353results about How to "With transparency" patented technology

The invention discloses a database information encryption method and a database information encryption system using the same, which belong to the technical field of information security. The method comprises the following steps of: encrypting a sensitive field in a datasheet through a cryptoequipment unit, and creating a homonymous view which points to the encrypted datasheet for the sensitive field; maintaining the use permission of a user to a key, and encrypting the used cryptoequipment unit, an encryption mode and the key; allowing a user with the permission to successfully read and modify encryption information; and for a user without the permission, using a random key for error decryption when the encryption information is read, and returning key acquisition failure information when the encryption information is modified. The system comprises a security management host and one or more database server hosts, and is provided with an abstract cryptoequipment module for providing a uniform encryption and decryption interface and calling one or more different cryptoequipment units to realize the encryption and decryption. The database information encryption method and the database information encryption system can be used for the encryption of database information.

The invention discloses a lightweight class privacy data encryption method and a system for an Android system and relates to the technical field of mobile communication devices. A to-be-protected sensitive file set is chosen in a file system, an encryption processing module and a decryption processing module are embedded into the Android system, and files in the sensitive file set are encrypted and stored so that a protected data base is generated. When an application program requests to visit the protected data base, a mirror of the protected data base of a plaintext can be obtained after the application program is verified by a secret key. The application program modifies the files in the protected data base by operating the plaintext mirror, and when the visit is over, the mirror is destroyed. The lightweight class privacy data encryption method and the system for the Android system aim at protecting the data base of a base layer of the system, a encryption function of the system can be used normally, a lightweight class encryption mechanism is added to the Android system to protect the privacy data files, and meanwhile system overhead is reduced.

The invention discloses a medical data platform based on the block chain technology. The medical data platform comprises a terminal, a server module, a data storage module and a block chain network. The terminal exchanges data with the data storage module and the block chain network through the server module. The server module comprises a communication server, an intermediate certificate server and a root certificate server and is used for processing data interaction between the modules and allocating certificates to the block chain network nodes. The data storage module comprises a medical information system and a distributed image database and is used for data storage. The block chain network comprises multiple institutional accounting nodes and multiple consensus nodes. The accounting nodes perform mutual data synchronization. The medical data platform based on the block chain technology has the advantages that the existing medical information is stored in the block chain shared account book so that all the medical institutions can share the medical information related to the patients, and the privacy protection function of the medical data can be realized by using the encryption algorithm and thus sharing of the medical data can be facilitated and the security of the sensitive information can also be protected.

The invention relates to a CAN bus-based pig house environmental temperature intelligent monitoring system. The system is characterized in that the intelligent monitoring system is composed of a CAN bus-based pig house environment parameter acquisition and intelligent prediction platform, a pig house environment multi-point temperature fusion model and a pig house environment intelligent prediction model. With the CAN bus-based pig house environmental temperature intelligent monitoring system of the present invention adopted, an existing pig house monitoring system cannot intelligently monitor and predict the temperature of the environment of a pig house according to the non-linearity and large lag of the environmental temperature change of the pig house, the large area of the pig house, complicated temperature change and other characteristics, as a result, control and adjustment of the environmental temperature of the pig house are seriously affected, while, with the CAN bus-based pig house environmental temperature intelligent monitoring system adopted, the above problem can be solved.

Substrates, in particular a substrate of glass, ceramic, plastic and metal and glazed or enamelled substrates, with a self-cleaning surface comprise an at least partly superficially hydrophobic structured (elevations and depressions) coating located on the substrate. Substrates according to the invention comprise particles with an average diameter of less than 100 nm, in particular 5 to less than 50 nm, for formation of the structure of the coating. Compositions according to the invention which are employed for the production of the structured coating of substrates according to the invention comprise, in addition to the structure-forming particles, a layer-forming material in a weight ratio of 100:1 to 1:2, in particular 20:1 to 1:1. In addition to having good self-cleaning properties, the coating is distinguished by its transparency. The use of the substrates is aimed in particular at the most diverse glass articles.

The present invention discloses a bidirectional stretched polypropylene single film and its preparation method. The single film is divided into upper, intermediate and lowr three-layer structure. Itsexternal layer is film anti-sticking smooth face layer. Intermediate layer is film core layer and lower layer is film anti-sticking smooth face layer. The upper layer is formed from homopolypolypropylene and anti-sticking slipping agent whose weight content is 0.2-6%, its intermediate layer contains homopolypolypropylene and its lower layer contains homopolypolypropylene and anti-sticking slipping agent whose weight content is 0.2-6%. Its production method includes the steps of preparing material, extruding, casting sheet, longitudinal stretching, transverse stretching and rolling up.

A Chinese semantic proofreading method based on ontology consistency verification and reasoning includes: using the ontology learning technology to extract semantic contents from non-structural natural Chinese languages, and converting the extracted semantic contents into structural ontology forms; establishing field ontology databases, and using corresponding ontology databases according to different fields; building models integrating the formed Chinese semantic proofreading key technology, in a form of plug-in, into a grammar verifying tool or using other implementation forms such as independent Chinese semantic verification software; in the grammar verifying tool, using the consistency reasoning and verification mechanism based on description logic and contained in the ontology reasoning language to sequentially perform consistency verification and reasoning on the extracted semantic contents and correct field ontology database input into a reasoning machine according to preset orders, and labeling error labels on the Chinese semantic contents, with inconsistent logic, in the reasoning result. By the method, word-level and grammar-level Chinese proofreading can be achieved, and Chinese semantic proofreading in special fields can also be achieved.

The invention discloses a self-healing sulfobetaine zwitterionic nano composite aquagel and a preparation method thereof. The aquagel is composed of a polymer matrix (accounting for 60-99 wt% of dried gel) and an inorganic component (accounting for 1-40 wt% of dried gel). The preparation method comprises the following steps: preparing a sulfonic acid zwitterionic compound, preparing a prepolymerization reaction solution, dissolving the inorganic component, sulfonic acid zwitterionic compound, hydroxyethyl methacrylate (HMEA) monomer and photoinitiator in deionized water until the mixed solution is dispersed uniformly, and finally, carrying out polymerization reaction for 1-3 hours under photoinitiation conditions, thereby obtaining the sulfobetaine zwitterionic nano composite aquagel. The prepared aquagel can implement self-healing without any external stimulus or specific environment requirement, and has excellent physical and mechanical properties.

The invention relates to a high-availability industrial Ethernet redundancy method, which comprises the following steps: adding a link redundancy entity on an original data link layer of the Ethernet for managing the sending and receiving of data frames of the Ethernet; setting two network adapter drivers relative to an original protocol stack for managing two network adapter interfaces; connecting a double-connected node which comprises the link redundancy entity and the two network adapter drivers to two independent networks respectively through two network adapters; adding a redundancy control tracker for the data frames on the link redundancy entity for distinguishing the data frames with the same content; sending the data frames which have the same content and is provided with the redundancy control tracker to two mutually-independent networks by the double-connected node through the two network adapters; keeping effective frames and discarding copy frames; and setting up a node table. The method has the characteristics of transparency, self-healing property and compatibility and the like; and the reconstruction thereof is simple, and the safety performance of the system is increased so as to enable the system to have high usability.

The invention discloses a college student digital personal credit investigation method based on a blockchain intelligent contract. The method comprises the following steps: a student node uploads a personal credit information original file to a storage layer, then deploys an intelligent contract containing personal credit basic information into a block chain network, and broadcasts the personal credit information original file through a consensus whole network, and each user node accesses the personal credit information original file by calling each module function of the intelligent contract.Based on the blockchain intelligent contract technology. The method is based on the blockchain intelligent contract technology, and has the characteristics of decentralization, public transparency, no tampering, convenience in tracing and reliability in database; and any user connected to the blockchain network and provided with the blockchain digital wallet can deploy the own intelligent contract, so that the credit investigation information of the user can be managed. According to the method, the problems of serious information centralization and serious counterfeiting of the existing digital personal credit investigation system are solved.

The invention relates to transparent polyamide and a preparation method thereof. The method provided by the invention utilizes a copolymerization approach and the structural characteristics of aliphatic diacid monomer and alicyclic diamine monomer structure, and aliphatic diacid and alicyclic diamine undergo copolymerization with an amide salt, thus obtaining the transparent polyamide material with light transmissivity up to over 80% in a visible wavelength range. Due to low crystallization rate and difficult grain growth of the transparent polyamide material during preparation, finally the transparent polyamide material with a microcrystal structural characteristic is formed. As the grain size of the crystalline portion constituting the transparent polyamide material with the microcrystal structural characteristic is smaller than the visible wavelength, the material has transparency. At the same time, the transparent polyamide material with the microcrystal structure still has a high degree of crystallinity, and can maintain high mechanical strength.

The invention discloses a blend of polylactic acid and modified cellulose, the preparation method thereof and a thermal-resistant polymer material. The blend is prepared from polylactic acid 70 to 10 weight parts, and modified cellulose 30 to 90 weight parts by blending. The polylactic acid/modified cellulose blend can be made into a thermal-resistant product with a thickness of 0.02 to 5 mm and a certain transparency by melting and shaping. Compared with polylactic acid matrix, the blend has higher thermal resistance and a certain transparency. The thermal-resistant polymer material prepared from polylactic acid and modified cellulose has excellent thermal resistance and a certain transparency.

The invention discloses a low temperature resistant triple coextrusion composite film and a preparation method thereof. The composite film in the invention is formed through carrying out triple coextrusion by a casting machine, and comprises an outer layer, a middle layer and an inner layer which are composited together; the materials of the middle layer adopt metallocene low-density linear polyethylene and polypropylene at the mass ratio of 1:10-1:1; and the melt index of the metallocene low-density linear polyethylene is 1-3.5. After the scheme is adopted, compared with the traditional CPP film, the low temperature resistant triple coextrusion composite film of the invention has the advantages of greatly improving the low temperature resistant and freezing resistance performance, being capable of being normally used under the environment of minus 30 DEG C, having no influence on the barrier property and strength thereof and being particularly suitable for packaging of quick frozen products such as boiled dumplings, sweet soup balls and the like.

The invention discloses an electric vehicle power battery SOC intelligent detection device which is characterized in that the intelligent detection device includes a battery parameter acquisition platform and a battery SOC estimation system, the battery parameter acquisition platform collects real-time parameters of voltage, current and temperature of an electric vehicle power battery group, the battery SOC estimation system estimates an SOC value through the collected parameters, and a battery SOC system is a nonlinear, time-delay and multivariable coupling complex real-time system with a high requirement. According to the device, a problem that a conventional detection device can not obtain an ideal effect of the intelligent detection of the electric vehicle power battery SOC.

The invention discloses a micro motor infusion pump which comprises an infusion board assembly and a motor driving device. The infusion board assembly comprises one-way valves, elastic pump tubes, an air elimination diaphragm and an impedance probe which are integrated on an infusion substrate; the liquid inlet channel and the liquid outlet channel of the infusion substrate are respectively connected with an infusion bag and the air elimination diaphragm; both ends of the liquid inlet channel and the liquid outlet channels are connected with two parallel pump tubes, and are respectively provided with the on-way valves; the air elimination diaphragm is integrated on the substrate, the cavity of the diaphragm is provided with a hydrophilic air barrier film, and the bottom of the lower cavity thereof is provided with an air elimination hole with an exhaust diaphragm; the impedance probe is arranged at a liquid outlet; and the microcomputer part swings through a swinging extrusion head to alternatively press the elastic pump tubes, so as to output the liquid in one way. The micro motor infusion pump integrates the one-way valve double pump tubes, the air elimination diaphragm and an impedance sensor, has the function of eliminating the gas contained in the liquid in the pump, can realize air volume ultra-limit alarm and blocking alarm, and has the advantages of micro-power, low power consumption, small size and convenient carrying.

The invention discloses a preparation method of a pressure sensor based on collagen film. The method comprises the following steps that hide powder is dissolved in an ionic liquid for the formation of a homogeneous and transparent collagen solution, a substrate is spin-coated with the collagen solution for the formation of a uniform film, then the substrate is soaked in deionized water and washed, the film is taken out for drying till a constant weight is reached, and a regenerated collagen film is obtained; a layer of electrode is smeared on a collagen film with the method of template, while a layer of conductive material is smeared on the other collagen film with the method of spin-coating, and the two layers are made in contact and compressed, so that the preparation of the flexible pressure sensor is completed. The preparation method has the advantages of simple preparation method, convenient material selection, low cost, high sensitivity and biodegradability of the prepared flexible pressure sensor, and can be applied to the detection of human's limb activities and voice recognition, thereby having a far-reaching effect on the development of portable flexible devices.

A photosensitive resin composition with enough process range to prevent the contamination of the baking oven and photo cover film from sublimation of the photo polymeric initiator, and having the nature of tight annealing, transparency and thermal resisting of which the protection film and the compression of which spacer material. The photo polymeric initiator composed of: [A](a1) ethylene unsaturated carboxylic acid and/or ethylene unsaturated carboxylic acid anhydride, and another polymer of ethylene unsaturated compound; [B]polymeric compound with ethylene unsaturated bond; and [C] a photo polymeric initiator consisting of the compound presented as following formula(1): wherein, n is integer of 2~12, R1 represent H, hydroxyl group or any one group with structure represented (I), (II) and (III); R2 of (III) is C1~C12 alkyl, C3~C8 cycloalkyl or phenyl group (wherein which could be substituted by any one of at least one or more C1~C6 alkyl, C1~C6 alkyloxy),

The invention discloses a biodegradable polylactic acid agricultural mulching film and a processing technology thereof, and relates to the technical field of agricultural mulching films. The biodegradable polylactic acid agricultural mulching film is prepared from the following raw materials in parts by weight: 100-120 parts of polylactic resin, 15-30 parts of light calcium carbonate, 5-10 parts of polypropylene carbonate, 5-10 parts of carboxymethyl-beta-cyclodextrin, 1-5 parts of PEG-60 hydrogenated castor oil, 1-5 parts of hexakis(methoxymethyl)melamine, 1-5 parts of ultraviolet screening agent and 0.5-2 parts of antioxidant. According to the biodegradable polylactic acid agricultural mulching film and the processing technology thereof, the polylactic acid film is prepared by taking thepolylactic resin as a main material and co-taking a plurality of auxiliary materials, and the prepared polylactic acid film belongs to the biodegradable film and is non-toxic, harmless and strong inuse environmental protection property; and in addition, the usability is excellent, and the use requirement of the agricultural mulching film is met.

The invention provides a GDPR compliance supervision method and system based on an alliance chain, and the method comprises the steps: enabling a service provider and a supervision mechanism to carryout the real-name registration in the alliance chain, enabling the service provider to be registered as a service node, and carrying out the accounting node election and block generation according tothe credibility of the service node; the permission record of the data subject is encrypted and stored in the alliance block chain through the smart contract; the data subject is granted permission toaccess the alliance block chain, and when the data controller transmits personal information to the data processor, the agreement of the related data subject is needed, and the transaction also stores a data flow record through the smart contract; and during compliance investigation, submitting a traceability request to the alliance block chain by the supervision institution, and tracing to obtain a record by the alliance block chain service network according to the request. According to the method, the expansibility and the tamper resistance of the block chain are utilized so that the privacy right endowed by the user to drive the GDPR and the efficiency of a service provider to abide by the GDPR compliance can be effectively improved from the aspect of technical support, and the compliance and supervision cost is reduced.

The invention discloses a thermoforming method of a co-woven continuous fiber reinforced thermoplastic structural plate. The method comprises: first co-weaving prepreg into sheet or band prepreg on a braiding machine; spreading the prepreg on a die and conducting sealing with a vacuum bag or a polyester film; then raising the temperature, carrying out vacuum pumping to maintain a vacuum negative pressure, when the temperature reaches the melting point of thermoplastic resin, preserving the heat for a period of time, then performing cooling for molding; finally dismounting the vacuum bag or the polyester film so as to obtain a structural plate. The structural plate produced by the co-weaving method can expel air among the internal layers of the prepreg. Pressure is transmitted uniformly through fibers, so that shift in fiber direction can be avoided, and the structural plate also can be reinforced based on original enhanced fibers, thus substantially saving cost.