Search results for "Olio"
showing 10 items of 630 documents
ALTERAZIONI DEL RECETTORE OCULARE E COMPENSI DELLA COLONNA CERVICO-DORSALE: PARAMETRI STABILOMETRICI
2009
Scopo dello studio è stato quello di analizzare la relazione tra atteggiamento scoliotico dorsale e difetti di convergenza oculare. In 40 soggetti giovani adolescenti maschi di età compresa tra 10 e 12 anni è stata eseguita una valutazione delle curve rachidee con scoliosometro ed un esame stabilometrico mediante piattaforma Baropodometrica Elettronica Modulare “Diagnostic Support”, da cui sono stati ricavati la velocità di variazione, la deviazione media coronale (x-medio), la deviazione media sagittale (y-medio) e la superficie e lunghezza dello statokinesigramma. Inoltre, per l’analisi della funzionalità del recettore oculare, sono stati effettuati il test di convergenza oculare e il cov…
Effects of Schroth method and core stabilization exercises on idiopathic scoliosis: a systematic review and meta-analysis.
2022
Abstract Purpose Conservative approaches such as Schroth exercises and core stabilization exercises showed effective results in the treatment of idiopathic scoliosis. This study aimed to critically evaluate the magnitude effect of Schroth and core stabilization exercises using a systematic review and meta-analysis. Methods This study has been developed in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) Statement. The following three databases were searched for articles collection: Web of Science, PubMed, and Google Scholar. The key search terms were: Schroth exercise, core exercise, idiopathic scoliosis, Cobb angle, angle of trunk rotation, an…
Risk Management for Sustainable Sovereign Debt Financing
2021
We model sovereign debt sustainability with optimal financing decisions under macroeconomic, financial, and fiscal uncertainty, with endogenous risk and term premia. Using a coherent risk measure we trade-off debt stock and flow risks subject to sustainability constraints. We optimize static and dynamic financing strategies and demonstrate economically significant savings from optimal financing compared with simple rules and consols, and find that optimizing the trade-offs can be critical for sustainability. The model quantifies minimum refinancing risk and maximum rate of debt reduction that a sovereign can achieve given its economic fundamentals, and an extension identifies optimal timing…
CVC AND INNOVATION PERFORMANCE: THE EFFECT OF TECHNOLOGICAL DISTANCE WITH STARTUPS AND COINVESTORS
2018
Firms are increasingly opening their boundaries by engaging in corporate venture capital (CVC) programs as potential gateway into knowledge and technologies of innovative startups. By investing in promising startups across diverse industries with different technological knowledge from the knowledge base of the investing corporate, CVC programs constitute a vehicle for corporates to both exploit and explore innovation opportunities. We first examine the relationship between more explorative CVC investments portfolio and the innovation performance of the corporate. Then, we argue that when syndicating the CVC investments with a co-investor, the portfolio of syndication partners may affect the…
Information and hierarchical structure in financial markets
1999
I investigate the information content present in the time series of stock prices of a portfolio of stocks traded in a financial market. By investigating the correlation coefficient between pairs of stocks I provide a working definition of a generalized distance between the stocks of the portfolio. This generalized distance is used to obtain an ultrametric distance matrix between the stocks. The ultrametric structure of the portfolio investigated has associated a taxonomy which is meaningful from an economic point of view.
Portfolio diversification in the sovereign credit swap markets
2018
We develop models for portfolio diversification in the sovereign credit default swaps (CDS) markets and show that, despite literature findings that sovereign CDS spreads are affected by global factors, there is sufficient idiosyncratic risk to be diversified. However, we identify regime switching in the times series of CDS spreads and spread returns, and the optimal diversified strategies can be regime dependent. The developed models trade off the CVaR risk measure against expected return, consistently with the statistical properties of spreads. We consider three investment strategies suited for different CDS market participants: for investors with long positions, speculators that hold unco…
Predicting Cryptocurrency Defaults
2019
We examine all available 146 Proof-of-Work based cryptocurrencies that started trading prior to the end of 2014 and track their performance until December 2018. We find that about 60% of those cryptocurrencies were eventually in default. The substantial sums of money involved mean those bankruptcies will have an enormous societal impact. Employing cryptocurrency-specific data, we estimate a model based on linear discriminant analysis to predict such defaults. Our model is capable of explaining 87% of cryptocurrency bankruptcies after only one month of trading and could serve as a screening tool for investors keen to boost overall portfolio performance and avoid investing in unreliable crypt…
Cryptocurrency as an Investment Instrument in a Modern Financial Market
2019
This paper considers the development of attractive strategies featuring cryptocurrency assets, considering their costs and potential risks. The object of analysis in this paper is cryptocurren- cy as an investment instrument. The main hypothesis of the research is that modern portfolio theory can be applied to cryptocurrency investments to design an investment portfolio with appropriate risk and profitability characteristics. The authors of the paper: (i) place crypto- currencies in the context of modern financial market and financial technology development; (ii) develop assessment criteria for determining attractiveness of individual cryptocurrencies; and (iii) develop recommendations for …
Speculation and Lottery-Like Demand in Cryptocurrency Markets
2020
This is the first paper that explores lottery-like demand in cryptocurrency markets. Since recent research provides evidence that cryptocurrency returns are rather short-memory processes in their nature, we modify Bali et al.’s (2011, 2017) MAX measure and employ a weekly forecast horizon and last week’s daily log-returns for calculating the metric for our portfolio sorts. From an econometric point of view, this study proposes statistical tests that are robust to unknown dynamic dependency structures in the cryptocurrency data. Our results show that average raw and risk adjusted return differences between cryptocurrencies in the lowest and highest MAX deciles exceed 1.50% per week. These re…
A Holonic Approach to Shakespeare: The Digital Reference System (DRS)
2012
Prefatory RemarksWhen hypertext was made available on the Internet after 1994 it shaped the concepts of public domain and free access. The web server and browsing system that Tim Berners-Lee and Robert Cailliau designed, determined the future digital, editorial and cultural developments for traditional audiences and digital natives alike. They quickly became the generalized interface tools and thus contributed to today's editorial standards. As they helped to create this innovative environment called the Internet, they also helped to establish many standards such as URL, URI, HTTP HTML or XML, which provided interoperability amongst different platforms and allowed internationalization.Shake…