Abstract: An integrated rapid excavation equipment for rock roadways and a method thereof are provided. The excavation equipment is provided with a multi-function drilling rig on one side of the boom-type roadheader body and a temporary support mechanism above an oscillatory cutting part. Before the excavation equipment breaks the rock, the multi-function drilling rig is used to form deep holes in the rock to be broken, the pulse fracturing system is then utilized to further expand and fracture the deep holes to weaken the rock mass strength, the oscillatory cutting part is subsequently employed to mill the rock mass, and finally, the multi-function drilling rig and the temporary support device are used for bolting and support on the rock mass.

Abstract: A system for generating contrast-enhanced magnetic resonance images of a subject includes an input configured to receive at least one non-contrast enhanced image of the subject, and a contrast-enhanced magnetic resonance (MR) image synthesis neural network coupled to the input and configured to generate a contrast-enhanced magnetic resonance image of the subject based on the at least one non-contrast enhanced image of the subject. The contrast-enhanced MR image synthesis neural network is trained using a set of training data comprising at least quantitative data.

Abstract: The present disclosure provides systems and methods for automatic peritumoral infiltration risk stratification. A method includes obtaining medical image data of a tumor, segmenting the medical image data into a tumor core region and a peritumoral zone region, and projecting voxel data from the tumor core region and the peritumoral zone region into a feature space. The method can also include identifying a characteristic image data of the tumor core region as a centroid of the tumor core region voxels within the feature space, comparing voxel feature data of the peritumoral zone region to the tumor core region centroid to rank voxels of the peritumoral zone region based on similarity to the tumor core region data, and using a modified triplet loss function to grow two distinct regions of interest within the peritumoral zone region.

Abstract: Disclosed a method, a system, a device, and a medium for determining load-bearing deformation of solid waste materials. The method includes: obtaining a bulk sample of solid waste material, sieving the sample to obtain multiple particle sizes, and measuring the mass of each particle size before the experiment; performing a compaction experiment on the bulk sample to obtain a stress-strain relationship curve, and calculating a slope of a linear part; sieving the bulk sample after the compaction experiment to obtain multiple particle sizes, and measuring a mass of each particle size; plotting a mass ratio diagram before and after the experiment, and calculating a relative breakage rate Br and a measured fractal dimension; constructing a macroscopic strain relationship equation, substituting the measured fractal dimension into the equation to obtain a macroscopic strain, and thereby determining load-bearing deformation degree of the solid waste materials.

Abstract: A comprehensive characterization method of cuttability of hydraulic fracturing hard rock is provided, including the following steps: constructing a hard rock hydraulic fracturing fracture evolution model, and carrying out simulation evolution based on the hard rock hydraulic fracturing fracture evolution model to determine master control physical quantities; calculating average influence degree of the master control physical quantities on fracture density, and constructing a comprehensive characterization model of the fracture density; monitoring evolution characteristics of peak cutting force of hard rock in a simulation evolution process, and fitting a functional relationship between the peak cutting force and the fracture density; and constructing a comprehensive characterization model of the peak cutting force, and obtaining the cuttability of the hard rock through the comprehensive characterization model of the peak cutting force.

Abstract: A system for automating a magnetic resonance imaging (MRI) pipeline for a patient is provided. The system includes one or more processors that are configured to receive information that includes patient data and access one or more trained LLMs. The one or more processors are further configured to apply the patient data to the one or more trained LLMs to generate an MRI protocol that includes one or more pulse sequences and pulse sequence parameters. The one or more processors are further configured to store the MRI protocol.

Abstract: A method for synthesizing magnetic resonance (MR) images with a plurality of contrasts includes generating, using a processor device, a contrast dictionary using a physics-based signal model, retrieving, using the processor device, a plurality of quantitative tissue maps for an anatomy of interest for one or more subjects, synthesizing, using the processor device, a plurality of MR images with a plurality of contrasts using the plurality of quantitative tissue maps and the contrast dictionary, and storing, using the processor device, the plurality of synthesized MR images in a data storage.

Abstract: Distributed security key management for protecting roaming data via a trusted platform module is performed by systems that include first and second processors, and first and second respective hardware security modules. The first security module encrypts a security key using a public key from the second security module, and the encrypted security key is provided to the second security module. A virtual machine (VM) executed by the first processor has a first virtual security module instance having state data that includes a storage key encrypting VM virtual disk data and that is encrypted with the security key. When a transfer condition is determined, the VM is transferred and executed by the second processor, using a second virtual security module instance, based on decrypting the security key by the second security module using a private key and decrypting the state data for the second virtual security module using the security key.

Abstract: The application discloses a system and method for centrifugal intrusion of molten metal into porous media and then solidification positioning, including: test cups, used for placing test medium and molten metal intrusion; a rotor block, used for mounting the test cups, where one end of each test cup for placing the test medium is far away from the rotor block; a constant temperature oil bath preheating device, used for preheating the test cups and the rotor block; a centrifugal device, internally provided with the rotor block, used for performing a centrifugal operation on the test cups, where the test cups and the rotor block are installed inside the centrifugal device after being preheated; and an infrared heating and compression refrigerating device, arranged inside the centrifugal device, used for controlling a temperature of the test cups.

Abstract: Provided are a map data processing method and apparatus, and a storage medium, which relate to the field of data processing technology and, in particular, to artificial intelligence technology, for example, computer vision, map technology, and intelligent transportation. A specific implementation solution includes: processing landform coverage data according to a type of surface species coverage and a data processing rule associated with the type of surface species coverage to obtain a surface species coverage effect map; and generating a landform map according to the surface species coverage effect map and a reference map.

Abstract: Disclosed are a hydraulic fracturing and cutting cooperative device suitable for a hard rock and a use method thereof, belonging to the technical field of high-efficiency and rapid excavation of hard rock roadway (tunnel). The hydraulic fracturing and cutting cooperative device suitable for a hard rock provided by the disclosure includes a drill pipe, a pneumatic drilling system, a hydraulic fracturing system, a collaborative control system and a cutting head.

Abstract: A high-remanence neodymium-iron-boron magnet, and a preparation method and the use thereof are provided. The neodymium-iron-boron magnet has crystal grains with an R-T-B type compound as a main structure, and a grain boundary phase. By means of adjusting the proportional relation of elements such as B, Cu, Ga, RE and Ti, the neodymium-iron-boron magnet can achieve a relatively high main phase grain volume ratio and effectively restrain the proportion of a B-rich phase in the grain boundary phase, such that the magnet has relatively high Br, and also has both good Hcj and squareness performance.

Abstract: A high-coercivity Nd—Fe—B sintered magnet and a preparation method and use thereof are provided. The sintered magnet contains the following components in percentage by a mass: 100%: 26-37 wt % of R, R being at least one rare earth element including Nd; 0.07-0.23 wt % of Mn; 0.8-1 wt % of B; 0.5-4 wt % of M, M comprising Cu and/or Al, and at least one selected from Co, Ti, Ni, Zr and Ga; and the remaining being Fe. A Mn-containing auxiliary alloy powder is mixed with a Mn-free neodymium-iron-boron main alloy powder to prepare the Nd—Fe—B sintered magnet. The Mn-containing auxiliary alloy powder, also contains at least one of metals Cu and Al. Mn can replace a part of Fe in the main phase, so that the amount of solid solution of beneficial elements in grain boundaries in the main phase is reduced, and the coercivity is improved.

Abstract: Distributed security key management for protecting roaming data via a trusted platform module is performed by systems that include first and second processors, and first and second respective hardware security modules. The first security module encrypts a security key using a public key from the second security module, and the encrypted security key is provided to the second security module. A virtual machine (VM) executed by the first processor has a first virtual security module instance having state data that includes a storage key encrypting VM virtual disk data and that is encrypted with the security key. When a transfer condition is determined, the VM is transferred and executed by the second processor, using a second virtual security module instance, based on decrypting the security key by the second security module using a private key and decrypting the state data for the second virtual security module using the security key.

Abstract: Disclosed are a hydraulic fracturing and cutting cooperative device suitable for a hard rock and a use method thereof, belonging to the technical field of high-efficiency and rapid excavation of hard rock roadway (tunnel). The hydraulic fracturing and cutting cooperative device suitable for a hard rock provided by the disclosure includes a drill pipe, a pneumatic drilling system, a hydraulic fracturing system, a collaborative control system and a cutting head.

Abstract: A method for generating segmented images of a region of interest of a subject using magnetic resonance fingerprinting (MRF) includes receiving MRF data and a plurality of quantitative parameter maps generated using the MRF data, deriving a first set of image features based on the plurality of quantitative parameter maps and the MRF data, performing unsupervised clustering on each image feature in the first set of image features to generate a first set of clusters, determining a loss for each image feature and the associated cluster for the image feature, selecting a second set of image features based on the determined loss for each image feature, performing unsupervised clustering on the second set of image features to produce a second set of clusters, generating a non-background cluster with low probability voxels, and generating a segmented image based on the second set of clusters and the non-background cluster.

Abstract: A method for generating magnetic resonance (MR) images using a magnetic resonance imaging (MRI) system includes determining an optimized set of sequence parameters for a pulse sequence using an optimization framework comprising a systematic error index (SEI) configured to characterize errors, performing, using the MRI system, the pulse sequence comprising the optimized set of sequence parameters to acquire data from a subject, and generating at least one image of the subject using the acquired data.

Abstract: A method for reconstructing images using a self-calibrated subspace reconstruction includes receiving data acquired from a subject using a magnetic resonance imaging (MRI) system, generating aliasing-free low resolution images from at least a portion of the received data using temporally local low-rank matrix completion, estimating a temporally global subspace using the aliasing-free low resolution images, and generating aliasing-free high resolution images from the received data using temporally global subspace reconstruction that utilizes the estimated temporally global subspace. In some embodiments, a customized outlier detection algorithm can then be used to detect measurement errors in the aliasing-free high resolution images and to correct the aliasing-free high resolution images. Aliasing-free T1, T2, and ADC maps may be generated after comparing the corrected aliasing free high resolution images with a dictionary.

Abstract: The present disclosure provides a cemented filling material with bionic structure, a preparation method and an application thereof, and belongs to the field of structural modification methods of cemented filling materials and research and development of civil materials with ultra-high energy absorption characteristics. The cemented filling material with bionic structure includes a bionic honeycomb skeleton and cemented filling slurry, where the cemented filling slurry is poured in the bionic honeycomb skeleton.

Abstract: A method for determining an undersampling error for a magnetic resonance fingerprinting (MRF) pulse sequence includes retrieving a plurality of sets of spatial response functions. Each set of spatial response functions is associated with a tissue type in a reference image and is based on a tissue mask of the reference image for each tissue type. A signal evolution for each tissue type may be generated based on, for example, the MRF pulse sequence, An undersampled image may be generated for each tissue type using the set of spatial response functions and the signal evolutions for the tissue type. At least one quantitative parameter may be determined by comparing an undersampled image series created from the undersampled images to an MRF dictionary. An undersampling error for the MRF pulse sequence may be generated by comparing a quantitative map (or maps) for the quantitative parameter (or parameters) and the reference image.