Abstract: Systems, methods, and other embodiments associated with event recording are described. One example method includes locally locking a record in an event data store corresponding to an event having a same event type as a given event when a prior occurrence of the given event has not yet been recorded. The event data store is updated to record the given event while the record is locked. One example system includes an event data store configured to store records corresponding to events, an event recorder configured to record event data in the event data store and a local lock actuable by the event recorder. The event recorder is configured to update the locked record to correspond to a received event.

Abstract: Systems, methods, and other embodiments associated with logically expanding a document and determining the relevance of the logically expanded document to a query are described. One method embodiment includes searching an index to locate a document identifier for a document in which a query term appears. The method includes determining whether the index entry includes an expansion identifier, and, if so, producing a logically expanded document. The logically expanded document may include both a document associated with the document identifier and a document associated with the expansion identifier. The method may then determine a relevance value of the logically expanded document with respect to the query and may provide a signal corresponding to the relevance value.

Abstract: Systems, methods, and other embodiments associated with providing query modes for translation-enabled XML documents are described. One method embodiment includes receiving an XPath query to an XML document that may store a translation for a data element. The method embodiment may also include automatically selecting a query mode for the XPath query. The method embodiment may also include querying the XML document using the XPath query and the selected query mode. The query mode may control, at least in part, the operation of an XML database logic.

Abstract: Systems and methods associated with a constant variance filter are described. One system embodiment includes a memory to store a spatially dependent filtered data set having a first degree of homogeneity. The system embodiment may also include a filter logic to produce a data set having a second degree of homogeneity by filtering the spatially dependent filtered data set. The second degree of homogeneity may be greater than the first degree of homogeneity and may indicate spatial independence.

Abstract: An example method for selectively and reversibly preventing the conduction of action potentials in a targeted nerve region is presented. The method includes generating an electrical waveform having two phases and selectively depolarizing a nerve membrane using the electrical waveform. The nerve membrane is depolarized to a state where the nerve membrane cannot conduct an action potential. The depolarization is achieved by selectively repetitively providing the electrical waveform to a targeted nerve region associated with the nerve region to control m gates and h gates in the region and thus to control the availability of ions.

Abstract: Systems, methods, and other embodiments associated with dynamically selectively configuring wireless transmitters associated with MRI detector coils are described. One example apparatus includes a detector coil to receive an NMR signal. The apparatus includes a dynamically configurable transmitter to transmit an RF transmission according to a configurable set of transmission parameters. The RF transmission is based on the NMR signal received by the MRI detector coil. The apparatus includes a tuning logic that cycles between an active state and a passive state under the control of a tuning program. While in the passive state, the tuning logic is to generate substantially no RF that could interfere with receiving the NMR signal at the MRI detector coil. While in the active state, the tuning logic is to configure the dynamically configurable transmitter to transmit according to the set of transmission parameters.

Abstract: Systems, methods, and other embodiments associated with controlling the specific absorption rate (SAR) in a patient associated with a conductor are described. The conductor may be, for example, a wire associated with a pacemaker, a wire associated with a neurostimulator, an orthopaedic device, and so on. One example method includes calibrating a multi-channel transmitter associated with a magnetic resonance imaging (MRI) apparatus imaging the patient. The example method also includes controlling the MRI apparatus to transmit radio frequency (RF) energy to image the patient in a manner where the RF energy will only influence the SAR near the conductor in the patient less than a desired threshold amount.

Abstract: Extended-coverage magnetic resonance imaging coils with optimized homogeneity in longitudinal sensitivity are described. One exemplary coil includes four elements, where two of the elements are opposed-solenoid imaging elements and two of the elements are single loop imaging elements.

Abstract: According to one embodiment, an apparatus comprises a magnet assembly to produce a static magnetic field and a set of high-Tc flux transformers to detect a flux change from an item when the item is subjected to the static magnetic field produced by the magnet assembly and to produce a current based on the flux change. Additionally, the apparatus comprises a set of magnetoresistive sensors to detect a field produced by a current produced in the set of high-Tc flux transformers and a scanning mechanism to produce cyclic relative motion between the apparatus and the item. Furthermore, the apparatus comprises a magnetic shield to shield the magnetoresistive sensors, where the shield is an open ended cylinder made from mu-metal, where mu-metal is a very high magnetic permeability iron-nickel alloy. The apparatus additionally comprises a water interface mechanism to fill a gap between the apparatus and the item with water.

Abstract: Systems, methods, and other embodiments associated with set transparent network communication are described. In one embodiment, in response to receiving a listen signal from a listen requestor, where the listen signal contains a handle identifying a set of interfaces from which the listen requestor is configured to receive incoming network communications: a set of listening endpoints are opened, where a member of the set of listening endpoints is associated with a member of the set of interfaces. The handle is modified to produce a modified handle that identifies the set of listening endpoints. The modified handle facilitates set transparent communication between the listen requester and a member of the set of listening endpoints. The modified handle is provided to the listen requester.

Abstract: Systems, methods, and other embodiments associated with artifact type neutral change management are described. One example method includes maintaining an access table for each artifact in a collaborative software environment that records a most recent access of an artifact on a per user basis. An artifact type registration table is also maintained that maps each artifact type to the access table that records access information for artifacts of the given type and to a data store that stores artifacts of that type. For a given user, artifact pair, queries on the type registration table, access table, and data store are generated to return the last modification time for the artifact and the user's last access time for the artifact. This information is used to determine a change status of the artifact for the given user. This common framework can be used for artifacts of any type that are registered in the type registration table.

Abstract: Systems, methods, and other embodiments associated with controlling a magnetic resonance imaging (MRI) apparatus to perform a balanced steady state free precession (bSSFP) technique that includes magnetization preparation with differentiated velocity encoding and spoiling residual transverse magnetization are described. The example systems, methods, and other embodiments are also associated with acquiring a dark blood image in response to the bSSFP technique. A dark blood image is one in which NMR signal acquired from an object subjected to the bSSFP technique and magnetization preparation includes NMR signal from flowing spins and NMR signal from non-flowing spins in a desired ratio.

Abstract: This application is directed to methods for chemical species signal suppression in magnetic resonance imaging procedures, where Dixon techniques are enhanced by continuously sampling techniques. K-space data is acquired during a period of read gradient associated with a gradient echo pulse acquisition scheme. A total sampling time (TST) acquisition is employed during the read gradient, using three echoes of a TST data set to achieve chemical species separation in both homogeneous fields as well as areas of field inhomogeneity.

Abstract: Systems, methods, and other embodiments associated with automatically summarizing a document are described. One method embodiment includes computing term scores for members of a set of terms in a document to be summarized and computing sentence scores for sentences in a set of sentences in the document. The method embodiment also includes computing a set of entries for a term-sentence matrix that relates terms to sentences. The method embodiment also includes computing a dominant topic for the document and simultaneously ranking the set of terms and the set of sentences based on the dominant topic. The method embodiment provides a summarization item(s) selected from the set of terms and/or the set of sentences.

Abstract: Systems, methodologies, media, and other embodiments associated with supporting queries with hard time constraints are described. One exemplary system embodiment includes logic for accepting a query having a hard time constraint. The example system may also include logic for selectively rewriting the query having the hard time constraint into a query having a row limitation or a sample percentage limitation. In one example, the row limitation or sample percentage limitation are computed by repetitively comparing an estimated query execution time to the hard time constraint. The example system may also include logic for establishing a timer(s) associated with the rewritten query.

Abstract: Methods for confirming location of a catheter tip relative to a targeted location in a blood vessel of a subject and improving visualization of the blood vessels downstream of the catheter tip are provided. The methods comprise acquiring and displaying a first modified MR image of the subject's blood vessels between an insertion site for the catheter and the targeted location; acquiring and displaying a sequence of modified MR images of the blood vessels to monitor advancement of an inserted catheter from the insertion site to an intraluminal stop site at or near the targeted location; delivering a bolus of a magnetic resonance contrast agent through the tip of the catheter and to the intraluminal stop site, wherein the magnetic contrast agent alters the first modified MR image of the subject's blood vessels; acquiring and displaying an updated second MR modified image of the blood vessels at and downstream of the tip of the catheter.

Abstract: Systems, methods, and other embodiments associated with maintaining referential integrity while masking database columns are described. One example method includes determining a transitive closure for dependency relationships involving a column to be masked and other columns related to the column to be masked through a dependency relationship. The example method may also include identifying a root column for a column in the transitive closure and creating a mapping table that stores original values and masking values for the root column. The method includes masking the root column and related child columns based on the mapping table in a manner that maintains referential integrity between the root column and the child column. Integrity may be maintained by masking corresponding values in the root column and a child column(s) with identical mask values from the mapping table.

Abstract: Systems, methods, and other embodiments associated with hybrid optimization strategies in automatic SQL tuning are described. One example method includes receiving a first (e.g., cost-based) execution plan for a user structured query language statement (User SQL) from a first (e.g., cost-based) optimizer. The example method may also include receiving a second (e.g., rules-based) execution plan for the User SQL from a second, different (e.g., rules-based) query optimizer. The method may include identifying a preferred execution plan based on data produced by test executing the execution plans in a reproduced execution environment that reproduces at least a portion of an execution environment in which the user SQL runs. The method may also include controlling a database to execute the User SQL using the preferred execution plan.

Abstract: Systems, methods, computer-readable media and other embodiments are provided for automatically determining a language of a document from a set of candidate languages. In one embodiment, a system includes a logic for setting an assumption value associated with each of the languages of the set of candidate languages where the assumption value indicates that the document is not in the language. A language analyzer determines the language and generates an output that indicates that the document is one language of the candidate languages when the assumption value for the one language passes a threshold value.

Abstract: Systems, methods, and other embodiments associated with test execution of user SQL in server code are described. One example method includes producing a reproduced execution environment that reproduces a portion of an execution environment in which a user SQL runs. The example method may also include running the user SQL in the reproduced execution environment and capturing a statistic associated with performance of the user SQL while the user SQL runs in the reproduced execution environment. The method may conclude by storing, displaying, and/or providing a signal concerning the statistic.