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 about the e-r diagram, Explain about the E-R Diagram Entity-rel...

Explain about the E-R Diagram Entity-relationship (E-R) diagram is detailed logical representation of data for an organisation. It is data oriented model of a system while DFD

Explain the idea behind albrecht''s function points measure, Question: ...

Question: (a) Consider that every software failure can be classified as either • Syntactic, • Semantic, • System crash. Suppose additionally that every system crash fa

What is program control instruction, What is Program Control Instruction ...

What is Program Control Instruction A program control type of instruction, when implemented, may change the address value in the program counter and cause the flow of control t

Explain the static testing and dynamic testing, Static testing and dynamic ...

Static testing and dynamic testing Static testing is checking the application without actually running the application while dynamic testing checks the application by running i

What does modality in data modeling indicates, What does modality in data m...

What does modality in data modeling indicates? Modality shows whether or not a particular data object must participate in the relationship.

Explain data accuracy, Data accuracy Don't collect redundant data  T...

Data accuracy Don't collect redundant data  The questions to be answered should be decided in advance and the needed data identified. Tell people why the data is being co

Explain the term - code complete, Explain the term - Code Complete - Ph...

Explain the term - Code Complete - Phase of development where functionality is implemented completely with only bug fixes remaining. - All functions from functional specific

How do software myths affect a software process, Q 1 Define a software proc...

Q 1 Define a software process. How do software myths affect a software process? Ans: A Software process is a Coherent set of activities for designing, specifying, implementin

Discuss software characteristics, Q. Discuss any two software characteristi...

Q. Discuss any two software characteristics. Ans. Software is not manufactured : The life of software is start from concept exploration to the retirement of the software prod

What problems arise if two modules have high coupling, What problems arise ...

What problems arise if two modules have high coupling? Coupling means the interconnection of dissimilar modules with each other or we can say, it tells about the interrelations

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