Abstract: An experiment system and transparent experiment method for replicating fluid displacement in a pore structure of a natural rock mass are provided. The natural pore structure is extracted and a digital porous model corresponding to the natural rock mass is reconstructed with the image processing method. Based on the digital porous model, a three-dimensional pore structure model with a transparent and visible internal structure is printed by a 3D printing device, such that the pore space inside the three-dimensional pore structure model is visible. In this way, the whole fluid flow during the displacement-seepage process within the natural rock mass can be replicated and visually observed from the outside when performing the displacement-seepage experiment. Further, temperature, flow rate, and pressure can be accurately controlled, to replicate various experiment conditions, so as to perform quantitative analysis on distribution features of a seepage field and a fluid speed field.

Abstract: A hoisting apparatus for a mine vertical shaft, a hoisting system for a mine vertical shaft and a controlling method thereof are provided. The hoisting apparatus includes a driving device provided at a wellhead and a guiding device provided in a vertical shaft. A position of the guiding device corresponds to a position of the driving device and a transmission rope is wound around the driving device and the guiding device. Moreover, the driving device is drivingly connected to the guiding device via the transmission rope; and a tension regulating device is provided in the vertical shaft. The guiding device is movably provided at the tension regulating device that is for regulating a distance between the driving device and the guiding device. The tension regulating device controls a tension of the transmission rope by regulating the distance between the driving device and the guiding device.

Abstract: The invention provides a method and system for separating xenon-krypton mixed gas by hydrate formation process. The system is mainly composed of a gas hydrate generating unit, a heat exchanging unit and a gas-water separating unit: pre-cooled xenon-krypton mixed gas is injected from a bottom of a reaction tower, xenon gas in the mixed gas and water attached to a porous tray generate a xenon gas hydrate; and water is injected from a top of the tower to wet the porous tray, a generated hydrate particle is washed and collected to the bottom of the tower simultaneously to form a hydrate slurry, after passing through the heat exchanging unit, the xenon gas hydrate in the slurry is decomposed to form a gas phase flow and a water phase flow, and then enters the gas-water separating unit, and the xenon gas is separated from decomposed water.

Abstract: Disclosed are a method and a system for multi-objective optimization of urban train operation. Firstly, speed limit information, slope information and curve radius information of a real train route are obtained, a section is segmented into non-equal sub-sections according to the above information about actual line characteristics, and then a longitudinal dynamics model of the train is constructed in combination with basic vehicle data of the train. Next, energy consumption of the train operation, section operation time, actual parking positions, and rates of acceleration change are calculated, so as to construct a multi-objective optimization model of train operation. Afterwards, a multi-objective differential evolution algorithm is used to solve the multi-objective optimization model, in order to obtain a Pareto optimal solution set of each operation district. Finally, an optimal solution is obtained which takes all objectives into comprehensive consideration, and an optimal train speed curve is generated.

Abstract: Provided are a composition for depositing a silicon-containing thin film containing a bis(aminosilyl)alkylamine compound and a method for manufacturing a silicon-containing thin film using the same, and more particularly, a composition for depositing a silicon-containing thin film, containing the bis(aminosilyl)alkylamine compound capable of being usefully used as a precursor of the silicon-containing thin film, and a method for manufacturing a silicon-containing thin film using the same.

Abstract: Disclosed is a method for transmitting an uplink signal by a terminal in a non-licensed band. In particular, the method comprises: performing a clear channel assessment (CCA) on the non-licensed band; and transmitting the uplink signal on a specific slot on the basis of the result of performing the CCA, wherein when the specific slot is a random access channel (RACH) slot, the uplink signal is transmitted on the basis of a default timing advanced (TA) value for RACH signal transmission.

Abstract: An automatic coal mining machine and a fluidized coal mining method are provided. A first excavation cabin is configured to cut coal seam to obtain raw coal and to be transported to a first coal preparation cabin for separating coal blocks from gangue. Then, the obtained coal blocks are transported to a first fluidized conversion reaction cabin. The first fluidized conversion reaction cabin converts the energy form of the coal block into liquid, gas or electric energy, which is transported to a first energy storage cabin for storing. Coal mining and conversion are carried out in underground coal mines, so it is not necessary to raise coal blocks to the ground for washing and conversion, thereby reducing the transportation cost of coal, improving the utilization degree of coal, and avoiding the pollution of the ground environment caused by waste in the mining and conversion process.

Abstract: A laser system includes a first cavity to output a laser light along a first path, a first mirror to receive the laser light from the first cavity, and redirect the laser light along a second path that is different than the first path, a beam splitter removably located at a first position on the second path, a beam combiner removably located at a second position on the second path, and an alignment device having first and second alignment features. The first and second alignment features occupy the first position and the second position, respectively, on the second path, when the beam splitter and the beam combiner are removed from the first position and the second position.

Abstract: The present invention discloses a micro LED structure including a first semiconductor layer, a first electrode, a second electrode, and an active layer. The first semiconductor layer has two opposite sides defined as a first surface and a second surface. The first semiconductor layer has a doped region located therein and exposed on the first surface. A pn junction is formed between the doped region and the first semiconductor layer. The first electrode and the second electrode, located on the first surface, are capable of electrically connecting to the first semiconductor layer and the doped region respectively. The active layer is adjacent to the second surface. Wherein the first semiconductor layer is a first doping type, and the doped region is a second doping type different from the first doping type, and the first semiconductor layer and the pn junction are located at identical side of the active layer.

Abstract: A luggage rack able to illuminate includes a body portion (101), fixed on a top of a vehicle. A plurality of illuminators (103) is further included and arranged with the illuminating luggage rack. By arranging the illuminators (103), surrounding vehicles and drivers may easily notice the vehicle having the illuminating luggage rack, ensuring driving safety.

Abstract: A hologram display device includes a light source unit that emits light, a spatial light modulator that modulates the light emitted from the light source unit, and a random pinhole panel. The random pinhole panel includes a plurality of pinholes of a random position or a random size and is arranged in line with an output part of the spatial light modulator. In the hologram display device and the method of manufacturing the hologram display device, a position and size of a random pinhole on the random pinhole are not limited to inside each pixel of the spatial light modulator.

Abstract: Methods, systems, and devices for memory systems having a selectively interfaceable memory subsystem are described. A memory system may include the memory subsystem that may be configurable to provide volatile storage, nonvolatile storage, or both to a host system. The memory subsystem may include a plurality of ports each capable of communicating with the host system using different interfaces. The memory subsystem may be dynamically configurable to perform different functions based on the demands of the host system. In some examples, memory systems described herein may include a first memory subsystem to provide nonvolatile storage to the host system, a second memory subsystem to provide volatile storage to the host system, and a third memory subsystem configurable to provide volatile storage or nonvolatile storage or both to the host system.

Abstract: An electronic device comprises: a camera, at least one communication module; at least one memory; and at least one processor.

Abstract: An early warning and event monitoring computer device for predicting events is provided. The computer device programmed to a) store a plurality of models associated with a plurality of future events, b) receive a plurality of data from a plurality of data sources, c) preprocess the plurality of data to remove noise and populate the plurality of models with the plurality of data, d determine a subset of models of the plurality of models to execute based on a user query, e) execute the subset of models to receive a plurality of results, f) ensemble the plurality of results from the subset of models to determine a combination model, and g) execute the combination model to forecast at least one future event based on the user query. The computer device uses predictive analytical results to visualize which actors, events, sentiments, and key variables across the topologies are critical to support.

Abstract: A scroll expander, comprising: a housing; and an expansion mechanism provided in the housing. A back pressure chamber in fluid communication with a medium pressure chamber is provided in the expansion mechanism and is provided with at least one passage in fluid communication from the back pressure chamber to a low pressure region; the passage is configured such that: the passage is opened when the pressure in the back pressure chamber is lower than the pressure of the low pressure region, and is closed when the pressure in the back pressure chamber is higher than or equal to the pressure of the low pressure region. The scroll expander can avoid the problem of being unable to be started and to operate normally; and the scroll expander is simple in structure, easy to process and manufacture, and high in cost effectiveness.

Abstract: The present application discloses a method for identifying arrhythmia, a device for identifying arrhythmia, and a computer readable medium. The method includes: acquiring a type of arrhythmia to be identified; acquiring an ECG signal collected by an ECG acquisition device; detecting feature wave information in the ECG signal according to the type of arrhythmia to be identified; extracting a feature parameter from the denoised ECG signal and the feature wave information according to the type of arrhythmia to be identified; and identifying, by a classifier, an occurrence of the type of arrhythmia to be identified according to the feature parameter.

Abstract: The invention relates to a dynamic fracture width calculation method for drilling fluid loss in a fractured formation, which belongs to the field of loss control of drilling and well completion engineering, and includes the following steps: selecting a model according to seismic data and fracture development characteristics and calculating a static hydraulic width of a formation fracture; substituting the static hydraulic width of the formation fracture into a deformation formula of a fracture hydraulic width, to obtain a dynamic hydraulic width of a wellbore fracture; converting the dynamic hydraulic width of the wellbore fracture into an average mechanical width of the wellbore fracture, according to a conversion relational formula of a mechanical width; and solving a mechanical width distribution range of the fracture according to a standard deviation of a mechanical width distribution of a natural fracture.

Abstract: An active stylus calibration method includes establishing, by an electronic device having a touchscreen, a network connection to an active stylus, detecting a function signal from the active stylus, determining a distance between the active stylus and the touchscreen based on a parameter value, obtained through detection, corresponding to the function signal, where a smaller parameter value indicates a larger distance, and when a timing is started when the distance is at a first threshold, the timing duration reaches a specified duration and the distance is at a second threshold, sending, through a network, a force calibration instruction to the active stylus to calibrate a force sensor based on the force calibration instruction.