نتایج جستجو برای: waterways

تعداد نتایج: 1487  

Journal: :Journal of Political Economy 1914

2002
CLIFFORD E. KRAFT PATRICK J. SULLIVAN ALEXANDER Y. KARATAYEV LYUBOV E. BURLAKOVA JEFFREY C. NEKOLA LADD E. JOHNSON DIANNA K. PADILLA

Assessing the spatial distribution of organisms across landscapes is a key step toward determining processes that produce observed patterns. The spatial distribution of an invasive aquatic mollusk, the zebra mussel (Dreissena polymorpha), was examined in two lake-rich areas (Belarus and midwestern United States) with contrasting invasion histories. Spatial distribution patterns of invaded lakes...

Journal: :Integrated environmental assessment and management 2009
Vadim E Panov Boris Alexandrov Kestutis Arbaciauskas Rosa Binimelis Gordon H Copp Michal Grabowski Frances Lucy Rob S E W Leuven Stefan Nehring Momir Paunović Vitaliy Semenchenko Mikhail O Son

Over the past century, the potential for aquatic species to expand their ranges in Europe has been enhanced both as a result of the construction of new canals and because of increased international trade. A complex network of inland waterways now connects some previously isolated catchments in southern (Caspian, Azov, Black, Mediterranean seas) and northern (Baltic, North, Wadden, White seas) E...

ژورنال: علوم آب و خاک 2018

The aim of this study was to evaluate the effect of increasing DEM spatial resolution on the assessment of the morphometric characteristics of waterways, as well as analysis and modeling of it by using RS and GIS techniques. In this study, which was carried out in the south of Darab city DEM 90 m (as one of the most usable data in waterway modeling), increase spatial resolution of DEM attractio...

Journal: :Journal of waterway, port, coastal, and ocean engineering 2023

Concept design guidelines for ship turning basins are often not met in practice due to environmental, economic, or geotechnical restrictions. In these cases, a detailed procedure is followed develop an optimized basin geometry within the environmental constraints. Then, real-time maneuvering simulations used evaluate maneuvers proposed geometry. However, such costly, especially if large number ...

Journal: :IJSPM 2012
Cory M. Rogers Keith D. Hofseth

Proceedings of the International Conference on Harbor, Maritime and Multimodal Logistics Modeling & Simulation, HMS 2009 ISBN 978-84-692-5416-5 146 ABSTRACT The Navigation System Simulation (NaSS) suite of tools has been developed by the Institute for Water Resources of the U.S. Army Corps of Engineers (Corps), as part of the Navigation Technologies Research Program. NaSS is composed of two pri...

Journal: :Environmental toxicology and chemistry 2011
Keith B Tierney Mark A Sekela Christine E Cobbler Besa Xhabija Melissa Gledhill Sirinart Ananvoranich Barbara S Zielinski

Fish live in waters of contaminant flux. In three urban, fish-bearing waterways of British Columbia, Canada, we found the active ingredients of WeedEx, KillEx, and Roundup herbicide formulations (2,4-D, dicamba, glyphosate, and mecoprop) at low to high ng/L concentrations (0.26 to 309 ng/L) in routine conditions, i.e., no rain for at least one week. Following rain, these concentrations increase...

Journal: :Accident; analysis and prevention 2014
Marti Pearson Kyra Hamilton

Approximately 40% of all drowning deaths involve a motor vehicle. Regardless of its significance as a cause of flood-related mortality, there is continued prevalence of driving through flooded waterways in Australia and worldwide. We aimed to understand the motivational determinates of driving through flooded waterways in low and high-risk scenarios by utilizing an augmented theory of planned b...

Journal: :Risk analysis : an official publication of the Society for Risk Analysis 2012
Suyi Li Qiang Meng Xiaobo Qu

The safe navigation of ships, especially in narrow shipping waterways, is of the utmost concern to researchers as well as maritime authorities. Many researchers and practitioners have conducted studies on risk assessment for maritime transportation and have proposed risk reduction/control measures accordingly. This article provides a detailed review and assessment of various quantitative risk a...

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