200results about How to "Increase aggressiveness" patented technology

The invention discloses an authentication method and device based on a blockchain. The method comprises the following steps: generating a roll-out private key for transferring digital assets through the blockchain and a corresponding roll-out public key according to a random number; carrying out coding treatment on the roll-out public key, and generating a roll-in address; carrying out digital signature on the basis of the roll-out private key, a transferring numerical value of the digital assets to be transferred and the roll-in address; acquiring digital asset transferring data on the basis of the transferring numerical value, the roll-in address, the digital signature and the roll-out public key; and broadcasting the digital asset transferring data into the blockchain so that the digital asset transferring data are subjected to first-grade authentication by an authentication side, or are subjected to multi-grade authentication by a server side and the authentication side jointly after first-grade authentication is finished. Therefore, by the embodiment, hacker attack ability can be improved, and safety requirements of data and transaction in a blockchain open environment can be met.

Urinary Cyr61 protein levels are up regulated in patients that have cancers of epithelial origin, i.e. breast cancer and ovarian cancer. Accordingly, the present invention is directed to methods for prognostic evaluation, and diagnosis of cancers of epithelial origin. Further, the amount of Cyr61 protein detected in a urine sample correlates with disease status such that Cyr61 levels can be used to predict the presence of, as well as the metastatic potential of cancer. Thus, measuring the level of Cyr61 in urine provides a quick, easy, and safe screen that can be used to both diagnose and prognose cancer in a patient.

A method and apparatus for treating sleep disordered breathing. An arousal index is determined for use in an outer loop of a control algorithm, the arousal index being a measure of the frequency of sleep arousals. The respiratory airflow signal in an inner loop of the control algorithm is monitored to detect an airway obstruction. If the arousal index is high, then the sensitivity of obstruction detection and/or the aggressiveness of the treatment is increased, and if the arousal index is low, then the sensitivity of the obstruction detection and/or the aggressiveness of the treatment is decreased

The invention discloses a long window scaling factor-based playback voice attack detection algorithm which is developed for solving a problem that rights and interests of a legitimate are damaged when conventional attackers use playback voice to enter a speaker identification system. The detection algorithm can be used for effectively identifying playback voice from different sources and is high in detection accuracy; after a module of the detection algorithm is loaded to a GMM-UBM system, playback voice attack resistant capability is improved, error probability of the identification system and the like is lowered by 32%, and a safety problem of the identification system is greatly alleviated.

The invention provides a black box antagonistic attack defense method based on sample selection and model evolution. The method includes the following steps: 1) using a sample selector to randomly select partial samples from the multiple types of samples to be input into various attack models to generate a large number of counter samples; 2) calculating the attack effect of the counter samples, and analyzing the attack effect of different input samples and the attack model; (3) updating the number of different samples selected by different samples in the attack model and the sample selector according to the attack effect to make the newly generated counter sample have a better attack effect, meanwhile, updating the counter sample pool, storing the several counter samples with the best attack effect, and outputting the counter samples with the best attack effect in the pool to serve as the final result of the current evolution; and 4) training a large number of training output results and normal samples, so that the attack can be defended. According to the invention, the defense capability of the black box model can be improved.

The invention discloses an image two-grade encrypting method based on a double-chaos system, relating to the field of image encrypting systems. The adopted method comprises the steps of creating an auxiliary key by a plaintext image firstly; creating a two-dimension chaos scrambling matrix by the auxiliary key combined with the double-chaos system of the Chebyshev mapping and Logistic mapping to dually scramble the position and grey level of the pixels of plaintext image so as to realize the encryption of images. According to the image two-grade encrypting method, the auxiliary key based on the plaintext image is introduced to expand key space and correlate the key with the plaintext, so that the ability of the image encryption system for resisting attack of the known plaintext is enhanced; and meanwhile, the complicated characteristics of dynamics of the double-chaos system is utilized to dually scramble the position and grey level of the plaintext image, with good encryption effect and high security.

The invention discloses a digital image encryption method with a rapid key stream generative mechanism, and belongs to the field of image encryption. According to a digital image encryption system with the rapid key stream generative mechanism, a plurality of key stream elements are generated every time chaotic system iteration and key stream element quantification are conducted in a diffusion stage, the number of chaotic system iteration is effectively reduced, so that speed of the encryption system is increased significantly. In addition, the number of the key stream elements which are generated in each time of iteration and quantification is relevant to plaintexts, and capacity of the encryption system for resisting attack from known plaintexts and chosen plaintexts is improved. Cryptology analyses and encryption speed tests indicates that the encryption speed of the digital image encryption system with the rapid key stream generative mechanism is one time higher than the encryption speed in a tradition method on the premise that the encryption system is high in safety.

A toy top includes a body and a shaft part. A rotating shaft of the shaft part includes plastic or metal shaft tip segments disposed at predetermined intervals in a circumferential direction of the rotating shaft. The shaft tip segment constitutes part of an outer periphery of the rotating shaft. The part of the outer periphery is configured to come into contact with the ground. Rubber is provided at the outer periphery of the rotating shaft so as to protrude outward beyond outer surfaces of the shaft tip segments. The rubber has higher frictional force than the shaft tip segments. The rubber is disposed between adjacent shaft tip segments in the circumferential direction.

The invention discloses a method for manufacturing a lithium cell electrode tab, which comprises the following steps: a, cutting a metal strip of an electrode tab substrate into sections; b, performing ultrasonic cleaning; c, drying; d, performing surface treatment on the metal strip in a treating fluid; e, rinsing the metal strip by using deionized water; f, drying; g, fixing a sealant with the metal strip by PET and a double faced adhesive tape to ensure that the dimension reaches requirements; h, hot pressing, i, cooling at room temperature; and j, cutting a side-layer material into a single electrode tab. Due to the addition of the pretreatment and the surface treatment of the electrode tab base material metal strip or the surface treatment of the electrode tab base material metal strip, oxides on the surface of the metal strip can be removed effectively, and the surface activity of the metal strip is enhanced, so that the binding strength between the metal surface and the sealant is improved, the capability for resisting electrolyte attack is strengthened, the sealing property of battery cells is improved, and the service life of the lithium cell is prolonged from 3 to 6 months to 3 years.

The invention is a process for applying a nickel-free, copper-containing phosphate coating to a metal surface by contacting the metal surface with a phosphate solution containing 0.2 to 2.0 g/l zinc ions, 0.5 to 25 mg/l copper ions, and 5-30 g/l phosphate ions.

The invention discloses an image encryption method based on L-F cascade chaos and 3D bit scrambling. Image encryption is mainly divided into two steps: (1) 3D bit scrambling encryption and (2) diffusion operation. A novel L-F cascade chaos is constructed, the problem that a blank window exists due to uneven distribution of Logistic is solved while the rapidity of the Logistic is guaranteed, the chaos interval and number of parameters are increased, the secret key space is increased, and the exhaustion attack resistance of the system is improved. According to the method, the randomness of scrambled ciphertext is improved by adopting a 3D cyclic shift bit scrambling mode, and the problem that a bit scrambling sequence is insensitive is solved. According to the method, high-order informationcontaining a large amount of plaintext information and low-order information containing a small amount of plaintext information are separately scrambled, so that the noise attack resistance of the system is improved. According to the encryption system, the plaintext SHA-256 is used for carrying out strong association on the chaotic key, so that the plaintext sensitivity and the capability of resisting the attack of the selected plaintext are effectively improved.

The invention discloses a PDC drill tool with an alternating cutting trajectory, and belongs to the field of rock breaking tools for drilling equipment. The PDC drill tool with the alternating cutting trajectory comprises an eccentric shaft, an outer shell, a PDC drill and a cycloid shaft. The PDC drill is fixedly connected to the cycloid shaft, the cycloid shaft is matched inside the outer shell and can eccentrically rotate relative to the alternating trajectory, and an eccentric shaft section arranged on the eccentric shaft is matched in an inner cavity of the cycloid shaft to form a revolute pair. An inner flow channel of the eccentric shaft, an inner flow channel of the cycloid shaft and an inner flow channel of the PDC drill are communicated. By the adoption of the PDC drill tool, the alternating cutting trajectory movement can be made, the stratum eating-in capacity of the PDC drill can be improved remarkably, rock breaking efficiency is improved, the abrasion speed of cutting teeth can be better lowered, and in particular, the PDC drill tool has obvious technical advantages in a deep stratum which cannot be drilled easily and in a high hardness and high abrasiveness stratum.

The invention discloses an invisible aircraft carrier with high combat power and survivability. The invisible aircraft carrier is characterized in that: firstly, width of a flight deck is greatly reduced, the flight deck and the aircraft carrier body below the deck are changed to be more regularly strip-shaped, the surrounding outer surface of the aircraft carrier body is made into a structure that large areas of outward bent and inward bent planes are crossed, and an invisible material is additionally adhered to the outer surface of the aircraft carrier body or an invisible coating is additionally coated on the outer surface of the aircraft carrier body; secondly, an aircraft hangar with width of 40m and length of 200-300m is made on the lower part of the flight deck; or a vertical two-layer aircraft hangar is made below the aircraft carrier surface of a middle rear part so as to greatly increase the number of aircrafts carried by the aircraft hangar; thirdly, 4-5 flight flying and receiving hatchways are formed on the tail part of the flight deck and on two side edges or in the center of the aircraft carrier surface of the middle front part, and the aircraft carrier surfaces on the front parts of the four aircraft flying and receiving hatchways on the side edge of the flight deck are provided with catapults, or the forefront part of the aircraft carrier body is provided with a flying deck; and fourthly, the upper part of the flight deck on the aircraft carrier surface for landing and receiving aircrafts is provided with four or more arrester wires, and the aircraft carrier surface on the ahead part is provided with a barrier net. Thus, the aircraft carrier with high combat power and high invisibility can be made.

The present invention relates to compositions and methods for immunotherapy of a subject afflicted with diseases such as cancer, an infectious disease, or a neurodegenerative disease, which methods comprise administering to the subject a composition comprising a therapeutically effective amount of an anti-PD-L1 antibody or portion thereof that potentiates an endogenous immune response, either stimulating the activation of the endogenous response or inhibiting the suppression of the endogenous response.

A method and apparatus for imaging targets with an imaging reader. The method includes: operatively connecting an application specific integrated circuit (ASIC) to the solid-state imager to receive the image data from the solid-state imager and generating a stream of combined data frames by the ASIC. A combined data frame in the stream generated by the ASIC including an image frame from the image data and a header. The method also includes receiving and processing the stream of combined data frames from the ASIC at a controller operatively connected to the ASIC.

A polypeptide M204C4 for suppressing the activity of gelatinase A (MMP-2) is composed of the amino acid sequence shown by HNWTRWLLHPDRGGGS is disclosed. It can also suppress the invasion and transfer of external pancreas cancer cells PANC01 and CFPAC-1. Its preparing process includes such steps as affinity screening and reproduction of bacteriophage several times to obtain the bacteriophage with specific binding to MMP-2, coating, cloning and monoclonal screening with fluorescent screening reagent kit.

The invention provides an imperceptible watermark attack method based on residual learning, a storage medium and an electronic device. The method comprises the steps: constructing a watermark attack model based on a convolutional neural network, carrying out the end-to-end nonlinear learning between a watermark-containing image and a watermark-free image, mapping the watermark-containing image to the watermark-free image, and carrying out watermark attack; selecting a proper number of feature extraction blocks according to the embedded area of the watermark information to extract a feature map containing the watermark information; introducing a residual learning mechanism to improve the convergence speed and learning ability of a watermark attack model, and improving the imperceptibility of an attacked image by reducing the difference between a residual image and the watermarking-free image; and constructing a data set for training a watermark attack model according to a DIV2K2017 super-resolution data set and a robust color image watermark algorithm based on a quaternion exponential moment. The watermark attack model provided by the invention can attack a robust watermark algorithm at a high bit error rate on the premise of not destroying the visual quality of a watermark-containing image.

The invention provides a toy gyro good in defensiveness. The toy gyro comprises a spiral cover, a spiral sheet, a spiral base and a hillock point, and is characterized by further comprising an elastic shock absorption piece for buffering impact force when the gyro is impacted. The shock absorption piece is provided with an elastic part used for resisting impact and a connection part fixedly connected with the spiral base. The elastic part is located on the periphery of the spiral base through fixed connection of the connection part and the spiral base, and therefore when the gyro competes with other gyros and the other party impacts on the elastic part, impact force will be reduced due to elastic deformation of the elastic part; thus, the shock absorption effect is achieved to make the gyro rotate stably, anti-impact force is produced and returned to the other party at the same time to interfere the other party, and accordingly the win rate of the gyro is improved. The toy gyro is strong in interestingness, the elastic property of the elastic shock absorption piece can be changed by a player according to judgments so as to achieve a better anti-impact effect, the method to play the toy gyro is novel, the toy gyro can attract more players, and manipulative ability and competitive ability of children can be trained at the same time.

The invention discloses an air-breathing premixed carbon dioxide pneumatic laser driven by continuous rotary detonation combustion. The laser comprises an air-breathing continuous rotary detonation combustion device, a transition section, a CO2 pneumatic laser generation device and an exhaust section. The air-breathing continuous rotary detonation combustion device is used for generating a high-temperature and high-pressure fuel gas heat source serving as total energy for downstream output laser, and comprises a center body and a cylindrical shell. The center body comprises an air inlet cone part, a large cylinder part, a small cylinder part and a tail cone part which are sequentially arranged from front to back. An air inlet channel is formed by a gap between the air inlet conical part and the front-end conical shell, and a rotary detonation combustion chamber is formed by a gap between the small cylindrical part and a rear-end cylindrical shell. The laser is applied to an air-breathing aircraft, and the air-breathing continuous rotary detonation combustion device is adopted as a pumping source; the generated laser is high in efficiency, and energy is saved. The same air-breathingcontinuous rotary detonation combustion device is adopted without increasing the load, so not only can thrust be generated, but also laser can be generated.

The invention discloses mouth-open feed for rearing calves, belongs to the field of livestock feed, and particularly relates to feed for rearing calves in weaning period. The mouth-open feed is prepared by mixing fermented milk, silage and wheat bran, and comprises the following components in percentage by weight: 20 to 50 percent of fermented milk, 30 to 60 percent of silage and 15 to 25 percent of an additive, wherein the additive is one or a mixture of one or more of wheat bran, corn meal and soybean meal. According to the mouth-open feed for rearing the calves, probiotics are directly added into fresh milk for the calves for fermentation, and the fermented milk is added into the mouth-open feed, and milk flavor has high feeding attraction performance for the weaned calves, so that the palatability is high; the fermented milk is supplemented in a preparation process, so that the calves can be easily transitioned from total milk rearing to solid rearing; due to the addition of the probiotics into the mouth-open feed, the probiotic cultivation in the stomach intestines of the calves is enhanced, the digestive absorption function of the gastrointestinal tracts is improved, and trophic diarherra and bacterial diarherra of the calves can be effectively prevented.