1,721,045 research outputs found
SmartSocialMarket: A Social Commerce Architecture
Full text linkThe evolution of the approach users have with the World Wide Web-particularly towards social media-has led to the need of e-commerce platforms aimed at user interaction. Offering a service focussing only on online shopping is no longer satisfactory. In order to provide a successful user-seller interaction, further Web 2.0 tools need to be offered. This development of electronic shopping-which provides new business opportunities-is called social commerce. This paper aims at describing the SmartSocialMarket architecture, which is based on e-commerce components and, at an upper level, on social components. Social components allow for the provision of tools that can improve the user interaction within the platform, and can also offer new market opportunities to sellers
INTERACTION COMMERCE, A TECHNOLOGICAL ARCHITECTURE FOCUSED ON RECOMMENDER SYSTEM
No full textThis paper aims at introducing a type of social commerce architecture
to which the name Interaction Commerce has been given. First, a
global description of the main macro-components forming the structure of this
architecture is provided. Such components also take care of managing
e-commerce activities and social relationships within the architecture.
Second, the focus is set on the analysis of the single components that are
key to the social aspects of the architecture. A special chapter is then entirely
focussed on a topic that is considered extremely important by the entire
research community, i.e., recommender systems. After providing
a general introduction on the topic, the two most common recommendation
approaches are analyzed and compared. These are the content-based
approach and the collaborative filtering approach. The analysis has shown
how all recommender systems are threatened by the cold-start problem.
Studying recommender systems has allowed for their implementation in the
architecture, which now has a new “social” approach that is able to solve the
new user cold-start problem. An architecture prototype was developed and
tested in order to be validated
Social Commerce: A Literature Review
Full text linkThe increasing popularity of social networking is providing new opportunities for businesses in electronic commerce. It is evolving in order to adopt Web 2.0 capabilities to support online customer interactions and achieve greater economic value. This trend is referred to as social commerce. This study offers the result of a Systematic Literature Review (SLR) to explain the concept of social commerce. In order to elaborate this article, 64 papers were considered from the main digital libraries that index computer science conferences and journals. Applying a systematic analysis to these papers, it was possible to summarize the existing evidence concerning the social commerce and outline some open challenges
Preliminary Assessment of the Seismic Behaviour of Giotto’s Bell Tower In Florence
No full textThe assessment of the static and dynamic behaviour of historic masonry towers, together with the development of proper preservation strategies, has attracted in recent decades the interest of a plethora of scholars. Most of the studies focus on the assessment of their seismic behaviour since their slenderness exposes them to the dynamic effects induced by medium-to-severe earthquakes.
This paper, which is framed in this background, discusses a preliminary identification of the seismic behaviour of Giotto’s bell tower in Florence, one of the iconic masonry towers ever built in Italy. In the first part of this paper, a summary of the available information on this bell tower is provided. Next, a refined numerical model, built through the finite element technique, and based on a recent laser scanning survey, is reported and employed to investigate its seismic behaviour.
The numerical model accounts for the soil-structure-interaction, and scaled natural accelerograms selected based on the Florence seismic hazard are considered to develop linear and nonlinear time-history analyses. The results allow an initial assessment of the seismic behaviour of Giotto’s bell tower suggesting both future in-depth investigations and analyses, together with proper preservation 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
Concept Design of a Damen Yacht-Support Vessel with the help of Packing
No full textThis thesis discusses the concept development of a 90 meter Yacht Support Vessel (YSV) with the help of TUDelft Ship Synthesis Model (SSM) called packing.Speed, together with a considerable amount of demanding and conflicting characteristics, such as: thecapacity of storing two helicopters and at the same time being able of taking around large and bulky tenders,are crucial aspects of this type of ships. Damen Shipyard, leading this market, collaborated to this study. Inparticular, the object case-study would ideally represent the flag-ship of the gamma for the shipyard, emphasizing and taking to extreme all this type of ship features. In addition, the vessel should provide storagefor spare parts and provisions, accommodations for extra-crew and staff but also have fully dedicated guestareas.This work discusses the aptitude of the packing approach of dealing with this particular ship design problem. The methodology developed by TU Delft can rapidly generate a large and diverse set of thousands ofdifferent feasible low detail ship designs. The dissertation is composed by two main parts: the first one isfocused on using this methodology to develop a diverse design space to explore various possibilities beforeconverging on a selected few to further define later in the thesis. The second part provides the elaboration ofthe most promising design picked up in the first phase.The packing-based ship description consists of five elements (objects, positioning space, overlap rules,design changes, packing process) representing the Ship Synthesis Model (SSM) that together enable the description and parametric variation of a ship during early stage design. By creating multiple feasible designsolutions, the task of the naval architect is focused on analyzing, evaluating and deciding rather than creatingdifferent options. Thus, it is proposed to study the feasibility of multiple different options and, by analyzingthe more relevant conflicts, it will be possible to drive the choice towards the most promising design. In thiswork are highlighted the design decisions undertaken by packing on the options modeled, comments andexplanations are given on the rationale that helped in cutting the design space represented by thousands ofdifferent design concepts. Consequently, it is illustrated how the down-selection from a multitude of optionsto only few solutions was carried out.The most promising design is improved through some of the steps typical of the ship design spiral withthe aim of satisfying the imposed design requirements. Several rounds of the ship design spiral are undergonebringing gradually to the final outcome. These successive steps led to the fulfillment of all the non-negotiablerequirements set in the design brief, successfully developing the 90 meter concept. The description of themain characteristics of the ultimate design closes the second phase of the thesis before conclusions and reflections on the overall project are discussedMarine Technolog
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
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