61results about How to "Real-time grasp" patented technology

The invention discloses a medical clinical quality monitoring and evaluation system based on a single-disease model, and relates to the field of medical quality management. The system comprises a clinical data integration subsystem, a data cleaning and standardization subsystem, a statistic analysis and evaluation algorithm subsystem and a clinical quality management application subsystem. The clinical data integration subsystem is used for sending collected case data in the original diagnosis and treatment process of single diseases into a clinical record database; the data cleaning and standardization subsystem is used for selecting case data from the clinical record database and processing the data to form a single-disease evaluation database; the statistic analysis and evaluation algorithm subsystem is used for performing index calculation and comprehensive evaluation calculation on the received data; the clinical quality management application subsystem is used for displaying a comprehensive evaluation result obtained after the statistic analysis and evaluation algorithm subsystem performs calculation. Through the system, processing and statistic evaluation of the clinical data in clinical quality management are achieved, and a medical quality manager can truly and objectively master the quality of the diagnosis and treatment process of various diseases in various clinical departments in real time in a full-quantized mode.

The invention discloses a real-time intelligent fuel system for a water transport coal-fired power plant. The hardware equipment of the system includes a bucket wheel stacker-reclaimer automatic control system, a real-time coal check system, a coal temperature detecting device, a server, and the like; the hardware equipment of the system includes a system platform, an intelligent coal blending combustion system, a fuel intelligent dispatching management system, a fuel intelligent operation management system, a boiler real-time operation management system, a data analysis system and the like. Under the framework of an intelligent power plant, the data gaps of the whole process of fuel management are bridged through the fully automatic bucket wheel capable of accurate three-dimension positioning; intelligent coal stacking and in-boiler coal intelligent blending and combustion are realized through a combustion characteristic prediction-based intelligent coal blending technology; the automatic correlation of the types and quality of coal which is combusted real time in a boiler can be realized through a coal bunker intelligent layering technology; and an automatic coal blending technology, a plurality of metering devices used in a whole process, and an in-boiler coal type-based sampling technology are adopted to realize the intelligent balanced analysis of the coal quantity and coal quality in the whole process of fuel management.

The invention provides a vehicle remote anti-theft system which comprises a positioning module, a CAN (Controller Area Network) bus anti-theft module, a processing module, a storage module, an oil and power control module, a disassembly prevention module and a communication module. The positioning module is used for providing locating information of a vehicle; the CAN bus anti-theft module is used for providing state information of the vehicle; the processing module is used for collecting the state information and the locating information of the vehicle and feeding back the locating information and the state information of the vehicle to a control center; the storage module is used for storing information of the processing module; the oil and power control module is used for controlling an oil circuit and an electric circuit of the vehicle; the disassembly prevention module is used for controlling the oil and power control module to cut off the oil circuit and the electric circuit of the vehicle when an abnormal condition of the processing module occurs; the communication module is used for establishing connection between the processing module and the control centre; the processing module is also used for monitoring the states of the positioning module, the CAN bus anti-theft module, the storage module, the oil and power control module, the disassembly prevention module and the communication module; and abnormal information is sent to the control center through the communication module when an abnormal condition occurs. The vehicle remote anti-theft system has the advantages of being capable of being remotely operated and safe, convenient and rapid.

The invention provides an online unmanned helicopter monitoring system. The system comprises an airborne communication?device, a ground communication?control device, a sensor, a collector?and?an analyzer. According to the main working principle, the sensor sends original?sensing signals to the collector; the collector converts the sensing signals into electrical signals and sends the electrical signals to the analyzer; and the analyzer carries out calculation via a rapid?analysis formula to obtain a result, compares the result with a preset limit value and judges whether the result needs to be sent to the ground communication?control device via the airborne communication?device. According to the online monitoring system, the flight state of the unmanned helicopter can be mastered in real time by a ground operator, great convenience is brought to maintenance of the helicopter, a special?data?analysis way enables state information of the parts to be extracted from the background noise, the needed information is sent to the ground operator to determine the safety performances and the continuous airworthiness?ability of the unmanned helicopter according to the set procedures.

The present invention provides an asset operation and maintenance spot inspection method applicable to a number of assets and warehouse spare parts of a large company based on an asset operation and maintenance spot inspection system with the combination of RFID and the two-dimensional technology. Through a comprehensive asset management function, the processes of equipment entry, inventory and delivery, and asset adding, allocation, idle, discard, maintenance and the like are subjected to information management, the asset information integrated control is achieved, thus an accurate reference data is provided for enterprise investment decisions and asset reasonable allocation, the investment marginal benefit is effectively increased, the asset utilization is raised, and the unnecessary equipment investment and idle waste are reduced.

The invention discloses an electric charge diagnosis system and method. The electric charge diagnosis system comprises a system parameter setting module, an electric charge simulation trial module, an abnormal electricity utilization inquiring module, an abnormal electricity utilization automatic notice module and an electricity utilization data statistical analysis module. The electric charge diagnosis method comprises the following steps: calculating the optimum contractual capacity by utilizing collected historical electricity utilization information and historical electricity consumption data; providing the optimum electric charge, and comparing with the historical electricity utilization charge; furthermore, estimating an optimum electricity utilization scheme, and then applying for regulating electricity utilization contractual capacity from an electric power company, thereby reaching the aim of saving electric charge expenditure; and meanwhile, utilizing abnormal electricity utilization inquiring module to analyze the abnormal electric charge, and noticing corresponding brief news receiving group personnel, thus the abnormal electricity utilization information can be grasped in real time.

The invention discloses a map-based ground taxing guidance system. The system comprises an airport database module used for storing terrain conditions of an airport and spatial layout information of all components of the airport, an aircraft position acquisition module used for acquiring position information of an aircraft and other aircrafts on the airport, a taxing instruction receiving module used for receiving a taxing instruction issued by the airport, an airport dynamic map generating module used for dynamically generating a real-time map of the airport according to the information of the airport database module and the aircraft position acquisition module and generating a predicted taxing path on the real-time map of the airport according to the taxing instruction received by the taxing instruction receiving module, and a display module used for displaying the real-time map of the airport and the predicted taxing path formed by the airport dynamic map generating module.

The invention discloses a swimming pool anti-drowning early warning system based on computer vision. The system comprises the following steps of S1, collecting the motion data of a swimming pool person through a high-definition camera, and transmitting a collected video data stream to a common-performance host through an rtsp protocol, S2, converting each frame of video image into an RGB image, and preprocessing the obtained image by using an image distortion algorithm, and S3, carrying out target detection on the swimmer in the video image by using a pre-trained Yolov3 model. According to theswimming pool anti-drowning early warning system based on computer vision, full-coverage monitoring is conducted on the swimming pool through the camera, the system automatically recognizes swimmersin the swimming pool through the target detection technology based on deep learning, and wearable devices such as bracelets are not needed any more; coordinates of skeleton key points of a human bodyare recognized by utilizing a human body skeleton posture recognition algorithm based on deep learning to judge the posture of the human body, so that the situation that the human body stands in a swimming pool is eliminated, and the system false alarm rate is reduced.

The invention discloses an information push method. The information push method comprises the following steps: receiving a first hypertext transfer protocol (HTTP) GET message sent by a client in a network, and recording information of the first HTTP GET message; when the information of the first HTTP GET message conforms to a push condition, sending an HTTP push message to the client; and when an HTTP feedback message sent by the client is received, determining that push succeeds, wherein the HTTP feedback message is based on the control of the HTTP push message. Meanwhile, the invention also discloses an information push optimization method, an information push server, an information push optimization server, an information push system and an information push optimization system.

The invention discloses a network repairing management system of multimedia teaching equipment. On the basis of the web technology and the traditional repairing process, the system analyzes the management requirements of the entire repairing process and sets a repairing management module, a maintenance process inquiry module, a maintenance feedback management module, and a reservation management module. Meanwhile, the invention also discloses a network repairing management method of multimedia teaching equipment. Therefore, the repairing time is saved; and the repairing flow is simplified. Because of the historical fault record in the system, the maintenance of the equipment becomes convenient. The functions are perfect; the efficiency of personnel and equipment management is high; the method is implemented conveniently and efficiently; the automation level is high; the work load needing manual participation is reduced obviously; and the teaching can be carried out successfully and efficiently.

The invention discloses a wind power comprehensive lightning protection monitoring method, and solves the problem that a lightning protection detection method in the current wind power field cannot accurately master the lightning stroke time, the number of times and the amplitude of a wind driven generator in real time, and cannot efficiently carry out fault early warning. The wind power comprehensive lightning protection monitoring method comprises the following steps of S1, performing initialization and parameter setting on a site, equipment, network information, touch screen calibration, alightning current acquisition module, an SPD unit module, a grounding resistance module and a connection resistance module of lightning monitoring equipment by using central controller configuration software; S2, according to various parameters set in step S1, consecutively collecting lightning current information when blades, a cabin and a tower foundation of the wind driven generator are subjected to lightning stroke, cabin and tower foundation SPD state information of the wind driven generator, and values of a cabin carbon brush connection resistor and a tower foundation grounding resistor;and S3, according to the step S2, carrying out reading or transmitting by accessing a fan control system, a remote monitoring platform or a local connection terminal, and monitoring and analyzing various measured values and carrying out early warning.

The invention discloses a construction site personnel positioning system based on a WSN and belongs to the monitoring technology field. The system comprises a monitoring server host, a client computer, anchor nodes, a moving node, a GIS system, a positioning software platform system and a construction personnel positioning APP software system. The anchor nodes are arranged in a construction site and each anchor node comprises a positioning module and a communication module. Moving node equipment is worn by a construction person. Personal basic information is arranged in the moving node. The anchor nodes and the moving node form bidirectional communication. The positioning module collects moving node information according to a preset time interval. The monitoring server host is connected toeach anchor node and the moving node. The client computer is used for inputting basic data, and inquiring and displaying collected moving node data. In the invention, the WSN is used to position theconstruction person in real time. On a computer terminal and a mobile phone terminal, construction site personnel positioning can be checked in real time so that management efficiency is greatly increased.

The invention relates to an indoor decoration construction scene monitoring system based on three-dimensional modeling. According to the system, three-dimensional point cloud scanning of decoration construction scenes with problems can be performed, three-dimensional point cloud data of the construction scenes with the problems are acquired, three-dimensional modeling and real scenes are reconstructed by a three-dimensional modeling unit based on a reverse three-dimensional modeling technique, three-dimensional data analysis of a three-dimensional module is performed by a remote monitoring platform, relevant morphology information of the construction scenes with the problems is acquired, the relevant morphology information and original design model parameters are compared and analyzed, anda remote instruction module feeds back a final problem solution to a mobile terminal used by an on-site construction personnel through a cloud server. According to the system, real scene modeling transmission of decoration construction scenes can be achieved, construction problems in the decoration construction scenes are conveniently and visually known by designers and project managers in real time, solutions of the construction problems can be timely given, and construction quality is ensured.

The invention discloses a seal for the internet of things and a management system. The seal comprises a seal body and a seal handle extending to the seal body. The seal body is located in a seal end cap, a non-through groove is formed in the seal handle, the side face of the seal body is provided with a locking groove communicated with the groove, a motor is arranged in the groove and connected with a motor shaft, gear teeth are arranged on the motor shaft, a locking rod is disposed in the locking groove and meshed with the motor shaft through the gear teeth, and a locking hole is formed in the seal end cap. A plurality of springs are arranged above the motor and compressed on the motor through a seal handle cover. A fingerprint recognizer is arranged on the upper end face of the seal handle cover. The fingerprint recognizer is connected with a controller located on the lower end face of the seal handle cover. When the seal is used, a fingerprint is pressed on the seal, if information accords, the controller controls the motor to rotate forwards to drive the locking rod to rotate, accordingly the locking rod moves and retracts, the seal end cap is opened, the seal can be normally used, and safety is high.

The invention discloses an intelligent environmental sanitation cloud platform integrated management system. The system comprises a background management module, a personnel management module, a vehicle management module, an equipment management module, a patrol management module and an intelligent garbage collection and transportation module, wherein the personnel management module monitors operation of cleaning personnel in real time; the vehicle management module conducts data collection on vehicle information of a vehicle equipped with the vehicle-mounted terminal; the equipment managementmodule manages the environmental sanitation equipment in an information-based manner; the patrol management module manages inspection information of the supervisor; the intelligent garbage collectionand transportation module manages garbage collection and transportation information; the background management module sorts out the above information. The system can realize the supervision of the environmental sanitation operation effect, the environmental sanitation operation vehicle, environmental sanitation equipment and sanitary environment and the whole-process monitoring, so that the environmental sanitation operation problem can be found and solved as soon as possible, and the management personnel can grasp the environmental sanitation operation situation comprehensively, real-timelyand transparently through the background management module.

The invention discloses an important event early warning method and system for urban grid management, and relates to the field of urban delicacy management. The important event early warning method comprises the steps that important events are defined; structural data is cleaned and integrated; records of the important events are screened; geographic position clustering is carried out on the important events; according to the geographic positions, ordinary events are supplemented; semantic analysis is carried out on each class of important events and ordinary events to extract similar cases; according to the screened data, feature conversion is carried out; an early warning model of the important event is established; a test set is inputted; the ordinary events are inputted; and early warning results are outputted. The important event early warning system comprises an input module, an important event early warning module and an output module. The important event early warning method and system for urban grid management can comprehensively and accurately master various risk dynamics in real time.

The invention discloses a maritime communication system based on integration of three networks, which is characterized by comprising an internet transmission part, a communication network transmissionpart and an IoT (Internet of Things) transmission part, wherein the internet transmission part comprises ashore terminal equipment, a data processing center and a data transceiving control storage center which are arranged ashore; the communication network transmission part comprises a satellite and a shortwave base station; and the IoT transmission part comprises shipborne terminal equipment andmonitoring and sensing equipment which are arranged on a ship. The invention further discloses a method for carrying out maritime communication by adopting the maritime communication system based onintegration of three networks. By adopting the technical scheme, the maritime communication system and communication method based on integration of three networks, which are disclosed by the invention, can greatly enrich communication modes and communication contents between the sea and the shore, and not only implement interconnection between the shore and the ship, but also can enable a user ashore to master various conditions on the ship in real time in detail, such as production and living conditions of seamen and a safety condition of marine products in a fish hold.

The invention provides a remote inventorying method for network equipment. The method comprises the following steps that an inventorying platform sends an inventorying request to a network group working platform; the network group working platform acquires corresponding software version information of each switch according to the inventorying request, generates a corresponding equipment information grabbing instruction of each switch according to the software version information, and transmits to a switch management server; the switch management server acquires log information of a corresponding switch according to the inventorying request; the inventorying platform compares the log information with pre-stored switch information and part information to generate an inventorying result. The embodiment of the invention has the advantages of remote and automatic inventorying, labor force is reduced, cost is saved, and accurate inventorying is realized. The invention further provides a remote inventorying system for the network equipment, an inventorying platform and a switch management server.

The invention provides a patient consciousness disturbance degree monitoring and early warning system and method. The method comprises the steps that through the contact between electro encephalography electrodes and the human body, the electro encephalography signals of the human body are collected and subjected to filtering processing and digital processing respectively to obtain monitoring data; the monitoring data is saved, the saved monitoring data is read, and the monitoring data is subjected to analytical processing to obtain various data quantized values; an early warning threshold is set, and an alarm is started when the data quantized values exceed the early warning threshold. The patient consciousness disturbance degree monitoring and early warning system and method have the advantages that through continuous electro encephalography signal monitoring and the quantitative analysis indexes of an energy spectrum and nonlinear dynamics, medical staff can know the changes of the patient consciousness disturbance degree in real time for a long time, the defects of a traditional medical consciousness disturbance degree assessment scale is made up for, and long-term and continuous monitoring and early warning for a patient with consciousness disturbance are emphasized so that the medical staff can adjust the therapeutic schedule according to the changes of the patient consciousness disturbance degree in time, thereby truly improving the condition of the patient.

The invention provides a crop drought loss assessment system based on remote sensing data and a crop drought loss assessment method based on the remote sensing data. The system comprises a crop drought data calculation module which is used for calculating the crop distribution data, the crop planting area and the crop drought area; a crop growth condition monitoring indicator calculation module which is used for calculating the crop growth condition monitoring indicators based on the crop distribution data; a crop loss assessment module which is used for calculating the crop loss according tothe crop planting area, the crop drought area and the crop growth condition monitoring indicators; a drought affected population calculation module which is used for calculating the drought affected population according to the total population of the monitoring region, the crop planting area and the crop drought area; and a loss database establishing module which is used for establishing a loss database according to the crop loss and the drought affected population. According to the system and the method, the degree of the drought loss can be accurately and comprehensively mastered in real time.

A railway non-interlocking train receiving and dispatching route confirmation system is disclosed. The invention solves the problem that the train receiving and dispatching operation can only depend on personnel to confirm a route when interlocking equipment in the existing railway operation is stopped, and belongs to the field of railway route confirmation. The railway non-interlocking train receiving and dispatching route confirmation system comprises turnout labels, an intelligent hook lock device and a route confirmation terminal, wherein the inner side surfaces of a positioning guide railand a reverse guide rail of each turnout are respectively provided with a turnout label for marking the turnout as positioning or reverse and the current number of a station track; the intelligent hook lock device comprises a reading device, a single chip microcomputer and a hook lock device, wherein the reading device and the single chip microcomputer are fixed on the hook lock device; the reading device corresponds to the turnout label position on the positioning guide rail or the reversed guide rail; when a road switch operator uses the hook lock device to complete turnout locking, the reading device reads the mark information in the turnout labels in the range; the single chip microcomputer is used for identifying the mark information, judging whether the turnout is in a positioning or reverse position state and sending the result to a route confirmation terminal; and the route confirmation terminal is used for displaying the train route in a white light band form according to thestate of each turnout.

The invention provides an unattended transformer substation integrated monitoring system, and belongs to the field of electric technologies and equipment. According to the technical scheme, the system is composed of a center management server, a disk array, a large screen, network transmission equipment and 3G gateway equipment. Videos and monitoring data of transformer substations are collected and encoded through equipment at the front ends of the transformer substations, and the encoded data are transmitted to the center management server through a fiber optical transceiver and a network switch of the network transmission equipment for monitoring, storage, forwarding control and management. The large screen is used for displaying high-definition monitoring images. The disk array is mainly used for storing video stream data. The 3G gateway equipment is used for transmitting warning signals to a designated mobile phone terminal through a 3G network. The unattended transformer substation integrated monitoring system has the advantages that the transformer substations can be monitored and supervised, situations can be conveniently and directly grasped in real time, response can be made in time, and the system is advanced in design, practical in technology, efficient in operation, easy and convenient to maintain, and safe and reliable.

The invention discloses a GPRS-based urban wireless remote gas gate station monitoring system comprising a processing center, a data acquisition system, a monitoring system and a login authority setting module, wherein the output end of the data acquisition system is connected to the input end of a data processing module, the output end of the data processing module is connected to the input end of the processing center, the output end of the monitoring system is connected to the input end of the processing center, and the output end of the login authority setting module is connected to the input end of the processing center. The invention relates to the technical field of natural gas gate station monitoring system. The GPRS-based urban wireless remote transmission natural gas gate stationmonitoring system and method enable the operator of the gate station to grasp the working conditions of the station in real time and comprehensively, foresee and prevent the occurrence of productionaccidents more quickly, and at the same time, provide data decision basis for the optimal management of natural gas gate stations by comprehensively analyzing the production data, so that management is more scientific and production and operation plans are more reasonable.

The invention discloses a video image relay playing method, system and device. The video image relay playing method comprises the steps of acquiring video image data in rotation of first video equipment; positioning and recognizing an object appeared in the video image data according to an azimuth angle of the rotation and a pre-established three-dimensional coordinate system, wherein the three-dimensional coordinate system is established in a mode of collecting image data of the first video equipment within a field-of-view range of 360 degrees at a reference position and taking the first video equipment as a center; and when a concerned target object is judged to appear in the video images, acquiring and playing video images of second video equipment within a specified range around the concerned target object. According to the invention, relay playing of the video images can be realized quickly and effectively, so that the continuity and non-interruption of the video images are ensured, and the target object is effectively tracked.

The invention relates to a coal mine excavation equipment data analysis and early warning method. Aiming at the problems that the current coal mine excavation equipment is single in operation state data and cannot be effectively integrated according to the equipment type, a data system with universality and expandability is established through a wired transmission mode in the equipment and a wireless transmission mode between the equipment, selection and configuration can be carried out according to the current equipment type, meanwhile, the operation state of the equipment is displayed in various modes such as data and three-dimensional animation, operators and production designers can master equipment information in real time, the number of workers on a working face is effectively reduced, and the intelligent level of the equipment is improved.

The invention discloses a dredging device of a water conservancy project pipeline. The dredging device of the water conservancy project pipeline includes a supporting pillar, a pair of bodies, a plurality of walking assemblies, a first layer dredging assembly, a second layer dredging assembly, and a third layer dredging assembly, wherein the supporting pillar is arranged horizontally, the bodies are arranged on the supporting pillar, and the walking assemblies are correspondingly arranged on the bodies; and the first layer dredging assembly and the third layer dredging assembly are correspondingly arranged at the two ends of the supporting pillar, and the second layer dredging assembly is located between the first layer dredging assembly and the third layer dredging assembly. The dredgingdevice of the water conservancy project pipeline is simple in structure, users can grasp the situation inside the pipeline in real time, the dredging efficiency is high, using capacity is high, and operation is easy.

The invention discloses an environmental data acquisition monitoring device for digital agriculture, and relates to the field of digital agriculture. The environmental data acquisition monitoring device comprises a device body, the device body is provided with a monitoring camera and a display screen, the display screen is movably provided with a protective cover, glass is fixedly installed in the protective cover, the protective cover is internally provided with a brush rod, a plurality of bristles are fixedly installed on the brush rod and make contact with the glass, and an installation box is fixedly installed on the bottom side of the protection cover. According to the invention, through the arrangement of the protective cover and the glass, the display screen can be effectively protected, so that the problem that the display screen is damaged due to accidental impact can be avoided, the normal use of the display screen is ensured, and meanwhile, the monitoring camera can be protected through the external shell; and the fan arranged in the external shell can discharge the hot air flow through the air holes to actively cool the monitoring camera, so the monitoring camera can still be normally used even under the exposure of the sun in summer.

The invention relates to the technical field of fire alarm equipment, in particular to a fire alarm device for a communication base station. The fire alarm device comprises a power device, an MCU control module, a detection unit, an alarm unit, an open circuit protection unit, an image acquisition unit, a wireless communication unit, a warning light unit and a fire extinguishing unit, wherein thepower device is in energization connection with the MCU control module, and the MCU control module is in energization connection with the detection unit, the alarm unit, the open circuit protection unit, the image acquisition unit, the wireless communication unit, the warning light unit and the fire extinguishing unit. The fire alarm device is simple in structure and is easy to install and disassemble; and remote monitoring equipment is arranged, a fire condition in the base station can be monitored in real time, the corresponding processing is targetedly made, the fire alarm device has a remote warning function, a fire fighter is convenient to understand fire information within first time, meanwhile, the fire alarm device has functions of open circuit protection and fire extinguishing, the safety of the equipment is greatly protected, and the economic loss caused by fire of the equipment is reduced.

The invention discloses a mobile terminal, and a method for detecting an air index through the mobile terminal. The mobile terminal comprises: at least one infrared emitter used for emitting infrared lights; at least one infrared receiver used for receiving the infrared lights, wherein a preset angle exists between the at least one infrared receiver and the at least one infrared emitter; and a controller, wherein the controller is connected with the at least one infrared emitter and the at least one infrared receiver, and is used for obtaining the current air index according to the intensity of the infrared lights received by the at least one infrared receiver. The at least one infrared emitter and the at least one infrared receiver are arranged in a shell, and the preset angle exists between the at least one infrared receiver and the at least one infrared emitter, so the mobile terminal can realize detection of the air index without a compressor; and a user can detect the air index anytime and anywhere to conveniently know the current air index, so the user can know the surrounding air quality in real time.

The invention discloses an electric power data analysis method and system based on data fusion, and relates to the technical field of electric power data analysis, and the method comprises the steps: automatically obtaining electric power regulation and control multi-dimensional data in a plurality of systems, carrying out the data fusion, judging whether abnormal data exists or not according to the fused data, and if yes, carrying out the data fusion. According to the method and the system, abnormal data are acquired, fault causes and fault points of the power system are positioned according to the abnormal data, the fault influence equipment number, fault influence time, landform, line importance degree, weather data and load data are utilized, the trained BP neural network model is combined to judge the risk level of faults, multi-system data do not need to be integrated and analyzed manually, and the method and the system are convenient to operate. The automation degree of data analysis of the power equipment is improved, and the technical problems that when the operation condition of the power equipment is analyzed at present, data needs to be retrieved from multiple systems manually, then data integration and analysis are performed, the efficiency is low, and power data abnormity is difficult to find in time are solved.