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.
Results
Showing 1 to 20 of 47 for “"Take-all"”.
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PCR-Based Test for Differentiating Varieties of <i>Gaeumannomyces graminis</i>, The Take-All Pathogens
Take-all is the most devastating root disease of wheat worldwide. The causal agent is <I>Gaeumannomyces</I> <I>graminis</I> (Sacc.) Arx & Olivier. Based on morphological characteristics and host ranges, three varieties of <I>G</I>. <I>graminis</I> have been recognized. <I>G</I>. <I>graminis</I> …
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Wheat Take-All: Quantification of Resistance and Pseudomonad Suppression and the Potential for Their Interaction
A new 10-day in vitro assay was developed to study the dynamic colonization of Ggt-infected roots by both antagonistic and non-antagonistic bacteria. Pseudomonas fluorescens (strain 2-79), as antagonist of Ggt and Bacillus megaterium (strain B153-2-2), a non-antagonist, were used to determine if …
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Take-all in Wheat: PCR Identification of the Pathogen and the Interactions Amongst Potential Biological Control Agents
… var. triciti (Ggt)</i>, the causal agent of take-all in wheat, is difficult to detect accurately and rapidly due to its similarity to fungi in the Gaeumannomyces-Phialophora complex. My objectives are to detect the fungus in infested plants and soil, and to predict effective combinations of …
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The creative destruction of the "winner-take-all" society? Property rights and the economics of the long tail in the music industry
… digital revolution. The Internet and MP3s have allowed for illegal downloading and file sharing. For producers, revenue streams have run dry because consumers can get their music for free. The old property rights regime has been eroded for incumbents and a market failure is imminent. But the …
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Evaluation of Agents for the Suppression of Take-all of Wheat in Virginia in Greenhouse and Field Studies, and Characterization of Isolates of Gaeumannomyces graminis varieties
Take-all of wheat, caused by Gaeumannomyces graminis var. tritici (Ggt ) is a problem wherever wheat is grown. Crop rotation is currently the only method for control. Our objectives were to develop a greenhouse bioassay and to evaluate the efficacy of mineral, chemical, and or biological agents for …
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Effects of temperature on wheat-pathogen interactions
… were grown under different thermoperiods and challenged with different types of pathogens; Results showed that resistance to multiple pathogens in one cultivar Claire was enhanced under variable temperatures, compared to constant temperatures. Taken together, the research presented revealed that …
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Modeling the role of the basal ganglia in motor control and motor programming
… proposes a unified functional model of the BG, called multi-input multi-output adaptive switching (MIMOAS) model that attempts to account for the role of the BG in both higher-level rote behavior and lower-level motor control. In the model, BG circuitry effectively implements a large set of …
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The Impact of US Foreign Policy on the Colombian Conflicts
… however has not lost interest in their strongest ally in Latin America, and introduced “Plan Colombia” in 1999, in order to fight the guerrillas and other paramilitaries groups. The aim of “Plan Colombia” was to fight the violence and the growing of the coca plant. The results of implementing this …
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The power of randomized algorithms : from numerical linear algebra to biological systems
… of randomized algorithms can be used more generally as a tool to understand how complexity emerges from low-level stochastic behavior in biological systems. We study population density- estimation in ant colonies, which is a key primitive in social decision-making and task allocation. We define …
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Thresholds in Space and Time
… combination of the two, but whatever form they take, all thresholds can be said to be mediators of our movement from one spatial status to another. Inside to outside, public to private, here to there. Too often our buildings relegate these changes to doors or openings that have little connection …
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The Lottery Colonel Blotto Game with Draws
… or ties, moving beyond the traditional winner-take-all framework. The inclusion of the possibility of a draw allows for a more realistic depiction of contests where players may arbitrarily split the value of a battlefield in the absence of a decisive victory. Our model is characterized by the …
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Dynamics and learning in recurrent neural networks
… second one is a generalized network of Winner-Take-All; the third one is a model for integration in head-direction systems. One distinctive feature of neural systems is the ability of learning. The other part of my thesis is on learning in biologically motivated neural networks. Specifically, I …
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Split Ends
… up creates a silhouetted version of my hand. I take all the steps to get the right focus and exposure. I place the film holder in the camera and pull out the dark slide. Then comes the element of chance; the part that makes shooting film magical. Between the subject and the film’s emulsion are …
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Public participation in health care decision-making : the Canadian experience
… by their provincial and federal governments to take part in the health policy process at many decision levels. They have been offered a seat at the decision-making table. This invitation raises an important issue. Is the public really permitted to take all the room that governments claim they …
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A Synthetic Spring
… iv. In the greater scope, the event will technically begin with the use of promotion several months before the actual event. The promotion will take all shapes and forms, both digitally and physically. We will lure spectators visually, sonically, socially, and psychologically, by creating hype, …
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A Synthetic Spring
… iv. In the greater scope, the event will technically begin with the use of promotion several months before the actual event. The promotion will take all shapes and forms, both digitally and physically. We will lure spectators visually, sonically, socially, and psychologically, by creating hype, …
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Computing Equilibria in Colonel Blotto by Applying Counterfactual Regret Minimization Using a Layered Graph Representation
… battlefields, and it is scored by a winner-take-all rule. Colonel Blotto has historically been difficult to solve due to its immense action space. [2] was the first to formulate the game in a linear program and later, [3] was able to greatly improve their formulation in practice by …
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The synthetic student : a machine learning model to simulate MOOC data
It's now possible to take all of your favorite courses online. With growing popularity, Massive Open Online Courses (MOOCs) offer a learning opportunity to anyone with a computer - as well as an opportunity for researchers to investigate student learning through the accumulation of data about …
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An Empirical Test of the Relative State Model with Texas Holdem Poker Scenarios
This study empirically tested predictions from a new evolutionary model of risky decision-making, the relative state model (RSM), using Texas holdem poker scenarios. The RSM suggests that risk taking is a product of one of two interacting pathways—need (desperation) and ability (affordance). …
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