Study of the Compressive Strength of Aluminum Curved Elements

Currently, the Specification for Aluminum Structures (Aluminum Association, 2010) shows thin-walled aluminum plate sections with radii greater than eight inches have a lower compressive strength capacity than a flat plate with the same width and thickness. This inconsistency with intuition, which suggests any degree of folding a plate should increase its elastic buckling strength, inspired this study. A wide range of curvatures are studied—from a nearly flat plate to semi-circular. To quantify the curvature, a single non-dimensional parameter is used to represent all combinations of width, thickness and radius. Using the finite strip method (CU-FSM), elastic local buckling stresses are investigated. Using the ratio of stress values of curved plates compared to flat plates of the same size, equivalent plate-buckling coefficients are calculated. Using this data, nonlinear regression analyses are performed to develop closed form equations for five different edge support conditions. These equations can be used to calculate the elastic critical buckling stress for any curved aluminum section when the geometric properties (width, thickness, and radius) and the material properties (elastic modulus and Poisson’s ratio) are known. This procedure is illustrated in examples, each showing the applicability of the derived equations to geometries other than those investigated in this study and also providing comparisons with theoretically exact numerical analysis results

Philosophy and science in the arts curriculum of the Scottish universities in the 17th century

The philosophical and scientific teaching in the universities of 17th century Scotland has frequently been dismissed as Aristotelian and reactionary. However, there must surely have been some development during the century for the universities to have achieved as much as they did in the 18th century. It is the purpose of this study to investigate the contant of the courses in philosophy and science given at the Scottish Universities in the 17th century with a view to answering the following quesions: Was Aristotle really taught so exclusively throughout the century? Or, given that the universities did concentrate on Aristotle to a great extent, was this Aristotleianism so monolithic and unifrom as is sometimes made out? Did Scottish university teachers make any acknowledgement of the philosophical and scientific revolutions which were taking place in the 17th century? How were the universities affected by the political and religeous struggles of the century? Was the teaching the same at Aberdeen, Edinburgh, Glasgow and St. Andrews, or were some of the universities in advance of the others? The main sources for our knowledge of 17th century Scottish university teaching are student lecture notes or dictates and the graduate theses produced by the masters or regents for the students to defend at the annual laureation ceremony. the dictates and theses are supplemented by library lists, university and faculty minutes, and the reports of the numerous commissions appointed by church and state to visit the universities during the 17th century, together with papers relating to these commissions. Throughout the century the curriculum at all universities remained the same in outline, viz. 1st year: Greek; 2nd years: Logic/ metaphysics; 3rd year: Metaphysics/ Ethics; 4th year: physics. Until the 1660s the teaching in the 2nd, 3rd and fourth years consisted of commentaries on Aristotle, but the authorities cited by the regents show that they were acquainted with more 'modern' Aristotalians, e.g. Zabarella and the Coimbra commentators. Frequently the works of such authors were praised, and the library lists show that they were bought extensively. From the 1660s onwards Cartesianism entered the courses. At first the regents distrusted this new philosophy, and indeed as long as Descartes was taught in the Scottish Universities, many of the regents and visiting commissioners feared the atheistic implications of Cartesian mechanism. However, descartes was accorded warm praise in the theses and dictates for Edinburgh, St. Andrews and Aberdeen during the 1670s and 1680s. by the 1690s the enthusiasm for Descartes was beginning to decline, although some of the regents continued to teach Cartesianism into the 18th century. In Logic and Metaphysics the teaching of Locke was often adopted, and in Physics Newtonian ideas were expounded. The teaching was perhaps most conservative in Logic, where Aristotelian ideas continued to be taught by the scholastic method of debate until the beginning of the 18th century. Despite the praises of Descartes's method, and later Locke, the scheme for Logic teaching was probably based on scholastic textbooks such as those of Keckermann and Burgersdijk. In Metaphysics too scolasticism tended to predominate, but because of Scotland's religeous allegiance there are numerous quotations from and references to the works of Protestant theologians. Once commentaries on Aristotle ceased, metaphysics was divided into Metaphysics proper and Pneumatology, the two subjects frequently being separated and taught in different years of the course. the Scottis regents saw Ethics as a strictly practical science, aimed at teaching their students how to live as godly citizens. Accordingly in their Ethics teaching they tended to cite authorities less frequently than in their teaching of other subjects; instead they gave rules of conduct for their students. After the 1660s many of the regents based their teaching on Henry More, and Descartes's theory of the passions was widely accepted. Discussion of different types of justice and of natural law formed a great part of the Ethics dictates and theses, and Grotius, Cumberland and Puffendorf were all referred to. In Physics the experiments of many contempory or recent scientists were described. Robert Boyle and the Royal Society were universally praised by the regents. the work of English, French and Dutch scientists featured prominently in the lectures from the 1660s onwards, and were bought for the libraries. Cartesian physics and cosmology were taught in the last quarter of the 17th century, but by the beginning of the 18th century many of the regents had gone over to Newtonianism.the politicl and religeous upheavals in 17th century Scotland affected staff appointments in the universities. many of the regents lost their posts in 1638 and during the Civil Wars, at the Restoration, and at the revolutioanry Settlement in 1689. Unorthodoxy in their dictates and theses was frowned on, and sometimes led to dismissal. Various commissioners tried to regulate what was taught in the universities, and in the 1690s a project for a uniform course made considerable headway. however, despite this interference on part of state and church, the universities managed to preserve a fair degree of autonomy, and both their statements in answer to the commission's proposals in the 1690s and the actual content of their dictates and theses show a concern to uphold their academic integrity. The courses in the Scottish universities were sufficiently similar to enable one to talk of 17th century Scottish university education in general terms, but the universities did not always agree amongst themselves, as their comments on each other's contributions to the uniform course show. Edinburgh seems generally to have been the most advanced of the universities in its teaching, Glasgow the least. the conclusion of this survey is that university education in the 17th century was by no means as consistently uninspired as is sometimes proposed. It is true that neither the system of regenting nor the troubled stare of the country in the 17th century were conductive to a high educational standard. Nevertheless, there is some evidence of new ideas in the dictates and theses from 1600 to the 1660s, and after that date many of the regents showed themselves to be conversant with new devlopments in all fields of philosophy. By the beginning of the 18th century the way had been paved for the intellectual achievements of that century in the universities

The Z decay width in the SMEFT:y(t) and lambda corrections at one loop

We calculate one loop $y_t$ and $\lambda$ dependent corrections to $\bar{\Gamma}_Z,\bar{R}_f^0$ and the partial $Z$ widths due to dimension six operators in the Standard Model Effective Field Theory (SMEFT), including finite terms. We assume $\rm CP$ symmetry and a $\rm U(3)^5$ symmetry in the UV matching onto the dimension six operators, dominantly broken by the Standard Model Yukawa matrices. Corrections to these observables are predicted using the input parameters $\{\hat{\alpha}_{ew}, \hat{M}_Z, \hat{G}_F, \hat{m}_t, \hat{m}_h\}$ extracted with one loop corrections in the same limit. We show that at one loop the number of SMEFT parameters contributing to the precise LEPI pseudo-observables exceeds the number of measurements. As a result the SMEFT parameters contributing to LEP data are formally unbounded when the size of loop corrections are reached until other data is considered in a global analysis. The size of these loop effects is generically a correction of order $\sim\%$ to leading effects in the SMEFT, but we find multiple large numerical coefficients in our calculation at this order. We use a $\rm \overline{MS}$ scheme, modified for the SMEFT, for renormalization. Some subtleties involving novel evanescent scheme dependence present in this result are explained.Comment: 38 pages + refs, 11 figures, v3: Acknowledgement updated with grant number

Implementing Uniform Curriculum to Increase Efficiency and Access to Simulation

• Using Standardized Patients (SPs) is effective in improving communication skills. • Conducting SP training can be cost prohibitive in terms of time and labor. • Demands of current curriculum created a need for an innovative and more efficient approach to meet new CLER requirement.https://knowledgeconnection.mainehealth.org/lambrew-retreat-2022/1039/thumbnail.jp

Code Blue! When a Simulation Isn’t a Simulation Anymore

Objectives: • To identify and remediate gaps responding to a medical emergency during a simulated event. • To provide a safe working environment for standardized patients and clinical staff.https://knowledgeconnection.mainehealth.org/lambrew-retreat-2022/1038/thumbnail.jp

Impact of practice on quality of life of those living with an indwelling urinary catheter - an international evaluation

After completing this education activity, the learner will be able to compare the characteristics and quality of life of patients living with a long-term indwelling urinary catheter in the United Kingdom and the United States where catheter care policies differ with respect to types and routes of catheterization and timing of catheter changes

Assessing the Performance of Agricultural Development Investments A Practical Guide using the SIPmath™ Standard

The global community must make significant investments to address climate change and build resilience in agricultural systems. Within climate-smart agriculture investment portfolios, all sizable projects face uncertainty and risk and must be adaptively managed to achieve success.[1]–[4]. This paper presents notes for calibrating a user-friendly tool to screen and compare investment options: The Climate-Smart Agriculture Investment Plan (CSAIP) Cost Benefit-Analysis (CBA) Tool. The CSAIP-CBA models a 20-year period following investment implementation and uses a probabilistic approach to account for uncertainty in project costs and benefits subject to risks and adoption barriers. The model includes measures for number of beneficiaries, adoption rates, estimated impacts, and budget and costs while also considering risks and GHG emissions. Implementation examples of the CSAIP-CBA tool are drawn from investment portfolios prepared for Ghana and Burkina Faso; these suggest that carbon pricing and adoption rate assumptions should be considered when prioritizing investments

Self-Reported Pain in Male and Female Iraq/Afghanistan-Era Veterans: Associations with Psychiatric Symptoms and Functioning

Objective. To examine pain symptoms and co-occurring psychiatric and functional indices in male and female Iraq/Afghanistan-era veterans. Design. Self-reported data collection and interviews of Iraq/Afghanistan-era veterans who participated in a multisite study of postdeployment mental health. Setting. Veterans were enrolled at one of four participating VA sites. Subjects. Two thousand five hundred eighty-seven male and 662 female Iraq/Afghanistan-era veterans. Methods. Nonparametric Wilcoxon rank tests examined differences in pain scores between male and female veterans. Chi-square tests assessed differences between male and female veterans in the proportion of respondents endorsing moderate to high levels of pain vs no pain. Multilevel regression analyses evaluated the effect of pain on a variety of psychiatric and functional measures. Results. Compared with males, female veterans reported significantly higher mean levels of headache (P \u3c 0.0001), muscle soreness (P \u3c 0.008), and total pain (P \u3c 0.0001), and were more likely to report the highest levels of headache (P \u3c 0.0001) and muscle soreness (P \u3c 0.0039). The presence of pain symptoms in Iraq/Afghanistan-era veterans was positively associated with psychiatric comorbidity and negatively associated with psychosocial functioning. There were no observed gender differences in psychiatric and functional indices when levels of pain were equated. Conclusions. Although female Iraq/Afghanistan-era veterans reported higher levels of pain than male veterans overall, male and female veterans experienced similar levels of psychiatric and functional problems at equivalent levels of reported pain. These findings suggest that pain-associated psychological and functional impacts are comparable and consequential for both male and female veterans

Antioxidant, antibacterial, and anti-SARS-CoV Activity of Commercial Products of \u3cem\u3eXylopia\u3c/em\u3e (\u3cem\u3eXylopia aethiopica\u3c/em\u3e)

Xylopia aethiopica (Annonaceae) is a spice and medicinal plant that grows wild in many West African countries (from Liberia to Nigeria) and is locally known as Guinea pepper, grains of Selim, hwentia and uda. The dried fruits are used as a flavoring for soups and traditionally in decoctions as an analgesic and anti-inflammatory, as well as a treatment for infections. The medicinal properties of the fruits are associated with the presence of phenolics and essential oil constituents. We studied the total phenols, total flavonoids, and antioxidant activity in different X. aethiopica extracts using spectrophotometry. We found variation in total phenolic and flavonoids and antioxidant capacity between different samples and different extraction solvents. Antibacterial activity against Escherichia coli and Bacillus subtilis were evaluated using a spectrophotometric assay and Kirby-Bauer test. Additionally, a pseudoviral cell-based assay was used to test the antiviral activity against severe acute respiratory syndrome coronaviruses (SARS-CoV-1 and SARS-CoV-2). High total phenolic and flavonoid content was correlated with high antioxidant capacity. Results of antibacterial tests indicated that one Xylopia extract potentially has strong antibacterial activity against gram-positive bacteria B. subtilis. The pseudoviral assay showed moderate antiviral activity against SARS-CoV-1 and SARS-CoV-2

Effectiveness of screening and brief alcohol intervention in primary care (SIPS trial): pragmatic cluster randomised controlled trial

Objective To evaluate the effectiveness of different brief intervention strategies at reducing hazardous or harmful drinking in primary care.The hypothesis was that more intensive intervention would result in a greater reduction in hazardous or harmful drinking. Design Pragmatic cluster randomised controlled trial.Setting Primary care practices in the north east and south east of England and in London.Participants 3562 patients aged 18 or more routinely presenting in primary care, of whom 2991 (84.0%) were eligible to enter the trial: 900(30.1%) screened positive for hazardous or harmful drinking and 756(84.0%) received a brief intervention. The sample was predominantly male (62%) and white (92%), and 34% were current smokers. Interventions Practices were randomised to three interventions, each of which built on the previous one: a patient information leaflet control group, five minutes of structured brief advice, and 20 minutes of brief lifestyle counselling. Delivery of the patient leaflet and brief advice occurred directly after screening and brief lifestyle counselling in a subsequent consultation. Main outcome measures The primary outcome was patients’ self reported hazardous or harmful drinking status as measured by the alcohol use disorders identification test (AUDIT) at six months. A negative AUDITresult (score <8) indicated non-hazardous or non-harmful drinking.Secondary outcomes were a negative AUDIT result at 12 months,experience of alcohol related problems (alcohol problems questionnaire),health utility (EQ-5D), service utilisation, and patients’ motivation to change drinking behaviour (readiness to change) as measured by a modified readiness ruler.Results Patient follow-up rates were 83% at six months (n=644) and 79% at 12 months (n=617). At both time points an intention to treat analysis found no significant differences in AUDIT negative status between the three interventions. Compared with the patient information leaflet group, the odds ratio of having a negative AUDIT result for briefa dvice was 0.85 (95% confidence interval 0.52 to 1.39) and for brief lifestyle counselling was 0.78 (0.48 to 1.25). A per protocol analysis confirmed these findings. Conclusions All patients received simple feedback on their screening outcome. Beyond this input, however, evidence that brief advice or brief lifestyle counselling provided important additional benefit in reducing hazardous or harmful drinking compared with the patient information leaflet was lacking