779:... Functional analysis, as an expository and explanatory tool is a convenient way for dealing systematically with relations among such parts as well as with the role that each part plays in relation to the whole. The organization as a system and the various subsystems within can be conceived as having needs (functional requirements). Any structural part is said to have a function when it contributes to the fulfilment of a need. On the other hand, when the effects of the part hinder this fulfilment one speaks of dysfunctional consequences or of the part as dysfunctional with respect to the above need. From the above it becomes evident that a certain part or social pattern can have both functional and dysfunctional consequences for different needs of the system.... (
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grouped into logical sets. They will normally fall into a hierarchical pattern, so the next step is to arrange them that way. The principal activity being modeled is labeled A0. A basic rule is that an activity cannot be further broken down (or "decomposed" as the systems analysts say) into more than six activities. Thus, the AO activity (or "Node") can be broken down into A1 through A6; Likewise, A1 can be broken down into A 11 through A16, etc. (Of course, an activity need not be broken down into 6 activities if fewer such activities are adequate). The activity described by an action verb with a subject. A listing of activities in hierarchical order is called a Node Tree. It is this Node Tree which serves as the building block for the model.
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mechanics, can be used to generate an output which is an equally correct description of the output which the actual system would have given for the input concerned. It may also be noted that there are two other things which a functional model may do, but which are not necessary to all functional models. Thus such a system may, but need not, describe the system throughputs other than at the input and output, and it may also contain a description of the operation which each element carries out on the throughput, but once again this is not
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one control. This control provides the required rules, performance criteria, and evaluation data by which the activity accomplishes its mission. In other words, the control serves as the executive. By convention, if an item is both an input and a control, it is only shown as a control. Thus, every activity must have a control and an output, but need not have an input. The controls are shown entering the activity box from the top.
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is a composition of processes having remote states definitions.... Specifying processes could be difficult for the designer unfamiliar with formal methods. Tools supporting functional model elaboration have been designed in the process calculus community. For instance, based on scenarios specified as
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Each activity generally has information input into it and output from it. The activity changes the input information into the output information. By convention, the inputs are shown entering the activity box from the left and the output exiting the box to the right. Every activity must have at least
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must thus achieve two aims in order to be of use. It must furnish a throughput description mechanics capable of completely defining the first and last throughput states, and perhaps some of the intervening states. It must also offer some means by which any input, correctly described in terms of this
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If an organization desired to be ideally functional along this dimension, it would give people the widest latitude in choosing the form of their routine interactions and activities so that socially satisfying routines could emerge along with informal group leadership. Once these routines had emerged
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The next step is preparation of the data. This is done by listing all the activities which are required to accomplish the activity being modeled. Personal knowledge, information from experts, consultation with reference material, etc. are all sources of this information. The activities are then
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The first step in constructing any model is to define the system. This is done by declaring what activity will be modeled. - For example, an 'activity. "Conduct an FMS Program" can be modeled provided the boundaries and restrictions of the system are specified. Thus, the purpose, viewpoint, and
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During the 1970s, the U.S. Air Force
Program for Integrated Computer Aided Manufacturing (ICAM) sought to increase manufacturing productivity through systematic application of computer technology. The ICAM program identified the need for better analysis and communication techniques for people
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An important aspect of this ICAM definition is, that it implicitly acknowledged that in the modelling for information systems development different kind of models can be used to model a systems. This idea is formalized by John
Zachman in his framework, and in other Enterprise Architecture
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This seems one of the first times that the term "functional model" is used in an (electrical) engineering context. In the 1960s the term "function model" is used more often in texts about physics or about mathematics. The term "functional model" is more often used in social science
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is essentially a graphical technique for representing the activities (or functions) of the system... which the manager deems important... This model deals with inter-reationships between activities and does not take into account the time required to accomplish the activity.
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In addition to definition of the IDEF0 language, the IDEF0 methodology also prescribes procedures and techniques for developing and interpreting models, including ones for data gathering, diagram construction, review cycles and documentation.
704:, its potential for perversion becomes apparent. Such an unidimensional system could provide a very "groupy group" but one without direction and with a control over members that would result in stultifying conformity rather than self growth.
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Activities can accomplish their mission through the application of physical processes and equipment, called mechanisms. If it is useful to indicate the mechanisms on the model, they are shown entering the activity box from the bottom.
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More general, in the 1960s the term "Functional model" seem to have appeared in a range of social sciences from physiology, biology, anthropology, sociology, to economics, political science, and cultural studies, see
785:.... we admit that human relations students have pro-managerial values and that such values have determined the problems studied (how to increase productivity) and the conceptual framework used (narrow scope,
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It had previously been considered impossible to make a Gyro-Compass of the size the Navy required. But new techniques, including the application of electronics, enabled our engineers to have a satisfactory
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In 1983, the U.S. Air Force
Integrated Information Support System program enhanced the IDEF1 information modeling technique to form IDEF1X (IDEF1 Extended), a semantic data modeling technique
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involved in improving manufacturing productivity. As a result, the ICAM program developed a series of techniques known as the IDEF (ICAM Definition) techniques which included the following:
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is not what Christ accomplished on our behalf, but how Christ did it. Of cardinal importance is not the content on the objective level, but the effect on the subjective and social level.
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The reason is, that those charts are no examples of early functional modelling, while there are other examples of early activity models which would be more appropriate to mention. --
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It is comprehensive and expressive, capable of graphically representing a wide variety of business, manufacturing and other types of enterprise operations to any level of detail.
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discussed earlier might lead us to anticipate, that institutions which are apparently economic may also, and perhaps more importantly, serve other ends besides utilitarian ones
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The following section gives a listing of quotes, and sources, which could be used to further improve this article. This first set of quotes is arranged chronologically:
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It can be generated by a variety of computer graphics tools; numerous commercial products specifically support development and analysis of IDEF0 diagrams and models.
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IDEF1, used to produce an "information model". An information model represents the structure and semantics of information within the modeled system or subject area.
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In this 1968 organizational theory textbook the term "functional model" (might) refer to the functional analysis toolset, a tool from the systems approach toolbox.
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is proposed for the analysis and design of the way companies determine what is going to be produced. This model is a set of functions with their interrelations.
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IDEF2, used to produce a "dynamics model". A dynamics model represents the time-varying behavioral characteristics of the modeled system or subject area.
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It enhances communication between systems analysts, developers and users through ease of learning and its emphasis on hierarchical exposition of detail.
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For now I have just collected the above quotes, which are a indication of how the term emerged in different fields, and with different meaning --
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With the development of IDEF0 and similar modelling languages, the function model perspective is developed into a functional modeling language.
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It is a coherent and simple language, providing for rigorous and precise expression, and promoting consistency of usage and interpretation.
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It is well-tested and proven, through many years of use in Air Force and other government development projects, and by private industry.
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When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.
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When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.
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Even more general, in the TU Delft library collection catalogue the term "function model" occurred 216 times in book titles, see
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of
Progressive Myelin-reflex Maturation (leading Toward Beginning Cognitive Function) During the First Six Months of Life
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Taken into account that the number of scientific publications has grown exponentially as well, one could still say:
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is a structured representation of the functions, activities or processes within the modeled system or subject area.
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In this early text the term "functional model" is used meaning "working model", and not "graphical representation".
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related articles on
Knowledge. If you would like to participate, please visit the project page, where you can join
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sequence, diagrams or message sequence charts, FSP expressions could be generated to assist the architect.
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both in the domain of the technical sciences (systems and software engineering) as in the social sciences
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If you have discovered URLs which were erroneously considered dead by the bot, you can report them with
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The
University of Amsterdam library gives 39,075 and 12,448 results in book and article titles, see
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https://web.archive.org/web/20081217005338/http://human.space.edu/old/docs/Systems_Eng_Handbook.pdf
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before doing mass systematic removals. This message is updated dynamically through the template
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1301:(1861–1919), who designed his chart around the years 1910-1915 and popularized it in the West.
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Research in Design and
Development of a Functional Model of the Human Nonauditory Labyrinths
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https://web.archive.org/web/20070927203501/http://www.dau.mil/pubs/pdf/SEFGuide%2001-01.pdf
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https://web.archive.org/web/20070927203501/http://www.dau.mil/pubs/pdf/SEFGuide%2001-01.pdf
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1022:. Draft Federal Information. Processing Standards Publication 183. December 21. 1993.
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In this fragment about organization theory the term "functional model" here refers to "
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If you found an error with any archives or the URLs themselves, you can fix them with
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If you found an error with any archives or the URLs themselves, you can fix them with
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Requested articles/Applied arts and sciences/Computer science, computing, and
Internet
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https://web.archive.org/web/20061220024049/http://mason.gmu.edu/~tdufresn/paper.doc
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http://connection.ebscohost.com/c/proceedings/17530521/harmonogram-karol-adamiecki
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Announcing the
Standard for Integrative Definition for Functional Modeling (IDEF0)
1184:. Vol 32 (3), Aerospace Medical Research Laboratories. ,Zoeken in een bibliotheek
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they would be left strictly alone. Once again, as soon as we state this ideally
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1594:. No special action is required regarding these talk page notices, other than
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This quote stipulates a "functional model" in some social anthropology theory.
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A Functional Model of Memory Based on
Physiological and Verbal Learning Data
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Laurence R. Young, Jacob L. Meiry, Joel S. Newman, James E. Feather (1969)
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Other Cultures: Aims, Methods and Achievements in Social Anthropology
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Robert W. Grubbström, H. H. Hinterhuber, Janerik Lundquist (1991)
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The following text has been removed from the history section:
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the term has become more popular every decade since the 1960s,
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in the banner shell. Please resolve this conflict if possible.
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This article has been given a rating which conflicts with the
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Find pictures for the biographies of computer scientists (see
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Organisations and Bureaucracy: An Analysis of Modern Theories
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1145:. University of Cambridge, Department of Applied Economics,
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is – a systematic way to describe a system’s functionality
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for additional information. I made the following changes:
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for additional information. I made the following changes:
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Quality of Software Architectures Models and Architectures
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Steffen Becker, Frantisek Plasil, Ralf H. Reussner (2008)
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http://human.space.edu/old/docs/Systems_Eng_Handbook.pdf
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Production economics: issues and challenges for the 90's
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Integrative Definition for Functional Modeling (IDEF0)
85:, a collaborative effort to improve the coverage of
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1488:using the archive tool instructions below. Editors
1069:language, IDEF0 has the following characteristics:
197:Computer science articles needing expert attention
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1198:, and the term "functional model" 131 times, see
1134:. For example in titles of books, and articles:
659:Quotes about function models and functional model
1466:http://www.dau.mil/pubs/pdf/SEFGuide%2001-01.pdf
1456:http://www.dau.mil/pubs/pdf/SEFGuide%2001-01.pdf
1276:History section: text about Gantt charts removed
710:The changing of organizational behavior patterns
684:" LIFE, April 17, 1944 - Vol. 16, nr. 16. p. 105
1584:This message was posted before February 2018.
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1030:IDEF0, used to produce a "function model". A
337:WikiProject Computer science/Unreferenced BLPs
907:Source: Major Robert E. Schafrik (ca. 1982) "
8:
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1338:, New York, 1910; republished as
1243:1988 To 1999Â : (10,301) - (3,213)
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460:Knowledge:WikiProject Systems
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793:their statement as false. (
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1551:Hello fellow Wikipedians,
1505:(last update: 5 June 2024)
1421:Hello fellow Wikipedians,
1383:The Management of Projects
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758:It will appear also, as
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357:and sub-categories with
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136:Things you can help
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775:
774:
773:
770:
755:
754:
753:
752:
748:
729:
728:
724:
723:
722:
721:
714:
696:
695:
691:
690:
689:
688:
685:
669:
668:
660:
657:
642:
641:
630:
619:
608:
597:
570:
563:
556:
549:
536:
533:
530:
529:
526:
525:
522:
521:
514:
504:
503:
492:
486:
485:
478:
472:
471:
469:
439:
438:
422:
410:
409:
398:
386:
385:
382:
381:
378:
377:
374:
373:
371:
370:
368:
367:
350:
342:
340:
339:
333:
323:
321:
320:
314:
304:
302:
301:
296:
288:
278:
276:
275:
269:
259:
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256:
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238:
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231:
221:
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200:
199:
194:
188:
178:
176:
175:
169:
157:
155:
154:
142:
141:
129:
128:
121:Low-importance
117:
111:
110:
108:
91:the discussion
77:
65:
64:
62:Low‑importance
56:
44:
43:
37:
26:
13:
10:
9:
6:
4:
3:
2:
1713:
1702:
1699:
1697:
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1692:
1689:
1687:
1684:
1682:
1679:
1677:
1674:
1672:
1669:
1667:
1664:
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1654:
1653:
1648:
1643:
1642:
1631:
1627:
1624:
1620:
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1618:
1611:
1605:
1601:
1597:
1593:
1587:
1582:
1577:
1573:
1569:
1568:
1567:
1565:
1561:
1557:
1552:
1546:
1544:
1543:
1538:
1533:
1532:
1521:
1517:
1514:
1510:
1509:
1508:
1501:
1495:
1491:
1487:
1483:
1477:
1472:
1467:
1463:
1459:
1457:
1453:
1449:
1447:
1443:
1439:
1438:
1437:
1435:
1431:
1427:
1422:
1416:
1414:
1413:
1409:
1405:
1395:
1391:
1390:0-7277-2593-9
1388:
1384:
1378:
1375:
1372:
1368:
1367:0-9804599-0-7
1365:
1361:
1355:
1352:
1348:
1347:0-87960-048-9
1345:
1341:
1337:
1333:
1327:
1324:
1321:
1316:
1313:
1306:
1305:
1302:
1300:
1296:
1292:
1288:
1283:
1282:
1281:
1275:
1273:
1272:
1268:
1264:
1256:
1253:
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1251:
1245:
1242:
1239:
1236:
1233:
1232:
1231:
1229:
1226:
1219:
1216:
1213:
1210:
1207:
1204:
1203:
1202:
1200:
1197:
1190:
1186:
1183:
1179:
1177:
1175:
1169:
1166:
1164:
1158:
1155:
1153:
1147:
1144:
1143:
1140:A Production
1137:
1136:
1135:
1133:
1124:
1122:
1120:
1116:
1112:
1104:
1097:
1094:
1093:
1090:
1089:
1083:
1080:
1077:
1074:
1071:
1070:
1068:
1064:
1063:
1057:
1052:
1049:
1048:
1046:
1045:
1039:
1036:
1033:
1029:
1028:
1025:
1024:
1023:
1021:
1018:IFIPS (1993)
1013:
1010:
1004:
999:
995:
990:
986:
981:
977:
972:
965:
960:
953:
948:
941:
940:
927:
922:
921:
918:
914:
913:
912:
910:
903:
900:
893:
889:
888:
886:
883:
882:
878:
877:
871:
867:
866:
863:
859:
858:
854:
853:
847:
843:
842:
840:
836:
835:
829:
825:
824:
822:
818:
817:
813:
812:
806:
803:
799:
798:
796:
792:
788:
782:
778:
777:
771:
768:
764:
763:
761:
757:
756:
749:
746:
742:
739:
738:
735:
731:
730:
726:
725:
719:
715:
712:
711:
706:
705:
703:
698:
697:
693:
692:
686:
683:
679:
678:
676:
671:
670:
666:
665:
664:
658:
656:
655:
651:
647:
639:
635:
631:
628:
624:
620:
617:
613:
609:
606:
602:
598:
595:
591:
587:
583:
579:
575:
571:
568:
564:
561:
557:
554:
550:
547:
543:
539:
538:
534:
519:
510:
506:
505:
501:
497:
491:
488:
487:
483:
477:
474:
473:
470:
453:
449:
445:
444:
436:
425:
423:
420:
416:
415:
411:
402:
399:
396:
392:
363:
356:
352:
351:
349:
347:
343:
338:
335:
334:
332:
330:
329:
324:
319:
316:
315:
313:
311:
310:
305:
300:
297:
294:
290:
289:
287:
285:
284:
279:
274:
271:
270:
268:
266:
265:
260:
255:
252:
251:
249:
247:
246:
241:
236:
233:
232:
230:
228:
227:
222:
217:
214:
213:
211:
209:
208:
203:
198:
195:
193:
190:
189:
187:
185:
184:
179:
174:
171:
170:
168:
166:
165:
160:
159:
156:
152:
148:
147:
144:
143:
139:
135:
134:
130:
126:
122:
116:
113:
112:
109:
92:
88:
84:
83:
78:
75:
71:
70:
66:
60:
57:
54:
50:
45:
41:
35:
27:
23:
18:
17:
1638:
1635:
1610:source check
1589:
1583:
1580:
1553:
1550:
1528:
1525:
1500:source check
1479:
1473:
1470:
1423:
1420:
1401:
1382:
1377:
1359:
1354:
1339:
1335:
1331:
1330:H.L. Gantt,
1326:
1315:
1284:
1279:
1260:
1249:
1223:
1194:
1188:
1181:
1173:
1171:
1162:
1160:
1151:
1149:
1141:
1139:
1128:
1125:More general
1108:
1066:
1031:
1019:
1017:
1011:
916:
906:
901:
884:
869:
861:
845:
838:
827:
820:
801:
790:
786:
766:
759:
744:
733:
708:
701:
674:
662:
643:
495:
441:
345:
344:
328:Unreferenced
326:
325:
307:
306:
281:
280:
262:
261:
243:
242:
224:
223:
205:
204:
181:
180:
162:
161:
120:
80:
40:WikiProjects
1307:References:
1299:Henry Gantt
1287:Gantt chart
1056:view models
969:Example (1)
638:Gantt Chart
1660:Categories
1647:Report bug
1537:Report bug
1163:Functional
795:p. 170-171
1630:this tool
1623:this tool
1520:this tool
1513:this tool
596:articles.
216:Computing
1636:Cheers.—
1526:Cheers.—
1295:the West
942:p. 32-33
830:. p. 344
791:a priori
769:. p. 183
713:. p. 215
640:article.
632:In this
629:article.
621:In this
618:article.
610:In this
607:article.
599:In this
582:N2 Chart
572:In this
565:In this
558:In this
551:In this
548:article.
540:In this
264:Maintain
207:Copyedit
1560:my edit
1430:my edit
848:. p. 42
747:. p. 23
743:(1962)
498:on the
457:Systems
448:systems
404:C‑class
401:Systems
245:Infobox
183:Cleanup
123:on the
30:B-class
1014:(1993)
872:. p.62
751:texts.
592:, and
226:Expand
36:scale.
1095:p. vi
1065:As a
923:p. 29
879:2010s
855:2000s
814:1990s
781:p. 58
727:1960s
694:1950s
667:1940s
590:IDEF0
309:Stubs
283:Photo
140:with:
1408:talk
1387:ISBN
1364:ISBN
1344:ISBN
1267:talk
1227:and
1161:The
1132:here
1115:talk
915:The
783:)
650:talk
634:edit
623:edit
612:edit
605:HIPO
601:edit
574:edit
567:edit
560:edit
553:edit
542:edit
490:High
450:and
1604:RfC
1574:to
1494:RfC
1464:to
1454:to
1444:to
1404:Mdd
1263:Mdd
1261:--
1111:Mdd
1050:p.v
646:Mdd
644:--
115:Low
1662::
1617:.
1612:}}
1608:{{
1507:.
1502:}}
1498:{{
1410:)
1392:,
1369:,
1269:)
1172:A
1117:)
911:"
860:A
797:)
732:A
652:)
588:,
584:,
580:,
365:}}
359:{{
1649:)
1645:(
1632:.
1625:.
1539:)
1535:(
1522:.
1515:.
1406:(
1349:.
1265:(
1113:(
1058:.
894:"
804:.
720:"
680:"
648:(
520:.
502:.
476:C
454:.
348::
331::
312::
295:)
286::
267::
248::
229::
210::
186::
167::
127:.
42::
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