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
Survival of weed seeds subjected to sheep rumen digestion
No full textAn experiment was conducted to examine the effect of sheep rumen digestion on the viability of the seeds of eight weed and two crop species common in Lebanon. Seed samples were put in small monofilament polyester bags and placed in the rumen of fistulated sheep for 1, 2, 3 and 4 days. The viability of the seeds 4 days after placement in the rumen was 85percent for Cuscuta campestris, 76percent for Amaranthus retroflexus, 31percent for Convolvulus arvensis, 17percent for Chenopodium album, 10percent for Eleusine indica, and 1.3percent for Setaria viridis, compared with the control. Seeds of Lolium multiflorum and Raphanus raphanistrum died 2 days after placement in the rumen, while seeds of Lens culinaris and Hordeum vulgare, which were tested for comparison, died 1 day after placement in the rumen. The seeds most tolerant to incubation were Cuscuta campestris and Amaranthus retroflexus, followed by Convolvulus arvensis, Chenopodium album and Eleusine indica. The results indicate that sheep could be an important vector for dispersing viable weed seeds, particularly hard-coated seeds. Thus, sheep should be kept in pens for about 4 days before being released into new fields, to reduce the risk of weed infestation and spread. © 2010 The Authors. Weed Research © 2010 European Weed Research Society.BALLARD L. A. T., 1958, AUSTRALIAN JOUR BIOL SCI, V11, P246; BUHLER DD, 1999, ANDERSENS GUIDE PRAC, P248; Curtis K. M. S., 1990, Proceedings of the Australian Society of Animal Production, V18, P180; DASTGHEIB F, 1989, WEED RES, V29, P113, DOI 10.1111-j.1365-3180.1989.tb00848.x; EDGECOMBE W S, 1970, P457; ESTELL RE, 1986, J ANIM SCI, V60, P1061; GARDENER CJ, 1993, J APPL ECOL, V30, P63, DOI 10.2307-2404271; HAIDAR MA, 1995, ARAB NEAR E PLANT PR, P34; Haidar MA, 1997, WEED RES, V37, P219, DOI 10.1046-j.1365-3180.1997.d01-36.x; HEADY HAROLD F., 1954, JOUR RANGE MANAGEMENT, V7, P259, DOI 10.2307-3893928; HENDRICKS SB, 1976, PLANT PHYSIOL, V58, P7, DOI 10.1104-pp.58.1.7; Kneuper CL, 2003, J RANGE MANAGE, V56, P255, DOI 10.2307-4003815; LACY JR, 1992, WEED TECHNOL, V6, P599; Landau S, 2006, LIVEST SCI, V105, P265, DOI 10.1016-j.livsci.2006.05.024; Manzano P, 2005, SEED SCI RES, V15, P21, DOI 10.1079-SSR2004192; Michael PJ, 2006, AUST J EXP AGR, V46, P1251, DOI 10.1071-EA05285; Olson BE, 2002, J RANGE MANAGE, V55, P65, DOI 10.2307-4003264; Olson BE, 1997, J RANGE MANAGE, V50, P10, DOI 10.2307-4002698; PIGGIN CM, 1978, WEED RES, V18, P155, DOI 10.1111-j.1365-3180.1978.tb01152.x; Schoenbaum I, 2009, CROP PASTURE SCI, V60, P675, DOI 10.1071-CP08283; SIMAO NM, 1987, AUSTR J EXPT AGR, V27, P247, DOI 10.1071-EA9870247; Stanton R, 2003, AUST J EXP AGR, V43, P535, DOI 10.1071-EA02046; Stanton R, 2002, AUST J EXP AGR, V42, P111, DOI 10.1071-EA01069; WALLANDER RT, 1995, J RANGE MANAGE, V48, P145, DOI 10.2307-400280223
Identification and antibacterial resistance of bacteria isolated from poultry
No full textFood-borne infections are among the prominent health hazards. Antibacterial agents (ABA) are usually administered to poultry in Lebanon as antibiotic growth promoters (AGP), which might lead to the dissemination of resistant bacterial strains. The aims of this study were to isolate potential food borne pathogens from poultry and investigate an association between AGP usage and antibacterial resistance (ABR). Isolates were obtained from the culture of cloacae swabs and identified. Escherichia coli was the predominant isolate. There was a significant association between the use of tetracycline and gentamicin as AGP and the number of E. coli isolates resistant to these ABA.Aarestrup FM, 2001, ANTIMICROB AGENTS CH, V45, P2054, DOI 10.1128-AAC.45.7.2054-2059.2001; Angulo Frederick J, 2004, Semin Pediatr Infect Dis, V15, P78, DOI 10.1053-j.spid.2004.01.010; [Anonymous], 2005, IMP CURR FOOD SAF SY; [Anonymous], 1969, SWANN REP; Boerlin Patrick, 2008, Animal Health Research Reviews, V9, P115, DOI 10.1017-S146625230800159X; Bywater RJ, 2000, J ANTIMICROB CHEMOTH, V46, P1052; Bywater RJ, 2000, J ANTIMICROB CHEMOTH, V46, P643, DOI 10.1093-jac-46.4.643; Clinical and Laboratory Standards Institute, 2006, M100S16 CLSI; Connors N, 1997, J IND MICROBIOL BIOT, V18, P353, DOI 10.1038-sj.jim.2900402; Gyles Carlton L., 2008, Animal Health Research Reviews, V9, P149, DOI 10.1017-S1466252308001552; Harajly M, 2010, ANN CLIN MICROB ANTI, V9, DOI 10.1186-1476-0711-9-19; HUOVINEN P, 1995, ANTIMICROB AGENTS CH, V39, P279; Hutchon D.J.R., 1999, CALCULATOR CONFIDENC; Johnson JR, 2007, EMERG INFECT DIS, V13, P838; Johnson R., 2010, 75700 C RES SERV; LESTER SC, 1990, NEW ENGL J MED, V323, P285, DOI 10.1056-NEJM199008023230501; Ministry of Agriculture, REP AGR LEB 2006 200; Moniri Rezvan, 2005, Microbial Ecology in Health and Disease, V17, P69, DOI 10.1080-08910600510038009; NARMS, 2008, RET MEAT COMPL ANN R; Phillips I, 2004, J ANTIMICROB CHEMOTH, V53, P28, DOI 10.1093-jac-dkg483; Shea KM, 2003, PEDIATRICS, V112, P253; van Beilen JB, 2007, APPL MICROBIOL BIOT, V74, P13, DOI 10.1007-s00253-006-0748-0; van den Bogaard AE, 2000, J ANTIMICROB CHEMOTH, V46, P146, DOI 10.1093-jac-46.1.146; Warren RE, 2008, J ANTIMICROB CHEMOTH, V61, P504, DOI 10.1093-jac-dkm517; [World Health Organization WHO Consultation], 1997, WHO PUBL, VWHO-NUT-NCD-98.110
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
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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