Abstract: A set of nodes are organized into a graph to represent a workflow to enable the dynamic and directed management of that workflow in a decentralized system. Each node maintains a value necessary for execution of the workflow, and includes code to populate that value. A workflow agent manages the population of the values according to an identified dependency structure for the nodes relative to the workflow. As changes are made to the workflow, the workflow agent ensures that values and dependencies of the nodes stay up-to-date. Each node retains historic values, which enables the workflow agent to query several states of the workflow throughout time as changes are made thereto. The dynamic management of the nodes improves the responsiveness of the system to changes, thereby improving computational efficiency.

Abstract: The present disclosure is directed to systems and methods that include a beacon that includes an antenna; data storage configured to store a code that is calculated according to an algorithm and based on a first variable, the first variable being defined according to a first interval of time; and a processor configured to cause the code to be emitted by the beacon.

Abstract: An aquarium filter cartridge includes a frame and a media pack attached to the frame. The frame includes recessed sections along the sides. The filter cartridge can be part of dual filter cartridge, also including a biological host media filter element. The filter cartridge or the dual filter cartridge can be mounted in a filter housing by sliding within receiving grooves in the filter housing. Methods of servicing are included.

Abstract: An aquarium filter cartridge includes a frame and a media pack attached to the frame. The frame includes recessed sections along the sides. The filter cartridge can be part of dual filter cartridge, also including a biological host media filter element. The filter cartridge or the dual filter cartridge can be mounted in a filter housing by sliding within receiving grooves in the filter housing. Methods of servicing are included.

Abstract: Autonomous propulsion apparatus and methods are disclosed. An example autonomous propulsion unit includes a flight controller capable of executing flight control instructions stored in a memory of the autonomous propulsion unit; and a propulsor to generate propulsion in accordance with the instructions for a payload carrier to which the autonomous propulsion unit is coupled, wherein the flight controller is to provide flight control for the propulsor in an absence of flight control instructions from the payload carrier.

Abstract: The present disclosure is directed to systems and methods that include a beacon that includes an antenna; data storage configured to store a code that is calculated according to an algorithm and based on a first variable, the first variable being defined according to a first interval of time; and a processor configured to cause the code to be emitted by the beacon.

Abstract: An integrated circuit includes an array of pixels for capturing and processing successive image frames of a moving scene, the array including at least one row of pixels (inputs); and at least one current value register, in which the current value register is configured to store current pixel values captured from the array (inputs). Also included is at least one set of multiple accumulated value registers, in which each accumulated value register is configured to communicate with the current value register. Furthermore, there is included at least one readout register, in which the readout register is configured to communicate with the set of accumulated value registers. A controller is also included for shifting and summing the rows of pixels and outputting a summed column as a time delayed integrated (TDI) signal.

Abstract: A passive phased array imager includes a plurality of antennas, disposed on a substrate, for receiving a wavefront from a target; and a coplanar waveguide, disposed in the substrate and coupled to the plurality of antennas. Also included is a plurality of detectors, disposed across the coplanar waveguide for sampling the received wavefront, and providing multiple output voltages to an imaging circuit for displaying information contained in the received wavefront. The plurality of antennas includes at least two dipoles coupled to the coplanar waveguide, and the two dipoles are spaced by a predetermined length to provide a standing wave at a frequency of interest.

Abstract: Autonomous propulsion apparatus and methods are disclosed. An example autonomous propulsion unit includes a flight controller capable of executing flight control instructions stored in a memory of the autonomous propulsion unit; and a propulsor to generate propulsion in accordance with the instructions for a payload carrier to which the autonomous propulsion unit is coupled, wherein the flight controller is to provide flight control for the propulsor in an absence of flight control instructions from the payload carrier.

Abstract: A focal plane array (FPA) imaging sensor includes an array of multiple tuning cells disposed on a monolithic substrate, in which each tuning cell includes: (a) a tunable etalon disposed in the monolithic substrate, and (b) a THz detector assembly comprised of at least two antennae disposed in the monolithic substrate. The THz detector assembly is disposed below the tunable etalon. Each tunable etalon includes a Fabry-Pérot interferometer comprised of upper and lower mirrors, spaced by a gap between the mirrors, the gap forming an etalon of the interferometer. The FPA imaging sensor may also be formed as a hybrid, in which portions of the tuning cells are fabricated separately from the THz detector assembly and aligned to each other. The lower mirrors may also be fabricated monolithically with the substrate and the upper mirrors may be formed separately and then aligned to the lower mirrors.

Abstract: A basking heater for an animal, such as a reptile, includes a housing, a heating element within the housing, and an opening in a bottom of the housing, so that the heating element may radiate heat through the opening, and an attachment arrangement. The attachment arrangement can be used to selectively attach the heater to a terrarium. The housing can be made of thermal plastic resin and can include vents for cooling the housing. The housing can have low profile shape. The heater may have multiple power settings.

Abstract: A terahertz (THz) imaging device includes a tunable filter and a focal plane array (FPA) for receiving selected optical wavelengths of light. The tunable filter includes: (a) a first mirror comprised of a thick silicon substrate and a thin silicon membrane, in which the thin silicon membrane is separated from the thick silicon substrate by a gridded cell structure, (b) a second mirror comprised of a thick silicon substrate and a thin silicon membrane, in which the thin silicon membrane is separated from the thick silicon substrate by another gridded cell structure, and (c) a variable gap disposed between the first and second mirrors. The gridded cell structure may have a hexagonal shape, a square shape, a rectangular shape, a triangular shape or a rhombus-like shape.

Abstract: A monolithic focal plane array (FPA) of an imaging system includes an array of multiple pixel unit cells disposed on a substrate. Each pixel unit cell includes: a first array of THz antennae disposed on a top layer of the substrate, and a second array of context imaging pixels disposed on the top layer of the substrate. The first and second arrays are interleaved on the top layer of the substrate. In addition, each THz antenna in the first array is shaped either in a bow-tie, circular or tuned waveguide configuration, and each context imaging pixel in the second array is shaped in a circular, or rectangular configuration.

Abstract: An aquarium filter cartridge includes a frame and a media pack attached to the frame. The frame includes recessed sections along the sides. The filter cartridge can be part of dual filter cartridge, also including a biological host media filter element. The filter cartridge or the dual filter cartridge can be mounted in a filter housing by sliding within receiving grooves in the filter housing. Methods of servicing are included.

Abstract: Embodiments are provided for creating a personalized search index and supplementing searches with an additional set of keywords. A first set of keywords is received from a user. A first index associated with the user is searched using the first set of keywords to generate a first set of search results. The first index includes content identified by the user. A second set of keywords is defined based on the first set of search results. A second index is searched using the second set of keywords to generate a second set of search results. At least a portion of the first and second sets of search results is provided to the user. Some embodiments are implemented as a cloud computing service.

Abstract: A protein skimmer having a water column chamber and a fixed deflector. The fixed deflector including a plurality of blades that impart a swirling action on water flowing through the deflector. The deflector further providing an even distribution of bubbles within the water column chamber during protein filtering operation. The deflector including a central hub that aids in maintaining the velocity of water flowing through the deflector.

Abstract: A filter cartridge including a filtering body having first and second porous filter walls. The second porous filter wall having a density that is different than the first porous filter wall. The density of the second porous filter wall being defined by interstitial spaces. The filter cartridge further including discrete chemically filtering particles that are captured within the interstitial spaces of the second porous filter wall when the filtering body is in a vertical filtering orientation.

Abstract: A protein skimmer having a water column chamber and a fixed deflector. The fixed deflector including a plurality of blades that impart a swirling action on water flowing through the deflector. The deflector further providing an even distribution of bubbles within the water column chamber during protein filtering operation. The deflector including a central hub that aids in maintaining the velocity of water flowing through the deflector.