Abstract: The present disclosure provides an earthquake evaluation method based on multi-type geophysical data.

Abstract: A computerized system for transmitting web site data to client devices. the system includes a memory storing instructions and a processor configured to execute the instructions to perform operations. The operations may include generating a plurality of clusters including a fixed number of records, receiving a request to display a list from a client device, and identifying a first cluster, from the plurality of clusters, for display at a landing page. The operations may also include generating a first transmission packet with the first cluster and a callback script, the callback script including navigation triggered functions and a callback message. The operations may also include transmitting the first transmission packet to the client device, receiving the callback message from the client, identifying a second cluster, generating a second transmission packet with the second cluster, and transmitting the second transmission packet.

Abstract: The present invention discloses a method and apparatus for simulating and designing structural parameters of an air-core coil. The method for simulating and designing structural parameters of the air-core coil includes: building an impedance function of the air-core coil according to a structural parameter variable, the air-core coil being of a differential structure and being wound in a completely parallel winding fashion; building an index function of the air-core coil by calculating an equivalent bandwidth, sensitivity and an equivalent noise power spectrum by means of the impedance function. The method is intuitive, and makes calculation of the optimized technological and structural parameters easier and more convenient, thus reducing the amount of calculation and shortening the calculation time.

Abstract: The embodiments of the present disclosure provide systems and methods for providing restock notification, comprising a memory storing instructions and at least one processor configured to execute the instructions. The processor may be configured to receive, from a user interface associated with a user, a first request for a restock notification associated with a product, and modify a database to assign a first status to the product. The processor may further be configured to receive a message indicating that the product is available for purchase, and modify the database to assign a second status to the product. The processor may configure a batch framework to periodically analyze the database to identify product with the second status assigned, and determine a notification schedule for sending the restock notification to the user. The processor may be configured to send the restock notification to the user based on the determined notification schedule.

Abstract: A computerized system for transmitting website data to client devices. the system includes a memory storing instructions and a processor configured to execute the instructions to perform operations. The operations may include generating a plurality of clusters including a fixed number of records, receiving a request to display a list from a client device, and identifying a first cluster, from the plurality of clusters, for display at a landing page. The operations may also include generating a first transmission packet with the first cluster and a callback script, the callback script including navigation triggered functions and a callback message. The operations may also include transmitting the first transmission packet to the client device, receiving the callback message from the client, identifying a second cluster, generating a second transmission packet with the second cluster, and transmitting the second transmission packet.

Abstract: The embodiments of the present disclosure provide systems and methods for providing restock notification, comprising a memory storing instructions and at least one processor configured to execute the instructions. The processor may be configured to receive, from a user interface associated with a user, a first request for a restock notification associated with a product, and modify a database to assign a first status to the product. The processor may further be configured to receive a message indicating that the product is available for purchase, and modify the database to assign a second status to the product. The processor may configure a batch framework to periodically analyze the database to identify product with the second status assigned, and determine a notification schedule for sending the restock notification to the user. The processor may be configured to send the restock notification to the user based on the determined notification schedule.

Abstract: Disclosed is a downhole vibration and impact data recording method, comprising: performing analog-to-digital conversion on analog data, outputting digital format data obtained at a sampling rate f1, and performing sampling storage processing and analysis storage processing on the same. The sampling storage processing includes outputting the digital format data obtained at a sampling rate fn through multiple samplings; storing the same continuously into a storage module. The analysis storage processing includes: buffering the digital format data obtained at the sampling rate f1 into a memory; analyzing the same to determine whether an impact event occurs, and if yes, storing the current data in the memory into the storage module, and then jumping back to the buffering step; otherwise, jumping directly back to the buffering step. With the above method, the amount of data storage can be effectively reduced, while the characteristics of the vibration and impact data can be analyzed.

Abstract: The embodiments of the present disclosure provide systems and methods for providing restock notification, comprising a memory storing instructions and at least one processor configured to execute the instructions. The processor may be configured to receive, from a user interface associated with a user, a first request for a restock notification associated with a product, and modify a database to assign a first status to the product. The processor may further be configured to receive a message indicating that the product is available for purchase, and modify the database to assign a second status to the product. The processor may configure a batch framework to periodically analyze the database to identify product with the second status assigned, and determine a notification schedule for sending the restock notification to the user. The processor may be configured to send the restock notification to the user based on the determined notification schedule.

Abstract: A WEM-based method for deep resource detection using sky waves refers to the technical field of deep resource detection. The proposed method of deep detection using sky waves improves the traditional “atmospheric-lithosphere” half-space propagation theory into a full-space “sky wave” theory of “ionosphere-atmosphere-rock layer”, that is, the influence of the ionosphere and the displacement current in the air are taken into consideration to obtain a new precise expression of “sky wave” response, which is suitable for full space, slow attenuation and long distance propagation. A receiving device for sky wave signal has been developed. Through theoretical model calculation and actual data measurement, it is known that it is possible to use the sky wave for detection within the scope of China's national territory to realize the high-precision electrical structural exploration within a depth of 10 kilometers and open a new era of artificial source electromagnetic detection.

Abstract: The present invention discloses a device for performing temperature correction on an induction logging tool and deep stratum environmental simulation, including: a box body, configured to accommodate the induction logging tool and a deep stratum environmental simulation system; an air channel, configured to make heated air fill the box body; a circulating fan, configured to make the heated air enter the air channel; an electric heater, configured to heat air; a temperature controller, configured to control power of the electric heater; the deep stratum environmental simulation system, configured to simulate lithological and fluid situations in different stratum environments; a data collection system, configured to collect, store, process, and display a signal in real time; and a control unit, configured to control operation of the entire device.

Abstract: Disclosed is a magnetotelluric measurement system, comprising: a magnetic sensor probe for collecting an electromagnetic signal as an impulse response of an earth and transmitting the same to a signal readout circuit; the signal readout circuit configured for receiving and amplifying the electromagnetic signal collected by the magnetic sensor probe; a data acquisition and processing module configured for receiving and processing electromagnetic signal amplified by the signal readout circuit; a storage module configured for storing the electromagnetic signals amplified by the signal readout circuit and processed by the data acquisition and processing module; a first casing for enclosing the magnetic sensor probe and the signal readout circuit; and a second casing for enclosing the data acquisition and processing module and the storage module.

Abstract: The embodiments of the present disclosure provide systems and methods for providing restock notification, comprising a memory storing instructions and at least one processor configured to execute the instructions. The processor may be configured to receive, from a user interface associated with a user, a first request for a restock notification associated with a product, and modify a database to assign a first status to the product. The processor may further be configured to receive a message indicating that the product is available for purchase, and modify the database to assign a second status to the product. The processor may configure a batch framework to periodically analyze the database to identify product with the second status assigned, and determine a notification schedule for sending the restock notification to the user. The processor may be configured to send the restock notification to the user based on the determined notification schedule.

Abstract: Disclosed is a downhole vibration and impact data recording method, comprising: performing analog-to-digital conversion on analog data, outputting digital format data obtained at a sampling rate f1, and performing sampling storage processing and analysis storage processing on the same. The sampling storage processing includes outputting the digital format data obtained at a sampling rate fn through multiple samplings; storing the same continuously into a storage module. The analysis storage processing includes: buffering the digital format data obtained at the sampling rate f1 into a memory; analyzing the same to determine whether an impact event occurs, and if yes, storing the current data in the memory into the storage module, and then jumping back to the buffering step; otherwise, jumping directly back to the buffering step. With the above method, the amount of data storage can be effectively reduced, while the characteristics of the vibration and impact data can be analyzed.

Abstract: Disclosed is a magnetotelluric measurement system, comprising: a magnetic sensor probe for collecting an electromagnetic signal as an impulse response of an earth and transmitting the same to a signal readout circuit; the signal readout circuit configured for receiving and amplifying the electromagnetic signal collected by the magnetic sensor probe; a data acquisition and processing module configured for receiving and processing electromagnetic signal amplified by the signal readout circuit; a storage module configured for storing the electromagnetic signals amplified by the signal readout circuit and processed by the data acquisition and processing module; a first casing for enclosing the magnetic sensor probe and the signal readout circuit; and a second casing for enclosing the data acquisition and processing module and the storage module.

Abstract: In a system for arranging survey points in field operation with a ground electromagnetic instrument, the position information of survey lines and survey points are planned and downloaded to an aircraft in advance. The survey lines and one survey point among survey points planned in advance is selected and the coordinate information of the survey point is acquired. The aircraft is controlled to fly to the physical geographic location of the survey point according to the coordinate information of the survey point in conjunction with positioning information acquired in real time. The aircraft hovers above the physical geographic location of the survey point and projects a predetermined indication mark to the ground. The detection instrument and electric field sensor are deployed at a first position indicated by the indication mark, and the magnetic field sensor is deployed at a second position; such a process is repeated till all of the planned survey points are arranged.

Abstract: A method and a system for control and data processing in field operation with a ground electromagnetic instrument includes an aircraft flies autonomously to carry out patrol-check for the ground electromagnetic instrument. The aircraft is connected to the instrument through a high-speed wireless link to set the working parameters of the instrument, acquire the working state of the instrument, and acquire data from the instrument, etc. Thus, the workload of the operator is reduced and the operating efficiency is improved in the field operation.

Abstract: A WEM-based method for deep resource detection using sky waves refers to the technical field of deep resource detection. The proposed method of deep detection using sky waves improves the traditional “atmospheric-lithosphere” half-space propagation theory into a full-space “sky wave” theory of “ionosphere-atmosphere-rock layer”, that is, the influence of the ionosphere and the displacement current in the air are taken into consideration to obtain a new precise expression of “sky wave” response, which is suitable for full space, slow attenuation and long distance propagation. A receiving device for sky wave signal has been developed. Through theoretical model calculation and actual data measurement, it is known that it is possible to use the sky wave for detection within the scope of China's national territory to realize the high-precision electrical structural exploration within a depth of 10 kilometers and open a new era of artificial source electromagnetic detection.

Abstract: In a system for arranging survey points in field operation with a ground electromagnetic instrument, the position information of survey lines and survey points are planned and downloaded to an aircraft in advance. The survey lines and one survey point among survey points planned in advance is selected and the coordinate information of the survey point is acquired. The aircraft is controlled to fly to the physical geographic location of the survey point according to the coordinate information of the survey point in conjunction with positioning information acquired in real time. The aircraft hovers above the physical geographic location of the survey point and projects a predetermined indication mark to the ground. The detection instrument and electric field sensor are deployed at a first position indicated by the indication mark, and the magnetic field sensor is deployed at a second position; such a process is repeated till all of the planned survey points are arranged.

Abstract: A method and a system for control and data processing in field operation with a ground electromagnetic instrument includes an aircraft flies autonomously to carry out patrol-check for the ground electromagnetic instrument. The aircraft is connected to the instrument through a high-speed wireless link to set the working parameters of the instrument, acquire the working state of the instrument, and acquire data from the instrument, etc. Thus, the workload of the operator is reduced and the operating efficiency is improved in the field operation.

Abstract: A distributed electromagnetic method synchronization system and method involving a satellite communication and navigation system. The method includes the following steps: the transmitter and the receiver establish connection with the satellite respectively to realize the position and time synchronization; the transmitter and the receiver acquire the second-pulse-signal, and according to the second-pulse-signal to adjust their own temperature compensation crystal, so that the frequency reaches the preset value; in the field of operation, the transmitter and receiver through the satellite mutual communication, timely adjustment of the operation process. In the above-mentioned way, the communication function can be set in one place to facilitate the timely adjustment of the data acquisition process so as to ensure the quality of the collected data and improve the efficiency of the field operation.