scholarly journals A Reconfigurable Logic Cell Based on a Simple Dynamical System

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Lixiang Li ◽  
Chunyu Yang ◽  
Sili Hui ◽  
Wenwen Yu ◽  
Jürgen Kurths ◽  
...  
Keyword(s):  
Dynamical System ◽  
Logic Gate ◽  
Dynamic Logic ◽  
Logic Gates ◽  
Transformation Method ◽  
General Purpose ◽  
Reconfigurable Logic ◽  
Computer Chips ◽  
Threshold Mechanism ◽  
Logic Functions

This paper introduces a new scheme to achieve a dynamic logic gate which can be adjusted flexibly to obtain different logic functions by adjusting specific parameters of a dynamical system. Based on graphical tools and the threshold mechanism, the distribution of different logic gates is studied, and a transformation method between different logics is given. Analyzing the performance of the dynamical system in the presence of noise, we discover that it is resistant to system noise. Moreover, we find some part of the system can be considered as a leaky integrator which has been already widely applied in engineering. Finally, we provide a proof-of-principle hardware implementation of the proposed scheme to illustrate its effectiveness. With the proposed scheme in hand, it is convenient to build the flexible, robust, and general purpose computing devices such as various network coding routers, communication encoders or decoders, and reconfigurable computer chips.

scholarly journals Multifunctional Logic Gate by Means of Nanodot Array with Different Arrangements

2013 ◽  
Vol 2013 ◽  
pp. 1-7
Author(s):  
Yasuo Takahashi ◽  
Shinichiro Ueno ◽  
Masashi Arita
Keyword(s):  
Logic Gate ◽  
Logic Gates ◽  
Nanodot Array ◽  
Nanodot Arrays ◽  
Single Electronics ◽  
Positive Sense ◽  
Negative Effect ◽  
Device Applications ◽  
Logic Functions ◽  
Exclusive Or

Multifunctional logic gate devices consisting of a nanodot array are studied from the viewpoint of single electronics. In a nanodot array, the dots come in a random variety of sizes, which sometimes has a negative effect on the performance of electrical device applications. Here, this feature is used in a positive sense to achieve higher functionality in the form of flexible logic gates with low power consumption in which the variability of logic functions is guaranteed. Nanodot arrays with two input gates and one control gate in a variety of arrangements are considered, in which the two-input logic functions (such as NAND, NOR, or exclusive-OR (XOR) gates) are selected by changing the voltage applied to the control gate. To ensure the flexibility of the device, it is important to guarantee the performance with any one of the six important logic functions: NAND, AND, NOR, OR, XOR, and XNOR. We ran a selection simulation using a nanodot array consisting of six nanodots with different dot arrangements to clarify the relation between the variability of the logic functions and the dot arrangements.

scholarly journals Contextual dependencies expand the re-usability of genetic inverters

2020 ◽  
Author(s):  
Huseyin Tas ◽  
Lewis Grozinger ◽  
Ruud Stoof ◽  
Victor de Lorenzo ◽  
Angel Goñi-Moreno
Keyword(s):  
Synthetic Biology ◽  
Computational Analysis ◽  
Logic Gate ◽  
Logic Gates ◽  
Boolean Logic ◽  
Regulatory Proteins ◽  
Genetic Circuits ◽  
Genetic Construct ◽  
Genetic Components ◽  
Logic Functions

The design and implementation of Boolean logic functions in living cells has become a very active field within synthetic biology. By controlling networks of regulatory proteins, novel genetic circuits are engineered to generate predefined output responses. Although many current implementations focus solely on the genetic components of the circuit, the host context in which the circuit performs is crucial for its outcome. Here, we characterise 20 genetic NOT logic gates (inverters) in up to 7 bacterial-based contexts each, to finally generate 135 different functions. The contexts we focus on are particular combinations of four plasmid backbones and three hosts, two Escherichia coli and one Pseudomonas putida strains. Each NOT logic gate shows seven different logic behaviours, depending on the context. That is, gates can be reconfigured to fit response requirements by changing only contextual parameters. Computational analysis shows that this range of behaviours improves the compatibility between gates, because there are considerably more possibilities for combination than when considering a unique function per genetic construct. Finally, we address the issue of interoperability and portability by measuring, scoring, and comparing gate performance across contexts. Rather than being a limitation, we argue that the effect of the genetic background on synthetic constructs expand the scope of the functions that can be engineered in complex cellular environments, and advocate for considering context as a fundamental design parameter for synthetic biology.

Reconfigurable Logic Gates Based on Programable Multistable Mechanisms

2020 ◽  
Vol 12 (2) ◽  
Author(s):  
Mohamed Zanaty ◽  
Hubert Schneegans ◽  
Ilan Vardi ◽  
Simon Henein
Keyword(s):  
Logic Gate ◽  
Beam Theory ◽  
Logic Gates ◽  
Building Blocks ◽  
Reconfigurable Logic ◽  
Logical Function ◽  
Element Analysis ◽  
Binary Logic ◽  
Geometric Data ◽  
The Stability

Abstract Binary logic gates are building blocks of computing machines, in particular, electronic computers. One variant is the programable logic gate, also known as the reconfigurable logic gate, in which the logical function implemented can be modified. In this paper, we construct a mechanism to implement a reconfigurable logic gate. This mechanism is based on the concept of programable multistable mechanisms which we introduced in previous work. The application of a programable multistable mechanism is superior to the different bistable mechanisms previously used to implement logic gates since a single mechanism can be used to implement several logic functions. Our reconfigurable logic gates use a novel geometric construction where the geometric data depend on the stability behavior of the mechanism. There are 16 binary logic gates and our construction can theoretically produce nine of these and our physical model produces six logical gates. Input and output of the mechanism are displacement and the mechanisms can be combined serially, i.e., output of a mechanism is an input for another. We show that we can implement nor and nand gates, so combinations of our mechanism can express any logical function. The mechanism is therefore theoretically universal, i.e., implement any computation. We give an analytic model of the mechanism based on Euler–Bernoulli beam theory to find the geometric data, then validate it using finite element analysis and experimental demonstration.

scholarly journals Reliability Analysis of Dynamic Fault Tree Based on Binary Decision Diagrams for Explosive Vehicle

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Guang-Jun Jiang ◽  
Zong-Yuan Li ◽  
Guan Qiao ◽  
Hong-Xia Chen ◽  
Hai-Bin Li ◽  
...  
Keyword(s):  
Markov Model ◽  
Logic Gate ◽  
Fault Tree ◽  
Dynamic Logic ◽  
Logic Gates ◽  
Transition Process ◽  
Modular Approach ◽  
Combinational Logic ◽  
Binary Decision ◽  
Dynamic Fault Tree

Dynamic fault tree is often used to analyze system reliability. The Markov model is a commonly used method, which can accurately reflect the relationship between the state transition process and the dynamic logic gate transfer in the dynamic fault tree. When the complexity or scale of system is increasing, the Markov model encountered a problem of state space explosion leading to increase troubles. To solve the above problems, a modular approach is needed. Based on the modular approach, a hybrid fault module was researched in this paper. Firstly, the stackable fault subtree containing complex static/dynamic logic gate is transformed into four common combinational logic gates through preprocessing of the dynamic gate in the module. Then, the complexity of the model was reduced by incorporating four common combinational logic gates and using the binary decision graph to solve variable ordering in the calculation of failure probability of static subtree. Moreover, the calculating process of complex mixed logic gate fault tree can be simplified. An example of the ammonium nitrate/fuel explosive production system for BCZH-15 explosive vehicle was used to verify the feasibility of the presented method.

scholarly journals A RET-supported logic gate combinatorial library to enable modeling and implementation of intelligent logic functions

2016 ◽  
Vol 7 (3) ◽  
pp. 1853-1861 ◽  
Author(s):  
Ru-Ru Gao ◽  
Shuo Shi ◽  
Ying Zhu ◽  
Hai-Liang Huang ◽  
Tian-Ming Yao
Keyword(s):  
Combinatorial Library ◽  
Logic Gate ◽  
Logic Gates ◽  
Basic Logic ◽  
Parity Checker ◽  
Nor Gate ◽  
Logic Functions

A logic gate combinatorial library, including basic logic gates, a single three-input NOR gate, and combinatorial gates to realize intelligent logic functions (keypad-lock, parity checker) is constructed.

scholarly journals Understanding the Algebraic and Logical Structure of Speech Perception

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Kalina A. Misiolek ◽  
Robert M. Worth ◽  
Leonid L. Rubchinsky
Keyword(s):  
Language Processing ◽  
Linear Logic ◽  
Logic Gate ◽  
Dynamic Logic ◽  
Logic Gates ◽  
Logical Structure ◽  
Speech Comprehension ◽  
Linguistic Processing ◽  
Starting Point ◽  
Study Results

Background: Although subject to much variation, the anatomy of language comprehension has become increasingly clear with the advent of fMRI; however, the steps of speech comprehension remain elusive. There are two main theories of language processing – hierarchical and sequential (or probabilistic). According to the hierarchical theory, sentences are broken down (e.g. sentence to words to syllables to phonemes) and then reconstructed while syntactic and semantic meanings are attached. Sequential theory suggests the use of “word-level statistics” and n-gram-type models to predict sequences of word meanings.1 Although evidence suggests both models play some role, as a starting point, many comprehension models focus on hierarchical theory, and many of those in turn rely on neural networks. However, in various ways, these models fall short of explaining how the brain can biologically carry out all the steps.  Methods: We attempt to create a hierarchical model of speech comprehension using linear logic (or a related logic) or Category Theory, with the hope that such an approach may be able to explain the process more naturally. We focus on the second half of comprehension (i.e. the reconstruction) to make use of existing neuronal logic gate models.2 The goal is to construct a linear logic model or to create categories and associated functors that could explain hierarchical linguistic processing and many neurolinguistic study results.   Potential Impact: Although this model would only account for hierarchical linguistic processing, it would be a huge step forward in understanding how our brain processes speech – and possibly other inputs – at the level of neuron bundles.  References:  Frank, S. L., Christiansen, M. H. (2018). Hierarchical and sequential processing of language. Language, Cognition and Neuroscience, 1-6. doi:10.1080/23273798.2018.1424347  Goldental, A., Guberman, S., Vardi, R., & Kanter, I. (2014). A computational paradigm for dynamic logic-gates in neuronal activity. Frontiers in Computational Neuroscience, 8. doi:10.3389/fncom.2014.00052 

scholarly journals Reconfigurable Logic Gates Using Single-Electron Spin Transistors

2007 ◽  
Vol 46 (10A) ◽  
pp. 6579-6585 ◽  
Author(s):  
Pham Nam Hai ◽  
Satoshi Sugahara ◽  
Masaaki Tanaka
Keyword(s):  
Electron Spin ◽  
Logic Gates ◽  
Single Electron ◽  
Reconfigurable Logic ◽  
Spin Transistors

Recent advances in molecular logic gate chemosensors based on luminescent metal organic frameworks

2021 ◽  
Author(s):  
Bei Li ◽  
Dongsheng Zhao ◽  
Feng Wang ◽  
Xiaoxian Zhang ◽  
Wenqian Li ◽  
...  
Keyword(s):  
Logic Gate ◽  
Metal Organic Frameworks ◽  
Logic Gates ◽  
Design Strategies ◽  
Molecular Logic Gate ◽  
Future Developments ◽  
Molecular Logic ◽  
Molecular Logic Gates ◽  
Recent Advances ◽  
Metal Organic

This review covers the latest advancements of molecular logic gates based on LMOF. The classification, design strategies, related sensing mechanisms, future developments, and challenges of LMOFs-based logic gates are discussed.

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