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Loglet Lab
Processes of growth and diffusion important for environment often follow a logistic course. In some cases they behave as a series of logistic wavelets, or "loglets." In the easiest cases to recognize, a loglet appears as an S-shaped curve or a succession of many S-shaped curves. In niches or markets in which several populations or technologies compete, the growth and decline of each entry also often exhibit logistic behavior. This behavior depends on interactions among the competitors. Namely, if a technology's market share grows, it comes at the cost of shares of others. This process is well-described by the so-called "logistic substitution model." To advance and ease analyses of logistic behavior in time-series data, we have developed the "Loglet Lab" software package to fit logistic curves to a single time-series and apply the logistic substitution model to multiple time-series.
For more about Loglet Lab, go to our Loglet Lab home page.
Publications about Loglet Lab
0072 . A primer on logistic growth and substitution: The mathematics of the Loglet Lab software. Technological Forecasting and Social Change 61(3): 247-271, 1999 A primer on logistic growth and substitution: The mathematics of the Loglet Lab software, Logistic curve model
0071 . The Loglet Lab software: A tutorial. Technological Forecasting and Social Change 61(3): 273-295, 1999 The Loglet Lab software: A tutorial, Logistic curve model
0070 . Carrying capacity: A model with logistically varying limits (PDF). Technological Forecasting and Social Change 61(3): 209-214, 1999 Carrying capacity: A model with logistically varying limits, Carrying Capacity, Growth Models, Logistic Model
0048 . Human population dynamics revisited with the logistic model: How much can be modeled and predicted?. Technological Forecasting and Social Change 53: 1-30, 1996 Human population dynamics revisited with the logistic model: How much can be modeled and predicted?, Logistic curve model, population
0035 . Bi-logistic growth. Technological Forecasting and Social Change 47: 89-102, 1994 Bi-logistic growth, Logistic curve model
0034 . Graphical representation of the world population growth (PDF). Human Dimensions Quarterly 1(2): 17-19, 1994 Graphical representation of the world population growth, population, logistic curve model
