Abstract: Apparatuses and methods to test whether a multi-user system will provide satisfactory performance are described. Response times are logged for each individual user, and the measurements are aggregated together in a single file at the end of the test. For each action type, a graph is built that correlates the distribution of the response times as a function of the user load. A break point is determined for each action type at which a response time exceeds a predetermined threshold. By analyzing the different break points, the number of users that can be supported by the multi-user computer system is determined. Additionally, an optimal amount of memory may be determined to support a user load. The amount of memory required per user is computed based on the user load at the projected point where a line that is determined from page output peaks intersects the page input line.

Abstract: An algorithm is provided for a frequency domain reflectometer which takes into account both attenuation per unit length of transmission line and phase shift per unit length of transmission line in a modified Inverse Fourier Transform that converts a frequency domain complex reflection coefficient into a more accurate time domain reflection coefficient so that the distance to a fault can be readily determined.

Abstract: This invention is intended to reduce the cost by displaying the load information of a plurality of circuits with a single display device and transferring one of the two communication units in the measuring instruments from the measuring instruments to the display device to acquire the load information of a plurality of circuits. The display device and the measuring instruments are separated from each other, and the display device includes a plurality of communications units connectable with a plurality of devices, while each of many measuring instruments includes a single communication unit.

Abstract: The intensity of an odour can be quantified by determining what is the response of an odour sensing device to that odour, then transforming the response data to an odour intensity value based on transformation data relating to a set of selected reference odours. The transformation data includes organoleptic data indicating how odour intensity values assigned to the set of reference odours by a sensory panel depend upon the concentration of the reference compounds and includes data indicating how the response data of the odour sensing device when exposed to the set of reference odours depends upon the concentration of the reference compounds. The reference odours may be basic odours defining the dimensions of a multi-dimensional space in which odours can be defined.

Abstract: A present invention provides real-time temperature and power mapping of fully operating electronic devices. The method utilizes infrared (IR) temperature imaging, while an IR-transparent coolant flows through a specially designed cell directly over the electronic device. In order to determine the chip power distributions the individual temperature fields for each heat source of a given power and size on the chip (as realized by a scanning focused laser beam) are measured under the same cooling conditions. Then the measured chip temperature distribution is represented as a superposition of the temperature fields of these individual heat sources and the corresponding power distribution is calculated with a set of linear equations.

Abstract: A method for arranging test stages in a production line for the assembling and testing of wireless communications devices comprises: determining a plurality of tests for testing an assembled wireless communication device; allocating each test requiring a physical actuation or mechanical dynamics for testing the assembled wireless communication device from the plurality of tests to an interactive test stage in the production line; and, allocating each remaining test requiring no physical actuation or mechanical dynamics for testing from the plurality of tests between the interactive test stage and a non-interactive test stage.

Abstract: Methods, apparatuses, media and signals for evaluating a vessel. One method includes receiving at least one measurement of a physical dimension of the vessel, and producing an indication of abnormality in the vessel, in response to the at least one received measurement and at least one population-based parameter for the vessel. Producing may include producing an indication of stenosis of the vessel, in response to the physical dimension measurement and a population-based reference dimension for the vessel. This may include producing a population-based percent stenosis value in response to a ratio of the physical dimension measurement to the population-based reference dimension. Producing may further include identifying a shape characteristic of the vessel, which may include producing a tapering comparison value in response to the tapering of the vessel and a population-based average tapering value. The vessel may include a coronary artery segment, for example.

Abstract: Disclosed herein is an apparatus and method of calibrating the parameters of a Viterbi detector 138 in which each branch metric is calculated based on noise statistics that depend on the signal hypothesis corresponding to the branch. An offline algorithm for calculating the parameters of data-dependent noise predictive filters 304A–D is presented which has two phases: a noise statistics estimation or training phase, and a filter calculation phase. During the training phase, products of pairs of noise samples are accumulated in order to estimate the noise correlations. Further, the results of the training phase are used to estimate how wide (in bits) the noise correlation accumulation registers need to be. The taps [t2[k],t1[k],t0[k]] of each FIR filter are calculated based on estimates of the entries of a 3-by-3 conditional noise correlation matrix C[k] defined by Cij[k]=E(ni?3nj?3|NRZ condition k).

Abstract: A method and system for constructing a test using a computer system that performs specification matching during the test creation process is disclosed. A test developer determines one or more test item databases from which to select test items. The test item databases are organized based on psychometric and/or content specifications. The developer can examine the textual passages, artwork or statistical information pertaining to a test item before selecting it by clicking on a designation of the test item in a database. The developer can then add the test item to a list of test items for the test. The test development system updates pre-designated psychometric and content specification information as the developer adds each test item to the test. The test developer can use the specification information to determine whether to add to, subtract from, or modify the list of test items selected for the test.

Abstract: A system and method for assisting listening wherein an integrated circuit selects one or more audio sources from among a plurality audio sources to be presented to a signal processing circuit. Selection of the audio source can be automatically executed in response to detection of an external magnetic field, such as from a telephone handset, or manually controlled by a user input.

Abstract: The apparatus reduces the amount of correction for noise value error, so as to reduce work needed for correction to ensure error avoidance, and to improve the freedom of layout design, and to reduce load on DA. Based on a timing chart of signal transfer on each wire, the last edge appearance timing in the signal waveform of a victim whose noise value exceeds a limit value is compared with the last edge appearance timing in the signal waveform of an aggressor, to evaluate the noise value error in the victim. The apparatus is used in static noise checking of cell arrangement and inter-cell wiring after such cell arrangement and inter-cell wiring are performed at design of integrated circuits such as LSIs.

Abstract: The method of detecting the hydrogen concentration by using a first heat-generating resistor of which a first electrophysical quantity varies depending upon the hydrogen concentration and a second heat-generating resistor which is neighboring said first heat-generating resistor in a direction of gas flow and of which a second electrophysical quantity varies depending upon the hydrogen concentration as does the first electrophysical quantity, to detect the concentration of hydrogen based on the first electrophysical quantity and the second electrophysical quantity, the method comprising: calculating the amount of change in a target physical quantity, which is either the first electrophysical quantity or the second electrophysical quantity, calculating the correction amount based on a difference between the first electrophysical quantity and the second electrophysical quantity, and a calculating the concentration of hydrogen based on a difference between the amount of change in the target physical quantity and

Abstract: At least one exemplary embodiment of the present invention includes a method comprising obtaining a first frequency and a second frequency. The method also comprises creating a table of values comprising a plurality of target frequencies intermediate to the first and second frequencies, the table of values also comprising a pulse width, a pulse count, and a differential pulse width corresponding to each of the target frequencies from the plurality of target frequencies. The method further comprises outputting at least a portion of the values to a motion device.

Abstract: A process variation detector includes a pulse-signal generating unit that generates a pulse signal having a pulse width corresponding to a characteristic of a process variation in an integrated circuit based on a clock signal; and an output unit that generates a predetermined value, when the pulse signal indicates a specific process variation, by using a transistor of which a channel width and a gate length are set to an unbalanced state, and outputs the predetermined value.

Abstract: Techniques for controlling analytical instruments are provided. A sequence of steps can be utilized to specify wells of a microfluidic device, mobility to be applied to fluid in the wells, and the duration to apply the mobility. For example, fluids can be sequentially run past down a main channel to a detection zone of the microfluidic device in order to analyze the fluids. In order to increase the efficiency of the analysis, fluids can be processed in parallel by running one fluid down the main channel while another fluid is loaded to the main channel.

Abstract: A digital watermark detection method uses a matched filtering technique on a log polar re-mapping of a watermarked signal to detect peaks associated with a repetitive structure of a watermark.

Abstract: A method of monitoring user usage patterns of a system, comprising the steps of: providing at least one state object (180), the object including a profile representative of user usage; storing the state object at a client location (110); passing, to a central server (120), the state object with each subsequent interaction initiation; and receiving, from the central server, the state object along with the response (170) of the central server, wherein the profile is modified to reflect the interaction between client location and central server. The present invention ides a system and a method for monitoring user usage patterns, and is particularly suited to use in Internet and World Wide Web applications.

Abstract: A self-calibrating sigma-delta converter (SCADC) functions in a calibration mode and in an operational mode. In the calibration mode, a test circuit of the SCADC generates test signals that are periodic rectangular voltage waveforms. Each test signal has a dc component with a precise voltage amplitude, as well as harmonic components. A low-pass filter of a sigma-delta converter (SDC) within the SCADC filters out the harmonic components. A digital calibration processing circuit within the SCADC uses the precise voltage amplitudes to generate digital correction factors that compensate for dc offset error, gain error and INL error of the SDC. In the operational mode, the SDC receives an analog operational signal and outputs an operational digital data stream. The digital calibration processing circuit uses the correction factors to compensate for dc offset error, gain error and INL error in the operational digital data stream and outputs a corrected digital data stream.

Abstract: Random and deterministic components of jitter are separated. A measured value for deterministic jitter and a plurality of values for random jitter are used to calculate a plurality of first ratios (?ml) of random jitter to deterministic jitter. For each of the plurality of values for random jitter, the value for random jitter is convolved with the measured value for deterministic jitter and a double delta approximation is performed on the result to calculate a plurality of second ratios (?dd) of random jitter to deterministic jitter. A double delta approximation is performed on a measured jitter distribution to obtain a ratio (?ddmeas) of random jitter to deterministic jitter. The ratio (?ddmeas) is adjusted using a relationship of the plurality of first ratios (?ml) to the plurality of second ratios (?dd) in order to produce a corrected ratio (?mlcorr).

Abstract: Methods and apparatus are provided for standardizing an interface infrastructure between sensor devices and client applications. The apparatus comprises a Sensor Application Integration Framework (SAIF) in the form of an application program interface (API) transport layer between sensor devices and client applications. Sensor services are registered in the SAIF API as interface definitions, and the client applications search the interface definitions corresponding to desired sensor services. An interactive handshake of messages and data between client applications and sensor services is implemented via the SAIF API by means of standard communication protocols such as XML. The SAIF API abstracts the details of the underlying sensor hardware from the client application, and can therefore function as a standard interface for sensor simulation, for sensor emulation, and for an active sensor device.