Abstract: A system usable in a wellbore can include a processing device and a memory device in which instructions executable by the processing device are stored for causing the processing device to: generate multiple predicted values of a first parameter associated with a well environment or a wellbore operation; determine a first trend indicated by the multiple predicted values; receive, from a sensor, multiple measured values of a second parameter associated with the well environment or the wellbore operation; determine a second trend indicated by the multiple measured values; determine a difference between the first trend and the second trend or a rate of change of the difference; and in response to the difference exceeding a threshold or the rate of change exceeding another threshold, determine a source of the difference including at least one of an erroneous user input, an equipment failure, a wellbore event, or a model error.

Abstract: A controller for a building system receives training data including input data and output data. The output data indicate a state of the building system affected by the input data. The controller pre-processes the training data using a first set of pre-processing options to generate a first set of training data and pre-processes the training data using a second set of pre-processing options to generate a second set of training data. The controller performs a multi-stage optimization process to identify multiple different sets of model parameters of a dynamic model for the building system. The multi-stage optimization process includes a first stage in which the controller uses the first set of training data to identify a first set of model parameters and a second stage in which the controller uses the second set of training data to identify a second set of model parameters. The controller uses the dynamic model to operate the building system.

Abstract: A method of determining a core design parameter of a nuclear reactor, includes: calibrating an isolated voltage output from a NIS cabinet associated with the nuclear reactor using a calibrated signal source as an input to the NIS cabinet; recording values of the calibrated signal source used in the calibrating and corresponding values of the output voltage from the calibrating in an as-left cabinet calibration data table; using a computing device connected to the isolated voltage output from the NIS cabinet, converting the voltage output signal to a converted detector signal using at least some of the values in the as-left cabinet calibration data table in an improved signal conversion equation; and using the computing device, employing the converted detector signal to determine the core design parameter.

Abstract: A building-information management (BIM) system receives a set of wind vectors that identify wind speeds and directions at the surfaces of physical structures within a volume of air. The system stratifies the volume into vertically stacked layers that each contains similar wind vectors. Each layer is then divided horizontally into rectangular cells that each at least partially encloses a cluster of the structures. The system infers cell-specific relationships that relate physical attributes of the enclosed structures with the cell's incoming and outgoing airflows, from which the system builds a wind-propagation model for each cell. These cell-specific models are combined into a regional wind-propagation model that predicts how winds entering the volume will be propagated as outgoing wind vectors. The regional model is used by downstream modules of the BIM system to account for airflow effects when designing a planned building.

Abstract: The present disclosure describes methods and systems, including computer-implemented methods, computer program products, and computer systems, for models the accumulation and migration of hydrocarbons. One computer-implemented method includes: identifying one of grid cells neighboring an accumulation as a recent back-filled grid cell; setting an oil phase potential of identified grid cell as an accumulation potential of the accumulation; comparing oil phase potentials of grid cells neighboring the recent back-filled grid cell with the accumulation potential of the accumulation, where the oil phase potential of each of the grid cells neighboring the recent back-filled grid cell is stored as a key in the node corresponding to the respective grid cell; selecting one of the grid cells neighboring the accumulation as a next back-filled grid cell; and updating the accumulation potential of the accumulation based on the oil phase potential of the selected grid cell.

Abstract: A method for modelling saturation in a reservoir, comprising: obtaining capillary pressure data representing capillary pressure in the reservoir; obtaining permeability data representing permeability in the reservoir; determining a number of pore throats represented by the capillary pressure data; creating hyperbolic tangents based on the capillary pressure data equal in number to the number of pore throats; combining hyperbolic tangents to create a curve to fit the capillary pressure data and to define hyperbolic tangent parameters; combining at least one of the hyperbolic tangent parameters with the permeability data to define a saturation height function; modelling a saturation in the reservoir using the saturation height function; and displaying the saturation model based on the saturation height function.

Abstract: A method of generating a computer-based observable model of an implantable repair material secured to a patient is provided. The method includes processing data corresponding to a patient using a computing device including a processor and a memory storing a software application executable by the processor. The method also includes indicating an implantable repair material and a fixation for securing the implantable repair material to the patient and indicating a distribution of the fixation about the implantable repair material. The method also includes generating an observable model of the implantable repair material secured to the patient on a display operably associated with the computing device. The observable model depicts the indicated distribution of the fixation about the implantable repair material.

Abstract: A chip package system comprising N multiple processor cores can be tested by receiving a data file characterizing the chip package system. Thereafter, simulation testing is conducted for each core for each of Mi . . . j states using the data file such that each core is active in each state while all other cores are inactive. Each simulation test results in a simulation. The simulations are then combined to result in a composite test covering MN*j combinations. Related apparatus, systems, techniques and articles are also described.

Abstract: Aspects of the present invention relate to an automated cell culture instrument and to methods for operating such an instrument. In one aspect, the cell culture instrument includes a computing unit and a plurality of electrically controllable resources (e.g., sensors, actuators, etc.). The computing unit receives a protocol, schedules the resources so as to execute the protocol, and operates the resources as scheduled or in response to so as to provide an improved environment for cell culture growth. The computing unit may simulate protocol execution in connection with the scheduling or execution of the protocol.

Abstract: A simulation test system for gas extraction from a tectonically-deformed coal seam in-situ by depressurizing a horizontal well cavity. A coal series stratum structure reconstruction and similar material simulation subsystem simulates a tectonically-deformed coal reservoir. A horizontal well drilling and reaming simulation subsystem constructs a U-shaped well in which a horizontal well adjoins a vertical well, and performs a reaming process on a horizontal section thereof. A horizontal well hole-collapse cavity-construction depressurization excitation simulation subsystem performs pressure-pulse excitation and stress release on the horizontal well, and hydraulically displaces a coal-liquid-gas mixture such that the mixture is conveyed towards a vertical well section. A product lifting simulation subsystem further pulverizes the coal and lifts the mixture. A gas-liquid-solid separation simulation subsystem separates the coal, liquid and gas.

Abstract: The present invention extends to methods, systems, and computer program products for evaluating autonomous vehicle algorithms. Aspects use (e.g., supervised) machine learning techniques to analyze performance of autonomous vehicle algorithms on real world and simulated data. Machine learning techniques can be used to identify scenario features that are more likely to influence algorithm performance. Machine learning techniques can also be used to consolidate insights and automate the generation of relevant test cases over multiple iterations to identify error-prone scenarios.

Abstract: A method includes simulating a cutting tool drilling an earth formation by incrementally rotating the cutting tool at a plurality of time intervals, determining a true trajectory of a cutting element disposed on the cutting tool for the duration of the plurality of time intervals, and determining a dynamic work profile for the cutting element based on the true trajectory and a force acting on the cutting element at each time interval.

Abstract: A method includes acquiring trajectory information; based at least in part on a portion of the trajectory information, generating a set of candidate trajectories with associated performance indicator values; rendering a graphical user interface to a display; via the graphical user interface, receiving input that adjusts one of the performance indicator values; and, responsive to the adjustment of the one of the performance indicator values, selecting one of the set of candidate trajectories.

Abstract: The inventive disclosures described herein generally pertain to an improved runtime-calibratable analog-computing system. In many embodiments, the improved analog-computing system comprises at least two analog computers, wherein after initial calibration, the system is designed to stagger the runtime calibration modes of each of the at least two analog-computers such that at least one of the analog computers is always in service, thus preventing any downtime for the overall system. In other words, a system user sees one initial calibration, and computing by the overall system is never interrupted.

Abstract: Aspects of the disclosed technology relate to techniques of improving heat sink designs based on systematic mass removal. A thermal simulation is performed to determine thermal property values for a heat sink design. The thermal property value of a portion of the heat sink design relates to the portion's contribution to thermal performance of the heat sink design. One or more portions of the heat sink design are selected based on the thermal property values and removed to generate a new heat sink design. The performing operation and the removing operation are repeated until one of one or more predetermined conditions is met.

Abstract: A dual gradient cementing system is modeled in a modeled subsea wellbore. The modeled dual gradient cementing system comprises a plurality of components including a mud lift pump (MLP) coupling a subsea rotating device (SRD) to a surface mud return line, wherein the MLP is located at a subsea depth and the SRD diverts annular fluids from an annulus away from a riser. The modeled dual gradient cementing system is simulated in operation, wherein a fluid loss value of 100% at the subsea depth of the MLP is assumed, and a fluid property of a simulated non-static fluid in the simulated dual gradient cementing system while in operation is estimated. Thereafter, an actual dual gradient cementing operation is performed in an actual subsea wellbore, wherein an actual non-static fluid corresponding to the simulated non-static fluid exhibits the fluid property.

Abstract: An example method comprises receiving historical sensor data from sensors of components of wind turbines, training a set of models to predict faults for each component using the historical sensor data, each model of a set having different observation time windows and lead time windows, evaluating each model of a set using standardized metrics, comparing evaluations of each model of a set to select a model with preferred lead time and accuracy, receive current sensor data from the sensors of the components, apply the selected model(s) to the current sensor data to generate a component failure prediction, compare the component failure prediction to a threshold, and generate an alert and report based on the comparison to the threshold.

Abstract: A simulation method for flow field of multi-stage fracturing on horizontal well in tight oil reservoir is provided.

Abstract: A method of preoperative planning comprises creating a virtual model of a native patient tissue; placing a virtual device into a desired device orientation relative to the virtual model of the native patient tissue; specifying at least one structural change to the native patient tissue to facilitate placement of the virtual device in the desired device orientation; creating a virtual model of an altered patient tissue responsive to the specifying at least one structural change to the native patient tissue; and fabricating a tangible representation of a bone using the virtual model of the altered patient tissue.

Abstract: A device may receive data associated with executing a model. The data may be associated with a solver used during execution of the model. The device may determine a presentation order of a plurality of model items based on the data associated with executing the model. The solver may be used to determine values associated with the plurality of model items. The presentation order of the plurality of model items may be determined based on a plurality of factors. The plurality of factors may be associated with the values. The device may generate a graphical interface that indicates the presentation order of the plurality of model items. The device may provide the graphical interface. The graphical interface may provide, for display, a list of the plurality of model items. The list may be provided in association with the presentation order.