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Evolution of community structure in the world trade web

I. Tzekina, K. Danthi, D. N. Rockmore
2008 European Physical Journal B : Condensed Matter Physics  
In particular, we focus on the evolution of trade "islands" in the a world trade network in which countries are linked with directed edges weighted according to fraction of total dollars sent from one  ...  We use Pajek to identify network structure and behavior across thresholds and over time.  ...  Our interest is rather in the evolution of the community structure of the WTW as well as in the set of network hubs.  ... 
doi:10.1140/epjb/e2008-00181-2 fatcat:4wxfyyrdsnd2blzitd4vopaicu

Food Web Structure and the Evolution of Ecological Communities [article]

Christopher Quince, Paul G. Higgs, Alan J. McKane
2001 arXiv   pre-print
The model has a realistic set of predator-prey equations that describe the population dynamics of the species for any structure of the food web.  ...  The set of species present undergoes long-term evolution due to speciation and extinction events.  ...  Acknowledgment CQ wishes to thank EPSRC for the award of a postgraduate grant.  ... 
arXiv:nlin/0105057v1 fatcat:oqvt5amowfh7bllpuroovyqfeu

Biosimplicity via stoichiometry: the evolution of food-web structure and processes [chapter]

James J. Elser, Dag O. Hessen
2005 Aquatic Food Webs  
Along those lines, several of the chapters extend their scope beyond traditional food-web "snapshot" analyses to take into account space and time when assessing changes in food-web structure and species  ...  This section of the book presents and discusses responses of food webs to trophic interactions, transfer efficiency, length of food chains, changes in community composition, the relative importance of  ...  Acknowledgments The authors are grateful for the support of the Center for Advanced Study of the Norwegian Academy of Letters and Sciences that made this work possible.  ... 
doi:10.1093/acprof:oso/9780198564836.003.0002 fatcat:sgh73icxeratxoz4yoklecefre


2014 The Evolution of Language  
All experimental findings confirm that the linguistic structure of Web search queries is indeed evolving.  ...  Web search queries have been observed to exhibit properties of a rudimentary language system, distinct from the mother language from which words of the queries are drawn.  ...  We believe that such a line of research can significantly enrich our knowledge of NL evolution, utilizing large volumes of well-preserved query logs over more than a decade of search engine existence.  ... 
doi:10.1142/9789814603638_0037 fatcat:2jqqpl4wwbg3pethhmzvx7eexq

Using Semantic clustering to enhance the navigation structure of Web sites

Giuseppe Scanniello, Damiano Distante, Michele Risi
2008 2008 10th International Symposium on Web Site Evolution  
This paper presents an automatic approach based on semantic clustering to enhance the navigation structure of Web sites.  ...  The approach extends the navigation structure of a Web site by introducing a set of links that enable the navigation from each page of the site to other pages showing similar or related content.  ...  and evolution [ Ricca and Tonella [31] propose ReWeb, a tool for analyzing the structure and the evolution of static Web sites.  ... 
doi:10.1109/wse.2008.4655396 dblp:conf/wse/ScannielloDR08 fatcat:7qixqqc6a5b7bfb5paoymx4qom

The impact of non-linear functional responses on the long-term evolution of food web structure [article]

Barbara Drossel, Alan McKane, Christopher Quince
2004 arXiv   pre-print
Interestingly, in all cases studied, a large proportion of weak links result naturally from the evolution of the food webs.  ...  We investigate the long-term web structure emerging in evolutionary food web models when different types of functional responses are used.  ...  CQ thanks the EPSRC (UK) for financial support during the initial stages of this work.  ... 
arXiv:q-bio/0401025v1 fatcat:dsydvhg3vrelvm54seun3ojyqe

The Influence of Predator-Prey Population Dynamics on the Long-term Evolution of Food Web Structure [article]

Barbara Drossel, Paul G. Higgs, Alan J. McKane
2000 arXiv   pre-print
We develop a set of equations to describe the population dynamics of many interacting species in food webs.  ...  The ESS foraging behaviour does not correspond to the predictions of optimal foraging theory. We use the population dynamics equations in simulations of the Webworld model of evolving ecosystems.  ...  Acknowledgements This work was supported in part by EPSRC grant K/79307 (BD and AJM) and by the Minerva Foundation (BD).  ... 
arXiv:nlin/0002032v1 fatcat:pgajy2ulsjcgpdexxw5khysifa

Webs of theridiid spiders: construction, structure and evolution

2003 Biological Journal of the Linnean Society  
Trolling for water striders: active searching for prey and the evolution of reduced webs in the  ...  The world of spiders. London: Collins. Carico JE. 1986. Web removal patterns in orb-weaving spiders. In: Shear WA, ed. Spiders -webs, behavior, and evolution.  ...  We are indebted to Ingi Agnarsson, Barbara Knoflach and Konrad Thaler for helpful comments on a draft of the manuscript and for providing literature. We thank  ... 
doi:10.1046/j.1095-8312.2003.00110.x fatcat:2lve35u6nng4tmdfxqw5vpu7dy

The evolution of the institutional structure of the agricultural education in Russia

Olga Fedotova, Vladimir Latun, Yuliya Merinova, Anna Ertel, D. Rudoy, S. Ignateva
2020 E3S Web of Conferences  
An analysis of the development of the education system in the 19th century found that the institutional structure changed significantly towards the emergence of institutions and academies.  ...  The article is devoted to the analysis of the history of the formation of agricultural education in Russia.  ...  The author gave a systematic analysis of the evolution of the institutional structure of the Russian agroindustrial complex as a complex historical process of changing institutions and mechanisms.  ... 
doi:10.1051/e3sconf/202017515026 fatcat:bgg66r2jyfeafmwg4jmh2xfzua

The evolution of the welded joints structure at low cycle fatigue

Ekaterina Poyarkova, Iskander Kuzeev, S. Bratan, S. Gorbatyuk, S. Leonov, S. Roshchupkin
2017 MATEC Web of Conferences  
The effect of cyclic damage on the structure evolution and the change in the micro stresses of the crystal cell in characteristic zones of dissimilar welded joints of steels strength classes Х60 and Х70  ...  the initiation of micro cracks, is observed.  ...  The purpose of this work was to assess the effect of cyclic damage on the trajectory of the evolution of structural heterogeneity of dissimilar welded joints of low-carbon steels for welded structures  ... 
doi:10.1051/matecconf/201712902045 fatcat:atd7nvk32jfkhikhujr27rc4mm

Dynamical Asteroseismology: towards improving the theories of stellar structure and (tidal) evolution

Andrew Tkachenko, M.J.P.F.G. Monteiro, M.S. Cunha, J.M.T.S. Ferreira
2017 EPJ Web of Conferences  
investigations; iii) internal gravity waves and their potential role in the evolution of binary star systems and surface nitrogen enrichment in high-mass stars; iv) the tidal evolution theory, in particular  ...  phase of their evolution; ii) the rotationally induced mixing in high-mass stars, in particular how the most recent theoretical predictions and spectroscopic findings compare to the results of asteroseismic  ...  Acknowledgments The research leading to these results has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement  ... 
doi:10.1051/epjconf/201716005007 fatcat:bezhhmcg25cb7g26cd7xplpioe

Mapping The Evolution of Scientific Community Structures in Time

Theresa Velden, Shiyan Yan, Kan Yu, Carl Lagoze
2015 Proceedings of the 24th International Conference on World Wide Web - WWW '15 Companion  
We explore how the temporal evolution of these maps can be used to provide insights into the historical evolution of a field as well as extract more accurate snapshots of the community structures at a  ...  We here present results from tracking the temporal evolution of community structures within a research specialty.  ...  of the community structures within this field and their evolution over time.  ... 
doi:10.1145/2740908.2742020 dblp:conf/www/VeldenYYL15 fatcat:drc5x7u43zgibjponitjwge764

Customer Perception Driven Product Evolution - Facilitation of Structured Feedback Collection

Oleksiy Khriyenko
2016 Proceedings of the 12th International Conference on Web Information Systems and Technologies  
of feedback into structured data.  ...  Since, mining of free text feedbacks (which is still the most representing form of the real voice of the customer) is challenging, this work presents an approach towards customer-supported transformation  ...  ACKNOWLEDGEMENTS Research is done in Agora Center and MIT departments (University of Jyvaskyla, Finland) under the DIGILE Need4Speed program funded by TEKES and consortium of industrial partners.  ... 
doi:10.5220/0005793901960203 dblp:conf/webist/Khriyenko16 fatcat:eanlukxa7rajbcaazv2ohch4ne

A modified niche model for generating food webs with stage‐structured consumers: The stabilizing effects of life‐history stages on complex food webs

Etsuko Nonaka, Anna Kuparinen
2021 Ecology and Evolution  
The few previously proposed methods do not take full advantage of the existing food web structural models that can produce realistic food web topologies.We extended the niche model developed by Williams  ...  Our method aggregated trophic species based on niche overlap to form a life-history structured population; therefore, it largely preserved the topological structure of food webs generated by the niche  ...  | RE SULTS | Structural properties of the stage-structured food webs The structural properties and characteristics of the 10,000 original stage-structured food webs generated by the modified niche  ... 
doi:10.1002/ece3.7309 pmid:33976797 pmcid:PMC8093700 fatcat:clxcovehi5fx3a4zpb4vg3xulu

Geochemical barriers as structural components of the geochemical systems evolution

Aleksandr Khaustov, Margarita Redina, O. Chudaev, Y. Kharaka, R. Harmon, R. Millot, O. Shouakar-Stash
2019 E3S Web of Conferences  
They can be the defining phenomenon of the emergence and evolution of GCS.  ...  The assessment of the functional role of the geochemical barriers in relation to the properties and evolution of the geochemical systems (GCS)is demonstrated.The foundations of Haken synergy, the foundations  ...  They give impetus to the redistribution of energy and matter in GCS and, consequently, their evolution.  ... 
doi:10.1051/e3sconf/20199801026 fatcat:gqgc5xc6yjaxnafvd2g3b2bsmu
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