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A current constrained approach is proposed to calculate negative differential conductance in molecular nano-junctions. A four-site junction is considered where a steady-state current is forced by inserting only the two central sites within…

介观与纳米尺度物理 · 物理学 2016-11-26 Prakash Parida , Swapan K. Pati , Anna Painelli

In this paper, we report on the controllable negative differential resistance (NDR) in a proposed planar graphene superlattice structure. High value of peak to valley ratio (PVR) is predicted. This is significant because of appearance of…

介观与纳米尺度物理 · 物理学 2017-03-02 S. M. Sattari-Esfahlan , J. Fouladi-Oskuei , S. Shojaei

This paper investigates an open issue related to false discovery rate (FDR) control of step-up-down (SUD) multiple testing procedures. It has been established in earlier literature that for this type of procedure, under some broad…

统计方法学 · 统计学 2011-08-29 Gilles Blanchard , Thorsten Dickhaus , Etienne Roquain , Fanny Villers

We propose a unified framework that allows for the full mechanistic reconstruction of chemical reaction networks (CRNs) from concentration data. The framework utilizes an integral formulation of the differential equations governing the…

数值分析 · 数学 2026-02-13 Abraham Reyes-Velazquez , Stefan Güttel , Igor Larrosa , Jonas Latz

A natural condition on the structure of the underlying chemical reaction network, namely weak reversibility, is shown to guarantee the existence of an equilibrium (steady state) in each positive stoichiometric compatibility class for the…

定量方法 · 定量生物学 2011-11-14 Jian Deng , Christopher Jones , Martin Feinberg , Adrian Nachman

Chemical systems are interpreted through the species they contain and the reactions they may undergo, i.e., their chemical reaction network (CRN). In spite of their central importance to chemistry, the structure of CRNs continues to be…

统计力学 · 物理学 2025-06-17 Alex Blokhuis , Martijn van Kuppeveld , Daan van de Weem , Robert Pollice

The linear noise approximation (LNA) describes the random fluctuations from the mean-field concentrations of a chemical reaction network due to intrinsic noise. It is also used as a test probe to determine the accuracy of reduced…

分子网络 · 定量生物学 2025-11-27 Justin Eilertsen , Wylie Stroberg

We explore the range of probabilistic behaviours that can be engineered with Chemical Reaction Networks (CRNs). We show that at steady state CRNs are able to "program" any distribution with finite support in $\mathbb{N}^m$, with $m \geq 1$.…

分布式、并行与集群计算 · 计算机科学 2018-04-25 Luca Cardelli , Marta Kwiatkowska , Luca Laurenti

Given any finite and closed chemical reaction system, it is possible to efficiently determine whether or not it contains a `self-sustaining and collectively autocatalytic' subset of reactions, and to find such subsets when they exist.…

分子网络 · 定量生物学 2015-01-26 Mike Steel

Interacting-Particle Reaction Dynamics (iPRD) simulates the spatiotemporal evolution of particles that experience interaction forces and can react with one another. The combination of interaction forces and reactions enable a wide range of…

化学物理 · 物理学 2018-07-20 Christoph Fröhner , Frank Noé

The dissipativity concept sits at the intersection of physics, systems theory, and control engineering, as a natural generalisation of passive systems that dissipate energy. It relates the external behavior of systems to their internal…

最优化与控制 · 数学 2024-10-28 Timothy H. Hughes , Edward H. Branford

Autocatalytic Sets are reaction networks theorised as networks at the basis of life. Their main feature is the ability of spontaneously emerging and self-reproducing. The Reflexively and Food-generated theory provides a formal definition of…

分子网络 · 定量生物学 2020-10-19 Alessandro Ravoni

This paper develops the concept of decomposition for chemical reaction networks, based on which a network decomposition technique is proposed to capture the stability of large-scale networks characterized by a high number of species, high…

动力系统 · 数学 2021-02-23 Yafei Lu , Chuanhou Gao , Denis Dochain

The most profound effect of disorder on the elastic response of solids is the nonaffinity of local displacements whereby the atoms (particles, network junctions) do not simply follow the macroscopic strain, as they do in perfect crystals,…

软凝聚态物质 · 物理学 2012-01-12 Alessio Zaccone , Jamie R. Blundell , Eugene M. Terentjev

Deep learning-based drug response prediction (DRP) methods can accelerate the drug discovery process and reduce R\&D costs. Although the mainstream methods achieve high accuracy in predicting response regression values, the regression-aware…

生物大分子 · 定量生物学 2023-12-19 Kun Li , Wenbin Hu

Many components used in signal processing and communication applications, such as power amplifiers and analog-to-digital converters, are nonlinear and have a finite dynamic range. The nonlinearity associated with these devices distorts the…

信息论 · 计算机科学 2014-10-29 Kai Ying , Zhenhua Yu , Robert J. Baxley , G. Tong Zhou

Chemical reaction prediction remains a fundamental challenge in organic chemistry, where existing machine learning models face two critical limitations: sensitivity to input permutations (molecule/atom orderings) and inadequate modeling of…

机器学习 · 计算机科学 2026-02-03 Runhan Shi , Letian Chen , Gufeng Yu , Yang Yang

We introduce a novel Pseudo-Negative Regularization (PNR) framework for effective continual self-supervised learning (CSSL). Our PNR leverages pseudo-negatives obtained through model-based augmentation in a way that newly learned…

机器学习 · 计算机科学 2024-06-10 Sungmin Cha , Kyunghyun Cho , Taesup Moon

This paper develops a new analytical model to estimate real-time variations in grid frequency and voltages resulting from dynamic network reconfiguration (DNR). In the proposed model, switching operations are considered as discrete…

系统与控制 · 电气工程与系统科学 2020-12-15 Jae-Young Park , Young-Jin Kim

The subject of study is a neural network with binary neurons, randomly diluted synapses and variable pattern activity. We look at the system with parallel updating using a probabilistic approach to solve the one step dynamics with one…

无序系统与神经网络 · 物理学 2009-10-31 Stefan Grosskinsky