1,720,953 research outputs found
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
Evaluation of cannabidiol stability in cosmetic products by measuring its content
Full text linkKanabidiol (CBD) je eden od kanabinoidov, najdenih v rastlini konoplji (Cannabis sativa L.). Ima relativno nizko toksičnost, povzroča malo znanih neželenih učinkov in ker ni psihoaktiven, ni uvrščen med prepovedane droge. Kanabinoide se vedno več uporablja v zdravilih, kozmetiki in prehranskih dopolnilih. Baza kozmetičnih sestavin Evropske komisije, CosIng, CBD navaja v svojem seznamu sestavin, ki so dovoljene za kozmetično uporabo. Kozmetični izdelki morajo biti varni, kakovostni in učinkoviti. Na njihovo kakovost vpliva tudi stabilnost, ki mora biti zagotovljena skozi celotno obdobje uporabe. CBD dobro prehaja skozi kožo, zato je možna uporaba mazil in transdermalnih obližev. CBD ima nevrozaščitni, antiepileptični, antipsihotični, analgetični, protivnetni, in protitumorni učinek. V Evropi in Ameriki je odobrena zdravilna učinkovina CBD in se uporablja v zdravilih z dovoljenjem za promet Sativex® in Epidiolex®.
V magistrski nalogi smo obravnavali stabilnost CBD v kozmetičnih izdelkih. Spremljali smo vpliv pogojev: svetlobe in temperature (4 °C, 25 °C in 40 °C), vpliv vsebnikov (plastična epruveta, plastičen lonček, brezzračna črpalka in aluminijasta tuba) in vpliv formulacij (krema za obraz brez in s konzervansom, krema za roke, regenerativna krema). Vsebnost CBD smo v obdobju treh mesecev ugotavljali s tekočinsko kromatografijo visoke ločljivosti.
Pri spremljanju vpliva temperature smo ugotovili, da razpad CBD s temperaturo narašča. V plastični epruveti je bil pri vzorcih brez konzervansa najmanjši razpad CBD pri 4 °C: 2,2 %, največji razpad pa pri 40 °C, in sicer, 14,1 %. Iz rezultatov je razvidno tudi, da ima svetloba vpliv na razpad CBD. Večji razpad CBD je bil viden pri vzorcih, izpostavljenih svetlobi.
Pri primerjavi vsebnikov se je za najboljšega izkazala aluminijasta tuba, ki ne prepušča svetlobe in zraka. Med vsemi formulacijami pa je bil CBD najbolj stabilen v kremi za obraz, kjer je bil razpad po treh mesecih 2,9 %, sledila je krema za roke z razpadom 4,6 %, za najslabšo pa se je izkazala regenerativna krema, kjer je razpadlo 13,2 % CBD.
Pri vseh vzorčenjih se je prisotnost konzervansa naravnega izvora izkazala za negativno, saj je bila stabilnost CBD slabša ob njegovi prisotnosti.Cannabidiol (CBD) is one of the cannabinoids found in the cannabis plant (Cannabis sativa L.). It has relatively low toxicity, causes little known side effects and is not psychoactive and therefore not enlisted among illicit drugs. Cannabinoids are used in medicines, cosmetics and nutritional supplements. In the European Commission\u27s cosmetic ingredients database, CosIng, CBD is authorized as approved cosmetic substance. Cosmetic products must be safe, of good quality and effective. Their quality is also affected by stability, which must be ensured throughout the period of use. CBD passes well through the skin, so ointments and transdermal patches are possible. CBD has neuroprotective, antiepileptic, antipsychotic, analgesic, anti-inflammatory and antitumor properties. Europe and United States of America have approved Sativex® and Epidiolex®, which contain CBD as an active pharmaceutical ingredient.
In Master thesis we evaluated the stability of CBD in cosmetic products. We monitored the effect of conditions: light and temperature (4 °C, 25 °C, 40 °C), containers (plastic tube, plastic pot, airless pump and aluminum tube) and formulations (preservative and preservative-free face cream, hand cream and regenerative cream). The CBD content was determined over a three-month period by high-performance liquid chromatography.
In monitoring the effect of temperature, we found that the decay of CBD increased with temperature. In the plastic tube, the minimum decay of CBD at 4 °C was 2.2% for the preservative free-face cream, and the highest decay was at 40 °C, namely 14.1%. The results show that light has an effect on the decay of CBD. Greater decay of CBD was seen in samples exposed to light. When comparing the containers, the aluminum tube, which does not transmit light and air, proved to be the best.
According to obtained results, most stable formulations were found in preservative-free face cream, with a decay of 2.9% after three months, followed by hand cream with a decay of 4.6%, and the worst was the regenerative cream, where it decomposed 13.2% of CBD.
We conclude, that the presence of a preservative of natural origin, was found to be negative, as the stability of CBD was impaired in its presence
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
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
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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