A decision-support system for real-time management of Easter lily (Lilium longiflorum Thunb.) scheduling and height--I. System description
Abstract A decision-support system was developed for recommending night and day temperature settings to control the timing and height of Easter lily ( Lilium longiflorum Thunb.). Existing biological models and qualitative rules were combined into an overall model of the response of plant development rate to temperature. A process control algorithm was used to determine appropriate height control actions based on a graphical control chart of plant height over time. A knowledge-based system checked the feasibility of output from the development and height control models and generated a text report. This model was implemented on a personal computer in a program called “The Greenhouse CARE System” and has been linked directly with an environmental computer to control greenhouse temperatures. A companion article describes validation of this model.
Implementing a decision and expert system model for individual nutrient selection
Abstract A decision analysis and expert system model was applied to the problem of individual nutrient selection for cucumber growth in a controlled environment. The ability to use a decision tree with probabilities together with intuitive modeling for the derivation of a plant growth function through the use of expert systems provided a flexible and adaptable model. The model was assembled using a decision tree as the core with three rulebases providing inputs into the tree. The decision tree was comprised of a decision node (which nutrients?), a chance node (probabilities of solar irradiance ranges) and an outcome (plant growth function). The rulebase for the plant growth function was derived by growing a cucumber crop in a greenhouse at the Ohio Agricultural Research and Development Center, Wooster, Ohio. The expected value of each recipe was determined by computing the cross-products of the probabilities of irradiance levels and the plant growth function.
Appropriated Pasts: Indigenous Peoples and the Colonial Culture of Archaeology
Chapter 1 Colonial Culture of Archaeology Chapter 2 Progressivism: The Invention of Prehistory Chapter 3 Antiquation: Aboriginal Peoples as Living Fossils Chapter 4 Migrationism: The Archaeology of Dispossession Chapter 5 Diffusionism: The Archaeology of Alienation Chapter 6 Subjectation: Appropration Through Science Chapter 7 Shared Nations: The New Appropriation Chapter 8 Partnerships: Pathways to a Decolonised Practice Chapter 9 References Chapter 10 Index