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Dissertations / Theses on the topic 'Greek site'
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Doutsou, Ioanna. "Ethnicity mediated : identity practices of Greek diaspora on a social network site." Thesis, King's College London (University of London), 2013. https://kclpure.kcl.ac.uk/portal/en/theses/ethnicity-mediated-identity-practices-of-greek-diaspora-on-a-social-network-site(dbf56ca5-2043-4fe3-8b8d-ae80f54471f3).html.
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This study focuses on the processes by which new media practices may result in redefining ethnic belonging for diasporic populations. Similarly to other social media, the social network site of Facebook mediates the diasporic experience of Greeks in London. The thesis's methodological choices are aimed at addressing the challenges and potentials that social networking applications have created for practice-based ethnographic research as well as for the study of identity and diaspora. With an aim to describe how a set of participants –Greeks in London– practice their ethnicity and move between online and offline sites, countries, cultures and languages, I triangulate qualitative and quantitative data which emerge from various online and offline locations such as interviews, questionnaires, screen observation and fieldwork. Following the tradition of online ethnography, I examine ethnospecific content shared on the Profile and Group pages, identify the resources which the participants draw upon to articulate their ethnic identity and I investigate the beliefs and attitudes related to their online practices. Along with expressions of banal nationalism, the study points to a range of creative and innovative online practices of hybridization which contest stereotypical notions of Greek ethnicity, create a new identity for ‗place‘ and ‗home‘ and expand the resources from which ethnic identity can be imagined. In a wealth of textual evidence, emerging from the Status Updates and Wall posts, participants celebrate their transnational mobility, report on their experience of homeland in real time, participate in Groups for Greek diaspora and build networks of practice to engage with life in London. The analysis reveals the existence of an online space which facilitates transnational identities and challenges discourses of ethnicity and diaspora.
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Tzakou, Anna. "Geopoetics : a mindfulness (sati) site-specific performance practice." Thesis, University of Exeter, 2016. http://hdl.handle.net/10871/30598.
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In autumn of 2010 the phenomenon of ‘Greek crisis’ was aggressively developed to a new experience of Greece. As a theatre practitioner from Athens, the specific historical time pushed me to question big-scale narratives of identity, home and belonging-ness. I relocated my training outdoors. My aim was to create a site-specific performance process that investigates place as a psychophysical experience and the ways through which it integrates with the cultural practices embedded in situ. The thesis builds around a Geographical/Buddhist framework where a cultural landscape epistemology outlined by Mitch Rose and John Wylie (2006) is realised through the practice of samatha vipashyana. The accounts of Rose and Wylie organise the examination of space as a body-landscape interrelationship. The Buddhist notion of mindfulness (sati) structures the investigation of the experience in space through theatre and dance disciplines in situ. The Buddhist concept of selflessness (anatta) permeates the performance practice in situ as a discipline of presence. Designated as Geopoetics, the practice of thesis applies meditation practices of breathing and walking to explore site through movement, feeling and activity. It further extends such a process via the disciplines of Somatics, Grotowski-based actor training and Dilley’s ‘dance.art.lab’. It employs the notions of ‘story’ from the Six Viewpoints system and ‘living myth’ of Anna Halprin to formulate a devising process of site-specific performance as an enactment of interrelationship between subject(s) and space. Geopoetics creates experiential containers within which the participant/ watcher is enabled to contemplate and re-examine her political, perceptual and emotional present. Based on its methodology of mindfulness (sati) notions of ‘identity’, ‘home’ and ‘sense of belonging’ are seen as individual or collective modes of attachment which altogether co-formulate the event of landscape. The practice of Geopoetics suggests an inquiry of place through the body for site-specific devisers and performers. It also relates to the discipline of architects, geographers and planners as a practice which investigates space’s contextual paradoxes and dynamics through the body.
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Luke, Joanna. "Ports of trade, Al Mina and geometric Greek pottery in the Levant /." Oxford : Archaeopress, 2003. http://catalogue.bnf.fr/ark:/12148/cb39135006p.
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Tokmak, Musa. "Earthquakes And Ancient Site Selection In West Anatolia." Phd thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614292/index.pdf.
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This study investigates the relationship between the ancient settlements in west
Anatolia and physical, environmental parameters including topography, rock and
morphological classes. Modern settlements are also included in the study to
analyze if the response has changed to these parameters from past to the present.
The databases created in the study include three topographic attributes (elevation,
slope and aspect), rock type, ancient settlements and modern settlements. Analyses
performed in the study involve distance and density analyses, morphological
analysisdistribution within the rock types both for ancient and modern settlements. The results of the study demonstrated that 1) the active faults produced attractive topography to settle, 2) people preferred the vicinity of the fault line as settlement location, and 3) they were not aware of the earthquake potential of their location. Therefore, because of the advantage of the location they did not consider to change the place as indicated by rebuilding their settlement repeatedly at the same place after it is damaged.
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Gorogianni, Eugenia. "Creation Stories: The Archaeological Site Of Ayia Irini, Kea, And The Production Of Archaeological Knowledge." Cincinnati, Ohio : University of Cincinnati, 2008. http://rave.ohiolink.edu/etdc/view.cgi?acc_num=ucin1227155046.
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Thesis (Ph.D.)--University of Cincinnati, 2008.Advisor: Jack L. Davis (Advisor), Kathleen M. Lynch (Committee Member), Gisela Walberg (Committee Member). Title from electronic thesis title page (viewed Feb. 4, 2009). Keywords: Ayia Irini; archaeological practice; archaeological knowledge; Kea; Bronze Age; Greek archaeology; Cyclades. Includes abstract. Includes bibliographical references.
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Papaioannou, Theodoros. "Narcisse, une création de Prométhée : l'impact libérateur et anesthésiant d’internet sur la nouvelle génération grecque." Thesis, Montpellier 3, 2017. http://www.theses.fr/2017MON30057/document.
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De l’homme prométhéen à l’homme narcissique, il n’y a qu’un pas: la technologie. Beaucoup de choses changent chaque fois qu’une nouvelle technologie entre dans nos vies.Cette thèse s’efforce de comprendre comment les membres d’une société donnée (en l’occurrence la Grèce) appréhendent le média technologique de notre époque, sur un plan pratique et théorique, et comment ils sont ensuite influencés, voire transformés par la manière dont ils l’utilisent. Grâce à une enquête qualitative menée d’abord sous forme de questionnaire, nous avons tenté de déterminer comment ils utilisent ces médias pour répondre aux besoins fondamentaux de leur vie sociale tels que l’information et la communication, de quelle façon ils l’utilisent et pourquoi et comment ce dernier les impacte.De par sa nature même, internet est le média qui oblige l’homme à s’étendre au-delà de ses propres limites corporelles, projetant, pour ainsi dire, son système nerveux central sur le média. En plus, Facebook donne l’occasion à chaque utilisateur de projeter un profil créé par lui-même et d’exister à travers ce monde qui est le sien.L’Homme qui regarde l’écran numérique est une version contemporaine de Narcisse. Une fois de plus, il s’étend avec détermination, se mutile et se conforme à la nouvelle perception sensorielle. L'ordinateur connecté à Internet est le média technologique par excellence dont l'utilisation provoque ces changements. La présente recherche se flatte d’avoir contribué, à son modeste niveau, à la sociologie de nos contemporains confrontés à l’ère numériqueFrom the promethean man to Narcissus there is only a small step: technology. A lot of things change every time a new technology enters our lives.This thesis attempts to comprehend the way the new Greek generation makes use of the new cyber technology and how modern Greek people are influenced as well as transformed by this use. By means of a qualitative survey in the form of questionnaires administered to young people we attempted to explore how they use these media to satisfy basic needs of their social life such as information and communication, how they perceive their relation with the media and how they are influenced by them.By nature, internet is the medium which helps the individual to overcome his corporal limits extending parts of his nervous system to the medium. Moreover, Facebook gives the opportunity to each one of its users to project a profile created by himself and live within it. The user who watches the screen appears to be a contemporary version of Narcissus once again complying with new sensory perceptions. The computer connected to the internet is the major medium that causes these modifications.That’s what Prometheus did. His invention gave birth to a new human era. What becomes the principal objective in our day and age is without any doubt to move from the condition of pathetic Narcissus to the condition of the artful navigator in the virtual ocean. The present research has hopefully contributed to some extent to the social research related to the contemporary virtual era
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Colonge, Victor. "Le rôle des grands sanctuaires dans la vie internationale en Grèce aux Ve et IVe siècles av. J.-C." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSEN096/document.
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Malgré leurs divisions politiques, les Grecs reconnaissaient l’existence de sanctuaires qui leur étaient communs. Or, à côté de leurs fonctions religieuses, ces grands sanctuaires jouèrent aussi un rôle indéniable dans la politique internationale aux Ve et IVe siècles avant notre ère. En effet, les quatre plus grands, les sanctuaires de Delphes, de l’Isthme, de Némée et d’Olympie, organisaient des concours panhelléniques et recevaient des offrandes venues de tout le monde grec. Certes, les sanctuaires communs pouvaient aussi rassembler tout ou partie des Hellènes, dans le cadre de koina ou d’alliances militaires, mais ils étaient avant tout des lieux de mise en scène des rivalités entre les États grecs. C’est pourquoi ceux-ci cherchèrent à exercer un contrôle plus ou moins direct sur eux. Ainsi, lorsque le caractère commun du lieu sacré s’était traduit par la mise en place d’institutions, celles-ci pouvaient voir s’exprimer des rapports de force entre les différents membres. Surtout, en particulier dans le cas des sanctuaires se situant sur des confins, la volonté de maîtriser des sanctuaires communs pouvait donner lieu à des conflits mêlant politique et religion, le contrôle d’un sanctuaire étant alors la clé de l’hégémonie sur la région dont il était le centre cultuel. Néanmoins, les grands sanctuaires ne furent pas que des enjeux entre puissances : les oracles et les familles sacerdotales qui y étaient responsables du culte pouvaient incontestablement prendre position dans les luttes pour l’hégémonie en Grèce. De plus, ces sanctuaires pouvaient parfois servir d’interfaces entre la civilisation hellénique et les cultures voisines (Perses, Étrusques, Libyens…)Despite their political divisions, Greeks knew the existence of sanctuaries who were common to them. However, in addition to their religious functions, these great sanctuaries played too an undeniable in international policy in the 5th and 4th centuries BC. The four greatest sanctuaries (Delphi, Isthmia, Nemea and Olympia) organized panhellenic games and received consecrations from all the Greek world. Moreover, common sanctuaries could gather all the Hellenes or a part of them in koina or military alliances, but they were above all places for rivalries between Greek states. That is why these tried to control them more or less directly. Thus, when the common characteristics of the sacred place had resulted in specific institutions, these could be the scene of conflicts between different protagonists. Above all, particularly with sanctuaries on the borders, the will of control of great sanctuaries coul result in both political and religious wars. The control of a sanctuary was then the key of the hegemony on the country of which it was the religious center. Nevertheless, great sanctuaries were not only stakes between powers: oracles and priestly families who were in charge of the temple could unquestionably intervene in struggles for hegemony in Greece. Moreover, these sanctuaries could sometimes be places of contact between Hellenic civilization and neighbouring cultures (Persians, Etruscans, Libyans, etc.)
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Peterson, Nicole L. Srebric Jelena. "On-site performance of extensive green roofs." [University Park, Pa.] : Pennsylvania State University, 2009. http://honors.libraries.psu.edu/theses/approved/WorldWideIndex/EHT-23/index.html.
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McCarty, Erin G. "Green Belt Planning in Edinburgh and Baltimore: A Cross-site Comparison." Ohio : Ohio University, 2007. http://www.ohiolink.edu/etd/view.cgi?ohiou1180532632.
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Screpanti, Giovanni. "Hybrid Power System for Green Telecom Sites." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-302516.
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Solar Photovoltaic can offer a clean and cheap alternative to the Diesel Generator for telecom sites that are in remote locations with no grid coverage or where the grid is not fully reliable. Ericsson Enclosure & Power is looking into the opportunity to integrate this technology, together with battery storage, into their network sites around the globe, in view of a constantly growing network demand and the diffusion of the 5G technology. One of the main upfront cost is the civil works for the PV structure foundations and the company is interested in lighter weight PV chemistries, such as CIGS. Besides, they also noted how the thin-film technology harvest light in a different way than the standard crystalline silicon, which would represent an additional benefit of replacing c-Si with CIGS for certain locations. The aim of this thesis work is to investigate into the effect that a different radiation spectrum has for several PV chemistries, mainly c-Si and CIGS, to improve the Excel model, already started by the group, with more accurate information and algorithm for all the components of a hybrid diesel-solar-battery power system, to develop a dispatch strategy among the different sources and analyse the best mix that increases the share of renewables and gives the lowest payback period. It was found that, when the spectral effects are included in the model, there is no significant difference between c-Si and CIGS and their comparison can be done simply in terms of efficiency values, cost per unit of watt peak and weight-to-power ratio, for cheaper types of structures. Besides, the best mix is found for both a grid-connected and an off-grid sites, where a combination of PV, batteries and genset or grid is used. Utilizing renewable energy only, would require a significant oversizing of the system to cover the annual load, making the investment unattractive for the cost and the land needed. A pure solar system could represent an opportunity for sites that can accept planned shutdowns for a small fraction of the year.Solar Photovoltaic kan erbjuda ett rent och billigt alternativ till dieselgeneratorn för telekom-sajter som ligger på avlägsna platser utan elnätstäckning eller där elnätet inte är helt tillförlitligt. Ericsson Enclosure & Power undersöker möjligheten att integrera denna teknik, tillsammans med batterilagring i sina nätverkssajter runt om i världen, och detta är en konsekvens av ständigt växande nätbehov och 5G -teknik distributionen. En av de främsta kostnaderna är arbetskraften för PV -grundstrukturen och därför företagen är intresserade av lättare PV - kemier, som CIGS. Dessutom, noterade företagen hur tunnfilmstekniken skördar ljus på ett annat sätt än det vanliga kristallina kislet, vilket skulle representera en ytterligare fördel med att ersätta c-Si med CIGS för vissa platser. Syftet med detta avhandlingsarbete är att undersöka vilken effekt ett annat strålningsspektrum har för flera PV-kemier, främst c-Si och CIGS, för att förbättra Excel-modellen. Ett arbete redan startats av gruppen, med mer exakt information och algoritm för alla komponenterna i ett hybrid diesel-sol-batteri kraftsystem, för att utveckla en utnyttjande strategi bland de olika källorna och analysera den bästa blandningen som ökar andelen förnybar energi och som ger den lägsta återbetalningsperioden. Det visade sig att när spektraleffekterna ingår i modellen då fanns det ingen signifikant skillnad mellan c-Si och CIGS. Jämförelsen mellan c-Si och CIGS kan göras baserat på effektivitetsvärden, kostnad per watt-peak-enhet och vikt-effektförhållande, för billigare typer av konstruktioner. Dessutom är den bästa mixen för både elnätanslutna och off-grid-platser, är en kombination av PV, batterier och generator eller elnät. Att bara använda förnybar energi skulle kräva en betydande överdimensionering av systemet för att täcka den årliga belastningen, vilket gör investeringen oattraktiv för kostnaden och marken som behövs. Ett rent solsystem kan vara en möjlighet för sajter som kan acceptera planerade elnätsavbrott under en liten bråkdel av året.
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Kampman, Niko. "Fluid-rock interactions in a carbon storage site analogue, Green River, Utah." Thesis, University of Cambridge, 2011. https://www.repository.cam.ac.uk/handle/1810/244506.
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Reactions between CO2-charged brines and reservoir minerals might either enhance the long-term storage of CO2 in geological reservoirs or facilitate leakage by corroding cap rocks and fault seals. Modelling the progress of such reactions is frustrated by uncertainties in the absolute mineral surface reaction rates and the significance of other rate limiting steps in natural systems. This study uses the chemical evolution of groundwater from the Jurassic Navajo Sandstone, part of a leaking natural accumulation of CO2 at Green River, Utah, in the Colorado Plateau, USA, to place constraints on the rates and potential controlling mechanisms of the mineral-fluid reactions,under elevated CO2 pressures, in a natural system. The progress of individual reactions, inferred from changes in groundwater chemistry is modelled using mass balance techniques. The mineral reactions are close to stoichiometric with plagioclase and K-feldspar dissolution largely balanced by precipitation of clay minerals and carbonate. Mineral modes, in conjunction with published surface area measurements and flow rates estimated from hydraulic head measurements, are then used to quantify the kinetics of feldspar dissolution. Maximum estimated dissolution rates for plagioclase and K-feldspar are 2x10-14 and 4x10-16 mol·m-2·s-1, respectively. Fluid ion-activity products are close to equilibrium (e.g. DGr for plagioclase between -2 and -10 kJ/mol) and lie in the region in which mineral surface reaction rates show a strong dependence on DGr. Local variation in DGr is attributed to the injection and disassociation of CO2 which initially depresses silicate mineral saturation in the fluid, promoting feldspar dissolution. With progressive flow through the aquifer, feldspar hydrolysis reactions consume H+ and liberate solutes to solution which increase mineral saturation in the fluid and rates slow as a consequence. The measured plagioclase dissolution rates at low DGr would be compatible with far-from-quilibrium rates of ~1x10-13 mol·m-2·s-1 as observed in some experimental studies. This suggests that the discrepancy between field and laboratory reaction rates may in part be explained by the differences in the thermodynamic state of natural and experimental fluids, with field-scale reactions occurring close to equilibrium whereas most laboratory experiments are run far-from-equilibrium. Surface carbonate deposits and cementation within the footwall of the local fault systems record multiple injections of CO2 into the Navajo Aquifer and leakage of CO2 from the site over ca. 400,000 years. The d18O, d13C and 87Sr/86Sr of these deposits record rapid rates of CO2 leakage (up to ~1000 tonnes/a) following injection of CO2, but rates differ by an order of magnitude between each fault, due to differences in the fault architecture. Elevated pCO2 enhances rates of feldspar dissolution in the host aquifer and carbonate precipitation in fracture conduits. Silicate mineral dissolution rates decline and carbonate precipitation rates increase as pH and the CO2 charge dissipate. The Sr/Ca of calcite cements record average precipitation rates of ~2x10-6 mol/m2/s, comparable to laboratory derived calcite precipitation rates in fluids with elevated Mn/Ca and Fe/Ca, at cc of ~1 to 3. This suggests that far-from-equilibrium carbonate precipitation, which blocks fracture conduits and causes the leaking system to self-seal, driven by CO2 degassing in the shallow subsurface, can be accurately modeled with laboratory derived rates. Sandstones altered in CO2 leakage conduits exhibit extensive dissolution of hematite grain coatings and are chemically bleached as a result. Measurements of Eh-pH conditions in the modern fluid, and modeling of paleo-Eh-pH conditions using calcite Fe and Mn concentrations, suggests that the CO2-charged groundwaters are reducing, due to their low dissolved O2 content and that pH suppression due to high pCO2 is capable of dissolving and transporting large concentrations of metals. Exhumed paleo-CO2 reservoirs along the crest of the Green River anticline have been identified using volatile hosting fluid inclusions. Paleo-CO2-charged fluids mobilized hydrocarbons and CH4 from deeper formations, enhancing the reductive dissolution of hematite, which produced spectacular km-scale bleached patterns in these sediment.
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Oosthuysen, Wessel Marthinus. "Redefining Maputo downtown : flood management through a sustainable landscape architecture intervention." Diss., University of Pretoria, 2011. http://hdl.handle.net/2263/23563.
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“All countries are vulnerable to climate change and instability in weather patterns but the poorest countries and the poorest people within them are most vulnerable, being the most exposed and having the least means to adapt” (IMF and World Bank Development Committee, 2006). African cities, as other cities around the world, are prone to flooding within in urban areas. The increased flooding from climate change, could have seriously destabilising effects for Africa (Commission for Africa, 2005). Climate records shows that most of Africa warmed by approximately 0.7°C during the twentieth century (IPCC Working Group II, 2001). Future changes in rainfall will depend greatly on the influence of global warming. In addition, a United Nations World Water Report states that in the beginning of the twenty-first century, the Earth with its diverse and abundant life forms (including over six billion humans), is facing a serious water crisis. Water needs to be conserved in any way possible. (United Nations World Water Report, n.d.). This study aims to explore the role in which floodingin urban landscapes can be addressed, but simultaneously stored for future use. It argues that the negative element of flooding can rather be used, i.e the water could be conserved and used in the build environment, rather than inhibiting social, economic and ecological factors. The pilot project in this stage can at the same time, serve as an urban generator. An innovative solution (urban water park) is analysed and tested and serves as a possible outcome to address flooding problems within an African city (Maputo, Mozambique). Afrika, 2005).Stede in Afrika, soos in ander in die wêreld, is onderhewe aan vloedrampe in stedelike areas. Die toenemende vloedegevalle, tesame met die impak van klimaatsverandering, kan uiterse destabilisering vir die Afrika kontinent inhou (Kommissie vir Afrika, 2005). ‘n Klimaatsrekord, bewys dat gedurende die twintigste eeu, ‘n groot deel van Afrika onderworpe was aan ‘n hittetoename van omtrent 0.7°C (IPPC Werksgroep II, 2011). Toekomstige veranderinge in reënval sal grootliks afhang van die invloed van aardsverwarming. Ter aanvoering van die argument word daar adisioneel toegevoeg dat die Verenigde Nasies se Wêreldswater Verslag die volgende aanlas: dat die aarde, met sy diverse en verskeidenheid van lewende wesens (wat oor die ses miljioen mense insluit), aan die begin van die een-en-twintigste eeu onderworpe sal wees aan ernstige watertekorte. Water moet dus in alle moontlike maniere gespaar word (Verenigde Nasies se Wêreldswater Verslag, geen datum). Die studie beoog om die rol van vloede in die verstedelike landskap te ondersoek en aan te spreek tot voordeel van die bouomgewing. Die ontwerp poog om die huidige negatiewe element van water eerder te bewaar en die gebruik daarvan te aan te moedig. Hierdeur word word die omswaai in sosiale, ekonomiese en ekologiese faktore inplekgestel. ‘n Projek sal dan terselfdertyd as verstedelike genereerder dien. ‘n Innoverende oplossing, ‘n stedelike water park, is geondersoek en getoets. Hierdie sal moontlik as die oplossing dien van die huidige vloedprobleme in hierdie Afrika stad (Maputo, Mosambiek).
Dissertation (ML(Prof))--University of Pretoria, 2011.
Architecture
unrestricted
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Andronis, Christos. "Site-directed mutagenesis of the D2 protein in the green alga 'Chlamydomonas reihardtii'." Thesis, Imperial College London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243328.
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HECK, GREGORY BRYAN. "THE LEED GUIDELINES: A FRAMEWORK FOR THE DEVELOPMENT OF GREEN BUILDINGS AND SITES." University of Cincinnati / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1060887850.
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Hughes, Jonathan. "Toward a Poetics of Green Building." University of Cincinnati / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1427981120.
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Boe, Brian Jeffrey Dickson Kenneth L. "Evaluating tree seedling survival and growth in a bottomland old-field site implications for ecological restoration /." [Denton, Tex.] : University of North Texas, 2007. http://digital.library.unt.edu/permalink/meta-dc-3998.
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Mankoff, Lawrie. "Radioactive Contamination, Superfund Remediation, and Green Gentrification in San Francisco’s Hunters Point." Scholarship @ Claremont, 2019. https://scholarship.claremont.edu/scripps_theses/1328.
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Bayview-Hunters Point, a neighborhood in southeastern San Francisco, has long been one of the most impoverished and polluted areas in the city. In an example of environmental racism, much of the African American community in San Francisco was segregated to Bayview-Hunters Point by racist housing policies and practices. This neighborhood was home to the Hunters Point Naval Shipyard (HPNS), which was widely polluted with hazardous wastes from shipyard operation as well as radioactive contamination from the Navy Radiological Defense Laboratory established on this property. The former HPNS was made a federal Superfund site in 1989 and has been in remediation by the Navy since, with the goal of eventual transfer of the land to the city of San Francisco for redevelopment into residential and commercial areas. Throughout the history of the HPNS, government agencies have obscured both radioactive contamination and the nearby disadvantaged community in pursuit of military and economic power. As a result, the forces of redevelopment have outpaced remediation in Hunters Point. In this thesis, I argue that in continuing the environmental racism marginalizes the community in Bayview-Hunters Point and working to hide the contamination at the nearby Superfund site government agencies, primarily the Navy and city government, have fostered the conditions for green gentrification to occur, which could have ill effects on both the longstanding community and new residents.
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Khaine, Djilali. "Etude théorique du comportement thermique d'un bâtiment par la théorie des fonctions de green." Valenciennes, 2000. https://ged.uphf.fr/nuxeo/site/esupversions/26a210f1-567f-4cd1-b60b-6467186eb263.
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Les études du comportement thermique dynamique des bâtiments sont actuellement basées sur des méthodes purement numériques. Nous présentons dans ce travail une méthode semi-analytique, basée sur la théorie des fonctions de green, tenant compte de toutes les interactions entre éléments de l'enveloppe par l'intermédiaire d'une fonction unique caractéristique de la structure solide. Le système d'équations obtenu est résolu numériquement, sans discrétisation spatiale, grâce à la mise au point d'un algorithme de calcul de produits de convolution et de résolution des équations intégrales du type volterra. Les résultats numériques obtenus sont validés par confrontation avec des méthodes purement analytiques.
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Digiacomo, Flavia [Verfasser], and T. [Akademischer Betreuer] Neumann. "Mobility and Reactivity of Sulfate Green Rust and Sulfidized Nanoscale Zerovalent Iron for In-Situ Remediation of Chromium Contaminated Sites / Flavia Digiacomo ; Betreuer: T. Neumann." Karlsruhe : KIT-Bibliothek, 2021. http://nbn-resolving.de/urn:nbn:de:101:1-2021091505003064178729.
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Abou, Leyla Najib. "Contrôle santé intégré passif par corrélation de champ acoustique ambiant : Application aux structures aéronautiques." Valenciennes, 2010. http://ged.univ-valenciennes.fr/nuxeo/site/esupversions/fa3a198c-8d6b-49e7-96ef-883d2c5a09e1.
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Le Contrôle Santé Intégré (CSI) est une technique d’inspection permettant de contrôler l’intégrité d’une structure mécanique d’une façon autonome et permanente au cours de son utilisation. Le travail présenté dans ce manuscrit est consacré à l’étude d’un CSI passif en domaine aéronautique, par corrélation du champ acoustique. En effet, des études récentes ont montré qu’il existe une relation entre la fonction de corrélation d’un champ diffus entre deux points, et la fonction de Green entre ces deux derniers. Le but est d’exploiter les vibrations mécaniques dans un avion pendant la phase de vol. Dans un premier temps, le potentiel de cette méthode est vérifié expérimentalement, et les problèmes et les difficultés dus à quelques imperfections d’application sont soulignés. Dans un deuxième temps, un outil de simulation est développé pour mieux comprendre certains phénomènes acoustiques, et une solution permettant de contourner le problème dû aux imperfections d’application (champ non diffus) est proposée et validée expérimentalement. Enfin, une optimisation de cette solution est faite avec une quantification de l’influence de certains paramètres. Dans ce but une approche théorique statistique est présentée et comparée à des résultats expérimentauxStructural Health Monitoring (SHM) is an autonomous and permanent technique for checking the integrity of a mechanical structure. The interest of is to inspect the integrity of the structure in near real time, which increases reliability, and avoiding immobilization of the aircraft during the inspection phase, and thus reduce maintenance cost. The work presented here is devoted to the study of a passive SHM in aeronautics using an ambient noise cross correlation. Indeed, recent studies have shown a relationship between the correlation function of a diffuse field between two points, and the Green’s function between them. The aim is to exploit the mechanical vibrations in an aircraft during the flight. In a first step, the potential of this method is verified experimentally, and the problems and difficulties due to some imperfections of application are outlined. In a second step, a simulation tool is developed to better understand certain acoustic phenomena, and a solution to solve the problem caused by the imperfections of the application (non-diffuse field) is proposed and validated experimentally. Finally, an optimization of this solution is made with a quantification of the influence of certain parameters. For this purpose a statistical theoretical approach is made and compared with experimental results
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Rivera, Brian. "Analysis of the Florida's Showcase Green Envirohome Water/Wastewater Systems and Development of a Cost-Benefit Green Roof Optimization Model." Master's thesis, University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2580.
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The Florida Showcase Green Envirohome (FSGE) incorporates many green technologies. FSGE is built to meet or exceed 12 green building guidelines and obtain 8 green building certificates. The two-story 3292 ft2 home is a "Near Zero-Loss Home", "Near Zero-Energy Home", "Near Zero-Runoff Home", and "Near Zero-Maintenance Home". It is spawned from the consumer-driven necessity to build a home resistant to hurricanes, tornadoes, floods, fire, mold, termites, impacts, and even earthquakes given up to 500% increase in insurance premiums in natural disaster zones, the dwindling flexibility and coverage of insurance policies, and rising energy, water and maintenance costs (FSGE 2008). The FSGE captures its stormwater runoff from the green roof, metal roof and wood decking area and routes it to the sustainable water cistern. Graywater from the home (after being disinfected using ozone) is also routed to the sustainable water cistern. This water stored in the sustainable water cistern is used for irrigation of the green roof, ground level landscape, and for toilet flushing water. This study was done in two phases. During phase one, only stormwater runoff from the green roof, metal roof and wood decking area is routed to the sustainable water cistern. Then, during phase two, the water from the graywater system is added to the sustainable water cistern. The sustainable water cistern quality is analyzed during both phases to determine if the water is acceptable for irrigation and also if it is suitable for use as toilet flushing water. The water quality of the sustainable cistern is acceptable for irrigation. The intent of the home is to not pollute the environment, so as much nutrients as possible should be removed from the wastewater before it is discharged into the groundwater. Thus, the FSGE design is to evaluate a new on-site sewage treatment and disposal (OSTD) system which consists of a sorption media labeled as Bold and GoldTM filtration media. The Bold and GoldTM filtration media is a mixture of tire crumb and other materials. This new OSTD system has sampling ports through the system to monitor the wastewater quality as it passes through. Also, the effluent wastewater quality is compared to that of a conventional system on the campus of the University of Central Florida. The cost-benefit optimization model focused on designing a residential home which incorporated a green roof, cistern and graywater systems. This model had two forms, the base model and the grey linear model. The base model used current average cost of construction of materials and installation. The grey model used an interval for the cost of construction materials and green roof energy savings. Both models included a probabilistic term to describe the rainfall amount. The cost and energy operation of a typical Florida home was used as a case study for these models. Also, some of the parameters of the model were varied to determine their effect on the results. The modeling showed that the FSGE 4500 gallon cistern design was cost effective in providing irrigation water. Also, the green roof area could have been smaller to be cost effective, because the green roof cost is relatively much higher than the cost of a regular roof.M.S.Env.E.
Department of Civil and Environmental Engineering
Engineering and Computer Science
Environmental Engr MSEnvE
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Boe, Brian Jeffrey. "Evaluating Tree Seedling Survival and Growth in a Bottomland Old-field Site: Implications for Ecological Restoration." Thesis, University of North Texas, 2007. https://digital.library.unt.edu/ark:/67531/metadc3998/.
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In order to assess the enhancement of seedling survival and growth during drought conditions, five-hundred bare-root seedlings each of Shumard oak (Quercus shumardii Buckl.) and green ash (Fraxinus pennsylvanica Marsh.) were planted each with four soil amendments at a Wildlife Management Area in Lewisville, Texas. The treatments were a mycorrhizal inoculant, mulch fabric, and two superabsorbent gels (TerraSorb® and DRiWATER®). Survival and growth measurements were assessed periodically for two years. Research was conducted on vegetation, soil, and site history for baseline data. Both superabsorbent gels gave significant results for Shumard oak survival, and one increased green ash diameter. For overall growth, significant results were found among DRiWATER®, mycorrhizae, and mulch treatments.
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Kavoura, Androniki. "State policy for the presentation of Greek National Heritage : the case of the Cultural World Heritage Sites." Thesis, University of Stirling, 2001. http://hdl.handle.net/1893/1804.
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The thesis focuses on the way heritage is presented by two Greek state organisations, the Greek Ministry of Culture and the Greek National Tourism Organisation. It aims to explore the way practices are initiated for the presentation of the World Heritage Sites that Greece has nominated to the World Heritage List of the Convention concerning the Protection of the World Cultural and Natural Heritage. Archival analysis, interviews with people in the initiation and implementation processes and printed promotional material aimed at national level comprised the method of enquiry including primary and secondary sources and following a case study design. This mixture of sources was adopted in an attempt to identify and critically examine the association of World Heritage Sites with cultural, economic, educational, social and political values. Considering the socio-historical context within which the presentation of the World Heritage Sites is implemented, it was found that a specific image of Greece is promoted nationally and internationally. There is an attempt by the Greek state to redefine Greekness in the West with nominations of Byzantine Heritage Sites to the List that goes beyond the stereotypical view of Greece as a country of classical heritage. This is initiated at a time when the position of Greece in the West has been questioned. The findings revealed the role attributed to the international community, acting as the significant other, that provides a way for the presentation of specific World Heritage properties. Although it was found that there is not an intensified presentation of World Heritage Sites at national level by the two organisations, the way it is decided to present sites aims at giving a point of reference for people to imagine themselves culturally but also politically. Our focus, then, is based on the social organisation of Greek identity as was found from the promotion of the Greek World Heritage Sites initiated by two state bureaucratic organisations. The critical examination of the communication activities of the two organisations, indicated their role in the presentation of notions of nationality that are connected to heritage. The state takes the role of the nation, promoting through a nationalist ideology 'constituent elements of Greekness'. In fact, the two organisations actually base their decisions on the power of the tangible sites and initiate their communication activities accordingly. Conflicts towards the presentation of the World Heritage Sites exist between the Ministry of Culture and Greek National Tourism Organisation which are associated with the allocation of power that heritage entails, yet both organisations have a role to play in the presentation of Greekness. The significance attached to specific cultural heritage, associated with the past, centres around sites of classical antiquity and the Byzantine epoch, which, although different traditions, are heritages which the state of Greece presents as unitary through the presentation of World Heritage Sites and which come to define the bipolar identity of Greece at national and international level. This, though, has implications for the process of social organisation of identity in the multicultural world that we live in.
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Tizaoui, Abdelkhalek. "Etude théorique, numérique et expérimentale de l'échange de chaleur entre un fluide et le sol par un échangeur bitubulaire vertical." Valenciennes, 1989. https://ged.uphf.fr/nuxeo/site/esupversions/4e75693b-4fbb-4e3f-9f3d-b412562fb545.
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La thèse est consacrée à l’étude de l’échange de chaleur entre un fluide et un milieu solide tel que le sol par l’intermédiaire d’un échangeur bitubulaire vertical. Un modèle mathématique du comportement du système a été élaboré. Pour résoudre l’ensemble des équations, un algorithme de calcul numérique, basé sur l’utilisation des fonctions de Green afin de réduire le problème tridimensionnel à un problème bidimensionnel, a été mis au point. L’application du théorème de Duhamel a permis d’introduire la notion de réponse caractéristique de ce type d’échangeur. En vue de valider le modèle mathématique et numérique, une expérience a été réalisée en laboratoire. Les résultats des tests effectués avec des conditions aux limites différentes confirment avec une très bonne approximation les résultats théoriques. Ce modèle peut être alors utilisé comme un outil intéressant pour concevoir des échangeurs à puits multiples efficaces contribuant ainsi à l’élaboration de chaînes énergétiques rentables.
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Caldas, Patrício Ana Rita. "Ecology of the green sea turtle (Chelonia mydas L.) in a changing world." Thesis, University of Exeter, 2017. http://hdl.handle.net/10871/30061.
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Climate change is threatening biodiversity, causing populations and species to adapt, or otherwise, become extinct. Sea turtles have survived dramatic climate changes in the past, however, due to a history of intense human exploitation, and the current anthropogenic threats, their current resilience may be jeopardized. The main pursuits of this thesis were to i) evaluate the resistance of green turtles to predicted climate change impacts, using a globally significant rookery, in Poilão, Guinea-Bissau, as a case study; and ii) assess key population parameters to inform the conservation management of this resource. As the work developed I additionally had the opportunity to study the dynamics of an emerging disease in a juvenile foraging aggregation from Puerto Rico, which contributed to a broader understanding of resilience in this species. Specifically, I investigate the nest site selection behaviour of green turtles, their nesting environment, and the outcomes for their offspring, at Poilão, and apply this information to infer on the resilience of this population under future scenarios of climate change. I explore the connectivity established by the dispersal of post-hatchlings from Poilão, followed by their recruitment to foraging grounds, to set the geographical context of this major population. Lastly, I model the dynamics of Fibropapillomatosis, which affects juvenile green turtles globally, and examine the potential for disease recovery. The green turtle rookery in Poilão shows some resilience to expected climate change impacts. This significant population likely contributes to all juvenile foraging aggregations along the west coast of Africa, and to some extent to those in South America. Currently, green turtles are capable of recovery from Fibropapillomatosis, however, the incidence of disease may be enhanced by climate change.
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Fergusson-Rees, A. J. "Generation of hydrogen peroxide directly and in situ for green selective oxidation." Thesis, Imperial College London, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.486571.
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Grine, Ali. "Etude théorique et expérimentale de la convection forcée sur plaque plane en régime transitoire." Valenciennes, 2007. http://ged.univ-valenciennes.fr/nuxeo/site/esupversions/02301214-7798-4544-9f02-0c80132639f7.
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Ce travail de recherche traite les phénomènes convectifs en régime transitoire et plus particulièrement l’identification du coefficient d’échange convectif sur une plaque plane chauffée et placée dans un canal rectangulaire. Nous avons élaboré deux modèles analytiques : Le premier modèle est fondé sur la résolution de l’équation de propagation de la chaleur dans une plaque par la méthode des fonctions de Green, permettant de déduire de façon rigoureuse l’évolution du flux pariétal pénétrant dans le fluide, puis le coefficient d’échange convectif. Nous constatons que ce coefficient prend des valeurs très importantes au voisinage de puis décroît et tend vers une valeur limite constante en régime permanent proche des valeurs obtenues à partir des corrélations issues de la littérature. Le deuxième modèle, concerne quand à lui la résolution de l’équation de l’énergie dans le fluide dans le cas d’un flux de chaleur appliqué à l’interface solide-fluide en utilisant également la méthode des fonctions de Green. Cette démarche originale permet, connaissant le profil de vitesse dans la couche limite dynamique, de déterminer le profil de température dans tout le fluide et ainsi les températures et la couche limite thermique. Un banc d’essais expérimental a permis d’identifier les conditions limites nécessaires pour les deux modèles analytiques. Dans ce banc d’essais la plaque plane est exposée sur sa face inférieure à un créneau de flux transmis par conduction et pénétrant dans le fluide par la face supérieure sans perturber l’écoulement. Une Caméra Infrarouge installée en regard de la plaque permet d’enregistrer le profil de température sur cette face. Aucun système de mesure de flux n’est installé sur la face supérieure de la plaque ce qui évite de modifier les couches limites thermique et dynamiqueThis research work treats the convective phenomena in transitory mode. More particularly, it identifies the convective exchange coefficient on a heated plane plate and placed in a rectangular channel. Two analytic models are discussed:The first model is based on the resolution of the heat propagation equation in a plate using the Green functions method. By this method the evolution of penetrating parietal flow in the fluid and the convective exchange coefficient are deduced in a rigorous way. We notice that this coefficient takes very significant values in the vicinity of t = 0 then decreases and tends towards a constant limit value in permanent mode near the values obtained from the correlations used in he literature. The second model is based on the resolution of the fluid energy equation in the case of a heat flow applied to the solid-fluid interface also by using the Green functions method. This original approach allows, by knowing the speed profile in the dynamic boundary layer, to determine the temperature profile in all the fluid and thus the temperatures and the thermal boundary layer. An experimental test bench permitted to identify the necessary limiting conditions for the two analytical models. In this test bench the plane plate is exposed on its lower face to a crenel of flow transmitted by conduction and penetrating in the fluid by the higher face without disturbing the flow. An Infra-red Camera is installed towards the plate in order to record the temperature profile on this face. To avoid modifying the thermal and dynamic boundary layers, no flow measurement system is installed on the higher face of the plate
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Brax, Marleine. "Aléa et microzonage sismiques à Beyrouth." Thesis, Grenoble, 2013. http://www.theses.fr/2013GRENU050.
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Le Liban n'a pas souffert de grands tremblements de terre destructeurs depuis près de deux siècles. Il est toutefois traversé par la faille transformante majeure du Levant, séparant sur1000 km de longueur la plaque Arabique à l’est de la plaque Africaine à l’ouest. Ses principales branches au Liban sont la faille de Yammouneh qui traverse le pays du sud au nord, les failles de Serghaya et Rachaya dans sa partie Est, la faille de Roum et les failles inverses du Mont Liban dans la partie Ouest. Ces failles ont généré des séismes destructeurs dans la longue histoire connue de la région, parmi lesquels les plus importants sont ceux deJuillet 551 sur la faille du Mont-Liban, de mai 1202 sur la faille de Yammouneh, d’Octobre1759 sur la faille de Rachaya et de Novembre 1759 sur la faille de Serghaya. L'évaluation del'aléa et du risque sismique local est donc de première importance pour l'ensemble du pays.L'objectif du travail effectué dans cette thèse est d'appliquer au Liban les avancées réalisées ces dernières années dans le développement de nouveaux outils à la fois fiables et économiquement abordables pour l’évaluation de l’aléa sismique, en commençant par les grandes villes et en particulier la capitale Beyrouth. L'objectif est de mieux appréhender et comprendre le risque sismique sur le territoire libanais, pour pouvoir ensuite commencer à élaborer des politiques de prévention et des codes parasismiques qui puissent le réduire à terme.Un réseau sismologique temporaire composé de 10 stations a été installé dans Beyrouth etune partie de sa banlieue sur des sites représentatifs des principales unités géologiques présentes. Plusieurs dizaines de séismes locaux et régionaux ont pu y être enregistrés, et leur réponse sismique a été évaluée par la méthode du rapport spectral site sur référence (SSR),comparé au rapport spectral de la composante horizontale sur la composante verticale (H/V)calculé sur les tremblements de terre et sur le bruit ambiant. Les mêmes enregistrements ont également été utilisés pour prédire, par la technique des Fonctions de Green empiriques(FGE), le mouvement sismique correspondant à un événement majeur (Mw7.5) sur la faille de Yammouneh. Cet exercice de prédiction a toutefois été réalisé en deux étapes en raison des limitations dans l'application de la technique FGE en champ proche, avec deux techniques complémentaires: l'enregistrement d’un petit événement a été d'abord utilisé pour simuler un séisme de Mw6.5 sur la faille de Yammouneh, en parallèle à l'utilisation de plusieurs équations de prédiction de mouvement du sol (GMPE), soigneusement sélectionnées, pour effectuer une prédiction similaire. La comparaison FGE/GMPE a alors permis de calibrer la prédiction du mouvement du sol par GMPE à différents sites de Beyrouth pour l'événement cible de Mw7.5. Ces résultats ponctuels ont ensuite été étendus à l'ensemble de la municipalité de Beyrouth et de sa banlieue proche, en vue de mieux cerner les contours d'une future carte de microzonage, au travers d'une vaste campagne de mesures de bruit ambiant sur615 sites. Leur traitement H/V a permis d’obtenir une carte de la fréquence de résonance pour l'ensemble de la zone, carte dont la robustesse a été testée et prouvée. Des mesures sismiques actives et passives ont en outre été menées sur les principales unités géologiques à proximité des 10 sites préalablement sélectionnés et instrumentés, permettant ainsi d'obtenir les premières estimations directes de la vitesse des ondes de cisaillement (via les courbes de dispersion des ondes de Rayleigh). La comparaison de ces mesures avec les estimations -très dispersées - issues de la compilation des paramètres géologiques/géotechniques disponibles et des équations de corrélation existantes avec les valeurs N des SPT, montre tout l'intérêt de ces mesures simples et fiablesLebanon is one of the countries that have not suffered from large destructive earthquakes foralmost two centuries. It is however lying on the 1000 km long, left lateral Levant fault thatseparates the Arabic plate in the east from the African plate in the west. Its main branches inLebanon are the Yammouneh fault that crosses the country from south to north, the Serghayaand Rachaya faults in its Eastern part, the Roum and Mount Lebanon Thrust faults in itsWestern part. These faults have generated destructive earthquakes in the long known historyof the area. The largest events are: The July 551 earthquake on the Mount Lebanon Thrustfault, the May 1202 earthquake on the Yammouneh fault, the October 1759 on the Rachayafault and the November 1759 on the Serghaya fault. From all above, one can conclude thatLebanon is exposed to a significant seismic hazard. Assessing the local seismic hazard andrisk is therefore of primary importance for the whole country.The objective of the work undergone in this PhD is to take advantage of the latest advancesachieved worldwide to promote rather inexpensive, though reliable, seismic hazardassessment tools, to try to apply them in Lebanon starting with the big cities and specificallythe capital Beirut. These studies will help to understand the Lebanese seismic risk andsubsequently to start to elaborate seismic policies and codes that may help reducing this risk.A temporary seismological network consisting of 10 stations has been installed in Beirut anda part of its suburbs. Several tens of local and regional earthquakes could be recorded, andallowed to estimate the site response at selected sites in Beirut through the standard site toreference spectral ratio method ("SSR") on earthquakes, compared to the horizontal tovertical ratio ("H/V") calculated on earthquakes and on ambient noise. The same recordingscould also be used via the empirical Green Function’s technique ("EGF") to predict theseismic ground motion corresponding to a Mw7.5 on the Yammouneh fault. However, due tolimitations in near-field applications of the EGF technique, this prediction exercise wasperformed in two steps and with two complementary techniques: a weak event recording wasfirst used to simulate a Mw6.5 earthquake on the Yammouneh fault, while several, carefullyselected ground motion prediction equations (GMPE) were used to perform a comparativeprediction for the same earthquake. This EGF/GMPE comparison then allowed tuning theGMPE prediction of ground motion at various sites within Beirut for the target Mw7.5 event.The results were then extended in view of proposing a framework for a future microzonationviimap. A comprehensive campaign of ambient noise measurements was achieved for 615 sitesof Beirut municipality and close suburbs, the H/V processing of which allowed to derive arobust map of resonance frequency for the whole area. In addition, active and passive seismicmeasurements were conducted on different geological units near the 10 formerlyinstrumented sites, which provided quantitative estimates of the shallow S-wave velocitythrough the Rayleigh wave dispersion curves. These geophysical measurements permitted toprovide direct estimates of the shear waves velocity, which prove much more reliable thanthe highly scattered estimates derived from the compilation of the availablegeological/geotechnical parameters and the use of existing correlations equations betweenSPT N-value and S-wave velocity Vs
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Karagiannakis, Georgios. "Oral histories, hidden identities, silent waters : an audiovisual journey to the Greek side of the Prespa lakes." Thesis, Edinburgh Napier University, 2011. http://researchrepository.napier.ac.uk/Output/4727.
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Heck, Gregory B. "The LEED guidelines a framework for the development of green buildings and sites /." Cincinnati, Ohio : University of Cincinnati, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=ucin1060887850.
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Castro, Cruz David Alejandro. "Prédiction des mouvements sismiques forts : apport de l’analyse du comportement non-linéaire des sols et de l’approche des fonctions de Green empiriques." Thesis, Université Côte d'Azur (ComUE), 2018. http://www.theses.fr/2018AZUR4216/document.
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L'évaluation de l’aléa sismique doit tenir compte des différents aspects qui interviennent dans le processus sismique et qui affectent le mouvement du sol en surface. Ces aspects peuvent être classés en trois grandes catégories : 1) les effets de source liés au processus de rupture et à la libération d'énergie sur la faille. 2) les effets liés à la propagation de l'énergie sismique à l'intérieur de la Terre. 3) l'influence des caractéristiques géotechniques des couches peu profondes ; appelé effet de site. Les effets de site sont pris en compte dans la mitigation des risques par l'évaluation de la réponse sismique du sol. Lors de sollicitations cycliques, le sol présente un comportement non-linéaire, ce qui signifie que la réponse dépendra non seulement des paramètres du sol mais aussi des caractéristiques du mouvement sismique (amplitude, contenu en fréquence, durée, etc.). Pour estimer la réponse non-linéaire du site, la pratique habituelle consiste à utiliser des simulations numériques avec une analyse linéaire équivalente ou une approche non-linéaire complète. Dans ce document, nous étudions l'influence du comportement non-linéaire du sol sur la réponse du site sismique en analysant les enregistrements sismiques des configurations des réseaux de forages. Nous utilisons les données du réseau Kiban Kyoshin (KiK-Net). Les 688 sites sont tous équipés de deux accéléromètres à trois composantes, l'un situé à la surface et l'autre en profondeur. À partir de ces données, nous calculons les amplifications du mouvement du sol depuis la surface jusqu'aux enregistrements en fond de puit à l'aide des rapports spectraux de Fourier. Une comparaison entre le rapport spectral pour le faible et le fort mouvement du sol est alors réalisée. Le principal effet du comportement non-linéaire du sol sur la fonction de transfert du site est un déplacement de l'amplification vers les basses fréquences. Nous proposons une nouvelle méthodologie et un nouveau paramètre appelé fsp pour quantifier ces changements et étudier les effets non-linéaires. Ces travaux permettent d'établir une relation site-dépendante entre le paramètre fsp et le paramètre d'intensité du mouvement du sol. La méthode est testée sur les données accélérométriques du séisme de Kumamoto (Mw 7.1, 2016). Nous proposons ensuite d’utiliser des corrélations entre moment seismic et la duration de la faille (Courboulex et al., 2016), obtenues à partir d’une base de données globale de fonctions source et une méthode basée sur l’approche des fonctions de Green empiriques (EGF) stochastiques pour simuler les mouvements forts du sol dus à un futur séisme. Cette méthodologie est appliquée à la simulation d’un séisme de subduction en Équateur et comparée aux données réelles du séisme de Pedernales (Mw 7.8, 16 avril 2016) dans la ville de Quito. Nous proposons enfin de combiner la méthode de simulation de mouvements forts par EGF et la prise en compte des effets non-linéaires proposée dans les premiers chapitres. La méthode est testée sur les données accélérométriques d’une réplique du séisme de Tohoku (Mw 7.9)Seismic hazard assessments must consider different aspects that are involved in an earthquake process and affect the surface ground motion. Those aspects can be classified into three main kinds. 1) the source effects are related to the rupture process and the release of energy. 2) the path effects related to the propagation of energy inside Earth. 3) the influence of the shallow layers geotechnical characteristics; the so-called site-effects. The site effects are considered in risk mitigation through the evaluation of the seismic soil response. Under cyclic solicitations the soil shows a non-linear behavior, meaning that the response will not only depend on soil parameters but also on seismic motion input characteristics (amplitude, frequency content, duration, …). To estimate the non-linear site response, the usual practice is to use numerical simulations with equivalent linear analysis or truly non-linear time domain approach. In this document, we study the influence of the nonlinear soil behavior on the seismic site response by analyzing the earthquake recordings from borehole array configurations. We use the Kiban Kyoshin network (KiK-Net) data. All 688 sites are instrumented with two 3-components accelerometers, one located at the surface and the another at depth. From these data, we compute the ground motion amplifications from the surface to downhole recordings by the computing Fourier spectral ratios for the aim to compare between the spectral ratio for weak and strong ground motion. The main effect of the non-linear behavior of the soil on the site transfer function is a shift of the amplification towards lower frequencies. We propose a new methodology to quantify those changes and study the nonlinear effects. This work results in a site-dependent relationship between the changes in the site response and the intensity parameter of the ground motion. The method is tested analyzing the records of the earthquake of Kumamoto (Mw 7.1, 2016). Posteriorly, we propose to integrate a correlation between seismic moment and the duration of the fault (Courboulex et al., 2016) in the empirical Green’s function method. This methodology was applied to simulate one seduction event in Equator, and we compare the results with the records of the Pedernales earthquake (Mw 7.8, 2016) in the city of Quito. We attempt to take in account the nonlinear effects in the empirical Green’s function method. We use the methodologies of the first part of this document based on the frequency shift parameter. The procedure could be implemented in other methodologies that can predict an earthquake at a rock reference site, such as the stochastic methods. We test the procedure using the accelerometric records for one of the aftershocks o the Tôhoku earthquake (Mw 7.9)
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Kim, Mihye. "Studies on potential side-effects of green tea catechins on colitis and colon carcinogenesis." Kyoto University, 2007. http://hdl.handle.net/2433/136570.
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Kyoto University (京都大学)0048
新制・課程博士
博士(農学)
甲第13403号
農博第1658号
新制||農||948(附属図書館)
学位論文||H19||N4299(農学部図書室)
UT51-2007-Q804
京都大学大学院農学研究科食品生物科学専攻
(主査)教授 入江 一浩, 教授 吉川 正明, 教授 伏木 亨
学位規則第4条第1項該当
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Oliveira, Catarina Chemetova Cravo Branco. "Valorisation of forest biomass side-streams in add value green products for horticultural industry." Doctoral thesis, ISA, 2020. http://hdl.handle.net/10400.5/21210.
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Doutoramento em Engenharia do Ambiente / Instituto Superior de Agronomia. Universidade de LisboaHorticulture industry uses peat as the main constituent in growing media formulations due to its ability to support efficient plant production. However, peat is a non-renewable resource at its actual extraction rate, and environmental issues associated with greenhouse gases emission from peat harvest raised peatland ecosystem conservation awareness through environmental initiatives, organizations and politics worldwide, limiting its use. There has been an increasing demand for environmentally friendly peat alternatives focused on locally available, organic and renewable materials from industrial side-streams, mainly wood-based and forest biomass. Therefore, woody raw-materials physical, chemical and biological properties are important to determinate further pre-treatment identification and choice. This work evaluates bark-based growing media suitability from non-native forest species in Mediterranean region, Acacia melanoxylon – residual biomass from invasive species control – and Eucalyptus globulus – a pulpwood industrial waste-stream. Ageing, a zero-waste treatment, allowed A. melanoxylon mature bark to effectively replace half of container medium volume as peat alternative. Low-temperature hydrothermal treatment, a faster process, enabled E. globulus bark to substitute quarter container medium volume, ensuring equal plant performance as commercial material. Both raw-materials sieve size manipulation promoted its incorporation as aeration growing media component. Given the wood-based raw-materials nature, Nitrogen amendment should be provided according to plant and cultivation system’s needs. Furthermore, by replacing the ‘end-of-life’ biomass material into new potential horticultural products, circular economy approach was applied throughout this study. Thus, A. melanoxylon juvenile bark extracts phytotoxic effect showed a promising non-synthetic and natural bio-herbicide for weed control. In response to the potential circularity of invasive species biomass resources into add-value horticultural products, the present study outcome underlines Acacia species biomass commercial valorisation as alternative management tool to support the costs of control, avoiding the potential risk of conflict between economic exploitation and negative environmental impact
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Wu, Jeffrey Chun. "Enhancing Protein and Enzyme Stability Through Rationally Engineered Site-Specific Immobilization Utilizing Non-Canonical Amino Acids." BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/4355.
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The demand for economical, efficient protein production, reuse, and recovery has never been greater due to their versatility in a large variety of applications ranging from industrial chemical manufacturing to pharmaceutical drug production. The applications for naturally and artificially produced proteins include protein drugs and other pharmaceutical products, as biocatalysts in environmentally friendly chemical manufacturing, as enzymes for food processing purposes, and as an essential component in many biomedical devices. However, protein production suffers from many challenges, which include the cost of production, protein stability especially under harsh conditions, and recoverability and reusability of the proteins. The combination of two developing technologies, cell-free protein synthesis systems (CFPS) and unnatural amino acid incorporation, provides solutions to these protein production challenges.This dissertation reports on the use of cell-free protein synthesis systems and unnatural amino acid incorporation to develop new proteins and enzyme immobilization techniques that significantly increase activity and stability while simplifying recoverability and reuse.
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Davies, Gordon Neil. "Economic geography of the ancient Greek countryside : a re-examination of monumental rural sites on the island of Siphnos." Thesis, University of Oxford, 1998. http://ora.ox.ac.uk/objects/uuid:a3ab7d1e-eb0f-44d4-9338-b21112c19580.
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Part I: Approaches to the study of the ancient Greek countryside. Chapter 1: The ancient Greek countryside in classical scholarship. The Introduction locates the present study within the wider historiography of research into the ancient Greek countryside, assessing the contribution of geographical, archaeological and anthropological studies to the history of the ancient countryside, and analysing the methods which have tended to place the subject on the margins of traditional, text-based studies of the ancient world. Chapter 2: The context of the case study. Ch. 2 justifies the choice of the island of Siphnos as a case study to reassess the archaeology of the ancient Greek countryside in the light of the Ch. 1. The regional context, and the physical environment of this particular polis, are briefly described. Chapter 3: The archaeological record of rural sites. More than fifty rural sites exhibiting monumental masonry construction (towers and associated structures) have been recorded throughout the chora of Late Classical-Hellenistic Siphnos. Problems in identifying and dating occupation at rural sites are discussed within the context of the island's topography and long-term settlement history. Historical, epigraphic, ethnographic and archaeological evidence is considered with regard to the interpretation of monumental rural sites. The sites are then re-examined with regard to their architectural construction (Ch.4), their location and distribution (Ch.5), local land use (Ch.6), and the regional context of the countryside (Ch.7), in order to examine the economic geography of the polis. Part II: Monumental rural sites in the chora of ancient siphnos. Chapter 4: Social archaeology of the countryside - architecture of rural sites. The rural sites are analysed according to their architectural plan, construction, orientation, and the presence of adjoining and adjacent structures, walls, courtyards, buildings and water collection devices. Chapter 5: Social archaeology of the countryside - location and distribution of rural sites. The location of rural sites is examined according to aspect, elevation, coastal distance, intervisibility and nearest neighbour analysis in order to examine hypotheses concerning their functions. It is argued that the majority of rural sites on Siphnos fulfilled an agrarian, rather than strategic function. Chapter 6: Social archaeology of the countryside - land use at rural sites. Many monumental rural buildings were built on steep sloped uplands (eschatiai). Strategies of land use (including extractive activities, agriculture, animal husbandry) are considered in relation to the architecture and location of rural site complexes. Chapter 7; Conclusion - rural sites and the polis. The Conclusion evaluates the findings of the case study according to patterns of rural building and land use in the ancient Greek countryside and discusses future opportunities for research in the subject. Volume II contains Appendices and Plates relevant to the case study in Volume I.
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Adhinarayanan, Vignesh. "Models and Techniques for Green High-Performance Computing." Diss., Virginia Tech, 2020. http://hdl.handle.net/10919/98660.
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High-performance computing (HPC) systems have become power limited. For instance, the U.S. Department of Energy set a power envelope of 20MW in 2008 for the first exascale supercomputer now expected to arrive in 2021--22. Toward this end, we seek to improve the greenness of HPC systems by improving their performance per watt at the allocated power budget.
In this dissertation, we develop a series of models and techniques to manage power at micro-, meso-, and macro-levels of the system hierarchy, specifically addressing data movement and heterogeneity. We target the chip interconnect at the micro-level, heterogeneous nodes at the meso-level, and a supercomputing cluster at the macro-level. Overall, our goal is to improve the greenness of HPC systems by intelligently managing power.
The first part of this dissertation focuses on measurement and modeling problems for power. First, we study how to infer chip-interconnect power by observing the system-wide power consumption. Our proposal is to design a novel micro-benchmarking methodology based on data-movement distance by which we can properly isolate the chip interconnect and measure its power. Next, we study how to develop software power meters to monitor a GPU's power consumption at runtime. Our proposal is to adapt performance counter-based models for their use at runtime via a combination of heuristics, statistical techniques, and application-specific knowledge.
In the second part of this dissertation, we focus on managing power. First, we propose to reduce the chip-interconnect power by proactively managing its dynamic voltage and frequency (DVFS) state. Toward this end, we develop a novel phase predictor that uses approximate pattern matching to forecast future requirements and in turn, proactively manage power. Second, we study the problem of applying a power cap to a heterogeneous node. Our proposal proactively manages the GPU power using phase prediction and a DVFS power model but reactively manages the CPU. The resulting hybrid approach can take advantage of the differences in the capabilities of the two devices. Third, we study how in-situ techniques can be applied to improve the greenness of HPC clusters.
Overall, in our dissertation, we demonstrate that it is possible to infer power consumption of real hardware components without directly measuring them, using the chip interconnect and GPU as examples. We also demonstrate that it is possible to build models of sufficient accuracy and apply them for intelligently managing power at many levels of the system hierarchy.Doctor of Philosophy
Past research in green high-performance computing (HPC) mostly focused on managing the power consumed by general-purpose processors, known as central processing units (CPUs) and to a lesser extent, memory. In this dissertation, we study two increasingly important components: interconnects (predominantly focused on those inside a chip, but not limited to them) and graphics processing units (GPUs). Our contributions in this dissertation include a set of innovative measurement techniques to estimate the power consumed by the target components, statistical and analytical approaches to develop power models and their optimizations, and algorithms to manage power statically and at runtime. Experimental results show that it is possible to build models of sufficient accuracy and apply them for intelligently managing power on multiple levels of the system hierarchy: chip interconnect at the micro-level, heterogeneous nodes at the meso-level, and a supercomputing cluster at the macro-level.
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Gravouniotis, Paraskevas. "Seasonal power peaking and the diffusion of demand-side technologies : modelling socio-economic & technical dynamics in the Greek Islands." Thesis, Imperial College London, 2010. http://hdl.handle.net/10044/1/12033.
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Puig, i. Griessenberger Anna M. "Rhode. Caracterització del jaciment i de les produccions dels seus tallers ceràmics." Doctoral thesis, Universitat de Girona, 2006. http://hdl.handle.net/10803/7847.
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RESUMEn la primera part de la tesi es revisen els materials arqueològics i els documents de les excavacions antigues al jaciment grec de la Ciutadella de Roses (Alt Empordà). Es fan estudis comparatius i de conjunt amb els resultats proporcionats per les excavacions recents. A partir d'aquí s'obté una periodització del jaciment, des del moment de la fundació de la colònia massaliota de Rhode, al segon quart del segle IV aC, fins a la fi de la ciutat, al 195 aC. Es tracten aspectes de topografia, urbanisme i estudi dels edificis. La segona part analitza les produccions dels tallers ceràmics (vernissos negres, pastes clares, ceràmiques de cuina i altres produccions secundàries). Es fa una nova classificació, un estudi de les formes, de la cronologia i paral·lels. S'estudien les instal·lacions dels tallers, els forns, la seva capacitat, les argiles i les terreres. Es conclou amb una caracterització socioeconòmica i històrica de la ciutat, i dels aspectes històrics relacionats amb les fases de la seva fundació, desenvolupament i fi.
In the first part of this doctoral thesis archaeological materials and documents from old excavations in the Greek site of the Citadel in Roses are revised. Comparative and global investigation is carried out between information provided by old excavations and that coming from the more recent ones. The results help to put forward a site periodisation from the Rhode massaliot colony foundation, during the 4th century up to the ending of the village in 195 BC.
Topographic and urban aspects as well as studies of the buildings are presented. The second half of the study analyzes the production of the pottery workshops (black varnishes, light pastes, kitchenware and other secondary productions). A new classification system is presented which is based on both morphological and chronological studies and their territorial similarities. Workshops installation, their ovens, their capacity, clays and claypits are examined.
The paper is finished with a description of socioeconomic and historic aspects of the village and the historical traits concerning the foundation phases, their development and final stages.
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Goodling, Erin Katherine. "Grassroots Resistance in the Sustainable City: Portland Harbor Superfund Site Contamination, Cleanup, and Collective Action." PDXScholar, 2017. https://pdxscholar.library.pdx.edu/open_access_etds/3613.
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How does progressive change happen in so-called sustainable cities? In this dissertation, I present findings from a three year-long ethnographic investigation of grassroots organizing in Portland, Oregon, a city at the leading edge of the green urbanism movement. This research centered on an extended case study of the Portland Harbor Community Coalition (PHCC). PHCC is an alliance of grassroots groups working to ensure that cleanup of the Portland Harbor Superfund Site benefits those who have been most impacted by pollution. In this dissertation, I develop three main empirical findings. First, despite depoliticized (sustainability) discourse permeating the harbor cleanup planning process, which excluded impacted communities from and minimized disparate impacts resulting from contamination and cleanup, there has not necessarily been a green growth machine operating in the way that we would expect. Instead, a classic status quo growth machine has indirectly pushed depoliticized sustainability discourse, and benefited from it at the expense of vulnerable residents -- even in a paradigmatic sustainable city. Second, in contrast to the "just green enough" strategies put forth in previous research, there are, in fact, grassroots groups who are demanding robust environmental improvements as part of broader social and environmental justice outcomes. PHCC takes an "oppositional community development" approach in attempting to transcend the green development-displacement dialectic. This approach has entailed being strategically confrontational some of the time, and engaging through more established participation channels at other times. Third, individual and collective historicized learning has played a key role in PHCC's efforts to re-politicize the cleanup planning process in three ways: it helped coalition members connect their personal experiences to the harbor; it helped coalition members build a political analysis of the cumulative and inter-generational ways that harbor pollution has impacted different groups; and a collectively produced historical narrative ultimately contributed to the coalition's moderate success in pushing public agencies to be more responsive to impacted communities.
More broadly, this research draws attention to the historical contingencies, organizing approaches, challenges, and transformations experienced by ordinary people coming together to fight for a more just sustainability. It suggests that in order to develop a fuller understanding of urban socio-ecological change processes--and to make meaningful contributions to change in an era of environmental crisis, extreme housing instability, racial violence, and other forms of oppression--scholars must pay attention to those working on the front lines of change, themselves, in broader historical context.
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Bragd, Sophia, and Lovisa Lindgren. "Does Size Matter? : An event study exposing the relative size of a green bond issue and its impact on value creation for corporations." Thesis, Uppsala universitet, Företagsekonomiska institutionen, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-438028.
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Capital markets have changed profoundly since green bonds were first introduced in 2013 as a way of financing programs benefiting social and environmental sustainability. The purpose of this study is to investigate whether green bond issues are related to value creation as compared with conventional bond issues, and how the relative size of a bond issue may impact this relationship. Using bonds issued on Nasdaq Stockholm from 2014 to 2020, our study finds no significant abnormal returns for green bonds, the benchmark of conventional bonds nor the comparison of the means. Further, we could not find an interaction effect between the relative issue size and the green bond. Hence, this study finds no indication that green bonds create value. However, we show that relative size has a positive and significant regression coefficient in all models, meaning that the larger the relative size of a bond issue, the more the stock price is expected to increase.
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Khosla, Niti Gautam. "Development of a framework to assist owners in deciding to use sustainable site design practices for institutional buildings." Diss., Connect to online resource - MSU authorized users, 2007.
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Thesis (M.S.)--Michigan State University, Construction Management Program, 2007.Title from PDF t.p. (viewed on June 12, 2008). Available through UMI ProQuest Digital Dissertations. Includes bibliographical references (p. 284-286).
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Churchland, Carolyn Trelawny. "Green-tree-retention harvesting as a tool to maintain soil microbial diversity and function in harvested sites." Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/44724.
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Green-tree or variable-retention harvesting is increasingly being used in the Pacific Northwest due to the perceived benefits to aboveground biodiversity. Little research has been conducted on the value of this harvesting practice for soil organisms, though retained live trees on harvested sites are thought to benefit belowground biodiversity by acting as “hubs” of both species-specific and symbiotic microbial communities. Access to these communities may be necessary for seedling growth and forest regeneration after harvest. Live trees support microbial communities by maintaining a constant source of labile carbon through litter and root exudates. The aim of this thesis dissertation project was to trace the flow of carbon from live trees retained on clear-cut sites in different variable-retention harvesting regimes into the soil microbial community to determine which variable-harvesting regime best maintained pre-harvest soil microbial communities and soil microbial function. Two variable-retention strategies were compared: aggregate-retention, where intact forest patches are retained, and dispersed-retention, where individual trees are retained across the site. Both harvesting strategies decreased the fungal to bacterial ratio although the dispersed-retention harvesting treatment mitigated the effects of harvesting on soil nutrient availability. Aggregate-retention harvesting, even within 9 meters of the retention patch, did not appear to influence nutrient availability, but evidence suggested the microbial community within this area was supported by recent plant-carbon. Through analysis of stable-isotope natural abundance and application of a novel stable-isotope labeling stem-injection technique, I was able to discern that individual trees support the fungal community up to 20 meters into a clear-cut. However, the lack of recently-derived labile plant carbon in clear-cuts resulted in changes to soil carbon-cycling. The microbial community in clear-cut sites appeared to rely on tightly recycled labile microbial-derived carbon that was probably released during microbial turnover, rather than dissolved organic carbon. In the highly disturbed clear-cut areas, the microbial communities may have lost some of their ability to break down recalcitrant soil organic matter. Both variable-retention strategies investigated affected soil microbial community composition; though it appeared that dispersed-retention best maintained microbial community function on harvested sites.
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Calandrino, Elizabeth Saunders Paerl Hans W. "Determining the invasion potential for the harmful blue-green alga cyanobacterium Cylindrospermopsis raciborskii at the Currituck Banks Nerrs site, Currituck Sound, North Carolina." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2009. http://dc.lib.unc.edu/u?/etd,2597.
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Thesis (M.S.)--University of North Carolina at Chapel Hill, 2009.Title from electronic title page (viewed Oct. 5, 2009). "... in partial fulfillment of the requirements for the degree of Master of Science in the Department of Marine Sciences." Discipline: Marine Sciences; Department/School: Marine Sciences.
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Lachet, Corinne. "Observation des séismes en milieux urbains : méthodes simples d'étude des effets de site et de simulation des mouvements forts." Phd thesis, Grenoble 1, 1996. http://www.theses.fr/1996GRE10236.
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L'objectif de ce travail est de proposer des methodes simples d'estimation du mouvement sismique, applicables facilement, particulierement dans le cas de milieux urbains. Ce sont, en effet, les grandes agglomerations qui sont souvent le siege de degats catastrophiques, et il est donc necessaire de pouvoir fournir des techniques faciles a mettre en uvre pour l'etude du mouvement sismique auquel les structures construites doivent resister. Dans la premiere partie, nous etudierons une methode d'estimation des effets de site lies a la geologie locale, basee sur le calcul du rapport spectral entre composantes horizontales et verticale (rapport h/v), sur des enregistrements de bruit de fond. Nous avons, dans un premier temps, realise une etude par simulation numerique permettant de mettre en evidence certains des parametres qui controlent l'utilisation de cette methode, ainsi que ses limites de validite. Une comparaison avec d'autres techniques classiques d'estimation des effets de site met en evidence les possibilites et les inconvenients de chacune d'elles, dans le cadre d'une grande ville. La deuxieme partie de ce travail concerne la simulation de mouvements forts, avec pour objectifs les points suivants: fournir une methode egalement applicable en milieux urbains, etre en mesure de produire des simulations en champ proche, reduire la complexite et le temps de calcul necessaires a la simulation, pouvoir effectuer des simulations a priori en des sites ou aucun mouvement fort n'a encore ete enregistre. Pour essayer de satisfaire ces objectifs nous proposons l'utilisation d'une technique basee sur le principe de la methode des fonctions de green empiriques. Nous utilisons ici des fonctions de green theoriques, l'enregistrement de petits seismes etant tres difficile en zone urbaine. Le seisme cible est defini par un nombre de parametres relativement reduit: son moment sismique ainsi que la taille et l'orientation du plan de faille
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Balfour, Martha. "Abiotic Differences Between Green Turtle (Chelonia Mydas) Nests in Natural Beach and Engineered Dunes: Effects on Hatching Success." Master's thesis, University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2439.
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Habitat loss is among the biggest threats to conservation worldwide, so habitat restoration plays an increasing role in endangered species management. This is especially true for species with high site fidelity, such as nesting marine turtles. Sand replenishment is commonly used to restore coastal beaches after severe erosion events, and may affect marine turtles and other species that live or reproduce in that habitat. I investigated how abiotic characteristics of sand used in a dune restoration project at Archie Carr National Wildlife Refuge, Florida, affected reproduction of the federally-endangered green turtle (Chelonia mydas). Sand structure and composition can affect egg development and hatching success by altering nest conditions, with nests in fine-grain or very coarse sand suffering decreased hatching success. I determined that calcium carbonate content (27.0% ± 1.4 SE vs. 15.1% ± 3.8 SE), moisture content (3.29% ± 0.26 SE vs. 4.59% ± 0.25 SE), and grain size (427.53 μm ± 14.1 SE vs. 274.66 μm ± 29.1 SE) differed significantly between natural and restored dunes. Hatching success of green turtles (44.7% ± 6.2 SE vs. 65.8% ± 5.3 SE) was significantly lower on restored dunes compared to natural dunes with an estimated loss of 22,646 hatched eggs. Hatching success also decreased as the nesting season progressed. These results demonstrate the importance of regulating fill material used in beach restoration projects; substrate characteristics are easily evaluated and can significantly influence marine turtle hatching success.M.S.
Department of Biology
Sciences
Biology MS
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Solari, Cristian Alejandro. "A HYDRODYNAMICS APPROACH TO THE EVOLUTION OF MULTICELLULARITY: FLAGELLAR MOTILITY AND THE EVOLUTION OF GERM-SOMA DIFFERENTIATION IN VOLVOCALEAN GREEN ALGAE." Diss., The University of Arizona, 2005. http://hdl.handle.net/10150/194798.
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The fitness of any evolutionary unit can be understood in terms of its two basic components: fecundity and viability. The trade-offs between these fitness components drive the evolution of a variety of life-history traits in extant multicellular lineages. Here, I show evidence that the evolution of germ-soma separation and the emergence of individuality at a higher level during the unicellular-multicellular transition are also consequences of these trade-offs. The transition from unicellular to larger multicellular organisms has benefits, costs, and requirements. I argue that germ-soma separation evolved as a means to counteract the increasing costs and requirements of larger multicellular colonies. Volvocalean green algae are uniquely suited for studying this transition since they range from unicells to undifferentiated colonies, to multicellular individuals with complete germ-soma separation. In these flagellated organisms, the increase in cell specialization observed as colony size increases can be explained in terms of increased requirements for self-propulsion and to avoid sinking. The collective flagellar beating also serves to enhance molecular transport of nutrients and wastes. Standard hydrodynamic measurements and concepts are used to analyze motility (self-propulsion) and its consequences for different degrees of cell specialization in the Volvocales as colony size increases. This approach is used to calculate the physical hydrodynamic limits on motility to the spheroid colony design. To test the importance of collective flagellar beating on nutrient uptake, the effect of advective dynamics on the productivity of large colonies is quantified. I conclude first, that when colony size exceeds a threshold, a specialized and sterile soma must evolve, and the somatic to reproductive cell ratio must increase as colony size increases to keep colonies buoyant and motile. Second, larger colonies have higher motility capabilities with increased germ-soma specialization due to an enhancement of colony design. Third, advection has a significant effect on the productivity of large colonies. And fourth, there are clear trade-offs between investing in reproduction, increasing colony size (i.e. colony radius), and motility. This work shows that the evolution of cell specialization is the expected outcome of reducing the cost of reproduction in order to realize the benefits associated with increasing size.
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Zhang, Long. "In-Situ Infrared Studies of Adsorbed Species in CO2 Capture and Green Chemical Processes." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1481213980572202.
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Seward, Lindsay C. N. "The Relationship between Green Sea Urchin Spawning, Spring Phytoplankton Blooms, and the Winter-Spring Hydrography at Selected Sites in Maine." Fogler Library, University of Maine, 2002. http://www.library.umaine.edu/theses/pdf/SewardLCN2002.pdf.
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Meyer-Grandbastien, Alice. "Perception écologique et sociale de la biodiversité des espaces verts urbains publics." Thesis, Rennes 1, 2019. https://ged.univ-rennes1.fr/nuxeo/site/esupversions/2e7b97f3-4889-4f6a-9d89-adb522b001da.
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Dans un contexte d’urbanisation mondiale croissante, des travaux de recherche interdisciplinaire sont nécessaires pour une approche intégrée et appliquée articulant les bénéfices environnementaux et sociaux des espaces verts urbains (EVU) publics. Le premier objectif de ce travail de thèse a été d’analyser les processus sous-jacents de la relation établie dans la littérature entre la diversité d’espèces dans les EVU publics et la restauration psychologique ressentie par les usagers. L’hypothèse posée était que l’hétérogénéité paysagère, un paramètre environnemental qui est associé à la diversité d’espèces dans les EVU publics, est perceptible par les usagers et favorable à leur restauration psychologique. Sur la base des résultats, le second objectif a été d’identifier des pratiques d’aménagement et de gestion des EVU publics permettant de favoriser à la fois la biodiversité et le bien-être psychologique des usagers. Nous avons démontré que l’hétérogénéité paysagère configurationnelle, précisément le mélange des trois strates de végétation et des zones fleuries, est perçue par les usagers et favorise leur restauration psychologique. L’hétérogénéité paysagère est donc un facteur explicatif dans la relation établie entre la diversité d’espèces dans les EVU publics et la restauration psychologique ressentie par les usagers. Nous avons également mis en évidence que la perception de l’hétérogénéité paysagère par les usagers est particulièrement induite par des variations de hauteur de la végétation. En outre, le sexe, le parcours géographique, et la diversité des activités des usagers ont une influence sur leur perception de l’hétérogénéité paysagère. Nous avons ensuite identifié des pratiques d’aménagement et de gestion des EVU publics permettant d’augmenter le mélange de différentes hauteurs des trois strates de végétation et des zones fleuriesIn a context of increasing global urbanization, interdisciplinary research is needed towards an integrated and applied apprIn a context of increasing global urbanization, interdisciplinary research is needed towards an integrated and applied approach that articulates the environmental and social benefits provided by public urban green spaces (UGS). The first objective of this thesis was to analyze the underlying processes of the relationship demonstrated in the literature between species diversity in public UGS and psychological restoration of visitors. Our hypothesis was that landscape heterogeneity, an environmental parameter that is related to species diversity within public UGS, is perceivable by visitors and beneficial to their psychological restoration. Following the results, the second objective was to identify planning and management practices of public UGS that promote both biodiversity and visitors’ well-being. We showed that landscape configurational heterogeneity, precisely the mixing of the three strata of vegetation and flower areas, is perceived by visitors and favors their psychological restoration. Landscape heterogeneity is thus an explanatory factor in the relationship demonstrated between species diversity in public UGS and psychological restoration of visitors. We also showed that visitor’s perception of landscape heterogeneity is especially induced by variations in the vegetation height. Moreover, visitor’s gender, childhood environment, and diversity of activities have an influence on their perception of landscape heterogeneity. We then identified planning and management practices of public UGS that enhance the mixing of different heights of the three vegetation strata and flower areas
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Steele, Kelly. "The advancement of Taliesin's preservation through Internet communication." Virtual Press, 1998. http://liblink.bsu.edu/uhtbin/catkey/1133735.
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The Taliesin Preservation Commission works to preserve Taliesin - Frank Lloyd Wright's Wisconsin estate in Spring Green, Wisconsin - while educating the public about the importance of Taliesin and Wright. The Commission is a private, not-for-profit organization whose future depends on private donations and grants. Creating a presence for the Commission on the Internet will allow the organization to substantially achieve its goals by increasing awareness and education while heightening funding opportunities. This project created a website for the Taliesin Preservation Commission. The effort involved background research into the Internet, its capabilities, the Commission, and their needs. While this information supported the development of the project, the project focused on the web authoring. The primary activities included site content development, site organization, research, writing of text, graphic development, page design, and HTML code writing. In addition, the project secured website storage space and dial-up access for the Commission. It concluded with the launching of the Taliesin Preservation Commission's website at www.taliesinpreservation.org.Department of Architecture