Snippets (text quotes and extracts from authoritative sources)

A Snippet is a short quote or extract (typically a phrase, a sentence, or at most a few sentences) from an authoritative source document such as a specification, technical manual, or design manual. Throughout this site, content is often related to supporting Snippets and each Snippet page links back to the content pages that reference it! The Snippet and Note concepts are very closely related and they support each other.

The Snippet concept is also at the heart of the Parsing Analysis recipe for UML® and SysML®

Kind Snippet quote/extract Source UML keywords SysML keywords Keywords
INFO The stereotype does not override UML token offering semantics, just indicates what happens to the token when it is accepted. When the stereotype is not applied, the semantics is as in UML, specifically, tokens arriving at object nodes do not replace ... OMG Systems Modeling Language (SysML) 1.6 ObjectNode, MultiplicityElement::/upper, InputPin, Action::/input, token Overwrite, «overwrite»
INFO The stereotype does not override UML token offering semantics; it just indicates what happens to the token when it is accepted. When the stereotype is not applied, the semantics are as in UML, specifically, tokens arriving at an object node ... OMG Systems Modeling Language (SysML) 1.6 ObjectNode, ActivityNode::outgoing, InputPin, Action::/input «noBuffer», NoBuffer
INFO The stereotypes of proxy and full ports might be elided in these cases to simplify diagrams. OMG Systems Modeling Language (SysML) 1.6 Port FullPort, "standard" Port, ProxyPort
EXAMPLE, INFO The stereotypes on the object nodes between actions in the figure apply to parameters of the behaviors or operations called by the actions (see the notation for object nodes described in 11.3.1.4, ObjectNode, Variables, and Parameters). OMG Systems Modeling Language (SysML) 1.6 Activity, Behavior, ObjectNode, Parameter, Operation, Variable functional allocation
EXAMPLE, INFO The StraightLineVehicleDynamics constraint block from Figure D.32 has been expanded in Figure D.33. ConstraintNotes are used, which identify each constraint using curly brackets {}. In addition, Rationale has been used to explain the meaning ... OMG Systems Modeling Language (SysML) 1.6 HSUV sample problem, Rationale, ConstraintBlock, constraint property, constraint parameter
SEMANTIC The String value of a StringExpression is obtained by concatenating, in order, the String values of either the operands or the subExpressions, depending on which is given. Unified Modeling Language 2.5.1 Expression, StringExpression, String, value, LiteralString, StringExpression::subExpression, Expression::operand
CONSTRAINT The substrings are given as either a list of LiteralString operands or as a list of StringExpression subExpressions (but it is not allowed to mix the two). Unified Modeling Language 2.5.1 Expression, StringExpression, String, value, LiteralString, StringExpression::subExpression, Expression::operand
INFO The sum of the current going through the two pins adds up to zero (one is the negative of the other), because the components do not create, destroy, or store charge. SysPhS-1.1 Constraint constraint parameter, ConstraintBlock, Block SysPhS
INFO The sum of the fluid flow rates going through the two pipe openings is zero (the fluid is assumed to be incompressible). SysPhS-1.1 Constraint constraint parameter, ConstraintBlock SysPhS, pressure, hydraulics, fluid flow
INFO The system is unstable: the two particles annihilate each other to predominantly produce two or three gamma-rays, depending on the relative spin states. Wikipedia
EXAMPLE, INFO The table shown in Figure D.40 is provided as a specific example of how the «allocate» dependency may be depicted in tabular form, consistent with the automotive example above. OMG Systems Modeling Language (SysML) 1.6 HSUV sample problem, «allocate», Allocate
INFO The tank constraints specify that the pressure in the tank, pressure depends on the height of the fluid level in the tank, fluidHeight, as well as properties of the fluid, fluidDensity. SysPhS-1.1 Constraint constraint parameter, ConstraintBlock SysPhS, pressure, hydraulics, fluid flow
INFO The target flow property type shall be the same as, or a generalization of, a classifier of the item flow or the source flow property type, whichever is more specialized. OMG Systems Modeling Language (SysML) 1.6 InformationFlow ItemFlow
EXAMPLE, INFO The term “context diagram,” in Figure D.4, refers to a user-defined usage of an internal block diagram, which depicts some of the top level entities in the overall enterprise and their relationships. OMG Systems Modeling Language (SysML) 1.6 context diagram, SysML Internal Block Diagram
INFO The test section has an Action owning the decider OutputPin with type Boolean identified by the LoopNode. When the test section has completed execution, if the value on the decider OutputPin is true, then the bodyPart is executed. Otherwise ... Unified Modeling Language 2.5.1 Activity, Activity Diagram, LoopNode, LoopNode::test, LoopNode::bodyPart, LoopNode:decider
INFO The time at which an Action executes and what inputs are accepted by each execution are determined by the kind of Action it is, characteristics of its InputPins, and the Behavior in which it is used. Unified Modeling Language 2.5.1 Activity, Activity Diagram, Action, execution, Action::/input, InputPin, Behavior
EXAMPLE, INFO The top portion of Figure 9-11 shows specializations of the block WaterClient into Bath, Sink, and Shower. These are used as part types in the internal structure of the block House 2 shown in the lower portion of the figure OMG Systems Modeling Language (SysML) 1.6
INFO The Trace stereotype specializes UML4SysML Trace and DirectedRelationshipPropertyPath to enable traces to identify their sources and targets by a multi-level path of accessible properties from context blocks for the sources and targets. OMG Systems Modeling Language (SysML) 1.6 DirectedRelationship::/source, DirectedRelationship::/target, Trace DirectedRelationshipPropertyPath, Trace, AbstractRequirement::/tracedTo
INFO The transition from On to StandBy has a ChangeEvent with an expression indicating that the transition is triggered when u.sigsp [ERROR] is equal to 0. SysPhS-1.1 StateMachine, State, Transition, ChangeEvent, ChangeEvent::changeExpression SysPhS, SysML, Systems Modeling Language
INFO The transition from StandBy to On has a ChangeEvent with an expression indicating that the transition is triggered when u.sigsp [ERROR] is equal to 1 (this is a signal as in signal flow simulation, not as in SysML). SysPhS-1.1 StateMachine, State, Transition, ChangeEvent, ChangeEvent::changeExpression SysPhS, SysML, Systems Modeling Language
INFO The transition from the initial pseudostate to StandBy has a relative TimeEvent with an expression indicating that the transition fires 5 seconds after the initial pseudostate is entered. SysPhS-1.1 StateMachine, Pseudostate, PseudostateKind::initial, PseudostateKind, State, Transition, TimeEvent, TimeEvent::isRelative SysPhS, SysML, Systems Modeling Language
CONSTRAINT The Transitions outgoing from a fork Pseudostate cannot have a guard or a trigger. Unified Modeling Language 2.5.1 Pseudostate, Transition, Transition::guard, Transition::trigger, PseudostateKind::fork
INFO The two up quarks and one down quark of a proton are held together by the strong force, mediated by gluons. Wikipedia
INFO The type of participant properties is shown for clarity, but is always the same as the association end type and can be elided. They are shown with dashed rectangles because they are reference properties. OMG Systems Modeling Language (SysML) 1.6 Port AssociationBlock, ParticipantProperty
RULE The type, ordering, and multiplicity of the argument and result pins of a CallAction shall be the same as the corresponding Parameters. Unified Modeling Language 2.5.1 CallAction, CallBehaviorAction, CallOperationAction, StartObjectBehaviorAction, Parameter, Behavior, Operation, Pin
INFO The United States National Institute of Standards and Technology now recommends the use of the uppercase letter L, a practice that is also widely followed in Canada and Australia. Wikipedia litre, units, scientific unit system, volume, SI unit, SI alternative unit, ISO-80000, Canada, Australia, United States
INFO The upper multiplicity determines the maximum number of values that can be consumed from an InputPin by a single execution of its Action. Unified Modeling Language 2.5.1 Activity, Activity Diagram, Action, Pin, InputPin, Action::/input, MultiplicityElement::/upper, execution
INFO The usage of a constraint binds the parameters of the constraint, such as F, m, and a, to specific properties of a block, such as a mass, that provide values for the parameters. OMG Systems Modeling Language (SysML) 1.6 Constraint ConstraintBlock, SysML Parametric Diagram, constraint parameter, MD:ConstraintParameter, Block, block property, value property mathematics, equation
INFO, NOTATION The usage of a constraint block is distinguished from other parts by a box having rounded corners rather than the square corners of an ordinary part. OMG Systems Modeling Language (SysML) 1.6 «keyword» ConstraintBlock, «constraint», constraint property
INFO The use case diagram describes the usage of a system (subject) by its actors (environment) to achieve a goal, that is realized by the subject providing a set of services to selected actors. OMG Systems Modeling Language (SysML) 1.7beta1 Actor, UseCase::subject, UseCase
EXAMPLE, INFO The use case diagram for “Drive Vehicle” in Figure D.5 depicts the drive vehicle usage of the vehicle system. The subject (HybridSUV) and the actors (Driver, Registered Owner, Maintainer, Insurance Company, DMV) interact to realize the use case. OMG Systems Modeling Language (SysML) 1.6 UseCase, UseCase::subject, Actor, UseCase Diagram HSUV sample problem
INFO The use of namespace containment to specify requirements hierarchies precludes reusing requirements in different contexts since a given model element can only exist in one namespace. OMG Systems Modeling Language (SysML) 1.6 AbstractRequirement, Requirement, composite (compound) requirement
INFO The value of c can ... be found by using the relation c = fλ. Wikipedia light, wavelength, frequency, radio frequency
CONSTRAINT The value to be added is given on the value InputPin, which is required. This InputPin has the same type as the StructuralFeature and a multiplicity of 1..1 (that is, a single value is added). Unified Modeling Language 2.5.1 StructuralFeature, AddStructuralFeatureValueAction, StructuralFeatureAction, InputPin, multiplicity
INFO The values of a connector property are instances of the association block created due to the connector referred to by the connector property. OMG Systems Modeling Language (SysML) 1.6 Connector, AssociationClass ConnectorProperty, AssociationBlock, ParticipantProperty
INFO The values on such object tokens may be used to affect the control of ExecutableNodes that are the targets of such ControlFlows, though the specific meaning of such values is not defined in this specification Semantics of a Foundational Subset for Executable UML Models 1.4 ObjectNode, ObjectNode::isControlType, ControlFlow, token, object token
EXAMPLE, INFO The vehicle system specification contains many text based requirements. A few requirements are highlighted in Figure D.11, including the requirement for the vehicle to pass emissions standards, which is expanded for illustration purposes. OMG Systems Modeling Language (SysML) 1.6 Requirement, HSUV sample problem
EXAMPLE, INFO The Verify relationship is shown on Figure 16-7 using callout notation anchored to the diagram frame, which indicates that the BurnishTest test case verifies the Burnish requirement. OMG Systems Modeling Language (SysML) 1.6 callout, StateMachine HSUV sample problem, SysML specification figure, Requirement, TestCase, Verify requirements engineering, test engineering
INFO The view and the model elements related to the view are passed to the constructor when it is invoked. The method describes how the exposed elements are navigated to extract the desired information. OMG Systems Modeling Language (SysML) 1.6 Dependency, «Create» Expose, View, Viewpoint::/method
INFO The volumetric heat capacity can also be expressed as the specific heat capacity (heat capacity per unit of mass, in J/K/kg) times the density of the substance (in kg/L, or g/mL). Wikipedia volumetric heat capacity, thermodynamics, joule, kelvin, water, celsius
INFO The volumetric heat capacity of a material is the heat capacity of a sample of the substance divided by the volume of the sample. Wikipedia volumetric heat capacity, thermodynamics, joule, kelvin, water, celsius
INFO The water heater is fed from a water distiller in this particular usage, so the modeler knows the output will always be distilled water, rather than other kinds of water. OMG Systems Modeling Language (SysML) 1.6 InformationFlow ItemFlow
INFO The wavelength of infrared light ranges from 0.75 to 300 micrometers. Infrared falls in between visible radiation, which ranges from 380 to 750 nanometers, and submillimeter waves. Wikipedia infrared, infrared astronomy, mirror, lens
INFO The word telescope now refers to a wide range of instruments capable of detecting different regions of the electromagnetic spectrum, and in some cases other types of detectors. Wikipedia telescope, optical telescope, astronomy
INFO The xi and scope properties have the PhSVariable stereotype applied, specifying that their values might vary during simulation. SysPhS-1.1 value property SysPhS, signal processing, amplifier, high-pass filter, low-pass filter
INFO The ~InterfaceBlock stereotype (shall be pronounced: "conjugated interface block") is a specialization of InterfaceBlock that has the same features as its original InterfaceBlock except that its DirectedFeatures and FlowProperties are reversed (conjugated OMG Systems Modeling Language (SysML) 1.6 InterfaceBlock, ~InterfaceBlock, conjugation, ~InterfaceBlock::original, DirectedFeature, FlowProperty, FlowProperty::direction, FlowDirectionKind, DirectedFeature::featureDirection, FeatureDirectionKind
INFO The «rate» stereotype has a rate property of type InstanceSpecification. The values of this property shall be instances of classifiers stereotyped by «valueType» or «distributionDefinition» ... OMG Systems Modeling Language (SysML) 1.6 InstanceSpecification Rate, «rate», Rate::rate
EXAMPLE, INFO The «system» and «external» stereotypes are user defined, not specified in SysML, but help the modeler to identify the system of interest relative to its environment. OMG Systems Modeling Language (SysML) 1.6 context diagram, «system», «external»
INFO The Δ baryons have ... a spin of ​3⁄2 ... Wikipedia
EXAMPLE, INFO The “hybridSUV” lifeline represents another interaction which further elaborates what happens inside the “hybridSUV” when the vehicle is started. OMG Systems Modeling Language (SysML) 1.6 Interaction, Event, Message, Lifeline SysML Sequence Diagram
EXAMPLE, INFO The “refine” relation, introduced in Figure D.12, shows how the Acceleration requirement is refined by a similarly named use case. OMG Systems Modeling Language (SysML) 1.6 UseCase HSUV sample problem, Requirement, Refine
INFO Then it is delivered to a factory, reclassified from a warehouse item to a factory resource (while still being a machine), and records the percentage of time it is operating. OMG Systems Modeling Language (SysML) 1.6 Classifier, Stereotype, Property PropertySpecificType
INFO Then that set shall be included in (or the same as) a set calculated by eliminating duplicates from the collection of values denoted by the subsettedProperty in the same context. Unified Modeling Language 2.5.1 Property, Property::subsettedProperty
INFO There are no precisely defined boundaries between the bands of the electromagnetic spectrum; rather they fade into each other like the bands in a rainbow (which is the sub-spectrum of visible light). Wikipedia electromagnetic radiation, electromagnetic spectrum, visible light, light
INFO there are only two possible values for a spin-1/2 particle: sz = +1/2 and sz = -1/2. These correspond to quantum states in which the spin component is pointing in the +z or −z directions respectively, and are often referred to as "spin up" and "spin down" Wikipedia
INFO There are several large modern telescopes that use a Gregorian configuration such as the Vatican Advanced Technology Telescope, the Magellan telescopes, the Large Binocular Telescope, and the Giant Magellan Telescope. Wikipedia Gregorian reflector, reflecting telescope, reflector, optical telescope, telescope
INFO There are six types of leptons, known as flavours, grouped in three generations. Wikipedia
INFO There are six types, known as flavors, of quarks: up, down, strange, charm, bottom, and top. Wikipedia
INFO There are telescope designs that do not present an inverted image such as the Galilean refractor and the Gregorian reflector. These are referred to as erecting telescopes. Wikipedia optical telescope, telescope, light, image, lens, mirror, erecting telescope
SEMANTIC There are three kinds of ActivityNodes: Unified Modeling Language 2.5.1 Activity, ActivityNode, ControlNode, ObjectNode, ExecutableNode
SEMANTIC There are two kinds of ActivityEdges: Unified Modeling Language 2.5.1 Activity, ActivityEdge, ControlEdge, ObjectFlow
CONSTRAINT There can be at most one initial Vertex in a Region. Unified Modeling Language 2.5.1 PseudostateKind::initial, Region, Vertex
INFO Therefore, the digit "1" may easily be confused with the letter "l". In some computer typefaces, the two characters are barely distinguishable. As a result, L (uppercase letter L) was adopted by the CIPM as an alternative symbol for litre in 1979. Wikipedia litre, units, scientific unit system, volume, SI unit, SI alternative unit, ISO-80000
INFO These connectors specify instances of the association block created within the instances of the block that owns the connector. OMG Systems Modeling Language (SysML) 1.6 ConnectorProperty, Connector, AssociationClass AssociationBlock, ParticipantProperty
INFO These flows are usually the result of some difference in the across variables across a component model. For example, current flowing through a resistor is in response to a voltage difference across the two sides of the resistor. Modelica By Example Modelica, acausal connection
INFO These include modeling either the logical or physical decomposition of a system, and the specification of software, hardware, or human elements. OMG Systems Modeling Language (SysML) 1.6 Block systems engineering, Model-Based Systems Engineering, SysML, Systems Modeling Language, logical decomposition, physical decomposition, functional decomposition, software, hardware, human, human resource
INFO These include relationships for defining a requirements hierarchy, deriving requirements, satisfying requirements, verifying requirements, and refining requirements. OMG Systems Modeling Language (SysML) 1.6 Requirement, SysML Requirements Diagram, Satisfy, DeriveReqt, Copy, Verify requirements engineering
EXAMPLE, INFO These multiplicities may be assumed if not shown on a diagram. To avoid confusion, any multiplicity other than the default should always be shown on a diagram. OMG Systems Modeling Language (SysML) 1.7beta1 Association, AggregationKind, multiplicity, AggregationKind::composite, AggregationKind::shared, MultiplicityElement::upperValue, MultiplicityElement::lowerValue, MultiplicityElement, MultiplicityElement::/lower, MultiplicityElement::/upper, Property::isNavigable(), DirectedRelationship::/target
INFO These specify that the voltage v across the component is equal to the difference between the voltage at the positive and negative pins. The current i through the component is equal to the current going through the positive pin. SysPhS-1.1 Constraint constraint parameter, ConstraintBlock, Block SysPhS
INFO These two extensions are useful for ensuring that the most recent information is available to actions by indicating when old values should not be kept in object nodes, and for preventing fast or continuously flowing values from collecting ... OMG Systems Modeling Language (SysML) 1.6 ObjectNode, Pin NoBuffer, «noBuffer», Overwrite, «overwrite»
INFO These viable solutions are judged by their satisfaction of a series of measures or cost functions. These measures describe the desirable characteristics of a solution. They may be conflicting or even mutually exclusive. Wikipedia trade study, trade-off study
INFO They are also classified as fermions, i.e., they have half-integer spin. Wikipedia
INFO They cannot be behavioral ports, or [be] linked to internal parts by binding connectors, because these constructs imply identity with the owning block or internal parts. OMG Systems Modeling Language (SysML) 1.6 Port::isBehavior, Port, Element::owner, internal part FullPort, Block, part property, MD:PartProperty, BindingConnector, owning Block
INFO They encompass potential or actual physical assets, processes, people, places, systems, devices and the natural environment. ANZLIC 2019 - Principles for Spatially Enabled Digital Twins of the Built and Natural Environment in Australia
INFO They were used for both terrestrial applications and astronomy. Wikipedia telescope, optical telescope, astronomy
CONSTRAINT, INFO This aggregate is not a separate element of the system, and only groups the internal parts for purposes of binding to the proxy port. OMG Systems Modeling Language (SysML) 1.6 Port, part, Feature ProxyPort, part property, MD:PartProperty, BindingConnector
INFO This allows a value property (such as an engine displacement) that may be deeply nested within a containing hierarchy (such as vehicle, power system, engine) to be referenced at the outer containing level (such as vehicle-level equations). OMG Systems Modeling Language (SysML) 1.6 Constraint ConstraintBlock, SysML Parametric Diagram, block property, NestedConnectorEnd, pathname dot notation, nested Property mathematics, equation
INFO This can be achieved in several ways. For instance by making it behavioral, by binding it to a fully specified internal part or by having all its properties individually bound to internal parts. OMG Systems Modeling Language (SysML) 1.6 Port::isBehavior ProxyPort
EXAMPLE, INFO This diagram expresses only the nominal states. Exception states, like “acceleratorFailure,” are not expressed on this diagram. OMG Systems Modeling Language (SysML) 1.6 State, StateMachine, StateMachine Diagram HSUV sample problem black box, Object Constraint Language
INFO This image may be ... viewed through an eyepiece, which acts like a magnifying glass. The eye then sees a ... magnified virtual image of the object. Wikipedia optical telescope, telescope, light, image, lens, mirror
INFO This image may be ... viewed through an eyepiece, which acts like a magnifying glass. The eye then sees an inverted magnified virtual image of the object. Wikipedia optical telescope, telescope, light, image, lens, mirror
INFO This image may be recorded or viewed through an eyepiece, which acts like a magnifying glass. The eye then sees an inverted [DISPUTED] magnified virtual image of the object. Wikipedia optical telescope, telescope, light, image, lens, mirror
INFO This important distinction enables blocks to be interconnected in different ways depending on its usage context. OMG Systems Modeling Language (SysML) 1.6 ItemFlow
INFO This includes the direction of flow properties on nested ports, and if the port is full and its type is unencapsulated, ports on parts of the port, recursively. The arrows are perpendicular to the boundary lines they overlap. OMG Systems Modeling Language (SysML) 1.6 Port ProxyPort, FullPort, FlowProperty, FlowProperty::direction, FlowDirectionKind::in, FlowDirectionKind::out
INFO This is a major advantage for solar telescopes, where a field stop (Gregorian stop) can reduce the amount of heat reaching the secondary mirror and subsequent optical components. Wikipedia telescope, Gregorian reflector, field stop, optics, primary mirror, secondary mirror
INFO This is a Transition that originates in the history Pseudostate and terminates on a specific Vertex (the default history state) of the Region containing the history Pseudostate. This Transition is only taken if execution leads to the history Pseudostate a Unified Modeling Language 2.5.1 State, StateMachine, Vertex, Transition, Pseudostate, history, PseudostateKind::deepHistory, PseudostateKind::shallowHistory, default history mechanism
INFO This is typically used on an input pin with an upper bound of 1 to ensure that stale data is overridden at an input pin. OMG Systems Modeling Language (SysML) 1.6 ObjectNode, MultiplicityElement::/upper, InputPin, Action::/input, token Overwrite, «overwrite»
INFO This is typically used with fast or continuously flowing data values, to prevent buffer overrun, or to model transient values, such as electrical signals. OMG Systems Modeling Language (SysML) 1.6 ObjectNode, ActivityNode::outgoing, InputPin, Action::/input «noBuffer», NoBuffer
INFO This is why we want to work with across variables that have not been overly differentiated. Modelica By Example Modelica, acausal connection
INFO This means that an Activity model in which non-determinacy occurs may be subject to timing issues and race conditions. It is the responsibility of the modeler to avoid such conditions in the construction of the Activity model, if they are not desired. Unified Modeling Language 2.5.1 ActivityEdge, ActivityNode::outgoing, ActivityNode, token
INFO This means that the complete semantics of the client Element(s) are either semantically or structurally dependent on the definition of the supplier Element(s). Unified Modeling Language 2.5.1 Dependency, Dependency::client, Dependency::supplier, DirectedRelationship, NamedElement
INFO This means that: Not all words appearing between guillemets are necessarily keywords, and words appearing in guillemets do not necessarily represent stereotypes. Unified Modeling Language 2.5.1 «keyword», Stereotype, guillemets UML, MagicDraw UML
EXAMPLE, INFO This means the provided features of ICE are provided by the ctrl port of InternalCombustionEngine, and required by the ice port of PowerControlUnit, while the required features of ICE are required by the ctrl port of InternalCombustionEngine, and provided OMG Systems Modeling Language (SysML) 1.6 Port HSUV sample problem, provided Feature, required Feature, part property, Block
EXAMPLE, INFO This non-normative extension includes stereotypes for an objective function and a measure of effectiveness. The objective function is a stereotype of a ConstraintBlock and the measure of effectiveness is a stereotype of a block property. OMG Systems Modeling Language (SysML) 1.6 custom Stereotype, user defined Stereotype «moe», ConstraintBlock, Block, «objectiveFunction» Measure of Effectiveness, objective function, non-normative
INFO, NOTATION This notation is purely a notational shorthand for a property that could otherwise be shown within a structure of nested property boxes, with the names in the dotted string taken from the name that would appear at each level of nesting OMG Systems Modeling Language (SysML) 1.6 Property multi-level property path, pathname dot notation, nested Property
INFO This portion of concrete syntax is the same as may be shown for values within the UML instance specification notation, but this is the only element of UML InstanceSpecification notation that may be shown in an initial values compartment. OMG Systems Modeling Language (SysML) 1.6 compartment initial values, initialValues compartment, context-specific values
INFO This provides a means for representing activity decomposition in a way that is similar to classical functional decomposition hierarchies. OMG Systems Modeling Language (SysML) 1.6 Activity «activity», SysML Block Definition Diagram, Block functional allocation, functional decomposition
INFO This radioactive decay, known as beta decay, is possible because the mass of the neutron is slightly greater than the proton. Wikipedia neutron
EXAMPLE This single signal carries the temperature, rpm, and knockSensor information of the engine. OMG Systems Modeling Language (SysML) 1.6 Signal
INFO This supports linking the execution of the activity with items that are flowing through the activity or assigned to variables or parameters, and happen to be contained by an object node or assigned to a variable or parameter at the time the link exists. OMG Systems Modeling Language (SysML) 1.6 Association, Classifier, ObjectNode, Variable, Parameter Block, ValueType, SysML Block Definition Diagram