If I could understand the logic in how '+' and '-' arrows work in this diagram, I would be thrilled! This would solve a lot of confusion I experience with many other diagrams. If I understand it here, I can understand it there.

Overview of theory from Progress in Biophysics & Molecular Biology Special Issue 2016 From the century of the genome to the century of the organism: New theoretical approaches paper on organization. See example1 insight and example 2 insight Compare with Bogdanov (click tag)

Grimm's ODD and Nate Osgood's ABM Modeling Process and Courses See also Pattern Oriented Modelling IM-3834

William T. Powers insight that animate behavior is the purposeful control of perception. Behavior exists to control perceptual signals; internal reference signals are purposes. Continual reorganization of ends and means in the face of obstacles is Learning.

High altitude environments challenge the physiology of mammals mainly due to hypoxic conditions. As a response to this, many mammals show molecular adaptations e.g. by mutations in the genes encoding the hemoglobins. This can result in an increase O2 affinity (and thereby a leftshifted O2 dissociation curve) which will enhance the pulmonary loading of O2. However, the shift can also hamper the O2 unloading process to the metabolic tissue. To elucidate this trade-off between loading and unloading a numerical computer model was made in the program Insigt maker based on the organism, deer mouse (Peromyscus maniculatus). The numerical solution was calculated by the Runge-Kutta method. A time step (dt) of 0.00001 was chosen, as the results were independent of dt at this value. This was tested by investigating the residual values of an interval of dt around 0.00001. The model showed how the trade-off is expressed at different altitudes and how the degree of advantages/disadvantages varies. Based on the model it can be suggested that the trade-off is beneficial, when the hypoxia is severe at high altitude. This is consistent with previously findings. 

 

Use a savings account model to investigate the manner in which inflows and outflows govern the quantity of a stock. Extend the structure to create and investigate the relathionships of a growth producing reinforcing loop.

PCN Notes: change structure so that <time> is not needed in equation for interest, and share with Gene.

Questo modello ripercorre le dinamiche nella fiaba di  Esopo "Al lupo al lupo!"

copied from: Gene Bellinger (Limits to Growth Archetype | Insight Maker)

Navigation to aspects of systems relevant to applying the methods to health care; adapted from John Barton's representation of a system slide

Transferência de fardo é um dos arquétipos sistêmicos mais comuns. Encontra-se citado na Quinta Disciplina de Peter Senge, na Série Perspectivas Sistêmicas de Gene Bellinger, No Pensamento Sistêmico - 25 Aplicações Práticas (João Gratuliano et al.) e em muitas outras fontes. Original version in english Shift the Burden.

A shifting the burden structure occurs when there are different ways to address a situation. With one approach being easier, faster, and requiring fewer resources, which do you think gets pursued? The problem is that taking the easier path ensures one will have to take the easier path repeatedly, and makes it harder to pursue the long-term better solution. See also Archetypes.