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Communications of the ACM

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Authentication Using Pulse-Response Biometrics
From Communications of the ACM

Authentication Using Pulse-Response Biometrics

We propose a new biometric based on the human body's response to an electric square pulse signal, called pulse-response.

From Communications of the ACM

Technical Perspective: Cleaning Up Flaws in TLS Implementations

One unfortunate fact about protocols is that as they get older and applied to more scenarios — and TLS is used basically everywhere — they tend to gain weight....

A Messy State of the Union
From Communications of the ACM

A Messy State of the Union: Taming the Composite State Machines of TLS

We systematically test popular TLS implementations and find unexpected transitions in many of their state machines that have stayed hidden for years. We show how...

From Communications of the ACM

Technical Perspective: Mapping the Universe

"HACC: Extreme Scaling and Performance Across Diverse Architectures" describes the Hardware/Hybrid Accelerated Cosmology Code (HACC) framework, which uses a novel...

HACC
From Communications of the ACM

HACC: Extreme Scaling and Performance Across Diverse Architectures

In this Research Highlight, we demonstrate the success of HACC on two very different machines, the CPU/GPU system Titan and the BG/Q systems Sequoia and Mira, attaining...

From Communications of the ACM

Technical Perspective: Magnifying Motions the Right Way

"Eulerian Video Magnification and Analysis" demonstrates that phase differences at a given frequency band, due to subtle motions in a video, can be independently...

Eulerian Video Magnification and Analysis
From Communications of the ACM

Eulerian Video Magnification and Analysis

We present Eulerian Video Magnification, a computational technique for visualizing subtle color and motion variations in ordinary videos by making the variations...

From Communications of the ACM

Technical Perspective: 3D Image Editing Made Easy

The authors of "Extracting 3D Objects from Photographs Using 3-Sweep" present an important step toward achieving 3D editing.

Extracting 3D Objects from Photographs Using 3-Sweep
From Communications of the ACM

Extracting 3D Objects from Photographs Using 3-Sweep

We introduce an interactive technique to extract and manipulate simple 3D shapes in a single photograph.

From Communications of the ACM

Technical Perspective: The Chemistry of Software-Defined Batteries

A time-tested principle in computer systems design is to use an interface to separate an abstraction from its implementation. "Software-Defined Batteries" represents...

Software-Defined Batteries
From Communications of the ACM

Software-Defined Batteries

In this paper, we present a new hardware-software system, called Software Defined Battery, which allows system designers to integrate batteries of different chemistries...

From Communications of the ACM

Technical Perspective: FPGA Compute Acceleration is First About Energy Efficiency

"A Reconfigurable Fabric for Accelerating Large-Scale Datacenter Services" presents a research deployment of Field Programmable Gate Arrays (FPGAs) in a Microsoft...

A Reconfigurable Fabric for Accelerating Large-Scale Datacenter Services
From Communications of the ACM

A Reconfigurable Fabric for Accelerating Large-Scale Datacenter Services

We describe a medium-scale deployment of a composable, reconfigurable hardware fabric on a bed of 1,632 servers, and measure its effectiveness in accelerating the...

From Communications of the ACM

Technical Perspective: If I Could Only Design One Circuit . . .

"DianNao Family: Energy-Efficient Hardware Accelerators for Machine Learning" shows a deep understanding of both neural net implementations and the issues in computer...

DianNao Family
From Communications of the ACM

DianNao Family: Energy-Efficient Hardware Accelerators for Machine Learning

We introduce a series of hardware accelerators (i.e., the DianNao family) designed for Machine Learning (especially neural networks), with a special emphasis on...

From Communications of the ACM

Technical Perspective: The Power of Parallelizing Computations

"Efficient Parallelization Using Rank Convergence in Dynamic Programming Algorithms" shows how some instances of dynamic programming can be effectively parallelized...

Efficient Parallelization Using Rank Convergence in Dynamic Programming Algorithms
From Communications of the ACM

Efficient Parallelization Using Rank Convergence in Dynamic Programming Algorithms

This paper proposes an efficient parallel algorithm for an important class of dynamic programming problems that includes Viterbi, Needleman-Wunsch, Smith-Waterman...

From Communications of the ACM

Technical Perspective: Naiad

"Incremental, Iterative Data Processing with Timely Dataflow" describes Naiad, which combines three classes of dataflow systems, supporting high-throughput batch...

Incremental, Iterative Data Processing with Timely Dataflow
From Communications of the ACM

Incremental, Iterative Data Processing with Timely Dataflow

We describe the timely dataflow model for distributed computation and its implementation in the Naiad system. 

From Communications of the ACM

Technical Perspective: Jupiter Rising

As "Jupiter Rising" makes clear, many of the Internet mechanisms for maintaining large-scale networks are suboptimal when the datacenter is largely homogeneous,...
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