31results about How to "Prevent operability" patented technology

The utility model relates to a display stand technical field especially a kind of mechanism and display stand for display stand connection and folding, first inner tube is used to be connected with a bar piece;Second inner tube is used to be connected with adjacent another bar piece;Movable hinged joint is connected with first inner tube and second inner tube respectively at both ends;Spring shaft is connected with one end of movable hinged joint by passing through first inner tube;Elastic member is sleeved on spring shaft;In folding process, movable hinged joint is pulled, it is partially removed from first inner tube, and movable hinged joint is driven to compress elastic member along the axial displacement of first inner tube, to further fold the bar piece connected with second inner tube, flexibly adapt to different application scenarios needing directional folding or multidirectional rotation, high versatility, high space utilization, compact structure;Realize the quick folding and unfolding of display stand, without disassembly and unlocking, and the display stand after disassembly is convenient to store and carry, further improve the use convenience of display stand, and stable.

The invention provides an electronic certificate two-dimensional code aggregation decoding method, apparatus and device, and a storage medium. The method comprises the steps of scanning and uploading two-dimensional code data to a standardized aggregation decoding interface through a terminal device; after the aggregation decoding platform receives the data, a corresponding authorization decoding service interface is called for decoding, and user identity information is obtained; and then querying the permission state of the user in real time, and automatically triggering a corresponding service processing flow according to a query result. According to the invention, the whole process from two-dimensional code decoding, authority verification to service execution is automatically communicated, the compatibility, security and processing efficiency of the system are remarkably improved, and the method is suitable for electronic certificate offline service scenes requiring high security and high concurrency.

This application relates to the field of automated storage equipment technology, specifically to a storage bin with an electrically operated lid and its control method. The method includes: receiving an operation command for a target-numbered test tube; locating the target-numbered test tube and its corresponding electrically operated lid mechanism based on identification information, and obtaining the current status information of the target-numbered test tube; performing a logical verification between the operation type and the current status information; if the verification passes, generating a drive command; performing an execution condition compliance check before executing the drive command; when the execution condition compliance check passes, executing the lid-opening action corresponding to the operation type; and confirming the completion of the action and updating the system status record of the target-numbered test tube based on the execution feedback from the electrically operated lid mechanism. This application, through a combination of status verification, process recording, and feedback confirmation, achieves automation, safety, and traceability of test tube lid-opening operations, improving the accuracy and reliability of sample management.

The utility model discloses a chain window opener mounting structure belongs to chain window opener field, including protection shell, the bottom fixed mounting of protection shell has chain window opener body, the inside chamber both sides of protection shell all are slidingly connected with the limit stop, one side of limit stop is provided with fixed code board, the output fixedly connected with connecting plate of chain window opener body, one side of connecting plate is provided with the window block, both sides of window block all are fixedly connected with the installation side plate, through the cooperation of above -mentioned each device, avoided the risk of difficult installation or damage window frame because of the non - matching of punching position, and the installation personnel can find the best punching position quickly without trying and adjusting repeatedly, shortened the installation time, improved work efficiency, make the installation process more simple and fast, improve the installation efficiency, be convenient for daily maintenance and inspection work, ensure the normal operation and safety of window.

This utility model relates to the field of door lock technology, specifically a positioning and rotating handle device. It includes a mounting plate with a positioning ring installed in the center. A handle component is rotatably connected to the outside of the positioning ring. The handle component includes a rotating part, the front end of which is fitted onto the positioning ring. A spring is installed inside the rotating part, and a steel ball is attached to the end of the spring. The positioning ring has several equally spaced positioning grooves arranged in a ring on the side near the handle component. When the handle component rotates, the steel ball engages with each positioning groove in sequence, increasing rotational stability and feel. In this positioning and rotating handle device, the spring pushes the steel ball to engage with the positioning grooves on the positioning ring, achieving precise positioning of the handle component during rotation. Each rotation, with the steel ball embedding into the positioning groove, provides clear tactile feedback to the user, preventing any play or jamming during operation. It is particularly suitable for applications requiring high operational precision, improving stability and reliability.

The utility model relates to the technical field of gate valve, put forward a kind of soft sealing gate valve of convenient replacement of gate, including flow guide box, the hollow plate is fixed in the flow guide box top surface, the hollow plate is through with flow guide box inside, the rectangular plate is movably inserted in the upper end inside of hollow plate, the middle part of rectangular plate is equipped with through -hole, the second moving groove is equipped in the through -hole inner wall, the lifting rod is movably inserted in the through -hole inside, the lifting rod is passed through through -hole, the threaded column is fixed in the lower end of lifting rod, the threaded column outside is connected with gate with screw thread, the gate is located in flow guide box inside, the elastic sleeve is fixed in the gate outside. The utility model through with rectangular plate moves out hollow plate inside, can take out gate, to separate gate and lifting rod, complete the disassembly replacement of gate, simple and quick operation can improve the speed of replacement of gate, the work of convenient maintenance personnel, prolong the service life of soft sealing gate valve whole.

The invention discloses a method for controlling a stage device to move through an electric push rod, and the method comprises the following steps: S1, constructing a plurality of groups of device control channels, and carrying out the adaptive matching and safety binding of each group of device control channels and a target stage device based on the dynamic evaluation of device fingerprints and channel capabilities; s2, generating a visual interface for each group of distributed equipment control channels, and integrally displaying static equipment information, dynamic operation parameters and graded alarm information; s3, switching between a manual operation mode and an automatic operation mode in response to the switching instruction subjected to authority authentication; s4, configuring an equipment operation rule based on the operation requirement of the stage equipment, marshalling multiple groups of equipment control channels which need to cooperatively operate, and configuring a synchronous marshalling strategy; and S5, based on the received control instruction, driving an electric push rod with touch unlocking and zero point simulation functions, and executing accurate position motion control.

The invention relates to the technical field of automatic production, and discloses a multi-robot-based new energy street lamp full-flexible production line which comprises a product information body, a modular intelligent production platform and an intelligent production unit. The product information body records and outputs own state information through a distributed digital file; the modularized intelligent production platform generates a modulated wireless energy field bearing the information according to the state information; and the intelligent production unit obtains energy from the energy field, decodes the state information to autonomously execute operation, and writes an operation result back to the distributed digital file to update the state. Decentralized self-organization of a production process is realized through closed loop of a product state, a physical field and a unit behavior, key operation safety is guaranteed by a digital and physical dual authentication mechanism, physical field regulation and control driven by distributed consensus are realized, energy on-demand distribution of a high-energy-consumption task and physical anchoring of a high-precision cooperative task are realized, and the method is suitable for large-scale popularization and application. And the system cooperation performance and the resource utilization efficiency are improved.

The invention discloses oil seal air tightness detection equipment for an electric vehicle driving motor. The oil seal air tightness detection equipment comprises a rack, a conveying module and an air tightness detection module. The conveying module is matched with a jacking limiting assembly through a roller conveying line, and automatic feeding, accurate positioning and rigid locking of the motor are achieved. The air tightness detection module comprises an air tightness instrument, an air tightness pressing module and an automatic point inspection module. A pressing air cylinder drives an air tightness pressing head to conduct sealing detection on the motor oil seal. The equipment innovatively adopts a jacking-support changing structure, stable stress is provided by a supporting plate, and detection micro-motion is eliminated; an automatic point inspection function is integrated, a zero leakage comparison tool can be periodically called to carry out on-line self-calibration on the system, and precision drift is effectively early warned. The motor oil seal airtightness detection device realizes full automation of the detection process, has the characteristics of high precision, high stability and intelligent self-maintenance, and ensures the consistency and long-term reliability of motor oil seal airtightness detection.

This utility model discloses a high-efficiency and energy-saving steam generator for pasta processing, including a support frame. A generating mechanism is mounted on the support frame. The generating mechanism includes a cylinder, a water tank, a water injection pipe, an external pipe, a material tank, and an outer cover. A pressure relief mechanism is located at the top of the cylinder. The pressure relief mechanism includes a support pipe, a pressure relief sleeve, an inlet pipe, a sliding rod, a sealing plate, a pressure spring, a contact ring, an adjusting sleeve, a rotating sleeve, a screw, a transmission sleeve, and a positioning mechanism. The support pipe is located on the top surface of the cylinder and connected to the water tank. The pressure relief sleeve is installed inside the support pipe, and the inlet pipe is located at the bottom of the pressure relief sleeve. When the steam pressure inside the cylinder is too high, the pressure pushes the sealing plate through the inlet pipe, overcoming the preset force of the pressure spring, thus forming a flow channel between the sealing plate and the inlet pipe, allowing the pressure to be released smoothly. At this time, the pressure relief sleeve discharges excess pressure, avoiding the risk of equipment damage or dangerous leakage due to excessive pressure in the steam generator.

The invention belongs to the technical field of workstation systems, and particularly relates to a work ticket self-service system and a use method thereof. Through the cooperation of the execution item login system and the execution permission approval unit, the user permission is locked from an execution port corresponding to the permission, and secondary approval is performed in combination with the real-time state of the equipment read by the wired signal acquisition unit in the cabinet, so that a complete and safe application chain is formed. The self-service operation instruction is synchronously stored in the corresponding terminal parameter storage unit and can be kept synchronous with the transaction processing terminal system, so that the lending and returning operation time, the specific workstation, the user identity, the operation content and the corresponding equipment state can be completely recorded; therefore, the management traceability is realized, and meanwhile, the data uniformity among a plurality of work stations is ensured.

The application discloses a multi-source instruction arbitration and safety degradation system for multi-robot terminals, and belongs to the technical field of embodied intelligence and industrial robot control. In order to solve the industry pain points that the priority parameter of the existing multi-source instruction arbitration scheme can be tampered with, the emergency instruction has no hardware isolation, the disconnection means losing control, and the interface is fragmented, the application adopts ROM / OTP to solidify five layers of priority and monitor tampering in real time; an independent hardware isolation path is configured for P0 atomic safety instruction, software non-preemption and hardware bypass dual protection are realized; based on heartbeat monitoring, differentiated disconnection degradation of all kinds of terminals such as unmanned aerial vehicles, ground robots, mechanical arms and underwater equipment is realized; and mainstream robot communication protocols are adapted through standardized control primitives and multi-protocol interfaces. The application can effectively eliminate multi-source instruction conflicts, improve the safety of unmanned system operation, and has strong universality and engineering landing value.

The invention discloses a unified control method and device for smart home equipment. The method comprises the following steps: receiving original equipment communication data through an integrated multimode communication chipset; analyzing the original equipment communication data through a protocol identification algorithm to obtain equipment analysis data; selecting a target protocol analysis plug-in from a cloud protocol library according to the equipment analysis data; then, storing the target protocol analysis plug-in into a local memory of a system gateway; processing the original equipment communication data by using the target protocol analysis plug-in to obtain the current equipment state of the smart home, and / or encoding the control instruction by using the target protocol analysis plug-in to obtain a target control instruction which can be identified by the smart home equipment; and controlling the smart home device according to the current device state and / or the target control instruction. According to the invention, the technical problem that protocol compatibility and ecological barriers coexist during cross-brand interconnection and intercommunication of all smart home devices in a smart home system in the prior art is solved.

The application discloses an adaptive foot pressing device for a robot end effector and the end effector. The end effector comprises a base unit, and the device comprises a receiver, a foot pressing unit, an elastic reset assembly and a non-contact distance measuring assembly. The foot pressing unit is movably connected with the receiver and can adaptively deflect to fit a workpiece when pressed; the distance measuring assembly detects the distance between the base and the workpiece, and feeds back to guide the robot to adjust the posture to realize normal alignment. The end effector is also provided with a switching unit which integrates drilling, hole diameter and hole depth measurement and hole detection hole units, and through movement, the units can successively share a second channel to work. The application solves the problems of difficult normal alignment and rigid collision of complex curved surfaces, realizes the full-process automation and closed-loop control of normal alignment, hole making, dust collection and detection, and significantly improves the machining precision and efficiency.

The utility model provides a steel rotary latch which comprises a lock box, a mounting plate, a rotary structure, a connecting handle, a rotary handle and a positioning structure, the mounting plate is fixedly mounted on the outer side of the lock box and fixedly mounted on a door plate, and the rotary structure is mounted on one side in the lock box; the connecting handle is rotationally installed on the outer side of the rotating structure, the rotating handle is fixedly installed on the top of the connecting handle, and the positioning structure is fixedly installed on the other side in the lock box. Due to the arrangement of the rotating structure, the rotating handle and the positioning structure, the risk of misoperation is low, operation is convenient, locking stability is high, and external interference is not likely to happen.

The invention relates to a motor vehicle lock, in particular an electric lock, having a locking mechanism (1, 2) which mainly comprises a rotary lock lever (1) and a locking claw (2). The motor vehicle lock also has an electric opening drive (3) for the locking mechanism (1, 2) and an energy store (4) for emergency powering of the opening drive (3) in an emergency mode and thus for emergency opening of the locking mechanism (1, 2). According to the invention, the locking mechanism (1, 2) is held in its "open" state by means of the opening drive (3) in the emergency mode and during or after the opening process.

This utility model relates to the field of disinfectant storage technology and discloses a storage device for hydrogen peroxide disinfectant, including a limiting mechanism, an auxiliary mechanism, and a protective mechanism. The limiting mechanism is located inside the protective mechanism, and the auxiliary mechanism is located above the limiting mechanism. The limiting mechanism includes a circular plate with a fixed ring fixedly connected to the bottom of the circular plate. A limiting plate is installed at the upper end of the circular plate, and a limiting column is rotatably connected to the inner wall of the limiting plate. A connecting column is rotatably connected to the inner wall of the limiting column. By setting the limiting mechanism, when the operator presses the limiting plate, the center of the limiting plate tilts upward. The rise of the limiting plate drives the limiting column and the connecting column to move upward together. The limiting column and the connecting column themselves also rotate to a certain extent to ensure the stability of the limiting plate when it rises. The circular column drives the sealing plate to move upward, thereby opening the outlet and allowing the hydrogen peroxide disinfectant to be poured out smoothly.

The application provides an airport luggage check-in intelligent joint control method and system based on multi-person identification, relates to the technical field of airport intelligent service, and comprises the following steps: acquiring monitoring images of operation areas of multiple self-service devices; identifying and tracking multiple users in the operation areas according to the monitoring images, generating user identifiers of the users, and establishing an association relationship between the user identifiers and the luggage of the users; in combination with the positional relationship of the users with respect to the self-service devices and the state information of the self-service devices, distributing corresponding target self-service devices to the users, and establishing a binding relationship between the user identifiers and the corresponding target self-service devices; and generating control strategies of the target self-service devices according to the binding relationship. The application has the technical effect of reducing security risk problems such as user operation of incorrect devices and non-matching of luggage and user identity.

The utility model provides an isolated transmission terminal based on industrial network interconnection, including terminal shell, the transmission mechanism is equipped with in terminal shell inner bottom wall, and terminal shell inner bottom wall one side is equipped with moving mechanism, and terminal shell inner bottom wall other side is equipped with limit mechanism, and fixed mounting of fixed plate has in transmission terminal shell one end, the utility model discloses through fingerprint sensor carries out the right verification, only the fingerprint of authorized personnel is identified, motor will start, drives screw rod rotation, and then drives the mobile block and the moving plate to move down, makes the terminal machine to show in the user's face, and the user operation is convenient, has guaranteed that the terminal machine will not be contacted at random under the unauthorization condition, effectively prevents data disclosure and illegal operation, and the user can carry out data transmission operation fast, conveniently after through fingerprint verification, realizes efficient data exchange through data transmission mouth, has improved work efficiency greatly.

An aerosol-generating device is disclosed. The aerosol generating device includes: a body providing an insertion space in which a wand is accommodated; a heater configured to heat the rod; a rod detection sensor disposed adjacent to the insertion space; a suction sensor configured to detect a suction; a temperature sensor configured to detect a temperature of the heater; and a control section configured to determine whether or not the rod is inserted into or removed from the insertion space, in which the control section is configured to: determine whether or not the rod is inserted into or removed from the insertion space based on a signal detected by the rod detection sensor, and determine whether or not the rod is inserted into or removed from the insertion space based on the signal detected by the rod detection sensor; and abolishing the insertion determination or the removal determination based on at least one of a signal detected by the suction sensor or a signal detected by the temperature sensor.

The utility model relates to the field of urban rail transit, in particular to an urban rail transit confirmation device which comprises a control system, a fingerprint identification module and a control supporting frame, the upper end of the control supporting frame is connected with a power supply assembly, and the control system is connected into the control supporting frame. The fingerprint recognition module is fixedly connected to the outer wall of the control supporting frame, and the outer side of the control supporting frame is connected with a road opening and closing adjusting assembly. According to the utility model, through two-person fingerprint identification confirmation, single-person misoperation or violation operation is effectively prevented, and the safety risk in the operation process of urban rail transit is reduced; due to the characteristics of rapid identification and high accuracy of the capacitive sensor, the reliability of fingerprint identification is ensured, and operation delay or errors caused by identification errors are reduced; the combination of the road opening and closing adjusting assembly and the fingerprint identification module is reasonable in structural design, easy to install and maintain, low in cost and suitable for being widely applied and popularized in an urban rail transit system.

The utility model belongs to the technical field of seats, and particularly relates to a semi-automatic lifting hidden type small table plate mechanism of a vehicle armrest, which comprises an armrest shell with an upward opening and an upper cover covering the opening of the armrest shell, a sliding plate capable of sliding up and down is arranged on a first sliding rail arranged on a base plate in the armrest shell, and the sliding plate can slide up and down. The base plate is provided with a spring for driving the sliding plate to move upwards, the upper end of the sliding plate is hinged to a small table plate capable of being turned over by 90 degrees, an unlocking handle is arranged on the armrest shell at the opening, and the unlocking handle is connected with a lock pin or a lock hook capable of locking the sliding plate through an inhaul cable. The small table has the advantages that the area of the small table plate is large, the stability is good after the small table plate is unfolded, and the small table is comfortable to use.

The invention discloses a hardware one-way security data ferry storage device and a method thereof, and aims to solve the problems that cross-physical isolation network data exchange is tedious in operation, low in efficiency and high in security risk. The device comprises a first storage space, a second storage space, a first host interface used for being connected with a first network, a second host interface used for being connected with a second network, a control logic unit and a hardware one-way data transmission module. The two host interfaces are physically independent and can be simultaneously and respectively connected to computers of networks with different security levels. When a low-security network is connected through the first host interface, only the first storage space is visible, and written data is synchronized to the second storage space in real time by the one-way transmission module; and when the high-security network is connected through the second host interface, only the second storage space is visible for reading the synchronized data. According to the mechanism, the possibility of reverse leakage of data is fundamentally avoided, and the efficiency and convenience of data ferrying are remarkably improved while the security of the intranet is ensured.

The present application relates to the technical field of privacy computing, and specifically provides a distributed multi-party asynchronous isolated secure retrieval method and device, wherein a shared network is formed by a data retrieval initiator and a data owner using a front-end machine cluster node, retrieval business is completed based on a front-end machine TEE (Trusted Execution Environment) and a hidden query method; a permission control unit is configured on remote authentication permission control of the TEE, permission monitoring at an instruction level is realized, and through sensitive data desensitization, open data and ciphertext query data confusion, query initiator anonymization and query condition fuzzification, query intention request collection, it is ensured that the entire life cycle of data query and statistical operation is carried out in a trusted isolated environment, and the security and privacy protection of data are strengthened. Compared with the prior art, the present application effectively prevents malicious operation and illegal access, thereby ensuring the security and privacy protection of data.

The utility model discloses a sinking type cart handle which comprises a cart body (1), an opening window (5) is arranged on one side of the cart body (1), and an adjusting plate (4) is movably arranged in the opening window (5). The cart handle (3) is hinged to the cart body (1) in a sinking mode, the cart handle (3) is provided with a lock shaft (13), two switch lock keys (2) are arranged on the lock shaft (13), and the cart handle (3) and the lock shaft (13) are covered with the adjusting plate (4); and the cart handle (3) is stabilized and the two switch lock keys (2) are limited by pressing down the adjusting plate (4). The handle sinking type design is adopted, impact damage of goods to the position of the lock shaft is prevented, the safety of the position of the lock shaft is improved, meanwhile, the bottom space is better considered, and the occupancy rate of the top space is reduced.

The invention relates to the technical field of medical instruments, in particular to a bladder irrigation device for nursing, comprising: a portable box, one side of which is rotatably connected with a box cover; the mounting plate is fixedly connected to the interior of the portable box; the three-cavity catheter is arranged at the position of the portable box and used in cooperation with the portable box, and the upper end of a flushing pipe of the three-cavity catheter is communicated with a normal saline bag; the two peristaltic pumps are symmetrically and fixedly mounted on the two sides of the mounting plate respectively and used for extruding and pushing a flushing pipe and a drainage pipe of the three-cavity catheter. The two symmetrically-arranged peristaltic pumps are adopted to drive the flushing pipe and the drainage pipe of the three-cavity catheter respectively, according to the flushing requirement, the hydraulic power unit is adjusted and controlled to flexibly adjust and control the pressing and releasing states of the pump cores to the pipeline, and the controllable operation of independent pressurization in the flushing and drainage process is achieved; the system is suitable for various nursing scenes such as wards, emergency treatment and families, and the treatment safety and efficiency are improved.

The utility model relates to a kind of pneumatic rack rotation-stopping mechanism, it is installed below rotating gear, including mounting seat, connecting rod base, rotation-stopping swing arm, cylinder and connecting rod;Mounting seat is fixed with interval with connecting rod base, and the upper portion of mounting seat is rotatably connected with the one end of rotation-stopping swing arm by swing arm pivot I, and V-shaped connecting rod mechanism is hinged between the other end of rotation-stopping swing arm and connecting rod base, rack, same with the modulus of rotating gear and can be engaged with rotating gear is installed on rotation-stopping swing arm, the lower portion of mounting seat is rotatably connected with the rear seat of cylinder by cylinder rear axle, and the end of piston rod of cylinder is hinged with the middle part of V-shaped connecting rod mechanism by fish eye joint.The utility model can utilize cylinder to drive rotation-stopping swing arm swing to make rack and rotating gear engage to realize the rotation-stopping of rotating gear, accurate positioning, easy operation, long service life.

This application relates to the field of low-voltage electrical technology, specifically to a circuit breaker linkage indicator mechanism and a parallel switching device, comprising a linkage rod, a linkage seat, an indicator, a padlock, and an elastic element; one end of the linkage rod abuts against the indicator; the linkage rod is provided with a first locking part and a second locking part arranged at intervals along the axial direction of the linkage rod; the elastic element is connected to the indicator, and when the padlock and the linkage seat release their obstruction of the first locking part and the second locking part respectively, the elastic element is used to push the indicator to switch from the closed state to the open state. This application can be applied to various operating sequences, ensuring that the indicated state of the indicator is strictly consistent with the actual on / off state of the circuit, effectively improving the safety and reliability of the product.

The invention relates to a universal high-voltage cabinet five-prevention operation acousto-optic guiding device and method, the device comprises an input acquisition module, a main control unit, an output output module and a human-computer interaction interface, the input acquisition module is used for acquiring state signals of a load switch, an isolation switch, a cabinet door and a grounding switch in a high-voltage switch cabinet in real time; the main control unit performs five-prevention logic judgment based on the collected state signal, automatically identifies the cabinet type and judges the current operation process; the output quantity output module is used for driving the acousto-optic indicating device and the locking executing mechanism; and the man-machine interaction interface is used for displaying an operation process and outputting an acousto-optic prompt Through dynamic judgment and step-by-step guidance of a power transmission process and a power failure process, when misoperation or an abnormal state is detected, an alarm can be given in time, and subsequent operation is stopped, so that the operation safety and universality of the high-voltage switch cabinet are improved.

The utility model discloses an adjustable multifunctional protective restraint appliance for psychiatry department in the technical field of medical nursing instruments, which comprises a restraint strap and a fixing strap, an adjusting component is arranged on one side of the restraint strap, one side of the adjusting component far away from the restraint strap is fixedly connected with the fixing strap, and the other end of the fixing strap is connected with a nursing bed; the adjusting assembly comprises an adjusting sleeve part axially and fixedly connected to one side of the restraint strap in a sleeving mode, an adjusting shaft is rotationally connected to the center of the adjusting sleeve part, the adjusting shaft perpendicularly penetrates through the adjusting sleeve part and the restraint strap and is rotationally connected with the inner walls of the two sides of the adjusting sleeve part, and the adjusting shaft located in the adjusting sleeve part is meshed with a toothed belt assembly. The fixing device is novel and perfect, unlocking is achieved by pressing the knob, the adjusting shaft is rotated to drive the toothed belt assembly to collect or loosen the restraint strap, the knob is loosened to be locked again, limbs of a patient are wrapped under the appropriate tightness of the adjusting strap, and the length of the fixing strap is adjusted through the length adjuster to restrain the limbs of the patient from swinging. Therefore, the convenience and the safety of the adjustment operation are enhanced.