1,720,975 research outputs found
A modeling and simulation-based methodology to support dynamic negotiation for web service applications
No full text Different negotiation engineering domains require the system designer to tailor the negotiation framework according to the domain under which it will be used. This process of system design is timely consuming when supporting different geographically distributed and dynamic environments. Here we show a methodology to design negotiation systems by integrating domain-dependent message structure ontology with domain-independent marketplace architecture. The methodology gives the system designers a powerful modeling tool that can be used to tailor the framework in order to support different negotiation behaviors under different domains. The system entity structure formalism is used to build the domain-dependent ontology while the finite deterministic discrete event system formalism is used to build the marketplace model. The discrete event system with service oriented architecture simulation environment was employed to demonstrate a proof of concept of applicability to web service domains. </jats:p
Ontology-based marketplace for supporting negotiation in different scientific applications
No full text
Trusted Mediator Agents to Better Manage Complex and Competitive Supply Chains (Extended Abstract)
No full textABSTRACT Competitive markets in supply chains choose not to share their inventory, backlog, and revenue costs and hence global information is not available. In this paper, we propose a new framework for supply chain management based on trusted mediator agents. A mediator agent places an order on behalf of its customer to a corresponding supplier. The agents use local information and apply adaptive heuristic rules in order to enhance the performance of the entire supply chain. We have evaluated our framework through conducting extensive experiments in an agent-based modeling and simulation environment. The results show a consistent improvement in all the cases that were considered in the literature. We show that local information can in fact lead artificial mediator agents to discover effective ordering strategies
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
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