3,753 research outputs found

    Five-Year Response of Spontaneous Vegetation to Removal of Invasive Amur Bush Honeysuckle Along an Urban Creek

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    Non-native invasive species have major impacts on landscapes worldwide, but their effects in urban areas are not well documented. We quantified the response of naturally regenerating vegetation along an urban creek to removal of the invasive shrub Lonicera maackii (Amur Bush Honeysuckle). Over the 5-year study, species richness more than doubled. Most new plants were native, disturbance-adapted, early successional species. Trend analysis of function traits revealed annuals that rely on seed dispersal by wind or externally on animals were significantly overrepresented among new plants in comparison to their proportion in the countywide species pool. Increased species richness did not result in improved habitat quality, as indicated by Floristic Quality Assessment. Eight new invasive species appeared over the course of the study. Active management of this site may be needed in perpetuit

    Ten Bee Species New to Green Roofs in the Chicago Area

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    Green roofs increasingly provide habitat for many insects in urban environments. Pollinators such as bees may utilize foraging and nesting resources provided by green roofs but few studies have documented which species occur in these novel habitats. This study identified bees from 26 species, 11 genera and 5 families collected from 7 green roofs using pan trapping methods over 2 years. Ten of these species have not previously been recorded on green roofs in the Chicago region. Although the majority of bee species collected were solitary, soil-nesting, and native to Illinois, the proportion of exotic species was high compared to previous collections from Chicago area green roofs and urban parks. Urban green roofs may enhance populations of both native and exotic bees, but their ability to support the same range of native diversity recorded from other urban habitats requires further investigation

    Defensive Shootings and Error Risk: A Collateral Cost of Changing Gun Laws?

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    In the continuing national debate about the scope of the Second Amendment right to keep and bear arms,\u27 much conversation revolves around the relationship between private gun ownership and crime rates. Opponents and advocates of gun-control laws support their positions with frequent citation to evidence of a correlation (or lack thereof) between laws that allow individuals to carry and use guns in self-defense and crime rates. The effect of gun laws on crime rates, however, is only one of the implications gun control laws have for our criminal justice system. While crime rates are certainly a valuable metric with which to analyze the effectiveness of gun-control laws, they tell only part of the story. Many of the most important rules in our justice system, such as the presumption of innocence, the reasonable doubt standard, and self-defense protections, are based not on raw empirics but on moral value judgments about the type of error society is willing to risk. A more complete analysis must consider not only the empirical effect of gun laws on crime rates, but also the systematic theoretical implications of self-defense rules-of which gun laws are a significant part-on error risk in the justice system

    Exploring attitudes towards a randomised controlled trial of venous access devices – a nested pre-trial qualitative study

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    Purpose: This pre-trial qualitative research study was carried out to explore patient and clinical staff attitudes to central venous access devices (CVADs). In addition, views about participation in a randomised controlled trial (RCT) were explored with the aim of maximising recruitment to an imminent RCT of three CVADs. Methods: Three patient focus groups (each comprising three patients) and 23 interviews with clinical staff were conducted. Interviews and focus group discussions were digitally recorded, transcribed verbatim, anonymised, uploaded to the QSR NVivo10 qualitative software programme and thematically analysed. Results: Analysis of focus group interviews revealed the added challenges that a CVAD poses to patients with cancer. Four key themes emerged: continuity of daily life, pain and discomfort, stigma (a mark of disgrace associated with certain conditions) and self-preservation. The findings show the impact of a CVAD on patients’ ability to manage their condition. Clinical staff interviews highlighted several potential barriers to recruitment; a lack of equipoise (genuine clinical uncertainty as to which intervention is the most beneficial), concerns about the logistics of device insertion and a perceived requirement for education and training. Conclusions: This qualitative study raises awareness of key areas of concern to patients who need a CVAD for chemotherapy delivery. It was identified that there is a need for clearer patient information around CVADs. Additionally it allows investigators to identify barriers to recruitment in a timely manner in order to minimise the potential for conflict between the roles of carer and researcher and consequently, maximise recruitment to the RCT

    Consumer Protection Rights and "Free" Digital Content

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    Discusses the proposals of the draft Directive on contracts for the supply of digital content that extend consumer rights and remedies to supplies of digital content made in exchange for the consumer's data rather than money. Assesses whether the provision of data should be treated as a form of consideration. Considers the business implications of imposing the same consumer protection duties on the suppliers of "free" and paid-for services

    Family law update: current issues in proprietary estoppel - Part 2

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    Natalie Gibson and Rebecca Kelly comment on (1) Davies (2) Davies v Davies [2016] EWCA Civ 463 and the doctrine of proprietary estoppel relating to parents and their daughte

    Chapter 12- Conducting Guided, Virtual Homework Sessions to Support Student Success During COVID Campus Closures

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    College students have long used community-based practices such as study halls, review sessions, study groups, homework buddies, and the like as academic strategies to support their learning (Hogan, 1999; Madland & Richards, 2019; Thalluri et al., 2014). With increased access to online conferencing capabilities, working in community has been adapted by faculty who have used the technology to participate in virtual write-on-sites, writing retreats and writing sprints. Thus, it is no surprise that both faculty and learning centers saw the potential for creating virtual spaces for students to work together
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