Tra generazioni

Type Data tra c Replacement tra c Coherence tra cUMA

Shared-bus multiprocessors represent a mainstream of accepted and commercially viable computer systems. However, as microprocessors become faster and demand more bandwidth, the already limited scalability of shared-bus decreases even further. As an eeort, not a mutually exclusive but rather a complementary to developing better backplane bus, this paper considers adapting distributed shared-memo...

Modelli Con Orizzonte Infinito Modelli Con Generazioni Sovrapposte

X-tra! X-tra! News from the mouse X chromosome.

X chromosome inactivation (XCI) is the phenomenon through which one of the two X chromosomes in female mammals is silenced to achieve dosage compensation with males. XCI is a highly complex, tightly controlled and developmentally regulated process. The mouse undergoes two forms of XCI: imprinted, which occurs in all cells of the preimplantation embryo and in the extraembryonic lineage, and rand...

Evaporative tra$c hydrocarbon emissions, tra$c CO and speciated HC tra$c emissions from the city of Athens

Quasi-continuous measurements of NO x , CO and C 5 }C 12 hydrocarbons made during the MEDCAPHOT-TRACE experiment in a street canyon with heavy tra$c load were used to estimate the CO/NO x and 36 individual NMHC/NO x tra$c emission ratios in the Athens basin. A tra$c emission inventory has been compiled for Athens and aspects of this inventory were tested against measurements. The results indica...

Metrics for Tra c Analysis

This paper considers systems for Traac Analysis Prevention (TAP) in a theoretical model. It considers TAP based on padding and rerouting of messages and describes the eeects each has on the diierence between the actual and the observed traac matrix (TM). The paper introduces an entropy-based approach to the amount of uncertainty a global passive adversary has in determining the actual TM, or al...