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

Explain practical process quality, Practical process quality Explain pr...

Practical process quality Explain process standards such as how reviews should be conducted, configuration management, etc. Monitor the development process to make sure that

Determine the levels of capability maturity model, Determine the levels of ...

Determine the levels of Capability Maturity Model(CMM). Capability Maturity Model(CMM) Level 1:Initial - Few processes are explained  and individual efforts are taken. Le

Illustrate detailed cocomo model, Q. Illustrate Detailed COCOMO model? ...

Q. Illustrate Detailed COCOMO model? Detailed COCOMO it incorporates all characteristics of the intermediate version with an assessment of the cost driver's impact on every ste

Explain applicability, Applicability: It is another significant characteri...

Applicability: It is another significant characteristic of a model. The model should be judged by its degree of applicability across software products that change in size, structu

What are the principles of testing, What are the principles of testing ...

What are the principles of testing Below are some of the principles of testing:  i)  All tests must be performed according to user requirements.  ii)  Planning of tests m

Project requirements, Leader: Aim/vision of project. Business plan, Screenc...

Leader: Aim/vision of project. Business plan, Screencast coordination, lines of communication, feedback, must give updates during  lecture slot. Evaluated, in part, on how well who

Discuss the various strategies of design, Discuss the various strategies of...

Discuss the various strategies of design.  The design strategies are:      Functional design:   The system is designed from a functional viewpoint, initialising from with a

Project, hello, i am struggling with my final year project and i dont have ...

hello, i am struggling with my final year project and i dont have that huge amount of time to do it??

Differentiate between function oriented design, Q. Differentiate between fu...

Q. Differentiate between function oriented design and object oriented design. Ans. Function oriented design:- Function oriented design strategy relies on decayed the system 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