Obrien l 2009 a framework for scope cost and effort

• O’Brien, L. (2009). A Framework for Scope, Cost and Effort Estimation for Service Oriented Architecture (SOA) Projects. Softw are Engineering Conference, 2009.
ASWEC '09. Australian ― .
OPS 935: Project Management

Sources:
• Jørgensen, M. (2004). Top-down and bottom-up expert estimation of software development effort. Information and Software Technology. Vol.46, Iss.1; pp.3 – 16.
• Kim, Y.H., Sting, F.J., Loch, C.H. (2014). Top-down, bottom-up, or both? Toward an integrative perspective on operations strategy formation. Journal of Operations
Management. Vol.32, Iss.7/8; pp.462-474.
• Stamelos, I., Angelis, L., Morisio, M., Sakellaris, E., Bleris, G.L. (2003). Estimating the development cost of custom software. Information and Management. Vol.40,
Iss.8; pp.729 – 741.
• Amaral Féris, M.A. (2015). Enhancing the Quality of Planning of Software Development Projects. Australian National University (A NU) ―
Expert judgment is the most commonly used method for software effort estimations in
planning.
(Stamelos et al., 2003)
Experts can examine a project from a broad view to provide the effort estimation
( top – down approach ) or by decomposing the project into activities , estimating them
individually and then calculating the sum of all activities ( bottom – up approach ).
(Shepperd and Cartwright, 2001; Jørgensen, 2004)
How to estimate costs?
OPS 935: Project Management

OPS 935: Project Management
Cost planning table
Identify all project costs
WBS
Code
Task
(What?)
Date
(When?)
NRE
(How Much?)
Labour
$
$
Travels
$
$
Contractors
$
$
Equipment
$
$
Total $
Procurement
(week 8)

Cost of quality
Types
Source: ASQ –
OPS 935: Project Management
There are four types of costs associated the quality of products or services:
• Prevention , to keep failure and appraisal costs to a minimum.
• Appraisal , to determine the degree of conformance to quality requirements.
• Internal failure , associated to remedy defects discovered before the product or service
is delivered to the customer (e.g. waste, scrap, rework and failure analysis).
• External failure , associated to defects found after the customer receives the product or
service.
Internal Failure External Failure
Cost of non-conformance
(or cost of failure of control)
Total Quality
Costs
Prevention Appraisal
Cost of conformance
(or cost of control)

Action plan table
OPS 935: Project Management
WBS
Code
Task
(What?)
Problem to address
(Why)
Responsible
(Who)
Date
(When)
<task 1> <problem 1> <name 1> <date 1>
<task 2> <problem 2> <name 2> <date 2>
<task 3> <problem 3> <name 3> <date 3>
… … … …
<task n> <problem n> <name n> <date n>
Gantt chart
(week 5)
Gantt chart
(week 5)
OBS
(week 7)

Week 7
OPS 935: Project Management

<name 2>
<role 2>
<name 5>
<role 5>
<name 7>
<role 7>
<name 1>
<role 1>
Source: PMI (2017). A Guide to the Project Management Body of Knowledge (PMBOK Guide) – 6th ed., Project Management Institute, Philadelphia, PA.