公开(公告)号：US20220130267A1

公开(公告)日：2022-04-28

申请号：US17081686

申请日：2020-10-27

申请人： Andrew Li ,  Katelynn E Wang

发明人： Andrew Li ,  Katelynn E Wang

IPC分类号： G09B5/14 ,  G06F40/20 ,  H04N21/2187 ,  G06F11/30

摘要： A system and method for providing private message monitoring in a virtual class session monitors student private messages using natural language processing. The system is configured to communicatively couple a teacher computer, one or more student computers, and a web server over the Internet. The web server captures a private message between a first student computer and a second student computer, extract message text from the private message, process the extracted message text using natural language processing to identify a message topic, and when the message topic is not a current topic in a virtual class session, transmit a message to the first student computer and the second student computer to stay on topic of the virtual class session.

公开(公告)号：US08806089B2

公开(公告)日：2014-08-12

申请号：US13723380

申请日：2012-12-21

申请人： Andrew Li ,  Michael Lau ,  Asad Khamisy

发明人： Andrew Li ,  Michael Lau ,  Asad Khamisy

IPC分类号： G06F3/00

CPC分类号： H04L49/9057 ,  G06F9/3004 ,  H04L47/52 ,  H04L49/90 ,  H04L49/901 ,  H04L49/9021 ,  H04L49/9047

摘要： A traffic manager includes an execution unit that is responsive to instructions related to queuing of data in memory. The instructions may be provided by a network processor that is programmed to generate such instructions, depending on the data. Examples of such instructions include (1) writing of data units (of fixed size or variable size) without linking to a queue, (2) re-sequencing of the data units relative to one another without moving the data units in memory, and (3) linking the previously-written data units to a queue. The network processor and traffic manager may be implemented in a single chip.

摘要翻译： 交通管理器包括执行单元，其响应于与存储器中的数据排队相关的指令。 指令可以由网络处理器提供，该网络处理器被编程为根据数据生成这样的指令。 这种指令的示例包括（1）不链接到队列的数据单元（固定大小或可变大小）的写入，（2）数据单元相对于彼此的重排序而不移动存储器中的数据单元，以及（ 3）将先前写入的数据单元链接到队列。 网络处理器和流量管理器可以在单个芯片中实现。

公开(公告)号：US06263228B1

公开(公告)日：2001-07-17

申请号：US09141338

申请日：1998-08-27

申请人： Weiguo Zhang ,  David M. Kramer ,  Andrew Li

发明人： Weiguo Zhang ,  David M. Kramer ,  Andrew Li

IPC分类号： A61B505

CPC分类号： G01R33/4828 ,  G01R33/56563

摘要： A method and apparatus for producing water-dominant and fat-dominant MR signal data for use in constructing separate images from single-scan single-point Dixon MRI sequences is disclosed. The effects of field inhomogeneities are removed by quantitating the signal phase by taking the argument of the MR signal multiplied by itself. A region-growing algorithm guided by a polynomial model is used to unwrap the phase which is then used to separately generate water-pixel data and fat-pixel data for producing separate images. The invention can be used for constructing images from both 2-D and 3-D spin-echo and/or field-echo acquisitions.

摘要翻译： 公开了一种用于制造用于构建单扫描单点狄克逊MRI序列的分离图像的水占优势和脂肪占优势的MR信号数据的方法和装置。 通过将MR信号的自变量乘以自身来量化信号相位来消除场不均匀性的影响。 使用由多项式模型引导的区域增长算法用于展开相位，然后用于分开产生用于产生分离图像的水像像素数据和脂肪像素数据。 本发明可用于从2D和3-D自旋回波和/或场回波采集中构建图像。

公开(公告)号：US5864236A

公开(公告)日：1999-01-26

申请号：US675925

申请日：1996-07-05

申请人： Andrew Li

发明人： Andrew Li

IPC分类号： G01R33/3815 ,  A61B5/055 ,  G01R33/38 ,  G01R33/3875 ,  G01V3/00

CPC分类号： G01R33/3806

摘要： An improved MRI magnet structure is created by utilizing a lower pole mounting support with one or more vertically extending yokes. The one or more vertically extending yokes mount an upper pole mounting structure including an upper pole mounting ring and at least one spoke connecting the ring to at least one of the vertically extending structural supports. The average effective spacing of the upper pole mounting structure is greater than the air gap between the upper and lower pole thereby resulting in improved uniformity of the B.sub.o field at the patient imaging volume. In a preferred embodiment, a pie-shaped cryostat encompasses a plurality of radially distributed superconducting electromagnets for generating a more uniform field in the patient imaging volume. The patient imaging field uniformity in some embodiments can be improved by the use of shim coils and/or shim rings associated with either the upper or lower poles to further modify the field within the patient imaging volume.

摘要翻译： 通过利用具有一个或多个垂直延伸的轭的下极安装支撑件来创建改进的MRI磁体结构。 一个或多个垂直延伸的轭架安装上极安装结构，其包括上极安装环和至少一个将环连接到垂直延伸的结构支撑件中的至少一个上的辐条。 上极安装结构的平均有效间距大于上极和下极之间的气隙，从而导致改善患者成像体积上的Bo场的均匀性。 在优选实施例中，饼形低温恒温器包含多个径向分布的超导电磁体，用于在患者成像体积中产生更均匀的场。 通过使用与上极或下极相关联的垫片线圈和/或垫圈可以改善一些实施例中的患者成像场均匀性，以进一步修改患者成像体积内的场。

公开(公告)号：US08370545B2

公开(公告)日：2013-02-05

申请号：US13365433

申请日：2012-02-03

申请人： Andrew Li ,  Michael Lau ,  Asad Khamisy

发明人： Andrew Li ,  Michael Lau ,  Asad Khamisy

IPC分类号： G06F3/00

CPC分类号： H04L49/9057 ,  G06F9/3004 ,  H04L47/52 ,  H04L49/90 ,  H04L49/901 ,  H04L49/9021 ,  H04L49/9047

摘要： A traffic manager includes an execution unit that is responsive to instructions related to queuing of data in memory. The instructions may be provided by a network processor that is programmed to generate such instructions, depending on the data. Examples of such instructions include (1) writing of data units (of fixed size or variable size) without linking to a queue, (2) re-sequencing of the data units relative to one another without moving the data units in memory, and (3) linking the previously-written data units to a queue. The network processor and traffic manager may be implemented in a single chip.

摘要翻译： 交通管理器包括执行单元，其响应于与存储器中的数据排队相关的指令。 指令可以由网络处理器提供，该网络处理器被编程为根据数据生成这样的指令。 这种指令的示例包括（1）不链接到队列的数据单元（固定大小或可变大小）的写入，（2）数据单元相对于彼此的重排序而不移动存储器中的数据单元，以及（ 3）将先前写入的数据单元链接到队列。 网络处理器和流量管理器可以在单个芯片中实现。

公开(公告)号：US20090240850A1

公开(公告)日：2009-09-24

申请号：US12476206

申请日：2009-06-01

申请人： Andrew Li ,  Michael Lau ,  Asad Khamisy

发明人： Andrew Li ,  Michael Lau ,  Asad Khamisy

IPC分类号： G06F5/16

CPC分类号： H04L49/9057 ,  G06F9/3004 ,  H04L47/52 ,  H04L49/90 ,  H04L49/901 ,  H04L49/9021 ,  H04L49/9047

摘要： A traffic manager includes an execution unit that is responsive to instructions related to queuing of data in memory. The instructions may be provided by a network processor that is programmed to generate such instructions, depending on the data. Examples of such instructions include (1) writing of data units (of fixed size or variable size) without linking to a queue, (2) re-sequencing of the data units relative to one another without moving the data units in memory, and (3) linking the previously-written data units to a queue. The network processor and traffic manager may be implemented in a single chip.

摘要翻译： 交通管理器包括执行单元，其响应于与存储器中的数据排队相关的指令。 指令可以由网络处理器提供，该网络处理器被编程为根据数据生成这样的指令。 这种指令的示例包括（1）不链接到队列的数据单元（固定大小或可变大小）的写入，（2）数据单元相对于彼此的重排序而不移动存储器中的数据单元，以及（ 3）将先前写入的数据单元链接到队列。 网络处理器和流量管理器可以在单个芯片中实现。

公开(公告)号：US07558890B1

公开(公告)日：2009-07-07

申请号：US10741132

申请日：2003-12-19

申请人： Andrew Li ,  Michael Lau ,  Asad Khamisy

发明人： Andrew Li ,  Michael Lau ,  Asad Khamisy

IPC分类号： G06F3/00

CPC分类号： H04L49/9057 ,  G06F9/3004 ,  H04L47/52 ,  H04L49/90 ,  H04L49/901 ,  H04L49/9021 ,  H04L49/9047

摘要： A traffic manager includes an execution unit that is responsive to instructions related to queuing of data in memory. The instructions may be provided by a network processor that is programmed to generate such instructions, depending on the data. Examples of such instructions include (1) writing of data units (of fixed size or variable size) without linking to a queue, (2) re-sequencing of the data units relative to one another without moving the data units in memory, and (3) linking the previously-written data units to a queue. The network processor and traffic manager may be implemented in a single chip.

摘要翻译： 交通管理器包括执行单元，其响应于与存储器中的数据排队相关的指令。 指令可以由网络处理器提供，该网络处理器被编程为根据数据生成这样的指令。 这种指令的示例包括（1）不链接到队列的数据单元（固定大小或可变大小）的写入，（2）数据单元相对于彼此的重排序而不移动存储器中的数据单元，以及（ 3）将先前写入的数据单元链接到队列。 网络处理器和流量管理器可以在单个芯片中实现。

公开(公告)号：US06858008B2

公开(公告)日：2005-02-22

申请号：US10080367

申请日：2002-02-20

申请人： Andrew Li ,  Kutay F. Ustuner

发明人： Andrew Li ,  Kutay F. Ustuner

IPC分类号： A61B8/00 ,  G01S7/52 ,  G01S15/89 ,  G03B42/06 ,  H04B11/00

CPC分类号： G01S7/52096 ,  G01S7/52046

摘要： Methods and systems for automatic adjustment of the transmit power are provided. Excess transmit power is determined as a function of the difference between a noise level and the lower end of the dynamic range of the system as configured. Based on the excess transmit power, the transmit power is reduced from the regulated maximum default settings to about a minimum while substantially preserving the original display image. This minimizes the acoustic energy delivered to the transducer and the body, thus reducing transducer heating and satisfying the FDA's ALARA principle.

摘要翻译： 提供了自动调整发射功率的方法和系统。 根据配置的系统的动态范围的噪声水平和下限之间的差异确定过多的发射功率。 基于超量发射功率，发射功率从稳定的最大默认设置减小到大约最小值，同时基本上保留原始显示图像。 这最大限度地减少了传递给换能器和身体的声能，从而减少换能器加热并满足FDA的ALARA原理。

公开(公告)号：US06306775B1

公开(公告)日：2001-10-23

申请号：US09599143

申请日：2000-06-21

申请人： Andrew Li

发明人： Andrew Li

IPC分类号： H01L2100

CPC分类号： H01L21/32134

摘要： The invention includes methods of selectively etching polysilicon relative to at least one of deposited oxide, thermally grown oxide and nitride, and methods of selectively etching polysilicon relative to BPSG. In one implementation, a method of selectively etching polysilicon relative to at least one of deposited oxide, thermally grown oxide and nitride, includes forming a substrate to have a layer comprising polysilicon received over at least one layer comprising at least one of deposited oxide, thermally grown oxide, and nitride. The polysilicon is exposed to an aqueous solution comprising NH4F, an oxidizer, CH3COOH, TMAH, and HF under conditions effective to selectively etch at least a portion of the polysilicon comprising layer relative to an ultimately exposed portion of the at least one of deposited oxide, thermally grown oxide, and nitride. In one implementation, the polysilicon is exposed to an aqueous solution comprising NH4F, an oxidizer, CH3COOH, and TMAF under conditions effective to selectively etch at least a portion of the polysilicon comprising layer relative to an ultimately exposed portion of the at least one of deposited oxide, thermally grown oxide, and nitride.

摘要翻译： 本发明包括相对于沉积的氧化物，热生长的氧化物和氮化物中的至少一种选择性地蚀刻多晶硅的方法，以及相对于BPSG选择性蚀刻多晶硅的方法。 在一个实施方案中，相对于沉积的氧化物，热生长的氧化物和氮化物中的至少一种选择性地蚀刻多晶硅的方法包括形成衬底以使包含多晶硅的层被包含在至少一层上，所述层至少包括沉积氧化物，热 生长的氧化物和氮化物。 在有效选择性地蚀刻包含多晶硅的层的至少一部分相对于沉积的氧化物中的至少一种的最终暴露部分的条件下，将多晶硅暴露于包含NH 4 F，氧化剂，CH 3 COOH，TMAH和HF的水溶液中， 热生长氧化物和氮化物。 在一个实施方案中，多晶硅暴露于包含NH 4 F，氧化剂，CH 3 COOH和TMAF的水溶液中，所述条件有效地相对于所沉积的至少一种沉积物的最终暴露部分选择性地蚀刻多晶硅包含层的至少一部分 氧化物，热生长氧化物和氮化物。

公开(公告)号：US5951873A

公开(公告)日：1999-09-14

申请号：US996973

申请日：1997-12-23

申请人： Yehuda Shalon ,  Danny Meyer ,  Y. Andrew Li

发明人： Yehuda Shalon ,  Danny Meyer ,  Y. Andrew Li

IPC分类号： G01N30/52 ,  G01N30/60 ,  B01D15/08

CPC分类号： G01N30/6021 ,  G01N2030/522

摘要： A chromatographic device comprising a column body having a first end and a closed second end. The device further includes a piston inside the column body, a chromatographic medium, a rod, and a locking mechanism. The chromatographic medium is within the column body and between the piston and the second end. The rod has a longitudinal rod axis and is operatively engageable with the piston for pressing the piston in the column body. The locking mechanism is adapted for locking the rod relative to the column body in a manner to prevent movement of the rod relative to the column body in an outward longitudinal direction away from the piston without preventing movement of the rod relative to the column body in an inward longitudinal direction toward the piston. Preferably, the chromatographic device includes a spring for exerting a constant axial compression against the piston to prevent the formation of voids in the packing medium.

摘要翻译： 一种色谱装置，包括具有第一端和封闭的第二端的柱体。 该装置还包括柱体内的活塞，色谱介质，杆和锁定机构。 色谱介质在柱体内，活塞和第二端之间。 杆具有纵向杆轴线并且可操作地与活塞接合以将活塞压在柱体中。 锁定机构适于以相对于柱体的方式锁定杆，以防止杆相对于柱体在远离活塞的向外纵向方向上的运动，而不会阻止杆相对于柱体的移动 朝向活塞的向内纵向。 优选地，色谱装置包括用于对活塞施加恒定的轴向压缩以防止在包装介质中形成空隙的弹簧。