Abstract: Features described herein generally relate to generating and modifying policies with an artificial intelligence (AI) platform based on user activities. Particularly, data comprising characteristics of activities performed by a user in real-world and virtual environments is collected, a control structure is predicted based on the data and model parameters learned from historical policies, and a new policy is generated or a pre-existing policy is modified based on the control structure.

Abstract: The present disclosure relates to refining context aware policies in extended reality systems. In one aspect, an extended reality system is provided that performs operations including: accessing data collected from user interactions while using a context aware policy in an extended reality environment, determining a support set and confidence score for the context aware policy based on the data, generating replacement policies for the context aware policy, determining a support set and confidence score for each of the replacement policies based on the data, identifying a replacement policy from the replacement policies as a replacement for the context aware policy based on the support sets and confidence scores, and updating one or more conditions or an action defined by the context aware policy with a modified version of the one or more conditions or the action defined by the replacement policy to generate an updated context aware policy.

Abstract: Features described herein generally relate to predicting policies with an artificial intelligence (AI) platform based on shared or similar interactions. Particularly, data that includes information about users and a corpus of policies is collected, embeddings are generated for the collected data, and policies are predicted based on the embeddings. The policies can be predicted based on content-based filtering, collaborative filtering, and/or game theory approaches.

Abstract: The present disclosure relates to systems and methods for defining and modifying behavior in an extended reality environment. The systems and methods include receiving a request to build or modify a rule or policy for a given user or activity, obtaining a template based on the user or the activity, displaying the template and tools for editing the template, receiving a modification to the template via the user interacting with the tools of the user interface, and modifying the template based on the modification to generate the rule or policy. The modification includes changing the initial value for the actions or the conditions of the template and saving the template as a separate instance representative of the rule or policy, and the rule or policy includes one or more conditional statements for executing one or more of the actions based on evaluation of one or more of the conditions.

Abstract: A device for measuring volume of spherical tanks, includes a base, four supporting rods, a driving mechanism, a rotating disc and a counterweight mechanism. The base is provided with a first through hole and a circular fixing base with a second through hole. The supporting rods are circumferentially provided on the fixing base, with a sliding rod slidably provided at the lower side. An outer end of the sliding rod is provided with a limiting plate. The driving mechanism can drive the sliding rods to move simultaneously in radial directions. The rotating disc with a third through hole is arranged on the fixing base, and is rotatably provided with a reel around which a steel tape is wound. A free end of the steel tape is provided with a balancing disc whose opposite sides are provided with laser rangefinders. The counterweight mechanism can keep the balancing disc stable.

Abstract: The present disclosure relates to techniques for using interface mechanisms to recover from inaccurate predictions. Particularly, aspects are directed to collecting input data from a user that includes characteristics of activities performed by the user, extracting features from the input data, predicting a recommendation for the user based on the features, generating a user interface comprising one or more graphical user interface elements configured to enable the user to recovery from the recommendation when the recommendation is inaccurate, rendering the recommendation and the user interface on the display, receiving a request from the user via the user interface to recovery from the inaccurate recommendation, where the request includes selection of an option to generate a new recommendation, modify the recommendation, or a combination thereof, generate a response based on the received request from the user, and render the response to the user on the display.

Abstract: Systems and methods for regulating the speed of movement of virtual objects presented by a wearable system are described. The wearable system may present three-dimensional (3D) virtual content that moves, e.g., laterally across the user's field of view and/or in perceived depth from the user. The speed of the movement may follow the profile of an S-curve, with a gradual increase to a maximum speed, and a subsequent gradual decrease in speed until an end point of the movement is reached. The decrease in speed may be more gradual than the increase in speed. This speed curve may be utilized in the movement of virtual objections for eye-tracking calibration. The wearable system may track the position of a virtual object (an eye-tracking target) which moves with a speed following the S-curve. This speed curve allows for rapid movement of the eye-tracking target, while providing a comfortable viewing experience and high accuracy in determining the initial and final positions of the eye as it tracks the target.

Abstract: A wearable device may include a head-mounted display (HMD) for rendering a three-dimensional (3D) virtual object which appears to be located in an ambient environment of a user of the display. The relative positions of the HMD and one or more eyes of the user may not be in desired positions to receive, or register, image information outputted by the HMD. For example, the HMD-to-eye alignment may vary for different users and may change over time (e.g., as a given user moves around or as the HMD slips or otherwise becomes displaced). The wearable device may determine a relative position or alignment between the HMD and the user's eyes by determining whether features of the eye are at certain vertical positions relative to the HMD. Based on the relative positions, the wearable device may determine if it is properly fitted to the user, provide feedback on the quality of the fit to the user, and take actions to reduce or minimize effects of any misalignment.

Abstract: A prediction method for changes of physical parameters after earthquakes includes: obtaining a precipitable water vapor after an earthquake in a target monitoring area during a historical period; verifying the accuracy of the precipitable water vapor collected in the historical period; obtaining thermal anomaly data of the land surface temperature after the earthquake in the target monitoring area during the historical period; determining a time difference between peak of the precipitable water vapor and peak of the thermal anomaly of the land surface temperature; when the earthquake occurs again in the target monitoring area, detecting a time point corresponding to the peak of the thermal anomaly of the land surface temperature in the target monitoring area, adding the time point to the time difference to obtain a predicted time point of the peak of precipitable water vapor, and outputting the predicted time point as a time point of secondary disaster.

Abstract: A wearable device may include a head-mounted display (HMD) for rendering a three-dimensional (3D) virtual object which appears to be located in an ambient environment of a user of the display. The relative positions of the HMD and one or more eyes of the user may not be in desired positions to receive, or register, image information outputted by the HMD. For example, the HMD-to-eye alignment may vary for different users and change over time (e.g., as a given user moves around or as the HMD slips or otherwise becomes displaced). The wearable device may determine a relative position or alignment between the HMD and the user's eyes. Based on the relative positions, the wearable device may determine if it is properly fitted to the user, may provide feedback on the quality of the fit to the user, and may take actions to reduce or minimize effects of any misalignment.

Abstract: Provided is a material for use in a hydrogen storage structure, a hydrogen storage single tube, and a material composition for a hydrogen storage structure used for the preparation of the material for use in the hydrogen storage structure and the hydrogen storage single tube. The hydrogen storage single tube is provided with a honeycomb- shaped high pressure hydrogen storage structure with a micron-sized pore diameter and is lightweight. A hydrogen storage structure having a pore diameter of 150 ?m and a pipe wall thickness of 35 ?m has an ultimate pressure of >200 MPa, a Rockwell hardness of 86-89, a high temperature resistance of >1900° C., a low temperature resistance of <?260° C., low thermal conductivity, high temperature thermal insulation, and strong acid and alkali resistance. In a high density hydrogen work atmosphere and a complicated dynamic environment, the high pressure hydrogen storage structure is very stable.

Abstract: The present disclosure discloses a method for directed design and regulation of fermented food based on flavor group and its application, belonging to the fields of biology and food technology. The method involves the analysis of a significant number of fermented food samples, resulting in the identification of 20 core flavor components and six highly productive functional microorganisms associated with these core flavor components. Mathematical models have been constructed based on the correlation between the core flavor components and the microbial community structure. The method allows for the directed design and regulation of flavor components during the production of fermented food, ensuring stable production of fermented foods.

Abstract: The present application provides an output driving circuit and a memory. The output driving circuit includes: a signal input terminal inputting a positive input signal and a negative input signal complementary to each other; a pull-up output unit and a pull-down output unit connected to the signal input terminal, the positive input signal acting as an input signal of the pull-up output unit, and the negative input signal acting as an input signal of the pull-down output unit; at least one compensation unit connected in parallel with the pull-up or pull-down output unit; at least one pulse signal generation circuit, and generating a pulse signal, the pulse signal acting as a control signal of the compensation unit; and a signal output terminal connected to an output terminal of the pull-up output unit, an output terminal of the pull-down output unit and an output terminal of the compensation unit.

Abstract: A method and system for monitoring an extraordinary rainstorm based on multi-source data is provided. The method includes: acquiring a current moment of a target region; dividing a target time period into n rain events by means of a time window; inverting precipitable water vapor within each rain event; acquiring an accumulated rainfall per m hours within each rain event; computing, according to precipitable water vapor and the accumulated rainfall per m hours within each rain event, a mutual conversion speed V between the precipitable water vapor and the accumulated rainfall; indicating, if the conversion speed is greater than or equal to 1, that a rainfall is excessive and the extraordinary rainstorm is going to occur after the current moment; and indicating, if the conversion speed is less than 1, the rainfall is insufficient and the extraordinary rainstorm is about to end.

Abstract: Systems and methods for depth plane selection in display system such as augmented reality display systems, including mixed reality display systems, are disclosed. A display(s) may present virtual image content via image light to an eye(s) of a user. The display(s) may output the image light to the eye(s) of the user, the image light to have different amounts of wavefront divergence corresponding to different depth planes at different distances away from the user. A camera(s) may capture images of the eye(s). An indication may be generated based on obtained images of the eye(s), indicating whether the user is identified. The display(s) may be controlled to output the image light to the eye(s) of the user, the image light to have the different amounts of wavefront divergence based at least in part on the generated indication indicating whether the user is identified.

Abstract: A method and system for monitoring an extraordinary rainstorm based on multi-source data is provided. The method includes: acquiring a current moment of a target region; dividing a target time period into n rain events by means of a time window; inverting precipitable water vapor within each rain event; acquiring an accumulated rainfall per m hours within each rain event; computing, according to precipitable water vapor and the accumulated rainfall per m hours within each rain event, a mutual conversion speed V between the precipitable water vapor and the accumulated rainfall; indicating, if the conversion speed is greater than or equal to 1, that a rainfall is excessive and the extraordinary rainstorm is going to occur after the current moment; and indicating, if the conversion speed is less than 1, the rainfall is insufficient and the extraordinary rainstorm is about to end.

Abstract: The invention relates to a bromodomain inhibitor. The invention also provides compositions and formulations comprising such compounds, and methods of using and preparing such compounds.

Abstract: A prediction method for changes of physical parameters after earthquakes includes: obtaining a precipitable water vapor after an earthquake in a target monitoring area during a historical period; verifying the accuracy of the precipitable water vapor collected in the historical period; obtaining thermal anomaly data of the land surface temperature after the earthquake in the target monitoring area during the historical period; determining a time difference between peak of the precipitable water vapor and peak of the thermal anomaly of the land surface temperature; when the earthquake occurs again in the target monitoring area, detecting a time point corresponding to the peak of the thermal anomaly of the land surface temperature in the target monitoring area, adding the time point to the time difference to obtain a predicted time point of the peak of precipitable water vapor, and outputting the predicted time point as a time point of secondary disaster.

Abstract: [Problem] To develop a technique that can stabilize the higher-order structure of a nucleic acid and can be used in analysis of nucleic acid structure. [Solution] This guanosine derivative compound is represented by formula 1. In the formula, one of R1 and R2 represents H, and the other represents any of H, OH, OCH3, and F, R3 represents a functional group that is for detection and that has 19F, R4 represents an amine-protecting group, R5 represents a hydroxy group-protecting group, and R6 represents an introduction group that is to be introduced into a nucleic acid oligomer. This guanosine derivative compound can be introduced as a part of a nucleic acid sequence, and the introduced nucleic acid oligomer stabilizes the higher-order structure in a nucleic acid, and enables dynamic detection by 19F NMR.