WO2001041100A9 - Interactive computer-based training system and method - Google Patents
Interactive computer-based training system and methodInfo
- Publication number
- WO2001041100A9 WO2001041100A9 PCT/US2000/042017 US0042017W WO0141100A9 WO 2001041100 A9 WO2001041100 A9 WO 2001041100A9 US 0042017 W US0042017 W US 0042017W WO 0141100 A9 WO0141100 A9 WO 0141100A9
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hardware
- equipment
- interactive
- software
- piece
- Prior art date
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Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
Definitions
- the present invention relates generally to electronic tutoring systems and methods, and more particularly, to an interactive computer-based training (ICBT) system and method operable over an Internet Protocol (IP)-based public computer network such as the Internet, a corporate Intranet, and the like.
- IP Internet Protocol
- CBT Computer-based training
- the existing CBT solutions are not without drawbacks of their own.
- courseware designed for CBT sessions is typically provided to be self-paced, flexibility in selecting different lessons or re-arranging the order of lessons plans is rather limited.
- the courseware is typically built around a pre- arranged set of lessons, the user cannot go from one lesson to another without first completing a previously-required lesson plan. Accordingly, such lack of flexibility renders the current CBT schemes a poor choice for effectively presenting "real-world" training with a self-paced multi-path flow.
- these solutions do not provide a scheme for evaluating the amount of training each individual end-user (e.g., a technician) needs in order to bring the individual up to a predetermined level of proficiency.
- the present invention is directed to an interactive computer-based training (ICBT) system operable over a computer network for training users.
- ICBT interactive computer-based training
- the ICBT system comprises a hardware simulator
- a state machine engine for emulating one or more hardware states associated with a piece of equipment on which the users are to receive interactive training.
- a software simulator that is inter-dependent on the hardware simulator for accurately emulating the software functionality of the equipment.
- the software simulator is provided as a command inference engine that allows the users to interactively interrogate the emulated equipment for its software functionality commands.
- One or more independently selectable learning modules each including one or more lesson plans related to the hardware and software functionality of the emulated piece of equipment, are also included.
- the learning modules are provided to be inter-dependently associated with the hardware and software simulators of the equipment.
- a user interface is included for selecting one or more learning modules in addition to effectuating inputs from the users to change the hardware and software configurations and simulators of the equipment.
- the present invention is directed to an interactive CBT method for training users on equipment having hardware and software functionality.
- the method provides for simulating the hardware and software functionality of the equipment by employing inter-dependent state machines wherein state transitions are based on tracking prior dependencies and drawing inferences therefrom.
- One or more independently selectable learning modules are provided in the method, wherein each module includes lesson plans related to the hardware and software functionalities of the equipment.
- Inputs are provided by the users to effectuate different hardware and software configurations of the equipment. Thereafter, configuration-dependent learning modules may be selected based on the different hardware and software configurations.
- FIG. 1 (Prior Art) depicts a flow diagram of an exemplary conventional
- FIG. 2 depicts a functional block diagram of a presently preferred exemplary embodiment of an on-line interactive CBT (ICBT) system provided in accordance with the teachings of the present invention
- FIG. 3 is a functional block diagram illustrating the inter-dependent modular architecture of the ICBT system of the present invention
- FIG. 4 depicts a presently preferred exemplary embodiment of the interdependent modular ICBT system
- FIG ⁇ 5 depicts a state transition scheme used in implementing a simulator engine for emulating hardware and software components of a device for which an
- FIG. 6 is a flow diagram of the state transition scheme of the present invention.
- FIG. 7 illustrates a presently preferred exemplary embodiment of a state transition diagram for use with an ICBT system implemented for a router device
- FIG. 8 is a flow diagram of a test-taking process provided in the ICBT system of the present invention.
- FIG. 9 depicts a flow diagram of an ICBT session using an adaptive- learning troubleshooting module provided in accordance with the teachings of the present invention.
- FIGS. 10A through ION are exemplary screen shots of a presently preferred ICBT system implemented for a router.
- FIG. 11 is an exemplary screen shot of a presently preferred ICBT system implemented for a switch.
- FIG. 1 depicted therein is a simplified flow diagram of an exemplary conventional CBT method for presenting selected courseware to an end-user.
- the conventional CBT method is generally provided as a series of discrete lesson plans with a pre-defined order, i.e., a beginning, middle and an end.
- a method typically displays a series of user interface screens for sequentially presenting the lesson plans to the end-user, for example, a field dispatch technician or an employee trainee at a facility.
- the entire courseware may comprise a predetermined number of lessons or lesson plans, and the end-user cannot typically change the order of the lessons being presented. Accordingly, upon starting or accessing the CBT courseware (step 102), the end-user goes through taking the lesson plans in the order they are presented (steps 104 through 108), until a determination is made as to whether the end-user wants to continue with any additional lessons (decision block 110). If so, the additional lesson plan or plans may then be presented (step 112) for the end-user's benefit. On the other hand, should the end-user decide to quit the CBT session, option to deactivate and/or finish the session is generally available (step 114).
- FIG, 2 depicts a functional block diagram of a presently preferred exemplary embodiment of an on-line interactive CBT (ICBT) or Web-bascd training (WBT) system 200 provided in accordance with the teachings of the present invention.
- the courseware of the ICBT system 200 is provided as part of a server-based multimedia application package 206 running on one or more servers, for example, server 204, that are connected to a computer network 202 such as the Internet, Intranet, et cetera.
- a client computer 208 e.g., a laptop computer and the like
- a graphic user interface 210 provided with the client computer 208 aids the end- user for interacting with the courseware 206.
- the end-user who may be a field technician working at a remote site, can access the courseware on-line and obtain interactive tutoring or training bn a piece of equipment that the end-user is dispatched to install, repair, maintain, or troubleshoot a service call at the remote site.
- inter-dependent modular architecture for facilitating maximum user flexibility.
- both hardware and software functionality of the equipment for which the courseware is designed are modeled as inter-dependent state machines that allow transitions via multiple paths based on state dependency and reference value inferences.
- the courseware is preferably provided as an interdependent ( collection of various hardware and software lesson plans, test/quiz sessions, troubleshooting menus, on-line help modules, and multimedia presentations (e.g., video clips, photographs, et cetera), wherein the end-user is capable of selecting any lesson plan at will or executing only a portion of a training session at any point in the courseware depending upon the need.
- a hardware simulator 302 is provided for emulating the hardware functionality of a component or device.
- a state machine engine forms the basis for the hardware simulator 302 wherein the sub-components of the device are characterized and the states in which the device may exist, based upon the conditions of the sub-components, are defined. For example, various connectors, switches, cables, input/output (I/O) port configurations, power-on conditions, et cetera, of a device are abstracted and assigned logic values based on their states or conditions such as ON, OFF, specific values, connections made or not made, et cetera.
- a software simulator 304 is provided for emulating the software functionality, or a subset thereof, of the device.
- a suitable inter-dependent state machine engine also forms the basis for the device software simulator 304.
- the various states of the hardware and software state machine engines are provided to be inter-dependent and, accordingly, affect the respective state transitions appropriately in order to emulate the device functionality substantially accurately and completely.
- One or more learning modules 306 are provided as part of the ICBT system, preferably including a plurality of self-contained multimedia lesson plans, on-line help screens, troubleshooting modules, test/quiz portions, appropriate technology background information, glossaries, et cetera.
- the components of the learning modules are organized in reference to the various hardware and software portions of the abstracted device and are appropriately associated with the hardware and software simulators of the ICBT system.
- a graphic user interface 210 facilitates the end-user to access and interact with the various modules of the ICBT system. Using the interface 210, the end- user can manipulate the various abstracted sub-components of the hardware simulator 302 as part of a lesson plan.
- the end-user may turn on or off various switches, make connections, turn on power to the device, et cetera, by effectuating an appropriate pointing device (e.g., a mouse) on the icons of the interface 210.
- an appropriate pointing device e.g., a mouse
- various software commands for the device may be entered through a software command interface portion of the user interface 210.
- the user interface 210 preferably comprises appropriate display windows or dialog boxes to help the end-user navigate through the various multimedia teaching/training aids, testing and evaluation modules, etc.
- FIG. 4 depicted therein is a presently preferred exemplary embodiment of the inter-dependent modular architecture 400 of an ICBT system provided in accordance with the teachings of the present invention.
- the end-user can independently interact with a tutorial or lesson plan module 404, a hardware simulator 406, a software simulator 408, a reference module 410, or a troubleshooting module 412.
- the hardware and software simulators of the modular architecture 400 are underpinned by their respective state machine engines.
- the hardware simulator 406 is associated with its lesson module 420 and the state machine engine 418.
- the software simulator 408 is also associated with its lesson module 416 and a command inference engine 414 provided as the software state machine.
- the reference module 410 is also provided to be independently accessible to the end-user and is preferably coupled to the troubleshooting module
- a problem identification module 422 preferably maintains a personal profile for the end-user and provides a list of most common causes of a particular error or problem encountered.
- the list may include "Top 10" causes for the end-user with respect to a specific problem, thereby narrowing and personalizing the problem identification process.
- the personalized problem identification process provided herein substantially expedites the troubleshooting tasks and, accordingly, reduces equipment downtime in the field.
- FIG. 5 depicts a state transition scheme 500 used in implementing a simulator engine for emulating hardware and software components of a device.
- state transitions are provided to. be inter-dependent upon previous states and the conditions thereat. Further, such inter-dependency may extend beyond the states that are immediately prior to a current state.
- state transitions are preferably based upon tracking the dependencies not only with respect to the immediately prior states, but also their previous dependencies as well.
- the dependencies may be direct or indirect, based upon whether a logic condition associated with a state is alterable regardless of a previous state's condition, although a specific value of the previous state's condition may be necessary for a more realistic simulation. It should be readily appreciated by those of ordinary skill in the art upon reference hereto that such a "multi-level" inter-dependency scheme in a state machine provides for a robust and fine-grained behavioral model of the device being emulated.
- a current state 502 is shown to have dependencies on a plurality of states that are immediately prior to it, for example, state 504-1 through state 504-L. These dependencies may be referred to as the first-order dependencies with respect to the current state 502. Also, the immediately prior states may likewise be denoted as the first-order states. As exemplified in this FIG, the first-order dependencies may comprise both direct (e.g., dependency path 508) and indirect (e.g., dependency path 510) dependencies.
- first-order previous state 504-1 is, in turn, exemplified with a direct dependency path 522 (a second-order direct dependency with respect to the current state 502) as well as an indirect dependency path 524 (a second- order indirect dependency for the current state 502).
- the current state 502 may transition into any of the first-order next stales, for example, state 514-1 through state 5I4-K, based upon tracking the dependencies as set forth above. Also, the logic conditions of a next state may give rise to a direct as well as an indirect dependency path to another, second- order, next state. For example, the first-order next state 514-2 generates a direct dependency path 518 to a second-order next state 516-1 and an indirect dependency path 520 to another second-order next state 516-2.
- an Artificial Intelligence (AI)-based inference engine is used for keeping track of the state logics, dependencies and allowable transitions in the state machines of the present invention.
- FIG. 6 depicts a flow diagram of the state transition scheme 500 described hereinabove.
- the inference engine determines its dependent state or states and characterizes the dependencies thereof (step 604).
- one or more reference values associated with the state (or its logic parameters) are inferred (step 606).
- the reference values may comprise a set: ⁇ NULL; 0; or a specific value ⁇ .
- the values of the references may then be used, in one exemplary embodiment, for determining state transitions (i.e., future states) of the hardware or software state machine's present state.
- FIG. 7 illustrates a presently preferred exemplary embodiment of a state transition diagram for use with an ICBT system implemented for a router device.
- STATE 1 (POWER CORD) 702 The Power Cord state is true if the power cord of the router is plugged into the device; otherwise it is false.
- the end-user activates the Power Cord state by mouse-dragging a suitable cord icon from a supplies list provided with the GUI to the AC power port of the device. No prior dependencies are provided for this state.
- the power switch of the device is preferably provided as a toggle switch between ON and OFF positions selectable by mouse-clicks. The end-user activates this state by mouse-clicking on the final dependency of the foregoing two states of the router device (i.e., the order of activating the power switch or the power cord of the device is irrelevant for the purpose of activating State 2).
- State 2 it is dependent on State 1 being true. However, if the power is not plugged in, the switch can still be turned ON or OFF, regardless of the power cord connection. Accordingly, State 2 has an indirect first-order dependency on State 1.
- STATE 3 (CONSOLE CONNECTOR) 706 The Console Connector state is true if the console connector wire is plugged into the console connector ⁇ ort >f the router device; otherwise it is false. The end-user activates this state by mouse-dragging the console cable connector icon from the supplies list to the console port of the device. No dependencies are provided for the Console Connector state 706.
- STATE 4 (SERIAL CONNECTOR) 708 The Serial Connector state is true if the serial connector wire is plugged into the serial connector port of the router device; otherwise it is false. The end-user effectuates this state by mouse-dragging the serial connector cable icon from the supplies list to the serial connector port of the device. Again, no dependencies are provided for the Serial Connector state 708.
- STATE 5 (TERMINAL "BOOT” SCREEN) 710.
- the Terminal "Boot” Screen state is true if the power switch is in the ON position, the power cord is plugged in, and the console connector is connected. The end-user activates this state by mouse-clicking on the final dependency of the three foregoing states of the router device (i.e., the activation order of the previous states does not matter).
- the Terminal "Boot” Screen is then displayed when the state is true (in the software emulator). When the hardware emulator of the device is being viewed, a green blinking connection light comes on when the state is true. For State 5 to be true, it is dependent on State 1, State 2 and State 3 being true.
- State 5 has a direct dependency on State 1, State 2 and State 3.
- STATE 6 (POWER LIGHT ON) 712 The Power Light ON state is true if the power switch is in the ON position and the power cord is plugged in; otherwise it is false. The end-user verifies this state by mouse-clicking on the final dependency of the forgoing two states of the router device. When the device hardware emulator is being viewed, a green POWER light comes on when the state is true.
- State 6 For State 6 to be true, it is dependent on State 1 being true and State 2 being true. If the power cord is not plugged in, the power switch can be toggled between the ON and OFF positions, but no light comes on. Thus, State 6 has a direct dependency on State 1 and State 2.
- State 7 it is dependent on State 1, State 2 and State 4 being true. If the power cord is not plugged in, the power switch can still be toggled between the ON and OFF positions, but no serial connection light comes on. Also, if the power cord is in, the power switch is ON and the serial cable is not connected, the serial connection light does not come on. Finally, if the power cord is in, the power switch is OFF and the serial cable is connected, again the serial light does not come on. Thus, State 7 has a direct dependency on State 1, State 2 and State 4.
- STATE 8 (TERMINAL “NO CONNECTION” SCREEN) 716: The Terminal "No Connection" Screen state is true if either the power switch is in the OFF position, the power cord is not plugged in, or the console connector is not connected to the console port of the device. When the state is true, the Terminal "No Connection” Screen is displayed in the software emulator. mouse-clicking the power switch of the device produces a blinking light.
- State 8 it is dependent on either State i being false, State 2 being false, or State 3 being false. If the power cord is not plugged in, the power switch can still be toggled between the ON and OFF positions, and the "No Connection" Screen remains visible. If the power cord is in, the power switch is ON and the console cable is not plugged in, the No Connection" Screen remains visible again. Finally, when the power cord is in, the power switch is OFF, and the console cable is plugged in, the "No Connection” Screen still remains visible. Thus, State 8 has an indirect dependency on each of State 1, State 2 and State 3 being false, or any combination thereof.
- the hardware state model 700 described above is used for building inferences about the different states of the router hardware and software, and appropriate lesson plans and troubleshooting modules related to the state- dependent behavior of the router device. Because whether a particular software command or lesson plan can be simulated or presented, either in the field or in a "virtual" classroom, may be dependent upon a specific combination of the hardware states of the device, the end-user is guided through appropriate hardware setup and configuration before such software simulations or lesson plans may be effectuated. Furthermore, when any errors arise during an ICBT session, invoking suitable troubleshooting module or modules is also dependent upon the behavior of hardware and software states.
- FIG. 8 depicts a flow diagram of an exemplary test-taking process or evaluation session provided as part of the ICBT system of the present invention.
- the ICBT simulator system may be launched from a remote computer (i.e., a client) that is connected via the Internet Intranet to the server on which the system is executed.
- a remote computer i.e., a client
- the Internet Intranet to the server on which the system is executed.
- any known or hitherto unknown browser tools operable with IP-based networks may be used for accessing the server site via a suitable protocol, for example, the well-known HyperText Transfer Protocol (HTTP).
- HTTP HyperText Transfer Protocol
- the end-user is authorized to launch the ICBT simulator system (step 802) which may be optimized for a particular piece of equipment such as, for example, a network element (i.e., a router, brouter, or a bridge, et cetera).
- a network element i.e., a router, brouter, or a bridge, et cetera
- the end-user may activate one or more portions of the interface to initiate an ICBT session (step 804).
- the end-user can take a quiz on a particular topic related to the simulated equipment (step 806).
- a "real-time" assessment of the quiz is done so that if the end-user fails the quiz (decision block 808), a menu of options may be presented from which the end-user can select a suitable option (step 810).
- the option menu may include a link to an appropriate lesson plan, a relevant multimedia presentation (if available), or an option to re-take the quiz.
- the end-user may continue with other ICBT sessions (step 812) or may conclude the testing session.
- the end-user can elect to take additional lesson plans, launch related multimedia presentations, query on-line help modules, etc.
- FIG. 9 depicted therein is a flow diagram of an adaptive troubleshooting session provided in the ICBT system of the present invention.
- the end-user after launching the ICBT simulator system (step 902) and activating the user interface (step 904) as described hereinabove, the end-user initializes and configures the device in accordance with a lesson plan, learning module, etc. Thereafter, the end-user enters a command for effectuating a hardware, software, or firmware function of the emulated device. If an error is reported by the command inference engine of the ICBT simulator (decision 906), the end-user may activate an appropriate troubleshooting module (step 910).
- the troubleshooting module maintains a personal profile for the end-user in terms of the end-user's prior configuration installation settings, command usage, prior errors and causes therefor, et cetera, in a historical database. Based on this "intelligence," a list of most common causes that are likely to have caused the particular error is returned by the ICBT system (step 912). If the actual cause of the error is not on the list, a learning routine in the troubleshooting module is activated (step 914) so that the "new" cause is added to the personal profile of the end-user when the problem is subsequently identified and solved (step 916).
- the personal profile of the end-user is adaptively updated, thereby reducing the time associated with troubleshooting in the field.
- the end-user has the option of continuing with the ICBT session is any appropriate manner, including session termination (step 908).
- FIGS. 10A through ION depict exemplary screen shots of a presently preferred ICBT system implemented for a router device.
- FIG. I I is an exemplary screen shot of a presently preferred ICBT system implemented for a network switch. It is believed that the contents of the these exemplary screen shots are self- explanatory and, accordingly, only some of the salient features are described in greater detail hereinbelow.
- FIG. 10A illustrates an initial GUI screen 1000 for router installation.
- a main menu bar 1002 includes a plurality of icons exemplifying the inter-dependent modular architecture of the present invention.
- An INTRODUCTION icon 1006, HARDWARE icon 1008, SOFTWARE icon 1010, TROUBLE SHOOTING icon 1012, REFERENCE icon 1014 and a HELP icon 1016 are provided.
- An EXIT option 1038 allows the end-user to de-activate and or terminate an ICBT session. As is well- known, the end-user can click on any of the main options by pointing an appropriate input device (e.g., a mouse) on one of several icons of the main menu bar 1002.
- a main display area 1036 may initially preferably illustrate a router 1004.
- appropriate company logos, equipment manufacturer's identification, markings and/or logos, 3-D animated presentations, et cetera may also be included to enhance the interactive experience of the ICBT system.
- FIG. 10B illustrates a screen shot 1001 associated with the INTRODUCTION icon 1006.
- the main display area 1036 preferably includes a text portion 1018 for presenting appropriate technology background information on routers.
- a plurality of graphics areas, e.g., graphics areas 1020 A through 1020C, are also provided to visually enhance the background information on the device being emulated.
- FIG. 10C illustrates a hardware emulator screen shot 1003 associated with the HARDWARE icon 1008.
- a plurality of lesson plans are provided as a pull-down option menu 1022.
- FIG. 10D depicts a screen shot 1.005 that is generated when one of these lesson plans is activated.
- the lesson plan screen shot 1005 preferably includes a multimedia-enhanced device book portion 1028 which shows text information 1030 relating to the hardware plan selected, a graphics image 1032 for the relevant hardware component, and a video clip 1034 therefor.
- AJso shown in the main display area 1036 is a hardware components area 1024 wherein an appropriate supplies list, e.g., connectors, cables, ports, straps, etc. are "iconized" for selection by the end-user.
- the router 1004 is rotatable by manipulating a ROTATE arrow icon 1026 so that both the front- and back-sides of the router may be examined and used for appropriately connecting the several cables and connectors provided therewith.
- FIG. 10E illustrates another exemplary hardware lesson screen shot 1007 for making the network connections, that is, for emulating the router connections within a network.
- FIG. 10F exemplifies a terminal emulator screen shot 1009 which shows a pull-down menu 1040 for selecting from a plurality of software lessons.
- FIG. 10G provides a software command reference screen shot 1011.
- the commands are preferably grouped in a COMMAND CATEGORIES list 1042.
- a scrollable dialog box 1044 provides the relevant commands that are selected from the command category.
- Another scrollable dialog box 1046 provides the use, syntax and format of a particular command.
- a reference manual is provided as a device book 1048, having the contents therein organized into several topics 1052, and is preferably provided to be activatable from the hardware emulator as exemplified in FIG. IOC.
- FIG. 101 illustrates a screen shot 1015 for power cable reference, with a graphics image 1050 therefor.
- FIG. 10J illustrates a screen shot 1017 for providing reference to the chassis, with a video clip 1054.
- Reference to the power switch of the router is exemplified in the screen shot 1019 depicted in FIG. 10K.
- Reference to a ground strap used by technicians while working on routers is exemplified in the screen shot 1021 shown in FIG. 10L.
- FIG 10M illustrates a screen shot 1023 for an exemplary quiz plan.
- An on-line glossary screen 1025 is illustrated in FIG. ION.
- the terms and acronyms included in the glossary are provided in a scrollable dialog box provided in the main display area 1036 of the GUI.
- the GUI of the router simulator system described above is provided to be more "icon-rich,” a different "look and feel" is provided for the exemplary GUI screen shot 1100 of a presently preferred network switch simulator shown in FIG. 11.
- the underlying interdependent ijhodular architecture that integrates hardware and software state transition schemes, lesson plans, troubleshooting modules is essentially similar to the router simulator architecture, except for the necessary and appropriate switch- specific modifications.
- the modular ICBT system of the present invention may be provided for any piece of equipment that can be characterized in discrete states and components, and the "look and feel" of the user interface may be as variable as a particular implementation may allow or require.
- the present invention advantageously provides a highly interactive CBT system that overcomes the deficiencies and shortcomings of the prior art in terms of ease of use, flexibility, and more "real-life" training necessary for effective job performance. Because the ICBT system of the present invention may be accessed via a computer network on a 24-hour/seven-days-a-week basis as needed, no travel time or expense is needed to provide high quality training to a distributed work force.
- the equipment simulators of the ICBT system can be used as a reference tool as well as a training tool, thereby reducing or obviating the need for a centralized technical support staff.
- a suitable Web-based framing format virtually an unlimited number of technicians can be trained at the same time at their own job stations, each taking only those sections or lesson plans suited to his or her current training session.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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IL14953900A IL149539A0 (en) | 1999-11-09 | 2000-11-09 | Interactive computer-based training system and method |
BR0015456-3A BR0015456A (en) | 1999-11-09 | 2000-11-09 | Interactive computer-based training system and method |
CA002391306A CA2391306A1 (en) | 1999-11-09 | 2000-11-09 | Interactive computer-based training system and method |
AU47064/01A AU4706401A (en) | 1999-11-09 | 2000-11-09 | Interactive computer-based training system and method |
EP00992789A EP1238383A4 (en) | 1999-11-09 | 2000-11-09 | Interactive computer-based training system and method |
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US09/436,147 | 1999-11-09 | ||
US09/436,147 US6371765B1 (en) | 1999-11-09 | 1999-11-09 | Interactive computer-based training system and method |
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WO2001041100A2 WO2001041100A2 (en) | 2001-06-07 |
WO2001041100A3 WO2001041100A3 (en) | 2001-10-25 |
WO2001041100A9 true WO2001041100A9 (en) | 2002-08-08 |
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PCT/US2000/042017 WO2001041100A2 (en) | 1999-11-09 | 2000-11-09 | Interactive computer-based training system and method |
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CA (1) | CA2391306A1 (en) |
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