aspect relates to a method for producing carbon nanotubes. In one embodiment, the method includes the steps of forming a substrate, depositing a loading amount of catalyst including iron and cobalt nanoparticles on the surfaces of the substrate, and heating the catalyst deposited on the substrate in a radio frequency reactor having a flow of a methane carbon source at a predetermined temperature so as to cause the growth of carbon nanotubes on the substrate.

Abstract translation: 本发明一方面涉及一种碳纳米管的制造方法。 在一个实施方案中，该方法包括以下步骤：形成衬底，在衬底的表面上沉积负载量的包含铁和钴纳米颗粒的催化剂，并且在具有流动性的射频反应器中加热沉积在衬底上的催化剂 甲烷碳源在预定温度下引起碳纳米管在基材上的生长。

公开(公告)号：US20100294509A1

公开(公告)日：2010-11-25

申请号：US12469310

申请日：2009-05-20

Applicant: Namhyo Kim ,  Yang Xu ,  Lale Korkmaz

Inventor： Namhyo Kim ,  Yang Xu ,  Lale Korkmaz

IPC: E21B34/12 ,  E21B34/06

CPC classification number: E21B34/10 ,  E21B23/04 ,  E21B2034/005

Abstract: Disclosed herein is a downhole flow-actuated actuator. The actuator includes, a first tubular, a second tubular longitudinally movably disposed within the first tubular and movable in response to fluid flow therethrough, the second tubular having a full bore therethrough, and a movable member movably attached to the second tubular and movable with the second tubular relative to the first tubular. The movable member is movable between a first position and a second position, the movable member is unobstructive of the full bore when in the first position and at least partially occluding of the full bore when in the second position, the movable member is movable from the first position to the second position in response to movement of the second tubular.

Abstract translation: 本文公开了一种井下流动致动致动器。 所述致动器包括第一管状物，第二管状物，其纵向可移动地设置在所述第一管状物内并且响应于流体流过所述第二管状物而可移动，所述第二管状物具有穿过其中的全部孔，以及可移动的构件，其可移动地附接到所述第二管状物， 相对于第一管状物的第二管状体。 可移动构件可在第一位置和第二位置之间移动，当处于第二位置时，可移动构件在处于第一位置时不影响全孔，并且在处于第二位置时至少部分地遮挡全孔，可动构件可从 第一位置响应于第二管的运动而到达第二位置。