Global Warming: Why is There Debate?

Previous studies have produced conflicting results for the determining factors of acceptance or rejection of the science behind the global warming phenomenon; some cite religion as a hindrance to the acceptance of this scientific theory [Kilburn 2008], some conclude lack of education is the driving force [Brechin 2003], and some deduce that party affiliation plays the most significant role in determining belief in global warming. In this study, the National Election Survey of 2012 dataset, consisting of 5,916 individual data points from the United States of America, is analyzed to determine the effects of party affiliation on one’s belief in global warming, along with variables for education, religion, and age. The study was conducted using a logit model. The results conclude that religiosity and democratic affiliation had a significantly positive effect on one’s belief in global warming, while education had a significantly negative effect (p\u3c0.01). Age did not have a significant effect. These unexpected results are worth continued consideration, with the inclusion of research into the characteristics of those labeled democrats versus republicans in this dataset, as these distinctions could point to a shift in the generally accepted definitions of the political parties

Geographies of Production I: Relationality revisited and the ‘practice shift’ in economic geography

This report considers recent developments and ongoing debates around relational economic geography, and a growing body work that has focused on economic practices as a means to better understand production processes and economic development. In particular it examines the critical reaction to relational thinking within the sub-discipline, and the nature of the debate about the degree to which relational work is - and needs to be - regarded as distinct from more traditional approaches to economic geography. It then considers how relational economic geography has become inflected towards an epistemological and methodological focus on practice. It argues that this engagement with economic practices provides the basis to respond to some of the limitations identified with earlier work, and opens up fruitful new potential for theorizing the nature of agency in the space economy

Accurate macroscale modelling of spatial dynamics in multiple dimensions

Developments in dynamical systems theory provides new support for the macroscale modelling of pdes and other microscale systems such as Lattice Boltzmann, Monte Carlo or Molecular Dynamics simulators. By systematically resolving subgrid microscale dynamics the dynamical systems approach constructs accurate closures of macroscale discretisations of the microscale system. Here we specifically explore reaction-diffusion problems in two spatial dimensions as a prototype of generic systems in multiple dimensions. Our approach unifies into one the modelling of systems by a type of finite elements, and the `equation free' macroscale modelling of microscale simulators efficiently executing only on small patches of the spatial domain. Centre manifold theory ensures that a closed model exist on the macroscale grid, is emergent, and is systematically approximated. Dividing space either into overlapping finite elements or into spatially separated small patches, the specially crafted inter-element/patch coupling also ensures that the constructed discretisations are consistent with the microscale system/PDE to as high an order as desired. Computer algebra handles the considerable algebraic details as seen in the specific application to the Ginzburg--Landau PDE. However, higher order models in multiple dimensions require a mixed numerical and algebraic approach that is also developed. The modelling here may be straightforwardly adapted to a wide class of reaction-diffusion PDEs and lattice equations in multiple space dimensions. When applied to patches of microscopic simulations our coupling conditions promise efficient macroscale simulation.Comment: some figures with 3D interaction when viewed in Acrobat Reader. arXiv admin note: substantial text overlap with arXiv:0904.085

Expected Precision of Higgs Boson Partial Widths within the Standard Model

We discuss the sources of uncertainty in calculations of the partial widths of the Higgs boson within the Standard Model. The uncertainties come from two sources: the truncation of perturbation theory and the uncertainties in input parameters. We review the current status of perturbative calculations and note that these are already reaching the parts-per-mil level of accuracy for the major decay modes. The main sources of uncertainty will then come from the parametric dependences on alpha_s, m_b, and m_c. Knowledge of these parameters is systematically improvable through lattice gauge theory calculations. We estimate the precision that lattice QCD will achieve in the next decade and the corresponding precision of the Standard Model predictions for Higgs boson partial widths.Comment: 20 pages, 1 figure; v2: minor typo correction

A new perturbative approach to the adiabatic approximation

A new and intuitive perturbative approach to time-dependent quantum mechanics problems is presented, which is useful in situations where the evolution of the Hamiltonian is slow. The state of a system which starts in an instantaneous eigenstate of the initial Hamiltonian is written as a power series which has a straightforward diagrammatic representation. Each term of the series corresponds to a sequence of "adiabatic" evolutions, during which the system remains in an instantaneous eigenstate of the Hamiltonian, punctuated by transitions from one state to another. The first term of this series is the standard adiabatic evolution, the next is the well-known first correction to it, and subsequent terms can be written down essentially by inspection. Although the final result is perhaps not terribly surprising, it seems to be not widely known, and the interpretation is new, as far as we know. Application of the method to the adiabatic approximation is given, and some discussion of the validity of this approximation is presented.Comment: 9 pages. Added references, discussion of previous results, expanded upon discussion of main result and application of i

Exploring school counselors’ preparation to address disproportionality of African American students in special education

While school counselors work with students in special education, little research describes their work with African American students in or at risk of special education or the phenomenon of disproportionality of African American students in special education. This phenomenological study explored the experiences and perceptions of eight high school counselors with African American students in special education and disproportionality. The researcher identified three themes: (a) Dis-Regard, (b) separate worlds and (c) professional knowledge. Intentional strategies to introduce counselors to the concept of disproportionality and its antecedents may mitigate processes that potentially lead to overrepresentation of African Americans in special education

Educational Opportunities for Dressage Participants as Perceived by Members of the United States Dressage Federation

The United States Dressage Federation (USDF) has sought to develop educational support for the American dressage enthusiast since its inception in the 1970s. American riders face unique challenges in comparison to European riders, such as the larger geographic mass of the United States and the logistics of both horse and rider confronting drastically increased travel demands. Additionally, differing educational and financial support infrastructures by country create further obstacles for those industry members who wish to aggressively pursue dressage as either an amateur or professional. While much conjecture and anecdotal evidence to these obstacles are documented by industry professionals, most of this discourse is in the context of success at internationally competitive levels rather than purely educational progress and little of it is supported with academic research.;Within the United States there is very little research addressing the support infrastructure of the American dressage enthusiast. The purpose of this study was to measure the U.S. riders\u27 perceptions of the educational landscape. A random stratified sample of 2015 members of the United States Dressage Federation (USDF) were surveyed in order to ascertain the most prominent perceived obstacles to their success within the industry. Awareness and participation in various educational programming offered specifically by the USDF was also explored. Participants additionally identified sources of educational support they utilized outside of the membership organization. By obtaining demographic information from respondents, the researcher described the current opportunities both nationally and per individual USDF Region. The long-term effects of the study will result in a better understanding of the training options needed to supplement current infrastructure in order to opportunities for American dressage riders. Results are available to regionalized Group Member Organizations to alert them as to both areas of exceptional support and areas where their membership needs assistance

Using practice effects for targeted trials or sub-group analysis in Alzheimer\u27s disease: How practice effects predict change over time

OBJECTIVE: To describe the presence of practice effects in persons with Alzheimer disease (AD) or mild cognitive impairment (MCI) and to evaluate how practice effects affect cognitive progression and the outcome of clinical trials. METHODS: Using data from a meta-database consisting of 18 studies including participants from the Alzheimer disease Cooperative Study (ADCS) and the Alzheimer Disease Neuroimaging Initiative (ADNI) with ADAS-Cog11 as the primary outcome, we defined practice effects based on the improvement in the first two ADAS-Cog11 scores and then estimated the presence of practice effects and compared the cognitive progression between participants with and without practice effects. The robustness of practice effects was investigated using CDR SB, an outcome independent the definition itself. Furthermore, we evaluated how practice effects can affect sample size estimation. RESULTS: The overall percent of practice effects for AD participants was 39.0% and 53.3% for MCI participants. For AD studies, the mean change from baseline to 2 years was 12.8 points for the non-practice effects group vs 7.4 for the practice effects group; whereas for MCI studies, it was 4.1 for non-practice effects group vs 0.2 for the practice effects group. AD participants without practice effects progressed 0.9 points faster than those with practice effects over a period of 2 years in CDR-SB; whereas for MCI participants, the difference is 0.7 points. The sample sizes can be different by over 35% when estimated based on participants with/without practice effects. CONCLUSION: Practice effects were prevalent and robust in persons with AD or MCI and affected the cognitive progression and sample size estimation. Planning of future AD or MCI clinical trials should account for practice effects to avoid underpower or considers target trials or stratification analysis based on practice effects