Дисертації з теми "Mobility track"
Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями
Ознайомтеся з топ-50 дисертацій для дослідження на тему "Mobility track".
Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.
Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.
Переглядайте дисертації для різних дисциплін та оформлюйте правильно вашу бібліографію.
MENGHI, MARTA. "Containers off the track, abitare la mobilità tra logistica ed emergenza." Doctoral thesis, Università degli studi di Genova, 2020. http://hdl.handle.net/11567/1009920.
Повний текст джерелаCayèré, Cécile. "Modélisation de trajectoires sémantiques et calcul de similarité intégrés à un ETL." Electronic Thesis or Diss., La Rochelle, 2022. http://www.theses.fr/2022LAROS042.
Повний текст джерелаOver the last decade, we have seen a rise in popularity of mobile applications based on phone location. These applications collect mobility tracks which describe the movement of users overtime. In the DA3T regional project, we hypothesise that the analysis of tourists’ mobility tracks can help planners in the management and enhancement of tourist areas. The objective is to design methods and tools to help analyse these tracks. This thesis focuses on the processing of mobility tracks and proposes a modular platform for creating and executing processing chains on these data. Throughout the modules of a processing chain, the raw mobility track evolves into semantic trajectories. The contributions of this thesis are: (i) a multi-level and multi-aspect semantic trajectory model and (ii) two measures that compute the similarity between two semantic trajectories along spatial, temporal and thematic dimensions. Our model (i) is used as a transition model between modules of a processing chain. We tested it by instantiating semantic trajectories from different datasets of various domains. Our two measures (ii) are integrated in our platform as processing modules. These measures present originalities: one is the combination of sub-measures, each allowing to evaluate the similarity of trajectories on the three dimensions and according to three different levels of granularity, the other is the combination of two bidimensional sub-measures centred around a particular dimension. We evaluated our two measures by comparing them to other measures and to the opinion of geographers
Kathe, Claudia. "Improving mobility after corticospinal tract injury." Thesis, King's College London (University of London), 2016. https://kclpure.kcl.ac.uk/portal/en/theses/improving-mobility-after-corticospinal-tract-injury(ca3be9d6-a198-42ef-bb32-ab28a59e273c).html.
Повний текст джерелаOliveira, Elisa Quint de Souza de. "Áreas marginais às rodovias estaduais: segurança e mobilidade em Florianópolis, SC Brasil." Universidade do Estado de Santa Catarina, 2012. http://tede.udesc.br/handle/handle/1360.
Повний текст джерелаCoordenação de Aperfeiçoamento de Pessoal de Nível Superior
Marginal areas of the State Highways and Roads, the safety e mobility in Florianopolis, SC Brazil The objective with this research is to investigate the relation between the protection of the marginal areas of the State Highways and Roads, the safety e mobility in Florianópolis considering; the specific legislation that rules the usage of these areas, the registered cases at the related Public Office and the public policies that foresee the planning of these areas. The Official Track is used as a concept and theoretical reference. From different approaches and understanding that through appropriated public policies, it is possible to build a plan that safeguard these marginal areas providing safety, and guaranteeing urban mobility compromised by the agglomerations and disordered occupations. Other concept is the Urban Mobility, regarded as essential to the quality of life guaranty, allowing city access and the sustainable urban development. The methodology used as form of approach will be qualitative, based on bibliographical research, documental and pre-structured interviews on the effort to join the legislation regarding the subject, the techniques applied to the area s management, the experience from the subjects involved and the real cases, both lasts chosen by opened administrative procedures at the responsible office for roads and highways in the Florianopolis County
O objetivo com a pesquisa é investigar a relação entre a proteção das áreas marginais às rodovias estaduais, a segurança e a mobilidade em Florianópolis, considerando a legislação específica que disciplina o uso desses espaços, os casos concretos de ocupação registrados no órgão público responsável e as políticas públicas que vislumbrem o planejamento dessas áreas. Como referencial teórico, o conceito norteador é o de faixas de domínio, a partir de diferentes abordagens, entendendo que por meio de políticas públicas adequadas é possível construir um projeto de ordenamento que salvaguarde as margens das rodovias, proporcionando a segurança e garantindo a mobilidade urbana, comprometida com as aglomerações geradas pela ocupação desordenada. Outro conceito norteador é o de Mobilidade Urbana, entendida como elemento essencial para a garantia da qualidade de vida, permitindo o acesso à cidade e o desenvolvimento urbano sustentável. A metodologia empregada como forma de abordagem do tema será a qualitativa baseada em pesquisa bibliográfica, documental e entrevistas semiestruturadas na tentativa de unir a legislação sobre o tema, a técnica aplicada para a gestão do espaço, a experiência dos envolvidos e os casos reais, estes últimos colhidos por meio de procedimentos administrativos em trâmite no órgão com circunscrição sobre as rodovias estaduais no município de Florianópolis
Ruggieri, Flavia. "Environmental mobility of potentially toxic trace elements of Andean volcanic ashes." Doctoral thesis, Universitat de Barcelona, 2011. http://hdl.handle.net/10803/39082.
Повний текст джерелаLockwood, Cindy Louise. "Biogeochemical processes and trace element mobility in alkaline waste affected soils." Thesis, University of Leeds, 2014. http://etheses.whiterose.ac.uk/7555/.
Повний текст джерелаSukkariyah, Beshr. "Trace Metals Mobility in Soils and Availability to Plants from a Long-Term Biosolids Amended Soil." Diss., Virginia Tech, 2003. http://hdl.handle.net/10919/11098.
Повний текст джерелаPh. D.
Aggarwal, Jugdeep K. "The mobility of trace elements and boron isotopes in Icelandic hydrothermal systems." Thesis, University of Bristol, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294571.
Повний текст джерелаSaunders, Ruth. "Investigations of processes controlling trace element mobility in Scottish freshwater loch sediments." Thesis, University of Edinburgh, 2003. http://hdl.handle.net/1842/12901.
Повний текст джерелаBotes, Paul Johannes. "Investigation of mobility of trace elements in river sediments using ICP-OES." Pretoria : [s.n.], 2003. http://upetd.up.ac.za/thesis/available/etd-01182005-091457.
Повний текст джерелаLasley, Katrina. "Chemistry and Transport of Metals from Entrenched Biosolids at a Reclaimed Mineral Sands Mining Site in Dinwiddie County, Virginia." Thesis, Virginia Tech, 2008. http://hdl.handle.net/10919/33994.
Повний текст джерелаMaster of Science
Magnani, Antonio. "Simulazione di mobilità in ambito veicolare." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amslaurea.unibo.it/4581/.
Повний текст джерелаSchindl, Roland [Verfasser]. "Ultra trace analysis and mobility of palladium emissions from automotive catalytic converters / Roland Schindl." Ulm : Universität Ulm. Fakultät für Naturwissenschaften, 2015. http://d-nb.info/1075253357/34.
Повний текст джерелаDüker, Anders. "Natural aquatic colloidal matter : characteristics and impact on the mobility of trace metals and organics /." Linköping : Tema, Univ, 1998. http://www.bibl.liu.se/liupubl/disp/disp98/arts180s.htm.
Повний текст джерелаHindersmann, Iris [Verfasser], and Tim [Akademischer Betreuer] Mansfeldt. "Trace elements in floodplain soils - effects of redox conditions on the mobility of trace elements and volatilization of mercury / Iris Hindersmann. Gutachter: Tim Mansfeldt." Köln : Universitäts- und Stadtbibliothek Köln, 2014. http://d-nb.info/1060190427/34.
Повний текст джерелаMaraška, Arūnas. "Mobilios lauko kavinės projektas." Bachelor's thesis, Lithuanian Academic Libraries Network (LABT), 2010. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20100907_095913-73647.
Повний текст джерелаŠią kavinę projektavau iš sunkvežimio priekabos, kurios šonai atsilenkia ir suformuoja pakylą. Ant vidurinės platformos dalies suprojektavau barą su sandėliu, o aplinkui išdėsčiau staliukus su kėdėmis. Visa tai dengia brezentinis stogas kurio išskleidimo mechanizmas sumontuotas priekabos stogo dalyje. Taip pat, esant poreikiui, bus sudarytos sąlygos aplink šią kavinę sustatyti papildomus stalus ir kėdes.
Oyewumi, Oluyinka. "The Release and Mobility of Trace Elements from Poultry Litter: Insights from Field, Laboratory and Modeling Experiments." Diss., Virginia Tech, 2012. http://hdl.handle.net/10919/77156.
Повний текст джерелаPh. D.
Marcel, Olivier. "Des horizons à la trace : géographie des mobilités de l'art à Nairobi." Thesis, Bordeaux 3, 2014. http://www.theses.fr/2014BOR30061.
Повний текст джерелаThis Ph.D. thesis tackles the places and circulations involved in the making of art in a southern metropolis. It is situated at the crossroads of an urban geography concerned with the social and spatial layout through which this “ordinary” activity is organized, and a geographical approach of art that places actors’ trajectories at the heart of the analysis. Capital city in a postcolonial State, East African metropolis and periphery of the “global archipelagic economy”, Nairobi is a case of the encounter between metropolization and globalization. In the trail of the theories on the worlding of material geography, this study aims at documenting and mapping the reconfigurations of art space triggered by these dynamics. The novelty of this thesis is to assemble the entire range of art scenes and products of a city, using the common thread that is the spatial dimension of their circulations. The material studied (artists’ discourse and curriculum vitae; art centres activity and archive) takes on both the measureable circulations of artists while confronting them to their horizon of accomplishment. These are made up of the persistence of strong rural ties and the connectivity of a globally connected city. The method deployed relies on the notion of traceability and is based on a qualitative survey through observation. An exhibition, a performance, a mobility grant, a visiting curator, collector or benefactor, the daily circulations and socializing of an artist: all these individual, material, ideal or financial movements constitute the raw material of this research. The notion of art mobility is here understood as the articulation between artists’ agency and spatial tactics on the on hand, and the material and institutional means of dealing with distance on the other hand. Art mobility questions the conditions, directions and meanings of these movements as much as the growth of the actors engaged
Tatto, Jilmar Augustinho. "Mobilidade urbana em São Paulo: aplicação de soluções imediatas e eficazes." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/3/3143/tde-23092015-131419/.
Повний текст джерелаThis work presents the impact of management measures such as the establishment of exclusive tracks in the city of São Paulo traffic that is associated with the semaphore restructuring, has improved urban mobility in São Paulo. To do so, construct the scenario of urban mobility and then analyzed how much the deployment of more than 400 km of exclusive tracks for the past two years impacts on increasing the average speed of buses and reduced growth of traffic slowdowns. The experience of other major cities indicates that membership of the new management tools is a viable alternative to the promotion of qualitative advances in urban mass transit and transportation in general, as well as in the integration between motorized transport modal and non-motorized, the displacement of people and cargo with more efficiency and safety. Finally, point out other technological possibilities that can magnify the positive results obtained in mobility in Sao Paulo.
Gordon, William. "Mobile livelihoods: a case study of Lithuanian international long-haul truck drivers." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2011. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20110607_135718-12080.
Повний текст джерелаTyrimo klausimas. Ką reiškia namai, darbas bei kasdieniniai poreikiai Lietuvos tarptautinių tolimųjų reisų vairuotojams, „gyvenantiems ant ratų“ ? Tyrimo problema ir reikšmė. Šio tyrimo tikslas yra pažvelgti į Lietuvos tarptautinių tolimųjų reisų vairuotojų. kultūrą ir vietą mobilumo ir mobiliojo pragyvenimo kontekste. Lietuvos žiniasklaidoje tolimųjų reisų vairuotojai dažnai yra apibūdinami neigiamai arba hiperbolizuotai, įskaitant pasakojimus apie transportą, nelaimingus atsitikimus, kontrabandą, amoralų elgesį, ar problemas su įstatymu. Šis tyrimas yra atsakas į tokį suvokimą ir motyvuojama tuo, kad Lietuvoje nebuvo atlikta tolimųjų reisų vairuotojų gyvenimo kokybiško tyrimo. Tyrimo uždaviniai: 1. Sukurti teorinį pagrindą, skirtą analizuoti ir interpretuoti mobilų gyvenimą, taikant įvairius teorinius požiūrius į mobilumą, vietą, namus, bendruomenę ir etninius skirtumus. 2. Pateikti ir išanalizuoti empirinį darbą apie Lietuvos tolimųjų reisų vairuotojus, remiantis eminiais terminais - "kasdienybė" ir "namai". 3. Pagal atliktą analizę, palyginti požiūrį į mobiliojo gyvenimo esmę kartu su eminiais terminais - "kasdienybė" ir "namai" – tarp Lietuvos ir Kamerūno tolimųjų reisų vairuotojų. Metodai. Taikytas duomenų rinkimas apie Lietuvos tolimųjų reisų vairuotojus, kurie vidutiniškai praleidžia 5-6 dienas ar daugiau kelyje, su 2-4 dienomis per mėnesį "namuose" (Lietuvoje). Empirinio skyriaus duomenys pagrįsti dviejų pagrindinių asmenų, su kuriais aš praleidau 3 ½... [toliau žr. visą tekstą]
Lindegren, Daniel. "Visualisera personuppgifter i ett tidslinjegränssnitt : Utvärdering av ett mobilt användargränssnitt till Data Track i A4Cloud-projektet." Thesis, Karlstads universitet, Handelshögskolan, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-36277.
Повний текст джерелаA4Cloud
Rustioni, Greta [Verfasser], and Hans [Akademischer Betreuer] Keppler. "Trace Element Mobility in Aqueous Fluids and the Cause of Melting in Subduction Zones / Greta Rustioni ; Betreuer: Hans Keppler." Bayreuth : Universität Bayreuth, 2021. http://d-nb.info/1239177704/34.
Повний текст джерелаTaneez, Mehwish. "Stabilisation d’un sédiment marin pollué en utilisant des résidus de bauxite : évaluation de la mobilité d’éléments trace." Thesis, Nice, 2016. http://www.theses.fr/2016NICE4036/document.
Повний текст джерелаMarine sediments concentrate various pollutants and subsequent sedimentation of harbors and ports require periodic dredging to maintain satisfactory depth of waterways. Direct land deposition of contaminated marine dredged sediments pose risk to the environment due to possible leaching of trace elements. In this context, we aimed to study the feasibility of trace elements stabilization by mixing 5% and 20% of bauxite residues (bauxaline®, bauxsol and neutralized bauxaline®) with composted dredged marine sediment. The treatment efficiency was evaluated by monitoring the leached trace elements concentration and toxicity of sediment leachates. 20% amendment application successfully stabilized cationic pollutants (Cu, Cd, Zn) up to 40-80%, and decreased the toxicity of sediment leachates. Whereas, anionic pollutants (As, Mo) were less immobilized require further investigation
Kakonyi, Gabriella. "The oxidative transformation of green rust sulphate and its influence on the mobility of trace elements : applications to remediation processes." Thesis, University of Leeds, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.539697.
Повний текст джерелаQasim, Bashar Hussein. "Détermination, spéciation et biodisponibilité des éléments traces métalliques dans les sols contaminés et technosols." Thesis, Orléans, 2015. http://www.theses.fr/2015ORLE2069/document.
Повний текст джерелаThis thesis dealt with the determination and study of the ecodynamics of trace metals in technosols highly contaminated in metals and metalloids in the context of natural revegetalisation or phytoremediation. Two sequential extraction schemes were used jointly with selective extractions in parallel with the determination of the total metals concentration in soils, the total dissolved metals concentration in the soil pore water, the metals labile pool (DGT) and germination tests with dwarf beans to investigate the speciation, mobility and phytoavailability of (Zn, Pb, Cd, As and Sb) for technosols of two post-mining (La Petite Faye) and industrial (Mortagne du Nord) sites. Additionally, young plants of P. euramericana Dorskamp were cultivated in rhizobox on Mortagne du Nord technosols to investigate the rhizospheric effect on the mobility of metals. Moreover, the effect of nitrogen addition under nitrate and ammonium on the behavior of these metals has been investigated for P. euramericana Dorskamp for the same soils. Despite the high total metals and metalloids concentration in the La Petite Faye soils, the mobility of these potentially toxic elements is limited because of their association with the residual fraction. The phytoavailability is also limited and correlated with the labile pool of technosols. The culture of P. euramericana Dorskamp generated a rhizospheric effect characterized by an increase of the pH and concentration of dissolved organic carbon (DOC) in the soil pore water and a decrease in the total dissolved concentration of metals (Zn, Pb et Cd) in the soil pore water. The addition of nitrogen under nitrate or ammonium respectively increased and decreased the soil pore water pH and in the case of ammonium the DOC also increased and stabilized metals in the rhizosphere in comparison to control soils
Tapia, Zamora Joseline Soledad. "Sources, Mobility and Bioavailability of Trace Metals and Metalloids in the Historically Mining and Smelter Impacted Altiplanean City of Oruro, Bolivia." Tesis, Universidad de Chile, 2011. http://www.repositorio.uchile.cl/handle/2250/102587.
Повний текст джерелаTafuri, Mary Anne. "'Marrying in and eating out' : mobility, food and social dynamics in Bronze Age southern Italy : trace element analysis at Sant'Abbondio (Pompeii, Naples)." Thesis, University of Southampton, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.412268.
Повний текст джерелаAbi, ghanem Carine. ""speciation" des trois elements trace mercure, plomb et cadmium dans les sediments marins des zones cotieres libanaises." Phd thesis, AgroParisTech, 2008. http://pastel.archives-ouvertes.fr/pastel-00005015.
Повний текст джерелаCostantini, Hervé. "La mobilité sociale : Modèles et traces." Phd thesis, Conservatoire national des arts et metiers - CNAM, 2012. http://tel.archives-ouvertes.fr/tel-00770978.
Повний текст джерелаKaschl, Arno. "Trace metal binding by organic matter from municipal solid waste compost and consequences for mobility in compost amended soils under semiarid conditions (Gaza strip) /." Aachen : Shaker, 2001. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=009571814&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
Повний текст джерелаGounou, Catherine. "Mobilité des éléments traces métalliques dans les sédiments : couplage et comparaison des approches chimique et microbiologique." Thesis, Paris Est, 2008. http://www.theses.fr/2008PEST0074/document.
Повний текст джерелаAntropic activities lead to the metallic contamination of river sediments. Most of trace metals are sorbed on sediments but a part of them can be released into aquatic environment when environmental conditions are modified. This is often due by the autochthonous microbial activity. Microbial activites and their consequences on the mobility of metals have been widely studied in soils. Metals are released through direct or indirect microbial mechanisms. Such studies in the case of sediments are very seldom. However, it can be usefull to understand the microbial mechanisms of metal release in sediments, and particularly for a good management of dredged sediments. In this environmental framework, the aim of this research work was to understand and to evaluate the role of the microbial and chemical mechanisms in the release of metals from river sediments in anaerobic conditions. Firstly, sediments from the Marne and Seine rivers were incubated in anaerobic conditions. A high solubilisation of iron and manganese occurred associated to the solubilisation of trace metals (Co, Cu, Ni, Pb). Meanwhile, organic acids were produced and the medium was acidified. Thus fermentation was supposed to be the main process of microbial metabolism. Furthermore these observations led us to suppose the presence of iron-reducing bacteria. In a second step, the extent of the iron-reducing activity was studied. The main iron-reducing bacteria identified in the Marne sediments belonged to the species Clostridium butyricum and Paenibacillus polymyxa. The use of a geochemical model revealed that fermentation and reduction of iron(III) were the main metabolic pathways. Finally direct (enzymatic reduction) and indirect (complexation with organic acids, acidification) impacts of iron-reducing bacteria on the release of metals were compared. Acidification and organic acids had a weak impact on metal solubility in the range of studied pH (between 6,5 and 5). Enzymatic reduction is the main mechanisms of metal release in anaerobic conditions. Indeed the metallic concentrations can be 40 times higher in the presence of iron-reducing bacteria
Nafeh, Kassir Lina. "Les métaux lourds dans les engrais phosphatés et les sulfates rejetés par les industries des fertilisants : recherche sur leur transfert et leur mobilité dans les sols libanais." Thesis, Université de Lorraine, 2012. http://www.theses.fr/2012LORR0332/document.
Повний текст джерелаTo determine the impact and risk of chemical fertilizers, from their manufacture to their amendment, on soil contamination by trace metals, the study of their mobility and transfer would be necessary. The objective of this work was to evaluate the source of soil contamination by trace elements around the industry of chemical fertilizers, and to follow the temporal evolution of mobility and transfer of these elements in the profile of agricultural soil amended by superphosphate (SSP) fertilizers or phosphogypsum. To achieve our objective, we used techniques allowing the determination of structural and mineralogical characterization of collected soil samples, such as X-ray diffraction and electron microscopy. Chemical characterization related to the total concentration of trace and major elements of collected soils was established. As mobility was unstable over time, depending on several physico-chemical parameters such as pH, redox potential, and organic matter content, a sequential extraction was adopted throughout the study over time in the amended soil profile to a depth of 55 cm. In addition, the absorption of trace elements by agricultural crops cultivated over land amended with fertilizer or phosphogypsum was analyzed over time to assess the risk of their transfer to the food chain, especially the human food chain, imposing health hazards. A comparison between the effects of the application of phosphogypsum and phosphate fertilizer was carried out in concluding this work
Al-Sid-Cheikh, Maya. "Impact des oxydes de fer naturels et des nanoparticules manufacturées sur la dynamique des éléments traces dans les sols de zones humides." Thesis, Rennes 1, 2015. http://www.theses.fr/2015REN1S144.
Повний текст джерелаNanoscience is based on changes in particle properties when their diameter is below 100 nm (ie nanoparticles, NPs). Considering the increasing use of such NPs and their discharge into the environment, the assessment of their risks to human health and the environment is a major issue. Underneath the protection of waters and soils, the surface water assessment quality is particularly important, especially in wetlands, where the toxic metals dynamic (e.g. As, Pb, Ni, Cr , Hg) is complex and depends on the redox conditions of the environment. As magnetite (nano-Fe3O4), a natural or manufactured NP, is known for its significant adsorption capacity with heavy metals, their interactions in riparian wetlands with trace metals (TMs) remain critical concerning their direct of indirect impact on trace metals (TMs) mobility. The objective of this thesis was to study the role of manufactured nano-Fe3O4 (~ 10nm) and natural iron oxides on the TMs dynamics in wetland surface waters and soils. Therefore, in a first part considering natural colloidal precipitates from reoxidation products from riparian areas (subject to redox oscillations), a spatial distribution of elements was performed using nanoSIMS isotope mapping (i.e. 75As-, 56Fe16O-, sulfur (32S-) and organic matter (12C14N-), while the sulfur speciation was evaluated X-ray adsorption at K edge of the sulfur (S) (XANES). These analyzes allowed to highlight the interactions between natural iron oxides, natural organic matter (NOM) and a toxic metalloid, As. Our results suggest, with a statistical colocalization of nanoSIMS images, the existence of two interaction types: (1) 12C14N-, 32S-, 56Fe16O- and 75As-, and (2) 12C14N-, 32S- and 75As-. The coexistence of the oxidized and reduced forms of S, confirmed by the XANES analyses might be attributed to the slow oxidation kinetic of MON. Thus, this first part shows that in addition to the known interactions between MON, iron oxides and As, a possible direct interaction between As and NOM through sulfur functional groups (e.g. thiols) are also possible in oxidized environment. In a second part, the effect of nano-Fe3O4 (~ 10 nm) on trace elements (TEs) and colloids mobility in the organomineral horizon of a natural wetland soil was assessed using soil columns. Our results show that the nanoparticles coating influences the mobility of NOM and TMs. Indeed, the TMs mobility increases in presence of naked nano-Fe3O4, suggesting associations where NOM stabilizes the nanoparticles and increase the nanoparticles and associated TMs mobility. This mechanism seems less possible with coated nano-Fe3O4 where MON blocks the coating adsorption sites and therefore the adsorption of metals
Tessier, Erwan. "Diagnostic de la contamination sédimentaire par les métaux/métalloïdes dans la rade de Toulon et mécanismes controlant leur mobilité." Thesis, Toulon, 2012. http://www.theses.fr/2012TOUL0003/document.
Повний текст джерелаThis study deals with the assessment of sediment contamination levels by trace metals in the Toulon bay, a semi-closed Mediterranean area submitted to heavy anthropogenic inputs. The sampling of interface cores in 52 points located in thewhole bay allowed establishing a precise mapping of the sedimentary characteristics and the metals/metalloids contents. The obtained results from the surface sediments revealed a significant contamination of the bay (especially for Cu, Hg, Pb and Zn), mainly in the most enclosed parts of the small bay. There, the levels may exceed by several orders of magnitude the limits concerning dredging operations defined by the French legislation. The observed contamination distribution clearly indicated an export from the small to the large bay (normally less exposed) probably governed by hydrodynamic processes, responsible for the contaminated sediment resuspension. The sedimentary profiles of interface cores sampled in contrasted contamination areas revealed the presence of systematic contamination peaks in the first 20 cm. Taking into account the calculated sedimentation rate, this would demonstrate that the Toulon bay was submitted to a strong multi-contamination, probably linked to the 2nd world war. The analysis of interstitial waters (physico-chemical parameters,major, trace metals, and diagenetic tracers) allowed studying trace metals mobility. The obtained profiles appeared mainly controlled by diagenetic mechanisms and showed the major role of the main carrier phases present in the sediments (oxyhydroxides of Fe and Mn, sulphides). The modeling of these profiles led to the determination of the diffusive fluxes at the sediment/water interface, and so, to the action of the sediment as a sink or a source of contamination for the water column.The calculated outgoing diffusive fluxes appeared relatively low in comparison to the total contents measured in the sediment, proving that the main part of the studied trace metals remains in the sediment. Finally, resuspension experiments in lab and on field were performed with the aim to simulate different possible scenarios (storm,nautical traffic, dredging). Under the studied conditions, the remobilization can be low for some trace metals (e.g. As, Hg), but it may contrariwise be quite important for others (e.g. Cd, Cu, Pb) leading to a non-negligible contamination of the water column
Sinn, Julie A. ""I ain't no trick baby" or princess in disguise gender boundaries and female mobility in Freeway, Snow White : a tale of terror, and Ever after : a Cinderella story /." [Gainesville, Fla.] : University of Florida, 2001. http://purl.fcla.edu/fcla/etd/UFE0000353.
Повний текст джерелаDubrous, Vincent. "Simulation en santé chez les infirmiers de sapeurs-pompiers : trace de l'erreur et pérennité des apprentissages selon le degré de réflexivité mobilisé." Thesis, Aix-Marseille, 2020. http://www.theses.fr/2020AIXM0002.
Повний текст джерелаThis research focuses on nurses from fire brigades undergoing continuous training in the field of pre-hospital emergencies. The aim is to study the impacts of mistakes made during simulations and the sustainability of training, on the medium-term, depending on the degree of reflexivity gathered during debriefing, compared to the level without audio video instrumentation. The research method is mixed, quantitative and qualitative.The taxonomy of initial mistakes highlights mistakes in cognitive processing and non-technical mistakes, essentially in leadership, communication and organisation, which are consistent with literature. The influence of stress and emotions on the apprenticeship process is also listed. However, leadership reveals to be the main cause behind initial mistakes.The degree of reflexivity is correlated to the type of debriefing used, video footage proving to be the most efficient. Although the influence of filmed debriefing on the avoidance of initial mistakes is not statistically proven on the medium-term, qualitative analyses of corpora reveal the efficiency of simulation for the professionalisation of nurses working with emergencies and the limitation of repeated mistakes on the field. A link between training and permitted mistakes is observed during the debriefing period.Training is more fruitful in simulation rather than in real-life situations and the temporality of reflective processes is a favour from curriculum training. However, simulation can lead to mistakes due to posture confusion during role play.Highlighting the difficulty to take on a leader posture for a response team allows room for recommendations towards trainers
Varrault, Gilles. "Étude cinétique de l'extraction des métaux traces des sols : application à l'évaluation de l'efficacité de techniques de réhabilitation in situ." Paris 7, 2001. http://www.theses.fr/2001PA077156.
Повний текст джерелаPontoni, Ludovico. "Accumulation and colloidal mobilization of trace heavy metals in soil irrigated with treated wastewater." Thesis, Paris Est, 2016. http://www.theses.fr/2016PESC1144/document.
Повний текст джерелаReuse of treated wastewater for agricultural purposes is worldwide accepted and practiced to face water scarcity and save high quality resources. Although such practice has undoubtable advantages and is certainly more sustainable respect to the use of fresh water, it is not exempt from severe concerns related to the potential impact on the receiving soil and on the crops of potentially harmful pollutants contained in the reused water at trace levels. Among these pollutants, trace heavy metals (HMs) play a primary role due to their spread presence in the used water and to their persistence once released in the environment. The fate of HMs in the soils can be hardly predicted as mechanisms of mobility through soils are extremely diverse and related to highly complex simultaneous phenomena and chemical equilibria. HMs, in fact, as many other contaminants, are not only partitioned between the solid immobile and the water mobile phases. Indeed, colloids and nanoparticles act as a third mobile phase, with their own rheological properties and velocity. This latter aspect has been one of the main focus of the thesis. In details the thesis describes the results of several experiments conducted irrigating the OECD standard soil with real and/or synthetic wastewater, containing HMs in trace. For each test a specific soil (e.g. varying the organic matter content) and wastewater composition (e.g. varying the metals concentration, the salinity, the organic matter content, or testing real treated wastewaters) has been chosen in order to evaluate the effects of different conditions on the overall HMs fate. The increase of soil organic matter from 2,5 to 10% linearly enhanced the mobility of Cd, Cu and Ni up to a maximum mobility increase of 35.6, 43.7 and 49.19 % for Cd, Cu and Ni, respectively. In most experiments metals accumulated in the top soil layer (0.5 - 1 cm). Nevertheless peaks of contamination were detected at different depths in the soil deeper layers and at different leaching time in the leachates depending on the metal and on the soil and wastewater characteristics. Peaks of metals in the leachate appeared simultaneously with release of organic matter and/or release of silicates, demonstrating outstanding involvement of colloids in metals transport. Sodium concentration (20mM) decidedly reduced colloidal mobilization whereas more than 95 % of the influent metal was detected in the top layer despite the soil organic matter content. Salinity displayed different effects. The irrigation with real treated wastewater with quite high content of Ca and Mg (111 and 134 mg/L, respectively) resulted in higher average release of silicon from the soil inorganic matrix (8.2 mg/L) compared to the low salinity artificial wastewater (1.9 mg/L). Consequently higher mobilization of Cd, Cu, Ni and Zn was observed when the soil was irrigated with real treated wastewater. An advanced spectroscopical characterization of the leachates was performed to identify such colloidal aggregates. The observation of 3D excitation-emission matrix demonstrated in all the leachates samples the presence of fulvic (230-450 nm ex-em fluorescence area) and humic (330-445 nm ex-em) substances. In this context, a novel analytical method was developed to quantify phenolic substances in soil matrices allowing the monitoring of humic matter migration in soil profiles. The novel method was more accurate and more precise respect to the traditional one, allowing to obtain higher recovery of total phenols in peat soil (15.5 % increase) with a decrease of the coefficient of variation (30.1% decrease). Organic water soluble colloids were extracted from the peat used to prepare the OECD standard soil and characterized. Results of size exclusion chromatography highlighted the supramolecular structure of the extracted organic matter. Such structure was further confirmed through fluorescence and 1H-NMR spectroscopy
Amiot, Nicolas. "Design of simulation platform joigning site specific radio propagation and human mobility for localization applications." Phd thesis, Université Rennes 1, 2013. http://tel.archives-ouvertes.fr/tel-00971809.
Повний текст джерелаSivry, Yann. "Utilisation des isotopes stables de Cd, Zn, Cu, Ni et Pb pour quantifier le compartiment échangeable des éléments trace métalliques et de δ66Zn pour tracer les contaminations polymétalliques". Phd thesis, Université Paul Sabatier - Toulouse III, 2008. http://tel.archives-ouvertes.fr/tel-00375351.
Повний текст джерелаAkinyemi, Segun Ajayi. "Geochemical and mineralogical evaluation of toxic contaminants mobility in weathered coal fly ash: as a case study, Tutuka dump site, South Africa." Thesis, University of the Western Cape, 2011. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_1226_1360593017.
Повний текст джерелаThe management and disposal of huge volumes of coal combustion by products such as fly ash has constituted a major challenge to the environment. In most cases due to the inadequate alternative use of coal fly ash, the discarded waste is stored in holding ponds, slag heaps, or stock piled in ash dumps. This practice has raised concerns on the prospect of inorganic metals release to the surface and groundwater in the vicinity of the ash dump. Acceptable scientific studies are lacking to determine the best ash disposal practices. Moreover, knowledge about the mobility patterns of inorganic species as a function of mineralogical association or pH susceptibility of the dry disposed ash dump under natural weathering conditions are scarce in the literature. Fundamental understanding of chemical interactions of dry disposed ash with ingressed CO2 from atmosphere, percolating rain water and brine irrigation within ash disposal sites were seen as key areas requiring investigation. The mineralogical association of inorganic species in the dry disposed ash cores can be identified and quantified. This would provide a basis for understanding of chemical weathering, mineralogical transformations or mobility patterns of these inorganic species in the dry ash disposal scenario. The current study therefore aims to provide a comprehensive characterisation of weathered dry disposed ash cores, to reveal mobility patterns of chemical species as a function of depth and age of ash, with a view to assessing the potential environmental impacts. Fifty-nine samples were taken from 3 drilled cores obtained respectively from the 1 year, 8 year and 20-year-old sections of sequentially dumped, 
weathered, dry disposed ash in an ash dump site at Tutuka - a South African coal burning power station. The core samples were characterized using standard analytical procedures viz: X-ray fluorescence (XRF), X-ray diffraction (XRD), Fourier transforms infrared (FTIR) techniques, Scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS) and Acid neutralisation capacity (ANC) test. A modified sequential extraction (SE) method was used in this study. The chemical partitioning, mobility and weathering patterns in 1 year, 8 year and 20-year-old sections of the ash dump were respectively investigated using this modified sequential extraction scheme. The sequence of the extractions was as follows: (1) water soluble, (2) exchangeable, (3) carbonate, (4) iron and manganese and (5) residual. The results obtained from the 5 steps sequential extraction scheme were validated with the total metal content of the original sample using mass balance method. The distribution of major and trace elements in the different liquid fractions obtained after each step of sequential extraction of the 59 drilled core samples was determined by inductively coupled plasma mass spectrometry (ICPMS). The data generated for various ash core samples were explored for the systematic analysis of mineralogical transformation and change in ash chemistry with ageing of the ash. Furthermore, the data was analyzed to reveal the impact of ingressed CO2 from atmosphere, infiltrating rain water and brine irrigation on the chemistry of ash core samples. Major mineral phases in original ash core samples prior to extraction are quartz (SiO2) and mullite (3Al2O3·
2SiO2). Other minor mineral phases identified were hematite (Fe2O3), calcite (CaCO3), lime (CaO), anorthite (CaAl2Si2O8), mica (Ca (Mg, Al)3 (Al3Si) O10 (OH)2), and enstatite (Mg2Si2O6). X-ray diffraction results show significant loss of crystallinity in the older ash cores. The presence of minor phases of calcite and mica in dry disposed ash cores are attributed to reduction in the pore water pH due to hydration, carbonation and pozzolanic reactions. The X-ray diffraction technique was unable to detect Fe-oxyhydroxide phase and morealuminosilicate phases in ash core samples due to their low abundance and amorphous character. X-ray fluorescence results of the original ash core samples showed the presence of major oxides, such as SiO2, Al2O3, Fe2O3, while CaO, K2O, TiO2, Na2O, MnO, MgO, P2O5, and SO3 occur in minor concentrations. The ratio of SiO2/Al2O3 classified the original core samples prior to extraction as a silico-aluminate class F fly ash. The ternary plot of major elements in 1-year-old ash core samples was both sialic and ferrocalsialic but 8 year and 20-year-old ash core samples were sialic in chemical composition. It is noteworthy that the mass % of SiO2 varies through the depth of the core with an increase of nearly 3 %, to 58 mass % of SiO2 at a depth of 6 m in the 1-year-old core whereas in the case of the 8-year-old core a 2 % increase of SiO2 to a level of 57.5 mass % can be observed at levels between 4-8 m, showing dissolution of major components in the matrix of older ash cores.. The Na2O content of the Tutuka ash cores was low and varied between 0.6-1.1 mass % for 1-year-old ash cores to around 0.6-0.8 mass % for 8-year-old ash cores. Sodium levels were higher in 1-year-old ash cores compared to 8 year and 20-year-old ashcores. Observed trends indicate that quick weathering of the ash (within a year) leached out Na+ from the ash dump. No evidence of Na+ encapsulation even though the ash dump was brine irrigated. Thus the dry disposal ash placement method does not result in a sustainable salt sink for Na-containing species over time. The total content of each of the elements in 1 year and 20-year-old ash cores was normalised with their total content in fresh ash from same power station to show enrichment and depletion factor. Major elements such as K+, Mn showed enrichment in 1-year-old ash cores whereas Al, Si, Na+, Ti, Ca, Mg, S and Fe showed depletion due to over time erosion. Trace elements such as Cr, Sr, P, Ba, Pb, V and Zn showed enrichment but Ni, Y, Zr showed depletion attributed to over time erosion. In 20-year-old ash cores, major elements such as Al, Na+ and Mn showed enrichment while Si, K+, Fe, Mg and Ca showed depletion highlighting their mobility. Trends indicated intensive flushing of major soluble components such as buffering constituents (CaO) by percolating rain water. The 1-year-old and 20-year-old coal ash cores showed a lower pH and greater loss/depletion of the soluble buffering constituents than the 2-week-old placed ash, indicating significant chemical weathering within a year. Based 
on ANC results the leaching behaviours of Ca, Mg, Na+, K+, Se, Cr, and Sr were found to be controlled by the pH of the leachant indicating high mobility of major soluble species in the ash cores when in contact with slightly acid rain water. Other investigated toxic metals such as As, Mo and Pb showed amphoteric behaviour with respect to the pH of the leachant. Chemical alterations and formation of transient minor secondary mineral phases was found to have a significant effect on the acid susceptibility and depletion pattern of chemical species in the core ash samples when compared to fresh ash. These ANC results correlated well with the data generated from the sequential extraction scheme. Based on sequential extraction results elements, showed noticeable mobility in the water soluble, exchangeable and carbonate fractions due to adsorption and desorption caused by variations in the pore water pH. In contrast, slight mobility of elements in the Fe and Mn, and residual fractions of dry disposed fly ashes are attributed to the co-precipitation and dissolution of minor amount of less soluble secondary phase overtime. The 1-year-old dry disposed ash cores were the least weathered among the 3 drilled ash cores. Therefore low concentration of toxic metals in older ash cores were ascribed to extensive weathering with slower release from residual mineral phases over time. Elements were found to associate with different mineral phases depending on the age or depth of the core samples showing greater heterogeneity in dispersion. For instance the average amount of total calcium in different mineral associations of 1-year-old ash cores is as follows
water soluble (10.2 %), exchangeable (37.04 %), carbonate (37.9 %), Fe and Mn (7.1 %) and residual (2.97 %). The amount of total Na+ in different mineral phases of 1-year-old ash cores followed this trend: water soluble (21 %), exchangeable (11.26 %), carbonate (2.6 %), Fe and Mn (4.7 %) and residual (53.9 %). The non-leachable portion of the total Na+ content (namely that contained in the residual fraction) in the 1-year-old ash core samples under conditions found in nature ranged between 5-91 %. This non-leachable portion of the Na+ showed the metastability of the mineral phases with which residual Na+ associates. Results showed older ash cores are enriched in toxic elements. Toxic elements such as As, B, Cr, Mo and Pb are enriched in the residual fraction of older ash cores. For instance As concentration in the residual fraction varied between 0.0003- 0.00043 mg kg-1 for 1-year-old ash cores to around 0.0003-0.0015 mg kg-1 for 20-year-old ash cores. This suggests that the older ash is enriched in toxic elements hence dust from the ash dump would be toxic to human health. The knowledge of mobility and ecotoxicological significance of coal fly ash is needed when considering its disposal or reuse in the environment. The mobility and ecotoxicology of inorganic metals in coal fly ash are determined by (i) mineralogical associations of inorganic species (ii) in-homogeneity in the ash dumps (iii) long and short term exposure to ingress CO2 and percolating rain water. Management issues such as inconsistent placement of ash in the dumps, poor choice of ash dump site, in-homogeneity in brine irrigation, no record of salt load put on the ash dumps and lack of proper monitoring requires improvement. The thesis provides justification for the use of the modified sequential extraction scheme as a predictive tool and could be employed in a similar research work. This thesis also proved that the dry ash disposal method was not environmental friendly in terms of overall leaching potential after significant chemical weathering. Moreover the study proved that the practice of brine co-disposal or irrigation on ash dumps is not sustainable as the ash dump did not act as a salt sink.
Sivry, Yann. "Utilisation des isotopes stables de Cd, Zn, Cu, Ni et Pb pour quantifier le compartiment échangeable des éléments trace métalliques et de delta66Zn pour tracer les pollutions polymétalliques." Toulouse 3, 2008. http://thesesups.ups-tlse.fr/471/.
Повний текст джерелаA multi-elementary spiking method has been is developpeddeveloped in order to simultaneously quantify and caracterizecharacterize simultaneously the labile pools fraction of Cd, Zn, Ni, Cu and Pb in contaminated soils. This method is has been validated by comparison with 1) radioactive Cd spiking data,g Cd and of2) chemical extractions results. In additionFurthermore, an integrated study of Zn isotopic signatures (d66Zn) in various compartments pools of two contaminated ecosystems (zinc smelting sites of Viviez-Decazeville, S. -W. Of France and of Kempen, N. -E of Belgium) has been performed allowing the identification of various allows to assume a coherent scheme of Zn isotopic fractionations during associated to the metallurgical processes. The differents d66Zn ratio observed in between "enriched" and "residual" zinc would be a powerfull tool to identify the metallurgical contaminations origins. These results demonstrate the efficiency of stable isotopes as tracers for contamination processes and sourcescontaminations tracers
Testiati, Eti. "Contamination de sols par des éléments traces métalliques en zone méditerranéenne côtière : études de leur mobilité et du transfert à la phytocénose." Thesis, Aix-Marseille, 2012. http://www.theses.fr/2012AIXM4804/document.
Повний текст джерелаThe overall objective of this thesis was to contribute to the assessment of the level of contamination by trace metals and metalloids (TMM) on the site of Escalette (a former lead smelter in southeastern Marseille). The study of TMM transfer and transport processes on this site, taking into account their mobility in the soil and their transfer to plants, was a specific objective. The mapping of TMM contamination in an extended area around the factory site (on Calanques zone) has clearly highlighted the impact of the former industry. So, on the Escalette site, forms and levels of soil contamination differ from one area to another. Soils formed on the surface of the slag deposits are characterized by high levels of Cu, Zn and Pb, whose mobilizable fractions are significant (2-30%), showing a clear influence of slag. Soils collected near a chimney creeping uphill the slope, present the highest contamination levels in Pb, Sb and As, with from 10 to 30 % of mobilizable fractions. This contamination is linked to emissions through the damaged chimney but also to the degradation of this latter. The potential release of As and Sb from the soils of these two areas requires that these soils must be disposed of in landfills for hazardous wastes and their solubilization in acid medium have highlighted the health risks by ingestion for Pb and As. On areas in near periphery of the smelter, soils are less affected but must be still considered heavily contaminated. G. alypum and R. officinalis were observed on the site. They are tolerant and can accumulate TMM. Concentrations in roots were significantly correlated with the concentrations in soils, except for Cu
Drapeau, Clémentine. "Mesure et modélisation de la mobilité et de la spéciation des éléments majeurs et traces métalliques au sein de matrices complexes polluées en fonction du pH : application aux sédiments urbains et déchets miniers." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSET007/document.
Повний текст джерелаUrban sediments and mine tailings constitute two potential sources of pollution for the environment, especially surface water or groundwater. The chemical alteration of these solid matrices by contact with a source of acidity or alkalinity via air or water is likely to result in the dissolution of the mineral and organic phases and to induce the mobilization of majors and trace elements. These mechanisms are still poorly described and modeled for this type of very complex matrices. This thesis investigates potential for the mobilization of major and trace metals elements of various contaminated complex matrices, including an urban infiltration basin sediment and two carbonated and non-carbonated mining waste (for the study of contaminated acid mining drainage and contaminated neutral drainage). Besides, pure minerals were used to simulate phase mixture at the laboratory and identify the crossed mechanisms involved in contaminated acid and neutral mine drainage. All these matrices were subjected to acid-base neutralization capacity tests (solids put into contact with a source of protons or alkalinity), with monitoring of the pH (buffer capacity), the conductivity and the elemental release (major and trace metal elements). Experimental data were modeled with the PHREEQC geochemical speciation software. The combination of experimental and modeling approaches, which had very rarely been developed on such complex solid matrices, allowed the identification of (i) the dissolution reactions of the constitutive phases of the polluted matrices with the sorption reactions involved in the mobilization of their major and trace metal elements, (ii) the speciation of the major and trace metal elements in these matrices and in solution in equilibrium with the solid phases. This thesis, therefore, leads to a robust, precise and replicable methodology allowing a fine characterization of liquid and solid phase speciation of metallic pollutants in contaminated matrices. This methodology constitutes a crucial basis for understanding and predicting the evolution of contaminated solids (urban sediments and mining waste) according to different management methods: decontamination, recovery, and recycling
Merrot, Pauline. "Géochimie, spéciation et mobilité des éléments traces métalliques (Fe, Ni, Cr et Mn) au sein des sédiments du lagon de Nouvelle-Calédonie." Electronic Thesis or Diss., Sorbonne université, 2019. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2019SORUS551.pdf.
Повний текст джерелаNew Caledonia is covered on 33% of ultramafic rocks enriched in trace metals elements (Fe, Ni, Cr, Mn and Co). The erosion of these massifs represents an important source of these trace metals towards the lagoon, partially registered on the World List Heritage by UNESCO for its biodiversity. Understanding the geochemical cycle of these toxic trace metals is essential to evaluate the potential impacts on the biodiversity of this ecosystem. X-ray absorption spectroscopy (XAS) has shown that the contribution of iron sulfides is low, Ni and Fe are bearing by goethite and clays. These latter minerals representing the major phase for the Fe and Ni speciation were identified as chrysotile and green clays: a smectite (nontronite), a mica (glauconite) and a serpentine like a greenalite/berthierine. The clay minerals cycle and the green clay plays a major role in the Fe and Ni cycle, but also in Mn and to a lesser extent in the Cr cycles. The Mn speciation is shared by the clay minerals and the carbonates species whereas Cr is bearing by goethite and chromite inherited of laterite and in lesser extent by clay minerals. Cr is totally present under the reduced form which is the less toxic form. This absence of Cr(VI) is linked to the absence of Mn oxides in sediments avoiding the oxidation of Cr(III) to Cr(VI) and thus limits the impact on the environment. Finally, the chemical extractions of these metals show a relatively low bioavailability of trace metals except for Mn implying an effective long-term trapping for trace metals and thus limiting the environmental impacts even if the concentrations extracted are not negligible and can be threaten the biodiversity of the lagoon
Schramm, Kenneth Edward. "The medium tactical vehicle replacement program-an analysis of a multi-service office." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Jun%5FSchramm.pdf.
Повний текст джерелаLi, Yi. "Dual Mobile Robot: Adaptable Mobility System." Thesis, 2012. http://hdl.handle.net/1807/65481.
Повний текст джерелаPereira, Inês Correia. "How much data is enough to track tourists? The tradeoff between data granularity and storage costs." Master's thesis, 2020. http://hdl.handle.net/10362/106282.
Повний текст джерелаIn the increasingly technology-dependent world, data is one of the key strategic resources for organizations. Often, the challenge that many decision-makers face is to determine which data and how much to collect, and what needs to be kept in their data storage. The challenge is to preserve enough information to inform decisions but doing so without overly high costs of storage and data processing cost. In this thesis, this challenge is studied in the context of a collection of mobile signaling data for studying tourists’ behavioral patterns. Given the number of mobile phones in use, and frequency of their interaction with network infrastructure and location reporting, mobile data sets represent a rich source of information for mobility studies. The objective of this research is to analyze to what extent can individual trajectories be reconstructed if only a fraction of the original location data is preserved, providing insights about the tradeoff between the volume of data available and the accuracy of reconstructed paths. To achieve this, a signaling data of 277,093 anonymized foreign travelers is sampled with different sampling rates, and the full trajectories are reconstructed, using the last seen, linear, and cubic interpolations completion methods. The results of the comparison are discussed from the perspective of data management and implications on the research, especially the results of research with lower time-density mobile phone data.
Noack, Angela Gai. "Mobility of colloids in soils / by Angela Gai Noack." 2002. http://hdl.handle.net/2440/21934.
Повний текст джерелаIncludes bibliographical references (leaves 258-275)
xxi, 275 leaves, [8 p.] : ill. (some col.), plates (col.) ; 30 cm.
Title page, contents and abstract only. The complete thesis in print form is available from the University Library.
Thesis (Ph.D.)--University of Adelaide, School of Earth and Environmental Sciences, 2003
Noack, Angela Gai. "Mobility of colloids in soils / by Angela Gai Noack." Thesis, 2002. http://hdl.handle.net/2440/21934.
Повний текст джерелаIncludes bibliographical references (leaves 258-275)
xxi, 275 leaves, [8 p.] : ill. (some col.), plates (col.) ; 30 cm.
Thesis (Ph.D.)--University of Adelaide, School of Earth and Environmental Sciences, 2003