Results 61 to 70 of about 1,590 (229)

Accuracy assessment of RTK/PPK UAV-photogrammetry projects using differential corrections from multiple GNSS fixed base stations

Geocarto International, 2023
Unmanned aerial vehicles (UAVs) equipped with global navigation satellite system-real-time kinematic (GNSS RTK) receivers allow direct georeferencing of the photogrammetric project without using ground control points (GCPs).
Patricio Martínez-Carricondo, Francisco Agüera-Vega, Fernando Carvajal-Ramírez   +2 more
doaj   +1 more source

Pediatric home‐based central venous access device dressings: Medical liquid adhesive versus standard care to reduce dressing disruption: The STICKY‐kids RCT protocol

Journal of Hospital Medicine, EarlyView.
Abstract Background Central venous access devices (CVADs) are frequently used in Hospital‐At‐Home models to facilitate prolonged intravenous treatment for children. Premature CVAD dressing disruption is common and contributes to device failure. This protocol describes a trial evaluating the adjunctive use of medical liquid adhesive at the dressing–skin
Tricia M. Kleidon, Mari Takashima, Victoria Gibson, Robert S. Ware, R. N. Nicole Marsh, Amanda J Ullman   +5 more
wiley   +1 more source

Farming in the shadows of Rome: A multi‐proxy palaeoenvironmental record from Loch Clunie—Perthshire

Journal of Quaternary Science, EarlyView.
ABSTRACT Roman impacts on local society is a subject of international significance. Loch Clunie, Perthshire, lies only 5.4 km from Inchtuthil, the only Roman legionary fortress in Scotland, and contains two crannogs and a probable lakeside hillfort. Despite this proximity and the likelihood of local–Roman interaction, these sites remain unexcavated ...
Samantha E. Jones, Maarten Blaauw, Fraser Hunter, Olalla López‐Costas, Antonio Martínez Cortizas, Tim M. Mighall, Gordon Noble   +6 more
wiley   +1 more source

Using existing infrastructure as ground control points to support citizen science coastal UAS monitoring programs

Frontiers in Environmental Science, 2023
Recent publications have described the ability of citizen scientists to conduct unoccupied aerial system (UAS) flights to collect data for coastal management.
Lucas F. Rabins, Ethan J. Theuerkauf, Erin L. Bunting, Erin L. Bunting   +3 more
doaj   +1 more source

Impact of Institutional Protocol on Urinary Catheter Outcome Measures in Orthopedic Children Treated With Epidural Analgesia

Pediatric Anesthesia, EarlyView.
ABSTRACT Background Epidural analgesia is commonly used for pain control after major lower‐limb orthopedic surgery in children, but it is associated with a risk of postoperative urinary retention. Consequently, urinary catheters are often placed and left in situ for the full duration of epidural analgesia, despite the potential risks of prolonged ...
Idan Katz, Tomer Talmy, Dor Barami, Tal S. Beckmann, Barry Danino, Yotam Lior, Margaret Ekstein   +6 more
wiley   +1 more source

Pharmacokinetics of Intravenous Melatonin in Preschool‐Aged Pediatric Surgical Patients

Pediatric Anesthesia, EarlyView.
ABSTRACT Background Melatonin may have several beneficial clinical effects in the perioperative setting. In children, it has been studied for preoperative anxiety, postoperative pain, and emergence delirium. Melatonin's pharmacokinetic profile is well‐known in adults, but data in young children are sparse.
Anne Louise de Barros Garioud, Arash Afshari, Lau Romlund Halgreen, Kristian Østergaard Nielsen, Lars Peter Kloster Andersen   +4 more
wiley   +1 more source

MULTI-GNSS PPP: An Alternative Positioning Technique for Establishing Ground Control Points

International Journal of Environment and Geoinformatics, 2020
Traditionally, ground control points (GCPs) are utilized to determine absolute image orientations indirectly in aerial triangulation. For a long time, differential and relative GNSS (Global Navigation Satellite System) positioning techniques have been ...
Berkay Bahadur, Metin Nohutçu
doaj   +1 more source

EVALUATION OF ASTER GDEM V3 USING ICESAT LASER ALTIMETRY [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
We have used a set of Ground Control Points (GCPs) derived from altimetry measurements from the Ice, Cloud and land Elevation Satellite (ICESat) to evaluate the quality of the 30 m posting ASTER (Advanced Spaceborne Thermal Emission and Reflection ...
C. C. Carabajal, J.-P. Boy
doaj   +1 more source

Validation of a Particle Image Velocimetry Algorithm Through Comparative Field and Laboratory Analysis

River Research and Applications, EarlyView.
ABSTRACT Flow velocity measurement is fundamental to hydrological and hydraulic studies, providing essential data for streamflow estimation and river dynamics analysis. Traditional in situ methods like propeller gauges and acoustic Doppler current profilers are accurate but intrusive and labour‐intensive, while non‐intrusive image processing methods ...
Ghazaleh Nassaji Matin, Gareth Bradbury, Alan Puttock, Kirsty Frith, Diego Panici   +4 more
wiley   +1 more source

A landslide monitoring method using data from unmanned aerial vehicle and terrestrial laser scanning with insufficient and inaccurate ground control points

Journal of Rock Mechanics and Geotechnical Engineering
Non-contact remote sensing techniques, such as terrestrial laser scanning (TLS) and unmanned aerial vehicle (UAV) photogrammetry, have been globally applied for landslide monitoring in high and steep mountainous areas.
Jiawen Zhou, Nan Jiang, Congjiang Li, Haibo Li   +3 more
doaj   +1 more source