Analog Computation

MacLennan, Bruce J.

doi:10.1007/978-1-4939-6883-1_19

Cited by 10 publications

(17 citation statements)

References 59 publications

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“…We now focus our attention on how the obtained reflection coefficient, calculated for various incident angles, can be mapped onto a transfer function in spatial Fourier domain. As described in [31], one can write the relation between the wave-vector kx and incident angle θ as (2) Employing the above equation, one may conveniently map the reflection coefficient onto its corresponding transfer function in wave-vector space. Shown in Fig.…”

Section: Spatial Differentiationmentioning

confidence: 99%

“…The idea of analog computation dates back to the early 19th century, when a number of mechanical and electronic computing machines intended for simple mathematical operations such as differentiation or integration were developed [1,2]. Such analog computing devices were then totally overshadowed by the emergence of their digital counterparts in the second half of 20th century, as they could not compete with the speed and reliability of digital data processors [3].…”

Section: Introductionmentioning

confidence: 99%

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Performing mathematical operations using high-index acoustic metamaterials

Zangeneh-Nejad

Fleury

2018

New J. Phys.

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The recent breakthrough in metamaterial-based optical computing devices (2014 Science 343 160) has inspired a quest for similar systems in acoustics, performing mathematical operations on sound waves. So far, acoustic analog computing has been demonstrated using thin planar metamaterials, carrying out the operator of choice in Fourier domain. These so-called filtering metasurfaces, however, are always accompanied with additional Fourier transform sub-blocks, enlarging the computing system and preventing its applicability in miniaturized architectures. Here, employing a simple high-index acoustic slab waveguide, we propose a highly compact and potentially integrable acoustic computing system and demonstrate its proper functioning by numerical simulations. The system directly performs mathematical operation in spatial domain and is therefore free of any Fourier bulk lens. Such compact computing system is highly promising for various applications including high throughput image processing, ultrafast equation solving, and real time signal processing.

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Section: Spatial Differentiationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performing mathematical operations using high-index acoustic metamaterials

Zangeneh-Nejad

Fleury

2018

New J. Phys.

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“…Large parts of these layers are often not made explicit or represented in a computer. In fact, one may consider LBGs as primary examples for the mingling of digital and analog computation [22], in which the human environment takes over important roles in activities not necessarily represented in a digital form.…”

Section: A Layered Model Of Game Localizationmentioning

confidence: 99%

(Re-)Localization of Location-Based Games

Scheider

Kiefer

2017

Advances in Geographic Information Science

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While location-based games (LBGs) have been around for some time, only few of them have succeeded in attracting a larger number of players. One reason is the difficulty of suitable embedding of game concepts in an environment. In order to reach players from different places, LBG concepts need to be relocalized in a way which preserves the particular attractiveness of a game. What are criteria for high-quality (re-)localization? While the problem has been recognized in the literature, a systematic derivation of computational criteria is missing. In this chapter, we propose three novel criteria of game localization: playability, breakability, and authenticity. They are based on consistency and similarity measures in a 3-tier model of game localization, understood as a mapping of game actions and narratives into environmental affordances. We illustrate the use of the criteria in terms of a simple conquer game with two different narratives and two different environmental embeddings, as well as with an existing multi-player geogame.

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“…In the cell, a controller has been shown to be implemented in an analog fashion where the signal is analog (i.e., not quantized into a digital format, such as a silicon-based computing system) and the data input stream is continuous time (i.e., not broken into steps governed by a global clock, such as a modern CPU). Contemporary controllers of this form were referred to as analog computers and have a long history prior to the digital revolution [54]. The ODEs are then modeled in the form of an analog computer with appropriate signal conditioning applied to highlight the key signal used in the processing.…”

Section: Control Systemmentioning

confidence: 99%

Survey of Engineering Models for Systems Biology

Reeves

Hrischuk²

2016

Computational Biology Journal

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In recent years, the field of systems biology has emerged from a confluence of an increase both in molecular biotechnology and in computing storage and power. As a discipline, systems biology shares many characteristics with engineering. However, before the benefits of engineering-based modeling formalisms and analysis tools can be applied to systems biology, the engineering discipline(s) most related to systems biology must be identified. In this paper, we identify the cell as an embedded computing system and, as such, demonstrate that systems biology shares many aspects in common with computer systems engineering, electrical engineering, and chemical engineering. This realization solidifies the grounds for using modeling formalisms from these engineering subdisciplines to be applied to biological systems. While we document several examples where this is already happening, our goal is that identifying the cell as an embedded computing system would motivate and facilitate further discovery through more widespread use of the modeling formalisms described here.

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Analog Computation

Cited by 10 publications

References 59 publications

Performing mathematical operations using high-index acoustic metamaterials

Performing mathematical operations using high-index acoustic metamaterials

(Re-)Localization of Location-Based Games

Survey of Engineering Models for Systems Biology

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