1,720,957 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
The impact of different nutrition of seabass juveniles Dicentrarchus Labrax (Linnaeus, 1758) on the growth and quality of the fillet
No full textGlavni izvori hrane za akvakulturu su riblje brašno i ulje što nije dugoročno održivo te se danas intezivno istražuje mogućnost uvođenja alternativnih izvora poput biljaka i kukaca. U ovom istraživanju testirano je pet pokusnih ishrana mlađi lubina Dicentrarchus labrax s različitim udjelom i podrijetlom biljnih/animalnih obroka, uz komercijalnu hranu. Dvije su predstavljale negativnu (CVEG), odnosno pozitivnu kontrolu (CFISH) te su sadržavale visoki udio biljnih, odnosno ribljih proteina i ulja. Ostale hrane su sadržavale glavninu biljnih proteina s dodatkom proteina kukca Hermetia illucens (CVEG+HM), kombinaciju biljnih proteina, nusproizvoda iz industrije peradi i kukca (CVEG+PBM+HM) i visoki udio ribljeg proteina i ulja s dodatkom kukca (CFISH+HM). Na kraju pokusnog razdoblja od 125 dana, skupina hranjena komercijalnom hranom imala je najveći rast u dužinu (49,11%) i u masu (85,95%), dok je najmanje povećanje dužine (42,2%) i mase (80,41%) zabilježeno u skupini CVEG. Skupina CFISH je imala sličan rast kontrolnoj skupini. Najviša vrijednost indeksa kondicije je zabilježena za CFISH+HM (1,28 ± 0,01). Skupina CFISH je imala najbolji indeks konverzije hrane (0,97 ± 0,02), najnižu energetsku vrijednost fecesa (234,54 ± 7,12 kcal), odnosno najveću iskoristivost hrane, te najveći sadržaj ukupnih lipida u filetima. Kod ishrane s većim sadržajem omega-3 i -6 masnih kiselina podrijetlom iz kukca, odnosno ulja repice i lana (CFISH+HM, odnosno CVEG), zabilježen je i veći sadržaj istih u filetima mlađi lubina. Rezultati ukazuju na važnost ribljih obroka u ishrani mlađi lubina i u ovoj fazi razvoja alternativni izvori proteina i ulja se nisu pokazali jednako učinkovitima.Given that the main sources of food for aquaculture are fishmeal and oil, which is not sustainable in the long run, the nutritional potential of alternative sources such as plants and insects is being intensively explored. In this study, five experimental diets of juvenile sea bass Dicentrarchus labrax were tested with different proportions and origins of plant/animal meals, in addition to the commercial diet. Two were negative (CVEG) and positive control (CFISH) and contained a high proportion of vegetable and fish proteins and oils, respectively. Other diets contained the majority of plant proteins with the addition of insect protein from Hermetia illucens (CVEG+HM), a combination of plant proteins, by-products from the poultry industry and insect meal (CVEG+PBM+HM) and a diet with high proportion of fish protein and oil and insect meal (CFISH+HM). After 125 days of the feeding trial, the group fed commercial diet demonstrated largest increase in length (49.11%) and weight (85.95%), while the smallest increase in length (42.2%) and weight (80.41 %) was recorded for the CVEG group. The CFISH group had similar growth to the control group. The highest value of the condition index was recorded for CFISH+HM (1.28 ± 0.01). The CFISH group had the best food conversion index (0.97 ± 0.02), lowest fecal energy value (234.54 ± 7.12 kcal), i.e. the highest food utilization rate, and the highest total lipid content in fillets. Experimental groups fed diets with a higher content of omega-3 and -6 fatty acids originating from insect meal or rapeseed and flaxseed oil respectively (CFISH+HM and CVEG) demonstrated a higher content of these acids in sea bass fillets. The results underline the importance of fish meals in the diet of juvenile sea bass and alternative sources of dietary protein and oil cannot meet the demands of fish at this developmental stage
Biological features of John Dory (Zeus faber) as a cosmopolitan fish species
No full textU radu su opisane najvažnije biološke značajke kovača, kao kozmopolitske vrste riba, na temelju dosadašnjih istraživanja. Kovač je gospodarski značajna vrsta, no njegove biološke osobitosti onemogućuju mu brzu obnovu populacija. Dužina prve spolne zrelosti nalazi se u rasponu od 25 – 35 cm što predstavlja najveći problem u stvaranju novih generacija. Ova veličina predstavlja prekretnicu u promjeni prehrane, s manje ribe i rakova na gotovo potpunu prehranu većom ribom. U većini istraživanja uočena je brojčana dominacija ženki, 1,6:1 što je pozitivna činjenica koja bi s adekvatnim mjerama mogla pomoći obnavljanju populacija ove vrste.On the basis of the recent research this paper presents the most important features of John Dory, as one of the cosmopolitan fish species. John Dory is from a commercial point of view an important species, but its biological features don’t allow fast growth of its population. As each fish needs to reach a length of 25 – 35 centimetres before it can engage in its first reproductive cycle, the production of new generations is therefore slow. This size represents a turning point in nutrition change, with less fish and crustaceans to almost complete nutrition with larger fish. It’s interesting to note that majority of research records a greater number of females than males, with a 1.6:1 ratio. This is a positive fact which could, through adequate measures, help restore the population of this species
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
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