Parasitic twins, a specific type of conjoined twins [6], occur when one twin ceases development during gestation [7] and becomes vestigial to the fully formed dominant twin, called the autositic twin. The underdeveloped twin is called parasitic because it is only partially formed, is not functional, or is wholly dependent on the autositic twin. In most cases, the phenotype of parasitic twins is...

This paper focuses on protocols for human smartcard interaction which allow the user to authorise individual smartcard transactions whilst not sacri cing useability or security In the past protocols for secure transactions have traded o useabil ity against security whereas the protocols presented here are designed so that they tradeo security against hardware complexity and always give high use...

Parasitic twins, a specific type of conjoined twins [6], occur when one twin ceases development during gestation [7] and becomes vestigial to the fully formed dominant twin, called the autositic twin. The underdeveloped twin is called parasitic because it is only partially formed, is not functional, or is wholly dependent on the autositic twin. In most cases, the phenotype of parasitic twins is...

PARASITIC ANIMALS. By Geoffrey Lapage. Cambridge, Cambridge University Press, 1951. xxi + 351 pp. $4.00. Parasitic animals is a consideration of parasitism as a way of life for animals. The major portion of the book covers three topics: types of life cycles, effects of this mode of life upon parasites, and effects of parasites upon their hosts. The parasites whose life cycles are discussed all ...

Parasitic twins, a specific type of conjoined twins [6], occur when one twin ceases development during gestation [7] and becomes vestigial to the fully formed dominant twin, called the autositic twin. The underdeveloped twin is called parasitic because it is only partially formed, is not functional, or is wholly dependent on the autositic twin. In most cases, the phenotype of parasitic twins is...