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41075 results about "Computational physics" patented technology

Computational physics is the study and implementation of numerical analysis to solve problems in physics for which a quantitative theory already exists. Historically, computational physics was the first application of modern computers in science, and is now a subset of computational science.

Method to determine optical proximity correction and assist feature rules which account for variations in mask dimensions

Optical proximity correction (OPC) and assist feature rules are generated using a process window (PW) analysis. A reference pitch is chosen and the mask bias is found that optimizes the process window. This can be done using standard process window analysis or through a weighted process window (WPW) analysis which accounts for focus and dose distributions that are expected in a real process. The WPW analysis gives not only the optimum mask bias, but also the center focus and dose conditions for the optimum process centering. A series of other pitches and mask biases are then analyzed by finding the common process window with the reference pitch. For the standard PW analysis, a common process window is found. For the WPW analysis, the WPW is computed at the center focus and dose conditions found for the reference pitch. If mask or lens errors are to be accounted for, then multiple structures can be included in the analysis. Once the common process windows for the mask features of interest have been computed, functional fits to the data can be found. Once the functional forms have been found for each of the OPC parameters, the rules table can be determined by solving for the spacings of interest in the design.

Systems and Methods for Providing Maximum Photovoltaic Peak Power Tracking

A micropower Maximum Power Point Tracker (μMPPT) suitable for use in low power applications to maximize the power output for a solar-power cell array. In one embodiment, a μMPPT comprises an electrical circuit which includes a microprocessor / microcontroller used to execute the μMPPT control algorithm, and a modulator controller to control the pulse width or frequency to a high speed switch. In addition, the electrical circuit may include an analog-to-digital (A / D) converter usable to measure the input voltage from a connected solar array, the current through an inductor of the circuit, and the voltage of an attached energy store / load. In another embodiment, the μMPPT may operates in at least two modes depending on the energy store / loads conditions.

Advanced analyte sensor calibration and error detection

Systems and methods for processing sensor data and self-calibration are provided. In some embodiments, systems and methods are provided which are capable of calibrating a continuous analyte sensor based on an initial sensitivity, and then continuously performing self-calibration without using, or with reduced use of, reference measurements. In certain embodiments, a sensitivity of the analyte sensor is determined by applying an estimative algorithm that is a function of certain parameters. Also described herein are systems and methods for determining a property of an analyte sensor using a stimulus signal. The sensor property can be used to compensate sensor data for sensitivity drift, or determine another property associated with the sensor, such as temperature, sensor membrane damage, moisture ingress in sensor electronics, and scaling factors.
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