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# Topic: State function

###### In the News (Wed 21 Aug 19)

 Charming Python: Generator-based state machines In the model, one or more states are defined as end states, and exactly one state is defined as a start state (calls to the class methods configure this). function also accepts a "start state" as an argument, although perhaps a default value could be selected automatically if that was desired. Each line of the results represents flow spent in one particular state handler or generator; the flow context is announced at the beginning of the line. www-106.ibm.com /developerworks/linux/library/l-pygen.html   (2098 words)

 State Space Example #1 The state space model for an nth-order system is a set of n 1st-order differential equations, called the state equations, and a set of p algebraic equations, called the output equations. The second form of the transfer function makes use of the fact that the inverse of a matrix can be written as the adjoint of the matrix divided by the determinant of the matrix. Obviously, the mode that is missing from the poles of the transfer function is the one which was cancelled by a zero in the original form of the transfer function. ece.gmu.edu /~gbeale/ece_220/state_space_01.html   (1804 words)

 state functions defiined   (Site not responding. Last check: 2007-09-18) A state function is a function depending only on the initial and final state of the system and not on the path between them. The enthalpy function for the elements in their natural state (Fe(s) for example) are assigned the value zero. Measurements of entropy of elements and compounds, referred to a final state of 1 atm pressure and 298 K temperature, allows lists to be made of this thermodynamic function. www.chem.brown.edu /chem12/energy/stateFunctionDf.html   (228 words)

 UnrealWiki: UnrealScript Language Reference/States State code execution doesn?t continue until you go to a new state, or go to a new label within the current state. When you have a function that is implemented globally, in one or more states, and in one or more parent classes, you need to understand which version of the function will be called in a given context. If the object is in a state, and an implementation of the function exists somewhere in that state (either in the actor?s class or in some parent class), the most-derived state version of the function is called. wiki.beyondunreal.com /wiki/UnrealScript_Language_Reference/States   (1880 words)

 [No title] State machines represent some of the most interesting classes of digital circuits,  microprocessors are fundamentally state-machine based, many of the gadgets we interact with in everyday life have state machine behavior,  microwave ovens, wash machines, vending machines, automatic transmissions, all can be modeled at some level using state machines. We are going to develop a general model for a state machine, a notation for describing state machines, and a design methodology. Next State Decoder – This is a combinatorial logic circuit that feeds the input of our memory element, the D inputs of our D flip-flops. www.uwm.edu /Course/318-457/IntroState/IntroState.htm   (691 words)

 Dr. Dobb's | State Machine Design in C++ | April 15, 2003 Every state machine has the concept of a "current state." This is the state the state machine currently occupies. At the end of the state function, a check is performed to determine whether an internal event was generated. After the state function has a chance to execute, it deletes the event data, if any, before checking to see if any internal events were generated. www.ddj.com /184401236?pgno=2   (3392 words)

 11 Finite State   (Site not responding. Last check: 2007-09-18) The functions thus implemented are used as inputs to a bank of D flip-flops, one per bit in the state encoding. Fortunately, the output function is simply a combinational function of the state (in the case of a classifier or acceptor) or of the state and input (in the case of a transducer). Not only is the number of states too big to fit in the memory of a computer that would be usable as a tool for analyzing such finite-state machines, it is also impossible for a human to understand the workings of a machine based on explicit representation of its states. www.cs.hmc.edu /claremont/keller/webBook/ch12   (10653 words)

 Search (Subsystem of AIMA Code) The state of the environment is one of the states from the problem, starting with the initial state. state) pairs, where the state is another vertex that is visible from the current vertex v1, and the action is a delta (dx dy) from v1 to the new one. In this case, the action and the new state are both the name of the city. www.cs.berkeley.edu /~russell/code/doc/overview-SEARCH.html   (3571 words)

 Implementing Efficient State Machines - Essays - Projects - Conman Laboratories States machines are a useful design technique for “event driven systems.”; Event driven systems have all sorts of applications in the real world (e.g. State machines can be implemented in a variety of ways: look-up tables, switch-case blocks and functional states. Each state function (bubble) can then be written to transit on the proper input indication. www.conman.org /projects/essays/states.html   (1303 words)

 State-based safety analysis A state is a "state of affairs", the important properties of the system at one point in time. The allowed states can be represented as restrictions on the values of the variables, and behavior can be represented by changes in the values of the variables. We can describe a state by writing a boolean function that returns true when the system is in that state (we can use the name of the function as the name of the state). staff.washington.edu /~jon/meded/inv.html   (1554 words)

 Control Tutorials for Matlab A dynamic system is most commonly described in one of three ways: by a set of state-space equations and the corresponding matrices, by a transfer function with the numerator and denominator polynomials, or by a list of poles and zeros and the associated gain. This model is basically the same as the transfer function model, except that the polynomials have been factored so the poles are all in the denominator and the zeros are in the numerator. Remember that for a proper transfer function, the number of poles n is greater than or equal to the number of zeros m. www.engin.umich.edu /group/ctm/extras/conver.html   (1472 words)

 libsswf: sswf::State Class Reference This function is used to reset a State object to its initial setup. The State is marked as not having a color transformation, color transform which is also reset to have no effect. This function sets the blending mode to be used to render the object of this state. sswf.sourceforge.net /libsswf/classsswf_1_1State.html   (878 words)

 UnrealWiki: State A state is declared as a block of code in the class. Functions are defined within a state just as they would be elsewhere in the class. State code is code that is within the state block, but outside of any functions. wiki.beyondunreal.com /wiki/State   (1357 words)

 CTMS: Conversions Extra System variab are used independently of the original system notation, and it is easy to both store a system variable from any representation and to extract any of the three system representations from a system variable. The 'v' causes the function to return a vectorized version of the zeros and poles, which is useful for SISO systems. You should always check your transfer function, and if numbers that are 0.0000 show up that are supposed to be zero, rewrite the numerator into M www.library.cmu.edu /ctms/ctms/extras/conver.htm   (1758 words)

 Dr. Dobb's | Hierarchical State Machine Design in C++ | November 1, 2005 And since states are classes, they can store their own mini-states; for instance, how many times has this state been entered, how long on average has the system spent in this state, and so on. The STATE class passed as the template parameter is expected to implement on_enter() and on_exit() functions that can be used to initialize the hierarchy. The hierarchy in the state machine is achieved by using C++ inheritance and polymorphism to handle the same event differently based on the context (or state) of the system. www.ddj.com /dept/cpp/184402040   (2228 words)

 Phantasmal Operation: User States Another way to implement a state machine is to use a function as a state instead of a costant. Its switch_to() function is called when the state becomes active — notice that it sends the prompt string to the user. The to_user() function is like from_user(), but is called with strings being sent to the user from the MUD rather than strings typed by the user and meant for the MUD. phantasmal.sourceforge.net /Operation/UserStates.html   (1566 words)

 EEC - AL-1000 State Descriptions Of the 2^5=32 possible states of the function execution state machine, 21 are used. A given state may be used in several procedures and more than one action may be performed during that state depending upon which procedure is executing. For DP-only state cycles the number cycle is truncated by forcing a state transition at the end of DGT1 period. www.cs.ubc.ca /~hilpert/eec/misc/CasioAL1000Tech/fstate.html   (648 words)

 Qt 4.1: QPaintEngineState Class Reference   (Site not responding. Last check: 2007-09-18) Which properties that have changed can at any time be retrieved using the state() function. The QPaintEngineState class also provide the painter() function which returns a pointer to the painter that is currently updating the paint engine. An instance of this class, representing the current state of the active paint engine, is passed as argument to the QPaintEngine::updateState() function. web.mit.edu /qt-dynamic_v4.1/www/qpaintenginestate.html   (564 words)

 Format Document "Competitive government process" means the process, as developed by the governor's office of management and budget, designed to standardize the methodology for how the state identifies and evaluates state functions to determine if future competitive contracting with the private sector and other state agencies is in the best interest of this state. "State agency" means any executive department, office, commission, institution, board or other executive agency of state organization regardless of whether monies are appropriated to the agency. State agency does not include the Arizona board of regents, the universities under its jurisdiction or community college districts. www.azleg.state.az.us /FormatDocument.asp?inDoc=/ars/41/02771.htm&Title=41&DocType=ARS   (265 words)

 State Service Procurement Overview It does not follow the model found in other states in which a large, rule-laden, centralized bureaucracy is responsible for “purchasing.” Such a centralized model seems to have a significant history of overpriced projects and failures to buy what was really sought by program staff and needed by citizens. Broadly defined, Grants are contracts used to effect awards of state or federal funding or property to "grantees" for particular purposes in which services are delivered or resulting benefits accrue to third party beneficiaries. Contract Management can be defined as a state department or agency’s on-going continuum of processes for administering and reviewing the performance of each service contract for efficiency, cost-effectiveness, and service provider accountability and results. www.state.tn.us /finance/rds/ocr/tn.html   (275 words)

 Do a state function be multu-valued function A thermodynamic state function should be single valued function of independent varibles. If a state function has multiple values, either the definition is incorrect or the data. Their reply is that a state function can have multiple values. www.physicsforums.com /showthread.php?t=64702   (735 words)

 Is air density a state function? TonyG, I'm not deliberately hijacking your thread --- you have been reassured that density is a state function, which was your initial question. you have been reassured that density is a state function, which was your initial question. I was kind of looking for some type of an effect where the water content of the air is affected by the compression process. www.physicsforums.com /showthread.php?p=57473   (981 words)

 8.1 Value Prediction with Function Approximation Consequently, when a single state is backed up, the change generalizes from that state to affect the values of many other states. Because a backup is generated for each state encountered in the experience, the training examples available are naturally distributed according to the on-policy distribution. Reaching this goal is sometimes possible for simple function approximators such as linear ones, but is rarely possible for complex function approximators such as artificial neural networks and decision trees. www.cs.ualberta.ca /~sutton/book/ebook/node86.html   (1300 words)

 hyperstruct blog - Finite state machines vs. multithread, CPS to the rescue   (Site not responding. Last check: 2007-09-18) function, forget about it, then come back when result of authentication is received. Because success or failure could happen quite some time after authentication was requested—remote host might be busy or even down—and during this time the browser cannot just freeze there for the sake of sequentiality, it has a user to cater to. So, what we want when going out of a function is resuming execution just after the call to the function, possibly passing back a value. blog.hyperstruct.net /2006/03/06/finite-state-machines-vs-multithread-cps-to-the-rescue   (1260 words)

 State Machines: Cooperative Mini-kernels with Yielding We will also need to deal with function arguments which is going to be tricky due to the fact that arguments are within the stack frame and, as we’ve already pointed out, we can’t expect stack variables to be persistent across a YIELD so we can’t expect them to be persistent across a CALL either. The jump at the beginning of the function may skip over the initialization of certain variables, especially those that are aliased into registers. This implies that code in such state machines can never be optimized which is a major drawback, although in many cases such state machines are not speed critical. www.mine-control.com /zack/statemachines/statemachines.html   (1635 words)

 Adobe - Developer Center : Creating a video player using the state design pattern and ActionScript 3.0 When you add more states, all you need to do is add their transitional behaviors to the interface and create a new concrete state (class) that implements them. To manage the states and their transitions, you need some kind of management object—something to keep track of everything in the state machine. Although you're going to have to add some code to the two state classes for it to work with the context class, for now think of what will happen in the two different states when those behaviors are executed. sdc.shockwave.com /devnet/flashmediaserver/articles/video_state_machine_as3_print.html   (4318 words)

 Cheops: State Machine Function Descriptor   (Site not responding. Last check: 2007-09-18) A function descriptor is a text file which contains the names of the software and hardware object files and other configuration information for a State Machine function. The first argument is the version of hardware for which the configuration has been compiled, the second is the filename, either relative or absolute. In a manner identical to hardware-module, this parameter specifies the location of a configuration file for the second hardware module in a function that uses both modules on a processor board in unison. web.media.mit.edu /~wad/cheops/statemac/software/func_desc.html   (262 words)

 CREATE AGGREGATE It is possible for two or more aggregate functions to exist with the same name, as long as they accept different data types. If you have defined a finalization function for your aggregate, it will be called to calculate the output value after all data has been processed; otherwise, the ending state value is returned without further processing. The previous state value is retained, and the aggregate function continues to process input values. www.faqs.org /docs/ppbook/r23733.htm   (640 words)

 Cheops: State Machine Rman Interface Additional functions are provided for constructing the list of parameters and the machine description to be passed to the function. This functions builds a pipe (or a number of pipes) that performs the state machine function specified by the machine description, passing it the parameter list provided. If there are any problem in the loading process, the function causes the application to exit, after printing a message on the debug console. web.media.mit.edu /~wad/cheops/statemac/software/rman.html   (692 words)

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