Marietta College is a co-educational liberal arts private college in historic Marietta, Ohio, USA, which was the first permanent settlement of the Northwest Territory. The school offers 44 majors along with a large number of minors, all of which are grounded in a strong liberal arts foundation. The school encompasses approximately three city blocks next to downtown Marietta and enrolls 1,417 full-time students. Wikipedia.
Rees-Miller J.,Marietta College
Journal of Pragmatics | Year: 2011
Pioneering work on compliments based on corpora collected almost 30 years ago examined the formulaic and gendered nature of compliments. However, the passage of time and questions about collection methods justify a new data collection and analysis. This article is based on two corpora of compliments among status equals collected on a small Midwestern campus in the US in 2008 and 2010. Analysis of the corpora reveals the importance of distinguishing between compliments given in unstructured versus goal-oriented settings. In unstructured settings, appearance compliments between women on apparel and hairstyle predominated and served as phatic communication that reinforced the norm of effortful attention to daily appearance. In goal-oriented settings, however, men and women gave and received compliments on an almost equal basis, with men giving and receiving slightly more compliments than women. For both men and women, compliments on performance far outnumbered all other topics in goal-oriented settings. Men's use of performance compliments on sports in unstructured settings, however, suggests that men used these types of compliments to each other to reinforce values of heterosexual masculinity. Through the types of compliments they gave, men and women revealed gendered values. © 2011 Elsevier B.V.
Rosenthal D.P.,Marietta College |
Sanger M.J.,Middle Tennessee State University
Chemistry Education Research and Practice | Year: 2013
Two groups of students were shown unnarrated versions of two different particulate-level computer animations of varying complexity depicting the oxidation-reduction reaction of aqueous silver nitrate and solid copper metal; one group saw the more simplified animation first and the more complex animation second while the other group saw these animations in the reverse order. The goal of this study is to determine how viewing one of the animations affects the participants' subsequent explanations of the other animation. Viewing the more complex animation before the more simplified animation did not affect the participants' explanations of the more simplified animation, but did lead to a slight improvement in their abilities to write a balanced chemical equation of the oxidation-reduction reaction. Viewing the more simplified animation before viewing the more complex animation improved the participants' explanations of the more complex animation with respect to the 1:1 ratio of the silver and nitrate ions, the 2:1 reacting ratio of the silver ions and the copper atoms, the electron transfer process, and writing a balanced equation for this reaction. This positive effect was attributed to the fact that the more simplified animation was easier to interpret since it depicted fewer objects on-screen moving around at the same time, and was therefore less confusing or distracting to the participants. Viewing the more simplified animation before the more complex animation negatively impacted their explanations of the source of the blue colour in the aqueous solution. This negative impact was attributed to the fact that the more simplified animation explicitly depicted the colour change and caused participants viewing the more complex animation to expect that animation to also explicitly depict this colour change. This journal is © The Royal Society of Chemistry.
Gautam T.P.,Marietta College |
Shakoor A.,Kent State University
Rock Mechanics and Rock Engineering | Year: 2016
The objective of this study was to compare the laboratory slaking behavior of common clay-bearing rocks to their slaking behavior under natural climatic conditions observed during a 1-year experimental study. Five-cycle slake durability tests were performed in the laboratory on five claystones, five mudstones, five siltstones, and five shales. Twelve replicate specimens of each of these 20 rocks were also exposed to natural climatic conditions for 12 months. After each month of exposure, one replicate specimen of each rock was removed from natural exposure and its grain size distribution was determined. The results of laboratory tests and field experiment were compared in terms of 1st, 2nd, 3rd, 4th, and 5th cycle slake durability indices (Id1, Id2, Id3, Id4, Id5), grain size distribution of slaked material, and disintegration ratio (DR), where DR is the ratio of the area under the grain size distribution curve of slaked material for a given specimen to the total area encompassing all grain size distribution curves of the specimens tested. Correlations of Id1, Id2, Id3, Id4, and Id5 with DR values for laboratory specimens exhibit R2 values of 0.87, 0.88, 0.83, 0.75, and 0.70, respectively. However, the relationship between Id2 and DR, determined after 1, 3, 6, and 12 months of natural exposure, becomes weaker with increasing time of exposure, with R2 values of 0.65, 0.63, 0.63, and 0.25, respectively. The fifth-cycle slake durability index (Id5) for laboratory tested specimens shows a better correlation with DR values for naturally exposed specimens (R2 up to 0.80). A comparison of grain size distribution curves of slaked material for laboratory specimens, after the 2nd cycle slake durability test, with those of specimens exposed to natural climatic conditions shows that the laboratory test underestimates the field durability for claystones, and overestimates it for siltstones. © 2015, Springer-Verlag Wien.
Gibb E.L.,University of Missouri-St. Louis |
Horne D.,Marietta College
Astrophysical Journal Letters | Year: 2013
T Tauri stars are low mass young stars that may serve as analogs to the early solar system. Observations of organic molecules in the protoplanetary disks surrounding T Tauri stars are important for characterizing the chemical and physical processes that lead to planet formation. Searches for undetected molecules, particularly in the inner, planet forming regions of these disks are important for testing protoplanetary disk chemical models and for understanding the evolution of volatiles through the star and planet formation process. We used NIRSPEC on Keck 2 to perform a high resolution (λ/Δλ ∼ 25,000) L-band survey of T Tauri star GV Tau N. This object is one of two in which the simple organic molecules HCN and C2 H2 have been reported in absorption in the warm molecular layer of the protoplanetary disk. In this Letter, we report the first detection of methane, CH4, in a protoplanetary disk. Specifically, we detected the ν3 band in absorption. We determined a rotational temperature of 750 ± 50 K and column density of (2.8 ± 0.2) × 1017 cm-2. Our results imply that CH4 originates in the warm molecular layer of the inner protoplanetary disk. © 2013. The American Astronomical Society. All rights reserved.
Hancock J.A.,Marietta College |
Stevens N.J.,Heritage University |
Biknevicius A.R.,Heritage University
Ibis | Year: 2014
Head-bobbing is the fore-aft movement of the head relative to the body during terrestrial locomotion in birds. It is considered to be a behaviour that helps to stabilize images on the retina during locomotion, yet some studies have suggested biomechanical links between the movements of the head and legs. This study analysed terrestrial locomotion and head-bobbing in the Elegant-crested Tinamou Eudromia elegans at a range of speeds by synchronously recording high-speed video and ground reaction forces in a laboratory setting. The results indicate that the timing of head and leg movements are dissociated from one another. Nonetheless, head and neck movements do affect stance duration, ground reaction forces and body pitch and, as a result, the movement of the centre of mass in head-bobbing birds. This study does not support the hypothesis that head-bobbing is itself constrained by terrestrial locomotion. Instead, it suggests that visual cues are the primary trigger for head-bobbing in birds, and locomotion is, in turn, constrained by a need for image stabilization and depth perception. © 2013 British Ornithologists' Union.