Abstract: A method for seismic imaging includes receiving a multi-shot seismic data set that was collected using one or more streamers having recorders configured to detect seismic waves that propagate through a subterranean domain. The method also includes partitioning the multi-shot seismic data set into windows including a source dimension. The method also includes defining one or more first basis functions that describe the windows of the multi-shot seismic data set. The method also includes generating a model that describes a decomposition of the multi-shot seismic data set using the one or more first basis functions. The method also includes defining one or more second basis functions that describe a selected output data. The method also includes combining the one or more second basis functions with the model to produce a result for a source side wavefield and a receiver side wavefield.

Abstract: The present invention relates to a water intake structure according to a first aspect. The structure includes a plurality of elongate members. The elongate members couple together and are trapezoidal in lateral cross-section. There is also provided a water intake structure according to a second aspect. The structure includes a plurality of elongate members. The elongate members couple together. Each said elongate member has first and second exterior surfaces that are planar and a third exterior surface that is outwardly concave.

Abstract: There is provided a conduit cleaner including an elongate body. The cleaner includes at least one vane coupled to and extending radially outwards from a longitudinal axis of the elongate body. The at least one vane has a distal end portion shaped to abut against and clean an inner surface of a conduit. According to a second aspect, there is provided a conduit cleaner including an elongate body. The cleaner includes a plurality of turbines rotatably coupled to the elongate body. Each turbine includes at least one vane extending outwards from a longitudinal axis of the elongate body. The vanes have distal end portions shaped to abut against and clean an inner surface of the conduit.

Abstract: There is provided a material transfer system including a reciprocating conveyor which selectively moves in a first direction of movement and a second direction of movement opposite the first direction of movement. The conveyor is configured to promote movement of material in the first direction and inhibit movement of material in the second direction. There is further provided a material transfer system comprising a first reciprocating conveyor which selectively moves material towards a first location. The system includes a second reciprocating conveyor which overlaps with the first reciprocating conveyor. The second reciprocating conveyor selectively moves material from the first location towards a second location. There is also provided a material transfer system comprising a passageway having an upstream inlet and a downstream outlet. The passageway may be a conduit, a siphon or chute. The system includes a reciprocating conveyor conveying fluvial material towards the inlet of the passageway.

Abstract: The present invention relates to a water intake structure according to a first aspect. The structure includes a plurality of elongate members. The elongate members couple together and are trapezoidal in lateral cross-section. There is also provided a water intake structure according to a second aspect. The structure includes a plurality of elongate members. The elongate members couple together. Each said elongate member has first and second exterior surfaces that are planar and a third exterior surface that is outwardly concave.

Abstract: A method for seismic imaging includes receiving a multi-shot seismic data set that was collected using one or more streamers having recorders configured to detect seismic waves that propagate through a subterranean domain. The method also includes partitioning the multi-shot seismic data set into windows including a source dimension. The method also includes defining one or more first basis functions that describe the windows of the multi-shot seismic data set. The method also includes generating a model that describes a decomposition of the multi-shot seismic data set using the one or more first basis functions. The method also includes defining one or more second basis functions that describe a selected output data. The method also includes combining the one or more second basis functions with the model to produce a result for a source side wavefield and a receiver side wavefield.

Abstract: In general, techniques of the present disclosure are directed to a system for virtual socializing between electronic devices. In one example, the method includes joining, by a first computing device, a communication session enabling communication between the first computing device and a second computing device. The method includes outputting, multimedia content that is output at the second computing device. The method also includes receiving and outputting, by the first computing device, data from the second computing device using the communication session, while the multimedia content is outputting at the first output device, where the data comprises data captured by an input device of the second computing device. The method further includes sending a configuration request that sets a control model mode of the communication session, where the control model mode controls which computing devices communicatively coupled via the communication session has permission to modify at least the multimedia content.

Abstract: There is disclosed an authentication device (10) for authenticating a luminescent security mark, the device comprising: an illumination source (30) configured to irradiate the security mark with a pulse of excitation radiation so as to cause the security mark to emit luminescent radiation that decays with time; a radiation detector configured to detect the luminescent radiation emitted by the security mark; and an optical waveguide (22) positioned relative to the illumination source (30) and the radiation detector and configured so as to guide by internal reflection both excitation radiation emitted from the illumination source towards the security mark, and luminescent radiation emitted by the security mark towards the radiation detector.

Abstract: A motion base, comprising a pivot structure having a pivot point near the center of gravity of the pivot structure; a platform support by the pivot structure, the platform having a generally horizontal position and a generally vertical position; and, a drive for rotating of the pivot structure at the pivot point to move the platform from the generally horizontal position to the generally vertical position.

Abstract: There is disclosed an authentication device (10) for authenticating a luminescent security mark, the device comprising: an illumination source (30) configured to irradiate the security mark with a pulse of excitation radiation so as to cause the security mark to emit luminescent radiation that decays with time; a radiation detector configured to detect the luminescent radiation emitted by the security mark; and an optical waveguide (22) positioned relative to the illumination source (30) and the radiation detector and configured so as to guide by internal reflection both excitation radiation emitted from the illumination source towards the security mark, and luminescent radiation emitted by the security mark towards the radiation detector.

Abstract: A motion base, comprising a pivot structure having a pivot point near the center of gravity of the pivot structure; a platform support by the pivot structure, the platform having a generally horizontal position and a generally vertical position; and, a drive for rotating of the pivot structure at the pivot point to move the platform from the generally horizontal position to the generally vertical position.

Abstract: In general, techniques of the present disclosure are directed to a system for virtual socializing between electronic devices. In one example, the method includes joining, by a first computing device, a communication session enabling communication between the first computing device and a second computing device. The method includes outputting, multimedia content that is output at the second computing device. The method also includes receiving and outputting, by the first computing device, data from the second computing device using the communication session, while the multimedia content is outputting at the first output device, where the data comprises data captured by an input device of the second computing device. The method further includes sending a configuration request that sets a control model mode of the communication session, where the control model mode controls which computing devices communicatively coupled via the communication session has permission to modify at least the multimedia content.

Abstract: In general, techniques of the present disclosure are directed to a system for virtual socializing between electronic devices. In one example, the method includes joining, by a first computing device, a communication session enabling communication between the first computing device and a second computing device. The method includes outputting, multimedia content that is output at the second computing device. The method also includes receiving and outputting, by the first computing device, data from the second computing device using the communication session, while the multimedia content is outputting at the first output device, where the data comprises data captured by an input device of the second computing device. The method further includes sending a configuration request that sets a control model mode of the communication session, where the control model mode controls which computing devices communicatively coupled via the communication session has permission to modify at least the multimedia content.

Abstract: A system for sequentially switching a plurality of guide ways to accommodate at least one vehicle with a plurality of ground engaging portions following a plurality of plural track segments is provided. The system includes a primary guide way to receive at least one of the plurality of ground engaging portions of the at least one vehicle and a secondary guide way located in proximity to the primary guide way. The secondary guide way may be configured to receive another of the plurality of ground engaging portions of the at least one vehicle. The system may also include a controller configured to sequentially switch the primary guide way and the secondary guide way whereby the at least one vehicle may travel in one direction or in another direction. A method of switching a plurality of guide ways is also presented.

Abstract: The technologies described herein include systems and methods for performing a first seismic survey and performing a second seismic survey after a predetermined amount of time has lapsed between the first seismic survey and the second seismic survey. The shot times and the shot positions of the second seismic survey may be substantially the same as the shot times and the shot positions of the first seismic survey. After performing the seismic surveys, seismic data generated by the first seismic survey may be processed to generate a first image, and seismic data generated by the second seismic survey may be processed to generate a second image. After generating the first and second images, a difference between the first image and the second image may be computed to generate a time lapse difference image.

Abstract: Double-door stop apparatus comprises a rigid elongate bar element which has a length which spans a distance between open oppositely-hinged double doors, and attachment elements on the bar element for releasably fastening the bar element to each of the doors. In use, the double doors are thus securely held stationary in an open condition. Preferably, the apparatus further comprises an awning sheet of flexible material which is extendable from the bar element.

Abstract: The technologies described herein include systems and methods for performing a first seismic survey and performing a second seismic survey after a predetermined amount of time has lapsed between the first seismic survey and the second seismic survey. The shot times and the shot positions of the second seismic survey may be substantially the same as the shot times and the shot positions of the first seismic survey. After performing the seismic surveys, seismic data generated by the first seismic survey may be processed to generate a first image, and seismic data generated by the second seismic survey may be processed to generate a second image. After generating the first and second images, a difference between the first image and the second image may be computed to generate a time lapse difference image.

Abstract: The technologies described herein include systems and methods for performing a first seismic survey and performing a second seismic survey after a predetermined amount of time has lapsed between the first seismic survey and the second seismic survey. The shot times and the shot positions of the second seismic survey may be substantially the same as the shot times and the shot positions of the first seismic survey. After performing the seismic surveys, seismic data generated by the first seismic survey may be processed to generate a first image, and seismic data generated by the second seismic survey may be processed to generate a second image. After generating the first and second images, a difference between the first image and the second image may be computed to generate a time lapse difference image.

Abstract: A system for sequentially switching a plurality of guide ways to accommodate at least one vehicle with a plurality of ground engaging portions following a plurality of plural track segments is provided. The system includes a primary guide way to receive at least one of the plurality of ground engaging portions of the at least one vehicle and a secondary guide way located in proximity to the primary guide way. The secondary guide way may be configured to receive another of the plurality of ground engaging portions of the at least one vehicle. The system may also include a controller configured to sequentially switch the primary guide way and the secondary guide way whereby the at least one vehicle may travel in one direction or in another direction. A method of switching a plurality of guide ways is also presented.

Abstract: A system for sequentially switching a plurality of guide ways to accommodate at least one vehicle with a plurality of ground engaging portions following a plurality of plural track segments is provided. The system includes a primary guide way to receive at least one of the plurality of ground engaging portions of the at least one vehicle and a secondary guide way located in proximity to the primary guide way. The secondary guide way may be configured to receive another of the plurality of ground engaging portions of the at least one vehicle. The system may also include a controller configured to sequentially switch the primary guide way and the secondary guide way whereby the at least one vehicle may travel in one direction or in another direction. A method of switching a plurality of guide ways is also presented.