Abstract: Disclosed is a method for estimating database management system performance, in which a performance change ratio of a DBMS can be determined once a first knob group, a second knob group, and a data volume of active data in data managed by the DBMS are obtained, without actually configuring the second knob group in the DBMS, executing a job by the DBMS, and then observing the execution. In other words, the performance change ratio of the DBMS can be estimated without interacting with the DBMS. DBMS security can be ensured, performance measurement approaches are provided for self-tuning and self-management of the DBMS, and reliable and stable running of the DBMS is ensured.

Abstract: Systems and methods for novel ventilation that allows the patient to trigger or initiate the delivery of a breath are provided. Further, systems and methods for triggering ventilation based on signal distortion of a monitored patient parameter are provided.

Abstract: An impact- and vibration-proof lens module includes a fixing assembly, a circuit board, a lens assembly, and a buffering pad. The fixing assembly defines a chamber, and the circuit board is partially disposed in the chamber. The lens assembly is disposed on the circuit board, and the lens assembly is also partially disposed in the chamber. The buffering pad made of thermally conductive silicon is disposed in the chamber and is disposed between the circuit board and the fixing assembly. In the event of being dropped or suffering vibration, the buffering pad disperses and absorbs stress on the fixing assembly to prevent breakage.

Abstract: A mobile terminal and an antenna that includes a feeder and a radiating element. The radiating element includes a first radiating patch and a second radiating patch. The first radiating patch and the second radiating patch are located on one side of the feeder and form a loop together with the feeder. An adjustable component configured to control the feeder and the second radiating patch is disposed on the feeder between the first radiating patch and the second radiating patch. The first radiating patch has a first extension part extending to an opposing side of the feeder.

Abstract: The present invention relates to a separator film in a lithium battery, more specifically relates to a polyolefin microporous film and a preparation method thereof. The polyolefin microporous film has a porosity above 30% and below 65%, a median pore size above 10 nm and below 60 nm, a stress-strain (?-?) curve integral in Machine Direction (MD) and Transverse Direction (TD) directions simultaneously fulfilling the following definition: E=?0??(?)d?>150 J/m2; and the largest pore size, the smallest pore size and the median pore size fulfilling the following definition: 0.9<P<1.2, wherein P=(the largest pore size?the smallest pore size)/the median pore size. The polyolefin microporous film according to the present invention has high tenacity, small pore sizes, concentrated distribution of pore sizes, great stability for coiling, and enabling high number of battery cycles. When used as a separator film, battery manufacturing safety and the service life of the battery being made can be increased.

Abstract: An image search method and apparatus, an electronic device and a storage medium. The image search method can be applied to an electronic device, which comprises a camera. The electronic device acquires an image to be matched, a first position of the electronic device and the azimuth of the camera, determines from a preset scene database a target preset area in which the first position is located and a target preset azimuth interval in which the azimuth is located, and searches for a corresponding target preset image set, thereby determining a target image for the image to be matched.

Abstract: A processing cartridge, detachably installed in an electronic image forming device that includes a first pushing element and a second pushing element. The processing cartridge includes a developing roller and a first housing supporting the developing roller; a photo-sensitive drum and a second housing supporting the photo-sensitive drum; a first force receiving element, configured to be abutted against the second pushing element to separate the developing roller from the photo-sensitive drum; and a second force receiving element, configured to be abutted against the first pushing element for enabling the second force receiving element to push the first force receiving element to rotate about an axis. A rotation axis of the first force receiving portion is substantially perpendicular to a direction in which the processing cartridge is installed into or taken out of the electronic image forming device.

Abstract: Aspects for active alignment for assembling optical imaging systems are described herein. As an example, the aspects may include aligning an optical detector with an optical component. The optical component is configured to alter a direction of one or more light beams emitted from an image displayed by an optical engine. The aspects may further include detecting, by the optical detector, a virtual image generated by the one or more light beams emitted by the optical engine; and adjusting, by a multi-axis controller, an optical path of the one or more light beams based on one or more parameters of the virtual image collected by the optical detector.

Abstract: A hidden type holder device includes: a stationary assembly, a movable assembly, and a first return spring, the movable assembly is accommodated in the stationary assembly and movable to the inside or outside of the stationary assembly, the movable assembly has a retractable holder assembly for accommodating an article, and two opposite end portions of the return spring are respectively mounted on the stationary assembly and the movable assembly.

Abstract: Systems and methods for novel ventilation that allows the patient to trigger or initiate the delivery of a breath are provided. Further, systems and methods for triggering ventilation based on signal distortion of a monitored patient parameter are provided.

Abstract: A transmission cable is provided to implement high-speed inter-device interconnection and intercommunication. The transmission cable includes a positive dispersion transmission section, a negative dispersion transmission section, and a dispersion matching section. A cross-sectional diameter of the positive dispersion transmission section is less than a cross-sectional diameter of the negative dispersion transmission section. The dispersion matching section is configured to connect the positive dispersion transmission section and the negative dispersion transmission section. The transmission cable can implement dispersion cancellation to reduce total group delay.

Abstract: A camera module includes a circuit board; and a lens module electrically connected with the circuit board. The lens module is configured to be capable of deformed when being applied a voltage thereon so as to change a focus length of the lens module.

Abstract: A rotatable armrest includes: a housing; a button system; and a hinge system engaged to the button system, in which the button system and the hinge system are provided in the housing, in which the hinge system includes a hinge shaft, and the rotatable armrest is fixed at a first position, a second position, or a third position by being rotated about the hinge shaft, and in which the rotatable armrest is configured to be positioned to be folded downward at the first position, the rotatable armrest is configured to be positioned to be directed forward horizontally at the second position, and the rotatable armrest is configured to be positioned to be directed rearward horizontally at the third position.

Abstract: Cryptosporidium parvum is a highly prevalent zoonotic and anthroponotic protozoan parasite that causes a diarrheal syndrome in children and neonatal livestock, culminating in growth retardation and mortalities. Disclosed herein are inhibitors against the enzymatic activity of recombinant CpLDH protein that were identified. The inhibitors were tested for anti-Cryptosporidium effect using in vitro infection assays of HCT-8 cells monolayers. Compounds NSC158011 and NSC10447 were identified to inhibit the proliferation of intracellular C. parvum in vitro, with IC50 values of 14.88 and 72.65 ?M, respectively. At doses tolerable in mice, both NSC158011 and NSC10447 significantly reduced the shedding of C. parvum oocysts in infected immunocompromised mice's feces and prevented intestinal villous atrophy as well as mucosal erosion due to C. parvum. These findings have unveiled anti-Cryptosporidium drug candidates that can be explored further for the development of therapeutic agents against C. parvum infections.

Abstract: A Flutter-based compiling method, a compiling device, an executing method, a computer-readable storage medium, and a computer device are provided. The Flutter-based compiling method includes: receiving configuration content; in response to the configuration content, compiling and generating an executable file, where the executable file includes at least two of a Native component, a Flutter Native component and a Flutter dynamic component, and is configured to generate a routing table during operation, to enable the Native component, the Flutter Native component and the Flutter dynamic component to communicate with each other through the routing table.

Abstract: Training at the proper level of effort is important for athletes whose objective is to achieve the best results in the least time. In running, for example, pace is often monitored. However, pace alone does not reveal specific issues with regard to running form, efficiency, or technique, much less inform how training should be modified to improve performance or fitness. A sensing system and wearable sensor platform described herein provide real-time feedback to a user/wearer of his power expenditure during an activity. In one example, the system includes an inertial measurement unit (IMU) for acquiring multi-axis motion data at a first sampling rate, and an orientation sensor to acquire orientation data at a second sampling rate that is varied based on the multi-axis motion data.

Abstract: An electrical connector assembly includes an electrical plug connector and an electrical receptacle connector corresponding to the electrical plug connector. The electrical plug connector includes a plug insulated housing as well as plug terminals and buckling portions on the plug insulated housing. The electrical receptacle connector includes a receptacle insulated housing as well as receptacle terminals and locking components on the receptacle insulated housing. The locking components at the two sides of the electrical receptacle connector are firmly buckled with the buckling portions at the two sides of the electrical plug connector. Therefore, during the use of the electrical connector assembly, the electrical plug connector can be prevented from detaching off the electrical receptacle connector.

Abstract: A lens module includes a printed circuit board, a lens component, and at least two electric conductors. The lens component includes a first lens and a microscope base, the first lens is formed on the microscope base, the microscope base is formed on the printed circuit board, and the first lens is electrically conductive and deforms under voltage. The first lens is electrically connected to the printed circuit board by the electric conductors. The printed circuit board outputs a voltage to the first lens through the electric conductors; the first lens deforms according to the voltage thereby changing a focal distance of light passing through the first lens. The disclosure also relates to an electronic device using the lens module. The lens module can has a zoom function and has a litter volume.

Abstract: An antenna apparatus includes a radiator, a first grounding branch, and a second grounding branch. The radiator includes a feed point, a first radiation section, and a second radiation section. The first radiation section and the second radiation section are disposed on two sides of the feed point by a first gap and a second gap. A first ground end is disposed at one end of the first radiation section away from the first gap, and a second ground end is disposed at one end of the second radiation section away from the second gap. The first and second grounding branches intersect with the radiator. A matching circuit is coupled in series in the first grounding branch, and a first high-frequency filter is coupled in series in the second grounding branch.

Abstract: A rotatable optical module able to aim structured light in different directions includes a driver and an optical assembly positioned at a side of the driver and connected to the driver. The optical assembly projects structured light. The driver drives the optical assembly to rotate, thereby changing the aiming direction of the structured light. An electronic device using such module and placed directly between two target objects is able to function as a meter of the distance between the objects in addition to mapping the contours of each.