196,342 research outputs found
Légendes du feu en Grèce ancienne : M. Halm-Tisserant, Cannibalisme et immortalité, l'enfant dans le chaudron en Grèce ancienne.
No full textJourdain-Annequin Colette. Légendes du feu en Grèce ancienne : M. Halm-Tisserant, Cannibalisme et immortalité, l'enfant dans le chaudron en Grèce ancienne.. In: Dialogues d'histoire ancienne, vol. 20, n°2, 1994. pp. 414-418
GSpace: An Architectural Approach for Self-Managing Extra-Functional Concerns
No full textMiddleware-based solutions for self-managing systems provide a degree of separation between the mechanisms that govern the adaptability of a system and application functionality. Systems become in this way more flexible, dependable and robust to changes. However, it is possible to achieve another degree of separation by separating from the application logic the different extra-functional concerns (such as availability, performance, and security). This separation, known as Separation of Concerns principle, helps in generating software artifacts that are more maintainable and reusable.
In this paper, we propose an architectural model for a middleware-based solution where the self-managing principle is applied to extra-functional concerns. Our middleware, based on the Shared Data Space model, is capable of dynamically adapt extra-functional concerns to the actual needs of the applications
Encrypted Shared Data Spaces
No full textThe deployment of Share Data Spaces in open, possibly hostile, environments arises the need of protecting the confidentiality of the data space content. Existing approaches focus on access control mechanisms that protect the data space from untrusted agents. The basic assumption is that the hosts (and their administrators) where the data space is deployed have to be trusted. Encryption schemes can be used to protect the data space content from malicious hosts. However, these schemes do not allow searching on encrypted data. In this paper we present a novel encryption scheme that allows tuple matching on completely encrypted tuples. Since the data space does not need to decrypt tuples to perform the search, tuple confidentiality can be guaranteed even when the data space is deployed on malicious hosts (or an adversary gains access to the host). Our scheme does not require authorised agents to share keys for inserting and retrieving tuples. Each authorised agent can encrypt, decrypt, and search encrypted tuples without having to know other agents’ keys. This is beneficial inasmuch as it simplifies the task of key management. An implementation of an encrypted data space based on this scheme is described and some preliminary performance results are given
GHOST: experimenting countermeasures for conflicts in the pilot's activity
No full textAn approach for designing countermeasures to cure
conflict in aircraft pilots’ activities is presented,
both based on Artificial Intelligence and Human
Factors concepts.
The first step is to track the pilot’s activity, i.e. to
reconstruct what he has actually done thanks to the
flight parameters and reference models describing
the mission and procedures. The second step is
to detect conflict in the pilot’s activity, and this is
linked to what really matters to the achievement
of the mission. The third step is to design accu-
rate countermeasures which are likely to do bet-
ter than the existing onboard devices. The three
steps are presented and supported by experimental
results obtained from private and professional pi-
lots
Young children and the use of digital technology across Europe
No full textChildren are often more digitally skilled than parents realise and learn both from observing other family members and from developing their own strategies. Yet parental attitudes still deeply influence children’s levels of digital literacy and parents tend to have a more positive view of digital technology if schools meaningfully integrate such technologies into children’s learning. These are some of the findings from a major Europe-wide European Commission study of children’s media practices presented here, during Global Media and Information Literacy Week 2018, by Stéphane Chaudron and Rosanna Di Gioia. Stéphane researches young digital citizens’ security and safety at the Joint Research Centre of the European Commission (JRC) and Rosanna is a researcher in the JRC Cyber and Digital Citizens’ Security Unit. [Header image credit: M. Stewart, CC BY-SA 2.0.jpg
Dr. Duane M. Jackson, Morehouse College, July 2011
No full textThis video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States" By M. Carey.
No full text"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States: containing bried sketches of the moral and political character of those states.
By M. Carey, member of the American philosophical, and of the American Antiquarian Society, and author of The Olive Branch, Cindiciae Hibernicae, essays on banking, on political economy, and on internal improvement.
To which are now added the English editor's comments on the subject; together with Important Advice to Emigrants, and Cautions Against Impositions Practiced in the Outports
Does the Level of Detail of UML Diagrams Affect the Maintainability of Source Code?: A Family of Experiments
No full textAlthough the UML is considered to be the de facto standard notation with which to model software, there is still resistance to model-based development. UML modeling is perceived to be expensive and not necessarily cost-effective. It is therefore important to collect empirical evidence concerning the conditions under which the use of UML makes a practical difference. The focus of this paper is to investigate whether and how the Level of Detail (LoD) of UML diagrams impacts on the performance of maintenance tasks. A family of experiments consisting of one controlled experiment and three replications has therefore been carried out with 81 students with different abilities and levels of experience from 3 countries (The Netherlands, Spain, and Italy). The analysis of the results of the experiments indicates that there is no strong statistical evidence as to the influence of different LoDs. The analysis suggests a slight tendency toward better results when using low LoD UML diagrams, especially if used for the modification of the source code, while a high LoD would appear to be helpful in understanding the system. The participants in our study also favored low LoD diagrams because they were perceived as easier to read. Although the participants expressed a preference for low LoD diagrams, no statistically significant conclusions can be drawn from the set of experiments. One important finding attained during this family of experiments was that the participants minimized or avoided the use of UML diagrams, regardless of their LoD. This effect was probably the result of using small software systems from well-known domains as experimental materials
Dispelling the Myths Behind First-author Citation Counts
No full textWe 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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