Wireless Sensing Networks for Environmental Monitoring: Two Case Studies from Tropical Forests

2011 ◽  
Author(s):  
G. Arturo S´nchez-Azofeifa ◽  
Cassidy Rankine ◽  
Mario Marcos do Espirito Santo ◽  
Rob Fatland ◽  
Milton Garcia
Keyword(s):  
Environmental Monitoring ◽  
Case Studies ◽  
Tropical Forests ◽  
Wireless Sensing

scholarly journals LiDAR-Based System and Optical VHR Data for Building Detection and Mapping

Sensors ◽  
2020 ◽  
Vol 20 (5) ◽  
pp. 1285 ◽  
Author(s):  
Silvia Liberata Ullo ◽  
Chiara Zarro ◽  
Konrad Wojtowicz ◽  
Giuseppe Meoli ◽  
Mariano Focareta
Keyword(s):  
Environmental Monitoring ◽  
Case Studies ◽  
Urban Areas ◽  
Lidar Data ◽  
Building Detection ◽  
The Earth ◽  
Areas Of Interest ◽  
2D And 3D ◽  
3D Lidar ◽  
Very High

The aim of this paper is to highlight how the employment of Light Detection and Ranging (LiDAR) technique can enhance greatly the performance and reliability of many monitoring systems applied to the Earth Observation (EO) and Environmental Monitoring. A short presentation of LiDAR systems, underlying their peculiarities, is first given. References to some review papers are highlighted, as they can be regarded as useful guidelines for researchers interested in using LiDARs. Two case studies are then presented and discussed, based on the use of 2D and 3D LiDAR data. Some considerations are done on the performance achieved through the use of LiDAR data combined with data from other sources. The case studies show how the LiDAR-based systems, combined with optical Very High Resolution (VHR) data, succeed in improving the analysis and monitoring of specific areas of interest, specifically how LiDAR data help in exploring external environment and extracting building features from urban areas. Moreover the discussed Case Studies demonstrate that the use of the LiDAR data, even with a low density of points, allows the development of an automatic procedure for accurate building features extraction, through object-oriented classification techniques, therefore by underlying the importance that even simple LiDAR-based systems play in EO and Environmental Monitoring.

ZigBee Technology Application in Disaster Rescue

2012 ◽  
Vol 605-607 ◽  
pp. 2358-2361
Author(s):  
Feng Jiang ◽  
Wei Zhao
Keyword(s):  
Environmental Monitoring ◽  
Early Warning ◽  
High Reliability ◽  
Low Complexity ◽  
Human Detection ◽  
Wireless Sensing ◽  
Technology Application ◽  
Disaster Victims ◽  
Zigbee Technology ◽  
Rescue Personnel

In the scene of disaster rescue, there are usually many potential hazards. How to guarantee the safety of the Rescue Personnel and the rescue efficiency is a problem that deserves our concern. From the perspective of rescue security, this paper explores a new program that adopts ZigBee technology in disaster rescue. By making use of ZigBee technology's features of high-reliability and low-complexity, it can make the gas acquisition module, image acquisition module and human detection module to form a wireless sensing probe network and then realize the environmental monitoring of disaster site and disaster victims searching and rescuing. In this way, it can overcome its previous shortcomings, such as poor real-time detection network, difficulty in wiring, etc. and thus to achieve the purpose of efficient early warning and rescue.

scholarly journals Incidences of caudal fin malformation in fishes from Jubail City, Saudi Arabia, Arabian Gulf

2018 ◽  
Vol 26 (1) ◽  
pp. 65-71 ◽  
Author(s):  
Laith A. Jawad ◽  
Mustafa Ibrahim ◽  
Baradi Waryani
Keyword(s):  
Saudi Arabia ◽  
Environmental Monitoring ◽  
Case Studies ◽  
Coastal Waters ◽  
Arabian Gulf ◽  
Natural Populations ◽  
Caudal Fin ◽  
Morphological Diagnosis ◽  
Parastromateus Niger

Abstract These case studies endeavor to report incidences of caudal fin deformities in several commercial fishes living in natural populations in the Saudi Arabian coastal waters of the Arabian Gulf. Two groups of anomalies were observed, slight and severe. The carangid species, Parastromateus niger (Bloch) and the soleid species, Euryglossa orientalis (Bloch & Schneider), had slight cases of caudal fin abnormalities, while the species Oreochrromis mossambicus (Peters), Epinephelus stoliczkae (Day), Diagramma pictum (Thunberg), Cephalopholis hemistiktos (Rüppell), Lethrinus nebulosus (Forsskål), and Lutjanus sanguineus (Cuvier) had severe deformities. The abnormalities were assessed by morphological diagnosis. None of the cases was fatal as they occurred in adult individuals. The possible causes for these deformities as well as the suitability of this kind of case study for environmental monitoring are discussed. Further studies should be conducted from the perspective of pollution.

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