Dissertations / Theses on the topic 'Environmental monitoring'
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STEPHENS, JON BARTON. "ENVIRONMENTAL MONITORING DETECTOR." Thesis, The University of Arizona, 2016. http://hdl.handle.net/10150/614237.
Full textRobinson, Darren. "Integrated building environmental performance monitoring." Thesis, Anglia Ruskin University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263988.
Full textMyint, Cho Zin. "Reconfigurable Wireless Sensor Network Design for Environmental Monitoring in IoT Environment." Thesis, Curtin University, 2018. http://hdl.handle.net/20.500.11937/76187.
Full textPino, Flavio. "Development of nanomaterials for environmental monitoring." Doctoral thesis, Universitat Autònoma de Barcelona, 2015. http://hdl.handle.net/10803/325142.
Full textEnvironmental monitoring based on biosensing systems has increased its relevance not only in the research field but also in the real industrial application. This is due to the advantages of such analytical platforms especially their simplicity and their cost/efficiency. Moreover, the recent advances in nanoscience and nanotechnology increase the emerging of new nanomaterials which have interesting electrical properties such as their capacity to improve the electrode conductivity. This has a particular interest in the development of electrochemical biosensing systems. The combination of nanomaterials with electrochemical biosensing platforms can build up powerful analytical tools for the environmental monitoring. This represents the main objective of this PhD Thesis, that divided in six chapters describes the development and application of three new biosensing platforms for environmental monitoring using nanomaterials. The first chapter of the thesis gives a general introduction on environmental monitoring of pollutants and offers a brief description and classification of these compounds. This chapter also gives an overview of the relevance of the use of nanomaterials in biosensing systems for environmental monitoring with a detailed review of the last published works describing also their innovation aspects and also the possible drawbacks. In Chapter 3 the biosensing platform for environmental monitoring based on the inhibition of acetylcholinesterase is described. The developed system uses magnetic beads and acetylcholinesterase enzyme over Boron Doped Diamond Electrode. Moreover, through the use of magnetic beads and the surface characteristics of the electrode, this platform is used as multi use system with high reproducibility able also to measure the pesticide chlorpyrifos in real sample (Yokoama river, Japan). In Chapter 4 a simultaneous detection system of pollutants for catechol (a phenol derivative) and chlorpyrifos (an organophosphate pesticide), is developed. Such sensing is achieved through a SPCE modified with IrOx NPs and tyrosinase. The proposed biosensor reports improvement in the sensitivity for catechol compared to previously reported biosensors. This biosensor shows also a high sensitivity for chlorpyrifos while being used in a tyrosinase inhibition mode operation. Finally the efficiency of this biosensor is explored for real applications in river and tap water showing great possibilities for future application as a low cost platform. In Chapter 5 a free enzymatic bio-sensing system based on CuO nanoparticles for detection of phenols compounds and for a high toxic herbicide (Diuron) is proposed. Such sensing is achieved through a SPCE where CuO NPs create a stable complex with phenolic compounds that are measured through electrochemical reaction at electrode surface. Moreover it is one of the first applications using CuO NPs for environmental monitoring. CuO NPs have the function to mimic the active centre of tyrosinase obtaining results comparable with other enzymatic platforms. This analytical platform can be used for real sample applications due to the fact that the detection limit is within the requested levels of monitoring established by the legislation. Annex A shows a very interesting review over the biosensing systems inenvironmental monitoring using nanomaterials. This review was published in a very high impact factor journal (Chemical Review Impact factor of 46.658).
Williams, Iwan Gwyn. "Hand-held instrumentation for environmental monitoring." Thesis, Bangor University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262544.
Full textChang, Seung Cheol. "Disposable amperometric sensors for environmental monitoring." Thesis, University of Newcastle Upon Tyne, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310134.
Full textGong, Weidong. "Ocean sensors, for marine environmental monitoring." Thesis, University of Southampton, 2010. https://eprints.soton.ac.uk/143801/.
Full textDickerson, David Stanley. "Particulate monitoring in environmental pollution assessment." Thesis, University of Bristol, 2004. http://hdl.handle.net/1983/a66c8b21-c61f-4da7-bca8-5bd7547198b3.
Full textLi, Zhuo. "ARDUINO BASED ENVIRONMENTAL AIR MONITORING SYSTEM." Case Western Reserve University School of Graduate Studies / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=case1499093616376284.
Full textGono, Charles Saye. "Environmental surveillance monitoring XYZ-La Crosse." Online version, 2001. http://www.uwstout.edu/lib/thesis/2001/2001gonoc.pdf.
Full textJacquemai, Ivo. "Acoustic wireless sensing for environmental monitoring." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2011. https://ro.ecu.edu.au/theses/395.
Full textMokhtary, Mandana. "Sensor Observation Service for Environmental Monitoring Data." Thesis, KTH, Geodesi och geoinformatik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-95830.
Full textDhu, Tania. "Environmental monitoring using electrical resistance tomography (ERT) /." Title page, contents and abstract only, 2002. http://web4.library.adelaide.edu.au/theses/09SB/09sbd534.pdf.
Full textramezaniakhmareh, alireza. "Autonomous environmental monitoring probe for aquaculture sites." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for teknisk kybernetikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-20733.
Full textMetcalfe, Michelle J. "Monitoring environmental features using leaf stomatal characteristics." Thesis, Durham University, 1997. http://etheses.dur.ac.uk/4698/.
Full textSchmidt, Alexandra Mello. "Bayesian spatial interpolation of environmental monitoring stations." Thesis, University of Sheffield, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370075.
Full textSung, Yoonchang. "Multi-Robot Coordination for Hazardous Environmental Monitoring." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/95057.
Full textDoctor of Philosophy
Quick response to hazards is crucial as the hazards may put humans at risk and thorough removal of hazards may take a substantial amount of time. Our vision is that the introduction of a robotic solution would be beneficial for hazardous environmental monitoring. Not only the fact that humans can be released from dangerous or tedious tasks, but we also can take advantage of the robot's agile maneuverability and its precise sensing. However, the development on both hardware and software is not yet ripe to be able to deploy autonomous robots in real-world scenarios. Moreover, partial and uncertain information of hazards impose further challenges. In this these, we present various research problems addressing these challenges in hazardous environmental monitoring. Particularly, we are interested in overcoming challenges from the perspective of software by designing planning and decision-making algorithms for robots. We validate our proposed algorithms through extensive simulations and real-world experiments.
ILIE, Ana Maria Carmen. "Smart Sensor Technology for Environmental Monitoring Applications." Doctoral thesis, Università degli studi di Ferrara, 2018. http://hdl.handle.net/11392/2487882.
Full textIl progetto di ricerca si è concentrato sullo sviluppo di dispositivi innovativi utilizzando i sensori a basso costo per ottenere le concentrazioni di gas (GHG) quali anidride carbonica (CO2) e metano (CH4) e ottenere una buona qualità dell'acqua come secondo trattamento nelle acque reflue nell’impianto di trattamento. Oltre alla calibrazione del sensore, il prototipo di monitoraggio multiparametro è stato testato in diversi contesti: a) Nel laboratorio con colonne di terreno naturali, suoli, per determinare la risposta del sensore in condizioni controllate, calibrazione e validazione; b) Scala di campo in molti contesti geologici, per la qualità Aria-suolo (misure di metano e anidride carbonica, radon) nel sito di stoccaggio di gas naturale a Minerbio, Italia; Attività di perforazione e fratturazione idraulica in Greeley, Colorado, USA; per la qualità dell'acqua: impianto di trattamento delle acque reflue in Algarve, Portogallo. Il sistema di monitoraggio ha fornito un enorme set di dati per i quali è stato possibile utilizzare analisi statistiche, gestione ed elaborazione (Big DATA). L'identificazione della fonte delle emissioni di gas è stata identificata in diversi rapporti dell'IPCC secondo cui i cambiamenti climatici rappresentano l'emergenza principale per l'equilibrio socio / economico / ambientale del pianeta Terra. Non sono stati identificati valori anomali come concentrazioni di gas metano nel sito di stoccaggio di Minerbio (Italia) e nelle attività di perforazione in Greeley, Colorado, USA. Gli esperimenti con la colonna di terreno per i bacini di infiltrazione nell'impianto di trattamento delle acque reflue in Algarve, in Portogallo, ci hanno dato buoni risultati, la qualità dell'acqua è stata migliorata dopo il 2 ° trattamento. I sensori a basso costo (gas - acqua) per la qualita’ dell’aria e del suolo, hanno fornito una buona calibrazione e validazione con coefficiente di correlazione r2 di 0,70 - 0,96.
Hudson, Carmen Campos 1972. "Overview of monitoring systems used during construction and permanent structural monitoring." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/84792.
Full textIncludes bibliographical references (leaves 94-95).
by Carmen Campos Hudson.
M.Eng.
Mikkelsen, Jannick, and Larsson Anton. "Automatic monitoring of bins." Thesis, Högskolan i Halmstad, Akademin för informationsteknologi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-42986.
Full textHall, Geoffrey G. "Remote environmental sensor array system." Thesis, Kingston, Ont. : [s.n.], 2007. http://hdl.handle.net/1974/943.
Full textHolstius, David. "Monitoring Particulate Matter with Commodity Hardware." Thesis, University of California, Berkeley, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3640465.
Full textHealth effects attributed to outdoor fine particulate matter (PM 2.5) rank it among the risk factors with the highest health burdens in the world, annually accounting for over 3.2 million premature deaths and over 76 million lost disability-adjusted life years. Existing PM2.5 monitoring infrastructure cannot, however, be used to resolve variations in ambient PM2.5 concentrations with adequate spatial and temporal density, or with adequate coverage of human time-activity patterns, such that the needs of modern exposure science and control can be met. Small, inexpensive, and portable devices, relying on newly available off-the-shelf sensors, may facilitate the creation of PM2.5 datasets with improved resolution and coverage, especially if many such devices can be deployed concurrently with low system cost.
Datasets generated with such technology could be used to overcome many important problems associated with exposure misclassification in air pollution epidemiology. Chapter 2 presents an epidemiological study of PM2.5 that used data from ambient monitoring stations in the Los Angeles basin to observe a decrease of 6.1 g (95% CI: 3.5, 8.7) in population mean birthweight following in utero exposure to the Southern California wildfires of 2003, but was otherwise limited by the sparsity of the empirical basis for exposure assessment. Chapter 3 demonstrates technical potential for remedying PM2.5 monitoring deficiencies, beginning with the generation of low-cost yet useful estimates of hourly and daily PM2.5 concentrations at a regulatory monitoring site. The context (an urban neighborhood proximate to a major goods-movement corridor) and the method (an off-the-shelf sensor costing approximately USD $10, combined with other low-cost, open-source, readily available hardware) were selected to have special significance among researchers and practitioners affiliated with contemporary communities of practice in public health and citizen science. As operationalized by correlation with 1h data from a Federal Equivalent Method (FEM) β-attenuation data, prototype instruments performed as well as commercially available equipment costing considerably more, and as well as another reference instrument under similar conditions at the same timescale (R2 = 0.6). Correlations were stronger when 24 h integrating times were used instead (R2 = 0.72).
Chapter 4 replicates and extends the results of Chapter 3, showing that similar calibrations may be reasonably exchangeable between near-roadway and background monitoring sites. Chapter 4 also employs triplicate sensors to obtain data consistent with near-field (< 50 m) observations of plumes from a major highway (I-880). At 1 minute timescales, maximum PM2.5 concentrations on the order of 100 μg m–3 to 200 μg m–3 were observed, commensurate with the magnitude of plumes from wildfires on longer timescales, as well as the magnitude of plumes that might be expected near other major highways on the same timescale. Finally, Chapter 4 quantifies variance among calibration parameters for a large sample of the sensors, as well as the error associated with the remote transfer of calibrations between two sufficiently large sets (± 10 % for n = 12). These findings suggest that datasets generated with similar sensors could also improve upstream scientific understandings of fluxes resulting from indoor and outdoor emissions, atmospheric transformations, and transport, and may also facilitate timely and empirical verification of interventions to reduce emissions and exposures, in many important contexts (e.g., the provision of improved cookstoves; congestion pricing; mitigation policies attached to infill development; etc.). They also demonstrate that calibrations against continuous reference monitoring equipment could be remotely transferred, within practical tolerances, to reasonably sized and adequately resourced participatory monitoring campaigns, with minimal risk of disruption to existing monitoring infrastructure (i.e., established monitoring sites). Given a collaborator with a short window of access to a reference monitoring site, this would overcome a nominally important barrier associated with non-gravimetric, in-situ calibration of continuous PM2.5 monitors. Progressive and disruptive prospects linked to a proliferation of comparable sensing technologies based on commodity hardware are discussed in Chapter 5.
Grubinger, Michael, and Felix Strohmeier. "AUTONOMOUS ACQUISITION OF ENVIRONMENTAL DATA IN A GLOBAL NETWORK ENVIRONMENT." International Foundation for Telemetering, 2001. http://hdl.handle.net/10150/607597.
Full textThis paper presents the results of a feasibility study undertaken by the University of Salzburg (Austria), investigating the autonomous acquisition of environmental data in a global network. A suggested application which is used as the basis of this paper is a volcano monitoring system which would be able to track the activity of a volcano and act as a disaster warning system. The background Volcano observation data required for such a system is covered, before discussing the concepts for sensor data acquisition, storage and processing. A final analysis is then presented of the opportunities for the transmission by packet radio (both terrestrial and satellite).
Rodríguez-Navas, González Carlos. "Exploiting novel automated analytical methodologies for the monitoring of environmental organic pollutants, and its potential incorporation to environmental monitoring regulations." Doctoral thesis, Universitat de les Illes Balears, 2012. http://hdl.handle.net/10803/98297.
Full textWe have developed analytical methodologies based on chromatography and mass spectrometry for the detection of multiple different organic compounds in the trace levels in samples of environmental interest. Volatile organic compounds have been determined in the atmospheric air of Mallorca as well as some waste treatment plants and landfills. Pharmaceuticals for human consumption have been investigated in several samples of the aquatic environment of Mallorca as well as some wastewater treatment plants and landfill leachates. Based on these data it has been evaluated the necessity to modify the environmental monitoring regulations to save the quality of the Mallorca’s environment.
Watier, Caroline. "Environmental Monitoring at Swedish Research Stations in Antarctica." Thesis, KTH, Industriell ekologi, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-32825.
Full textAtt genomföra ett miljöövervakningsprogram i polarområdena är en komplex disciplin sombehöver medverkan och engagemeng av ett stort antal specialister inom många ämnen.Polarforskningssekretariatet är en myndighet som har till uppgift att främja och samordnasvensk polarforskning. Sekretariatet har alltid haft en hög ambitionsnivå för att beskydda ochbevara miljön i Antarktis och i dess sammanhängande ekosystem. I överensstämmelse medMadridprotokollet beträffande miljöskyddet i Antarktis, har sekretariatet infört ettmiljöövervakningsprogram i början av 1990-talet. Emellertid är programmet som det ärutformat idag inte helt opitmalt: å ena sidan har programmet försett miljöansvariga mednödvändig bakgrundsinformation för att förbättra förståelsen av området och gett möjlighetatt vidta skyddande åtgärder för miljön de svenska polar stationerna Wasa och Svea. Å andrasidan har de tillfälliga provtagningarna i kombination med ett svagt system för att bearbetatidigare data orsakat luckor i kunskaperna kring miljön i lokalområdet. Det är darför sekretariatet har bestämt sig för att ta fram och införa ett mer omfattandemiljöövervakningsprogram som kan användas till att både utvärdera effekterna från demänskliga aktiviteterna runt omkring de svenska forskningsstationerna, och förutsägatendenser kring miljötillståndet.Förutsättningarna för att det nya miljöprogrammet ska få önskat utfall är att det harväldefinierade målsättningar, standardiserade provtagningsmetoder och ett effektivtdatabehandlingssystem. Dessutom behöver programmet införlivas ibeslutsfattandesprocessen. Dessutom, internationellt samarbete med stationer i områdetkommer att göra programmet mer värdefullt.Allteftersom forskningen gör framsteg och projekten i Antarktis blir fler och samtidgt meravancerade, så blir behovet för att beskydda Antarktismiljö mer och mer påtagligt. Vi vet att iAntarktis is kan det finnas svar på flera av framtidens miljöfrågor.
Établir un monitoring environnemental à long terme dans un environnement polaire est unediscipline à la fois complexe et transversale qui demande la participation et l’implication d’ungrand nombre de spécialistes dans des domaines divers et variés.Le Secrétariat de Recherche Polaire Suédois, responsable de la promotion et de lacoordination de la recherche dans les régions polaires a toujours eu la volonté de protégerl’environnement en Antarctique ainsi que les écosystèmes associés et dépendants. En accordavec le Protocole de Madrid relatif à la protection de l’environnement en Antarctique, lesecrétariat a mis en oeuvre un monitoring environnemental autour de ses stations de rechercheWasa et Svea dès le début des années 1990. Cependant, le bilan de ce programme est plutôtcontrasté ; d’un coté, il a fourni les informations nécessaires à la compréhension du milieu eta permis de prendre les mesures indispensables à sa préservation. D’un autre coté, leséchantillonnages et mesures sporadiques et un système de management des donnéesinapproprié laissent subsister des inconnus dans la perception environnementale de la région.C’est pourquoi, profitant de l’année polaire internationale, le secrétariat à décider d’établir unmonitoring environnemental sur le long terme permettant non seulement d’évaluerconcrètement les impacts d’origine anthropogénique autour des stations de recherche suédoisemais aussi d’en prévoir la tendance.La réussite d’un tel programme repose sur quelques éléments clés : des objectifs réalisables etclairement définis, des méthodes d’échantillonnages standardisées et un système demanagement des données efficace. De plus, pour être efficace, le monitoring environnementaldoit être en étroite relation avec le système de prise de décision dans l’organisme. Enfin, cemonitoring environnemental ne pourra qu’être valorisé par une collaboration internationale.Au fur et à mesure des progrès de la science, il apparait de plus en plus évident de protégerl’Antarctique qui garde probablement dans ses glaces les réponses aux questionsenvironnementales d’aujourd’hui et de demain.
www.ima.kth.se
Suzuki, Takeharu, and n/a. "Integrated, Intelligent Sensor Fabrication Strategies for Environmental Monitoring." Griffith University. School of Microelectronic Engineering, 2004. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20040813.131206.
Full textTruax, Stuart. "A microscale chemical sensor platform for environmental monitoring." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/45780.
Full textSchädle, Thomas [Verfasser]. "Mid-infrared sensors for environmental monitoring / Thomas Schädle." Ulm : Universität Ulm, 2017. http://d-nb.info/1124067841/34.
Full textOsterloff, Jonas [Verfasser]. "Computer Vision for Marine Environmental Monitoring / Jonas Osterloff." Bielefeld : Universitätsbibliothek Bielefeld, 2018. http://d-nb.info/1169314678/34.
Full textWright, Philip. "Extending the scope of unattended environmental noise monitoring." Thesis, University of Southampton, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320714.
Full textBARBOSA, PAULO CESAR DE CAMPOS. "APPLICATIONS OF LASER INDUCED FLUORESCENCE TO ENVIRONMENTAL MONITORING." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2003. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=4041@1.
Full textA tomada de consciência dos riscos ambientais em escala global e o desenvolvimento científico e tecnológico têm incrementado a demanda pelo sensoriamento das condições ambientais marítimas. A distribuição da população do fitoplâncton é o indicador mais utilizado para avaliar a qualidade e a biomassa de ambientes marinhos. Uma característica diferencial do fitoplâncton é a presença da clorofila a, que apresenta fluorescência in vivo na região do vermelho do espectro visível, e que permite o uso de técnicas de sensoriamento remoto para sua detecção. Um radar-laser baseado na detecção da fluorescência do alvo é mais comumente denominado LIF-LIDAR (Laser Induced Fluorescence - LIght Detection And Ranging) e se constitui em uma ferramenta útil para o monitoramento da distribuição de clorofila a nos oceanos, principalmente quando se utiliza uma radiação laser na faixa de comprimento de onda associada à cor verde. O LIDAR-PUC, cuja fonte de excitação é o 2º harmônico de um laser de Nd-YAG, foi ajustado para a detecção e discriminação espectral de emissões inelásticas decorrentes da excitação a 532nm; em especial, a fluorescência da clorofila a. Nesta tese foram desenvolvidos algoritmos para a extração de parâmetros de interesse ambiental, em especial a concentração relativa da clorofila a. Estas metodologias foram testadas quanto a sua repetitividade, linearidade e aplicabilidade em ambiente real. Finalmente, os valores calculados foram analisados em conjunto, indicando sua utilidade para o monitoramento efetivo de ambientes marinhos.
Global scale environmental risks and scientific and technological development have increased demands on marine environment monitoring. Phytoplankton distribution is the most frequently used marker employed to assess biomass in marine environment. Analysis of chlorophyll-a plays a central role on phytoplankton studies once this pigment, present in every phytoplankton algae species, exhibits fluorescence in the red region of visible spectrum, thus allowing its detection by remote sensing techniques. A radar-laser based on fluorescence detection, usually called a LIF-LIDAR (Laser Induced Fluorescence - LIght Detection And Ranging), is a valuable tool for monitoring chlorophyll-a distribution in ocean waters, especially when green light lasers are employed. LIDAR-PUC was settled to function with its second harmonic Nd-YAG laser as excitation source. The equipment was adjusted for detection and spectral discrimination of inelastic emissions resulting from excitation at 532nm, with special attention to chlorophyll a fluorescence. In this study, algorithms were developed for the extraction of environmental parameters such as relative chlorophyll a concentration. These algorithms were analyzed regarding the following aspects: repeatability, linearity and applicability to the real world. Finally, ensembles were analyzed, pointing to their usefulness for effective marine environment monitoring.
Middleton, Daniel. "Environmental monitoring and biomonitoring of human arsenic exposure." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/environmental-monitoring-and-biomonitoring-of-human-arsenic-exposure(69720732-41f2-48c3-9c4c-f3752e0bb6b0).html.
Full textIyiola, Samuel Oluwagbemi. "Moteino-Based Wireless Data Transfer for Environmental Monitoring." Thesis, University of North Texas, 2017. https://digital.library.unt.edu/ark:/67531/metadc984271/.
Full textKandula, Harsha. "Development Of A Testbed For Multimedia Environmental Monitoring." Thesis, University of North Texas, 2011. https://digital.library.unt.edu/ark:/67531/metadc103342/.
Full textDodson, Jacob Christopher. "Guided Wave Structural Health Monitoring with Environmental Considerations." Diss., Virginia Tech, 2012. http://hdl.handle.net/10919/27070.
Full textPh. D.
WEI, XINGTAO. "SILICON MICROELECTRODE ARRAYS FOR IN SITU ENVIRONMENTAL MONITORING." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1123783607.
Full textSchädle, Thomas Fabian [Verfasser]. "Mid-infrared sensors for environmental monitoring / Thomas Schädle." Ulm : Universität Ulm, 2017. http://d-nb.info/1124067841/34.
Full textSuzuki, Takeharu. "Integrated, Intelligent Sensor Fabrication Strategies for Environmental Monitoring." Thesis, Griffith University, 2004. http://hdl.handle.net/10072/367295.
Full textThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Microelectronic Engineering
Full Text
Malfante, Marielle. "Automatic classification of natural signals for environmental monitoring." Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAU025/document.
Full textThis manuscript summarizes a three years work addressing the use of machine learning for the automatic analysis of natural signals. The main goal of this PhD is to produce efficient and operative frameworks for the analysis of environmental signals, in order to gather knowledge and better understand the considered environment. Particularly, we focus on the automatic tasks of detection and classification of natural events.This thesis proposes two tools based on supervised machine learning (Support Vector Machine, Random Forest) for (i) the automatic classification of events and (ii) the automatic detection and classification of events. The success of the proposed approaches lies in the feature space used to represent the signals. This relies on a detailed description of the raw acquisitions in various domains: temporal, spectral and cepstral. A comparison with features extracted using convolutional neural networks (deep learning) is also made, and favours the physical features to the use of deep learning methods to represent transient signals.The proposed tools are tested and validated on real world acquisitions from different environments: (i) underwater and (ii) volcanic areas. The first application considered in this thesis is devoted to the monitoring of coastal underwater areas using acoustic signals: continuous recordings are analysed to automatically detect and classify fish sounds. A day to day pattern in the fish behaviour is revealed. The second application targets volcanoes monitoring: the proposed system classifies seismic events into categories, which can be associated to different phases of the internal activity of volcanoes. The study is conducted on six years of volcano-seismic data recorded on Ubinas volcano (Peru). In particular, the outcomes of the proposed automatic classification system helped in the discovery of misclassifications in the manual annotation of the recordings. In addition, the proposed automatic classification framework of volcano-seismic signals has been deployed and tested in Indonesia for the monitoring of Mount Merapi. The software implementation of the framework developed in this thesis has been collected in the Automatic Analysis Architecture (AAA) package and is freely available
CHIADO', ALESSANDRO. "Evaluation of new biorecognition elements for environmental monitoring." Doctoral thesis, Politecnico di Torino, 2013. http://hdl.handle.net/11583/2511708.
Full textXHIXHA, Gerti. "Advanced gamma-ray spectrometry for environmental radioactivity monitoring." Doctoral thesis, Università degli studi di Ferrara, 2012. http://hdl.handle.net/11392/2388782.
Full textOjo, Temitope O. "Development of environmental and oceanographic real-time assessment system for the near-shore environment." Texas A&M University, 2003. http://hdl.handle.net/1969.1/3875.
Full textHess, Philipp. "The determination and environmental significance of planar aromatic compounds in the marine environment." Thesis, Robert Gordon University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388494.
Full textDuan, Hongmei. "Monitoring and characterization of toxic cyanobacterial blooms." Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=66915.
Full textUn suivi de la dynamique des populations de Microcystis qui ont la capacité de produire des toxines a été effectué à la baie Missisquoi (partie canadienne du lac Champlain) à l'aide d'outils moléculaires. Deux types de membranes ont été utilisés : un filtre standard (GF/C) pour quantifier les microcystines, et un filtre pour capturer les bactéries. Cette étude a démontré que le filtre standard (GF/C) est approprié pour déterminer les concentrations de microcystines, mais qu'il n'est pas adéquat pour caractériser avec des techniques moléculaires, les populations de bactéries et de cyanobactéries. Une bonne corrélation a été obtenue en 2006, entre les concentrations de microcystines déterminées par les méthodes ELISA et HPLC et le nombre de copies du gène mcyD (impliqué dans la biosynthèse des microcystines). Les résultats ont donc démontré le potentiel de cette méthode de PCR en temps réel, ciblant le gène mcyD, pour la détection et le suivi des proliférations de cyanobactéries qui produisent des toxines. La présence du pathogène fécal Escherichia coli a été évaluée afin de déterminer la relation entre l'application de lisier et de fumier et l'augmentation dans l'eau du lac, des nutriments qui causent les proliférations. Une bonne corrélation a été obtenue entre l'application du lisier et du fumier et les précipitations ainsi qu'entre les concentrations élevées d'azote dans le lac, suggérant qu'une meilleure gestion des matières fertilisantes est nécessaire pour réduire les apports de nutriments dans la baie Missisquoi.
Utami, Dian Wahyu. "Visual simulation of Brisbane River-Moreton Bay System in a decision framework environment /." St. Lucia, Qld, 2002. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17279.pdf.
Full textBayat, Daryoush. "Development of a long range wireless sensor platform." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2011. https://ro.ecu.edu.au/theses/469.
Full textEichinski, Philip. "Smart sampling of environmental audio recordings for biodiversity monitoring." Thesis, Queensland University of Technology, 2018. https://eprints.qut.edu.au/123022/1/Philip_Eichinski_Thesis.pdf.
Full textLundgren, Elida. "Evaluating camera monitoring of breeding seabirds." Thesis, Uppsala universitet, Institutionen för biologisk grundutbildning, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-412458.
Full textStudien gjordes i samarbete med Baltic Seabird Project med syftet att undersöka möjligheten att använda kameror för att övervaka häckningsframgång hos Sillgrissla på Stora Karlsö. Häckningsframgång definieras som tiden från att ägget läggs, kläcks, och ungen överlever i 15 dagar då den anses vara redo att lämna boet. Övervakning med kameror innebär att häckningsytan där fåglarna sitter fotograferas med ett bestämt tidsintervall för att försöka fånga avkomman på bild och därmed se att den har överlevt. Undersökningen har genomförts på Stora Karlsö genom att installera kameror i den konstgjorda häckningshyllan Auk Lab och bedöma hur väl metoden fungerar. Huruvida avkomman fångas på bild eller inte var den huvudsakliga frågeställningen, med en sekundär frågeställning som rör skillnaden mellan den traditionella insamlingsmetoden som genomförs genom att en person dagligen kontrollerar fåglarna. Resultaten visar att kameraövervakning kan vara en användbar metod, då det går att fånga avkomman på bild men avstånd och vinkel är några av de avgörande faktorerna för att framgångsrikt kunna observera avkomman. Strömtillförsel och minneskortets storlek är avgörande faktorer för att göra vinningar tidsmässigt jämfört med den traditionella metoden. Fortsatt utveckling av rutinerna för kameraövervakning är nödvändigt för att få en pålitlig datainsamling. 2
Khalil, Atheer H. "An adaptive data compression system for environmental telemetry applications." Thesis, University of Hull, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262416.
Full textGraffelman, Jan. "Contributions to the multivariate Analysis of Marine Environmental Monitoring." Doctoral thesis, Universitat Politècnica de Catalunya, 2000. http://hdl.handle.net/10803/6525.
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