Systems modeling.
Systems modeling shows how the system has to work. Use this technique to study how the various components combine to produce some result. These components make up a system that includes resources processed in different ways (advice, diagnosis, treatment) to generate direct results (products or services), which in turn can produce effects (immunity, rehydration, for example) in the people who use them. and, in the long term, more indirect impacts (lower prevalence of measles or lower mortality rates, for example) on users and the community in general.
When is it used
By diagramming the relationships between system activities, systems modeling makes it easier to understand the relationships between various activities and the impact they have on each other.
It shows the processes as part of a large system whose objective is to respond to a specific customer need. Systems modeling is very useful when you need a big picture, as it illustrates how direct and ancillary services interrelate, where critical inputs come from, and how products or services will respond to the needs of the community. When teams don't know where to start, systems modeling can help them locate problem areas or analyze the problem by looking at the different parts of the system and the relationships between them. It can pinpoint other potential problem areas, as well as reveal data collection needs: input indicators, processes and products (direct results, effects on clients and / or impacts). Lastly, it can be used to observe and track performance.
Elements of systems modeling
Systems modeling uses three elements: inputs, processes, and outputs. The inputs are the resources used to carry out the activities (process). These inputs can be raw materials or products and services produced by other parts of the system.
For example, with the malaria treatment system, supplies include antimalarial drugs and qualified health professionals. Other parts of the system provide both inputs: drugs come from the logistics subsystem and skilled labor comes from the training subsystem.
Processes are the activities and tasks that convert inputs into products and services.
Products are the results of processes; they generally refer to the direct results generated by a process and can sometimes refer to the more indirect effects on the clients themselves and the more indirect impacts still on the community in general.
Results are the direct products or services that the process produces. The outcomes of the malaria treatment system are the patients who receive counseling and therapy services.
Types of models
A physical model can refer to either a theoretical construction or a montage with real objects that tries to reproduce the behavior of some aspects of a more complex physical or mechanical system. The term with different meanings can appear in the field of physics or in the field of engineering.
In engineering, physical models, in contrast to mathematical models and analogue models, are constructions on a reduced or simplified scale of engineering works, machines or systems to study their behavior and thus allow to perfect the designs, before starting construction of real works or objects. For this reason, this type of model is also called a reduced model or a simplified model.
Conceptual models
The conceptual model wishes to establish by means of a questionnaire and with field work, the importance of discrimination or rejection in a community and to do so by means of a questionnaire in the form of a simulation with an attitude scale. After seeing if the population is representative or adequate, now the simulation is the application of the questionnaire and the model is the questionnaire to confirm or reject the hypothesis of whether there is discrimination in the population and towards which group of people and on what issues. Most of the simulations are of this type with conceptual models.
SYSTEM DEFINITION
It is the application (mapping) of a set of terms (inputs and states) in another set of terms (outputs).
It is a complex of elements or components directly or indirectly related to a causal network, so that each component is related to at least several others, in a more less stable way, in a given period.
A set of organized and related parts or elements that interact with each other to achieve an objective. The systems receive (input) data, energy or matter from the environment and provide (output) information, energy or matter.
A system can be physical or concrete (a computer, a television, a human) or it can be abstract or conceptual (a software).
It is the application (mapping) of a set of terms (inputs and states) in another set of terms (outputs).
It is a complex of elements or components directly or indirectly related to a causal network, so that each component is related to at least several others, in a more less stable way, in a given period.
A set of organized and related parts or elements that interact with each other to achieve an objective. The systems receive (input) data, energy or matter from the environment and provide (output) information, energy or matter.
A system can be physical or concrete (a computer, a television, a human) or it can be abstract or conceptual (a software).
