Abstract: A method, system, and computer program product for recommending an initial database security model. The method may include identifying a plurality of nodes connected to a security network. The method may also include analyzing security characteristics of each node of the plurality of nodes. The method may also include identifying, from the security characteristics, key factors for each node. The method may also include calculating similarities between each node of the plurality of nodes. The method may also include building a self-organized centerless network across the plurality of nodes by grouping nodes with high similarities based on the similarities between each node, where the self-organized centerless network is a centerless network without a central management server, and includes groups of nodes from the plurality of nodes. The method may also include generating federated security models for the groups of nodes.

Abstract: The present disclosure discloses an advanced mental fatigue early warning system, electronic device and storage medium, including a data acquisition module, a preprocessing module, an adjustment ability calculation module, a fatigue early warning module, a communication module and a storage module; the data acquisition module is configured for obtaining pupil diameter data; the preprocessing module is configured for preprocessing the pupil diameter data, removing invalid data, and performing linear interpolation; the adjustment ability calculation module is configured for performing calculation and correcting the preprocessed pupil diameter data; the fatigue early warning module is configured for performing mathematical modeling, establishing an advanced prediction model, and calculating a remaining time for an upcoming mental fatigue occurs and issuing an alarm; the communication module is configured for uploading mental fatigue adjustment abilities and alarm methods; the storage module is configured for arc

Abstract: The present disclosure provides a joint control method for nitrogen and phosphorus emissions in farmlands, comprising: reducing nitrogen and phosphorus input during crop sowing or planting by applying composite organic material and chemical fertilizer, wherein the composite organic material comprises: 200-250 parts of edible fungi residues, 300-350 parts of charcoal and 5-10 parts of rhamnolipid; constructing a nitrogen-phosphorus retention layer by utilizing composite microbial agent in combination with 150 parts of edible fungi residues and 20 parts of straw-based hydrogel; constructing a barrier layer by utilizing composite material, and controlling downward leaching of nitrogen and phosphorus that are not absorbed by crops, wherein the composite material of the barrier layer comprises: 25-35 parts of straw-based hydrogel, 20-30 parts of edible fungi residues, 35-55 parts of bentonite and 5-10 parts of corn flour.

Abstract: The invention provides flow batteries and methods of using flow batteries that reduce loss of capacity. The loss of capacity may be mitigated by electrically oxidizing an organic species in the negolyte.

Abstract: A light-emitting device includes a semiconductor epitaxial structure including a first semiconductor layer, an active layer, and a second semiconductor layer, and having holes; a first insulation layer disposed on the semiconductor epitaxial structure and having first and second grooves; a first pad electrically connected to the first semiconductor layer through the first grooves; and a second pad electrically connected to the second semiconductor layer through the second grooves. A projection of the first pad does not overlap projections of the holes. A projection of the second pad does not overlap the projections of the holes. The first pad includes a first pad connection portion and first pad extension portions; the second pad includes a second pad connection portion and second pad extension portions. Projections of the second grooves fall between projections of the first and second pad extension portions. Two other aspects of the light-emitting device are also provided.

Abstract: The disclosure relates to a method performed by an electronic device of a base station. The method includes: obtaining beam priority information of a plurality of beams for a plurality of user equipments (UEs); obtaining inter-beam interference information of the plurality of beams; identifying, based on the beam priority information and the inter-beam interference information, one of a plurality of beam pairing sets comprising two or more beams among the plurality of beams; and performing communication with at least one of the plurality of UEs via the identified beam pairing set.

Abstract: Disclosed is a light-emitting device which includes a light-emitting element and a wavelength conversion layer, and light of a first wavelength emitted by the light-emitting element is converted into light of a second wavelength and light of a third wavelength through the wavelength conversion layer. The light-emitting element includes a first contact layer, and the reflectivity of the first contact layer to the third wavelength is greater than 85%, so that the reflectivity of the light of the second wavelength and the light of the third wavelength converted by the wavelength conversion layer and reflected to the surface of the light-emitting element may be increased, and the white light conversion efficiency and the light extraction efficiency of the light-emitting device are improved.

Abstract: A magnetic suspension type sensing system for space full-degree-of-freedom absolute poses is provided. The system includes a reference platform, multiple quasi-zero stiffness supporting legs and a platform to be tested. The reference platform and the platform to be tested are connected in a spherical hinge mode through the multiple quasi-zero stiffness supporting legs. Each of the multiple quasi-zero stiffness supporting legs includes a lower end spherical hinge, a lower end cover, a positive stiffness unit, a negative stiffness unit, a shaft, a lower end shell, an upper end shell and an upper end spherical hinge.

Abstract: A negative stiffness generating mechanism and a quasi-zero stiffness vibration isolator are provided. A housing is mounted on a base, and the axial relative positions of the housing and the base can be adjusted; a negative stiffness unit comprises inner-ring magnets, outer-ring magnets and a supporting shaft, the supporting shaft axially slides on the base and passes through the housing, the inner-ring magnets fixedly sleeve the supporting shaft, and the outer-ring magnets sleeve outside the inner-ring magnets and are divided into upper and lower groups of outer-ring magnets; the upper and lower groups of outer-ring magnets can synchronously move through a negative stiffness adjusting device; and the axial relative positions of the middle planes of the outer-ring and inner-ring magnets can be adjusted by adjusting the axial relative positions of the housing and the base. The isolator comprises a negative stiffness generating mechanism and a positive stiffness unit.

Abstract: A magnetic suspension type sensing system for space full-degree-of-freedom absolute poses is provided. The system includes a reference platform, multiple quasi-zero stiffness supporting legs and a platform to be tested. The reference platform and the platform to be tested are connected in a spherical hinge mode through the multiple quasi-zero stiffness supporting legs. Each of the multiple quasi-zero stiffness supporting legs includes a lower end spherical hinge, a lower end cover, a positive stiffness unit, a negative stiffness unit, a shaft, a lower end shell, an upper end shell and an upper end spherical hinge.

Abstract: Disclosed is a quasi-zero stiffness absolute displacement sensor based on electromagnetic positive stiffness, and relates to the technical field of vibration measurement. The quasi-zero stiffness absolute displacement sensor comprises an eddy current displacement sensor unit, a negative stiffness unit, an intermediate connector, a positive stiffness unit, a bottom shell and a motion axis. The damping of the mechanism can be effectively reduced, the service life of the system is prolonged, and the mechanism size is reduced. By adjusting the number of layers of permanent magnets and coils in the electromagnetic positive stiffness unit and the electromagnetic negative stiffness unit and controlling the magnitude of current in the coils, electromagnetic force between the permanent magnets and the electromagnetic coils can be changed, the magnitude of positive stiffness and the magnitude of negative stiffness are adjusted, and control over the stiffness of the whole system is achieved.

Abstract: Disclosed is a quasi-zero stiffness absolute displacement sensor based on electromagnetic positive stiffness, and relates to the technical field of vibration measurement. The quasi-zero stiffness absolute displacement sensor comprises an eddy current displacement sensor unit, a negative stiffness unit, an intermediate connector, a positive stiffness unit, a bottom shell and a motion axis. The damping of the mechanism can be effectively reduced, the service life of the system is prolonged, and the mechanism size is reduced. By adjusting the number of layers of permanent magnets and coils in the electromagnetic positive stiffness unit and the electromagnetic negative stiffness unit and controlling the magnitude of current in the coils, electromagnetic force between the permanent magnets and the electromagnetic coils can be changed, the magnitude of positive stiffness and the magnitude of negative stiffness are adjusted, and control over the stiffness of the whole system is achieved.

Abstract: A shadow artwork platform includes a light platform which includes a support base and a light source having a plurality of light illuminating elements supported on the support base, and a plurality of control spacers for spacedly and replaceably arranging a plurality of light shading elements in front of the plurality of light illuminating elements which is arranged for casting light beams towards the light shading elements to create the shadow artworks with various shadow patterns by replacing the light shading elements.

Abstract: A method of authenticating genuine products in an online shopping platform, including the steps of informing a buying agent about an online shopping order; giving a unique identification mark to the targeted product by a unique and non-replaceable identification item; videotaping at least one of the steps of purchasing the targeted product by the buying agent at the designated store and placing the unique and non-replaceable identification item to provide a video stream; and allowing the buyer to have access to the video stream.

Abstract: A method of authenticating genuine products in an online shopping platform, including the steps of receiving an online shopping order from a buyer through the online shopping platform, the order having information about a targeted product and a designated store; purchasing the targeted product at the designated store by a buying agent; putting a unique and non-replaceable identification item on the targeted product when the purchase transaction is completed; videotaping selection of the targeted product by the buying agent, the purchasing of the targeted product at the designated store, and putting the unique and non-replaceable identification item on the targeted product; and making the video captured accessible to the buyer of the targeted product.

Abstract: Methods, systems, and apparatuses are provide to perform automatic banding correction in captured images. For example, the methods receive from a plurality of sensing elements in a sensor array, first image data captured with a first exposure parameter, and second image data captured with a second exposure parameter. The methods partition first image data and second image data and determine values for each partition. The methods compute banding errors based on the determined values of the partitions for first image data and second image data. The methods also determine a banding error correction to one or more of first image data and second image data based on the banding errors. Further, the methods perform an automatic correction of the banding errors on one or more of first image data and second image based on the banding error correction.

Abstract: Methods, systems, and apparatuses are provide to perform automatic banding correction in captured images. For example, the methods receive from a plurality of sensing elements in a sensor array, first image data captured with a first exposure parameter, and second image data captured with a second exposure parameter. The methods partition first image data and second image data and determine values for each partition. The methods compute banding errors based on the determined values of the partitions for first image data and second image data. The methods also determine a banding error correction to one or more of first image data and second image data based on the banding errors. Further, the methods perform an automatic correction of the banding errors on one or more of first image data and second image based on the banding error correction.

Abstract: A method of authenticating genuine products in an online shopping platform, including the steps of informing a buying agent about an online shopping order; giving a unique identification mark to the targeted product by a unique and non-replaceable identification item; videotaping at least one of the steps of purchasing the targeted product by the buying agent at the designated store and placing the unique and non-replaceable identification item to provide a video stream; and allowing the buyer to have access to the video stream.

Abstract: A method of authenticating genuine products in an online shopping platform, including the steps of receiving an online shopping order from a buyer through the online shopping platform, the order having information about a targeted product and a designated store; purchasing the targeted product at the designated store by a buying agent; putting a unique and non-replaceable identification item on the targeted product when the purchase transaction is completed; videotaping selection of the targeted product by the buying agent, the purchasing of the targeted product at the designated store, and putting the unique and non-replaceable identification item on the targeted product; and making the video captured accessible to the buyer of the targeted product.

Abstract: An improved lead acid battery (LAB) battery may provide high charge acceptance and may be suitable for a wide range of applications, including a variety of new applications. The new battery can sustain 67% of the maximum capacity even at a very high charging rate of IOC. This battery may decrease the use of lead in comparison to prior lead acid battery designs by up to 50%.