Results 71 to 80 of about 45,693 (310)

Measuring Vegetation Phenology with Near-Surface Remote Sensing in a Temperate Deciduous Forest: Effects of Sensor Type and Deployment

Remote Sensing, 2019
Near-surface remote sensing is an effective tool for in situ monitoring of canopy phenology, but the uncertainties involved in sensor-types and their deployments are rarely explored. We comprehensively compared three types of sensor (i.e., digital camera,
Fan Liu, Xingchang Wang, Chuankuan Wang
doaj   +1 more source

Enabling Under Ice Glider Operations: A Backseat Driver Approach

Journal of Field Robotics, EarlyView.
ABSTRACT Polar Oceans are key locations for forcing global ocean circulation, influencing both global climate and biogeochemical cycles. Due to restricted access to these seasonally and perennially ice‐covered regions, these areas are severely undersampled.
Yaomei Wang, Benjamin Allsup, Georgios Salavasidis, Stephen Woodward, Adeniyi Adenaya, Mike Smart, Alexis Johnson, Felipe Marques Dos Santos, Jake Ludgate, Daniel Matterson, Alvaro Lorenzo, J. Alexander Brearley, Alexander Brian Phillips   +12 more
wiley   +1 more source

3-D Printed Antenna Subsystem With Dual-Polarization and its Test in System Level for Radiometer Applications

IEEE Access, 2020
A 3-D printed antenna subsystem, which proves its effectiveness in cost- & weight-reduction and reliability improvement over conventional CNC fabrication, is proposed in this paper.
Li Wu, Hui Chu, Di Cao, Shusheng Peng, Yongxin Guo   +4 more
doaj   +1 more source

Insights From the Alphasat Aldo Paraboni Experiment at Tito Scalo and Spino d'Adda: Characterizing Scintillation and Rain Attenuation at Ka‐ and Q‐Band Frequencies

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT We present experimental results on the relationship between rain attenuation and simultaneous scintillation during rain events, based on beacon signal measurements at 19.7 (Ka‐band) and 39.4 GHz (Q‐band) from the geosynchronous Alphasat satellite (25° E), received at two Italian ground stations, Spino d'Adda (42.1° slant path) and Tito Scalo ...
Miles Turner, Alef Comisso, Carlo Riva, Lorenzo Luini, Giuseppe Codispoti, Giorgia Parca   +5 more
wiley   +1 more source

Measurement of Output Intensity of the Light-Curing Devices in Dental Private Offices: An Analytical Cross-Sectional Study

Dental Hypotheses
Introduction: We aimed to evaluate the light intensity output of diode light-curing units (LCUs) in private clinics and assess clinical predicators in this regard, including the type of LCU, number of times used during the day, checking light cure ...
Hamsa Zaki Al-Assadi, Zaidoon Hasan Mohammed, Thanaa Ghani Nema, Ala Mahdi MuhamedAli, Nabeel Yaseen Khudhair   +4 more
doaj   +1 more source

Low-Cost Radiometer for Landsat Land Surface Temperature Validation

Remote Sensing, 2020
Land Surface Temperature (ST) represents the radiative temperature of the Earth’s surface and is used as input to hydrological, agricultural, and meteorological science applications.
Jonathan Miller, Aaron Gerace, Rehman Eon, Matthew Montanaro, Robert Kremens, Jarrett Wehle   +5 more
doaj   +1 more source

Directive Antenna Clutter Loss in Slant Paths

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT This paper investigates the development of a clutter loss model specifically for slant paths involving directive antennas. Conventionally, clutter loss is characterized by using isotropic antennas to facilitate standard link budget calculations via single antenna gain values.
Fernando Pérez Fontán, Vicente Pastoriza‐Santos, Fernando Machado Domı́nguez, Thomas Prechtl, Pavel Pechac   +4 more
wiley   +1 more source

Demo 14-23 Radiometer

, 2001
A radiometer consists of a set of four identical vanes, each black on one side and white on the other side, mounted on a low-friction suspension, as shown in Figure 1.

core  

Inflammatory Shift in Chronic Rhinosinusitis Amidst Guangzhou's Urbanization (2000–2018)

World Journal of Otorhinolaryngology - Head and Neck Surgery, EarlyView.
ABSTRACT Background Chronic rhinosinusitis (CRS) exhibits temporal and geographic diversity in pathological endotypes with progressive eosinophilic infiltration, while the underlying causes remain unclear. Current pathological endotypes determination relies on mean cell count per high‐power field, requiring accuracy optimization.
Ning Kang, Man‐Hou Chao, Xin Luo, Feng‐Wen Shan, Zi‐Xuan Hua, Ze‐Zhi Guo, Hua‐Mei Yan, He Zhang, Tong Wu, Min Zhou, Rui Zheng, Shuo Wu, Xue‐Kun Huang, Zhao‐Hui Shi, Ya‐Na Zhang, Ji Yang, Qin‐Tai Yang   +16 more
wiley   +1 more source

OCEAN \'COLOR RADIOMETER

, 1982
Technical description is given of an Ocean Color Radiometer (OCR) developed recently at DFVLR for chlorophyll and suspended sediment determination from low aircraft altitudes.
Volker Amann, Nasril Hadjar
core