Abstract: A tutor model building system includes a user interface device having a monitor to present to a user a predetermined learning interface of a problem requiring a solution and an input device for the user to enter data showing actions taken to arrive at a solution into the system, a computer to capture the actions entered by the developer user and to generate a behavior demonstration associated with the actions entered and to combine a plurality of behavior demonstrations created from a plurality of user entered data to a behavior graph, and an output device to provide the behavior graph to an authoring tool.

Abstract: In one aspect, a photonic device includes a substrate layer comprising magnesium fluoride and an optical guiding layer disposed on the substrate layer. The optical guide layer includes silicon dioxide. The substrate layer and the optical guide layer are transparent at an ultraviolet and visible wavelength range. In another aspect, a method includes oxidizing silicon to form a silicon dioxide layer, bonding the silicon dioxide layer to magnesium fluoride, removing the silicon and performing lithography and etching of the silicon dioxide to form a photonic device.

Abstract: Embodiments described herein relate to generating an image of an acoustic field associated with an underwater region. A plurality of submersible sensing devices (SSDs) are disposed so as to be substantially separate from each other in an underwater region, wherein each respective SSD is configured to execute a sink/float mission. During at least a portion of the sink/float mission, within each SSD, an environmental sensor measures at least one environmental parameter, a position sensor detects position information, an acoustic detection sensor detects at least one underwater signal, and a data recording system records mission data. After the sink/float mission, a processor receives mission data from the SSDs and generates an acoustic field image. Advantageously, during the sink/float mission some SSDs can transmit an orthogonal high time-bandwidth signal to help prevent interference between SSD during acoustic detection.

Abstract: In one aspect, a photonic device includes a substrate layer comprising magnesium fluoride and an optical guiding layer disposed on the substrate layer. The optical guide layer includes silicon dioxide. The substrate layer and the optical guide layer are transparent at an ultraviolet and visible wavelength range. In another aspect, a method includes oxidizing silicon to form a silicon dioxide layer, bonding the silicon dioxide layer to magnesium fluoride, removing the silicon and performing lithography and etching of the silicon dioxide to form a photonic device.

Abstract: A system for multiuser, geofixed acoustic simulations using a shared soundscape built and stored on a central server, via interfaces that also allow for live and competitive modification. A central server disseminates sound events from the soundscape to individual devices carried by users, which integrate geolocation information, head orientation information, and head-related transfer functions (HRTFs) to generate user-specific audio feeds. The audio feeds may be played through headsets so that users perceive the shared, geofixed sound events.

Abstract: A system for multiuser, geofixed acoustic simulations using a shared soundscape built and stored on a central server, via interfaces that also allow for live and competitive modification. A central server disseminates sound events from the soundscape to individual devices carried by users, which integrate geolocation information, head orientation information, and head-related transfer functions (HRTFs) to generate user-specific audio feeds. The audio feeds may be played through headsets so that users perceive the shared, geofixed sound events.

Abstract: A tutor model building system includes a user interface device having a monitor to present to a user a predetermined learning interface of a problem requiring a solution and an input device for the user to enter data showing actions taken to arrive at a solution into the system, a computer to capture the actions entered by the developer user and to generate a behavior demonstration associated with the actions entered and to combine a plurality of behavior demonstrations created from a plurality of user entered data to a behavior graph, and an output device to provide the behavior graph to an authoring tool.