1,720,954 research outputs found
A SURVEY ANALYSIS ON COMPACT UWB CIRCULAR MONOPOLE ANTENNA WITH MULTIPLE NOTCHED BANDS
No full textEvolution in high speed wireless communication technology triggers the necessity for wideband antennas in portable devices. Federal communication commission (FCC) has authorized 3.1 GHz to 10.6 GHz for ultra widebandapplications and is considered as eminent solution for emerging wireless technology due to its enticing merits like high data rate, jamming resistance and improved throughput capabilities. In recent years, ultra wideband(UWB) system has been requiredfor many applications because of its plenty of advantages, such as low complexity and low cost, resistant to severe multipath and jamming, etc. The increased growth of wireless technology has motivated researchers to design antennas. Ultra wideband(UWB) technologies have become very attractive due to the numerous advantages such as gigabit/second-level data rate, high security, and low cost. Interference between ultra wideband(UWB) antennas and other narrow band systems have spurred growth in designing UWB antennas with notch characteristics. Most of these UWB antennas are designed to meet the UWB specification and are suitable for practical implementation. However, the existing narrowband services such as WLAN (5.15~5.35 and 5.725~5.85 GHz) and WiMAX (3.4~3.6 GHz) may produce interference with the UWB spectrum. The use of a notch filter has put an additional constraint on antenna design. Therefore, a UWB antenna with band-notch characteristics can be an alternative method
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
DUAL-BANDBAND-NOTCHED UWB PRINTED MONOPOLE ANTENNA
No full textThe look for proficient image denoising methods still is a substantial task, at the intersection of practical analysis and measurements. Disregarding the refinement of the as of late proposed methods, most algorithms have not yet achieved an alluring level of relevance. All demonstrate an exceptional performance when the image model relates to the algorithm presumptions, however unable to do as a general and make ancient rarities or evacuate image fine structures. The principle center of this paper is, to start with, to characterize a general mathematical and test methodology to think about and arrange established image denoising algorithms, second, to propose an algorithm (Non Local Means) tending to the safeguarding of structure in a digital image. The mathematical analysis depends on the analysis of the "method noise", characterized as the contrast between a digital image and its denoised form. The NL-implies algorithm is turned out to be asymptotically ideal under a non specific factual image model. The denoising execution of every considered method are looked at in four ways; mathematical: asymptotic request of extent of the method noise under consistency presumptions; perceptual-mathematical: the algorithms curios and their clarification as an infringement of the image model; quantitative trial: by tables of L2 separations of the denoised variant to the first image
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
- …
