This document discusses software cost estimation. It covers fundamentals of cost estimation including cost components. It discusses cost estimation during the software lifecycle and the general process. It then describes several methods for cost estimation - algorithmic/parametric models, expert judgment, top-down, bottom-up, analogy, and price to win. It stresses the importance of accurate cost estimation and concludes by listing references.
COCOMO Model
Key parameters which define the quality of any software
Modes of development
Boehm’s definition of systems
Types of Models
Advantages
disadvantages
System Testing. SYSTEM TESTING is a level of software testing where a complete and integrated software is tested. The purpose of this test is to evaluate the system's compliance with the specified requirements. system testing: The process of testing an integrated system to verify that it meets specified requirements.
Unit testing is often automated but it can also be done manually. Debugging is a process of line by line execution of the code/ script with the intent of finding errors/ fixing the defects.
COCOMO Model
Key parameters which define the quality of any software
Modes of development
Boehm’s definition of systems
Types of Models
Advantages
disadvantages
System Testing. SYSTEM TESTING is a level of software testing where a complete and integrated software is tested. The purpose of this test is to evaluate the system's compliance with the specified requirements. system testing: The process of testing an integrated system to verify that it meets specified requirements.
Unit testing is often automated but it can also be done manually. Debugging is a process of line by line execution of the code/ script with the intent of finding errors/ fixing the defects.
PMBOK defines an estimates as a quantitative assessment of the likely amount or outcome. Precise estimating in today’s business environment is crucial to the success of any project. A well compiled estimate sets the groundwork for successful project planning, and management of time, cost, and resources.
For the project management from available different estimation methods which one you should select and why. This will help you compare estimation methods like exerpt judgement, one point estimation, three point estimation, cocomo, top down estimation, bottom up estimation, etc. to identify time, efforts and cost with examples.
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Metrics serve as important indicator of the efficiency and effectiveness of software process. Analysis of defined metrics helps identify area of improvement and devise subsequent actions.......Read more
How Should We Estimate Agile Software Development Projects and What Data Do W...Glen Alleman
Estimating techniques for an acquisition program progresses from analogies to actual cost method as the program matures and more information is known. The analogy method is most appropriate early in the program life cycle when the system is not yet fully defined.
Understand the importance of project cost Organization.
Explain basic project cost Organization principles, concepts, and terms.
Discuss different types of cost estimates and methods for preparing them.
A Review of Agile Software Effort Estimation MethodsEditor IJCATR
Software cost estimation is an essential aspect of software project management and therefore the success or failure of a software
project depends on accuracy in estimating effort, time and cost. Software cost estimation is a scientific activity that requires knowledge of a
number of relevant attributes that will determine which estimation method to use in a given situation. Over the years various studies were done
to evaluate software effort estimation methods however due to introduction of new software development methods, the reviews have not
captured new software development methods. Agile software development method is one of the recent popular methods that were not taken
into account in previous cost estimation reviews. The main aim of this paper is to review existing software effort estimation methods
exhaustively by exploring estimation methods suitable for new software development methods.
This is a Software Estimation Guide for Practitioners, It includes information about the Software Estimation Process, Complexities, Estimation Methods (Size, Effort, Cost) and Techniques (Function Point, COCOMO and the Use Case based Estimation)
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
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About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
TECHNICAL TRAINING MANUAL GENERAL FAMILIARIZATION COURSEDuvanRamosGarzon1
AIRCRAFT GENERAL
The Single Aisle is the most advanced family aircraft in service today, with fly-by-wire flight controls.
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The family offers a choice of engines
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
COLLEGE BUS MANAGEMENT SYSTEM PROJECT REPORT.pdfKamal Acharya
The College Bus Management system is completely developed by Visual Basic .NET Version. The application is connect with most secured database language MS SQL Server. The application is develop by using best combination of front-end and back-end languages. The application is totally design like flat user interface. This flat user interface is more attractive user interface in 2017. The application is gives more important to the system functionality. The application is to manage the student’s details, driver’s details, bus details, bus route details, bus fees details and more. The application has only one unit for admin. The admin can manage the entire application. The admin can login into the application by using username and password of the admin. The application is develop for big and small colleges. It is more user friendly for non-computer person. Even they can easily learn how to manage the application within hours. The application is more secure by the admin. The system will give an effective output for the VB.Net and SQL Server given as input to the system. The compiled java program given as input to the system, after scanning the program will generate different reports. The application generates the report for users. The admin can view and download the report of the data. The application deliver the excel format reports. Because, excel formatted reports is very easy to understand the income and expense of the college bus. This application is mainly develop for windows operating system users. In 2017, 73% of people enterprises are using windows operating system. So the application will easily install for all the windows operating system users. The application-developed size is very low. The application consumes very low space in disk. Therefore, the user can allocate very minimum local disk space for this application.
Automobile Management System Project Report.pdfKamal Acharya
The proposed project is developed to manage the automobile in the automobile dealer company. The main module in this project is login, automobile management, customer management, sales, complaints and reports. The first module is the login. The automobile showroom owner should login to the project for usage. The username and password are verified and if it is correct, next form opens. If the username and password are not correct, it shows the error message.
When a customer search for a automobile, if the automobile is available, they will be taken to a page that shows the details of the automobile including automobile name, automobile ID, quantity, price etc. “Automobile Management System” is useful for maintaining automobiles, customers effectively and hence helps for establishing good relation between customer and automobile organization. It contains various customized modules for effectively maintaining automobiles and stock information accurately and safely.
When the automobile is sold to the customer, stock will be reduced automatically. When a new purchase is made, stock will be increased automatically. While selecting automobiles for sale, the proposed software will automatically check for total number of available stock of that particular item, if the total stock of that particular item is less than 5, software will notify the user to purchase the particular item.
Also when the user tries to sale items which are not in stock, the system will prompt the user that the stock is not enough. Customers of this system can search for a automobile; can purchase a automobile easily by selecting fast. On the other hand the stock of automobiles can be maintained perfectly by the automobile shop manager overcoming the drawbacks of existing system.
2. Contents
Fundamentals of Software Cost Estimation &
Pricing
Cost Estimation During the Software Life Cycle
Software Cost Estimation Process
Methods for Cost Estimation
Conclusion
References
3. Fundamentals of Software Cost Estimation
& Pricing
Hardware and software costs.
Travel and training costs.
Effort costs (the dominant factor in most
projects)
The salaries of engineers involved in the project;
Social and insurance costs.
Effort costs must take overheads into account
Costs of building, heating, lighting.
Costs of networking and communications.
Costs of shared facilities (e.g library, staff
restaurant, etc.).
Software Cost Components
4. Fundamentals of Software Cost Estimation
& Pricing
Costing & Pricing
Estimates are made to discover the cost, to the
developer, of producing a software system.
There is not a simple relationship between the
development cost and the price charged to the
customer.
Broader organisational, economic, political and
business considerations influence the price
charged.
5. Fundamentals of Software Cost Estimation
& Pricing
Software Pricing Factors
Market
opportunity
A development organisation may quote a low price because it
wishes to move into a new segment of the software market.
Accepting a low profit on one project may give the opportunity
of more profit later. The experience gained may allow new
products to be developed.
Cost estimate
uncertainty
If an organisation is unsure of its cost estimate, it may increase
its price by some contingency over and above its normal profit.
Contractual terms A customer may be willing to allow the developer to retain
ownership of the source code and reuse it in other projects. The
price charged may then be less than if the software source code
is handed over to the customer.
Requirements
volatility
If the requirements are likely to change, an organisation may
lower its price to win a contract. After the contract is awarded,
high prices can be charged for changes to the requirements.
Financial health Developers in financial difficulty may lower their price to gain
a contract. It is better to make a smaller than normal profit or
break even than to go out of business.
6. Cost Estimation During the Software Life Cycle
Cost estimation should be done throughout the
software life cycle to allow for refinement
Need effective monitoring and control of the
software costs to verify and improve accuracy of
estimates
At appropriate level of detail
Gathering data should not be difficult
Success of a cost estimate method is not
necessarily the accuracy of the initial estimates,
but rather the rate at which estimates converge to
the actual cost
7. General steps for Cost Estimation
Establish Plan
What data should we gather
Why are we gathering this data
What do we hope to accomplish
Do cost estimation for initial requirements
Decomposition
Use several methods
There is no perfect technique
If get wide variances in methods, then should re-
evaluate the information used to make estimates
Do re-estimates during life cycle
Make any required changes to development
Do a final assessment of cost estimation at the end
of the project
8. Software Cost Estimation Process
Definition
A set of techniques and procedures that is used to
derive the software cost estimate
Set of inputs to the process and then the process will
use these inputs to generate the output
Input & Output for the Estimation Process
9. Methods for Software Cost Estimation
Algorithmic (Parametric) model
Expert Judgment (Expertise Based)
Top – Down
Bottom – Up
Estimation by Analogy
Price to Win Estimation
10. Algorithmic (Parametric model)
Use of mathematical equations to perform software
estimation
Equations are based on theory or historical data
Use input such as SLOC, number of functions to
perform and other cost drivers
Accuracy of model can be improved by calibrating
the model to the specific environment
Advantages
Generate repeatable
estimations
Easy to modify input data
Easy to refine and
customize formulas
Objectively calibrated to
experience
Advantages & Disadvantages
Disadvantages
Unable to deal with
exceptional conditions
Some experience and
factors can not be
quantified
Sometimes algorithms
may be proprietary
11. Expert Judgment
Capture the knowledge and experience of the practitioners and
providing estimates based upon all the projects to which the expert
participated.
Examples
Delphi
Developed by Rand Corporation in 1940 where participants
are involved in two assessment rounds.
Work Breakdown Structure (WBS)
A way of organizing project element into a hierarchy that
simplifies the task of budget estimation and control
Advantages
Useful in the absence of
quantified, empirical data.
Can factor in differences
between past project
experiences and requirements of
the proposed project
Can factor in impacts caused by
new technologies, applications
Advantages & Disadvantages
Disadvantages
Estimate is only as good
expert’s opinion
Hard to document the
factors used by the experts
12. Top-Down
Also called Macro Model
Derived from the global properties of the product and
then partitioned into various low level components
Example – Putnam model
Advantages
Requires minimal project detail
Usually faster and easier to implement
Focus on system level activities
Disadvantages
Tend to overlook low level components
No detailed basis
Advantages & Disadvantages
13. Bottom-Up
Cost of each software components is estimated and
then combine the results to arrive the total cost for
the project
The goal is to construct the estimate of the system
from the knowledge accumulated about the small
software components and their interactions
An example – COCOMO’s detailed modelAdvantages & Disadvantages
Advantages
More stable
More detailed
Allow each software group to hand an estimate
Disadvantages
May overlook system level costs
More time consuming
14. Estimation by Analogy
Comparing the proposed project to previously
completed similar project in the same application
domain
Actual data from the completed projects are
extrapolated
Can be used either at system or component levelAdvantages & Disadvantages
Advantages
Based on actual project data
Disadvantages
Impossible if no comparable project had been tackled
in the past.
How well does the previous project represent this one
15. Price to Win Estimation
Price believed necessary to win the contract
Advantages & Disadvantages
Advantages
Often rewarded with the contract
Disadvantages
Time and money run out before the job is
done
16. Conclusion
Accurate software cost estimation is a primary &
essential task for a successful software project
Project costs are being poorly estimated
The accuracy of cost estimation has to be
improved
Data collection
Use of tools
Use several methods of estimation
17. References
Boehm B., Clark B., Horowitz E., Madachy R., Shelby R., Westland C.
(1995). Cost Models for Future Software Life Cycle Processes: COCOMO
2.0, Annals of Software Engineering.
http://sunset.usc.edu/research/COCOMOII/Docs/stc.pdf.
Boehm B., Clark B., Horowitz E., Madachy R., Shelby R., Westland C.
(1995). An Overview of the COCOMO 2.0 Software Cost Model.
http://sunset.usc.edu/research/COCOMOII/Docs/stc.pdf.
Boehm B., Chulani S., Clark B. (1997). Calibration Results of COCOMO
II.1997. http://sunset.usc.edu/publications/TECHRPTS/1998/usccse98-
502/CalPostArch.pdf.
Boehm B., Chulani S., Clark B. (1997). Calibrating the COCOMO II Post
Architecture Model.
http://sunset.usc.edu/Research_Group/Sunita/down/calpap.pdf.
Boehm B., Chulani S., Reifer D., The Rosetta Stone: Making COCOMO 81
Files Work With COCOMO II.
http://sunset.usc.edu/publications/TECHRPTS/1998/usccse98-
516/usccse98-516.pdf.
Chulani, S. (1998). Software Development Cost Estimation Approaches – A
Survey. IBM Research.
Humphrey, W.S. (1990). Managing the Software Process. Addison-Wesley
Publishing Company, New York, NY.