The Valley Research Inc. is contemplating a research and development (R&D) program encompassing five potential research projects named 1, 2, 3, 4, and 5. All the projects are expected to go on simultaneously. The company is constrained from embarking on all projects by the number of scientists it has and the budget available for R&D projects. The company has 23 scientists and $300,000 (three hundred thousand dollars) budgeted for R&D projects. Furthermore, since projects 2 and 5 require the involvement of the same scientists, both of them would not be selected, but either may or may not be selected. The Table below shows the expenses in thousands of dollars, the number of scientists required, and the estimated profit in millions of dollars associated with each project.
(a). Formulate the integer programming model for this problem that will maximize profit. That is, you will define the decision variables, state the objective function, and thirdly, state the constraints.(Hint: This is a 0-1 integer programming problem).
(b). Use the computer software (QM for Windows or its equivalent) to determine the integer optimal solution. From your optimal solution determine the following.
(i) List the optimal projects to be selected for execution.
(ii) The optimal total profit from all the selected projects.
Project |
Expense ($) |
Scientists Required |
Estimated Profit ($Millions) ($1,000,000) |
1 |
60,000 |
7 |
3.0 |
2 |
90,000 |
10 |
7.0 |
3 |
45,000 |
5 |
2.5 |
4 |
47,000 |
6 |
1.6 |
5 |
80,000 |
4 |
5.5 |
When using QM for Windows to solve the problem, select the “integer & mixed integer programming” option from the module listing. While entering your data, also select the 0/1 option in the last row.
The formulas used is shown below:
The solver parameters are shown below:
The result is shown below:
The Valley Research Inc. is contemplating a research and development (R&D) program encompassi...
The Valley Research Inc. is contemplating a research and development (R&D) program encompassing five potential research projects named 1, 2, 3, 4, and 5. All the projects are expected to go on simultaneously. The company is constrained from embarking on all projects by the number of scientists it has and the budget available for R&D projects. The company has 23 scientists and $300,000 (three hundred thousand dollars) budgeted for R&D projects. Furthermore, since projects 2 and 5 require the involvement...
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