829 research outputs found
Reflecting on Reflective Teaching
No full text“Reflective Teaching” is a term used in teacher education to convey various meanings and purposes. In this article, Cruickshank's Reflective Teaching approach to practice teaching is critiqued, strengths of the approach are acknowledged, and modifications are proposed. Gore makes comparisons between Zeichner's critical, but school-based perspective, and the more technocratic, positivistic approach of Cruickshank. The author views Cruickshank's Reflective Teaching as viable and efficacious if modifications are made in its structure to accommodate some practical, educational, and ideological concerns
Postnatal lung function and protein permeability after fetal or maternal corticosteroids in preterm lambs
No full textRebello, Celso M., Machiko Ikegami, M. Gore Ervin, Daniel H. Polk, and Alan H. Jobe. Postnatal lung function and protein permeability after fetal or maternal corticosteroids in preterm lambs. J. Appl. Physiol. 83(1): 213–218, 1997.—We evaluated postnatal lung function and intravascular albumin loss to tissues of 123-days-gestation preterm surfactant-treated and ventilated lambs 15 h after direct fetal ( n = 8) or maternal ( n = 9) betamethasone treatment or saline placebo ( n = 9). The betamethasone-treated groups had similar increases in dynamic compliances, ventilatory efficiency indexes, and lung volumes relative to controls ( P < 0.05). The losses of125I-labeled albumin from blood, a marker of intravascular integrity, and the recoveries of125I-albumin in muscle and brain were similar for control and betamethasone-exposed lambs. Betamethasone-treated lambs had lower recoveries of125I-albumin in lung tissues and in alveolar washes than did controls ( P < 0.01). Although blood pressures were higher for the treated groups ( P< 0.05), all groups had similar blood volumes, cardiac outputs, and organ blood flows. Maternal or fetal treatment with betamethasone 15 h before preterm delivery equivalently improved postnatal lung function, reduced albumin recoveries in lungs, and increased blood pressures. However, prenatal betamethasone had no effects on the systemic intravascular losses of albumin or did not change blood volumes.</jats:p
Eleanor M. Cooper interview, 2023 November 28
No full textOral distory documenting the life of author, teacher, and activist Eleanor M. Cooper, in which Cooper discusses Chattanooga smog, the Al Gore and Bill Brock election, Chattanooga Mayor Olgiati's displacement of Black families, her time teaching English in Japan, her work with Chattanooga Venture, Children's International Summer Villages and the Ed Johnson memorial, and her novel Butterfly Dreams
Eleanor M. Cooper interview, 2023 November 28
No full textOral distory documenting the life of author, teacher, and activist Eleanor M. Cooper, in which Cooper discusses Chattanooga smog, the Al Gore and Bill Brock election, Chattanooga Mayor Olgiati's displacement of Black families, her time teaching English in Japan, her work with Chattanooga Venture, Children's International Summer Villages and the Ed Johnson memorial, and her novel Butterfly Dreams
Elevation Models for Reproducible Evaluation of Terrain Representation – Multiscale Models – Gore Range GeoTIFF
No full textMultiscale elevation models centered on Gore Range, Colorado, USA
Resolutions: 1, 5, 15, 30, 90, 250, 500, 1,000, 2,000, 2,500, and 5,000 meters, 1500 x 1,500 height samples each
File format: GeoTIFF
When using these elevation models in an academic publication, please cite the following article, which describes the process and rationale for compiling these models:
Kennelly, P. J., Patterson, T., Jenny, B., Huffman, D. P., Marston, B. E., Bell, S. and Tait, A. M. (2021). Elevation models for reproducible evaluation of terrain representation. Cartography and Geographic Information Science, 48:1, 63–77. DOI: 10.1080/15230406.2020.183085
Decolonising the spaces of geographical knowledge production: the RGS‐IBG at Kensington Gore
No full textThis is the author accepted manuscript. The final version is available from Wiley via the DOI in this recordIn this commentary we draw focus on the Royal Geographical Society (with IBG) at Lowther Lodge, Kensington Gore, to discuss the prospect of decolonising in the spaces geographical knowledge production. We propose a focus on the spaces of geography that can exclude and marginalise and serious engagement with the discomfiting question of whether violent colonial histories should be both so prominent and silent in the spaces of geographical knowledge production
Lower Bounds for Uniform Constant Depth Circuits
No full textBoolean circuits were introduced in complexity theory to provide a model for parallel computation. A big advantage of studying Boolean circuits is that they can be viewed as simple combinatorial objects and thus allow us to use many algebraic and combinatorial techniques to derive upper and lower bounds on their computational power. The relationship between Boolean circuits and the traditional Turing machine model helps us to translate the bounds obtained for circuits into bounds for the Turing machine model which is otherwise hard to analyze. In this thesis, we study the power of certain kinds of uniform constant depth circuits and provide upper and lower bounds. When we talk about Turing machines, the most important resources are time and space. The most important resources in case of Boolean circuits are size and depth. Circuits that have constant depth and polynomial size have been studied intensely in the last decade or so. The class AC0, consisting of languages accepted by constant depth, polynomial size circuits that have NOT gated, and unbounded fan-in AND and OR gates are very well understood and good lower bounds are known for it. On the other hand, the class ACC, that consists of languages accepted by constant depth, polynomial size circuits that have NOT gated, and unbounded fan-in AND, OR and MODm gates, for various moduli m, is not well understood at all. It is consistent with our knowledge that an ACC circuit family can compute the Satisfiability problem.
In this thesis, we prove that we need exponential size to compute the Permanent function using uniform circuit families that have constant depth and consist of NOT gates, and unbounded fan-in AND, OR and MOD gates. We also show that there are languages in PP and C=P that cannot be recognized by uniform ACC type circuits of subexponential size. We also study the question of finding a strong separation between NP and AC0. We show that non-relativizing proof techniques result from any answer to the question Does NP contain sets that are immune to AC0 ?." It is also shown that PPP contains sets that are immune to ACC and hence to AC0. Neil Jones introduced logspace reductions as a tool for studying the relative complexity of problems in P. He also introduced a restricted version of logspace reducibility, called logspace bounded rudimentary reductions to study small complexity classes like Dspace(log n). We show that these logspace bounded rudimentary reductions characterize uniform AC0.Technical report DCS-TR-29
Experience with the GORE EXCLUDER iliac branch endoprosthesis for common iliac artery aneurysms
No full textObjective: In this study, we analyzed the procedural success and early outcome of endovascular treatment of a multicenter cohort of patients with common iliac artery (CIA) aneurysms treated with the new GORE EXCLUDER (W. L. Gore & Associates, Flagstaff, Ariz) iliac branch endoprosthesis (IBE). Methods: A retrospective cohort analysis was performed in 13 sites in The Netherlands. Anatomic, demographic, procedural, and follow-up data were assessed from hospital records. Results: From November 2013 to December 2014, 51 CIA aneurysms were treated with an IBE in 46 patients. The median diameter of the treated aneurysm was 40.5 (range, 25.0-90.0) mm. The mean procedural time was 198 +/- 56 minutes. All but one implantation were successful; two type Ib endoleaks were noticed, resulting in a procedural success rate of 93.5%. The two type Ib endoleaks spontaneously disappeared at 30 days. There was no 30-day mortality. Ipsilateral buttock claudication was present in only two cases at 30 days and disappeared during follow-up. The incidence of reported erectile dysfunction was low and severe ischemic complications were absent. After a mean follow-up of 6 months, data on 17 treated aneurysms were available. Two showed a stable diameter, whereas 15 showed a mean decrease of 3.9 +/- 2.2 mm (P <.001). Reinterventions were performed in two patients (7.1%). The 6-month primary patency of the internal component of the IBE device was 94%. Conclusions: The use of the GORE EXCLUDER IBE device for CIA aneurysms is related to high procedural success, high patency rates, and low reintervention rates at short-term follow-up. Prospective data with longer follow-up are awaited to establish the role of the device in the treatment algorithm of CIA aneurysms
Growth Rate of Marine Microalgal Species using Sodium Bicarbonate for Biofuels
No full textWith additional research on species characteristics and continued work towards cost effective production methods, algae are viewed as a possible alternative biofuel crop to current feedstocks such as corn. Current open pond production methods involve bubbling carbon dioxide (CO_(2)) gas into the media to provide a carbon source for photosynthesis, but this can be very inefficient releasing most CO_(2) back into the atmosphere. This research began by investigating the effect of sodium bicarbonate (NaHCO_(3)) in the growth media as an alternative carbon source to bubbling CO_(2) into the cultures. The second part examined if NaHCO_(3) could act as a lipid trigger in higher (10.0 g/L) concentrations.
The microalgae species Dunaliella tertiolecta (Chlorophyta), Mayamaea spp. (Baciallariophyta) and Synechoccocus sp. (Cyanophyta) were grown with 0.0 g/L, 0.5g/L, 1.0 g/L, 2.0 g/L and 5.0 g/L dissolved NaHCO_(3) in modified seawater (f/2) media. To investigate effects of NaHCO_(3) on lipid accumulation, growth media cultures were divided into two ���lipid phase��� medias containing either 0.0g/L (non-boosted) or 10.0 g/L (boosted) NaHCO_(3) treatments. Culture densities were determined using spectrophotometry, which showed both all three species are able to successfully grow in media ameliorated with these high NaHCO_(3) concentrations.
Highest growth phase culture densities occurred in NaHCO_(3) concentrations of 2.0 g/L for D. tertiolecta and Mayamaea spp., and the 5.0 g/L treatment for Synechoccocus sp. Highest growth rates occurred in the 5.0 g/L NaHCO_(3) concentration treatments for D. tertiolecta, Mayamaea spp., and Synechoccocus sp. (0.205 d-1 ��0.010, 0.119 d-1 ��0.004, and 0.372 d-1 ��0.003 respectively). As a lipid accumulation trigger two of the three species (D. tertiolecta and Mayamaea spp) had their highest end day oil indices in a 10.0 g/L treatment. Highest oil indices occurred in boosted 5.0 g/L Dunaliella tertiolecta and 2.0 g/L Mayamaea spp. (13136 �� 895 and 62844 �� 8080 respectively (relative units)). The results obtained indicate NaHCO3 could be used as a photosynthetic carbon source for growth in all three species and a lipid trigger for D. tertiolecta and Mayamaea spp
Tafoni show postglacial and modern wind azimuths that are similar at Bunger Hills
No full textProgress Code: completedStatement: The features are not distributed evenly in the field. See the mapped data in;
Gore, D.B., Leishman, M.R. 2020. Salt, sediments and weathering environments of Bunger Hills. Antarctic Science 32(2), 138-152, and the raw data at;
https://data.aad.gov.au/metadata/records/AAS_926_Bunger_Hills_Salt_Sediment_Weathering
Start and stop dates in temporal coverage refer to the run time for the project only.<b>Purpose</b><br/>The aim was to understand whether or not current day winds are the same orientation as Holocene epoch winds. This is of interest because wind directions reflect the ice sheet geometry, and indications of stability or change to the ice sheet.Data consist of an excel spreadsheet with two worksheets. The first is the locations and measurements of orientations of elongated wind pits (tafoni) which indicate former wind directions over geomorphic time scales (probably thousands of years). Data manipulations are also given, leading to the vector mean orientation and vector magnitude. The second worksheet contains automatic weather station data from Edgeworth David in 1986 and Apfel Glacier in 2000, with wind azimuths and speeds
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