Abstract: A high-speed successive approximation analog-to-digital converter of two bits per cycle, includes three switches, two capacitor arrays, three comparators, an encoding circuit, a first switch array corresponding to the first capacitor array, a second switch array corresponding to the second capacitor array, a shifting register and a digital correction unit. The analog-to-digital converter, featuring doubled speed, realizes a successive approximation process without any fault when a high-bit large capacitor is unsettled. Thus no redundancy bit capacitor is required to compensate for unsettled pre-stage large capacitor. By using the encoding circuit, a thermometer code is converted into a binary code effectively, and inherent errors of comparators are reduced by the randomization of three comparators.

Abstract: Stabilized trimers of a clade A strain and a clade C strain of HIV-1 are provided. Broadly neutralizing antisera against HIV-1, methods of making broadly neutralizing antisera against HIV-1, broadly neutralizing vaccines against HIV-1, as well as methods of treating subjects infected with HIV, preventing HIV infection, and inhibiting HIV-mediated activities are also provided.

Abstract: The present invention pertains to a high-speed successive approximation analog-to-digital converter of two bits per circle, includes three switches, two capacitor arrays, three comparators, an encoding circuit, a first switch array corresponding to the first capacitor array, a second switch array corresponding to the second capacitor array, a shifting register and a digital correction unit. The analog-to-digital converter, featuring doubled speed, realizes a successive approximation process without any fault when a high-bit large capacitor is unsettled. Thus no redundancy bit capacitor is required to compensate for unsettled pre-stage large capacitor. By using the encoding circuit, a thermometer code is converted into a binary code effectively, and inherent errors of comparators are reduced by the randomization of three comparators.

Abstract: A biological test strip with isolation structure includes a substrate having a testing portion and a measuring portion; an electrode disposed on the substrate and including an operation electrode and an auxiliary electrode, the operation electrode having a first operating end and a first reading end, the auxiliary electrode having a second operating end and a second reading end; a first flow confining member surrounding the first operating end; and a second flow confining member surrounding the first flow confining member and the second operating end, with a height of the second flow confining member larger than a height of the first flow confining member. Therefore, the flowing scope of the dropped liquid is confined, so as to fix the square measure of the dropped liquid contacting the electrode and thereby improve the analysis repeatability.

Abstract: Stabilized trimers of a clade A strain and a clade C strain of HIV-1 are provided. Broadly neutralizing antisera against HIV-1, methods of making broadly neutralizing antisera against HIV-1, broadly neutralizing vaccines against HIV-1, as well as methods of treating subjects infected with HIV, preventing HIV infection, and inhibiting HIV-mediated activities are also provided.

Abstract: A method for evaluating streaming media transmission quality is provided. Initial playback delay information is obtained, and a subjective experience variation value of a user terminal is calculated according to the initial playback delay information, so as to evaluate streaming media transmission quality. The method includes: monitoring a Transmission Control Protocol (TCP) connection established with a user terminal; obtaining initial playback delay information if it is detected that the TCP connection established with the user terminal is a streaming media service connection; and calculating a subjective experience variation value of the user terminal according to the initial playback delay information. A device for evaluating streaming media transmission quality, a method for obtaining streaming media information, and a related device and system are also provided.

Abstract: A method and an apparatus are provided for evaluating media delivery quality that relate to the field of communications technologies and that can directly reflect a variation of media delivery quality and a variation of subjective experience of a user on media play quality. A method for evaluating media delivery quality includes: receiving media data, and measuring a data amount of the media data received within the period of time; parsing the media data, and acquiring a play rate of the media data; simulating, a decoding buffer in a process of playing the media data received within the period of time, to acquire a virtual decoding buffer and acquire a size of the virtual decoding buffer; and determining, according to the size of the virtual decoding buffer, whether a pause occurs in the process of playing the media data received within the period of time.

Abstract: An ejecting mechanism provides an ejecting executing portion driven by an ejecting driving portion for pushing a secondary machine out of a primary machine and for separating a secondary connector and a primary connector connected to each other. It allows the secondary machine to be ejected out of the primary machine automatically and prevents damage of the secondary connector and the primary connector caused by applying an external pulling force on the secondary machine directly. Furthermore, when a first external force overcomes a resilient driving force to push the secondary machine into a slot, the ejecting executing portion contacting with the secondary machine swings toward a rear end of a connecting surface of the primary connector. Additionally, an ejecting locking portion moving with the swing of the ejecting executing portion can be locked by a locking executing portion, such that the automatic ejection of the secondary machine is restrained.

Abstract: A skeletal-hole plug comprising a hardened bone cement, which has a circular or polygonal column, and the column is a porous hardened bone cement with a porosity of 30% to 90% by volume, which can be used to rapidly fill the skeletal holes resulted from the removal of bone screws, or from the removal of teeth, and to induce rapid growth of osteocytes in the skeletal holes.

Abstract: The present disclosure discloses a full adder based on resistive-switching devices and an operation method thereof. A multi-bit full adder circuit is constituted by using a cross-bar array of resistive-switching devices, wherein data of standard sums is stored on the principle diagonal of the cross-bar array in a nonvolatile manner, and carry data is stored in adjacent units on both sides of the principle diagonal. The carry data is stored according to whether the storage loop (crosstalk loop) is turned on. With the present disclosure, the multi-bit full adder circuit is significantly simplified. Thereby, additional circuits for generating a carry signal are reduced, the circuit delay and chip area are decreased, and the adder has an ability of nonvolatile storage.

Abstract: Stabilized trimers of a clade A strain and a clade C strain of HIV-1 are provided. Broadly neutralizing antisera against HIV-1, methods of making broadly neutralizing antisera against HIV-1, broadly neutralizing vaccines against HIV-1, as well as methods of treating subjects infected with HIV, preventing HIV infection, and inhibiting HIV-mediated activities are also provided.

Abstract: A track and hold circuit comprises an input buffer amplifier, a unit gain amplifier module, a sampling switch, a drive triode and a sampling capacitor. The input buffer amplifier receives an input signal. In a track phase, the sampling switch is electrically connected to an emitter electrode of the drive triode; the input signal charges the sampling capacitor after being buffered by the input buffer amplifier, amplified without distortion by the unit gain amplifier module and driven by the drive triode. In a hold phase, the sampling switch is electrically connected to a base electrode of the drive triode; the base voltage of the drive triode is pulled down until the drive triode is cut off; electrical charges on the sampling capacitor are thereby held, causing the signal to be held on the sampling capacitor.

Abstract: A dither circuit for high-resolution analog-to-digital converters (ADCs) is presented, including a settable pseudorandom sequence generator, a trimming module, a trimmable digital-to-analog conversion circuit, a dither introduced circuit and a dither elimination circuit, wherein the settable pseudorandom sequence generator works to generate pseudorandom sequence signal uncorrelated to analog input signal and its output can be set, of which n bit output is taken as digital dither signal and n can be less than the quantization bit of the ADC; the trimming module works to determine the trimming signals for the trimmable digital-to-analog conversion circuit to convert the digital dither signal into analog dither signal precisely; the dither introduced circuit works to introduce the analog dither signal to the ADC; the dither elimination circuit works to remove the digital dither signal from the output of ADC. The dither circuit features less complexity and better dynamic performance for high-resolution ADC.

Abstract: Methods for reprogramming cells by culturing the cells under a condition that allows formation of a three-dimensional cell aggregate are provided. The cells and cell aggregates obtained using the methods are also provided.

Abstract: A switch assembly includes a switch unit including a button and an arm extending from the button along a height direction, the arm including first and second contact portions spaced apart from each other along a longitudinal direction; and a slider unit extending along a width direction and including a nose to contact the first and second contact portions respectively at first and second engagement positions. The switch assembly provides a reduced need for space and enhanced friendliness in touch and feel.

Abstract: A band-gap reference circuit includes a proportioned current generating circuit, a startup circuit, a current mirror circuit, a high-order temperature compensation generating circuit and a reference generating circuit. The proportioned current generating circuit is configured to generate a current in direct proportion to the absolute temperature. The startup circuit is configured to start up the proportioned current generating circuit when the startup circuit is power on. The current mirror circuit is configured to reproduce a current which is the same as the current in direct proportion to the absolute temperature. The high-order temperature compensation generating circuit is configured to generate a compensation current of high-order temperature coefficient.

Abstract: The present invention discloses a method for measuring user quality of experience QoE, where the method includes the following steps: receiving event information sent by a receiving end, where the event information includes condition information for determining a cause for shortage of valid media data in a buffer of the receiving end; determining, according to the condition information, whether the shortage of the valid media data in the buffer of the receiving end is caused by a service system or caused by a user's action; and measuring QoE decrease degrees according to different causes for the shortage of the valid media data in the buffer, respectively.

Abstract: A medium for a dental structure and a method of producing a medium for a dental structure includes: a polymeric composite arranged to contact with at least one dental component of a dental structure, wherein the polymeric composite further comprises a plurality of inorganic fillers dispersed therein; and wherein the polymeric composite is at least partially translucent after being cured.

Abstract: A dither circuit for high-resolution analog-to-digital converters(ADCs) is presented, including a settable pseudorandom sequence generator, a trimming module, a trimmable digital-to-analog conversion circuit, a dither introduced circuit and a dither elimination circuit, wherein the settable pseudorandom sequence generator works to generate pseudorandom sequence signal uncorrelated to analog input signal and its output can be set, of which n bit output is taken as digital dither signal and n can be less than the quantization bit of the ADC; the trimming module works to determine the trimming signals for the trimmable digital-to-analog conversion circuit to convert the digital dither signal into analog dither signal precisely; the dither introduced circuit works to introduce the analog dither signal to the ADC; the dither elimination circuit works to remove the digital dither signal from the output of ADC. The dither circuit features less complexity and better dynamic performance for high-resolution ADC.

Abstract: A Hypertext Transfer Protocol (HTTP)-based buffer status updating method, device and a buffer status processor are provided, where the method includes, receiving an HTTP request from a terminal, triggering a buffer event according to the HTTP request, where the buffer event includes seek, pause, resume, and stream switch, and the method further includes updating a buffer status according to the buffer event, where the buffer status includes a normal play state, a play paused state, a re-buffering state, and a stream switch state. Hence, the buffer status is updated based on the buffer event in a manner of analyzing only an HTTP Protocol field such that a buffer model is closer to a real client buffer situation.