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Climate, Deer and Hogs: Drivers of Rapid Change in a Hickory-Dominated Maritime Forest on St. Catherines Island  [PDF]
C. Ken Smith, Elise Landreaux, Hali Steinmann, Royce Hayes, Alastair Keith-Lucas, Christa Hayes
Natural Resources (NR) , 2015, DOI: 10.4236/nr.2015.61002
Abstract: Maritime forests in the southeastern United States are very susceptible to climate change and have experienced dramatic reductions in extent following anthropogenic disturbances over the past two hundred years. St. Catherines Island, Georgia, an undeveloped barrier island, is home to an unusual pignut hickory (Carya glabra) maritime forest that is experiencing rapid rates of change, including a reduction in basal area from 23 m2·ha-1 in 1996 to 15 m2·ha-1 in 2014. Nine permanent forest plots and associated animal exclosures were installed across this 37 ha stand in 2012 to track forest change and seedling recruitment. From 2012 to 2014, declines in total basal area were caused by mortality of pignut hickory in the overstory and redbay (Persea borbonia) in the midstory. Pignut hickory continues to be ranked first in relative frequency, density and dominance, while Sabal palm (Sabal palmetto) is slightly increasing in relative density. In 2012, there were no woody species regenerating in any of the plots and following one year of animal exclosures, we found 478 pignut hickory seedlings ha-1; thus, deer browse and feral hog predation of nuts may be important drivers of change in this stand. The interplay among deer browse, exotic animal pressures, exotic insects and a drier climate has resulted in a very open forest with the regeneration of few woody plants. Without management of the feral hog and deer population, this unusual maritime forest, with trees as old as 250 years, may continue to decline.
Problem Hioba
Josiah ROYCE
Argument : Biannual Philosophical Journal , 2012,
Philosophical Perspectives on the Social Contract Theory: Hobbes, Kant and Buchanan Revisited A Comparison of Historical thought Surrounding the Philosophical Consequences of the Social Contract and Modern Public Choice Theory.
Mathias ROYCE
Postmodern Openings , 2010,
Abstract: To what extent is a prevalent social order that is constructed upon the freedom of the individual impacted by decisions taken in the domain of positive economics? How does the Hobbesian reductionist view of the state of nature correlate to the Kantian view of selfruled individualism expressed through rationality and autonomy? Applying Hobbesian thought in a democratic-economic context explains established and customary behaviour patterns of political economy in a reduced environmental setting. In precisely such setting individuals remain individuals on the basis of their ability to freely enter into contracts and any political means are attached to these individuals governed through an artificially constructed social contract. In thevalue-based and moral understanding of the social contract in its Kantian interpretation, the individual demands dignity and respect. This consequently justifies the individual as an end, rather than only a mean. How does Hobbesian and Kantian philosophy measure-up to Buchanan’s public choice theory and to what degree does the inclusion of morals in public choice lead to a normative diffusion of the social contract theory?
Knowledge translation opportunities in allergic disease and asthma
Royce Diana
Allergy, Asthma & Clinical Immunology , 2010, DOI: 10.1186/1710-1492-6-s4-a2
Rolls Royce Rolls Royce Magazine
Scientia Militaria : South African Journal of Military Studies , 2012, DOI: 10.5787/20-4-354
Abstract: Fifty years ago the Battle of Britain was fought in the skies over southern England, Historians have analysed the Battle in detail, and as a result some of its mystique has been torn away. For example, the RAF's claim that 185 German aircraft were shot down on 15 September 1940 was highly inaccurate; in fact the Luftwaffe lost only about 60 bombers and fighters on that day. But there are some certainties: The Battle was Hitler's first major reverse in the 1939-45 war, and it meant that Britain did not go the way of the countries in continental Europe which had been conquered in 1939 and in 1940 . It was a very close thing. The Royal Air Force was helped by good equipment, radar, the benefit of fighting over home territory, and German errors.
Assumptions and Challenges of Open Scholarship
George Veletsianos,Royce Kimmons
International Review of Research in Open and Distance Learning , 2012,
Abstract: Researchers, educators, policymakers, and other education stakeholders hope and anticipate that openness and open scholarship will generate positive outcomes for education and scholarship. Given the emerging nature of open practices, educators and scholars are finding themselves in a position in which they can shape and/or be shaped by openness. The intention of this paper is (a) to identify the assumptions of the open scholarship movement and (b) to highlight challenges associated with the movement’s aspirations of broadening access to education and knowledge. Through a critique of technology use in education, an understanding of educational technology narratives and their unfulfilled potential, and an appreciation of the negotiated implementation of technology use, we hope that this paper helps spark a conversation for a more critical, equitable, and effective future for education and open scholarship.
Journal of Community Positive Practices , 2012,
Abstract: This paper draws on research carried out in the UK which examined the views of South Asian women towards employment, looking in particular at why the participation rate of Bangladeshi and Pakistani women in the labour market is very low. The focus of the paper is on non-working women. The research was aimed at informing policy design, so that policies intended to assist certain groups of people enter, or get closer to entering, the labour market might be more effective. The research involved carrying interviews with 212 Bangladeshi and Pakistani women in West Yorkshire, a sub-region of the UK with a relatively high Asian population. 26 focus groups were also carried out. It is argued that there are three broad groups of South Asian women in relation to employment: women who are some distance from the labour market; women who wish to enter paid work; and women who do currently work but require support. There are different policy implications for each of these groups. The paper concludes that the barriers to labour market entry are deep-seated, complex, and rooted in cultural, familial, and societal norms. It provides a case study of an innovative programme which was piloted in a nearby sub-region of the UK, South Yorkshire, which was tailor-made to meet the specific needs of South Asian women and was very successful. The paper argues that this could provide a template for programmes in the future aimed at assisting groups facing challenges in relation to labour market entry, such as minority ethnic women.
A Phase-Field Model of Spiral Dendritic Growth
Royce Kam,Herbert Levine
Physics , 1996, DOI: 10.1103/PhysRevE.54.2797
Abstract: Domains of condensed-phase monolayers of chiral molecules exhibit a variety of interesting nonequilibrium structures when formed via pressurization. To model these domain patterns, we add a complex field describing the tilt degree of freedom to an (anisotropic) complex-phase-field solidification model. The resulting formalism allows for the inclusion of (in general, non-reflection symmetric) interactions between the tilt, the solid-liquid interface, and the bond orientation. Simulations demonstrate the ability of the model to exhibit spiral dendritic growth.
Unicellular algal growth: A biomechanical approach to cell wall dynamics
Royce Kam,Herbert Levine
Physics , 1997, DOI: 10.1103/PhysRevLett.79.4290
Abstract: We present a model for unicellular algal growth as motivated by several experiments implicating the importance of calcium ions and ``loosening'' enzymes in morphogenesis. A growing cell at rest in a diffusive calcium solution is viewed as an elastic shell on short timescales. For a given turgor pressure, we calculate the stressed shapes of the wall elements whose elastic properties are determined by Young's modulus and the thickness of the wall. The local enzyme concentration then determines the rate at which the unstressed shape of a wall element relaxes toward its stressed shape. The local wall thickness is calculated from the calcium-mediated addition of material and thinning due to elongation. We use this model to calculate growth rates for small perturbations to a circular cell. We find an instability related to modulations of the wall thickness, leading to growth rates which peak at a finite wave number.
Stroke and Constipation
—Coincidence or Interrelated?

Jayaprada Kasaraneni, Margaret Hayes
Health (Health) , 2014, DOI: 10.4236/health.2014.619313
Abstract: Emile Gautier once said, “Freedom of the bowels is the most precious, perhaps even the most essential, of all freedoms—one without which little can be accomplished.” This paper will explore the neuronal physiology, pathophysiology, theories regarding the correlation between stroke and constipation along with a few treatment options. Patients often recovering from stroke complain of constipation and it is most likely attributed to changes in diet, ambulation, or fluid balance. However, there are not many studies to reflect the correlation between other less significant symptoms and stroke presentation.
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