1,722,178 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
Managing risks in sustainable supply chains
Full text linkPurpose of the paper: The aim of this paper is to discuss the emerging challenges that modern supply chains face from the perspective of sustainability, highlighting the opportunities and the risks that these organizations encounter.
Methodology: The paper is theoretical, and provides an analysis of trends and challenges for sustainable supply chains and the management of related risks, highlighting some gaps in the literature.
Findings: The paper categorizes the priorities for modern sustainable supply chains and provides a clear differentiation between the concept of ‘sustainability risk management’ and the categorization of ‘risks in sustainable supply chains’.
Implications and originality/value of the paper: The paper addresses different gaps in the literature of sustainable supply chains and provides the managers with helpful directions for their supply chain management agenda. In detail, authors identifies trends that seem to make supply chains more vulnerable and exposed to the risk, key risk-related questions for managing sustainable supply chain, suggesting a number of important issues which need to be weighed when supply chain design decisions are taken.
Research limitations: The theoretical approach of the paper can benefit from future in-depth analyses based on case studies
The effects of surface active agents on the behaviour of selected crustaceans
No full textThe effect of surface active agents on behaviour has been examined. The study has investigated two areas in which these chemicals are thought to cause debilitating effects, namely in the animal's general activity,and in its ability to perceive its surroundings.Locomotion was employed as an index of activity in the common shrimp Cran on orangon(Pallas.), and the presence of an oil dispersant BP 110OX was demonstrated to reduce general activity to a level comparable with that caused by prolonged retention in the aquarium. Despite this dampening the animal's reaction to sporadic light stimulus was shown to become more violent when the animal was treated with this dispersant.The ability of certain Crustacea to perceive chemical stimuli was also examined in two bioassays, and was shown to be inhibited by the presence of both dispersants and surfactants.The first bioassay involved the process of mate selection in the amphipod Gammarus duebeni, (Li113eborg). This process is mediated by the production of a pheromone by the female, and its subsequent reception by the male leads to the formation of a precopula pair. The presence of the surfactant TWEEN 80 was shown to inhibit reception of the pheromone and so result in a decreased pairing success.Food sensing ability in Crangon was examined, and found to be significantly reduced by treatment with surface active agents. Results from this bioassay indicate that the effect is concentration dependant and reversible. The conclusions drawn from both bioassays have been included in a discussion of the analogy between the effects of surface active agents and those evident in anesthetics.To further investigate the relationship between the surface active chemical and the receptor membrane, a neurophysic'_:gical study was carried out, employing the sensory nerves supplying tb' last segment of the fourth walking leg of the crab Carcinus maenas(L). This investigation suggested that the partition coefficient of the surfactants between organic and inorganic phases is of considerable importance. Possible mechanisms by which surfactants may interact with, and inhibit the function of chemoreceptive membranes have been discussed with reference to recent membrane models.</p
Logistics networks in Greek Agriculture Economy: applicability of efficient foodservice response
No full textVariations 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
Procopius, πάρεδρος / quaestor, Codex Justinianus, 1.27 and Belisarius’ strategy in the Mediterranean 1 , 2
No full textThis chapter considers sixth-century East Roman strategies in the Western Mediterranean. It suggests that Justinian's overarching objective was an economic strategy, pursued partly by war, to control the trade routes of the Mediterranean. The chapter argues that Procopius was promoted from adviser to senior adviser to Belisarius and that he was involved in the drafting of military correspondence, which was recycled into parts of the C. J. 1.27 and Wars. It also argues that where military correspondence informed both the C. J. 1.27 and Procopius' works, it suggests a link in their geneses. Procopius refers to his own official status and relationship to Belisarius by using terms that he uses for the roles of other officials. Procopius states that Belisarius, magister militum per orientem, was not only the highest ranking general in the empire, but also that he held supreme authority during two western campaigns. Regarding his relationship with Belisarius, there are indirect and direct instances of his involvement and relatively close connection
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
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