نتایج جستجو برای: constructing and expanding greenhouses

تعداد نتایج: 16839634  

Journal: :مهندسی بیوسیستم ایران 0
نرگس بنائیان دانشجوی دکتری، دانشکده مهندسی و فناوری ، دانشگاه تهران محمود امید استاد، دانشکده مهندسی و فناوری پردیس کشاورزی و منابع طبیعی کرج حجت احمدی دانشیار، دانشکده مهندسی و فناوری، پردیس کشاورزی و منابع طبیعی کرج

savojbolagh is the main region of hydroponic greenhouse agriculture in iran and is of the capacity to produce the highest in greenhouse production strawberry. the aims followed in this study were to calculate the energy use pattern and determine the relationship between energy input in greenhouse strawberry production and its yield through a linear programming model as based on data envelopment...

1999
S. Wang M. Yernaux J. Deltour

The experimental study of air movement induced by natural ventilation in greenhouses requires a system to measure the air velocity "eld. A networked, two-dimensional sonic anemometer system was developed for simultaneous measurement of the instantaneous air speed and direction at 12 locations. The system performance was tested and validated against a mass #ow controller and a commercial, three-...

Journal: :Zootaxa 2015
Danilo Matzke Petr Kocarek

Greenhouses in botanical or zoological gardens are home to dozens of species of invertebrates that were introduced alongside plants or potting soil. Our study presents the description of an alien species of earwig, Euborellia arcanum sp. nov., found in tropical greenhouses in Leipzig and Potsdam (Germany) and in Vienna (Austria), including information about its biology in breeding culture. The ...

2016
Man Zhang Yuhan Ji Ting Li Minzan Li

Solar greenhouse, as an intelligent production system, is a trend in the development of facility agriculture. The major crops cultivated in greenhouses are high-value crops such as leafy vegetables, fruit vegetables, and flowering plants. Wireless sensor network (WSN) is a new technology of information acquisition that has been widely used in agriculture, especially in greenhouses. Environmenta...

Journal: :I. J. Robotics Res. 2012
George Konidaris Scott Kuindersma Roderic A. Grupen Andrew G. Barto

We describe CST, an online algorithm for constructing skill trees from demonstration trajectories. CST segments a demonstration trajectory into a chain of component skills, where each skill has a goal and is assigned a suitable abstraction from an abstraction library. These properties permit skills to be improved efficiently using a policy learning algorithm. Chains from multiple demonstration ...

2011
George Konidaris Scott Kuindersma Roderic Grupen

We describe recent work on CST, an online algorithm for constructing skill trees from demonstration trajectories. CST segments a demonstration trajectory into a chain of component skills, where each skill has a goal and is assigned a suitable abstraction from an abstraction library. These properties permit skills to be improved efficiently using a policy learning algorithm. Chains from multiple...

2004
Magdi. A. Koutb Hamdi. A. Awad Ibrahim A. Abd

The paper focuses on the application of fuzzy neural techniques in fault detection and isolation of single failures in greenhouses. The objective of this paper is to detect and isolate faults in greenhouses, with emphasis on faults occurred in actuators and sensors. The developed method is based on a comparison between the measured greenhouse climate and the predictions of a reference model. Th...

Journal: :Journal of Intellectual Property Law & Practice 2007

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید مدنی آذربایجان - دانشکده ادبیات و علوم انسانی 1391

abstractof two mcall programs introducing 100 vocabulary items through two im the researcher of the present study was intrigued to compare the effects age modalities (pictures and streaming video) with those of a conventional method (teacher instruction) in an efl context. she set out to investigate whether such multimedia environments could provide a more effective environment for vocabulary...

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