Development of an apparatus to measure thermophysical properties of wind tunnel heat transfer models

The apparatus and technique for measuring the thermophysical properties of models used with the phase-change paint method for obtaining wind tunnel heat transfer data are described. The method allows rapid measurement of the combined properties in a transient manner similar to an actual wind tunnel test. An effective value of the thermophysical properties can be determined which accounts for changes in thermal properties with temperature or with depth into the model surface. The apparatus was successfully tested at various heating rates between 19,000 and 124,000 watts per square meter

Low grade glioma: An Update for Radiologists

With the recent publication of a new World Health Organization (WHO) brain tumour classification that reflects increased understanding of glioma tumour genetics there is a need for radiologists to understand the changes and their implications for patient management. There has also been an increasing trend for adopting earlier, more aggressive surgical approaches to low grade glioma treatment. We will summarise these changes, give some context to the increased role of tumour genetics and discuss the associated implications for radiologists of their adoption. We will discuss the earlier and more radical surgical resection of low grade gliomas and what it means for imaging patients

Teacher\u27s Lives and Beliefs: Influences That Shape the Teaching of U. S. History

The purpose of this study was to examine the complex influences that shape the teaching of U. S. history. Six secondary American history teachers participated in interviews and classroom observations centering on factors that affect their approach to the teaching of U. S. history. Findings indicate that there are various influences that play a significant role in determining the version of U. S. history students have the opportunity to learn. These include teachers’ personal beliefs about religion and morality, the affect of history professors, and teachers’ social class and family backgrounds. Several suggestions are made as to how teacher education programs can encourage pre-service teachers to examine the influences that shape their lives, classrooms, and students

A Habermasian Analysis of Qatar's National Teacher Professional Standards

The belief that implementing professional standards will improve teaching and learning has led many countries to embrace standards based educational reforms. Qatar is one of those nations implementing, Education for a New Era that includes the adoption of professional teacher standards. This paper examines Qatar’s professional standards for teachers using Habermas’ knowledge constitutive interests (KCIs) as a theoretical framework. Findings provide insight into how the KCIs are embedded in the professional standards. Suggestions are provided regarding the possible use of Habermas’ knowledge constitutive interests in the preparation of teachers

Addressing Christianity in American History: Are Textbooks Improving?

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Reduction of low- and high-grade cervical abnormalities associated with high uptake of the HPV bivalent vaccine in Scotland

In Scotland, a national HPV immunisation programme began in 2008 for 12-13 year olds, with a catch-up campaign from 2008-2011 for those under the age of 18. To monitor the impact of HPV immunisation on cervical disease at the population level, a programme of national surveillance was established.  We analysed colposcopy data from a cohort of women born between 1988-1992 who entered the Scottish Cervical Screening Programme (SCSP) and were aged 20-21 in 2008-2012.  By linking datasets from the SCSP and colposcopy services, we observed a significant reduction in diagnoses of cervical intraepithelial neoplasia 1 (CIN 1) (RR 0.71, 95% CI 0.58 to 0.87, p=0.0008), CIN 2 (RR 0.5, 95% CI 0.4, 0.63, p<0.0001) and CIN 3 (RR 0.45, 95% CI 0.35 to 0.58, p< 0.0001) for women who received 3 doses of vaccine compared with unvaccinated women.  To our knowledge, this is one of the first studies to show a reduction of low and high grade cervical intraepithelial neoplasia associated with high uptake of the HPV bivalent vaccine at the population level. These data are very encouraging for countries that have achieved high HPV vaccine uptake

The neural basis of video gaming

Video game playing is a frequent recreational activity. Previous studies have reported an involvement of dopamine-related ventral striatum. However, structural brain correlates of video game playing have not been investigated. On magnetic resonance imaging scans of 154 14-year-olds, we computed voxel-based morphometry to explore differences between frequent and infrequent video game players. Moreover, we assessed the Monetary Incentive Delay (MID) task during functional magnetic resonance imaging and the Cambridge Gambling Task (CGT). We found higher left striatal grey matter volume when comparing frequent against infrequent video game players that was negatively correlated with deliberation time in CGT. Within the same region, we found an activity difference in MID task: frequent compared with infrequent video game players showed enhanced activity during feedback of loss compared with no loss. This activity was likewise negatively correlated with deliberation time. The association of video game playing with higher left ventral striatum volume could reflect altered reward processing and represent adaptive neural plasticity. Translational Psychiatry (2011) 1, e53; doi: 10.1038/tp.2011.53; published online 15 November 2011</p

Truth against truth: American and Arab history school textbooks portrayal of the Arab–Israeli conflict

Textbooks reflect a national consensus regarding the knowledge, values and perspectives that a society wants conveyed to their students. Through textbooks, students are exposed to a dominant narrative that presents an official story that shapes contemporary patriotism (Hein and Selden, 2000). This paper centers on how the narratives of textbooks portray the Arab Israeli conflict and other relevant events. Textbooks from Iraq, Jordan, Egypt and the United States are examined to determine what knowledge is transmitted to students about the Arab Israeli conflict. Findings indicate that the conflict is oversimplified, important information is omitted and textbooks provide limited narratives of the conflict. The authors of this study suggest the implementation of a narrative-based approach to teaching history so that students are provided with opportunities to develop a critical analysis of textbook knowledge and to discover that historical events are composed of multiple narratives that should be examined