Computer programs for calculating potential flow in propulsion system inlets

Calculational procedure evolved in process of designing inlets. Douglas axisymmetric potential flow program called EOD calculates incompressible potential flow about arbitrary bodies. Program SCIRCL generates input for EOD from inlet components. Program COMBYN takes basic solutions output by EOD and combines them into solutions of interest and applied compressibility correction

Beyond the Crossroads: Shackled by Liberty, Tyrannized by Equality (Book Review: Slouching Towards Gomorrah)

Review of SLOUCHING TOWARDS GOMORRAH by Robert Bor

Alexitimia e Atitudes de Procura de Ajuda em Estudantes Universitários

Aim: This epidemiological study focused on prevalence of the personality trait, alexithymia – the inability to recognize and describe one’s own emotions – among college-aged students. Method: Levels of normative alexithymia (measured by the NMAS), clinical alexithymia (measured by the TAS), as well as attitudes towards help seeking behavior (measured by the ATSPPH) were assessed. Results: A total of 547 participants were collected from over 48 colleges and universities, primarily in Western New York. Results indicated that 89.5% of college students displayed moderate to high levels of normative alexithymia and 48.7% displayed moderate to high levels of clinical alexithymia. Additionally, there were no significant differences between the scores of men and women on either alexithymia measure. Significant findings indicated that there was a positive relationship between clinical alexithymia scores and attitudes toward help-seeking. Conclusion: These results call into question previous literature, which states that there is no correlation between alexithymia and help-seeking behavior (Berger et al., 2005, https://doi.org/10.1037/1524-9220.6.1.73). The results of this study suggest a shift in culture, as well as a need for more research regarding alexithymia.Objetivo: Este estudo epidemiológico focou-se na prevalência do traço de personalidade alexitimia – incapacidade de reconhecer e descrever as próprias emoções – entre estudantes em idade universitária. Método: Níveis de alexitimia normativa (medidos através do NMAS), alexitimia clínica (medida através do TAS), assim como atitudes em relação a comportamentos de procura de ajuda (medidos através do ATSPPH) foram medidos. Resultados: Foram incluídos um total de 547 participantes de 48 colégios e universidades, maioritariamente da zona Ocidental de Nova Iorque. Os resultados indicaram que 89.5% dos estudantes universitários apresentaram níveis moderados a elevados de alexitimia, e 48.7% apresentaram níveis moderados a elevados de alexitimia clínica. Adicionalmente, não foram encontradas diferenças significativas entre os resultados de homens e mulheres em ambas as medidas de alexitimia. Os resultados significativos indicaram a existência de uma relação positiva entre resultados clínicos de alexitimia e atitudes em relação à procura de ajuda. Conclusão: Estes resultados questionam a literatura existente, que afirma não existir correlação entre alexitimia e comportamentos de procura de ajuda (Berger et al., 2005, https://doi.org/10.1037/1524-9220.6.1.73). Os resultados deste estudo sugerem uma mudança cultural, bem como a necessidade de mais investigação na área da alexitimia

1-3 Piezocomposite design optimised for high frequency kerfless transducer arrays

Piezocomposites that can operate at frequencies above 30 MHz without spurious modes are required in order to develop sufficiently sensitive high frequency arrays for high resolution imaging. However, scaling down of conventional piezocomposite fabrication techniques becomes increasingly difficult as dimensions decrease with increasing frequency. The approach presented here is to use micro-moulded 1-3 piezocomposites and a distribution of piezoelectric segment size and separation. Innovative approaches to composite pattern design, based on a randomized spatial distribution, are presented. Micro-moulding techniques are shown to be suitable for fabricating composites with dimensions required for high frequency composites. Randomized piezocomposite patterns are modeled and are shown to suppress spurious modes

Interacting Factors Associated With Adult Male Drowning In New Zealand

Objectives: i) to identify factors that contribute to the global trend of the higher incidence of male drowning relative to females, and; ii) to explore relationships between such factors from mortality data in New Zealand. Methods: Drownings from 1983 to 2012 were examined for: Age, Ethnicity, Site, Activity, Buoyancy and Alcohol. Conditional frequency tables presented as mosaic plots were used to assess the interactions of these factors. Results: Alcohol was involved in a high proportion of Accidental Immersion drownings (61%) and was highest for males aged 20-24 years. When alcohol was involved there were proportionally more incidences where a life jacket was Available But Not Worn and less incidences where a life jacket was Worn. Many 30-39 year old males drowned during underwater activities (e.g., snorkeling, diving). Older men (aged +55 years old) had a high incidence of drowning while boating. Different ethnicities were over-represented in different age groups (Asian men aged 25-29, and European men aged 65-74) and when involved in different activities. Conclusions: Numerous interacting factors are responsible for male drownings. In New Zealand, drowning locations and activities differ by age and ethnicity which require targeted intervention strategies

Groundwater reinjection and heat dissipation: lessons from the operation of a large groundwater cooling system in Central London

The performance of a large open-loop groundwater cooling scheme in a shallow alluvial aquifer at a prominent public building in Central London has been monitored closely over its first 2 years of operation. The installed system provided cooling to the site continuously for a period of 9 months between June 2012 and April 2013. During this period, c. 131300 m3 of groundwater was abstracted from a single pumping well and recharged into a single injection borehole. The amount of heat rejected in this period amounts to c. 1.37 GWh. A programme of hydraulic testing was subsequently undertaken over a 3 month period between July and October 2013 to evaluate the performance of the injection borehole. The data indicate no significant change in injection performance between commissioning trials undertaken in 2010 and the most recent period of testing, as evidenced by comparison of injection pressures for given flow rates in 2010 and 2013. Continuous temperature monitoring of the abstracted water, the discharge and a number of observation wells demonstrates the evolution of a heat plume in the aquifer in response to heat rejection and subsequent dissipation of this heat during the 18 month planned cessation

Rapeseed. 2. Insect control

RAPESEED crops are highly susceptible to attack from a number of insects and, in most cases, some crop protection measures will be necessary to achieve satisfactory yields. This article discusses the insects that have been a problem in rapeseed crops in Western Australia to date