Operation standard management system, operation standard management method and program

Abstract

To provide an operation standard management system, an operation standard management method and a program with improved convenience of an operation standard.SOLUTION: An operation standard management system of the present disclosure comprises: a preparation unit which prepares an operation standard constituted of information related to operation content to be performed in a facility in which an operator works; a storage unit which can store a plurality of operation standards; an editing unit which edits a specific operation standard stored in the storage unit; and a browsing unit for browsing the specific operation standard. The editing unit executes deliberation and approval of the revised operation standard according to a workflow prepared in advance when the specific operation standard before revision in the storage unit is revised to the revised operation standard, and updates the operation standard before revision in the storage unit to the revised operation standard to browse the revised operation standard in the browsing unit when the deliberation and approval of the revised operation standard are completed.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present disclosure relates to a work standard management system, a work standard management method, and a program.

Background Art

[0002] In facilities such as factories where multiple workers work, various operations are generally carried out based on work standards that summarize information such as the specific content of the work, its process, and the risks associated with the work. This work standard is often used and stored in paper form, leaving room for improvement in terms of convenience.

[0003] For example, Patent Document 1 below describes a system that realizes the digitization of technical documents using an integrated technical document management device capable of registering creation data such as technical documents such as papers and in-house reports, and files in program or program execution format.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] According to Patent Document 1 above, it is expected that digitization of documents can improve convenience in terms of viewing and storing documents, for example, work standards. On the other hand, there is room for improvement in terms of ensuring convenience when revising or updating documents.

[0006] In view of the above problems, an object of the present disclosure is to provide a work standard management system, a work standard management method, and a program that improve the convenience of work standards.

Means for Solving the Problems

[0007] To achieve the above object, a work standard management system according to a first aspect of the present disclosure includes a creation unit that creates work standards composed of information related to work content performed within a facility where workers work, a storage unit capable of storing a plurality of the work standards, an editing unit that edits a specific one of the work standards stored in the storage unit, and a browsing unit that browses a specific one of the work standards. When the editing unit revises a specific pre-revision work standard in the storage unit to a revised work standard, the editing unit executes the review and approval of the revised work standard according to a workflow prepared in advance. When the review and approval of the revised work standard are completed according to the workflow, the editing unit updates the pre-revision work standard in the storage unit to the revised work standard, making the revised work standard viewable in the browsing unit.

[0008] In such a work standard management system, the revision work of work standards can be smoothly executed without restricting the viewing by workers or the like.

[0009] A work standard management system according to a second aspect of the present disclosure is the work standard management system according to the first aspect of the present disclosure, wherein the browsing unit can view the pre-revision work standard while the review and approval of the revised work standard are being carried out.

[0010] In such a work standard management system, it is possible to avoid the restriction of viewing work standards due to the review and approval work of work standards.

[0011] A work standard management system according to a third aspect of the present disclosure is the work standard management system according to the first or second aspect of the present disclosure, further including an education management unit that instructs a manager of a plurality of workers to educate the plurality of workers about the revised work standard when the review and approval process of the revised work standard is completed.

[0012] In such a work standard management system, it is possible to reliably inform the workers who perform a specific work about the work standards related to the work, leading to the prevention of accidents.

[0013] The work standard management system according to the fourth aspect of the present disclosure is the work standard management system according to any one of the first to third aspects of the present disclosure, wherein the workflow includes a step of notifying specific reviewers and approvers in a predetermined order.

[0014] In such a work standard management system, since the notification is executed in the desired order by the workflow, it is possible to prevent forgetting to contact the reviewers who need to conduct the review and the approvers with approval authority, or sending the notification in an order different from the correct order.

[0015] The work standard management system according to the fifth aspect of the present disclosure is the work standard management system according to any one of the first to fourth aspects of the present disclosure, wherein the work standard is configured by combining a plurality of description columns, and the editing unit can perform editing for each of the plurality of description columns of the work standard.

[0016] In such a work standard management system, since the editing work can be carried out in units of description columns, the workability of the editing work is high.

[0017] The work standard management system according to the sixth aspect of the present disclosure is the work standard management system according to any one of the first to fifth aspects of the present disclosure, further including a search unit that searches for a specific work standard from among the plurality of work standards stored in the storage unit.

[0018] In such a work standard management system, a desired work standard can be quickly specified and browsed.

[0019] The work standard management method according to the seventh aspect of the present disclosure includes a step of creating a work standard composed of information related to work content performed within a facility where an operator works, a step of storing a plurality of the work standards in a viewable state, and a step of editing a specific one of the stored work standards. In order to revise a specific pre-revision work standard to a revised work standard, a step of performing review and approval of the revised work standard according to a workflow prepared in advance, and when the review and approval of the revised work standard are completed according to the workflow, a step of updating the pre-revision work standard to the revised work standard and making the revised work standard viewable.

[0020] In such a work standard management method, the revision work of the work standard can be smoothly executed without restricting viewing by operators or the like.

[0021] The program according to the eighth aspect of the present disclosure causes a processor of a computer to execute a process of creating a work standard composed of information related to work content performed within a facility where an operator works, a process of storing a plurality of the work standards in a viewable state, and a process of editing a specific one of the stored work standards. In order to revise a specific pre-revision work standard to a revised work standard, a process of performing review and approval of the revised work standard according to a workflow prepared in advance, and when the review and approval of the revised work standard are completed according to the workflow, a process of updating the pre-revision work standard to the revised work standard and making the revised work standard viewable.

[0022] In such a program, the revision work of the work standard can be smoothly executed without restricting viewing by operators or the like.

Advantages of the Invention

[0023] According to the work standard management system, work standard management method, and program of the present disclosure, the convenience of the work standard can be improved.

Brief Description of the Drawings

[0024]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Embodiments for Carrying Out the Invention

[0025] Hereinafter, each embodiment for carrying out the present disclosure will be described with reference to the drawings. In the following, the range necessary for the description for achieving the object of the present disclosure is schematically shown, and mainly the range necessary for the description of the corresponding part of the present disclosure will be described, and the parts for which the description is omitted are assumed to be based on known techniques. Also, the same or corresponding members in the drawings are denoted by the same or similar reference numerals, and duplicate descriptions are omitted. Further, when a plurality of the same or corresponding members are included in the drawings, in order to make the drawings easy to see, in some cases, only some of them are denoted by reference numerals.

[0026] Before describing an embodiment of the present disclosure, an example of a work standard managed in the work standard management system according to this embodiment will be described with reference to FIG. 1.

[0027] FIG. 1 is a diagram showing an example of a work standard. The work standard shown in FIG. 1 is a work standard created for the operation of a forklift used by workers in a facility such as a factory. As shown in FIG. 1, this work standard includes identification information such as a work standard document number, a revision number, and a revision date. In addition, the work standard includes classification information for classifying by work content. Specifically, the block name, work name, unit work name, etc. shown in FIG. 1 correspond to the above-described classification information.

[0028] In addition, the above-described work standard includes information regarding the work content. Specifically, mainly, an "Elementary Work and Method" column that describes the content and method of the work in chronological order, a "Critical Point" column that describes precautions related to the elementary work, a "Reason" column that describes the background and basis described in this critical point column, and a "Measures in Case of Abnormality" column that describes the measures to be taken when an abnormality occurs during the work may be included. A worker who views the work standard can confirm the content of each of the above columns and perform the work in accordance with the content, thereby enabling smooth work performance.

[0029] FIG. 2 is a schematic diagram showing an example of a work standard management system according to an embodiment of the present disclosure. As shown in FIG. 2, the work standard management system 1 according to the present embodiment may include a work standard management device 10 that manages work standards, and a plurality (three in FIG. 2) of terminal devices 20-1, 20-2, 20-3 that can communicate with the work standard management device 10 via a network NW.

[0030] The terminal devices 20-1, 20-2, and 20-3 may be able to utilize various functions provided by the work standard management device described later by communicating with the work standard management device 10. In this regard, the terminal devices 20-1, 20-2, and 20-3 may include functions for utilizing the functions provided by the work standard management device 10, such as a communication function and an input / output function. Specifically, the terminal devices 20-1, 20-2, and 20-3 may include a computer. The terminal devices 20-1, 20-2, and 20-3 mentioned here may include various devices, such as smartphones, tablet terminals, PCs, or wearable terminals. Also, although the terminal devices 20-1, 20-2, and 20-3 shown in FIG. 2 are all exemplified as being connectable to the work standard management device 10 via the network NW, they may also be directly connected to the work standard management device 10 by a cable or the like. Furthermore, the number of terminal devices connectable to the work standard management device 10 is not particularly limited. In the following description, the above-mentioned multiple terminal devices 20-1, 20-2, and 20-3 may be collectively referred to as the "terminal device 20".

[0031] The work standard management device 10 is a device for managing work standards and can be configured by a computer such as a server. As shown in FIG. 2, the computer constituting the work standard management device 10 may include at least one processor 11, a ROM (Read Only Memory) 12 and a RAM (Random Access Memory) 13 as an example of a memory, a storage 14, a communication interface (I / F) 15, and an input / output interface 16. Also, these components may be communicably connected to each other via an internal bus.

[0032] The processor 11 can be constituted by, for example, a CPU (Central Processing Unit), and can execute various programs and control each part. Specifically, this processor 11 can read out various control programs stored in, for example, the ROM 12 or the storage 14, and execute the program using the RAM 13 as a working area. In the present embodiment, it can operate, for example, to process a browsing request from the terminal device 20 or the like, or a request for editing or updating a work standard.

[0033] The ROM 12 can store various programs and various data. Also, the RAM 13 can temporarily store a program or data as a working area.

[0034] The storage 14 can be constituted by a recording medium such as an HDD (Hard Disk Drive), an SSD (Solid State Drive), or a flash memory. Various data such as various programs including an operating system and data of the created work standard can be stored in this storage 14. can be stored at least temporarily.

[0035] The communication interface 15 can transmit and receive predetermined data by wired communication using a communication cable including Ethernet (registered trademark) communication, or wireless communication based on a wireless communication standard such as, for example, Wi-Fi (registered trademark) or Bluetooth (registered trademark). The work standard management device 10 of the present embodiment can communicate with a plurality of terminal devices 20 operating in a facility or the like via the network NW by this communication interface 15.

[0036] The input / output interface 16 may be an interface for connecting to various external devices (not shown) such as input means like a mouse, touch panel, and keyboard, display means such as a liquid crystal display, a connector to which an external recording medium can be connected, and various drives typified by a DVD drive. The work standard management device 10 can receive requests etc. from the administrator of the work standard management system 1 via this input / output interface 16.

[0037] Figure 3 is a functional block diagram of the work standard management device shown in Figure 2. The work standard management device 10 of the work standard management system 1 according to the present embodiment can realize a plurality of functions as shown in Figure 3 by the above-described hardware configuration. Specifically, the work standard management device 10 of the work standard management system 1 according to the present embodiment includes at least a creation unit 31 for creating a work standard, a storage unit 32 capable of storing a plurality of work standards, an editing unit 33 for editing a specific work standard stored in the storage unit 32, and a browsing unit 34 for browsing a specific work standard.

[0038] The creation unit 31 is mainly realized by the processor 11 and functions when newly creating a work standard. When creating a work standard in the creation unit 31, it can be provided in the form of a workflow that prompts the operator to sequentially fill in each description column of the work standard.

[0039] The storage unit 32 is mainly realized by the storage 14 and stores work standards etc. created by the creation unit 31. A plurality of work standards may be stored in the storage unit 32. The work standards stored in this storage unit 32 may all be stored in a browsable state and may be updated for each revision.

[0040] The editing unit 33 is for editing a specific one of the plurality of work standards stored in the storage unit 32. This editing unit 33 is mainly realized by the processor 11 and can operate when revising a work standard.

[0041] In addition, when the editing unit 33 revises a specific work standard (hereinafter referred to as the "pre-revision work standard") in the storage unit 32, it executes the review and approval of the revised work standard (hereinafter referred to as the "revised work standard") according to a pre-prepared workflow. When the review and approval of the revised work standard are completed according to the workflow, the pre-revision work standard in the storage unit 32 is updated to the revised work standard. A specific example of the revision process by the editing unit 33 will be described later.

[0042] The browsing unit 34 provides a specific work standard in a browsable format, for example, based on a request from the terminal device 20. This browsing unit 34 is mainly realized by the processor 11 and can provide the latest work standard for a specific operation. The work standard browsable by the browsing unit 34 may be the latest one among the work standards stored in a browsable state in the storage unit 32. Therefore, for example, even if it is a work standard in which the revision work is in progress in the editing unit 33, the pre-revision work standard can be browsed until the revised work standard is stored in a browsable state in the storage unit 32.

[0043] In addition, the work standard management device 10 may include a search unit 35. In this search unit 35, based on search conditions input by the operator via the terminal device 20, such as conditions related to classification or process, a specific work standard can be extracted and provided from the work standards stored in the storage unit 32.

[0044] Furthermore, the work standard management device 10 may include an education management unit 36. In this education management unit 36, for example, when a new work standard is created by the creation unit 31 or when a specific work standard is revised by the editing unit 33, it instructs the supervisor of the operator to educate the operator who will execute the content of the new work standard. In the education management unit 36, in addition to instructing the supervisor, the progress of the education for each operator can be recorded to assist the smooth progress of the education.

[0045] The work standard management system 1 having the above-described configuration can be provided to the terminal device 20 in the form of an application program. Hereinafter, with reference to the display screen displayed on the terminal device 20 side, an example of an operation when searching for and browsing work standards in the work standard management system 1 according to the present embodiment will be described.

[0046] FIG. 4 is an example of a display screen displayed on a terminal device in the work standard management system and is an example of a top page. An operator can start a desired operation by pressing one of the buttons in the display screen shown in FIG. 4, specifically, either the "1. New Creation / Editing" button or the "2. Full Amount Search List" button. Here, in order to browse work standards, the "2. Full Amount Search List" button among the above two buttons is pressed.

[0047] FIG. 5 is an example of a display screen displayed on a terminal device in the work standard management system and is an example of a master screen displayed when the button on the top page shown in FIG. 4 is pressed. Buttons corresponding to classifications relevant to work standards to be created / edited or browsed, such as a "Work Area System Table" button and a "Factory Master" button, are displayed on the master screen shown in FIG. 5. An operator who has seen this screen can narrow down the work standards by appropriately pressing the button corresponding to the work standard to be browsed.

[0048] FIG. 6 is an example of a display screen displayed on a terminal device in the work standard management system and shows an example of a detailed search screen. For example, in the master screen shown in FIG. 5, when the "Factory Master" button is pressed, the search screen shown in FIG. 6 is displayed. The search screen is composed of items such as factory, process, job type, work area, and work name, and each item can be selected from a pull-down menu and narrowed down.

[0049] FIG. 7 is an example of a display screen displayed on a terminal device in the work standard management system, and shows an example of a browsing screen. When the above-described series of searches is completed and the work standard to be browsed is specified, a browsing screen as shown in FIG. 7 is displayed. Similar to the conventional work standard shown in FIG. 1, the browsing screen may be composed of a plurality of description columns, specifically, an "element operation / method" column, a "critical point" column, a "reason" column, and the like. With the above-described configuration, an operator can easily identify and browse a single work standard via the owned terminal device 20.

[0050] Next, with reference mainly to FIG. 8, the work standard management method according to the present embodiment will be described. Here, a series of processes in the case of creating and revising a single work standard will be described. In the following description, the case where the work standard management method is executed by the above-described work standard management device 10 is exemplified. In this regard, the following description also serves to explain the operation and effect of the above-described work standard management system 1. Further, the work standard management method described below may be implemented by executing a control program that causes at least one processor 11 of a computer constituting the work standard management system 1, for example, a computer constituting the work standard management device 10, to execute a predetermined operation. This control program may be stored in a storage means such as a ROM 12 or a storage 14, or may be provided in the form of a non-temporary computer-readable recording medium.

[0051] The work standard management method according to this embodiment includes at least a step of creating a work standard composed of information related to the work content performed within the facility where the worker works (corresponding to step S11 described later), a step of storing a plurality of work standards (corresponding to step S12 described later), and a step of editing a specific stored work standard (corresponding to steps S13 to S19 described later). In order to revise a specific work standard before revision to a revised work standard, a step of performing review and approval of the revised work standard according to a workflow prepared in advance (corresponding to step S15 described later), and a step of updating the work standard before revision to the revised work standard and making the revised work standard viewable when the review and approval of the revised work standard are completed according to the workflow (corresponding to steps S18 and S19 described later). The following will be described in detail.

[0052] Figure 8 is a flowchart showing an example of the work standard management method according to an embodiment of the present disclosure. In the work standard management method according to this embodiment, first, a new work standard is created (step S11). The creation of a new work standard is mainly realized by the creation unit 31. When creating a new work standard, for example, press the "1. New creation / editing" button on the top page shown in FIG. 5, and then press any button corresponding to the work standard to be created on the master screen to execute the workflow for creating a new work standard.

[0053] Figure 9 is an example of a display screen displayed on a terminal device in the work standard management system, showing an example of an entry screen in the "Element work / Method" column. As shown in FIG. 9, the creation of a new work standard can be implemented by selecting the content to be entered in each entry column from the pre-recorded work content, etc., or by directly inputting by the worker or the like. In order to realize the selection work or input work by the worker with a simple operation, in the creation unit 31, the entry columns that need to be filled in may be sequentially displayed on the terminal device 20 held by the worker or the like. In addition, the worker can execute an editing operation for each entry column displayed on the terminal device. Note that the method for creating a new work standard is not limited to the above, and can be appropriately changed.

[0054] When a new work standard is created, the created work standard is converted to a viewable state and stored in the storage unit 32 (step S12). By this storage, a newly created work standard can be viewed by an operator at any time if the operator searches for it.

[0055] Next, the case of revising the work standard created as described above will be explained. The revision is mainly carried out by the editing unit 33. For example, when an operation for revising a certain work standard stored in the storage unit 32 is performed from a specific operator via the terminal device 20 (Yes in step S13), the editing unit 33 starts the creation work of the revised work standard (step S14). The method for creating the revised work standard is not particularly limited, but after specifying a certain work standard, similar to the case of creating a new revised work standard, each description column of the work standard can be sequentially displayed on the terminal device 20 to prompt the operator to perform an entry operation, thereby implementing it.

[0056] Incidentally, in the work standard management method according to the present embodiment, even after starting the above-described revision work, until the update work (step S19) described later is completed, the work standard that is the basis of the revised work standard (that is, the work standard before revision) can be viewed. In other words, the work standard before revision can be viewed while the revised work standard is being reviewed and approved. In this way, by enabling the work standard before revision to be viewed even during the revision work of the work standard, it is possible to prevent a period during which the work standard cannot be viewed from occurring, and it does not interfere with the viewing by the operator. As a result, it is possible to avoid a decrease in work efficiency associated with the temporary inability to view the work standard.

[0057] When the operator's revision work is completed and the revision work standard is created, next, the review of the revised content of the revision work standard and the decision-making work on whether to update it are started (step S15). The review and decision-making work can be executed according to a preset workflow. The workflow preferably includes a list containing at least the contact information of one or more reviewers in charge of the review and the contact information of one or more decision-makers with decision-making authority, as well as the review content of the reviewers and the decision content of the decision-makers. Also, the reviewers and decision-makers included in the list may vary depending on the field to which the work standard belongs and the work content. Furthermore, the list preferably includes information regarding the order in which the reviewers and decision-makers will be notified as described later.

[0058] When starting the review and decision-making process according to the workflow, the work standard management device 10 first refers to the order of notifications included in the list and notifies the reviewers and / or decision-makers designated to be contacted first (step S16). The content of the notification is not particularly limited. For example, it may directly request the review result or decision result via communication means such as email or chat, or it may be a notice to hold a meeting for review or decision-making by multiple people.

[0059] In the editing department 33, it is preferable to sequentially collect the progress of the review by the reviewers and the decision results by the decision-makers, etc., so that the operators, etc. can grasp the progress situation via the terminal device 20, etc. If the progress of the review and the progress situation of the decision results can be grasped in this way, it becomes easier to predict the update timing of the work standard and to urge the work for specific reviewers or decision-makers, etc., which is preferable.

[0060] When all the reviews and decisions by the reviewers and decision-makers of the revised work standard created above are completed (Yes in step S17), the update work of the pre-revision work standard is started. Specifically, first, the revised work standard is stored in the storage unit 32 in a viewable state (step S18). Next, the viewing of the pre-revision work standard in a viewable state is stopped, and it is updated to the revised work standard (step S19). The updated revised work standard becomes viewable instead of the pre-revision work standard.

[0061] As described above, according to the work standard management system, work standard management method, and program according to the present embodiment, an operator can immediately confirm a desired work standard at the work site, leading to safe work at the work site. Further, even at the timing when the work standard is revised, there is no period during which the work standard cannot be viewed, so the work standard can be updated smoothly, and more convenient management of the work standard can be realized. Furthermore, the creation, revision, and subsequent review and approval of the work standard are speeded up. As a result, since the result of the review and approval is quickly reflected in the form of an update to the revised work standard, the operator can always grasp the latest work standard. Therefore, a work standard can be provided with high convenience.

[0062] In the present embodiment, an example is shown in which most of the plurality of components required for the work standard management system 1 are realized by the computer of the work standard management device 10, but a part of the components can also be realized by other devices, for example, the terminal device 20 or other control devices (not shown).

[0063] Further, in each of the above embodiments, the processor refers to a processor in a broad sense, and includes a general-purpose processor (for example, a CPU) and a dedicated processor (for example, a GPU: Graphics Processing Unit, an ASIC: Application Specific Integrated Circuit, an FPGA: Field Programmable Gate Array, a programmable logic device, etc.).

[0064] Furthermore, the operation of the processor in each of the above embodiments may be achieved not only by one processor but also by a plurality of physically separated processors cooperating. Also, the order of each operation of the processor is not limited to the order described in the above embodiments, and may be changed as appropriate.

[0065] The present disclosure is not limited to the above-described embodiments, and various modifications can be made and implemented without departing from the gist of the present disclosure. And all of them are included in the technical idea of the present disclosure.

Explanation of Signs

[0066] 1 Work standard management system 10 Work standard management device 11 Processor 20, 20-1, 20-2, 20-3 Terminal device 31 Creation unit 32 Storage unit 33 Editing unit 34 Browsing unit 35 Search unit 36 Education management unit

Claims

1. A creation unit that creates work standards composed of information related to the work content performed within the facility where the operator works; A storage unit capable of storing a plurality of the work standards; An editing unit that edits a specific one of the work standards stored in the storage unit; A viewing unit that views a specific one of the work standards, and comprising: The editing unit: When revising a specific pre-revision work standard in the storage unit to a revised work standard, executes the review and approval of the revised work standard according to a workflow prepared in advance; When the review and approval of the revised work standard are completed according to the workflow, updates the pre-revision work standard in the storage unit to the revised work standard, and enables the revised work standard to be viewed in the viewing unit. A work standard management system.

2. The viewing unit is capable of viewing the pre-revision work standard while the review and approval of the revised work standard are being carried out. The work standard management system according to Claim 1.

3. When the process of the review and approval of the revised work standard is completed, further comprising an education management unit that instructs the managers of a plurality of operators to educate the plurality of operators regarding the revised work standard. The work standard management system according to Claim 1.

4. The workflow includes a process of notifying specific reviewers and approvers in a predetermined order. The work standard management system according to Claim 1.

5. The work standard is composed of a combination of a plurality of description columns, and the editing unit is capable of editing for each of the plurality of description columns of the work standard. The work standard management system according to Claim 1.

6. Further comprising a search unit that searches for a specific one of the plurality of work standards stored in the storage unit. The work standard management system according to Claim 1.

7. A step of creating work standards composed of information related to the work content performed within the facility where the operator works; A step of storing a plurality of the work standards in a viewable state; A step of editing a specific one of the stored work standards, and A step of executing the review and approval of the revised work standard according to a workflow prepared in advance in order to revise a specific pre-revision work standard stored to a revised work standard. When the review and approval of the revised work standard are completed according to the workflow, updating the work standard before revision to the revised work standard and making the revised work standard viewable, and including steps and steps, Work standard management method.

8. On the computer processor, A process of creating a work standard composed of information related to the work content performed within the facility where the worker works, A process of storing a plurality of the work standards in a viewable state, A process of editing a specific one of the stored work standards, A process of executing the review and approval of the revised work standard according to a workflow prepared in advance in order to revise a specific work standard before revision to a revised work standard, A process of updating the work standard before revision to the revised work standard and making the revised work standard viewable when the review and approval of the revised work standard are completed according to the workflow, and including processes and processes, Program.

Images