37 results about "Break point" patented technology

A capped bamboo-joint screw includes a screw body with a set of threaded grooves and a set of unthreaded areas on its outer surface. An adapter post is connected to the left side of the screw body, and a nut is connected to the left side of the adapter post. This device utilizes the alternating distribution of threaded grooves and unthreaded areas. When adjusting the screw length, the user can use pipe wrenches or wire cutters to clamp the unthreaded area and precisely cut it off along a preset break point. The threaded grooves remain intact after cutting, not affecting subsequent threaded connections with nuts or installation components, greatly expanding the length adaptability range and reducing the need for stock specifications. Simultaneously, the Phillips head groove on the left side of the nut, in conjunction with the adapter post, ensures that torque is effectively transmitted to the threaded section when tightening the screw with tools, enhancing installation stability. Furthermore, the integrated metal cap design makes this product aesthetically pleasing and provides excellent protection.

1. Name of this design: Version Comparison Graphical User Interface for Electronic Devices. 2. Purpose of this design: An electronic device. 3. The key design feature of this product is its graphical user interface. 4. The picture or photo that best illustrates the key design points: Design 1 front view. 5. Design 1 is designated as the basic design. 6. Purpose of the graphical user interface: The graphical user interface in this design is used to display version comparison information. 7. Description of the changes in the graphical user interface: The interfaces shown in the main views of Design 1-Design 8 are the version comparison information display interfaces. The main view displays multiple comparison information areas and operable buttons (such as the "Problem Entry" button and the Chinese / English switching button). Clicking on a comparison information area or an operable button will redirect you to a different screen. Specifically, in the interface shown in the main view of Design 5, there is a comparison information area and multiple operable buttons (such as the "Production Line Breakpoint ECU" button, the "OK" button, etc.). By clicking the "Production Line Breakpoint ECU" button, the interface can switch from the interface shown in the main view to the interface shown in the change state diagram 1. In the interface shown in the change state diagram 1, there are multiple operable buttons such as the "Production Line Breakpoint ECU" button and the "LCDS Push ECU" button. By clicking the "LCDS Push ECU" button, the interface can switch from the interface shown in the change state diagram 1 to the interface shown in the change state diagram 2. The interface shown in the main view of Design 6 displays a comparison information area and several operable buttons (such as the "Production Line Breakpoint ECU" button, the "Pin to Left" button, etc.). By clicking the "Pin to Left" button, the interface can switch from the interface shown in the main view to the interface shown in the change state diagram. In the interface shown in the main view of Design 7, there is a comparison information area. In this area, multiple information bars are displayed. By clicking on the information bars, the interface can be switched sequentially from the interface shown in the main view to the interface shown in Change State Figure 1 and Change State Figure 2. In the interface shown in the main view of Design 8, there is a comparison information area. By clicking on this area, the interface can be switched from the interface shown in the main view to the interface shown in the change state diagram.

The application discloses a kind of combat simulation system breakpoint saving method and device, the method includes: defining combat simulation system breakpoint saving parameter information and breakpoint recovery parameter information;Define the breakpoint saving interface and breakpoint recovery interface of combat simulation system;User sends breakpoint saving request to combat simulation system;Combat simulation system receives the breakpoint saving request, calls breakpoint saving interface, carries out breakpoint saving processing according to breakpoint saving parameter information, obtains breakpoint storage parameter information;User sends breakpoint recovery request to combat simulation system;Combat simulation system receives breakpoint recovery request, calls breakpoint recovery interface according to breakpoint recovery parameter information and processes breakpoint recovery request, recovers combat simulation system.This method saves the situation of a moment in the form of breakpoint in the simulation process, can be recovered from breakpoint in later period Run, shorten the time of starting from the beginning, improve the efficiency and system stability of activity such as drill, debugging.

The application provides a semiconductor test structure and a breakpoint failure positioning method. The semiconductor test structure comprises a first metal layer, a plurality of first sub-metal blocks arranged in a matrix along an X direction and a Y direction; a second metal layer, a plurality of second sub-metal blocks arranged in the X direction and the Y direction and arranged above the first sub-metal blocks in a staggered manner, the first sub-metal block and the second sub-metal block adjacent to the first sub-metal block in the staggered manner are connected in a head-to-tail manner through a conductive via to form a plurality of interconnected parallel and head-to-tail chain structures; and a dummy metal filling layer, a plurality of identification marks located at the periphery of the chain structure. Obviously, the semiconductor test structure provided by the application is that a plurality of identification marks are newly formed in the X direction and the Y direction in the dummy metal filling layer formed at the periphery of at least two asymmetric sides of the existing test structure for breakpoint failure analysis through filling or etching.

The invention relates to a terminal block (100) for connecting at least one electrical conductor, comprising an insulating housing (110) in which at least one connection point (111A, 111B, 111C) is formed for the at least one electrical conductor, wherein the at least one connection point (111A, 111B, 111C) has a current bar (112A) arranged in the insulating housing (110), a clamping spring (113A) arranged in the insulating housing (110) for clamping the conductor to be connected against the current bar (112A), and an actuating element (114A, 114B, 114C) for actuating the clamping spring (113A), wherein the actuating element (114A, 114B, 114C) is connected via at least one connection point (116A, 116B, 116C, 117A, 117B, 117C) is injection-molded in one piece onto the insulating housing (110) and wherein the at least one connection point (116A, 116B, 116C, 117A, 117B, 117C) has a predetermined breaking point, via which the actuating element (114A,114B, 114C) at at least one connection point (116A, 116B, 116C, 117A, 117B, 117C) is detachable from the insulating housing (110) and is insertable into an actuating opening (115A, 115B, 115C) of the insulating housing (110)..

The utility model relates to the technical field of detection equipment, in particular to an anti-falling device of foreign object detection equipment for an FOD runway. The device can buffer instant impact force, the instant stress limit value of the mooring rope is reduced, the occurrence rate of breakage accidents at the connecting position of the mooring rope is reduced, and the device is safer and more reliable. Comprising a supporting mechanism, a detection module and an anti-falling buffer mechanism, the supporting mechanism comprises a mounting chassis, an easy-to-break rod and a supporting rod, the easy-to-break rod and the supporting rod are both of a hollow structure, the easy-to-break rod is provided with an easy-to-break point, the lower end of the easy-to-break rod is connected with the mounting chassis, the upper end of the easy-to-break rod is connected with the lower end of the supporting rod, and the upper end of the supporting rod is fixed to the detection module; the anti-falling buffer mechanism comprises a mounting plate fixedly connected with the mounting chassis, a universal ball fixedly mounted on the mounting plate, a universal seat rotationally connected with the universal ball, a plurality of retaining ropes and a plurality of connecting springs, the retaining ropes are uniformly distributed in the circumferential direction of the universal seat, and one end of each retaining rope is fixedly connected with the edge of the universal seat.

A computer-implemented method for optimizing the placement of previously selected breaks in a media item is provided herein. Embodiments of the method include steps of identifying a break in a media item, the break being associated with a first break point at a first time during playback of the media item. The method may also include steps of dynamically adjusting the placement of the breaks within the media item based on the performance of the media item.

The application relates to a breakpoint repair circuit, method, device, equipment and medium of a display panel, wherein the method comprises the following steps: accessing a repair line when detecting that a breakpoint of the display panel occurs; adjusting the signal gain of the signal entering the repair line through a gain circuit, wherein the gain circuit is arranged on a circuit board outside the display panel; accessing a high-pass filtering link in the repair line, and compensating the signal attenuation on the repair line through the high-pass filtering link. By introducing the gain circuit to adjust the signal gain on the repair line, and compensating the signal attenuation on the repair line through the high-pass filtering link, the phenomenon of uneven brightness of the repaired section that may occur is inhibited, and the problem that the overall dark line of the repaired section still occurs after the breakpoint repair through the repair line is solved.

Surgical tools (10) are disclosed comprising a surgical clamp (20) having at least two, preferably exactly two, legs (21) and a base (22) connecting the legs (21). The tools (10) comprise one or more of the following additional elements: a handle (30) integrally connected to the clamp (20), wherein the handle (30) is connected to the base (22) of the clamp (20) by at least a predetermined first breaking point (91); a drilling aid (40) having at least two openings (41) the distance (D) between which is greater than the distance (d) between the legs (21) of the clamp (20); a drill bit (50) connected, in particular at a first end (51), to the handle (30) by at least a predetermined third breaking point (93);a parting opening (42) designed such that, in particular after separation of the drilling aid (40) from the handle (30), the clamp can be received in the parting opening (42), particularly in the region of the first predetermined break point (91), such that the clamp (20) can be separated from the handle (30) at the first predetermined break point (91). More generally, one-piece surgical tools (10; 10') having at least two elements interconnected by predetermined break points are also disclosed.

The invention provides a three-break short-distance communication breakpoint resume method based on a multi-source data fusion algorithm, and the method comprises the steps: collecting multi-source data, carrying out the normalization processing, and calculating the interruption confidence of a physical layer, a protocol session and an application transaction; calculating a three-break judgment index according to the confidence coefficients, and adaptively determining a preset threshold value in combination with the link reliability and the break frequency; identifying an interruption type through a three-interruption judgment result; selecting a breakpoint based on three-break judgment; recording a physical layer frame sequence number, a protocol packet sequence number and an application transaction identifier as a multi-layer breakpoint position index; recording a reserved breakpoint position in advance in the early warning interval; selecting a target breakpoint position according to the actual interruption moment; sending a continuous transmission request control message and receiving a continuous transmission response control message; and the interruption judgment is optimized by adaptively updating the weight coefficient. According to the method, the interruption type can be accurately identified, breakpoint selection is optimized, the retransmission data volume is reduced, the recovery time is shortened, and the performance and reliability of a short-distance communication system are remarkably improved.

The utility model relates to a single-beat type double-breakpoint auxiliary group, which comprises a shell, a connecting rod and a combined normally-closed contact. Two groups of static contacts corresponding up and down are arranged in the shell, a contact support is slidably mounted between the static contacts, and a clamping groove is formed in the top of the contact support. And a spherical head at one end of the connecting rod is movably arranged in the clamping groove and can move at multiple angles to ensure that the contact system acts accurately and reliably, and a cylindrical head at the other end penetrates through the side wall of the shell to be matched with the contactor body. A bridge-shaped contact is arranged in a first rectangular window of the contact support, and contact points at four corners of the bridge-shaped contact are provided with silver wires which are in line-surface contact with a static contact, so that weak signal conduction performance is improved. The combined normally-closed contact is composed of a fixed plate and a reed type movable plate, and a silver contact is installed at one end of the movable plate and penetrates through the second rectangular window to correspond to the lower static contact. When the contactor is powered on and off, the connecting rod drives the contact support to act to realize opening and closing of the contact. In addition, the convex hulls on the reed type movable plate increase the opening distance of the normally-closed contact, thereby preventing the generation and spreading of electric arc, and improving the breaking capacity and the insulating property.

1. Name of this design: Thought content editing area of ​​an artificial intelligence dialogue graphical user interface for electronic devices. 2. Purpose of this design: An electronic device. 3. The key design features of this product are the graphical user interface in the electronic device for which protection is sought. 4. The image or photograph that best illustrates the key design points: Design 1 change state diagram. 5. Design 1 is designated as the basic design. 6. Uses of Graphical User Interfaces: Graphical user interfaces are used for artificial intelligence dialogues, and protected areas of the graphical user interface are used for editing thought content. 7. Human-computer interaction method of graphical user interface: In Design 1, when the user touches or clicks the location where a breakpoint needs to be added, the graphical user interface changes from the main view of Design 1 to the change state diagram of Design 1 to display the added breakpoint and the instruction input box. In Design 2, when the user hovers the cursor over other locations where breakpoints need to be added, the graphical user interface changes from the main view of Design 2 to the change state diagram of Design 2 to display a prompt message for replacing the breakpoint. In Design 3, when the user touches or clicks the location where a breakpoint needs to be added, the graphical user interface changes from the main view of Design 3 to Design 3 Change State Figure 1 to display the added breakpoint and the instruction input box. When the user hovers the cursor over other locations where a breakpoint needs to be added, the graphical user interface changes from Design 3 Change State Figure 1 to Design 3 Change State Figure 2 to display a prompt message for replacing the breakpoint. In Design 4, when the user hovers the cursor over other locations where breakpoints need to be added, the graphical user interface changes from the main view of Design 4 to Design 4 Change State Figure 1 to display a prompt message for replacing the breakpoint. When the user touches or clicks other locations where breakpoints need to be added, the graphical user interface changes from Design 4 Change State Figure 1 to Design 4 Change State Figure 2 to display the replaced breakpoint and the command input box. In Design 5, when the user touches or clicks the location where a breakpoint needs to be added, the graphical user interface changes from the main view of Design 5 to Design 5 Change State Diagram 1 to display the added breakpoint and the instruction input box. When the user hovers the cursor over other locations where a breakpoint needs to be added, the graphical user interface changes from Design 5 Change State Diagram 1 to Design 5 Change State Diagram 2 to display a prompt message for replacing the breakpoint. When the user touches or clicks the location where a breakpoint needs to be added, the graphical user interface changes from Design 5 Change State Diagram 2 to Design 5 Change State Diagram 3 to display the replaced breakpoint and the instruction input box. 8. The portion of the graphical user interface shown by the dashed lines in the views of Design 1 to Design 5 does not constitute the part that is protected by this design.

The invention discloses a breakpoint reextraction method and device for application jobs, electronic equipment and a storage medium, and relates to the technical field of big data. The method comprises the following steps: receiving breakpoint reextraction parameters of at least one application job; the method comprises the following steps: in a process of scheduling and running entity contents of application jobs through a job scheduling system, determining a first application job with running interruption and an interruption job step of the first application job; generating a new application job for carrying out breakpoint reextraction on the first application job based on the job interruption step, the breakpoint reextraction parameter of the first application job and the entity content of the first application job; and resubmitting the new application job to the job scheduling system for scheduling operation. According to the technical scheme provided by the invention, the breakpoint reextraction of the operation step level can be realized, the manual dependence can be reduced, and the automation degree can be improved.

A daisy chain breakpoint recovery method, apparatus and device, and a storage medium. The method comprises: acquiring a connection number of front-end sampling chips in a daisy chain, and on the basis of the connection number, determining whether there is a breakpoint in the daisy chain; when there is a breakpoint in the daisy chain, limiting a travelling power on the basis of sampled data before the breakpoint; reconnecting the front-end sampling chips in the daisy chain, such that the daisy chain is restored to normal; and after the daisy chain is restored to normal, acquiring overall sampled data, and restoring the travelling power on the basis of the overall sampled data.

A method for producing a film as part of a packaging container in order to at least partially delimit an interior of the packaging container. The film is designed to tear at a predetermined breaking point as a result of mechanical pressure, in order to provide access to the interior. The method includes: providing the film as a monofilm or film composite with at least one layer, in which at least the outer and / or inner layer with respect to the interior is made of plastic, producing a predetermined breaking point in the form of a laser engraving by removing part of the film by means of a laser, wherein the removal is by way of a local reduction of the film thickness by the laser and thus the predetermined breaking point is designed as a laser engraving.

The invention provides an anti-breakpoint debugging method based on Webpack, a storage medium and electronic device.The method comprises the steps that a server side determines version information of the Webpack according to a compiler object of the Webpack; if it is recognized that the current operation environment is not the development environment, obtaining an anti-breakpoint debugging script; according to the version information of the Webpack, determining corresponding code injection strategy information; injecting the breakpoint-preventing debugging script into a target file of the front-end application according to the code injection strategy information; when a front-end application is accessed by a user side, the user side executes the following steps: triggering an anti-breakpoint debugging script to initialize so as to determine whether to start an anti-breakpoint debugging function or not; and if it is determined that the breakpoint-preventing debugging function is enabled after the initialization of the breakpoint-preventing debugging script is completed, running the breakpoint-preventing debugging script so as to monitor a breakpoint debugging behavior of the user side according to a preset mode in the breakpoint-preventing debugging script. The quick breakpoint-preventing debugging method deployment is realized, and the method has the advantages of simplicity in operation, high efficiency and low cost.

This invention discloses a method, apparatus, device, and storage medium for determining breakpoints in log files. The method includes: upon detecting the start of a backup service, acquiring a pre-recorded current log breakpoint; reading transaction data from the current log breakpoint in the log file and performing a data backup operation; during the backup operation, updating a pre-created list of incomplete backup transactions and a list of invalid transactions; and when breakpoint determination conditions are met, determining and saving the next log breakpoint corresponding to the next start of the backup service based on the list of incomplete backup transactions and the list of invalid transactions. Considering that in the prior art, after a backup service restart, the log file corresponding to the breakpoint may have been cleaned up and cannot be backed up normally, this solution addresses this problem by ignoring invalid long transactions when determining breakpoints based on an invalid transaction list, thereby preventing the backup service from failing to find the log file corresponding to the breakpoint after a restart and ensuring normal backup after restart.

This application discloses a method, apparatus, storage medium, and electronic device for determining the location of rebar breakpoints. The method includes determining corresponding target segment intervals based on the distances between multiple adjacent supports with a connection relationship in an engineering drawing; determining a current breakpoint in the engineering drawing that matches at least one target rebar object based on a first reference length of a first reference rebar object; repeating the following steps until the remaining length of the target rebar object is less than the first reference length: if the current breakpoint is within the target segment interval, determining the next current breakpoint based on the first reference length, using the current breakpoint position as the starting point; if the current breakpoint is outside the target segment interval, adjusting the current breakpoint position to within the target segment interval that meets the segment length condition, and determining the next current breakpoint based on the first reference length. This application solves the technical problem of low efficiency in determining the location of rebar breakpoints in related technologies.

Aspects of the disclosure are directed to software breakpoint insertion in shared code regions. In accordance with one aspect, the disclosure includes setting a new instruction to a trap instruction in a local cache memory using a software breakpoint; locking a cache line in the local cache memory to generate a locked cache line; writing the trap instruction to a memory location specified by the locked cache line; and fetching the trap instruction from the local cache memory to start a diagnostic process.

This utility model relates to the field of three-break leakage current protection switch technology, and discloses the internal connection structure of the base of the three-break leakage current protection switch, including a base (1) and a small bracket (2). The base (1) has a raised shell (11) facing away from the main body. The raised shell (11) has a receiving cavity (12). The receiving cavity (12) has a bracket cavity (13) for installing the small bracket (2) in the middle. The bracket cavity (13) has a first buckle (14) on both sides. The small bracket (2) has a slot (21) that matches the first buckle (14). This connection structure achieves quick fixation of the small bracket by cooperating with the first buckle on the base and the slot on the small bracket. It does not use screws for installation, thus improving installation efficiency and service life.

The invention discloses a breakpoint resuming method and system supporting multiple communication protocols, and relates to the technical field of information transmission, and the method comprises the steps: obtaining a communication protocol set of a communication link, and carrying out the dynamic detection through employing the communication protocol set as a detection constraint, and obtaining the real-time link state information; analyzing the real-time link state information and judging whether the real-time link state information is interrupted or not, and if yes, collecting breakpoint information; dividing the to-be-transmitted data according to the breakpoint information to obtain a division result; and acquiring a breakpoint resuming instruction, and resuming the pre-transmitted data temporarily stored in the predetermined buffer area based on the breakpoint resuming instruction. According to the invention, the technical problems of low interruption recovery efficiency and high data retransmission redundancy caused by poor adaptability of a breakpoint resuming function to a communication protocol and incapability of dynamically adapting to various link states in the prior art are solved, and the technical effects of improving the protocol adaptability and real-time performance of breakpoint resuming, reducing the data retransmission redundancy and improving the data transmission efficiency are achieved.

The invention discloses an automatic random breakpoint running and breakpoint continuous playing method without industry selection, and relates to the technical field of SaaS knowledge learning in the vertical industry. A unique industry identifier is preset through the system, and a user can directly enter a breakthrough process by clicking a single entrance without selecting an industry, a level or difficulty; automatically and randomly extracting questions from a corresponding industry question bank by the system, recording the number of answered questions in the current round of the user, and ensuring that the questions in the single round of breakthrough breaking are not repeated; meanwhile, the breakpoint breakpoint breaking state of the user is recorded, and the user can directly recover the progress to continue breaking after exiting; and users are supported to enter infinitely and randomly refresh questions, so that the knowledge breakthrough with light weight, high efficiency and high experience is realized. According to the invention, the problems of tedious operation, repeated questions, incapability of continuous playing and complicated process of a traditional breakthrough-making platform are solved, and the method is suitable for a SaaS drainage and knowledge training system in the vertical industry.

The present application relates to the technical field of fork chamfering, and proposes a fork chamfering cutting device, which comprises a fixed base, and further comprises support plates, auxiliary rollers, a first driving assembly, a steering adjusting assembly, a chamfering assembly, a support frame, a second driving assembly, a height adjusting assembly and a third driving assembly, the support plates are provided in two, the two support plates are symmetrically arranged at the top end of the fixed base, the auxiliary rollers are also provided in two, each auxiliary roller is rotationally arranged on the support plate, through the above technical solution, the problem that the horizontal section of the fork needs to be chamfered and cut multiple times in the prior art is solved, the fork needs to be adjusted multiple times during the entire chamfering and cutting process, the chamfering device also needs to be accurately aligned with the breakpoint of the last chamfering and cutting, and the chamfering process inevitably causes missing points or uneven conditions, which reduces the working efficiency of the fork chamfering and cutting, and also affects the finished product quality of the fork.

The utility model relates to the technical field of wire connection, in particular to a breakpoint connection terminal and a pressing device thereof, which comprises a substrate, one end of the substrate is provided with a first joint, the other end of the substrate is provided with a second joint, the cross sections of the first joint and the second joint are U-shaped, and a copper wire is pressed on the U-shaped concave side of the first joint. The first connector is provided with an anti-disengaging piece which is used for preventing the copper wire from disengaging from the first connector, the aluminum wire is pressed on the U-shaped concave side of the second connector, and the second connector is provided with an anchoring piece which is used for improving the pressing strength of the aluminum wire. The utility model has the effects of improving the connection strength of the copper wire and the aluminum wire and reducing the production cost of the vehicle body.

The invention provides a method for detecting a divergence rupture point and a lens matching method. The method comprises the following steps: setting corresponding targets for the left eye and the right eye of a user at initial positions respectively; moving the target corresponding to the left eye to the left and moving the target corresponding to the right eye to the right until the targets corresponding to the left eye and the right eye of the user are separated or broken from the image fusion state and become a broken state; after one or more of preset relaxation actions are executed and kept for a preset duration, if targets corresponding to the left eye and the right eye of the user in the visual field of the user are changed into an image fusion state from a rupture state at the current divergence rupture point, detection continues; if the targets corresponding to the left eye and the right eye of the user are still in a rupture state at the current divergence rupture point, executing a stop operation; the current divergent rupture point is updated; and stopping the operation, and determining the current divergent rupture point obtained by the last detection as the ultimate divergent rupture point, thereby detecting the more stable ultimate divergent rupture point.

The present application relates to a kind of methods for preventing breakpoint of rotary multi-position switch, according to the following steps: step one: determine the coaxial series installation mode of dynamic potential energy conversion mechanism and gear switching mechanism;Step two: determine the pre-rotation angle θ of dynamic potential energy conversion mechanism 储 , select compression spring with stiffness coefficient k1, determine the initial torque M0 of compression spring installation, determine the radius r of compression spring installation 簧 ;Step three: determine that the design of dynamic potential energy conversion mechanism satisfies torque monotone increasing, maximum torque M 储 And elastic potential E P ;Step four: on gear switching mechanism, determine the positioning number n, wedge angle θ 楔 , the rotation angle α corresponding to wedge edge, rotation angle γ of smooth section, select n compression spring with stiffness coefficient k2.The remarkable effect of the present application: when switching between switch gears, the overall mechanism torque is always zero, can be passive to realize the instantaneous jump of adjacent gear, does not depend on operator, will not appear the stay between gears, avoid breakpoint.

A frame for a velocipede comprising a down tube. The down tube is provided with a break point or hinge comprising a lock 110. The lock is arranged to maintain the down tube in a deployed position when

The invention relates to the technical field of disconnecting switches, and provides a double-breakpoint rotary contact disconnecting switch, and a performance analysis method of the double-breakpoint rotary contact disconnecting switch comprises the steps: obtaining operation maintenance information; obtaining a fault conduction diagram based on the operation maintenance information; wherein the fault conduction diagram comprises a starting node, a termination node, at least one intermediate node, at least two conduction directions and conduction weights corresponding to the conduction directions; obtaining a first performance index and at least one second performance index based on the fault conduction diagram; and obtaining an analysis result based on the first performance index and the second performance index. According to the double-breakpoint rotary contact isolation switch provided by the invention, the technical problem that the isolation switch opening reliability and the operation and maintenance efficiency cannot be effectively improved because the influence degree of each fault factor on the reliability of the opening process is difficult to quantify under the scene of coexistence of various types of abnormal fault factors in the prior art can be solved.