Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 248 for “"experimental test"”.
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Experimental test of the effects of supportive breeding on wild populations
… of this management strategy remain relatively untested. The common house fly, Musca domestica, was used as a model to assess the relative effectiveness of supportive breeding strategies for endangered species management. Captive populations were subjected to one of two captive breeding …
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An Experimental Test of the Davis-Moore Theory of Reward Differentiation
Made available in DSpace on 2014-12-05T21:20:53Z (GMT). No. of bitstreams: 1 6200650.pdf: 4140034 bytes, checksum: 9f975149ceda22b954f4247924f804fd (MD5) Previous issue date: 1961
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An Experimental Test of Controls on Resource Exchange in an Ectomycorrhizal Mutualism
Models of resource exchange mutualisms utilize economic principles to explain how the costs and benefits of these interactions vary with environmental context. All of these models use a ratio of resource exchange (e.g., nitrogen: carbon) as the central variable, and it is unclear whether such …
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Experimental Test of Relativistic Time Dilation by Laser Spectroscopy of Fast Ions
… unaccounted line broadening in a previous test experiment. In this work this line broadening has been shown to be caused by processes changing the velocity of the ions during several to many roundtrips in the storage ring. Additionally, a method has been developed to supress this …
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Affective Intelligence, The Political Persuasion Process, And Outcome Intent: An Experimental Test
… attitudes was not transparent. The desired experimental manipulation--induced anxiety--was not unidimensional. While inductions did induce negative affect, they simultaneously induced positive affect. Within the confines of this document, this result is discussed at length and numerous …
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Design and Characterization of a Wave Energy Converter Array Experimental Test Platform
… thesis details the design and validation of a test rig for experimentally testing wave energy converter array performance in the MIT Building 48 tow tank. The test rig features a novel magnetic damper that was designed and characterized to uniquely suit the conditions of the tow tank. The final …
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Do Muds Sort? Experimental Test of a Hypothesis Key to Understanding Marine Bottom Currents
… contourites (2−10 cm/kyr) make it difficult to test this hypothesis in the field and few laboratory studies have been conducted. To test the 'sortable silt' hypothesis in the laboratory, a non-recirculating flume was constructed in which silt and clay could be deposited under a variety of …
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OPTIMAL GROUP SIZE IN HUMANS: AN EXPERIMENTAL TEST OF THE SIMPLE PER CAPITA MAXIMIZATION MODEL
The current study utilized two experiments to assess Smith's (1981) simple per capita-maximization model, which provides a quantitative framework for predicting optimal group sizes in social foraging contexts. Participants engaged in a social foraging task where they chose to forage for points …
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Functional Reciprocity and Operant Value: An Experimental Test of the Devaluation Hypothesis in Reciprocal Relations
Made available in DSpace on 2014-12-05T21:20:54Z (GMT). No. of bitstreams: 1 6202956.pdf: 6328753 bytes, checksum: 867b547fc1f44526fde3ff1a59f63a90 (MD5) Previous issue date: 1962
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Experimental test of the inverse compton effect hypothesis for the x-ray source in Scorpius
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1964.
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An Experimental Test of the Effects of Social Conflict on Posttraumatic Stress Symptoms and Alcohol Craving
<p>While substantial efforts have been devoted to understanding links between posttraumatic stress disorder (PTSD) and hazardous alcohol use, relatively little research has examined possible third factor variables that may maintain this comorbidity. Social conflict is common among people suffering …
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Encouraging professional skepticism in the industry specialization era: a dual-process model and an experimental test
… auditors’ professional judgments. As an initial test of the framework, I conduct an experiment that examines how the target of auditors’ skepticism and industry specialization jointly affect auditors’ judgments. When working inside their specialization, auditors make more automatic, intuitive …
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Design, construction and initial testing of experimental test package for convective spray cooling in terrestrial gravity conditions
… construction of an apparatus for spray cooling tests was completed to better understand the effects of spray cooling with different geometries at varied flow rates and different spray orientations. Three different geometries were studied at four different spray volumetric flow rates varying from …
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An experimental test of dual coding theory using various media and visual momentum in a multimedia environment
… multimedia environment. These media were used to test predictions based on a model of dual-coding theory (DCT) and on an engineering design principle named visual momentum. DCT is a general cognitive information processing theory. Under DCT, external stimuli are represented in either the verbal or …
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Through the looking glass: a semiotic analysis and experimental test of pace and angle effects in television advertising
… the second question through an experiment that tested for pace and angle effects on brand learning and brand attitudes. The semiotic analysis built upon the work of C.S. Peirce, Christian Metz, Gerard Genette, and Herbert Zettl. Using our normal experience of time and space as a kind of deep …
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Design and Evaluation of an Automated Experimental Test Rig for Determination of the Dynamic Characteristics of Fluid-Film Bearings
… the development and evaluation of an automated test rig for the evaluation of hydrodynamic journal bearings to provide some of the needed experimental data. This work describes the test rig in detail, including the results of experimental characterization of many of the test rig subsystems. …
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Do College Students Perceive Stigma the Same Way Experts Do? An Experimental Test of Lay Perceptions of Body-Size Stigma
… Size of stigmatized person: large, small) posttest-only experiment. Participants’ self-esteem was not impacted after viewing stigmatizing messages directed at another person. This suggests that selfesteem is more stable than some researchers indicate (Wagner, Lüdtke, and Trautwein, 2016). My …
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Evolutionary responses to global change: an experimental test of the effect of altered precipitation on hybridization rates in sunflower (Helianthus)
… we quantified hybridization rates in response to experimental manipulations of rainfall, an important dimension of global change. We used rain-out shelters in the field and quantified rates of hybridization between two congeners, Helianthus annuus (common sunflower) and H. petiolaris (prairie …
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