1,721,038 research outputs found
Cretaceous paleomagnetic results from Murge (Apulia, southern Italy): tectonic implications
No full textCretaceous paleomagnetic results from Murge (Apulia, southern Italy): tectonic implications
No full textCretaceous paleomagnetic results from Murge (Apulia, southern Italy): tectonic implications
No full textL’indagine di Customer Satisfaction camerale: un caso di studio per una differente prospettiva di analisi
No full textThe Customer Satisfaction Survey for a Chamber of Commerce: a case study for a different perspective of analysis
Objectives
The present paper aims at analysing the Customer Satisfaction Survey
(CSS) dataset of an Italian Chamber of Commerce. This dataset has been collected in years 2006-2007 and previously analysed considering the SERVQUAL method. The idea here is to consider an alternative approach allowing for ordinal qualitative variables.
Methods and Results
The adopted method is a politomic generalization of Rasch model: the Partial Credit Model. The paper focuses on results regarding a single office, but all other analyses confirm these results: the complete analysis
shows that the supplied questionnaire are generally valid identifying some minor issues only.
Conclusions
The paper concludes with some suggestions to improve the quality of the CSS as the reduction of Likert scale levels, the introduction of “extreme” items (allowing for better measures identification), and, last but not least, the necessity of adoption of a better sample selection method
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
Endoscopic third ventriculostomy in previously shunted children: a retrospective study. Reply to Professor Viroj Wiwanitkit MD, Wiwanitkit House, Bangkhae, Bangkok, Thailand
No full textA review of solitary fibrous tumor/hemangiopericytoma tumor and a comparison of risk factors for recurrence, metastases, and death among patients with spinal and intracranial tumors
No full textMeningeal solitary fibrous tumors (SFTs) and hemangiopericytomas (HPCs) had been combined into a single classification until 2016. Recurrence and metastases rates are still understudied, especially for spinal SFT/HPCs. Here, we describe CNS SFT/HPCs and predictors for recurrence, metastases, and death, in spinal and intracranial SFT/HPCs, separately. We collected data from studies with patient-level data available on primary SFT/HPCs from multiple online databases. Clinico-demographic data, surgical outcomes, recurrence, metastases, and death rates were abstracted. We used logistic and Cox regression models to identify predictors for recurrence, metastases, and death for spinal and intracranial SFT/HPCs. Twenty-nine studies (368 patients) were included. Higher histological grade and subtotal resection were associated with recurrence (p values < 0.05), while higher histological grade and recurrence (p values < 0.005) were associated with metastases formation. Time to recurrence (p < 0.005) and metastases (p < 0.001) formation were shorter for spinal SFT/HPCs. Death rates were higher among intracranial SFT/HPC patients (p value = 0.001). Among patients with higher histological grade, rates of metastases formation were different between intracranial and spinal SFT/HPCs. Risk of metastases was higher in the first 5 years from surgery for both intracranial and spinal SFT/HPCs. Meningeal SFT/HPCs patients have high rates of recurrence and metastasis, which occur mostly within the first 5 years after diagnosis. Spinal and intracranial SFT/HPCs show similar behavior, but spinal SFT/HPCs tend to develop metastases and recurrences in a shorter interval of time. Careful follow-up for spinal SFT/HPCs should be considered because spinal cases seem to be slightly more aggressive and require more attention.
Keywords: Hemangiopericytoma metastasis; Meningeal hemangiopericytoma; Meningeal solitary fibrous tumor; Solitary fibrous tumor metastasis; Spinal hemangiopericytoma; Spinal solitary fibrous tumor
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