2019
Autores
Almeida, F;
Publicação
JOURNAL OF SCIENCE AND ARTS
Abstract
The Apriori algorithm is considered a classic in the association rules extraction field. This algorithm makes recursive searches in a dataset looking for frequent sets that satisfy given minimum support. Apriori has several properties to optimize its performance, such as reducing the number of generated itemsets and its parallelization by multiple processors. These features have led to the emergence of several studies that present parallel versions of Apriori. However, these proposals do not explore the heterogeneous capabilities of each machine, which causes a significant part of the algorithm's processing time to be spent on I/O processes and not exactly on the execution of the algorithm. In this sense, this study proposes a mathematical modeling of the Apriori algorithm in which heterogeneous machines are considered. The findings identified a better performance of this algorithm when compared to the original and parallel versions of Apriori, but in which all processors are considered homogeneous. The findings reveal the time reducing rate increases with the growth in the number of itemsets and the number of considered processors.
2019
Autores
Lourenço, J; Almeida, F;
Publicação
Impact of Mobile Services on Business Development and E-Commerce
Abstract
M-commerce is afast-growing opportunity and is acting as an innovative lever for achieving the purpose of increasing sales while better interacting with the clients. Simultaneously, several emerging technologies have appeared in the market and promise to change the current m-commerce paradigm. Therefore, this chapter plans to explore a set of new trend technologies that can plan to build a more efficient relation between the consumer and the m-commerce platform. This study conducted surveys with several market players like marketers and IT leaders to understand their point of view, perceive the relevance and impact of these emergent technologies in m-commerce, identify resistance and challenge points to the proposed change, and look how to allow cohabitation between this new e-commerce paradigm and the traditional physical trade. The main novelty of this study is the inclusion of multiple points of view on the evolution of m-commerce which will allow companies and citizens to perceive the impact of emerging technologies in the future of m-commerce. © 2020, IGI Global.
2019
Autores
Almeida, F;
Publicação
International Journal of Systems and Society
Abstract
2019
Autores
Almeida, F; Simões, J;
Publicação
Advances in Marketing, Customer Relationship Management, and E-Services - Advanced Methodologies and Technologies in Digital Marketing and Entrepreneurship
Abstract
2019
Autores
Buzády, Z; Almeida, FL;
Publicação
Informatics
Abstract
2019
Autores
Almeida, F; Simoes, J;
Publicação
E-JOURNAL OF BUSINESS EDUCATION & SCHOLARSHIP OF TEACHING
Abstract
Students can explore playful environments offered by serious games to simulate challenges in the process of launching and managing a start-up, which can improve their strategic planning and management skills. In this sense, this paper identifies and explores the benefits and limitations of the use of serious games in entrepreneurship education. Subsequently, it is discussed how these elements are approached in the context of nine entrepreneurship serious games. The findings indicate that all considered games create an active learning environment, although it is not clear how they can be integrated into a didactical system and how the students' performance could be evaluated and assessed. Additionally, there were also globally identified accessibility, interoperability and usability issues.
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