1,720,994 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Characterization of young people with first episode psychosis or at ultra-high risk: The Reggio Emilia At-Risk Mental States (ReARMS) program
No full textAim. Twenty years of research on the Ultra-High Risk (UHR) paradigm have shown the importance of early intervention in psychosis (EIP) in reducing its severity and persistence. From September 2012, the Reggio Emilia Department of Mental Health developed a specific care pathway (the Reggio Emilia At-Risk Mental States [ReARMS] protocol) as an diffused, “liquid” EIP infrastructure branched within the network of all its adult and child/adolescent mental health service, aimed to offer an evidence-based, expertise-driven protocol of care to young people with a First Episode Psychosis (FEP) or an UHR mental state. Aim of the current study was to investigate patterns of referral to the ReARMS protocol during the first five years of clinical activity. Methods. All participants (n=300) were help-seeking adolescents and young adults, aged 13-35 years, who completed an ad-hoc socio-demographic/clinical schedule and the Comprehensive Assessment of At-Risk Mental States (CAARMS). Results. Among individuals who completed the baseline assessment, 95 (31.7%) did not comply with UHR/FEP defined criteria (UHR- subgroup), while 205 (68.3%) were offered the ReARMS protocol: of them, 154 (75.1%) accepted and were enrolled in the program, 19 (9.3%) refused, and 32 (15.6%) dropped out during the first year of treatment. In comparison with UHR- and UHR, FEP patients showed higher percentages of history of substance abuse and previous hospitalization, as well as higher levels of psychopathology and functioning. Individuals entering the ReARMS protocol were mainly referred by emergency room/general hospital, general practitioners, or they were self-referred. Conclusions. EIP on young subjects at UHR of psychosis (together with FEP patients) in Italian public mental health services is clinically relevant, feasible, and recommended, also in adolescence, where there is a specific high risk of falling through the child adult service gap
The Italian Version of the Brief 21-Item Prodromal Questionnaire: Field Test, Psychometric Properties and Age-Sensitive Cut-Offs.
No full textBACKGROUND:
The Brief, 21-item version of the Prodromal Questionnaire (PQ-B) is a promising screener for psychosis-risk states that could be implemented in routine clinical practice. In this study, we assessed psychometric properties of the Italian version of the PQ-B (iPQ-B) in a sample of 243 help-seekers, aged 13-35 years.
SAMPLING AND METHODS:
After completing the iPQ-B, participants were assessed with the Comprehensive Assessment of At-Risk Mental States (CAARMS). Diagnostic accuracy (sensitivity, specificity, positive and negative predictive values [PPV and NPV], positive and negative likelihood ratios) and concurrent validity between PQ-B and CAARMS were determined using Cronbach's alpha and Cohen's kappa. We also tested the validity of the adopted PQ-B cut-offs through Receiver Operating Characteristic (ROC) curves plotted against CAARMS diagnoses and the predictive validity of the iPQ-B at 1-year follow-up.
RESULTS:
The iPQ-B showed high internal consistency (Cronbach's alpha = 0.868), acceptable diagnostic accuracy and concurrent validity (70% sensitivity, 67% specificity, 81% PPV, Cohen's kappa = 0.335). ROC analyses pointed to threshold of ≥20 on the PQ-B total distress score as best cut-off. After 12 months of follow-up, 11% of participants who scored ≥4 on the PQ-B distressing item total score and did not meet CAARMS psychosis criteria at baseline, developed a psychotic disorder. Interestingly, age had significant negative correlations with iPQ-B scores and adolescents (aged < 18 years) showed higher iPQ-B scores than young adults.
CONCLUSIONS:
Overall, the psychometric properties of the iPQ-B were satisfactory. As iPQ-B scores appeared inversely associated to age, age-tailored cut-off scores are recommended for screening purposes in child-adolescent cohorts
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Screening for psychosis risk among help-seeking adolescents: application of the Italian version of the 16-item prodromal questionnaire (iPQ-16) in child and adolescent neuropsychiatry services
No full textAIM:
The 16-item Prodromal Questionnaire (PQ-16) is a versatile screen tool for routine screening of at-risk individuals. We wished to evaluate the psychometric properties of the Italian version of the PQ-16 (iPQ-16) in a sample of 72 help-seeking adolescents (age range 13-17 years) referred to child and adolescent neuropsychiatry services for diagnostic assessment.
METHODS:
Participants who completed iPQ-16 were subsequently interviewed with the Comprehensive Assessment of At-Risk Mental States (CAARMS) to confirm the psychosis high risk state. We then examined the diagnostic accuracy (sensitivity, specificity, positive and negative predictive values [PPV e NPV]) and concurrent validity between iPQ-16 and CAARMS using Cronbach's alpha and Cohen's kappa. We also tested the validity of the adopted iPQ-16 cut-offs through Receiver Operating Characteristic (ROC) curves plotted against CAARMS diagnoses and the 1-year predictive validity of the iPQ-16.
RESULTS:
Overall, the psychometric properties of the iPQ-16 were satisfactory. The iPQ-16 showed high internal consistency (Cronbach's alpha = .827) and acceptable diagnostic accuracy (77% sensitivity, 72% PPV) and concurrent validity (Cohen's k = 0.309). ROC analyses pointed to iPQ-16 total distress score of ≥10 as best cut-off.
CONCLUSION:
The iPQ-16 is a reliable and valid instrument for routine screening of at-risk individuals in Italian neuropsychiatry services
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
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