Global ETD Search

21	Collaboration Between Children : working with the educational software Quest Atlantis / Barns samarbete i användandet av den utbildande mjukvaran Quest Atlantis Collin, Charlotte, Olsson, Therese, Persson, Sofie January 2004 (has links) Will the different levels of knowledge contribute to a collaborative learning? This thesis is based on a tuition experiment with children in small groups, working with the educational software Quest Atlantis at Kensington Park Elementary school in Miami. During this research we have found some similarities and new concepts within Damon’s and Phelps’s three peer learning concepts (1989). Through our investigation of how children collaborate and learn from each other, we discovered that anyone could be a contributor to the collaboration. Through our transcription we defined and measured patterns of collaboration between the pupils, which we used to identify how the pupils collaborated. Out of this we constructed two new concepts, Temporary Expert and Concealed Contributor, which affects the collaboration in different ways. / Den här uppsatsen är baserad på experimentell undervisning med barn i små grupper som arbetar med det utbildande mjukvaruprogrammet Quest Atlantis. Undervisningen hölls på Kensington Park Elementary school i Miami, Fl –USA. Under vår undersökning har vi hittat likheter, men även nya koncept inom Damon’s och Phelp’s tre ”peer learning” koncept (1989). Genom vår undersökning om hur barn samarbetar och lär av varandra, upptäckte vi att alla tillförde något till samarbetet. I vår transkribering kunde vi definiera och mäta olika typer av samarbetsmönster mellan eleverna. Med hjälp av dessa samarbetsmönster kunde vi sedan identifiera hur eleverna samarbetade. Utifrån detta konstruerade vi två nya koncept, ”Temporary Expert” och ”Concealed Contributor”, vilka båda påverkar samarbetet. / Charlotte Collin 0706-376548 Therese Olsson 0736-292110 Sofie Persson 0733-505105 Quest Atlantis Collaboration Expert Temporary Expert Concealed Contributor Computer Sciences Datavetenskap (datalogi)
22	An Ecosystem-Based Approach to Reef Fish Management in the Gulf of Mexico Masi, Michelle D. 10 November 2016 (has links) Fisheries managers have the potential to significantly improve reef fish management in the Gulf of Mexico through the use of ecosystem-based approaches to fisheries management. Ecosystem-based approaches are needed to address the effects of fishing on trophodynamic interactions, to better account for ecosystem-scale processes in model projections, and to recognize the short and long-term biomass tradeoffs associated with making regulatory choices. My research was concentrated around three objectives: (1) characterizing the trophodynamic interactions between Gulf of Mexico fishes, in order to construct an invaluable tool (a Gulf of Mexico Atlantis model) to be used in ecological hypothesis testing and policy performance evaluation for years to come; (2) predicting ecological indicators for the Gulf of Mexico that both respond to fishing pressure and are robust to observational error, and; (3) evaluating the performance of an ecosystem-based policy options for managing reef fish species in the Gulf of Mexico. To accomplish these objectives, a spatial, trophodynamic ecosystem model- Atlantis, was employed to represent the Gulf of Mexico marine ecosystem. To characterize trophic interactions between modeled species, I applied a maximum likelihood estimation procedure to produce Dirichlet probability distributions representing the likely contribution of prey species to predators’ diets. This provided mode values (the peak of the distribution) and associated error ranges, which describe the likely contribution of a prey item in a predator’s diet. The mode values were used to parameterize the availabilities (diet) matrix of the Gulf of Mexico Atlantis model. Investigating trophic interactions was useful for determining which species within the Atlantis model were data rich, and justified the emphasis on reef fish species and their prey items in subsequent analyses. Once parameterized and calibrated, I used the Atlantis model to project ecological indicators over a 50 year time horizon (2010-2060) under varying levels of fishing mortality. Principal component analysis was used to evaluate ecological indicator trajectories in multivariate space, to rank indicators according to how well they describe variability in ecosystem structure (termed ‘importance’), to reveal redundancies in the information conveyed, to quantify interannual noise and to determine how robust indicators are to observational error. Reef fish catch, Red snapper biomass, King mackerel biomass and Species richness indicators ranked the highest in terms of importance and robustness to error and in having low levels of interannual noise (i.e., requiring less frequent monitoring). I then used a management strategy evaluation (MSE) framework in Atlantis to evaluate some of these same indicators under an ecosystem-based approach to fisheries management – using robust harvest control rules to manage reef fishes. I found that this ecosystem-based policy option was able to maintain higher reef fish biomass, catch and ecosystem-wide biodiversity under any given level of fishing mortality when compared to a status quo management approach. These results suggest that harvesting under the HCRs encourages an alternative ecosystem state with a more Pareto-efficient tradeoff frontier than the status-quo policy. A potentially reduced extinction risk for reef fish is plausible under this ecosystem-based policy option. This research provides a quantitative look at the fishery performance and ecological tradeoffs associated with various policy options. MSE methodology using ecosystem-based policy performance metrics is also demonstrated. Tool development and findings from this research should aid in the development of ecosystem-based policies for this region. Ecosystem modeling Atlantis reef fish integrated ecosystem assessment ecosystem-based fisheries management Ecology and Evolutionary Biology Environmental Sciences Natural Resources Management and Policy
23	Fashioning Society in Eighteenth-century British Jamaica Northrop, Chloe Aubra 12 1900 (has links) White women who inhabited the West Indies in the eighteenth century fascinated the metropole. In popular prints, novels, and serial publications, these women appeared to stray from “proper” British societal norms. Inhabiting a space dominated by a tropical climate and the presence of a large enslaved African population opened white women to censure. Almost from the moment of colonial encounter, they were perceived not as proper British women but as an imperial “other,” inhabiting a middle space between the ideal woman and the supposed indigenous “savage.” Furthermore, white women seemed to be lacking the sensibility prized in eighteenth-century England. However, the correspondence that survives from white women in Jamaica reveals the language of sensibility. “Creolized” in this imperial landscape, sensibility extended beyond written words to the material objects exchanged during their tenure on these sugar plantations. Although many women who lived in the Caribbean island of Jamaica might have fit the model, extant writings from Ann Brodbelt, Sarah Dwarris, Margaret and Mary Cowper, Lady Maria Nugent, and Ann Appleton Storrow, show a longing to remain connected with metropolitan society and their loved ones separated by the Atlantic. This sensibility and awareness of metropolitan material culture masked a lack of empathy towards subordinates, and opened the white women these islands to censure, particularly during the era of the British abolitionist movement. Novels and popular publications portrayed white women in the Caribbean as prone to overconsumption, but these women seem to prize items not for their inherent value. They treasured items most when they came from beloved connections. This colonial interchange forged and preserved bonds with loved ones and comforted the women in the West Indies during their residence in these sugar plantation islands. This dissertation seeks to complicate the stereotype of insensibility and overconsumption that characterized the perception of white women who inhabited the British West Indies in the long eighteenth century. eighteenth century women material culture Jamaica British Atlantis
24	Deep water Gulf of Mexico pore pressure estimation utilizing P-SV waves from multicomponent seismic in Atlantis Field Kao, Jeffrey Chung-chen 08 September 2010 (has links) Overpressure, or abnormally low effective pressures, is hazardous in drilling operations and construction of sea-bottom facilities in deepwater environments. Estimation of the locations of overpressure can improve safety in these operations and significantly reduce overall project costs. Propagation velocities of both seismic P and S wave are sensitive to bulk elastic parameters and density of the sediments, which can be related to porosity, pore fluid content, lithology, and effective pressures. Overpressured areas can be analyzed using 4C seismic reflection data, which includes P-P and P-SV reflections. In this thesis, the effects on compressional (P) and shear (S) wave velocities are investigated to estimate the magnitude and location of excess pore pressure utilizing Eaton’s approach for pressure prediction (Eaton, 1969). Eaton’s (1969) method relates changes in pore pressure to changes in seismic P-wave velocity. The underlying assumption of this method utilizes the ratio of observed P-wave velocity obtained from areas of both normal and abnormal pressure. This velocity ratio evaluated through an empirically determined exponent is then related to the ratio of effective stress under normal and abnormal pressure conditions. Effective stress in a normal pressured condition is greater than the effective stress value in abnormally overpressured conditions. Due to an increased sensitivity of variations in effective pressure to seismic interval velocity, Ebrom et al. (2003) employ a modified Eaton equation to incorporate the S-wave velocity in pore pressure prediction. The data preparation and subsequent observations of seismic P and S wave velocity estimates in this thesis represent a preliminary analysis for pore pressure prediction. Six 2D receiver gathers in the regional dip direction are extracted from six individual ocean-bottom 4C seismic recording nodes for P-P and P-SV velocity analysis. The receiver gathers employed have minimal pre-processing procedures applied. The main processing steps applied were: water bottom mute, 2D rotation of horizontal components to SV and SH orientation, deconvolution, and frequency filtering. Most the processing was performed in Matlab with a volume of scripts designed by research scientists from the University of Texas, Bureau of Economic Geology. In this thesis, fluid pressure prediction is estimated utilizing several 4C multicomponent ocean-bottom nodes in the Atlantis Field in deepwater Gulf of Mexico. Velocity analysis is performed through a ray tracing approach utilizing P-P and P-SV registration. A modified Eaton’s Algorithm is then used for pore pressure prediction using both P and S wave velocity values. I was able to successfully observe both compressional and shear wave velocities to sediment depths of approximately 800 m below the seafloor. Using Hamilton (1972, 1976) and Eberhart-Phillips et al. (1989) regressions as background depth dependent velocity values and well-log derived background effective pressure values from deepwater Gulf of Mexico, I am able to solve for predicted effective pressure for the study area. The results show that the Atlantis subsurface study area experiences a degree of overpressure. / text Pore pressure estimation Pressure prediction Compressional wave velocity Shear wave velocity P-SV waves Fluid pressure prediction Seismic waves Seismic velocity Multicomponent Deep water Geophysics Ocean bottom seismometer Converted waves Gulf of Mexico Atlantis
25	“One of the Most Intensely Exciting Secrets” : The Antarctic in American Literature, 1820-1849 Wijkmark, Johan January 2009 (has links) This study examines a small body of 19th-century American literature about the Antarctic: Adam Seaborn's (pseud.) Symzonia (1820), Edgar Allan Poe's "MS. Found in a Bottle" (1833) and The Narrative of Arthur Gordon Pym (1838), Peter Prospero's (pseud.) "The Atlantis" (1838-39), and James Fenimore Cooper's The Monikins (1835) and The Sea Lions (1849). These were written in a transitional phase in the history of the Antarctic. At the start of the period, the region was almost completely unknown. Towards the end of the period, however, the region had been mapped in its essence, and the existence of an Antarctic continent had been verified. For complex reasons, the region came into cultural focus in the U.S. during the 1820s to 40s, culminating in the first major American scientific expedition in 1838-42 to explore the South Seas and the Antarctic. The study is primarily historical, tracing ideas to their historical contexts in order to determine what these authors used the unknown space of the Antarctic for. These texts were written in imaginative response to contemporary notions of the Antarctic, which is reflected in the mode of representation. The literature is in the mode of speculative fiction-most of texts imagining a tropical, inhabited Antarctic-up until the region is explored, at which point it turns to realism. The texts fall into three categories: the utopian, liminal, and realistic. The utopian texts-Symzonia, The Monikins, and "The Atlantis"-are works of social criticism, using the blank space of the Antarctic to treat a diverse range of issues, including politics, evolutionary theories, race, and gender. Poe's "MS" and Pym represent the liminal category; they dramatize the anticipation of an imminent Antarctic discovery, narrating up to a point of revelation, only to stop short. The Sea Lions is the only realistic text, coming after the Antarctic is explored. Here the knowledge of the Antarctic has solidified into the environment we know today, but with religiously symbolical overtones. Adam Seaborn Symzonia James Fenimore Cooper Monikins Sea Lions Edgar Allan Poe “MS. Found in a Bottle ” Narrative of Arthur Gordon Pym Peter Prospero “The Atlantis ” Antarctic literature 19th-century American literature utopia Symmes hollow earth evolution great chain of being race Literature Litteraturvetenskap
26	The attraction of sloppy nonsense: resolving cognitive estrangement in Stargate through the technologising of mythology Whitelaw, Sandra January 2007 (has links) The thesis consists of the novel, Stargate Atlantis: Exogenesis (Whitelaw and Christensen, 2006a) and an accompanying exegesis. The novel is a stand-alone tie-in novel based on the television series Stargate Atlantis (Wright and Glassner), a spin-off series of Stargate SG-1 (Wright and Cooper) derived from the movie Stargate (Devlin and Emmerich, 1994). Set towards the end of the second season, Stargate Atlantis: Exogenesis begins with the discovery of life pods containing the original builders of Atlantis, the Ancients. The mind of one of these Ancients, Ea, escapes the pod and possesses Dr. Carson Beckett. After learning what has transpired in the 10,000 years since her confinement, the traumatised Ea releases an exogenesis machine to destroy Atlantis. Ea dies, leaving Beckett with sufficient of her memories to reveal that a second machine, on the planet Polrusso, could counter the effects of the first device. When the Atlantis team travel to Polrusso, what they discover has staggering implications not only for the future of Atlantis but for all life in the Pegasus Galaxy. The exegesis argues that both science and science fiction narrate the dissolution of ontological structures, resulting in cognitive estrangement. Fallacy writers engage in the same process and use the same themes and tools as science fiction writers to resolve cognitive estrangement: they technologise mythology. Consequently, the distinction between fact and fiction, history and myth, is blurred. The exegesis discusses cognitive estrangement, mythology, the process of technologising mythology and its function as a novum that facilitates the resolution of cognitive estrangement in both fallacy and science fiction narratives. These concepts are then considered in three Stargate tie-in novels, with particular reference to the creative work, Stargate Atlantis: Exogenesis. technologising mythology cognitive estrangement verisimilitude fallacy ontology Stargate SG-1 Stargate Atlantis media tie-ins media novels mythology science fiction television SF genre television alien gods extraterrestrial gods cults familiarisation defamiliarisation refamiliarisation Lovecraft Velikovsky Hubbard von Daniken Sitchin Campbell Devlin Emmerich
27	Margaret Cavendish and Scientific Discourse in Seventeenth-Century England Bolander, Alisa Curtis 06 May 2004 (has links) Although the natural philosophy of Margaret Cavendish is eclectic and uncustomary, it offers an important critique of contemporary scientific methods, especially mechanism and experimentalism. As presented in Observations upon Experimental Philosophy and Blazing World, Cavendish's natural philosophy incorporates rationalistic and subjective elements, urging contemporary natural philosophers to recognize that pure objectivity is unattainable through any method of inquiry and that reason is essential in making sense and use of scientific observation. In addition to its scientific implications, Cavendish's three-tiered model of matter presents interesting sociopolitical associations. Through her own use of metaphor and her theoretical fusion of matter and motion, Cavendish confronts the masculinist metaphors and implications of mechanism. Through the dramatization of her model of matter in the narrative Blazing World, Cavendish exposes the theoretical failings of contemporary methods and legitimizes her alternative to pure experimentalism. By envisioning a new planet to place the utopia of Blazing World, Cavendish actively uses the rational functions of the mind, showing that reason and rational matter are above all else in natural philosophy. Although Cavendish's scientific theory in some ways promotes the participation of women in natural philosophy, it becomes complicated as she simultaneously reinforces her social biases and urges a traditional class system with a monarchical government. Cavendish actively separates the gender constraints in philosophical inquiry from the social limitations placed on the lower classes to promote herself and other aristocratic women in the pursuit of natural philosophy, urging that the rational realm, where all sexes are equal, should govern scientific investigation. Margaret Cavendish Blazing World natural philosophy Newcastle Duchess England scientific revolution natural philosophy scientific philosophy seventeenth-century science scientific discourse metaphor mechanism mechanist experimentalism experimentalist rationalism rationalist empericism empiricist Descartes Boyle Hooke Hobbes Bacon New Atlantis women woman feminist inductive deductive model matter utopia rational eschatology eschatological gender inquiry political monarchy aristocracy monarchical aristocratic English Language and Literature

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