نتایج جستجو برای: water system management

تعداد نتایج: 3334288  

Journal: :health scope 0
hosein kamani health promotion research center, zahedan university of medical sciences, ir iran; department of environmental health engineering, school of public health, tehran university of medical sciences, tehran, ir iran mohammad malakootian environmental health research center and environmental health engineering department, school of public health, kerman university of medical sciences, ir iran mohammad hoseini department of environmental health engineering, school of public health, tehran university of medical sciences, tehran, ir iran; department of environmental health engineering, school of public health, tehran university of medical sciences, tehran, ir iran. tel: +9821-22909114, fax: +9821-88954914 jalil jaafari department of environmental health engineering, school of public health, tehran university of medical sciences, tehran, ir iran

background the non-revenue water refers to a difference between the volume of water entering the system and billed authorized consumption. objectives the main purpose of this study is to determine the volume of non-revenue water in order to recognize the factors influencing water losses so that the information gathered can used in non-revenue water reduction management. materials and methods ka...

Journal: :Water research 2011
R Rehan M A Knight C T Haas A J A Unger

Recently enacted regulations in Canada and elsewhere require water utilities to be financially self-sustaining over the long-term. This implies full cost recovery for providing water and wastewater services to users. This study proposes a new approach to help water utilities plan to meet the requirements of the new regulations. A causal loop diagram is developed for a financially self-sustainin...

2007
Maja Schlüter Claudia Pahl-Wostl

The concept of resilience is widely promoted as a promising notion to guide new approaches to ecosystem and resource management that try to enhance a system's capacity to cope with change. A variety of mechanisms of resilience specific for different systems have been proposed. In the context of resource management those include but are not limited to the diversity of response options and flexib...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان - دانشکده کشاورزی 1391

هدف اصلی در این تحقیق مدیریت و برنامه ریزی جامع در راستای استفاده بهینه از منابع آب موجود سد بافت، با استفاده از نرم افزارweap و تأمین تقاضا در بخش های مختلف کشاورزی، صنعتی و شرب، با توجه به رشد نیاز آنها در آینده می باشد. به همین منظور ابتدا سد بافت در محیط مدل weap شبیه سازی شد و مدل برای شرایط پایه و هشت سناریوی مختلف طرح های توسعه اجرا گردید. با توجه به نتایج بدست آمده برای سناریوی تقاضای ش...

ژورنال: مدیریت شهری 2016
Pooresmaeel, Zahra , RAbiee Mandajin , MohammadReza,

The aim of this study was to investigate the impact of management information system on employees’ performance of Tehran Province Water and Wastewater Company in district 5. The present study was an applied research in terms of purpose and a descriptive correlational survey in terms of method. Cochran's formula was used to determine sample size which was 219 employees. The statistical sample wa...

Journal: :JoWUA 2015
Tomás Robles Ramón Alcarria Diego Martín de Andrés Mariano Navarro de la Cruz Rodrigo Calero Sofía Iglesias Manuel López

Water is a vital resource for life, and its management is a key issue nowadays. Information and communications technology systems for water control are currently facing interoperability problems due to the lack of support of standardization in monitory and control equipment. This problem affects various processes in water management, such as water consumption, distribution, system identificatio...

Journal: :Journal of environmental management 2009
J Medellín-Azuara L G Mendoza-Espinosa J R Lund J J Harou R E Howitt

This paper uses simple hydro-economic optimization to investigate a wide range of regional water system management options for northern Baja California, Mexico. Hydro-economic optimization models, even with parsimonious model formulations, enable investigation of promising water management portfolios for supplying water to agricultural, environmental and urban users. CALVIN, a generalized hydro...

Journal: :Environmental Modelling and Software 2005
Gail M. Cowie Stuart R. Borrett

Integrated urban water management e a framework to understand, control, and optimize elements of the urban water infrastructure as an integrated system e is inherently complex. It becomes more complex and challenging, however, when public participation in management institutions is considered. This paper applies a systems perspective to explore institutional arrangements for participation. Our ...

2005
S. Khan

Efficient water use is the key for sustainable management of water resources. The major reason of non-efficient management of water resources, especially in developing countries, is nonavailability of reliable hydrological information about the actual water used by different agricultural crops with in a large irrigation system or at the basin scale. Therefore, an estimation of spatially distrib...

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