40 research outputs found
Infant and Maternal Reciprocity as Expressed Through Play Performance and Participation
No full textAbstract
Date Presented 3/30/2017
Infant–maternal reciprocity may be captured and represented through play. Play construction, purpose, object choice, and type were observed and coded using a retrospective analysis, demonstrating an increase in frequency and duration in most categories.
Primary Author and Speaker: Bryan Gee
Additional Authors and Speakers: Susan Kunkel
Contributing Authors: Hillary Swann, Nancy Devine, Nicholas Burgett, Nicki Aubuchon-Endsley, Michele R. Brumley, Heather Ramsdell-Hudock</jats:p
RHODIUM CARBENOID INITIATED CASCADES FOR THE SYNTHESIS OF DIVERSE MEDIUM-SIZED HETEROCYCLES
No full textMedium-sized rings (8–12 membered) are a unique class of cyclic molecules. These structures are present within a plethora of relevant natural products often possessing enhanced pharmacokinetic properties due to their dynamic structures. However, these molecules are drastically underrepresented due to the challenges associated with their construction. For this reason, more efficient methods to synthesize medium-sized rings may increase their presence in future drug scaffolds. The research presented in this thesis provides a highly convergent strategy to access diverse medium-sized heterocycles. The strategy relies on ambiphilic rhodium vinylcarbenoid precursors and dual-purpose nucleophile/electrophile synthons, which allow for smaller ring construction followed by subsequent ring expansion. The initial ring annulation occurs via a heteroatom insertion into a highly electrophilic rhodium carbenoid, derived from diazo synthons, generating a reactive zwitterionic intermediate. This intermediate then undergoes an intramolecular aldol cyclization to provide an oxy-Cope capable synthon primed for ring expansion which, upon thermal treatment, yields the highly functionalized medium-sized ring. This approach has been applied to O–H and N–H nucleophiles. Furthermore, this zwitterionic portion of the cascade was further extended to tolerate carboxylic acids, different ring sizes and the use of earth abundant iron catalysts. In addition to the synthesis of medium-sized rings, these products proved to be versatile substrates for serendipitous ring contraction cascades, leading to relevant bioactive natural product cores, such as highly functionalized quinolines and cyclopentanes in a diastereoselective manner. As a final remark, many of the products produced have been submitted for high throughput screening which has allowed for the identification of hit molecules that are now being further studied in the Sharma Research Group
A description, analysis, and evaluation of Iowa's special education instructional program funding formula "The Weighting Plan"
No full textThis study was designed to investigate Iowa's funding mechanism for special education instructional programs, the "Weighting Plan" which has been in effect since the 1975-76 school year. An operational explanation of the "Weighting Plan" is presented and includes its relationship to Iowa's overall public school finance plan, procedures for the classification of handicapped students, and the role of the School Budget Review Committee. The "Weighting Plan" is also described in standardized terminology suggested by Timothy Crowner and is evaluated based on criteria found in the literature, including; equity, comprehensiveness, compatibility with the total educational finance system, congruency with state educational policies, and lack of complexity;Pupil and finance data are presented and analyzed from 1975-76 through 1983-84. This data includes comparison with regular and special education instructional enrollments and budgets. Findings include: (1) unduplicated, certified special education instructional enrollments increased by 22.53 percent while public enrollments declined by 21.24 percent from 1975-76 through 1983-84; (2) the percentage of the total instructional budget devoted to special education increased from 8.48 percent of the total to 14.70 percent; and (3) deflated regular program budgets declined 13.91 percent while special education budgets increased 52.2 percent over the nine year period;The author suggests that Iowa's special education program delivery system needs further study. Differences in identification, weighting, and placement procedures between geographic and administrative regions of the state as defined by the boundaries of the intermediate education agencies should be investigated. If significant differences are found, their impact on the finance component of the program delivery system should be assessed. Alternative methods to deliver instructional services to mildly handicapped and "borderline" students also requires additional study may lead to a more cost-effective funding mechanism.</p
Stone fruit pollination
No full textTitle from PDF caption (viewed on August 14, 2017).Covers OCLC #1000526824, OCLC #1000525787, and OCLC #1000526289.This archived document is maintained by the State Library of Oregon as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.Mode of access: Internet from the Oregon Government Publications Collection.Text in English
Comparison of Traditional Two-Spool and Three-Spool with Vaneless Counter-Rotating Low-Pressure Turbine for Aircraft Propulsion Power Extraction
No full textabstract: In previous work, the effects of power extraction for onboard electrical equipment and flight control systems were studied to determine which turbine shaft (i.e. high power shaft vs low power shaft) is best suited for power extraction. This thesis will look into an alternative option, a three-spool design with a high-pressure turbine, low-pressure turbine, and a turbine dedicated to driving the fan. One of the three-spool turbines is designed to be a vaneless counter-rotating turbine. The off-design performance of this new design will be compared to the traditional two-spool design to determine if the additional spool is a practical alternative to current designs for high shaft horsepower extraction requirements. Upon analysis, this thesis has shown that a three-spool engine with a vaneless counter-rotating stage has worse performance characteristics than traditional two-spool designs for UAV systems.Dissertation/ThesisMasters Thesis Aerospace Engineering 201
Fermilab Neutron Therapy Facility Neutron Spectrum Determination by Threshold Foils
No full textoS(FNDA2006)041 © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence
AN EMPIRICAL ANALYSIS OF HONEYBEE POLLINATION MARKETS
No full textPollination by honeybees plays an important role in modern agriculture. Some crops are greatly dependent on honeybees (almonds, apples, avocados, blueberries, and cherries are examples) while the yields and quality of other crops are significantly enhanced by honeybee pollination. The importance of understanding pollination markets has increased recently due to changes brought on by the twin scourges of Varroa and tracheal mites. Both are infestations of feral and domestic bees that imply greater future reliance on domesticated bees at higher cost. In the United States a complex market has evolved that connects itinerant beekeepers and their bee colonies with farmers who demand their services. While the fields of entomology and crop science have developed a large literature on general principles of beekeeping and its application to particular crops, there has been little economic analysis of pollination markets. In this paper, we begin to remedy this lack of attention by analyzing an extensive panel data set of individual pollination transactions for Oregon beekeepers. The Oregon panel constitutes a considerably larger and richer data set on pollination markets than the data set examined by Cheung (1973), which is our only empirical precedent. Using cross-sectional time series regression models, we find results that are consistent with Cheungs earlier findings on the consistency of pollination market outcomes with economic theory. Fees charged for placing colonies on crops that yield marketable honey are found to be less than for crops that yield no honey income to the beekeeper: the pollination fee for crops that produce honey is about .40 per colony. With respect to honey prices, we find that a ten percent increase is estimated to decrease pollination fees by about $2.50 per colony. This estimated effect is a previously unexplored link between the now-defunct honey program and its longstanding public policy rationale, the encouragement of honeybee pollination. Insofar as the honey program successfully maintained the price of honey above levels that would otherwise have been observed, our analysis suggests that elimination of the program has resulted in a reduction in pollination services and an increase in pollination fees.Marketing,
Impact of the JOBS Act and crowdfunding on the commercial real estate market
No full textThesis (S.M. in Real Estate Development)--Massachusetts Institute of Technology, Program in Real Estate Development in Conjunction with the Center for Real Estate, 2013.This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.Cataloged from student-submitted PDF version of thesis.Includes bibliographical references (pages 145-152).This thesis systematically evaluates how rapid developments in the nascent crowdfunding industry, combined with recent regulatory changes, will impact the commercial real estate markets. The phenomenon of crowdfunding, defined as raising numerous small amounts of capital from a large number of people, or the crowd, has been accelerated by the recent passage of the Jumpstart Our Businesses Start-up Act (JOBS Act). The JOBS Act legalizes and facilitates the sale of securities used to crowdfund equity and debt investments, giving rise to a proliferation of new crowdfund entrants in various business sectors, including the commercial real estate arena. This thesis first gives a detailed analysis of the JOBS Act legislation and how it alters the current regulatory and business landscape. The focus then turns to the commercial real estate markets, tracing the evolution of commercial real estate as an institutional asset class and the influence large, institutional investors such as pension funds and real estate investment trusts exert on this market. The authors also examine the impact on the average investor and conclude that these large institutional investors have bifurcated the market, leaving the average investor unable to gain exposure to "hard" commercial real estate assets. The authors then link the research to crowdfunding, first with a chapter on the emerging and dynamic crowdfund industry in general, and then on specific commercial real estate crowdfunding sites, also discussing sites related to this sector. The authors strengthen this primary research with field investigations, conducting interviews with real estate developers, investors, and securities lawyers specializing in regulatory law. They concurrently surveyed 138 well-vetted real estate professionals (the MIT Center for Real Estate alumni). The thesis then projects the size of the potential dollar value of the commercial real estate crowdfund market based on existing value and turnover in the commercial real estate markets. The final chapter imagines what this market will look like in 2015; concluding that crowdfunding will have a profound effect on the commercial real estate market.by John R. McDonald and Bonnie L. Burgett.S.M.in Real Estate Developmen
Cultural Diversity and Public Memory in Poland and Central Europe
No full textStudent and faculty participants in the "Experiencing the New Europe" 2012 summer study abroad program will share their research on the diversity of ethnic culture in the region that lies in between Germany and Russia, a place where a history of pogroms, war, occupation and shifting borders has resulted in complex issues regarding collective identity and the preservation of public memory. The attempted erasure of Jewish and Roma people and culture, the displacement and relocation of Poles, the repatriation of once German cities as Polish, and the period of Soviet occupation are among the complex circumstances of Poland and Central European history and culture. This presentation will showcase our research and personal experiences investigating collective identity and public memory in this part of the world, and will argue for the necessity of memorializing a complicated, painful, and, in some cases, hidden past. A photography display will illustrate the multiple layers of ethnic heritage.SUNY BrockportBrockport’s Annual Diversity Conferenc
