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On the Complexity Landscape of the Domination Chain [chapter]

Cristina Bazgan, Ljiljana Brankovic, Katrin Casel, Henning Fernau
2016 Lecture Notes in Computer Science  
In this paper, we survey and supplement the complexity landscape of the domination chain parameters as a whole, including classifications according to approximability and parameterised complexity.  ...  As this posed the majority of hitherto unsettled problems, we focus on Upper Irredundance and Lower Irredundance that correspond to finding the largest irredundant set and resp. the smallest maximal irredundant  ...  We gratefully acknowledge the support by the Deutsche Forschungsgemeinschaft, grant FE 560/6-1. 9 The current published records are held by the following two papers: J. Chen  ... 
doi:10.1007/978-3-319-29221-2_6 fatcat:heoged57kvcupbz5fmah7qx6fq

Distant agricultural landscapes

Jennifer Clapp
2014 Sustainability Science  
This paper examines the relationship between  ...  I would like to thank the Trudeau Foundation and the Social Sciences and Humanities Research Council of Canada for financial support for this research.  ...  Open Access This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s)  ... 
doi:10.1007/s11625-014-0278-0 fatcat:uo6jd7hlhzhe3djdswnjhnariy

Static All-Atom Energetic Mappings of the SARS-Cov-2 Spike Protein with Potential Latch Identification of the Down State Protomer [article]

Michael H Peters, Oscar Bastidas
2020 biorxiv/medrxiv  
highly complex protein.  ...  We have performed detailed all-atom, dominant energy landscape mappings for noncovalent interactions (charge, partial charge, and van der Waals) of the SARS-Cov-2 Spike protein in its static prefusion  ...  Dominant Energy Landscape for the Interaction of Chain A (Up; red) with Chain B (Down; blue).  ... 
doi:10.1101/2020.05.12.091090 pmid:32511362 pmcid:PMC7263490 fatcat:wznku3m6l5crpffi6kfr34467e

Technology management a complex adaptive systems approach

Ian P. McCarthy
2003 International Journal of Technology Management  
This paper presents a specific model based on the evolutionary processes of variation, selection, retention and struggle, coupled with fitness landscape theory.  ...  The relevance and utility of fitness landscape theory to the strategic management of technology is explored, and a definition and model of technological fitness provided.  ...  An organisation occupies a certain position on the landscape, because it is fit and has evolved a combination of capabilities and routines that place it on the landscape.  ... 
doi:10.1504/ijtm.2003.003134 fatcat:4gb3znptwrdljdd5wbp5t5wrse

Highlighting Complex Long-Term Succession Pathways in Mixed Forests of the Pacific Northwest: A Markov Chain Modelling Approach

Juan A. Blanco, Yueh-Hsin Lo, James P. Kimmins, Adrian Weber
2021 Forests  
In this research, we explored the possibility of developing a Markov Chain model to study multiple pathway succession scenarios in mixed forests of western red cedar, hemlock and Pacific silver fir on  ...  Each ecological state was defined by the dominant tree species and ages.  ...  Conflicts of Interest: The authors declare no conflict of interest. Forests 2021, 12, 1770  ... 
doi:10.3390/f12121770 fatcat:ha62wamzgzbu7gf2xcpppb3wxy

Biogeochemical cycles of Chernobyl-born radionuclides in the contaminated forest ecosystems. Long-term dynamics of the migration processes

Alexey Shcheglov, Ol'ga Tsvetnova, Alexey Klyashtorin
2014 Journal of Geochemical Exploration  
The role of biota as a retardation factor depends on landscape type as well.  ...  In accumulative landscapes (with positive material balance), biota plays leading role in radionuclide retardation, while in eluvial landscapes (with the negative balance) soil absorbing complex serves  ...  The role of biota as a retardation factor depends on landscape type as well.  ... 
doi:10.1016/j.gexplo.2014.05.026 fatcat:upp7yc2i25gszai7midtu672fq

Landscape pattern and economic factors' effect on prediction accuracy of cellular automata-Markov chain model on county scale

Wang Song, Zhao Yunlin, Xu Zhenggang, Yang Guiyan, Huang Tian, Ma Nan
2020 Open Geosciences  
based on the land use of 1996 and 2006.  ...  The research not only provides a reference for correct use of the model but also helps us to understand the driving mechanism of landscape changes.  ...  The size of the PAFRAC value reflects the complexity of the shape of the landscape.  ... 
doi:10.1515/geo-2020-0162 fatcat:uxta4a4cknhxxddbcu4msefxky

Proteins: Paradigms of complexity

H. Frauenfelder
2002 Proceedings of the National Academy of Sciences of the United States of America  
In the proper environment, the chain folds into the working protein, often a globule of linear dimensions of a few nanometers.  ...  Directed by the DNA, of the order of a few hundred building blocks, selected from twenty different amino acids, are covalently linked into a linear polypeptide chain.  ...  One goal of the physics approach to proteins is the exploration of the energy landscape. In no protein is the entire landscape known.  ... 
doi:10.1073/pnas.012579999 pmid:11875198 pmcid:PMC128564 fatcat:7sgoil2v5feb5dfeimuo5rbbsu

Predicting free energy landscapes for complexes of double-stranded chain molecules

Wenbing Zhang, Shi-Jie Chen
2001 Journal of Chemical Physics  
We develop a statistical mechanical theory for the free energy landscapes for complexes of double-stranded chain molecules.  ...  The theory is based on the generalized polymer graph, a graphical representation for the conformations of the complexes.  ...  Dill for useful discussions and encouragement and Francis Schmidt and Om Sehgal for useful discussions, and the University of Missouri Research Board and the American Chemical Society ͑PRF͒ for support  ... 
doi:10.1063/1.1345722 fatcat:kyz26agj3fffzf6lo3ld4vwcxy

Landscape of Altiaghaj National Park

Tahir O. Ibrahimov
2022 Journal of Geology Geography and Geoecology  
Within the first complex, 8 types of landscape were identified; in the second landscape complex – 8; in the third complex-10 and in the last landscape complex-7.  ...  The article examines the landscapes of Altiaghaj National Park. During the study 4 landscape complexes and 33 types of landscapes were identified in the territory of Altiaghaj National Park.  ...  Along with natural processes, here we have also observed anthropogenic impacts on the landscape changes in the territory of National Park.  ... 
doi:10.15421/112225 fatcat:5ycuaswzhjggpebh4hjgdwgmqu

Cooperativity and modularity in protein folding [article]

Masaki Sasai, George Chikenji, Tomoki P. Terada
2016 arXiv   pre-print
The success of the WSME model in explaining the folding of many proteins has verified the hypothesis that the folding is dominated by native interactions, which makes the energy landscape globally biased  ...  The WSME model was extended to explain folding of multi-domain proteins having a complex topology, which opened the way to comprehensively understanding the folding process of multi-domain proteins.  ...  Conflicts of Interest The authors declare no competing financial interest. Author Contribution M.S., G.C., and T.P.T. co-wrote the manuscript.  ... 
arXiv:1608.08341v1 fatcat:klkpyospvvdcvbdxqm7273bxxq

Effcient Solution of Evolution Models for Virus Populations

Gerhard Niederbrucker, Wilfried N. Gansterer
2011 Procedia Computer Science  
The computation of the quasispecies in Eigen's quasispecies model requires the solution of a very large scale eigenvalue problem.  ...  Since the problem dimension is of an exponential growing nature the well known methods for dealing with such a problem run out of resources already far away from practically relevant cases.  ...  This work was partly supported by the Austrian Science Fund (FWF) under contract S10608 (NFN SISE). We would like to thank Peter Schuster for many fruitful discussions.  ... 
doi:10.1016/j.procs.2011.04.014 fatcat:4odg6pvk6ncandud7x6o2pntdm

The Dominant Folding Route Minimizes Backbone Distortion in SH3

Heiko Lammert, Jeffrey K. Noel, José N. Onuchic, Shi-Jie Chen
2012 PLoS Computational Biology  
A decomposition of the two-dimensional free energy landscape for the folding reaction into relevant energy and entropy contributions reveals that the entropy of the chain is not responsible for the folding  ...  We study the quantitative balance of energetic and geometrical influences on the folding of SH3 in a structure-based model with minimal energetic frustration.  ...  of the chain.  ... 
doi:10.1371/journal.pcbi.1002776 pmid:23166485 pmcid:PMC3499259 fatcat:ejnvmtxkwvhdhozcuq4xd3mham

Self-Sufficiency Assessment: Defining the Foodshed Spatial Signature of Supply Chains for Beef in Avignon, France

Michel Mouléry, Esther Sanz Sanz, Marta Debolini, Claude Napoléone, Didier Josselin, Luc Mabire, José Luis Vicente-Vicente
2022 Agriculture  
), considering the foodshed as a complex of complementary areas called an archipelago.  ...  Foodshed approaches allow for the assessment of the theoretical food self-sufficiency capacity of a specific region based on biophysical conditions.  ...  We are grateful to the Urbansimul team for their contribution on dilation/erosion (computer code of the Urbansimul 2016 project), hal-01604422.  ... 
doi:10.3390/agriculture12030419 fatcat:6fyqk3fedvdrholzjrzhsqv3nm

Cooperativity and modularity in protein folding

Masaki Sasai, George Chikenji, Tomoki P. Terada
2016 Biophysics and Physicobiology  
The success of the WSME model in explaining the folding of many proteins has verified the hypothesis that the folding is dominated by native interactions, which makes the energy landscape globally biased  ...  Accordingly, a complex system's behavior could be described as a competition between its tendency to be trapped into one of extensively many disordered states and its tendency to globally drift along the  ...  Acknowledgment This study was supported by JSPS KAKENHI Grant Number JP16H02217, CREST of the Japan Science and Technology Agency, and Riken Pioneering Project "Cellular Evolution".  ... 
doi:10.2142/biophysico.13.0_281 pmid:28409080 pmcid:PMC5221511 fatcat:zj2jxhjr5jbvllxsmvaf5ch2ve
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