Abstract: A digital twin based method for monitoring behavior of a passenger on an escalator includes: first, constructing a digital twin virtual scene of the escalator carrying the passenger; constructing a virtual person model in a physics engine, generating various types of risky behavior in reality, and outputting different types of behavior of a virtual person; second, through a human posture recognition method for monitoring behavior of a passenger, extracting a feature map as an input by means of a visual geometry group 19 (VGG19) pre-training network, to enter part affinity fields (PAFs) and a part confidence map (PCM), so as to complete recognition of human postures; classifying the human postures with a support vector machine; and performing emergency stop control on the escalator under risky behavior of the passenger according to a result of posture classification.

Abstract: According to various embodiments, a method, medium, and system for exporting log messages related to a particular job running in a micro services system is described in this disclosure. The method uses a mapping table to narrow down the search scope for finding relevant log files. The mapping table maps a job attribute combination to one or more micro services, and thus will direct the search for relevant log messages only to those log files related to the one or more micro services. The search scope can be further narrowed down using a start time and end time of the job. Once the relevant log files are found, log messages containing an identifier of the job can be extracted from the relevant log files for display or for a user to download. The mapping table can be automatically generated by parsing through historical files in a system non-busy time.

Abstract: A method, electronic device, and computer program product for processing data is disclosed. The method includes acquiring a configuration file for generating and sending a structured report, the structured report involving analysis of an application. The method also includes acquiring, based on an address of a data source in the configuration file, data from the data source to add the data to the structured report, the data source including the same type of data generated by the application. The method includes sending, based on an identifier of a target server in the configuration file, the structured report to the target server for analyzing the application. With this method, the format of a structured report to be acquired can be adjusted at any time without version upgrade, thereby saving time.

Abstract: Embodiments of the present disclosure provide a method, an electronic device, and a computer program product that involve exporting a log. The method includes acquiring a first set of attributes indicating a target asset among assets protected by a data protection product, a second set of attributes indicating target tasks executed on the target asset, and a third set of attributes indicating a computing resource running the data protection product. The method further includes determining an export time consumed to export a log of the target asset based on the first set of attributes, the second set of attributes, and the third set of attributes. With the embodiments of the present disclosure, the time required for exporting a log can be accurately estimated while the log is exported.

Abstract: According to various embodiments, a method, medium, and system for exporting log messages related to a particular job running in a micro services system is described in this disclosure. The method uses a mapping table to narrow down the search scope for finding relevant log files. The mapping table maps a job attribute combination to one or more micro services, and thus will direct the search for relevant log messages only to those log files related to the one or more micro services. The search scope can be further narrowed down using a start time and end time of the job. Once the relevant log files are found, log messages containing an identifier of the job can be extracted from the relevant log files for display or for a user to download. The mapping table can be automatically generated by parsing through historical files in a system non-busy time.

Abstract: The disclosure relates to a method for guiding landing of an unmanned aerial vehicle. The method for guiding landing of unmanned aerial vehicle includes: determining location information of the unmanned aerial vehicle over a target airdrome by using a plurality of position detectors in an airdrome auxiliary positioning system; generating corrected guidance information according to an offset vector between the location information and target location information, where the target location information is information representing any location within signal coverage of a guidance beacon of the target airdrome; and sending the corrected guidance information to the unmanned aerial vehicle, where the corrected guidance information is used to guide the unmanned aerial vehicle to fly into the signal coverage of the guidance beacon.

Abstract: A method, electronic device, and computer program product for processing data is disclosed. The method includes acquiring a configuration file for generating and sending a structured report, the structured report involving analysis of an application. The method also includes acquiring, based on an address of a data source in the configuration file, data from the data source to add the data to the structured report, the data source including the same type of data generated by the application. The method includes sending, based on an identifier of a target server in the configuration file, the structured report to the target server for analyzing the application. With this method, the format of a structured report to be acquired can be adjusted at any time without version upgrade, thereby saving time.

Abstract: The present invention discloses a terahertz metamaterial. The terahertz metamaterial includes a substrate and an electromagnetic loss resonant ring structure disposed on the substrate, where an electromagnetic modulation function is realized on a terahertz band by adjusting different structural sizes and square resistance of the electromagnetic loss resonant ring structure. In the present invention, the electromagnetic loss resonant ring structure is disposed on the substrate, and the electromagnetic modulation function is realized on the terahertz band by adjusting the different structural sizes and square resistance of the electromagnetic loss resonant ring structure, thereby simplifying processing steps of a terahertz device, reducing a processing cost, and enabling a terahertz technology to be widely used in the field of electromagnetic communication.

Abstract: The present invention discloses a terahertz metamaterial. The terahertz metamaterial includes a substrate and an electromagnetic loss resonant ring structure disposed on the substrate, where an electromagnetic modulation function is realized on a terahertz band by adjusting different structural sizes and square resistance of the electromagnetic loss resonant ring structure. In the present invention, the electromagnetic loss resonant ring structure is disposed on the substrate, and the electromagnetic modulation function is realized on the terahertz band by adjusting the different structural sizes and square resistance of the electromagnetic loss resonant ring structure, thereby simplifying processing steps of a terahertz device, reducing a processing cost, and enabling a terahertz technology to be widely used in the field of electromagnetic communications.

Abstract: An artificial microstructure used in artificial electromagnetic material includes a first line segment and a second line segment. The second line segment is perpendicular to the first line segment. The first line segment and the second line segment intersect with each other to form a cross-type structure. The present disclosure further relates to an artificial electromagnetic material using the artificial microstructure.

Abstract: The present invention relates to the bioactive components with the anti-proliferative property. In particular, the invention relates to one flavonol compound isolated from the root of Lasia spinosa Linn. Thwait or chemically synthesized and its specific anticancer/antitumor activity. This invention has a specific application in treating human esophageal cancer.

Abstract: The present invention discloses a Cassegrain satellite television antenna comprising a metamaterial plate. The metamaterial plate comprises a core layer. The core layer comprises core sublayers. Each core sublayer comprises a circular area and a plurality of annuli distributed around the circular area. According to the Cassegrain satellite television antenna of the present invention, the traditional parabolic antenna is replaced with a sheet-like metamaterial plate which is easier to process and has a lower cost. In addition, the present invention also provides a satellite television receiving system equipped with the above-mentioned Cassegrain satellite television antenna.

Abstract: Disclosed is an offset feed satellite television antenna comprising a metamaterial panel (100) arranged behind a feed (1). The metamaterial panel (100) comprises a core layer (10) and a reflective panel (200) arranged on a lateral surface of the core layer (10). The core layer (10) comprises at least one core layer lamella (11). The core layer lamella (11) can be divided into multiple belt areas on the basis of refractive indexes. With a fixed point as a center, the refractive indexes on the multiple belt areas are identical at a same radius, while the refractive indexes on each belt area decrease gradually as the radius increases. For two adjacent belt areas, the minimum value of the refractive indexes of the inner belt area is less than the maximum value of the refractive indexes of the outer belt area. A connection between the center and the feed (1) is perpendicular to the core layer lamella (11), while the center does not overlap the center of the core layer lamella (11).

Abstract: The present invention relates to the bioactive components with the anti-proliferative property. In particular, the invention relates to one flavonol compound isolated from the root of Lasia spinosa Linn. Thwait or chemically synthesized and its specific anticancer/antitumor activity. This invention has a specific application in treating human esophageal cancer.

Abstract: The present disclosure relates to a metamaterial for converging electromagnetic waves, which comprises a plurality of cubic metamaterial units arranged in a first array which takes a y direction as a column direction and a z direction perpendicular to the y direction as a row direction. The metamaterial units of each row have the same refractive index, and for the metamaterial units of each column, the refractive indices thereof for the electromagnetic waves decrease gradually from a middle metamaterial unit towards two ends of the column, with variations of the refractive indices between adjacent ones of the metamaterial units increasing gradually from the middle metamaterial unit towards the two ends of the column; and the metamaterial units are anisotropic to the electromagnetic waves. The metamaterial for converging electromagnetic waves of the present disclosure can achieve the function of converging electromagnetic waves, and has a smaller thickness compared to conventional metamaterials.

Abstract: A front feed satellite television antenna includes a metamaterial panel. The metamaterial panel includes a core layer and a reflective panel. The core layer includes a core layer lamella which further includes a circular area and multiple annular areas distributed around the circular area. Within the circular area and the annular areas, refractive indexes are identical at a same radius, and within the respective areas, the refractive indexes decrease gradually as radius increases. The minimum refractive index of the circular area is less than the maximum the refractive index of the annular area adjacent thereto. For two adjacent annular areas, the minimum refractive index of the annular area at the inner side is less than the maximum refractive indexes of the annular area at the outer side. The metamaterial panel can replace conventional parabolic antenna, thus facilitating manufacturing and processing, and further reducing costs.

Abstract: The present invention discloses a Cassegrain satellite television antenna comprising a metamaterial plate. The metamaterial plate comprises a core layer. The core layer comprises core sublayers. Each core sublayer comprises a circular area and a plurality of annuli distributed around the circular area. According to the Cassegrain satellite television antenna of the present invention, the traditional parabolic antenna is replaced with a sheet-like metamaterial plate which is easier to process and has a lower cost. In addition, the present invention also provides a satellite television receiving system equipped with the above-mentioned Cassegrain satellite television antenna.