Hybrid Natural Inflation

We construct two simple effective field theory versions of {\it Hybrid Natural Inflation (HNI)} that illustrate the range of its phenomenological implications. The resulting inflationary sector potential, $V=\Delta^4(1+a\cos(\phi/f))$, arises naturally, with the inflaton field a pseudo-Nambu-Goldstone boson. The end of inflation is triggered by a waterfall field and the conditions for this to happen are determined. Also of interest is the fact that the slow-roll parameter $\epsilon$ (and hence the tensor $r$) is a non-monotonic function of the field with a maximum where observables take universal values that determines the maximum possible tensor to scalar ratio $r$. In one of the models the inflationary scale can be as low as the electroweak scale. We explore in detail the associated HNI phenomenology, taking account of the constraints from Black Hole production, and perform a detailed fit to the Planck 2015 temperature and polarisation data.Comment: V2: 19 pages, 2 figures, 1 table. Extended discussions and new references added. Version accepted for publication in JHE

BEST PRACTICE IN SPEECH-LANGUAGE PATHOLOGY IN LANGUAGE AND COGNITIVE-COMMUNICATION POST STROKE

Introduction: With 21% to 38% of individuals experiencing aphasia post stroke, language and communication impairments are major issues for clinicians working with stroke patients. To identify, assess, and treat language and communication impairments, speech-language pathologists (SLPs) use a wide variety of tools and interventions. However, the degree to which common screening, assessment, and treatment practices are supported by the evidence is unclear. Method: This study (1) examined the actual screening, assessment, and treatment practices of 435 SLPs (as part of a cross-Canada survey); (2) identified best practice (via the consensus opinions of a clinician focus group); and (3) compared actual practice with best practice for aphasia and cognitive-communication impairment(s) post stroke. Results: Survey respondents (N=435) indicated 18 to 33 different screening and assessment tools, 27 to 33 additional methods or domains of screening and assessment, and 28 to 30 unique interventions as actual practice. Focus group participants (N=8) identified 20 to 22 different screening and assessment items, and 14 to 20 intervention items as best practice. The survey respondents provided vague descriptions of actual practice, whereas the focus group identified specific tools and interventions. This only allowed for general between-group comparisons. Conclusion: The actual screening, assessment, and treatment practices of SLPs for individuals with aphasia and cognitive-communication impairment(s) post stroke are diverse. The consensus opinions on best practice with this population identified the use of outcome measures with strong psychometric properties, as well as informal screening and assessment approaches. Both informal and evidence-supported interventions were also Best Practice Use Best Practice Use identified. The focus group noted best practice should be informed by the latest evidence, and be flexible to accommodate changing patient needs

The Precision Determination of Invisible-Particle Masses at the LHC

We develop techniques to determine the mass scale of invisible particles pair-produced at hadron colliders. We employ the constrained mass variable m_2C, which provides an event-by-event lower-bound to the mass scale given a mass difference. We complement this variable with a new variable m_2C,UB which provides an additional upper bound to the mass scale, and demonstrate its utility with a realistic case study of a supersymmetry model. These variables together effectively quantify the `kink' in the function Max m_T2 which has been proposed as a mass-determination technique for collider-produced dark matter. An important advantage of the m_2C method is that it does not rely simply on the position at the endpoint, but it uses the additional information contained in events which lie far from the endpoint. We found the mass by comparing the HERWIG generated m_2C distribution to ideal distributions for different masses. We find that for the case studied, with 100 fb^-1 of integrated luminosity (about 400 signal events), the invisible particle's mass can be measured to a precision of 4.1 GeV. We conclude that this technique's precision and accuracy is as good as, if not better than, the best known techniques for invisible-particle mass-determination at hadron colliders.Comment: 20 pages, 11 figures, minor correction

Case 17 : Can Hospitals do Health Promotion? Making Hospitals a Place for both Care and Health through Health Promotion

Lauren Kitsman trained as a health promoter and is now working for a hospital. She has been tasked with implementing a health promotion approach in her hospital and has tried to understand the health issues at the hospital and identified potential areas to inform health promotion action. She turned to the ‘health promoting hospitals (HPH) approach’ in order to bridge the gap between acute care and health promotion in the hospital setting. As she looked deeper into HPHs in Ontario, she discovered an advocacy network, the Ontario Health Promoting Hospitals Network (OHPHN). While the initiative had largely been unsuccessful in Ontario, Health Promoting Hospital Networks had been successful and continue to have momentum in Europe and around the world. There seemed to be success stories from other provinces (Quebec, in particular). Why is Ontario so different, and what could be done to overcome the barriers to make the work of this network successful? What can Lauren learn from international HPH efforts to apply in her local context? Lauren wants to make changes that are sustainable and in-line with HPH approaches but needs to remain true to the acute mandate of her hospital. She is unsure of next steps

Case 14 : Development of an Electronic Health Record Strategy at the Glenburn Public Health Unit

Medical or electronic health records (EHR) are electronic databases that capture an individual’s health and care history throughout their life. EHRs are often used as a single repository of patient information that is shared among multiple health care providers (such as hospitals, laboratories, and family physicians). The Ontario Ministry of Health and Long-Term Care requires all EHR systems in public health units be provincially certified; however, their budget does not provide units with the necessary funding for EHR implementation. The Glenburn Public Health Unit (GPHU) is conducting a review of their recordkeeping practices and has identified a need to streamline their methods for client documentation. There are currently inconsistencies across the unit’s many health teams that result in communication, logistical, and technical issues with respect to document storage and delivery. To address these issues, GPHU must develop an EHR strategy that seeks to improve current recordkeeping practices and, as a result, improves client service delivery

Assessment of Quality Improvement in Ontario Public Health Units

Background: Quality Improvement (QI) approaches are used extensively in healthcare settings and increasingly in public health. However, the proliferation of QI in Canadian public health settings is unknown. Purpose: The purpose of this study was to (a) assess the QI maturity in Ontario local public health units in Canada, and (b) to determine the relevance of the QI Maturity Tool in a Canadian setting Methods: The QI Maturity Tool (Version 5) was used to conduct a cross-sectional assessment of the QI maturity of 36 local public health units in Ontario, Canada. After tool items were reviewed for relevance, individuals most responsible for QI at each health unit were surveyed. Descriptive statistics were used to analyze the data. Results: Thirty-one individuals responded (response rate: 86%). Respondents reported strong leadership support for QI, but limited training and resources available to advance this area. Approximately half of public health units were found to be at the ‘beginner’ stage of QI maturity; 19% and 26% were in the ‘emerging’ and ‘progressive’ stages, respectively. Only 3% were in the ‘achieving’ stage and none are in the ‘excelling’ stage. Implications: The QI Maturity Tool is valuable for determining the maturity of QI in Ontario public health settings. There appears to be strong support for advancing QI across local public health in Ontario, but limited infrastructure to enable associated QI activities

Predator-Free New Zealand 2050: Techniques for Improving Ground-based Control and Monitoring of the Brushtail Possum

The brushtail possum, a marsupial native to Australia, was widely introduced in New Zealand (NZ) to develop a fur industry. Before the settlement of humans in NZ, there were no terrestrial mammals; therefore, the local species evolved without mammalian predators. This resulted in native species populations declining at alarming rates and many possibly facing extinction on the NZ mainland, especially large-bodied endemic birds. In response to this problem, private investors (supported by the NZ government) developed an initiative to eradicate key mammal predators (possums, rats, and stoats) on the NZ mainland by 2050 (PFNZ2050). As a result, control efforts have significantly expanded over the past decade, and there are now 17 PFNZ2050 landscape projects covering 757,000 ha. Research has looked at combining audio, visual and social lures to improve control efforts for possums. Early results indicate that a combination of lures increases both encounter and interaction rates around control devices. In particular, the combination of audio and visual lures was consistently the top performer in both captive and small-scale field trials. Large-scale field trials are currently underway to confirm these initial results, investigating the effectiveness of combination lures paired with multi-kill AT220 possum traps. Additionally, the lures are being assessed at different times of the year and with varying possum densities. With the drive to PFNZ2050, pest mammal monitoring has markedly increased as researchers attempt to evaluate competing management control strategies. Traditionally, this has relied on single-use plastic monitoring devices such as chewcards and tracking tunnels. An investigation of pest-animal interaction with chewcards indicates that approximately 12% of plastic deployed ends up as microplastic pollution. Another NZ government initiative seeks to ban all single-use plastics, and research is currently investigating the efficacy of non-plastic (biodegradable) alternatives. This research also includes a cost-effectiveness analysis and the reliability of identifying animal bite marks on both plastic and non-plastic chewcards