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

State the system engineering hierarchy, State the System Engineering Hierar...

State the System Engineering Hierarchy The world view is made up  of a set of domains (Di),which can either be a system or a system of systems. WV = {D1,D2,D3,...........,Dn

What is e-commerce, Question 1 What do you mean by system's state of equil...

Question 1 What do you mean by system's state of equilibrium? Also illustrate the process of stabilising system Question 2 Explain the concept of Planning and Design in syste

What is branch coverage testing, A test method satisfying coverage criteria...

A test method satisfying coverage criteria that needs each decision point at every possible branch to be implemented at least once.

Define about the software development life cycle, Define about the Software...

Define about the Software Development Life Cycle The different steps (known as phases) that are adopted in development of this process are collectively called as Software Devel

Explain process, Explain Process? The work effort that makes a product. ...

Explain Process? The work effort that makes a product. This contains efforts of people and equipment guided by policies, standards, and procedures.

Legacy Challenge, What is the Legacy Challenge in Software Engineering?

What is the Legacy Challenge in Software Engineering?

30 60 90 TRIANGLES, Find the length of the hypotenuse. With a short side of...

Find the length of the hypotenuse. With a short side of radical 3 and a long side with 3 radical 2 Simplify the radical if you can.

Discuss the important issues that a srs must address, Q . Discuss the impo...

Q . Discuss the important issues that a SRS must address. Ans. SRS is the method of establishing the services the system should provide of the system in new it is difficult

Define top-down testing, Define top-down testing. System developed star...

Define top-down testing. System developed starting from most general modules. Testing begins from the most general module.

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