Numerical simulation of flow over barriers in complex terrain

This paper presents some of the results of numerical simulations of flow in the proximity of significant artificial terrain obstacles. The Mathematical model is based on Reynolds averaged Navier-Stokes equations for incompressible flows. Turbulent closure of the model is obtained by a simple algebraic turbulence model. The numerical solution is carried out by the semi-implicit finite-difference scheme. The results of simple tests are presented and summarized. Model sensitivity has been studied with respect to the simulated obstacle size and shape

Turning Research into Practice: Key Strategies for Developing a Shared Vision Approach for Health Education Advocacy

Public health studies thus far have not identified methods toward developing a shared vision to reduce health disparities in a unique area such as the U.S./Mexico border region. Purpose: To identify strategies to foster a shared vision among those in the media, the public, and policy arenas to help reduce health disparities in the U.S.- Mexico border. Methods: The Healthy Border 2010 research project included qualitative structured face-to-face interviews with ten individuals, each from Las Cruces, NM, El Paso, TX, and Cd. Juarez, Chih, Mexico, for a total of 30 interviewees from the media, the public and policy affiliations. Participants were identified and selected from the population of agenda-setters in the Paso Del Norte region. A snowball sample was used for studying the sometimes “hidden” population of border region agenda-setters. Data-analysis included extraction, coding, and quantifying of common themes from a transcription of interviews. Findings: Most participants (93%) suggested a systems level approach is required. The second most suggested strategy with 63% of participant support was sensitizing border leaders of the reality of issues in the area. Participants (46%) also suggested networking and media advocacy (40%) strategies as more important than the inclusion of priority audience (23%) or the proper allocation of resources (23%). Conclusion: In review of many current border health issues, there are significant gaps where a clear, shared vision is yet to emerge. When a common vision is well developed in a group or population, that is when genuine cooperative actions foster health policy development

Social Justice in the Borderlands: How Agenda-setting Theory Might Be Used to Reduce Health Disparities along the U.S./Mexico Border

Background and Purpose: Along the U.S./Mexico border, poverty, unemployment, and no to low access to health care is the norm. A primary goal of this article was to discuss a framework based on agendasetting theory to aid community members in getting relevant health care issues on the community “agenda.” To accomplish this, we aimed to better understand the demographics of influential people, or agenda-setters, in the area. Methods: We identified and interviewed 30 agenda-setters in communities on both sides of the U.S./ Mexico border. Health promotion agenda-setting (HPA-S) theories guided our study, and primarily qualitative research methods were utilized to analyzed transcripts taken from individual interviews with. Results: Participants indicated that community members can best advocate for health care resources by creating a shared vision among community members prior to asking for resources- by understanding the priorities of those holding the purse-strings, by framing the community wants within the bounds of those priorities, and by fostering strategic partnerships with influential agenda-setters in their communities. Conclusion: Through application of this framework, community members can increase their social justice by becoming better able to advocate for and obtain needed health care resources

Introducing Health Promotion Agenda-Setting for Health Education Practitioners

Health professionals must continuously address health promotion issues using the latest strategies and research. Currently in health care, too often an underdeveloped and under supported agenda prioritizes problems, issues, and solutions. Further, an ongoing competition exists among issues due to an undocumented agenda-setting process to gain the attention of media, public, and policy makers. Agendasetting is based on the belief that the media influence what we talk about, rather than controlling what we think, and how often an issue appears in the media influences the policy agenda (Dearing & Rogers, 1996). If an issue is “salient” and receives frequent or expansive coverage by media, audience members will talk more about that issue than one that is not as salient. A Health Promotion Agenda-Setting approach works to specify and prioritize problems and alternative solutions for increasing media exposure and setting agendas for “sustained” courses of action, (Kozel et al., 2003). The crucial link between agenda-setting and the process of establishing effective legislation, policy, and programs has been researched. However, many health practitioners do not understand what agenda setting is, nor how to apply agenda setting within the field of health education. Professional development in Health Promotion Agenda-Setting offers health education practitioners new knowledge, skills, methods, and opportunities to strengthen practices that influence the public health agenda and transform health promotion leadership

Do parkinsonian patients have trouble telling lies? The neurobiological basis of deceptive behaviour

Parkinson's disease is a common neurodegenerative disorder with both motor symptoms and cognitive deficits such as executive dysfunction. Over the past 100 years, a growing body of literature has suggested that patients with Parkinson's disease have characteristic personality traits such as industriousness, seriousness and inflexibility. They have also been described as ‘honest’, indicating that they have a tendency not to deceive others. However, these personality traits may actually be associated with dysfunction of specific brain regions affected by the disease. In the present study, we show that patients with Parkinson's disease are indeed ‘honest’, and that this personality trait might be derived from dysfunction of the prefrontal cortex. Using a novel cognitive task, we confirmed that patients with Parkinson's disease (n = 32) had difficulty making deceptive responses relative to healthy controls (n = 20). Also, using resting-state 18F-fluorodeoxyglucose PET, we showed that this difficulty was significantly correlated with prefrontal hypometabolism. Our results are the first to demonstrate that the ostensible honesty found in patients with Parkinson's disease has a neurobiological basis, and they provide direct neuropsychological evidence of the brain mechanisms crucial for human deceptive behaviour

Neural Correlates of True Memory, False Memory, and Deception

We used functional magnetic resonance imaging (fMRI) to determine whether neural activity can differentiate between true memory, false memory, and deception. Subjects heard a series of semantically related words and were later asked to make a recognition judgment of old words, semantically related nonstudied words (lures for false recognition), and unrelated new words. They were also asked to make a deceptive response to half of the old and unrelated new words. There were 3 main findings. First, consistent with the notion that executive function supports deception, 2 types of deception (pretending to know and pretending not to know) recruited prefrontal activity. Second, consistent with the sensory reactivation hypothesis, the difference between true recognition and false recognition was found in the left temporoparietal regions probably engaged in the encoding of auditorily presented words. Third, the left prefrontal cortex was activated during pretending to know relative to correct rejection and false recognition, whereas the right anterior hippocampus was activated during false recognition relative to correct rejection and pretending to know. These findings indicate that fMRI can detect the difference in brain activity between deception and false memory despite the fact that subjects respond with “I know” to novel events in both processes

Exploring Agenda-Setting for Healthy Border 2010: Research Directions and Methods

Policy makers take action largely on issues that attain the pinnacle of the policy agenda (Pertschuck, 2001). As a result, how decision makers choose which issues are important has been the subject of much research. Agenda-setting conceptualizes the process of how issues move from relative unimportance to the forefront of policymakers’ thoughts (Dearing & Rogers, 1996). An area within agenda-setting research, Health Promotion Agenda-Setting, provides Health Promotion practitioners with an innovative framework and strategy to set agendas for sustained courses of action (Kozel, Kane, Rogers, & Hammes, 1995). In this interdisciplinary and bi-national exploratory study, funded by the Center for Border Health Research of the Paso del Norte Health Foundation, we examine agenda-setting processes in the Paso del Norte Region and evaluates how the public health agenda is determined within the U.S.-Mexico border population. Integrating both quantitative and qualitative data collection methods, the current research is focused on identifying deficiencies in the public health infrastructure in the U.S.-Mexico border area, and identifying channels that exist for working toward the bi-national goals presented in Healthy Border 2010 (U.S.-Mexico Border Health Commission, 2003). Research directions, design, and methodologies for exploring health promotion agenda-setting in applied settings, such as Healthy Border 2010, provide health practitioners and policy makers the potential to improve public health leadership by influencing the public health and policy agendas