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Analysis of Possible Hybrid Meson Decay - Jasper Bergh This research looked at data from the GlueX experiment at the Thomas Jefferson National Accelerator Facility to search for evidence of the π1(1600) particle, an exotic hybrid meson, decaying to an eta' and π0. We specifically looked into decays of the eta' to an eta, π+, and π-, with the eta decaying to 3 πo's. We successfully reconstructed an eta from the 3 πo's, and an eta' from the eta, π+, and π-. However, we did not observe the π1(1600), but, a 6:1 ratio of signal to background in the eta' mass. With more statistics this would be a viable channel to search for hybrid mesons. PIXE Analysis of Soil Samples Near the George Washington Bridge - Helen Black Heavy metal pollution is being investigated near bridges in New York City as part of an ongoing environmental pollution project at Union College. Soils collected from around the George Washington Bridge, that crosses the Hudson River, between Washington Heights in Manhattan and northern New Jersey, were investigated for the presence of heavy metal pollution using Proton Induced X-Ray Emission (PIXE) Spectroscopy. 2.2 MeV proton beams were generated in the Union College Ion-Beam Analysis Laboratory and used to bombard 21, 1-g soil pellet targets. The collected soils were sifted and pressed into targets with 10 pellets prepared from the NY side and 11 pellets prepared from the NJ side. X-ray energy spectra were generated and the results of the PIXE analysis show considerable amounts of lead present in the soil at the base of the George Washington Bridge. The lead concentration tends to decrease as the distance from the bridge increases, and this trend is present on both sides of the bridge. The highest lead concentrations were determined to be directly under the span of the bridge with 1509 +/-253 ppm seen on the New York side of the bridge and 478 +/-108 ppm on the New Jersey side of the bridge. Electron Positron Annihilation Lifetime Spectroscopy - Jacob Feinstein This poster presents an introduction to module theory,the purpose of which is to bring an advanced undergraduate student of mathematics to a level of understanding of modules and of tensor products.The thesis on which this poster is based was inspired by various resources written on each topic of interest and was written with the purpose of exploring the tensor product and some of its implications through the lens of introductory module theory. The goal of this poster isto provide a concise and clear introduction to modules and their properties, tensor products, and the dual space of a vector space. Dimensional Reduction on a Scalar Field - Daniel Resnick The introduction of a compact extra dimension into a scalar field theory introduces an infinite tower of increasing (3+1) dimensional masses, called a Kaluza-Klein tower. This process, known as "dimensional reduction,'' depends on the curvature of space-time. We present a very brief overview of the framework necessary to perform a dimensional reduction and an analysis of a trivially curved (4+1) dimensional space-time, followed by a brief discussion on more general curvature and its effects on a Kaluza-Klein tower.
Type of Resource
VideoObject
Abstract
Many of our abilities and physical features have been shaped by evolution with the ultimate goal that these changes will help increase our survival and enhance fitness. One such evolutionary adaptation is memory. Countless studies have suggested that our memory systems are particularly tuned to information that is relevant to our survival (e.g., Nairne, Thompson, & Pandeirada 2007). This finding has become known as the survival processing advantage. Another less studied processing method, which has become known as the animacy effect, states that animate objects are better recalled than inanimate objects (e.g., VanArsdall, Nairne, Pandeirada, & Blunt, 2013). The present study examined the effect that both of these processing effects would have on recall by comparing a survival related condition to a non-survival related condition. However, this study differed from other studies in the way that it contained more ecological validity. All of the previous studies on survival and animacy either presented words or images on a screen that people had to remember later on. This study was composed of a more life-like situation, induced by a realistic video of a person walking through grasslands, which contained animate and inanimate objects appearing on the screen. Based on previous findings related to both the survival and animacy processing advantages, it would be logical to expect animate objects to be recalled at higher rates than inanimates and for recall to be better in the survival group.
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DigitalDocument
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In Copyright - Educational Use Permitted
Abstract
Many of our abilities and physical features have been shaped by evolution with the ultimate goal that these changes will help increase our survival and enhance fitness. One such evolutionary adaptation is memory. Countless studies have suggested that our memory systems are particularly tuned to information that is relevant to our survival (e.g., Nairne, Thompson, & Pandeirada, 2007). This finding has become known as the survival processing advantage. Another less studied processing method, which has become known as the animacy effect, states that animate objects are better recalled than inanimate objects (e.g., VanArsdall, Nairne, Pandeirada, & Blunt, 2013). The present study examined the effect that both of these processing effects would have on recall by comparing memory for animate and inanimate objects in a survival related condition and a non-survival related condition. However, this study differed from other studies in the way that it contained more ecological validity. All of the previous studies on survival and animacy either presented words or images on a screen that people had to remember later on. This study was composed of a more life-like situation, induced by a realistic video of a person walking through grasslands, which contained animate and inanimate objects appearing on the screen. Based on previous findings related to both the survival and animacy processing advantages, it would be logical to expect animate objects to be recalled at higher rates than inanimates and for recall to be better in the survival group. The results showed that no survival effect appeared to be present, but the animacy effect was seen in both conditions and was stronger in the survival condition than in the hunting condition. The results are discussed in the context of previous findings.
Type of Resource
Thesis