Results 41 to 50 of about 12,661 (218)

A review of satellite positioning systems for civil engineering [PDF]

open access: yes, 2015
This paper informs and updates civil engineers of the status and advances of global navigation satellite systems, and how this will affect the profession in the near future. An overview of the various global and regional systems is given. Real data are
Brown, C, Roberts, GW, Tang, X
core   +2 more sources

MTAGCN: predicting miRNA-target associations in Camellia sinensis var. assamica through graph convolution neural network

open access: yesBMC Bioinformatics, 2022
Background MircoRNAs (miRNAs) play a central role in diverse biological processes of Camellia sinensis var.assamica (CSA) through their associations with target mRNAs, including CSA growth, development and stress response.
Haisong Feng   +4 more
doaj   +1 more source

Research on Modeling Weighted Average Temperature Based on the Machine Learning Algorithms

open access: yesAtmosphere, 2023
In response to the nonlinear fitting difficulty of the traditional weighted average temperature (Tm) modeling, this paper proposed four machine learning (ML)-based Tm models.
Kai Li   +5 more
doaj   +1 more source

ANALYSIS OF URBAN FOREST CARBON SEQUESTRATION CAPACITY: A CASE STUDY OF ZENGDU, SUIZHOU [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
Carbon-fixing and oxygen-releasing is an important content of forest ecosystem serving in city. Analysis of forest ecosystem carbon sequestration capacity can provide scientific reference for urban forest management strategies.
X. Yu, H. Wang, W. Cai, Y. Han
doaj   +1 more source

Geographically Weighted Flow Cross K-Function for Network-Constrained Flow Data

open access: yesApplied Sciences, 2022
Network-constrained spatial flows are usually used to describe movements between two spatial places on a road network. The analysis of the spatial associations between different types of network-constrained spatial flows plays a key role in understanding
Weijie Zhang   +4 more
doaj   +1 more source

The Use of Artificial Intelligence in Enhancing Navigation Safety in Case of GNSS Signal Fading or Interference [PDF]

open access: yesTransNav
Global Navigation Satellite Systems (GNSS) play a key role in modern navigation and transportation service delivery. Today it is difficult to imagine the daily operation of land, sea or air transportation without the positioning and timing provided by ...
Marcin Chrzan
doaj   +1 more source

BeiDou-G2: Past and Present

open access: yes, 2022
Tired of submitting. So be it. (22 pages, 4+8 figures, 1+7 tables)
openaire   +2 more sources

BeiDou Augmented Navigation from Low Earth Orbit Satellites [PDF]

open access: yesSensors, 2019
Currently, the Global Navigation Satellite System (GNSS) mainly uses the satellites in Medium Earth Orbit (MEO) to provide position, navigation, and timing (PNT) service. The weak navigation signals limit its usage in deep attenuation environments, and make it easy to interference and counterfeit by jammers or spoofers.
Mudan Su   +3 more
openaire   +3 more sources

Deep Learning Based Detector YOLOv5 for Identifying Insect Pests

open access: yesApplied Sciences, 2022
Insect pests are a major element influencing agricultural production. According to the Food and Agriculture Organization (FAO), an estimated 20–40% of pest damage occurs each year, which reduces global production and becomes a major challenge to crop ...
Iftikhar Ahmad   +7 more
doaj   +1 more source

Medium Earth Orbit dynamical survey and its use in passive debris removal

open access: yes, 2019
The Medium Earth Orbit (MEO) region hosts satellites for navigation, communication, and geodetic/space environmental science, among which are the Global Navigation Satellites Systems (GNSS).
Rosengren, Aaron J.   +3 more
core   +1 more source

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