keyword
MENU ▼
Read by QxMD icon Read
search

remote sensing

keyword
https://www.readbyqxmd.com/read/29780172/a-spatially-integrated-framework-for-assessing-socioecological-drivers-of-carnivore-decline
#1
Nicolás Gálvez, Gurutzeta Guillera-Arroita, Freya A V St John, Elke Schüttler, David W Macdonald, Zoe G Davies
Habitat loss, fragmentation and degradation are key threats to the long-term persistence of carnivores, which are also susceptible to direct persecution by people. Integrating natural and social science methods to examine how habitat configuration/quality and human-predator relations may interact in space and time to effect carnivore populations within human-dominated landscapes will help prioritise conservation investment and action effectively.We propose a socioecological modelling framework to evaluate drivers of carnivore decline in landscapes where predators and people coexist...
May 2018: Journal of Applied Ecology
https://www.readbyqxmd.com/read/29777650/modeling-dengue-vector-population-using-remotely-sensed-data-and-machine-learning
#2
Juan M Scavuzzo, Francisco Trucco, Manuel Espinosa, Carolina B Tauro, Marcelo Abril, Carlos M Scavuzzo, Alejandro C Frery
Mosquitoes are vectors of many human diseases. In particular, Aedes ægypti (Linnaeus) is the main vector for Chikungunya, Dengue, and Zika viruses in Latin America and it represents a global threat. Public health policies that aim at combating this vector require dependable and timely information, which is usually expensive to obtain with field campaigns. For this reason, several efforts have been done to use remote sensing due to its reduced cost. The present work includes the temporal modeling of the oviposition activity (measured weekly on 50 ovitraps in a north Argentinean city) of Aedes ægypti (Linnaeus), based on time series of data extracted from operational earth observation satellite images...
May 16, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29777620/vegetation-growth-enhancement-in-urban-environments-of-the-conterminous-united-states
#3
Wenxiao Jia, Shuqing Zhao, Shuguang Liu
Cities are natural laboratories for studying vegetation responses to global environmental changes because of their climate, atmospheric, and biogeochemical conditions. However, few holistic studies have been conducted on the impact of urbanization on vegetation growth. We decomposed the overall impacts of urbanization on vegetation growth into direct (replacement of original land surfaces by impervious built-up) and indirect (urban environments) components, using a conceptual framework and remotely-sensed data for 377 metropolitan statistical areas (MSAs) in the conterminous United States (CONUS) in 2001, 2006, and 2011...
May 19, 2018: Global Change Biology
https://www.readbyqxmd.com/read/29772888/mapping-malaria-risk-using-geographic-information-systems-and-remote-sensing-the-case-of-bahir-dar-city-ethiopia
#4
Amare Sewnet Minale, Kalkidan Alemu
The main objective of this study was to develop a malaria risk map for Bahir Dar City, Amhara, which is situated south of Lake Tana on the Ethiopian plateau. Rainfall, temperature, altitude, slope and land use/land cover (LULC), as well as proximity measures to lake, river and health facilities, were investigated using remote sensing and geographical information systems. The LULC variable was derived from a 2012 SPOT satellite image by supervised classification, while 30-m spatial resolution measurements of altitude and slope came from the Shuttle Radar Topography Mission...
May 7, 2018: Geospatial Health
https://www.readbyqxmd.com/read/29772886/urban-environmental-clustering-to-assess-the-spatial-dynamics-of-aedes-aegypti-breeding-sites
#5
Guillermo Albrieu-Llinás, Manuel O Espinosa, Agustín Quaglia, Marcelo Abril, Carlos Marcelo Scavuzzo
The identification of Aedes aegypti breeding hotspots in urban areas is crucial for the rational design of control strategies against this disease vector. Remote sensing and geographic information systems offer valuable tools for mapping habitat suitability of a given area. However, predicting species occurrences by means of probability distribution maps based on transversal entomological surveys has limited utility for local authorities. The aim of the present study was to carefully examine the temporal evolution of the number of houses infested with immature stages of Ae...
May 7, 2018: Geospatial Health
https://www.readbyqxmd.com/read/29772008/transient-response-of-the-northwestern-iberian-upwelling-regime
#6
Nuno Gonçalo Ferreira Cordeiro, Jesus Dubert, Rita Nolasco, Eric Desmond Barton
The hydrography and dynamics of NW Iberian margin were explored for July 2009, based on a set of in situ and remote sensing observations. Zonal sections of standard CTD casts, towed CTD (SeaSoar), Acoustic Doppler Current Profilers (ADCP) and Lagrangian surveys were made to characterize cycles of upwelling and relaxation in this region. Two periods of northerly winds, bounded by relaxation periods, were responsible for the formation of an upwelling front extending to the shelf edge. An equatorward flow was quickly set up on the shelf responding to the northerly wind pulses...
2018: PloS One
https://www.readbyqxmd.com/read/29770076/the-use-of-technology-to-improve-health-care-to-saskatchewan-s-first-nations-communities
#7
I Khan, N Ndubuka, K Stewart, V McKinney, I Mendez
Background: Saskatchewan is a province of over one million people and over 13% are Indigenous peoples, many of whom live on reserve lands. Despite continued efforts, access to health care remains a significant challenge for these Indigenous people, especially those in the North. Objective: To address this challenge, Saskatchewan's health care providers have been incorporating the use of technology for various health services. This paper describes various ways technology has been used in First Nations communities in Saskatchewan...
June 1, 2017: Canada Communicable Disease Report, Relevé des Maladies Transmissibles Au Canada
https://www.readbyqxmd.com/read/29766371/landsat-phenological-metrics-and-their-relation-to-aboveground-carbon-in-the-brazilian-savanna
#8
M Schwieder, P J Leitão, J R R Pinto, A M C Teixeira, F Pedroni, M Sanchez, M M Bustamante, P Hostert
BACKGROUND: The quantification and spatially explicit mapping of carbon stocks in terrestrial ecosystems is important to better understand the global carbon cycle and to monitor and report change processes, especially in the context of international policy mechanisms such as REDD+ or the implementation of Nationally Determined Contributions (NDCs) and the UN Sustainable Development Goals (SDGs). Especially in heterogeneous ecosystems, such as Savannas, accurate carbon quantifications are still lacking, where highly variable vegetation densities occur and a strong seasonality hinders consistent data acquisition...
May 15, 2018: Carbon Balance and Management
https://www.readbyqxmd.com/read/29762504/remote-sensing-of-wildland-fire-induced-risk-assessment-at-the-community-level
#9
M Razu Ahmed, Khan Rubayet Rahaman, Quazi K Hassan
Wildland fires are some of the critical natural hazards that pose a significant threat to the communities located in the vicinity of forested/vegetated areas. In this paper, our overall objective was to study the structural damages due to the 2016 Horse River Fire (HRF) that happened in Fort McMurray (Alberta, Canada) by employing primarily very high spatial resolution optical satellite data, i.e., WorldView-2. Thus, our activities included the: (i) estimation of the structural damages; and (ii) delineation of the wildland-urban interface (WUI) and its associated buffers at certain intervals, and their utilization in assessing potential risks...
May 15, 2018: Sensors
https://www.readbyqxmd.com/read/29760440/plant-spectral-diversity-integrates-functional-and-phylogenetic-components-of-biodiversity-and-predicts-ecosystem-function
#10
Anna K Schweiger, Jeannine Cavender-Bares, Philip A Townsend, Sarah E Hobbie, Michael D Madritch, Ran Wang, David Tilman, John A Gamon
Biodiversity promotes ecosystem function as a consequence of functional differences among organisms that enable resource partitioning and facilitation. As the need for biodiversity assessments increases in the face of accelerated global change, novel approaches that are rapid, repeatable and scalable are critical, especially in ecosystems for which information about species identity and the number of species is difficult to acquire. Here, we present 'spectral diversity'-a spectroscopic index of the variability of electromagnetic radiation reflected from plants measured in the visible, near-infrared and short-wave infrared regions (400-2,400 nm)...
May 14, 2018: Nature Ecology & Evolution
https://www.readbyqxmd.com/read/29758883/challenges-in-coupling-lter-with-environmental-assessments-an-insight-from-potential-and-reality-of-the-chinese-ecological-research-network-in-servicing-environment-assessments
#11
Shaoxia Xia, Yu Liu, Xiubo Yu, Bojie Fu
Environmental assessments estimate, evaluate and predict the consequences of natural processes and human activities on the environment. Long-term ecosystem observation and research networks (LTERs) are potentially valuable infrastructure to support environmental assessments. However, very few environmental assessments have successfully incorporated them. In this study, we try to reveal the current status of coupling LTERs with environmental assessments and look at the challenges involved in improving this coupling through exploring the role that Chinese Ecological Research Network (CERN), the LTER of China, currently plays in regional environment assessments...
August 15, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29758404/a-prospective-blinded-evaluation-of-a-novel-sensing-methodology-designed-to-reduce-inappropriate-shocks-by-the-subcutaneous-implantable-defibrillator
#12
Dominic A M J Theuns, Tom F Brouwer, Paul Jones, Venugopal Allavatam, Steven Donnelley, Angelo Auricchio, Reinoud E Knops, Martin C Burke
BACKGROUND: The majority of inappropriate shocks from the subcutaneous implantable cardioverter-defibrillator (S-ICD) are caused by cardiac oversensing. A novel sensing methodology, SMART Pass (SP) aims to reduce cardiac oversensing. OBJECTIVE: To evaluate the effect of SP on shocks in ambulatory S-ICD patients. METHODS: Patients implanted in 2015-2016 and on remote monitoring were included and followed for one year. Shocks were adjudicated by three independent, blinded reviewers as appropriate or inappropriate...
May 11, 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29758047/microphytobenthos-primary-production-estimated-by-hyperspectral-reflectance
#13
Vona Méléder, Bruno Jesus, Alexandre Barnett, Laurent Barillé, Johann Lavaud
The use of remote sensing techniques allows monitoring of photosynthesis at the ecosystem level and improves our knowledge of plant primary productivity. The main objective of the current study was to develop a remote sensing based method to measure microphytobenthos (MPB) primary production from intertidal mudflats. This was achieved by coupling hyperspectral radiometry (reflectance, ρ and second derivative, δδ) and PAM-fluorometry (non-sequential light curves, NSLC) measurements. The latter allowed the estimation of primary production using a light use efficiency parameter (LUE) and electron transport rates (ETR) whereas ρ allowed to estimate pigment composition and optical absorption cross-section (a*)...
2018: PloS One
https://www.readbyqxmd.com/read/29751560/direct-reflectance-measurements-from-drones-sensor-absolute-radiometric-calibration-and-system-tests-for-forest-reflectance-characterization
#14
Teemu Hakala, Lauri Markelin, Eija Honkavaara, Barry Scott, Theo Theocharous, Olli Nevalainen, Roope Näsi, Juha Suomalainen, Niko Viljanen, Claire Greenwell, Nigel Fox
Drone-based remote sensing has evolved rapidly in recent years. Miniaturized hyperspectral imaging sensors are becoming more common as they provide more abundant information of the object compared to traditional cameras. Reflectance is a physically defined object property and therefore often preferred output of the remote sensing data capture to be used in the further processes. Absolute calibration of the sensor provides a possibility for physical modelling of the imaging process and enables efficient procedures for reflectance correction...
May 3, 2018: Sensors
https://www.readbyqxmd.com/read/29751525/demonstration-of-a-speckle-based-sensing-with-pulse-doppler-radar-for-vibration-detection
#15
Nisan Ozana, Reuven Bauer, Koby Ashkenazy, Nissim Sasson, Ariel Schwarz, Amir Shemer, Zeev Zalevsky
In previous works, an optical technique for extraction and separation of remote static vibrations has been demonstrated. In this paper, we will describe an approach in which RF speckle movement is used to extract remote vibrations of a static target. The use of conventional radar Doppler methods is not suitable for detecting vibrations of static targets. In addition, the speckle method has an important advantage, in that it is able to detect vibrations at far greater distances than what is normally detected in classical optical methods...
May 3, 2018: Sensors
https://www.readbyqxmd.com/read/29751434/recent-dynamics-of-hydro-ecosystems-in-thermokarst-depressions-in-central-siberia-from-satellite-and-in-situ-observations-importance-for-agriculture-and-human-life
#16
Elena A Zakharova, Alexei V Kouraev, Guillaso Stephane, Garestier Franck, Roman V Desyatkin, Alexey R Desyatkin
Alases, which are thermokarst depressions that are occupied by grasslands and lakes, are an important element of the Central Yakutian periglacial landscape. In recent decades, climatic changes in Central Yakutia have resulted in important changes in environmental conditions. We use different remote-sensing instruments (Landsat 8, TerraSAR-X, ENVISAT-RA2, and Jason-2) alongside in situ observations to investigate 1) the spatial distribution and water regime of alas lakes and their relationships with climatic and geomorphologic factors, 2) the relationship of the alas' grassland productivity with the water regime and 3) the potential of alas grasslands for local agriculture...
February 15, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29751328/space-time-pm-2-5-mapping-in-the-severe-haze-region-of-jing-jin-ji-china-using-a-synthetic-approach
#17
Junyu He, George Christakos
Long- and short-term exposure to PM2.5 is of great concern in China due to its adverse population health effects. Characteristic of the severity of the situation in China is that in the Jing-Jin-Ji region considered in this work a total of 2725 excess deaths have been attributed to short-term PM2.5 exposure during the period January 10-31, 2013. Technically, the processing of large space-time PM2.5 datasets and the mapping of the space-time distribution of PM2.5 concentrations often constitute high-cost projects...
May 7, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29748323/the-rise-collapse-and-compaction-of-mt-mantap-from-the-3-september-2017-north-korean-nuclear-test
#18
Teng Wang, Qibin Shi, Mehdi Nikkhoo, Shengji Wei, Sylvain Barbot, Douglas Dreger, Roland Bürgmann, Mahdi Motagh, Qi-Fu Chen
Surveillance of clandestine nuclear tests relies on a global seismic network, but the potential of spaceborne monitoring has been underexploited. Here, we determined the complete surface displacement field of up to 3.5 m of divergent horizontal motion with 0.5 m of subsidence associated with North Korea's largest underground nuclear test using satellite radar imagery. Combining insight from geodetic and seismological remote sensing, we found that the aftermath of the initial explosive deformation involved subsidence associated with sub-surface collapse and aseismic compaction of the damaged rocks of the test site...
May 10, 2018: Science
https://www.readbyqxmd.com/read/29746790/mvo-automation-platform-addressing-unmet-needs-in-clinical-laboratories-with-microcontrollers-3d-printing-and-open-source-hardware-software
#19
Brian Iglehart
Laboratory automation improves test reproducibility, which is vital to patient care in clinical laboratories. Many small and specialty laboratories are excluded from the benefits of automation due to low sample number, cost, space, and/or lack of automation expertise. The Minimum Viable Option (MVO) automation platform was developed to address these hurdles and fulfill an unmet need. Consumer 3D printing enabled rapid iterative prototyping to allow for a variety of instrumentation and assay setups and procedures...
May 1, 2018: SLAS Technology
https://www.readbyqxmd.com/read/29746579/remote-acoustic-sensing-as-a-safety-mechanism-during-exposure-of-metal-implants-to-alternating-magnetic-fields
#20
Bingbing Cheng, Yonatan Chatzinoff, Debby Szczepanski, Chenchen Bing, Sumbul Shaikh, Omar Wyman, Cameron E Perry, James A Richardson, Dennis K Burns, Bret M Evers, David E Greenberg, Rajiv Chopra
Treatment of prosthetic joint infections often involves multiple surgeries and prolonged antibiotic administration, resulting in a significant burden to patients and the healthcare system. We are exploring a non-invasive method to eradicate biofilm on metal implants utilizing high-frequency alternating magnetic fields (AMF) which can achieve surface induction heating. Although proof-of-concept studies demonstrate the ability of AMF to eradicate biofilm in vitro, there is a legitimate safety concern related to the potential for thermal damage to surrounding tissues when considering heating implanted metal objects...
2018: PloS One
keyword
keyword
91424
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"