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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
471

Intergenerational Appeal in Luxury Product Advertising: Impacts of Brand-Gender Extension and Brand Duration

Tung, Ming-Hsuan 24 June 2011 (has links)
¡§Intergenerational (IG) appeal¡¨ is an ad focusing on the relationship between parents and children in order to enhance heritage image of a brand and facilitate the likelihood that parents introduce the brand to their sons and daughters. This study examines the application of IG appeal on advertising. An experimental study is conducted to examine the moderating effects of brand duration and (in)congruent brand-gender extension on the effect of IG appeal. The experiment in a 4 advertising appeal (IG appeal: male vs. female, non-IG appeal: male vs. female) x 2 brand duration (long vs. short) x 2 brand-gender extension (congruent vs. incongruent) factorial design is developed. A series of analysis of variance (ANOVA) are used to test the proposed hypotheses. Results of the experiment indicate that brand duration facilitates the effects of IG appeal. In addition, congruent brand extension increases the effects of IG appeal. More importantly, a three-way interaction is observed. In incongruent brand-gender extension, IG appeals used to present brands with short brand duration are more effective than Non-IG appeal. These findings should be incorporated into heritage branding when media campaign is developed to increase branding influences.
472

The long-term variation of the catches on the prey fish of Chinese white dolphins ¡]Sousa chinensis¡^at western Taiwan

Lin, Yi-Chen 15 February 2012 (has links)
Whales and dolphins, especially small cetaceans which inhabit rivers and coastal waters, are under the threats from environmental change, habitat destruction, and pollution. Since previous studies haven¡¦t deeply explored the relationship between marine mammal conservation and fishery catches, in this study, we focused on the objective is on the correlation between fishery catches and feeding sources of Chinese white dolphin. About 17 years (1993-2009) of fish catch data from fishery annual reports in the six counties (from Miaoli to Tainan) along the western coast of Taiwan, was used as the data source of the meta-analysis, which set four major prey categories of Chinese white dolphin, i.e., primary prey fish, secondary prey fish, potential prey fish and other prey fish. The study showed the following nine results. First of all, the change of total amount of fish production in six counties was changing irregularly¡Fin recent years, the amount of potential prey fish and other prey fish catches were increasing. Secondly, the decline of primary prey fish was due to the reduced production of Mugilidae . Thirdly, the secondary prey fish catch formed the major catches during 1999-2004 while Sparidae species was the dominated species. The potential prey fish amount was consistent, except in 1994 when Chanidae production was extremely high, making it the major components species. In accordance with Chinese white dolphin distribution hot spot, north hot spot primary prey fish families were Sciaenidae and Trichiuridae. In addition, the amount of south hot spot was irregularly distributing during 1999-2004. For the non-hot spot in the Changhua¡¦s coast, the prey fish production of Mugilidae was decreasing year by year and the non-hot spot in the Tainan¡¦s coast, the prey fish was mainly composed of other prey fish after 2002. However, in these 17 years, the number of fishing vessels increased, yet the total catch decreased. This may imply that the coastal fishery resources is depleted. The discussion on improvement about the fishery annual report and prey resources investigation were also made. At the last, we proposed two suggestions on the issues about hot spot management and enhancing fishery resources restoration.
473

A Geologic Characterization of the Alongshore Variability in Beach-Dune Morphology: Padre Island National Seashore, Texas

Weymer, Bradley 2012 May 1900 (has links)
The alongshore variability of beach-dune systems and the response and recovery from extreme storms remains poorly understood. The height and extent of foredunes along barrier islands varies over a range of spatial scales, implying that during extreme storms, the beach-dune system should respond in different ways depending on the elevation and volume of the dunes relative to the storm surge. The purpose of this study is to use Ground-Penetrating Radar (GPR) and vibra-cores to investigate the internal structure of small, intermediate and large dunes along a 2.5 km transect of beach in Padre Island National Seashore, TX with particular attention to storm impacts. A series of dune normal and parallel GPR profiles were collected to capture the variation in beach-dune morphology at the three sites. Site locations were chosen along a transition from dissipative to intermediate beach states. Following the Sallenger (2000) storm impact model, the small dune is defined by low-lying topography that is susceptible to overwash and inundation depending on the size of the storm surge. The large dune is characteristic of the “collision regime”, while the intermediate dune represents a transition between “overwash” and “collision regimes”, with the underlying assumption that all three dunes would be impacted by the same level of surge during a single storm event. Results from the GPR survey suggest that each site contains a bright, laterally continuous radar reflector that is interpreted with the aid of the sedimentary data as an erosional layer. Different characteristic radar facies and sequence boundaries provide evidence as to how each dune evolved through and after the storm. Results from XRF scans and grain size analysis show a direct comparison between the GPR reflectors at the storm surface and spikes in calcium counts from XRF scans to distinct changes in grain size parameters at the same depth. It is argued that the location of each shell layer corresponds to a storm surface generated during a single storm, which means it is possible to interpret different recovery mechanisms. The presence of the storm layer across the backbeach and dunes provides evidence for the height and extent of the surge during the storm event. The data suggests that the small dune was overtopped by the surge, experiencing minimal erosion and recovery. The intermediate dune was completely eroded by the surge, but showed the greatest recovery of all the dune sites. The large dune was scoured at the base with marginal impact along its crest and shows minimal recovery after the storm. These results suggest that the evolution (i.e., transgression) of a barrier island varies considerably over short distances.
474

The Level Of Awareness And Response Mechanisms Of The Actors About The Impacts Of Climate Change On Tourism, The Case Of Antalya

Zengin, Oznur 01 December 2009 (has links) (PDF)
The concept of &ldquo / climate change&rdquo / is, nowadays, seen as a global problem of the whole world. It has impacts on the economic, social, and environmental life of human beings, and also on the local life. As one of the sectors that are important for the local economies, &ldquo / tourism&rdquo / is vulnerable to climate change due to being sensitive to the factors of climate and weather. Therefore, to discuss the relation between the climate change and tourism is the aim of this thesis. In this regard, the context of &ldquo / the awareness of the actors&rdquo / about the impacts of the climate change becomes important. To evaluate the awareness of the actors, the research is focused on &ldquo / the response mechanisms&rdquo / that they develop. The hypothesis is that although the expected impact of climate change is very important, the level of awareness of the actors on this sector is rather limited and this leads to limited action to mitigate the negative impacts of climate change on tourism. In this regard, in this research, the main purpose is identified as to discuss the impacts of climate change on tourism, and to evaluate the awareness of the actors and the response mechanisms. It is researched that whether the actors are aware of the current condition about climate change and tourism and whether the response mechanisms that actors develop are effective on the impacts of climate change on tourism. As a sample in Turkey, Antalya is defined as the case study area, and the impacts of climate change on tourism are examined, and the awareness of the actors is analyzed. It is displayed, by the results of the analysis, that which type of mechanisms the actors in Antalya have trend to develop about climate change impacts.
475

Quantifying long term changes in streamflow characteristics in Texas

Garg, Gaurav 17 February 2005 (has links)
Streamflow characteristics change over time as a result of water resources development and management projects, water use, watershed land use changes, and climate changes. The main objective of this thesis is to assess the significance of the impacts of human activities such as construction of reservoirs, water supply diversions, increased water use and return flows on streamflows by the recently completed Texas WAM (Water Availability Modeling) system. The major river basins in the state of Texas were selected as suitable study basins. The particular objective is accomplished by the assessment of WAM monthly and annual naturalized and regulated flows, based on using the WRAP (Water Rights Analysis Package) model, which represents the river/reservoir management model. WAM flow frequency analysis was performed for the simulated flows. The flow ratio indices developed showed the divergence of the actual flows from their natural behavior for the entire monthly flow frequency flow spectrum ranging from minimum flows to high flows. This study describes the combined effects of reservoir construction, increased water use, water resources development projects and land use changes on the river flow regime.
476

Revised process for work zone decision-making based on quantitative performance measures

Hartmann, Thomas Wayne 10 October 2008 (has links)
Work zones create one of the most challenging environments for drivers. Implementing work zones on urban freeways creates many issues, especially with respect to mobility. Decisions made regarding the work zone should be informed by quantitative data, collected in work zones, to ensure that the mobility impacts of the work zone treatments implemented are mitigated. A new decision-making process, which addresses the shortcomings in the current decision-making processes, was developed through the course of this research. The new process incorporates a Performance Measure/Treatment matrix, which recommends multiple performance measures, each of which is chosen to measure the mobility impacts particular to a specific work zone implementation. Most importantly, the revised decision-making process incorporates a feedback loop. Quantitative data collected in work zones is analyzed after the work zone is complete, to determine the impacts specific decisions had on mobility in the work zone. The lessons learned in previous work zones are then incorporated into the decision-making process, lessening the mobility impacts of future work zones. This thesis develops the new decision-making process, and examines the issues with the application of the process.
477

Low-cost control of discontinuous systems including impacts and friction

Svahn, Fredrik January 2007 (has links)
<p>For a successful design of an engineering system it is essential to pay careful attention to its dynamic response. This is particularly true, in the case of nonlinear systems, since they can exhibit very complex dynamic behaviour, including multiple co-existing stable solutions and chaotic motions, characterized by large sensitivity to initial conditions. In some systems nonlinear characteristics are desired and designed for, but in other cases they are unwanted and can cause fatigue and failure. A type of dynamical system which is highly nonlinear is discontinuous or non-smooth systems. In this work, systems with impacts are primarily investigated, and this is a typical example of a discontinuous system. To enhance or optimize the performance of dynamical systems, some kind of control can be implemented. This thesis concerns implementation of low-cost control strategies for discontinuous systems. Low-cost control means that a minimum amount of energy is used when performing the control actions, which is a desirable situation regardless of the application. The disadvantage of such a method is that the performance might be limited as compared with a control strategy with no restrictions on energy consumption. In this work, the control objective is to enforce a continuous or discontinuous grazing bifurcation of the system, whichever is desirable. In Paper A, the dynamic response and bifurcation behaviour of an impactoscillator with dry friction is investigated. For a one-degree-of-freedom model of the system, analytical solutions are found in separate regions of state space. These are then used to perform a perturbation analysis around a grazing trajectory. Through the analysis, a condition on the parameters of the system is derived, which assures a continuous grazing bifurcation. It is also shown that the result has bearing on the dynamic response of a two-degree-of-freedom model of the system. A low-cost active control strategy for a class of impact oscillators is proposed in Paper B. The idea of the control method is to introduce small adjustments in the position of the impact surface, at discrete moments in time, to assure a continuous bifurcation. A proof is given for what control parameters assures the stabilization. In Paper C, the proposed low-cost control method is implemented in a quarter-car model of a vehicle suspension, in order to minimize impact velocities with the bumpstop in case of high amplitude excitation. It is shown that the control method is effective for harmonic road excitation.</p>
478

Economic Impacts of Production, Storage, Transport, and Conversion of Switchgrass for Cellulosic Ethanol in Tennessee

Fulton, Adam David 01 May 2010 (has links)
The goal of this study is to evaluate the introduction of cellulosic ethanol conversion plants using switchgrass as the feedstock and how it impacts the economies of two Tennessee regions. Switchgrass feedstock production, storage, and transportation costs are estimated for one plant in West Tennessee and one plant in East Tennessee. In each region, the location for a cellulosic ethanol conversion plant and the acreage required to meet a 61.8 million-gallon/year capacity are specified. The costs associated with switchgrass production and cellulosic ethanol conversion are then entered into IMPLAN to estimate the economic impacts of one cellulosic ethanol plant in each region. The key findings of the study for West Tennessee are as follows. The investment impacts of switchgrass farming are $100.4 million more in total industry output, an increase of 914 jobs, and $46.9 million more in total valued added. Investment impacts of a cellulosic ethanol conversion plant include $121.3 million increase in total industry output, an additional 653 jobs, and a $47.7 million increase in total valued added. Year-to-year operations of switchgrass farming and cellulosic ethanol conversion increase the region’s total industry output by $57.1 million, increase jobs by 296, and increase total value added by $26 million.In East Tennessee the investment impacts of switchgrass farming are $118.3 million increase in total industry output, 949 jobs created, and a $66.4 million increase in total valued added. Investment impacts of a cellulosic ethanol conversion plant include a $116.9 million increase in total industry output, an additional 765 jobs, and a $48.3 million increase in total valued added. Year-to-year operations of switchgrass farming and cellulosic ethanol conversion increase the region’s total industry output by $80.4 million, jobs by 396, and the total value added by $39.2 million.
479

Quantifying the role of agriculture and urbanization in the nitrogen cycle across Texas

Meyer, Lisa Helper 20 July 2012 (has links)
Over-enrichment of nutrients in coastal waters has been a growing problem as population growth has enhanced agricultural and industrial processes. Enhanced nitrogen (N) fluxes from land to coast continue to be the result of over fertilization and pollution deposition. This over-enrichment of nutrients has led to eutrophication and hypoxic conditions in coastal environments. This study was conducted along the Gulf of Mexico, through the state of Texas, in order to quantify all agricultural and industrial sources of N in a region which contains a large precipitation gradient, three major metropolitan areas, and one of the top livestock industries in the United States. Nitrogen inputs from fertilizer, livestock, crop fixation, and oxidized deposition from both dry and wet atmospheric processes were quantified and compiled into a Texas Anthropogenic N Budget (TX-ANB). In addition, comparisons and regional enhancements were made to the Net Anthropogenic Nitrogen Input dataset (NANI toolbox), which is a national dataset developed at Cornell University by Hong et al. [2011]. These enhancements ultimately will help understand the full pathways of anthropogenic influences on coastal systems in a regional setting. All three datasets (NANI, NANI Regional, and TX-ANB) indicate agriculture to be the primary contributor to the N cycle in Texas, with TX-ANB showing 38% of inputs from fertilizer, 37% of inputs from livestock, and 2% of inputs from legumes. N input due to atmospheric deposition of oxidized N clearly highlights urban areas, indicating a strong influence of urbanization on the N cycle due to anthropogenic impacts; 23% of N input in Texas is the result of deposition of oxidized N. Quantification of inputs spatially indicates a strong enhancement of N from human influence in the coastal plain where nutrient export is heightened by major storm events. This enhancement of N along a coastal drainage area will likely have a negative impact on downstream environments. / text
480

Monitoring Expertise: A perspective on environmental impacts monitoring in northeast British Columbia

Twerdoclib, Christine 08 September 2015 (has links)
The shale gas industry in northeast British Columbia is rapidly expanding and is promoted by the provincial government as a promising economic venture for the entire province. However, the industry is having impacts on the traditional territory of the Fort Nelson First Nation, although they have constitutionally recognized treaty rights to continue to use the land to meet their subsistence needs. I conducted this research in partnership with the Fort Nelson First Nation Department of Lands and Resources, with a focus on critically assessing the challenges they face. This research focuses on determining how the Fort Nelson First Nation can protect their treaty rights by taking control of, or inserting themselves into the data collection and monitoring activities of the shale gas industry. Utilizing a theory of knowledge politics, this research analyzes two strategies that challenge what knowledge should count, and on what terms: (1) the Fort Nelson First Nation’s participation and appropriation of the professionalized science regime and (2) the development of the Fort Nelson First Nation’s community-based monitoring program and its ability to impact decision-making. Drawing on primary research, participant observation, literature reviews and document analyses, I argue that these strategies are crucial and can create – but do not guarantee – links to affecting natural resource management decisions. / Graduate

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