4 resultados para Act of listening

em DigitalCommons@University of Nebraska - Lincoln


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President Obama signed the $787 billion economic stimulus package into law on February 17, 2009. What will this mean to individuals or to tax law for 2009? Withholding brackets will be adjusted so individuals should receive an extra $400 through their paychecks over the course of the year, this will encourage spending, since it will be a smaller amount returned each week. The Alternative Minimum Tax will be "patched." Some post-secondary education plans will be implemented and Hope Credits will be expanded. A first time home buyer credit that went into effect in 2007 has been changed, increasing the dollar limit and waiving the payback requirement unless the home is sold within 36 months of purchase.

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This study investigated the influence of top-down and bottom-up information on speech perception in complex listening environments. Specifically, the effects of listening to different types of processed speech were examined on intelligibility and on simultaneous visual-motor performance. The goal was to extend the generalizability of results in speech perception to environments outside of the laboratory. The effect of bottom-up information was evaluated with natural, cell phone and synthetic speech. The effect of simultaneous tasks was evaluated with concurrent visual-motor and memory tasks. Earlier works on the perception of speech during simultaneous visual-motor tasks have shown inconsistent results (Choi, 2004; Strayer & Johnston, 2001). In the present experiments, two dual-task paradigms were constructed in order to mimic non-laboratory listening environments. In the first two experiments, an auditory word repetition task was the primary task and a visual-motor task was the secondary task. Participants were presented with different kinds of speech in a background of multi-speaker babble and were asked to repeat the last word of every sentence while doing the simultaneous tracking task. Word accuracy and visual-motor task performance were measured. Taken together, the results of Experiments 1 and 2 showed that the intelligibility of natural speech was better than synthetic speech and that synthetic speech was better perceived than cell phone speech. The visual-motor methodology was found to demonstrate independent and supplemental information and provided a better understanding of the entire speech perception process. Experiment 3 was conducted to determine whether the automaticity of the tasks (Schneider & Shiffrin, 1977) helped to explain the results of the first two experiments. It was found that cell phone speech allowed better simultaneous pursuit rotor performance only at low intelligibility levels when participants ignored the listening task. Also, simultaneous task performance improved dramatically for natural speech when intelligibility was good. Overall, it could be concluded that knowledge of intelligibility alone is insufficient to characterize processing of different speech sources. Additional measures such as attentional demands and performance of simultaneous tasks were also important in characterizing the perception of different kinds of speech in complex listening environments.

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Since the destruction and despair caused by the dust bowl of the 1930’s, Americans and their government have taken a keen interest in natural resource conservation policy on agricultural land. The Soil Conservation and Domestic Allotment Act of 1936 was the first farm bill to include provisions that provided payments to farmers willing to employ soil conservation measures (Cain and Lovejoy, 2004). While the main purpose of this bill was to provide financial support to impoverished farmers, the fact remains that natural resource conservation was starting to become an important issue for the American public.

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Public Law 107-171 of the U.S. Farm Security and Rural Investment Act of 2002 required country-of-origin labeling (COOL) for beef, lamb, pork, fish, perishable agricultural commodities (fresh and frozen fruits and vegetables) and peanuts. While a goal of this law was to benefit domestic consumers by allowing them to make informed consumption decisions, the effects of COOL on the interest groups involved have been the subject of a heated on-going debate.