1,720,957 research outputs found
In-band Emission Interference in D2D-enabled Cellular Network: Modelling, Analysis, and Mitigation
No full textDevice to device (D2D) links density is expected to increase dramatically in future networks. The D2D user equipments (DUEs) reuse frequency resources to cover the next generation D2D-enabled cellular network requirements. The cellular user equipments (CUEs) and DUEs experience in-band emission interference (IEI) from DUEs that use adjacent frequencies.
In this thesis, the IEI impact in D2D-enabled cellular network is investigated comprehensively. In the first part, the IEI from the DUEs to cellular links is initially mitigated for all time slots. An open loop power control (OLPC)-based scheme is introduced for the D2D discovery scenario to mitigate the IEI and compared with recent proposed methods. The scheme defines time slots to boost the DUEs transmission power, where the IEI is mitigated and the D2D link performance is improved. A simulation system is used to evaluate the IEI impact. The IEI from DUEs to cellular links is mitigated without taking into account the proposed power control can affect the DUEs that use the same frequency resource and the constraints can affect the D2D link performance.
Therefore, the second part expands the IEI investigation, where the D2D-enabled cellular network is modelled by taking into account the IEI interferers using the stochastic geometry tool. The IEI impact is analysed and mitigated for all time slots by taking into account the D2D links performance. The IEI impact is evaluated theoretically in terms of coverage probability and data rate for cellular link side, successful probability and data rate for D2D link side. The IEI intra-cell and IEI inter-cell are investigated separately to detect the dominant part of IEI. The expected reuse factor of the D2D resource blocks (DRBs) is derived to examing the number of DUEs that can be served when the IEI is or is not taken into account.
Following, a power-density based (PDB) strategy is proposed to mitigate the IEI by controlling the number of DUEs that use each DRB, and by allocating predefined DRBs to the DUEs that cause lowest interference power at the serving BS. The thinning process and Poisson hole process (PHP) are employed to remodel the network. The performance improvement can be achieved by employing this strategy is evaluated. The optimal DRBs setting is found that mitigates the IEI and improves the cellular link performance. Furthermore, the optimal power allocation (OPA) algorithm is proposed to mitigate the IEI by calculating the optimal DUEs transmission power profile that maximizes the DUEs sum rate and maintains the interference level at the BS below a predefined threshold. The performance improvement that can be achieved by employing this algorithm is also evaluated.
It is concluded that, in a D2D-enabled cellular network, the IEI impact is significant and needs to be considered to evaluate the performance of the future network accurately. Thus, the proposed model can be used to represent and evaluate the future network. Also, by employing the PDB strategy, the IEI can be mitigated effectively if the D2D links performance has higher priority than the number of DUEs required to be served for D2D discovery and transmission data scenarios. In case the required number of served DUEs in one time slot cannot be covered by PDB, the OPA algorithm and the OLPC-based strategy can be used for D2D data transmission and D2D discovery scenarios, respectively
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
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