Abstract: A merchant evaluation method includes: acquiring multi-dimensional evaluation index data of a merchant to be evaluated; for the multi-dimensional evaluation index data, obtaining, by calculation based on standard normal distribution, a health portrait of the merchant to be evaluated, and obtaining, by calculation based on a geometric mean, a health score of the merchant to be evaluated, wherein the health portrait is data representing at least one evaluation result of the merchant to be evaluated; and outputting the health portrait and the health score of the merchant to be evaluated.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a risk management method are provided. One of the methods includes: determining a candidate verification mode set comprising one or more candidate verification modes for a target event; determining output weights for at least some of the verification modes in the candidate verification mode set; and selecting a verification mode for risk management of the target event from the candidate verification mode set based on the output weights. In this method, multiple factors, such as risk type, device type, user preference, are taken into consideration in an quantification process when selecting a verification mode. Thus this method avoids excessive reliance on subject understanding of a transaction, improves the robustness of risk management against unauthorized transactions, and reduces unnecessary interference to authorized transactions.

Abstract: A statistical language model may be used to simulate one or more users of a conversation. The statistical language model may be used to train a user to participate in a particular types of conversation by simulating communications by another type of user in the conversation. The communications may be simulated by selecting a simulation context from available simulation contexts and the simulation context may correspond to a difficulty level. Upon receiving a communication from a user, a responsive simulated communication may be generated by processing the received communication and the simulation context with the statistical language model. Upon completion of the simulation, another simulation context may be selected for the next simulation.

Abstract: Disclosed are a silencer and a compressor with same. The silencer includes a housing, a gas inlet end of the housing being provided with a protrusion extending into an interior of the housing, a portion of the protrusion approximate to a gas outlet end of the housing being closed, and the gas inlet end of the housing being provided with at least two gas inlets around the protrusion. A part of a gas flow enters the housing through the gas inlets, and other part of the gas flow impacts the protrusion and then at least partially flows back and enters the housing through the gas inlets.

Abstract: An exhaust assembly and a compressor including the exhaust assembly. The exhaust assembly includes an exhaust bearing seat; an intake cavity is provided at an intake end of the exhaust bearing seat; an exhaust cavity is provided at an exhaust end of the exhaust bearing seat; the intake cavity and the exhaust cavity are staggered with each other in the axial direction of the exhaust bearing seat; the exhaust bearing seat is provided with a flow passage for connecting the intake cavity with the exhaust cavity; and an oil separation structure is provided in the exhaust cavity.

Abstract: Some embodiments of the present disclosure provide a slide valve for a compressor and a screw compressor with the slide valve. The slide valve for the compressor includes a slide valve main body (10), the slide valve main body (10) is provided with a gas replenishing chamber (11) therein, a surface, facing to a compression chamber of the compressor, of the slide valve main body (10) is provided with a gas replenishing outlet hole (12), and the gas replenishing outlet hole (12) is in communication with the gas replenishing chamber (11).

Abstract: An active decoupling device for stabilizing the impedance on an electric line in a determined band of frequency. The decoupling device of the invention is inductively coupled to the power line and comprises a transformer with a primary winding connectable to the power line, and a secondary winding closed on a burden network. In an application, the invention, is used to decouple a smart meter from variations of the load impedance.

Abstract: Disclosed is a multi-stage compressor, including a gas supplement structure, a low-pressure stage chamber and a high-pressure stage chamber. The gas supplement structure includes a gas supplement inlet and a perforated member wherein the gas supplement inlet is arranged at an upstream location of an exhaust gas flow of the low-pressure stage chamber; the perforated member is arranged at a downstream location of the exhaust gas flow of the low-pressure stage chamber; a liquid refrigerant sprayed from the gas supplement inlet is mixed with exhaust gas of the low-pressure stage chamber to impact on the perforated member; the liquid refrigerant is dispersed, the dispersed liquid refrigerants are re-mixed with the exhaust gas of the low-pressure stage chamber and enter the high-pressure stage chamber.

Abstract: An active decoupling device for stabilizing the impedance on an electric line in a determined band of frequency. The decoupling device of the invention is inductively coupled to the power line and comprises a transformer with a primary winding connectable to the power line, and a secondary winding closed on a burden network. In an application, the invention, is used to decouple a smart meter from variations of the load impedance.

Abstract: Disclosed are an oil separation structure and a compressor. The oil separation structure includes a housing and a filtering screen. A core is disposed at a center of the housing, and a plurality of guiding members for guiding gas flow are provided along circumferential directions of the core. The filtering screen is disposed on a periphery of the housing, and a cavity is formed between the filtering screen and the core. The housing is provided with a gas inlet and a gas outlet which are in communication with the cavity, and the gas inlet is configured to introduce the gas flow into the cavity; the guiding members are configured to guide the gas flow to rotationally flow around the core, and the gas outlet is configured to discharge the gas flow from the cavity.

Abstract: A group of reductive 2D materials (R2D) with extended reactive vacancies and a method for making the R2D with extended reactive vacancies are provided, especially the example of the reductive boron nitride (RBN). To create defects such as vacancies, boron nitride (BN) powders are milled at cryogenic temperatures. Vacancies are produced by milling, and the vacancies can be used to reduce various metal nanostructures on RBN. Due to the thermal stability of the RBN and the enhanced catalytic performance of metal nanostructures, RBN-metals can be used for different catalysts, including electrochemical catalysts and high temperature catalysts.

Abstract: Provided is a rotor structure of a screw compressor and an inverter screw compressor with the same. The rotor structure includes: a female rotor including a female rotor body, wherein the female rotor body is includes a plurality of female teeth, and a tooth profile is formed between tooth crests of two adjacent female teeth of the female rotor body, and the tooth profile is formed by sequentially connecting an arc segment a1b, an envelope bc, an arc segment cd, an arc segment de, an arc segment ea2, an arc segment a2a3 from front to rear along a counterclockwise direction, wherein centers of the arc segment cd and the arc segment de are respectively located on both sides of the tooth profile. The tooth profile reduces rotation speed of the rotor structure. The inverter screw compressor reduces the leakage of the compressor and improves the compression energy efficiency and application of the compressor.

Abstract: An instant message is sent from within an instant message conversation from a terminal computing device to an instant messaging server. A shortcut operation item is displayed on the terminal computing device according to an instruction received from the instant messaging server, where the shortcut operation item is associated with a service task further associated with content of the sent instant message. A predetermined execution operation associated with the shortcut operation item is received by the terminal computing device. The service task associated with the shortcut operation item is initiated by sending a request to execute the service task to the instant messaging server. An instruction is received from the instant messaging server to display an execution result of the service task, and display of the execution result of the service task is initiated on the terminal computing device.

Abstract: Machine learning-based approaches are used to detect trends of behavior and anomalous events from customer support messages between customers and customer support agents or other appropriate resources in an electronic environment. For example, for a plurality of time periods, a prediction model can be trained. The prediction models can be trained on messages that correspond to each prediction models' period of time. The prediction models can process messages to determine a score (e.g., a representative confidence score) for the time period a prediction model is associated with. For a selected time period, a model (e.g., a trend detection model) can be applied to the scores for time periods before the selected time period to determine whether the score for the selected time period is associated with an anomalous event. Thereafter, an alert can be presented with, for example, the messages that triggered the alert, among other such information.

Abstract: Disclosed is a catalyst pre-contact method for the continuous polymerization of an olefin, wherein a primary catalyst, a co-catalyst and, optionally, an external electron donor are mixed and then undergo a pre-contact reaction, with the pre-contact reaction temperature being ?30° C. to 35° C. and adjustable, and the pre-contact reaction time being 0.5 min to 10 min and adjustable, and the pre-contacted catalyst is brought into a catalyst prepolymerization system and then into a catalyst polymerization system, or is directly brought into the catalyst polymerization system. Further disclosed is a catalyst pre-contact device for the continuous polymerization of an olefin, which can adjust the pre-contact time and pre-contact temperature of the catalyst so that the performance of the catalyst achieves a better level according to the process.

Abstract: Some embodiments of the present disclosure provide a slide valve for a compressor and a screw compressor with the slide valve. The slide valve for the compressor includes a slide valve main body (10), the slide valve main body (10) is provided with a gas replenishing chamber (11) therein, a surface, facing to a compression chamber of the compressor, of the slide valve main body (10) is provided with a gas replenishing outlet hole (12), and the gas replenishing outlet hole (12) is in communication with the gas replenishing chamber (11).

Abstract: A thermostatic valve includes a valve body, first and second elastic members, a valve seat assembly, a valve core, and a thermal actuator. The thermostatic valve includes six ports, four valve port portions each having a valve port, and a first cavity and a second cavity which are isolated from each other. One of the third port, the fourth port and the sixth port is in communication with the second cavity, and the other two of the third port, the fourth port and the sixth port are configured to be in communication with the second cavity through valve ports; and one of the first port, the second port and the fifth port is in communication with the first cavity, and the other two of the first port, the second port and the fifth port are configured to be in communication with the first cavity through valve ports.

Abstract: An exhaust assembly and a compressor including the exhaust assembly. The exhaust assembly includes an exhaust bearing seat; an intake cavity is provided at an intake end of the exhaust bearing seat; an exhaust cavity is provided at an exhaust end of the exhaust bearing seat; the intake cavity and the exhaust cavity are staggered with each other in the axial direction of the exhaust bearing seat; the exhaust bearing seat is provided with a flow passage for connecting the intake cavity with the exhaust cavity; and an oil separation structure is provided in the exhaust cavity.

Abstract: The present disclosure discloses a screw compressor and an air-conditioning unit, and relates to the field of compressors. The screw compressor has a first pressure level rotor assembly, a second pressure level rotor assembly and a body. The first pressure level rotor assembly has a first pressure level male rotor and a first pressure level female rotor; the second pressure level rotor assembly has a second pressure level male rotor and a second pressure level female rotor. Wherein, the first pressure level rotor assembly and the second pressure level rotor assembly are configured to enable an axial force received by the first pressure level rotor assembly and exerted by a compressed gas opposite to an axial force received by the second pressure level rotor assembly and exerted by a compressed gas. The force received during the operational process of the screw compressor is more balanced.

Abstract: One embodiment of the present disclosure provides a system and method for generating risk-control rules. During operation, the system can obtain a first data set and a second data set. The first data set can be associated with a first set of events in a first domain. The second data set can be associated with a second set of events in a second domain. The system can combine the first data set and the second data set to generate a sample data set and train a statistical model by applying the sample data set to determine a set of weights. The system can determine a set of conditions based on the set of weights. Next, the system can generate a set of risk-control rules based on the set of conditions. The system can then apply the set of risk-control rules to a current event in the second domain to determine a credibility of the current event.