Abstract: The present application relates to the technical field of 3D printing, and more particularly to a method and a device for placing a 3D model, a computer-readable storage medium, and a 3D printer. The method includes: performing a dimension reduction processing to a first 3D model and a second 3D model, respectively, to obtain a first plane graphics corresponding to the first 3D model and a second plane graphics corresponding to the second 3D model; determining a minimum bounding rectangle of the first plane graphics; determining a convex hull of the second plane graphics, and determining an insertion point in the convex hull; and performing a successive insertion attempt to the minimum bounding rectangle at the insertion point, and determining a final placement position.

Abstract: The present application provides eight methods for improving the fineness of a specified region on the surface of a light-curable 3D printed model. In Methods 1-4, an anti-aliasing function is turned on/an image edge blurring function may be turned on entirely for a puppet 3D model, which can make the overall surface of the printed model smooth and flat. In addition, a specified region on the model surface may be circled, and an image sharpening function is turned on/the anti-aliasing function is turned off/the image edge blurring function is turned off to retain a marginal sawtooth effect of the sliced image in the specified region, so that specific feature lines of the printed model surface are obviously prominent, and the fineness of the specific features in the specified region of the model surface can be improved.

Abstract: The present application relates to the technical field of 3D printing, and more particularly to a method and a device for placing a 3D model, a computer-readable storage medium, and a 3D printer. The method includes: performing a dimension reduction processing to a first 3D model and a second 3D model, respectively, to obtain a first plane graphics corresponding to the first 3D model and a second plane graphics corresponding to the second 3D model; determining a minimum bounding rectangle of the first plane graphics; determining a convex hull of the second plane graphics, and determining an insertion point in the convex hull; and performing a successive insertion attempt to the minimum bounding rectangle at the insertion point, and determining a final placement position.

Abstract: A method for predicting and optimizing an ROP for oil and gas drilling based on Bayesian optimization includes: acquiring raw drilling data according to a preset sampling period, constructing an initial sample data set based on the raw drilling data, constructing an ROP prediction model based on the initial sample data set, and predicting an ROP at a next sample point through a Gaussian process regression based on the ROP prediction model. The present invention realizes rapid analysis of historical drilling data and accurate prediction of an ROP range at a sample point in a feasible domain. The method can obtain an optimized ROP and an optimized engineering parameter through Bayesian optimization, and obtain an engineering parameter corresponding to an optimal ROP. The method has few restrictions on the drilling engineering parameter and the raw formation parameter, improves prediction accuracy, and avoids the problem of blurred parameter value boundaries.

Abstract: A method for predicting and optimizing an ROP for oil and gas drilling based on Bayesian optimization includes: acquiring raw drilling data according to a preset sampling period, constructing an initial sample data set based on the raw drilling data, constructing an ROP prediction model based on the initial sample data set, and predicting an ROP at a next sample point through a Gaussian process regression based on the ROP prediction model. The present invention realizes rapid analysis of historical drilling data and accurate prediction of an ROP range at a sample point in a feasible domain. The method can obtain an optimized ROP and an optimized engineering parameter through Bayesian optimization, and obtain an engineering parameter corresponding to an optimal ROP. The method has few restrictions on the drilling engineering parameter and the raw formation parameter, improves prediction accuracy, and avoids the problem of blurred parameter value boundaries.

Abstract: Deferred revenue calculations can be necessary in an accrual-basis accounting model where a subscription or other type of sale is conducted that requires deferred revenue recognition. A snapshot state corresponding to the current state of a particular deferral can be generated. Out of order deferred events can also occur. The current state of the deferral can also be published in a downstream system.

Abstract: A control processing system and an imaging method for a subcutaneous vein developing device are provided. The control processing system includes a processor subsystem and a programmable logic subsystem. The processor subsystem and the programmable logic subsystem are interconnected via a high-bandwidth Advanced eXtensible Interface (AXI) bus. The control processing system is in signal communication with a visible light source driving circuit, a near infrared light source driving circuit, a projection imaging element driving circuit, a near infrared imaging element driving circuit, a display screen driving circuit, and a user control interface. For a subcutaneous vein developing imaging application and imaging characteristics thereof, a control processing system architecture of a subcutaneous vein developing system is designed and is implemented in a manner of combining software and hardware.

Abstract: The present invention relates to a class of compounds represented by the Formula I or a pharmaceutically acceptable salt thereof, pharmaceutical compositions comprising compounds of the Formula I, and methods of selectively inhibiting or antagonizing the ?v?3 and/or ?v?5 integrin.

Abstract: The present invention relates to a class of compounds represented by the Formula I 1