143 research outputs found
Cerebrovascular function in aging and dementia: a systematic review of transcranial Doppler studies
No full textAbstract not availableHannah A.D. Keage, Owen F. Churches, Mark Kohler, Danielle Pomeroy, Rocco Luppino, Michelle L. Bartolo, Scott Elliot
Article - Ethelwyn Wetherald
No full textAn article about the life and work of Ethelwyn Wetherald printed in The Challenge. The article discusses that she not only wrote about nature, but also emotion and life. The author mentions "Sir Wilfrid Laurier was one of her many admirers and in one of his speeches in the House of Commons, he quoted her poem, 'My Orders'. 'My orders are to fight. Then if I bleed, or fail, Or strongly win, what matters it? God only doth prevail. The servant craveth naught Except to serve with might. I was not told to win or lose - My orders are to fight'". The article is also signed by the author with a note that reads "with much love from Elsie Pomeroy"
Estimating demographic parameters for capture-recapture data in the presence of multiple mark types
No full textIn mark-recapture studies, various techniques can be used to uniquely identify individual animals, such as ringing, tagging or photo-identification using natural markings. In some long-term studies more than one type of marking procedure may be implemented during the study period. In these circumstances, ignoring the different mark types can produce biased survival estimates since the assumption that the different mark types are equally catchable (homogeneous capture probability across mark types) may be incorrect.We implement an integrated approach where we simultaneously analyse data obtained using three different marking techniques, assuming that animals can be cross-classified across the different mark types. We discriminate between competing models using the AIC statistic. This technique also allows us to estimate both relative mark-loss probabilities and relative recapture efficiency rates for the different marking methods.We initially perform a simulation study to explore the different biases that can be introduced if we assume a homogeneous recapture probability over mark type, before applying the method to a real dataset. We make use of data obtained from an intensive long-term observational study of UK female grey seals (Halichoerus grypus) at a single breeding colony, where three different methods are used to identify individuals within a single study: branding, tagging and photo-identification based on seal coat pattern or pelage.Peer reviewe
Book Review: Alliances & Armor: Communist Diplomacy and Armored Warfare During the War in Vietnam
No full textAuthor: Jim Pomeroy
Reviewed by: Dr. Gregory A. Daddis, Melbern G. Glasscock Endowed Chair in American History, Texas A&M University
In Alliances & Armor, Jim Pomeroy reveals how Cold War diplomacy shaped North Vietnam’s battlefield tactics, transforming guerrilla warfare into Soviet-style armored offensives. Drawing from multi-archival sources, the book traces Hanoi’s strategic pivot from China to the USSR amid shifting global alliances and escalating US involvement. With gripping detail, Pomeroy chronicles the rise of the People’s Army of Vietnam’s tank-led campaigns, culminating in the dramatic fall of Saigon.https://press.armywarcollege.edu/parameters_bookshelf/1120/thumbnail.jp
Corrigendum to “Reproductive cycles of marine mammals” [Anim. Reprod. Sci. 124 (2011) 184–193]
No full textThe author regrets the following errors in the paper above: Table 2 was previously published in “Todd R. Robeck, Shannon K.C. Atkinson, and Fiona Brook (2001) ‘Reproduction’, in CRC Handbook of Marine Mammal Medicine Health, Disease, and Rehabilitation, Edited by Leslie A. Dierauf and Frances M.D. Gulland: CRC Press, pp. 193–236” and is reproduced with permission. Table 4 was previously published in “Boyd, I.L., Lockyer, C., & Marsh, H. (1999). Reproduction in marine mammals. In J.E. Reynolds III, & S.A. Rommel (Eds.), Biology of Marine Mammals. (pp. 218–286). Smithsonian Institution Press” and is reproduced with permission. The author would like to apologise for any inconvenience caused.</p
Implementing a community-focused health and work service (HWS)
No full textOur original proposal for a Community-Focused Health & Work Service (HWS) was one of 12 included in the McCrery-Pomeroy SSDI Solutions Initiative. We recommended that the Federal government build the capability to deliver services nationwide that will reduce demand for SSDI by helping working people who lose time from work due to the most common musculoskeletal and mental health conditions to stay employed. Nearly 30 percent of people newly awarded SSDI cite back pain, joint pain, anxiety, or depression as their major problem. Research has shown that the best way to improve both health and work outcomes is to act quickly, discern which individuals need extra attention, and then actively intervene to help them get what they need and get back on their feet. The HWS concept is modeled on Washington State’s successful Centers for Occupational Health & Education (COHE) program, which reduced demand for long-term disability pensions and SSDI by 30 percent. It is also grounded in more than 20 years of disability prevention research, policy, and program innovations in both the UK and the US. As designed, the HWS is an addition to a community’s social fabric and serves a target population whose unmet needs create demand for disability programs but have been largely overlooked until now. This concept is new and quite different from other disability-related programs, so implementing it will be a challenge. Part 1 of this paper is aimed at policymakers. It asks and answers fundamental questions in order to garner support for implementing a HWS. Part 2 alerts those who will guide or run the program at the national or state level to some critical issues that will lead to success or failure of the operationalization effort – and influence the outcomes produced. It also addresses some little details that could derail the program unless noticed and well managed by those responsible for delivering services in individual cases. For one example, this includes allocating substantial resources to marketing and community relationship building in order to assure a sufficient and on-going volume of referrals. Part 3 considers the interaction of program design and development challenges with the imperative to objectively evaluate program effectiveness. The Technical Appendix provides even more practical advice on key topics for local operators, such as suggested hiring criteria, training requirements, details concerning the referral process, eligibility screening, behavioral incentives, information management during start-up, and so on. Permanent Link: http://www.crfb.org/project/ssdi/implementing-community-focused-health-work-service-hws Author Affiliation Jennifer Christian Thomas Wickizer Kim Burton Webility Corporation The Ohio State University University of Huddersfield The McCrery-Pomeroy SSDI Solutions Initiative This paper has been published as part of the McCrery-Pomeroy SSDI Solutions Initiative, a project dedicated to identifying practical policy changes to improve the Social Security Disability Insurance (SSDI) program and other policies for people with disabilities. More information about the SSDI Solutions Initiative is available at http://www.SSDISolutions.org/. The SSDI Solution Initiative is a project of the Fiscal Institute at the Committee for a Responsible Federal Budget. The views expressed in this paper represent those of its authors and not organizations or individuals affiliated with the authors, the McCrery-Pomeroy SSDI Solutions Initiative, or the Committee for a Responsible Federal Budget
Book Reviews
No full textBook Review 1Book Title: Concepts of Ecosystem EcologyBook Authors: Edited by L.R. Pomeroy & J.J. AlbertsSpringer-Verlag, New York 1988. 384 pp.Book Review 2Book Title: Ecophysiology of the Camelidae and Desert RuminantsBook Author: R.T. WilsonSpringer-Verlag 1989
Numerical experiments on resonant wave amplification over a fringing reef
No full textWaves are important drivers for reef hydrodynamics, and therefore strongly contribute to flooding over reef-lined coasts. While high-frequency waves are largely dissipated when they propagate over the reef flat due to breaking and friction, low-frequency (LF) waves are generally able to reach the back-reef beach. There, they can reflect and form (quasi-) standing wave patterns, which under resonant conditions can lead to disproportionally high run-up on the beach (e.g., Pequignet et al., 2009; Gawehn et al., 2016). The probability of this phenomenon is expected to increase due to sea-level rise (e.g., Pequignet et al., 2009). In this study, we numerically investigate long wave resonance and the processes enhancing or limiting the resonant amplification of long waves over the reef flat. Besides the role of frictional dissipation (e.g., Pomeroy et al. 2012), we investigate how the nonlinear transformation of long waves influences the amplification rate.Environmental Fluid MechanicsCoastal EngineeringHydraulic Structures and Flood Ris
Low frequency wave resonance on fringing reefs
No full textReef systems have been estimated to exist along approximately 80% of the world’s coastlines with living coral reefs, relic limestone platforms and submerged rock formations being the most common types observed. The processes of wave breaking on a reef crest, setup on a reef and flow over and within a lagoon, have been the primary focus of research to date, while wave transformation shoreward of the reef crest and surf zone have also been studied. The propagation of low frequency waves has been shown to have a large influence on flow, sediment transport and morphology. Furthermore, it has been demonstrated that these waves may possess periods that, if closely correlated with the reef width and depth, may enter a standing wave type form and possibly resonate. Aim: The aim of this study was to determine the indicators of low frequency resonance in field, laboratory or numerical model data, and to identify the influence of different geometric parameters on the generation of low frequency wave resonance on a fringing reef. Methods: The indicators were tested by the use of the numerical model XBeach, which was demonstrated to consist of a numerical basis suitable for the analysis of reef systems. The model was calibrated with high-resolution field data obtained at the Ningaloo Reef (Western Australia). The tested indicators were then applied to the Ningaloo Reef field data to determine if a resonance signal could be identified at the site. Finally, a geometric parameter sensitivity analysis was conducted with an idealised reef profile based upon the Ningaloo Reef. The wave boundary of the model was forced with a JONSWAP-type spectrum that characterised the peak of a storm at the site. The influence of different geometric parameters (in both non-frictional and frictional cases) was investigated and compared to an analytical model. Results: For two time-series that are spatially lagged across a reef, three indicators need to be satisfied to demonstrate the presence of resonance. They are: the surface elevation variance across the basin must be coherent, a phase relationship associated with the mode of resonance considered must exist, and an amplification of the wave between two points considered at the frequency of resonance must occur. The results of the indicator tests showed strong agreement with a simple basin analytical model that was adapted to include the effect of a lagoon. Strong amplification (resonant) peaks were observed for the first two standing waveforms. The frequency of these peaks was affected by the setup on a reef while the amplitude was affected by the influence of friction. It was shown that for frictional values consistent with Ningaloo Reef, the amplification peaks ‘flatten’ to magnitudes similar to the progressive waves in the spectrum. The geometric sensitivity analysis indicated that the resonant frequency was more sensitive to the reef and lagoon length than the reef and lagoon depth. The amplification was greatest for the zero and first-mode of resonance. However this amplification was dampened with the introduction of friction. It was determined that resonance is not likely to occur on reef systems with the geometry, frictional characteristics and wave forcing similar to the studied section of Ningaloo Reef. Resonance may occur for reef systems with shorter reef and lagoon widths, lower frequency forcing and/or less frictional dissipation. The latter may occur for reefs that have a different roughness to Ningaloo Reef as well as for reef systems that are damaged or dying in which coral assemblages degrade into coral rubble.CoMEM - Coastal and Marine Engineering and ManagementHydraulic EngineeringCivil Engineering and Geoscience
Self-Education and Late-Learners in The Attic Nights of Aulus Gellius
No full textThis thesis was motivated by expressions of self-education during the early Roman Empire, an unusual topic that has never before been studied in detail. The elite cultural perspective nearly always ensured that Latin authors presented the topos of self-education as a case of social embarrassment or status dissonance that needed to be resolved, with these so-called autodidacts characterised as intellectual arrivistes. But the material remains written by self-educated men and women are expressed in more personal terms, complicating any simple definition and hinting at another side. The first half of this thesis builds a theory of self-education by outlining the social structures that contributed to the phenomenon and by investigating the means and the motivation likely for the successful and practical-minded autodidact. This framework
is influenced by Pierre Bourdieu, whose work on culture, class, and education integrated similar concerns within a theory of habitus. As with other alternatives to the conventional upbringing of the educated classes, attempts at self-education were inevitable but ultimately futile. An autodidact by
definition missed out on the manners, gestures, and morals that came with the formal education and daily inculcation supplied by the traditional Roman household. In most instances it is unlikely that education could ever have contributed to social mobility. The latter half of this thesis treats Gellius's Attic Nights as a case study of self-education on two levels. A self-consciously recherche miscellany, the Nights at once
encourages respectable gentlemen to improve themselves with a short-cut to culture, yet also humiliates any socially marginal figures attempting to educate themselves. This process reproduces the social order by undermining the integrity of any rivals to the elite cultural model while at the same time lionising the author and members of his circle as intellectual 'vigilantes'
- …
