1,721,896 research outputs found
The relationship between convention hosts and professional conference organizers
No full textIt is common for host organizations that operate conventions to employ professional conference organizers (PCOs) to perform a variety of professional services relating to the organization, management and operation of the event. As such, a productive relationship between the host and PCO is essential to the successful operation of the event. Yet, the relationship is often strained as the host organization may feel uncertain about the selection of the PCO or may have reservations about its performance. Such an arrangement represents a classic principle-agent relationship that can be examined through agency theory. This study examines this relationship from the perspective of the host organization. It found that hosts do express concerns about adverse selection and moral hazard, but that these concerns can be mitigated by a series of pre- and post-contract awarding control measures.School of Hotel and Tourism Managemen
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
Towards Scalable Security of Real-time Applications: A Formally Certified Approach
No full textIn this paper, we present our ongoing work to develop an efficient and scalable verification method to achieve runtime security of real-time applications with strict performance requirements. The method allows to specify (functional and non-functional) behaviour of a real-time application and a set of known attacks/threats. The challenge here is to prove that the runtime application execution is at the same time (i) correct w.r.t. the functional specification and (ii) protected against the specified set of attacks, without violating any non-functional specification (e.g., real-time performance). To address the challenge, first we classify the set of attacks into computational, data integrity and communication attacks. Second, we decompose each class into its declarative properties and definitive properties. A declarative property specifies an attack as a one big-step relation between initial and final state without considering intermediate states, while a definitive property specifies an attack as a composition of many small-step relations considering all intermediate states between initial and final state. Semantically, the declarative property of an attack is equivalent to its corresponding definitive property. Based on the decomposition and the adequate specification of underlying runtime environment (e.g., compiler, processor and operating system), we prove rigorously that the application execution in a particular runtime environment is protected against declarative properties without violating runtime performance specification of the application. Furthermore, from the specification, we generate a security monitor that assures that the application execution is secure against each class of attacks at runtime without hindering real-time performance of the application
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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