42results about How to "High variation" patented technology

A bipolar electrogram and a unipolar electrogram are recorded from electrodes of a probe, and differentiated with respect to time. Peaks are identified in the differentiated bipolar electrogram. An activity window is defined that includes bipolar activity about the peaks. An extreme negative value in the differentiated unipolar electrogram within the activity window is reported as a unipolar activation onset. In one aspect, an annotation is selected from candidate minima in the differentiated unipolar electrogram within the activity window by excluding candidates that fail to correlate with activity in the bipolar electrogram.

Methodology for characterizing non-uniformity forces at a tire spindle, such as low and high speed radial force variations and high speed tangential force variations include the steps of measuring radial run out and radial or tangential force variations at high and / or low speeds. From such measurements, the contribution of a predetermined type of stiffness variation (e.g. radial, tangential, extensional, bending) to respective radial and / or tangential force variations can be determined. Signature analysis statistical methods may also be utilized to characterize such tire non-uniform forces for different steps and reference physical angles of a tire construction process. Based on the characterization of such tire non-uniform forces, additional process steps may further correspond to tire grading and / or sorting processes, physical tire modification processes and tire manufacturing processes. Tire correction mechanisms and / or feedback control in a tire manufacturing process preferably yield tires having radial run out and stiffness variation parameters that are out of phase for one or more harmonics, thus yielding a reduction in the non-uniformity forces such as radial and tangential force variations at a tire spindle.

A character reading technique recognizes character strings in grayscale images where characters within such strings have poor contrast, are variable in position or rotation with respect to other characters in the string, or where portions of characters in the string are partially obscured. The method improves classification accuracy by improving the robustness of the underlying correlation operation. Characters are divided into regions before performing correlations. Based upon the relative individual region results, region results are combined into a whole character result. Using the characters that are read, a running checksum is computed and, based upon the checksum result, characters are replaced to produce a valid result.

A character reading technique recognizes character strings in grayscale images where characters within such strings have poor contrast, are variable in position or rotation with respect to other characters in the string, or where portions of characters in the string are partially obscured. The method improves classification accuracy by improving the robustness of the underlying correlation operation. Characters are divided into regions before performing correlations. Based upon the relative individual region results, region results are combined into a whole character result. Using the characters that are read, a running checksum is computed and, based upon the checksum result, characters are replaced to produce a valid result.

Methods and apparatus for synchronizing a first clock of a transmit node and a second clock of receive node in a packet network are provided. Consecutive intervals of time-stamped packets transferred from the transmit node to the receive node are selected. The consecutive intervals have a difference in delay noise within a defined acceptance window. A correction factor is determined for the second clock in accordance with transmit and receive time stamps of transferred time-stamped packets bounding the consecutive intervals. The correction factor is applied to the second clock to synchronize the second clock of the receive node with the first clock of the transmit node.

This invention relates to a method and a system (10) for controlling a wind power plant (20) comprising at least one wind turbine generator (21a-n), the wind power plant being connected to a power network (30) for delivering power to the power network. The method comprises: detecting (201) a frequency of the power network; calculating (202) a variation rate in the detected frequency of the power network; calculating (203) a requested variation of delivered power for the wind power plant based on a value of the inertia of the wind power plant and the calculated frequency variation rate; calculating (204) a requested variation of delivered power for each wind turbine generator of the wind power plant based on the calculated requested variation of delivered power for the wind power plant and a current power level of each wind turbine generator. The resulting calculated re-quested power variation is then used for controlling (205) each wind turbine generator to deliver power to the network.

A measurement unit comprising a light source and a photodetector may be formed in a cavity in a substrate. The light source produces light that impinges a material layer and is reflected back to the photodetector. Through methods such as interferometry and ellipsometry, the thickness of the material layer may be calculated from the light intensity data measured by the photodetector. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

A method for enhancing at least one image within a series of images is provided. The method includes: selecting the series of images; upscaling each image within the series of images; selecting a reference image among the series of images; performing image registration to align series of images with the reference image; evaluating the series of aligned images for a subset of pixel locations that exhibit high cross-frame variation; performing learning processing to substantially reduce noise and exclude motion biases at the subset of pixel locations; performing pixel fusion from the series of aligned and processed images to produce the super-resolution reference image. A computer program product and an imaging system are disclosed.

The present techniques include methods and systems for operating converter to maintain a lifespan of the converter. In some embodiments, the operating frequency of the converter may be increased such that stress may be reduced on the bond wires of the converter. More specifically, embodiments involve calculating the aging parameters for certain operating conditions of the converter operating in a maximum power point tracking (MPPT) mode and determining whether the MPPT operation results in aging the converter to a point which reduces the converter lifespan below a desired lifespan. If the MPPT operation reduces the converter lifespan below the desired lifespan, the frequency of the converter may be increased such that the converter may be controlled to operate at a percentage of MPPT. Thus, in some embodiments, power output may be optimized with respect to maintaining a desired lifespan of the converter.

A PON transmission system and a dynamic band assignment system to be employed in the same which permits high speed band variation, to effectively use up band in PDS period, and to adapt to variation of traffic type. The PON transmission system includes a plurality of subscriber unit including optical network unit processing portions for terminating an optical communication network and a station unit including optical line terminal processing portion terminating the optical communication network. The system also includes means for monitoring increasing and decreasing of idle cells, means for recognizing accumulation of cell in the optical network unit processing portion depending upon the result of monitoring, and means for individually handling band process in the optical communication network according to necessary or unnecessary of band restriction depending upon traffic type.

A method for processing spherical video data is described including a data processor providing spherical video data in the form of projected video frames to an input of an encoder process, a projected video frame including one or more pixel regions, the one or more pixel regions representing pixels of spherical video data projected onto one or more 2D projection surfaces of a projection model, preferably an equirectangular or a 3D polyhedron projection model, for projecting spherical video data onto a rectangular 2D surface of a video frame; wherein the providing of spherical video data may comprise: generating a set of modified projected video frames on the basis of a projected video frame, the generating including applying different shift and / or rotation operations to pixels, preferably one or more pixel regions, of the selected projected video frame; applying an image analysis algorithm to the modified projected video frames, the image analysis algorithm determining an image analysis parameter for a least part of the modified projected video frames, the image analysis parameter being indicative for the encoding efficiency and / or image quality; and, selecting a modified projected video frame from the set of modified projected video frames, the selected modified projected video frame being associated with an image analysis parameter indicative of the best encoding efficiency and / or image quality.

According to the present invention a received Direct Sequence Code Division Multi-Access (DS-CDMA) signal is differentially decoded at the chip level. A number of signaling schemes can be used in the invention including (1) an ON / OFF signaling scheme in which a pseudo noise number (PN) code is sent only in response to one data bit value, and no signal is sent in response to the other bit value; (2) a Two Code signaling scheme in which bit values of 1 triggers a first PN code to transmitted, and a bit value of 0 triggers a second PN code to be transmitted; and (3) an M-ary signaling method in which a plurality of data bit patterns respectively, trigger a plurality of PN codes to be transmitted. After differential decoding the received signal is despread using one or more PN codes, that can be vector sums of two or more PN codes.

The invention discloses a manufacturing method of slider. The slider comprises an incline portion (6) connecting a read / write portion (24) disposed with a convex configuration on an air bearing surface opposite to a recording medium, and a concave portion (26) adjacent to an end thereof where airflow flows in. The incline portion (6) includes a first incline portion (61) with a substantially linear shape connected with a surface of the read / write portion (24) and a second incline portion (62) with substantially linear shape connected with the concave portion (26). A first incline angle θ1 of the concave portion (26) with respect to the first incline portion (61) is larger than a second incline angle θ 2 of the concave portion (26) with respect to the second incline portion (62).

For acquiring data of dynamic physical processes via a radio link, a transponder antenna (17) is excited by an electromagnetic exciting wave at the resonance frequency of the transponder antenna (17), and a back-scattered electromagnetic sensor wave which is modulated by a sensor (16) having an electrical impedance depending on the data to be acquired is received and analyzed. The sensor (16) is directly connected to the transponder antenna (17) such that the sensor changes the electrical impedance of the transponder antenna (17) with every variation of the data to be acquired. The electromagnetic wave which is back-scattered by the transponder antenna (17) is received as the sensor wave at the same time as the transponder antenna (17) is excited by the exciting wave.

A method for feeding electrical power, by a one wind power installation, a power plant or a generation plant, into an electrical supply grid is provided. The grid has a grid voltage having a grid frequency at a grid connection point. In the method a reference system having a reference frequency, a reference phasor having a reference angle, and a reference amplitude of an output voltage are specified. The reference angle revolves at the reference frequency and the reference frequency substantially corresponds to the grid frequency. A phase angle between the output voltage and the grid voltage is specified and an infeed angle is determined. The output voltage is generated having a voltage amplitude depending on the reference amplitude, a frequency depending on the reference frequency and the infeed angle. Tracking of the behavior of the grid voltage is delayed by the reference system.

The present invention is to provide a charge controlling agent and negatively chargeable toner that do not contain any toxic metal, are essentially free from the risk of evoking ignition or explosion, and can exhibit a high charge amount and rapid initial increase in charging. The charge controlling agent is a mono azo iron complex compound represented by Formula (1): wherein J represents H, alkali metal, ammonium, or alkyl ammonium, or two or more of those elements in combination.

The present invention concerns a method of modifying the surface of a cellulosic material, wherein a modifying compound is attached to the cellulosic material through a linker, which linker is a conjugate that has been activated by functionalization prior to adsorption to form an activated conjugate, and wherein the entire method is carried out in aqueous media, as well as an intermediate product suitable for attaching to a modifying compound, the intermediate product comprising said functionalized conjugate linker that has been adsorbed to a cellulosic material.

The subject invention provides methods and kits for detecting increased bone resorption in patients. These methods and kits use chondroitin sulfate, a glycosaminoglycan, as a marker for bone resorption. Levels of chondroitin sulfate are detected in samples of urine or serum taken from patients. Measurements of chondroitin sulfate levels are made by methods such as fluorophore-assisted carbohydrate electrophoresis (FACE). Knowledge of increased bone resorption rates is useful in diagnosis of bone disorders such as osteoporosis.

Methods and apparatus for synchronizing a first clock of a transmit node and a second clock of receive node in a packet network are provided. Consecutive intervals of time-stamped packets transferred from the transmit node to the receive node are selected. The consecutive intervals have a difference in delay noise within a defined acceptance window. A correction factor is determined for the second clock in accordance with transmit and receive time stamps of transferred time-stamped packets bounding the consecutive intervals. The correction factor is applied to the second clock to synchronize the second clock of the receive node with the first clock of the transmit node.

An apparatus generates virtually pure hydrogen for fuel cells, and includes a device for reforming starting substances having at least one hydrocarbon-containing compound and water. Furthermore, the apparatus has catalytic agents for producing a water gas shift reaction in the reformate gas stream generated by the reforming device. Moreover, the apparatus includes a device for separating hydrogen out of the reformate gas stream using membranes which are selectively permeable to hydrogen. The hydrogen-separating device includes a proportion of the catalytic agents for producing the water gas shift reaction. A device for exchanging thermal energy between the reformate gas stream and a further stream of medium is arranged downstream, as seen in the direction of flow, of the reforming device. The device for exchanging thermal energy includes a further proportion of the catalytic agents for producing the water gas shift reaction.

The invention discloses a manufacturing method of slider. The slider comprises an incline portion (6) connecting a read / write portion (24) disposed with a convex configuration on an air bearing surface opposite to a recording medium, and a concave portion (26) adjacent to an end thereof where airflow flows in. The incline portion (6) includes a first incline portion (61) with a substantially linear shape connected with a surface of the read / write portion (24) and a second incline portion (62) with substantially linear shape connected with the concave portion (26). A first incline angle θ1 of the concave portion (26) with respect to the first incline portion (61) is larger than a second incline angle θ2 of the concave portion (26) with respect to the second incline portion (62).

To obtain a mask blank capable of suppressing build-ups after removing a resist film on a peripheral edge of a substrate and free of resist residues, even if using any kind of resist. In an unnecessary film removing step of a mask blank manufacturing steps, for removing the unnecessary resist film from a substrate 10 formed with a resist film 13 on a prescribed light-shielding film 12, the surface of the substrate on the side formed with the resist film 13 is covered with a cover member 30. First, while the substrate 10 is rotated with a prescribed rotation speed R1, the unnecessary resist film is dissolved by a chemical liquid 50. Next, while the substrate 10 is rotated with a prescribed rotation speed R2, the dissolved unnecessary resist film is removed. Further, while the substrate 10 is rotated with a prescribed rotation speed R3, the area from which the resist is removed is dried. In such a case, R1, R2, and R3 are expressed by (I) R1=100 to 500 rpm, (II) R2≧300 rpm, (III) R1<R2≦R3.