1,720,957 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
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
Bird Species Diversity in Turkey and Remote Sensing Habitat Parameters
Full text linkThesis (M.Sc.) -- İstanbul Technical University, Eurasia Institute of Earth Sciences, Yüksek LisansTez (eng) -- İstanbul Teknik Üniversitesi, Avrasya Yer Bilimleri Enstitüsü, Yüksek LisansEcosystems are large and difficult to access. Therefore, it is difficult to measure the biodiversity. However, The development of various remote sensing technologies makes ecosystem research easier and more accurate than ever before. In this thesis, MODIS was used in the main study of Turkey as a whole, and LiDAR was used in further studies in some parts of the Black Sea. It is inevitable that biodiversity is decreasing worldwide. Various natural and physical influences are changing the living place. This study was geared towards birds living in Turkey. Bird populations and species are also decreasing in Turkey due to environmental and climate changes. (boyla et al, 2019). This study identified the relationship between bird species richness and vegetation, which is considered a major habitat for birds. Several studies have already shown that they are positively correlated.(Liang et al, 2018; Seto et al, 2004) There is a need to identify Turkey as a case. I wanted to see if the relationship could be confirmed with the vegetation index, a single parameter. Analysis of the relationship between all bird species and vegetation observed in Turkey, including species that do not have vegetation as their habitat. Remote sensing data was used to obtain vegetation information. The study used NDVI and EVI via MODIS Terra. First, I mapped three years of changes in NDVI and EVI from 2015 to 2017 throughout Turkey. All of them decreased every year. The trend were similar, but EVI was generally lower than NDVI, as usual. The map shows that the vegetation of the central inland regions of Turkey is further reduced. To check the relationship with the obtained vegetation index, bird species data was extracted from Turkish Breeding bird atlas data during the same 2015-2017 period was identified. Both NDVI and EVI showed a positive correlation with the bird species data. Especially, the maximum value of NDVI correlated strongly with Bir Species Richness. And, the mean values were most correlated in EVI. It is believed that EVI is sensitive to the terrain. (Matsushita et al, 2007) In addition, the correlation with 2017 was highist. Even 2015 EVI was analyzed to be independent of bird species richness. It was found that the Species richness at the same time has changed with the decrease of vegetation. The results of this study provide an overall review of the positive correlation between bird species richness and vegetation in Turkey. Furthermore, the usefulness of NDVI and EVI was confirmed again. After the main research as above, to understand the forest area in some areas a more detailed study was attempted. Further research on forest structure and bird diversity in local areas has been conducted. I used light detection and ranging (LiDAR) to collect more accurate high-resolution data for forest structure analysis. The two forests of each 0.4 km wide and 10 km long are selected from the forests with high bird species richness and relatively low bird species richness and their structural analysis using the LiDAR poind cloud data and the CHMs classification which one of forest metrics greatest influence on birds habitat. In addition, I used forest management plans data to analyze the differences in specific tree types and growth levels in each region. Under the assumption that species observed in the Atlas square (50km x 50km), can live in or stay in all the forests in that square. The results were that CHM was similar in overall trend, but the region with high species richness of bird had a higher proportion of '10 -20m ' than the low species richness region. Through the DEM, I could find many ridgelines, including steep slopes in the region with high specie richness. In addition, The region of high specie richness of bird had more varieties of trees than low specie richness region. DBH proportion was '8-19.9cm' of non-thick trees was high. At the top crown closure level, it was confirmed that both areas were dense forests with a high degree of closure. It results show the effectiveness of LiDAR in assessing forest health and productivity, and assessing habitat quality. Continued research into forests and habitats using various techniques such as LiDAR can lead to the creation of appropriate wildlife habitat models to build ecological forest management. Comprehensive correlation analyzes between habitat and other factors, climate change and forest structure etc, are required. Climate and physical changes at the time of the change in vegetation should also be identified. In order to maintain biodiversity, further research should be conducted to identify what changes are being made to the ecosystem and why these changes have occurred.Ekosistemleri geniş ve erişilmesi güçtür. Bu yüzden, biyoçeşitliliği ölçmek zordur. Ancak gelişen çeşitli uzaktan algılama sitemleri teknolojileri ile ekosistem araştırmaları hiç olmadığı kadar kolay ve doğru hale gelmiştir. Bu tezinin ana çalışmasında MODIS kullanılmıştır. Ek olarak Karadeniz'in bazı bölgelerinin detaylı bir çalışmasında LiDAR kullanılmıştır. Biyoçeşitlilğin dünya çapında azalması kaçınılmaz. Çeşitli doğal ve fiziksel etkiler yaşam alanlarını değiştirmekte. Bu çalışma Türkiye'de yaşayan kuşlara yöneliktir.Türkiye'de kuş nüfusu ve türleri de çevresel ve iklim değişikliklerinden dolayı azalmaktadır. (boyla et al, 2019). Bu çalışma kuş türleri için başlıca habitat olarak kabul edilen bitki örtüsü ve kuş türü zenginliği arasındaki ilişkiyi tanımlamıştır.Bir çok çalışma aralarındaki pozitif korelasyonu ortaya çıkarmıştır. .(Liang et al, 2018; Seto et al, 2004) Ancak Türkiye'ye ayrı bir tanımlama gerekmektedir. Habitatında bitki örtüsü olmayan kuşlar dahil olmak üzere Türkiye'deki tüm tür sayıları tek bir parametre olan bitki örtüsü indeksi ile ilişkilendirip ilişkilendirilemeyeceğini görmek istedim. Bitki örtüsü bilgisini elde etmek için uzaktan algılama verileri kullanılmıştır. Çalışmada MODIS Terra aracılığı ile NDVI ve EVI kullanılmıştır.Öncelikle 2015'ten 2017'ye Türkiye genelinde NDVI ve EVI deki değişiklikleri haritaladım. Hepsi her yıl düşüş gösterdi. Eğilim benzerdi ancak, EVI genellikle her zamanki gibi NDVI'dan düşüktü. Harita Türkiye'nin iç bölgelerinin bitki örtüsünün azaldığını göstermektedir. 2015-2017 yıllarında yapılan Türkiye Kuş yetiştirme atlas verilerinde kuş türleri arasındaki ilişki tespit edilmiştir. Hem NDVI hem de EVI kuş türleri verileri pozitif bir korelasyon göstermiştir.Özellikle NDVI'ın maksimum değeri kuş türü zenginliği ile büyük bir ilişki göstermiştir ve ortalama değerler en çok EVI ile ilişki göstermiştir. EVI'nin araziye duyarlı oluduğuna inanılır. (Matsushita et al, 2007) Ek olarak, 2017 ile en çok ilişki göstermektedir. 2015 EVI bile kuş türü zenginliğinden bağımsız olarak analiz edildi. Bu sayade, tür zenginliğinin bitki örtüsünün azamasıyla değiştiğini tespit ettik. Bu çalışmanın sonuçları Türkiye'deki kuş türü zenginliği ile bitki örtüsü arasındaki pozitif ilişkinin genel bir incelemesini sunmaktadır.Dahası, NDVI ve EVI'nin kullanılışlığı tekrar doğrulandı. Yukarıdaki ana araştırmadan sonra, bazı ormanlık alanları anlamak için daha ayrıntılı çalışmalar denendi. Karadeniz alanlarda orman yapısı ve kuş çeşitliliği hakkında daha fazla araştırma yapılmıştır. Buna örnek olarak orman yapısını doğru yüksek çözünürlüklü verilerle analiz etmek için "Light Detection and Ranging(LiDAR)" kullanıldı. Türkiye'de Üreyen Kuş Atlası kullanılarak kuşların bol olduğu ve nispeten düşük olduğu alanlar seçildi. 0.4 km ve 10 km uzunluğunda LiDAR nokta bulutu verilerini kullanılarak Vejetasyon Sınıflaması ve Yükseklik Modeli (DEM), Sayısal Yüzey Modeli (DSM) ve Canopy Yüksekliği Modeli (CHM) analiz edildi. Çalışma alanlarındaki ağaç türleri ve ağaç büyüme düzeyindeki farklılıkları kontrol etmek için amenajman planı ve meşcere haritası verileri kullanılmıştır. Sonuç olarak, genel CHMs eğilimleri benzer fakat tür habitatı zengin alanlar, düşük alanlardan '10 -20m' daha yüksekti. Ek olarak, DEM ile yapılan ölçümlerde kuş türü zengin alanda dik yamaçlar ve eğimler de bulunmaktaydı. Kuş türlerinin zengin olduğu alanda daha fazla ağaç türü vardı. Bu, orman türlerinin biyoçeşitliliği yüksek olduğunu göstermektedir. Gelişme çağları ise, kuş türlerinin zengin olduğu alanda çapları '8-19.9 cm' aralığında olan ağaçların oranı yüksekti. Tepe kapalılığı her iki alan da yüksek derecede tam kapalılığa sahip ormanlardı. Sonuçlarımız LiDAR'ın orman sağlığını, verimliliğini ve habitat kalitesini değerlendirme etkinliğini göstermektedir. LiDAR gibi çeşitli teknolojiler kullanılarak ormanlar ve habitatlar üzerine yapılan araştırmalar, uygun habitat modelleri oluşturularak ekolojik orman yönetimi oluşturulmasına yardımcı olacaktır. Habitat ve diğer föktörler, iklim değişikliği, ormanların yapısı vb. arasında kapsamlı ilişki analizleri gerekmektedir.Birki örtüsündeki değişim sırasındaki iklim ve fiziksel değişiklikler de tanımlanmalıdır.M.Sc.Yüksek Lisan
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