System Metaphor is one of the key practices of Extreme Programming (XP). Unfortunately, the System Metaphor practice is poorly understood, and is the practice XP teams most commonly choose to ignore. In this paper, we provide a small collection of patterns that teams can use to develop metaphors for their systems, and for evaluating system metaphors. We hope these patterns will encourage Extrem...

The Sairecabur volcano (5971 m), in the Atacama Desert, is a high-altitude extreme environment with high daily temperature variations, acidic soils, intense UV radiation, and low availability of water. Four different species of yeasts were isolated from this region using oligotrophic media, identified and characterized for their tolerance to extreme conditions. rRNA sequencing revealed high ide...

*Center for Population Biology, University of California, Davis, California 95616, U.S.A. [email protected] {Department of Ecology and Evolution, State University of New York at Stony Brook, Stony Brook, New York 117945245, U.S.A. [email protected] {Department of Ecology and Evolutionary Biology, University of Tennessee, Knoxville, Tennessee 37996, U.S.A. [email protected] Abstract

This paper focuses on the impact of long-term Antarctic conditions on cognitive processes. Behavioral responses and event-related potentials were recorded during an auditory distraction task and an attention network paradigm. Participants were members of the over-wintering crew at Concordia Antarctic Research Station. Due to the reduced partial pressure of oxygen this environment caused moderat...

The Everest Marathon in the Nepal Himalayas has been run every 18 months since 1987, from Gorak Shep near Everest Base Camp to Namche Bazaar. This is a 26.2 mile marathon run from a starting altitude of 5184 m above sea level down to 3664 m over exceptionally difficult terrain. The route is predominantly downhill, although there are two steep uphill sections, with the ground underfoot varying f...

The neurocognitive basis of the effect of long-term high altitude exposure on conflict control is unclear. Event related potentials (ERPs) were recorded in a flanker task to investigate the influence of high altitude on conflict control in the high-altitude group (who had lived at high altitude for three years but were born at low altitude) and the low-altitude group (living in low altitude onl...

Department of Pharmacology, Lagos State University College of Medicine, Ikeja, Lagos, Nigeria. Correspondence: T. A. John, Department of Pharmacology, Lagos State University College of Medicine, PMB 21266, Ikeja, Lagos. Email: [email protected] Tel: 234 7028338910 Abbreviations: SMC, Smooth muscle cell; CHAH, Chronic high altitude hypoxia; alpha SMA, alpha Smooth muscle actin; eNOS, endo...