Results 21 to 30 of about 1,376,682 (212)
Drought Risk Assessment based on PDSI in the Daqinghe Watershed, North China
MATEC Web of Conferences, 2018 Drought is a worldwide natural disaster and has become an obstacle to the socio-economic development of the Daqinghe watershed in North China, the drought risk of which is analyzed in this study.
Liu Shaohua +6 more
doaj +1 more source
Designing surveys for tests of gravity [PDF]
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2011 Modified gravity theories may provide an alternative to dark energy to explain cosmic acceleration. We argue that the observational programme developed to test dark energy needs to be augmented to capture new tests of gravity on astrophysical scales. Several distinct signatures of gravity theories exist outside the ‘linear’ regime, especially owing to ...
openaire +3 more sources
IEEE Access, 2022 The LiDAR and photogrammetric point clouds fusion procedure for building extraction according to U-Net deep learning model segmentation is provided and tested.
Pengcheng Zhang +6 more
doaj +1 more source
Shuiwen dizhi gongcheng dizhi, 2021 Based on the analyses of the paleocoast line and the dating test, the formation age of the upper terrestrial sedimentary soil in the Binhai New Area is studied, the principle of the recently deposited soils in the area is determined, and the ...
Hui WANG +3 more
doaj +1 more source
SPATIAL AND TEMPORAL ANALYSIS OF THE INFLUENCE OF GROUNDWATER ON LEAKAGE OF URBAN UNDERGROUND ENGINEERING [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022 Based on GIS, spatio-temporal analysis in quantitative research, has formed a set of analysis methods and the technical process, in view of the leakage defects mechanism research, first analyzes the regional hydrogeological conditions and uplift area ...
M. Yu, Y. Xu, Y. Li, Y. Song, Z. Feng
doaj +1 more source
Project Panormos Archaeological Survey: Method Design (survey-design)
, 2017 <p>This forms part of the preliminary open data release for the Project Panormos archaeological survey.</p> <p>This "panormos/survey-design" repository contains data collection templates used to record the
Wilkinson, Toby C. +1 more
core +1 more source
, 2002 copyright UK Data Service and data collection copyright owner.The Opinions and Lifestyle Survey (formerly known as the ONS Opinions Survey or Omnibus) is an omnibus survey that began in 1990, collecting data on a range of subjects commissioned by both ...
Office for National Statistics, Social Survey Division
core +1 more source
Calculation methods of the collapse influence range of a simple rock slope in the Guangzhou area
Shuiwen dizhi gongcheng dizhi, 2023 The rock collapse disaster caused by the dangerous rock mass of slope is a geological disaster with strong sudden occurrence and destructive ability. The key to prevent and control the dangerous rock mass of slope is to delineate the influence range of ...
Qiqiang ZENG +7 more
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ONS Omnibus Survey, October 2002
, 2004 copyright UK Data Service and data collection copyright owner.The Opinions and Lifestyle Survey (formerly known as the ONS Opinions Survey or Omnibus) is an omnibus survey that began in 1990, collecting data on a range of subjects commissioned by both ...
Office for National Statistics, Social Survey Division
core +1 more source
Flood control effect of the fluvial process in the middle and lower reaches of the Yangtze River
Shui kexue jinzhan, 2020 The amount of sediment discharge into the middle and lower reaches of the Yangtze River continues to decrease under the influence of multiple factors including sediment interception by reservoirs and soil and water conservation.
Zhaoming XU +4 more
doaj +1 more source