General.Name,Number,General.Description,Notes,Examples,GUID
Dictionary Revision History,,"This list of terms originated from the terms and definitions from the original RFI CSV file titled SE Conceptual Model Semantic Dictionary (Draft 12_03-27-03) located at http://www.omg.org/syseng/SE_Conceptual%20Model/SE_Conceptual_Model.htm.  

Revision          Date              Author    Description
1.0.0           12/17/2014       J. Watson    Creation
1.1.0           12/29/2014       J. Watson    Added first item called Dictionary Revision History to track revisions
2.0.0           01/20/2015       J. Watson    Added Number column from original Draft 12 document

",,,GUID 7533ffb9-35d0-489b-a94f-46ed60945931
Decomposition,,"In the Concept Model an aggregation symbol is used with the letter ""C"" imposed on it. This has the meaning that the decomposition is complete in the sense that all of the parts that comprise the whole are listed.",One of the aggregation operations used here is not included in UML1.X. f all of the parts are taken away there is nothing left. If the mass of all the parts is added it is the mass of the whole.,"This concept of aggregation is essential in giving parts lists to engineering design, manufacturing, or maintenance - they must know all the parts.",GUID 7dbfffc4-a336-47c0-93c7-85e91742cf8b
Element,1,That which is discernable by reproducible measurement of its characteristics.,"The semantic term Element includes matter, energy and information.  Product from ISO 10303-Part 1 STEP definitions provide product: a thing or substance produced by a natural or artificial process. We need to define the informational attributes associated with the entity named ""product"" as defined within Product Identification Module 1017. This entity named ""product"" has attributes that enable one to capture: id, name and description.  AM 1017 provides the definition: A Product is the identification of a product or of a type of product. It is a collector of data common to all revisions of the Product. Element appears to be a legitimate subclass of product because AP233 requires reproducible measurement of Element.","Examples: Any thing from microscopic particles to galaxy clusters is an Element.  Any thing with a finite existence from galaxies with billion-year lives to trans-uranic Elements with lifetimes less than nano-seconds. Counter-example: Things like ghosts, devils, the Loch Ness Monster, the city of Atlantis are not discernable by reproducible measurement and are excluded. Things under R&D that do not yet have reproducible measurements and process control are excluded. Silicon for electronic devices would be excluded in 1900. ",GUID b9c60e27-d024-4ae2-95d3-5974f4f6d297
Category,2,Categories provide the grouping of Elements into a set based on defined properties that serve as selection criteria for which Elements of all those in the universe belong in that set.,"This is one of the forms of generalization/specialization. This is NOT INHERITANCE as found in object-oriented software languages. Physical elements, matter and energy, do not inherit their properties. Rather they posses the properties of themselves and can be identified by measurement of those properties. For a discussion of these issues in computer science see the work of Barbara Liskov on abstract data types and the CLU language. See set theory.",Explanation: It is categorization that enables us to define alternatives and create taxonomies for libraries. ,GUID f9d59225-e2be-4079-b1e4-da2ecb8cc267
Inclusive-Complete Category,,Any Element of the super category may reside in any number of the sub-categories and all members of the super-category are members of at least one of the sub-categories.,,"the super category is all apples raised on a particular farm. The subcategories are used for sorting and include: good apples, bruised apples, marked apples, rotten apples, and wormy apples.",GUID de0d169e-edc8-4e66-b061-7deeda32815e
Inclusive-Incomplete Category,,Any Element of the super category may reside in any number of the sub-categories and only some members of the super-category are members of the sub-categories.,,"the super category is all fruit raised on a particular farm. The subcategories are used for sorting and include: good apples, bruised apples, marked apples, rotten apples, and wormy apples.",GUID 0326f0db-2d12-4dc8-85c3-638a7dc311eb
Exclusive-Complete Category,,Any Element of the super-category may reside in one and only one of the sub-categories and all members of the super-category are members of at least one of the sub-categories.,This is an often used form of classification.,"An automobile has in its decomposition tree an engine. For this automobile any of three engines: 140 HP, 180 HP, and 220 HP. The superclass of engine is exhausted by the subclasses and the subclasses are independent.",GUID 4b4d02d9-0695-4328-9c1f-7955ab246fb2
Exclusive-Incomplete Category,,Any Element of the super-category may reside in one and only one of the sub-categories and only some members of the super-category are members of the sub-categories.,,All of the automobile engines under current manufacture by GM and its subsidiaries are considered as candidates for three engines that will be used in a new car.,GUID b5fea368-6418-44ff-b2da-43c694d42331
Domain-of-Interest,3,All elements of interest to the problem at hand.,"These include the system, the environment, external systems of interest in the environment, stakeholders, enabling things, things that may cause failure, and all other things of interests.",,GUID da6daf26-0290-4ee2-984e-c6d74119c92c
System,4,"Element with a well defined boundary with respect to all other elements, outside of it and in the domain of interest, with which it interacts.",A system is composed of interacting systems. The emergent behaviors and properties of a system are the result of the properties and behaviors of the sub-systems and their interactions. These interactions may be highly nonlinear. Note systems decompose hierarchically; they are systems of systems. ,"A car has a well defined boundary with respect to its environment, and the relationships are both static and dynamic. Similarly the engine has the same kinds of relationships and so does the fuel injector of the engine. ",GUID 55af40cf-fe54-45bb-9d76-59090edc0308
System View,5,A collection of elements and related information about the system that are useful and defined for a particular purpose in a particular context.,"Engineers involved in specification, design, manufacturing and maintenance need a particular collection of information to do their work. An engineer working on the cooling system of an engine needs information about a particular set of parts, behaviors and properties that are particular to that engineering problem. The set of possibly useful system views is very large.",,GUID cdb04c3b-ff23-43f1-b02e-ef95810170b7
Environment,6,All elements external to the system that interact with it.,"It is often possible to limit the parts of the environment needed for development purposes to those external systems that are neighbors to the system. Note that the environment includes not only the external systems that couple with it for useful purposes, but it also include all external systems that may interact in a manner that causes failure. ",Elements in the environment need not have well defined boundaries as do systems. A laptop connects to a power grid. But for the design of the laptop it is not important to consider the power grid as a system. It is simpler to consider it as an element with an interface the laptop connects to.,GUID 6401ef76-40fd-4ad3-ab4d-05e6fc34ad09
Stakeholder,7,"The people, organizations and institutions that are a part of the system environment because the System provides some benefit to them and they have an interest in the system.","They include, for example, the producers, owners, operators, users, and maintainers of the system.",,GUID 5b2913fb-e811-4d34-ab4d-8244d60bf152
Stakeholder Need,8,The benefits That the Stakeholders wish to be satisfied by or delivered by the system when it is implemented and functioning.,At the top level of development these needs drive the requirements for the system and the optimization criteria for its development.,,GUID bdf9c05e-ee49-4ee0-82dd-6c6a447e5cb9
Property,9,"Any named measurable or observable attribute, quality or characteristic of an Element.","Property is usefully decomposed into several categories  the measurable characteristics in normal use, the measurable characteristics that require additional instrumentation for measurement, and the observable characteristics. It is a systems engineering best practice to separate behavior from structure (function from form) and to allocate behavior to structure based on trade studies among alternatives.","Acceleration of a car is in the first category, behavior, and can be observed in normal operation of the car. Weight of the car is not directly observable in the use of the car and requires that the car be placed on a large scale to make the observation. That a car has four wheels, steering wheel on the left, and a sun roof are directly observable structures.",GUID 7b00d7aa-725e-4b64-bf3f-1d766518cc9d
System Requirement,10,A statement of properties that a system shall exhibit or shall not exhibit when completed.,Requirements are derived from requirements in a many-to-many relationship.,,GUID 411bbb73-537b-4ace-b167-85e0e0b0fc6c
Reference Document,11,"A statement of the document source of information concerning an element or a property of an element, including the tensor characteristics, units, values, value probability distribution, or symmetry.",,,GUID 3744381b-91bb-4e0c-9e90-5a4f391eb1aa
Behavior,12,What an Element is to do or is not to do in response to excitations it receives from the external Elements in its environment..,This is the subclass of property that includes measurable characteristics in normal use. It encompasses the response of the system to excitation by things in tis environment. In some other engineering disciplines it is the analysis with differential equations that is called behavior. that is not what is meant here. Here behavior is a model representation of a functional requirement: what it is to do.," Example: Make a fender is a behavior with several function steps, inputs of sheet steel, power, paint primer, and paint and the out put of a fender. Ring is the behavior of a bell or tuning fork. The ""Q"" of the bell or tuning fork is a physical property of the bell and its environment.",GUID d7c2b804-0717-40c8-896c-4ea6efe327fd
Function Based Behavior,12.1,A description of behavior based on function and transformation without reference to state,,,GUID 4d5248ec-4641-48ed-84d6-f38db6341832
Physical Property,13,What an Element exhibits or does not exhibit in response to excitation and stimulation from auxiliary measurement entities that are not part of its context.,"This is the subclass of property that encompasses measurable characteristics that require additional instrumentation to measure them. They cannot be established from responses to the environment alone. All of the ""properties"" used in analysis with differential equations fall into this category.","Responses of an Element like mass, power consumption, MTBF, etc. are critically important and appear in requirements. They are not measured by responses to excitation from their environment.",GUID 80a3f132-4ce3-4058-907a-4e1bf68de3e4
Structure,14,"The decomposition, interconnection and other static relationship among the parts of the system.","Physical properties are budgeted to structure using analysis methods, and the emergent performance is calculated using the same methods. Behavior is allocated to the structure. Form and function are separated conceptually so that the design can be optimized by considering several different structures that can provide the desired emergent behavior and properties.","In a real example of optimization the engineer examines not just the maximum or minimum, but looks at the trend in data in that region to be where the solution is robust. The solution does not degrade rapidly with variances in controlled variables.",GUID 61e1fde6-c612-4cba-9dce-1d95301fc0ca
Part,15,The static parts of the system including their interconnection and interconnection descriptions.,"Physical Property is assigned to them. Many persons think of these as components, but manufacturing thinks of them as assemblies because they build assemblies. Assembly is a standard ISO naming convention. It may be desirable to alias this name. Physical properties are budgeted to structure using analysis methods, and the emergent performance is calculated using the same methods. Behavior is allocated to the structure. Form and function are separated conceptually so that the design can be optimized by considering several different structures that can provide the desired emergent behavior and properties.",,GUID 66d52f28-6100-45f5-8a38-2e4aa142e28f
Link,16,A particular kind of Part that is used when it is helpful not to model or specify its details.,Link must be provided in the concept model because a number of application tools use the concept. Links ultimately are fully specified and become system-assembly.,"In a pumping system it may be useful to define the pumps and tanks while representing the piping as links without detail. At some point in the design detail like diameter, flow impedance, pressure rating, and corrosion resistance must be defined. At his point the link becomes a part.",GUID eeb7d798-3130-41b6-8d9e-3b930c4ddd63
Port,17,A connection point on a Part in the Part decomposition hierarchy.,"Systems interconnect with one another port-to-port. Ports couple to desired things in the environment and also to the ports of things that cause failure, threaten security or safety. The alias for Port is Interface connection, the term that is used in AP239. Note that when a system interacts with its environment that the boundary between the system and the environment is the collection of all interacting ports.","Consider a ultrasonic transmitting transducer coupled to a water tank and a receiver transducer coupled to the tank. The transmitter port connects to a water port and couples sound energy into the water. The intensity at any point is a result of the impedance match between the two ports, the radiation pattern of the transducer, and the attenuation and dispersion in the water. The receiving transducer is attached to another port of the water. The received signal is dependent on the relative impedance of the two ports, the sound distribution in the water, and the radiation pattern of the receiving transducer. This example is often oversimplified as ""broadcast"" neglecting the port to port conditions and the properties of the medium and neglecting the ports. ",GUID d609b019-1794-438e-83a8-a932330860e1
Interconnection,18,A listing of the ports that interconnect with one another.,"The interconnection may exist for structural reasons without any flow from port to port. The interconnection may exist because functions are assigned to particular assemblies, and the output from one function is an input to the other function. In this case the ports and their interconnection must exist to support flow. The alias for interconnection is Interface connection, the term used in AP239.",,GUID a71f4622-ec29-4f0c-90c3-d748a275d136
Interface Specification,19,"A description of a Port of a Part that includes the geometric description, I/O description, protocols that must be met, assemblies of parts required to join two ports, allowable defect characteristics, etc.  The interface description includes the emergent properties of the interface that is the result of the two ports interacting, and is not associated with either.","Parts interact physically through direct physical contact, exchange of Elements, and through forces they exert such as gravity, compression or torque. Thus I/O is bound to ports and described by interfaces. The interface may consist of more than the two ports and may involve an assembly of parts as in the case of two flanges that are assembled with six bolts and an O-ring. The interface may also require detailed description to define what occurs there or how it is maintained. ","For two ports to connect, their interfaces must be compatible. The current carrying capacity of a plug and a socket is a result of the surface area of contact, the contact force, the wiping action on plugging them together, and the surface conductivity of both. This is an emergent property that is not assignable to either port individually.",GUID 3e62a822-58a1-4422-9a1d-7e22c4fe2d5e
Function,20,The entity in the context of modeling that transforms an input set of Elements into a set of output Elements that may be the same or measurably different from the input set.,"It is a part of Behavior. This is what functions do in mathematics where the I/O are variables. In software the I/O is data. In systems engineering the I/O are Elements, matter, energy, and information. An internal Function is a kind of function that is allocated to and implemented by System/Structure. An external function is a kind of function that is allocated to and implemented by Elements in the Environment. ","Example for systems engineering: The function may be burn gasses with an input of two moles of hydrogen and one mole of oxygen. The output will be one mole of water, distinctly different from the inputs and a lot of energy. This function may be followed by a function cool to 90 degrees centigrade. The input had pressure and volume proportional to temperature; the output is now liquid with a well-defined volume, an isotropic compressibility and a viscosity. If the next function is cool to 10 degrees centigrade, then the viscosity goes away and the compressibility becomes a fourth rank tensor relating stress to strain. ",GUID 092ce78c-3b30-4c2c-9b2a-4f7b8d1a7cc5
Timing,20.1,A time interval assigned to a function that defines the duration of activity of the function or the probability distribution for the duration.,"Many probability distributions are used in systems engineering. These may include: normal, log-normal, bernouli, beta, binomial, negative binomial, chi squared, discrete uniformed, erlang, exponential, F, gamma, geometric, Laplace, Poisson, T, triangular, uniform, weibull.",,GUID 85bcb873-4161-4576-9dab-b38428eaa52c
Script,20.2,An executable textual  language statement assigned to a function to define how that function executes,,,GUID a036883d-12bf-4ec1-a0cf-6d8ae0147342
Function Port,20.3,A logical entity to which I/O is bound.,,,GUID 7ec66f7b-b5ae-46b2-9f77-b86674bf8702
Queue,20.4,A storage entity on a function port that accumulate I/O until needed by the function,Triggering I/O is stored in a FIFO queue so that the earliest trigger received activates the function. Non-triggering I/O is stored in a LIFO queue so that the most recent input is used by the function to ensure the input is fresh.,,GUID 245c02d5-4792-4ec2-a70b-1594fc9cba6b
Regular Function Port,20.5,A function port that accepts I/O that does not trigger the function,,,GUID 99c87df1-e6e2-42a7-b142-9bee1a61c9dd
Control Function Port,20.6,A function port that accepts I/O that triggers the function,The constructs regular function port and control function port allows I/O to trigger some function but not others.,,GUID aa20cb8a-8161-4e79-bdbe-fdf62581272d
Resource,20.7,"(1.) the amount of input available to a function or the amount of
output available from it.
(2.) or the amount of property of a system available to a function.",,"Example 1. There exists some number of missiles available to a missile battery available for the function Shoot. Example 2. The function transmit message may be allocated to a satellite system, a fiber optic line, a microwave link, etc. Each of these alternatives has some value of the property bandwidth that may be used by the function.

",GUID f28bad64-038a-4b83-83a9-feef01403967
Function Exit,20.8,A  construct links a functional decomposition to the exit paths identified for the parent function.,,"However, if this function is decomposed, there are Function Exit constructs corresponding to the two exit paths in the higher level function. When one of the Exit constructs is encountered, execution of the decomposition is complete and control is passed to the corresponding exit path at the higher level.

",GUID 23ba9a90-ace8-4bf7-98b9-4436ca122d20
Input Output,21,Elements consumed by a function are Inputs and those generated by a function are Outputs.,"The name Input/Output or I/O is used because a given I/O entity is generated by one function and consumed by another. It is a part of Behavior. In the general case outputs are different things than inputs, and physical properties, behaviors, values, variances and probability distributions can all change. In this general definition Function is an Element of type information and cannot be realized in the physical world except through Elements of type matter or energy that exhibit that function. In the physical world things transform other things. It is this fact of reality that results in the allocation of Function to structure which is really a statement that this particular structure entity exhibits this particular function and it will be used to provide that transformation. The thought pattern is to think of the desired transformation, Function, to consider alternative things that might be used to provide it, and to select among these, using a trade study based on optimization.",I/o may trigger functions and it may terminate functions.,GUID 5763a175-dbb1-450e-bd2b-783facbdc4fd
Function Ordering,22,"Function Ordering imposes how functions execute, which may be sequential, concurrent, traversed iteratively, or lie on separate alternative paths."," It is a part of Behavior. Note that there are several ways to represent function ordering. It may be done with ordering operators and triggering I/O as in classical behavior diagrams or it may be done with events, states, and transitions as done in state machines and state charts. For this fine level of detail it is necessary to intercompare the detailed models in SEDRES in the concept model and those emerging from UML 2.0 development.","A function is activated when all preceding threads of functions are complete. At this point the function examines its inputs. If all triggering inputs are present the function proceeds to do its work. If one or more triggering inputs is absent, the function waits for them to begin doing its work. Triggers that arrive while the functions are running are stored in a FIFO queue. Ordinary I/O that arrives while a function is deactivated is stored in a LIFO queue. If the function is running it is discarded.  A function is deactivated when it completes its work or is deactivated by I/O.",GUID 9ad547f5-e988-49a0-9007-d6ef189a67bc
Ordering Operations,22.1,Function ordering constructions that establish how the functions are ordered,,,GUID f18ea851-08e0-40cd-978e-09844bdecd6e
Replicate,22.2,An ordering operation that replicates a function used many times,Especially useful for distributed systems in which a particular function is realized in many places,,GUID 726be089-7031-4e88-a7d3-f3ac534fe622
And,22.3,An ordering operation pair that establishes concurrency among functions,,,GUID d8472b47-33da-4518-80e5-3a185fe20dcd
And Out,22.4,An ordering operation that shows the branching our among concurrent functions,,,GUID 72da830e-7c39-4c59-b591-28aeb89aa4d9
And In,22.5,An ordering operation that shows the path rejoining among  concurrent functions,,,GUID 3c2b2b1a-3bbc-4cd7-99cf-8fc8feaa829a
Iterate,22.6,An ordering operation that repeats a function or group of functions,,,GUID d468a841-674a-4d1b-9397-a0e200e7e90e
Iterate Limit,22.7,An ordering operation that establishes the set over which the iteration is performed.,,,GUID 07e352d9-5a21-4bb5-b3f2-b49935629bea
Loop,22.8,An ordering operation that repeats a function or group of functions some number of times,,,GUID c87dab2d-31aa-4fbd-be63-b1b34f2bec4f
Loop Limit,22.9,The number  or expression for the number of repetitions in a loop,,,GUID d82677f1-0403-4e56-bbfb-fb16b6d72857
Loop Exit,22.1,The ordering operation that terminates a loop and provides correct continuation of the execution path,,,GUID 47a3959b-848e-44e2-a104-d3218e2476c1
Sequence,,An ordering operator that establishes sequence among functions,,,GUID 9e5c7fdd-cc5c-4a51-a7f5-05fa73fa1f06
Or,22.12,An ordering operator pair that establishes alternative paths for a group of functions,,,GUID 6359b5a1-c96e-4dd0-b6f3-e6e8a1fae06d
Or Out,22.13,The ordering operation that establishes branching of functions and their alternative paths,,,GUID 28270f40-801e-438a-978a-b7b55e6f4e0c
Or In,22.14,The ordering operation that establishes the rejoin of alternative paths,,,GUID a6055bd6-7624-4e0f-847d-5649327d14d2
Multi Exit Function,22.15,A special function with multiple exit conditions that can serve the same purpose as or out,,,GUID 98d53af0-0eb1-4aae-931d-bcd4f66ae3f0
Probability,22.16,"A set numbers, of sum equal to 1.0, that can be assigned toe the several exit paths of an ""or out"" to establish the relative frequency that each path is taken.",,,GUID 3f6933ae-33d7-4046-988b-b19758ee790f
Activation Rules,22.17,The set of rules used by an execution engine in a tool to execute the function based behavior,The same behavior model can produce different execution results if the rules of execution differ between two tools that exchange data. These are the entities that allow recording of the rules used by the tool putting data into the data model.,,GUID 277337bd-314a-4d73-bd83-a28f9f81fb1b
Start Rules,22.18,The activation rules that establishes when a function begins to execute,,,GUID 4cb8326b-af1a-4043-a9a2-75eb26bb2c95
Run Rules,22.19,The activation rules that establishes how the function executes,,,GUID 0e928820-f980-4a94-ae96-e544cd49cb2c
Terminate Rules,,The activation rules that establish the conditions under which a functions ceases to execute.,,,GUID 9d8077ad-3d94-4710-8f6a-efd4671f568f
Internal Function,,A kind of function that is allocated to and implemented by System/Structure.," For each I/O there are two such functions, one that generates it and one that consumes it.",,GUID 17064b02-ce2d-4b6e-8feb-8d074230a739
External Function,,A kind of function that is allocated to and implemented by Elements in the environment.,These functions act as sources and sinks of I/O and hence I/O is associated with one function.,,GUID 62d3b635-4c89-4065-8920-7acc86cf2413
Unit,25,Establishes the standard of measure against which the values of physical properties shall be stated.,Several different standards of units are in use around the world. It is essential to state the standard in use.,NASA experienced a failure when different groups used different units without making the necessary transformations.,GUID 42c69589-f306-4d5b-956f-3ae815490158
Property Value,26,A numeric value assigned to  a physical property,"Numeric values, real numbers, can be given as a mean and variance, a probability distribution of values or as a histogram. Many probability distributions are used in systems engineering. These may include: normal, log-normal, bernouli, beta, binomial, negative binomial, chi squared, discrete uniformed, erlang, exponential, F, gamma, geometric, Laplace, Poisson, T, triangular, uniform, weibull.","property values are useful in making comparisons and decisions, in verification, and in validation. Comparisons and decisions can only be made if there are both mean values and variances available. Mean values alone are insufficient.",GUID 322dc398-35db-4712-87e5-24ccea2a0c58
Required Budgeted Property Value,27,"A property value allocated to a part by a requirement, or budgeted to that part by analysis.",Values that shall be met are stated in requirements. The laws of science and engineering interrelate the values of properties and are used to calculate the values appropriate for the parts based on the required value for the whole.,A requirement may state that a space probe shall weigh no more than 150 pounds. In that case the masses of the subsystems must add up to no more than 150 pounds. It is best practice to budget values to the subsystems for guidance of the engineers working on the subsystems.,GUID 75f6971f-f16f-4275-a9b5-237eacc068c0
Calculated Property Value,28,A property value of a whole calculated or estimated from the values of the parts that assemble to make the whole.,The laws of science and engineering interrelate the values of properties and are used to calculate the values for the whole based on the designed values for the parts.,As the designers do their work they arrive at design values for the parts. These values will generally differ from the budgeted values because the designers have detailed information unavailable before. It is necessary to calculate the properties of the whole based on these design values to ensure that  requirements are  by the proposed designs. The mass of the space probe should be 150 pounds are less based on the design data.,GUID 87b3aec1-10ef-48c3-9a06-d623a9e28206
Target Budget Property Value,29,A temporary property value used by a designer as the design work proceeds and different design alternatives are considered.,"As a designer considers several alternatives to meet system requirements, it is necessary to carry along temporary property values to accomplish the design work.","A designer may have been budgeted 40 pounds for his subsystem. H may find a design solution that weighs 38 pounds. In the design process he may consider alternatives that turn out to weigh 36 , 38,  41, and 43 pounds. These are temporary targets. When he examines other budgets he must meet for the subsystem, the designer may conclude that the 38 pound alternative is the best found.",GUID e25bac97-1a34-4f3f-9413-87ac6542ccc4
Measured Property Value,30,A property value established by measurement of an actual part.,These measurements are often made when actual parts first become available. They verify that the parts meet their requirements and they also verify the quality of analysis models used during design.,"A part like a turbine blade has a number of important properties critical to the performance of a jet engine, These include aerodynamic efficiency, weight, moment of inertia, vibration spectra, mean-time-between-failure, and corrosion resistance. Important properties are predicted during design with analysis. Measurement is made as soon as possible.",GUID be52f143-0525-400a-87a6-df9fbab22fa2
Model Parameter,31,a formally declared variable of the analytical model provided for an external application to populate at execution time in a computing environment,Physical properties are represented in equations by parameters.,"In Spice, temperature is a Model parameter that may be set at the execution time. ",GUID ae47adc6-2b62-43dd-95cf-987ab848a542
Parameter Assignment,32,Provides actual values for characteristics declared formally by the model parameter.,Some parameters are left in parametric form and are calculated. Others are supplied values to fully specify the equations.,,GUID be14ac19-8859-44f3-84c7-47b4391168e8
Analytical Representation,33,Is the association of specific properties of specific system assemblies with an analytical model in order to unambiguously characterize the performance of a specific part.,to perform a calculation it is necessary to associate parameters with other elements of equations.,,GUID 4c0526be-a6b4-42e7-864b-768a79b1053a
Analytical Model,34,Provides a mathematical description of the properties of a system.,An analytical model may be a library model. ,,GUID bde08ae2-3c5d-4b84-a1a6-1babaa574840
Functional Requirement,35,States what the shall be done by the system to which it is allocated.,,,GUID 6fdb074b-c346-4751-aa11-8daa3501f46f
Performance Requirement,36,States a time duration or a time probability for the completion of a functional requirement or a function as a modeling element.,,,GUID a98d2dfe-f9f4-4ba7-a36c-71c692a6cab7
Physical Property Requirement,37,States a Physical Property that shall be exhibited by the System or System Assembly to which it is assigned.,,,GUID da96bc12-3018-4dcb-8d0f-8d7d961a7d1e
Interface Requirement,38,"States the characteristics of the Interface to which it is assigned. Note that it includes the geometric description, I/O description, protocols that must be met, assemblies of parts required to join two ports, allowable defect characteristics, etc.",,,GUID 997f96ee-f16b-4cbd-b60e-7f2b556ec507
Imposed Design Requirement,39,States particular Elements that shall be used in the design of the System or Part,,,GUID b2bd8d5a-4243-4d40-b1de-dbbbb05ad128
Reference Requirement,40,"States a reference to a source of additional requirements that shall be met by the System or Part. Note that the referenced source may be a requirements document, government requirements for safety, security, environmental quality, etc., or a state or federal law.",,,GUID 77bbd20c-9538-4cb1-a9b8-4aaa99d2a798
Reference Source,41,"Any requirements document, government regulation or law that contains applicable requirement.",,,GUID 270a545c-e53a-40a1-b2f3-f365f39f60ce
Effectiveness Measure,42,"States an optimization condition that a system shall meet. Note that Requirements define the domain of the solution, the solution space. The Effectiveness Measures drive the solution to a particular region in that space. The effectiveness measures are tightly related to stakeholder Needs. Example: the requirements differences between a PC and a laptop are largely in the laptop optimization conditions for minimum weight, minimum thickness, and maximum battery life. These criteria are some of those that customers (one of the kinds of stakeholder) consider in deciding what to purchase.",,,GUID 894bf5ac-677c-45fe-812f-521fc7b43f9a
Optimization Direction,43,"States the direction of optimization, maximize or minimize, for an Effectiveness Measure. Example: for a laptop computer weight and thickness are minimized and battery life is maximized.",,,GUID ed0196f9-3523-4aa4-89d0-d94f190b08a4
Weight,44,"Relative importance of a particular Effectiveness Measure. Note; weights are often expressed in a numerical form. Example: they fix the relative importance in trade off weight, thickness, and battery life. How many minutes of battery life are worth how many tenths of a pound in weight.",,,GUID b3418771-0fdd-4e30-b92b-15b4e4bb1d99
Regularization Function,45,an analytic expression that combines effectiveness measures with weights to produce a single number for the goodness of a design option. Note: this corresponds to the regularization function used in optimal control design and in statistical optimization of processes.,,,GUID bd201b4a-fd9c-4c49-8fb8-b0f00cf1abf3
Verification Requirement,46,"Statement of how a system design or instance shall be shown by the development organization using test, analysis, inspection ,  demonstration, simulation, similarity, sampling, or other method to meet a requirement allocated to the system. Note that this is a requirement on the development organization and not on the system. Note that this is performed to confirm that the deployed system will meet the requirements.",,,GUID dfe9296e-2059-4455-87de-1181e947dec1
Verification Event,47,"Occurrence (with date, performer and result) of a comparison of a requirement against the test, analysis, or inspection results of a design or instance of a system.",,,GUID 7214b58b-c9b4-443b-a11d-c12d65b8c0c6
Verification Procedure,48,"Describes the process used to compare a requirement against the test, analysis, or inspection results of a design or instance of a system. Example: for a complex digital system the procedure may require the application of a suite of test vectors to the digital system along with environmental tests involving temperature stress and vibration. Example: for a complex metal system the  procedure may require the application of several nondestructive tests to ensure that there are no flaws preset that will cause failure.",,,GUID 0f9e5ecc-5879-4ce6-bd11-24e326b46019
Verification Configuration,49,"Arrangement of system and infrastructure necessary to perform the test, analysis, or inspection of a design or instance of a system.",,,GUID e529be43-e194-4b34-9fdc-184ddd9d0420
Verification Plan,50,"The schedule of tasks, task durations, start times, end times, task inputs, task outputs, goals, and resources (both personnel and infrastructure) to perform the test, analysis, or inspection of a design or instance of a system.",,,GUID 6731adad-c3bd-4cc5-915c-72be09928752
Organization,51,"Description of the roles of persons in a group or team. Note that this is a subclass of Part, definition (19).",,,GUID 34089d73-697e-4b02-8480-b3c943f7cf53
Issue,52,Any question raised concerning the system or the system development.,,,GUID b09db8ec-f421-48e4-b50d-1352b4bd1ba5
Risk,53,Likelihood and impact of failure to meet any technical or development program goal.,,,GUID 63705775-df4e-468a-b46a-c788752ac3d9
Verification Status,54,"Describes the state of a Verification Requirement as Not Yet Planned, Planned, In Progress, Completed - Satisfactory, or  Completed - Unsatisfactory. Example: for a complex digital system the procedure may require the application of a suite of test vectors to the digital system along with environmental tests involving temperature stress and vibration. Example: for a complex metal system the  procedure may require the application of several nondestructive tests to ensure that there are no flaws preset that will cause failure.",,,GUID 720fe3ea-01db-4668-8d02-a06b800bb7b4
Validation Requirement,55,"Statement of how a system requirement, design or instance shall be shown by the development organization to meet Stakeholder Needs. Note that this is to confirm that the requirements are suitable for the marketplace. Example: Proctor and Gamble recently acquired an electric toothbrush product, SpinBrush, from four Cleveland area entrepreneurs. Out of a panel of twenty-four consumers, twenty three raved about the product. Sales have been sufficient to boost P&G to #1 position in US oral care.",,,GUID 2783d5ab-6c0e-4092-adc8-047d0d753e64
Validation Event,56,"Occurrence (with date, performer and result) of a comparison of a Requirement against the stakeholder needs.",,,GUID 1fd9144a-1749-4503-b92d-658519c21ba1
Validation Procedure,57,"Describes the process used to compare a Requirement against Stakeholder Needs. Note that this is a requirement on the development organization and not on the system. Note that the procedures may include stakeholder and market surveys, and test marketing.",,,GUID 28be01e6-8d4f-4380-910b-53dd6e83f89a
Validation Infrastructure,58,Arrangement of requirement information and related infrastructure necessary to assess correspondence with stakeholder needs and market realities.,,,GUID 6913c568-726b-4e3c-963e-b9ee4a2511ef
Validation Plan,59,"The schedule of tasks, inputs, outputs, goals, and resources, both personnel and infrastructure to perform the comparison of Requirements against Stakeholder Needs..",,,GUID 17287b88-15ed-4021-87d0-10bf1dec6984
Validation Status,60,"Describes the state of a Validation Requirement as Not Yet Planned, Planned, In Progress, Completed - Satisfactory, or  Completed - Unsatisfactory. Note: entire new product lines have been abandoned after completed development because of unsatisfactory consumer panel responses and unsatisfactory test marketing.",,,GUID 937b89b6-6ed0-432b-baf5-0b742e651e73
