Tracking the circulation routes of fresh coins in Bitcoin: A way of identifying coin miners with transaction network structural properties. (arXiv:1911.06400v1 [q-fin.GN])

Bitcoin draws the highest degree of attention among cryptocurrencies, while coin mining is one of the most important fashion of profiting in the Bitcoin ecosystem. This paper constructs fresh coin circulation networks by tracking the fresh coin transfer routes with transaction referencing in Bitcoin blockchain. This paper proposes a heuristic algorithm to identifying coin miners…

Optimal intervention strategies of staged progression HIV infections through an age-structured model with probabilities of ART drop out. (arXiv:1911.06703v1 [math.AP])

In this paper, we construct a model to describe the transmission of HIV in a homogeneous host population. By considering the specific mechanism of HIV, we derive a model structured in three successive stages: (i) primary infection, (ii) long phase of latency without symptoms and (iii) AIDS. Each HIV stage is stratified by the duration…

Asymptotics of Quasi-Stationary Distributions of Small Noise Stochastic Dynamical Systems in Unbounded Domains. (arXiv:1911.06707v1 [math.PR])

We consider a collection of Markov chains that model the evolution of multitype biological populations. The state space of the chains is the positive orthant, and the boundary of the orthant is absorbing representing the extinction states of different population types. We are interested in the long-term behavior of the Markov chain away from extinction,…

A crossover code for high-dimensional composition. (arXiv:1911.06775v1 [q-bio.NC])

We present a novel way to encode compositional information in high-dimensional (HD) vectors. Inspired by chromosomal crossover, random HD vectors are recursively interwoven, with a fraction of one vector’s components masked out and replaced by those from another using a context-dependent mask. Unlike many HD computing schemes, “crossover” codes highly overlap with their base elements’…

Mechanism of reconstitution/activation of the soluble PQQ-dependent glucose dehydrogenase from Acinetobacter calcoaceticus: a comprehensive study. (arXiv:1911.06795v1 [q-bio.BM])

The ability to switch on the activity of an enzyme through its spontaneous reconstitution has proven to be a valuable tool in fundamental studies of enzyme structure/reactivity relationships or in the design of artificial signal transduction systems in bioelectronics, synthetic biology, or bioanalytical applications. In particular, those based on the spontaneous reconstitution/activation of the apo-PQQ-dependent…

Spatial eco-evolutionary feedbacks mediate coexistence in prey-predator systems. (arXiv:1902.03016v2 [q-bio.PE] UPDATED)

Eco-evolutionary frameworks can explain certain features of communities in which ecological and evolutionary processes occur over comparable timescales. Here, we investigate whether an evolutionary dynamics may interact with the spatial structure of a prey-predator community in which both species show limited mobility and predator perceptual ranges are subject to natural selection. In these conditions, our…

Improvement of the Izhikevich model based on the rat basolateral amygdala and hippocampus neurons, and recognition of their possible firing patterns. (arXiv:1910.11380v2 [cs.NE] UPDATED)

Introduction: Identifying the potential firing patterns following by different brain regions under normal and abnormal conditions increases our understanding of what is happening in the level of neural interactions in the brain. On the other hand, it is important to be capable of modeling the potential neural activities, in order to build precise artificial neural…

Optimal Sequential Tests for Detection of Changes under Finite measure space for Finite Sequences of Networks. (arXiv:1911.06545v1 [math.ST])

This paper considers the change-point problem for finite sequences of networks. To avoid the difficulty of computing the normalization coefficient, such as in Exponential random graphical models (ERGMs) and Markov networks, we construct a finite measure space with measure ratio statistics. A new performance measure of detection delay is proposed to detect the changes in…

Akaike’s Bayesian information criterion (ABIC) or not ABIC for geophysical inversion. (arXiv:1911.06564v1 [stat.ME])

Akaike’s Bayesian information criterion (ABIC) has been widely used in geophysical inversion and beyond. However, little has been done to investigate its statistical aspects. We present an alternative derivation of the marginal distribution of measurements, whose maximization directly leads to the invention of ABIC by Akaike. We show that ABIC is to statistically estimate the…