Abstract: Some embodiments provide a method for defining a content relevance model for determining whether a content segment is relevant to a particular category. The method receives a first set of content segments that contain content relevant to the particular category and a second set of content segments that contain content not relevant to the particular category. The method identifies a set of key word sets more likely to appear in the first set of content segments than the second set of content segments. The method defines a content relevance model that comprises a set of groups of word sets and a score for each group, each of the groups of word sets comprising a key word set from the set of key word sets and at least one word set found in a context of the key word set in at least one of the received content segments.

Abstract: A wedge for a wound rotor includes a wedge body. The wedge body has a first layer and one or more second layers interfused with one another to provide structural support and limit resistive heating of the wedge from current flow within the wedge body by windings spaced apart by the rotor wedge. Generator rotors and methods of making generator rotors are also described.

Abstract: A contactor arrangement includes a post, a fastener and a temperature sensor. The post defines a post axis. The fastener is fixed to the post along the post axis. The temperature sensor is in thermal communication with the contactor conductor and post through the fastener and is electrically insulated from the post for monitoring resistive heat generation in a contactor fixed to the post by the fastener.

Abstract: To measure usage of computing resources on a computer, a logging service running on the computer generates event data. The computer transmits the event data to an event processing system. With a large number of computers, each computer transmits its event data to the event processing system. The event processing system stores the event data in a storage system as a file system object, such as a stream or file, in which different data fields of the received event data are stored in a structured or semi-structured manner. The event data can be processed in parallel on different pivots using map-reduce operations. Such processing can include, but is not limited to, de-duplicating event data, aggregating event data related to a resource into measurements of usage of that resource, and grouping original data or aggregated data by user or group of user for further analysis and reporting.

Abstract: A contactor arrangement includes a post, a fastener and a temperature sensor. The post defines a post axis. The fastener is fixed to the post along the post axis. The temperature sensor is in thermal communication with the contactor conductor and post through the fastener and is electrically insulated from the post for monitoring resistive heat generation in a contactor fixed to the post by the fastener.

Abstract: Apparatuses, systems, methods, and computer program products are disclosed for adaptive machine learning. An apparatus includes a monitoring module that continuously monitors one or more interactions of a user while the user performs one or more simulated tasks digitally presented to the user that are associated with a learning path. The apparatus includes a metadata module that tracks data describing the user's interactions during the user's performance of one or more simulated tasks. The apparatus includes a machine learning module that, dynamically and in real-time, optimizes the user's learning path by simulating multiple different learning paths using one or more machine learning processes and tracked data. The apparatus includes a recommendation module that presents one or more recommendations to the user for optimizing the user's learning path. One or more recommendations may be generated as a function of the optimized learning path.

Abstract: A processor implemented method for scoring a challenge taken by a user, and training the user using a simulation based learning platform is provided. The processor implemented method includes (i) obtaining, from a database, challenges to be taken by a user and associated at least one of information, (iii) processing a selection of, the challenge from the challenges with actions or steps performed by the user, (iv) rendering, hints to solve the challenge, (v) recording, steps taken by the user to solve the challenge, (vi) comparing the steps taken by the user with steps taken by an expert to solve the challenge to compute a deviance of the user from a reference path, (vii) scoring, the challenge based on the deviance of the user from the reference path to obtain a score, and (viii) notifying, a result associated with the challenge to the user based on the score.

Abstract: Some embodiments provide a program that identifies an entity having an entity attribute. The program receives, from each method of several methods, a set of candidate identity attributes that are each for identifying a particular entity having the entity attribute specified in the document. Each method of the several methods generates the corresponding set of candidate identity attributes based on the entity attribute specified in a document. The program calculates a score for each candidate identity attribute in the sets of candidate identity attributes. The program identifies, based on the sets of scores, an identity attribute from the sets of candidate identity attributes that identifies the entity having the entity attribute specified in the document.

Abstract: An apparatus and method for providing an improved heading estimate of a mobile device in a vehicle is presented. First, the mobile device determines if it is mounted in a cradle attached to the vehicle; if so, inertia sensor data may be valid. While in a mounted stated, the mobile device determines whether it has been rotated in the cradle; if so, inertia sensor data may no longer be reliable and a recalibration to determine a new relative orientation between the vehicle and the mobile device is needed. If the mobile device is mounted and not recently rotated, heading data from multiple sensors (e.g., GPS, gyroscope, accelerometer) may be computed and combined to form the improved heading estimate. This improved heading estimate may be used to form an improved velocity estimate. The improved heading estimate may also be used to compute a bias to correct a gyroscope.

Abstract: A processor implemented method for scoring a challenge taken by a user, and training the user using a simulation based learning platform is provided. The processor implemented method includes (i) obtaining, from a database, challenges to be taken by a user and associated at least one of information, (iii) processing a selection of, the challenge from the challenges with actions or steps performed by the user, (iv) rendering, hints to solve the challenge, (v) recording, steps taken by the user to solve the challenge, (vi) comparing the steps taken by the user with steps taken by an expert to solve the challenge to compute a deviance of the user from a reference path, (vii) scoring, the challenge based on the deviance of the user from the reference path to obtain a score, and (viii) notifying, a result associated with the challenge to the user based on the score.

Abstract: An apparatus and method for providing an improved heading estimate of a mobile device in a vehicle is presented. First, the mobile device determines if it is mounted in a cradle attached to the vehicle; if so, inertia sensor data may be valid. While in a mounted stated, the mobile device determines whether it has been rotated in the cradle; if so, inertia sensor data may no longer be reliable and a recalibration to determine a new relative orientation between the vehicle and the mobile device is needed. If the mobile device is mounted and not recently rotated, heading data from multiple sensors (e.g., GPS, gyroscope, accelerometer) may be computed and combined to form the improved heading estimate. This improved heading estimate may be used to form an improved velocity estimate. The improved heading estimate may also be used to compute a bias to correct a gyroscope.

Abstract: Some embodiments provide a method for defining a content relevance model for determining whether a content segment is relevant to a particular category. The method receives a first set of content segments that contain content relevant to the particular category and a second set of content segments that contain content not relevant to the particular category. The method identifies a set of key word sets more likely to appear in the first set of content segments than the second set of content segments. The method defines a content relevance model that comprises a set of groups of word sets and a score for each group, each of the groups of word sets comprising a key word set from the set of key word sets and at least one word set found in a context of the key word set in at least one of the received content segments.

Abstract: In one embodiment, a system for thermal management in a CT device comprises first and second thermal management zones, each comprising an x-ray detector, at least one variable speed fan proximate to the x-ray detector, an air temperature sensor positioned to measure an air temperature of the intake air to the variable speed fan, a rail heater in thermal contact with the x-ray detector, a rail temperature sensor in thermal contact with the rail heater to measure a rail temperature, and a controller that controls the variable speed fan as a function of at least the air temperature and the rail heater as a function of the rail temperature to maintain a temperature of the x-ray detector within a predetermined range.

Abstract: In one embodiment, a system for thermal management in a CT device comprises first and second thermal management zones, each comprising an x-ray detector, at least one variable speed fan proximate to the x-ray detector, an air temperature sensor positioned to measure an air temperature of the intake air to the variable speed fan, a rail heater in thermal contact with the x-ray detector, a rail temperature sensor in thermal contact with the rail heater to measure a rail temperature, and a controller that controls the variable speed fan as a function of at least the air temperature and the rail heater as a function of the rail temperature to maintain a temperature of the x-ray detector within a predetermined range.

Abstract: A CT system includes a rotatable gantry having an opening for receiving an object to be scanned, an x-ray source configured to project x-rays through the opening, and a detector assembly positioned to receive the x-rays. The detector assembly includes a plurality of readout chips positioned within a cooling zone and configured to receive electrical signals from a plurality of diode arrays, and a fan positioned to blow air into the cooling zone. An air temperature within the cooling zone is controlled independent of a speed of the fan.

Abstract: A processor implemented method for scoring a challenge taken by a user, and training the user using a simulation based learning platform is provided. The processor implemented method includes (i) obtaining, from a database, challenges to be taken by a user and associated at least one of information, (iii) processing a selection of, the challenge from the challenges with actions or steps performed by the user, (iv) rendering, hints to solve the challenge, (v) recording, steps taken by the user to solve the challenge, (vi) comparing the steps taken by the user with steps taken by an expert to solve the challenge to compute a deviance of the user from a reference path, (vii) scoring, the challenge based on the deviance of the user from the reference path to obtain a score, and (viii) notifying, a result associated with the challenge to the user based on the score.

Abstract: A CT system includes a rotatable gantry having an opening for receiving an object to be scanned, an x-ray source configured to project x-rays through the opening, and a detector assembly positioned to receive the x-rays. The detector assembly includes a plurality of readout chips positioned within a cooling zone and configured to receive electrical signals from a plurality of diode arrays, and a fan positioned to blow air into the cooling zone. An air temperature within the cooling zone is controlled independent of a speed of the fan.

Abstract: A data acquired system is provided. The data acquired system includes a main structure with a cavity formed therein, the cavity having a bottom for mounting a circuit board with electrical components thereto, a fan assembly disposed on the main structure, and an airflow guide disposed within the cavity and configured to guide airflow from the fan assembly for heat dissipation of the electrical components, the airflow guide positioned at a distance above the electrical components to form a gap between the airflow guide and the electrical components, wherein a sidewall of the cavity is provided with an air vent corresponding to the gap such that the airflow passes through the gap and is discharged from the air vent.

Abstract: Some embodiments provide a method for evaluating a content segment for relevancy to several of categories. The method retrieves the content segment. For each of the several categories, the method determines the relevancy of the content segment to the category by using a scoring model for the category. The scoring model accounts for (i) the presence of key word sets in the content segment and (ii) the context of the key word sets in the content segment. For each of the several categories, the method tags the content segment when the content segment is determined as relevant to the category.

Abstract: Some embodiments provide a program that identifies an entity having an entity attribute. The program receives, from each method of several methods, a set of candidate identity attributes that are each for identifying a particular entity having the entity attribute specified in the document. Each method of the several methods generates the corresponding set of candidate identity attributes based on the entity attribute specified in a document. The program calculates a score for each candidate identity attribute in the sets of candidate identity attributes. The program identifies, based on the sets of scores, an identity attribute from the sets of candidate identity attributes that identifies the entity having the entity attribute specified in the document.