31results about How to "Meet diversity" patented technology

The application discloses a modular building unit structure and a modular building. The modular building unit structure comprises four cuboid building frame units, a supporting column movably connected between one straight angle end of each of the building frame units, the four building frame units distributed on the same plane, and the straight angle ends of the building frame units provided with the supporting column gathered and fixedly connected with each other, and the supporting column movable to approach or move away from the straight angle end of the building frame unit. The modular building unit structure and the modular building can remove the supporting column at the intersection of the four building frame units, so that the independent spaces in the four building frame units are connected to form a large space, the reconstruction of a large-span space can be realized on site, the reconstruction mode is simple and convenient, and the reconstruction mode can be adapted to various application scenarios.

The utility model provides a sound box with decoration function, include: cat type shell, sound box body, LED lamp module, tail bluetooth microphone module, speech interaction module, power module, among them, cat type shell is made of soft material, whole structure is cat moulding, cat type shell is equipped with tail interface groove, is used for inserting tail bluetooth microphone module. The sound box body is arranged in the torso area of the cat type shell, the surface is equipped with loudspeaker sound hole, the LED lamp module is located in the cat head upper position for changing color with music rhythm, the tail bluetooth microphone module is the pluggable structure, is independent microphone after pulling out, the tail end is equipped with microphone pickup hole, inserts the tail interface groove, the speech interaction module built -in speech recognition and audio output chip, the power module is used for power supply for above -mentioned each function module. Through adopting the design of cat type shell, gives the sound box unique visual modelling, promotes its as home decoration value.

This application discloses a method, apparatus, device, and medium for item recommendation across multiple user groups, scenarios, and tasks, relating to the field of artificial intelligence technology. The method involves acquiring user-side information, item-side information, and corresponding scene environment information in different scenarios; calculating weight dimensions, shared feature vectors, and environment dimensions to obtain a first dimension, a dense vector, and a second dimension; performing attention mechanism feature cross-calculation to obtain a third dimension; calculating item recommendation scores using the first dimension, dense vector, second dimension, and third dimension to obtain an item recommendation value; determining the target item recommendation value; identifying the target item information corresponding to the item recommendation value; and recommending the target item information to the user. This application can construct a three-dimensional perspective model encompassing multiple scenarios, user groups, and tasks, thereby improving the ability to represent differentiated user groups, meeting diverse user needs, and achieving comprehensive item recommendation across multiple user groups, scenarios, and tasks.

The invention provides a head and face wearable adjustable pressure continuous loading device, which belongs to the field of medical equipment and comprises a head, neck and chest fixator, a force application device, a connecting device and an AMI air bag type pressure sensor. The force applying device is connected with the head, neck and chest fixator through the connecting device, the force applying device applies pressure to the AMI air bag type pressure sensor, and the AMI air bag type pressure sensor is connected with the AMI host and transmits a pressure signal to the AMI host. The device has the advantages that 1, the relative position between the tested head and face part and the force application device is fixed and stable, and human influence is avoided; 2, the force application device can continuously apply stable pressure to fixed point positions or areas of the head and the face of a person for a long time; 3, adjustable force application conditions are needed: the force application size, the force application position and direction, and the shape and the size of a force application probe; and 4, the wearing scene of a real head-mounted product, such as surface pressure and multi-point / multi-area simultaneous force application, can be simulated as much as possible.

The utility model discloses a novel plankton sampling head, including bottom plate, the bottom plate middle part is provided with the air extraction hole, the air extraction hole below is provided with the fan, the air extraction hole top is provided with the mounting seat, the mounting seat is used for putting the petri dish, the mounting seat periphery is provided with at least three movable fixed clamping jaw, and at least three movable fixed clamping jaw cooperation fixed petri dish, the petri dish top is provided with the sampling distribution board, the sampling distribution board is connected with the outer protection casing, the outer protection casing cover is established in the mounting seat periphery and is sealedly connected with the bottom plate sampling space, the air extraction hole is through -connection with sampling space, the fan removes the air in sampling space from the air extraction hole, the sampling distribution board is used for the even diffusion of external air to the petri dish. The utility model can accommodate the matching petri dish of multiple types, and the operation is convenient and reliable.

The utility model discloses a double-disc machine structure which comprises a main body box, the upper surface of the main body box is fixedly connected with a bearing plate through bolts, the bearing plate is provided with a first optical detection glass platform, and the bearing plate is further provided with a detection assembly, a feeding assembly and a material collecting structure. The detection assembly, the feeding assembly and the material collecting structure are arranged around the first optical detection glass platform in a surrounding mode, materials enter the vibration disc through the feeding hopper, the vibration disc is driven by the vibration motor to vibrate, the materials are arranged in order along a specific track, and then the direct vibration structure is matched with the vibration disc. Materials are uniformly and stably conveyed to the first optical detection glass platform at a stable vibration frequency, in the process, the guide structure guides the materials to move through the guide plate with a preset track, it is ensured that the materials enter a detection area according to a preset path, meanwhile, the optical fiber structure monitors the positions and states of the materials in real time, signal feedback is provided for subsequent links, and the detection efficiency is improved. And the material enters the first optical detection glass platform.

The present disclosure provides a data processing method, device, electronic device, medium and computer program for account opening. The above method includes: setting multiple approval task pools according to regions, determining the approval parameters of each approval task pool; obtaining m groups of data when m customers open accounts, wherein the m groups of data come from n regions, m is an integer greater than or equal to 1, and n is an integer greater than or equal to 1; determining the account opening bank information corresponding to each group of data, and the account opening bank information includes regional information; according to the regional information, extracting the data corresponding to the regional information to the approval task pool corresponding to the regional information; and approving the data according to the approval parameters. In this way, the problem of uneven busyness of each branch can be alleviated, and the labor cost can be reduced, so that the centralized account approval business can be automated, differentiated and direct, and the diversity, accuracy, timeliness and compliance of the account opening business can be effectively improved.

The utility model relates to a tea table sofa, and belongs to the technical field of furniture equipment. The tea table sofa comprises a base, a cushion and a backrest, the cushion and the backrest are arranged on the base, a sliding rail is arranged on the base, the cushion is arranged on the sliding rail in a sliding mode and can move in the direction away from the backrest, and a limiting assembly capable of fixing and limiting the base and the cushion and a driving assembly for driving the cushion to move on the sliding rail are arranged between the base and the cushion; a tea table board is arranged between the backrest and the sliding rails on the base; a containing cavity is further formed in the base, and a lifting assembly capable of driving the tea table board to move up and down is arranged in the containing cavity. According to the tea table sofa, after the tea table is hidden, the occupied space can be greatly reduced, operation is convenient, and the whole sofa is attractive.

The invention discloses a four-rotor aircraft carrying various sensors, which comprises an airborne platform which is used as a core bearing unit, integrates and supports power required by flight of the aircraft, controls basic components and provides a stable mounting foundation for each device, and further comprises a plurality of sensors which are fixedly mounted at the highest position of the airborne platform, the laser radar equipment is used for acquiring unshielded three-dimensional environment data; the edge computing equipment is fixedly arranged between the airborne platform and the laser radar equipment and is used for realizing data real-time processing and decision output; the visual equipment is fixedly mounted below the front side of the airborne platform and focuses on collecting front and lower image information; the beneficial effects of the invention are that through cooperative carrying and data fusion of multiple sensors, the aircraft can efficiently complete three-dimensional modeling and dynamic detection of the surrounding environment while accurately sensing the flight state of the aircraft, thereby providing stable and reliable technical support for scientific research teams to carry out low-altitude economy related exploration; and diversified scientific research and application requirements are met.

This invention provides a dual-arm robotic arm for wireless charging on ships, comprising robotic arms located on either side of a wireless charging transmitter, connected to the transmitter via a connecting device. Each robotic arm includes a base plate, a turntable, a large arm, and a small arm. One end of a first hydraulic rod is hinged to the base plate, and the other end is hinged to the outer edge of the turntable. The bottom of the large arm is hinged to the turntable. One end of a second hydraulic rod is hinged to the outer edge of the turntable, and the other end is hinged to the lower part of the large arm. One end of the small arm is hinged to the top of the large arm, and one end of a third hydraulic rod is hinged to the middle of the small arm, and the other end is hinged to the hinge joint between the large arm and the turntable. This invention enables six degrees of freedom motion of the wireless charging transmitter by moving it with the dual-arm robotic arm, satisfying the diversity of ship movements and facilitating docking between the transmitter and receiver. After docking, the robotic arm is released; it does not affect the tight connection between the transmitter and receiver, serving only a connecting function.

The utility model discloses a multi -purpose cooking utensil relates to cooking utensil technical field, including furnace body and the body of a pot, the furnace body top is placed with the body of a pot, the body of a pot top is inverted with the pot cover, the outside bolt connection of body of a pot has the first mounting seat, and first mounting seat is along the body of a pot and is set two groups symmetrically, the first mounting seat middle part is rotatably connected with the lower buckle tool through the pivot. This multi -purpose cooking utensil body of a pot and pot cover are through the first mounting seat, the second mounting seat of symmetrical setting, cooperate rotatable lower buckle tool, upper buckle and lock catch and lower buckle groove, the engagement of upper buckle groove, can tightly close utensil, effectively prevent the heat and steam leakage when cooking, promote the cooking efficiency and safety, and this buckle structure is easy to operate, and the user opens and closes the pot cover, and the symmetrical design also guarantees that utensil overall stress is even, strengthens the stability and durability of structure, and brings the user more high -quality cooking experience.

The present invention discloses a three-degree-of-freedom detection device for optical elements, including an optical platform, on which an instrument platform and an element frame are arranged opposite to each other, the instrument platform is rotatably supported on the optical platform by a rotation adjustment module, the angle of the instrument platform relative to the element frame can be adjusted by the rotation adjustment module, the element frame is movably supported on the optical platform by a yaw base, and a pitch adjustment module and a yaw adjustment module are arranged between the element frame and the yaw base, and the pitch and yaw angles of the element frame can be adjusted by the pitch adjustment module and the yaw adjustment module. Through the separate adjustment module, the supporting structure of the optical instrument and the optical element is fully utilized, the overall structure is simple and easy, the processing speed is fast, and the safety and reliability are high, which can meet the rapid detection requirements of large-scale, large-caliber, diversified, high-precision, high-efficiency and high-cleanliness of the optical elements of the laser device.

The application belongs to the technical field of communication management and control, in particular to a communication automation data integrated management and control device, which comprises a frame, a controller is arranged on the front of the frame, a shelf is fixedly arranged in the cavity, mounting plates are arranged in an array on the shelf, a communication management machine is arranged on the mounting plates, a sealing door corresponding to the cavity is hingedly arranged on the front of the frame, a receiving groove is arranged in the frame, a square baffle is arranged in the receiving groove, and a sealing plate is arranged in the groove. The communication automation data integrated management and control device effectively adjusts the installation space through the square baffle and the bearing plate, improves flexibility, adjusts the position of the sealing plate when the adjusting plate moves, flexibly adjusts and freely arranges the space, can adapt to the installation of components and devices of different sizes and specifications, greatly improves compatibility and space utilization, facilitates wiring, heat dissipation, operation and maintenance, and meets the diversified assembly and expansion and reconstruction requirements.

The invention relates to beverage equipment which comprises a cup body assembly and a water outlet seat, the cup body assembly is detachably connected with the water outlet seat, and the cup body assembly comprises a cup body; a first water outlet is formed in the bottom wall of the cup body; the heating assembly is used for heating the liquid in the cup body; the first coupler is arranged at the bottom of the cup body and is electrically connected with the heating assembly; the water outlet seat comprises a second coupler, a first coupler and a second coupler, wherein each of the first coupler and the second coupler is provided with a water outlet avoiding space; the first coupler is electrically connected with the second coupler, and the water outlet avoiding space on the first coupler and the water outlet avoiding space on the second coupler are in butt joint to jointly form a water outlet space for liquid flowing out of the first water outlet to pass through. According to the beverage equipment, the cup body assembly can be reheated, so that the brewing and boiling requirements with the high temperature requirement are met.

The utility model aims to provide a multi-functional air cushion bed, including inflation body and support subassembly, inflation body includes first air cushion, second air cushion and third air cushion, the two opposite seamed edge of second air cushion is welded with one seamed edge of first air cushion and third air cushion respectively to form the bed body together, support subassembly includes cross-bar and a plurality of support piece, the cross-bar is connected with the support piece. The transverse rod penetrates through the first air cushion, the supporting pieces penetrate through the transverse rod, each supporting piece comprises an insertion rod, a swing rod, a telescopic rod, a supporting rod and a clamping ring, the insertion rod is arranged on the transverse rod, the swing rod is rotationally connected with the insertion rod, the telescopic rod is arranged on the swing rod in a sliding mode, a plurality of clamping grooves are formed in the telescopic rod, and the clamping ring is rotationally arranged at the end, away from the insertion rod, of the swing rod; the clamping ring is clamped with any clamping groove, so that the extension length of the telescopic rod is adjustable, the telescopic rod slides and extends out relative to the swing rod to support the first air cushion, and an included angle is formed between the first air cushion and the second air cushion. Therefore, the diversified and personalized use requirements of the user can be met.

The invention belongs to the technical field of remote control, and particularly relates to a remote control method and device for an intelligent household appliance and a computer storage medium. The method comprises the following steps: in response to a first control key in a plurality of control keys on a remote controller operated by a user, the remote controller obtains a first ultrasonic signal obtained by raising a first user audio corresponding to the first control key, and sends the first ultrasonic signal to the intelligent household electrical appliance; and the intelligent household electrical appliance carries out frequency reduction on the received first ultrasonic signal, obtains a recovered first user audio, identifies the recovered first user audio, determines a first voice instruction corresponding to the recovered first user audio, and executes a corresponding control function based on the first voice instruction. According to the method, by adding the control keys of the remote controller, personalized and diversified setting of the user instructions is realized, diversified use requirements of the user are met, the control flexibility of the intelligent household electrical appliance is enhanced, and the use experience of the user is improved.

The utility model belongs to the medical technical field, the utility model discloses a kind of rehabilitation gloves, including wearable glove body on patient's hand and the wrist end of the glove body extends to predetermined length;Magnetic bead layer for carrying out massage to patient's hand limbs is embedded on the inner wall of the glove body, still between the inner wall of the glove body and the magnetic bead layer, a temperature and pressure control structure for carrying out pressure and heating rehabilitation training to patient's hand limbs is embedded, and the temperature and pressure control structure is electrically connected with an intelligent control structure arranged on the wrist end of the glove body, further including rigid partition frame layer for providing support between the inner wall of the glove body and the temperature and pressure control structure to facilitate firm and comfortable wearing on patient's hand.The utility model has the advantages of being able to meet the diversification and complexification rehabilitation needs of patients, effectively improve rehabilitation training effect and efficiency and reduce the work burden of medical staff.

The invention provides an agricultural power transmission intelligent vehicle frame combination which comprises an intelligent vehicle frame and an auxiliary vehicle, and the intelligent vehicle frame is connected with the auxiliary vehicle through a cable and then connected with a power source. The intelligent frame comprises a main frame, and a cable storage device, a positioning module and an operation device which are arranged on the main frame. Four supporting arms are symmetrically arranged on the two sides of the main frame, and the supporting arms are fixedly connected with the main frame. The auxiliary vehicle is composed of an auxiliary frame, a rotating disc and a moving device, wherein the rotating disc and the moving device are arranged on the auxiliary frame. The rotating disc obtains power through the rotating disc motor, and the cable is connected with the rotating disc. And the structure of the moving device is the same as that of an operation device of the intelligent frame. The intelligent vehicle frame combination adopts a circuit system directly connected with a power supply to supply energy, and working modules with different functions are arranged on an intelligent vehicle frame platform to complete various kinds of work. Continuous energy supply of the agricultural machine is achieved, direct power supply of the power source is conveniently and rapidly achieved, environmental pollution caused by the fact that the agricultural mechanical equipment adopts a storage battery or a diesel engine is effectively reduced, the requirement for diversified functions in agricultural production is met, and the application prospect is wide.

A blending and storage system for white oil comprises a white oil blending device and a white oil storage tank which are arranged in sequence, the white oil blending device comprises a blending tank body, the white oil storage tank comprises a storage tank body, an auxiliary material feeding connector and a white oil refined material feeding connector are arranged at the top of the blending tank body, and the white oil refined material feeding connector is arranged at the bottom of the storage tank body. The bottom of the blending tank body is of a conical structure, a blending material outlet is formed in the lowest position of the blending tank body, a breather valve A used for balancing pressure in the tank is further arranged at the top of the blending tank body, and a flange of an outlet pipeline of the breather valve A is connected with a flange of the flame arrester B. The white oil blending device has the advantages that the blending tank body realizes uniform blending, and the quality stability of white oil products is improved. The stirring mode and parameters can be flexibly adjusted, and diversified blending requirements are met. The storage tank body is convenient for water to sink to the bottom and discharge, so that the quality of white oil products is prevented from being influenced. And the follow-up maintenance and cleaning difficulty of the storage tank for the white oil finished product is greatly reduced.

The application discloses a kind of biological enzyme immobilization temperature-sensitive microcapsule's long-lasting fragrance lyocell fiber and its preparation method, it is related to polyester fabric technical field.The method includes: first, the temperature-sensitive microcapsule with three-layer structure is prepared, the core contains lavender essential oil, ambrox and rosin glyceride fragrance, middle layer makes N-isopropyl acrylamide monomer polymerization and forms PNIPAM temperature-sensitive hydrogel, shell is nanocrystalline cellulose-polydopamine compound;Then using coaxial microfluidic spinning technology, with microcapsule NMMO aqueous solution as inner liquid, with eucalyptus pulp NMMO aqueous solution as outer liquid spinning;Finally, through biological enzyme coagulation bath crosslinking treatment, coagulation bath contains concentration gradient NMMO aqueous solution, horseradish peroxidase and hydrogen peroxide solution.The fragrance lyocell fiber prepared by the application has excellent temperature-sensitive fragrance release performance and washing resistance, solves the technical problems that microcapsule is easy to break off in traditional fragrance textiles, and fragrance material is easy to evaporate.

The present invention relates to a full-process self-deductive simulation test system and construction method for an autonomous driving vehicle, the system comprising: an element layer for constructing dynamic elements and static elements in a simulation test environment; a relationship layer for realizing the interaction between dynamic elements to obtain strong interaction relationships and weak interaction relationships; a component layer for constructing corresponding self-deductive test components according to strong interaction relationships and weak interaction relationships; a system layer for combining multiple self-deductive test components; and a scenario layer for generating test scenarios of different categories and quantities according to the set test purpose and conditions. The method comprises: setting dynamic and static elements; setting relationships between elements; combining different components from different elements and relationships between elements to construct a self-deductive test system; and screening unknown unsafe test scenarios from the self-deductive system according to the test purpose. Compared with the prior art, the present invention can effectively improve the completeness of generated test scenarios and improve the accuracy and efficiency of simulation tests for autonomous driving vehicles.

The invention relates to beverage equipment, and the beverage equipment comprises a cup body assembly which comprises a cup body, a first coupler and a heating assembly used for heating liquid in the cup body; a first water outlet is formed in the bottom wall of the cup body; the first coupler is arranged at the bottom of the cup body, a water outlet avoiding space penetrating through the first coupler is formed in the first coupler, and the first coupler is at least used for supplying power to the heating assembly; in the projection in the axis direction of the cup body, the projection of the first water outlet is located in the projection range of the water outlet avoiding space. According to the beverage equipment disclosed by the embodiment of the invention, the cup body assembly can be reheated through the arrangement of the heating assembly, so that some brewing and boiling requirements requiring relatively high temperature are met, and the diversity of the beverage equipment is better met.

The present invention discloses a quick pressure relief structure for a pressure cooker, comprising a pot cover, a pot body, a water pipe, a water storage device, an on-off valve, and an exhaust valve. One end of the water pipe is connected to the water storage device, and the other end of the water pipe extends into the pot body. The on-off valve is used to control the on-off of the pipeline between the water pipe and the water storage device, and the exhaust valve is used to control the on-off of the inside of the pot body and the outside of the pot body. The present invention also discloses a pressure relief method for a pressure cooker. The pressure relief time of the present invention is greatly shortened, which effectively prevents the problems of long waiting time and poor food taste caused by too long pressure relief time.

The invention discloses a usb multi-type equipment identification circuit, system and equipment thereof, and relates to the field of consumer electronics, the disclosed usb multi-type equipment identification circuit comprises a microcontroller, a detection circuit, a first switching circuit and a second switching circuit, a cc pin of the microcontroller is connected with the first switching circuit, the second switching circuit is connected with a type-c interface, and the type-c interface is connected with the detection circuit. The second switch circuit is used for being connected with the detection circuit, the detection circuit is further connected with the microcontroller, and the microcontroller is used for controlling the second switch circuit to conduct connection between the detection circuit and the type-c interface when the first switch circuit is grounded, detecting the type of interface insertion equipment and feeding back the type to the microcontroller. Compared with the prior art that the microcontroller only has one group of cc detection pins, the problem that the microcontroller cannot identify the power supply equipment in a host mode is solved by arranging the detection module, the equipment identification flexibility is improved, the diversification of equipment requirements is met, and the hardware cost is reduced.

The present disclosure relates to a writing pen and an electronic device, the writing pen comprising: a first pen barrel having a first writing end and a first joint end; and a second pen barrel having a second writing end and a second joint end; a connecting rope is connected between the first joint end and the second joint end, and the first joint end and the second joint end are configured to be detachably assembled, and a cavity accommodating the connecting rope is formed between the first joint end and the second joint end after assembly. The first joint end and the second joint end are assembled to form a dual-purpose pen with different functions at the two ends, and the connecting rope is accommodated in the cavity, which can improve the neatness and comfort of the dual-purpose pen in the use state; the first pen barrel and the second pen barrel can be detached and separated, which can avoid occupying too much space or being inconvenient to store or carry in the assembled state, and the writing pen can also be hung by a hook through the connecting rope. The connecting rope can also ensure that the first pen barrel and the second pen barrel always maintain a connection relationship, avoiding the problem of losing one of them.

This utility model discloses a heat treatment device for a large-megawatt planetary carrier in wind power. The heat treatment device includes a heat treatment furnace, an automatic lifting furnace door, a detachable heat treatment trolley, a liftable air-blocking device, a trolley running track, and a trolley rotation lifting air-cooling device. The heat treatment device has two sets, left and right. The automatic lifting furnace door is located on the side near the trolley rotation lifting air-cooling device. The detachable heat treatment trolley is placed in the cavity inside the heat treatment furnace. A liftable air-blocking device is installed below the detachable heat treatment trolley. The trolley rotation lifting air-cooling device is located on one side of the heat treatment furnace. By introducing the detachable heat treatment trolley, the automated lifting furnace door, and the air-cooling device, this equipment can achieve efficient integration of heat treatment and air cooling, reducing manual operation time and labor intensity, and significantly improving overall production efficiency.

A white oil blending tank comprises a blending tank body, the top of the blending tank body is provided with a white oil refined material feeding connector and an auxiliary material feeding connector, the bottom of the blending tank body is of a conical structure, the lowest position of the blending tank body is provided with a blended material outlet, and the top of the blending tank body is further provided with a breather valve A used for balancing pressure in the tank. A flange of an outlet pipeline of the breather valve A is connected with a flange of the flame arrester B; the stirring and blending mechanism comprises a central shaft stirring paddle assembly and a side stirring paddle assembly.The white oil blending device has the advantages that uniform mixing is achieved, and the quality stability of white oil products is improved. The stirring mode and parameters can be flexibly adjusted, and diversified blending requirements are met.

The invention discloses a data construction and training method of a multi-modal large language model for automatic driving, and the method comprises the steps: S10: data selection: selecting positive sample scene training data and negative sample scene training data from original video data collected by a vehicle, the positive sample scene refers to a scene in which a driving decision needs to be changed in the vehicle driving process, and the negative sample scene refers to a scene in which the driving decision does not need to be changed in the vehicle driving process; s20, data cleaning: extracting the positive sample scene training data and the negative sample scene training data selected in the step S10 into continuous frames of image data according to a preset frequency, and synchronously cleaning the vehicle speed and the navigation instruction of each frame; and S30: data annotation: obtaining a true value through a manual annotation mode. According to the data construction method, the diversity and balance of the data can be ensured, and the generalization ability of the model is improved.

This invention provides an auxiliary machine-side feeding device and method. The auxiliary machine-side feeding device includes: a frame, a tread feeding template, a zero-track feeding template, and a tread / zero-track drive mechanism. The tread feeding template is movably connected to the frame; the zero-track feeding template is movably connected to the frame and moves synchronously with the tread feeding template in at least one direction; the tread / zero-track drive mechanism is driven by both the tread feeding template and the zero-track feeding template, and is capable of driving both the tread feeding template and the zero-track feeding template to move synchronously in at least one direction. This invention solves the problems of complex structure and high cost of existing auxiliary machine-side feeding devices.