Academic literature on the topic 'Spatial genetic structures'

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Journal articles on the topic "Spatial genetic structures"

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Dupuis, Julian R., Forest T. Bremer, Thibaut Jombart, Sheina B. Sim, and Scott M. Geib. "mvmapper: Interactive spatial mapping of genetic structures." Molecular Ecology Resources 18, no. 2 (2017): 362–67. http://dx.doi.org/10.1111/1755-0998.12724.

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Grzywiński, Maksym, and Jacek Selejdak. "Weight Minimization of Spatial Trusses with Genetic Algorithm." Quality Production Improvement - QPI 1, no. 1 (2019): 238–43. http://dx.doi.org/10.2478/cqpi-2019-0032.

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Abstract A genetic algorithm is proposed to solve the weight minimization problem of spatial truss structures considering size and shape design variables. A very recently developed metaheuristic method called JAYA algorithm (JA) is implemented in this study for optimization of truss structures. The main feature of JA is that it does not require setting algorithm specific parameters. The algorithm has a very simple formulation where the basic idea is to approach the best solution and escape from the worst solution. Analyses of structures are performed by a finite element code in MATLAB. The eff
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NAMROUD, MARIE-CLAIRE, ANDREW PARK, FRANCINE TREMBLAY, and YVES BERGERON. "Clonal and spatial genetic structures of aspen (Populus tremuloides Michx.)." Molecular Ecology 14, no. 10 (2005): 2969–80. http://dx.doi.org/10.1111/j.1365-294x.2005.02653.x.

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Degen, B. "SGS--Spatial Genetic Software: A Computer Program for Analysis of Spatial Genetic and Phenotypic Structures of Individuals and Populations." Journal of Heredity 92, no. 5 (2001): 447–48. http://dx.doi.org/10.1093/jhered/92.5.447.

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Xiao, Jian Chun, Jing Chen, Qi Li, and Shao Quan Xia. "Shape and Cross-Section Optimization of Spatial Grid Structures Using Genetic Algorithm." Advanced Materials Research 479-481 (February 2012): 1463–67. http://dx.doi.org/10.4028/www.scientific.net/amr.479-481.1463.

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The optimization of the structures is difficult because the variables have different physical property or different quantitative attribute. The shape and cross-section optimization of spatial grid structures is performed by an improved genetic algorithm. The constraint conditions are composed of the structural deformation, the stability of the compressive members, the slender ratios, and etc. The treatment of the constraint conditions and the optimization function gives an unconstrained analytic function by adopting Lagrange multipliers. The method enhances the running efficiency of the geneti
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Brickner, Jason. "Genetic and epigenetic control of the spatial organization of the genome." Molecular Biology of the Cell 28, no. 3 (2017): 364–69. http://dx.doi.org/10.1091/mbc.e16-03-0149.

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Eukaryotic genomes are spatially organized within the nucleus by chromosome folding, interchromosomal contacts, and interaction with nuclear structures. This spatial organization is observed in diverse organisms and both reflects and contributes to gene expression and differentiation. This leads to the notion that the arrangement of the genome within the nucleus has been shaped and conserved through evolutionary processes and likely plays an adaptive function. Both DNA-binding proteins and changes in chromatin structure influence the positioning of genes and larger domains within the nucleus.
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MITSUI, Kazuo, and Nobuyoshi TOSAKA. "AN APPLICATION OF GENETIC ALGORITHMS TO FORM FINDING ANALYSIS OF SPATIAL STRUCTURES." Journal of Structural and Construction Engineering (Transactions of AIJ) 61, no. 484 (1996): 75–83. http://dx.doi.org/10.3130/aijs.61.75_1.

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Monestiez, P., M. Goulard, and G. Charmet. "Geostatistics for spatial genetic structures: study of wild populations of perennial ryegrass." Theoretical and Applied Genetics 88, no. 1 (1994): 33–41. http://dx.doi.org/10.1007/bf00222391.

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Padrón, Mariana, and Katell Guizien. "Modelling the effect of demographic traits and connectivity on the genetic structuration of marine metapopulations of sedentary benthic invertebrates." ICES Journal of Marine Science 73, no. 7 (2015): 1935–45. http://dx.doi.org/10.1093/icesjms/fsv158.

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Abstract Accounting for connectivity is essential in marine spatial planning and the proper design and management of marine protected areas, given that their effectiveness depends on the patterns of dispersal and colonization between protected and non-protected areas. The genetic structure of populations is commonly used to infer connectivity among distant populations. Here, we explore how population genetic structure is affected by pre- and settlement limitations with a spatially explicit coupled metapopulation-gene flow model that simulates the effect of demographic fluctuations on the allel
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Epperson, B. K. "Spatial distributions of genotypes under isolation by distance." Genetics 140, no. 4 (1995): 1431–40. http://dx.doi.org/10.1093/genetics/140.4.1431.

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Abstract The spatial distributions of single-locus diploid genotypes, produced within populations of sexually reproducing individuals under isolation by distance, are measured and characterized in detail by quantifying the join-counts for simulated model populations. The models more realistically reflect spatially explicit distributions of genotypes in populations, because unlike the classical theory, they include the stochasticity inherent in the process of matings between genotypes. This stochasticity causes the formation of large areas or patches containing mostly one homozygous genotype, w
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Dissertations / Theses on the topic "Spatial genetic structures"

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Yu, Xuesong. "Statistical methods for analyzing genomic data with consideration of spatial structures /." Thesis, Connect to this title online; UW restricted, 2007. http://hdl.handle.net/1773/9553.

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King, Rachel, and n/a. "Spatial Structure and Population Genetic Variation in a Eucalypt Species Complex." Griffith University. Australian School of Environmental Studies, 2004. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20050113.091713.

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In this study, the relative influences of selection, gene flow, and other evolutionary forces on the spatial structure of genetic variation within a eucalypt species complex (the spotted gums: genus Corymbia, section Politaria) were assessed. The study investigated the spatial genetic structure among four putative species of spotted gum (broad-scale), as well as within a single population (fine-scale)of one species, using both molecular and quantitative markers. The spotted gum complex occurs naturally across a range of 2500 km in eastern Australia. Spatial genetic variation within and between
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Laurence, Sophie. "GENETIC VARIATION AND POPULATION GENETIC STRUCTURE OF MUSKRAT, ONDATRA ZIBETHICUS, AT DIFFERENT SPATIAL SCALES." Thesis, Laurentian University of Sudbury, 2014. https://zone.biblio.laurentian.ca/dspace/handle/10219/2171.

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Understanding the factors and processes that influence intraspecific genetic variation are essential to better understand evolutionary processes. In this research, I examined patterns of gene flow and their effects on the distribution of genetic variation and spatial genetic structuring at different spatial scales. I used a combination of population genetics, spatial analysis, morphometrics and phylogeography in order to understand the patterns of genetic variation and their resulting phenotypic variations in a semi-aquatic species, the muskrat (Ondatra zibethicus).
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Hailu, Solomon Ghebremeskel. "THE EFFECT OF HABITAT FRAGMENTATION ON THE SPATIAL POPULATION GENETIC STRUCTURE OF SOUTHERN PINE BEETLE (DENDROCTONUS FRONTALIS)." OpenSIUC, 2011. https://opensiuc.lib.siu.edu/theses/624.

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Southern pine beetle (SPB), Dendroctonus frontalis (Zimmerman), is one of the most destructive insect pests of pine trees in southern United States, Mexico and Central America. There is relatively little information on the effect of habitat fragmentation on the connectivity and the spatial population genetics of SPB. This study therefore, adds to previously generated information by assessing how habitat fragmentation affects the spatial population genetic structure of SPB. It also introduces a new approach to the study of bark beetle population dynamics by assessing how landscape variables sha
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Lundy, Ian J. "Theoretical population genetics of spatially structured populations /." Title page, contents and summary only, 1997. http://web4.library.adelaide.edu.au/theses/09PH/09phl962.pdf.

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Flint, Gillian F. "Landscape genetics of Alnus glutinosa across contrasting spatial scales in a natural river system." Thesis, University of Stirling, 2015. http://hdl.handle.net/1893/23243.

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The genetic diversity and genetic structure of populations, and the processes shaping gene flow within and between populations, are influenced by the landscapes they occur within. Within terrestrial landscapes, rivers and their riparian habitat are among the most dynamic, diverse and complex of landscapes and their linear structure appears as an interlinking feature across large landscapes. This thesis took a landscape genetics approach to examine the influence of river landscape features on Alnus glutinosa populations, a widespread keystone tree species of European riparian ecosystems. By acc
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Forien, Raphael. "The spatial structure of genetic diversity under natural selection and in heterogeneous environments." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLX082/document.

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Cette thèse porte sur la structure spatiale de la diversité génétique. Dans un premier temps, nous étudions un processus à valeurs mesure décrivant l'évolution de la composition génétique d'une population soumise à la sélection naturelle. Nous montrons que ce processus satisfait un théorème de la limite centrale, et que ses fluctuations sont données par la solution d'une équation aux dérivées partielles stochastique. Nous utilisons ce résultat pour donner une estimation du fardeau de dérive au sein d'une population structurée en espace.Dans un deuxième temps, nous nous intéressons à la composi
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Zhao, Wanying. "Genetic, Age, and Spatial Structure to Improve Management of Common Privet (Ligustrum vulgare)." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1325115045.

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Segelbacher, Gernot. "Genetic structure of capercaillie populations a non-invasive approach at multiple spatial scales /." [S.l. : s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=964462478.

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Tero, N. (Niina). "Genetic structure at different spatial scales in metapopulations of Silene tatarica." Doctoral thesis, University of Oulu, 2005. http://urn.fi/urn:isbn:9514277694.

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Abstract The genetic structure at different spatial scales and growing habitats was studied on Silene tatarica, using AFLP and microsatellite markers. S. tatarica is a rare perennial plant occurring along riverbanks and shores of two annually flooding rivers in Finland. Regional scale analysis based on AFLP fragment analysis showed that at Oulanka River population structure represented mostly classical metapopulation model. In general, colonization-extinction processes had an important role, dispersal between subpopulations was limited and genetic differentiation was independent of geographic
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Books on the topic "Spatial genetic structures"

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Krzanowski, Roman M., and Jonathan Raper. Spatial Evolutionary Modeling. Oxford University Press, 2001. http://dx.doi.org/10.1093/oso/9780195135688.001.0001.

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Evolutionary models (e.g., genetic algorithms, artificial life), explored in other fields for the past two decades, are now emerging as an important new tool in GIS for a number of reasons. First, they are highly appropriate for modeling geographic phenomena. Secondly, geographical problems are often spatially separate (broken down into local or regional problems) and evolutionary algorithms can exploit this structure. Finally, the ability to store, manipulate, and visualize spatial data has increased to the point that space-time-attribute databases can be easily handled.
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Chen, Xiangyang. Woman, Generic Aesthetics, and the Vernacular. University of Illinois Press, 2017. http://dx.doi.org/10.5406/illinois/9780252036613.003.0013.

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This chapter examines the hybrid origins of Hong Kong's Huangmei opera film. It shows how the Chinese Communist Party's demand for a cinema showcasing the national cultural past paradoxically facilitated the cross-border circulation of an indigenous, vernacular operatic tradition—featuring feisty rural women, female voice-over chanting, and frequent cross-dressing—into the modernizing idioms of Hong Kong's film industry. Under colonial suppression of local nationalist objectives, the resulting hybridized genre carried a vital female imaginary in nostalgic Chinese wrappings. In contrast to Indi
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Cochrane, Ethan E., and Terry L. Hunt. The Archaeology of Prehistoric Oceania. Edited by Ethan E. Cochrane and Terry L. Hunt. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199925070.013.001.

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The archaeological record of Oceania stretches over one-third of the earth’s surface with the first humans entering Oceania 50,000 years ago and with the last major archipelago settled approximately a.d. 1300. Oceania is often divided into the cultural-geographic regions of Polynesia, Melanesia, and Micronesia, but these divisions mask much variation, and they do not always accurately characterize the historical relationships among Oceania’s populations. Since the 1950s, archaeological researchers have investigated Oceania’s human and environmental past and have focused on colonization chronol
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Bertel, E., and A. Menzel. Nanostructured surfaces: Dimensionally constrained electrons and correlation. Edited by A. V. Narlikar and Y. Y. Fu. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199533046.013.11.

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This article examines dimensionally constrained electrons and electronic correlation in nanostructured surfaces. Correlation effects play an important role in spatial confinement of electrons by nanostructures. The effect of correlation will become increasingly dominant as the dimensionality of the electron wavefunction is reduced. This article focuses on quasi-one-dimensional (quasi-1D) confinement, i.e. more or less strongly coupled one-dimensional nanostructures, with occasional reference to 2D and 0D systems. It first explains how correlated systems exhibit a variety of electronically driv
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El-Sharif, Ahmad. The Muslim Prophetic Tradition. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190636647.003.0011.

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This chapter surveys the major conceptual metaphorical source domains in the Prophet Muhammad’s Tradition and their mappings with reference to Conceptual Metaphor Theory. The Prophetic discourse makes great use of metaphors whose source domains vary considerably. These metaphors are systematically classified in particular spatial domains. In addition, the Prophetic metaphors show considerable discrepancy in terms of their degree of generality and specificity: many metaphoric schemas are generic in their mapping, while a large number are very specific in their mapping. Furthermore, the majority
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Book chapters on the topic "Spatial genetic structures"

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Monestiez, P., M. Goulard, G. Charmet, and F. Balfourier. "Analysing Spatial Genetic Structures By Multivariate Geostatistics : Study of Wild Populations of Perennial Ryegrass (Lolium Perenne)." In Geostatistics Wollongong’ 96. Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5726-1_48.

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Etheridge, Alison. "Spatial Structure." In Some Mathematical Models from Population Genetics. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-16632-7_6.

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Epperson, B. K. "Spatial structure of genetic variation within populations of forest trees." In Forestry Sciences. Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2815-5_14.

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Stoddart, James A. "Historecognition and Fine-Scale Spatial Genetic Structure in Sessile Benthic Invertebrates." In Invertebrate Historecognition. Springer US, 1988. http://dx.doi.org/10.1007/978-1-4613-1053-2_9.

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Kerdelhué, Carole, Andrea Battisti, Christian Burban, et al. "Genetic Diversity and Structure at Different Spatial Scales in the Processionary Moths." In Processionary Moths and Climate Change : An Update. Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-017-9340-7_4.

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Degen, B., H. Caron, E. Bandou, et al. "Small scale spatial genetic structure of six tropical tree species in French Guiana." In Genetic Response of Forest Systems to Changing Environmental Conditions. Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-015-9839-2_7.

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Benzie, J. A. H. "The detection of spatial variation in widespread marine species: methods and bias in the analysis of population structure in the crown of thorns starfish (Echinodermata: Asteroidea)." In Marine Genetics. Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-017-2184-4_1.

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Miao, Zuohua, Yong Chen, and Xiangyang Zeng. "CA Model of Optimization Allocation for Land Use Spatial Structure Based on Genetic Algorithm." In Artificial Intelligence and Computational Intelligence. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-23881-9_85.

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Rocha, Miguel, Filipe Pereira, Sónia Afonso, and José Neves. "A Genetic and Evolutionary Programming Environment with Spatially Structured Populations and Built-In Parallelism." In Engineering of Intelligent Systems. Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/3-540-45517-5_43.

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Schrodt, Franziska, Betsabe de la Barreda Bautista, Christopher Williams, Doreen S. Boyd, Gabriela Schaepman-Strub, and Maria J. Santos. "Integrating Biodiversity, Remote Sensing, and Auxiliary Information for the Study of Ecosystem Functioning and Conservation at Large Spatial Scales." In Remote Sensing of Plant Biodiversity. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-33157-3_17.

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AbstractAssessing patterns and processes of plant functional, taxonomic, genetic, and structural biodiversity at large scales is essential across many disciplines, including ecosystem management, agriculture, ecosystem risk and service assessment, conservation science, and forestry. In situ data housed in databases necessary to perform such assessments over large parts of the world are growing steadily. Integrating these in situ data with remote sensing (RS) products helps not only to improve data completeness and quality but also to account for limitations and uncertainties associated with each data product. Here, we outline how auxiliary environmental and socioeconomic data might be integrated with biodiversity and RS data to expand our knowledge about ecosystem functioning and inform the conservation of biodiversity. We discuss concepts, data, and methods necessary to assess plant species and ecosystem properties across scales of space and time and provide a critical discussion of outstanding issues.
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Conference papers on the topic "Spatial genetic structures"

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Calogero, Joseph, Mary Frecker, Zohaib Hasnain, and James E. Hubbard. "Optimization of Spatially Distributed Contact-Aided Compliant Mechanisms in a Dynamic Structure." In ASME 2017 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/smasis2017-3842.

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The optimal stiffnesses and spatial locations of contact-aided compliant mechanisms in a dynamic flapping wing structure are found using a numerical dynamics model and multi-objective genetic algorithm. Using mathematical descriptions of how wing shape change impact pitch agility in a flapping wing mechanical bird, an optimization problem was formulated to find compliant joint stiffness and location parameters which induce desired shape change. Specifically, the goal of the shape change was to induce forward sweep at the upstroke to downstroke transition while otherwise remaining stiff in an e
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Bielefeldt, Brent R., Darren J. Hartl, and Ergun Akleman. "L-System-Generated Topology Optimization of Compliant Mechanisms Using Graph-Based Interpretation." In ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/detc2018-85225.

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Traditional topology optimization techniques, such as density-based and level set methods, have proven successful in identifying potential design configurations but suffer from rapidly increasing design space dimensionality and convergence to local minima. A heuristic alternative to these approaches couples a genetic algorithm with a Lindenmayer System (L-System), which encodes design variables and governs the development of the structure when coupled with some sort of interpreter. This work discusses the development of a graph-based interpretation scheme referred to as Spatial Interpretation
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Calogero, Joseph, Mary Frecker, Zohaib Hasnain, and James E. Hubbard. "Experimental Validation of Compliant Joints in a Dynamic Spar Numerical Model." In ASME 2016 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/smasis2016-9074.

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A dynamic spar numerical model for passive shape change is validated for a single degree of freedom contact-aided compliant mechanism (CCM) in a flapping spar. CCMs are modeled as compliant joints: spherical joints with distributed mass and three axis nonlinear torsional spring-dampers. Several assumptions were made in the original formulation of the model, such as assuming the spars were rigid and a simple damping model for the compliant joints. An experiment was performed to validate the assumptions and tune the model. Four configurations of the leading edge spar were tested: a solid spar, a
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Dick, Grant, Caitlin A. Owen, and Peter A. Whigham. "Evolving bagging ensembles using a spatially-structured niching method." In GECCO '18: Genetic and Evolutionary Computation Conference. ACM, 2018. http://dx.doi.org/10.1145/3205455.3205642.

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Innocenti, Carlo. "Kinematic Clearance Sensitivity Analysis of Spatial Structures With Revolute Joints." In ASME 1999 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/detc99/dac-8679.

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Abstract The paper presents a new method to assess the influence of joint clearances in spatial structures that are composed of links connected by revolute joints. The method allows assessment of the amount by which joint clearances affect the rigid-body position of a generic link of the structure when an external load is exerted on the link. Unlike other procedures, the proposed method relies on the clearance-free idealization of the structure under investigation. An example shows application of the proposed method to the analysis of the structure derived from a multi-loop manipulator by free
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spanu, ilaria, cristina vettori, raffaello giannini, and donatella paffetti. "Spatial genetic structure of Taxus baccata L. relict population." In Secondo Congresso Internazionale di Selvicoltura = Second International Congress of Silviculture. Accademia Italiana di Scienze Forestali, 2015. http://dx.doi.org/10.4129/cis-is-str.

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Payne, Joshua L., and Margaret J. Eppstein. "Emergent mating topologies in spatially structured genetic algorithms." In the 8th annual conference. ACM Press, 2006. http://dx.doi.org/10.1145/1143997.1144032.

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Udoh, Ikpoto E. "A Concise Methodology for the Design of Statically-Equivalent Deep-Offshore Mooring Systems." In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-23054.

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Model testing of deepwater offshore structures often requires the use of statically-equivalent deepwater mooring systems. The need for such equivalent systems arises due to the spatial limitations of wave basins in accommodating the dimensions of the direct-scaled mooring system. With the equivalent mooring system in place and connected to the model floater, the static global restoring forces and global stiffness of the prototype floating structure can be matched (to within some tolerance) by those of the model for specified offsets in the required degrees of freedom. A match in relevant stati
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Huang, Shih-Lin, Chin-Chou Chu, Chien C. Chang, and H. S. Tzou. "Electromechanical Coupling and Signal Distribution of a Circular Cylindrical Shell Coupled With Segmented Sensors." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-68016.

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The direct piezoelectric effect has long been recognized as an effective electromechanical coupling effect applied to designs of various transducers. Conventional sensor design usually follows three design principles: 1) the tension/compression design, 2) the bending or flexible design and 3) the shear design. These are mostly point-type transducers monitoring responses of discrete locations and, thus, they are not suitable to dynamic spatial monitoring of large-scale distributed structures, such as shells and plates. Accordingly, distributed designs and configurations, such as the segmentatio
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Zeringue, Henry C. "Microtechnologies for Neurobiology." In ASME 2010 First Global Congress on NanoEngineering for Medicine and Biology. ASMEDC, 2010. http://dx.doi.org/10.1115/nemb2010-13341.

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Oscillatory activity in cortical networks is thought to provide the foundation for many high-level processes including working memory and attention. It has been shown that spatial information propagation delay and connectivity density can determine the innate properties of local network activity. The initial formation of neuronal networks in the central nervous system occurs due to the interaction of the genetic programming of the cells and the presentation of external molecular cues. The activity-driven refinement that occurs later, giving rise to the highly complex networks within the brain,
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Reports on the topic "Spatial genetic structures"

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Yaremchuk, Olesya. TRAVEL ANTHROPOLOGY IN JOURNALISM: HISTORY AND PRACTICAL METHODS. Ivan Franko National University of Lviv, 2021. http://dx.doi.org/10.30970/vjo.2021.49.11069.

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Our study’s main object is travel anthropology, the branch of science that studies the history and nature of man, socio-cultural space, social relations, and structures by gathering information during short and long journeys. The publication aims to research the theoretical foundations and genesis of travel anthropology, outline its fundamental principles, and highlight interaction with related sciences. The article’s defining objectives are the analysis of the synthesis of fundamental research approaches in travel anthropology and their implementation in journalism. When we analyze what metho
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