139results about How to "Increase entropy" patented technology

A high-strength and ultra heat-resistant high entropy alloy (HEA) matrix composite material and a method of preparing the HEA matrix composite material are provided. The HEA matrix composite material may include at least four matrix elements among Co, Cr, Fe, Ni, Mn, Cu, Mo, V, Nb, Ta, Ti, Zr, W, Si, Hf and Al, and a body-centered cubic (BCC) forming alloy element.

Compounds (including polymers) for use in hybrid host materials which can be used in electroluminescent devices. The compounds comprise at least one electron-transporting moiety and at least one hole-transporting moiety which are joined by a flexible linker. Hybrid host materials comprising the compounds exhibit stability against phase separation, elevated glass transition temperature, morphological stability against crystallization, and isolation of the electron transporting moiety and hole transporting moiety π-systems.

A localized multimodal haptic system includes one or more electromechanical polymer (EMP) transducers, each including an EMP layer, such as an electrostrictive polymer active layer. In some applications the EMP transducer may perform an actuator function or a sensor function, or both. The EMP polymer layer has a first surface and a second surface on which one or more electrodes are provided. The EMP layer of the EMP actuator may be 5 microns thick or less. The EMP transducers may provide local haptic response to a local a stimulus. In one application, a touch sensor may be associated with each EMP transducer, such that the haptic event at the touch sensor may be responded to by activating only the associated EMP transducer. Furthermore, the EMP transducer may act as its own touch sensor. A variety of haptic responses may be made available. The EMP transducers may be used in various other applications, such as providing complex surface morphology, keyboard, braille display, and audio speakers.

A localized multimodal haptic system includes one or more electromechanical polymer (EMP) transducers, each including an EMP layer, such as an electrostrictive polymer active layer. In some applications the EMP transducer may perform an actuator function or a sensor function, or both. The EMP polymer layer has a first surface and a second surface on which one or more electrodes are provided. The EMP layer of the EMP actuator may be 5 microns thick or less. The EMP transducers may provide local haptic response to a local a stimulus. In one application, a touch sensor may be associated with each EMP transducer, such that the haptic event at the touch sensor may be responded to by activating only the associated EMP transducer. Furthermore, the EMP transducer may act as its own touch sensor. A variety of haptic responses may be made available. The EMP transducers may be used in various other applications, such as providing complex surface morphology and audio speakers.

Transparent content addressable data storage and compression for a file system including providing a data structure that associates file identifiers and retrieval keys for memory blocks for storing file contents; storing in the data structure one or more file identifiers; providing a chunk of data comprising a quantity of input data of a file; retrieving a memory block from computer memory; searching for a segment of the chunk that matches the memory block; and if a matching segment is found: discarding the matching segment; providing a retrieval key for the memory block as a retrieval key for the matching segment; identifying an unmatched portion of the chunk that does not match the memory block; storing the unmatched portion; and providing a retrieval key for the unmatched portion.

A localized multimodal haptic system includes one or more electromechanical polymer (EMP) transducers, each including an EMP layer, such as an electrostrictive polymer active layer. In some applications the EMP transducer may perform an actuator function or a sensor function, or both. The EMP polymer layer has a first surface and a second surface on which one or more electrodes are provided. The EMP layer of the EMP actuator may be 5 microns thick or less. The EMP transducers may provide local haptic response to a local a stimulus. In one application, a touch sensor may be associated with each EMP transducer, such that the haptic event at the touch sensor may be responded to by activating only the associated EMP transducer. Furthermore, the EMP transducer may act as its own touch sensor. A variety of haptic responses may be made available. The EMP transducers may be used in various other applications, such as providing complex surface morphology and audio speakers.

A localized multimodal haptic system includes one or more electromechanical polymer (EMP) transducers, each including an EMP layer, such as an electrostrictive polymer active layer. In some applications the EMP transducer may perform an actuator function or a sensor function, or both. The EMP polymer layer has a first surface and a second surface on which one or more electrodes are provided. The EMP layer of the EMP actuator may be 5 microns thick or less. The EMP transducers may provide local haptic response to a local a stimulus. In one application, a touch sensor may be associated with each EMP transducer, such that the haptic event at the touch sensor may be responded to by activating only the associated EMP transducer. Furthermore, the EMP transducer may act as its own touch sensor. A variety of haptic responses may be made available. The EMP transducers may be used in various other applications, such as providing complex surface morphology and audio speakers.

A method for preparing a high entropy alloy thin film coating includes preparing a melt alloy by arc melting raw materials including five or more elements, casting the melt alloy into a mold to form a target, placing the target inside a vacuum chamber of a magnetron sputtering system, and rotatably fixing a substrate inside the vacuum chamber, spaced apart from the target. A high entropy alloy thin film is deposited on the substrate by high vacuum radio frequency sputtering inside the vacuum chamber.

A localized multimodal haptic system includes one or more electromechanical polymer (EMP) transducers, each including an EMP layer, such as an electrostrictive polymer active layer. In some applications the EMP transducer may perform an actuator function or a sensor function, or both. The EMP polymer layer has a first surface and a second surface on which one or more electrodes are provided. The EMP layer of the EMP actuator may be 5 microns thick or less. The EMP transducers may provide local haptic response to a local a stimulus. In one application, a touch sensor may be associated with each EMP transducer, such that the haptic event at the touch sensor may be responded to by activating only the associated EMP transducer. Furthermore, the EMP transducer may act as its own touch sensor. A variety of haptic responses may be made available. The EMP transducers may be used in various other applications, such as providing complex surface morphology and audio speakers.

A system and method for obtaining multispectral images of fresh meat at predetermined wavelength bands at a first time, subjecting the images to analysis in an image analysis system comprising a computer programmed to perform such analysis, and outputting a forecast of meat tenderness at a later point in time. Predetermined key wavelength bands are precorrelated with a high degree of prediction of meat tenderness and / or other properties of meat and are used in the multispectral system and method. A system and method for determining the key wavelengths is also disclosed. The multispectral imaging system and method is suitable for use in an industrial setting, such as a meat processing plant. The system and method is useful in a method for determining quality and yield grades at or near the time of imaging in lieu of visual inspection with the unaided human eye, increasing efficiency and objectivity.

A server (120) uses a password (π) to construct a multiplicative group (ZN*) with a (hidden) smooth order subgroup (<x′>), where the group order (Pπ) depends on the password. The client (110) uses its knowledge of the password to generate a root extraction problem instance (z) in the group and to generate data (y) allowing the server to construct a discrete logarithm problem instance (y′) in the subgroup. The server uses its knowledge of the group order to solve the root extraction problem, and solves the discrete logarithm problem efficiently by leveraging the smoothness of the subgroup. A shared key (sk) can be computed as a function of the solutions to the discrete logarithm and root extraction problem instances. In some embodiments, in an oblivious transfer protocol, the server queries the client (at 230) for data whose position in a database (210) is defined by the password. The client provides (240) such data without knowing the data position associated with the server's query. The client obtains the data position independently from the password. The data positions and / or the respective data are used for authentication and shared secret key generation. Other embodiments are also provided.

The present invention relates to a ture random number generator based on oscillator. It is formed from the following components: slow clock generator, quick clock generator, sample hold circuit and postprocessor. Said invention also provides the concrete action of the above-mentioned every component, and working principle of said ture random number generator and its application.

This invention is generally concerned with methods, apparatus and computer program code for securely caching\data, in particular for caching data stored on smart card systems such as those used in ICAO-compliant EU electronic passports. A caching system for providing a secure data cache for data stored in an electronic document, the comprising: an input to receive data to be cached; a processor configured to use all or part of said received data to calculate a unique cryptographic key for said data; encrypt all or part of said data with said unique cryptographic key; and discard said unique cryptographic key after encryption and an output to send said encrypted data to a data cache, with decryption of encrypted data requiring said unique cryptographic key to be recalculated from said electronic document whereby said data cache is secure. Use of such a cache dramatically speeds up the inspection process, by bypassing the need to read data entirely, except for during the first inspection.

Novel data structures, methods and apparatus for finding a full match between a search pattern and a pattern stored in a leaf of the search tree. A key is input, a hash function is performed on the key, a direct table (DT) is accessed, and a tree is walked through pattern search control blocks (PSCBS) until reaching a leaf. The search mechanism uses a set of data structures that can be located in a few registers and regular memory, and then used to build a Patricia tree structure that can be manipulated by a relatively simple hardware macro. Both keys and corresponding information needed for retrieval are stored in the Patricia tree structure. The hash function provides an n->n mapping of the bits of the key to the bits of the hash key. The data structure that is used to store the hash key and the related information in the tree is called a leaf. Each leaf corresponds to a single key that matches exactly with the input key. The leaf contains the key as well as additional information. The length of the leaf is programmable, as is the length of the key. The leaf is stored in random access memory and is implemented as a single memory entry. If the key is located in the direct table then it is called a direct leaf.

A method and system are described for controlling access to online applications using memetic authenticators that are de-identified and passwordless. The method includes curating, issuing ownership, and registering memetic authenticators. The method involves assembling an authenticator package including a fingerprint hash value, matched pairs of user-selected memetic authenticator records, a timer, and encrypting the package using a cipher issued and uniquely-assigned by a service provider. Ciphers may be regenerated on each authentication event providing for episodic re-verification. Fingerprints assign ownership for memetic authenticators, with such associations stored on networked nodes of a distributed database. On authenticating, the client-supplied authenticator package is decrypted and compared to ownership records on an identity network for verification and granting or denying access. The method provides for multilateral verification by retrieving ownership claims from multiple nodes during authentication events. At no time does any party to the system possess everything required to authenticate.

A system, electronic device and method for improved neural network training are provided. The electronic device includes: a processor, a memory storing a Generative adversarial network (GAN) to learn from unlabeled data by engaging a generative model in an adversarial game with a discriminator; and one or more programs stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for training the Generative adversarial network using a regularizer to encourage the discriminator to properly use its capacity and hidden representations of the discriminator to have high entropy.

A high entropy alloy with a composition containing between 4 and 9 major alloying elements chosen from the list including Cr, Fe, V, Al, Si, Mn, Mo, Ti and Ni with: 3 major alloying elements which are Cr, Fe and V, each having an atomic concentration include between 20 and 40%, 1 or 2 major alloying elements chosen from Al and Si each having an atomic concentration higher than or equal to 5% with a total concentration of these 2 major alloying elements of less than or equal to 25%, 0, 1, 2, 3 or 4 major alloying elements chosen from Mn, Mo, Ti and Ni, each having an atomic concentration higher than or equal to 5% with a total atomic concentration of these 4 major alloying elements of less than or equal to 35%, the total atomic concentration of the 4 to 9 major alloying elements being higher than or equal to 80%, the remainder being made up of any impurities and / or one or more minor alloying elements, each in an atomic concentration of less than 5%.

The invention discloses a high-toughness medium entropy high temperature alloy and a preparing method thereof. The alloy comprises chemical components including, by weight percent, 28.5 to 32.5% of Cr, 31.5 to 33.4% of Co, 32 to 35% of Ni, 0.5 to 6% of Al, 0 to 6% of Ti, 0 to 3% of Ta, 0.02 to 0.12% of C, 0.002 to 0.015% of B, 0.005 to 0.12% of Zr, 0.005 to 0.15% of RE, and larger than or equal to2% and smaller than or equal to 6% of Al+Ti+Ta, wherein Re is one of Ce, La and Y. The preparing method of the alloy comprises the steps that the raw materials are burdened and smelted according to the proportion, an electrode bar is forged and subjected to remelting, forging is carried out, an alloy bar is prepared, and the alloy bar is subjected to solid solution and aging heat treatment. The alloy is provided with a reasonable component ratio, a wide heat machining window and a heat processing system, the prepared alloy bar has the higher temperature strength, good heat machining and oxidation resistance properties, and the alloy is a candidate material of aero-engine and industrial gas turbine heat end parts.

A random number source includes a ring oscillator generating an internal clock signal having random phase noise, and a first linear feedback shift register connected to the ring oscillator. A counter is connected to a first tap of the first linear feedback shift register for generating a count signal. A feedback bit controller is connected to a second tap of the first linear feedback shift register for generating a random feedback bit for a time based upon the count signal. A second linear feedback shift register is connected to the feedback bit controller for generating a random number based upon the random feedback bit.

A method, system and a computer program product are provided for verifying ground truth data by iteratively clustering machine-annotated training set examples with validation set examples to identify and display one or more prioritized review candidate training set examples grouped with validation set examples meeting a predetermined misclassification criteria in order to solicit verification or correction feedback from a human subject matter expert for inclusion in an accepted training set.

The invention discloses a novel normal-pressure boiling dyeable biomass polyester fiber which comprises the following raw materials: 63-68wt% of terephthalic acid, 1.5-33wt% of biomass ethylene glycol, 1.5-33wt% of biomass 1,2-propanediol, 2-8wt% of monomer 5-sodiumsulfa bis-isophthalate (SIPE) and 0.01-0.03wt% of catalyst potassium fluotitanate. A preparation method of the polyester fiber comprises the following steps: performing esterification and polycondensation reaction on the raw materials to obtain a biomass polyester chip; and based on optimal fiber-spinning process parameters, producing to obtain the biomass polyester fiber having a normal-pressure boiling dyeable function. The fiber has the characteristics of natural softness, low static, favorable resilience and low-temperature dyeing, is boiling dyeable under normal pressure, has high dye-uptake rate and dye exhaustion rate, can be blended with a natural fiber such as wool and the like, has the advantages of cost saving, energy consumption reduction and clean production, can reduce the dependence of the chemical fiber industry on petroleum and can greatly relieve resource restriction and environment pressure.

The invention relates to a tetragonal phase high-entropy thermal barrier coating material. The material is formed by ZrO2, Y2O3, M2O3, Ta2O5 and Nb2O5 oxide powder, the component of the material is Zr1-4xYxMxTaxNbxO2, x is more than 0 and less than 0.25, and M is a trivalent rare earth element. The invention also relates to a preparation method of the tetragonal-phase high-entropy thermal barrier coating material. The preparation method comprises the following steps: calcining to remove adsorbed water and impurities in each oxide powder; performing high-energy ball milling; separating, washing and drying balls to obtain mixed powder; and pressing into a ceramic blank by using a ceramic tablet press, and heating to obtain the high-entropy ceramic block material. According to the tetragonal-phase high-entropy thermal barrier coating material, excellent thermodynamic properties are provided through multi-component high entropy, including reduction of heat conductivity, increase of thermal expansion coefficient, enhancement of fracture toughness, good high-temperature stability, excellent CMAS corrosion resistance and the like, and the tetragonal-phase high-entropy thermal barrier coating material has the potential of serving at a higher gas temperature.

The invention relates to a method for authorizing a communication with a portable electronic device, such as access to at least one memory area. The portable electronic device has a display for presenting an item of information visible to the outside and an interface for communication with the outside of the portable electronic device. The item of information is at least in part taken into account by the portable electronic device in order to authorize the communication. The method includes a step of optical reading of the item of information outside the portable electronic device. The method is distinguished in that it also includes a step of varying the item of information, the step of varying causing the item of information, termed the variable item of information, to vary at least in part. The invention also relates to the portable electronic device, and the system comprising the portable electronic device and an electronic communication or reading device.

The present invention comprises a polymer composition which is comprised of subcompositions which are separately stable within the polymer composition and methods of making the polymer compositions. These polymer compositions may be useful as coatings for paper, food packaging, vinyl, plastics, man-made substrates, wood and metal. An advantage of these polymer composition is that they are aqueous non-fluorocarbon polymers, which are less pollutive than state of the art polymer coatings.

The invention belongs to the field of wireless communication, and relates to a true random number generator applicable to a wireless communication system. Through improvement of the structure of a traditional true random number generator, the radio frequency receiving channel of the wireless communication system is taken as a true random number source and an extraction circuit, through adoption of a post processing circuit, the performance of true random numbers is ensured, and the traditional true random number generator provided by the invention has relatively high application value in aspects such as communication and information security. The specific structure of the traditional true random number generator is that the on-chip radio frequency receiving channel is multiplexed as the true random number source, noise signals of a reference source are obtained for amplification and processing, noises are quantified by an on-chip AD, the random numbers are extracted by an oscillator through an oscillation sampling method, and after the random numbers are processed by the post processing circuit, a true random number sequence is output. Compared with the prior art, an external noise source chip or an on-chi physical noise source is unnecessary. The cost and complexity of the system are reduced; the structure of the extraction circuit is simplified; and the discreteness and entropy of the random numbers are effectively improved.