Abstract: Provided is an unbalanced sample data preprocessing method, which includes: a data acquisition request is received and initial data is acquired according to the data acquisition request, and the initial data is classified according to a preset classification rule to obtain first-class sample sets and second-class sample sets; characteristics of K first sample points extracted are analyzed to obtain a new data characteristic of the first-class sample sets; a new data label of the first-class sample sets is generated according to a first label corresponding to the first-class sample sets; a ratio between the number of first-class sample sets and the number of second-class sample sets is calculated; and new data of the first-class sample sets is generated according to the new data characteristic and the new data label, and the amount of new data is adjusted according to the ratio to increase the number of first-class sample sets.

Abstract: Embodiments of the present disclosure provide a data protection method, an electronic device, and a computer program product. The method includes determining an object feature for each protection object in a set of protection objects that generate protected data, the set of protection objects including at least one protection object configured with a predetermined data protection strategy. The method further includes determining a set of candidate objects belonging to the same class as the at least one protection object from the set of protection objects according to the determined object features. The method further includes configuring the predetermined data protection strategy to at least one candidate object in the set of candidate objects.

Abstract: Provided are a water-soluble Pd(II) complex, a synthesis method thereof and use thereof as a catalytic precursor. The complex has a chemical name, ammonium dinitrooxalato palladium (II), and a molecular formula of (NH4)2[Pd(NO2)2(C2O4)]·nH2O (n is the number of crystal water). The Pd(II) complex is synthesized by using PdCl2 or [Pd(NH3)2Cl2] as a starting material which is firstly converted into [Pd(NH3)4]Cl2 in ammonium hydroxide, followed by a chemical reaction between [Pd(NH3)4]Cl2 and excessive NaNO2 to produce trans-[Pd(NH3)2(NO2)2] via ligand substitution mechanism, and finally dissolving trans-[Pd(NH3)2(NO2)2] in an aqueous solution of oxalic acid leads to the formation of the target product (NH4)2[Pd(NO2)2(C2O4)]·2H2O. The complex does not contain chlorine and other elements that are harmful to a catalyst, is readily soluble in water and has a low thermal decomposition temperature.

Abstract: An embodiment includes generating a caller list of callers that issue requests for calling a designated program at runtime. The embodiment also includes generating an authorized caller list of authorized callers allowed to call the designated program, wherein the authorized callers are selected from among callers on the caller list. The embodiment also includes generating an authorization key for each of the authorized callers that the designated program will require as a condition for completing call requests.

Abstract: A magnetoresistive random access memory (MRAM) device includes a first array region and a second array region on a substrate, a first magnetic tunneling junction (MTJ) on the first array region, a first top electrode on the first MTJ, a second MTJ on the second array region, and a second top electrode on the second MTJ. Preferably, the first top electrode and the second top electrode include different nitrogen to titanium (N/Ti) ratios.

Abstract: The present invention relates to monobactam compounds of Formula I: and pharmaceutically acceptable salts thereof. The present invention also relates to compositions which comprise a monobactam compound of structural formula I or a pharmaceutically acceptable salt thereof, and a pharmaceutically acceptable carrier. The invention further relates to methods for treating a bacterial infection comprising administering to the patient a therapeutically effective amount of a compound of structural formula I, either alone or in combination with a therapeutically effective amount of a second beta-lactam antibiotic.

Abstract: A device includes a first buried layer over a substrate, a second buried layer over the first buried layer, a first well over the first buried layer and the second buried layer, a first high voltage well, a second high voltage well and a third high voltage well extending through the first well, wherein the second high voltage well is between the first high voltage well and the third high voltage well, a first drain/source region in the first high voltage well, a first gate electrode over the first well, a second drain/source region in the second high voltage well and a first isolation region in the second high voltage well, and between the second drain/source region and the first gate electrode, wherein a bottom of the first isolation region is lower than a bottom of the second drain/source region.

Abstract: A method for testing burning performance of a dark-colored cigarette using a dark-colored cigarette paper is provided. The dark-colored cigarette paper has a grayscale less than 255. The method includes: simulating, by a robotic arm, a cigarette smoking process and environment; acquiring, by a full-vision camera system, an image of a burn line and ash column region of the dark-colored cigarette; and analyzing a burning performance indicator of the dark-colored cigarette according to coordinate information of the burn line and ash column region. The method is based on a surface reflection characteristic of the dark-colored cigarette paper and a principle of optical reflection to light and highlight an edge of the dark-colored cigarette sample by a light source at a certain angle from a side. In this way, the method forms a chromatic aberration to localize the dark-colored cigarette sample, thereby testing the burning performance of the dark-colored cigarette sample.

Abstract: The present invention provides a liquid crystal lens panel and a display device. The liquid crystal lens panel comprises a first substrate (10) and a second substrate (20) that are opposite to each other, and a liquid crystal layer (30) provided between the first substrate (10) and the second substrate (20); the first substrate (10) comprises a first structural layer (12) provided on a first base (11) and a first orientation layer (13) provided on the first structural layer (12); the second substrate (20) comprises a second structural layer (22) provided on a second base (21) and a second orientation layer (23) provided on the second structural layer (22); on a plane parallel to the liquid crystal lens panel, at least one of the first orientation layer (13) and the second orientation layer (23) comprises multiple orientation areas, orientation pretilt angles of at least two orientation areas are different.

Abstract: An embodiment for automatically controlling peripheral devices based on online meeting participant information. The embodiment may detect participants of an online meeting and generate a participant information table. The embodiment may generate a participant group table including one or more preliminary participant groups based on the participant information. The embodiment may generate and send audio through peripheral devices associated with at least one participant in each of the one or more preliminary participant groups to identify the participants in physically shared meeting spaces. The embodiment may update the participant group table to include confirmed participant groups based on the identified participants in the physically shared meeting spaces. The embodiment may determine a presenter for each of the confirmed participant groups and update the participant information.

Abstract: An approach for managing data set access based on data set relevance. The approach monitors data set access activities associated with a user. The approach detects access of a first data set by the user. The approach determines a group of data sets associated with the first data set based on a data set mapping associated with the user. The approach recalls one or more data sets of the group of data sets from a slower storage device to a faster storage device.

Abstract: A preparation method and a device for a seawater desalination-seawater extraction uranium membrane lining are provided. The preparation method is as follow: the lining is configured as a finished product for standby through the following process, including cleaning, drying, restoration of circular, generating burrs, fixing the length of burrs; the device includes the first module, the second module, the third module, the fourth module and the fifth module. The present invention has the advantages of simple operation, short time, low cost and obvious treatment effect, the bonding strength between the separation function layer and the lining is enhanced, and the separation function layer is not easy to fall off, the physical damage resistance is greatly increased, it is not easy to fall off and the initial bubble point pressure of the prepared enhanced film is high.

Abstract: A switching converter and a low-voltage startup circuit is provided. The low-voltage startup circuit includes a comparator and a substrate voltage control module. The comparator performs a comparison between an input voltage and a reference voltage and obtain a voltage detection signal according to a result of the comparison. The substrate voltage control module adjusts a substrate voltage of a main switching transistor according to the voltage detection signal, wherein when the voltage detection signal indicates that the input voltage is lower than/equal to the reference voltage, the substrate voltage control module increases the substrate voltage of the main switching transistor, and then a turn-on threshold voltage of the main switching transistor can be reduced, so that the main switching transistor may be normally turned on when the input voltage is low, and the low-voltage startup capability of the switching converter is improved.

Abstract: A supported metallocene catalyst includes a carrier and a metallocene component. The carrier includes an inorganic oxide particle and an alkyl aluminoxane material. The inorganic oxide particle includes at least one inorganic oxide compound selected from the group consisting of an oxide of Group 3A and an oxide of Group 4A. The alkyl aluminoxane material includes an alkyl aluminoxane compound and an alkyl aluminum compound that is present in amount ranging from greater than 0.01 wt % to less than 14 wt % base on 100 wt % of the alkyl aluminoxane material. The metallocene component is supported on the carrier, and includes one of a metallocene compound containing a metal from Group 3B, a metallocene compound containing a metal from Group 4B, and a combination thereof. A method for preparing the supported metallocene catalyst and a method for preparing polyolefin using the supported metallocene catalyst are also disclosed.

Abstract: A polyurethane foam may include a base polyol component, a phosphorous polyol component, an expandable graphite, and melamine. The polyurethane foam may have a VO rating based on a UL94 flame retardancy test performed at a polyurethane foam thickness of 3.5 mm and a polyurethane foam density of 380 kg/m3.

Abstract: A device includes first and second semiconductor fins, first, second, third and fourth fin sidewall spacers, and first and second epitaxy structures. The first and second fin sidewall spacers are respectively on opposite sides of the first semiconductor fin. The third and fourth fin sidewall spacers are respectively on opposite sides of the second semiconductor fin. The first and third fin sidewall spacers are between the first and second semiconductor fins and have smaller heights than the second and fourth fin sidewall spacers. The first and second epitaxy structures are respectively on the first and second semiconductor fins and merged together.

Abstract: A magnetoresistive random access memory (MRAM) structure, including a substrate and multiple MRAM cells on the substrate, wherein the MRAM cells are arranged in a memory region adjacent to a logic region. An ultra low-k (ULK) layer covers the MRAM cells, wherein the surface portion of ultra low-k layer is doped with fluorine, and dents are formed on the surface of ultra low-k layer at the boundaries between the memory region and the logic region.

Abstract: The present disclosure provides use of fructose in preparing a drug for treating a cerebral ischemic stroke, and relates to the technical field of biomedicine. In the present disclosure, an ischemic injury cell model and an ischemic injury animal model are established, and fructose treatment is conducted on the injury models; and it is found that the fructose can regulate energy metabolism and redox metabolism of neurons, and reduce an ischemic injury of model cells and model animals. Specifically, the present disclosure includes: reducing a neuronal mortality after the ischemic injury, reducing an area of cerebral infarction in animals with the ischemic injury, and improving neurobehavioral characteristics of the animals.

Abstract: The present disclosure provides a three-dimensional display device, a driving method and manufacturing method therefor.

Abstract: Provided by the present disclosure are an image acquisition device, an image acquisition apparatus, an image acquisition method and a manufacturing method. The image acquisition device includes: image sensing member groups each including a plurality of image sensing members, and each image sensing member includes a photosensitive assembly with photosensitive components, and a lens assembly covering a photosensitive side of the photosensitive assembly; and shielding portions corresponding to the photosensitive components in a one-to-one correspondence. Each image sensing member group corresponds to a photography depth, and the plurality of image sensing member groups correspond to a plurality of photography depths. For the plurality of image sensing member groups at least one of following is included: the arrangement modes of the image sensing members in the image sensing member groups are different, and camera intrinsic parameters of the image sensing members in the image sensing member groups are different.