169,954 research outputs found
La Collezione numismatica dell’Università Cattolica di Milano. Il ‘Fondo Acquisti’,
No full textIl contributo illustra la formazione e la consistenza della collezione numismatica dell'Università Cattolica di Milano, costituita da circa 3.000 esemplari dall'età antica a quella moderna. Viene poi analizzato il lotto costituente della raccolta, ossia il "Fondo Acquisti", composto da 132 monete greche e romane. Di esso si propone per la prima volta il catalogo completo, redatto da studenti dei corsi di Numismatica
Introduzione
No full textL'autore introduce il tema della disciplina degli acquisti di servizi e beni nelle aziende sanitarie, affrontando altresì il tema del federalismo fiscale e dei profili assistenziali del SSN
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
Definizione e implementazione di un software a supporto dell'ufficio acquisti: il caso Piaggio & C.
No full textIl presente lavoro di tesi si basa su un periodo di stage effettuato all’interno dell’ufficio acquisti del gruppo Piaggio & C. all’interno del quale è nata l’esigenza di definire e implementare una applicazione software che fornisca un utile supporto alle principali attività svolte da tale funzione aziendale.
Questo software si pone quindi come strumento di uso quotidiano a supporto sia delle attività operative svolte da buyer sia delle attività decisionali svolte dai manager, permettendo rispettivamente di ridurre quelle attività manuali che potrebbero far sorgere degli errori e problemi, e di fornire una base oggettiva nella definizione della strategia di acquisto volta all’ottenimento di savings.
All’interno di tale contesto il principale obiettivo del mio lavoro è stato quello di individuare i requisiti richiesti dell’utente, analizzare e riscrivere i processi che verranno supportati dal sistema, e successivamente tradurli in specifiche funzionali necessarie per lo sviluppo del software.
L’implementazione di questo software è da considerarsi come il punto di partenza per il miglioramento continuo dei processi svolti dall’ufficio acquisti nell’ottica dell’ottenimento di savings in modo efficace ed efficiente
Mitomycin C in highly myopic eyes - Author reply
No full textOphthalmology. 2005 Feb;112(2):208-18; discussion 219.
Mitomycin C modulation of corneal wound healing after photorefractive keratectomy in highly myopic eyes.
Gambato C, Ghirlando A, Moretto E, Busato F, Midena E.
SourceRefractive Surgery Service and Antimetabolite Therapy Research Unit, Department of Ophthalmology, University of Padova, Padova, Italy.
Abstract
PURPOSE: To evaluate the role of topical mitomycin C in corneal wound healing (CWH) after photorefractive keratectomy (PRK) in highly myopic eyes.
DESIGN: Prospective, double-masked, randomized clinical trial.
PARTICIPANTS: Seventy-two eyes of 36 patients affected by high (>7 diopters) myopia.
METHODS: In each patient, one eye was randomly assigned to PRK with intraoperative topical 0.02% mitomycin C application, and the fellow eye was treated with a placebo. Postoperatively, mitomycin C-treated eyes received artificial tears (3 times daily, tapered in 3 months), whereas the fellow eye was treated with fluorometholone sodium 2% and artificial tears (3 times daily, tapered in 3 months).
MAIN OUTCOME MEASURES: Uncorrected visual acuity (UCVA) and best-corrected visual acuity (BCVA), contrast sensitivity, manifest refraction, and biomicroscopy. Contrast sensitivity was determined using the Pelli-Robson chart. Corneal confocal microscopy documented CWH.
RESULTS: Mean follow-up was 18 months (range, 12-36). No side effects or toxic effects were documented. At 12-month follow-up examination, UCVAs (logarithm of the minimum angle of resolution) were 0.4+/-0.48 and 0.5+/-0.53 (P = .03) in mitomycin C-treated eyes and corticosteroid-treated eyes, respectively. At 1 year, corneal haze developed in 20% of corticosteroid-treated eyes, versus 0% of mitomycin C-treated eyes. At 12, 24, and 36 months, corneal confocal microscopy showed activated keratocytes and extracellular matrix significantly more evident in untreated eyes (Ps = 0.004, 0.024, and 0.046, respectively).
CONCLUSION: Topical intraoperative application of 0.02% mitomycin C can reduce haze formation in highly myopic eyes undergoing PRK.
Comment in
Ophthalmology. 2006 Feb;113(2):357; author reply 357-8
Costantino e il divieto per gli 'administratores' di procedere ad acquisti
No full textIl saggio esamina la normativa tardoantica in tema di divieto per i pubblici 'administratores' di ricevere donazioni e di procedere ad acquisti nelle province in cui svolgono le loro funzioni. In particolare è oggetto di analisi la legislazione costantiniana in merito, con precipuo riferimento a CTh. 8.15.1; CTh. 8.1.4+8.15.1 e C. 2.19(20).11
In the search for the low-complexity sequences in prokaryotic and eukaryotic genomes: how to derive a coherent picture from global and local entropy measures
No full textWe investigate on a possible way to connect the presence of low-complexity sequences (LCS) in DNA genomes and the non-stationary properties of base correlations. Under the hypothesis that these variations signal a change in the DNA function, we use a new technique, called non-stationarity entropic index (NSEI) method, and we prove that this technique is an efficient way to detect functional changes with respect to a random baseline. The remarkable aspect is that NSEI does not imply any training data or fitting parameter, the only arbitrarity being the choice of a marker in the sequence. We make this choice on the basis of biological information about LCS distributions in genomes. We show that there exists a correlation between changing the amount in LCS and the ratio of long- to short-range correlation. (C) 2003 Elsevier Ltd. All rights reserved
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
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