Catto / Topic Map · Final Project Level 6
Final Project · 96 h · Topic 2 of 4

Technical, legal, economic, social and environmental aspects

A project with a net present value of 238 thousand stops being worthwhile if the selling price falls by barely 7 %, but it withstands 40 % more investment. Sensitivity analysis tells you where it pays to refine the estimates.

Technical risk Intellectual property Sensitivity Social impact Life cycle

01The technical aspect

The technical analysis confirms that the product can be made with the available technology, within the deadline and with the project team. It reviews the architecture alternatives, the availability of components and their risk of obsolescence, the existence of more than one supplier for critical parts, the development and test tools needed, and the points of greatest uncertainty, which are best attacked first with prototypes. A list of technical risks with their probability, their impact and a planned action is part of the project, not an appendix.

03The economic aspect

The economic analysis builds the cash flow and calculates the net present value and the internal rate of return, as seen in project evaluation. But each number in the flow is an estimate. Sensitivity analysis moves one variable at a time and measures how much the NPV changes; the tornado diagram ranks the variables from the most influential to the least, and the critical change of each is the one that takes the NPV to zero:

\[ NPV = -I + F \cdot \frac{1 - (1 + k)^{-n}}{k} \] \[ F = V\,(p - c_v) - CF \] With an annual flow F, V units per year, price p, variable cost cv, annual fixed costs CF, investment I, n years and cutoff rate k. Since the NPV is linear in each variable, the critical change is solved directly.
Lab · sensitivity of the net present value

A product with a price of ARS 250, 4000 units per year, a variable cost of ARS 150, fixed costs of ARS 150,000 per year, an investment of ARS 600,000 and a five-year life. Each bar goes from the NPV with the variable decreased to the NPV with the variable increased by the chosen percentage; the center line is the base NPV and the dashed one, zero.

04The social and environmental aspects

The social analysis asks whom the product benefits and whom it may harm: the users, the workers who make it, the community. It includes accessibility, the privacy of the data it collects, the safety of people and the employment it creates or replaces, and it rests on professional ethics. The environmental analysis covers the life cycle: the materials and the manufacturing energy, the consumption during use —which in many devices is the largest impact— and the end-of-life fate as electronic waste, with the criteria seen in environmental management.

05In the laboratory

Activity 1 · Risk list

Build the list of technical risks of the final project with probability, impact and planned action, and rank it.

Activity 2 · Licenses

Review the licenses of all the software libraries the project uses and note what obligations they impose.

Activity 3 · Your own tornado

Make the tornado diagram of the cash flow of the final project and decide which estimate is best to improve first.

06Common mistakes

  • Presenting a single NPV number. Without sensitivity, you do not know how fragile the conclusion is.
  • Using open source without reading the license. Some require releasing the product’s code.
  • Forgetting the consumption during use in the environmental analysis. It often weighs more than manufacturing.
  • Treating the social analysis as a filler paragraph. The privacy and safety of users are requirements.

07Self-assessment

What NPV does the lab project have at 15 %?

About ARS 238,000.

How much can the price fall before the NPV turns negative?

7.1 %.

And how much can the investment increase?

39.7 %.

With which body is an invention patented in Argentina?

The National Institute of Industrial Property (INPI).

08Further reading

  • Nassir Sapag Chain and Reinaldo Sapag Chain. Preparación y evaluación de proyectos. McGraw-Hill. (In Spanish.) The technical, legal, economic and organizational studies, and sensitivity.
  • Karl T. Ulrich and Steven D. Eppinger. Product Design and Development. McGraw-Hill. (Spanish edition: “Diseño y desarrollo de productos”.) Intellectual property and the economics of product development.
  • International Organization for Standardization. ISO 14040: Environmental management — Life cycle assessment — Principles and framework. ISO. The framework for assessing the environmental impact of a product from end to end.
Development of the topic “Technical, legal, economic, social and environmental aspects” of Final Project (Level 6), based on the curriculum of the UTN Electronic Engineering program, 2023 curriculum — Ordinance No. 1849 of the UTN Higher Council. Back to the Topic Map · catto.ar