A climate control system for a small greenhouse equipped with a variable-pressure fogging system and variable-speed extracting fans was developed and validated.
The number of replicated runs for each combination of population model, breeding system and variables was 5000.
It has inherited control paradigms including switching control systems and variable structure systems originally designed for engineering problems, mainly in the areas of mechanical and electrical systems.
This paper considers switching output feedback control of linear systems and variable-structure systems.
But tech has always had its place on our farms (think tractors, GPS, Radio frequency identification, irrigation systems and variable-rate technology), and "smart" precision tools and software are definitely making their mark on California agriculture.
The 28 core variables are in three groups: "system variables", "patient variables", and "post-intervention variables" (Table 1).
For this purpose, three different AC systems had been selected: a Chilled Beams (CB) system, a Fan Coil Units (FCU) system, and a Variable Refrigerant Flow (VRF) system.
The analysis is performed based on three different system hypotheses: a single-zone system and a variable air volume system with and without humidity control.
Seven organ systems were then selected for further consideration (respiratory, cardiovascular, renal, hepatic, hematological, central nervous system, gastrointestinal), and variables for each organ system were chosen according to a set of 'ideal descriptor' criteria (Table 3).
The variables recorded included demographic, comorbidity (diagnoses categorised using the Adjusted Clinical Groups case-mix system) and socioeconomic variables (deprivation index of the area of residence).
