Abstract: A fleet of query accelerator nodes is established for a data store. Each accelerator node caches data items of the data store locally. In response to determining that an eviction criterion has been met, one accelerator node removes a particular data item from its local cache without notifying any other accelerator node. After the particular data item has been removed, a second accelerator node receives a read query for the particular data item and provides a response using a locally-cached replica of the data item.

Abstract: A data storage system includes multiple head nodes and data storage sleds. The data storage sleds include multiple mass storage devices and a sled controller. Respective ones of the head nodes are configured to obtain credentials for accessing particular portions of the mass storage devices of the data storage sleds. A sled controller of a data storage sled determines whether a head node attempting to perform a write on a mass storage device of a data storage sled that includes the sled controller is presenting with the write request a valid credential for accessing the mass storage devices of the data storage sled. If the credentials are valid, the sled controller causes the write to be performed and if the credentials are invalid, the sled controller returns a message to the head node indicating that it has been fenced off from the mass storage device.

Abstract: A method of registering a real-time image feed from an imaging device inserted into a steerable catheter using a navigation system is provided. The method includes inserting the imaging device into a working channel of the steerable catheter and generating a real-time image feed of one or more reference points, wherein the orientation of the reference points is known. The method further includes orienting a handle of the steerable catheter to a neutral position, displaying the real-time image feed on a display of the navigation system, and registering the real-time image feed to the steerable catheter by rotating the displayed image so that the reference points in the real-time image feed are matched to the known orientation of the reference points.

Abstract: A system, assembly, module, and method are disclosed for powering a downhole tool in a drilling operation. The system may include a reusable battery module and/or controller to operate multiple batteries.

Abstract: Methods, apparatus and computer program product for creating an externally shared communication channel in a group-based communication platform are described herein. The group-based communication platform may have a plurality of database shards.

Abstract: The machinery and methods disclosed herein are based on the use of a specialized extruder configured to continuously convey and plasticize/moltenize selected lignocellulosic biomass and/or waste plastic materials into a novel variable volume tubular reactor, wherein the plasticized/moltenized material undergoes reaction with circumferentially injected supercritical water—thereby yielding valuable simple sugar solutions and/or liquid hydrocarbon mixtures (e.g., “neodiesel”), both of which are key chemical commodity products. The reaction time may be adjusted by changing the reactor volume. The machinery includes four zones: (1) a feedstock conveyance and plasticization/moltenization zone; (2) a steam generation and manifold distribution zone; (3) a central supercritical water reaction zone; and (4) a pressure let-down and reaction product separation zone.

Abstract: A method may include selecting a first set of values for a first set of parameters of one or more hardware components of an ice-making machine; identifying a water temperature at a water inlet of the ice-making machine; identifying an ambient air temperature surrounding the ice-making machine; calculating a second set of parameters of the ice-making machine based on at least a portion of the first set of values, the water temperature and the ambient temperature, the second set of parameters corresponding to operation of the ice-making machine in a freeze mode in which liquid water is cooled by an evaporator; and calculating a third set of parameters based on at least a portion of the first set of values, the water temperature and the ambient temperature, the third set of parameters corresponding to operation of the ice-making machine in a harvest mode.

Abstract: A system and methodology which enables applications to provide selective permissioning to view, access and/or use features and functionality based on one or more criteria. These criteria may be selected from one or more characteristics associated with the specific user or user group accessing the application. Alternatively or in addition, the permissioning criteria may be based on the amount of payment or fees that the specific user or user group has paid in order to access the application. The usage of other criteria is also possible. For example, permissioning criteria may also include the specific time/day/period that user is accessing the application, the then-current overall usage of the application and/or related resources at the time the application is accessed by the user as well as other criteria.

Abstract: Provided is a microbial fuel cell including a cathode and an anode, wherein the cathode includes a waterproof gas diffusion layer including a siloxane and a catalyst layer including a binder, wherein a surface of the gas diffusion layer opposite the catalyst layer contacts air, and the anode includes electrogenic bacteria. Also provided is a method for making a microbial fuel cell, including fabricating a cathode, wherein fabricating includes disposing a siloxane solution onto a surface of a substrate, wherein the siloxane solution includes a siloxane and a solvent, drying the siloxane solution to form a waterproof gas diffusion layer, and placing the gas diffusion layer on a catalyst layer including a binder, and facing an anode with the cathode whereby the gas diffusion layer faces away from the anode and contacts air.

Abstract: Some embodiments include an integrated structure having semiconductor material within a region between two parallel surfaces. The semiconductor material has grain boundaries parallel to the parallel surfaces. At least one circuit component utilizes a region of the semiconductor material in a gated device. The semiconductor material has little if any metal therein so that the gated device has Ion/Ioff characteristics similar to if the semiconductor material had no metal therein. Some embodiments include a method in which semiconductor material is provided between a pair of parallel surfaces, and in which the parallel surfaces and semiconductor material extend between a first end and a second end. Metal is formed adjacent the first end, and gettering material is formed adjacent the second end. Thermal processing induces crystallization of the semiconductor material and drives the metal along the semiconductor material and into the gettering material. The gettering material is then removed.

Abstract: Techniques are described for providing managed virtual computer networks that have a configured logical network topology with virtual networking devices, such as by a network-accessible configurable network service, with corresponding networking functionality provided for communications between multiple computing nodes of the virtual computer network by emulating functionality that would be provided by the virtual networking devices if they were physically present.

Abstract: Systems and methods for increasing the efficiency of vehicle platooning systems are described. In one aspect, data associated with two or more vehicles is received by a system. The data received by the system may indicate where two or more vehicles may rendezvous such that they can platoon. In some examples, a rendezvous location may be determined based on the time it would take the vehicles to arrive at the location and/or the amount of fuel that would be spent if the vehicles were to travel out of their way to arrive at the location. Example user interfaces are described that include maps indicating where a rendezvous location is, and which may include information about where other vehicle(s) are that are also traveling to the rendezvous location.

Abstract: Disclosed herein is an apparatus that includes a first circuit that activates first and second timing signals in response to a first command and activates the second timing signal in response to a second command, a second circuit that amplifies a first data read out from a first memory area in response to the first command in synchronization with the first timing signal, and a third circuit that outputs one of the first data output from the second circuit and a second data read out from a second memory area in response to the second command, in synchronization with the second timing signal.

Abstract: A device for removing a urinary tract stone from a ureter may include an outer shaft, an inner shaft extending coaxially within the outer shaft, a self-expanding wire basket attached to a basket shaft extending coaxially within the inner shaft, an inflatable balloon and a handle. The balloon main include a rounded distal tip. The handle may include an inversion slider coupled to the inner shaft and configured to actuate the inner shaft, thereby inverting the distal tip of the inflatable balloon to form a pocket adapted to receive a urinary tract stone. The handle may also include a basket slider coupled to the basket shaft and configured to actuate the basket shaft to move the wire basket in and out of the inner shaft.

Abstract: Methods and apparatus are provided that select one or more initial subscriber information module (SIM) profile via a mobile device. Multiple SIM profiles including a first SIM profile and a second SIM profile can be stored on a SIM card for the mobile device. The mobile device may attempt to connect to a first network via the first SIM profile. In response to a failure to connect to the first network according to the first SIM profile, the mobile device can access the second SIM profile to connect to a second network according to the second SIM profile. In an embodiment, sequential accessing of SIM profiles stored on the SIM card continues until the mobile device is successfully connected to a network.

Abstract: An electromagnetic apparatus includes a non-magnetic body structure above a substrate. The electromagnetic apparatus further includes at least one isolation structure including a dielectric material on a portion of the body structure and a magnetic structure having two separate portions, one on each side of the isolation structure. A first magnetic structure portion is on a first sidewall of the isolation structure on an upper surface and on a first sidewall of the body structure and a second magnetic structure portion is on an opposite second sidewall of the isolation structure onto an upper surface and on to a second sidewall of the body structure. The electromagnetic apparatus further includes an electromagnet on a side opposite to the isolation structure. The electromagnet is coupled with the magnetic structure and is a source of the magnetic flux lines when energized.

Abstract: Disclosed herein is an apparatus that includes a first wiring layer including a first power line extending in a first direction, a second wiring layer including second and third power lines extending in a second direction, a third wiring layer including power electrode patterns arranged in the second direction, and a fourth wiring layer including a fourth power line extending in the second direction. The first and second power lines are connected by a first via electrode. The first and third power lines are connected by a second via electrode. The second power line and each of the power electrode patterns are connected by a third via electrode. The third power line and each of the power electrode patterns are connected by a fourth via electrode. The fourth power line and each of the power electrode patterns are connected by a fifth via electrode.

Abstract: Methods, systems, and computer-readable media for interaction monitoring for virtualized graphics processing are disclosed. Execution of an application is initiated on a virtual compute instance that is implemented using CPU and memory resources of a server. Instruction calls are produced by the execution of the application and sent from the server to a graphics server over a network. The graphics server comprises a physical GPU, and a virtual GPU is implemented using the physical GPU and attached to the virtual compute instance. GPU output is generated at the graphics server based at least in part on execution of the instruction calls using the virtual GPU. A log of interactions between the application and the virtual GPU is stored. The interactions comprise the instruction calls sent to the graphics server and responses to the instruction calls sent to the virtual compute instance.

Abstract: A method for monitoring devices based at least in part on detected conditions includes accumulating, by one or more sensory nodes, sensed information in an area that includes a controllable device. The method also includes analyzing the sensed information to identify historical information regarding the area that includes the controllable device. The method also includes sensing a condition within the area by the one or more sensory nodes. The method also includes determining, based at least in part on the sensed condition and at least in part on the historical information, that the sensed condition relates to the controllable device. The method further includes generating, responsive to said determining, an alert regarding the controllable device.

Abstract: Apparatuses and methods for error correction coding and data bus inversion for semiconductor memories are described. An example apparatus includes an I/O circuit configured to receive first data and first ECC data associated with the first data, a memory array, and a control circuit. The control circuit is coupled between the I/O circuit and the memory array. The control circuit is configured to execute first ECC-decoding to produce corrected first data and corrected first ECC data responsive, at least in part, to the first data and the first ECC data. The control circuit is further configured to store both the corrected first data and the corrected first ECC data into the memory array.