This paper discusses a four-dimensional plus hysteresis autonomous chaotic circuit. The circuit dynamics is described by two symmetric four-dimensional linear equations connected to each other by hysteresis switchings. We transform the equation into Jordan form and derive theoretical formulas of its three-dimensional return map, its Jacobian matrix and its Jacobian. These formulas can be develo...

In a domain such as space technology, where robustness, mass, volume and power efficiency are key, biological organisms may provide inspiration for new systems with high performance. By using micro-technology processes, designers of space systems may take advantage of the millions of years over which miniaturised mechanisms in plants and animals have been optimised for survival. Space explorati...

We present new in terpretations of deglaciation i n M cM urdo Sound and the western Ross Sea, with observationally based reconstruct ions of interactions between East and West Antarct i c ice at the last glacial maximum ( LGM), 1 6 000, 1 2 000, 8000 and 4000 B P . At the LG M, East Antarct ic ice from M ulock Glacier spli t; one branch turned westward sout h of R oss Island b u t the other bra...

Intake of animals grazing grass pasture is in part infl uenced by canopy density. Our objective was to determine the vertical distribution of dry matter and neutral detergent fi ber (NDF) within temperate perennial grass swards. The study was conducted in 2004 and 2005 on a Plano silt loam (fi ne-silty, mixed, superactive, mesic Typic Argiudolls). When leaf height of each grass reached 25 cm in...

Bringing together conclusions from previous studies of social innovation in rural, local, multistakeholder and welfare contexts, this study aims to further develop the scientific insights into the specific mechanisms of rural social innovation, based on a case study of the Swedish part of the European project “Social empowerment in rural areas” (SEMPRE). By analyzing its aims and activities, cr...