Pablo Moisset de Espanés

Pablo Moisset de Espanés
University of Chile · CeBiB

PhD, University of Southern Cal. 2005

About

39
Publications
4,302
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814
Citations
Additional affiliations
January 2010 - November 2016
University of Chile
Position
  • Engineer, Research associate
January 2008 - present
Universidad de Santiago de Chile
November 2005 - April 2007
University of Southern California
Position
  • PostDoc Position

Publications

Publications (39)
Article
The COVID-19 disease has forced countries to make a considerable collaborative effort between scientists and governments to provide indicators to suitable follow-up the pandemic’s consequences. Mathematical modeling plays a crucial role in quantifying indicators describing diverse aspects of the pandemic. Consequently, this work aims to develop a c...
Article
Full-text available
Ecological theory recognizes the importance of the variety of species for maintaining the functioning of ecosystems and their derived services. We assert that when studying the effects of shifts in biodiversity levels using mathematical models, their dynamics must be sensitive to the variety of species traits but not to raw species numbers, a prope...
Preprint
Ecological theory recognizes the importance of the variety of species for maintaining the functioning of ecosystems and their derived services. We assert that when studying the effects of shifts in biodiversity levels using mathematical models, their dynamics must be sensitive to the variety of species traits but not to raw species numbers, a prope...
Preprint
Full-text available
The COVID-19 disease has forced countries to make a considerable collaborative effort between scientists and governments to provide indicators to suitable follow-up the pandemic's consequences. Mathematical modeling plays a crucial role in quantifying indicators describing diverse aspects of the pandemic. Consequently, this work aims to develop a c...
Preprint
Full-text available
Plant–pollinator interactions are key for ecosystem maintenance and world crop production, and their occurrence depends on the synchronization of life-cycle events among interacting species. Phenological shifts observed for plant and pollinator species increase the risk of phenological mismatches, threatening community stability. However, the magni...
Article
Full-text available
Population declines of pollinators constitute a major concern for the fate of biodiversity and associated ecosystem services in a context of global change. Massive declines of pollinator populations driven by habitat loss, pollution, and climate change have been reported, whose consequences at community and ecosystem levels remain elusive. We condu...
Article
Full-text available
Abstract Plant–pollinator systems are essential for ecosystem functioning, which calls for an understanding of the determinants of their robustness to environmental threats. Previous studies considering such robustness have focused mostly on species’ connectivity properties, particularly their degree. We hypothesized that species’ phenological attr...
Article
Full-text available
Species invasions constitute a major and poorly understood threat to plant-pollinator systems. General theory predicting which factors drive species invasion success and subsequent effects on native ecosystems is particularly lacking. We address this problem using a consumer-resource model of adaptive behavior and population dynamics to evaluate th...
Article
Full-text available
In a recent paper published in Ecosphere, their authors suggest that extending the logistic growth model in its usual r - K parametrization to a multi-patch environment results in undesirable properties, that were referred to as the "perfect mixing paradox". This led the authors to recommend using the Verhulst r - {\alpha} parametrization of the lo...
Article
Fixed points are fundamental states in any dynamical system. In the case of gene regulatory networks (GRNs) they correspond to stable genes profiles associated to the various cell types. We use Kauffman's approach to model GRNs with random Boolean networks (RBNs). We start this paper by proving that, if we fix the values of the source nodes (nodes...
Article
Full-text available
Much research debates whether properties of ecological networks such as nestedness and con-nectance stabilise biological communities while ignoring key behavioural aspects of organisms within these networks. Here, we computationally assess how adaptive foraging (AF) behaviour interacts with network architecture to determine the stability of plant–p...
Article
In the broadcast version of the congested clique model, n nodes communicate in synchronous rounds by writing O(log n)-bit messages on a whiteboard, which is visible to all of them. The joint input to the nodes is an undirected n-node graph G, with node i receiving the list of its neighbors in G. Our goal is to design a protocol at the end of which...
Chapter
We study the strict majority bootstrap percolation process on graphs. Vertices may be active or passive. Initially, active vertices are chosen independently with probability . Each passive vertex becomes active if at least of its neighbors are active (and thereafter never changes its state). If at the end of the process all vertices become active t...
Conference Paper
Full-text available
Background/Question/Methods The invasion of alien species into native ecosystems constitutes one of the major anthropogenic threats to the function and integrity of pollination systems. However, ecologists lack a clear understanding of factors driving invasion success and subsequent effects on the invaded ecosystems. Here, we use an integrative mo...
Conference Paper
Full-text available
We study the strict majority bootstrap percolation process on graphs. Vertices may be active or passive. Initially, active vertices are chosen independently with probability~$p$. Each passive vertex $v$ becomes active if at least $\lceil \frac{deg(v)+1}{2} \rceil$ of its neighbors are active (and thereafter never changes its state). If at the end o...
Chapter
In 1864, Waage and Guldberg formulated the “law of mass action.” Since that time, chemists, chemical engineers, physicists and mathematicians have amassed a great deal of knowledge on the topic. In our view, sufficient understanding has been acquired to warrant a formal mathematical consolidation. A major goal of this consolidation is to solidify t...
Article
One of the most studied inverse problems in cellular automata (CAs) is the density classification problem. It consists in finding a CA such that, given any initial configuration of 0s and 1s, it converges to the all-1 fixed point configuration if the fraction of 1s is greater than the critical density 1/2, and it converges to the all-0 fixed point...
Article
In this paper we study the strict majority bootstrap percolation process on graphs. Vertices may be active or passive. Initially, active vertices are chosen independently with probability p. Each passive vertex becomes active if at least half of its neighbors are active (and thereafter never changes its state). If at the end of the process all vert...
Article
A continuous model of a metabolic network including gene regulation to simulate metabolic fluxes during batch cultivation of yeast Saccharomyces cerevisiae was developed. The metabolic network includes reactions of glycolysis, gluconeogenesis, glycerol and ethanol synthesis and consumption, the tricarboxylic acid cycle, and protein synthesis. Carbo...
Article
Full-text available
1. Earlier studies used static models to evaluate the responses of mutualistic networks to external perturbations. Two classes of dynamics can be distinguished in ecological networks; population dynamics, represented mainly by changes in species abundances, and topological dynamics, represented by changes in the architecture of the web. 2. In this...
Article
Full-text available
Pollination systems are recognized as critical for the maintenance of biodiversity in terrestrial ecosystems. Therefore, the understanding of mechanisms that promote the integrity of those mutualistic assemblages is an important issue for the conservation of biodiversity and ecosystem function. In this study we present a new population dynamics mod...
Article
DNA self-assembly is a promising paradigm for nanotechnology. In this chapter we study the problem of finding tile systems of minimum size that assemble a given shape in the Tile Assembly Model, defined by Rothemund and Winfree [Paul W.K. Rothemund, Erik Winfree, The program-size complexity of self-assembled squares (extended abstract), in: Proceed...
Article
DNA self-assembly is a promising paradigm for nanotechnology. In this paper we study the problem of finding tile systems of minimum size that assemble a given shape in the Tile Assembly Model, defined by Rothemund and Winfree (Proceedings of the thirty-second annual ACM symposium on theory of computing, 2000). We present a tile system that assemble...
Conference Paper
DNA self-assembly is a promising paradigm for nanotechnology. In this paper we study the problem of finding tile systems of minimum size that assemble a given shape in the Tile Assembly Model, defined by Rothemund and Winfree[14]. We present a tile system that assembles an N×⌈log2 N⌉ rectangle in asymptotically optimal Θ(N) time. This tile system h...
Article
Thesis (Ph. D.)--University of Southern California, 2005. Includes bibliographical references (leaves 84-85).
Article
Full-text available
In this paper, we extend Rothemund and Winfree's examination of the tile complexity of tile self-assembly [6]. They provided a lower bound of Ω(log N/log log N) on the tile complexity of assembling an N × N square for almost all N. Adleman et al. [1] gave a construction which achieves this bound. We consider whether the tile complexity for self-ass...
Article
We present a tile system for assembling a counter of width K and height N = on top of a seed-row in optimum time #(N). Our counter works at temperature 2. Earlier known constructions either took sub-optimal time or required temperature 3. Using existing techniques, our system for assembling a counter from a seed row can be extended into a system fo...
Conference Paper
Full-text available
DNA self-assembly is emerging as a key paradigm for nano-technology, nano-computation, and several related disciplines. In nature, DNA self-assembly is often equipped with explicit mechanisms for both error prevention and error correction. For artificial self-assembly, these problems are even more important since we are interested in assembling lar...
Article
Recently Rothemund and Winfree [8] have considered the program size complexity of constructing squares by self-assembly. Here, we consider the time complexity of such constructions using a natural generalization of the Tile Assembly Model defined in [8]. In the generalized model, the RothemundWinfree construction of n n squares requires time #(n lo...
Conference Paper
Full-text available
Self-assembly is the ubiquitous process by which simple objects autonomously assemble into intricate complexes. It has been suggested that intricate self-assembly processes will ultimately be used in circuit fabrication, nano-robotics, DNA computation, and amorphous computing. In this paper, we study two combinatorial optimization problems related...

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