323,048 research outputs found
Disuguaglianze e potere a Roma
No full textLe mappe della disuguaglianza. Una geografia sociale metropolitana di K. Lelo, S. Monni e F. Tomassi (2019) fornisce un’istantanea di rara efficacia che permette di rappresentare l’attuale situazione sociale ed economica di Roma. Il testo rappresenta un’ottima occasione per riflettere sul tema delle disuguaglianze in ambito urbano. In questo articolo – muovendo dall’analisi di alcuni dei dati presentati nel libro – si offre una chiave di lettura delle disuguaglianze e un’interpretazione delle stesse basata sull’analisi della strategia di accumulazione che si è sviluppata storicamente a Roma
Effect of selenium supplementation on plasma glutathione peroxidase and relationship with inflammatory markers in dairy cows.
No full textThe relationship between plasma glutathione peroxidase (GPX-3), inflammatory markers and oxidative status in plasma was investigated on 40 Italian Friesian dairy cows. The cows were subdivided in 5 groups: S3 and S5 contained Se yeast S. cerevisiae CNCM I-3060 (0.31 and 0.50 mg of total Se/kg DM respectively); N3 and N5 contained sodium selenite (0.31 and 0.50 mg of total Se/kg DM respectively); C as negative control (0.09 mg Se/kg DM). Before the start of the study and after 84, 126, and 140 d, blood samples were collected and plasma analyzed for GPX-3, Se, positive (+APP) and negative (-APP) acute phase proteins, reactive oxygen metabolites (ROM), thiobarbituric acid reactive substances (TBARS) and thiol groups (SHp). Data were processed using mixed procedure for repeated measures, and multiple stepwise regression using GPX-3 as dependent variable. Lower value (n.s.) of GPX-3 was observed in C (263 U/l) vs. organic Se (275 and 282 U/L in S3 and S5, respectively) and inorganic Se (305 and 304 U/L in N3 and N5, respectively). The GPX-3 was positively correlated with +APP (haptoglobin: P<0.001; ceruloplasmin: P<0.001), and negatively with albumin (P<0.001). Positive correlations between GPX-3 and ROM (P<0.001), and negative between GPX-3 and SHp (P<0.001) were observed. The GPX-3 variability was mainly explained (51.2%) by haptoglobin content; conversely the contribute of plasma Se was only 3.7%. A negative relationship between +APP/-APP ratio and SHp as well as between -APP/+APP ratio and TBARS was observed; these relationships were significant only in C, N3 and N5 diets. In conclusion our results highlighted that GPX-3 was greatly affected by inflammatory conditions, and also seem to suggest a lower oxidative stress in relation to the inflammatory conditions in Se yeast cows
Isolation, purification and characterization of a new gum from Acanthophyllum bracteatum roots
No full textA new gum was isolated from the roots of Acanthophyllum bracteatum (ABG) by warm-water extraction. Purification was carried out by barium complexing to give a yield of 12.4% of pure air-dried or 5.8% of freeze-dried gum. The ABG contained 13.2% moisture, 84.3% carbohydrate, 0.9% protein and 1.5% ash. Its mineral content was comparable to commercial hydrocolloids. Monosaccharide analysis by HPLC showed the presence of galactose, glucose, arabinose, rhamnose and uronic acids in the ratio 16.0:7.2:3.0:1.0:3.1 respectively. The viscosity and pH value of 1% ABG solution at 25C were 51.5 mPa s and 6.85 respectively. ABG solutions (5e30 wt%) showed shear-thinning flow behavior at shear rates < 10 s 1. The viscosity decreased as temperature increased, and was highest at the neutral state. ABG had low surface and emulsification properties but moderate foaming capacity and relatively high foaming stability, which suggests that ABG could potentially be used in food systems to improve foaming propertie
Diffusive author(s), cohesive author: Analysis of S/N (1994)
No full textThis study indicates the ways in which various aspects of the author(s) are brought forth in Dumb type’s performance art, the S/N production. Previous research has suggested a non-hierarchical organization of Dumb type and the absence of a “privileged author” in Dumb type’s collaborative work, S/N. However, the results that I have investigated from member’s interviews on the creative process of S/N along with my analysis of the recorded images of S/N, indicate a different aspect of the author(s). First, S/N was created through, so to speak, the collective ideas of the members of Dumb type. Further, S/N has at least nine quotations from previous performances, installations, and printed writings, besides the work-in-progress technique. Explicating one of the “author functions” as given by Michel Foucault, each text has plural subjects of the author. However, it has been revealed from members’ interviews that Teiji Furuhashi had a decision-making role in selecting the members’ ideas within the performance. Since then, S/N has had plural subjects of creation; however, Furuhashi is one of the subjects of creation along with the “privileged author.” S/N has plural authors (diffusive authors) yet at the same time, it has a “privileged author,” Teiji Furuhashi (cohesive author)
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
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
Author's address:
No full textCan archives of audiovisual TV interviews be used to make authors more visible to students, and thereby reduce the learning gap between native and non-native language speakers in college classes? We examined students in a college course who learned about one scholar's ideas through watching an audiovisual TV interview (i.e., visible author format) and about another scholar's ideas through reading a formal text description (i.e., invisible author format). For the invisible author, native language speakers scored significantly higher than the non-native language speakers on a corresponding exam question (i.e., a cognitive measure), generated more words on the exam question (i.e., a motivational measure), and mentioned the author's name more often in answering the exam question (i.e., an affective measure). For the visible author, the groups did not differ on any of these measures. These findings provide evidence for the idea that making the author visible through audiovisual TV interviews can eliminate the learning gap between native and non-native language speakers. 3 Universities around the world serve students who are non-native speakers of th
The vanishing author in computer-generated works: a critical analysis of recent Australian case law
No full textAbstract
The use of software is ubiquitous in the creation of many copyright works, yet the requirement in copyright law that every work have a human author who engages in independent intellectual effort means that its use may prevent copyright subsistence. Several recent Australian cases have refocused attention on authorship as an essential criterion of copyright subsistence, and these cases suggest that much computer-produced output may be authorless and thus lack copyright protection. This article, the first in a two-part series, analyses how each case deals with the question of authorship of computer-produced works and why the use of software diminishes copyright protection for a significant number of computer-generated works. The article critiques the application of conventional notions of human authorship developed in the pre-computer age to modern productions and suggests alternative approaches to authorship that satisfy both the major objectives of copyright policy and the need to adapt to the computer age. The article argues that, without a broader judicial approach to authorship of computer-generated works, Parliament must remedy the lacuna in protection for these ‘authorless’ works. Possible solutions for reform are suggested. In a forthcoming article, the author comprehensively examines those reform proposals
- …
