Publications related to Viable system theory

Tandem catalysis enables chlorine-containing waste as chlorination reagents

Paul Joseph Dyson, Mingyang Liu, Xinbang Wu

Chlorinated compounds are ubiquitous. However, accumulation of chlorine-containing waste has a negative impact on human health and the environment due to the inapplicability of common disposal methods, such as landfill and incineration. Here we report a su ...

Nature Portfolio2024

Metasurface Near-Field Measurements with Incident Field Reconstruction Using a Single Horn Antenna

Shourya Dutta Gupta, Ville Tuovi Tiukuvaara

Metasurfaces (MSs) are the 2-D equivalent of metaterials, the latter being a class of artificial engineered materials exhibiting peculiar electromagnetic properties [1], [2]. Generally constructed as arrays of deeply sub-wavelength resonant particles on a ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2022

Invariant tori in dissipative hyperchaos

Tobias Schneider, Jeremy Peter Parker

One approach to understand the chaotic dynamics of nonlinear dissipative systems is the study of non-chaotic yet dynamically unstable invariant solutions embedded in the system's chaotic attractor. The significance of zero-dimensional unstable fixed points ...

American Institute of Physics2022

Using Enterprise Models to Explain and Discuss Autopoiesis and Homeostasis in Socio-technical Systems

Gil Regev

The article links two seemingly different fundamental theoretical concepts of autopoiesis and homeostasis and tries to apply them to the realm of socio-technical systems with the use of the Fractal Enterprise Model (FEM). Autopoiesis is the property of a s ...

2020

Towards a Point Cloud Structural Similarity Metric

Touradj Ebrahimi, Evangelos Alexiou

Point cloud is a 3D image representation that has recently emerged as a viable approach for advanced content modality in modern communication systems. In view of its wide adoption, quality evaluation metrics are essential. In this paper, we propose and ass ...

IEEE2020

Quantifying the information impact of future searches for exoplanetary biosignatures

Claudio Grimaldi

One of the major goals for astronomy in the next decades is the remote search for biosignatures (i.e., the spectroscopic evidence of biological activity) in exoplanets. Here we adopt a Bayesian statistical framework to discuss the implications of such futu ...

National Academy of Sciences2020

Inference methods for the study of interacting biological oscillators in single-cells

Colas Noé Droin

Biological oscillators are pervasive in biology, covering all aspects of life from enzyme kinetics reactions to population dynamics. Although their behaviour has been intensively studied in the last decades, the recent advances of high-throughput experimen ...

EPFL2020

Business Models and Complexity

Christopher Tucci, Gianluigi Viscusi, Lorenzo Massa

Purpose: To offer a -necessarily non-exhaustive- analysis of the meaning and significance of the notion of a complex system for research on the Business Model (BM). Design/Methodology/Approach: Conceptual paper Findings: Drawing from early research in comp ...

2018

Intrinsic structural transitions of the pyramidal I 〈c+a〉 dislocation in magnesium

William Curtin, Zhaoxuan Wu

The stability of a mixed < c + a > dislocation on the pyramidal I plane in magnesium is studied using molecular dynamics simulations. The dislocation is metastable and undergoes a thermally-activated transition to either a sessile, basal-dissociated < c + ...

Elsevier2016

Viability evolutionary algorithms and applications to neuroscience and biology

Andrea Maesani

Evolutionary algorithms are heuristic methods that operate on a population of individuals, which represent candidate solutions to optimization problems. Individuals with better quality, or fitness, are reproduced at a higher rate than less fit individuals ...

EPFL2015

Deployment of a tensegrity footbridge

Ian Smith, Nicolas Willy Veuve, Seif Dalil Safaei

Deployable structures are structures that transform their shape from a compact state to an extended in-service position. Structures composed of tension elements that surround compression elements in equilibrium are called tensegrity structures. Tensegritie ...

Asce-Amer Soc Civil Engineers2015

Viability Principles for Constrained Optimization Using a (1+1)-CMA-ES

Dario Floreano, Andrea Maesani

Viability Evolution is an abstraction of artificial evolution which operates by eliminating candidate solutions that do not satisfy viability criteria. Viability criteria are defined as boundaries on the values of objectives and constraints of the problem ...

Springer International Publishing2014

Artificial Evolution by Viability Rather Than Competition

Dario Floreano, Andrea Maesani, Pradeep Ruben Fernando

Evolutionary algorithms are widespread heuristic methods inspired by natural evolution to solve difficult problems for which analytical approaches are not suitable. In many domains experimenters are not only interested in discovering optimal solutions, but ...

Public Library of Science2014

Mechanism-Based Approach for the Deployment of a Tensegrity-Ring Module

Ian Smith, Landolf-Giosef-Anastasios Rhode-Barbarigos, Nizar Bel Hadj Ali, Costanza Schulin, René Motro

Tensegrity structures are spatial systems composed of tension and compression components in a self-equilibrated prestress stable state. Although the concept is over 60 years old, few tensegrity-based structures have been used for engineering purposes. Tens ...

2012

From Composites to Service Systems: The Role of Emergence in Service Design

Alain Wegmann, Anshuman Bahadur Saxena

Service Design is an engineering endeavor to enrich some aspect of the real world through a man-made artifact. Systems approach to modeling reality is particularly relevant to Service Design as it seeks to explain reality as a composition of functional obs ...

2012

A Modeling Framework for Analyzing the Viability of Service Systems

Gil Regev, Alain Wegmann, Arash Golnam

Recent research has explored the principles of service system viability based on systems inquiry invoking perspectives from Systems Theory and Cybernetics in particular Stafford Beer’s viable systems model (VSM). However based on Banathy & Jenlink (2004), ...

2011

On Viable Service Systems: Developing a Modeling Framework for Analysis of Viability in Service Systems

Gil Regev, Alain Wegmann, Arash Golnam

This paper explores the contribution of systems modeling to the design and analysis of viability in service systems. We apply a modeling framework called SEAM (Systemic Enterprise Architecture Method) to gain an understanding of how a service system mainta ...

Springer-Verlag New York, Ms Ingrid Cunningham, 175 Fifth Ave, New York, Ny 10010 Usa2011

Cell viability assessment by flow cytometry using yeast as cell model

Philippe Renaud, Nina Buffi, Niccolo Piacentini, Raphaël Tornay

This paper reports the new combination of cell sorting and counting capabilities on a single device. Most state-of-the-art devices combining these technologies use optical techniques requiring complicated experimental setups and labeled samples. The use of ...

2011

Deployment of a Pentagonal Hollow-Rope Tensegrity Module

Ian Smith, Landolf-Giosef-Anastasios Rhode-Barbarigos, Nizar Bel Hadj Ali, René Motro

Tensegrity structures are spatial reticulated structures composed of cables and struts. Tensegrity systems are good candidates for adaptive and deployable structures and thus have applications in various engineering fields. A “hollow-rope” tensegrity syste ...

2011

PHOTOCATALYTIC DISINFECTION TREATMENTS: VIABILITY, CULTIVABILITY AND METABOLIC CHANGES OF E. coli USING DIFERENT MESUREMENTS METHODS

César Pulgarin, Julien Wist

In this work, the oxidative stress was produced by the illumination of either fixed TiO2 or suspended TiO2. and the relation between cultivability and viability under oxidative conditions was studied using a Direct Viable Count (DVC) and Fluorescence In Si ...

2011