130,562 research outputs found
Le emissioni di CO2eq provocate dalla pubblicazione di un libro. La compensazione attraverso la scelta delle specie arboree idonee
No full textDa quanto emerge dall’ultimo rapporto sul clima effettuato dall’IPCC (Intergovernmental Panel on Climate Change) nel 2014, l’influenza dell’uomo sul cambiamento climatico è evidente, e le concentrazioni di gas serra attuali sono senza precedenti, almeno negli ultimi 800.000 anni. Con una temperatura globale superiore di 0,97°C alla media (considerando sia la temperatura terrestre che quella ocenica), i primi dieci mesi del 2016 (l'anno più caldo degli ultimi 137 anni) sono da primato, in confronto ai +0,87°C dei primi dieci mesi del 2015. Mai, almeno nei tempi recenti, una simile variazione è avvenuta in così breve tempo. E nessuno dei meccanismi naturali sembra in grado di spiegare un simile riscaldamento (Greenpeace).
Abbiamo, però, la possibilità di conoscere ed evitare tali impatti e, se proprio non ci riusciamo, possiamo mitigarli o, infine, compensarli. Questo lavoro svolto sulla compensazione delle emissioni prodotte per la stampa di un libro, è un esempio di come si può agire su piccola scala e con effetti positivi sul territorio
È legittima la revoca dell'incarico di Direttore amministrativo aziendale in mancanza dei requisiti soggettivi richiesti dalla legge
No full textLa sentenza annotata tratta la questione giuridica relativa alla sussistenza dei requisitivi soggettivi, previsti dall’art. 3 del D. Lgs. n. 502 del 1992 s.m.i, per la legittimità della qualifica di Direttore amministrativo. Infatti, la normativa disciplinante la figura del Direttore amministrativo ha subito delle modifiche e delle integrazioni, che hanno trovato il loro culmine nella specializzazione dei requisiti richiesti per lo svolgimento di tale ruolo apicale. In
particolare, la nota in commento, si concentrerà sull’analisi dell’evoluzione normativa della materia, sull’essenzialità del criterio dell’esperienza sanitaria per la figura del Direttore amministrativo, ai fini della legittimità del contratto stipulato, nonché – infine – sui criteri interpretativi della norma
MeSH term explosion and author rank improve expert recommendations
No full textInformation overload is an often-cited phenomenon that reduces the productivity, efficiency and efficacy of scientists. One challenge for scientists is to find appropriate collaborators in their research. The literature describes various solutions to the problem of expertise location, but most current approaches do not appear to be very suitable for expert recommendations in biomedical research. In this study, we present the development and initial evaluation of a vector space model-based algorithm to calculate researcher similarity using four inputs: 1) MeSH terms of publications; 2) MeSH terms and author rank; 3) exploded MeSH terms; and 4) exploded MeSH terms and author rank. We developed and evaluated the algorithm using a data set of 17,525 authors and their 22,542 papers. On average, our algorithms correctly predicted 2.5 of the top 5/10 coauthors of individual scientists. Exploded MeSH and author rank outperformed all other algorithms in accuracy, followed closely by MeSH and author rank. Our results show that the accuracy of MeSH term-based matching can be enhanced with other metadata such as author rank
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
The Impact of LDL Cholesterol, HDL Cholesterol, Triglycerides, and Vitamin D on Short-Term Implant Survival Rate: A Prospective Observational Study
No full textBackground/Objectives: Dental implant success is influenced by a range of systemic and local factors. Emerging evidence suggests that metabolic markers such as lipid profiles and vitamin D levels may play a role in osseointegration and implant survival. The aim of this study was to evaluate the influence of low-density lipoprotein (LDL) cholesterol, high-density lipoprotein (HDL) cholesterol, triglycerides, and vitamin D levels on the short-term survival rate of dental implants. Materials and Methods: A prospective observational study was conducted on patients receiving dental implants. Preoperative serum levels of LDL, HDL, triglycerides, and vitamin D were recorded. A total of 556 conical, platform-switching implants were placed in 166 patients, smokers and no smokers with mean age 48 years ± 4.7. Implant survival was evaluated from 14 to 21 days after placement, at 6- and at a 12-month follow-up. Spearman’s rank correlation was performed to assess potential correlations between the abovementioned systemic factors and implant loss. Results: Out of 556 implants, 13 (2.34%) were lost from 14 to 21 days after placement, a further two (0.35%) were lost after 6 months after surgery and a further eight (1.44%) were lost 12 months after placement. No significant correlation was found between HDL levels, cholesterol levels, triglyceride levels and implant loss. Spearman’s correlation analysis revealed a strong negative correlation between vitamin D levels and implant loss with no statistical significance. Conclusions: Within the limitations of this study, no statistically significant associations were found between lipid profile markers or vitamin D levels and early dental implant loss. Further large-scale and long-term studies are warranted to validate these findings and better understand the interplay between systemic biochemical markers and implant survival rate
Use of injectable platelet-rich fibrin in the treatment of plasma cell mucositis of the oral cavity refractory to corticosteroid therapy: A case report
No full text
Dispelling the Myths Behind First-author Citation Counts
No full textWe 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
AMPELOGRAPHIC AND MOLECULAR CHARACTERIZATION OF AGLIANICO ACCESSIONS (VITIS VINIFERA L.) COLLECTED IN SOUTHERN-ITALY
No full textTo characterize 31 different Aglianico accessions randomly collected in Southern-Italy, 30
ampelographic descriptors, 13 SSRs and 10 AFLP primer combinations were analysed.
An appreciable variation of ampelographic descriptors was mainly revealed by mature leaf
traits, while very few variations were recorded for shoot and berry traits. Similarly, all SSR loci
revealed molecular monomorphism and AFLPs a very high genetic similarity (Dice Coefficient)
among all the accessions considered.
One of the aim of this study was to clarify the genetic assessment of Aglianico Nero and
Aglianico del Vulture Nero; since they are registered as two different cultivars with distinct varietal
codes at the Italian Register of Grape Varieties. Registered Aglianico Nero and Aglianico del
Vulture Nero were included in the analyses, compared and used as reference material.
Our plants showed that all the accessions tested, independent from the biotype, and the two
registered cultivars, belong to the same genotype, suggesting that, as reported by the Vitis
International Variety Catalogue, a case of synonymy occurred between Aglianico Nero and
Aglianico del Vulture Nero. These cultivars could therefore be considered as a single cultivar.
Moreover, the AFLP data revealed a partial match between morphological and molecular data,
showing that the AFLP molecular method was able to discriminate different accessions belonging
to the same cultivar
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