326 research outputs found
Muriel Lederman honored as associate professor emeritus
No full textMuriel Lederman, of Blacksburg, associate professor of biology in the College of Science at Virginia Tech, was conferred with the title "associate professor emeritus" by the Virginia Tech Board of Visitors during the board's quarterly meeting Monday, Aug. 23
Reaching for the American Dream: Economic Policy for the Future
No full textLeague of Women Voters production \u27Reaching for the American Dream: Economic Policy for the Future\u27 as part of its \u27Understanding U.S. Economic Policy\u27 project. Topics discussed include the United States economy and planning for the future; the federal budget deficit; and how citizens can participate in economic decisions. Dr. Susan S. Lederman, Chair of the League of Women Voters Education Fund concludes the program; Reaching for the American Dream: Economic Policy for the Future League of Women Voters Education Fund 18:00; Restricted use
Transmogri-factory
No full text1 sheet (enclosing 5 volumes) : illustrations ; 47 x 36 cm folded to 23 x 18 cm
Buggy night / Judy Hoffman
House of beauty / Harvey Redding
Happersett accordion / Susan Happersett
Divine diviner / Stephanie Brody Lederman
Transmogri-factory / Chris Collicott
Artist's book consisting of folded sheet with the work of five artists attached thereto.
Number 62 of 150 copies in the edition.
Call number: SPL N7433.3 .P87 200
Stop the Century--We’re Not Ready!
No full textThe distinguished Nobel Laureate and contributing author of the newly released Science Literacy for the Twenty-first Century and author of The God Particle will explore how science and technology serve as the drivers for 21st Century changes in our social, political and economic lives. Profits and conveniences made by deployment of new knowledge force the issue of whether such deployment is in society’s best long-term interest. The need grows exponentially for the voting public in our democratic society to play a significant role in making decisions. Lederman discusses whether we can devise a feasible educational system that will produce high school graduates with a sense of how science works, as well as whether voter-citizens can employ a “science way of thinking” in order to participate in issues affecting their lives and those of their children.
The lecture will be followed by a proclamation from Mike McCoy, Chairman of the Kane County Board: The Kane County “Dr. Leon Lederman Day” and a book launch, refreshments and signing of Science Literacy for the Twenty-first Century
Haptic Integration of Object Properties: Texture, Hardness, and Planar Contour
No full textPlanar objects varying in shape, texture, and hardness were classified under haptic exploration. Classes were defined by values on one dimension, or redundantly, by two or three dimensions. Response times and exploratory procedures (Lederman & Klatzky, 1987) were recorded. Experiment 1 showed that a second dimension speeded responses for all combinations (redundancy gain), but a third dimension produced no further effect. In Experiments 2 and 3, classification trials began with two redundant dimensions, and subsequently one was withdrawn (held constant). When texture and hardness varied redundantly, withdrawal of either increased response time—even when subjects were initially instructed to focus on one dimension. Joint exploration for texture and hardness dominated whenever the two varied redundantly and persisted despite withdrawal. Redundancy gains (Experiment 1), but not substantial withdrawal effects (Experiments 2 and 3), were observed for combinations of texture or hardness with planar contour, indicating less integration than between substance dimensions. Compatibility of exploratory procedures appears to constrain dimensional integration
Haptic identification of common objects: effects of constraining the manual exploration process.
No full textIn this article, we address the effects on haptic recognition of common objects when manual exploration is constrained by using two kinds of rigid links--sheaths (Experiment 1A) and probes (Experiments 1B and 2). The collective effects of five different constraints are considered, including three from previous research (i.e., reducing the number of end effectors, wearing a compliant finger cover, and splinting the fingers; Klatzky, Loomis, Lederman, Wake, & Fujita, 1993) and from two current constraints (i.e., wearing a rigid finger sheath and using a rigid probe). The resulting impairments are interpreted in terms of the loss of somatosensory information from cutaneous and/or kinesthetic inputs. In addition, we relate the results to the design of haptic interfaces for teleoperation and virtual environments, which share some of the same reduction of sensory cues that we have produced experimentally.</p
The business of product innovation : international empirical evidence
No full textIt is so widely recognized that innovation is a key driver of economic growth that it is cliché to say so. This article studies product innovation by firms with data from 68 countries, covering more than 25,000 firms in eight manufacturing sectors. The author assesses the predictions of inter-disciplinary research on innovation by firms. The econometric evidence suggests that globalization and local knowledge increase the likelihood that firms will introduce new products. By contrast, domestic regulatory impediments to competition are not robustly correlated with product innovation.E-Business,Innovation,Microfinance,Education for Development (superceded),Statistical&Mathematical Sciences
NAFTA, Trade, and Development
No full textThe post-Keynesian tradition contains two different models of long-run growth in open economies -- the model of export-led cumulative causation (ELCC) originally conceived by Nicholas Kaldor and the model of balance-of-payments-constrained growth (BPCG) developed by A.P. Thirlwall. These models diverge significantly in their core underlying assumptions. For example, they disagree about whether long-term gains in relative price competitiveness are possible and whether import demand constrains long-run growth. The two modeling approaches also yield conflicting policy implications. For example, some ELCC models imply that a domestic demand stimulus can boost long-run growth by sparking a virtuous circle of cumulative causation (including an endogenous increase in productivity growth), while most BPCG models imply that only policies that raise the income elasticity of export demand or lower the income elasticity of import demand can permit faster growth in the long run. The fact that both models have found econometric support suggests that each contains empirically supported elements, but the tests that have been conducted to date have not had sufficient power to distinguish between them. This paper will present both models in a common analytical framework to compare their theoretical differences and policy implications. The paper will argue that a generalized BPCG model that allows for financial flows and relative price effects can incorporate the cumulative causation feedbacks from the ELCC approach while also imposing the balance of payments equilibrium condition that is missing from the latter. The paper will also explore under what conditions different versions of the models apply.
Teachers' preparation and perspectives toward native language use in the classroom
No full textThis file was last viewed in Adobe Reader X.This ethnographic case study investigates teacher preparation in educating English language
learners (ELLs) and how it relates to perspectives and attitudes toward the use of students' native language (L1) in the classroom for academic and social purposes. The nine participants consisted of preschool through fifth grade teachers including two music teachers. Each
completed a survey to report their perspectives toward the maintenance of students' native
language. Teachers rated the level of responsibility they feel they have for maintaining students'
native language in addition to responding to statements about their practical uses of students' L1 in the classroom. Survey responses were reviewed to look for underlying trends in perspectives. Subsequently, all participants were interviewed individually to discuss their preparation for working with ELLs as well as to elaborate on their survey responses. Results of this case study demonstrate a favorable attitude of mainstream teachers toward using students' native language in the classroom, despite a lack of preparation or training in the education of ELLs and a vague vision from the administration regarding culturally relevant practices. It was found that teachers'
attitudes were influenced by family background, self-efficacy, and views on bilingual education
as it impacts teacher allocations across the district. Despite participants' support for L1 in the classroom, this study found that most teachers did not put this ideology into practice in their own classroom. This study mirrors other research demonstrating a need for improved professional development for mainstream teachers
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