1,721,324 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
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
Designing the Business Model of Herbal Pharmaceutical Knowledge based Companies
Full text linkToday, research has indicated Knowledge based companies as a potential area in promoting knowledge economy, and due to the substantial added-value they make in the knowledge economy of the countries, these companies play a pivotal role in producing national income. Considering the novelty of the field of designing business models for herbal pharmaceutical Knowledge based companies and the importance of these companies among Knowledge based companies on the one hand, and the lack of academic research on exploring these companies on the other hand, the need for a comprehensive business model to help understand the components of herbal pharmaceutical Knowledge based companies seems urgent. This study aimed at identifying and prioritizing the components of business models and also structuring a business model of herbal pharmaceutical Knowledge based companies around these components. The Friedman test was used to prioritize the importance of the components of Knowledge based companies' business models. The statements of the present study's questionnaire were collected from the literature and the experts' opinions, too. Out of the 130 distributed questionnaires, 119 were collected which were analyzed by employing the Cochran test of the SPSS Statistics software. The components of key activities with the mean ranking of 6.76, cost structure with 6.09, and key resources with 6.06 were the most important components and customer relationships with 5.67, value propositions with 5.45, key partnerships with 4.10, distribution channels with 4.04, customer segment with 3.60, and revenue streams with 3.24 were the least important ones.
Research paper
Keywords: Business model, Knowledge based companies, Herbs, Friedman’s test
Reference to this paper should be made as follows: Asadnezhad, M., Hejazi, R., Akbari, M. & Hadizadeh, E. (2017). Designing the Business Model of Herbal Pharmaceutical Knowledge based Companies, Journal of Entrepreneurship, Business and Economics, 5(2), 47–63
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
Microporous Zeolites and Related Nanoporous Materials: Synthesis, Characterization and Applications in Catalysis
Full text linkMicroporous zeolites and nanoporous materials are important from an academic and industrial research perspective. These inorganic materials have found application as catalysts in several industrial processes in oil refinery, petro-chemical reactions, fine chemicals, speciality, drug discovery and pharmaceutical synthesis, exhaust emission control for stationary and mobile engines and industrial wastewater treatment. The reasons for their versatile applications in several industrial processes are their unique properties of microporous zeolites and nanoporous materials such as uniform pores, channel systems, shape selectivity, resistance to coke formation, thermal and hydrothermal stability. Furthermore, the possibility to tune the amount and strength of Brønsted and Lewis acid sites and their crystal size, as well as the possibility of modification with transition and noble metals, are key to their success as efficient, high selectivity and stable catalysts
Microporous and Mesoporous Materials for Catalytic Applications
No full textMicroporous and mesoporous materials are applied in refinery processes for the production of fuel components, petro-chemicals, and fine and speciality chemicals. Furthermore, these catalytic materials are utilized in exhaust gas emission control, water purification, drug delivery, and solutions for environment-related problems. Microporous and mesoporous catalytic materials modified with transition and noble metals are synthesized via evaporation impregnation, deposition precipitation, ion exchange, chemical vapor deposition, and atomic layer deposition. Metal nanoparticle-size distributions, dispersions, metal-support interations, and acid site amounts can be designed by selecting metal modification methods. In-depth physico-chemical characterizations are carried out using nitrogen physisorption for surface area pore volume and pore size distributions, scanning electron microscopy for morphological features, transmision electron microscopy for metal nanoparticle-size distributions, X-ray powder diffraction for structural measurements, and FTIR with pyridine as the probe molecule for Brönsted and Lewis acid site amounts. Microporous and mesoporous materials will be applied to the development of green process technology for the production of renewable energy, bulk chemicals, and fine chemical manufacturing
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