摘要:
A spiked ball marker connected to a rotating alignment component is provided. The ball marker is designed to prevent rule violations for compromising the golf ball location on the putting surface when marked. The alignment component is adjustable and moves while the connected spiked ball marker is not allowed to move at all. The spikes of the spiked ball marker penetrate the ground to prevent the ball marker from moving as the alignment component is adjusted. The alignment component provides a golfer the option of adjustment by use of a putter in order to gain visual perspective of the putting surface terrain while in the act of adjusting the alignment component for the purpose of enhancing the accuracy of aiming towards a desired trajectory at the golf hole.
摘要:
A spiked ball marker connected to a rotating alignment component is provided. The ball marker is designed to prevent rule violations for compromising the golf ball location on the putting surface when marked. The alignment component is adjustable and moves while the connected spiked ball marker is not allowed to move at all. The spikes of the spiked ball marker penetrate the ground to prevent the ball marker from moving as the alignment component is adjusted. The alignment component provides a golfer the option of adjustment by use of a putter in order to gain visual perspective of the putting surface terrain while in the act of adjusting the alignment component for the purpose of enhancing the accuracy of aiming towards a desired trajectory at the golf hole.
摘要:
The disclosure is directed to a system, method, and computer program for predicting the value of an idea based on crowd input. Users are prompted to vote as to whether variables for an idea (e.g., cost, time to implement, revenue/cost-savings) are greater than or less than proposed values. The proposed values are derived from probability distributions for the variables. Each time a vote is received for a variable, a new probability distribution for the variable is created, wherein parameters of the distribution (e.g., mean, shape parameter) are based on the vote data. The polling continues for each of the variables until a poll termination event occurs. The mean of the final probability distribution for each variable represents the system's estimate (or prediction) of the crowd's consensus value for the variable. Ideas are ranked based on the final consensus value estimates for the ideas.
摘要:
Various embodiments of radiation curable coating compositions are provided. In one embodiment, a radiation curable coating composition includes a (meth)acrylate functional compound and an adhesion promoting (meth)acrylate compound. The radiation curable coating composition can also include a (meth)acrylate functional compound, a poly(meth)acrylate and a reactive diluent. The (meth)acrylate functional compound can be made from the reaction of a multifunctional isocyanate, a polyol and a hydroxyl functional (meth)acrylate in the presence of a catalyst.
摘要:
A modified preamble is used by extended devices that operate at higher rates, MIMO or other extensions relative to strict 802.11a-compliant devices. The extended devices might use multiple antenna techniques (MIMO), where multiple data streams are multiplexed spatially and/or multi-channel techniques, where an extended transmitter transmits using more than one 802.11 a channel at a time. Such extensions to IEEE 802.11 a can exist in extended devices. The modified preamble is usable for signaling, to legacy devices as well as extended devices, to indicate capabilities and to cause legacy devices or extended devices to defer to other devices such that the common communication channel is not subject to unnecessary interference. The modified preamble is also usable for obtaining MIMO channel estimates and/or multi-channel estimates. The modified preamble preferably includes properties that facilitate detection of conventional and/or extended modes (“mode detection”) and provides some level of coexistence with legacy IEEE 802.11 a devices.
摘要:
The present invention includes coating compositions and methods for coating substrates using the coating compositions. In some embodiments of the invention, a coating composition is prepared by a method including the steps of a) preparing a latex emulsion by a method including mixing an ethylenically unsaturated monomer component in a carrier to form a monomer emulsion, and reacting the monomer emulsion with an initiator to form the latex emulsion, b) preparing a hydroxyl functional oil graft copolymer by a method including reacting an epoxidized vegetable oil with a hydroxyl functional material in the presence of an acid catalyst to form a hydroxyl functional oil polyol, and reacting the hydroxyl functional oil polyol with an ethylenically unsaturated monomer component in the presence of an initiator to form the hydroxyl functional oil polyol graft copolymer, and c) blending the latex emulsion and a crosslinker then adding the hydroxyl functional oil graft copolymer to form the coating composition. The coating compositions may exhibit no or minimal blush, no or minimal color pick-up, and commercially acceptable adhesion. Substrates coated with the coating compositions of the invention are also disclosed.
摘要:
The transmitting end of a content distribution system selectively employs a redundancy mechanism to encode video data. In the event that a particular frame contains information upon which the decoding of multiple frames may depend, the transmitting end can apply a redundancy mechanism to redundantly distribute the data of the frame throughout a set of data segments, each of which is separately transmitted via the network to the receiving end. Otherwise, in the event that a particular frame to be transmitted does not contain substantial information upon which the decoding of multiple frames may depend, the loss of some or all of the data of the frame may not appreciably affect the presentation of the video content at the receiving end and thus the transmitting end can forgo application of the redundancy mechanism to such frames so as to avoid unnecessary processing and reduce the overall network bandwidth used.
摘要:
A receiver chain is provided for use in wireless data communication including a plurality of receive antennas and a vector Barker decoder or a CCK decoder. The vector Barker decoder operates on the plurality of received signals, preferably processed through a plurality of channel matched filters. The weightings of the plurality of channels can be done using a slicer variance, a PLL variance or another method.
摘要:
Methods and apparatus for adaptive error correction in networks are described. Some example methods to transmit data in a network include generating a first number of redundant data packets from a data file at a first location, wherein any first subset of the generated data packets is sufficient to reconstruct the data file. The example methods further include obtaining a variable representative of network conditions associated with a network configured to carry the data packets to a second location, and transmitting a second subset of the data packets based on the variable, wherein the number of packets of the second subset is at least as large as the first subset.
摘要:
A soft symbol decoder for use in a multiple input multiple output (MIMO) and OFDM (orthogonal frequency division multiplexing) system. The decoder generates soft symbol values for a digital signal that represents a number of source bits. The source bits are transmitted as symbols in corresponding to points in a signaling constellation. Soft metrics are determined by searching for all possible multi-dimensional symbols that could have been transmitted. The method includes transmitting a sample of the multi-dimensional symbol using K transmit antennas. The multi-dimensional symbol is represent-able as a complex, K-dimensional vector x. Each vector component of vector x represents a signal transmitted with one of the K transmit antennas. After transmission through a communication channel, a sample corresponding to the transmitted sample is received. The received sample is represented by a complex, N-dimensional vector y, where N is the number of receive antennas in the MIMO system. After the sample is received, a soft metric L(bi) is determined for each bit bi encoded by x according to the equation: L ( b i ) = σ - 2 · ( min x j b i = - 1 y - Hx j 2 - min x j b i = + 1 y - Hx j 2 ) , , and xj represents all possible values for x. In addition, a reduced complexity method is used for providing soft metric values in the MIMO system. This exemplary aspect reduces the complexity of the above computations from 2BK to 2B(K-1), where B is the number of bits transmitted per symbol per antenna.
摘要翻译:一种用于多输入多输出(MIMO)和OFDM(正交频分复用)系统的软符号解码器。 解码器产生表示多个源位的数字信号的软符号值。 源比特在对应于信令星座中的点被作为符号发送。 通过搜索可能已经发送的所有可能的多维符号来确定软度量。 该方法包括使用K个发送天线发送多维符号的采样。 多维符号可以表示为复杂的K维向量x。 矢量x的每个矢量分量表示与K个发射天线中的一个发射的信号。 在通过通信信道传输之后,接收对应于发送的样本的样本。 接收的样本由复数N维向量y表示,其中N是MIMO系统中的接收天线的数量。 在接收到样本之后,根据以下等式为由x编码的每个比特bi确定软度量L(bi):L(b i)=&sgr; - 2·(min x jb i = - 1y - Hx j2 - min x jb i = + 1y-Hx j2),xj表示x的所有可能值。 另外,降低复杂度的方法用于在MIMO系统中提供软度量值。 该示例性方面降低了从2BK到2B(K-1)的上述计算的复杂度,其中B是每个天线每符号发送的比特数。