1,720,976 research outputs found
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
Gas Chromatography analysis with olfactometric detection (GC-O): an innovative approach for chemical characterization of odor active Volatile Organic Compounds (VOCs) emitted from a consumer product
No full textThe gas chromatography-olfactometry (GC-O) methodology couples traditional gas chromatographic analysis with sensory detection in order to identify odor active compounds in complex mixtures. Volatile Organic Compounds (VOCs) emitted from materials and consumer products can affect indoor air quality (IAQ) in terms of odor annoyance and other adverse effects on human health. Hence, the main purpose of the present paper was to recognize the odor active VOCs emitted by a specific consumer product and responsible of the odor annoyance perceived, performing head-space experiments followed by GC/MS-O analysis both at ambient temperature and during heating (condition of use). Ten odor active VOCs belonging to different chemical classes were detected; Aromatic Hydrocarbons (Benzene, Toluene, m/p-Xilene), Phenols (Phenol), Aldehydes (Benzaldehyde, Nonanale), Chlorinated Aromatic Hydrocarbons (Chlorobenzene, 1,4-Dichlorobenzene), Polycyclic Aromatic Hydrocarbons (Naphtalene) and Anhydrides (Phtalic Anhydride). Naphthalene was recognized as the organic compound that mainly contributed to the overall odor perceived. Moreover, it was observed that the product’s heating resulted in an increasing of VOCs emission and in odor perception. Experimental data obtained highlighted the potentialities of GC/MS-O methodological approach to identify off-flavors deriving from materials and to provide useful indications to manufacturers to improve the acceptability of odorous emissions
A GIS for Atmospheric Emission Management in South of Italy
No full textEmission inventories are useful tools in air quality management policies. In the framework of Apulia Region (South of Italy) inventory, the Territorial Emission Cadastre (CET) was developed. CET stores the huge amount of data concerning industrial plants. In order to easily interact with input data and analyze them, a graphical user interface that includes a GIS (Geographical Information System) component was integrated (CETGIS). This paper focuses on the development of CETGIS and analysis possibilities provided by GIS technology, which allow decision makers to monitor the state of air quality and to evaluate the targets to be achieved
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
A portable sensor system for air pollution monitoring and malodours olfactometric control
No full textA portable sensor-system based on solid-state gas sensors has been designed and implemented as proof-of-concept for environmental air-monitoring applications and malodours olfactometric control. Commercial gas sensors (metal-oxides, n-type) and nanotechnology sensors (carbon nanotubes, p-type) are arranged in a configuration of array for multisensing and multiparameter devices. Wireless sensors at low-cost are integrated to implement a portable and mobile node, that can be used as early-detection system in a distributed sensor network. Real-time and continuous monitoring of hazardous air-contaminants (e.g., NO 2, CO, SO 2, BTEX, etc.) has been performed by in-field measurements. Moreover, monitoring of landfill gas generated by fermentation of wastes in a municipal site has been carried out by the portable sensor-system. Also, it was demonstrated that the sensor-system is able to assess the malodours emitted from a municipal waste site and remarkably compared to the olfactometry method based on a trained test panel. © 2012 Springer Science+Business Media, LLC
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
Development of a tool for industrial atmospheric emission management in the Apulia region
No full textAtmospheric emission inventories are useful tools to support informed decision making in air quality management. In the framework of Apulia Region emission inventory, a tool for the industrial atmospheric emission management called Territorial Emissions Cadastre (CET) was developed. CET is a Web-based system able to store all data related to the industrial plants and to perform spatial queries; its components are used for synchronizing, exporting and querying the underlined database. CET also enables access to information that is useful to support air quality monitoring experts in their decision-making process. An innovative feature of CET is CETGE. It allows the users to visualize the industrial plants and the associated emissions in Google Earth® which provides an effective tool to display the most relevant industrial emission sources on a Regional area view. CETGE can be used by the stakeholders to evaluate and present alternative solutions for areas characterized by high impact emission sources
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