Abstract: The present disclosure provides methods and systems for image reconstruction. The methods may include: obtaining background coincidence event data and target coincidence event data, the background coincidence event data being related to a first plurality of background coincidence events, the target coincidence event data being related to a target object; obtaining a target normalization correction factor; correcting the target coincidence event data based on the target normalization correction factor; and generating a target image by performing image reconstruction based on the background coincidence event data and the corrected target coincidence event data.

Abstract: This application provides a method and apparatus for recommending a media sharing room, an electronic device, a computer-readable storage medium, and a computer program product. The method includes determining, in response to a request to join a media sharing room by a target object, a recommended area associated with a to-be-recommended media sharing room; generating a first Bloom filter array corresponding to a location of the recommended area, and transmitting the first Bloom filter array to a terminal of the target object; receiving, from the terminal, a result indicating whether the target object is located in the recommended area, the result being determined based on the first Bloom filter array and a second Bloom filter array, and the second Bloom filter array corresponding to a location of the target object; and recommending the media sharing room when the result indicates that the target object is located in the recommended area.

Abstract: An electronic device, a touch detection circuit and an update method for a reference value of a touch screen are provided. The update method includes: acquiring a temperature value of an environment of the touch screen; when determining that the acquired temperature value is less than a preset temperature threshold and determining that a continuously touched area exists in the touch screen, collecting N data frames of the continuously touched area; calculating N feature values of the N data frames; and updating N reference values corresponding to the N data frames according to the N feature values; wherein, N is greater than 1 and N is an integer. A difference between a reference value and a sensed value of the continuously touched area may not be decreased with a temperature rise due to the heat transferred by a touched object, thus point elimination at a low temperature is avoided.

Abstract: A mass balance is determined for periodic final inlet component flow rates entering Gas Oil Separation Plants (GOSPs). For transfers between GOSPs, constraints are calculated based on capacities of pipelines and a single direction of transfer. Calculated final inlet component flow rates are maintained for each GOSP within the calculated maximum and minimum GOSP pipeline capacities. Raw materials and intermediate and final states are formulated. Consumed power is calculated in in linear form using known flow rates per equipment. Investment decisions are performed with respect to swing pipelines and new equipment and a final net present value (NPV) is calculated with an overall objective function.

Abstract: A method and apparatus for determining a reference value of a touch screen, and an electronic terminal thereof are provided. The method includes: determining a candidate reference value of a touch screen according to an original reference value and a reference fitting relationship of the touch screen, wherein the reference fitting relationship is determined according to the original reference value of the touch screen and a capacitance value of a capacitor node on the touch screen in a first frame; correcting the candidate reference value; and determining a stable reference value of the touch screen according to the corrected candidate reference value. According to embodiments of the present disclosure, the candidate reference value is closer to the actual capacitance reference, such that accuracy of the determined stable reference value is ensured as much as possible.

Abstract: A mass balance is determined for periodic final inlet component flow rates entering Gas Oil Separation Plants (GOSPs). For transfers between GOSPs, constraints are calculated based on capacities of pipelines and a single direction of transfer. Calculated final inlet component flow rates are maintained for each GOSP within the calculated maximum and minimum GOSP pipeline capacities. Raw materials and intermediate and final states are formulated. Consumed power is calculated in in linear form using known flow rates per equipment. Investment decisions are performed with respect to swing pipelines and new equipment and a final net present value (NPV) is calculated with an overall objective function.

Abstract: A method and apparatus for determining a reference value of a touch screen, and an electronic terminal thereof are provided. The method includes: determining a candidate reference value of a touch screen according to an original reference value and a reference fitting relationship of the touch screen, wherein the reference fitting relationship is determined according to the original reference value of the touch screen and a capacitance value of a capacitor node on the touch screen in a first frame; correcting the candidate reference value; and determining a stable reference value of the touch screen according to the corrected candidate reference value. According to embodiments of the present disclosure, the candidate reference value is closer to the actual capacitance reference, such that accuracy of the determined stable reference value is ensured as much as possible.

Abstract: A method and apparatus for updating a current reference value of a touch screen, a touch screen and an electronic terminal thereof are provided. The method includes: obtaining a current original value of a sampling node on the touch screen; determining a fitting original value of the sampling node according to a fitting relationship between a backup reference value and the current original value; calculating a fitting residual value between the fitting original value and the current original value; and judging whether a trigger condition for reference value update is satisfied according to the fitting residual value, and updating the current reference value if the trigger condition for reference value update is satisfied.

Abstract: An electronic device, a touch detection circuit and an update method for a reference value of a touch screen are provided. The update method includes: acquiring a temperature value of an environment of the touch screen; when determining that the acquired temperature value is less than a preset temperature threshold and determining that a continuously touched area exists in the touch screen, collecting N data frames of the continuously touched area; calculating N feature values of the N data frames; and updating N reference values corresponding to the N data frames according to the N feature values; wherein, N is greater than 1 and N is an integer. A difference between a reference value and a sensed value of the continuously touched area may not be decreased with a temperature rise due to the heat transferred by a touched object, thus point elimination at a low temperature is avoided.