Abstract: A system and computer implemented method for pairing an service provider with a user comprises a memory unit to store a database comprising one or more records associated with at least one service provider, and a set of program modules. The system further comprises a processor to execute the set of program modules. The set of program modules comprises a location detection module, a service provider availability module, a service provider selection module, and a communication module. The service provider availability module is configured to determine availability of the service provider in a vicinity of a location of the user. The service provider selection module is configured to assign the service provider to the user. The communication module is configured to request the service provider to provide a service to the user, thereby pairing at least one service provider with the user.

Abstract: A consistency verification tool performs a consistency check on subscriber data records stored in the cellular telephone system. One such consistency check analyzes subscriber data records in a home location register (HLR) and a billing system to determine the presence of duplicate records. Duplicate records can be stored in a duplicate record file for later analysis. During the duplicate record consistency analysis, the consistency verification tool creates a record list. The record list can be a linked list structure for storing main records and duplicate records in a manner that facilitates identifying families of duplicate records. The consistency verification tool can also perform inter-device consistency checks. For example, the subscriber data stored on the HLR can be compared to the subscriber data stored in the billing system to ensure that the two systems have consistent subscriber data.

Abstract: Systems and methods are provided for coordinating telephony and web services. One method embodiment includes defining a call control XML (ccXML) element associated with accessing a web service application. The method includes extracting a session identification (ID) from a ccXML action in a telephony session. The session ID is used to store and retrieve session context in a context repository. A web service application is invoked using the session ID to coordinate events and context between the telephony session and the web service application.

Abstract: Systems and methods, including computer executable instructions, are provided for telephony service chaining. One method includes invoking a first application in a telephony session. The method includes retrieving a session context associated with the first application and using the session context an input to invoke a second application in the telephony session.

Abstract: A structure and method of forming same, comprising a low threading density alloy graded layer, deposited according to a deposition temperature profile in correspondence with increasing alloy composition. In one embodiment, a first substantially relaxed alloy graded layer is deposited while varying a deposition temperature according to a first temperature profile. A second substantially relaxed alloy graded layer is deposited over the first graded layer while varying a deposition temperature according to a second temperature profile. Preferably, the minimum signed rate of change of the second temperature profile is less than the maximum signed rate of change of the first temperature profile.

Abstract: A semiconductor-based structure includes first and second layers bonded directly to each other at an interface. Parallel to the interface, the lattice spacing of the second layer is different than the lattice spacing of the first layer. The first and second layers are each formed of essentially the same semiconductor. A method for making a semiconductor-based structure includes providing first and second layers that are formed of essentially the same semiconductor. The first and second layers have, respectively, first and second surfaces. The second layer has a different lattice spacing parallel to the second surface than the lattice spacing of the first layer parallel to the first surface. The method includes contacting the first and second surfaces, and annealing to promote direct atomic bonding between the first and second layers.

Abstract: A semiconductor-based structure includes first, second, and intermediate layers, with the intermediate layer bonded directly to the first layer, and in contact with the second layer. Parallel to the bonded interface, the lattice spacing of the second layer is different than the lattice spacing of the first layer, though first and second layers are each formed of essentially the same semiconductor. A method for making a semiconductor-based structure includes directly bonding a first layer to an intermediate layer, and providing a second layer in contact with the intermediate layer.

Abstract: Voltage sources produce desired current patterns in an ACT-type Electrical Impedance Tomography (EIT) system. An iterative adaptive algorithm generates the necessary voltage pattern that will result in the desired current pattern. The convergence of the algorithm is shown under the condition that the estimation error of the linear mapping from voltage to current is small. The simulation results are presented along with the implication of the convergence condition.

Abstract: A data storage system allows a subscriber to store data at the time the subscriber experiences the date with an indication, such as a press of a button or a voice command. The indication causes a request to obtain and store the data to be issued. For example, the subscriber can store music while listening to it, store movies while viewing them, or store movie soundtracks while viewing movies. The entire music file can be stored, for example, in a vehicle in which the subscriber is traveling. For some environments, such as storage in a cellular telephone, a portion of the music is stored in a format compatible for that environment, such as cellular telephone ring tone format. When the indication is received, a determination is made as to which music is required, generally by determining the time of the indication. The music heard by the listener is then downloaded for storage in accordance with the subscriber's request.

Abstract: In electrical impedance tomography systems, the precision of voltage measurement is a critical factor in the results. Usually, the voltage values to be measured are limited by the necessity of limiting currents through the body to safe values. An effective method for increasing the apparent precision of the voltmeters is to use non-sinusoidal current patterns that produce the largest voltage variations in regions of most importance. This invention discloses several improvements in the methods by which the images resulting from any system of hardware that permits simultaneous injection of currents to all electrodes and voltage measurements at all electrodes, may be improved. One such improvement is a technique to find the shapes of the best current patterns to distinguish two different distributions of admittivity, conductivity, and permittivity in the region surrounded by electrodes.

Abstract: An apparatus for electrical impedance imaging of a body includes an array of multiple electrodes. Each is connected to an adjustable amplitude precision current source of fixed frequency and an oversampling type digital voltmeter. The current amplitudes are set to produce a series of spatial current patterns, all orthogonal to each other, and each applied for only a short time interval while voltages are measured. The voltage and current values are used to create real and reactive impedance images of the interior of the body.

Abstract: A method for the impedance imaging of a three-dimensional body utilizes electrtodes on the outer surface of the body which receive a set of current patterns. The resulting voltage patterns are measured at the outer boundary of the body. Synthesized resulting patterns are then calculated for inner boundaries of the body, each at a selected incremental distance inwardly of the outer boundary. The synthesis step is repeated for successive inner boundaries until the center of the body is reached. The measured and synthesized patterns are utilized to calculate or otherwise find various medium properties in the body, such as the electric conductivity and electric permittivity for the body. These impedance characteristics based on the measured and synthesized patterns are used to produce an image of the body.

Abstract: A method in electrical impedance tomography uses an adaptive repeated series of calculations and measurements to determine the best current pattern for a body having an initially unknown internal conductivity, for producing the best electrical impedance image for the body. Initially, an arbitrary current pattern and conductivity is utilized to generate a voltage pattern which is measured and compared with the theoretical voltage pattern based on the arbitrary conductivity and current patterns. When both the current pattern and the conductivity yielded by the process closely match values derived by measurements, the voltage pattern is used to produce the image.

Abstract: A method for obtaining sets of current patterns for three-dimensionally imaging the interior of a body having an internal resistivity using electrical impedance tomography comprises providing an array of electrodes arranged in a plurality of groups for an impedance imaging system. A linearly independent set of current patterns is also established for forming a basis for each group. A constant pattern is then adjoined to each basis for forming an augmented basis for each group. A tensor product is then taken of the augmented basis for forming a tensor product basis. Finally, the constant pattern from the tensor product basis is removed in order to establish a basis of current patterns for being applied to the array of electrodes.

Abstract: A method of practicing electrical impedance tomography produces three-dimensional images of a body. First, one applies certain special current patterns to the body through an array of electrodes attached to the surface. For each current pattern, one measures the voltage at each electrode, thus obtaining a corresponding pattern of voltages. These data are then used in a certain special reconstruction process, which enables a full three-dimensional reconstruction to be done in a short time. The result is a display of an approximation to the electric conductivity and/or electric permittivity in the interior of the body.

Abstract: In an electrical impedance imaging system that is capable of forming images based on internal resistivity of a body, an array of electrodes is applied to the surface of the body and energized by a plurality of current generators. Each current generator is controlled to produce current patterns containing single fixed magnitudes. The current generators are also controlled to apply current to the respective electrode only when the current generator is at peak current value to minimize transient conditions and maximize the rate at which images can be produced.

Abstract: A method and apparatus for an electric current computed tomography system having an array of electrodes determines the best pattern of currents to apply to the electrodes based on the precision of the system for distinguishing between a known conductivity in a body and an unknown conductivity. An arbitrary current pattern is first applied to the array, which is at the surface of the body. Measurements are then taken for the resulting voltage pattern of the unknown conductivity. Calculations are then made to determine the calculated voltage pattern for the selected conductivity. The absolute value of the difference between the calculated and measured voltage patterns are then taken and, from this, a new current pattern is calculated. If the difference between the new current pattern and the arbitrary current pattern is less than the precision of the system, the arbitrary current pattern is applied to the electrodes. More likely, however, the difference will be greater than the precision.

Abstract: Polyfluorinated substituted quinoline mono- and dioxo compounds and a method for preparing them are described. The fluorinated oxo compounds are useful as antifungal agents.