432 research outputs found

    Chapter 18: ADAPT: A View from a Distant Campus

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    My association with the ADAPT faculty brought home the idea that in order to be effective in the classroom, the instructor must ascertain the cognitive level of the students. Teaching formal concepts to concrete operational students is useless; hence, diagnosis of student weaknesses is imperative if the student is to progress up the cognitive ladder. I want to thank those in the ADAPT program for altering my view on the teaching-learning experience. Without their philosophy and their concern, I would still be teaching formal concepts to concrete students and wondering why they couldn\u27t grasp these concepts. Now I am aware of these learning differences and try to spot that person who isn’t quite ready, and whenever possible, attempt to suggest ways that the student can increase his or her cognitive abilities

    Poultry and Egg Education Project (PEEP) Curriculum Resource

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    The PEEP Curriculum for youth is one of the major outcomes associated with a USDA-AFRI project to develop a research-based educational program comprised of consumer-focused, impactful messages addressing poultry and egg safety practices. The six peer-reviewed lesson plans and objectives herein were developed directly from the research associated with this project. The lesson plans are complete with requisite background information, objectives, activities, videos, and evaluation tools. The lessons can be integrated into standing or special 4-H programs related to poultry, STEM, and health and food science. The lessons can also be integrated into school-based agricultural education programs, specifically in pathways related to animal science, food science, or biotechnology. The lessons may also be used by homeschool families or others seeking to introduce food safety in a way that is backed by science and not sensationalized reports in the media

    Agricultural Education and Mathematics Performance Among Secondary Students

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    The purpose of this study was to determine the effects of agricultural education, FFA involvement, and SAE participation on the mathematics performance of secondary students. The study explored these factors using an ex post facto research design. Respondents in the study were secondary students enrolled in Agricultural Education program (N=80) and non-agricultural education students (N=59). Results revealed that agricultural education students had a higher mathematics mean score (M=12.15, SD=4.61) than non-agricultural education students (M=10.67, SD=3.63). There were positive statistically significant differences between mathematics performance of the students and their FFA involvement as well as SAE participation

    NASP aeroservothermoelasticity studies

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    Some illustrative results obtained from work accomplished under the aerothermoelasticity work breakdown structure (WBS) element of the National Aerospace Plane (NASP) Technology Maturation Program (TMP) are presented and discussed. The objectives of the aerothermoelasticity element were to develop analytical methods applicable to aerospace plane type configurations, to conduct analytical studies to identify potential problems, to evaluate potential solutions to problems, and to provide an experimental data base to verify codes and analytical trends. Work accomplished in the three areas of experimental data base, unsteady aerodynamics, and integrated analysis methodology are described. Some of the specific topics discussed are: (1) transonic wind tunnel aeroelastic model tests of cantilever delta wing models, of an all-moveable delta-wing model, and of aileron buzz models; (2) unsteady aerodynamic theory correlation with experiment and theory improvements; and (3) integrated analysis methodology results for thermal effects on vibration, for thermal effects on flutter, and for improving aeroelastic performance by using active controls

    Science, Math, Social Studies, and Language Arts Achievement of High School Students in Complete Programs of Agriscience Education

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    The purpose of this descriptive and comparative study was to describe the academic achievement of FFA (Future Farmers of America) members in a complete program of agriscience at Jackson County Comprehensive High School (JCCHS). A secondary purpose was to compare science, math, social studies, and language arts achievement of senior agriscience students/FFA members to the achievement of all seniors at JCCHS. The findings indicate that senior agriscience students/FFA members had a higher percentage of students achieving at the highest level (Pass Plus) of Language Arts on the GHSGT (Georgia High School Graduation Test) than the remaining student population at JCCHS. Senior agriscience students/FFA members also had a higher passing rate in comparison to all seniors at JCCHS on the social studies portion of the standardized test. The researchers postulate that further research needs to be conducted to identify the correlations between agriscience participation and performance on language arts and social studies standardized tests – areas where little or no research has been conducted. The researchers also recommend that other public school systems perform similar studies to determine the impact of secondary agriscience programs on student performance

    Cooperating Teachers’ Perceptions of Pedagogical Importance, Competence, and Programmatic Need: A Frontline Assessment of Agricultural Student Teachers

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    The purpose of this descriptive study was to determine, as witnessed by cooperating teachers, what learning gaps student teachers brought to the student teaching experience “Supervision of student teachers during student teaching is a very important exercise in teacher training” (Thobega & Miller, 2008, p. 65)..Cooperating teachers spend 10 plus weeks observing student teachers of agricultural education in [state]. One may argue that the cooperating teacher is the best judge of success when looking at the student teacher. Cooperating teachers believed using computers and multimedia in classroom teaching was a strength student teachers possessed. The cooperating teachers felt that the major weaknesses included conducting parent-teacher conferences and adult programs. The findings of this study also indicate that the pre-service teachers need additional preparation in developing teaching skills in managing student behavior problems, motivating students to learn, teaching students to think critically and creatively, and conducting parent-teacher conferences

    Optical coherence tomography findings of quinine poisoning

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    John Christoforidis, Robert Ricketts, Theodore Loizos, Susie ChangThe Ohio State University College of Medicine, Columbus, OH, USAPurpose: To report a case of acute quinine poisoning, document acute and chronic macular changes with optical coherence tomography imaging and fluorescein angiography (FA), and to review the literature on ocular toxicity of quinine.Methods: A 32-year-old white female presented to our Emergency Department after ingesting over 7.5 g of quinine. She underwent a complete ophthalmologic examination, fluorescein angiography, Stratus time-domain optical coherence tomography (OCT), and electroretinography at 72 hours and 15 months postingestion. Stratus time-domain and Cirrus spectral-domain OCT, fundus autofluorescence, and FA were obtained at 28 months postingestion.Results: Fluorescein angiography at 72 hours postingestion revealed normal filling times and vasculature. OCT showed marked thickening of the inner retina bilaterally. At 15 and 28 months follow-up, fundus photography and fluorescein angiography demonstrated optic nerve pallor, severely attenuated retinal vessels while OCT showed inner retinal atrophy. Fundus autofluorescence did not reveal any retinal pigmentary abnormalities.Conclusions: Quinine toxicity as seen by OCT reveals increased thickness with inner retinal hyperreflectivity acutely with development of significant retinal atrophy in the long-term. Fundus autofluorescence reveals an intact retinal pigment epithelial layer at 28 months. These findings suggest that quinine poisoning may produce a direct toxic effect on the inner retina in the acute phase resulting in long-term retinal atrophy.Keywords: retinal, optical coherence tomography, quinine toxicity&nbsp

    Molecular genetic biomarkers of reproductive fitness in earthworms

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    When ecotoxicologists assess the environmental impact of pollution they must pose a fundamental question. That is, is the toxicological data produced from any experiment ecologically relevant It has long been thought that a measure of survival of any organism is not sufficient to predict potential population effects. A more sensitive method is the measurement of sub-lethal endpoints, such as growth and reproduction. However, measurement of these parameters may not give an 'early warning' of the impact of complex pollutants within any ecosystem. Therefore, so-called biomarkers have been developed to fill this void. Biomarkers can be used at a number of organisational levels e.g. cellular, protein or DNA, but they all have the sensitivity to act as predictive tools in ecotoxicology and risk assessment. In the past twenty years earthworms have become model organisms in terrestrial ecotoxicology. This is mainly due to the critical role they play within the soil ecosystem in most parts of the world. Therefore the present study utilises three earthworm species (Eisenia fetida, Eisenia andrei and Lumbricus rubellus) to identify, characterise and validate molecular genetic biomarkers of reproduction. To isolate potential reproductive genes a subtractive library was created from the anterior and posterior segments of Lumbricus rubellus. A number of potential biomarker candidate genes were identified, but a putative sperm-specific antigen warranted special attention. The gene fragment of this putative sperm antigen was identified in all three earthworm species used in the study and its potential as a biomarker is discussed. Annetocin has previously been characterised as a member of the mammalian vasopressin/oxytocin superfamily of neuropeptides and has been shown to induce egg-laying behaviours in Eisenia fetida. The annetocin gene was isolated from the three earthworm species and shown to be expressed in the reproductive segments of Eisenia fetida. The expression levels of the annetocin gene were determined in earthworms exposed to metalliferous soils both in laboratory and semi-field exposures using quantitative PCR. A decrease in annetocin gene expression levels correlated with a similar decrease in cocoon production rates of Eisenia fetida after metal exposure. Upon exposure to the mammalian steroid hormones, 17/3-oestradiol and testosterone along with the synthetic oestrogen 17a-ethynylestradiol, annetocin gene expression levels in Eisenia andrei were elevated in some cases, suggesting a role for oestrogens in earthworm reproduction. Eisenia andrei were also exposed to bisphenol A and nonylphenol in artificial soils and annetocin gene expression was determined. Although toxic to Eisenia andrei these two (weakly oestrogenic) compounds did not affect annetocin gene expression. These data strongly suggest that annetocin plays a critical role in earthworm reproduction and that oestrogens may modulate the expression of this gene. The annetocin genomic structure was determined and three oestrogen-responsive elements were identified within the promoter of the gene in Eisenia fetida. What is more, the genomic structure of annetocin conformed to the three exon, two intron model of vasopressin/oxytocin superfamily neuropeptides.EThOS - Electronic Theses Online ServiceGBUnited Kingdo

    The theory of semi-simplicial complexes

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