Competition between groups often involves prizes that have both a public and a private component. The exact nature of the prize not only affects the strategic choice of the sharing rules determining its allocation but also gives rise to an interesting phenomenon not observed when the prize is either purely public or purely private. Indeed, we show that in the two-groups contest, for most degree...

background: anxiety, depression, and other adverse psychological reactions are often observed in elderly hypertensive patients. appropriate exercise is a safe form of adjuvant therapy without causing side effects among these patients, with consistent effects on patients’ mental health. in this study, a collective exercise intervention experiment was conducted to evaluate the mental health of el...

background: to suggest south india ct diagnostic reference levels (drls) by collecting radiation doses for the most commonly performed ct examinations. materials and methods: a pilot study investigated the most frequent ct examinations. 110 ct sites were asked to complete a survey booklet to allow the recording of ct parameters for each of 3 ct examinations during a 1 year time period. dose dat...