Most ecological interactions occur in environments that are spatially and temporally heterogeneous-'patchy'-across a wide range of scales. In contrast, most theoretical models of ecological interactions, especially large-scale models applied to societal issues such as climate change, resource management and human health, are based on 'mean field' approaches in which the underlying patchiness of...

In order to solve the problem of low control accuracy marine ecological protection robot in route planning process during positioning, a new sliding method is proposed. First, obtain position information robot, use dynamic measurement information, and extract tracking information. According needs positioning target path tracking, combined with method, global designed. Experiments show that this...

This paper discusses a project, introducing a dynamic product flow model for optimizing mixed ecological farms. Mixed ecological farms focus upon closing cycles and management is based on control of ecological processes. The aim is to provide a tool for farmers to tune their farm to its specific ecological, economical and social environment. The production process is modeled in terms of cyclic ...

A brief accounting is presented of the evolution of natural ecosystems and human cultures including industrialization and its ecologically-significant interactions with natural abiotic and biotic processes of the earth. These accounts show, among other things, that excess resource harvest rates and material releases into the natural environment have been ecological risks of growing scope and sc...