نتایج جستجو برای: hms hydrologic engineering center

تعداد نتایج: 541661  

Journal: :Applied sciences 2022

This study presents an evaluation of climate and land-use changes induced impacts on water resources Multan City, Pakistan. Statistical Down Scaling Model (SDSM) Geographical Information System (GIS) are used for change scenario spatial analyses. Hydrologic Engineering Center’s Hydraulic Modeling (HEC-HMS) model is rainfall-runoff simulation. The investigated results show significant in climato...

Journal: :H2Open journal 2023

Abstract Hydrological modeling is important to provide relevant hydrologic information from limited data. In this study, Hydrologic Modeling System (HEC-HMS) was used simulate the rainfall–runoff relationship for Dabus subbasin of Blue Nile Basin. Daily precipitation and stream flow data 2002 2019 were as key input model, together with soil land use/land cover data, a digital elevation model st...

محدودیت‏های ساختاری مدل‏های هیدرولوژیکی و عدم دسترسی به همة پارامترهای حوضة آبخیز همچنین عدم امکان تعیین دقیق شرایط مرزی و شرایط اولیه، واسنجی مدل‏های هیدرولوژیک را ایجاب می‏کند. با توجه به زمان‌بربودن واسنجی دستی، به‏ویژه هنگامی که داده‏ها کم و پارامترها فراوان‌اند، روش‏های واسنجی خودکار، مبتنی بر استفاده از روش‏های جست‌وجوی سیستماتیک در فضای چند‏بعدی، با استفاده از یک تابع هدف، بسیار سودمند ا...

Journal: :آب و خاک 0
رضا گرمه ای علیرضا فرید حسینی مجید هاشمی نیا علی حجتی

introduction: planning and management of water resource and river basins needs use of conceptual hydrologic models which play a significant role in predicting basins response to different climatic and meteorological processes. evaluating watershed response through mathematical hydrologic models requires finding a set of parameter values of the model which provides thebest fit between observed a...

2013
Lijun Bai Richard E. Harris Jian Kong Lixing Lao Vitaly Napadow Baixiao Zhao

1 The Key Laboratory of Biomedical Information Engineering, Ministry of Education, Department of Biomedical Engineering, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an 710049, China 2Department of Anesthesiology, University of Michigan, Ann Arbor, MI 48109, USA 3Department of Psychiatry, Massachusetts General Hospital (MGH), Harvard Medical School, Boston, MA 02129, USA...

Journal: :Acta biomaterialia 2009
Xuetao Shi Yingjun Wang Li Ren Naru Zhao Yihong Gong Dong-An Wang

Tissue engineering scaffolds with a micro- or nanoporous structure and able to deliver special drugs have already been confirmed to be effective in bone repair. In this paper, we first evaluated the biomineralization properties and drug release properties of a novel mesoporous silica-hydroxyapatite composite material (HMS-HA) which was used as drug vehicle and filler for polymer matrices. Biomi...

Journal: :Hydrology 2022

Climate change is a serious and complex crisis that impacts humankind in different ways. It affects the availability of water resources, especially tropical regions South Asia to greater extent. However, impact climate on resources Sri Lanka has been least explored. Noteworthy, this first study attempts evaluate streamflow watershed located southern coastal belt island. The objective paper Uppe...

Journal: :Entropy 2017
Yu Zhang Vijay P. Singh Aaron R. Byrd

Yu Zhang 1, Vijay P. Singh 1,2,* and Aaron R. Byrd 3 1 Department of Biological and Agricultural Engineering, Texas A&M University, College Station, TX 77840, USA; [email protected] 2 Zachry Department of Civil Engineering, Texas A&M University, College Station, TX 77843-2117, USA 3 Hydrologic Systems Branch, Coastal and Hydraulics Laboratory, Engineer Research Development Center, U.S. Arm...

   Hydrological models are simplified representation of the real basin system, which helps to assess basin function in response to different inputs and better understanding of hydrological processes. The HEC-HMS model is one of the most important hydrological models for Flood estimating volumes and discharge in watersheds. In this research, the HEC-HMS hydrologic model was used to simulate the ...

2002

The paper discusses how the well known USACE HEC models, RAS and HMS, are fully integrated within the decision support system of the Romagna River Basins in order to predict flood effects. The models are fully available from the web and cope with such a variety of problems as rainfall-runoff modeling, river and civil works hydraulics, and the mapping of hydraulic hazard. The paper illustrates t...

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