58results about How to "Ensure transparency" patented technology

The invention discloses a credit information service method based on the Internet, and the method comprises the following steps: 1, an enterprise carries out the construction of a credit information system through the entrustment of a third-party credit investigation mechanism, and carries out the full collection of the credit information data of related business departments through the authorization of the third-party credit investigation mechanism; 2, indexes are selected in combination with the characteristics of the enterprises and the departments of the enterprises, all the indexes are divided into qualitative indexes and quantitative indexes by adopting a qualitative and quantitative combined method, and a credit evaluation index system is constructed; 3, business credit information of all departments of the enterprise and information mastered by calling terminals and credit third-party mechanisms from other interfaces are shared and publicized; the credit information state of the enterprise is a dynamic process, real-time updating of departments and other terminal users generating the credit information in the enterprise can be guaranteed based on the dynamic process, and the method has the advantages of improving the transparency of the credit of the enterprise and improving the service management efficiency.

The application discloses a kind of Phascolosoma esculenta seedling cultivation methods, it is related to the technical field of mariculture.(1) parent culture;(2) labor induction;(3) sea ball larva cultivation;(4) the preparation of benthic cultivation pool;(5) planktonic larva metamorphosis induction;(6) the cultivation management of benthic larva.The application can effectively improve the efficiency of feeding sea mud of creeping stage larva, improve the dissolved oxygen in silt substrate, reduce the low dissolved oxygen caused by accumulated water during the process of dry, and the high mortality rate.

The invention discloses a dual-core heterogeneous isolation anti-cheating system oriented to a metering task and an implementation method. The system comprises a trusted processing core which is responsible for functions of hardware trust root management, program legality authentication, peripheral management and control, resource access authorization and the like and is completely isolated from a metering service core; all external interactions are carried out through the trusted processing core, so that the security is ensured; the metering service core focuses on executing specific tasks and efficiently processing data; the secure storage area is only accessed by the trusted processing core to protect the security of key information; the business storage area is used for storing an operation program and temporary data of the metering business core and supporting update after verification; the lightweight interaction mechanism ensures that the metering service core interacts with the trusted processing core through the trusted channel via the information carrying the specific identifier when the peripheral needs to be accessed or the interrupt needs to be processed. By implementing the method provided by the invention, not only can comprehensive management and control on peripherals, whole-process encryption on data and whole-process recording on operation behaviors be realized, but also the metering safety and the system efficiency can be effectively balanced.

The utility model relates to a protective device for unmanned plane, the protective device for unmanned plane through being provided with the protection spare, can realize the good protection effect to the camera in the process of using, thereby avoided the damage under the action of external force, through transmission member and camera transmission connection, can drive transmission member to produce the rotation, thereby avoided transmission member in the process of protecting the camera and the outer surface attached with the rain and snow or other impurities, thereby influence the definition in the camera shooting process, through the protection cover is hemispherical, its material is transparent acryl material, can further reduce the attachment of rain and snow in the process of using, when the rain and snow fall on the arc surface can flow away quickly. Through setting up acryl material, on one hand can guarantee its transparency, on the other hand can guarantee that it can have good mechanical properties.

The invention discloses an air filtering and deodorizing system for livestock breeding, and relates to the technical field of air purification. The system comprises a box body and a fan for driving airflow, wherein a water curtain mechanism, a water vapor removing mechanism and a filter element layer are sequentially arranged in the box body along the airflow direction. The water curtain mechanism comprises a rotatable outer net cylinder and an inner filter cylinder capable of axially moving, a rotary driving assembly is matched with an axial driving assembly, a water curtain is formed in combination with a water supply assembly, and composite self-cleaning of rotary centrifugation, mutual friction, axial scraping and high-pressure water flushing is achieved. And the problem of wet curtain argillization and blockage caused by high-load dust meeting water is fundamentally solved. The water vapor removing mechanism is used for removing water in the air flow through a water absorbing piece capable of rotating and extruding and regenerating on line. According to the invention, continuous and efficient air filtration and deodorization are realized, and continuous and stable operation of the system under complex breeding working conditions is ensured.

The invention belongs to the technical field of communication engineering, and particularly relates to a test method and system for a vehicle-mounted antenna, and the system comprises an environment feature sensing module, a dynamic excitation generation module, a vehicle-mounted antenna interface unit, a multi-channel radio frequency collection module, a state synchronization controller and a closed-loop verification engine. Through the synergistic effect of the environment characteristic sensing module and the dynamic excitation generation module, electromagnetic-physical disturbance in a real road is converted into a programmable test variable instead of a passively suppressed noise source; the physical information neural network model in the closed-loop verification engine can be used to complete performance prediction and deviation determination in a single test period, and self-adaptive convergence of the test process is realized.

The utility model discloses a kind of remote visual brine concentration monitoring devices and steam injection boiler water treatment system, brine concentration monitoring device includes measuring assembly, the measuring assembly includes measuring tube assembly, brine hydrometer, measuring tube cleaning assembly;The measuring tube assembly includes water storage pipe, the brine hydrometer, measuring tube cleaning assembly is arranged in water storage pipe, the water storage pipe is transparent material;The measuring tube cleaning assembly includes fixed disc, pull handle is set on the fixed disc upper end, cleaning piece is set on the fixed disc outer ring, the cleaning piece is contacted with water storage pipe inner wall.The brine concentration monitoring device of the utility model is simple in structure, can complete coarse salt brine concentration monitoring, can be stably operated in steam injection boiler water treatment system, and setting water storage pipe cleaning assembly is convenient to clean water storage pipe, keep transparency, improve the definition when observing brine hydrometer scale outside.

The application relates to the technical field of sewage treatment, in particular to a wastewater treatment device based on electrolytic lead resource utilization. The device comprises a mounting base, a sewage treatment box body is fixedly installed at the upper end of the mounting base, a sealing plate is installed at the upper end of the sewage treatment box body, a distribution box is fixedly installed at the front end of the sewage treatment box body, and a water inlet pipeline is connected to the front end of the sewage treatment box body. A pretreatment pool is arranged in the sewage treatment box body, a reaction pool is arranged in the sewage treatment box body, the reaction pool is in interpenetration with the pretreatment pool through a water conveying pipeline, an anaerobic pool and an aerobic pool are arranged in the sewage treatment box body, a filter core body is fixedly installed in the reaction pool, and the reaction pool is in interpenetration with the anaerobic pool and the aerobic pool through a pipeline on the filter core body. The automatic cleaning filter core, the hydraulic linkage filter screen cleaning and the stirring disturbance water body are matched, the device can effectively prevent blockage and ensure smoothness, and the electrolytic lead wastewater precipitation purification effect and operation stability are improved.

This invention discloses an artificial intelligence-based distribution management method, system, device, and medium, relating to the field of intelligent distribution management technology. The method includes: S1, data collection; S2, hierarchical identification of referral relationships; S3, intelligent calculation of multi-dimensional rewards; S4, intelligent calculation of regional profit sharing; S5, integrated reporting of distribution operation data; and S6, intelligent optimization of the distribution mechanism. This invention relies on a compliant two-tier distribution core architecture, combined with scientific hierarchical determination, diversified rewards, and support mechanisms. It avoids the compliance risks of multi-level distribution and, through the "first to get rich, then to get rich later" support logic and fair and reasonable profit distribution rules, fully stimulates the promotional enthusiasm of participants at all levels, promoting the stable and sustainable expansion of the distribution network. By using artificial intelligence technology to accurately process data throughout the entire distribution process, it simplifies the entry and operation processes for participants, eliminates the pressure of inventory buildup, lowers the entry threshold, and reduces participation costs.

This invention relates to a method and system for accessing the trusted space of inland waterway shipping data under zero-trust conditions. It includes defining the shipping trust status and transformation rules of participating entities, constructing a risk scoring model to calculate the risk score of shipping behavior, introducing federated learning to improve the accuracy of the shipping behavior risk score, constructing a trust calculation function to calculate dynamic trust values ​​in real time, designing hierarchical access decision rules for hierarchical authorization to achieve access control, and submitting the hash value of logs to the blockchain to drive the update of shipping trust status, forming a closed loop of credit update and access control. This invention provides a systematic solution for the Jianghuai inland waterway shipping industry that balances strict security, business efficiency, and compliance requirements, achieving the coordinated evolution and proactive improvement of the security defense capabilities of the entire Jianghuai inland waterway shipping ecosystem.

The present invention provides an ice maker, comprising: a first tray assembly forming part of an ice-making compartment, the ice-making compartment forming a space in which water changes phase to ice due to a cold flow; a second tray assembly forming another part of the ice-making compartment; a cooler for supplying a cold flow to the ice-making compartment; a heater for supplying heat to the ice-making compartment; and a control unit for controlling the heater. The first tray assembly includes a first tray defining a part of the ice-making compartment, the second tray assembly includes a second tray defining another part of the ice-making compartment and a second tray housing supporting the second tray, the second tray housing including a second tray cover, at least a portion of the second tray cover being located on one side of the second tray, the second tray cover including an opening for insertion of a portion of the second tray.

The utility model relates to the technical field of tumor cell metastasis models, in particular to a breast cancer circulating tumor cell remote metastasis model which comprises a base and a fixing rod, the fixing rod is fixedly connected to the base, the fixing rod is fixedly connected with a brain metastasis model, a placing component is installed on the brain metastasis model, and the placing component is fixedly connected with the brain metastasis model. The placing part comprises an inclined plate, a fixed plate, a movable plate, a pressed plate, a straight spring and a collecting box, the inclined plate is fixedly connected in the brain metastasis model, the clamping plate clamps small balls with different colors through the matching effect of the extrusion rod, the movable plate, the collecting box and other parts, the small balls can be taken out by pulling the clamping plate, and the small balls can be conveniently taken out. And residual water is left in the collecting box, so that the small balls can be quickly taken out, meanwhile, no water drips on the outer surface of the model, the situation that the transparency of the model is affected by water marks generated on the outer surface of the model due to water dripping is avoided, and the transparency of the organ model and the cleanliness of a placement environment are guaranteed.

The invention belongs to the technical field of water conservancy projects, and provides a dam mass data distributed processing method based on a cloud computing architecture, which comprises the following steps: S1, performing unified access and standardized description on multi-source heterogeneous dam monitoring data, and generating a structured data object with a spatio-temporal index; s2, performing adaptive data fragmentation and distributed storage optimization based on space-time attributes and access features of the data objects; s3, according to the characteristics and resource requirements of the computing tasks, constructing a dynamic extensible parallel computing workflow; s4, in the process of executing the parallel computing workflow, implementing resource flexible scheduling and task migration based on load feedback; and S5, performing multi-dimensional aggregation on the processing result, and feeding back to the data storage layer.

The application discloses a kind of based on multi-dimensional data fusion's campus intelligent consumption analysis system and method, it is related to electric digital data processing technical field.The system includes terminal feature fusion, abnormality identification analysis processing, classification verification and synchronous three big modules.Terminal feature fusion module fuses terminal feature data and time feature data in original multidimensional data, generates behavior correlation feature, reduces data dispersion;Abnormality identification analysis processing module carries out abnormality identification and processing to behavior correlation feature, forms feature data set and verifies validity, improves detection accuracy;Classification verification and synchronous module uploads the classification result after verification as core data set to specified service platform, and synchronizes to its database, improves platform processing efficiency.Through multi-module cooperation, the efficient fusion of campus consumption data, accurate anomaly detection and data synchronization are realized, and the comprehensiveness of campus consumption analysis and service platform processing efficiency are improved.

This application provides a human-computer interaction method and system for emergency rescue scenarios. The method involves parsing and processing the multimedia information received from an emergency rescue requester to obtain an emergency rescue situation awareness model. Based on this model, a deep reinforcement learning algorithm is used to select possible emergency response strategies. Medical knowledge graph technology is then used to analyze the relationship between the requester's symptoms and possible causes to generate an emergency rescue guidance plan. Based on this guidance plan, a traffic flow prediction algorithm is used to optimize the rescue route in real time. Combined with road condition information collected using IoT technology, the route of the rescue vehicle is dynamically adjusted to generate an optimal rescue route and the latest rescue progress notification. Finally, the optimal rescue route and the latest progress notification are used to visualize the emergency rescue operation process, generating intuitive visual guidance. The technical solution provided by this application significantly improves the speed, accuracy, and effectiveness of emergency response.

This invention discloses a polyester material, a heat-shrinkable film, its preparation method, and its applications. The raw materials for preparing the polyester material include a diacid, a diol, a chain extender, a stabilizer, and a catalyst; wherein the diacid comprises: 90 mol%~95 mol% polyterephthalic acid and 5 mol%~10 mol% isophthalic acid; the diol comprises: 65 mol%~78 mol% ethylene glycol, 18 mol%~28 mol% 1,4-cyclohexanediol, and 4 mol%~12 mol% diethylene glycol; the chain extender is 2,2'-(1,3-phenylene)-dioxazoline, added in an amount of 0.2%~0.8% of the total mass of the diol and the diacid; the molar ratio of carboxyl groups to hydroxyl groups in the diacid and the diol is 1:1~1.05. The polyester material of this invention possesses excellent transparency, shrinkage rate, and strength, and has a low initial shrinkage temperature, making it particularly suitable for applications such as heat-shrinkable films. This invention also provides a heat-shrinkable film, as well as the polyester material, a method for preparing the heat-shrinkable film, and their applications.

The invention discloses an information processing method of a content distribution network and a program product. The method comprises the steps that resource registration information of a resource registration party is received through a resource opening node, the resource registration information is stored in a block chain network, and the resource registration information is used for indicating network resource information which can be used by a content distribution network and the resource registration party of the network resource information; a content access request is received through the content distribution network, resource scheduling is performed through the content distribution network and the resource registration information, a content distribution operation corresponding to the content access request is executed based on the resource registration information, and resource scheduling information corresponding to the content distribution operation is stored in a block chain network; and calling an intelligent contract of the block chain network, and determining resource feedback information of the network resource information according to the resource registration information and the resource scheduling information. According to the technical scheme, more efficient, transparent and secure content distribution service can be provided, and the user experience is remarkably improved.

The utility model relates to the field of chicken manure processing especially relates to a drying device for producing chicken manure organic fertilizer, including first installation frame, first installation frame top is equipped with second installation frame, first installation frame rear side is provided with hot -blast module, second installation frame top is provided with moisture removal module, first installation frame middle part rear side is provided with vibrator, first installation frame inside is provided with filter screen, and second installation frame is provided with anti -sticking mechanism inside. The utility model discloses through horizontal vibration conveying design combination hot -blast and moisture removal, make material side conveying side turn over and throw, heat evenly dry quickly, and integrated type anti -sticking mechanism can automatically drive cleaning brush repeatedly scrape off filter screen surface initial sticky material, reduce manual cleaning frequency, and the strong guarantee filter screen permeability and heat exchange efficiency, baffle controls the discharging time, ensures that the material reaches the preset drying requirement of discharging.

The application discloses a copolymer hydrogel coating capable of realizing efficient transparent passive cooling and a preparation method and application thereof, and belongs to the technical field of passive radiation cooling, wherein the main body is poly(N-isopropyl acrylamide-acrylamide) copolymer hydrogel, and the copolymer hydrogel is prepared by using a photopolymerization method with N-isopropyl acrylamide and acrylamide in a copolymerization ratio of 1:1. The copolymer hydrogel coating has high light transmittance and efficient cooling capacity, the transmittance of the coating is 92%-98% in the ultraviolet-visible light band with a wavelength of 0.5 microns-1.1 microns, the emissivity of the coating is 88%-95% in the infrared band with a wavelength of 2.5-16.0 microns, and the infrared emissivity of the coating in the atmospheric transparent window (8-13 micron band) is 92%-95%. The method has the advantages of simple preparation process, short period, greenness and no pollution, and can realize mass industrial production.

The application provides a kind of on-chain and off-chain data consistency verification method of RWA asset transaction, comprising: (1) deploying smart contract in blockchain network;(2) obtain chain transfer record and off-chain transaction order;(3) generate standardized data unit DU;(4) calculate off-chain root hash;(5) calculate on-chain root hash;(6) compare off-chain root hash with on-chain root hash;(7) if inconsistent, generate random sampling index set;(8) locate Merkle path proof;(9) verify Merkle path proof;(10) generate structured difference report.The application provides an efficient, automated, dynamically updated, privacy-protected and compliant consistency verification solution without introducing centralized risk, ultimately improving the data credibility and reconciliation efficiency of RWA asset transaction, reducing business risk and operation cost, and adapting to the actual needs of high-frequency and large-scale RWA transaction scenarios.

The present application belongs to the field of language processing, and specifically relates to a multi-causal relationship extraction method and system for intelligent evaluation, aiming to solve the problems of performance bottleneck, significant "bucket effect", and insufficient adaptability and integration caused by relying on multiple independent models. The present application comprises: constructing a causal analysis prompt template for generating step-by-step reasoning as a thinking chain prompt word, combining the original corpus to generate a fine-tuning corpus, inputting into a large language model for training, and adopting low-rank adaptation technology to fine-tune the large language model during the training process to obtain a causal relationship extraction model; inputting the corpus to be extracted into the causal relationship extraction model, and outputting the causal relationship extraction result; generating a comprehensive evaluation result and decision suggestion. The present application improves the efficiency and quality of the multi-causal relationship extraction task, enhances the stability and adaptability of the system, and at the same time reduces the labor cost and provides scientific and reliable evaluation results and decision suggestions.

The application provides a purification and noise elimination integrated secondary return air structure of an air handling unit and a method thereof, and belongs to the technical field of air handling units, wherein the purification and noise elimination integrated secondary return air structure of the air handling unit comprises: an air handling unit, the inside of the air handling unit is provided with a vertical partition plate, a horizontal partition plate, a fan, a fine filter screen and a linkage mechanism, the top and bottom of the horizontal partition plate are respectively provided with a first filter screen and a second filter screen, the top and bottom of the air handling unit are provided with driving mechanisms, the top end of the linkage mechanism is connected with a monitoring mechanism, and the upper side and the lower side of the horizontal partition plate are respectively provided with a secondary return air bin and a primary return air bin. The application utilizes airflow to drive linkage blades to rotate, drives a rotating rail to operate through meshing transmission of bevel gears, and accurately corresponds to the actual air flow rate inside the unit by means of a pressure sensor to sense pressure value changes, so that additional independent speed measuring equipment is not needed, and the real-time performance and accuracy of airflow monitoring are ensured.

The invention provides a lure capable of ensuring transparency of a lip part and impact resistance of a trunk part at the same time. The lure (1) comprises a torso portion (3) and a lip portion (5). The torso portion (3) has a head portion (13a) at a front portion and a tail portion (13b) at a rear portion, and is formed of a first biodegradable material. The lip section (5) is provided to the front part of the trunk section (3) as a separate member from the trunk section (3). The lip (5) is formed of a second biodegradable material.

The utility model provides intelligent tunnel lighting equipment, which relates to the technical field of tunnel lighting and comprises a mounting frame and a lampshade, a lighting lamp body is arranged in the lampshade, a central control component is arranged in the lampshade, and a light sensor, an infrared sensor and a fog sensor are arranged on the outer side of the lampshade. The central control assembly is arranged in the lampshade and electrically connected with the light sensor, the infrared sensor and the fog sensor, the brightness of the illuminating lamp body can be intelligently controlled according to illumination, personnel and vehicle activities and fog conditions in a tunnel, energy is saved, and meanwhile the illumination requirement in the tunnel is guaranteed; and when the fog sensor detects fog, the central control assembly controls the motor to start, the motor drives the threaded rod to rotate, and the threaded rod is in threaded connection with the connecting block, so that the rubber water scraping plate is driven to slide back and forth in the cleaning frame along the surface of the lampshade, the fog is scraped, the transparency of the lampshade is kept, and the lighting effect is ensured.

A large language model attack detection method based on blockchain. It includes the steps of constructing a large language model prompt attack defense system; a user sends a query to a large language model; the large language model responds and generates output content; generate interaction information pairs; upload the interaction information to the blockchain; the detector detects, generates a detection result and stores it to the blockchain; and according to the detection result, judge whether the user needs to be punished or not. The application utilizes the non-tamperable nature of the blockchain, and the user query and the large language model response are permanently recorded on the blockchain, providing a reliable audit tracking mechanism. All key interaction information and detector detection results are recorded on the blockchain, providing a clear responsibility and behavior record for users. The detection query content is detected simultaneously with user behavior detection to check whether the user has abnormal queries. User and large language model interaction is carried out off-chain, only key information is recorded on the blockchain, reducing the cost.

This utility model discloses a backlight device for a motorcycle LCD instrument panel, including an LCD instrument box and an observation window located inside the front side of the LCD instrument box. Instrument indicators are located at the left and right ends of the inner side of the observation window, with an instrument pointer positioned between the two indicators. A sliding plate is located inside and outside the left end of the observation window, with a thick fiber cloth connected to the left side of the sliding plate. A torsion spring is connected to the left end of the thick fiber cloth. During driving, dust accumulation and fogging of the observation window can obstruct the driver's vision, affecting their judgment of key parameters such as speed and fuel level. Traditional cleaning methods require stopping the vehicle, which not only delays the journey but may also pose safety hazards in emergencies. The innovative cleaning system allows the driver to complete the cleaning by pulling a cord with one hand. The entire process does not require stopping, and the cord runs along the outside of the observation window without obstructing the driver's vision, ensuring uninterrupted driving and significantly improving driving safety.

The application relates to a controllable feeding frame of a cover plate screen printing machine, and relates to the technical field of glass processing.The controllable feeding frame comprises an extension base connected to one side of a feeding station of the screen printing machine, two connecting rods, a mounting frame, two driving cylinders and two connecting rods II.The two connecting rods are symmetrically connected to the two sides of the extension base.The mounting frame comprises a fixing frame and two clamping rods slidingly embedded in the fixing frame.The fixing frame is symmetrically provided with the two driving cylinders connected with the two clamping rods.The two connecting rods II are symmetrically connected to the two sides of the extension base, and the distance between the connecting rod II on the same side of the extension base and the connecting rod I is equal to the width of the fixing frame.The driving wheel is fixedly connected with the hinged end of the connecting rod I, and the extension base is provided with a driving motor.The other end of the two connecting rods II is hinged to the fixing frame, and the mounting frame is always kept horizontal.The application can conveniently and stably convey the glass to the station of the screen printing machine, ensures that the glass cannot be rubbed with the parts of the screen printing machine, and improves the quality of the processed glass products.

The invention discloses a zero-knowledge proof-based multi-platform data aggregation financing proof system and method, and the system comprises an enterprise terminal which is used for transmitting a financing application to a financial institution; generating an encrypted random number pair for each business platform, and uploading the encrypted random number pair to the block chain; obtaining a Pedersen promise value from a plurality of service platforms, generating an aggregation promise, a financing condition and a zero-knowledge proof based on the Pedersen promise value, and uploading the aggregation promise, the financing condition and the zero-knowledge proof to a block chain as an intelligent contract; the plurality of service platforms are used for obtaining the encrypted random number uploaded by the enterprise terminal from the block chain and decrypting the encrypted random number to obtain a random number; each business platform calculates a Pedersen commitment value of the enterprise data based on the random number, and uploads the Pedersen commitment value to the block chain; the financial institution is used for obtaining the intelligent contract from the block chain, verifying the aggregation commitment, the condition commitment and the zero-knowledge proof to verify whether the enterprise meets the financing condition or not; and the block chain is used for storing the encrypted random data and the smart contract. And safe and efficient credit voucher generation and verification are realized.

The application relates to a kind of implementation methods of verifiable Internet of Things device data asset transaction, based on the data seller, blockchain and data buyer involved in Internet of Things data asset transaction system, the process for realizing verifiable data asset transaction is as follows: data seller publishes encrypted data on blockchain through smart contract, data buyer requests data according to needs and submits verification request.Smart contract is responsible for verifying the integrity and authenticity of data, and transmits decryption key to data buyer after verification.The data buyer decrypts the data using the key and completes the transaction.If the buyer finds that the decrypted data is abnormal, the smart contract is called to initiate arbitration.Through the confusion encryption mode, RSA accumulator technology, hash verification mechanism and on-chain arbitration mechanism, these attack behaviors are effectively resisted, and the privacy, integrity and verifiability of data transaction are ensured.

The utility model discloses a kind of front arc glass window combination end head island cabinet, involve display cabinet field.The front arc glass window combination end head island cabinet, including island cabinet body and two groups of slide rails being opened in inner wall, further include arc glass window, the arc glass window is slidably installed in the inside of slide rail, two groups of arc glass window are along slide rail relative sliding, two groups of arc glass window can be sealed closed to the top of island cabinet body and use, adjusting partition component, multiple adjusting partition components are arranged in the inner chamber of island cabinet body, by the inside snap-fit installation adjusting partition component of mounting seat, the partition of island cabinet body inside inclination or horizontal space can be quickly completed, adapt to the storage demand of different length and shape, improve device applicability, when not needing partition space, reverse push clamping block, stretch partition net contraction and accomodate, do not occupy additional space.