1,720,953 research outputs found
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
Historisk utvikling av Ertevannet - studert ved hjelp av paleolimnologiske metoder.
No full textPaleolimnologiske studier av akkumulering av lakustrine sedimenter gir verdifull og mangfoldig innsikt i historiske miljøendringer, og tilbyr dermed et grunnlag for å undersøke innsjøforhold i tråd med målene i vannrammedirektivet (VFD). Denne paleolimnologiske studien søker å rekonstruere tidligere miljøendringer i Ertevannet, som for tiden er klassifisert som økologisk fattig i henhold til vannrammedirektivet, og å evaluere hvordan endringer i arealbruk innenfor nedbørfeltet har påvirket innsjøens produktivitet.
En sedimentkjerne, som målte 45 cm, ble utvunnet fra en innsjø omgitt av områder med intensiv dyrking, som representerer perioden fra 1934 til 2024. Denne kjernen ble analysert for sedimentasjonsrater, totalt fosfornivå, algepigmenter og innhold av organisk materiale. Resultatene indikerer at perioden fra 1934 til 1950 viste relativt lave nivåer av algeproduktivitet og redusert sedimentavsetning, noe som gjenspeiler en tid med begrensede menneskelige forstyrrelser. Høytrykksvæskekromatografi (HPLC)-analyse av sedimentet avdekket de viktigste karotenoidene som var tilstede, inkludert alloxanthin, cantaxanthin, fucoxanthin og lutein, noe som tyder på eksistensen av kiselalger, cyanobakterier, kryptofytter og grønnalger, men i lavere konsentrasjoner.
Sedimentkjernen indikerer en periode med betydelige endringer rundt 1960, karakterisert av en synkron økning i alle målte variabler, som pigmentkonsentrasjoner, fosfor, organisk innhold og tørrvekt. Disse endringene samsvarer med betydelige endringer i arealbruk i nedslagsfeltet, inkludert jordutjevning, drenering og reduksjon av gresskledde bufferenger, noe som indikerer en sterk menneskeskapt effekt på næringsstofftilførselen av fosfor (P) til innsjøen, noe som øker algeveksten. Fosforprofilen viser en forhøyet topp i 1970 (0,85 mg P/g), etterfulgt av en langvarig periode med stabilitet frem til de siste årene, om enn ved lavere konsentrasjoner, noe som indikerer en overgang fra ekstern næringstilførsel til prosesser i innsjøen.
Sedimentasjonsraten holdt seg relativt stabil fra 1963 og frem til de senere årene, bortsett fra 2024, da en sedimentakkumuleringsrate på 2,047 cm/år ble observert, sannsynligvis på grunn av avsetning av ferskt og ukonsolidert materiale. Den samtidige økningen i klorofyll-a og organisk materiale fra 2010, sammen med en nedgang i tørrvekt, gjenspeiler en økning i autokton produksjon av organisk materiale og et beriket næringsmiljø. Til sammenligning har det vist en stort sett lik regional følsomhet for menneskeskapt påvirkning i Glomma-Sør; responsene var imidlertid stedsspesifikke på grunn av varierende nedslagsfeltsegenskaper.
De samtidige økningene i alloxanthin, cantaxanthin, fucoxanthin og lutein fra 2010 antyder en positiv respons fra flere algegrupper under eutrofiske forhold. Forståelse av de langsiktige registreringene av innsjøhistorien har muliggjort en vurdering av økosystemets respons på menneskeskapte forstyrrelser og kan gi et nyttig verktøy for utvikling av fremtidige måleprotokoller.Paleolimnological studies of lacustrine sediment accumulation provide valuable and diverse insights into historical environmental changes, thereby offering a baseline for investigating lake conditions in line with the objectives of the Water Framework Directive (WFD). This paleolimnological study seeks to reconstruct past environmental changes in Lake Ertevannet, which is currently classified as ecologically poor under the Water Framework Directive, and to evaluate how changes in land use within the watershed have impacted lake productivity.
A sediment core, measuring 45 cm in length, was extracted from a lake encircled by areas of intensive cultivation, representing the period from 1934 to 2024. This core was analyzed for sedimentation rates, total phosphorus levels, algal pigments, and organic matter content. The results indicate that the period from 1934 to 1950 exhibited relatively low levels of algal productivity and diminished sediment deposition, reflecting a time of limited human disturbances. High-Performance Liquid Chromatography (HPLC) analysis of the sediment revealed the main carotenoids present, including Alloxanthin, Canthaxanthin, Fucoxanthin, and Lutein, suggesting the existence of diatoms, cyanobacteria, cryptophytes, and green algae, although in lower concentrations.
The sediment core indicates a period of significant changes occurring around 1960, characterized by a synchronous increase in all measured variables, such as pigment concentrations, phosphorus, organic content, and dry weight. These alterations correspond with considerable land-use changes in the catchment area, including land leveling, drainage, and the reduction of grassy buffer meadows, indicating a strong anthropogenic effect on nutrient phosphorus (P) flux to the lake, which enhances algal growth. The phosphorus profile reveals an elevated peak in 1970 (0.85 mg P/g), followed by a protracted period of stability until recent years, albeit at lower concentrations, indicating a transition from external nutrient supply to in-lake processes.
The sedimentation rate remained relatively stable from 1963 until recent years, except for 2024, when a sediment accumulation rate of 2.047 cm/year was observed, likely due to the deposition of fresh and unconsolidated materials. The concurrent increase in chlorophyll-a and organic matter from 2010, alongside a decline in dry weight, reflects an increase in autochthonous organic matter production and an enriched nutrient environment. Comparatively, it has demonstrated a broadly similar regional sensitivity to anthropogenic impact in Glomma-Sør; however, responses were site-specific due to varying catchment properties.
The simultaneous increases in Alloxanthin, Canthaxanthin, Fucoxanthin, and Lutein from 2010 suggest a positive response of multiple algal groups under eutrophic conditions. Understanding the long-term records of lake history has enabled an assessment of the ecosystem's response to anthropogenic disturbances and may provide a useful tool for the development of future measurement protocols
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
- …
