Showing 601 - 620 results of 657 for search '"extinction"', query time: 0.04s Refine Results
  1. 601

    Comparison between stochastic and deterministic selection-mutation models by Azmy S. Ackleh, Shuhua Hu

    Published 2007-01-01
    “…In the pure selection case, theoutcome is known to be that of competitive exclusion, where thesubpopulation with the largest growth-to-mortality ratio willsurvive and the remaining subpopulations will go extinct. We showthat if the selection-mutation matrix is reducible, thencompetitive exclusion or coexistence are possible outcomes. …”
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  2. 602

    Deep water vetulicolians from the lower Cambrian of China by Shuhan Ma, Julien Kimmig, James D. Schiffbauer, Ruibo Li, Shanchi Peng, Xianfeng Yang

    Published 2025-01-01
    “…Vetulicolians are an enigmatic phylum of extinct Cambrian marine invertebrates. They are particularly diverse in the Chengjiang Biota of China, but representatives have been recovered from other Fossil-Lagerstätten (Cambrian Stage 3-Drumian). …”
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  3. 603

    Population dynamics of Schrödinger cats by Foster Thompson, Alex Kamenev

    Published 2025-02-01
    “…We apply this formalism to study a prototypical "Schrödinger cat" population model on a $d$-dimensional lattice, which exhibits a phase transition between a dark extinct phase and an active phase that supports a stable quantum population. …”
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  4. 604

    Enhancing Malaria Control Strategy: Optimal Control and Cost-Effectiveness Analysis on the Impact of Vector Bias on the Efficacy of Mosquito Repellent and Hospitalization by Iffatricia Haura Febiriana, Abdullah Hasan Hassan, Dipo Aldila

    Published 2024-01-01
    “…On the other hand, malaria will always go extinct in the population if the basic reproduction number is less than one. …”
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  5. 605

    Spatiotemporal Patterns in a Ratio-Dependent Food Chain Model with Reaction-Diffusion by Lei Zhang

    Published 2014-01-01
    “…Furthermore, we consider the pattern formation in the case of which the top predator is extinct, that is, the evolution process of the system near the equilibrium point (u1*,v1*,0), and find that the model dynamics exhibits stripes-spots pattern replication. …”
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  6. 606

    Functional insights from an exploration of the inner structure of the patella: new perspectives for the study of the hominin fossil record by Marine Cazenave

    Published 2022-09-01
    “…This contribution is a short review of the functional significance of the patella in extant catarrhines and extinct hominins and of current functional, adaptive and evolutionary-related questions concerning the fossil hominin record. …”
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  7. 607

    High-resolution bathymetry coupled with 3D models of hydrothermal vents from opportunistically-acquired imagery: Aurora vent field, Arctic Ocean by Tea Isler, Michael Jakuba, Tom Kwasnitschka, Autun Purser, Andrew Klesh, Vera Schlindwein, Christopher R. German

    Published 2024-12-01
    “…The new vents were measured at up to 17 m height from 3D models generated using structure-from-motion techniques applied to opportunistically acquired imaging data collected while in exploration mode. The extent of extinct sulfides present, together with the towering height of vents are consistent with a period of sustained high-temperature venting at Aurora.…”
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  8. 608

    STUDIES ON CRITICALLY ENDANGERED GENUS CEROPEGIA FROM WESTERN GHATS OF NASHIK DISTRICT, MAHARASHTRA, INDIA by Madhukar Pandharinath SANGALE, Sanjay Ragho KSHIRSAGAR, Hemendra Prabhakar SHINDE

    Published 2024-12-01
    “…Since the majority of the reported Ceropegia species were previously classified as vulnerable or endangered by the IUCN, conservation efforts ought to be pursued in order to slow the rate at which these species are becoming extinct. Present research article deals with taxonomy, flowering and fruiting period, present status, threats of critically endangered Ceropegia species found in and around Western Ghats region of Nashik district. …”
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  9. 609

    Exploring ethnomathematics in Malay architecture and traditional hall in Penyengat Island and connecting it to geometry in elementary schools by Rizki Rahmali Fadhillah, Zetra Hainul Putra, Zufriady, Jismulatif, Ayman Aljarrah

    Published 2025-02-01
    “…The progress of globalization has led to many technological advances, which have resulted in many cultures being abandoned or even extinct. Ethnomathematics research can be a solution for preserving culture, because it integrates culture and learning materials in schools. …”
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  10. 610

    Inculcating of sasak local cultural values in learning at elementary school by Aswasulasikin Aswasulasikin, Dina Fadilah, Yul Alfian Hadi

    Published 2022-12-01
    “…The data obtained can be described as follows: first, the majority of local sasak cultures are almost extinct due to the rapid development of technology that exhibits external cultures that are easily accessed by the younger generation, while the local culture of the Sasak cannot keep up with these technological developments. …”
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  11. 611

    Considerations for Building Climate-based Species Distribution Models by David N. Bucklin, Mathieu Basille, Stephanie S. Romañach, Lauren A. Brandt, Frank J. Mazzotti, James I. Watling

    Published 2016-10-01
    “…A given species may adjust to new conditions in-place, move to new areas with suitable climates, or go extinct. Scientists and conservation practitioners use mathematical models to predict the effects of future climate change on wildlife and plan for a biodiverse future. …”
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  12. 612

    Considerations for Building Climate-based Species Distribution Models by David N. Bucklin, Mathieu Basille, Stephanie S. Romañach, Lauren A. Brandt, Frank J. Mazzotti, James I. Watling

    Published 2016-10-01
    “…A given species may adjust to new conditions in-place, move to new areas with suitable climates, or go extinct. Scientists and conservation practitioners use mathematical models to predict the effects of future climate change on wildlife and plan for a biodiverse future. …”
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    Article
  13. 613

    Dynamics of an SIS reaction-diffusion epidemic model for diseasetransmission by Wenzhang Huang, Maoan Han, Kaiyu Liu

    Published 2009-12-01
    “…The reproductive number is defined which plays an essential role in determining whether the disease will extinct or persist. We have showed that the disease will die out when the reproductive number is less than one and that the endemic equilibrium occurs when the reproductive number is exceeds one. …”
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  14. 614

    Vertebral, rib, and osteoderm morphology and histology of Middle Triassic diapsid Eusaurosphargis by Nicole Klein, Torsten M. Scheyer

    Published 2024-12-01
    “…Furthermore, chondroid bone is identified in the osteoderms of Eusaurosphargis aff. dalsassoi, which is the oldest evidence of this tissue in osteoderms of an extinct tetrapod. For comparison, μCT data of two neural arches tentatively identifiable as pertaining to the enigmatic Middle Triassic Saurosphargis voltzi (the holotype and only specimen of this taxon is considered lost) could be included. …”
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  15. 615

    Le texte victorien à l’âge postmoderne : jouvence ou sénescence ? Fingersmith de Sarah Waters et le mélodrame victorien by Georges Letissier

    Published 2006-12-01
    “…And the trend shows no signs of becoming extinct ! But what do these updated versions of 19th century fictions tell us about the legacy of Victorian literature in the 21st century ? …”
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  16. 616

    Provision of essential resources as a persistence strategy in food webs by Raatz, Michael

    Published 2023-09-01
    “…Larger dietary essentiality, i.e. a stronger dependence of the predator or the competitor on the essential resource can increase the invasion growth rate of the focal prey to positive values, thus promoting its persistence when it would go extinct for low essentiality. This research shows that essential resources and the higher-order interactions created by them should be considered in community ecology. …”
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  17. 617

    Learning and intergenerational communication through digital storytelling in the first grades of primary school: Yesteryear Jobs by Mouchtari Efthalia, Meimaris Michalis, Gouscos Dimitris, Sfyroera Maria

    Published 2015-10-01
    “…Yesteryear jobs have been chosen as the theme of this research, based on the premise that, as computers and automated systems increasingly take the jobs humans once held, entire professions become extinct, and some of these endangered professions, from a milkman to an iceman, could become better known to primary school children through storytelling from elderly people. …”
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  18. 618
  19. 619

    Lost and found: the rediscovery of the lost fern species Asplenium achalense (Aspleniaceae) and assessment of its conservation status by Marcelo Arana, Evangelina Natale, Antonia Oggero

    Published 2024-09-01
    “…The species should be considered Regionally Extinct in its locus classicus in Comechingones biogeographical province. …”
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  20. 620

    Stochasticity, Selection, and the Evolution of Cooperation in a Two-Level Moran Model of the Snowdrift Game by Brian McLoone, Wai-Tong Louis Fan, Adam Pham, Rory Smead, Laurence Loewe

    Published 2018-01-01
    “…Second, we identify a threshold effect for the payoff matrix in the Snowdrift Game, such that below (above) a determinate cost-to-benefit ratio, cooperation will almost surely fix (go extinct) in the population. This second result calls into question the explanatory reach of traditional continuous models and suggests a possible alternative explanation for high levels of cooperative behavior in nature.…”
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