Contrast and lustre:a model that accounts for eleven different forms of contrast discrimination in binocular vision

Our goal here is a more complete understanding of how information about luminance contrast is encoded and used by the binocular visual system. In two-interval forced-choice experiments we assessed observers' ability to discriminate changes in contrast that could be an increase or decrease of contrast in one or both eyes, or an increase in one eye coupled with a decrease in the other (termed IncDec). The base or pedestal contrasts were either in-phase or out-of-phase in the two eyes. The opposed changes in the IncDec condition did not cancel each other out, implying that along with binocular summation, information is also available from mechanisms that do not sum the two eyes' inputs. These might be monocular mechanisms. With a binocular pedestal, monocular increments of contrast were much easier to see than monocular decrements. These findings suggest that there are separate binocular (B) and monocular (L,R) channels, but only the largest of the three responses, max(L,B,R), is available to perception and decision. Results from contrast discrimination and contrast matching tasks were described very accurately by this model. Stimuli, data, and model responses can all be visualized in a common binocular contrast space, allowing a more direct comparison between models and data. Some results with out-of-phase pedestals were not accounted for by the max model of contrast coding, but were well explained by an extended model in which gratings of opposite polarity create the sensation of lustre. Observers can discriminate changes in lustre alongside changes in contrast.

Diageo's 'Stop Out of Control Drinking' campaign in Ireland: an analysis

Background: It has been argued that the alcohol industry uses corporate social responsibility activities to influence policy and undermine public health, and that every opportunity should be taken to scrutinise such activities. This study analyses a controversial Diageo-funded ‘responsible drinking’ campaign (“Stop out of Control Drinking”, or SOOCD) in Ireland. The study aims to identify how the campaign and its advisory board members frame and define (i) alcohol-related harms, and their causes, and (ii) possible solutions. Methods: Documentary analysis of SOOCD campaign material. This includes newspaper articles (n = 9), media interviews (n = 11), Facebook posts (n = 92), and Tweets (n = 340) produced by the campaign and by board members. All material was coded inductively, and a thematic analysis undertaken, with codes aggregated into sub-themes. Results: The SOOCD campaign utilises vague or self-defined concepts of ‘out of control’ and ‘moderate’ drinking, tending to present alcohol problems as behavioural rather than health issues. These are also unquantified with respect to actual drinking levels. It emphasises alcohol-related antisocial behaviour among young people, particularly young women. In discussing solutions to alcohol-related problems, it focuses on public opinion rather than on scientific evidence, and on educational approaches and information provision, misrepresenting these as effective. “Moderate drinking” is presented as a behavioural issue (“negative drinking behaviours”), rather than as a health issue. Conclusions: The ‘Stop Out of Control Drinking’ campaign frames alcohol problems and solutions in ways unfavourable to public health, and closely reflects other Diageo Corporate Social Responsibility (CSR) activity, as well as alcohol and tobacco industry strategies more generally. This framing, and in particular the framing of alcohol harms as a behavioural issue, with the implication that consumption should be guided only by self-defined limits, may not have been recognised by all board members. It suggests a need for awareness-raising efforts among the public, third sector and policymakers about alcohol industry strategies

Efficacy and safety of out-of-hospital intravenous metoprolol administration in anterior ST-segment elevation acute myocardial infarction: insights from the METOCARD-CNIC trial

We seek to examine the efficacy and safety of prereperfusion emergency medical services (EMS)–administered intravenous metoprolol in anterior ST-segment elevation myocardial infarction patients undergoing eventual primary angioplasty. This is a prespecified subgroup analysis of the Effect of Metoprolol in Cardioprotection During an Acute Myocardial Infarction trial population, who all eventually received oral metoprolol within 12 to 24 hours. We studied patients receiving intravenous metoprolol by EMS and compared them with others treated by EMS but not receiving intravenous metoprolol. Outcomes included infarct size and left ventricular ejection fraction on cardiac magnetic resonance imaging at 1 week, and safety by measuring the incidence of the predefined combined endpoint (composite of death, malignant ventricular arrhythmias, advanced atrioventricular block, cardiogenic shock, or reinfarction) within the first 24 hours. From the total population of the trial (N=270), 147 patients (54%) were recruited during out-of-hospital assistance and transferred to the primary angioplasty center (74 intravenous metoprolol and 73 controls). Infarct size was smaller in patients receiving intravenous metoprolol compared with controls (23.4 [SD 15.0] versus 34.0 [SD 23.7] g; adjusted difference –11.4; 95% confidence interval [CI] –18.6 to –4.3). Left ventricular ejection fraction was higher in the intravenous metoprolol group (48.1% [SD 8.4%] versus 43.1% [SD 10.2%]; adjusted difference 5.0; 95% CI 1.6 to 8.4). Metoprolol administration did not increase the incidence of the prespecified safety combined endpoint: 6.8% versus 17.8% in controls (risk difference –11.1; 95% CI –21.5 to –0.6). Out-of-hospital administration of intravenous metoprolol by EMS within 4.5 hours of symptom onset in our subjects reduced infarct size and improved left ventricular ejection fraction with no excess of adverse events during the first 24 hours.

Out of touch

In June 2016, an Australian on minimum wage earned $656.90 per week. That is $34,159 a year, before tax. According to the Australian Tax Office’s ‘simple tax calculator’, the tax owed would be $3030, leaving a take-home salary of $31,128. Let’s call it $600 a week.It’s fair to say that many of us would struggle to make ends meet on that income – $600 a week does not go very far in modern Australia.

At home/out of place: young people’s multicultural belongings

What does it mean to come of age in an era of anti-multiculturalism? How does such an environment shape the ways young people of diverse backgrounds come to feel “at home”-in the nation, in the city, in their neighbourhoods, and in their national identity? Discussing findings from a study of youth in the multicultural suburbs of five Australian cities, this chapter explores how the politics of belonging is lived through the spatial practices of everyday civic life for those who have grown up during the multiculturalism backlash of the 1990s and 2000s. It examines the contradictory picture that emerges of a new generation claiming a right to multicultural citizenship and forging productive diversity within the urban multiculture, and yet simultaneously positioned as “out of place” within civic life.

Queer pedagogies out of place and time: redrawing the boundaries of youth, sexual and gender difference, and education

For this contribution to the "Cartographies" section of the special issue on "Mapping Queer Bioethics," the author focuses on the concept of spatialized time as made material in the location of historical places, in particular as it relates to a reconsideration of approaches to Australian queer/LGBT youth education. Accordingly, the author employs historical maps as illustrative examples of spatialized time, reflecting on the relationships between historical knowledge and queer youth education.

Field ‘work’ vs ‘feel’ trip : approaches to out-of-class experiences in geography education

Fieldwork is viewed as integral to geography teaching and acclaimed benefits often include holistic, student-driven learning, where all the senses are engaged and the impacts are more than cognitive. While these benefits are often assumed, in this paper, I argue that geography fieldwork in schools is often teacher-led and focused on the intellectual task of knowledge acquisition and skill development. Based on a qualitative content analysis of examples of fieldwork in a state geography teachers’ journal, I assert that the affective and sensory dimensions, are often used to promote the benefits of fieldwork, but seldom explicitly addressed through fieldwork pedagogy and learning activities in school geography. I contend that this is a missed opportunity for a deeper, more embodied and critical engagement with, and response to, the places visited.

Out-of-hours co-operatives: General practitioner satisfaction with governance and working arrangements

Objective. General practice co-operatives have led to significant improvements in quality of life for general practitioners. Little is known about general practitioners’ own experiences with the working arrangements and governance of co-operatives. This study investigates GP satisfaction, the working environment, governance and future developments in co-operatives. Methods. A questionnaire was sent to GPs in two co-operatives in the Republic of Ireland, covering mixed urban and rural areas. Results. Of 221 GPs in the co-operatives, 82% responded and confirmed the co-operatives’ positive effects on their lives. However, 57% still received requests for out-of-hours care while off duty, most commonly from patients who preferred to see their own doctor. Half felt overburdened by out-of-hours work, especially those over 40 y of age. Twenty-five per cent were dissatisfied with the GP complaints mechanism. The majority (63%) would prefer a GP/ health board partnership for the organization of out of hours, while 23% wanted sole responsibility. GPs indicated a strong need for better ancillary services such as nursing, mental health, dentistry, pharmacy and social work. Access to records is an important issue in terminal care and mental illness. Conclusion. While GP co-operatives are a success story for general practice, they will work better for general practitioners and their patients if nursing, mental health, dentistry, pharmacy and social services are improved. Support and training is needed in mental health, palliative and emergency care to increase competence and reduce stress. GPs are willing to work with health authorities in further co-operative development. More attention needs to be paid to the complaints and suggestions of GPs in the running and governance of their co-operatives.

Chemical characteristics of the clusters and production of 'BRS Clara' grapevine under protected cultivation during out of season crop.

2011