1,721,167 research outputs found
Development of optical devices in a flat-fibre platform
No full textThis thesis describes the development of optical devices in a novel flat-fibre platform. Device fabrication is achieved using direct grating writing and physical micromachining techniques.A series of experimental studies have been undertaken in order to optimise the fabrication of UV-written waveguides and Bragg gratings in the flat-fibre geometry. The UV-writing parameters have been investigated including fluence and duty cycle, together with hydrogen loading and alignment factors. Loss measurements have been performed on a variety of passive and active structures using a novel distributed Bragg grating technique. The measured propagation loss of a channel waveguide based UV-written was 0.13 dB/cm ± 0.03 dB/cm.Flat-fibre devices have been used as physical and refractive index sensors on a wedge flat-fibre structure. Through using UV-written Bragg gratings in series and parallel arrangement, it provides the capability of sensing two-dimensional bending and external refractive index variation in a single device.Another passive device that has been developed in flat-fibre is the multimode interference (MMI) device. The concept of using two micro-machined trenches to fabricate the MMI device has also been discussed. In this work, a successful 1x3 MMI device has been fabricated by using a high precision dicing saw and the excess loss was measured as 1.89 dB.Finally, the spectroscopy study of an erbium doped flat-fibre was performed. Absorption to about 0.32 dB/cm at 976 nm wavelength has been achieved in the erbium-doped flat-fibre. The first demonstration of signal amplification at wavelength of 1530 nm has been carried out where showing that the relative gain was 0.74 dB
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
PENINGKATAN PRODUKTIVITAS MASYARAKAT MELALUI PENGOLAHAN PUDING JAGUNG DI DESA SANROBONE KAB. TAKALAR
Full text linkBerbagai permasalahan harus segera diatasi guna meningkatkan  pemanfaatan jagung dalam negeri, di Kabupaten Takalar khususnya. menurunnya kondisi ekonomi masyarakat yang salah satunya dapat disebabkan oleh dampak dari pandemic covid-19 juga merupakan masalah bagi masyarakat sehingga masyarakat di tuntut untuk lebih kreatif dalam menciptakan peluang usaha lain yang berpotensi meningkatkan pendapatan mereka. Untuk mengatasi masalah tersebut, maka perlu dibangun model kemitraan. rendahnya pengetahuan masyarakat mengenai manfaat jagung  bagi  kesehatan  serta  minimnya  pengetahuan  masyarakat  mengenai  diversifikasi pengolahan jagung yang dapat bernilai ekonomis dan mampu meningkatkan inkam masyarakat, merupakan masalah yang penting untuk di kaji. Tujuan dari PkM ini adalah meningkatkan pengetahuan dan skill masyarakat melalui pengolahan pudding jagung. Metode yang dilakukan diawali dengan observasi, penentuan prioritas masalah, diskusi dan wawancara penentuan solusi. Kegiatan pengabdian ini berlangsung pada tanggal 13 Oktober 2021, tepatnya di Kantor Desa Sanrobone Kab. Takalar. Kegiatan ini melibatkan tim pengabdi Dr. Sumiaty, SKM., M.Kes selaku ketua dan Dr.Arni Rizqiani Rusydi sebagai anggota, merupakan dosen Fakultas Kesehatan Masyarakat Universitas Muslim Indonesia. Kegiatan ini diawali dengan penyuluhan mengenai kandungan gizi pada jagung dan dilanjutkan dengan praktek pembuatan puding jagung. Berdasarkan hasil pre dan post test pada pelaksanaan kegiatan, diketahui bahwa terdapat peningkatan pengetahuan ibu-ibu PKK sebesar 17,8%. Hasil  pengabdian  pada  masyarakat  ini  menjadi  penting  sebagai  bahan  rujukan  bagi masyarakat dalam meningkatkan produktivitas melalui pengolahan puding jagung dan memiliki nilai jual yang dapat meningkatkan perekonomiannya
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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