1,720,994 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
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
Bioekologl dan Potensi Larva Diptera Pada Fitotelmata di Daerah Endemis Demam Berdarah Dengue (DBD) di Sumatera Barat
No full textFitotelmata adalah tumbuhan yang dapat menampung genangan air di bagian tubuhnya, tumbuhan ini dapat ditemukan dimana saja dengan jenis yang berbeda - beda, terutama di daerah tropis. Fitotelmata mempunyai peran yang sangat penting dalam membangun komunitas organisme yang mendiaminya. Genangan air yang tertampung pada bagian tumbuhan ini memberikan kehidupan pada berbagai fauna dan dimanfaatkan oleh berbagai jenis serangga termasuk ordo Diptera. Penelitian tentang keberadaan serangga pada fitotelmata sudah dilakukan oleh beberapa peneliti tetapi masih terbatas pada satu jenis fitotelmata, sehingga informasi keberadaan serangga pada beberapa jenis fitotelmata masih sangat terbatas. Sumatera Barat yang merupakan salah satu wilayah tropis, diperkirakan banyak ditemukan fitotelmata karena didukung oleh faktor lingkungan yang sesuai (suhu, kelembaban dan curah hujan tinggi). Banyaknya fitotelmata di suatu daerah tentu akan menambah tempat perindukan serangga, yang secara tidak langsung akan berdampak pada peningkatan populasi serangga termasuk Diptera. Sebagai salah satu ordo serangga yang banyak jumlahnya dan berperan penting dalam kehidupan manusia, sangat diperlukan berbagai informasi tentang ordo Diptera khususnya yang mendiami fitotelmata pada daerah endemis Demam Berdarah Dengue (DBD) di Sumatera Barat, dan upaya memperoleh informasi tersebut akan lebih terarah apabila diperoleh dari hasil suatu penelitian, meliputi jenis fitotelmata, jenis dan kepadatan larva, fluktuasi larva Diptera, hubungan kualitas air fitotelmata dengan kepadatan larva dan potensi larva sebagai vektor penyakit. Tujuan dari penelitian ini adalah untuk mengetahui (1) jenis dan tipe fitotelmata, jenis kepadatan serta pengelompokan larva Diptera pada fitotelmata (2) fluktuasi larva Diptera pada fitotelmata (3) hubungan kualitas fisika kimia air pada fitotelmata dengan jumlah individu larva Diptera (4) potensi larva Diptera sebagai vektor dan potensi fitotelmata sebagai tempat perindukan larva di daerah endemis DBD di Sumatera Barat. Penelitian dilakukan bulan Januari sampai Desember 2012, di tiga lokasi yaitu kelurahan Surau Gadang kota Padang, Tarok Dipo kota Bukittinggi dan Tarok kota Payakumbuh. Pengambilan sampel air pada fitotelmata menggunakan pipet yang sesuai dengan ukuran dan tipe fitotelmata. Larva yang diperoleh diidentifikasi mengacu pada beberapa buku kunci identifikasi. Analisis data kepadatan larva Diptera mengacu pada formula Michael (1984). Untuk menentukan pengelompokan didasarkan pada perbedaan jumlah kepadatan larva Diptera pada ke tiga lokasi dan pada ke empat fitotelmata digunakan rumus jarak Euclidean (Euclidean Distance). Analisis pengelompokan pada ke empat jenis fitotelmata dengan Cluster Analysis yang direkonstruksi dalam bentuk diagram pohon (dendrodgram) menggunakan program komputasi Paleontological Statistic (PAST) versi 2.10. Hubungan jumlah individu larva dengan kelembaban, curah hujan dan suhu dianalisis secara statistik dengan model regresi linear ordinary least square, menggunakan program komputasi Paleontological Statistic (PAST) versi 2.10 dan untuk melihat kecenderungan hubungan jumlah individu dengan faktor iklim dipresentasikan melalui diagram Scatter Plot menggunakan program Excell. Hubungan jumlah kepadatan larva dengan Diptera dengan kulitas fisika - kima air fitotelmata meliputi (volume air, suhu, pH, Cadmium, Calsium, Magnesium, Sodium, Zinc, Klorida, dan Sulfat) dianalisis dengan multivariate canonical Corespondence Analyisis (CCA) menggunakan program komputasi Paleontological Statistic (PAST) versi 2.10. Potensi larva Diptera sebagai vektor pada fitotelmata dilakukan dengan cara mendeteksi virus pada larva yang dominan mendiami fitotelmata menggunakan metode reverse transcriptase polymerase chain reaction (RT-PCR). Sedangkan untuk mengetahui potensi fitotelmata sebagai tempat perindukan larva, di dasarkan pada banyaknya jumlah larva yang mendiami fitotelmata. Hasil penelitian di daerah endemik DBD secara keseluruhan ditemukan 15 famili, 20 jenis dan enam jenis fitotelmata yang terdiri dari: Famili Agavaceae (Agave sp.); Araceae (Colocasia gigantea, Colocasia esculenta); famili Bromeliaceae (Ananas commosus); famili Bambusaceae (Bambusa vulgaris); famili Cannaceae (Canna sp.); keluarga Commelinaceae (Rhoeo menghitamkan); famili Fabaceae (Delonyx regia, Erythrina lithosperma, Pterocarpus indicus); famili Lamiaceae (Coleus sp.); famili Malvaceaea (Theobroma cacao); famili Meliaceaea (Switenia mahagoni, Toona sureni); famili Moraceae (Ficus benyamina); Famili Musaceae (Musa paradisiaca, Ravenala madagascariensis); famili Pandanaceae (Pandanus amaryllifolius); famili Palmae (Cocos nusifera); keluarga Zingiberaceae (Curcuma domestica). Jenis dan tipe fitotelmata yang dapat menampung dan menahan genangan air, sebagai tempat pengambilan sampel ada empat jenis yaitu Pandanus amaryllifolius (pandan wangi); Colocasia esculenta (talas, kemumu); Ananas commosus (nanas) dan Bambusa vulgaris (bambu), dan dua tipe fitotelmata yaitu tipe kelopak daun dan tipe tunggul bambu. Larva Diptera yang ditemukan terdiri dari empat famili dan tujuh jenis yaitu: famili Chironomidae (Chironomus sp.); Culicidae (Aedes aegypti, Ae. albopictus, Culex tritaeniorhynchus, dan Armigeres subalbatus); Tipulidae (Tipula sp.); Psychodidae (Psychoda sp.). Rata rata jumlah kepadatan jenis larva Diptera pada ke tiga lokasi yang tertinggi adalah larva Ae. albopictus sebesar 0,60 individu/ml dari di kota Bukittinggi, yang terendah 0,49 individu/ml di Payakumbuh. Tingkat perbedaan jumlah kepadatan larva Diptera yang paling besar adalah antara Padang dengan Bukitinggi 0,408 dan yang paling kecil adalah antara Padang dan Payakumbuh 0,198. Rata-rata jumlah kepadatan jenis larva yang tertinggi pada ke empat jenis fitotelmata adalah larva Ae.albopictus sebesar 0,60 individu/ml pada pandan dan terendah 0,36 individu/ml pada bambu. Tingkat perbedaan jumlah kepadatan larva paling besar adalah antara larva yang mendiami bambu dengan nanas 0,337 dan perbedaan yang paling kecil adalah antara larva yang mendiami pandan dengan talas 0,102. Ada dua kelompok jumlah kepadatan larva dari ke empat jenis fitotelmata yaitu kelompok 1. nanas, talas dan pandan dan kelompok 2. bambu. Fluktuasi jumlah individu larva Diptera bervariasi setiap bulan cenderung meningkat pada bulan September. Jumlah individu larva berkorelasi positif dengan kelembaban dan curah hujan (r=0,534; p<0,01) dan (r = 0,418; p <0,01), tetapi berkorelasi negatif dengan suhu (r=-0,418; p<0,01). Hubungan kepadatan larva Diptera dengan kualitas air pada fitotelmata berdasarkan lokasi sebagai penentu adalah kota Padang dengan score CCA sebesar 1, 669. Jenis larva penentu adalah, larva Ae. aegypti dengan score CCA sebesar 1,651. Faktor kimia air sebagai penentu adalah pH dengan score CCA sebesar 0,690 dan faktor fisika air sebagai penentu adalah suhu dengan score CCA sebesar 0,972. Hubungan kepadatan larva Diptera berdasarkan tipe fitotelmata, sebagai penentu adalah talas dengan score CCA sebesar 1,143. Jenis larva sebagai penentu adalah larva Psychoda sp. dengan sore CCA sebesar 0,966. Faktor kimia air sebagai penentu adalah pH dengan score CCA sebesar 0,933 dan kualitas fisika air sebagai penentu adalah suhu dengan nilai score CCA sebesar 0,621. Hasil deteksi virus dengue pada larva Ae. albopictus yang positif mengandung virus dengue ditemukan pada larva Ae. albopictus yang mendiami talas yang berasal dari kota Bukititnggi dan yang mendiami talas dan tunggul bambu yang berasal dari kota Payakumbuh dengan serotype DEN 1 dan DEN 4. Fitotelmata pandan, talas, bambu dan nanas berpotensi sebagai tempat perindukan larva Diptera khususnya larva Ae.albopictus pada ke tiga lokasi
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
- …
