Results 101 to 110 of about 3,149 (183)
Research on ZWD Forecasting Model Based on Improved Random Forest Algorithm
Abstract When electromagnetic wave signals from the Global Navigation Satellite System (GNSS) pass through the troposphere, they are impeded by atmospheric conditions, thereby affecting positioning efficiency. The atmosphere is rich in water vapor information, which can typically be studied quantitatively through tropospheric zenith wet delay ...
He Lin +4 more
openaire +1 more source
SusMat, Volume 5, Issue 2, April 2025.Solid polymer electrolytes with three‐dimensionally conducting paths are novelly designed by adjusting the cross‐linked structure, rendering enhanced cycling stability of lithium metal batteries under harsh conditions of high rate (1 C), high‐cathode loading (10.83 mg cm−2), and high‐energy‐density pouch cell (421.8 Wh kg−1, cathode loading of 25 mg cm−
Zhi‐Wei Dong +9 more
wiley +1 more source
Machine learning-based modelling of zenith wet delay using terrestrial meteorological data in the Brazilian territory [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information SciencesThe Zenith Total Delay (ZTD) is one of the primary error sources derived from the neutral atmosphere associated with the GNSS (Global Navigation Satellite Systems) technique.
A. M. Albuquerque +7 more
doaj +1 more source
Empirical model for mean temperature and assessment of precipitable water vapor derived from GPS
Geodesy and Geodynamics, 2013 The estimation of Precipitable Water Vapor (PWV) derived from Global Positioning System (GPS) data at the IGS site WUHN is assessed by comparing with PWV obtained from radiosonde data (No.57494) in Wuhan.
Tang Yanxin, Liu Lilong, Yao Chaolong
doaj +1 more source
R&D and private investment: How to conserve indigenous fruit biodiversity of Southern Africa [PDF]
Indigenous fruits contribute widely to rural incomes in Southern Africa but their availability is declining. A domestication program aims to increase farm-household income and conserve biodiversity through farmer-led tree planting.
Mithöfer, Dagmar +2 more
core
ZWDX: a global zenith wet delay forecasting model using XGBoost
Earth, Planets and SpaceTropospheric delays play a crucial role for Global Navigation Satellite Systems (GNSS). They are a major error source in GNSS positioning and, at the same time, also a variable of interest in GNSS meteorology.
Laura Crocetti +4 more
doaj +1 more source
Zimbabwe’s Black Market for Foreign Exchange [PDF]
This paper looks into the changes of the black market premium for foreign exchange in Zimbabwe. Generally, the black market for foreign exchange arises as a direct consequence of the adoption of exchange rate controls in many developing economies facing ...
Albert Makochekanwa
core
Onsala Space Observatory - IVS Analysis Center [PDF]
, 2012 This report briefly summarizes the activities of the IVS Analysis Center at the Onsala Space Observatory during 2012 and gives examples of results of ongoing ...
Elgered, Gunnar +4 more
core +1 more source
The Economic Decline of Zimbabwe
, 2009 For the past decade, Zimbabwe has been experiencing an economic decline that has resulted in an inflation rate of 231 million percent and an unemployment rate of over 90 percent.
Munangagwa, Chidochashe L.
core
Use of Tropospheric Delay in GNSS-Based Climate Monitoring—A Review
Remote SensingThe troposphere is a key component of the Earth’s climate system, modulating weather patterns and global temperatures through intricate interactions between water vapor, atmospheric pressure, and temperature.
Aleksandra Maciejewska
semanticscholar +1 more source