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Finite & Deterministic Discrete Event System Specification

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3829:) can be determined by when ?push occurs. Fig. 4. illustrates the case ?push happens at time 40 and the toaster changes into (T, 20, 0). From that time, 20 seconds later when its status becomes (T, 20, 20), the toaster gets back to (Wait, inf, 0) where we don't know when it gets back to "Toast" again. Fig. 4. shows the case that ?push occurs at time 90 so the toaster get into (T,20,0). Notice that even though there someone push again at time 97, that status (T, 20, 7) doesn't change at all because 2263: 3743: 155: 191: 33: 3865: 3198: 3738:
becomes 0 again. However, since Player B sends back the ball to Player A 0.1 second later, Player A gets back to (Send, 0.1 0) at time 0.2. From that time, 0.1 seconds later when Player A's status becomes (Send, 0.1, 0.1), Player A sends back the ball to Player B and gets into (Wait, inf, 0). Thus,
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Consider a toaster in which there are two slots that have their own start knobs as shown in Fig. 2(a). Each slot has the identical functionality except their toasting time. Initially, the knob is not pushed, but if one pushes the knob, the associated slot starts toasting for its toasting time: 20
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One can model it with FD-DEVS as shown in Fig. 2(b). Two slots are modeled as atomic FD-DEVS whose input event is "?push" and output event is "!pop", states are "Idle" (I) and "Toast" (T) with the initial state is "idle". When it is "Idle" and receives "?push" (because one pushes the knob), its
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To make a complete ping-pong match, one player starts as an offender whose initial state is "Send" and the other starts as a defender whose initial state is "Wait". Thus in Fig. 1. Player A is the initial offender and Player B is the initial defender. In addition, to make the game continue, each
178:. Once the player gets into "Send", it will generates "!send" and go back to "Wait" after the sending time which is 0.1 time unit. When staying at "Wait" and if it gets "?receive", it changes into "Send" again. In other words, the player model stays at "Wait" forever unless it gets "?receive". 3877:
The property of non-negative rational-valued lifespans which can be preserved or changed by input events along with finite numbers of states and events guarantees that the behavior of FD-DEVS networks can be abstracted as an equivalent finite-vertex reachability graph by abstracting the
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of FD-DEVS are deterministic can be seen as somehow a limitation to model the system that has non-deterministic behaviors. For example, if a player of the ping-pong game shown in Fig. 1. has a stochastic lifespan at "Send" state, FD-DEVS doesn't capture the non-determinism effectively.
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where the schedule is always preserved by any input events. Due to this relaxation there is no longer OPNA problem, but there is also one limitation that a time-line abstraction which can be used for abstracting elapsed times of SP-DEVS networks is no longer useful for FD-DEVS network
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Fig. 4. shows an event segment (top) and the associated state trajectory (bottom) of the left slot of the two-slot toaster introduced in Fig. 2. Like Fig.3, the status of the left slot is described as (state, lifespan, elapsed
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Fig. 3. shows an event segment (top) and the associated state trajectory (bottom) of Player A who plays the ping-pong game introduced in Fig. 1. In Fig. 3. the status of Player A is described as (state, lifespan, elapsed
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seconds for the left slot, 40 seconds for the right slot. After the toasting time, each slot and its knobs pop up. Notice that even though one tries to push a knob when its associated slot is toasting, nothing happens.
2359: 1742: 1365: 996: 299: 585: 3343: 4121:. Each directed arch shows how its source vertex changes into the destination vertex along with an associated event and a set of reset models. For example, the transition arc (6) to (5) is triggered by 821: 4669:, "eUDEVS: Executable UML with DEVS Theory of Modeling and Simulation", SIMULATION, Transaction of The Society for Modeling and Simulation International, Volume 85, No. 11-12, 2009, pp. 750–777, 4426: 4381: 475: 3630:) and the line segment of the bottom of Fig. 3. denotes the value of the elapsed time. Since the initial state of Player A is "Send" and its lifetime is 0.1 seconds, the height of (Send, 0.1, 2724: 4503: 4245: 4660: 4548: 3193:{\displaystyle \delta _{ext}(s,t_{s},t_{e},x)={\begin{cases}(s',t_{s}-t_{e})&{\text{if }}\delta _{x}(s,x)=(s',0)\\(s',\tau (s'))&{\text{if }}\delta _{x}(s,x)=(s',1)\\\end{cases}}} 104:
and designed to support verification analysis of its networks which had been an open problem of DEVS formalism for 30 years. In addition, it was also designated to resolve the so-called "
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Fig. 5. shows the reachability graph of two-slot toaster which was shown in Fig. 2. In the reachability graph, each vertex has its own discrete state and time zone which are ranges of
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state changes to "Toast". In other words, it stays at "Idle" forever unless it receives "?push" event. 20 (res. 40) seconds later the left (res. right) slot returns to "Idle".
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For standardization of DEVS, especially using FDDEVS, Dr. Saurabh Mittal together with co-workers has worked on defining of XML format of FDDEVS. We can find an article at
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As a qualitative property, safety of a FD-DEVS network is decidable by (1) generating RG of the given network and (2) checking whether some bad states are reachable or not
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https://ieeexplore.ieee.org/document/5071137/;jsessionid=6E63EA120D0510F93D51D6C18728D31C?isnumber=5153598&arnumber=5071137&count=19&index=7
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Consider a single ping-pong match in which there are two players. Each player can be modeled by FD-DEVS such that the player model has an input event
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in both simulation and verification ways. FD-DEVS also provides modular and hierarchical modeling features which have been inherited from Classic
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As mentioned above, FD-DEVS is an relaxation of SP-DEVS. That means, FD-DEVS is a supper class of SP-DEVS. We would give a model of FD-DEVS of a
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As a qualitative property, liveness of a FD-DEVS network is decidable by (1) generating RG of the given network, (2) from RG, generating kernel
902:. The output and internal transition function defines how a state generates an output event, at the same time, how the state changes internally. 2561: 2278: 1661: 1284: 915: 527: 47: 774: 4688: 3256: 591:
which defines how an input event changes the schedule as well as a state of the system. The internal schedule of a state
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which was invented by Prof. D. Dill can be applicable to obtain a finite-vertex reachability graph for FD-DEVS networks.
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infinitely-many values of the elapsed times using the time abstracting technique introduced by Prof. D. Dill
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M.H. Hwang, "Generating Finite-State Global Behavior of Reconfigurable Automation Systems: DEVS Approach",
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The formal representation of the player in the ping-pong example shown in Fig. 1 can be given as follows.
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is reset by 0 when transition (6) to (5) occurs. For more detailed information, the reader can refer to
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that support some reachability graph-based verification algorithms for finding safeness and liveness.
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The formal representation of the slot of Two-slot Toaster Fig. 2(a) and (b) can be given as follows.
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player's "?send" event should be coupled to the other player's "?receive" as shown in Fig. 1.
4565: 3990: 1497: 1128: 4128: 2894: 2476:{\displaystyle {\mathcal {M}}=<X,Y,S',s_{0}',ta,\delta _{ext},\delta _{int},\lambda >} 594: 4596:
Proceedings of the Workshop on Computer Aided Verification Methods for Finite State Systems
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this cyclic state transitions which move "Send" to "Wait" back and forth will go forever.
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D.L. Dill, "Timing Assumptions and Verification of Finite-State Concurrent Systems", In
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event. At that time, the set {1} of the arc denotes that elapsed time of 1 (that is
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the lifespan of a state can be scheduled by a rational number or infinity, and
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Fig. 2: (a) Two-slot toaster (b) FD-DEVS coupled diagram for two-slot toaster
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the internal schedule can be either preserved or updated by an input event.
3987:. For example, for node (6) of Fig. 5, discrete state information is ((E, 2647:{\displaystyle S'=\{(s,t_{s}):s\in S,t_{s}\in \mathbb {T} ^{\infty }\}} 2262: 4196: 3742: 4637:, "A Reachable Graph of Finite and Deterministic DEVS Networks", 4274: 2354:{\displaystyle M=<X,Y,S,s_{0},\tau ,\delta _{x},\delta _{y}>} 1737:{\displaystyle M=<X,Y,S,s_{0},\tau ,\delta _{x},\delta _{y}>} 1360:{\displaystyle M=<X,Y,S,s_{0},\tau ,\delta _{x},\delta _{y}>} 991:{\displaystyle M=<X,Y,S,s_{0},\tau ,\delta _{x},\delta _{y}>} 294:{\displaystyle M=<X,Y,S,s_{0},\tau ,\delta _{x},\delta _{y}>} 154: 190: 1655: 131: 109: 580:{\displaystyle \delta _{x}:S\times X\rightarrow S\times \{0,1\}} 4665:
José L. Risco-Martín, Jesús M. de la Cruz, Saurabh Mittal and
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FD-DEVS was originally named as "Schedule-Controllable DEVS"
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Fig. 4. an Event Segment and a State Trajectory of a Toaster
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The third restriction can be also seen as a relaxation from
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Fig. 3. an Event Segment and a State Trajectory of Player A
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is the set of non-negative rational numbers plus infinity.
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For details of DEVS behavior, the readers can refer to
4289:. This standard XML format was used for UML execution 4568: 4511: 4472: 4445: 4389: 4339: 4312: 4261:
There are two open source libraries DEVS# written in
4207: 4131: 4013: 3993: 3947: 3901: 3835: 3808: 3762: 3717: 3690: 3663: 3636: 3590: 3513: 3465: 3415: 3351: 3338:{\displaystyle \delta _{int}(s,t_{s})=(s',\tau (s'))} 3259: 3209: 2926: 2897: 2847: 2784: 2734: 2661: 2564: 2542: 2518: 2492: 2370: 2281: 2233: 2206: 2179: 2152: 2132: 2105: 2078: 2051: 2031: 2004: 1977: 1957: 1937: 1917: 1897: 1877: 1857: 1837: 1810: 1790: 1770: 1750: 1664: 1628: 1601: 1574: 1547: 1520: 1500: 1480: 1460: 1433: 1413: 1393: 1373: 1287: 1259: 1232: 1205: 1178: 1151: 1131: 1111: 1091: 1064: 1044: 1024: 1004: 918: 878: 833: 777: 716: 657: 623: 597: 530: 487: 430: 391: 365: 339: 313: 221: 4641:, pp48–56, Huntsville, Alabama, USA, (Available at 4619:, pp57–65, Huntsville, Alabama, USA, (Available at 1646:
Formal Representation of Crosswalk Light Controller
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may be too technical for most readers to understand
4574: 4542: 4497: 4458: 4421:{\displaystyle \delta _{x}:S\times X\rightarrow S} 4420: 4376:{\displaystyle \rho :S\times X\rightarrow \{0,1\}} 4375: 4325: 4287:http://www.duniptechnologies.com/research/xfddevs/ 4239: 4147: 4113: 3999: 3979: 3933: 3848: 3821: 3794: 3730: 3703: 3676: 3649: 3622: 3561: 3499: 3451: 3399: 3337: 3245: 3192: 2909: 2883: 2831: 2770: 2718: 2646: 2548: 2528: 2504: 2475: 2353: 2246: 2219: 2192: 2165: 2138: 2118: 2091: 2064: 2037: 2017: 1990: 1963: 1943: 1923: 1903: 1883: 1863: 1843: 1823: 1796: 1776: 1756: 1736: 1634: 1614: 1587: 1560: 1533: 1506: 1486: 1466: 1446: 1419: 1399: 1379: 1359: 1265: 1245: 1218: 1191: 1164: 1137: 1117: 1097: 1077: 1050: 1030: 1010: 990: 890: 864: 815: 761: 702: 643: 609: 579: 514: 470:{\displaystyle \tau :S\rightarrow \mathbb {Q} _{}} 469: 410: 371: 345: 319: 293: 158:Fig. 1: FD-DEVS coupled diagram for ping-pong game 4671:http://sim.sagepub.com/content/85/11-12/750.short 4197:Weak Expressiveness for describing nondeterminism 1474:(T)=20 for the left slot, 40 for the right slot, 4713: 4605:, Edmonton, Canada, Aug. 1-2, 2005(Available at 4498:{\displaystyle \lambda :S\rightarrow Y^{\phi }} 4201:The features that all characteristic functions, 3868:Fig. 5. Reachability Graph of Two-slot Toaster 2257: 4683:(second ed.). Academic Press, New York. 4240:{\displaystyle \tau ,\delta _{x},\delta _{y}} 481:which defines the lifespan of a state where 4703:: CS1 maint: multiple names: authors list ( 4543:{\displaystyle \delta _{int}:S\rightarrow S} 4370: 4358: 4267:http://xsy-csharp.sourceforge.net/DEVSsharp/ 2641: 2576: 859: 853: 574: 562: 4172: 2719:{\displaystyle s_{0}'=(s_{0},\tau (s_{0}))} 825:the output and internal transition function 3711:is reset by 0, Player A doesn't know when 3684:. After changing into (Wait, inf, 0) when 4679:, Tag Gon Kim, Herbert Praehofer (2000). 4280: 4161: 2631: 1277:Formal Representation of One Slot Toaster 908:Formal Representation of Ping-Pong Player 865:{\displaystyle Y^{\phi }=Y\cup \{\phi \}} 490: 445: 70:Learn how and when to remove this message 54:, without removing the technical details. 3863: 3741: 2261: 1085:=Send for Player A, Wait for Player B; 189: 153: 120:finiteness of event sets and state set, 14: 4714: 3873:Applicability of Time-Zone Abstraction 3562:{\displaystyle \delta _{y}(s)=(y,s').} 3400:{\displaystyle \delta _{y}(s)=(y,s').} 138:. But another time abstraction method 3890: 762:{\displaystyle \delta _{x}(s)=(s',0)} 703:{\displaystyle \delta _{x}(s)=(s',1)} 52:make it understandable to non-experts 4598:, pp 197–212, Grenoble, France, 1989 211: 26: 4466:can be divided into two functions: 4333:can be divided into two functions: 4256: 3500:{\displaystyle \lambda (s,t_{s})=y} 185: 24: 4639:Proceedings of 2006 DEVS Symposium 4617:Proceedings of 2006 DEVS Symposium 4569: 3994: 2832:{\displaystyle ta(s,t_{s})=t_{s}.} 2636: 2521: 2373: 1501: 1132: 504: 459: 25: 4733: 4681:Theory of Modeling and Simulation 206: 149: 116:, FD-DEVS has three restrictions 4275:https://code.google.com/p/x-s-y/ 4191: 589:the external transition function 112:. From the viewpoint of Classic 31: 3657:) is 0.1 which is the value of 3452:{\displaystyle (s,t_{s})\in S'} 3246:{\displaystyle (s,t_{s})\in S'} 2884:{\displaystyle (s,t_{s})\in S'} 2771:{\displaystyle (s,t_{s})\in S'} 515:{\displaystyle \mathbb {Q} _{}} 4556: 4534: 4482: 4434: 4412: 4355: 4301: 3579:Behavior of Ping-Pong Player A 3553: 3536: 3530: 3524: 3488: 3469: 3435: 3416: 3391: 3374: 3368: 3362: 3332: 3329: 3318: 3301: 3295: 3276: 3229: 3210: 3180: 3163: 3157: 3145: 3125: 3122: 3111: 3094: 3087: 3070: 3064: 3052: 3032: 2995: 2981: 2943: 2867: 2848: 2810: 2791: 2754: 2735: 2713: 2710: 2697: 2678: 2598: 2579: 2529:{\displaystyle {\mathcal {M}}} 2271:FD-DEVS is a sub-class of DEVS 794: 756: 739: 733: 727: 697: 680: 674: 668: 638: 627: 553: 507: 495: 462: 450: 440: 87:discrete event dynamic systems 13: 1: 4603:Proceedings of 2005 IEEE-CASE 4588: 3980:{\displaystyle t_{e1}-t_{e2}} 3934:{\displaystyle t_{e1},t_{e2}} 3859: 3795:{\displaystyle s,t_{s},t_{e}} 3623:{\displaystyle s,t_{s},t_{e}} 891:{\displaystyle \phi \notin Y} 769:), the schedule is preserved. 355:a finite set of output events 4643:http://www.acims.arizona.edu 4621:http://www.acims.arizona.edu 4295: 4183:strongly connected component 4181:(KDAG) in which a vertex is 4007:),(T,40)), and time zone is 329:a finite set of input events 7: 4459:{\displaystyle \delta _{y}} 4326:{\displaystyle \delta _{x}} 3849:{\displaystyle \delta _{x}} 2258:Behaviors of FD-DEVS Models 2247:{\displaystyle \delta _{y}} 2220:{\displaystyle \delta _{y}} 2193:{\displaystyle \delta _{y}} 2166:{\displaystyle \delta _{y}} 2119:{\displaystyle \delta _{y}} 2092:{\displaystyle \delta _{y}} 2065:{\displaystyle \delta _{y}} 2018:{\displaystyle \delta _{x}} 1991:{\displaystyle \delta _{x}} 1804:={BG, BW, G, GR, R, W, D}; 1784:={!g:0, !g:1, !w:0, !w:1}; 1615:{\displaystyle \delta _{y}} 1588:{\displaystyle \delta _{y}} 1561:{\displaystyle \delta _{x}} 1534:{\displaystyle \delta _{x}} 1246:{\displaystyle \delta _{y}} 1219:{\displaystyle \delta _{y}} 1192:{\displaystyle \delta _{x}} 1165:{\displaystyle \delta _{x}} 144: 10: 4738: 1652:crosswalk light controller 1199:(Send,?receive)=(Send,0); 1172:(Wait,?receive)=(Send,1), 411:{\displaystyle s_{0}\in S} 96: 2536:are the same as those of 644:{\displaystyle \tau (s')} 479:the time advance function 170:, and it has two states: 4173:Decidability of Liveness 4575:{\displaystyle \infty } 4251: 4000:{\displaystyle \infty } 3574:Behavior of Atomic DEVS 1507:{\displaystyle \infty } 1138:{\displaystyle \infty } 4722:Automata (computation) 4576: 4544: 4499: 4460: 4422: 4377: 4327: 4281:For Simulation via XML 4241: 4179:directed acyclic graph 4162:Decidability of Safety 4149: 4148:{\displaystyle t_{e1}} 4115: 4001: 3981: 3935: 3869: 3850: 3823: 3796: 3747: 3732: 3705: 3678: 3651: 3624: 3563: 3501: 3453: 3401: 3339: 3247: 3194: 2911: 2910:{\displaystyle x\in X} 2885: 2833: 2772: 2720: 2648: 2550: 2530: 2506: 2477: 2355: 2267: 2248: 2221: 2194: 2167: 2140: 2120: 2093: 2066: 2039: 2019: 1992: 1965: 1945: 1925: 1905: 1885: 1865: 1845: 1825: 1798: 1778: 1758: 1738: 1636: 1616: 1589: 1562: 1535: 1508: 1488: 1468: 1448: 1421: 1401: 1381: 1361: 1267: 1247: 1226:(Send)=(!send, Wait), 1220: 1193: 1166: 1139: 1119: 1099: 1079: 1052: 1032: 1012: 992: 905: 892: 866: 817: 763: 704: 645: 611: 610:{\displaystyle s\in S} 581: 516: 471: 412: 381:a finite set of states 373: 347: 321: 295: 195: 159: 4577: 4545: 4500: 4461: 4423: 4378: 4328: 4242: 4150: 4116: 4002: 3982: 3936: 3867: 3851: 3824: 3822:{\displaystyle t_{e}} 3797: 3751:Behavior of a Toaster 3745: 3733: 3731:{\displaystyle t_{e}} 3706: 3704:{\displaystyle t_{e}} 3679: 3677:{\displaystyle t_{s}} 3652: 3650:{\displaystyle t_{e}} 3625: 3564: 3502: 3454: 3402: 3340: 3248: 3195: 2912: 2886: 2834: 2773: 2721: 2649: 2551: 2531: 2507: 2478: 2356: 2265: 2249: 2222: 2195: 2168: 2141: 2139:{\displaystyle \phi } 2121: 2094: 2067: 2040: 2038:{\displaystyle \neq } 2020: 1993: 1966: 1964:{\displaystyle \tau } 1946: 1944:{\displaystyle \tau } 1926: 1924:{\displaystyle \tau } 1906: 1904:{\displaystyle \tau } 1886: 1884:{\displaystyle \tau } 1866: 1864:{\displaystyle \tau } 1846: 1844:{\displaystyle \tau } 1826: 1824:{\displaystyle s_{0}} 1799: 1779: 1759: 1739: 1637: 1635:{\displaystyle \phi } 1617: 1590: 1563: 1536: 1509: 1489: 1487:{\displaystyle \tau } 1469: 1467:{\displaystyle \tau } 1449: 1447:{\displaystyle s_{0}} 1422: 1402: 1382: 1362: 1268: 1266:{\displaystyle \phi } 1248: 1221: 1194: 1167: 1140: 1120: 1118:{\displaystyle \tau } 1100: 1098:{\displaystyle \tau } 1080: 1078:{\displaystyle s_{0}} 1053: 1033: 1013: 993: 893: 867: 818: 764: 705: 646: 612: 582: 517: 472: 413: 374: 348: 322: 305: 296: 193: 157: 4566: 4562:inf in Fig 3. means 4509: 4470: 4443: 4387: 4337: 4310: 4205: 4129: 4011: 3991: 3945: 3899: 3833: 3806: 3760: 3715: 3688: 3661: 3634: 3588: 3511: 3463: 3413: 3349: 3257: 3207: 2924: 2895: 2845: 2782: 2732: 2659: 2562: 2540: 2516: 2490: 2368: 2279: 2231: 2204: 2177: 2150: 2130: 2103: 2076: 2049: 2029: 2002: 1975: 1955: 1935: 1915: 1895: 1875: 1855: 1835: 1808: 1788: 1768: 1748: 1662: 1626: 1599: 1572: 1545: 1518: 1498: 1478: 1458: 1431: 1411: 1391: 1371: 1285: 1257: 1230: 1203: 1176: 1149: 1129: 1109: 1089: 1062: 1042: 1022: 1002: 916: 876: 831: 775: 714: 655: 621: 595: 528: 485: 428: 389: 363: 337: 311: 219: 166:and an output event 4269:and XSY written in 2891:and an input event 2674: 2505:{\displaystyle X,Y} 2416: 1658:in this Knowledge. 4648:2012-07-26 at the 4626:2012-07-26 at the 4572: 4540: 4495: 4456: 4418: 4373: 4323: 4237: 4145: 4111: 3997: 3977: 3931: 3891:Reachability Graph 3870: 3846: 3819: 3792: 3748: 3728: 3701: 3674: 3647: 3620: 3559: 3497: 3449: 3397: 3335: 3243: 3190: 3185: 2907: 2881: 2829: 2768: 2716: 2662: 2644: 2546: 2526: 2502: 2473: 2404: 2351: 2268: 2244: 2217: 2190: 2163: 2136: 2116: 2089: 2062: 2035: 2025:(s,?p)=(s,0) if s 2015: 1988: 1961: 1941: 1921: 1901: 1881: 1861: 1841: 1821: 1794: 1774: 1754: 1734: 1654:which is used for 1632: 1612: 1585: 1558: 1541:(I, ?push)=(T,1), 1531: 1504: 1484: 1464: 1444: 1417: 1397: 1377: 1357: 1263: 1243: 1216: 1189: 1162: 1135: 1115: 1095: 1075: 1048: 1028: 1008: 988: 888: 862: 813: 759: 710:, otherwise(i.e., 700: 641: 607: 577: 512: 467: 408: 369: 343: 317: 291: 196: 160: 4690:978-0-12-778455-7 4611:M. H. Hwang and 3856:(T,?push)=(T,1). 3133: 3040: 2549:{\displaystyle M} 2275:A FD-DEVS model, 2072:(BG)=(!g:1, BW), 1797:{\displaystyle S} 1777:{\displaystyle Y} 1757:{\displaystyle X} 1568:(T,?push)=(T,0); 1420:{\displaystyle S} 1400:{\displaystyle Y} 1380:{\displaystyle X} 1051:{\displaystyle S} 1031:{\displaystyle Y} 1011:{\displaystyle X} 420:the initial state 372:{\displaystyle S} 346:{\displaystyle Y} 320:{\displaystyle X} 212:Formal Definition 80: 79: 72: 16:(Redirected from 4729: 4708: 4702: 4694: 4633:M. H. Hwang and 4583: 4581: 4579: 4578: 4573: 4560: 4554: 4549: 4547: 4546: 4541: 4527: 4526: 4504: 4502: 4501: 4496: 4494: 4493: 4465: 4463: 4462: 4457: 4455: 4454: 4438: 4432: 4427: 4425: 4424: 4419: 4399: 4398: 4382: 4380: 4379: 4374: 4332: 4330: 4329: 4324: 4322: 4321: 4305: 4257:For Verification 4246: 4244: 4243: 4238: 4236: 4235: 4223: 4222: 4154: 4152: 4151: 4146: 4144: 4143: 4120: 4118: 4117: 4112: 4104: 4103: 4091: 4090: 4060: 4059: 4032: 4031: 4006: 4004: 4003: 3998: 3986: 3984: 3983: 3978: 3976: 3975: 3960: 3959: 3940: 3938: 3937: 3932: 3930: 3929: 3914: 3913: 3855: 3853: 3852: 3847: 3845: 3844: 3828: 3826: 3825: 3820: 3818: 3817: 3801: 3799: 3798: 3793: 3791: 3790: 3778: 3777: 3737: 3735: 3734: 3729: 3727: 3726: 3710: 3708: 3707: 3702: 3700: 3699: 3683: 3681: 3680: 3675: 3673: 3672: 3656: 3654: 3653: 3648: 3646: 3645: 3629: 3627: 3626: 3621: 3619: 3618: 3606: 3605: 3568: 3566: 3565: 3560: 3552: 3523: 3522: 3506: 3504: 3503: 3498: 3487: 3486: 3458: 3456: 3455: 3450: 3448: 3434: 3433: 3406: 3404: 3403: 3398: 3390: 3361: 3360: 3344: 3342: 3341: 3336: 3328: 3311: 3294: 3293: 3275: 3274: 3252: 3250: 3249: 3244: 3242: 3228: 3227: 3199: 3197: 3196: 3191: 3189: 3188: 3173: 3144: 3143: 3134: 3131: 3121: 3104: 3080: 3051: 3050: 3041: 3038: 3031: 3030: 3018: 3017: 3005: 2974: 2973: 2961: 2960: 2942: 2941: 2916: 2914: 2913: 2908: 2890: 2888: 2887: 2882: 2880: 2866: 2865: 2838: 2836: 2835: 2830: 2825: 2824: 2809: 2808: 2777: 2775: 2774: 2769: 2767: 2753: 2752: 2725: 2723: 2722: 2717: 2709: 2708: 2690: 2689: 2670: 2653: 2651: 2650: 2645: 2640: 2639: 2634: 2625: 2624: 2597: 2596: 2572: 2555: 2553: 2552: 2547: 2535: 2533: 2532: 2527: 2525: 2524: 2511: 2509: 2508: 2503: 2482: 2480: 2479: 2474: 2463: 2462: 2444: 2443: 2412: 2400: 2377: 2376: 2360: 2358: 2357: 2352: 2347: 2346: 2334: 2333: 2315: 2314: 2253: 2251: 2250: 2245: 2243: 2242: 2226: 2224: 2223: 2218: 2216: 2215: 2199: 2197: 2196: 2191: 2189: 2188: 2173:(GR)=(!g:0, R), 2172: 2170: 2169: 2164: 2162: 2161: 2145: 2143: 2142: 2137: 2125: 2123: 2122: 2117: 2115: 2114: 2098: 2096: 2095: 2090: 2088: 2087: 2071: 2069: 2068: 2063: 2061: 2060: 2044: 2042: 2041: 2036: 2024: 2022: 2021: 2016: 2014: 2013: 1997: 1995: 1994: 1989: 1987: 1986: 1970: 1968: 1967: 1962: 1950: 1948: 1947: 1942: 1930: 1928: 1927: 1922: 1910: 1908: 1907: 1902: 1890: 1888: 1887: 1882: 1870: 1868: 1867: 1862: 1850: 1848: 1847: 1842: 1830: 1828: 1827: 1822: 1820: 1819: 1803: 1801: 1800: 1795: 1783: 1781: 1780: 1775: 1763: 1761: 1760: 1755: 1743: 1741: 1740: 1735: 1730: 1729: 1717: 1716: 1698: 1697: 1641: 1639: 1638: 1633: 1621: 1619: 1618: 1613: 1611: 1610: 1594: 1592: 1591: 1586: 1584: 1583: 1567: 1565: 1564: 1559: 1557: 1556: 1540: 1538: 1537: 1532: 1530: 1529: 1513: 1511: 1510: 1505: 1493: 1491: 1490: 1485: 1473: 1471: 1470: 1465: 1453: 1451: 1450: 1445: 1443: 1442: 1426: 1424: 1423: 1418: 1406: 1404: 1403: 1398: 1386: 1384: 1383: 1378: 1366: 1364: 1363: 1358: 1353: 1352: 1340: 1339: 1321: 1320: 1272: 1270: 1269: 1264: 1252: 1250: 1249: 1244: 1242: 1241: 1225: 1223: 1222: 1217: 1215: 1214: 1198: 1196: 1195: 1190: 1188: 1187: 1171: 1169: 1168: 1163: 1161: 1160: 1144: 1142: 1141: 1136: 1124: 1122: 1121: 1116: 1104: 1102: 1101: 1096: 1084: 1082: 1081: 1076: 1074: 1073: 1057: 1055: 1054: 1049: 1037: 1035: 1034: 1029: 1017: 1015: 1014: 1009: 997: 995: 994: 989: 984: 983: 971: 970: 952: 951: 900:the silent event 897: 895: 894: 889: 871: 869: 868: 863: 843: 842: 822: 820: 819: 814: 806: 805: 787: 786: 768: 766: 765: 760: 749: 726: 725: 709: 707: 706: 701: 690: 667: 666: 650: 648: 647: 642: 637: 616: 614: 613: 608: 586: 584: 583: 578: 540: 539: 521: 519: 518: 513: 511: 510: 493: 476: 474: 473: 468: 466: 465: 448: 417: 415: 414: 409: 401: 400: 378: 376: 375: 370: 352: 350: 349: 344: 326: 324: 323: 318: 300: 298: 297: 292: 287: 286: 274: 273: 255: 254: 186:Two-slot toaster 75: 68: 64: 61: 55: 35: 34: 27: 21: 4737: 4736: 4732: 4731: 4730: 4728: 4727: 4726: 4712: 4711: 4696: 4695: 4691: 4677:Bernard Zeigler 4667:Bernard Zeigler 4657:Bernard Zeigler 4655:M.H. Hwang and 4650:Wayback Machine 4635:Bernard Zeigler 4628:Wayback Machine 4613:Bernard Zeigler 4591: 4586: 4567: 4564: 4563: 4561: 4557: 4516: 4512: 4510: 4507: 4506: 4489: 4485: 4471: 4468: 4467: 4450: 4446: 4444: 4441: 4440: 4439: 4435: 4394: 4390: 4388: 4385: 4384: 4338: 4335: 4334: 4317: 4313: 4311: 4308: 4307: 4306: 4302: 4298: 4283: 4259: 4254: 4231: 4227: 4218: 4214: 4206: 4203: 4202: 4199: 4194: 4175: 4164: 4136: 4132: 4130: 4127: 4126: 4099: 4095: 4083: 4079: 4052: 4048: 4024: 4020: 4012: 4009: 4008: 3992: 3989: 3988: 3968: 3964: 3952: 3948: 3946: 3943: 3942: 3922: 3918: 3906: 3902: 3900: 3897: 3896: 3893: 3875: 3862: 3840: 3836: 3834: 3831: 3830: 3813: 3809: 3807: 3804: 3803: 3786: 3782: 3773: 3769: 3761: 3758: 3757: 3722: 3718: 3716: 3713: 3712: 3695: 3691: 3689: 3686: 3685: 3668: 3664: 3662: 3659: 3658: 3641: 3637: 3635: 3632: 3631: 3614: 3610: 3601: 3597: 3589: 3586: 3585: 3545: 3518: 3514: 3512: 3509: 3508: 3482: 3478: 3464: 3461: 3460: 3441: 3429: 3425: 3414: 3411: 3410: 3383: 3356: 3352: 3350: 3347: 3346: 3321: 3304: 3289: 3285: 3264: 3260: 3258: 3255: 3254: 3235: 3223: 3219: 3208: 3205: 3204: 3184: 3183: 3166: 3139: 3135: 3130: 3128: 3114: 3097: 3091: 3090: 3073: 3046: 3042: 3037: 3035: 3026: 3022: 3013: 3009: 2998: 2988: 2987: 2969: 2965: 2956: 2952: 2931: 2927: 2925: 2922: 2921: 2896: 2893: 2892: 2873: 2861: 2857: 2846: 2843: 2842: 2820: 2816: 2804: 2800: 2783: 2780: 2779: 2760: 2748: 2744: 2733: 2730: 2729: 2704: 2700: 2685: 2681: 2666: 2660: 2657: 2656: 2635: 2630: 2629: 2620: 2616: 2592: 2588: 2565: 2563: 2560: 2559: 2541: 2538: 2537: 2520: 2519: 2517: 2514: 2513: 2491: 2488: 2487: 2452: 2448: 2433: 2429: 2408: 2393: 2372: 2371: 2369: 2366: 2365: 2342: 2338: 2329: 2325: 2310: 2306: 2280: 2277: 2276: 2260: 2254:(D)=(!g:1, G); 2238: 2234: 2232: 2229: 2228: 2227:(W)=(!w:0, D), 2211: 2207: 2205: 2202: 2201: 2200:(R)=(!w:1, W), 2184: 2180: 2178: 2175: 2174: 2157: 2153: 2151: 2148: 2147: 2131: 2128: 2127: 2110: 2106: 2104: 2101: 2100: 2099:(BW)=(!w:0, G), 2083: 2079: 2077: 2074: 2073: 2056: 2052: 2050: 2047: 2046: 2030: 2027: 2026: 2009: 2005: 2003: 2000: 1999: 1998:(G,?p)=(GR,0), 1982: 1978: 1976: 1973: 1972: 1956: 1953: 1952: 1936: 1933: 1932: 1916: 1913: 1912: 1896: 1893: 1892: 1876: 1873: 1872: 1856: 1853: 1852: 1836: 1833: 1832: 1815: 1811: 1809: 1806: 1805: 1789: 1786: 1785: 1769: 1766: 1765: 1749: 1746: 1745: 1725: 1721: 1712: 1708: 1693: 1689: 1663: 1660: 1659: 1627: 1624: 1623: 1606: 1602: 1600: 1597: 1596: 1595:(T)=(!pop, I), 1579: 1575: 1573: 1570: 1569: 1552: 1548: 1546: 1543: 1542: 1525: 1521: 1519: 1516: 1515: 1499: 1496: 1495: 1479: 1476: 1475: 1459: 1456: 1455: 1438: 1434: 1432: 1429: 1428: 1412: 1409: 1408: 1392: 1389: 1388: 1372: 1369: 1368: 1348: 1344: 1335: 1331: 1316: 1312: 1286: 1283: 1282: 1258: 1255: 1254: 1237: 1233: 1231: 1228: 1227: 1210: 1206: 1204: 1201: 1200: 1183: 1179: 1177: 1174: 1173: 1156: 1152: 1150: 1147: 1146: 1130: 1127: 1126: 1110: 1107: 1106: 1090: 1087: 1086: 1069: 1065: 1063: 1060: 1059: 1058:={Send, Wait}; 1043: 1040: 1039: 1023: 1020: 1019: 1003: 1000: 999: 979: 975: 966: 962: 947: 943: 917: 914: 913: 877: 874: 873: 838: 834: 832: 829: 828: 801: 797: 782: 778: 776: 773: 772: 742: 721: 717: 715: 712: 711: 683: 662: 658: 656: 653: 652: 630: 622: 619: 618: 596: 593: 592: 535: 531: 529: 526: 525: 494: 489: 488: 486: 483: 482: 449: 444: 443: 429: 426: 425: 396: 392: 390: 387: 386: 364: 361: 360: 338: 335: 334: 312: 309: 308: 282: 278: 269: 265: 250: 246: 220: 217: 216: 214: 209: 188: 152: 147: 99: 76: 65: 59: 56: 48:help improve it 45: 36: 32: 23: 22: 15: 12: 11: 5: 4735: 4725: 4724: 4710: 4709: 4689: 4673: 4663: 4653: 4631: 4609: 4599: 4590: 4587: 4585: 4584: 4571: 4555: 4539: 4536: 4533: 4530: 4525: 4522: 4519: 4515: 4492: 4488: 4484: 4481: 4478: 4475: 4453: 4449: 4433: 4417: 4414: 4411: 4408: 4405: 4402: 4397: 4393: 4372: 4369: 4366: 4363: 4360: 4357: 4354: 4351: 4348: 4345: 4342: 4320: 4316: 4299: 4297: 4294: 4282: 4279: 4258: 4255: 4253: 4250: 4234: 4230: 4226: 4221: 4217: 4213: 4210: 4198: 4195: 4193: 4190: 4174: 4171: 4163: 4160: 4142: 4139: 4135: 4110: 4107: 4102: 4098: 4094: 4089: 4086: 4082: 4078: 4075: 4072: 4069: 4066: 4063: 4058: 4055: 4051: 4047: 4044: 4041: 4038: 4035: 4030: 4027: 4023: 4019: 4016: 3996: 3974: 3971: 3967: 3963: 3958: 3955: 3951: 3928: 3925: 3921: 3917: 3912: 3909: 3905: 3892: 3889: 3874: 3871: 3861: 3858: 3843: 3839: 3816: 3812: 3789: 3785: 3781: 3776: 3772: 3768: 3765: 3753: 3752: 3725: 3721: 3698: 3694: 3671: 3667: 3644: 3640: 3617: 3613: 3609: 3604: 3600: 3596: 3593: 3581: 3580: 3570: 3569: 3558: 3555: 3551: 3548: 3544: 3541: 3538: 3535: 3532: 3529: 3526: 3521: 3517: 3496: 3493: 3490: 3485: 3481: 3477: 3474: 3471: 3468: 3447: 3444: 3440: 3437: 3432: 3428: 3424: 3421: 3418: 3409:Given a state 3407: 3396: 3393: 3389: 3386: 3382: 3379: 3376: 3373: 3370: 3367: 3364: 3359: 3355: 3334: 3331: 3327: 3324: 3320: 3317: 3314: 3310: 3307: 3303: 3300: 3297: 3292: 3288: 3284: 3281: 3278: 3273: 3270: 3267: 3263: 3241: 3238: 3234: 3231: 3226: 3222: 3218: 3215: 3212: 3203:Given a state 3187: 3182: 3179: 3176: 3172: 3169: 3165: 3162: 3159: 3156: 3153: 3150: 3147: 3142: 3138: 3129: 3127: 3124: 3120: 3117: 3113: 3110: 3107: 3103: 3100: 3096: 3093: 3092: 3089: 3086: 3083: 3079: 3076: 3072: 3069: 3066: 3063: 3060: 3057: 3054: 3049: 3045: 3036: 3034: 3029: 3025: 3021: 3016: 3012: 3008: 3004: 3001: 2997: 2994: 2993: 2991: 2986: 2983: 2980: 2977: 2972: 2968: 2964: 2959: 2955: 2951: 2948: 2945: 2940: 2937: 2934: 2930: 2919: 2918: 2906: 2903: 2900: 2879: 2876: 2872: 2869: 2864: 2860: 2856: 2853: 2850: 2841:Given a state 2839: 2828: 2823: 2819: 2815: 2812: 2807: 2803: 2799: 2796: 2793: 2790: 2787: 2766: 2763: 2759: 2756: 2751: 2747: 2743: 2740: 2737: 2728:Given a state 2726: 2715: 2712: 2707: 2703: 2699: 2696: 2693: 2688: 2684: 2680: 2677: 2673: 2669: 2665: 2654: 2643: 2638: 2633: 2628: 2623: 2619: 2615: 2612: 2609: 2606: 2603: 2600: 2595: 2591: 2587: 2584: 2581: 2578: 2575: 2571: 2568: 2557: 2545: 2523: 2501: 2498: 2495: 2472: 2469: 2466: 2461: 2458: 2455: 2451: 2447: 2442: 2439: 2436: 2432: 2428: 2425: 2422: 2419: 2415: 2411: 2407: 2403: 2399: 2396: 2392: 2389: 2386: 2383: 2380: 2375: 2350: 2345: 2341: 2337: 2332: 2328: 2324: 2321: 2318: 2313: 2309: 2305: 2302: 2299: 2296: 2293: 2290: 2287: 2284: 2273: 2272: 2259: 2256: 2241: 2237: 2214: 2210: 2187: 2183: 2160: 2156: 2135: 2113: 2109: 2086: 2082: 2059: 2055: 2034: 2012: 2008: 1985: 1981: 1960: 1940: 1920: 1900: 1880: 1860: 1840: 1818: 1814: 1793: 1773: 1753: 1733: 1728: 1724: 1720: 1715: 1711: 1707: 1704: 1701: 1696: 1692: 1688: 1685: 1682: 1679: 1676: 1673: 1670: 1667: 1648: 1647: 1631: 1609: 1605: 1582: 1578: 1555: 1551: 1528: 1524: 1503: 1483: 1463: 1441: 1437: 1416: 1396: 1376: 1356: 1351: 1347: 1343: 1338: 1334: 1330: 1327: 1324: 1319: 1315: 1311: 1308: 1305: 1302: 1299: 1296: 1293: 1290: 1279: 1278: 1262: 1240: 1236: 1213: 1209: 1186: 1182: 1159: 1155: 1134: 1114: 1094: 1072: 1068: 1047: 1027: 1007: 987: 982: 978: 974: 969: 965: 961: 958: 955: 950: 946: 942: 939: 936: 933: 930: 927: 924: 921: 910: 909: 904: 903: 887: 884: 881: 861: 858: 855: 852: 849: 846: 841: 837: 812: 809: 804: 800: 796: 793: 790: 785: 781: 770: 758: 755: 752: 748: 745: 741: 738: 735: 732: 729: 724: 720: 699: 696: 693: 689: 686: 682: 679: 676: 673: 670: 665: 661: 640: 636: 633: 629: 626: 617:is updated by 606: 603: 600: 576: 573: 570: 567: 564: 561: 558: 555: 552: 549: 546: 543: 538: 534: 523: 509: 506: 503: 500: 497: 492: 464: 461: 458: 455: 452: 447: 442: 439: 436: 433: 423: 407: 404: 399: 395: 384: 368: 358: 342: 332: 316: 290: 285: 281: 277: 272: 268: 264: 261: 258: 253: 249: 245: 242: 239: 236: 233: 230: 227: 224: 213: 210: 208: 207:Atomic FD-DEVS 205: 187: 184: 151: 150:Ping-pong game 148: 146: 143: 128: 127: 124: 121: 98: 95: 78: 77: 39: 37: 30: 9: 6: 4: 3: 2: 4734: 4723: 4720: 4719: 4717: 4706: 4700: 4692: 4686: 4682: 4678: 4674: 4672: 4668: 4664: 4662: 4658: 4654: 4651: 4647: 4644: 4640: 4636: 4632: 4629: 4625: 4622: 4618: 4614: 4610: 4607: 4604: 4600: 4597: 4593: 4592: 4559: 4552: 4537: 4531: 4528: 4523: 4520: 4517: 4513: 4490: 4486: 4479: 4476: 4473: 4451: 4447: 4437: 4430: 4415: 4409: 4406: 4403: 4400: 4395: 4391: 4367: 4364: 4361: 4352: 4349: 4346: 4343: 4340: 4318: 4314: 4304: 4300: 4293: 4291: 4288: 4278: 4276: 4272: 4268: 4264: 4249: 4232: 4228: 4224: 4219: 4215: 4211: 4208: 4192:Disadvantages 4189: 4187: 4184: 4180: 4170: 4168: 4159: 4157: 4140: 4137: 4133: 4124: 4108: 4105: 4100: 4096: 4092: 4087: 4084: 4080: 4076: 4073: 4070: 4067: 4064: 4061: 4056: 4053: 4049: 4045: 4042: 4039: 4036: 4033: 4028: 4025: 4021: 4017: 4014: 3972: 3969: 3965: 3961: 3956: 3953: 3949: 3926: 3923: 3919: 3915: 3910: 3907: 3903: 3888: 3886: 3883: 3880: 3866: 3857: 3841: 3837: 3814: 3810: 3787: 3783: 3779: 3774: 3770: 3766: 3763: 3750: 3749: 3744: 3740: 3723: 3719: 3696: 3692: 3669: 3665: 3642: 3638: 3615: 3611: 3607: 3602: 3598: 3594: 3591: 3578: 3577: 3576: 3575: 3556: 3549: 3546: 3542: 3539: 3533: 3527: 3519: 3515: 3494: 3491: 3483: 3479: 3475: 3472: 3466: 3445: 3442: 3438: 3430: 3426: 3422: 3419: 3408: 3394: 3387: 3384: 3380: 3377: 3371: 3365: 3357: 3353: 3325: 3322: 3315: 3312: 3308: 3305: 3298: 3290: 3286: 3282: 3279: 3271: 3268: 3265: 3261: 3239: 3236: 3232: 3224: 3220: 3216: 3213: 3202: 3201: 3200: 3177: 3174: 3170: 3167: 3160: 3154: 3151: 3148: 3140: 3136: 3118: 3115: 3108: 3105: 3101: 3098: 3084: 3081: 3077: 3074: 3067: 3061: 3058: 3055: 3047: 3043: 3027: 3023: 3019: 3014: 3010: 3006: 3002: 2999: 2989: 2984: 2978: 2975: 2970: 2966: 2962: 2957: 2953: 2949: 2946: 2938: 2935: 2932: 2928: 2904: 2901: 2898: 2877: 2874: 2870: 2862: 2858: 2854: 2851: 2840: 2826: 2821: 2817: 2813: 2805: 2801: 2797: 2794: 2788: 2785: 2764: 2761: 2757: 2749: 2745: 2741: 2738: 2727: 2705: 2701: 2694: 2691: 2686: 2682: 2675: 2671: 2667: 2663: 2655: 2626: 2621: 2617: 2613: 2610: 2607: 2604: 2601: 2593: 2589: 2585: 2582: 2573: 2569: 2566: 2558: 2543: 2499: 2496: 2493: 2486: 2485: 2484: 2470: 2467: 2464: 2459: 2456: 2453: 2449: 2445: 2440: 2437: 2434: 2430: 2426: 2423: 2420: 2417: 2413: 2409: 2405: 2401: 2397: 2394: 2390: 2387: 2384: 2381: 2378: 2364: 2348: 2343: 2339: 2335: 2330: 2326: 2322: 2319: 2316: 2311: 2307: 2303: 2300: 2297: 2294: 2291: 2288: 2285: 2282: 2270: 2269: 2264: 2255: 2239: 2235: 2212: 2208: 2185: 2181: 2158: 2154: 2133: 2111: 2107: 2084: 2080: 2057: 2053: 2032: 2010: 2006: 1983: 1979: 1958: 1938: 1918: 1898: 1878: 1858: 1838: 1816: 1812: 1791: 1771: 1751: 1731: 1726: 1722: 1718: 1713: 1709: 1705: 1702: 1699: 1694: 1690: 1686: 1683: 1680: 1677: 1674: 1671: 1668: 1665: 1657: 1653: 1645: 1644: 1643: 1629: 1607: 1603: 1580: 1576: 1553: 1549: 1526: 1522: 1481: 1461: 1439: 1435: 1414: 1394: 1374: 1354: 1349: 1345: 1341: 1336: 1332: 1328: 1325: 1322: 1317: 1313: 1309: 1306: 1303: 1300: 1297: 1294: 1291: 1288: 1276: 1275: 1274: 1260: 1238: 1234: 1211: 1207: 1184: 1180: 1157: 1153: 1112: 1092: 1070: 1066: 1045: 1025: 1018:={?receive}; 1005: 985: 980: 976: 972: 967: 963: 959: 956: 953: 948: 944: 940: 937: 934: 931: 928: 925: 922: 919: 907: 906: 901: 885: 882: 879: 856: 850: 847: 844: 839: 835: 826: 810: 807: 802: 798: 791: 788: 783: 779: 771: 753: 750: 746: 743: 736: 730: 722: 718: 694: 691: 687: 684: 677: 671: 663: 659: 634: 631: 624: 604: 601: 598: 590: 571: 568: 565: 559: 556: 550: 547: 544: 541: 536: 532: 524: 501: 498: 480: 456: 453: 437: 434: 431: 424: 421: 405: 402: 397: 393: 385: 382: 366: 359: 356: 340: 333: 330: 314: 307: 306: 304: 301: 288: 283: 279: 275: 270: 266: 262: 259: 256: 251: 247: 243: 240: 237: 234: 231: 228: 225: 222: 204: 200: 192: 183: 179: 177: 173: 169: 165: 156: 142: 140: 137: 133: 125: 122: 119: 118: 117: 115: 111: 108:" problem of 107: 103: 94: 92: 88: 84: 74: 71: 63: 53: 49: 43: 40:This article 38: 29: 28: 19: 4680: 4638: 4616: 4602: 4595: 4558: 4436: 4303: 4284: 4260: 4200: 4176: 4165: 4122: 3894: 3876: 3754: 3582: 3571: 2920: 2274: 1649: 1280: 911: 899: 824: 588: 478: 419: 380: 354: 328: 302: 215: 201: 197: 180: 175: 171: 167: 163: 161: 129: 100: 82: 81: 66: 60:January 2019 57: 41: 1105:(Send)=0.1, 4589:References 3860:Advantages 1871:(BW)=0.5, 1387:={?push}; 1038:={!send}; 4699:cite book 4570:∞ 4535:→ 4514:δ 4491:ϕ 4483:→ 4474:λ 4448:δ 4413:→ 4407:× 4392:δ 4356:→ 4350:× 4341:ρ 4315:δ 4296:Footnotes 4229:δ 4216:δ 4209:τ 4106:≤ 4093:− 4077:≤ 4071:− 4062:≤ 4046:≤ 4034:≤ 4018:≤ 3995:∞ 3962:− 3838:δ 3516:δ 3467:λ 3439:∈ 3354:δ 3316:τ 3262:δ 3233:∈ 3137:δ 3109:τ 3044:δ 3020:− 2929:δ 2902:∈ 2871:∈ 2758:∈ 2695:τ 2637:∞ 2627:∈ 2608:∈ 2468:λ 2450:δ 2431:δ 2340:δ 2327:δ 2320:τ 2236:δ 2209:δ 2182:δ 2155:δ 2134:ϕ 2108:δ 2081:δ 2054:δ 2033:≠ 2007:δ 1980:δ 1959:τ 1939:τ 1919:τ 1899:τ 1879:τ 1859:τ 1851:(BG)=0.5, 1839:τ 1723:δ 1710:δ 1703:τ 1630:ϕ 1604:δ 1577:δ 1550:δ 1523:δ 1502:∞ 1482:τ 1462:τ 1427:={I, T}; 1407:={!pop}; 1346:δ 1333:δ 1326:τ 1273:, Wait). 1261:ϕ 1235:δ 1208:δ 1181:δ 1154:δ 1133:∞ 1113:τ 1093:τ 977:δ 964:δ 957:τ 883:∉ 880:ϕ 857:ϕ 851:∪ 840:ϕ 808:× 803:ϕ 795:→ 780:δ 719:δ 660:δ 625:τ 602:∈ 560:× 554:→ 548:× 533:δ 505:∞ 460:∞ 441:→ 432:τ 403:∈ 280:δ 267:δ 260:τ 4716:Category 4646:Archived 4624:Archived 3550:′ 3446:′ 3388:′ 3326:′ 3309:′ 3240:′ 3171:′ 3132:if  3119:′ 3102:′ 3078:′ 3039:if  3003:′ 2878:′ 2765:′ 2672:′ 2570:′ 2414:′ 2398:′ 1951:(W)=26, 1911:(GR)=30, 1891:(G)=30, 1253:(Wait)=( 898:denotes 747:′ 688:′ 635:′ 164:?receive 145:Examples 3756:time)=( 3584:time)=( 1971:(D)=2; 1931:(R)=2, 1764:={?p}; 1656:SP-DEVS 1125:(Wait)= 132:SP-DEVS 110:SP-DEVS 97:History 83:FD-DEVS 46:Please 18:FD-DEVS 4687:  4550:as in 4428:as in 4271:Python 2483:where 2146:, G), 1744:where 1642:, I). 1367:where 998:where 827:where 303:where 4123:push1 2379:=< 2286:=< 2126:(G)=( 1831:=BG, 1669:=< 1622:(I)=( 1454:=I; 1292:=< 923:=< 226:=< 168:!send 4705:link 4685:ISBN 4505:and 4383:and 4252:Tool 3941:and 2471:> 2363:DEVS 2349:> 1732:> 1494:(I)= 1355:> 986:> 872:and 289:> 176:Wait 174:and 172:Send 114:DEVS 106:OPNA 91:DEVS 4273:at 4265:at 3507:if 3459:, 3345:if 3253:, 2778:, 2512:of 2361:is 2045:G; 823:is 651:if 587:is 477:is 418:is 379:is 353:is 327:is 50:to 4718:: 4701:}} 4697:{{ 4292:. 4263:C# 4188:. 4169:. 4158:. 4101:21 4074:20 4065:40 4037:40 3887:. 3884:, 1514:; 1145:; 93:. 4707:) 4693:. 4652:) 4630:) 4608:) 4582:. 4553:. 4538:S 4532:S 4529:: 4524:t 4521:n 4518:i 4487:Y 4480:S 4477:: 4452:y 4431:. 4416:S 4410:X 4404:S 4401:: 4396:x 4371:} 4368:1 4365:, 4362:0 4359:{ 4353:X 4347:S 4344:: 4319:x 4233:y 4225:, 4220:x 4212:, 4141:1 4138:e 4134:t 4109:0 4097:t 4088:1 4085:e 4081:t 4068:, 4057:2 4054:e 4050:t 4043:0 4040:, 4029:1 4026:e 4022:t 4015:0 3973:2 3970:e 3966:t 3957:1 3954:e 3950:t 3927:2 3924:e 3920:t 3916:, 3911:1 3908:e 3904:t 3842:x 3815:e 3811:t 3788:e 3784:t 3780:, 3775:s 3771:t 3767:, 3764:s 3724:e 3720:t 3697:e 3693:t 3670:s 3666:t 3643:e 3639:t 3616:e 3612:t 3608:, 3603:s 3599:t 3595:, 3592:s 3557:. 3554:) 3547:s 3543:, 3540:y 3537:( 3534:= 3531:) 3528:s 3525:( 3520:y 3495:y 3492:= 3489:) 3484:s 3480:t 3476:, 3473:s 3470:( 3443:S 3436:) 3431:s 3427:t 3423:, 3420:s 3417:( 3395:. 3392:) 3385:s 3381:, 3378:y 3375:( 3372:= 3369:) 3366:s 3363:( 3358:y 3333:) 3330:) 3323:s 3319:( 3313:, 3306:s 3302:( 3299:= 3296:) 3291:s 3287:t 3283:, 3280:s 3277:( 3272:t 3269:n 3266:i 3237:S 3230:) 3225:s 3221:t 3217:, 3214:s 3211:( 3181:) 3178:1 3175:, 3168:s 3164:( 3161:= 3158:) 3155:x 3152:, 3149:s 3146:( 3141:x 3126:) 3123:) 3116:s 3112:( 3106:, 3099:s 3095:( 3088:) 3085:0 3082:, 3075:s 3071:( 3068:= 3065:) 3062:x 3059:, 3056:s 3053:( 3048:x 3033:) 3028:e 3024:t 3015:s 3011:t 3007:, 3000:s 2996:( 2990:{ 2985:= 2982:) 2979:x 2976:, 2971:e 2967:t 2963:, 2958:s 2954:t 2950:, 2947:s 2944:( 2939:t 2936:x 2933:e 2917:, 2905:X 2899:x 2875:S 2868:) 2863:s 2859:t 2855:, 2852:s 2849:( 2827:. 2822:s 2818:t 2814:= 2811:) 2806:s 2802:t 2798:, 2795:s 2792:( 2789:a 2786:t 2762:S 2755:) 2750:s 2746:t 2742:, 2739:s 2736:( 2714:) 2711:) 2706:0 2702:s 2698:( 2692:, 2687:0 2683:s 2679:( 2676:= 2668:0 2664:s 2642:} 2632:T 2622:s 2618:t 2614:, 2611:S 2605:s 2602:: 2599:) 2594:s 2590:t 2586:, 2583:s 2580:( 2577:{ 2574:= 2567:S 2556:. 2544:M 2522:M 2500:Y 2497:, 2494:X 2465:, 2460:t 2457:n 2454:i 2446:, 2441:t 2438:x 2435:e 2427:, 2424:a 2421:t 2418:, 2410:0 2406:s 2402:, 2395:S 2391:, 2388:Y 2385:, 2382:X 2374:M 2344:y 2336:, 2331:x 2323:, 2317:, 2312:0 2308:s 2304:, 2301:S 2298:, 2295:Y 2292:, 2289:X 2283:M 2240:y 2213:y 2186:y 2159:y 2112:y 2085:y 2058:y 2011:x 1984:x 1817:0 1813:s 1792:S 1772:Y 1752:X 1727:y 1719:, 1714:x 1706:, 1700:, 1695:0 1691:s 1687:, 1684:S 1681:, 1678:Y 1675:, 1672:X 1666:M 1608:y 1581:y 1554:x 1527:x 1440:0 1436:s 1415:S 1395:Y 1375:X 1350:y 1342:, 1337:x 1329:, 1323:, 1318:0 1314:s 1310:, 1307:S 1304:, 1301:Y 1298:, 1295:X 1289:M 1239:y 1212:y 1185:x 1158:x 1071:0 1067:s 1046:S 1026:Y 1006:X 981:y 973:, 968:x 960:, 954:, 949:0 945:s 941:, 938:S 935:, 932:Y 929:, 926:X 920:M 886:Y 860:} 854:{ 848:Y 845:= 836:Y 811:S 799:Y 792:S 789:: 784:y 757:) 754:0 751:, 744:s 740:( 737:= 734:) 731:s 728:( 723:x 698:) 695:1 692:, 685:s 681:( 678:= 675:) 672:s 669:( 664:x 639:) 632:s 628:( 605:S 599:s 575:} 572:1 569:, 566:0 563:{ 557:S 551:X 545:S 542:: 537:x 508:] 502:, 499:0 496:[ 491:Q 463:] 457:, 454:0 451:[ 446:Q 438:S 435:: 422:; 406:S 398:0 394:s 383:; 367:S 357:; 341:Y 331:; 315:X 284:y 276:, 271:x 263:, 257:, 252:0 248:s 244:, 241:S 238:, 235:Y 232:, 229:X 223:M 73:) 67:( 62:) 58:( 44:. 20:)

Index

FD-DEVS
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discrete event dynamic systems
DEVS

OPNA
SP-DEVS
DEVS
SP-DEVS




crosswalk light controller
SP-DEVS

DEVS
Behavior of Atomic DEVS







directed acyclic graph
strongly connected component

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