233 research outputs found

    The life system of the yellow-headed fireworm, Acleris minuta (Robinson) (Lepidoptera: Tortricidae)

    Get PDF
    A resident population of the yellow-headed fireworm, Acleris minuta (Robinson) (Lepidoptera: Tortricidae), is established in the commercial nurseries of southwestern Iowa. This species sporadically reaches pest status causing considerable damage to rosaceous and ericaceous plantings;A conceptual life system model has been constructed to explain the bionomics of A. minuta populations. The conceptual model consists of an ovipositional subsystem, a developmental subsystem for larval instars 1-4, a developmental subsystem for larval instars 5, 6, & 7 under a summer and winter color morph scheme, and an overwintering subsystem;Acleris minuta is a multivoltine pest with 4 discrete generations in southwestern Iowa. The adult moths are seasonally dimorphic. Adults from the first 3 generations emerge as orange moths, while adults from the fourth generation emerge as gray moths. Orange moths are capable of mating on day 1 post emergence between the hours of 0500 - 0800 CDST. Gray moths which emerge in the fall are not capable of mating even if environmental conditions are favorable. Apparently, both males and females overwinter and mate in the spring;Larval development proceeds through 5 stadia, 6 stadia, or 7 stadia. Reduced growth rates caused by nutrient deficiencies and other adverse environmental conditions increase the frequencies of supernumerary molts. The 6 and 7 instar modes of development are more prevalent during the fourth generation;Laboratory and ecological life tables have been constructed. Ten species of parasitoids caused significant mortality during 1977 and 1978

    Manufacturing high purity chalcogenide glass

    No full text
    Chalcogenide materials are finding increasing interest as an active material in next generation optical and electronic devices. There wide range of properties, ranging from photosensitivity, ability to host rare earth ions, electrical conductivity, phase change, exceptional optical non-linearity's to name only a few are fueling this interest. Moreover, the ability to synthesize these materials in numerous forms as diverse as 2D monolayers, microspheres, optical fibres, nanowires, thin films as well as bulk glass ingots of over a kilogram in size ensures their application space is vast.We began preparation of chalcogenides, largely based on sulphides, in 1992 and since then have built up an extensive capability for their purification, synthesis and fabrication in various forms. A key aspect of this facility is the ability to process in a flowing atmosphere of hydrogen sulphide which provided the capability of synthesis from elemental, oxide or halide precursors, processing through various chemical vapour deposition reactions as well as post purification. In this talk we describe the range of materials we synthesize highlighting high purity sulphide bulk glass and transition metal di-chalcogenides for electronic applications, crystalline semiconductors for solar cell applications, low power phase change memory devices, switchable metamaterial devices as well as traditional chalcogenides glass and optical fibre

    Building resilience in teacher education: An evidenced informed framework

    Get PDF
    This paper proposes a framework for building resilience in teacher education. The framework is informed by a focused review of relevant literature to determine factors that may be addressed in teacher education to support teacher resilience and ways in which this may occur. Findings show that personal and contextual resources along with use of particular strategies all contribute to resilience outcomes and that many of these can be developed in teacher education. Using these findings, a comprehensive resilience framework is proposed with five overarching themes - understanding resilience, relationships, wellbeing, motivation and emotions. Implementation possibilities are discussed

    Feminist Perspectives on Bostock v. Clay County, Georgia

    Full text link
    This jointly-authored essay is a conversation about the Supreme Court’s recent and groundbreaking decision (Bostock v. Clayton County) that held that discrimination based on sexual orientation or gender identity is discrimination based on sex, and therefore prohibited by Title VII of the Civil Rights Act of 1964. While many scholars are writing about this case, we are doing something unique. We are analyzing this decision from feminist perspectives. We are the editors and four of the authors of a book recently published by Cambridge University Press: Feminist Judgments: Rewritten Employment Discrimination Opinions. This book contains fifteen Supreme Court and Courts of Appeals employment discrimination cases that have been rewritten using feminist perspectives, along with commentaries for each of the rewritten opinions. Two of those rewritten opinions are Courts of Appeals cases involving gender identity (Etsitty v. Utah Transit Authority) and sexual orientation (Hively v. Ivy Tech Community College). Because the book was already in production when Bostock was decided, we were unable to incorporate this momentous case into our book. And yet, given our experiences rewriting and editing opinions from feminist perspectives, we have something to say about Bostock and its significance for LGBTQ+ employment cases and employment discrimination law more broadly. Accordingly, we wrote this essay, which has three goals: first, to introduce our book; second, to analyze the Bostock case and its effect on employment discrimination law as it relates to sexual orientation and gender identity; and third, to discuss more broadly the effect of Bostock on employment discrimination jurisprudence through a feminist lens. Throughout the essay, we are attempting to answer the question of whether Bostock is a feminist opinion. Our answers are varied and even uncertain; but ultimately, we conclude that even though we, as feminists, might have written it differently, the LGBTQ+ community deserves to celebrate this momentous victory

    Treasure Valley State of the Region Report: A Preliminary View of Performance Indicators

    Get PDF
    The Treasure Valley State of the Region Report, while preliminary, describes the Boise- Nampa MSA using 49 indicators on social, economic, fiscal and environmental aspects of the region. Comparisons using the indicators are also made with peer regions in the Western United States. The rapid increase in growth in the Treasure Valley warrants a comprehensive look at the region. The Institute of Urban and Regional Planning in the College of Social Sciences and Public Affairs at Boise State University initiated the production of this report to meet this need. This report was assembled by faculty and graduate students in an effort to produce a fact based report using region wide data. It was also assembled as a starting point for understanding some of the issues and opportunities we face now and in the future. Undoubtedly the information in this report will grow and evolve as we develop a region wide system of shared data

    Stand Hazard Rating for Central Idaho Forests

    Get PDF

    The hierarchical response of human corneal collagen to load

    Get PDF
    Fibrillar collagen in the human cornea is integral to its function as a transparent lens of precise curvature, and its arrangement is now well-characterised in the literature. While there has been considerable effort to incorporate fibrillar architecture into mechanical models of the cornea, the mechanical response of corneal collagen to small applied loads is not well understood. In this study the fibrillar and molecular response to tensile load was quantified using small and wide angle X-ray scattering (SAXS/WAXS), and digital image correlation (DIC) photography was used to calculate the local strain field that gave rise to the hierarchical changes. A molecular scattering model was used to calculate the tropocollagen tilt relative to the fibril axis and changes associated with applied strain. Changes were measured in the D-period, molecular tilt and the orientation and spacing of the fibrillar and molecular networks. These measurements were summarised into hierarchical deformation mechanisms, which were found to contribute at varying strains. The change in molecular tilt is indicative of a sub-fibrillar “spring-like” deformation mechanism, which was found to account for most of the applied strain under physiological and near-physiological loads. This deformation mechanism may play an important functional role in tissues rich in fibrils of high helical tilt, such as skin and cartilage

    Supporting small and medium-sized enterprises in the educational technology sector to become more research-minded: Introduction to a small collection

    Get PDF
    The EDUCAtional Technology Exchange programme (EDUCATE) at UCL Institute of Education provides the context for this paper, which describes the programme’s vision, objectives and key activities, and sets the context for the collection of articles that follow. This university-led programme was underpinned by Luckin’s (2016) golden triangle of evidence-informed educational technology (edtech) as it sought to support 252 small and medium-sized enterprises to become more research-informed through a six-month research training and mentoring programme. The evaluation of the programme’s design-based research cycles revealed the importance of the careful choice and evolution of its boundary objects. These boundary objects, namely each enterprise’s ‘logic model’ and research proposal, facilitated meaningful conversations between the programme’s research mentors and the enterprises. These boundary objects involved several iterations, during which the language of the two communities became more aligned, helping to bridge the academic knowledge and practices with those of the enterprises

    Preparation of chalcogenide materials for next generation optoelectronic devices

    No full text
    Chalcogenide materials are finding increasing interest as an active material in next generation optical and electronic devices. There wide range of properties, ranging from photosensitivity, ability to host rare earth ions, electrical conductivity, phase change, exceptional optical non-linearities to name only a few are fueling this interest. Moreover, the ability to synthesize these materials in numerous forms as diverse as 2D monolayers, microspheres, optical fibres, nanowires, thin films as well as bulk glass ingots of over a kilogram in size ensures their application space is vast. We began preparation of chalcogenides, largely based on sulphides, in 1992 and since then have built up an extensive capability for their purification, synthesis and fabrication in various forms. A key aspect of this facility is the ability to process in a flowing atmosphere of hydrogen sulphide which provided the capability of synthesis from elemental, oxide or halide precursors, processing through various chemical vapour deposition reactions as well as post purification.In this talk we describe recent additions to the range of materials we synthesize highlighting transition metal di-chalcogenides for electronic applications, an example of which is shown below, crystalline semiconductors for solar cell applications, ion implanted thin films which provide carrier type reversal, low power phase change memory devices, switchable metamaterial devices as well as traditional chalcogenides glass and optical fibre
    corecore