Abstract: A method and system of improving T2* times for magnetic sensing using spin center ensembles is disclosed. The spin bath associated with the spin centers may be driven with a first source of electromagnetic radiation to reduce dephasing of the spin centers. The spin centers may be measured using double quantum (DQ) magnetometry in order to reduce the effects of crystal strain on T2*. Accordingly, up to an 8× improvement in DC field sensitivity may be accomplished for a spin center ensemble.

Abstract: Solid-state spin sensor systems and methods of manufacturing are disclosed. A mounting structure may be provided in thermal contact with a solid-state spin sensor having a plurality of color center defects such that thermal energy flows from the solid-state spin sensor to the mounting structure. A microwave application structure may be disposed on a face of the mounting structure or a face of the solid-state spin sensor for applying microwave radiation to the solid-state spin sensor.

Abstract: A display system comprises a screen having a concave spherical surface positioned so as to be visible to a user of the system. The screen comprises a plurality of kite-shaped screen elements supported adjacent one another so as to form that spherical surface. Each of the screen elements comprises a respective faceplate comprising optical fibers extending adjacent each other so as to transmit light therethrough between two opposing face surfaces. One of the face surfaces is a concave spherical display image output surface, and the other of the face surfaces is a substantially planar image input surface. The screen elements also each comprise a respective image panel having a field of pixels each transmitting light corresponding to serial images of said panel. The fibers of the faceplate receive the light of the pixels of the image panel and together transmit the light from the image panel coherently to its image output surface so that the images of the panel are displayed on the image output surface.

Abstract: Methods for separating microorganisms from non-microorganism cells in a non-microorganism cell-containing sample comprise incubating the sample with particles to form particle-microorganism complexes and then separating the particle-microorganism complexes from the non-microorganism cells. These methods are used to detect the absence or presence of a microorganism in a sample that also contains non-microorganism cells. Particular reagents and combinations of reagents enhance the selective capture of microorganisms in mixed samples. Corresponding compositions and kits are also provided.

Abstract: A system and method determine the location of a device. The device collects sensor data using one or more sensors. Based on the sensor data, one or more localization models are selected from a plurality of localization models. The selected models are applied to generate one or more candidate locations. The current location of the device is determined based on the one or more candidate locations.

Abstract: A system and method determine the location of a device. The device collects sensor data using one or more sensors. Based on the sensor data, one or more localization models are selected from a plurality of localization models. The selected models are applied to generate one or more candidate locations. The current location of the device is determined based on the one or more candidate locations.

Abstract: A motorized and automated shutter with slip clutch provides automated control of positioning of the louvers while allowing manual movement of the louvers without damage to the drive train and without disrupting automated control. A slip clutch assembly in the motorized drive train allows manual movement of the louvers of the shutter without imparting force back into the drive motor. A position sensor monitors the position of the louver and provides a signal to control circuitry to allow synchronization or simultaneous operation of multiple window shutters based on manual movement of a single louver.

Abstract: Processing of actions within a shared augmented reality experience is split between an edge node of a communications network (e.g., a cell tower) and a server. As a result, computation of the current state may be sharded naturally based on real-world location, with state updates generally provided by the edge node and the server providing conflict resolution based on a master state (e.g., where actions connected to different edge nodes potentially interfere with each other). In this way, latency may be reduced as game actions are communicated between clients connected to the same edge node using a peer-to-peer (P2P) protocol without routing the actions via the game server.

Abstract: A controller for an electromechanical transducer is provided. The controller comprises driving means operable to actuate a mechanical output of the transducer; impedance cancelling means operable to at least partially cancel an electrical impedance of the transducer; and linearising means between an input of the controller and the driving means. The linearising means are operable to generate an output signal by modifying an input signal of the linearising means to compensate for nonlinear behaviour of the transducer. The linearising means are operable to receive one or more state signals indicative of one or more state variables of the transducer, the one or more state signals comprising a velocity signal indicative of a velocity of the mechanical output of the transducer.

Abstract: A system and method for performing vector magnetometry are described. A method can include illuminating diamond with a modulated optical signal and a modulated microwave (MW) signal. A first, bias magnetic field is also applied to the diamond. Light emitted from the diamond in response to the optical signal, the MW signal, and the first magnetic field is detected via a single detector at a fixed position relative to the diamond. A modulation of the detected light encodes information corresponding to a plurality of nitrogen vacancy (NV) axes of the diamond.

Abstract: A manhole device and corresponding system including a manhole is described. The manhole device comprises a main body having an upper portion, a lower portion and a securing means. The securing means is engageable with the manhole such that when secured to the manhole, the upper portion protrudes above a surface level and the lower portion is retained below the surface level in the manhole. The main body provides means for alignment for construction around the manhole while providing a barrier to prevent access to vehicles, people and debris during the construction process. A method of construction is also provided.

Abstract: Reconstructing in-memory data block indices in a distributed data storage system where data blocks are stored in extents and the extents are replicated across storage devices. In one aspect, based on a reboot of a storage device and a copy of an extent stored in the storage device being in an open state, appends for data blocks in the copy of the extent stored in the storage device are replayed to reconstruct an in-memory data block index for the copy of the extent. In another aspect, based on a reboot of a storage device and a copy of an extent being in a closed state, a data block index for the copy of the extent is retrieved from non-volatile storage of the storage device and the retrieved data block index stored in memory at the storage device.

Abstract: A display system comprises a screen having a concave spherical surface positioned so as to be visible to a user of the system. The screen comprises a plurality of kite-shaped screen elements supported adjacent one another so as to form that spherical surface. Each of the screen elements comprises a respective faceplate comprising optical fibers extending adjacent each other so as to transmit light therethrough between two opposing face surfaces. One of the face surfaces is a concave spherical display image output surface, and the other of the face surfaces is a substantially planar image input surface. The screen elements also each comprise a respective image panel having a field of pixels each transmitting light corresponding to serial images of said panel. The fibers of the faceplate receive the light of the pixels of the image panel and together transmit the light from the image panel coherently to its image output surface so that the images of the panel are displayed on the image output surface.

Abstract: Some embodiments provide a GUI for a document reader application for viewing videos in video document panes. In some embodiments, the GUI determines whether to play the video inline within a document pane based on the size of the video document pane. In some embodiments, when a video is being played within a video document pane, a user can select the body of the video document pane to show the full content of the video document. Some embodiments provide a GUI that, when a user scrolls a video off-screen while the videos are playing inline in the document panes, pauses or stops the playback of the video and provides an indication that the playback is being stopped. In some embodiments, the indication is a fading of the video or of audio associated with the video, as the video document is scrolled off-screen.

Abstract: A system and method for performing vector magnetometry are described. A method can include illuminating diamond with a modulated optical signal and a modulated microwave (MW) signal. A first, bias magnetic field is also applied to the diamond. Light emitted from the diamond in response to the optical signal, the MW signal, and the first magnetic field is detected via a single detector at a fixed position relative to the diamond. A modulation of the detected light encodes information corresponding to a plurality of nitrogen vacancy (NV) axes of the diamond.

Abstract: A distributed computing system that executes a set of long-lived jobs is described. During operation, each worker process performs the following operations. First, the worker process identifies a set of jobs to be executed and a set of worker processes that can execute the set of jobs. Next, the worker process sorts the set of worker processes based on unique identifiers for the worker processes. Then, the worker process assigns jobs to each worker process in the set of worker processes, wherein approximately the same number of jobs is assigned to each worker process, and jobs are assigned to the worker processes in sorted order. While assigning jobs, the worker process uses an identifier for each worker process to seed a pseudorandom number generator, and then uses the pseudorandom number generator to select jobs for each worker process to execute.

Abstract: An aircraft fuel system includes one or more fuel cells adapted to contain fuel, a fuel cell receiving assembly having an inner surface adapted to receive the one or more fuel cells and a fuel cell cushion disposed between the inner surface of the fuel cell receiving assembly and the one or more fuel cells. The fuel cell cushion is machined from a foam substrate to form a shaped foam substrate that is substantially covered with a cushion coating. The cushion coating is sprayable onto the shaped foam substrate such that the fuel cell cushion is substantially nonabsorbent of fuel. The fuel cell cushion is interposable between the inner surface of the fuel cell receiving assembly and the one or more fuel cells to cushion the one or more fuel cells from damage.

Abstract: Systems and methods for improving athletic training, performance and rehabilitation. In one example, the system and method perform or include receiving, with an electronic processor, data associated with the subject; generating, with a parameter estimation algorithm, a parameter value for each of a plurality of parameters associated the subject; determining, with the electronic processor, an effect of training on a performance variable, p, associated with the subject; and determining an exercise routine based on optimizing the performance variable.

Abstract: An append-only data storage system is described that stores sets of data blocks in extents that are located in storage devices. During operation of the system, upon receiving a request to copy an extent from a source storage device to a destination storage device, the system creates a scratch extent on the destination storage device, and associates the scratch extent with a private identifier, whereby the scratch extent can only be accessed through the private identifier. The system uses the private identifier to perform a copying operation that copies the extent from the source storage device to the scratch extent on the destination storage device. After the copying operation is complete and the scratch extent is closed, the system associates the scratch extent with a public identifier, whereby the copy of the extent on the destination storage device becomes publically accessible to other entities in the data storage system.

Abstract: Solid-state spin sensor systems and methods of manufacturing are disclosed. A mounting structure may be provided in thermal contact with a solid-state spin sensor having a plurality of color center defects such that thermal energy flows from the solid-state spin sensor to the mounting structure. A microwave application structure may be disposed on a face of the mounting structure or a face of the solid-state spin sensor for applying microwave radiation to the solid-state spin sensor.