1,720,958 research outputs found
New findings reveal that the Middle Triassic ichthyosaur Mixosaurus cornalianus is the oldest amniote with a dorsal fin
Get PDFTwo excellently preserved specimens of Mixosaurus cornalianus from the Anisian layers of the Middle Triassic
Formazione di Besano, with soft parts associated with well-articulated skeletal elements, revealed the presence in this
species of a dorsal fin and of a well-developed, triangular dorsal lobe of the caudal fin, both stiffened by an array of
fibre bundles, as in Jurassic fast-swimming ichthyosaurs. This finding testifies that efficient swimming exaptations were
already present in some Middle Triassic ichthyosaurs. Mixosaurus is then the oldest amniote so far known that developed
a dorsal fin. The preservation of the fin shapes, scaleless skin, and three-dimensional dermal fibres is remarkable,
allowing observation of their microstructure, and ruling out any artefactual interpretation. Stomach contents indicate
that both specimens preyed upon cephalopods and small fishes. An internal organ, possibly a tract of the intestine, is also
preserved in one specimen, which represents the first documented case in the ichthyosaurs of the Besano Formation, and
a rarity in the fossil record of the clade
Modern humans above the tre-line during MIS2. Report from a Gravettian site at the Appennine watershed, Italy.
No full textThe impact of telemedicine on pediatric type 1 diabetes management: benefits, challenges, and future directions
No full textTelemedicine (TM) has emerged as a valuable tool in managing pediatric type 1 diabetes (T1D), particularly during the COVID-19 pandemic when traditional in-person visits were limited. This narrative review examines the impact of TM on patient-provider relationships, glycemic control, and overall diabetes management in children and adolescents with T1D. Studies consistently demonstrate high levels of patient and provider satisfaction with TM, citing increased consultation frequency, reduced travel burdens, and lower associated costs. However, results regarding the effect of TM on glycemic control, as measured by HbA1c levels, are inconsistent. Some studies show significant reductions in HbA1c levels with TM use, while others report outcomes comparable to or less effective than traditional care. The effectiveness of TM also appears to be influenced by the concurrent use of advanced diabetes technologies, such as continuous glucose monitors and automated insulin delivery systems. Furthermore, TM’s impact on quality of life and other clinical outcomes beyond glucose management remains underexplored. Methodological limitations, including inconsistent randomization strategies and lack of long-term follow-up, hinder definitive conclusions. Despite these uncertainties, TM offers several advantages, such as improved accessibility and patient engagement, which may justify its broader implementation. Future research should focus on optimizing TM approaches to enhance glycemic control and quality of life, identifying the most effective strategies for specific patient groups, and addressing technological and economic barriers. This review highlights the need for comprehensive, long-term studies to fully understand TM’s potential in pediatric T1D management and its integration into standard care practices
Telemedicine for Managing Type 1 Diabetes in Children and Adolescents Before and After the COVID-19 Pandemic
No full textThe COVID-19 pandemic has catalyzed the rapid expansion of telemedicine for managing chronic conditions such as type 1 diabetes (T1D) in children and adolescents. This narrative review aims to explore the role of telemedicine in pediatric T1D management by comparing its use before and after the pandemic. We conducted a comprehensive literature review covering studies published between 2000 and 2024, focusing on telemedicine applications in pediatric T1D care. The review includes clinical trials, systematic reviews, and observational studies examining telemedicine’s impact on glycemic control, patient satisfaction, and healthcare delivery. Results reveal that telemedicine has enhanced access to care, improved glycated hemoglobin (HbA1c) levels, and reduced diabetic ketoacidosis and hypoglycemic events. Patients and caregivers expressed high satisfaction, especially when using continuous glucose monitoring and insulin pump technologies integrated with telemedicine platforms. However, challenges such as digital literacy gaps, variability in healthcare provider training, and logistical issues like reimbursement policies persist. The pandemic highlighted the potential of telemedicine to supplement traditional in-person care, showing promise in enhancing patient outcomes and reducing healthcare burdens. Further research is needed to optimize telemedicine models for T1D, addressing barriers to implementation and exploring its long-term cost-effectiveness. This review underscores telemedicine’s evolving role as a complementary approach in managing pediatric T1D, advocating for the development of standardized care protocols to fully integrate digital health solutions into routine clinical practice
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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