1,720,982 research outputs found
A System-Level Engineering Approach to Define the Social Value Rating of Earth Remote Sensing Missions Through Sustainable Development Goals
Full text linkIn 2015, the UN state members agreed on the “Transforming our world: the 2030 Agenda for Sustainable Development” document to drive the evolution of humanity in the close future. A great effort has been placed to understand how space missions and their data can support the goals fulfilment, both by private entities and public organisations like the European Space Agency (ESA) or United Nations Office for Outer Space Affairs (UNOOSA). This paper proposes a method to evaluate the level of support that a space missions used for Earth observation in Low Earth Orbit (LEO) can provide to each goal, using a set of indices based on missions' and payloads' performance related to Earth Observation (EO) services. Eight Earth observation services have been selected for this study: mapping, disaster monitoring, forestry, agriculture, geology, oceanography, hydrology, meteorology. Each of these services has its own performance requirements and can support many different goals. Using the relationship between mission performance and services together with the original correlation between the services and the Sustainable Development Goals 2030 (SDG2030), the final assessment of an Earth Observation mission towards each goal is achieved
Privacy Oriented Software Development
No full textThreats to applications security are continuously evolving thanks to factors such as progress made by the attackers, release of new technologies, use of increasingly complex systems. In this scenario, it is necessary to implement both design and programming practices that guarantee the security of the code on one hand, and the privacy of the data, on the other. This paper proposes a software development approach, Privacy Oriented Software Development (POSD), that complements traditional development processes by integrating the activities needed for addressing security and privacy management in software systems. The approach is based on 5 key elements (Privacy by Design, Privacy Design Strategies, Privacy Pattern, Vulnerabilities, Context). It can be applied forward for developing new systems and backward for re-engineering an existing one. This paper presents the POSD approach in the backward mode together with an experimentation in the context of an industrial project. Results show that POSD is able to discover software vulnerabilities, identify the remediation patterns needed for addressing them in the source code and design the target architecture to be used for guiding privacy-oriented system reengineering
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
Flipping the Laboratory in an Academic Course on Object-Oriented Paradigm
No full textThis paper reports an application of a teaching strategy based on a flipped classroom approach for laboratory sessions of a second-year programming university course, Programming II, held at the University of Bari and focused on the OOP paradigm. In our experience, this approach lets the students train to implement programs on their own before coming to class. Here, they will apply the knowledge during face-to-face lessons to elaborate, reflect and compare on what has been learned. We provided an evaluation of the approach through a quasi-experiment aiming at comparing two groups of students: one followed laboratory sessions by a flipped classroom approach and the other one by the traditional approach. Results show that the flipped group helps to produce better source code than the traditional group over the course of the time
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
Intrusion detection for in-vehicle communication networks: An unsupervised kohonen SOM approach
Full text linkThe diffusion of embedded and portable communication devices on modern vehicles entails new security risks since in-vehicle communication protocols are still insecure and vulnerable to attacks. Increasing interest is being given to the implementation of automotive cybersecurity systems. In this work we propose an efficient and high-performing intrusion detection system based on an unsupervised Kohonen Self-Organizing Map (SOM) network, to identify attack messages sent on a Controller Area Network (CAN) bus. The SOM network found a wide range of applications in intrusion detection because of its features of high detection rate, short training time, and high versatility. We propose to extend the SOM network to intrusion detection on in-vehicle CAN buses. Many hybrid approaches were proposed to combine the SOM network with other clustering methods, such as the k-means algorithm, in order to improve the accuracy of the model. We introduced a novel distance-based procedure to integrate the SOM network with the K-means algorithm and compared it with the traditional procedure. The models were tested on a car hacking dataset concerning traffic data messages sent on a CAN bus, characterized by a large volume of traffic with a low number of features and highly imbalanced data distribution. The experimentation showed that the proposed method greatly improved detection accuracy over the traditional approach
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
Hobby wargames: a preliminary survey
No full textWargames are strategy games in which two or more players, by taking on the roles of opposing sides, make decisions that shape the course of historical or imaginary military events. Striking a balance between realism and playability, through the implementation of engaging and familiar game mechanics, is a critical aspect of designing successful wargames and conveying to the players their objectives. However, a lack of evaluation and critique of serious wargames, targeted primarily for training and analysis purposes, limits their progress compared to their hobby counterparts, mainly designed for entertainment. Hybridization, integrating traditional board game elements with digital technology, is also emphasized for its role in generating innovative experiences. Therefore, this study serves as an initial survey into the current trends of hobby Wargaming, focusing on prevalent game mechanics, their design, the distinctions between them, and their potential exploration in a hybrid context. We analyzed 30 wargames using BoardGameGeek database as the primary source and identified 56 different game mechanics, with notable heterogeneity among the games. Findings revealed common design patterns, such as competitive gameplay, fixed turn order, utilization of cards and dice, and the inclusion of area majority mechanisms. With this study we strive to provide valuable insights into traditional wargame design and propose opportunities in its digitalization, such as time and information flow modelling or the use of inhuman opponents, with the aim to enhance the overall understanding of this genre
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