1,721,015 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
Functional recovery after rotator cuffrepair: the role of biceps surgery
No full textContext: Surgical cuff repair is recommended in a full-thickness rotator cuff tear when nonoperative treatment fails. Surgical cuff repair can include surgery of the long head of the biceps when concomitant biceps pathology is present. However, the studies executed up till now have not yet clearly defined if additional biceps surgery affects the shoulder functionality in patients who underwent rotator cuff repair. Objective: To verify if the concomitant biceps surgery prejudices shoulder functionality during the short-term period in rotator cuff repair patients. Design: Prospective and observational study. Setting: Outpatient service for rehabilitation. Patients: Ninety-three consecutive patients who had undergone surgery for full-thickness symptomatic rotator cuff tear were enrolled for rehabilitation; 25 underwent rotator cuff repair and tendon biceps surgery (ABS), while 68 underwent rotator cuff repair only (RCR). Interventions: Motor rehabilitation after surgical treatment of rotator cuff repair. Measures: Final Constant score was used as primary outcome measure, and efficiency and effectiveness in Constant score were evaluated both at the end of the last cycle of rehabilitation and 6 mo postsurgery. Results: Patients with rotator cuff repair and tendon biceps surgery had lower final scores (36.5 ± 12.0 vs 49.3 ± 13.0, P < .001), effectiveness (40.6 ± 18.0 vs 60.3 ± 20.0, P < .001), and efficiency (0.80 ± 0.5 vs 1.19 ± 0.6, P = .010) in Constant score than those with rotator cuff repair only at the end of rehabilitation. Moreover, they had a lower final score (53.3 ± 14.0 vs 64.5 ± 10.0, P < .001) and effectiveness (66.9 ± 21.0 vs 84.0 ± 16, P < .001) in Constant score 6 mo postsurgery. Gender was a determinant of final score, efficiency, and effectiveness in Constant score at the end of the rehabilitation period, while tendon biceps surgery was a determinant of final score and effectiveness in Constant score at the end of the rehabilitation period and at 6 mo postsurgery. Conclusions: This study highlights that concomitant tendon biceps surgery negatively affects functional outcome of patients who underwent rotator cuff repair and is an important determinant of shoulder functionality in the first 6 mo postsurgery
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
Skeletal muscle myopathy in heart failure: the role of ejection fraction
No full textPURPOSE OF REVIEW: This review summarizes: (1) the structural and functional features coupled with pathophysiological factors responsible of skeletal muscle myopathy (SMM) in both heart failure with reduced (HFrEF) and preserved (HFpEF) ejection fraction and (2) the role of exercise as treatment of SMM in these HF-related phenotypes. RECENT FINDINGS: The recent literature showed two main phenotypes of heart failure (HF): (1) HFrEF primarily due to a systolic dysfunction of the left ventricle and (2) HFpEF, mainly related to a diastolic dysfunction. Exercise intolerance is one of most disabling symptoms of HF and it is shown that persists after the normalization of the central hemodynamic impairments by therapy and/or cardiac surgery including heart transplant. A specific skeletal muscle myopathy (SMM) has been defined as one of the main causes of exercise intolerance in HF. The SMM has been well described in the last 20 years in the HFrEF; on the contrary, few studies are available in HFpEF. Recent evidences have revealed that exercise training counteracts HF-related SMM and in turn ameliorates exercise intolerance
Impact of Clinical and Quality of Life Outcomes of Long-Stay ICU Survivors Recovering From Rehabilitation on Caregivers' Burden
No full textThe objective of this work was to evaluate the time course of clinical and health-related quality of life outcomes of long-stay ICU survivors' and caregivers' burden
A Pulmonary Rehabilitation Decisional Score to Define Priority Access for COPD Patients
Full text linkThis retrospective study aimed to evaluate, through an ad hoc 17-item tool, the Pulmonary Rehabilitation Decisional Score (PRDS), the priority access to PR prescription by respiratory specialists. The PRDS, scoring functional, clinical, disability, frailty, and participation parameters from 0 = low priority to 34 = very high priority for PR access, was retrospectively calculated on 124 specialist reports sent to the GP of subjects (aged 71 ± 11 years, FEV1% 51 ± 17) consecutively admitted to our respiratory outpatient clinic. From the specialist's report the final subject's allocation could be low priority (LP) (>60 days), high priority (HP) (30-60 days), or very high priority (VHP) (<30 days) to rehabilitation. The PRDS calculation showed scores significantly higher in VHP versus LP (p < 0.001) and significantly different between HP and VHP (p < 0.001). Comparing the specialist's allocation decision and priority choice based on PRDS cut-offs, PR prescription was significantly more appropriate in VHP than in HP (p = 0.016). Specialists underprescribed PR in 49% of LP cases and overprescribed it in 46% and 30% of the HP and VHP prescriptions, respectively. A multicomprehensive score is feasible being useful for staging the clinical priorities for PR prescription and facilitating sustainability of the health system
A two-year longitudinal study on strain and needs in caregivers of advanced ALS patients
No full textOur objective was to explore strain and needs in caregivers of advanced ALS patients and correlate this burden with patient's clinical condition and caregiver's sociodemographic status. Fifty-eight caregivers completed the Family Strain Questionnaire-short form (FSQ-SF) and Caregiver Needs Assessment (CNA) during patients' hospitalization (T0); 39 caregivers were reassessed at 6-12 months (T1) and 13 caregivers at 18-24 months (T2) follow-up. FSQ-SF and CNA total scores (CNA-T), including the CNA subscores 'Emotional/Social Support Needs' (CNA-E) and 'Information/Communication Needs' (CNA-I), were compared to patients' clinical condition (measured by ALSFRS-R and FVC %) and caregivers' sociodemographic status. Results showed that high strain level was found in 80% of caregivers and persisted over time. At T0, CNA-T was moderate and was not correlated to site of ALS onset, patients' clinical variables, or caregiver's sociodemographic characteristics; CNA-I subscore was significantly correlated to bulbar onset. CNA-T and CNA-I were significantly reduced at T1 (both, p < 0.01). Caregivers' parental relationship to patient (filial) and working status influenced caregivers' needs. After a longer follow-up (T2), CNA-E significantly decreased vs. T0 score (p < 0.02). In conclusion, over time, caregivers of advanced ALS patients show persisting high strain while needs decline, although the level still remains high. Further studies are needed to propose the most appropriate support
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
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