Abstract: A precursor material, a method for preparing the precursor material, a positive electrode material, a method for preparing the positive electrode material, a positive electrode plate, a battery, and an electric apparatus. The precursor material includes a compound MnxFeyM(1-x-y)HPO4·nH2O, where 0.9?x+y<1, 0<x?0.9, 0<y?0.9, 0?n?6, and M includes one or more of transition metal elements other than manganese and iron, Group IIA metal elements, Group IIIA metal elements, and Group IVA metal elements. The precursor material has a uniform distribution of elements and good batch consistency, and a prepared positive electrode material has a uniform distribution of elements and good batch consistency, improving the specific capacity and cycling performance of a battery.

Abstract: A fluid sensor assembly including a fluid sensor, an antenna, and a processor in wireless communication with the fluid sensor assembly and comprising a reader. The fluid sensor can be positioned along a fluid flow line. The fluid sensor can be configured to output one or more output signals indicative of one or more properties of the fluid flowing through the fluid sensor. The antenna of the fluid sensor assembly is configured to transmit the output signals to the reader of the processor; and the processor is configured to process the signals received by the reader.

Abstract: The disclosed computer-implemented method for detecting user incapacitated states for securing a mobile device against unintended use may include (i) monitoring sensor data generated for a current user of the mobile device, (ii) detecting, based on the sensor data, an incapacitated state associated with the current user, and (iii) performing a security action that protects against unintended use of the mobile device by disabling access to device functionality when the current user is in the incapacitated state. Various other methods, systems, and computer-readable media are also disclosed.

Abstract: Systems and methods for protecting private information during large language module (LLM) interactions. In one embodiment, an LLM gateway may route user prompts through a client server that possesses its own access credentials to an LLM server. The access credentials of the client server may be separate from and unassociated with the user. The client server may access the LLM using its own access credentials, submit the user's prompt to the LLM server, and return the results to the user. Routing user prompts through a client server that possesses its own LLM access credentials may help to ensure that user prompts cannot be traced back to the user or to personal information that a user disclosed in order to gain access to an LLM server.

Abstract: A directional tool for coiled tubing drilling has an electronic control module; a hydraulic driving module having a motor in signal connection with the electronic control module, an oil bladder unit arranged between the electronic control module and the motor, a bidirectional hydraulic pump connected to the motor, and a piston a first liquid cavity and a second liquid cavity in communication with the bidirectional hydraulic pump being formed at both ends of the piston, respectively; and a mechanical transmission module, with both ends thereof connected to the piston and a downhole drilling tool, respectively. The electronic control module is configured to transmit the ground control command to the hydraulic driving module, so that the motor drives the bidirectional hydraulic pump to generate high-pressure oil and low-pressure oil in the first liquid cavity and the second liquid cavity alternately, thus driving the piston to perform axial movement reciprocally.

Abstract: In certain examples, methods and semiconductor structures are directed to circuit-based apparatus in which an amplifier includes stacked, first and second circuit amplification stages to operate out of phase from one another for providing a push-pull operation, with each of the first and second circuit stages including a switching circuit and an impedance path to drive the switching circuit. The apparatus further includes a waveform-shaping circuit to shape, in response to each of the first and second circuit stages, a voltage signal for presentation to the switching circuit. As may be implemented in various more-specific examples, the apparatus may generate a constant output voltage with high efficiency across a wide range of resistive loads.

Abstract: A third-party attempting to call a user is identified and authenticated by collecting multi-dimensional user data and user activity into a personalized large language model (LLM) residing on a user device. A general-purpose LLM generates third-party authentication questions based on an initial intent of the caller and the questions are provided to the personalized LLM with the answers from the personalized LLM ranked based on relevancy and accuracy. One or more of the highest ranked questions are prompted to the caller and the answers provided by the caller are compared to the answers provided by the personalized LLM to determine if the caller is a trusted contact or a likely malicious third-party.

Abstract: A system and method enables receiving by a computer system a plurality of identifiers respectively corresponding to a plurality of transaction fulfillment systems. A plurality of network locations are scanned to determine a plurality of transaction protocols respectively corresponding to the plurality of transaction fulfillment systems. One or more electronic transactions between a user and one or more of the plurality of transaction fulfillment systems are determined respectively based on one or more of the plurality of identifiers. The computer system detects an electronic transaction request. A particular identifier of the plurality of identifiers is determined based on the plurality of transaction protocols and the one or more electronic transactions, and the computer system initiates a first electronic transaction with a particular transaction fulfillment system of the plurality of transaction fulfillment systems based on the particular identifier to fulfill the electronic transaction request.

Abstract: A method includes placing a first wafer carrier on a first wafer carrier support base of an automated mechanism platform apparatus, the first wafer carrier accommodating a plurality of wafers; grapping the wafers from the first wafer carrier by a gripper of the automated mechanism platform apparatus; moving the wafers from the gripper to a second wafer carrier placing on a second wafer carrier support base of the automated mechanism platform apparatus; grapping the second wafer carrier with the wafers from the second wafer carrier support base by the gripper; transferring the second wafer carrier with the wafers from the gripper to a processing apparatus.

Abstract: A computer user is authenticated by collecting user data from at least two dimensions of user activity into a local large language model (LLM) residing on a user device, and generating user authentication questions from at least those two dimensions of user activity using the large language model. Questions having intersecting time or location are discarded, and questions from two or more dimensions are presented to the user for response. The user is authenticated by comparing the user response to known correct answers to the questions.

Abstract: A code coverage rate determining method, comprising: obtaining coverage rate test data to be processed and determining a code branch corresponding to the coverage rate test data to be processed, the coverage rate test data to be processed indicating a coverage rate of a software code corresponding to a first code change record identifier; obtaining historical coverage rate test data corresponding to the code branch, the historical coverage rate test data indicating a coverage rate of a software code corresponding to a second code change record identifier; in case that the first code change record identifier or the second code change record identifier includes a latest code change record identifier corresponding to the code branch, merging first coverage rate test data into second first coverage rate test data in accordance with the position of the first software code in the second software code, to obtain target coverage rate test data.

Abstract: The disclosed computer-implemented method for protecting users may (i) include collecting a set of field reports indicating respective geofencing violations, (ii) grading a safety measurement, based on an analysis of the respective geofencing violations, for each candidate route in a set of multiple candidate routes generated for travel between a starting point and a destination point, and (iii) recommending, from among the set of multiple candidate routes, a recommended route based at least in part on the recommended route being graded as safer than another candidate route. Various other methods, systems, and computer-readable media are also disclosed.

Abstract: In certain examples, the disclosure involves or is directed to a circuit-based apparatus that has a T-network, and a plurality of circuit paths with a first path having a first switching node to respond to an RF input signal that is characterized by a first phase, and with a second path having a second switching node to respond to the RF input signal characterized by a second phase that is different than the first phase. The circuit paths may be configured as a push-pull amplification circuit. The T-network may be arranged between the first and second switching nodes and may include a variable impedance circuit. The variable impedance circuit may be adjusted, in accordance with a selected frequency of the RF input signal. The T-network may be characterized by a resonance frequency shunts a second harmonic current associated with the resonance frequency, thereby permitting for use of different selected frequencies.

Abstract: A downhole blowout preventer has a blowout preventer tubing string containing a circulation unit, a packer unit and a pressure-building unit connected in sequence from top to bottom. The pressure-building unit is configured to be activated in response to a command, so as to build up pressure in a space inside the blowout preventer tubing string. The packer unit is configured to be activated when a pressure in said space reaches a first predetermined value, so as to seal an annulus between said blowout preventer tubing string and an external casing or borehole. The circulation unit is configured to be activated when the pressure in said space reaches a second predetermined value, thereby creating a circulation path between an interior and an exterior of the blowout preventer tubing string. The first predetermined value is less than the second predetermined value.

Abstract: Methods and systems for efficient scaling of a domain name system (DNS) service architecture. In some embodiments a plurality of messaging servers may be separated into a number of pools. A plurality of client devices may be connected to a messaging server within a pool. When a notification is received for a target client device, a backend server may identify the pool that includes the messaging server that is connected to the target client device. The backend server may send the notification to the group of messaging servers within the identified pool while avoiding sending the notification to messaging servers within different pools.

Abstract: A downhole blowout preventer has a blowout preventer tubing string containing a circulation unit, a packer unit and a pressure-building unit connected in sequence from top to bottom. The pressure-building unit is configured to be activated in response to a command, so as to build up pressure in a space inside the blowout preventer tubing string. The packer unit is configured to be activated when a pressure in said space reaches a first predetermined value, so as to seal an annulus between said blowout preventer tubing string and an external casing or borehole. The circulation unit is configured to be activated when the pressure in said space reaches a second predetermined value, thereby creating a circulation path between an interior and an exterior of the blowout preventer tubing string. The first predetermined value is less than the second predetermined value.

Abstract: An apparatus including direct-current (DC)-alternating-current (AC) inverter circuitry, first and second circuits, and output circuitry. The DC-AC inverter circuitry inverts a DC input signal corresponding to an input voltage to an AC signal. The first circuit and second circuits respectively include inductive isolation circuits driven in response to power from the at least one AC signal, and rectifier circuits that responds to the inductive isolation circuits by outputting first and second rectified signals, where at least one of the first and second rectifier circuits characterized as being limited by a voltage breakdown rating. The output circuitry provides a DC output voltage signal and to cascade a plurality of signals, including the first and second rectified signals, to provide a voltage source that is dependent on the first and second rectified signals and greater than voltage breakdown rating.

Abstract: A computer-implemented method for selectively monitoring devices may include (i) identifying a set of characteristics of a device-usage session of a device, (ii) calculating, based on the set of characteristics, a privacy score for the device-usage session, (iii) selecting, for the device, a device monitoring profile that is correlated with the privacy score and that defines an intensity level of monitoring actions to be performed on the device, and (iv) monitoring activity performed on the device during the device-usage session in accordance with the device monitoring profile that is correlated with the privacy score for the device-usage session. Various other methods, systems, and computer-readable media are also disclosed.

Abstract: In certain examples, methods and semiconductor structures are directed to circuit-based apparatus in which an amplifier includes stacked, first and second circuit amplification stages to operate out of phase from one another for providing a push-pull operation, with each of the first and second circuit stages including a switching circuit and an impedance path to drive the switching circuit. The apparatus further includes a waveform-shaping circuit to shape, in response to each of the first and second circuit stages, a voltage signal for presentation to the switching circuit. As may be implemented in various more-specific examples, the apparatus may generate a constant output voltage with high efficiency across a wide range of resistive loads.