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 in detail about data modelling, Explain in detail about data modell...

Explain in detail about data modelling. Data modeling makes use of the ERD. Having of 3 interrelated information. The data object. Attributes.  Relationsh

Explain information flow index, Q. Explain Information Flow index? Inf...

Q. Explain Information Flow index? Information Flow index Information flow metrics are practical to the components of a system design. For any component A We are able to defi

Explain iso 9000, Explain ISO 9000 ISO 9000 An international set o...

Explain ISO 9000 ISO 9000 An international set of standards for quality management. Applicable to a range of organisations from manufacturing to service industries.

Define the level 1 of maturity model, Define the Level 1 of maturity model ...

Define the Level 1 of maturity model At this maturitylevel,software is developed an ad hoc basis and nonstrategic technique is used for its development. Success of developed s

What is a process modeling and management tool, What is a process modeling ...

What is a process modeling and management tool? Process modeling and management tools are used to show the key elements of a process so it can be better understood. Such tools

Define system modelling, Define System Modelling? Define the process...

Define System Modelling? Define the processes that provide the needs of the view under consideration. Shows the behaviour of the processes and the assumptions on which t

What are the rules for making DFD, What are the Rules for making DFD   ...

What are the Rules for making DFD   The below factors must be considered when making DFDs:  1.   Keep a note of all processes and external entities. Give unique names to th

Explain difference between test plan and master test plan, What is the diff...

What is the difference between Test Plan and Master Test Plan. Master Test Plan - i.) It is mandatory in all projects. ii.) It provides strategy to be used to test the

Define test methodology and test scenario, Define Test Methodology and  Te...

Define Test Methodology and  Test Scenario Testing methodology verifies how an application will be tested and what will be tested. Example of methodologies: waterfall, agile

Explain acceptance testing and beta testing, Q. Explain acceptance testing ...

Q. Explain acceptance testing and beta testing? Acceptance Testing as well as Beta testing: System tests are designed to authenticate a fully developed system to guarantee th

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