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    • 82. 发明授权
    • System and method for corpus callosum segmentation in magnetic resonance images
    • 磁共振图像中胼for体分割的系统和方法
    • US07983464B2
    • 2011-07-19
    • US11782828
    • 2007-07-25
    • Qing XuHong ChenLi Zhang
    • Qing XuHong ChenLi Zhang
    • G06K9/00
    • G06K9/6209G06K9/6207G06T7/0012G06T7/12G06T7/149G06T2207/10088G06T2207/20124G06T2207/30016
    • A method and system for segmentation of the corpus callosum in MR brain images is disclosed. The method utilizes an active shape model (ASM) with confidence weighting to iteratively adjust an initial corpus callosum contour to define a boundary of the corpus callosum in an MR image. An ASM is used to determine a displacement value in a perpendicular direction of the corpus callosum contour for each node of the corpus callosum contour. The displacement value for each node is then weighted based on a confidence of that displacement value. The ASM is then fitted to the adjusted contour. These steps are iteratively performed until the contour converges to define the corpus callosum boundary. This boundary can be further refined based on intensity distributions in object and background regions defined by the boundary.
    • 公开了MR脑图像中胼the体分割的方法和系统。 该方法利用具有置信度加权的活动形状模型(ASM)来迭代地调整初始语料库胼los体轮廓,以定义MR图像中胼the体的边界。 ASM用于确定胼the体轮廓的每个节点的胼um体轮廓的垂直方向上的位移值。 然后基于该位移值的置信度对每个节点的位移值加权。 然后将ASM安装到调整后的轮廓上。 迭代地执行这些步骤,直到轮廓收敛以定义胼the体边界。 该边界可以根据由边界定义的对象和背景区域中的强度分布进一步改进。
    • 86. 发明授权
    • Method and apparatus for estimating real-time travel times over a transportation network based on limited real-time data
    • 用于基于有限的实时数据估算运输网络的实时旅行时间的方法和装置
    • US07894980B2
    • 2011-02-22
    • US11052310
    • 2005-02-07
    • Zhen LiuLaura WynterLi Zhang
    • Zhen LiuLaura WynterLi Zhang
    • G08G1/00G08G1/005G08G1/017G08G1/127
    • G08G1/096816G08G1/0104G08G1/096827H04L47/2416H04L47/283
    • The present invention is a method and an apparatus for estimating real-time travel times or traffic loads (e.g., traffic flows or densities) over a transportation network based on limited real-time data. In one embodiment, a method for estimating a travel time over a transportation network comprising at least a first link and a second link includes receiving a data feed associated with a real-time traffic flow over the first link, estimating a first travel time over the first link based at least in part on the data feed, and estimating a second travel time over the second link, also based at least in part on the data feed. The method assumes that a real-time data feed is not available for the second link, and thus estimates the traffic flow over the second link based on the known traffic flow over the first link and other known data, such as historical traffic patterns and physical parameters of the transportation network.
    • 本发明是一种用于基于有限的实时数据在运输网络上估计实时旅行时间或业务负载(例如,业务流量或密度)的方法和装置。 在一个实施例中,用于估计包括至少第一链路和第二链路的运输网络的行进时间的方法包括:接收与第一链路上的实时业务流相关联的数据馈送,估计在第一链路上的第一行进时间 至少部分地基于数据馈送,以及至少部分地基于数据馈送来估计超过第二链路的第二行进时间的第一链路。 该方法假设实时数据馈送不可用于第二链路,并且因此基于第一链路上的已知业务流和其他已知数据(诸如历史流量模式和物理上的)来估计第二链路上的业务流量 交通网络参数。
    • 87. 发明申请
    • METHOD AND SYSTEM FOR DISTRIBUTED COMPUTATION
    • 分布式计算的方法和系统
    • US20110041136A1
    • 2011-02-17
    • US12541285
    • 2009-08-14
    • Daniel John MessierJoseph James SalvoJohn William CarboneCharles Burton TheurerLi Zhang
    • Daniel John MessierJoseph James SalvoJohn William CarboneCharles Burton TheurerLi Zhang
    • G06F9/46
    • G06F9/5066G06F2209/5017Y02D10/22Y02D10/36
    • A system for processing a computational task is presented. The system includes a plurality of nodes operationally coupled to one another via one or more networks. The plurality of nodes includes a base node including a processing subsystem configured to receive the computational task, select a subset of available nodes from the plurality of nodes based upon a present status, processing capability, distance, network throughput, range, resources, features, or combinations thereof of the plurality of nodes, divide the computational task into a plurality of sub-tasks, distribute the plurality of sub-tasks among the subset of available nodes based upon a number of nodes in the subset of available nodes, completion time period allowed for the plurality of sub-tasks, a distribution criteria, level of security required for the completion of the plurality of sub-tasks, resources available with the subset of available nodes, processing capability of the subset of available nodes, range of the subset of available nodes, features in the subset of available nodes, reliability of the subset of available nodes, trust in the subset of available nodes, the current load on the subset of available nodes, domain of the plurality of sub-tasks, or combinations thereof, receive sub-solutions corresponding to the plurality of sub-tasks from the subset of available nodes in a desired time period, and reassemble the sub-solutions to determine a solution corresponding to the computational task.
    • 提出了一种处理计算任务的系统。 该系统包括通过一个或多个网络可操作地彼此耦合的多个节点。 多个节点包括基本节点,其包括被配置为接收计算任务的处理子系统,基于当前状态,处理能力,距离,网络吞吐量,范围,资源,特征,从多个节点中选择可用节点的子集, 或多个节点的组合,将计算任务划分为多个子任务,基于可用节点子集中的节点数量,完成时间周期内的可用节点子集之间分配多个子任务 允许多个子任务,分发标准,完成多个子任务所需的安全级别,可用节点的子集可用的资源,可用节点的子集的处理能力,子集的范围 可用节点的子集中的特征,可用节点的子集的可靠性,可用节点的子集中的信任, 在可用节点的子集上,多个子任务的域或其组合的负载,在期望的时间段内从可用节点的子集接收与多个子任务相对应的子解,并且重新组合子 - 解决方案来确定对应于计算任务的解决方案。
    • 88. 发明授权
    • Use of T4 timestamps to calculate clock offset and skew
    • 使用T4时间戳来计算时钟偏移和偏移
    • US07865760B2
    • 2011-01-04
    • US12245303
    • 2008-10-03
    • Scott M. CarlsonMichel H. T. HackLi Zhang
    • Scott M. CarlsonMichel H. T. HackLi Zhang
    • G06F1/04G06F11/00H04J3/06
    • G06F1/10
    • Disclosed are a method and system for calculating clock offset and skew between two clocks in a computer system. The method comprises the steps of sending data packets from a first processing unit in the computer system to a second processing unit in the computer system, and sending the data packets from the second processing unit to the first processing unit. First, second, third and fourth time stamps are provided to indicate, respectively, when the packets leave the first processing unit, arrive at the second processing unit, leave the second processing unit, and arrive at the first processing unit. The method comprises the further steps of defining a set of backward delay points using the fourth time stamps, and calculating a clock offset between clocks on the first and second processing units and clock skews of said clocks using said set of backward delay points.
    • 公开了一种用于计算计算机系统中两个时钟之间的时钟偏移和偏差的方法和系统。 该方法包括以下步骤:将来自计算机系统中的第一处理单元的数据分组发送到计算机系统中的第二处理单元,并将数据分组从第二处理单元发送到第一处理单元。 提供第一,第二,第三和第四时间戳以分别指示分组离开第一处理单元时到达第二处理单元,离开第二处理单元并到达第一处理单元。 该方法包括以下步骤:使用第四时间戳定义一组后向延迟点;以及使用所述一组后向延迟点,计算第一和第二处理单元上的时钟之间的时钟偏移和所述时钟的时钟偏差。
    • 90. 发明授权
    • Clock filter dispersion
    • 时钟滤波器色散
    • US07822072B2
    • 2010-10-26
    • US11223878
    • 2005-09-09
    • Scott M. CarlsonMichel Henri Théodore HackLi Zhang
    • Scott M. CarlsonMichel Henri Théodore HackLi Zhang
    • H04J3/06G06F1/12G06F1/04
    • H04J3/0667
    • Disclosed are a method and system to estimate the maximum error in the clock offset and skew estimation between two clocks in a computer system. The method comprises the steps of obtaining a first set of data values representing a forward delay between the first and second clocks, and obtaining a second set of data values representing a negative backward delay between the first and second clocks. The method comprises the further step of forming a lower convex hull for said first set of data values, and forming an upper convex hull for said second set of data values. First and second parallel lines are formed between the upper and lower convex hulls, and these parallel lines are used to estimate the worst case error for the offset, skew rate and dispersion of said first and second clocks.
    • 公开了一种用于估计计算机系统中的两个时钟之间的时钟偏移和偏差估计中的最大误差的方法和系统。 该方法包括以下步骤:获得表示第一和第二时钟之间的正向延迟的第一组数据值,并获得表示第一和第二时钟之间的负向后延迟的第二组数据值。 该方法包括为所述第一组数据值形成下凸包的另一步骤,以及为所述第二组数据值形成上凸包。 第一和第二平行线形成在上和下凸包之间,并且这些平行线用于估计所述第一和第二时钟的偏移,偏移速率和色散的最差情况误差。