Abstract:
Provided is a process of calibrating a model, the process including: obtaining training data including: scattered radiation information from a plurality of structures, individual portions of the scattered radiation information being associated with respective process conditions being characteristics of a patterning process of the individual structures; and calibrating, using one or more processors, a model with the training data by determining a first ratio relating a change in one of the process characteristics to a corresponding change in scattered radiation information.
Abstract:
Systems and methods of the present invention provide a calibration model that requires minimal information compared with prior techniques. These systems and methods represent the first generalized approach for combined treatment of spectroscopic measurements of a dynamic, mass-transfer system with the underlying kinetic model of said system. The technique can be applied to non-invasive glucose monitoring or monitoring of chemical reaction dynamics.
Abstract:
Vorrichtung und Verfahren zur Trübungsmessung eines partikelbeladenen Abgasstroms, insbesondere Opazimeter, umfassend eine sich entlang einer Messachse (2) erstreckende Messkammer (3), die zur Trübungsmessung von dem Abgasstrom gefüllt und durchströmt ist, einen außerhalb der Messkammer (3) angeordneten Strahlungsdetektor (4), eine außerhalb der Messkammer (3) angeordnete Strahlungsquelle (5), deren Messstrahlung entlang der Messachse (2) durch eine innere Messstrahlöffnung (7) in die Messkammer (3) eintritt, den Abgasstrom in der Messkammer (3) mindestens einmal durchsetzt, durch eine innere Messstrahlöffnung (7) wieder aus der Messkammer (3) austritt und durch den partikelbeladenen Abgasstrom abgeschwächt auf den Strahlungsdetektor (4) trifft, wobei beabstandet von der Messachse (2) ein Driftdetektor (23) vorgesehen ist, der insbesondere als Kalibrierstrahlungsdetektor ausgebildet ist.
Abstract:
A laser spectrometer can be operated for analysis of one or more analytes present in a combustible gas mixture. The spectrometer can include one or more features that enable intrinsically safe operation. In other words, electrical, electronic, thermal, and/or optical energy sources can be limited within an hazardous area of the spectrometer where it is possible for an explosive gas mixture to exist.
Abstract:
In one exemplary embodiment, a method for calibrating an instrument is provided. The instrument includes an optical system capable of imaging florescence emission from a plurality of reaction sites. The method includes performing a region-of-interest (ROI) calibration to determine reaction site positions in an image. The method further includes performing a pure dye calibration to determine the contribution of a fluorescent dye used in each reaction site by comparing a raw spectrum of the fluorescent dye to a pure spectrum calibration data of the fluorescent dye. The method further includes performing an instrument normalization calibration to determine a filter normalization factor. The method includes performing an RNase P validation to validate the instrument is capable of distinguishing between two different quantities of sample.
Abstract:
The method of determining a variable of interest associated with a sample having a quantity of organisms received in a container, the method comprising the steps of: acquiring, from a camera, an image the sample in the container; and determining a value of the variable of interest associated with the sample using the image.
Abstract:
A reference harmonic absorption curve of a laser absorption spectrometer can have a reference curve shape derived from a reference signal generated by the detector in response to light passing from the laser light source through a reference gas or gas mixture. The reference gas or gas mixture can include one or more of a target analyte and a background gas expected to be present during analysis of the target analyte. One or more portions of a test harmonic absorption curve having a test curve shape is compared with one or more portions of the reference harmonic absorption curve arising due to absorption of the background gases and not by absorption of the target analyte. Operating and/or analytical parameters of the laser absorption spectrometer are adjusted to correct the test curve shape to reduce the difference between the test curve shape and the reference curve shape.
Abstract:
Die Anmeldung offenbart ein Verfahren (200) zum Ermitteln eines Kohlendioxidgehaltes einer Umgebungsluft (130). Das Verfahren (200) umfasst einen Schritt des Bereitstellens (210) eines mobilen Datenübertragungsgerätes (110), das einen Sensor (120) zur Erfassung von Kohlendioxid in einer Umgebungsluft (130) aufweist, und einen Schritt des Kalibrierens (215) des Sensors (120), wobei der Schritt des Kalibrierens (215) als ein Messen eines Kohlendioxidgehaltes der Umgebungsluft (130) in einer Referenzsituation (300) erfolgt. Ferner umfasst das Verfahren (200) einen Schritt des Messens (220) eines Kohlendioxidgehalts der Umgebungsluft (130) unter Verwendung des Sensors (120).
Abstract:
Methods and systems for sensor calibration and sensor glucose (SG) fusion are used advantageously to improve the accuracy and reliability of orthogonally redundant glucose sensor devices, which may include optical and electrochemical glucose sensors. Calibration for both sensors may be achieved via fixed-offset and/or dynamic regression methodologies, depending, e.g., on sensor stability and Isig-Ratio pair correlation. For SG fusion, respective integrity checks may be performed for SG values from the optical and electrochemical sensors, and the SG values calibrated if the integrity checks are passed. Integrity checks may include checking for sensitivity loss, noise, and drift. If the integrity checks are failed, in-line sensor mapping between the electrochemical and optical sensors may be performed prior to calibration. The electrochemical and optical SG values may be weighted (as a function of the respective sensor's overall reliability index (RI)) and the weighted SGs combined to obtain a single, fused SG value.