Showing 881 - 900 results of 7,472 for search '"cognition"', query time: 0.06s Refine Results
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    Resource Allocation in a Cognitive Radio System with Imperfect Channel State Estimation by Tao Qin, Cyril Leung, Chunyan Miao, Zhiqi Shen

    Published 2010-01-01
    “…Cognitive radio (CR) is a promising concept for improving the utilization of scarce radio spectrum resources. …”
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    Article
  3. 883

    The medial and lateral orbitofrontal cortex jointly represent the cognitive map of task space by Liwei Tan, Yidan Qiu, Lixin Qiu, Shuting Lin, Jinhui Li, Jiajun Liao, Yuting Zhang, Wei Zou, Ruiwang Huang

    Published 2025-02-01
    “…Abstract A cognitive map is an internal model of the world’s causal structure, crucial for adaptive behaviors. …”
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    Article
  4. 884

    A contract-based cooperative spectrum sharing model in cognitive radio network by Guangqiang SHI, Ying LIU, Xiaomin MU

    Published 2016-05-01
    “…A contract-based cooperative spectrum sharing model in cognitive radio network was proposed.In this model,secondary user offers relay service for primary user when primary user's channel is poor.In return,when primary user's channel is good,secondary user can use spectrum with the underlay mode under the condition that the interference is limited.Contract theory in economics was introduced to this framework,the problem of collaboration between the primary and secondary users was modeled as a contract design problem,and the effectiveness function of evaluate primary and secondary users on contract revenue was set up.And the differential evolution algorithm was used to solve the problem.Finally,in different circumstances,primary user collaboration and un-collaboration were contrasted.The results showed that the main users under the condition of no additional input spectrum,not only save the sending power,but also effectively improve the data transfer rate,and improve the energy efficiency and spectrum efficiency.…”
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  5. 885

    Discourse-level structuring of information in narrative:Signalling structural, interactional and cognitive shifts by Tuija Virtanen

    Published 2011-07-01
    “…The linguistic signalling of the structural, interactional and cognitive shifts in information structuring is examined in two different kinds of narratives in written French. …”
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    A Game Theory Based Strategy for Reducing Energy Consumption in Cognitive WSN by Elena Romero, Javier Blesa, Alvaro Araujo, Octavio Nieto-Taladriz

    Published 2014-01-01
    “…Simulations are presented for several scenarios that demonstrate energy saving rates of around 65% as compared to WSNs without cognitive techniques.…”
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  11. 891

    Exercise Recommendation Model Based on Cognitive Level and Educational Big Data Mining by Yongming Pu, Hongming Chen

    Published 2022-01-01
    “…This paper combines the comprehensive cognitive analysis module and the classified knowledge point cognitive analysis module to analyze the cognitive degree of learners’ knowledge points. …”
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  12. 892

    The Effect of Sleep Deprivation on Junior Physicians’ Cognitive Performance and Irritability in the Kingdom of Bahrain by Abdulla Almusalam, Israa Sinan

    Published 2024-01-01
    “…Following that, the participants were then requested to complete a Brief Mood Introspection Scale (BMIS) to measure their mood, as well as a visual working memory assessment (cognitive task) to assess cognitive functions. The BMIS and cognitive tasks were completed before and after their on-call shifts. …”
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  13. 893

    Cognitive Wireless Networks Based Spectrum Sensing Strategies: A Comparative Analysis by Anandakumar Haldorai, Jeevanandham Sivaraj, Munivenkatappa Nagabushanam, Michaelraj Kingston Roberts

    Published 2022-01-01
    “…These applications range from enclosed system configurations in the home and office to alfresco enlistment in an opponent’s landmass in a strategic flashpoint. Cognitive radio networks (CRNs) can be created by integrating radio link capabilities with network layer operations utilizing cognitive radios. …”
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  14. 894

    Secure Cooperative Spectrum Sensing for the Cognitive Radio Network Using Nonuniform Reliability by Muhammad Usman, Insoo Koo

    Published 2014-01-01
    “…Both reliable detection of the primary signal in a noisy and fading environment and nullifying the effect of unauthorized users are important tasks in cognitive radio networks. To address these issues, we consider a cooperative spectrum sensing approach where each user is assigned nonuniform reliability based on the sensing performance. …”
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    Helping Teens Answer the Question “Who Am I?”: Cognitive Development in Adolescents by Rosemary V. Barnett

    Published 2005-12-01
    “… This is the second of a four-part series that will explore adolescence in terms of physical, cognitive, social, and moral development. This publication will focus on the cognitive development that adolescents experience. …”
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    Energy efficiency-based downlink resource allocation in cognitive small cell networks by Ya-nan JIA, Dian-wu YUE

    Published 2016-04-01
    Subjects: “…cognitive small cell networks…”
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