منابع مشابه
Renewing Cryptographic Timestamps
This paper shows that the scheme described in Haber and Stornetta [Haber and Stornetta Jr., 1994] for extending the validity of a cryptographic timestamp for a Time Stamping Service contains security shortcomings. A modification is proposed to rectify the identified shortcomings.
متن کاملJacob Ross
How is what an agent ought to do related to what an agent ought to prefer that she does? More precisely, suppose we know what an agent’s preference ordering ought to be over the outcomes of performing the various courses of action open to her. Can we infer from this information how she ought to act, and if so, how can we infer it? One view (which, for convenience, I will call ‘actualism’) is th...
متن کاملRonald Ross
The British race can claim with every truth that it has conferred many benefits upon this country; had it conferred no other than the gift of western medicine, the people of the sub-continent might still rise up and call it blessed. Of all the blessings which western medicine has been able to confer, none are surpassed by those which originate from the work of Sir Ronald Ross, k.c.b., k.c.m.g.,...
متن کاملRoss procedure
INTRODUCTION In 1967 Donald Ross introduced the subcoronary Ross procedure consisting of transplantation of the autologous pulmonary valve into aortic position. We describe our 15-year experience in Ross procedures. METHODS 576 subcoronary operations have been performed (436 male and 140 female patients); the mean age was 45±11.9 years. (range, 13 to 70 years). The mean follow-up was 7±4.2 ye...
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ژورنال
عنوان ژورنال: Urban History Review
سال: 1993
ISSN: 0703-0428,1918-5138
DOI: 10.7202/1016723ar