Abstract: An apparatus to estimate a frequency offset in wireless networks is provided. The apparatus comprises: radio frequency (RF) circuitry to down-convert a signal from a base station to generate in-phase and quadrature (IQ) components, wherein the signal includes one or more repeated bursts; and a frequency offset estimator operatively coupled to the RF circuitry, the frequency offset estimator to estimate a frequency offset based on the IQ components and an iterative calculation of phase differences between different sets of bursts of the one or more repeated bursts.

Abstract: Provided herein is an apparatus including a hard drive base. A number of disks are rotatably connected to the hard drive base, and there are a number of disk gaps between the disks. A shroud extends in a circumferential span around the disks, wherein the shroud extends less than the circumference of the disks. The shroud is positioned between the disk gaps and an upwardly sloping gas channel. A number of arcuate gas channels are in the shroud, wherein each arcuate gas channel is horizontally aligned with a corresponding disk gap. The arcuate gas channels connect the disk gaps to the upwardly sloping gas channel.

Abstract: A container comprising a threshold assembly. The threshold assembly comprises an outer end plate, a horizontal connecting member and a middle connecting member. The outer end plate comprises a horizontal portion and a vertical portion; the horizontal member connects to a floor of the container; and the middle member connects to the plate and the horizontal member, wherein one end of the middle member extends to the intersection of the horizontal portion and the vertical portion of the plate; an opening and a clamping groove at the other end of the middle member; and an inserting portion at one end of the horizontal member for inserting into the clamping groove through the opening to connect the horizontal member and the middle member. When force is applied to the threshold assembly, gaps among the horizontal and middle members and the plate are sealed, preventing liquids from causing steel corrosion.

Abstract: A space-saving movable door/window system capable of being fully opened which belongs to the field of smart building technology includes a door/window panel mounting space, a door/window panel storage space and a door/window panel control module. The present invention adopts a lengthwise and widthwise moving system. All of the door/window panels can be entirely stored in the door/window panel storage space, making the door/window fully opened to spare all the occupied space. The door/window panel storage space may be located in a wall or outside the room to hide the stacked door/window panels. By controlling the operations of the moving system and the control system, the door/window panels are effectively connected to one another in an aligned manner and can move automatically, so the space-saving movable door/window system is convenient to use, space-saving, and can effectively improve space utilization ratio.

Abstract: The invention relates to an emulsifiable concentrate of an aminoindole amide compound having the structure of formula (I): and an amide having the structure of formula (II): wherein R1, R2, R3, R4, R5, R6, R7, R8, R11, R12, R13, and n are as defined herein, as well to formulations containing the same, and to methods of their preparation and use for treatment and protection of agricultural crops.

Abstract: The present disclosure provides a method and device for in-vehicle payment. A face image of an in-vehicle user and a geographic location of the in-vehicle user are received at a point of a ride route traveled by a vehicle occupied by the in-vehicle user. An image set associated with the geographic location is received from an image database using the geographic location of the in-vehicle user. The image set includes face images of a plurality of users. The face image of the in-vehicle user is compared with face images in the image set to determine an identity of the in-vehicle user. A fare deduction account corresponding to the in-vehicle user is identified using the identity of the in-vehicle user. A fare corresponding to the ride route is deducted from the fare deduction account.

Abstract: A storage container includes a base housing member coupled to an inner cover and including an inner cavity. The storage container further includes an outer cover coupled to the base housing member and covering the inner cover. A rack assembly includes a plurality of storage devices and is mounted within the inner cavity.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a virtual reality head-mounted apparatus are provided. One of the apparatus includes: an apparatus body being provided with a convex lens and a camera, the camera being located on a user side of the convex lens, and a lens of the camera facing an eye of the user to acquire eye pattern features of the user. The virtual reality head-mounted apparatus may acquire eye pattern features of the user without interrupting the displaying of virtual reality contents, and quickly and accurately perform identity verification on the user based on the eye pattern features.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a virtual reality (VR) head-mounted apparatus are provided. One of the apparatus includes: a first convex lens on a side of the apparatus close to a user's eye when the user wears the apparatus, a partial-reflection partial-transmission lens located in the apparatus and on a side of the first convex lens away from the user's eye; and a camera located between the first convex lens and the partial-reflection partial-transmission lens. The partial-reflection partial-transmission lens is positioned and configured to reflect infrared light from the user's eye to the camera. The VR head-mounted apparatus improves the acquisition accuracy of an infrared image of an eye of the user wearing the apparatus.

Abstract: Disclosed herein are expression constructs and methods for producing a protein of interest. According to some examples, an expression construct includes a nucleotide sequence encoding a fusion protein. To produce the protein of interest, the expression construct is transformed into a host cell, which is cultured under conditions that allow the expression of the fusion protein. The fusion protein has at least one expression unit; each expression unit has, sequentially, an affinity tag moiety, a spacer moiety, an enzymatic cleavage site, and a protein of interest moiety. The fusion protein is isolated from the host cell, solubilized, and refolded. The refolded fusion protein is cleaved to release the protein of interest.

Abstract: The present disclosure relates to internal combustion engines. The teachings thereof may be embodied in methods and devices for actuating an exhaust gas recirculation valve of a forced-induction internal combustion engine with exhaust gas recirculation. A method for building up the charge pressure required to avoid a drop in torque may include: detecting an acceleration indicator; in response, providing an increased target value for an exhaust gas recirculation rate; measuring an instantaneous actual charge pressure; determining a setpoint exhaust gas recirculation rate based on the increased target value, the instantaneous setpoint charge pressure, and the instantaneous actual charge pressure; calculating a control signal using the determined setpoint exhaust gas recirculation rate; and delivering the control signal to the exhaust gas recirculation valve to change its opening state.

Abstract: A method includes detecting noise in a laser output of a heat assisted magnetic recording device. The noise is converted into an electrical signal including a numerical value. A least significant digit of the numerical value is selected. The least significant digit is concatenated with another least significant digit from another detecting of another noise in another laser output to form a number.

Abstract: Methods, systems, and apparatus for a virtual reality (VR) head-mounted apparatus are provided. The apparatus includes: a convex lens on a side of the VR head-mounted apparatus close to an eye of a user when the user wears the VR head-mounted apparatus, one or more infrared light sources distributed at a periphery of the convex lens and providing infrared light compensation for the eye of the user corresponding to the convex lens, and a camera associated with the convex lens. A lens of the camera may face the eye of the user corresponding to the convex lens for infrared image acquisition of physiological features of the eye of the user.

Abstract: A motor (20) for use, e.g., in a lawn mower (1) includes a rotor (52), which has a circular-columnar shape and is rotatable about its axis. The rotor (52) includes a plurality of plate-shaped permanent magnets (172) and a rotor core (170), which has a circular-columnar shape and has a plurality of magnet holes (171) into which the permanent magnets (172) are respectively inserted such that the permanent magnets (172) extend in an axial direction and a circumferential direction of the rotor (52). Each magnet hole (171) is formed such that an aperture (174b, 274b, 374) directly-faces or adjoins a radially outer-side surface (172a) or a radially inner-side surface (172b) of the corresponding inserted permanent magnet (172).

Abstract: Methods, systems, and apparatus for a virtual reality (VR) head-mounted apparatus are provided. One of the apparatus includes an apparatus body and a heat-generating element. The apparatus body may comprise an installation space and a heat dissipating channel having a non-straight-line structure. The heat-generating element may be installed in the installation space, and two ends of the heat dissipating channel may be in connection with the installation space and the exterior of the apparatus body. The VR head-mounted apparatus provides improved heat dissipating capability without adversely affecting immersive VR experience.

Abstract: Methods, systems, and apparatus for a virtual reality (VR) head-mounted apparatus are provided. One of the apparatus includes a convex lens, a camera and a partial-reflection partial-transmission lens. The partial-reflection partial-transmission lens is located on a side of the convex lens towards a user when the user wears the VR head-mounted apparatus, and a lens surface of the partial-reflection partial-transmission lens is disposed obliquely to reflect an infrared image of an eye of the user to the camera. The VR head-mounted apparatus improves the acquisition accuracy for an infrared image of an eye of the user.

Abstract: A storage container includes a base housing member coupled to an inner cover and including an inner cavity. The storage container further includes an outer cover coupled to the base housing member and covering the inner cover. A rack assembly includes a plurality of storage devices and is mounted within the inner cavity.

Abstract: A method for ballistocardiography (BCG) and a BCG system ballistocardiography (BCG) system for heart beat determination are provided. The method includes digitizing a plurality of signals received from a corresponding plurality of sensors, estimating a plurality of smoothed cepstra corresponding to each of the plurality of digitized signals in response to a smoothed cepstrum analysis of a digital signal at a reception time of each of the plurality of digitized signals, and estimating a fused cepstrum for the plurality of digitized signals in response to the plurality of smoothed cepstra. The method further includes determining a heart rate in response to the plurality of smoothed cepstra and the fused cepstrum.