Academic literature on the topic 'Analyse de citations'
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Journal articles on the topic "Analyse de citations"
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Shah, Tariq Ahmad, Sumeer Gul, and Ramesh C. Gaur. "Authors self-citation behaviour in the field of Library and Information Science." Aslib Journal of Information Management 67, no. 4 (July 20, 2015): 458–68. http://dx.doi.org/10.1108/ajim-10-2014-0134.
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Purpose – The purpose of this paper is to analyse the author self-citation behavior in the field of Library and Information Science. Various factors governing the author self-citation behavior have also been studied. Design/methodology/approach – The 2012 edition of Social Science Citation Index was consulted for the selection of LIS journals. Under the subject heading “Information Science and Library Science” there were 84 journals and out of these 12 journals were selected for the study based on systematic sampling. The study was confined to original research and review articles that were published in select journals in the year 2009. The main reason to choose 2009 was to get at least five years (2009-2013) citation data from Web of Science Core Collection (excluding Book Citation Index) and SciELO Citation Index. A citation was treated as self-citation whenever one of the authors of citing and cited paper was common, i.e., the set of co-authors of the citing paper and that of the cited one are not disjoint. To minimize the risk of homonyms, spelling variances and misspelling in authors’ names, the authors compared full author names in citing and cited articles. Findings – A positive correlation between number of authors and total number of citations exists with no correlation between number of authors and number/share of self-citations, i.e., self-citations are not affected by the number of co-authors in a paper. Articles which are produced in collaboration attract more self-citations than articles produced by only one author. There is no statistically significant variation in citations counts (total and self-citations) in works that are result of different types of collaboration. A strong and statistically significant positive correlation exists between total citation count and frequency of self-citations. No relation could be ascertained between total citation count and proportion of self-citations. Authors tend to cite more of their recent works than the work of other authors. Total citation count and number of self-citations are positively correlated with the impact factor of source publication and correlation coefficient for total citations is much higher than that for self-citations. A negative correlation exhibits between impact factor and the share of self-citations. Of particular note is that the correlation in all the cases is of weak nature. Research limitations/implications – The research provides an understanding of the author self-citations in the field of LIS. readers are encouraged to further the study by taking into account large sample, tracing citations also from Book Citation Index (WoS) and comparing results with other allied subjects so as to validate the robustness of the findings of this study. Originality/value – Readers are encouraged to further the study by taking into account large sample, tracing citations also from Book Citation Index (WoS) and comparing results with other allied subjects so as to validate the robustness of the findings of this study.
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Edelmayer, L. W., J. E. Fenton, S. A. Yellin, D. J. Shearer, and D. H. Coelho. "Case report classics in otolaryngology – head and neck surgery: citation analysis." Journal of Laryngology & Otology 132, no. 7 (June 12, 2018): 651–56. http://dx.doi.org/10.1017/s0022215118000385.
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AbstractObjectivesTo analyse publication and citations trends of case reports within otolaryngology – head and neck surgery literature, with specific attention to the most-cited reports.Study designDatabase query.MethodsWeb of Science was searched for article type ‘case reports’ published in the leading otolaryngology – head and neck surgery journals since 1945. Variables including publication dates, citation dates and numbers, author, author number, and others were recorded and analysed for trends. The reports with the most citations (classics) were further studied.ResultsOf nearly 67 000 published articles in leading otolaryngology – head and neck surgery journals, the overall number of case reports as a percentage of the total has substantially decreased over time. A total of 110 case report classics were identified for which citations have increased.ConclusionAlthough the case report may not be worthy of its tarnished record, declining trends in publication suggest a limited future for this valuable research and educational resource.
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Chang, Chia-Lin, and Michael McAleer. "Quality weighted citations versus total citations in the sciences and social sciences, with an application to finance and accounting." Managerial Finance 42, no. 4 (April 11, 2016): 324–37. http://dx.doi.org/10.1108/mf-12-2014-0315.
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Purpose – Both journal self-citations and exchanged citations have the effect of increasing a journal’s impact factor, which may be deceptive. The purpose of this paper is to analyse academic journal quality and research impact using quality-weighted citations vs total citations, based on the widely used Thomson Reuters ISI Web of Science citations database (ISI). A new Index of Citations Quality (ICQ) is presented, based on quality-weighted citations. Design/methodology/approach – The new index is used to analyse the leading 500 journals in both the sciences and social sciences, as well as finance and accounting, using quantifiable Research Assessment Measures (RAMs) that are based on alternative transformations of citations. Findings – It is shown that ICQ is a useful additional measure to 2-year impact factor (2YIF) and other well-known RAMs for the purpose of evaluating the impact and quality, as well as ranking, of journals as it contains information that has very low correlations with the information contained in the well-known RAMs for both the sciences and social sciences, and finance and accounting. Practical implications – Journals can, and do, inflate the number of citations through self-citation practices, which may be coercive. Another method for distorting journal impact is through a set of journals agreeing to cite each other, that is, by exchanging citations. This may be less coercive than self-citations, but is nonetheless unprofessional and distortionary. Social implications – The premise underlying the use of citations data is that higher quality journals generally have a higher number of citations. The impact of citations can be distorted in a number of ways, both consciously and unconsciously. Originality/value – Regardless of whether self-citations arise through collusive practices, the increase in citations will affect both 2YIF and 5-year impact factor (5YIF), though not Eigenfactor and Article Influence. This leads to an ICQ, where a higher ICQ would generally be preferred to lower. Unlike 5YIF, which is increased by journal self-citations and exchanged citations, and Eigenfactor and Article Influence, both of which are affected by quality-weighted exchanged citations, ICQ will be less affected by exchanged citations. In the absence of any empirical evidence to the contrary, 5YIF and AI are assumed to be affected similarly by exchanged citations.
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Li, Weidong, and Olli-Pekka Hilmola. "One Belt And One Road: Literature Analysis." Transport and Telecommunication Journal 20, no. 3 (June 1, 2019): 260–68. http://dx.doi.org/10.2478/ttj-2019-0022.
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Abstract In the late 2013 One Belt and One Road (OBOR) was announced in Chinese international political speeches. Thereafter, this significant investment program started and research works were also initiated. We found that first journal publications (in English) appeared in 2016, and thereafter their amounts have increased, especially in 2018. Most of the contributing authors are China based or Chinese scholars living in abroad. Highest citations amounts are for the works published in the first analysis year, however, some differences exist between Scopus and Web of Science citation service amounts. Ten highest cited works account most of the citations on analysed 66 articles. Literature analysis uses tag cloud and network analysis to identify and analyse what are the most used references of these OBOR works. There does not exist any clear key reference among articles, but most used references form a network among analysed research work citations. This further verifies that OBOR program is significantly sized in topics covered, and it is still difficult to define its central or key area.
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Casino, Gonzalo, Roser Rius, and Erik Cobo. "National citation patterns ofNEJM,The Lancet,JAMAandThe BMJin the lay press: a quantitative content analysis." BMJ Open 7, no. 11 (November 2017): e018705. http://dx.doi.org/10.1136/bmjopen-2017-018705.
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ObjectivesTo analyse the total number of newspaper articles citing the four leading general medical journals and to describe national citation patterns.DesignQuantitative content analysis.Setting/sampleFull text of 22 general newspapers in 14 countries over the period 2008–2015, collected from LexisNexis. The 14 countries have been categorised into four regions: the USA, the UK, Western World (European countries other than the UK, and Australia, New Zealand and Canada) and Rest of the World (other countries).Main outcome measurePress citations of four medical journals (two American:NEJMandJAMA; and two British:The LancetandThe BMJ) in 22 newspapers.ResultsBritish and American newspapers cited some of the four analysed medical journals about three times a week in 2008–2015 (weekly mean 3.2 and 2.7 citations, respectively); the newspapers from other Western countries did so about once a week (weekly mean 1.1), and those from the Rest of the World cited them about once a month (monthly mean 1.1). The New York Times cited above all other newspapers (weekly mean 4.7). The analysis showed the existence of three national citation patterns in the daily press: American newspapers cited mostly American journals (70.0% of citations), British newspapers cited mostly British journals (86.5%) and the rest of the analysed press cited more British journals than American ones.The Lancetwas the most cited journal in the press of almost all Western countries outside the USA and the UK. Multivariate correspondence analysis confirmed the national patterns and showed that over 85% of the citation data variability is retained in just one single new variable: the national dimension.ConclusionBritish and American newspapers are the ones that cite the four analysed medical journals more often, showing a domestic preference for their respective national journals; non-British and non-American newspapers show a common international citation pattern.
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Torres-Salinas, Daniel, Nicolas Robinson-Garcia, Juan Miguel Campanario, and Emilio Delgado López-Cózar. "Coverage, field specialisation and the impact of scientific publishers indexed in the Book Citation Index." Online Information Review 38, no. 1 (January 8, 2014): 24–42. http://dx.doi.org/10.1108/oir-10-2012-0169.
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Purpose – The aim of this study is to analyse the disciplinary coverage of Thomson Reuters' Book Citation Index database focusing on publisher presence, impact and specialisation. Design/methodology/approach – The authors conducted a descriptive study in which they examined coverage by discipline, publisher distribution by field and country of publication, and publisher impact. For this purpose the Thomson Reuters' subject categories were aggregated into 15 disciplines. Findings – Humanities and social sciences comprise 30 per cent of the total share of this database. Most of the disciplines are covered by very few publishers mainly from the UK and USA (75.05 per cent of the books), in fact 33 publishers hold 90 per cent of the whole share. Regarding publisher impact, 80.5 per cent of the books and chapters remained uncited. Two serious errors were found in this database: the Book Citation Index does not retrieve all citations for books and chapters; and book citations do not include citations to their chapters. Originality/value – There are currently no studies analysing in depth the coverage of this novel database which covers monographs.
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Abedini, Ahmad, Rizal Rahman, Hassan Sadeghi Naeini, and Nader Ale Ebrahim. "The100 most cited papers in industrial design: a bibliometric analysis." Exacta 15, no. 3 (September 29, 2017): 515–26. http://dx.doi.org/10.5585/exactaep.v15n3.7659.
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This paper highlights the underlying factors that define the success of industrial design literature, which can be measured through citation characteristics. In this regard, the study aims to identify and analyse the characteristics of top-cited papers published in the Web of Science under the topic of industrial design from 1980 to 2014. The results showed that the top five papers received 896 citations, which were published between 2002 to 2006, and obtained 278 )31.02%) citations. The top five keywords were extracted from the abstracts of top-cited papers. In addition, the names of the top journals were Design Studies, International Journal of Industrial Ergonomics, and International Journal of Design. Industrial design is proposed as a new Web of Science category.
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Massaro, Maurizio, John Dumay, and Carlo Bagnoli. "Transparency and the rhetorical use of citations to Robert Yin in case study research." Meditari Accountancy Research 27, no. 1 (February 11, 2019): 44–71. http://dx.doi.org/10.1108/medar-08-2017-0202.
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PurposeThis paper aims to analyse “how”, “why” and “where” authors use citations of Robert Yin’s classic text, Case Study Research: Design and Methods, to determine the application of methodological transparency in published case study research.Design/methodology/approachThe analysis is conducted using a structured literature review methodology.FindingsThe results reveal problems of obliteration by incorporation, miscitations, appeals to ethos, rhetorical convenience and a shadow effect, also known as adumbration. The authors argue that case study research relying, either in full or in part, on Yin’s methodology should transparently describe how and which parts of the methodology have been applied. Thus, the conclusions signal some opportunities for improving transparency in the use of citations in case study research.Research limitations/implicationsThe analysis highlights behaviours that may lead researchers to questionable findings due to a lack of methodological transparency in developing case study research, along with some recommendations for avoiding such problems. Improving transparency is useful for readers to understand what was done, for reviewers and editors to evaluate the research, and to guide other researchers who wish to conduct case study research.Originality/valueThis research compares citation practices in case study research in accounting and management with a focus on citations of Robert Yin. The results build on previous studies that analyse how scholars apply case study methodology that encourages researchers to adopt greater transparency.
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Studenic, P., and C. Ospelt. "OP0339 ALTMETRIC - DOES SOCIAL MEDIA IMPACT CITATION RATE IN RHEUMATOLOGY JOURNALS?" Annals of the Rheumatic Diseases 79, Suppl 1 (June 2020): 208. http://dx.doi.org/10.1136/annrheumdis-2020-eular.5913.
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Background:The coloured altmetrics donut has become a standard feature of online publications. The colours depict different online sources by which an article was mentioned, while the number in the donut, the Altmetric Score (AS), reflects the summarised attention an article has received. The Dimensions database joins citations from any kind of scientific or mainstream publication. Studies analysing the link between the AS and the citation rate of an article suggest that this connection is strongly dependent on the field of research, the type of article and the type of analysis used.Objectives:To analyse the connection between AS and citation rate in articles published in rheumatology journals.Methods:We retrieved data on article usage, AS and citations of articles published in ARD and RMD Open between January 2015 and November 2019. For time-dependent analyses on the influence of AS on citations, articles published in 2019 were excluded. Forward-stepwise regression models were used to explore factors influencing total citation rates. We performed subanalyses, dividing articles in categories of correspondence, original research and editorials/viewpoints. We dichotomised articles by reaching the top 25% in terms of citation count within the first, second, third and fourth year after publication according their category. We explored the risk of reaching these top 25% in dependency of AS using logistic regression (log transformed AS) and receiver operating curve analyses (ROC, reported cut-offs were identified coinciding with 80% specificity).Results:We used 1597 articles published in ARD and 409 articles of RMD Open with complete data on AS and article usage within the mentioned timeframe. AS are higher in more recently published articles (p=0.04, ß: 1.3 per year), but the number of Dimensions citations is lower in more recently published articles (ß: -8.5 per year, p≤0.001). Twitter shows by far the highest activity among the AS subcategories (highly correlating with AS r=0.8, p≤0.001). The total number of twitter mentions increased by 2.8/year from 2015 to 2019, indicating that more recently published articles were more often picked up on twitter. Changes in R2in the regression model indicated that besides time since publication and AS, also the type of article influences citation count. For original research and editorials, AS may significantly add to the variability of the citation count, which was not the case for correspondences. The influence of AS on citation count of editorials added 16% to the 12% variability explained by publication time. Both factors showed similar ß-coefficients (months: ß: 0.76; ß: AS: 0.83). This effect was smaller in original articles (month: ß=0.74; AS: ß=0.11, Total R2: 23.7%). AS significantly coincides with reaching the top 25% of citation counts according to time since publication. For the first year those articles with AS >15 showed a positive Likelihood Ratio (+LR; 95%CI) of 1.6 (1.4-1.9) to reach the top 25%, the second year AS>15: +LR: 1.9 (1.6-2.2), the third year AS>13: +LR 2.3 (1.9-2.7) and in the fourth year AS>12 +LR: 2.1 (1.7-2.7). This effect was again different between publication categories, with no effect of AS in correspondence articles. Figure 1 highlights that AS influences citations of editorials to a larger extent than of original articles, except within the first year of publication.Conclusion:We could show, that Altmetric scores are higher in more recent publications and seem to have an influence on the number of citations, particularly early citations in the first two years after publication. The early implementation of published articles in social media could help to increase overall citation.Acknowledgments:We thank Lindsey Fountain from BMJ for providing citation and usage data.Disclosure of Interests:Paul Studenic Grant/research support from: Abbvie, Caroline Ospelt Consultant of: Consultancy fees from Gilead Sciences.
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Fernandes, Cristina, João Ferreira, and Marta Peris-Ortiz. "Open innovation: past, present and future trends." Journal of Organizational Change Management 32, no. 5 (August 12, 2019): 578–602. http://dx.doi.org/10.1108/jocm-09-2018-0257.
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Purpose The purpose of this paper is to provide interested parties with the means of grasping how the literature on open innovation has evolved over the course of time. In this way, the authors furthermore contribute towards a better understanding, scaling and positioning of this field of research. Design/methodology/approach This study applies a combination of bibliometric techniques, such as citations, co-citations and social network analysis in order to map the scientific domain of open innovation. Currently, bibliometric analysis represents a methodology in effect on a global scale to evaluate the existing state of fields of research (Mutschke et al., 2011). This spans the application of quantitative and statistical analysis to publications such as articles and their respective citations and serving to evaluate the performance of research through returning data on all of the activities ongoing in a scientific field with summaries of these data generating a broad perspective on the research activities and impacts, especially as regards the researchers, journals, countries and universities (Hawkins, 1977; Osareh, 1996; Thomsom Reuters, 2008). Findings This research aims to map and analyse the intellectual knowledge held on open innovation. To this end, the authors carried out a bibliometric study with recourse to co-citations. Based on cluster and factorial analyses, it is possible identify and classify the several theoretical perspectives on open innovation across six areas: open innovation concept, open innovation and networks, open innovation and knowledge, open Innovation, and innovation spillovers, open innovation management and open innovation and technology. Originality/value This paper aims to map and analyse the intellectual knowledge held on open innovation.
Dissertations / Theses on the topic "Analyse de citations"
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Luisier, Philippe. "Citations vétéro-testamentaires dans les versions coptes des évangiles : recueil et analyse critique /." Genève : Cramer, 1998. http://catalogue.bnf.fr/ark:/12148/cb39929384f.
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Delaplace, Joseph. "Le présent du passé : citations et répétitions dynamiques dans l'oeuvre de Györgi Ligeti." Paris 8, 2005. http://www.theses.fr/2005PA082560.
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Cette recherche s'appuie sur l'analyse des procédés répétitifs – incluant la citation en tant que référence caractérisée au passé – qui se déploient dans un ensemble d'œuvres de György Ligeti. L'examen détaillé de certains processus de composition aboutit à une réflexion sur l'écriture musicale contemporaine qui, à travers le prisme ligetien, jette un regard interprétatif sur une production bien plus large. Ce sont notamment les rapports entre des catégories comme la tradition, la modernité et la postmodernité qui permettent d'apporter des éclaircissements au sein du débat esthétique actuel. Les interprétations proposées s'appuient sur des pensées comme celle d'Adorno, de Benjamin ou de Lacan. Dans un premier temps, une étude précise des techniques ligetiennes permet de montrer de quelle manière le compositeur dépasse un " niveau neutre " de la répétition et intègre à celle-ci la dimension de l'héritage. Les rapports à la tradition sont ensuite explorés plus précisément avec l'exemple du concerto, l'un des genres musicaux favoris de Ligeti. La question de la citation est traitée à travers l'analyse du Grand Macabre, une œuvre dans laquelle l'étroite imbrication entre techniques répétitives et tissu citationnel pose le problème du sens et des relations à l'histoire. L'écriture de Ligeti est également confrontée à celle de Mahler et Beethoven dans le quatrième chapitre, avant d'être interrogée en regard des affects particuliers qui se logent dans certaines œuvres de théâtre musical, et qui se trouvent diffractés jusque dans la production récente du compositeurThis search lean on the analysis of repetitive processes – including quotation as a privileged reference to the past – in the works of György Ligeti. The detailled investigation of compositionnal processes result in a reflexion on the contemporary writing who, at the ligetian prism, allow to interpret a larger musical production. The connections between tradition, modernity and postmodernity inform the actual discussion about esthetic. Our interpretations lean on the writings of Adorno, Benjamin and Lacan. In a first time, a strict study of ligetian techniques can show how the repetition exceed a “neutral level” and become an element of historic awareness. Afterwards, the relations with musical tradition are explored more exactly through the exemple of the concerto, one of the favorite form of Ligeti. The quotation is studied with the analysis of Le Grand Macabre, a work in which the connexions between repetitions and quotations ask a question of signification and integration of the past. In the chapter four, Ligeti's style is compared with those of Mahler and Beethoven, before to be questionned about particular affects who can be found in the works of musical theater, and also beeing transformed in the later production of the composer
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Nasr, Maria. "La didactique de la traduction - une étude scientométrique." Thesis, Paris 3, 2010. http://www.theses.fr/2010PA030050.
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Cette thèse est une analyse scientométrique d’un corpus de 542 textes sur la didactique de la traduction publiés entre 1966 et 2009. L’objectif est de voir à travers une analyse des citations quels auteurs ont influencé ce domaine et quels sont les titres, les langues, les supports et les domaines de textes les plus cités. La plupart des auteurs les plus cités sont des traductologues non didacticiens. L’approche fonctionnaliste et l’approche linguistique de la traduction sont les courants de pensée les plus présents parmi ces auteurs dont l’influence est surtout théorique et méthodologique (méthodes d’enseignement). Les textes didactiques reflètent le poids des institutions européennes puisque la plupart des auteurs cités se trouvent sur ce continent. Les auteurs français sont cités presque uniquement par des auteurs du monde francophone alors que les germanophones les plus cités ont de l’écho auprès d’auteurs d’horizons variés. La plupart des écrits les plus cités sont des monographies de recherche traductologique publiées dans les années quatre-vingt dix par des enseignants et praticiens de la traduction. Les écrits les plus citées entre 1966 et 2005 sont des textes de recherche traductologique non didactiques alors que la période 2006-2009 est marquée par les textes didactiques sur la traduction non littéraire. Les articles d’ouvrages collectifs et de revues sont moins cités que les monographies et les auteurs citent davantage de textes anciens que récents. La majorité des textes cités sont écrits en anglais. Par ailleurs, les auteurs du corpus sont très influencés par les écrits traductologiques non didactiques et peu par des textes d’autres domainesThis thesis is a scientometric study on 542 texts about translation didactics published between 1966 and 2009. The purpose is to investigate what authors have influenced this field and what texts, languages, types of media and disciplines are the most cited. Most cited authors are translation scholars who are not specialized in translation didactics. The functionalist and linguistic approach of translation are the most cited trends among the most cited authors. These authors are mostly cited for their theories and their teaching methods. Citing texts show the influence of European institutions, since most cited authors are affiliated in European countries. French authors are practically only cited by authors affiliated in French-speaking countries and the most influential German-speaking authors are cited by authors from various countries. The majority of most cited texts are monographs on translation studies published in the nineties by teachers and translators. The most cited texts between 1966 and 2005 deal with translation studies research (non-didactic texts) and the most cited texts between 2006 and 2009 are didactic texts on non-literary translation. Papers in collective books and journals are less cited than monographs. Authors also cite more ‘old’ texts than ‘recent’ texts (released more or less than five years after the publication of the citing text). Most cited texts are written in English and texts on translation studies (non-didactic texts) are a lot more cited than texts from other disciplines
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Mourad, Ghassan. "Analyse informatique des signes typographiques pour la segmentation de textes et l'extraction automatique de citations : réalisation des applications informatiques : SegATex et CitaRE." Paris 4, 2001. http://www.theses.fr/2001PA040100.
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Ce travail s'inscrit dans le cadre d'un projet mené au sein de l'équipe LaLIC (Langage, Logique, Informatique et Cognition). Il est opérationnel d'un point de vue informatique et a pour objectif de définir le besoin en terme de segmentation de texte, et d'interprétation sémantique de marqueurs typographiques, pour le filtrage d'information. Il a abouti à la réalisation de deux applications SegATex et CitaRE. Nous avons défini les valeurs des signes de ponctuation, et nous nous sommes intéressé à l'étude historique de la ponctuation en particulier à l'origine de la forme graphique de la virgule et son éventuelle relation avec une autre particule (le waw) dans la langue arabe. L'application SegATex (Segmentation Automatique de Textes) est destinée en tant que module informatique à préparer (baliser) le texte pour un traitement automatique de langue. Parmi ces traitements, figurent la segmentation de textes en sections, sous-sections, paragraphes, phrases, titres et énumérations. La troisième partie de cette thèse traite de " l'extraction automatique de la citation " qui a abouti à la réalisation du système CitaRE (Citation : Repérage et Extraction). Afin de répondre aux besoins de filtrage et d'extraction de connaissances (la citation), nous avons adopté la méthode d'exploration contextuelleThe present work comes within the scope of a project carried out by the LaLIC research team (Langage, Logique, Informatique et Cognition). From a computer perspective this work is of an operational value and it aims at defining the requirements in terms of text segmentation and semantic interpretation of typographic marks for filtering information. The final outcome of this work are the SegATex and CitaRE applications. We proceeded in defining the value of punctuation marks and followed with a historical study of punctuation. We took special interest in the origins of the graphical form of the comma and its eventual relation with the waw, a particle in Arabic language. The SegATex application (Automatic Segmentation of Texts), as a computer module, is intended to prepare (to tag) a text for an automatic language processing which includes text segmentation in sections, sub sections, paragraphs, sentences, titles and enumeration. In the third part of the thesis we treat the "automatic extraction of quotations". The outcome of this part is the CitaRE system (Citation : Repérage et Extraction). We have followed the method of contextual exploration in order to comply with the requirements for filtering and extracting knowledge (the quotation)
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Alrahabi, Al Moatasem. "Excom‑2 : plateforme d’annotation automatique de catégories sémantiques : conception, modélisation et réalisation informatique : applications à la catégorisation des citations en arabe et en français." Thesis, Paris 4, 2010. http://www.theses.fr/2010PA040005.
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Nous proposons une plateforme d’annotation sémantique, appelée « EXCOM-2 ». Basée sur la méthode de l’ « Exploration Contextuelle », elle permet, à travers une diversité de langues, de procéder à des annotations automatiques de segments textuels par l'analyse des formes de surface dans leur contexte. Les textes sont traités selon des « points de vue » discursifs dont les valeurs sont organisées dans une « carte sémantique ». L’annotation se base sur un ensemble de règles linguistiques, écrites par un analyste, qui permettent d’identifier les représentations textuelles sous-jacentes aux différentes catégories de la carte. Le système offre, à travers deux types d’interfaces (développeur ou utilisateur), une chaîne de traitements automatiques de textes qui comprend la segmentation, l’annotation et d’autres fonctionnalités de post-traitement. Les documents annotés peuvent être utilisés, par exemple, pour des systèmes de recherche d’information, de veille, de classification ou de résumé automatique. Comme exemple d'application, nous proposons un système d'identification et de catégorisation automatiques du discours rapporté en arabe et en françaisWe propose a platform for semantic annotation, called “EXCOM-2”. Based on the “Contextual Exploration” method, it enables, across a great range of languages, to perform automatic annotations of textual segments by analyzing surface forms in their context. Texts are approached through discursive “points of view”, of which values are organized into a “semantic map”. The annotation is based on a set of linguistic rules, manually constructed by an analyst, and that enables to automatically identify the textual representations underlying the different semantic categories of the map. The system provides through two sorts of user-friendly interfaces (analyst or end-user) a complete pipeline of automatic text processing which consists of segmentation, annotation and other post-processing functionalities. Annotated documents can be used, for instance, for information retrieval systems, classification or automatic summarization. As example, we propose an analysis of the linguistic markers of the enunciative modalities in direct reported speech, in a multilingual framework concerning Arabic and French
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Topia, André. "Modèles et écarts : scénarios d'écriture de Dubliners à Ulysses." Paris 8, 1995. http://www.theses.fr/1995PA080917.
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Ce travail analyse les strategies d'ecriture dans trois oeuvres de james joyce, dubliners, a portrait of the artist as a young man et ulysses, et cela a partir des trois notions de scenario, modele et ecart. Le scenario est ce qui fait de l'ecriture une programmation aleatoire jouant sur les ecarts possibles a partir d'un modele. Dubliners offre des recits programmatiques dans lesquels le deroulement semble obeir a une matrice virtuelle. Nous y examinons successivement la question des cycles perturbes ("the sisters"), de la mediation devoyee (du fantasme comme brouillage optique ("araby"), de la figure de la boucle ("eveline"), du mimodrame emblematique ("two gallants"), du temps programmatique ("the boarding house"), de la copie comme subversion ("counterparts"), du texte gauchi ("clay"), du cliche comme scenario ("a painful case") et du moi comme frontiere ("the dead"). Le portrait montre d'une part un modele liturgique fonde sur des rites d'incarnation, d'autre part un modele dialogique fonde sur une dynamique de l'echange verbal et gestuel. Dans ulysses, les distorsions s'amplifient : conductivite et circulation dans "calypso" ; brouillage du corps par la fluidite musicale dans "sirens" ; montage entre la repetition de la voix et la reproduction du stereotype dans "cyclops" ; decalage entre le texte trompe-l'oeil de gerty et les ecarts du laboratoire bloomien dans "nausicaa" ; fabrication dans "circe" d'un texte gigogne fantasmatique ; subversion du questionnement catechistique par la clarification scolastique dans "ithaca". Nous concluons que dans ulysses la boucle bloomienne est une dialectique de l'ecartThis thesis analyses the writing strategies in three works by james joyce : dubliners, a portrait of the artist as a young man and ulysses, and this according to the notions of scenario, model and deviation. In a scenario, writing becomes a variable programming displaying possible deviations from a model. Dubliners offers programmatic narratives whose unfolding seems to conform to a virtual matrix. We examine successively the question of perturbed cyctes ("the sisters"), of perverted mediation ("an encounter"), of the figure of the loop ("eveline"), of emblematic mimodrama ("two gallants"), of programmatic time ("the boarding house"), of copy as subversion ("counterparts"), of writing as a warping process ("clay"), of cliche as scenario ("a painful case") and of the ego as frontier ("the dead"). The portrait shows both a liturgical model based on rites of incarnation and a dialogical model based on a dynamic exchange of words and gestures. In ulysses the gaps widen : conductivity and circulation in "calypso" ; blurring of the bodily functions by the fluidity of music in "sirens" ; montage of vocal repetition and stereotyped reproduction in "cyclops" ; contrast between gerty's trompel'oeil text and the experiments in the bloomian laboratory ; constitution in "circe" of a fantasmic texte gigogne ; subversion of catechistic questioning by scholastic clarificatio in "ithaca". We conclude that in ulysses the bloomian figure of the loop involves a dialectic of deviation
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Hand, Jeff. "Feasibility of using citations as document summaries /." Philadelphia, Pa. : Drexel University, 2003. http://dspace.library.drexel.edu/handle/1860/288.
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Renaud, Pascale. "Sylvie et Bruno : l'oeuvre oubliée de Lewis Carroll." Rennes 2, 2002. http://www.theses.fr/2002REN20008.
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Sylvie et Bruno a été peu reçu et très peu apprécié, comme en témoigne la revue de la réception critique de la parution du livre à nos jours. L'hypothèse d'une relation fantasmatique auteur-lecteur défaillante ne suffit pas à justifier l'échec de la lecture par la majorité des carrolliens. La compréhension de la non réception du roman passe par l'analyse du carrollisme, qui fonctionne comme une idéologie basée sur l'image mythique de "Lewis Carroll", et face à laquelle chaque carrollien doit prendre position. Le reproche principal tient au fait que Carroll n'a pas poursuivi, avec Sylvie et Bruno, dans la veine de la littérature enfantine qu'il a contribué à renouveler. Or il affirme lui-même la nouveauté radicale de ce roman et insite sur les "graves pensées" qu'il a souhaité y intégrer en plus du nonsense destiné aux enfants. La relecture du texte permet de mettre en évidence les influences littéraires, philosophiques, religieuses et sociales qui éclaircissent les prises de position de Carroll sur la fin de sa vie, ainsi que la forme d'agencement narratif retenue par l'auteur, que Gilles Deleuze qualifie de "méthode sérielle" et qui témoigne d'une grande modernité. Cette étude témoigne de l'importance trop longtemps négligée de Sylvie et Bruno dans l'oeuvre de Lewis Carroll et tente de réamorcer la lecture du romanSylvie and Bruno has been little received and little liked, as shows a review of the critical reception of the novel since its publication. The hypothesis of an unsteady fantasy based relationship between author and reader fails to account for the incapacity of most Carrollians to read this opus. An analysis of Carrollism is therefore necessary ; it functions as an ideology, based on a mythical image of " Lewis Carroll " towards which every Carrollian needs to position him/herself. The main reproach towards Sylvie and Bruno is that Carroll failed to keep writing Nonsense such as he used in the Alices. Yet, he proclaimed the radical novelty of this work and insisted on the " grave thoughts " which he wished to develop besides lighter passages destined to children. A new reading of the text allows us to put forward the literary, philosophical, religious and social influences which shade new light on Carroll's position in his later years, as well as the literary form he decided upon, which was called by Gilles Deleuze a " serial method " and proves to be very modern. This study intends to show the importance of this opus in Carroll's works, and to reinitiate its critical reading
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Jones, Teresa Helen. "From health research to clinical practice : understanding pathways that use journal articles and informing impact assessment." Thesis, Brunel University, 2017. http://bura.brunel.ac.uk/handle/2438/15606.
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For biomedical research to improve clinical practice, and for funding levels to be sustained, it is increasingly important to understand the pathways from research to clinical practice and to assess the societal impact of research. Approaches to research evaluation through traditional study of journals, journal articles and standard citation analysis, have played comparatively small roles in these developments. In this thesis I critically review how I applied existing methods, and developed a new approach, to study two pathways from research to clinical practice. For Pathway 1, questionnaire surveys of clinicians' views on journals read to inform their clinical practice, and comparisons with impact factors, revealed that a few journals were read widely and considered important by clinicians. Relationships between journal importance and impact factor were complex. For Pathway 2, I applied a novel methodology to identify important citations to four key research papers in an attempt to trace important citations through numerous citing generations. My findings included: few cited papers were important to the citing papers; the number of citation occasions within the citing paper correlated strongly with a cited paper's importance; self-citations were also important; and it was feasible to trace through a series of generations of citations. Evidence of societal impact of the four key research papers examined in my studies included important papers in subsequent generations cited in clinical guidelines, many of which were international. In assessing the impact of my own studies, I found Pathway 1 papers had societal impact on research evaluation methodology; journal editorial policy; and medical library provision policy and practice. Societal impacts of the new methodology, Pathway 2, included informing further methodological development and research evaluation. My portfolio, together with my critical review, adds understanding and provides additional data to current assessment methods of wider impacts of research, and bases for further studies.
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Ortega, Priego Jose Luis. "REFERENCE ANALYSIS BASE ON A VECTORIAL SPACES MODEL: CONTEMPORANY HISTORY IN JAEN RESEARCH FOR 1990-1995." CINDOC, 2001. http://hdl.handle.net/10150/105497.
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Bibliometry; Citation analysis; Vectorials Spaces Model (VSM); Multidimensional Scaling (MDS); Mapping of Science; Contemporany HistoryThe spatial perfomance of the relationships there are among researchers in Contemporany History of Jaén for 1990-1995 through their behaviour in citing process is the objetive of this work. Through reference analysis bases on Vectorial Spaces Model (VSM) and displayed in a graphic thanks to Multidimensional Scaling (MDS) are obtained results about research fronts, who lead them, who made up them, and the "disciple/master" relationships there are among researchers.
Books on the topic "Analyse de citations"
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Les citations vétéro-testamentaires dans les versions coptes des Evangiles: Recueil et analyse critique. Genève: Patrick Cramer éditeur, 1998.
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Luisier, Philippe. Les citations vétéro-testamentaires dans les versions coptes des Evangiles: Recueil et analyse critique. Genève: Patrick Cramer éditeur, 1998.
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The Publish or perish book: Your guide to effective and responsible citation analysis. Melbourne: Tarma Software Research Pty Ltd, 2010.
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Whitmore, Susan. Biotechnology in food science & technology, 1981-1986: 293 citations. Beltsville, Md: U.S. Dept. of Agriculture, National Agricultural Library, 1986.
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Selden, Catherine. Meta-analysis: January 1980 through December 1992 : 337 citations. Bethesda, Md: U.S. Dept. of Health and Human Services, Public Health Service, National Institutes of Health, National Library of Medicine, Reference Section, 1992.
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Selden, Catherine. Meta-analysis: January 1980 through December 1992 : 337 citations. Bethesda, Md. (8600 Rockville Pike, Bethesda 20894): U.S. Dept. of Health and Human Services, Public Health Service, National Institutes of Health, National Library of Medicine, Reference Section, 1992.
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Selden, Catherine. Meta-analysis: January 1980 through December 1992 : 337 citations. Bethesda, Md: U.S. Dept. of Health and Human Services, Public Health Service, National Institutes of Health, National Library of Medicine, Reference Section, 1992.
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Gordner, Ronald L. Critical pathways: January 1988 through December 1995 : 753 citations. Bethesda, Md. (8600 Rockville Pike, Bethesda 20894): U.S. Dept. of Health and Human Services, Public Health Service, National Institutes of Health, National Library of Medicine, Reference Section, 1995.
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Gordner, Ronald L. Critical pathways: January 1988 through December 1995 : 753 citations. Bethesda, Md. (8600 Rockville Pike): U.S. Dept. of Health and Human Services, Public Health Service, National Institutes of Health, National Library of Medicine, Reference Section, 1995.
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Karl, Schneider. Soil testing and plant analysis for fertilizer recommendation, 1970-86: 141 citations. Beltsville, Md: U.S. Dept. of Agriculture, National Agricultural Library, 1986.
Find full textBook chapters on the topic "Analyse de citations"
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Kim, Jieun, Buyong Jeong, and Daejung Kim. "Patent Citations Analysis." In Patent Analytics, 73–82. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-2930-3_6.
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Parthasarathy, G., and D. C. Tomar. "Trends in Citation Analysis." In Advances in Intelligent Systems and Computing, 813–21. New Delhi: Springer India, 2014. http://dx.doi.org/10.1007/978-81-322-2012-1_88.
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Qiu, Junping, Rongying Zhao, Siluo Yang, and Ke Dong. "Methods of Citation Analysis." In Informetrics, 207–309. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-4032-0_8.
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Mahalakshmi, G. S., S. Sendhilkumar, and S. Dilip Sam. "Refining Research Citations through Context Analysis." In Advances in Intelligent Systems and Computing, 65–71. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-32063-7_8.
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Moed, Henk F. "Comparing Full Text Downloads and Citations." In Qualitative and Quantitative Analysis of Scientific and Scholarly Communication, 287–300. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-60522-7_19.
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Moro, Robert, Mate Vangel, and Maria Bielikova. "Identification of Navigation Lead Candidates Using Citation and Co-Citation Analysis." In Lecture Notes in Computer Science, 556–68. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-49192-8_45.
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Yuan, Ke, Liangcai Gao, Zhuoren Jiang, and Zhi Tang. "Formula Citation Graph Based Mathematical Information Retrieval." In Document Analysis and Recognition – ICDAR 2021, 631–47. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-86549-8_40.
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Moed, Henk F. "From Relative Citation Rates to Altmetrics." In Qualitative and Quantitative Analysis of Scientific and Scholarly Communication, 245–58. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-60522-7_17.
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Swinyard, William R., Heikki Rinne, and Ah Keng Kau. "The Morality of Software Piracy: A Cross-Cultural Analysis." In Citation Classics from the Journal of Business Ethics, 565–78. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-4126-3_29.
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Cohn, Ellen G., David P. Farrington, and Amaia Iratzoqui. "Citation Analysis in Criminology and Criminal Justice." In Most-Cited Scholars in Criminology and Criminal Justice, 1986-2010, 1–13. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-01222-3_1.
Full textConference papers on the topic "Analyse de citations"
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Ji, Taoran, Zhiqian Chen, Nathan Self, Kaiqun Fu, Chang-Tien Lu, and Naren Ramakrishnan. "Patent Citation Dynamics Modeling via Multi-Attention Recurrent Networks." In Twenty-Eighth International Joint Conference on Artificial Intelligence {IJCAI-19}. California: International Joint Conferences on Artificial Intelligence Organization, 2019. http://dx.doi.org/10.24963/ijcai.2019/364.
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Modeling and forecasting forward citations to a patent is a central task for the discovery of emerging technologies and for measuring the pulse of inventive progress. Conventional methods for forecasting these forward citations cast the problem as analysis of temporal point processes which rely on the conditional intensity of previously received citations. Recent approaches model the conditional intensity as a chain of recurrent neural networks to capture memory dependency in hopes of reducing the restrictions of the parametric form of the intensity function. For the problem of patent citations, we observe that forecasting a patent's chain of citations benefits from not only the patent's history itself but also from the historical citations of assignees and inventors associated with that patent. In this paper, we propose a sequence-to-sequence model which employs an attention-of-attention mechanism to capture the dependencies of these multiple time sequences. Furthermore, the proposed model is able to forecast both the timestamp and the category of a patent's next citation. Extensive experiments on a large patent citation dataset collected from USPTO demonstrate that the proposed model outperforms state-of-the-art models at forward citation forecasting.
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Parthasarathy, G., and D. C. Tomar. "Sentiment analyzer: Analysis of journal citations from citation databases." In 2014 5th International Conference- Confluence The Next Generation Information Technology Summit. IEEE, 2014. http://dx.doi.org/10.1109/confluence.2014.6949321.
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Mogee, Mary Ellen. "Comparison of US, EPO, and PCT Patent Citations for Citation Analysis." In 2007 Atlanta Conference on Science, Technology and Innovation Policy. IEEE, 2007. http://dx.doi.org/10.1109/acstip.2007.4472902.
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Bütün, Ertan, Mehmet Kaya, and Reda Alhajj. "A Supervised Learning Method for Prediction Citation Count of Scientists in Citation Networks." In ASONAM '17: Advances in Social Networks Analysis and Mining 2017. New York, NY, USA: ACM, 2017. http://dx.doi.org/10.1145/3110025.3110160.
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Liu, Xiaozhong, Jinsong Zhang, and Chun Guo. "Full-text citation analysis." In the 21st ACM international conference. New York, New York, USA: ACM Press, 2012. http://dx.doi.org/10.1145/2396761.2398555.
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Danlos, Laurence, Benoît Sagot, and Rosa Stern. "Analyse discursive des incises de citation." In 2ème Congrès Mondial de Linguistique Française. Les Ulis, France: EDP Sciences, 2010. http://dx.doi.org/10.1051/cmlf/2010217.
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Jia, Haofeng, and Erik Saule. "An Analysis of Citation Recommender Systems." In ASONAM '17: Advances in Social Networks Analysis and Mining 2017. New York, NY, USA: ACM, 2017. http://dx.doi.org/10.1145/3110025.3110150.
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Mazov, Nikolay, and Vadim Gureyev. "Journals’ hidden self-citation as the problem of publication ethics." In The Book. Culture. Education. Innovations. Russian National Public Library for Science and Technology, 2020. http://dx.doi.org/10.33186/978-5-85638-223-4-2020-140-149.
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Twenty two science Russian periodicals in informatics and library studies are selected for the bibliometrical analysis of key journal indicators, including publication activity of the same journals’ editorial staff. For the first time for domestic journals, the study reveals hidden self-citation when editorial members include links to their journal from other publications. The available instruments of scientometrical databases, including Web of Science and Scopus, and the national system Russian Science Citation Index do not enable to identify this form of self-citation. The mentioned manipulations are aimed at boosting journal rating. In several cases, intensive and unjustified citation by journals’ editorial staff in other periodicals which we consider the violation of publication ethical principles, is revealed.
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Ma, Zheng, Jinseok Nam, and Karsten Weihe. "Improve Sentiment Analysis of Citations with Author Modelling." In Proceedings of the 7th Workshop on Computational Approaches to Subjectivity, Sentiment and Social Media Analysis. Stroudsburg, PA, USA: Association for Computational Linguistics, 2016. http://dx.doi.org/10.18653/v1/w16-0420.
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Soares, Rafael Henrique Santos, Jorge H. C. Fernandes, and Ricardo Sampaio. "Formal Information Flows Among Top Authorities of the Brazilian Federal Government based on Co-word Analysis of Data Published in the Official Gazette." In Brazilian Workshop on Social Network Analysis and Mining. Sociedade Brasileira de Computação - SBC, 2019. http://dx.doi.org/10.5753/brasnam.2016.6450.
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This paper describes a methodology for modeling social networks of formal communications among top authorities of the Brazilian Federal Government grounded on data available in the government official gazette (Diário Oficial da União). The text of a large number of official publications such as presidential decrees, ministerial orders and authority nominations was analyzed for identification of citations to organizations and persons. The co-occurrence of names of persons in such publications created a network of relations among such persons. An ego-network was built around the president Dilma Rousseff. Metrics of social network analysis were collected and analyzed in an exploratory fashion.
Reports on the topic "Analyse de citations"
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Kostoff, Ronald N., and Wendy L. Martinez. Science and Technology Citation Analysis is Citation Normalization Realistic. Fort Belvoir, VA: Defense Technical Information Center, September 2004. http://dx.doi.org/10.21236/ada426271.
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Paynter, Robin A., Celia Fiordalisi, Elizabeth Stoeger, Eileen Erinoff, Robin Featherstone, Christiane Voisin, and Gaelen P. Adam. A Prospective Comparison of Evidence Synthesis Search Strategies Developed With and Without Text-Mining Tools. Agency for Healthcare Research and Quality (AHRQ), March 2021. http://dx.doi.org/10.23970/ahrqepcmethodsprospectivecomparison.
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Background: In an era of explosive growth in biomedical evidence, improving systematic review (SR) search processes is increasingly critical. Text-mining tools (TMTs) are a potentially powerful resource to improve and streamline search strategy development. Two types of TMTs are especially of interest to searchers: word frequency (useful for identifying most used keyword terms, e.g., PubReminer) and clustering (visualizing common themes, e.g., Carrot2). Objectives: The objectives of this study were to compare the benefits and trade-offs of searches with and without the use of TMTs for evidence synthesis products in real world settings. Specific questions included: (1) Do TMTs decrease the time spent developing search strategies? (2) How do TMTs affect the sensitivity and yield of searches? (3) Do TMTs identify groups of records that can be safely excluded in the search evaluation step? (4) Does the complexity of a systematic review topic affect TMT performance? In addition to quantitative data, we collected librarians' comments on their experiences using TMTs to explore when and how these new tools may be useful in systematic review search¬¬ creation. Methods: In this prospective comparative study, we included seven SR projects, and classified them into simple or complex topics. The project librarian used conventional “usual practice” (UP) methods to create the MEDLINE search strategy, while a paired TMT librarian simultaneously and independently created a search strategy using a variety of TMTs. TMT librarians could choose one or more freely available TMTs per category from a pre-selected list in each of three categories: (1) keyword/phrase tools: AntConc, PubReMiner; (2) subject term tools: MeSH on Demand, PubReMiner, Yale MeSH Analyzer; and (3) strategy evaluation tools: Carrot2, VOSviewer. We collected results from both MEDLINE searches (with and without TMTs), coded every citation’s origin (UP or TMT respectively), deduplicated them, and then sent the citation library to the review team for screening. When the draft report was submitted, we used the final list of included citations to calculate the sensitivity, precision, and number-needed-to-read for each search (with and without TMTs). Separately, we tracked the time spent on various aspects of search creation by each librarian. Simple and complex topics were analyzed separately to provide insight into whether TMTs could be more useful for one type of topic or another. Results: Across all reviews, UP searches seemed to perform better than TMT, but because of the small sample size, none of these differences was statistically significant. UP searches were slightly more sensitive (92% [95% confidence intervals (CI) 85–99%]) than TMT searches (84.9% [95% CI 74.4–95.4%]). The mean number-needed-to-read was 83 (SD 34) for UP and 90 (SD 68) for TMT. Keyword and subject term development using TMTs generally took less time than those developed using UP alone. The average total time was 12 hours (SD 8) to create a complete search strategy by UP librarians, and 5 hours (SD 2) for the TMT librarians. TMTs neither affected search evaluation time nor improved identification of exclusion concepts (irrelevant records) that can be safely removed from the search set. Conclusion: Across all reviews but one, TMT searches were less sensitive than UP searches. For simple SR topics (i.e., single indication–single drug), TMT searches were slightly less sensitive, but reduced time spent in search design. For complex SR topics (e.g., multicomponent interventions), TMT searches were less sensitive than UP searches; nevertheless, in complex reviews, they identified unique eligible citations not found by the UP searches. TMT searches also reduced time spent in search strategy development. For all evidence synthesis types, TMT searches may be more efficient in reviews where comprehensiveness is not paramount, or as an adjunct to UP for evidence syntheses, because they can identify unique includable citations. If TMTs were easier to learn and use, their utility would be increased.
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Rodriguez, Simon, Tim Hwang, and Rebecca Gelles. Comparing Corporate and University Publication Activity in AI/ML. Center for Security and Emerging Technology, January 2021. http://dx.doi.org/10.51593/20200067.
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Based on news coverage alone, it can seem as if corporations dominate the research on artificial intelligence and machine learning when compared to the work of universities and academia. Authors Simon Rodriguez, Tim Hwang and Rebecca Gelles analyze the data over the past decade of research publications and find that, in fact, universities are the more dominant producers of AI papers. They also find that while corporations do tend to generate more citations to the work they publish in the field, these “high performing” papers are most frequently cross-collaborations with university labs
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Mirel, Lisa, Cindy Zhang, Christine Cox, Ye Yeats, Félix Suad El Burai, and Golden Cordell. Comparative analysis of the National Health and Nutrition Examination Survey public-use and restricted-use linked mortality files. Centers for Disease Control and Prevention (U.S.), May 2021. http://dx.doi.org/10.15620/cdc:104744.
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"Objectives—Linking national survey data with administrative data sources enables researchers to conduct analyses that would not be possible with each data source alone. Recently, the Data Linkage Program at the National Center for Health Statistics (NCHS) released updated Linked Mortality Files, including the National Health and Nutrition Examination Survey data linked to the National Death Index mortality files. Two versions of the files were released: restricted-use files available through NCHS and Federal Statistical Research Data Centers and public-use files. To reduce the reidentification risk, statistical disclosure limitation methods were applied to the public-use files before they were released. This included limiting the amount of mortality information available and perturbing cause of death and follow-up time for select records. Methods—To assess the comparability of the restricted-use and public-use files, relative hazard ratios for all-cause and cause-specific mortality using Cox proportional hazards models were estimated and compared. Results—The comparative analysis found that the two data files yield similar descriptive and model results. Suggested citation: Mirel LB, Zhang C, Cox CS, Ye Y, El Burai Félix S, Golden C. Comparative analysis of the National Health and Nutrition Examination Survey public-use and restricted-use linked mortality files. National Health Statistics Reports; no 155. Hyattsville, MD: National Center for Health Statistics. 2021. DOI: https://doi.org/10.15620/cdc:104744. CS323656 nhsr155-508.pdf"
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Hilbrecht, Margo, David Baxter, Alexander V. Graham, and Maha Sohail. Research Expertise and the Framework of Harms: Social Network Analysis, Phase One. GREO, December 2020. http://dx.doi.org/10.33684/2020.006.
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In 2019, the Gambling Commission announced a National Strategy to Reduce Gambling Harms. Underlying the strategy is the Framework of Harms, outlined in Measuring gambling-related harms: A framework for action. "The Framework" adopts a public health approach to address gambling-related harm in Great Britain across multiple levels of measurement. It comprises three primary factors and nine related subfactors. To advance the National Strategy, all componentsneed to be supported by a strong evidence base. This report examines existing research expertise relevant to the Framework amongacademics based in the UK. The aim is to understand the extent to which the Framework factors and subfactors have been studied in order to identify gaps in expertise and provide evidence for decision making thatisrelevant to gambling harms research priorities. A social network analysis identified coauthor networks and alignment of research output with the Framework. The search strategy was limited to peer-reviewed items and covered the 12-year period from 2008 to 2019. Articles were selected using a Web of Science search. Of the 1417 records identified in the search, the dataset was refined to include only those articles that could be assigned to at least one Framework factor (n = 279). The primary factors and subfactors are: Resources:Work and Employment, Money and Debt, Crime;Relationships:Partners, Families and Friends, Community; and Health:Physical Health, Psychological Distress, and Mental Health. We used Gephi software to create visualisations reflecting degree centrality (number of coauthor networks) so that each factor and subfactor could be assessed for the density of research expertise and patterns of collaboration among coauthors. The findings show considerable variation by framework factor in the number of authors and collaborations, suggesting a need to develop additional research capacity to address under-researched areas. The Health factor subcategory of Mental Health comprised almost three-quarters of all citations, with the Resources factor subcategory of Money and Debt a distant second at 12% of all articles. The Relationships factor, comprised of two subfactors, accounted for less than 10%of total articles. Network density varied too. Although there were few collaborative networks in subfactors such as Community or Work and Employment, all Health subfactors showed strong levels of collaboration. Further, some subfactors with a limited number of researchers such as Partners, Families, and Friends and Money and debt had several active collaborations. Some researchers’ had publications that spanned multiple Framework factors. These multiple-factor researchers usually had a wide range of coauthors when compared to those who specialised (with the exception of Mental Health).Others’ collaborations spanned subfactors within a factor area. This was especially notable forHealth. The visualisations suggest that gambling harms research expertise in the UK has considerable room to grow in order to supporta more comprehensive, locally contextualised evidence base for the Framework. To do so, priority harms and funding opportunities will need further consideration. This will require multi-sector and multidisciplinary collaboration consistent with the public health approach underlying the Framework. Future research related to the present analysis will explore the geographic distribution of research activity within the UK, and research collaborations with harms experts internationally.
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Garsa, Adam, Julie K. Jang, Sangita Baxi, Christine Chen, Olamigoke Akinniranye, Owen Hall, Jody Larkin, Aneesa Motala, Sydne Newberry, and Susanne Hempel. Radiation Therapy for Brain Metasases. Agency for Healthcare Research and Quality (AHRQ), June 2021. http://dx.doi.org/10.23970/ahrqepccer242.
Full textAbstract:
Objective. This evidence report synthesizes the available evidence on radiation therapy for brain metastases. Data sources. We searched PubMed®, Embase®, Web of Science, Scopus, CINAHL®, clinicaltrials.gov, and published guidelines in July 2020; assessed independently submitted data; consulted with experts; and contacted authors. Review methods. The protocol was informed by Key Informants. The systematic review was supported by a Technical Expert Panel and is registered in PROSPERO (CRD42020168260). Two reviewers independently screened citations; data were abstracted by one reviewer and checked by an experienced reviewer. We included randomized controlled trials (RCTs) and large observational studies (for safety assessments), evaluating whole brain radiation therapy (WBRT) and stereotactic radiosurgery (SRS) alone or in combination, as initial or postoperative treatment, with or without systemic therapy for adults with brain metastases due to non-small cell lung cancer, breast cancer, or melanoma. Results. In total, 97 studies, reported in 190 publications, were identified, but the number of analyses was limited due to different intervention and comparator combinations as well as insufficient reporting of outcome data. Risk of bias varied; 25 trials were terminated early, predominantly due to poor accrual. Most studies evaluated WBRT, alone or in combination with SRS, as initial treatment; 10 RCTs reported on post-surgical interventions. The combination treatment SRS plus WBRT compared to SRS alone or WBRT alone showed no statistically significant difference in overall survival (hazard ratio [HR], 1.09; confidence interval [CI], 0.69 to 1.73; 4 RCTs; low strength of evidence [SoE]) or death due to brain metastases (relative risk [RR], 0.93; CI, 0.48 to 1.81; 3 RCTs; low SoE). Radiation therapy after surgery did not improve overall survival compared with surgery alone (HR, 0.98; CI, 0.76 to 1.26; 5 RCTs; moderate SoE). Data for quality of life, functional status, and cognitive effects were insufficient to determine effects of WBRT, SRS, or post-surgical interventions. We did not find systematic differences across interventions in serious adverse events radiation necrosis, fatigue, or seizures (all low or moderate SoE). WBRT plus systemic therapy (RR, 1.44; CI, 1.03 to 2.00; 14 studies; moderate SoE) was associated with increased risks for vomiting compared to WBRT alone. Conclusion. Despite the substantial research literature on radiation therapy, comparative effectiveness information is limited. There is a need for more data on patient-relevant outcomes such as quality of life, functional status, and cognitive effects.
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Carney, Nancy, Tamara Cheney, Annette M. Totten, Rebecca Jungbauer, Matthew R. Neth, Chandler Weeks, Cynthia Davis-O'Reilly, et al. Prehospital Airway Management: A Systematic Review. Agency for Healthcare Research and Quality (AHRQ), June 2021. http://dx.doi.org/10.23970/ahrqepccer243.
Full textAbstract:
Objective. To assess the comparative benefits and harms across three airway management approaches (bag valve mask [BVM], supraglottic airway [SGA], and endotracheal intubation [ETI]) by emergency medical services in the prehospital setting, and how the benefits and harms differ based on patient characteristics, techniques, and devices. Data sources. We searched electronic citation databases (Ovid® MEDLINE®, CINAHL®, the Cochrane Central Register of Controlled Trials, the Cochrane Database of Systematic Reviews, and Scopus®) from 1990 to September 2020 and reference lists, and posted a Federal Register notice request for data. Review methods. Review methods followed Agency for Healthcare Research and Quality Evidence-based Practice Center Program methods guidance. Using pre-established criteria, studies were selected and dual reviewed, data were abstracted, and studies were evaluated for risk of bias. Meta-analyses using profile-likelihood random effects models were conducted when data were available from studies reporting on similar outcomes, with analyses stratified by study design, emergency type, and age. We qualitatively synthesized results when meta-analysis was not indicated. Strength of evidence (SOE) was assessed for primary outcomes (survival, neurological function, return of spontaneous circulation [ROSC], and successful advanced airway insertion [for SGA and ETI only]). Results. We included 99 studies (22 randomized controlled trials and 77 observational studies) involving 630,397 patients. Overall, we found few differences in primary outcomes when airway management approaches were compared. • For survival, there was moderate SOE for findings of no difference for BVM versus ETI in adult and mixed-age cardiac arrest patients. There was low SOE for no difference in these patients for BVM versus SGA and SGA versus ETI. There was low SOE for all three comparisons in pediatric cardiac arrest patients, and low SOE in adult trauma patients when BVM was compared with ETI. • For neurological function, there was moderate SOE for no difference for BVM compared with ETI in adults with cardiac arrest. There was low SOE for no difference in pediatric cardiac arrest for BVM versus ETI and SGA versus ETI. In adults with cardiac arrest, neurological function was better for BVM and ETI compared with SGA (both low SOE). • ROSC was applicable only in cardiac arrest. For adults, there was low SOE that ROSC was more frequent with SGA compared with ETI, and no difference for BVM versus SGA or BVM versus ETI. In pediatric patients there was low SOE of no difference for BVM versus ETI and SGA versus ETI. • For successful advanced airway insertion, low SOE supported better first-pass success with SGA in adult and pediatric cardiac arrest patients and adult patients in studies that mixed emergency types. Low SOE also supported no difference for first-pass success in adult medical patients. For overall success, there was moderate SOE of no difference for adults with cardiac arrest, medical, and mixed emergency types. • While harms were not always measured or reported, moderate SOE supported all available findings. There were no differences in harms for BVM versus SGA or ETI. When SGA was compared with ETI, there were no differences for aspiration, oral/airway trauma, and regurgitation; SGA was better for multiple insertion attempts; and ETI was better for inadequate ventilation. Conclusions. The most common findings, across emergency types and age groups, were of no differences in primary outcomes when prehospital airway management approaches were compared. As most of the included studies were observational, these findings may reflect study design and methodological limitations. Due to the dynamic nature of the prehospital environment, the results are susceptible to indication and survival biases as well as confounding; however, the current evidence does not favor more invasive airway approaches. No conclusion was supported by high SOE for any comparison and patient group. This supports the need for high-quality randomized controlled trials designed to account for the variability and dynamic nature of prehospital airway management to advance and inform clinical practice as well as emergency medical services education and policy, and to improve patient-centered outcomes.