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High-speed Multiplier Design Using Multi-Operand MultipliersNezhad, Mohammad Reza Reshadi, Navi, Kaivan 01 April 2012 (has links)
Multipliers are used in most arithmetic computing
systems such as 3D graphics, signal processing, and etc. It
is inherently a slow operation as a large number of partial
products are added to produce the result. There has been
much work done on designing multipliers [1]-[6]. In first
stage, Multiplication is implemented by accumulation of
partial products, each of which is conceptually produced
via multiplying the whole multi-digit multiplicand by a
weighted digit of multiplier. To compute partial products,
most of the approaches employ the Modified Booth
Encoding (MBE) approach [3]-[5], [7], for the first step
because of its ability to cut the number of partial products
rows in half. In next step the partial products are reduced
to a row of sums and a row of caries which is called
reduction stage. / Multiplication is one of the major bottlenecks in most digital
computing and signal processing systems, which depends on the
word size to be executed. This paper presents three deferent
designs for three-operand 4-bit multiplier for positive integer
multiplication, and compares them in regard to timing, dynamic
power, and area with classical method of multiplication
performed on today architects. The three-operand 4-bit
multipliers structure introduced, serves as a building block for
three-operand multipliers in general
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THE HUMAN HEARTH AND THE DAWN OF MORALITYRappaport, Margaret Boone, Corbally, Christopher 12 1900 (has links)
Stunned by the implications of Colage's analysis of the cultural activation of the brain's Visual Word Form Area and the potential role of cultural neural reuse in the evolution of biology and culture, the authors build on his work in proposing a context for the first rudimentary hominin moral systems. They cross-reference six domains: neuroscience on sleep, creativity, plasticity, and the Left Hemisphere Interpreter; palaeobiology; cognitive science; philosophy; traditional archaeology; and cognitive archaeology's theories on sleep changes in Homo erectus and consequences for later humans. The authors hypothesize that the human genome, when analyzed with findings from neuroscience and cognitive science, will confirm the evolutionary timing of an internal running monologue and other neural components that constitute moral decision making. The authors rely on practical modern philosophers to identify continuities with earlier primates, and one major discontinuitysome bright white moral line that may have been crossed more than once during the long and successful tenure of Homo erectus on Earth.
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