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In monadic programming, datatypes are presented as free algebras, generated by data values, and by the algebraic operations and equations capturing some computational effects. These algebras are free in the sense that they satisfy just the equations imposed by their algebraic theory, and remain free of any additional equations. The consequence is that they do not admit quotient types. This is, of...
We are discussing a framework for formally modeling and analyzing the security of trusted boot processes. The presented framework is based on actor networks. It considers essential cyber-physical features of the system and how to check the authenticity of the software it is running.
Back in the 1960s Goldschmidt presented a variation of Newton-Raphson iterations that are the basis for a division and a square root algorithm that are well suited for pipelining. The problem in using Goldschmidt's algorithms is to present an error analysis that enables one to save hardware by using just the right amount of precision for intermediate calculations while still providing correct rounding...
We are combining ACL2 theorem proving with an off-the-shelf commercial model checker to verify a functional unit that would have been hard to verify by just using either of the two approaches. It is essential that our combination of the two tools allows for results of either of the tools to be used for the other tool in both directions. The unit is a packed integer multiplier that can handle a variety...
The x86 instruction set has historically grown to have a very complex definition. Simply enumerating a representative for every type of instruction can already be challenging, but does not consider the allowed redundancies in instruction encoding, the variation of operand, addressing and constant choices and the generation of illegal instruction words. We are proposing a framework for directly targeting...
The AMD Jaguar x86 core uses a fully-synthesized, 128-bit native floating-point unit (FPU) built as a co-processor model. The Jaguar FPU supports several x86 ISA extensions, including x87, MMX, SSE1 through SSE4.2, AES, CLMUL, AVX, and F16C instruction sets. The front end of the unit decodes two complex operations per cycle and uses a dedicated renamer (RN), free list (FL), and retire queue (RQ) for...
In this paper, we present the design of prototypes and experimental results from implementing these prototypes to demonstrate a novel online diagnostic technique for probing the integrity of concentric neutral wires (CNs) in underground power distribution cables. Our technique uses anisotropic magneto-resistive (AMR) magnetic sensors that rotate around the circumference of the cable and record the...
We describe an electric current monitoring system that can be used to non-intrusively measure individual loads on a circuit breaker panel in residential and commercial settings. The proximity-based piezoelectromagnetic (PEM) sensor uses permanent magnets to couple to the electric current in the circuit to be measured, and hence requires no galvanic connection to the circuits. This paper describes...
On behalf of the organizing and program committee, we would like to welcome you to the 28th IEEE International Conference on Computer Design 2010. The International Conference on Computer Design (ICCD) encompasses a wide range of technical topics and provides an ideal environment to discuss practical and theoretical work that enables cross-pollination. The ICCD venue and program reflect this goal...
In this paper, we present a new method to diagnose the integrity of concentric neutral wires in underground power distribution cables. This method uses a commercially available 3-axis anisotropic magnetoresistive (AMR) magnetic field sensor chip. The AMR sensor is passed once along the energized cable axially, and the cable's 3-axis magnetic field is plotted as a function of position over the cable...
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