563 research outputs found

    Georgia Technical College Administrators\u27 Perceptions of the Future Vocational and Academic Roles of Georgia\u27s Technical Colleges

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    In 2000 the Georgia General Assembly passed House Bill 1187 giving the Georgia Department of Technical and Adult Education (DTAE) schools the right to change their names from technical institutes to technical colleges. This event could have led to a change in the type and method of delivery of course offerings at the technical colleges in Georgia. This study was designed to examine the technical college administrators\u27 perceptions of the future vocational or academic roles of Georgia\u27s technical colleges. A 21-question survey was designed to assess the administrators\u27 perceptions of the future vocational and academic role of the 35 technical colleges in Georgia. The survey was mailed to the 70 presidents and vice presidents of instruction at each of the 35 technical colleges in Georgia. Forty-seven responses were received, representing a 67% response rate. Two items were found to be statistically significant. However, the overall results indicated that there was essentially no difference in responses between presidents and vice presidents of instruction, and between rural and urban respondents. The responses indicated an inclination for the addition of academics into the workforce training, which is currently the mission of the DTAE. Many respondents felt that a community college system would be better suited for the needs of today\u27s students

    Review of \u3cem\u3ePopulation Biology of Grasses\u3c/em\u3e

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    Population Biology of Grasses provides a wealth of knowledge beyond population biology that ecologists and ecosystem biologists will find relevant to their concerns, particularly those with an interest in grasslands. Though not limited to the Great Plains region, the book would make an excellent addition to the reference shelf of anyone interested in grasses and grassland-related ecosystems, including readers with an interest in land management and preservation. While the papers are written for different levels of readers, all provide information accessible to non-specialists

    Woody Vegetation of a Disjunct Bur Oak (Quercus macrocarpa) Forest in East-Central Nebraska

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    Woody plant composition was assessed for three tree-size classes in two ravines of Oak Glen Wildlife Management Area, a disjunct oak forest in Seward County, Nebraska, using Importance Values (IV) obtained by the Point-Quarter method. Bur oak (Quercus macrocarpa Michx.) dominated the large-size class (\u3e30 cm dbh) (IV = 258) but elms (Ulmus americana L. and U. rubra Muhl.) (IV = 130) dominated the forest in one ravine in the medium-size class (10-30cm dbh) and elm and hackberry (Celtis occidentalis L.) (IV = 114 and 27 respectively) dominated the small-size class

    INITIAL CHANGES IN SPECIES COVER FOLLOWING SAVANNA RESTORATION TREATMENTS IN WESTERN IOWA

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    Study areas in the Iowa Loess Hills were used to evaluate short-term responses of understory species to three treatment methods designed to facilitate restoration of Quercus macrocarpa savanna. Treatments included burning alone, burning with thinning, and burning with clear-cutting. Plant abundance and diversity were compared before treatment and one year after treatment. Ninety-nine plant species were identified during the study, of which 40 were new following treatment, although most of these were forest associates. Increases in diversity of understory species were observed after treatment, particularly in plots with combined burning and thinning. The forb group was most consistent in response to treatment, increasing in cover an average of9% in burn-only plots to 33% in burn-clear plots. Carex spp. and Eupatorium rugosum were the species most consistently responsive to treatments, but responses varied widely among other species. Density of canopy tree species generally did not decline with burning, indicating fire alone is ineffective in short-term removal of established trees. Although short term, our results suggest that a combination of prescribed burning and thinning of canopy trees is most likely to provide environmental conditions suitable for increasing the amount and diversity of herbaceous species comparable to a savanna ecosystem, while also increasing fine-fuel loads that will facilitate future prescribed burning

    Single Channel Testing for Characterization of the Direct Gas Cooled Reactor and the SAFE‐100 Heat Exchanger

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    Experiments have been designed to characterize the coolant gas flow in two space reactor concepts that are currently under investigation by NASA Marshall Space Flight Center and Los Alamos National Laboratory: the direct‐drive gas‐cooled reactor (DDG) and the SAFE‐100 heatpipe‐cooled reactor (HPR). For the DDG concept, initial tests have been completed to measure pressure drop versus flow rate for a prototypic core flow channel, with gas exiting to atmospheric pressure conditions. The experimental results of the completed DDG tests presented in this paper validate the predicted results to within a reasonable margin of error. These tests have resulted in a re‐design of the flow annulus to reduce the pressure drop. Subsequent tests will be conducted with the re‐designed flow channel and with the outlet pressure held at 150 psi (1 MPa). Design of a similar test for a nominal flow channel in the HPR heat exchanger (HPR‐HX) has been completed and hardware is currently being assembled for testing this channel at 150 psi. When completed, these test programs will provide the data necessary to validate calculated flow performance for these reactor concepts (pressure drop and film temperature rise). © 2004 American Institute of PhysicsPeer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/87574/2/741_1.pd

    Environmental Analysis of the Caddo River and its Tributaries: Comparison of Water Quality During 1992 with 1974-75

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    Environmental data related to water quality of the Caddo River and its tributaries were collected from March - October, 1992, and compared with data from August, 1974 - May, 1975. Bacterial, chemical and physical parameters were investigated at six river locations and thirteen tributary sites. Ammonia, nitrates, soluble phosphorus, turbidity and fecal coliform were significantly lower, and sodium and potassium were significantly higher in 1992 than during the previous study. Bacterial loading exceeded EPA criteria at some locations during both studies

    Animated PowerPoint Presentations For Teaching Operations And Supply Chain Management: Perceived Value And Electronic Exchange Of Files

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    This paper presents the innovation of sharing animated PowerPoint presentations used in teaching operations and supply chain management techniques and concepts through an international electronic exchange. The plan for the exchange is presented and discussed. The potential benefits to faculty and students of using PowerPoint animations in operations and supply chain management classes are discussed. Evidence of these benefits is also provided. Readers are provided with information about how to join the exchange

    The cost of procuring deceased donor kidneys: Evidence from OPO cost reports 2013-2017

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    Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/154616/1/ajt15669_am.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/154616/2/ajt15669.pd

    Coulomb correlation effects in zinc monochalcogenides

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    Electronic structure and band characteristics for zinc monochalcogenides with zinc-blende- and wurtzite-type structures are studied by first-principles density-functional-theory calculations with different approximations. It is shown that the local-density approximation underestimates the band gap and energy splitting between the states at the top of the valence band, misplaces the energy levels of the Zn-3d states, and overestimates the crystal-field-splitting energy. Regardless of the structure type considered, the spin-orbit-coupling energy is found to be overestimated for ZnO and underestimated for ZnS with wurtzite-type structure, and more or less correct for ZnSe and ZnTe with zinc-blende-type structure. The order of the states at the top of the valence band is found to be anomalous for ZnO in both zinc-blende- and wurtzite-type structure, but is normal for the other zinc monochalcogenides considered. It is shown that the Zn-3d electrons and their interference with the O-2p electrons are responsible for the anomalous order. The typical errors in the calculated band gaps and related parameters for ZnO originate from strong Coulomb correlations, which are found to be highly significant for this compound. The LDA+U approach is by and large found to correct the strong correlation of the Zn-3d electrons, and thus to improve the agreement with the experimentally established location of the Zn-3d levels compared with that derived from pure LDA calculations
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