618 results about "Rate ratio" patented technology

A method of etching silicon-containing material is described and includes a SiConi™ etch having a greater or lesser flow ratio of hydrogen compared to fluorine than that found in the prior art. Modifying the flow rate ratios in this way has been found to reduce roughness of the post-etch surface and to reduce the difference in etch-rate between densely and sparsely patterned areas. Alternative means of reducing post-etch surface roughness include pulsing the flows of the precursors and / or the plasma power, maintaining a relatively high substrate temperature and performing the SiConi™ in multiple steps. Each of these approaches, either alone or in combination, serve to reduce the roughness of the etched surface by limiting solid residue grain size.

A method and system for scaling navigation path weights among online content sources. A method may include determining a first probability of users traversing a first navigation path from a first to a second online content source, dependent upon a ratio of traversals of the first navigation path and traversals of all navigation paths to the second online content source. The method may also include determining a second probability of users traversing navigation paths from the first online content source to any of the online content sources, dependent upon a ratio of the plurality of online content sources to which navigation paths from the first online content source exist and a total number of the plurality of online content sources. The method may further include generating from the probabilities a scaling factor indicative of a strength of the first navigation path relative to other navigation paths among the online content sources.

A system, method and computer program product capable of determining data completeness associated with an analysis based on a data model at the same time that the data in the data model is being analyzed. A root node may be determined, and all paths from the root node discovered. Each path is decomposed into steps, and a ratio is calculated for each step. The ratios may be multiplied for each path, and the aggregate of the paths may determine a measure of the data completeness corresponding to the analysis and return the results of the analysis and the measure of data completeness at the same time.

A data transmission device 10 serving as a traffic distribution control device is a device which, in order to distribute traffic across a plurality of physical ports composing a logical port for link aggregation, uses a hash function to calculate a hash value from a destination address and a source address of a receive packet, and determines a destination physical port. The traffic distribution control device includes a measuring unit 13 that measures an output flow rate of a packet outputted from each of the plurality of physical ports; a calculating unit 14 that calculates a flow rate ratio between the plurality of physical ports with respect to the measured output flow rates; and a first control unit 12 that feeds the calculated flow rate ratio back to a bandwidth distribution ratio between the plurality of physical ports to change numerical allocation of hash values for determining the destination physical port.

A network monitoring system (10) for monitoring a network along which network traffic flows in a form of packets. The system comprises circuitry (36, 42) for receiving a packet communicated along the network and for determining whether the received packet satisfies a set of conditions. The system further comprises circuitry (36 / 30, 46), responsive to a determination that the received packet satisfies the set, for determining a measure, wherein the measure is determined over a defined time interval and comprises a ratio of packet arrival variance and a mean of packets arriving during the time interval and for comparing the measure to a threshold. Lastly, the system comprises circuitry (36, 52), responsive to the measure exceeding the threshold, for adjusting network resources.

Some event ordering requirements can be determined based on continuous event processing queries. Other event ordering requirements can be determined based on distribution flow types being used to distribute events from event streams to node executing the queries. Events from event streams can be ordered according to ordering semantics that are based on a combination of all of these event ordering requirements. Additionally, virtual computing nodes can be associated with constraints, and computing processors can be associated with capabilities. Virtual computing nodes for processing event streams can be assigned to execute on various computing processors based on both these constraints and capabilities. Additionally, for each of several events in an event stream, a ratio between a total latency and a communication latency can be for determined. Based on an average of these ratios, a quantity of reducing nodes that will be involved in a map-reduce operation can be selected.

This invention provides methods for determining drug specificity, therapeutic index and effective doses for individual patients. According to the methods of the invention, graded levels of drug are applied to a biological sample or a patient. A plurality of cellular constituents are measured to determine the activity of the drug on a target pathway and at least one off-target pathway. A drug specificity is determined by comparing the target and off target activities of the drug. A therapeutic concentration (or dose) is defined as a concentration (or dose) of the drug that induces certain response in the target pathway. A toxic concentration (or dose) is defined as a concentration (or dose) of the drug that induces certain response in the off target pathway. Therapeutic index is the ratio of the toxic concentration over therapeutic concentration. Methods are also provided to determine an effective dose of a drug for a patient by measuring the activity of the drug on the particular patient.

Embodiments of this invention provide methods for detecting a denial of service attack (DoS) and isolating traffic that relates to the attack. The method may begin by collecting network traffic data by observing individual packets carried over the network. The data may then be compiled into a time series comprising network traffic data relating successive time-intervals. A difference value based upon the entry in the time series for a large time-window and for a small time-window. A deviation score may then be determined by calculating the ratio of the difference values. The deviation score may indicate whether an attack occurred. In an embodiment of the invention, an attack is deemed to occur if the deviation score is between 0.6 and 1.4.

The present invention provides methods for water conservation with irrigation controllers based upon the ambient temperature and extraterrestrial radiation of a particular geographical area. It receives a preliminary irrigation schedule from the operator and computes a water budget ratio by comparing current local geo-environmental data with stored local geo-environmental data, then modifying the preliminary irrigation schedule based upon that ratio. The present invention utilizes fewer variables, is less complex, and is much easier to install and maintain than the current evapotranspiration-based controllers.

A device for detecting the position of a human finger or other object on a touch-sensitive scrolling pad. Dual independent oscillators may be used to generate two pulse trains at frequencies dependent upon the capacitance of two conductors resulting from the position of the finger on the conductors. The pulses from each oscillator may be counted over a time interval. A ratio-metric measurement may be taken by calculating the ratio of the two counts, and a sum may also be calculated. The ratio of the two counts relates to finger position on the device, and their sum relates to finger pressure upon the device.

An apparatus comprising a user interface configured to generate an electrical signal to begin a carbohydrate ratio test when prompted by a user, an input configured to receive sampled blood glucose data of a patient that is obtained during a specified time duration (including a time duration after delivery of an initial carbohydrate insulin bolus), and a controller in electrical communication with the input and the user interface. The controller includes a carbohydrate ratio module configured to establish a blood glucose baseline from a measure of an initial blood glucose level of the patient, and determine a carbohydrate ratio according to a difference between a blood glucose level of the patient at the end of the specified time duration and the blood glucose baseline. Other systems and methods are disclosed.

Methods and apparatus are provided for determining a minimum distribution rate and an investment allocation among individual investments of different types, including income generating investments that may be counter-balanced by principal protection investments, according to predefined ratios, determining a distribution amount based upon a performance level of individual investments and the minimum distribution rate, and determining at least a portion of individual investments to liquidate to fund the distribution amount. The minimum distribution rate is greater than a predefined percentage of a current value of the investment per year and is maintained at a level at least equal to a highest level of all prior years. The present invention further provides distribution types that allow selection of a distribution method that best suits an investor's requirements. The distribution type selection provides methods for determining the amount of a distribution for a given period and how the distribution is to be funded.

A dynamic load balancing method allowing a transaction processing load is balanced among computers by using estimated elongation rates is disclosed. In a system composed of a plurality of computers for processing transaction processing requests originating from a plurality of terminals, elongation rates of processing time for respective ones of the computers are estimated, where an elongation rate is a ratio of a processing time required for processing a transaction to a net processing time which is a sum of CPU time and an input / output time for processing the transaction. After calculating load indexes of respective ones of the computers based on the estimated elongation rates, a destination computer is selected from the computers based on the load indexes, wherein the destination computer having a minimum one among the load indexes.

Automated image quality assessment methods, which include locating a region of interest, region assessment, contrast assessment, blur assessment, and contaminant detection, on video data and high-resolution imagery. Where the blur assessment is performed without a reference image by dividing the region into non-overlapping block, measuring the wavenumber frequency of the blocks and calculating the ratio of the low frequency to high frequency areas.

A production plan is created so as to minimize risk of demand variations. Forecasted values of amounts of requests are entered for each different item of products, markets, dates, past accuracy of demand forecasts, and order achievements at the time when the plan is created. Scenario information is created in which assumable amounts of request for each different item of the products, markets, and dates and probabilities at which the amounts of requests agree with actual amounts of requests are defined. Management indexes are found from the amount of stockout and amount of stock calculated in each different scenario, based on the scenario information, target values of the management indexes, and information on strongpoints. An amount of production that maximizes the achievement ratios of the management ratios to their targets within the ranges of supplied materials and within the range of the production capacity is calculated by an optimization algorithm.

A computer virus scanning system is described in which during the scanning operation a measurement value indicative of the amount of data processing performed is calculated and this measurement value used to trigger breaks in the virus scanning operation. The triggered breaks can be used to perform a determination as to whether or not the virus scanning operations should be early terminated. One possibility is to measure the total size of the data processed during the virus scanning operation and calculate a ratio of this compared to the size of the computer file being virus scanned. If this calculated ratio exceeds a predetermined threshold, then virus scanning may be terminated. Another possibility is to associate a complexity value with each of a plurality of tests applied in the virus scanning operation. A total for these complexity values may be used to trigger the breaks and also to trigger early termination upon exceeding of respective threshold levels.

A system and method is provided for variable bit rate encoding using a complexity ratio. Quantization parameter is calculated using a complexity ratio, which is equal to a local complexity divided by a global complexity. Complex pictures are allocated a larger bit budget relative to simple pictures. With the larger bit budget the quality of complex pictures can be maintained while reducing the overall size of the encoded video stream.

A device for detecting the position of a human finger or other object on a touch-sensitive scrolling pad. Dual independent oscillators may be used to generate two pulse trains at frequencies dependent upon the capacitance of two conductors resulting from the position of the finger on the conductors. The pulses from each oscillator may be counted over a time interval. A ratio-metric measurement may be taken by calculating the ratio of the two counts, and a sum may also be calculated. The ratio of the two counts relates to finger position on the device, and their sum relates to finger pressure upon the device.

The present invention is directed to a method and system for identifying, quantifying and presenting to a user constraints in an automated manufacturing or processing facility. A data processing system continuously receives basic status signals and state signals from automation equipment in the facility and evaluates and processes these signals to derive a throughput capability measure (a measure of constraint) of each given manufacturing workstation in the process. The throughput capability measure is expressed as a ratio of an ideal cycle time to an accumulated overcycled time. The accumulated overcycled time includes only delays and excludes any speed-up of a workstation. A constraint is identified as the workstation that has the lowest throughput capability measure as compared with all other workstations in a production line. Preferably, throughput capability measures for all workstations are presented to users graphically. Further drill-down can be provided for obtaining more detailed information about the constraint and capacity loss as well as entering information relevant to the constraint, such as a stoppage or slow-down.

A person's step length and rate may be measured, for example, through sensors that collect spatial and temporal gait parameter data. The measurements are then used to determine the rate of a rhythmic auditory cue to improve the person's gait. For example, a system links sensors to detect step rate and length to an audio cue provided to headphones, while providing the appropriate algorithms to accomplish real time adjustments to the audio cues as needed to better help change the person's step length vs. step rate ratio in a desired direction depending on therapeutic or performance goals.

The invention is to use the ability of a switching fabric to set a congestion indicator bit in a segment if any queue through which the segment passes is filled above a lower threshold. The output linecard monitors the field of the congestion indicator bit as it receives segments from the switching fabric. The output linecard periodically calculates the ratio of segments having the congestion bit set to all segments routed to a particular port. The periodically calculated ratio is used as an input parameter to a Random Early Detection (RED) algorithm. The RED algorithm selects a packet for the output linecard to drop, by use of a random selection method. The destination computer then does not receive the packet. The random selection of packets to drop has the effect of helping to prevent undesirable network synchronization of transmission of replacement packets. With adaptive source computers, the network device then does not reach a congested state, thereby maintaining optimum throughput for the computer network. When an ATM switching fabric is used with ATM cells for the segments, then the Explicit Forward Congestion Indication Field (EFCI bit) of a data cell is used to mark a data cell which has passed through a queue which is filled above a lower threshold level. Data cells arriving at the output line card with the EFCI bit set are then counted, and this count is used in the periodic calculation of the ratio used as input to the RED algorithm.

An annuity provides a guaranteed rate of return for a guarantee period while at the same time providing upward adjustments to the interest rate if there is a corresponding increase in a specified referenced rate, which may be a United States Treasury rate or an interest rate that is used to settle a contract that is traded on a financial futures exchange. The guaranteed base interest rate is set at the beginning of the guarantee period, and the annuity account is credited with the base interest rate for an initial pre-defined period, which is some portion of the guarantee period. Periodically, as defined by the pre-defined period, the then-current referenced rate is compared to a base referenced rate that was defined at the establishment of the guarantee period. If the referenced rate has increased, the interest rate that will be credited to the annuity account value will increase by an amount that is based on the amount of increase in the referenced rate. If the referenced rate has not changed or has decreased, the interest rate that will be credited to the annuity account value will be the guaranteed base interest rate that was set at the beginning of the guarantee period.

There is disclosed a system and method for video coding, and more particularly to video coding that uses structural similarity (SSIM) based rate-distortion optimization methods to improve the perceptual quality of decoded video without increasing data rate, or to reduce the data rate of compressed video stream without sacrificing perceived quality of the decoded video. In an embodiment, the video coding system and method may be a SSIM-based rate-distortion optimization approach that involves minimizing a joint cost function defined as the sum of a data rate term and a distortion functions. The distortion function may be defined to be monotonically increasing with the decrease of SSIM and a Lagrange parameter may be utilized to control the trade-off between rate and distortion. The optimal Lagrange parameter may be found by utilizing the ratio between a reduced-reference SSIM model with respect to quantization step, and a data rate model with respect to quantization step. In an embodiment, a group-of-picture (GOP) level quantization parameter (QP) adjustment method may be used in multi-pass encoding to reduce the bit-rate while keeping similar perceptual video quality. In another embodiment, a frame level QP adjustment method may be used in single-pass encoding to achieve constant SSIM quality. In accordance with an embodiment, the present invention may be implemented entirely at the encoder side and may or may not require any change at the decoder, and may be made compatible with existing video coding standards.

A method, system and computer program product for evaluating or determining a user's insulin sensitivity (SI). An initial step or module may include acquiring SMBG readings from a predetermined period. Another step or module may include computing an estimate of insulin sensitivity (SI) from the SMBG readings. Another step or module may include using the estimate of SI to compute individualized carbohydrate ratio. Additionally, another step or module may include using the estimate of SI to compute individualized correction factor. The computation of the two components of an insulin dose calculator, carbohydrate ratio and correction factor, uses this estimate, which allows the tailoring of carbohydrate ratio and correction factor to the present state of the person.

Embodiments disclosed herein can significantly optimize a root cause analysis and substantially reduce the overall time needed to isolate the root cause or causes of service degradation in an IT environment. By building on the ability of an abnormality detection algorithm to correlate an alarm with one or more events, embodiments disclosed herein can apply data correlation to data points collected within a specified time window by data metrics involved in the generation of the alarm and the event(s). The level of correlation between the primary metric and the probable cause metrics may be adjusted using the ratio between theoretical data points and actual points. The final Root Cause Analysis score may be modified depending upon the adjusted correlation value and presented for user review through a user interface.

What is disclosed is a video-based system and method for estimating heart rate variability from time-series signals generated from video images captured of a subject of interest being monitored for cardiac function. In a manner more fully disclosed herein, low frequency and high frequency components are extracted from a time-series signal obtained by processing a video of the subject being monitored. A ratio of the low and high frequency of the integrated power spectrum within these components is computed. Analysis of the dynamics of this ratio over time is used to estimate heart rate variability. The teachings hereof can be used in a continuous monitoring mode with a relatively high degree of measurement accuracy and find their uses in a variety of diverse applications such as, for instance, emergency rooms, cardiac intensive care units, neonatal intensive care units, and various telemedicine applications.

A shared pixels rendering display includes the procedures of taking samples of sub-pixels (r, g, b) of original pixels that mate the pixel layout (R, G, B) of a color filter; determining content variations of neighboring pixels after sampling, and redistributing after a weighted ratio has been applied to the neighboring pixels of the same color; and a driving IC distributing pixel signals after sampling and weighted ratio redistributing to a mating color filter for displaying. By means of the sampling and weighted ratio redistribution, signal channels required for the display area may be reduced. Hence by using human eye vision error, unnecessary image pixels may be reduced, and the number of required driving IC decreases.

Some event ordering requirements can be determined based on continuous event processing queries. Other event ordering requirements can be determined based on distribution flow types being used to distribute events from event streams to node executing the queries. Events from event streams can be ordered according to ordering semantics that are based on a combination of all of these event ordering requirements. Additionally, virtual computing nodes can be associated with constraints, and computing processors can be associated with capabilities. Virtual computing nodes for processing event streams can be assigned to execute on various computing processors based on both these constraints and capabilities. Additionally, for each of several events in an event stream, a ratio between a total latency and a communication latency can be for determined. Based on an average of these ratios, a quantity of reducing nodes that will be involved in a map-reduce operation can be selected.

A method for identifying data for relocation in a multivolume file system. The method includes generating a file location map, the file location map containing a list of the locations of files that occupy space on each of a plurality of volumes of the file system, wherein The file system comprising least a first volume and a second volume. The method further includes updating the file location map in accordance with changes in a file change log for the file system, and identifying data residing on the first volume of the file system by scanning the file location map. Using the identified data, a ratio of per-file activity during a first time period relative to overall file system activity over a second time period is calculated to derive a file activity ratio for each of the files of the identified data. Files are then selected for relocation based on the file activity ratio.