1,721,009 research outputs found
RELIABILITY ASSESSMENT OF RC COLUMN UNDER STOCHASTIC STRESS
No full textThe reliability of a short reinforced concrete (RC) column subject to various loads is assessed. The loads yield a two-dimensional stress, axial force N and bending moment M. Methods for solving such kind of problems are reviewed:
Monte Carlo simulation is proved to be suitable. With reference to the lower-end section of the column, the point Ns, Ms in the plane N, M represents the stress:
the minimum distance of this point from the boundary of the resisting domain of the section is assumed as a reliability measure. Using Monte Carlo simulation, large samples are constructed for the minimum distance. The resisting domain and the point Ns, Ms are random quantities; the latter depends on the applied loads, that are dead, snow, and wind load. Snow and wind loads are stochastic processes and
are schematized as filtered Poisson processes. Examining the samples, the cumulative distribution function (CDF) of the distance is found by statistical methods.
The value of the CDF in zero gives the probability of failure (Pf). Pf is about 10-6
E-Commerce or S-Commerce? a managerial perspective on website design features
No full textE-commerce has rapidly evolved in the last decade. Using Web 2.0 and online social media, many e-tailers are transforming the ways in which they are building relationships with customers. In this environment, social commerce has the potential to significantly enhance the firm competitive advantage by having a positive impact
especially on customer relationships and on revenue growth. With the emerging popularity and rapid growth of social commerce, our research aims to exploring, from a managerial perspective, the emerging strategies of stailers compared to e-tailers in Italy, pointing out their key design features and their different approaches in this changing environment. The study was carried out through in-depth interviews with digital and e-commerce
managers. The results show that in Italy s-commerce is not so widespread. Furthermore, the few s-tailers are trying to interact and assist consumers in their buying behavior through social activities and the so called Web 2.0 application
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
The open innovation journey along heterogeneous modes of knowledge-intensive marketing collaborations: a cross-sectional study of innovative firms in Europe
No full textPurpose: Previous research focused on open innovation (OI) suggests that enterprises benefit from adopting the journey; however, the relationship among OI, marketing journey and knowledge-intensive innovation marketing activities (KIIMA) remains unclear. The present study proposes a conceptual model of the marketing journey linking heterogeneous modes of marketing collaboration to knowledge-intensive activities. Design/methodology/approach: The conceptual model was tested via ordinary least squares (OLS) linear regression based on a sample of data drawn from the Eurostat database. Findings: The results indicate that strategies are a robust proxy for evaluating KIIMA, and partnerships, heterogeneous sources of knowledge and different marketing modes for collaboration among European knowledge-intensive firms are core antecedents of KIIMA, such as new-product development and marketing innovation, as well as firms' sustainable competitive advantage. Originality/value: This study fills the gap by tracking the role of the journey within marketing collaborations on KIIMA, and it intervenes in the debate about interactive marketing innovation mechanisms. The study contributes to OI, knowledge management and the marketing literature by identifying the heterogeneous modes for marketing collaborations under which the marketing journey enhances knowledge-intensive activities such as those for marketing innovation
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
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
Does the use of social media affect customer relationship performance? Evidences from Italy
No full textThe study investigates how social media information generation, internal information sharing and responsiveness affect the impact of the use of social media on customer relationship performance (CRP). 180 valid and complete questionnaires were collected from managers of firms operating in Italy. Results obtained from structural equation modeling analysis show that social media information generation
and social media responsiveness have a significant and positive effect on the impact of social media on CRP (evaluated by managers). Moreover, internal information sharing does not directly affect CRP, but its effect turns out to be mediated by responsiveness
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