Abstract: A method for sensor operation includes deploying a network of sensors, which have respective clocks that are not mutually synchronized. At least a group of the sensors receive respective signals emitted from each of a plurality of sources, and record respective times of arrival of the signals at the sensors according to the respective clocks. Location information is provided, including respective sensor locations of the sensors. The respective clocks are synchronized based on the recorded times of arrival and on the location information. In the process the sources may be localized, or if the sources are far away, then their directions may be resolved. Sensor positions may also be resolved in the process.

Abstract: Provided herein are zero carbon dioxide (CO2) emission processes and systems to carry out the processes, comprising a) calcining limestone in a cement plant in an electric kiln to form a mixture comprising calcium oxide and a first gaseous stream comprising clean carbon dioxide, wherein the clean carbon dioxide comprises no gaseous or non-gaseous components from combustion of fuel; b) treating the mixture comprising calcium oxide with a N-containing salt solution under one or more dissolution conditions to produce a first aqueous solution comprising calcium salt; and c) contacting the first aqueous solution with the first gaseous stream comprising clean carbon dioxide under one or more precipitation conditions to produce a precipitation material comprising vaterite, aragonite, calcite, or combinations thereof.

Abstract: Systems and methods for material handling vehicle simulation are provided. In one aspect, a method for material handling vehicle simulation using a material handling vehicle includes connecting a simulation controller to a simulation port, providing an input to a soft switch on a touch screen, upon providing the input to the soft switch on the touch screen, triggering the material handing vehicle to transition from the standard mode to the simulation mode, and projecting a simulated environment onto a simulation display. The simulated environment is configured to simulate operation of the material handling vehicle on the simulation display.

Abstract: A method for sensor operation includes deploying a network of sensors (22), which have respective clocks (36) that are not mutually synchronized. At least a group of the sensors receive respective signals emitted from each of a plurality of sources (24, 26), and record respective times of arrival of the signals at the sensors according to the respective clocks. Location information is provided, including respective sensor locations of the sensors. The respective clocks are synchronized based on the recorded times of arrival and on the location information. In the process the sources may be localized, or if the sources are far away, then their directions may be resolved. Sensor positions may also be resolved in the process.

Abstract: There are provided methods and systems for an electrochemical cell including an anode and a cathode where the anode is contacted with a metal ion that converts the metal ion from a lower oxidation state to a higher oxidation state. The metal ion in the higher oxidation state is reacted with hydrogen gas, an unsaturated hydrocarbon, and/or a saturated hydrocarbon to form products.

Abstract: Provided herein are methods and systems to form calcium carbonate comprising vaterite, comprising dissolving limestone in an aqueous base solution under one or more precipitation conditions to produce a precipitation material comprising calcium carbonate and a supernatant solution, wherein the calcium carbonate comprises vaterite.

Abstract: Provided herein are methods and systems to form calcium carbonate comprising vaterite, comprising dissolving lime in an aqueous base solution under one or more precipitation conditions to produce a precipitation material comprising calcium carbonate and a supernatant solution, wherein the calcium carbonate comprises vaterite.

Abstract: Systems and methods for material handling vehicle simulation are provided. In one aspect, a material handling vehicle simulation system includes a material handling vehicle having a plurality of controls operable to manipulate the material handling vehicle to perform a desired operation, and a vehicle controller configured to selectively transition between a standard mode where the vehicle controller is configured to instruct the vehicle to perform standard operating tasks and a simulation mode. The material handling simulation system further includes a simulation kit having a simulation display, and a simulation controller in communication with the plurality of controls and the simulation display. When the vehicle controller is in the simulation mode, the simulation controller is configured to simulate operation of the material handling vehicle on the simulation display in response to manipulation of at least one of the plurality of controls.

Abstract: Disclosed herein are methods and systems that relate to various configurations of electrochemical, bromination, oxybromination, bromine oxidation, hydrolysis, neutralization, and epoxidation reactions to form propylene bromohydrin, propanal, and propylene oxide or to form bromoethanol, bromoacetaldehyde, and ethylene oxide.

Abstract: Systems and methods for material handling vehicle task classification are provided. A method for task characterization on a material handling vehicle comprises monitoring data communicated between one or more on-board sensors and a vehicle controller on the material handling vehicle. The method further comprises identifying a repletion or pattern in the monitored data, and determining that the repetition or pattern in the monitored data is a vehicle task. The method also comprises modifying an operational parameter of the material handling vehicle based on the determined vehicle task.

Abstract: Provided herein are methods comprising a) calcining limestone in a cement plant to form carbon dioxide and calcium compound selected from calcium oxide, calcium hydroxide, or combination thereof; b) treating the calcium compound with N-containing salt in water to produce an aqueous solution comprising calcium salt and N-containing salt; and c) contacting the aqueous solution with the carbon dioxide under one or more precipitation conditions to produce a precipitation material comprising calcium carbonate and a supernatant aqueous solution wherein the calcium carbonate comprises vaterite.

Abstract: Disclosed herein are methods and systems that relate to electrochemically oxidizing metal halide with a metal ion in a lower oxidation state to a higher oxidation state; halogenating an unsaturated hydrocarbon or a saturated hydrocarbon with the metal halide with the metal ion in the higher oxidation state; and oxyhalogenating the metal halide with the metal ion from a lower oxidation state to a higher oxidation state in presence of an oxidant. In some embodiments, the oxyhalogenation is in series with the electrochemical oxidation, the electrochemical oxidation is in series with the oxyhalogenation, the oxyhalogenation is parallel to the electrochemical oxidation, and/or the oxyhalogenation is simultaneous with the halogenation.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for generating dependency parses for input text segments, which may be provided as inputs to a natural language processing system. One of the systems includes a first neural network comprising: one or more initial neural network layers configured to, for each token in an input text sequence: receive features for the token; and collectively process the features to generate an alternative representation of the features for use in determining a part of speech of the token in the input text sequence; and a dependency parsing neural network configured to: process the alternative representations of the features for the tokens in the input text sequence generated by the one or more initial neural network layers to generate a dependency parse of the input text sequence.

Abstract: Disclosed herein are methods and systems that relate to electrochemically oxidizing metal halide with a metal ion in a lower oxidation state to a higher oxidation state; halogenating an unsaturated hydrocarbon or a saturated hydrocarbon with the metal halide with the metal ion in the higher oxidation state; and oxyhalogenating the metal halide with the metal ion from a lower oxidation state to a higher oxidation state in presence of an oxidant. In some embodiments, the oxyhalogenation is in series with the electrochemical oxidation, the electrochemical oxidation is in series with the oxyhalogenation, the oxyhalogenation is parallel to the electrochemical oxidation, and/or the oxyhalogenation is simultaneous with the halogenation.

Abstract: There are provided methods and systems to form propylene chlorohydrin by hydrolysis of dichloropropane in presence of Lewis acid and to further form propylene oxide from the propylene chlorohydrin.

Abstract: Disclosed herein are methods and systems that relate to various configurations of electrochemical oxidation, chlorine oxidation, oxychlorination, chlorination, and epoxidation reactions to form propylene oxide or ethylene oxide.

Abstract: There are provided methods and systems to form propylene chlorohydrin by hydrolysis of dichloropropane in presence of Lewis acid and to further form propylene oxide from the propylene chlorohydrin.

Abstract: Disclosed herein are methods and systems that relate to various configurations of electrochemical oxidation, chlorine oxidation, oxychlorination, chlorination, and epoxidation reactions to form propylene oxide or ethylene oxide.

Abstract: There are provided methods and systems to form propylene chlorohydrin by hydrolysis of dichloropropane in presence of Lewis acid and to further form propylene oxide from the propylene chlorohydrin.

Abstract: A protection system, method, and a security device can protect an operational technology (OT) system having connected hardware equipment, including at least an interface that can receive a control communication and an industrial control device (ICD) for controlling at least one industrial device. They feature tasks/steps that receive control communication from the communication interface, determine whether the received control communication contains an undesirable control command, and either pass or block the received control communication to the ICD depending on whether the received control communication contains an undesirable control command. The security device can be disposed between a source of communication in an OT network and the ICD for protection.