More than 90% of the Dutch greenhouse area is covered with single glass. Energy losses through the covering are high during the heating period (winter) but energy requirements are also high during the cooling period (summer) in the case of semi-closed greenhouses. Until now, light losses of insulating coverings prevented growers from using double glass or plastic film. However, increasing energ...

From a long time age, human beings have chosen their place of residence and comfort so that those places would have relatively ideal natural and climatic conditions. For this reason, from the beginning, the civilizations have been formed in the susceptible natural regions such as Mesopotamia in Iran and Nile coasts in Egypt. Also, the core of human density has been made in the form of an oasis ...

The greenhouse are classified as complex systems such as large lag, multi-input multi-output (MIMO), non-linear and difficult to create mathematic model and so on, so it is difficult to implement classical control methods for this kind of process. A new sectional-control strategy is put forward. It uses different control modes for different deviation domains. The new strategy is based on MPT in...

Wireless sensor networks are useful complements to monitoring systems in greenhouse agriculture. Based on the requirements of this system, we design and implement one chine-type wireless sensor network (C-WSN) to monitor crops’ growing environment. In the hardware, CC2420RF are applied in sensor nodes as the wireless transceiver, and the MCU, MSP430F149, is used in sensor nodes and sink nodes, ...

Abstract This study examines whether the spread in the climate sensitivity of CoupledModel Intercomparison Project Phase 5 (CMIP5) models also captures the spread in the Southern Hemisphere dynamical response to greenhouse gas forcing. Three metrics are proposed to quantify the “dynamical sensitivity” of the Southern Hemisphere: the poleward expansion of the Hadley circulation, the poleward exp...

Within environmental management accounting (EMA) methodologies, material flow cost accounting (MFCA) has been successful in changing traditional attitudes of corporate organisations towards material wastes from production activities and supporting management with information to improve resource utilisations and material yields. However, EMA has not been able to expand itself beyond material was...

Climate control for intelligent greenhouses is currently an active field of research. Model based intelligent greenhouse control systems seem to increase the control performance over traditional solutions. This paper focuses on one aspect of the modeling necessary for the intelligent control systems, namely predicting the external temperature, which is closely related to the actual weather cond...