نتایج جستجو برای: flood simulation

تعداد نتایج: 580299  

2015
Jeffrey Czajkowski Luciana K. Cunha Erwann Michel-Kerjan James A. Smith Jon Huntsman

Established in 1984, the Wharton Risk Management and Decision Processes Center develops and promotes effective corporate and public policies for low-probability events with potentially catastrophic consequences through the integration of risk assessment, and risk perception with risk management strategies. Natural disasters, technological hazards, and national and international security issues ...

2005
Young-ri Choi Mohamed G. Gouda

Flood is a communication primitive that can be initiated by the base station of a sensor network to send a copy of some message to every sensor in the network. When a flood of some message is initiated, the message is forwarded by every sensor that receives the message until the sensors decide not to forward the message any more. This uncontroled flood can cause the forwarded messages to collid...

2009
Petr MÁCA Paul TORFS

The rainfall input is one of the main factors influencing the magnitude of the runoff response during a flood event. Its temporal and spatial distribution significantly contributes to the formation of hydrograph shape, peak discharge and flood volume. a novel approach to the evaluation of the role of the temporal rainfall pattern of hydrograph is presented in this contribution. The methodology ...

2004
Veronique Prinet

This paper present recent achievements obtained within the context of the ANFAS project (Data fusion for flood simulation and decision support). The overal objective of ANFAS was to set up an integrated system for flood prevention and protection. Data fusion and models fusion techniques constitute the core of the scientific research work of the project. Data fusion refers to the use of multi-so...

ژورنال: علوم آب و خاک 2012
رسول قبادیان, , سید محمود کاشفی‌پور, , محمد زارع, ,

Development of precise and simple methods in flood simulation has greatly reduced financial damage and life loss. Various methods and procedures have been implemented based on Saint-Venant's one-dimensional equation governing unsteady flows. To simplify the solution for these flows, analytical and numerical methods have been used. In the present study, a new method that provides the optimal out...

2011
N. B. Melnikova G. S. Shirshov Valeria V. Krzhizhanovskaya

We present a Virtual Dike simulation module developed as a part of a flood Early Warning System (EWS) for the UrbanFlood project. The UrbanFlood EWS is a distributed system that analyzes sensor data received in real-time from flood defenses (dikes, dams, etc.) and simulates dike stability, breaching and flood propagation. The aim of the Virtual Dike module is to develop an advanced multiscale m...

2008
Steven M. Manson Samuel J. Ratick Andrew R. Solow

This paper provides a case study of a method to estimate the value of additional information, before its acquisition, to aid decision making in the face of uncertainty. The approach employs conditional simulation in a Monte Carlo framework to conduct a Bayesian assessment of the value of information in an explicitly spatial setting. This paper demonstrates the procedure as applied by a hypothet...

2015
Yi Li Jianhua Gong Yiquan Song Zhigang Liu Tao Ma Heng Liu Shen Shen Wenhang Li Yangyang Yu

With the development of computer science, communications technology and environmental modeling, virtual geographic environments (VGEs) have been linked with field observations and geographic modeling. VGEs enable researchers in various fields to collaboratively perform computer-aided geographic experiments. This study proposes a collaborative environment to conduct a virtual flood experiment th...

Today, increase in flood frequency and intensity, and flash flood events have caused environmental issues and increased human and economic losses. As a result, numerous tools and new programs for flood forecasting systems and risk management programs are being used in the relevant period. There are models that make it easy to be used for this purpose. In this research, MISDc model was applied t...

داوری, کامران, قهرمان, بیژن, نورعلی, مه روز, پوررضا بیلندی, محسن,

There are some parameters in hydrologic models that cannot be measured directly. Estimation of hydrologic model parameters by various approaches and different optimization algorithms are generally error-prone, and therefore, uncertainty analysis is necessary. In this study we used DREAM-ZS, Differential Evolution Adaptive Metropolis, to investigate uncertainties of hydrologic model (HEC-HMS) pa...

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