Abstract: Certain aspects of the present disclosure generally relate to voltage-controlled oscillators (VCOs) using a lowered or an adjustable negative transconductance (?gm) compared to conventional VCOs. This ?gm degeneration technique suppresses the noise injected into an inductor-capacitor (LC) tank of the VCO, thereby providing lower signal-to-noise ratio (SNR) for a given VCO voltage swing, lower power consumption, and decreased phase noise. One example VCO generally includes a resonant tank circuit, an active negative transconductance circuit connected with the resonant tank circuit, and a bias current circuit for sourcing or sinking a bias current through the resonant tank circuit and the active negative transconductance circuit to generate an oscillating signal. The active negative transconductance circuit includes cross-coupled transistors and an impedance connected between the cross-coupled transistors and a reference voltage.

Abstract: Systems and methods are provided for displaying and presenting content. When presenting content in real time, contextual-zoom-focus and/or dynamic-zoom-focus may be placed on selected portions of the content. For example, the content may be zoomed and the selected portions of content may be repositioned to a central area of a display. Additionally, context may be maintained for the selected portions of content by at least partially displaying nearby content. In some cases, portions of content may be displayed in a progressive manner along a selected display path. Accordingly, context for the portions of content may be maintained along the display path. In some cases, placing contextual-zoom-focus and/or dynamic-zoom-focus on portions of content may be animated and the portions of content may perceptively zoom and glide into focus.

Abstract: Systems, methods, and non-transitory computer-readable media can determine user input that was provided to authenticate a user, the user input including a plurality of characters. A first input delay pattern corresponding to the user input is determined. A determination is made that the first input delay pattern satisfies an input delay pattern corresponding to a password for a user account. The user is then authenticated.

Abstract: An inner detecting device for subsea oil and gas pipeline includes a support shaft defining a sealed chamber therein; a packer cup coupled to the support shaft; a hinge assembly coupled to the support shaft, swinging with respect to the support shaft in a radial direction and sliding with respect to the support shaft in an axial direction; a magnetic detector connected to the hinge assembly to move with respect to the support shaft in the radial and axial directions, and the magnetic detector tending to move away from the support shaft in the radial direction; a battery pack; an electric recorder electrically connected to the battery pack; and a mileage recorder recording a travel distance of the inner detecting device within the pipeline.

Abstract: A searchlight includes a lamp housing provided with a snap-action switch and/or a photo-electric switch, a support pivotally supporting the lamp housing from below and a lamp assembly pivotally installed inside the lamp housing; the lamp assembly has a back provided with a positioning lever for use in touch with the snap-action switch of the lamp housing; and the support has a top provided with a positioning lever for use in interrupting the light path of the photoelectric switch of the lamp housing; due to possessing aforesaid structure the searchlight therefore has a function of automatically returning to starting position when power supply is switched off.

Abstract: A method for detecting a defect of a metal plate includes selecting N controllable emitting electromagnetic acoustic transducers EMATs as excitation transducers, and selecting M omnidirectionally receiving EMATs as receiving transducers, exciting an ultrasonic guided wave in a metal plate by a nth controllable emitting EMAT with a predetermined emission angle; determining whether each of M1 omnidirectionally receiving EMATs and the nth controllable emitting EMAT form a scattering group; for the scattering group, solving a position of a scattering point and a direction of a scattering side according to a distance between Tn and Rm1, the emission angle and a travel time of the ultrasonic guided wave; performing a curve fitting on all the scattering points in directions of respective scattering sides to obtain a contour image of the defect.

Abstract: According to embodiments, a drive circuit includes a control portion configured to, when a duty ratio is set to a first predetermined value, and a load apparatus is in an overload state, set the duty ratio to a second predetermined value smaller than the first predetermined value during a predetermined time period.

Abstract: Disclosed are a method and device for compressing and reconstructing data. The method includes: disposing a transmitting EMAT array and a receiving EMAT array; exciting a Lamb wave, receiving the Lamb wave, subjecting the Lamb wave to narrowband filtering with the narrowband frequency, to form detecting data x(n); analysing the detecting data with a DFT; reconstructing original detecting data and calculating a reconstruction error according to the measurement vector and the recovery matrix by using a TLBO algorithm; optimizing measurement vector and recovery matrix; transmitting the measurement vector to a supervisory device.

Abstract: A rural bulk organic waste pollutant source comprehensive treatment system including a solid high-temperature aerobic fermentation reactor, a liquid high-temperature aerobic fermentation reactor and a multifunctional boiler is provided. A rural bulk organic waste pollutant source comprehensive treatment method. For excretion waste of a livestock farm adopting the technology of manure cleaning by urine submerging, a solid-liquid separation is firstly performed thereto, wherein solid is conveyed to the solid high-temperature aerobic fermentation reactor and fermented to produce solid organic fertilizers, and liquid is conveyed to the liquid high-temperature aerobic fermentation reactor and fermented to produce liquid organic fertilizers.

Abstract: A remote real-time monitoring system based on cloud computing is disclosed, comprising: a monitored terminal which is a terminal for collecting data and processing control on site, a management terminal which is a user terminal for performing remote monitoring and managing on the monitored terminal, and a cloud monitoring platform. The monitored terminal and the management terminal are connected to the cloud monitoring platform through a network comprising GPRS, 3G broadcast TV network, telecommunication network, power carrier network and satellite via the Internet. A monitoring service system operated on the cloud monitoring platform stores, analyzes and computes data sent by the monitored terminal. A monitoring service system, a fault diagnosis system and a report analysis system and etc. are also mounted to monitor states of the monitored terminal and pre-warn a fault in real time.

Abstract: Various embodiments of the present technology may comprise methods and apparatus for a CCD image sensor. The image sensor may comprise a center channel disposed along a horizontal center line of the pixel array for collecting and transferring charge. The center channel is electrically coupled to a lateral overflow drain. In various embodiments, the image sensor may comprise a light shield under a gap between neighboring microlenses, such as a gap along the center line, to block light, such as to maintain a uniform, spatial sampling pattern across the device. In various embodiments, the image sensor may comprise a barrier region disposed between the center channel and the lateral overflow drain, for example to prevent charge from the lateral overflow drain being injected back into the center channel and adjacent pixels.

Abstract: An LED lamp assembly includes LED circuit boards having LEDs as light sources, and concave parabolic lens surfaces as light condensing surface to replace convex lens surfaces having been conventionally used for LED light sources as well as to allow the LED circuit boards to be deposited at sites where is so well air ventilation that heat generated thereby is dissipated rapidly to ensure good heat dissipation for the LED circuit boards; and a reflective LED searchlight comprises the LED lamp assembly as an essential component and features a good heat dissipation for its LED circuit boards.

Abstract: The present disclosure provides a device and method for detecting a defect in a main shaft of a wind turbine. The device includes: an excitation source, configured to generate an electromagnetic ultrasonic guided wave signal; a nickel strap, magnetized and disposed on an outer surface of an end of the main shaft; a coil, disposed at the nickel strap, configured to receive the electromagnetic ultrasonic guided wave signal such that the electromagnetic ultrasonic guided wave signal propagates in the main shaft, the coil and the nickel strap being configured to transform the electromagnetic ultrasonic guided wave signal propagating in the main shaft into an electrical signal by electromagnetic induction; a signal collector, configured to collect the electrical signal and transform the electrical signal into guided wave detection data and a wireless communication component, configured to transmit the guided wave detection data to a remote equipment.

Abstract: An image capture device includes an image sensor, a reading component, a timing generator, and a voltage regulator. The image sensor includes a temperature sensor configured to measure temperature measurements of the image sensor. The reading component is configured to read the temperature measurements from the temperature sensor. The timing generator is configured to apply an electronic shutter pulse to the image sensor. The voltage regulator is coupled between the temperature sensor and the reading component for regulating increased voltage at the reading component resulting from the electronic shutter pulse.

Abstract: One or more embodiments of the disclosure include systems and methods that generate and utilize digital visual codes in electronic payment transactions. In particular, in one or more embodiments, the disclosed systems and methods generate digital visual codes that embed information regarding a user account of a payor (i.e., a user account of the payor within a social networking system). In one or more embodiments, the disclosed systems and methods display the digital visual codes via a payor computing device, scan the digital visual codes via a payee computing device, and send an identifier of the payor to the social networking system based on scanning the digital visual codes. The social networking system then utilizes the identifier to identify the payor, send and receive confirmation from the payor, and finalize the payment transaction between the payor and the payee.

Abstract: Technologies are described herein for providing a two-tier failover service. A request to access content by an application associated with an application identifier may be identified. A first record corresponding to the application identifier may be retrieved from a database information table. The first record may include a reference identifier, a database name of a database, and a failover value. A second record corresponding to the reference identifier may be retrieved from a server information table. The second record may include an indication of a first server computer as a primary server computer and an indication of a second server computer as a secondary server computer. A connection specification to either the first server computer or the second server computer may be generated based on the first record and the second record.

Abstract: According to embodiments, a drive circuit includes a control portion configured to, when a duty ratio is set to a first predetermined value, and a load apparatus is in an overload state, set the duty ratio to a second predetermined value smaller than the first predetermined value during a predetermined time period.

Abstract: An inclined reactor of bottom gas-inlet type for aerobic fermentation and a method for aerobic fermentation are provided, a fermenter is provided with a circular inner tank, end covers and a jacket; an airtight fermentation space is formed in the fermenter by the inner tank, an upper end cover and a lower end cover; a feed opening and an exhaust outlet are arranged at an upper part of the fermenter, and a discharge opening is arranged at a lower part of the lower end cover of the fermenter; a length of the fermenter is greater than or equal to a diameter of the fermenter, the fermenter is fixed on a base having a height difference and is hence in an inclined state; an energy-saving stirrer is mounted in the fermenter, and the energy-saving stirrer is formed by connecting several groups of tangential plates or a spiral combination of tangential plates, a radial rod, a stirring rod and a stirring shaft; several groups of air chambers are arranged at an external wall at the bottom of the inner tank of the fermen