1,720,959 research outputs found
Financial/Technical Analysis about Italian “IV Conto Energia” for Photovoltaic Energy: a Case Study
No full textIn this paper the authors analyse the Italian “IV Conto Energia” for the Photovoltaic in the light of the Ministerial Decree of 05th may 2011. In the first part of the paper the technical aspects of ”Conto Energia” are dealt with, highlighting the major changes with respect to the past. The second part of the paper shows a financial analysis of an investment project for a photovoltaic 2kWp plant on a building. The authors consider cash inflows and outflows and they evaluate the discounted value of these flows at the plant commissioning date. The actual return on investment is therefore calculated according to the elementary principles of financial equivalence. The analysis highlights the critical consequences of the proposed cuts to incentives that will slash the return on investment by 60% as from 2012 compared to 2011
A Cluster Analysis of the Italian Electricity Day-Ahead-Market
No full textThe last two decades present a wave of deregulation and privatization of electricity industries in several nations including U.S., U.K., Spain, Norway and Italy. This process started in Italy in 1992 ended in 2007 when the Electricity Market has been created. Competition in the production and sale has become focal in political debates related to electricity (Hunt). The Italian Power Exchange was born as a consequence of Bersani's law dated 16th march 1999; starting from the following year, customers had the possibility of stipulating bilateral contracts directly with freely selected providers. Just after the year 2004 an Electricity Exchange has been created, it was committed to ``Gestore del Mercato Elettrico'' (GME). In this paper we consider time series of prices in Day-Ahead Market(MGP) for each hour of the next day in the year 2009. In this market, GME accepts Offers/Bids by Merit Order, and accepted supply offers are remunerated at the Zonal Clearing Price (one price for each zone). Accepted demand bids are remunerated at the National Single Price (PUN). Italy is divided into 18 zones. We consider cross analysis of prices, where zones have been classified according to a suitable metric based on the correlation among them. By mean of a Linkage Algorithm an interesting cluster structure is obtained; we show the presence of some very close (in terms of correlation) groups and we study the evolution of cluster structure as a function of distance. The last result suggests to reduce the zonal prices to only three main groups in order to reduce the costs of the auction mechanism since it has been shown (Grilli) that the structural problems in terms of production do not allow the Deregulated Italian Electricity Market (also supported by any kind of auction model) to be efficient and, on the contrary, it appears useless and also costly
Neural Networks to Predict Financial Time Series in a Minority Game Context
Full text linkIn this paper we consider financial time series from U.S. Fixed Income Market, S&P500, Exchange Market and Oil Market. It is well known that financial time series reveal some anomalies as regards the Efficient Market Hypotesis and some scaling behavior is evident such as fat tails and clustered volatility. This suggests to consider financial time serie as "pseudo"-random time series. For this kind of time series the power of prediction of neural networks has been shown to be appreciable. We first consider the financial time serie from the Minority Game point of view and than we apply a neural network with learning algorithm in order to analyze its prediction power. We show that Fixed Income Market presents many differences from other markets in terms of predictability as a measure of market efficiency.Minority Game, Learning Algorithms, Neural Networks, Financial Time Series, Efficient Market Hypotesis
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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe 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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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