One goal of this paper is to give an algorithm for computing a threshold condition for epidemiological systems arising from compartmental deterministic modeling. We calculate a threshold condition T(0) of the parameters of the system such that if T(0)<1 the disease-free equilibrium (DFE) is locally asymptotically stable (LAS), and if T(0)>1, the DFE is unstable. The second objective, by adding ...

The distribution of fitness effects of new mutations (DFE) is important for addressing several questions in genetics, including the nature of quantitative variation and the evolutionary fate of small populations. Properties of the DFE can be inferred by comparing the distributions of the frequencies of segregating nucleotide polymorphisms at selected and neutral sites in a population sample, bu...

Public policy is becoming increasingly stringent with respect to the environmental impacts of modern products. To respond to this tightened scrutiny, product designers must innovate to lower the environmental footprints of their concepts. Design for Environment (DfE) is a field of product design methodology that includes tools, methods and principles to help designers reduce environmental impac...

The estimation of parameters in even moderately large biological systems is a significant challenge. This challenge is greatly exacerbated if the mathematical formats of appropriate process descriptions are unknown. To address this challenge, the method of dynamic flux estimation (DFE) was proposed for the analysis of metabolic time series data. Under ideal conditions, the first phase of DFE yi...

A decision feedback equalizer (DFE) with correct tap weights operating on’a noisy channel is considered. We show how the results concerning a noiseless channel can he extended to yield tight bounds on the stationary error Probability performance for the noisy case. The effect of noise on DFE performance is classified according to the noise distribution and the channel parameters.

Abstract In this paper, the adaptive time reversal (ATR) technique combined with a single channel decision feed back equalizer (DFE) is applied to an at-sea experiment of underwater acoustic multiple-input/multiple-output (MIMO) communication utilizing signal bandwidth 4.5-8.5 kHz over distance 12.5 km. We focus on demonstration effectiveness ATR-DFE schemes for MIMO in real sea environment, an...

Iron is a scarce but essential micronutrient in the oceans that limits primary productivity in many regions of the surface ocean. The mechanisms and rates of Fe supply to the ocean interior are still poorly understood and quantified. Iron isotope ratios of different Fe pools can potentially be used to trace sources and sinks of the global Fe biogeochemical cycle if these boundary fluxes have di...

Dissolved iron (Fe) isotopes in river water have a pivotal role understanding the Fe cycle surficial environment. A total of 13 samples were collected from Mun River to analyze and their controlling factors water, such as dissolved organic carbon (DOC) different supply sources. The results showed that (DFe) concentrations ranged 21.49 μg/L 232.34 dry season 10.48 135.27 wet season, which might ...

This article studies epidemic processes over discrete-time periodic time-varying networks. We focus on the susceptible-infected-susceptible (SIS) model that accounts for a (possibly) mutating virus. say an agent is in disease-free state if it not infected by Our objective to devise control strategy which ensures all agents network exponentially (respectively asymptotically) converge equilibrium...

Introduction: The speed of serial links across copper backplanes has seen a steady rise over recent years. As data rates increase, transmission suffers from severe eye closure caused by intersymbol interference (ISI) owing to high-frequency attenuation of the copper traces drawn on PCBs, crosstalk noise between connector pins, and reflections that occur as data rates move into the microwave fre...