نتایج جستجو برای: irrigation networks

تعداد نتایج: 469567  

Journal: :تحقیقات آب و خاک ایران 0
فاطمه صادقی کارشناس ارشد گروه مهندسی سازه های آبی دانشگاه تربیت مدرس محمدجواد منعم دانشیار گروه مهندسی سازه های آبی دانشگاه تربیت مدرس

for the performance improvement and higher flexibility in irrigation networks, applications of automatic systems are expanding and on evaluation of their success for achieving the objectives are essential and necessary. considering various equipment, algorithms, and their applications at different levels of irrigation networks, the performance of automatic systems is a function of the performan...

Journal: :آب و خاک 0
سید نادر شتاب بوشهری سید فرهاد موسوی سید بهزاد شتاب بوشهری

abstract one of the problems in design of irrigation structures is sedimentation control in the inlet to the irrigation networks. water quality for agriculture requires that the sediments be controlled and reduced to the permissible limit at their entrance point to the turnouts and irrigation networks. this is possible by constructing a sedimentation basin. the bigger the basin, the best the re...

Journal: :مدیریت آب و آبیاری 0
میناسادات سیدجواد کارشناس ارشد مهندسی آبیاری و زهکشی، گروه مهندسی آبیاری و زهکشی، پردیس ابوریحان، دانشگاه تهران، پاکدشت، ایران محمود مشعل دانشیار گروه مهندسی آبیاری و زهکشی، مهندسی آبیاری و زهکشی، پردیس ابوریحان، دانشگاه تهران، پاکدشت، ایران

according to the low efficiency of irrigation and drainage networks and water distribution in iran, simulating water flow and sensitivity structures and networks is considered as a new approach to evaluate the performance hydroelectric projects in the country. in this study, because of reduced water supply and distribution, especially in downstream irrigation and drainage networks varamin to ev...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان 1389

wireless sensor networks (wsns) are one of the most interesting consequences of innovations in different areas of technology including wireless and mobile communications, networking, and sensor design. these networks are considered as a class of wireless networks which are constructed by a set of sensors. a large number of applications have been proposed for wsns. besides having numerous applic...

Journal: :Biosystems Engineering 2013

Journal: :Computers & OR 2006
K. Srinivasa Raju D. Nagesh Kumar Lucien Duckstein

The objective of the present paper is to select the best compromise irrigation planning strategy for the case study of Jayakwadi irrigation project, Maharashtra, India. Four-phase methodology is employed. In phase 1, separate linear programming (LP) models are formulated for the three objectives, namely, net economic benefits, agricultural production and labour employment. In phase 2, nondomina...

2014
José Albiac Yolanda Martínez

Irrigated agriculture has always been relevant to the Aragonese society. The major expansion of irrigation took place during the XX century to promote economic growth and to improve farmers’ social conditions in rural Spain. At present, maintaining irrigation in Aragon is still important because agriculture is linked to a strong agribusiness sector, and because irrigation contributes to avoid d...

2013
Zhao Li-Ming

Confronted by the population mushroomed and the increasing shortage of water around the world today, water-saving irrigation and intensive cultivation are inevitable and viable. In this paper, the auto water-saving irrigation based on wireless sensors networks and multi-source information fusion technology based on entropy is introduced. Using wireless sensors networks which adopts nRF2401 as t...

2018
Susan A. O'Shaughnessy Steven R. Evett Paul D. Colaizzi Terry A. Howell S. A. O’Shaughnessy S. R. Evett P. D. Colaizzi T. A. Howell

Automatic irrigation scheduling has been demonstrated using wired sensors and sensor network systems with subsurface drip and moving irrigation systems. However, there are limited studies that report on crop yield and water use efficiency resulting from the use of wireless networks to automatically schedule and control irrigations. In this 2011 study, a multinode wireless sensor network (WSN) s...

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