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

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

Explain respiratory quotient, Explain Respiratory quotient? Ans) Respira...

Explain Respiratory quotient? Ans) Respiratory quotient is the ratio among the carbon-dioxide used in photosynthesis to the quantity of oxygen liberated in respiration.

Explain communicational cohesion, Communicational cohesion : Communicationa...

Communicational cohesion : Communicational cohesion is when parts of a module are grouped because they operate on the similar data (e.g. a module which operates on the similar reco

Illustrate exploratory testing, Illustrate exploratory testing. - In ex...

Illustrate exploratory testing. - In exploratory testing approach testers are involved in maximum test execution and minimum planning. - Planning includes creation of a test

Structured analysis model, Structured Analysis Model Structured  analy...

Structured Analysis Model Structured  analysis is the  most  broadly  used  of  requirements  modeling  techniques  relies  on flow modeling and data modeling to established t

Explain bottom up design, Bottom up design: This design leads to a style o...

Bottom up design: This design leads to a style of design where we decide how to join these modules to give larger ones; to combine those to give even larger ones, and so on, till

The design of the software., Software Engineering class assignment The ...

Software Engineering class assignment The design of the software. You must do 2 things: (1) report of the software design, (2) implement the software as per the design, and

Applications software, APPLICATIONS SOFTWARE: As has been mentioned ea...

APPLICATIONS SOFTWARE: As has been mentioned earlier, software may conveniently be divided into: systems software (i.e., programs designed to control the execution of other pr

What are the profits of vertical partitioning, What are the profits of vert...

What are the profits of vertical partitioning? i. These are very easy to maintain changes. ii. They decreased the change impact and error propagation.

Software life cycle, A) In terms of maintenance in software life cycle, doe...

A) In terms of maintenance in software life cycle, does RUP or agile approach give  better support? Describe your answer.   B) Explain how agile development approach and RUP

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