نتایج جستجو برای: water falls viewshed
تعداد نتایج: 587512 فیلتر نتایج به سال:
This study evaluated the positioning accuracy of moving forest harvesters using global navigation satellite system (GNSS) signals under a canopy, and developed approaches for forecasting mature spruce canopy cover. Real-time kinematic with Trimble R12 receiver on top harvester achieved high accuracy, 86% observations meeting maximum precision 8 mm. However, presence cover hampered GNSS’s perfor...
Urbanization is a global process that has taken billions of people from the rural countryside to concentrated urban centers, adding pressure to existing water resources. Many cities are specifically reliant on renewable freshwater regularly refilled by precipitation, rather than fossil groundwater or desalination. A precipitationshed can be considered the "watershed of the sky" and identifies t...
gol-e-gohar iron ore mine of sirjan in southern part of iran is a large open pit that operates below the groundwater table and during mining operation, dewatering is required to prevent operation processes from flooding. current operation is going on by digging wells in or out of the pit and pumping to prevent flooding. as a result of the former dewatering operation a vast deep cone of depressi...
Background and purpose: Every year, 20-60% of older people experience a fall at least once. Falls account for 40% of all injury deaths at the age of 85 years and older. Medical costs and the need for traumatic ICU care in this population are three times higher than younger patients. The aim of this study was to determine the prevalence and factors associated with falls in older people living i...
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