203 results about "Electronic contracts" patented technology

The invention discloses a contract generation method based on an interactive big language model, and belongs to the technical field of electronic contract generation, and the method comprises the steps: S1, carrying out the contract template confirmation of a law big model and a user interactive question and answer; s2, after the contract category is confirmed by the law big model, legal terms associated with the contract category are retrieved by semantic matching through the fine-tuned embedding model, and contract generation and contract risk review are assisted; s3, transmitting the retrieved legal clauses and contract templates to a large law model through an RAG technology, and assisting the model to generate a specific contract; s4, after the law big model obtains the contract template and the law terms related to the contract category, the law big model interactively communicates with the user to determine the final content of the contract; s5, according to the final content of the contract, the contract is output after being subjected to standardization and logic processing, and the required contract is generated; according to the invention, the integrity and accuracy of information are effectively ensured, and the quality and reliability of contract generation are improved.

The invention discloses an electronic contract signing method based on block chain evidence storage, and particularly relates to the technical field of electronic evidence preservation and intelligent contracts. Obtaining original data of the electronic contract and generating a hash abstract; setting a plurality of candidate block chain networks as evidence storage target chains; the transaction density index and the network propagation lag degree of each chain are collected in real time; inputting the parameters into a risk scoring model, and calculating a comprehensive risk score; executing a strategic broadcast operation according to a scoring result; monitoring a transaction confirmation state, and selecting a first block chain reaching a set confirmation number as a main storage certificate chain; when the evidence storage fails, under-chain supplementary evidence storage or re-broadcasting is triggered; according to the method, the chain state can be dynamically sensed, the optimal evidence storage path can be adaptively selected, the uplink success rate and the legal efficacy of the electronic contract are effectively improved, and the method has high disaster tolerance and cross-chain applicability and is suitable for scenes such as judicial, finance and government affairs with high evidence reliability requirements.

The invention provides a human resource management interaction method, system and device and a medium, and relates to the technical field of human resource management.The method comprises the steps that firstly, organizational structure management, electronic contract signing and employee management functions are unified in a single interface through full-process integrated operation, the time cost of multi-module switching is reduced, one-stop processing is achieved, and the management efficiency is improved; the processing efficiency of the human resource business is improved; secondly, realizing dynamic organization architecture management based on a tree diagram structure, allowing real-time adjustment of a department and post hierarchical relationship, generating a version snapshot with a timestamp, ensuring real-time performance and traceability of data, and avoiding errors caused by a traditional static architecture; furthermore, the electronic contract voucher is directly associated with the employee archive, so that the consistency of contract data, the organization structure and the employee state is ensured, and the data security is enhanced; and finally, related configuration is executed by using the current organization structure version snapshot and the electronic contract certificate, and real-time linkage of organization structure change and employee adjustment is realized.

The invention discloses an automobile money returning method and system, electronic equipment and a storage medium, and relates to the field of automobile finance. The method comprises the following steps: firstly, acquiring a policy text and financial refunding flow data, analyzing the policy text through a natural language processing algorithm, and associating the policy text with the financial refunding flow data to generate a structured data set; and then, constructing a decision tree rule base, and randomly sampling a rebate period and a rebate proportion by using a Monte Carlo simulation engine to generate a profit distribution map. And then dealer qualification data and money return behavior data are obtained, a credit score value is calculated through a machine learning model, and a target scheme is screened from the income distribution diagram according to the credit score value. And finally, based on the target scheme, an electronic contract matched with the credit rating of the dealer is automatically generated through an intelligent contract, and a money return process is executed. By implementing the technical scheme provided by the invention, a solution integrating policy analysis, risk income prediction and credit assessment can be obtained.

The invention discloses a factoring contract service system based on artificial intelligence, and belongs to the technical field of factoring services, and the system comprises a data storage module which builds a database and a local knowledge base, carries out the classified storage of enterprise information, laws and regulations, industry regulations, contract templates, historical judicial cases and historical file contracts, and stores the enterprise information, the laws and regulations, the industry regulations, the contract templates and the historical file contracts; the intelligent file identification module is used for extracting, identifying and verifying information contents of file contracts, judging whether the file contracts are compliant or not, identifying non-compliant texts, judging risk levels, analyzing risk reasons and finally providing text contents after rectification and compliance based on contract review rules, and the enterprise query and auditing module is used for querying and auditing enterprise information. The intelligent contract generation module deploys an intelligent contract large model and reads in contract variables to generate a factoring electronic contract, the online contract signing module uploads, verifies and registers the factoring electronic contract, online signing is carried out by a financing enterprise, a platform operator and a fund party, the contract generation and signing efficiency is improved, and the legal risk is reduced.

The invention relates to the technical field of data processing, in particular to an intelligent financial contract approval management system and method, and the system comprises an obtaining part, an analysis part, a rule part, an evolution part, a learning part, and a decision part. The acquisition component captures an electronic contract document and analyzes the electronic contract document to generate a structured text sequence; the analysis component extracts entity features, condition features and behavior features through legal grammar dependency analysis to form a coupling vector; the rule component constructs a rule topology network and calculates a matching weight; the evolutionary component recombines the nodes to generate a new rule path when the matching weight is insufficient; the learning component executes hierarchical adversarial training on the new rule path to verify compliance; and the decision component decides an approval result based on the compliance confidence coefficient, and feeds back a manual recheck result to drive system optimization. According to the method, dynamic evolution and closed-loop feedback of the rule network are realized, complex logic branches of a contract are accurately identified, and the misjudgment defect of a predefined rule engine is eliminated.

The invention relates to the technical field of block chains, in particular to an electronic contract signing method based on a block chain and a related device, which are used for improving the security of electronic contract signing. The method comprises the following steps: a contract initiator encrypts a plaintext of a to-be-signed electronic contract by using a symmetric key to obtain a ciphertext of the to-be-signed electronic contract; and encrypting the symmetric key by using the respective public key of each contract signing party of the to-be-signed electronic contract, generating a key envelope list, calling the smart contract, and storing the ciphertext and the key envelope list to the block chain account. The contract signing party calls the smart contract, and obtains the ciphertext of the to-be-signed electronic contract in the blockchain account book and the key envelope of the contract signing party; decrypting the secret key envelope by using the private key to obtain a symmetric secret key; decrypting the ciphertext by using the symmetric key to obtain a plaintext; and generating a digital signature for the plaintext to obtain a signed electronic contract, calling an intelligent contract, and storing the signed electronic contract to a block chain account book.

The invention discloses an electronic contract signing verification method based on a trusted timestamp, and relates to the technical field of block chains and electronic contract signing, and the method comprises the steps: receiving a to-be-verified electronic contract signing file, and extracting a timestamp data block and signature data from the electronic contract signing file; sending the timestamp data block to a trusted timestamp service mechanism for verification, obtaining an evidence storage record corresponding to the electronic contract signing file from a block chain node, and extracting block chain evidence storage time and a contract hash value; and judging the signing time information of the timestamp data block and the blockchain evidence storage time of the evidence storage record, and when the time difference between the signing time information and the blockchain evidence storage time is smaller than a preset threshold and the contract hash value is matched with the contract file feature value, outputting a verification passing identifier. According to the invention, a dual verification system of the trusted timestamp service mechanism and the block chain distributed account book is constructed, so that the technical problem of insufficient verification reliability of a traditional single time source is effectively solved.

The invention relates to the technical field of electronic contract signing, in particular to an electronic contract signing method and system for video recording willingness authentication, and the method comprises the steps: associating a contract with signing party information through generating a unique task identifier, automatically triggering video recording in a signing link, and completing identity verification in advance; then multi-dimensional information including biological characteristics, willingness statement audio and a signing operation process is synchronously collected in the continuous recording process, finally, characteristic values of a recorded file and a contract file are calculated respectively, and the characteristic values, digital signatures and task identifiers are fused and stored in a tamper-proof mode. The real-time and strong association binding of the video evidence and the electronic contract on the data level is realized, the traceability, tampering prevention, completeness and credibility of the whole signing process are ensured, and the technical problems that in the prior art, the audio-visual evidence and the electronic contract are mutually independent, loose in association and easy to tamper, and a complete evidence chain with judicial proving power is difficult to form are effectively solved.

The invention provides a supplier management system, method and device and a medium, and belongs to the technical field of enterprise supply chain digital management, and the system comprises a multi-role collaborative management module which carries out the user role authority control management of suppliers, service providers, internal inspection departments, internal purchase operation departments and system administrators; the contract and order management module is used for receiving signed electronic contracts and generating hardware and software orders; the order acceptance module is used for receiving quality inspection results of hardware and software by an internal inspection department and outputting acceptance data; the dynamic evaluation module calculates scores of suppliers and service providers according to the acceptance data and historical acceptance data; the automatic payment module is used for paying the payment amount according to the scoring results of the suppliers and the service providers and the content of the electronic contract and updating the state of the contract; and the risk control list module is used for freezing the suppliers and the service providers which exceed the set times of low-score risk early warning. The supplier management process is optimized, the efficiency is improved, and the risk is reduced.

The invention discloses an apartment lease management system and method, and relates to the technical field of block chains, and the method comprises the steps: generating a facial feature vector through a ResNet-50 model, encrypting identity information and the facial feature vector through a ChaCha20-Poly1305 algorithm to generate encrypted identity data, and generating a credit point identifier and an initial credit point through an SHA-256 algorithm; processing the credit point identifier based on a joint learning framework to generate an anonymous credit query token, and protecting historical lease behavior data by using a differential privacy method; comparing the facial feature vector with the real-time facial feature vector through cosine similarity, and executing identity confirmation; and generating an electronic contract draft by using a Hyperledger Fabric network and a chain code. According to the method, a biological characteristic full-link protection system is constructed by fusing a ResNet-50 model and a ChaCha20-Poly1305 dynamic encryption mechanism.

The invention belongs to the technical field of supply chains, and provides a supply chain intelligent contract fulfillment method and device based on a block chain. The method comprises the steps of obtaining electronic contract data in a supply chain and a preset data verification mode, wherein the electronic contract data comprises a to-be-performed electronic contract, a contract ID and a first contract hash value; clause data are extracted from the electronic contract data, and a to-be-performed task is generated according to the clause data and the contract ID; generating a to-be-performed task smart contract in the block chain network according to the to-be-performed task and the data verification mode; and obtaining a performance confirmation message, executing the to-be-performed task through the to-be-performed task smart contract, and outputting a performance result. According to the invention, the performance condition of the electronic contract in the supply chain is automatically verified through the intelligent contract, the effectiveness of the performance execution result is ensured, and the verification efficiency of the performance result is improved.

The invention discloses an electronic contract encrypted storage method based on a national secret algorithm, and relates to the technical field of contract encrypted storage. Comprising the following steps: extracting a complexity feature vector based on a contract content structure, and calculating a slice granularity parameter according to the complexity feature vector; performing structure slicing processing on the target electronic contract data according to the slicing granularity parameter, and executing logic breakpoint segmentation in combination with a chain structure transfer node index in a contract to generate a contract slicing sequence; respectively generating slice metadata for the contract slice sequence, selecting a differentiated national cryptographic algorithm parameter group according to the complexity feature vector, and executing independent encryption on each contract slice; and binding and packaging the encrypted contract slices and the corresponding slice metadata into a slice archiving unit, and constructing an archiving index table according to the transfer node index and the paragraph path information. According to the invention, the structure identification capability, the encryption flexibility and the access controllability of the electronic contract in the encryption storage process are obviously improved.

The invention relates to a natural language processing technology, and discloses an electronic contract key information extraction method, system and device and a medium. The method comprises the following steps: performing a first round of keyword extraction on a contract text corresponding to an electronic contract through a preset large language model and a preset cue word to obtain a keyword text corresponding to the contract text; judging whether the keyword text meets a preset condition or not; the preset condition comprises a preset format and a preset field requirement; if the preset condition is met, obtaining a target keyword text corresponding to a keyword in the keyword text; and obtaining a text coordinate corresponding to the target keyword text in the contract text, and labeling the keyword text according to the text coordinate. According to the method, the preset large language model and the natural language processing technology are combined, the connection of electronic contract management and key information extraction can be dynamically enhanced, the extracted contract type is expanded, the early-stage model training cost and development cost are reduced, and the flexibility and expandability are improved.

The invention belongs to the field of data processing and financial science and technology, and relates to an electronic contract generation method and device, computer equipment and a storage medium, and the method comprises the steps: receiving a target contract type selected by a user from a contract type list if a contract generation request is received; receiving a target contract template selected by the user from the contract template list; contract content input by a user in the generated contract form page is received to generate a corresponding initial contract form; if the initial contract form passes the content verification, querying associated information corresponding to the initial contract form based on an information interface; integrating the associated information into the initial contract form to obtain a contract form; contract auditing processing is carried out on the contract form, and a target contract form passing the auditing is obtained; and generating a target electronic contract based on the target contract form. In addition, the target electronic contract may be stored in the block chain. The processing efficiency of contract generation is improved, and the data accuracy of the generated target electronic contract is ensured.

The invention provides an intelligent electronic contract auditing and risk early warning method based on AI, and belongs to the field of contract auditing, and the method comprises the following steps: building a standard database for contract auditing, carrying out the pre-classification of contract types, selecting one contract from contracts of the same type as a standard template, and carrying out the risk early warning of the contracts; the standard templates are imported into a standard database to serve as templates, and each input standard template is classified and marked; a general auditing process and an independent auditing process are set for each type of contract, the general auditing process is used for comparing and verifying each preset item in the standard template with the contract signed by adopting the standard template, and target marking is carried out on distinguishing points in the general auditing process; wherein in the independent auditing process, terms added in a standard template are subjected to cross auditing, similar contracts of the same kind are selected through classification marking, and the whole contract is traversed to select similar terms for comparison auditing.

The invention relates to the technical field of digital data processing, in particular to a docking insurance business full-process management method and device, and the method comprises the steps: collecting customer personal information and vehicle insurance demand information; determining a first risk level of the customer based on the personal information and a rule matching model; matching an insurance product according to the first risk level and insurance demand information; generating a corresponding electronic contract after the insurance product is matched, and enabling the customer to pay and confirm; after the contract is signed, historical driving data of the customer is continuously obtained, and a second risk level is judged based on the historical driving data after the insurance policy renewal time is up; adjusting the renewal amount based on the second risk level to obtain an adjusted insurance policy; and sending the adjustment insurance policy to the client. Therefore, risk assessment and price assessment can be better carried out based on more accurate customer data, and the working efficiency is improved.

The invention relates to the technical field of data processing, and particularly discloses a consistency comparison method and system for multi-modal electronic signed files, and the method comprises the following steps: S1, carrying out the multi-dimensional Hash calculation of a to-be-compared file, and generating a comprehensive Hash consistency score; s2, judging whether the comprehensive hash consistency score reaches a preset threshold value or not: if yes, judging that the comparison files are consistent; if not, cross-modal conjoint analysis is carried out on the text, the image and the structured content of the comparison file through a multi-modal deep learning model, and a consistency prediction score is generated; s3, judging whether the comparison files are consistent or not according to the consistency prediction score and a preset threshold value, and generating a judgment result; by comprehensively applying multi-dimensional hash code analysis and combining and using multi-modal model comparison and covering data of different formats and types, subtle changes of various contents such as texts, images and tables can be detected, so that the high efficiency and accuracy of the electronic signed file are improved.

To eliminate the necessity of another conclusion of an electronic contract which includes an error, the electronic contract having been concluded between a plurality of users in an electronic contract procedure.SOLUTION: In a computer equipped with a processor and a storage unit, a program that provides a service related to a contract document which is to be concluded between parties concerned causes the processor to execute: a contract storage step of storing a contract document related to a contract concluded between a plurality of users; a correction receiving step of receiving a correction operation on the content of contract in the contract document stored in the contract storage step; and a signing step of storing the content of correction related to the content of the correction operation received in the correction receiving step, with an electronic signature affixed thereto, in association with the contract document.SELECTED DRAWING: Figure 19

To enable an information terminal device in an LGWAN (Local Government Wide Area Network) to receive an electronic file transmitted from the outside of the LGWAN without damaging the originality of the electronic file.SOLUTION: A harmless relay server 200 is a relay device for connecting an LGWAN and an external network, a communication part 210 transmits an originality confirmation request to an electronic contract server 100 in the case of receiving a download request to instruct a PDF file to be stored in the electronic contract server 100 from an information terminal device 300, an originality confirmation part 131 of the electronic contract server 100 confirms the originality of the PDF file in response to the originality confirmation request received from the harmless relay server 200, a communication part 110 transmits a confirmation result and the PDF file to the harmless relay server 200, and a harmless rendering part 232 of the harmless relay server 200 renders the PDF file received from the electronic contract server 100 harmless in the case of receiving a confirmation result that the originality can be confirmed.SELECTED DRAWING: Figure 1

The invention discloses an electronic contract signature verification system based on a built-in intelligent auditing algorithm, relates to the technical field of artificial intelligence, and solves the problems that an existing electronic contract signature verification system is lack of an effective means to verify the identity of an owner of an electronic contract, an electronic seal cannot be prevented from being used in an unauthorized manner, and the verification efficiency is high. And the content of the electronic contract file cannot be completely ensured not to be tampered after being signed. The electronic contract signature verification system comprises an intelligent identification module, an electronic contract management module, a data storage supervision module, an electronic seal management module, an intelligent contract signature verification module and a verification test module. Identifying a seal signature image of the electronic seal and extracting key contract data of the electronic contract through a multi-modal segmentation model; performing hash operation on the electronic contract through the data storage supervision module to obtain an original hash value; the accuracy of the contract signature verification result is detected and evaluated through the evaluation test model, and the anomaly positioning algorithm is optimized according to the accuracy detection and evaluation result, so that electronic contract signature verification is completed; the authorization security of the electronic seal is improved, and the content of the electronic contract file is prevented from being tampered after being signed.

The invention relates to the technical field of enterprise data security exchange, and particularly discloses a data space system and a connector assembly and a data circulation method thereof. The system comprises: a data space platform providing enterprise registration, purchase and registration of a connector assembly, issuing and transaction functions of a data product, and issuing a signed electronic transaction contract; the at least two connector assemblies are deployed in the corresponding enterprise intranet and have public network access addresses, and the zero-trust gateway controls the access permission granularity of a network port of the deployment equipment based on a dynamic strategy; the network agent module receives a data request of a user, performs asymmetric encryption processing on request data, and initiates a validity verification request to the connector service module through the Socket communication interface; the connector service module performs validity verification on the validity verification request based on the transaction evidence and the electronic contract information and returns a result; the method has the advantages of solving the data island phenomenon, improving the safety protection capability and reducing the deployment operation and maintenance complexity.

The invention relates to the technical field of electronic contracts, and discloses an electronic contract rapid generation management method, which comprises the steps of receiving contract request information input by a target user; determining a target contract type, and extracting target contract content; obtaining a target contract template; generating an initial electronic contract text; forming first adjustment data through a first adjustment judgment strategy; adjusting the initial electronic contract text to form an adjusted electronic contract text; forming second adjustment data through a second adjustment judgment strategy; adjusting the electronic contract text to form a to-be-signed electronic contract text; obtaining signing data; and forming a final electronic contract text. According to the electronic contract rapid generation management method, the contract template can be selected, the initial electronic contract can be generated, when the filled content and the contract information label of the initial electronic contract are staggered, the position of the filled content can be automatically changed, and the accuracy of automatic generation of the electronic contract is improved.

The invention discloses a file processing method and device and electronic equipment. The method comprises the following steps: receiving target file information sent by a first user through a first user side; under the condition that both the first character string and the first verification data are correct, sending the first character string to a second user side; receiving a verification file sent by a second user through a second user side, and identifying the verification file according to the second user information and the second verification data to obtain an identification result; under the condition that the identification result is correct, sending the to-be-signed file and the first character string to a second user side, and receiving feedback information sent by the second user side; and under the condition that the signed file is not abnormal, storing the signed file in a database. According to the method and the device, the problem of relatively low security of encrypted transmission of the electronic contract by setting a password in the related technology is solved.

The invention discloses a PDF signature method and system for preventing seal copying, and belongs to the technical field of electronic document security, and the method comprises the steps: obtaining an original electronic contract, and configuring signature domain metadata of the original electronic contract, the signature domain metadata comprising a signature sequence, signature party information, signature domain information and electronic seal pictures of all signature parties; performing transparency processing on each electronic seal picture, embedding each electronic seal picture subjected to transparency processing into a corresponding position of the original electronic contract according to the signature domain information, and generating a pre-sealed electronic contract; and based on the signing sequence, sequentially delivering the pre-sealed electronic contract to each signing party through a chain type signing mechanism for digital signature, and finally outputting a target contract containing a complete signature chain. According to the application, the seal can be effectively prevented from being moved or copied in the preview software of the macOS system, the legal potency and security of the electronic document can be maintained, and the confidence of the user on the electronic signature system can be enhanced.

The invention discloses an electronic contract signing and order settlement integrated platform in a zero-work system, and relates to the technical field of electronic contract signing, and the technical scheme is characterized in that the method comprises the steps: obtaining the current task publishing information and historical task data information of a task publisher; performing training processing on historical task condition information and zero worker state information in the historical task data information to obtain a task matching model I; performing training processing on historical task element trends in the historical task data information to feature change trends to obtain a second task matching model; task condition information in the current task release information is input into a task matching model I to predict and obtain a dispatch prediction result I, and task elements in the current task release information are input into a task matching model II to predict and obtain a dispatch prediction result II; the method has the advantages that integration of electronic contract signing and order settlement is achieved, and one-stop service experience is provided for workers and task publishers.

The invention provides an electronic contract multi-identity authentication method and device of a mobile terminal, equipment and a medium, and the method comprises the steps: determining whether to transmit an identity verification code to user equipment according to the response identity data and response behavior data of the user equipment to first identity authentication information; determining whether the user equipment passes the first identity authentication according to the input behavior data when the user equipment inputs the identity verification code; determining whether the user equipment passes the second identity authentication or not according to a real-time response behavior made by the user equipment for the second identity authentication information and the waiting response duration; determining whether the user equipment passes the third identity authentication according to a video frame sequence of the user equipment corresponding to the third identity authentication information and a shooting waiting time length; and if the user equipment passes the third identity authentication, determining that the multiple identity authentication of the user equipment is successful, and displaying an electronic contract to the user equipment. Therefore, the problems of false use and signing-for-another of the electronic contract are effectively avoided.

The present application provides an electronic contract signing method, system, terminal device and readable storage medium. The method includes: receiving a first target personal private key selected by a first user, where the first user is a member of a first enterprise; signing the original contract according to the first target personal private key to obtain a first stamped contract, where the first stamped contract includes the original contract and the corresponding first digital signature; encrypting the first stamped contract according to a second contract key of a second enterprise to obtain a first encrypted contract; and sending the first encrypted contract and the corresponding first enterprise certificate to the second enterprise system. The present application can enter the information of the person stamping the contract in the contract, providing a basis for subsequent search for the information of the person stamping the contract; it can also achieve that while the enterprise is displayed externally, the counterparty of the contract can also verify the digital signature, enabling the counterparty of the contract to verify the digital signature through the first certificate without being able to obtain the information of the person stamping the contract, improving information confidentiality.

The invention discloses an online contract signing method and system based on a smart contract. The method comprises the steps that a contract initiator generates an electronic contract, signs the electronic contract, submits the electronic contract to an intelligent contract, and stores submitted information after the intelligent contract verifies the identity of a submitter. And the signing party verifies the electronic contract which is checked to be correct from the smart contract, and submits the signed electronic contract to the smart contract. And the contract initiator and the contract signing party perform signature verification on the latest electronic contract in the smart contract, after the signature verification is passed, a character signature and a corresponding electronic signature are added to the electronic contract, and the signature is submitted to the smart contract. And after the contract initiator verifies the latest electronic contract in the intelligent contract, determining that the signing of the online contract is completed. Therefore, the contract signing process is simplified, and convenience and rapidness are achieved; the electronic contract is signed and verified for many times, so that the data is reliable and safe. The electronic contract signing process data is stored in the intelligent contract, so that the electronic contract can be prevented from being artificially modified, and traceability is facilitated.

This application discloses an online contract signing method and system based on smart contracts. The method includes: the contract initiator generating and signing an electronic contract, submitting it to a smart contract, and saving the submission information after the smart contract verifies the submitter's identity. The signatory verifies the electronic contract, which is found to be correct in the smart contract, and submits it to the smart contract after signing. The contract initiator and the signatory sequentially verify the latest electronic contract in the smart contract. After successful verification, they add a text signature and corresponding electronic seal to the electronic contract, sign it, and submit it to the smart contract. Once the contract initiator verifies the latest electronic contract in the smart contract, the online contract signing is confirmed as complete. This simplifies the contract signing process, making it convenient and fast; multiple signatures and verifications of the electronic contract ensure data reliability and security. The electronic contract signing process data is stored in the smart contract, preventing unauthorized modification of the electronic contract and facilitating traceability.