Abstract: A signal processor and corresponding method compensate for phase noise in a received digital signal. The signal processor comprises a first stage of a phase noise compensator that computes a phase delay of the received digital signal and generates a partially phase-noise-compensated digital signal by applying to the received digital signal the phase delay computed. The signal processor further comprises a second stage of the phase noise compensator coupled to the first stage. The second stage computes a set of components of the partially phase-noise-compensated digital signal, determines, on a per-component basis, a respective phase distortion for components of the set of components computed, computes a set of corrected components by applying, on the per component basis, the respective phase distortion determined, and generates a further phase-noise-compensated digital signal based on the set of corrected components computed.

Abstract: A zero liquid brine desalination and crystallization system includes a humidification dehumidification (HDH) desalination system and includes a crystallization system. The HDH system includes a humidifier configured to humidify a carrier gas using saline water, and a dehumidifier configured to dehumidify the carrier gas to obtain desalinated water. The crystallization system is configured to receive the saline water from the HDH desalination system and includes an evaporation chamber configured to produce salt crystals and water vapor from the saline water, and a condenser configured to condense the water vapor. Herein, the HDH desalination system and the crystallization system are connected at the condenser for heat exchange between the water vapor and at least one selected from the group consisting of the saline water and the carrier gas.

Abstract: Defining flow control device configurable positions include executing a reservoir simulator on a reservoir model to obtain a collection of flow control device settings defined in continuous space. For each number of multiple numbers of clusters, a cluster analysis is individually performed on the collection to obtain a set of flow control device configurable positions. The set includes the number of flow control device configurable positions and its corresponding inflow area or diameter. Performing the cluster analysis across the numbers generates multiple sets for the multiple numbers of clusters. The sets of flow control device configurable positions are compared to obtain a selected set of flow control device configurable positions, which is presented in a completion design.

Abstract: The present invention provides new apparatus and methods for chromatic dispersion compensation.

Abstract: An IVC filter retrieval device useful for removing an IVC filter from a blood vessel, and useful for removing a tilted IVC filter causing the hook to be embedded in the side (wall) of a blood vessel from the blood vessel, and methods for using the same are described. The IVC retrieval device can be used to retrieve other foreign bodies such as, but not limited to, catheters and wires that may become detached from their devices and released into the blood vessels.

Abstract: A method can include performing a reservoir simulation for injection of carbon dioxide into a reservoir via an injection well: during the performing, accessing a trained machine learning model that outputs hydrate information based on reservoir conditions; and, based on the hydrate information, generating reservoir simulation results that indicate an amount of the carbon dioxide sequestered in the reservoir.

Abstract: A fenestration device for fenestrating an endograft material, a retrievable vessel marker, and methods of using the same are described. The fenestration device includes a needle-like tip with cutting edges configured to make a perforation in an endograft material and blades configured to enlarge the perforation. The retrievable vessel marker includes a wire with a helical portion having four radiopaque markers thereon and blades extendable from the needle-like tip configured to be heated by an external heat source to enlarge the perforation in the endograft material.

Abstract: A pressure ulcer boot includes a boot body formed from a layer of flexible material, an array of selectively inflatable and deflatable air pockets mounted to a portion of the boot body, an air pump in fluid communication with the array of air pockets, and a micro-processor operative to control the air pump to selectively inflate and deflate the air pockets and to apply pressure via the air pockets at regular intervals to increase circulation and relieve pressure in a portion of a patient's body with which the pressure ulcer boot is in contact.

Abstract: A reinforcement learning based approach is used for data cleaning operations that are used in data preparation operations where machine learning (ML) technology is implemented. Features are extracted from a dirty dataset. A batch is sampled from the dirty dataset. A set of one or more repair tools is selected from available repair tools, provided that the sampled batch is determined to include at least one error. The sampled batch is repaired using the selected set of repair tools. The ML model is trained based on the repaired sampled batch. A feedback metric is calculated based on performance of the trained ML model in connection with a validation dataset. The trained ML model is adjusted based on the calculated feedback metric (a loss). The approach is repeated such that the selection of the set of repair tools is modified based on the calculated feedback metric (a reward).

Abstract: Providing high speed Internet access via millimeter wave signal transmissions between a customer premises and a radio access network (RAN) node of a millimeter wave signal wireless data network service provider is described. An external customer premises equipment (CPE) is configured for operation while mounted exterior to a customer premises and configured to operate as a relay node between the RAN node and an internal local communication node within the customer premises. The CPE includes a millimeter wave modem component providing a millimeter wave signal wireless communication link between the CPE and the RAN node, wherein the millimeter wave modem component includes a transmission sub-component operating at a transmission signal power level exceeding a transmission signal power limit for internal power signal transmissions of millimeter wave signals.

Abstract: A method for calibrating a reservoir model includes receiving a reservoir model of a reservoir. The method also includes simulating ensembles of dynamic cases of the reservoir model to produce simulated dynamic cases. Each dynamic case is different. The dynamic cases each include a plurality of levels. The method also includes performing history matching between the simulated dynamic cases and observed production data to identify a combination of parameters of the reservoir model or values of the parameters. The combination of parameters or values of the parameters result in one or more mismatch values between the simulated dynamic cases and the observed production data being less than a mismatch threshold. The method also includes generating a display based upon the combination of the parameters or the values of the parameters that result in the one or more mismatch values being less than the mismatch threshold.

Abstract: A transmitter can include a laser operable to output an optical signal; a digital signal processor operable to receive user data and provide electrical signals based on the data; and a modulator operable to modulate the optical signal to provide optical subcarriers based on the electrical signals. A first one of the subcarriers carriers carries first TDMA encoded information and second TDMA encoded information, such that the first TDMA encoded information is indicative of a first portion of the data and is carried by the first one of the subcarriers during a first time slot, and the second TDMA encoded information is indicative of a second portion of the data and is carried by the first one of the subcarriers during a second time slot. The first TDMA encoded information is associated with a first node remote from the transmitter and the second TDMA encoded information is associated with a second node remote from the transmitter.

Abstract: Providing high speed Internet access via millimeter wave signal transmissions between a customer premises and a radio access network (RAN) node of a millimeter wave signal wireless data network service provider is described. An external customer premises equipment (CPE) is configured for operation while mounted exterior to a customer premises and configured to operate as a relay node between the RAN node and an internal local communication node within the customer premises. The CPE includes a millimeter wave modem component providing a millimeter wave signal wireless communication link between the CPE and the RAN node, wherein the millimeter wave modem component includes a transmission sub-component operating at a transmission signal power level exceeding a transmission signal power limit for internal power signal transmissions of millimeter wave signals.

Abstract: An integrated autonomous operation system that holistically renders the operation in digital form at multiple scales, including reservoir, surface infrastructure, workflows, processes, and the real asset. The system provides an end-to-end digital twin connecting subsurface to production. A subsurface model identifies and monitors water-producing zones for strategic decisions. The models use intelligent AI to provide optimum water injection setpoints. The models provide data to systems that automatically control the chokes and valves to meet the setpoints, thus achieving fully integrated, autonomous operations.

Abstract: An IVC filter retrieval device useful for removing an IVC filter from a blood vessel, and useful for removing a tilted IVC filter causing the hook to be embedded in the side (wall) of a blood vessel from the blood vessel, and methods for using the same are described. The IVC retrieval device can be used to retrieve other foreign bodies such as, but not limited to, catheters and wires that may become detached from their devices and released into the blood vessels.

Abstract: Certain example embodiments relate to automated data preparation techniques usable to improve machine learning (ML) pipelines. Different error detectors are executed on a dirty dataset to identify which records therein include errors. Each record that has been identified by at least a threshold number of the error detectors as including an error is marked as erroneous. The dirty dataset's records are divided into clean and dirty fractions. If a data exclusion error has emerged, the process is repeated. Otherwise, a new set of data samples is generated by applying a variational autoencoder (VAE) to the clean fraction, the dirty dataset is augmented with the new set of data samples, and the augmented dirty dataset is provided for training of the ML model. It thus becomes possible to better training an ML model without having to repair data determined to include errors.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for applying non-linearity to digital subcarriers. A receiver includes a detector circuit operable to receive a first optical signal over an optical link, the first optical signal carrying first data. The receiver includes a carrier recovery estimation circuit operable to generate compensated data by correcting errors in the first data. The receiver includes a non-linear coefficient estimation circuit operable to (i) receive the compensated data, and (ii) estimate one or more non-linear coefficients, wherein information indicative of the estimated non-linear coefficients is transmitted over an optical network, such that a second optical signal is transmitted based, at least in part, on the estimated non-linear coefficients, the second optical signal being received by the receiver.

Abstract: A method includes obtaining a reservoir model for a subsurface reservoir, identifying a current state of the subsurface reservoir using the reservoir model, and a computer processor selecting an optimization function from multiple optimization functions according to the current state of the reservoir to obtain a selected optimization function. The method further includes the computer processor calculating valve positions of physical devices using the selected optimization function. The valve positions are implemented.

Abstract: Techniques are described for implementing an out-of-band communication channel used to exchange control channel information in sub-carrier-based optical communication systems. In an example implementation, an optical communication system includes a primary transceiver, a component, and secondary transceivers. The primary transceiver is operable to supply first optical subcarriers to an optical communication path, the first optical subcarriers being amplitude modulated at a first frequency to carry first control information and amplitude modulated at a second frequency to carry second control information. The component is operable to be coupled to the optical communication path and includes circuitry operable to detect the first control information. The secondary transceivers are coupled to a terminal end of the optical communication path. At least one of the secondary transceivers is operable to detect the second control information and block the first control information.

Abstract: A transmitter can include a laser operable to output an optical signal; a digital signal processor operable to receive user data and provide electrical signals based on the data; and a modulator operable to modulate the optical signal to provide optical subcarriers based on the electrical signals. A first one of the subcarriers carriers carries first TDMA encoded information and second TDMA encoded information, such that the first TDMA encoded information is indicative of a first portion of the data and is carried by the first one of the subcarriers during a first time slot, and the second TDMA encoded information is indicative of a second portion of the data and is carried by the first one of the subcarriers during a second time slot. The first TDMA encoded information is associated with a first node remote from the transmitter and the second TDMA encoded information is associated with a second node remote from the transmitter.