Abstract: A circuit includes an operational amplifier and a resistor network coupled to an output of the operational amplifier. The resistor network includes a first set of resistors coupled between the output of the operational amplifier and a first node of the resistor network, wherein the resistors of the first set are electrically connected in series with each other, a second set of resistors coupled between the first node and a second node of the resistor network, wherein the resistors of the second set are electrically connected in series with each other and include a first number of resistors, a third set of resistors coupled between the second node and a third node of the resistor network, wherein the third node is coupled to a first voltage, and wherein the resistors of the third set are electrically connected in parallel with each other and include a second number of resistors, and a resistor coupled between the first node and the second node and arranged in parallel with the second set of resistors.

Abstract: Disclosed are a steel with controlled steel ratio and a manufacturing method therefor. The steel comprises the following components in percentage by mass: C: 0.245-0.365%, Si: 0.10-0.80%, Mn: 0.20-2.00%, P:?0.015%, S:?0.003%, Cr: 0.20-2.50%, Mo: 0.10-0.90%, Nb: 0-0.08%, Ni: 2.30-4.20%, Cu: 0-0.30%, V: 0.01-0.13%, B: 0-0.0020%, Al: 0.01-0.06%, Ti: 0-0.05%, Ca:?0.004%, H:?0.0002%, N:?0.013%, O:?0.0020%, and the balance of Fe and inevitable impurities, wherein the components satisfy (8.57*C+1.12*Ni)?4.8% and 1.2%?(1.08*Mn+2.13*Cr)?5.6%. The steel has excellent low-temperature impact toughness and aging impact toughness at ?20° C. and ?40° C., a rationally controlled yield ratio, and ultra-high strength, ultra-high toughness, and ultra-high plasticity, which can be used in applications such as offshore platform mooring chains, mechanical structures, and automobiles that require high strength and toughness of the steel.

Abstract: In accordance with one implementation of the present disclosure, a new approach for determining a movement orientation of a user is proposed in indoor navigation. Generally speaking, a device orientation of a terminal device is obtained based on at least one signal stream collected from the terminal device carried by a moving user. A deviation degree is determined based on the at least one signal stream, here the deviation degree represents a deviation between a movement orientation of the user and an actual device orientation of the terminal device. The movement orientation is determined based on the device orientation in accordance with a determination that the deviation degree is below a threshold degree. With the above implementation, the movement orientation of the user is determined in a more effective an accurate way, and thus accuracy of the indoor navigation is increased.

Abstract: A reliable multi-information entropy PUF for Internet of Things security includes a control circuit, a data register, 128 glitch generation circuits, a 128-to-1 multiplexer, and a Schmidt glitch sampling module. The control circuit controls the data register to generate a square signal, the 128 glitch generation circuits to generate glitch signals to be output and the 128-to-1 multiplexer to select the glitch signals to be output. The Schmidt glitch sampling module samples the glitch signals to obtain PUF response outputs. Each glitch generation circuit generates a glitch signal by means of a fully symmetrical structure. The Schmidt glitch sampling module comprises a first PMOS transistor, a second PMOS transistor, a third PMOS transistor, a fourth PMOS transistor, a first NMOS transistor, a second NMOS transistor, a third NMOS transistor, a fourth NMOS transistor, a buffer module and a D flip-flop.

Abstract: An adaptive anti-aging sensor based on a cuckoo algorithm, comprising a control module, a reference voltage-controlled oscillator, two shaping circuits, a frequency difference circuit, a resolution adjustment circuit, a 16-bit counter, a parallel-to-serial circuit, an adaptive module, and a digital-to-analog converter. A lookup table is prestored in the adaptive module; when aging monitoring is performed on a voltage-controlled oscillator in an integrated circuit, the adaptive module uses the cuckoo algorithm to determines the optimal working voltage of the currently monitored voltage-controlled oscillator, and the control module accordingly changes the input voltage of the voltage-controlled oscillator of the integrated circuit.

Abstract: A cooking apparatus includes a base, a cover with a hot air system, an inner pot, an upper temperature sensor located in the lid, and a lower temperature sensor located in the base. A processor is configured to operate in one of multiple cooking modes, and for each of the cooking modes the processor is configured to measure an upper and a lower temperature using the upper and the lower temperature sensor, respectively; compare the upper and the lower temperature to an upper and a lower temperature sensor setting, respectively; when the upper temperature differs from the upper temperature sensor setting, adjust power to the hot air heating element such that the upper temperature approaches the upper temperature sensor setting; and when the lower temperature differs from the lower temperature sensor setting, adjust power to the heating plate such that the lower temperature approaches the lower temperature sensor setting.

Abstract: In accordance with one implementation of the present disclosure, a new approach for identifying a stepping event is proposed in indoor navigation. Generally speaking, a first signal fragment and a second signal fragment respectively within a first time window and a second time window in an acceleration signal stream are obtained, here the acceleration signal stream is collected from an acceleration sensor associated with a moving user, the first time window being shorter than the second time window. A first amplitude feature and a second amplitude feature are determined for the first and second time windows based on the first and second signal fragments, respectively. A stepping event of the user is identified based on a deviation between the first and second amplitude features. With the above implementation, the stepping event is identified in a more effective an accurate way, and thus accuracy of the indoor navigation is increased.

Abstract: A dispersion, methods of making the same, applications of the dispersion to graphitic material and the resulting coated particles are disclosed. The dispersion includes ?55% wt. coal tar pitch (softening point 100° C.-95° C.), ?60% wt. dispersant, and the balance a non-aromatic solvent such as water or alcohol. Pitch particles in the dispersion are preferably ?10 ?m with a distribution of D50<15 ?m. The pitch particles are micronized, such as by dry and/or wet milling with the dispersant and aqueous solvent to achieve the desired pitch particle size and distribution. This aqueous dispersion may be mixed with natural or synthetic graphitic material having a diameter of 5-20 ?m in a ratio of 5%-30% pitch to graphite, dried and carbonized to form coated particles having a graphitic core at least partially coated by pitch particles.

Abstract: One example method includes obtaining first configuration information, where the first configuration information includes an initial reference time or a scale parameter, determining a current time according to a global navigation satellite system (GNSS) clock, and calculating a transmission timeslot in a device-to-device (D2D) communications system according to the current time and the first configuration information.

Abstract: A mechanical seal for sealing against a rotating shaft includes a static ring positioned about the shaft and a movable ring positioned about the shaft and in sliding contact with the static ring. The movable ring is rotatable with the shaft and a tray sleeve is attached to one of the movable ring and the static ring, with the tray sleeve being selectively movable in an axial direction along the shaft. Wear between the static ring and the movable ring causes the tray sleeve to move in the axial direction. The tray sleeve includes an indicator and relative movement of the indicator along the shaft is in proportion to the wear between the static ring and the movable ring.

Abstract: A digital-to-analog converter for generating an analog output voltage in response to a digital value comprising a plurality of bits, the converter including: (i) a first switched resistor network having a first configuration and for converting a first input differential signal into a first analog output in response to a first set of bits in the plurality of bits; and (ii) a second switched resistor network, coupled to the first switched resistor network, having a second configuration, differing from the first configuration, and for converting a second input differential signal into a second analog output in response to a second set of bits in the plurality of bits.

Abstract: A display panel and a display device are provided. In the display panel, at least one odd-numbered thin film transistor is sequentially turned on to charge sub-pixels of a corresponding odd-numbered row before charging sub-pixels of any one of odd-numbered rows is finished, and at least one even-numbered thin film transistor is sequentially turned on to charge sub-pixels of a corresponding even-numbered row before charging sub-pixels of any one of even-numbered rows is finished, thereby saving the number of uses of data traces and thin film transistors, as well as enhancing the timeliness of data signal transmission.

Abstract: A multimerization delivery system that can be used to deliver a cargo molecule intracellularly. The multimerization delivery system can achieve high-efficiency endocytosis of a cargo molecule and high-efficiency release thereof from an endocytic vesicle, significantly improving the cytoplasmic delivery efficiency of the cargo molecule. Once the cargo molecule is available in the cytoplasm, the cargo molecule can play any role related thereto. The multimerization delivery system provides an effective means for affecting the biological mechanisms and pathways of cells, and can be used in various fields such as research, treatment, and diagnosis.

Abstract: The bicycle stem structure includes a mounting seat, a housing, and a vertical pipe. The housing includes a first connecting member extending toward a front wheel and a second connecting member extending toward a rear wheel. The vertical pipe is located in the first through hole. The vertical pipe is spaced apart from an inner wall of the first through hole and forms an annular cavity in communication with the second through hole. The vertical pipe is provided with a third through hole along an axial direction thereof. The mounting seat is connected to the vertical pipe and provided with at least two cable through holes through which cables are passed. At least one cable through hole is in communication with the third through hole, and at least one cable through hole is in communication with the annular cavity.

Abstract: The present application discloses a cartridge type mechanical sealing device for sealing liquid, the sealing device including a gland, a rotating ring adaptor assembly, a rotating ring, a stationary ring adaptor, a stationary ring, and a locking ring mounted around a rotating shaft.

Abstract: An image processing method includes: acquiring a standard image matched with an image processing model; determining light field variation parameters of a use environment of the image processing model based on the standard image; determining an image training sample set based on the light field variation parameters, the image training sample set including images of different light field backgrounds; training a correction network of the image processing model through the image training sample set to obtain a model updating parameter adapted to the correction network, and generating a trained image processing model based on the model updating parameter; acquiring a single image in the use environment, and performing prediction processing on the single image through the trained image processing model to obtain light field information corresponding to the single image; and correcting a light field of the single image based on the light field information.

Abstract: The present invention discloses a preparation process of food-grade potassium dihydrogen phosphate, wherein phosphoric acid prepared from wet-process phosphoric acid is used for the preparation of high-purity potassium dihydrogen phosphate. The preparation process of food-grade potassium dihydrogen phosphate provided in the present invention effectively reduces the preparation cost of the high-purity potassium dihydrogen phosphate and has the advantage of high process controllability, and by such a process, high-purity potassium dihydrogen phosphate crystals that meet the food-grade requirements can be produced, which crystals have uniform particle size distribution and comprises few fine powder, having a very high market value.

Abstract: The invention relates to a method for producing flexible polyurethane foam, flexible polyurethane foam produced by the method, and its use in household articles and automobile articles.

Abstract: This invention provides compounds, compositions and methods for modulating the expression of human GST-? using RNA interference. The RNA interference molecules can be used in methods for preventing or treating diseases such as malignant tumor. Provided are a range of siRNA structures, having one or more of nucleotides being modified or chemically-modified. Advantageous structures include siRNAs with 2?-deoxy nucleotides located in the seed region, as well as other nucleotide modifications.