4,993 research outputs found

    Recognizing College Students of Today: Generational Shifts Prompt Pedagogical Shifts

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    As educators strive to continually improve the learning potential of the students in our classrooms, it is wise to evaluate traits of the students that may influence the effectiveness of the pedagogical methods employed. To this end, this essay introduces the reader to descriptions of today’s college students that identify this cohort as unique in learning style as well as life experience from all previous generations. An assessment method was used to investigate the degree to which current students identify with these generational stereotypes. The method and results of the assessment are discussed, and suggestions for adopting new pedagogical strategies for teaching these students are offered. The essay concludes with suggestions for future research into the pedagogical methods that may better serve this cohort of students

    Atmospheric Circulation of Exoplanets

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    We survey the basic principles of atmospheric dynamics relevant to explaining existing and future observations of exoplanets, both gas giant and terrestrial. Given the paucity of data on exoplanet atmospheres, our approach is to emphasize fundamental principles and insights gained from Solar-System studies that are likely to be generalizable to exoplanets. We begin by presenting the hierarchy of basic equations used in atmospheric dynamics, including the Navier-Stokes, primitive, shallow-water, and two-dimensional nondivergent models. We then survey key concepts in atmospheric dynamics, including the importance of planetary rotation, the concept of balance, and scaling arguments to show how turbulent interactions generally produce large-scale east-west banding on rotating planets. We next turn to issues specific to giant planets, including their expected interior and atmospheric thermal structures, the implications for their wind patterns, and mechanisms to pump their east-west jets. Hot Jupiter atmospheric dynamics are given particular attention, as these close-in planets have been the subject of most of the concrete developments in the study of exoplanetary atmospheres. We then turn to the basic elements of circulation on terrestrial planets as inferred from Solar-System studies, including Hadley cells, jet streams, processes that govern the large-scale horizontal temperature contrasts, and climate, and we discuss how these insights may apply to terrestrial exoplanets. Although exoplanets surely possess a greater diversity of circulation regimes than seen on the planets in our Solar System, our guiding philosophy is that the multi-decade study of Solar-System planets reviewed here provides a foundation upon which our understanding of more exotic exoplanetary meteorology must build.Comment: In EXOPLANETS, edited by S. Seager, to be published in the Spring of 2010 in the Space Science Series of the University of Arizona Press (Tucson, AZ) (refereed; accepted for publication

    The Changes They are A-Timed: Metabolism, Endogenous Clocks, and the Timing of Puberty

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    Childhood obesity has increased dramatically over the last several decades, particularly in industrialized countries, often accompanied by acceleration of pubertal progression and associated reproductive abnormalities (Biro et al., 2006; Rosenfield et al., 2009). The timing of pubertal initiation and progression in mammals is likely influenced by nutritional and metabolic state, leading to the hypothesis that deviations from normal metabolic rate, such as those seen in obesity, may contribute to observed alterations in the rate of pubertal progression. While several recent reviews have addressed the effects of metabolic disorders on reproductive function in general, this review will explore previous and current models of pubertal timing, outlining a potential role of endogenous timing mechanisms such as cellular circadian clocks in the initiation of puberty, and how these clocks might be altered by metabolic factors. Additionally, we will examine recently elucidated neuroendocrine regulators of pubertal progression such as kisspeptin, explore models detailing how the mammalian reproductive axis is silenced during the juvenile period and reactivated at appropriate developmental times, and emphasize how metabolic dysfunction such as childhood obesity may alter timing cues that advance or delay pubertal progression, resulting in diminished reproductive capacity

    The Effects of Workforce Creativity on Earnings in U.S. Counties

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    This paper examines the effects of local workforce creativity on county-level earnings. Descriptive analysis of the data shows that most of the high-creativity counties in the United States are part of metropolitan areas, and that employee earnings are high in these places. Regression results indicate that, other things being equal, workforce creativity enhances county-level labor earnings. However, the returns to creativity that we found can be confirmed only in the urban context. An extension of the analysis suggests that the creative workforce wage premium may be capturing the effects of "technical workforce creativity" on earnings.creative economy, wages, economic development, Labor and Human Capital,

    Emotion perception in speech: Discrimination, identification, and the effects of talker and sentence variability

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    The primary goal of this project is to study the ability of adult cochlear implant users to perceive emotion through speech alone. A secondary goal of this project is to study the development of emotion perception in normal hearing children to serve as a baseline for comparing emotion perception abilities in similarly-aged children with impaired hearing

    The Prevalence of Voice Disorders in University Teaching Faculty

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    K-12 teachers are known to be at a higher than average risk for developing voice disorders. Less is known about the prevalence of voice disorders among teaching faculty in higher education. In this study, 100 university teaching faculty members were interviewed to assess possible voice problems. Information on risk factors such as demographic variables (i.e. gender and age) and health and behavioral variables (i.e. illness, use of tobacco, alcohol, and medications) was also gathered. The results were compared to published data on K-12 teachers and non-teachers. University professors reported significantly more cases of voice disorders than non-teaching professionals, but significantly fewer cases than K-12 teachers. With such an elevated prevalence, it is important to continue research on this population. Such research could assist in creating eventual preventative measures, and have a substantial effect on the productivity and quality of life of university teaching faculty

    Communication in Action: Educating Graduate Teaching Assistants in At-Risk Pedagogy

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    I begin this paper with a glimpse into the literature concerning at-risk and antiracist theory in order to understand the connections between the two bodies of literature. Next, by combining two bodies of literature, I argue for the implementation of a pedagogy of hope, culturally relevant teaching, and empowerment for students in the classroom. Finally, I outline a course for graduate teaching assistants that explores the utility of a pedagogy of hope, culturally relevant teaching, and empowerment for students in the communication classroom

    Creating a Dialogue for Change: Educating Graduate Teaching Assistants in Whiteness Studies

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    Research indicates that minority students are underrepresented in our classroom curriculum (Churchill, 1995; Delpit, 1995; Ladson-Billings, 1994). Our schools are often entrenched in the Eurocentric model of education from content to methodology. In this paper, I discuss antiracist pedagogy and whiteness studies, offer a justification for utilizing antiracist pedagogy with work in whiteness studies in the communication classroom, and provide one model for incorporating antiracist pedagogical practice with graduate teaching assistants. This essay is intended to help create a dialogue with GTAs, basic course directors, and communication faculty about antiracist practices in the communication classroom
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