Abstract: The present application provides a system for unmanned aerial vehicle (UAV) parachute landing. An exemplary system includes a detector configured to detect at least one of a flight speed, a wind speed, a wind direction, a position, a height, and a voltage of a UAV. The system also includes a memory storing instructions and a processor configured to execute the instructions to cause the system to: determine whether to open a parachute of the UAV in accordance with a criterion, responsive to the determination to open the parachute of the UAV, stop a motor of the UAV that spins a propeller of the UAV, and open the parachute of the UAV after stopping the motor of the UAV for a first period.

Abstract: A package structure is provided. The package structure includes an encapsulant and an interposer. The encapsulant has a top surface and a bottom surface opposite to the top surface. The interposer is encapsulated by the encapsulant. The interposer includes a main body, an interconnector, and a stop layer. The main body has a first surface and a second surface opposite to the first surface. The interconnector is disposed on the first surface and exposed from the top surface of the encapsulant. The stop layer is on the second surface, wherein a bottom surface of the stop layer is lower than the second surface.

Abstract: Embodiments disclosed herein may include a method for developing a photopatterned metal oxo photoresist. In an embodiment, the method may include pre-treating the photopatterned metal oxo photoresist with a pre-treatment process, developing the photopatterned metal oxo photoresist with a thermal dry develop process to selectively remove a portion of the photopatterned metal oxo photoresist and form a resist mask. In an embodiment, the thermal dry develop process includes a first sub-operation, and a second sub-operation that is different than the first sub-operation. In an embodiment, the process further includes post-treating the resist mask with a post-treatment process.

Abstract: A cathode material and a method for preparing the same, lithium ion battery provided. The cathode material includes secondary particle which includes a plurality of primary particles, where the primary particle includes an active material having a chemical formula LibNixCoyMzRwO2, where 0.95?b?1.10, 0.8?x<1, 0<y+z+w?0.2, x+y+z+w=1, 0.0001?w?0.003; M is selected from at least one of Mn and Al, R is a metal; Phosphate compound coating layer are uniformly distributed on the surface of the cathode material, including a first coating layer and a second coating layer, where the first coating layer forms on the surface of the primary particle, the second coating layer forms on the surface of the secondary particle. The cathode material of this application can effectively improve the rate performance, thermal and cycling stability of lithium battery, and has the characteristics of low cost and easy large-scale production.

Abstract: An elliptical trainer with incline adjustment mechanism includes a frame, a link assembly, a pedal assembly and an adjustment mechanism. The frame has a base member and a supporting member. The supporting member defines an inner space. The link assembly has two swinging arms. The pedal unit has two pedal arms. The adjusting mechanism has a shaft, a sleeve member, two coupling members, and two links corresponding to the coupling members. When the sleeve member moves along the shaft, the coupling members and the links are driven by the sleeve member, such that the pedal arms are driven to move relative to the base member. The shaft is disposed in the inner space, preventing the shaft from protruding outward. The coupling members are pivotally connected to the supporting member to evenly distribute the weight of the coupling members and the links.

Abstract: A method for determining a consistency coefficient of a power-law cement grout includes: determining a water-cement ratio of the power-law cement grout; according to engineering practice requirements, determining a time required to determine the consistency coefficient of the power-law cement grout; and obtaining the consistency coefficient of the power-law cement grout. The method is accurate and reliable, requires less calculation, etc.; and has very high practical value and popularization value in environmental protection and ecological restoration.

Abstract: The present disclosure provides a package with a semiconductor structure and a method for manufacturing the semiconductor structure. In some embodiments, a photonic semiconductor structure includes a substrate having a first side and a second side opposite to each other, a first redistribution layer disposed on the first side, an interconnect structure disposed on the second side of the substrate, a metal reflector disposed in the interconnect structure, a dielectric layer disposed over the interconnect structure, and a grating coupler disposed in the dielectric layer and overlapping the metal reflector.

Abstract: A photographing device may include an image sensor to capture a first image; a first quick release interface to detachably connect with at least one expansion structure; and a first processor configured to: control the photographing device to perform an operation based on a first instruction input by a user at the photographing device and a second instruction sent by the expansion structure under a condition that the photographing device is connected with the expansion structure. The operation may comprise controlling the image sensor to capture the first image.

Abstract: A laser automatic compensation control device includes a controller, a digital array, a decoder, a compensation array and a synchronizer. The controller is configured for receiving a number of laser energy signals and comparing each laser energy signal with a corresponding preset energy value to obtain a corresponding output digital signal. The digital array is electrically connected to the controller and configured for storing the output digital signals. The decoder is electrically connected to the digital array and configured for converting the output digital signals into a number of analog compensation signals. The compensation array is electrically connected to the decoder and configured for storing the analog compensation signals. The synchronizer is electrically connected to the compensation array and configured for receiving the analog compensation signals, and synchronously outputting the analog compensation signals to a laser diode array.

Abstract: A circuit board assembly is applied to the field of electronic communications technologies to resolve a prior-art heat dissipation problem of a circuit board. The circuit board assembly combines, on a second circuit board, low-speed signals transmitted between a plurality of I/O modules and an IC chip, and then transmits the combined low-speed signals to the IC chip by using a low-speed cable. A low-speed signal sent by the IC chip to the plurality of I/O modules is extended to a plurality of low-speed signals on the second circuit board, and then the plurality of low-speed signals are separately sent to the plurality of I/O modules. This may be applied to a scenario in which a relatively large quantity of electronic components need to be disposed on a circuit board.

Abstract: A treadmill with an anti-entrapment function allows a user to stand on the treadmill and includes a running unit, a control unit, and a sensing unit. The running unit includes two lateral bases, a driving roller, a driven roller, and a running belt. Each lateral base has a bottom end portion. The sensing unit includes a guard bar pivotally provided at the bottom end portions and at least one sensing member. When the user is accidentally pulled into the gap between the running belt and one of the lateral bases, the guard bar will be subjected to an external force and thus rotated downward about a rotation axis, thereby driving the at least one sensing member to send a warning signal to the control unit, in order for the control unit to control the rotation speed of the driving roller accordingly, lest the user be pulled deeper into the gap.

Abstract: A display panel, comprising a first insulating structural layer, a first crack detection line, a second insulating structural layer and a second crack detection line which are sequentially arranged on a substrate, wherein the first crack detection line and the second crack detection line are both located in a peripheral area and are arranged around a display area, one end of the first crack detection line is configured to receive a detection signal, and the other end of the first crack detection line is configured to output a first output signal, and one end of the second crack detection line is configured to receive a detection signal and the other end of the second crack detection line is configured to output a second output signal.

Abstract: A positioning system and a positioning method based on radio frequency identification techniques (RFID) are provided. The positioning system includes in-vehicle devices, RFID readers and a server. The in-vehicle devices each includes a positioning device, an image capturing device and an image recognition module. The positioning device obtains a positioning location. The image capturing device captures a driving image. The image recognition module identifies adjacent vehicles, adjacent license plate information, and road attributes, and calculates relative location information. Each of the RFID readers reads a vehicle tag of one of the vehicles passing by, so as to mark a reference vehicle and generate reference vehicle information. A positioning adjustment module of the server determines whether the target vehicle is a reference vehicle, has been the reference vehicle or is a non-reference vehicle, and adjusts the positioning location of the target vehicle in different ways, accordingly.

Abstract: A transistor substrate is provided. The transistor substrate includes a first electrode and a second electrode. The first electrode has a slit. The slit includes a curved portion. The first electrode is used for receiving a common voltage signal. The second electrode overlaps the first electrode. The second electrode and the curved portion of the slit have an overlapping region, and an area of the overlapping region is 0.2 times to 0.8 times an area of the curved portion.

Abstract: A bicycle frame set includes a front fork, a head tube, a main tube, a seat tube, and a seat stay. The front fork includes a right fork leg and a left fork leg. The front fork is rotatably coupled to the head tube. The main tube is connected to the head tube. The seat tube is connected to the main tube, the seat tube being configured to connect to a seat post. The seat stay includes a first portion connected to the seat tube at a front end of the first portion of the seat stay. When a rear wheel and a front wheel are mounted to the bicycle frame set, the first portion of the seat stay extends in a horizontal direction substantially parallel with respect to a ground plane supporting the rear wheel and the front wheel.

Abstract: A bicycle frame set includes a front fork, a head tube, a main tube, a seat tube, and a seat stay. The front fork includes a right fork leg and a left fork leg, the right fork leg being substantially parallel to the left fork leg. The front fork is rotatably coupled to the head tube. The main tube is connected to the head tube. The seat tube is connected to the main tube, the seat tube being configured to be connected to a seat post. The seat stay is extending from the seat tube.

Abstract: The present invention discloses a collapsible side panel structure of a roof panel, set upon the outermost rod of the roof panel and includes at least one first base unit; at least one second base unit; a fastener; and a side panel. With the implementation of the present invention, the side panel can be raised and fixed securely to contain and protect small objects or luggage, or the side panel can be set flat on the roof panel and fixed securely to contain larger or wider objects. Together with the invention of the axis deviation between the rotation axis of the side panel and the axis of the first and second through holes, the side panel can be really set flat on or set vertically standing on the roof panel.