1,721,187 research outputs found
SungWon Lee
No full text학위논문(석사)--아주대학교 정보통신전문대학원 :정보통신공학과,2009. 2Network Centric Warfare(NCW) is becoming a prominent concept in the current trend of warfare. To support high quality communication between strategic or tactical units, Air Backbone Networks(ABN) will be constructed in the near future to take part in the NCW. The ABN may be constructed as the part of 2-Tier airborne networks, which is proposed by U.S army, and will be similar with a wireless mesh network. The ABN has dynamic variations in its topology so that efficient and reliable neighbor discovery protocol and robust and well-connected topology control are needed for coping with these high mobility environments.
The aircrafts constructing the ABN tends to have high dynamic mobility, causing frequent topology variations. This makes the research on reliable neighbor discovery an important factor in mobility management. However, the majority of the research pre-assumes a reliable neighbor discovery process so that every node can get the location information about nearby nodes and rarely consider the use of directional antennas.
This paper presents the Adaptive HELLO Message Scheduling algorithm for reliable and efficient mobility management and the Distributed Web-Topology Control algorithm for robust and well-connected network in ABN, using directional antennas. The performance and effectiveness is evaluated through mathematical analysis and simulation experiments via the QualNet simulator.Ⅰ. Introduction - 1
Ⅱ. Related Work - 3
A. Directional Antenna in Tactical Airborne Network - 3
B. Neighborhood Discovery Protocol(NHDP) - 3
C. Topology Control in Wireless Mesh Networks - 4
Ⅲ. Distributed Web-Topology Control - 6
A. Adaptive Neighbor Discovery Protocol - 6
1. System Design - 6
2. HELLO Message Scheduling Algorithm - 6
B. Distributed Web-Topology Conrtol - 10
1. Phase I : Two-Degree Link Establishment - 11
2. Phase II : Web-Link Formation - 14
Ⅳ. Performance Evaluation - 17
A. Environment - 17
B. Performance Evaluation of Adaptive Neighbor Discovery - 18
1. Mathematical Analysis - 18
2. Simulation Result - 19
C. Performance Evalutation of Distributed Web-Topology Control - 24
Ⅴ. Conclusion - 28
References - 30Maste
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Wireless ATM MAC layer protocol using WDWEDF and two-phase scheduling algorithm
No full textIn this paper, we propose and evaluate the performance of Wireless ATM MAC laver protocol to support efficiently various ATM traffics, such as CBR, VER, ABR and UBR, in wireless ATM network environments for reverse and forward link. The proposed MAC protocol could extend efficiently the service discipline of ATM traffics from wired network to wireless ATM network environments. Thus, available bandwidth. which is remained except the bandwidth for CBR and VER traffics, could be effectively allocated to ABR and UBR traffics. Especially. in view of reverse link, two-phase scheduling algorithm supports successfully variable characteristics of VER traffic. And, in view of forward link. Wireless Dynamic Weighted Earliest Deadline First' scheduling algorithm minimizes the mean cell delay and required buffer size. Simulation results show that proposed method provides effective performance in wireless ATM environments.
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe 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
Human cytomegalovirus induces and exploits Roquin to counteract the IRF1-mediated antiviral state
Full text linkRNA represents a pivotal component of host–pathogen interactions. Human cytomegalovirus (HCMV) infection causes extensive alteration in host RNA metabolism, but the functional relationship between the virus and cellular RNA processing remains largely unknown. Through loss-of-function screening, we show that HCMV requires multiple RNA-processing machineries for efficient viral lytic production. In particular, the cellular RNA-binding protein Roquin, whose expression is actively stimulated by HCMV, plays an essential role in inhibiting the innate immune response. Transcriptome profiling revealed Roquin-dependent global downregulation of proinflammatory cytokines and antiviral genes in HCMV-infected cells. Furthermore, using cross-linking immunoprecipitation (CLIP)-sequencing (seq), we identified IFN regulatory factor 1 (IRF1), a master transcriptional activator of immune responses, as a Roquin target gene. Roquin reduces IRF1 expression by directly binding to its mRNA, thereby enabling suppression of a variety of antiviral genes. This study demonstrates how HCMV exploits host RNA-binding protein to prevent a cellular antiviral response and offers mechanistic insight into the potential development of CMV therapeutics. © 2019 National Academy of Sciences.11sciescopu
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