1,720,985 research outputs found
Biostabilization of municipal solid waste
No full textA mechanical-biological process for municipal solid waste (MSW) treatment was monitored for one year. Mechanical pre-treatment provided two fractions. The oversize fraction (Ø>50 mm) (yield of 600 gkg-1ww) (46 Mgday-1) was used for refuse derived fuel production, after undergoing a mechanical refining processes, because of low moisture content (200-250 gkg-1) and high calorific value (2500-2800 kcalkgww -1). The undersize fraction (Ø<50 mm) (yield 400 gkg -1ww) (30 Mgday-1) contained about 800 gkg-1 of the MSW organic matter. This fraction was biologically treated using an aerobic process with an organic waste fraction from separate collection (77 Mgday -1) and recycled stabilized material (62 Mgday-1) obtained from end-product sieve (Ø<20 mm) used as bulking agent. A retention time of three weeks was sufficient to obtain stabilized products in agreement with up-dated rules of the Lombardy Region (North Italy) regarding biostabilization and composting processes. Dynamic Respiration Index (DRI), such as required by both Lombardy Region rules and suggested by the European Community, was chosen in preference to other indices in order to assess the degree of biological stability of the end products. A mean DRI value of 1164 mg O2 kgSV-1h-1 was obtained and is in agreement with the proposed limit of 1000±200 mg O2 kgSV -1h-1. Self-heating test, potential biogas production and fermentable volatile solids were also used as parameters to describe the potential impact of treated waste, providing further useful information. Nevertheless, all of these methods revealed analytical or interpretative limits. A complete mass balance of the biological treatment section showed that, from a net input of 107 Mgday-1, only 250 gkg-1 (27 Mgday -1) of the waste needed to be landfilled, with 750 gkg-1 (80 Mgday-1) being lost as CO2 and H2O
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
L'offerta di servizi da parte delle imprese manifatturiere in ambito internazionale: il caso del distretto nautico del Sebino
No full textThe work aims to investigate how the shift towards a service economy is changing the way manufacturers compete and behave, particularly in the foreign markets. Manufacturing firms seeking to diversify their core business by adding services to bolster the product offering soon understand how different it is to develop and provide services compared with exclusively the manufacture and marketing of products. Diversification into services poses new challenges that cannot be mastered using the traditional, manufacturing-oriented management tools. Further, it is one thing to effectively integrate products and services for the domestic market, which itself presents new hurdles, but a completely different ball game when companies that serve the international markets attempt to expand their offering to meet the service needs of foreign clients. What kind of difficulties can the companies expect to come up against? How does a product-related strategy differ from a services-related strategy in the international arena? After reviewing the proposals advanced in the relevant literature, we conducted an empirical analysis of the strategies adopted by a sample basket of Italian manufacturing firms in the Italian leisure boats industry.Servizi post-vendita, internazionalizzazione, integrazione prodotto-servizio, nautica da diporto
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
- …
