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    UHF Metamaterial Absorber with Small-Size Unit Cell by Combining Fractal and Coupling Lines by Shicheng Fan, Yaoliang Song

    Published 2018-01-01
    “…Due to the small ratio, it can be widely used in radiation suppression for microwave relay communication such as mobile communication and wireless network by changing the parameters of the structure.…”
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    Article
  3. 2763

    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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    Article
  4. 2764

    Analysis on the coverage performance and networking scheme of an MEO constellation by Yanbin ZHAO, Renning WANG, Peipei HU

    Published 2022-04-01
    “…Geostationary earth orbit (GEO) satellite orbit position resources have been scarce for a long time.The development of giant low-orbit satellite constellations has made the low-orbit resources unprecedentedly scarce.As a compromise between GEO and low earth orbit (LEO) constellations, the medium earth orbit (MEO) constellation will surely become a battle field for all countries.Referring to various MEO constellations in the world and our national conditions, a (6+4) MEO constellation was proposed.STK (Satellite Tool Kit) was used to simulate and analyze the constellation coverage performance, inter-satellite link characteristics, gateway site selection and coverage performance.Inter-orbit communication was realized through ground station relay, effectively avoiding various problems through inter-satellite links.The system was more simple and steady.It's much valuable in strategy in the circumstance of global low-orbit resources scarce.…”
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    Article
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    Hierarchical task offloading in heterogeneous cellular network:modeling and optimization by Lindong ZHAO, Wenqin ZHUANG, Jianxin CHEN, Liang ZHOU

    Published 2020-04-01
    “…To improve the efficiency of computation offloading,a hierarchical task offloading framework based on device-to-device (D2D) communication,mobile edge computing and cloud computing was proposed,in which cooperative D2D relay technology was introduced to assist users to access remote computing resources.Considering the negative effects of uplink channel congestion,limited edge computing capability,D2D reuse interference and backhaul delay of cloud computing in the multi-user scenario of the proposed framework,a game theory based offloading scheduling and load balancing scheme was developed by fully taking advantage of the computing and communication resources in the proposed framework.The simulation results demonstrate that the proposed scheme can effectively reduce end-to-end delay and offloading energy consumption,and also has good stability even when the network resources are limited.…”
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  7. 2767
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    The Design and Construction of an Automatic and Android Controlled Change Over Switch. by Turyasingura Gideon

    Published 2023
    “…Arduino is used as the controller to the entire system. Relay controlled by the Arduino are used to switch power supply between the different sources to load depending on the availability and priority. …”
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    Thesis
  9. 2769

    The Design and Construction of an Automatic and Android Controlled Change Over Switch. by Turyasingura, Gideon

    Published 2023
    “…Arduino is used as the controller to the entire system. Relay controlled by the Arduino are used to switch power supply between the different sources to load depending on the availability and priority. …”
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    Thesis
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  11. 2771

    An Analysis of the Outcomes of Language Contacts: with Specials Reference to Arabi-Malayalam by Sayed Saidalavi Cheerangote

    Published 2022-12-01
    “…Several periodicals were published in AM language to preach the basic tenets of Islam to the commoners and to make them aware of the evil practices and superstitions existed in those days. …”
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  12. 2772

    Cultura Organizacional e Estágios de Internacionalização : um Estudo em Quatro Empresas do Segmento de Metal-Mecânico-Elétrico Brasileiro by Lígia Maria Heinzmann, Denise Del Prá Netto Machado

    Published 2014-01-01
    “…Nas empresas Beta e Delta, os valores culturais estão presentes e na empresa Gamma eles estão parcialmente presentes. Com relaçã o às dimensões culturais, o coletivismo e a congruência cultural predominam. …”
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  13. 2773

    Designing and Assessing Courses and Curricula : a practical guide / by Diamond, Robert M.

    Published 2008
    Table of Contents: “…Preface -- Acknowledgments -- About the author --Part 1: Frame Of Reference -- 1: Learning-centered approach to course and curriculum design -- 2: Expanding role of faculty in accreditation and accountability -- 3: Staying informed -- 4: Scholarship and faculty rewards -- 5: Introduction to the model and its benefits -- 6: Diagramming -- Part 2: Process -- 7: Making the decision to go ahead -- 8: Getting started -- 9: Linking goals, courses, and curricula -- 10: Gathering and analyzing essential data -- 11: Thinking in the ideal -- 12: Adjusting from the ideal to the possible -- 13: Clarifying instructional goals and learning outcomes -- 14: Designing and implementing your assessment plan: Overview and assessing a curriculum -- 15: Designing and implementing your assessment plan: Assessing a course -- Part 3: Designing, Implementing, And Assessing The Learning Experience -- 16: Designing the learning experience: Research on teaching and learning -- 17: Designing the learning experience: Your instructional options -- 18: Using technology to support learning / Wallace Hannum -- 19: Distance learning / Wallace Hannum -- 20: Meeting the needs of adult learners / G Roger Sell -- 21: Addressing diversity / G Roger Sell -- 22: Developing a learning-centered syllabus -- Part 4: Your Next Steps -- 23: Using your data: curriculum and course revision -- 24: Learning from experience -- Resources -- Case studies -- References -- Index.…”
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  14. 2774

    Teacher Education Systems in Africa in the Digital Era /

    Published 2015
    Table of Contents: “…Preface -- 1. Introduction / Adesoji Oni -- 2. Re-profiling the teacher and teacher educators / Pai Obanya -- 3. …”
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    Book
  15. 2775

    Energy Economics : Theory and Applications / by Zweifel, Peter, Erdmann, Georg, Praktiknjo, Aaron

    Published 2017
    Table of Contents: “…Preface -- Introduction -- Energy in Science and Engineering -- Investment and Profitability Calculation -- Bottom-Up Analysis of Energy Demand -- Top-Down Analysis of Energy Demand -- Energy Reserves and Sustainability -- External Costs -- Markets for Liquid Fuels -- Markets for Gaseous Fuels -- Markets for Solid Fuels and CO2 Emissions -- Uranium and Nuclear Energy -- Markets for Electricity -- Economics of Electrical Grids.…”
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