Abstract: An instrument is disclosed that is capable of detecting and graphically displaying channel usage and the number of access points operating on each channel of interest. By using a module that counts the number of elapsed clock cycles, the total cumulative duration of detected frames, and the number of channel in-use cycles, the instrument can determine the percentage of time a channel is in use, the percentage of time of IEEE 802.11 usage on a channel, and the percentage of time of non-IEEE 802.11 usage on a channel. Further, channels are scanned for access point activity using a scanning algorithm that interleaves scanning channels at a first duration longer than the beacon interval and scanning channels at a second shorter duration.

Abstract: A method of processing image date representing an image of a scene to generate an estimate of noise present in the image data. The method comprises evaluating a function for different values of the estimate, the function taking as input an estimate of the noise, and determining an estimate of the noise for which the function has an optimum value.

Abstract: A method of processing image data representing an image of a scene to generate an estimate of noise present in the image data. The method comprises evaluating a function for different values of said estimate, said function taking as input an estimate of said noise, and determining an estimate of said noise for which said function has an optimum value.

Abstract: Methods, systems, and media are provided for identifying and clustering queries that are rising in popularity. Resultant clustered queries can be compared to other stored queries using textual and temporal correlations. Fresh indices containing information and results from recently crawled content sources are searched to obtain the most recent query activity. Historical indices are also searched to obtain temporally correlated information and results that match the clustered query stream. A weighted average acceleration of a spike can be calculated to distinguish between a legitimate spike and a non-legitimate spike. Legitimate clusters are combined with other stored clusters and presented as grouped content results to a user output device.

Abstract: Methods, systems, and media are provided for identifying and clustering queries that are rising in popularity. Resultant clustered queries can be compared to other stored queries using textual and temporal correlations. Fresh indices containing information and results from recently crawled content sources are searched to obtain the most recent query activity. Historical indices are also searched to obtain temporally correlated information and results that match the clustered query stream. A weighted average acceleration of a spike can be calculated to distinguish between a legitimate spike and a non-legitimate spike. Legitimate clusters are combined with other stored clusters and presented as grouped content results to a user output device.

Abstract: An instrument is disclosed that is capable of detecting and graphically displaying channel usage and the number of access points operating on each channel of interest. By using a module that counts the number of elapsed clock cycles, the total cumulative duration of detected frames, and the number of channel in-use cycles, the instrument can determine the percentage of time a channel is in use, the percentage of time of IEEE 802.11 usage on a channel, and the percentage of time of non-IEEE 802.11 usage on a channel. Further, channels are scanned for access point activity using a scanning algorithm that interleaves scanning channels at a first duration longer than the beacon interval and scanning channels at a second shorter duration.

Abstract: Method for increasing the yield in glyphosate-resistant legumes, which comprises treating the plants or the seed with a mixture comprising a) azoxystrobin where X, m, Q, A have the meaning given in the description and b) a glyphosate derivative II in a synergistically active amount.

Abstract: Method for increasing the yield in glyphosate-resistant legumes, which comprises treating the plants or the seed with a mixture comprising a) a compound of the formula I where X, m, Q, A have the meaning given in the description and b) a glyphosate derivative II in a synergistically active amount.

Abstract: Compensation for spherical aberration in retroreflectors to improve the retroreflector performance. A retroreflector has at least two concentric spherical layers. A first of the layers is of uniform refractive index n! surrounding a second of the layers of uniform refractive index n2. The refractive indices satisfy the criteria n1>n2. A retroreflector is formed as a sphere having a predetermined refractive index and radius, such that spherical aberration of incident radiation is at least partially compensated for by primary defocus.

Abstract: A method of processing image data representing an image of a scene to generate an estimate of noise present in the image data. The method comprises evaluating a function for different values of said estimate, said function taking as input an estimate of said noise, and determining an estimate of said noise for which said function has an optimum value.

Abstract: A text fixture (1) comprises apparatus (4) for verifying the color and brightness of light emitted from LEDs (5) of a printed circuit board (3). A base (6) of the fixture (1) supports the printed circuit board (3) during testing. A mounting panel (14) locates ends (15) of a plurality of optical fibers (10) adjacent the LEDs (5) on the printed circuit board (3), and ends (21) of ht optical fibers (10) are terminated in a terminating panel (20) adjacent an image sensing panel (11). The image sensing panel (11) comprises an array of individually addressable light and color sensitive pixels (25) onto which light from the optical fibers (10) is incident. An analysing circuit (12) scans the pixels (25) for determining the brightness values and the tristimulus values of the incident light, and a control circuit (9) compares the tristimulus values and brightness values with reference tristimulus and brightness values for verifying the color and brightness of the light emitted by the respective LEDs (5).

Abstract: Method for increasing the yield in glyphosate-resistant legumes, which comprises treating the plants or the seed with a mixture comprising a) a compound of the formula I where X, m, Q, A have the meaning given in the description and b) a glyphosate derivative II in a synergistically active amount.

Abstract: A method of correcting distortions resulting from loss and dispersion in cable fault measurements. A cable is measured in the frequency domain to obtain a reflected response. Fractional sinusoidal components of the reflected response having attenuated amplitude and delayed phase values at points defining the junctures of adjacent equal predetermined lengths are collected and normalized. Then the fractional sinusoidal components of the reflected response are extracted from normalized sum by mathematically calculating the real value at each point, thereby removing all loss and dispersion distortion components.

Abstract: A test fixture (1) comprises apparatus (4) for verifying the colour and brightness of light emitted from LEDs (5) of a printed circuit board (3). A base (6) of the fixture (1) supports the printed circuit board (3) during testing. A mounting panel (14) locates ends (15) of a plurality of optical fibres (10) adjacent the LEDs (5) on the printed circuit board (3), and ends (21) of the optical fibres (10) are terminated in a terminating panel (20) adjacent an image sensing panel (11). The image sensing panel (11) comprises an array of individually addressable light and colour sensitive pixels (25) onto which light from the optical fibres (10) is incident. An analysing circuit (12) scans the pixels (25) for determining the brightness values and the tristimulus values of the incident light, and a control circuit (9) compares the tristimulus values and brightness values with reference tristimulus and brightness values for verifying the colour and brightness of the light emitted by the respective LEDs (5).

Abstract: A method for making an optical fiber fusion joint between two dissimilar single mode optical fibers (10,40) where the fibers have different core sizes and/or different refractive index profiles due to different patterns of dopant. One fiber may be a standard step-index communication fiber with a 9 &mgr;m core diameter and a numerical aperture (NA) of about 0.1, and the second fiber may be a dispersion compensating fiber (DCF) with a multiple layer refractive index profile. The second fiber alternatively may have a smaller core and a higher NA, up to about 0.3. A diffused dopant region, with a gradual longitudinal variation in diffusion, is included adjacent to the splice. The diameter of the communications fiber core increases gradually within the diffusion region as the splice joint is approached along this fiber. The diffusion of the various dopants in the second fiber tend to cause its refractive index profile to converge optically to that of the diffused step index communication fiber.