Please enable JavaScript.

Coggle requires JavaScript to display documents.

INTRODUCTION - Coggle Diagram

- - - - The definition of a life cycle facilitates control over the times in which it is necessary to apply resources of all kinds (personnel, equipment, supplies, etc.) to the project. If the project includes subcontracting parts to other organizations, control of the subcontracted work is facilitated to the extent that those parts fit well into the structure of the phases.
        Quality control is also facilitated if the separation between phases corresponds to points where it must be verified (by means of checks on the partial products obtained).
      - ELEMENTS OF THE LIFE CYCLE
        A life cycle for a project is made up of successive phases made up of planning tasks.
        TYPES OF LIFE CYCLE MODELS
        The scope of the cycle depending on how far the corresponding project goes. A project can comprise a simple feasibility study of the development of a product, or its complete development or, taking things to the extreme, the entire history of the product with its development, manufacture, and subsequent modifications until its withdrawal from the market.
        
        Linear life cycle
        It is the most used, whenever possible, precisely because it is the simplest. It consists of breaking down the global activity of the project into phases that follow one another in a linear way, that is, each one is carried out only once, each one is carried out after the previous one and before the next. With a linear cycle it is easy to divide the tasks between successive teams, and to anticipate the times (adding those of each phase).
        Life cycle with prototyping
        It often occurs in product developments with important innovations, or when the use of new or little-proven technologies is foreseen, that uncertainties about the really achievable results, or ignorance about the behavior of the technologies, prevent starting a linear project with specifications closed.
        Spiral life cycle
        The spiral life cycle can be considered as a generalization of the previous one for cases in which a single evaluation of a prototype is not enough to ensure the disappearance of uncertainties and / or ignorances.
        
        OBJECTIVES OF EACH PHASE
        
        Definition phase (what to do?) Feasibility study.
        
        Know the requirements that the system must satisfy (functions and context limitations).
        
        Ensure that the requirements are achievable.
        
        Maintenance and operation phase
        Operation: ensure that the use of the project is as intended. Maintenance (we refer to non-routine maintenance, that is, one that is not limited to repairing common breakdowns or wear - this is the case of maintenance in software products, since in a program it is not possible to speak of breakdowns or wear and tear).
- - - - Specific Studies
        
        Pre-feasibility studies aimed at determining the best alternatives for an investment project in terms of technical, financial, economic, environmental, social and institutional viability. This should include the preliminary calculation of economic indicators that take into account the investment costs and benefits generated by the different project alternatives. The alternative that presents the highest net present value should be selected to carry out a feasibility study.
        
        Feasibility studies aimed at broadening and deepening the analysis of the alternatives resulting from a pre-feasibility study already carried out. This should include a complete economic evaluation of the project, calculation of the internal economic rate of return, presentation of the project's net present value at a 12% discount rate, and sensitivity analysis.
        
        Final engineering designs, which could include calculations, plans and technical specifications that are necessary for the execution of an investment project, the feasibility of which has been duly demonstrated.
        
        Complementary studies on a project and / or bidding documents, in order to improve its presentation or complete the information required by national or foreign financial entities.
        
        Criteria for the Selection of Studies
        
        All studies to be financed with program resources must be compatible with the national priorities established by the government and consistent with the Bank's programmatic lines. The inclusion of the studies in the program will be done with the approval of the SSIP and the no objection of the IDB.
        
        General studies
        
        The general studies that are proposed must correspond to sectors, subsectors and / or priority areas, which present specific or general problems that need to be studied, to establish the actions that lead to their solution.
        
        Specific Studies
        
        Pre-feasibility study: as a requirement for this type of study, the problems to be solved must be previously identified, as well as the alternatives proposed for their solution.
        
        The pre-feasibility studies include geoscientific studies, social and environmental analyzes, a review of the policy, legal and regulatory frameworks related to geothermal resources and an analysis of economic and financial pre-feasibility with a probabilistic approach.
- - - - Below are the different stages in the development of a computer application:
        
        Birth of the project idea.
        
        Opportunity study.
        
        Detailed study.
        
        Loads notebook for computing.
        
        Organic analysis.
        
        Programming and testing.
        
        Provisional reception.
        
        Start-up.
        
        Operating balance.
        
        Audit.