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Article
Social mutilation in the Ponerine ant Diacamma: cues originate in the victims
In the queenless ponerine ant genus Diacamma, all workers eclose with a pair of innervated thoracic appendages termed gemmae. The gamergate (= mated egg laying worker) maintains reproductive monopoly by mutilatin...
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Article
Open AccessA new quality assurance package for hospital palliative care teams: the Trent Hospice Audit Group model
Cancer patients in hospitals are increasingly cared for jointly by palliative care teams, as well as oncologists and surgeons. There has been a considerable growth in the number and range of hospital palliativ...
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Article
Making sense of life: explaining biological development with models, metaphors and machines
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Article
Biographical article¶¶Jan Swammerdam on social insects: a view from the seventeenth century
The Dutch microscopist Jan Swammerdam (1637-1680) carried out the first systematic scientific study of social insects. In the late 1660s and 1670s Swammerdam made a series of observations of bees, ants, wasps...
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Chapter
Uncertainty in Distributed and Interoperable Spatial Information Systems
Many facets of spatial data representation inherently involve issues of accuracy and uncertainty. This problem is greatly magnified when considering the integration of spatial data from different sources, such...
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Chapter
Modeling the Hydrothermal Generation of Coals and Coal-Seam Gas
A two-dimensional computer program (HYDROMAT) for modeling the maturation of coal in sedimentary basins affected by hydrothermal circulation has been constructed. The program considers the effect of fluid flow...
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Chapter
Simulating the Conductive and Hydrothermal Maturation of Coal and Coal Seam Gas in the Bowen Basin, Australia
We model the hydrothermal maturation of hydrocarbons in the Bowen Basin of Australia with the program HYDROMAT (Lopez et al., these proceedings). HYDROMAT is used to determine the vitrinite reflectance and the...
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Article
Ka/Q band GaAs IMPATT amplifier technology
GaAs IMPATT diodes are capable of generating 2 to 3 W simultaneously with 18–22% efficiency in the 33 GHz to 46 GHz frequency band. The design of the amplifier circuits which utilize these devices is discussed...