46,479 research outputs found

    Using Technology to Open Storytelling Doors

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    In a University of Minnesota College of Liberal Arts online spotlight on teaching, I\u27m deemed to be The Open-Door Storyteller. The article notes: One of Jacobs\u27 goals is to teach his students media literacy—analyzing critically what they read, hear, and see—without reducing their enjoyment of the media. He encourages his students to learn how to tell their own stories as a way of influencing how the media in turn portrays them. Technology has been a key part of this process ever since I first stepped into the classroom as an instructor in my third year of graduate school, in 1995. I\u27ll still be using technology in the classroom when I retire, around 2035..

    Learning and Living Difference That Makes A Difference: Postmodern Theory & Multicultural Education

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    The application of postmodern theory to a transformative understanding of multiculturalism can make a difference. Multicentered culture, antiessentialist race consciousness, and political equity—aspects of a transformative multiculturalism put forward in 1996 by Newfield and Gordon—can be juxtaposed with elements of a postmodern theorization of society as a consumer-driven economy saturated with multiple mediated unstable, fragmented, and evolving discourses and cultural interaction. This theoretical construct can be illustrated with research data from college classrooms and specifically an analysis of the television show The X-Files. This analysis shows how a discussion of whiteness creates larger discussion of transformative multiculturalism in which difference makes a difference. Moreover, a postmodern transformative multiculturalism sees universities as ideological sites in the production and reproduction of hegemony

    Using Lower-Division Developmental Education Students as Teaching Assistants

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    There has been little research on the experiences of undergraduate teaching assistants, and this small body of information is usually tightly focused on traditional disciplinary concerns like sociology, psychology, and communications. Additionally, undergraduate teaching assistant research tends to focus on upper-division students. This article explores the benefits and drawbacks of using lower-division developmental education students as teaching assistants in developmental social science courses. Included are comments from students enrolled in a course staffed by a sophomore as the teaching assistant. Employing developmental education students as teaching assistants can be beneficial to instructors, students, and the teaching assistants themselves

    The Legend of Sleepy Hollow: An Ambiguous Ghost Tale

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    Abstrac

    Spray combustion under oscillatory pressure conditions

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    The performance and stability of liquid rocket engines is often argued to be significantly impacted by atomization and droplet vaporization processes. In particular, combustion instability phenomena may result from the interactions between the oscillating pressure field present in the rocket combustor and the fuel and oxidizer injection process. Few studies have been conducted to examine the effects of oscillating pressure fields on spray formation and its evolution under rocket engine conditions. The pressure study is intended to address the need for such studies. In particular, two potentially important phenomena are addressed in the present effort. The first involves the enhancement of the atomization process for a liquid jet subjected to an oscillating pressure field of known frequency and amplitude. The objective of this part of the study is to examine the coupling between the pressure field and or the resulting periodically perturbed velocity field on the breakup of the liquid jet. In particular, transverse mode oscillations are of interest since such modes are considered of primary importance in combustion instability phenomena. The second aspect of the project involves the effects of an oscillating pressure on droplet coagulation and secondary atomization. The objective of this study is to examine the conditions under which phenomena following the atomization process are affected by perturbations to the pressure or velocity fields. Both coagulation and represent a coupling mechanism between the pressure field and the energy release process in rocket combustors. It is precisely this coupling which drives combustion instability phenomena. Consequently, the present effort is intended to provide the fundamental insights needed to evaluate these processes as important mechanisms in liquid rocket instability phenomena

    Densitometer Patent

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    Measuring density of single and two-phase cryogenic fluids in rocket fuel tank

    Fibrational induction rules for initial algebras

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    This paper provides an induction rule that can be used to prove properties of data structures whose types are inductive, i.e., are carriers of initial algebras of functors. Our results are semantic in nature and are inspired by Hermida and Jacobs’ elegant algebraic formulation of induction for polynomial data types. Our contribution is to derive, under slightly different assumptions, an induction rule that is generic over all inductive types, polynomial or not. Our induction rule is generic over the kinds of properties to be proved as well: like Hermida and Jacobs, we work in a general fibrational setting and so can accommodate very general notions of properties on inductive types rather than just those of particular syntactic forms. We establish the correctness of our generic induction rule by reducing induction to iteration. We show how our rule can be instantiated to give induction rules for the data types of rose trees, finite hereditary sets, and hyperfunctions. The former lies outside the scope of Hermida and Jacobs’ work because it is not polynomial; as far as we are aware, no induction rules have been known to exist for the latter two in a general fibrational framework. Our instantiation for hyperfunctions underscores the value of working in the general fibrational setting since this data type cannot be interpreted as a set

    Helping Kindergarteners Make Sense of Numbers to 100

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    The authors share what was learned about kindergarteners\u27 abilities to make sense of numbers to 100 when one of the authors, Linda Jaslow, took over a kindergarten class from February through the end of the school year. Through examples of how she engaged her students in nine weeks of problem solving and discussions focused on making sense of the number system, we provide evidence that the children grew substantially in their ability to count and show understanding when counting by 10\u27s and using 10\u27s during problem solving. Suggestions for tasks to promote continued growth are also provided. Throughout this teaching experience, Mrs. Jaslow was reminded of the complexity of making sense of our number system, and this article showcases her instructional decision making that was based on inquiry into children\u27s thinking. By valuing children\u27s existing ideas, Mrs. Jaslow could use that thinking to help guide her instruction
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