Explain basic execution time model, Software Engineering

Assignment Help:

Q. Explain Basic Execution Time Model?

The model was developed by the J.D. MUSA in 1979(MUSA79) and is based on execution time. It is presumed that failures may occur according to a non-homogeneous Poisson Process (NHPP) Real world events may be described using Poisson processes. Instance of Poisson processes are

- A Number of telephone calls expected in a given period of time

- Expected figure of road accidents in a given period of time

- Expected figure of persons visiting in a shopping mall in a given period of time.

In this model the reduce in failure intensity as a function of the number of failures observed is constant and is given as:

288_Explain Basic Execution Time Model.png

Where Initial failure intensity at the start of execution.

V0 Number of failures experienced, if program is executed for Infinite time period μ Average as well expected number of failures experienced at a given point in time. These models imply a uniform operational profile. If every input class are selected equally often the various faults have an equal probability of manifesting themselves. The correction of whichever of those faults then contributes an equal decrease in the failure intensity. The negative sign publicized that there is a negative slope meaning thereby a decrementing trend in failure intensity.


Related Discussions:- Explain basic execution time model

Show the advantages of incremental model, Q. Show the Advantages of increme...

Q. Show the Advantages of incremental Model? As product is to be conveying in parts total cost of the project is distributed. Limited number of persons is able to be pu

Graphical design notation, Explain any two graphical design notations used ...

Explain any two graphical design notations used in procedural design

Define black box testing strategy, Define black box testing strategy. B...

Define black box testing strategy. Black box testing describes the functional requirements of the software. Test cases are determined on the basis of the requirements or specif

Java, how to get values from list

how to get values from list

What is criticality, What is Criticality? The degree of impact that a ne...

What is Criticality? The degree of impact that a necessity, module, error, fault, failure, or other item has on the operation of a system or development.

Define coupling and discuss various types of coupling, Define coupling and ...

Define coupling and Discuss various types of coupling? Define coupling. Discuss various types of coupling. Ans: A Coupling is the measure of the degree of interdepende

Explain real time system, What is a Real time system? Real time system ...

What is a Real time system? Real time system is a software system in which the correct functionalities of the system are dependent upon results formed by the system and the tim

What is meant by software prototyping, What is meant by software prototypin...

What is meant by software prototyping? Software prototyping is a process of creating a model for the software product. This is developed based on the currently known requiremen

Determine the system integration the life cycle process, Determine the Syst...

Determine the System Integration the life cycle process. It is the process of putting hardware, software and user together to prepare a system. System Installation I

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd