50 research outputs found
XDM-compatible service repository for user-centric service creation and discovery
No full textThe key objective of OPUCE system is to enable the participation of end-users in the management of their own services, by providing them with innovative tools which allow an easy creation and delivery of personalized communication and information services. This paper describes the OPUCE service and component repository, which extends the OMA OSPE service model storage approach XDM. By integrating an ebXML registry using the native notification mechanisms of XDM, the search capability of the repository is dramatically improved. Moreover, this repository also exploits semantic Web technology to provide an intuitive visualized browser for convenient service exploring.Jian Yu, Paolo Falcarin, Sancho Rego, Isabel Ordas, Eduardo Martins, Quan Sun, Ruben Trapero and Quan Z. Shen
Leveraging Context-Awareness for Personalization in a User Generated Services Platform
No full text- Enabling context-aware web services: method
Telco Cloud Resilience: Synergies between Fault and Security Management
No full textThis work capitalizes on the concept of network function virtualization at the telco cloud, and presents a joint study between fault management and security management. Specifically, the commonalities of fault and security management are put forward, along with a resource allocation study in common slice deployments. In this regard, a security threat analysis is presented, which sheds light onto the impact of security threats on network fault management. The interdependence between security and fault management is highlighted via three use cases, where distinct levels of resource trade-offs are identified. Along with such use cases, the paper provides also an overview of the resulting resource allocation process, where the requirements of the corresponding slice are analyzed towards an overall efficient resource usage.© 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works
A database of freshwater macroinvertebrate occurrence records across Cuba
No full textIn light of the ongoing freshwater biodiversity crisis, detailed knowledge regarding the spatial distribution of freshwater species is urgently required, especially in biodiversity hotspots. Here we present a database of georeferenced occurrence records of four freshwater invertebrate taxa groups across Cuba, namely flatworms (Platyhelminthes: Tricladida), insects (Ephemeroptera, Odonata, Hemiptera, Trichoptera, Coleoptera, Diptera), crabs and shrimps (Crustacea: Decapoda), and mollusks (Mollusca). We collated the geographic occurrence information from scientific literature, unpublished field records, museum collections and online databases. The database, comprising 6292 records of 457 species at 1075 unique localities, is organized in 32 fields that contain the information about the taxonomic classification of each recorded species, the sex and life stage of collected individuals; the geographic coordinates, location, author and date of the record and a reference to the original data source. This database provides an important basis towards an improved understanding of the spatial distribution of freshwater biodiversity in Cuba.Georg Foster Postdoctoral Fellowship of the Alexander von Humbold
Voces de tradición: Reflexiones ante la figura mitificada de un guslari
No full textThe popular epic of the guslari recounted in the lliad and Odyssey (credited to Homer) has. been revived with the appearance of a guslari on Mallorca in March 2004. The author insists. on the study of them in other literary categories such as the romancero and décima. as well ali elsewhere in Europe.La épica popular de los guslaris croatas es la más representativa de las. culturas antiguas que ha sido relacionada con la Ilíada y la Odisea del más grande los aedos. Homero. Con motivo de haber presenciado de la actuación de un guslari en Manacor (Mallorca ). en marzo de 2004, el autor reclama la necesidad de estudiar este y otros fenómenos poéticos de la tradición oral hispana, como el romancero y la décima. y de otros lugares de Europa. para explicar muchas manifestaciones literarias poéticas de Ja historia de la literatura y de la música que tuvieron su lugar propio de creación no en una cultura escrita, sino oral
A User-Centric Service Creation Approach for Next Generation Networks
No full textThe architecture and technologies for the Next Generation Networks are well known. The service provision approach is not so clear though. While the Telecommunications killer application still remains to be found, new competitors in the new all-IP world threaten the traditional business models of telcos by providing their services directly to the operators' customers. An innovative paradigm has recently come about in the Internet which allows users to create and share their own services from the composition of other services. User-centric service creation environments improve the service offering with profitable, value-added services faster and cheaper than ever before. This paper presents the initial results of a research project that applies the user-centric approach to the creative combination of Web and network services over Next Generation Networks
« Es signo de islas»: Agustín Espinosa y el romancero canario
No full textAgustín Espinosa is one of the most important authors of the Canary Islands. A multifaceted writer, his work as a compiler of island “romances” is little known. In this work we will see what was the status of the Canarian “romances” research at the beginning of the 20th century and we will value the pioneering contribution of the author of Crimen to this field. To do this, we will review what other researchers such as Maximiano Trapero or Diego Catalán have written on the subject and propose a new reading of Espinosa’s research that starts from its context, that is, a reading that derives from a time when literature of the Canary Islands was concerned with establishing its existence by uniting tradition, insularity and the avant-garde.Agustín Espinosa es uno de los autores más importantes de las letras canarias. Escritor polifacético, es poco conocida su labor como recopilador de romances insulares. En este trabajo veremos cuál era el estado de la investigación del romancero canario a comienzos del siglo xx y valoraremos la aportación pionera del autor de Crimen a este campo. Para ello, revisaremos lo que otros investigadores como Maximiano Trapero o Diego Catalán han escrito sobre el tema y propondremos una nueva lectura del trabajo romancístico de Espinosa que parte de su contexto, es decir, una lectura que deriva de un momento en el que la literatura canaria se preocupaba por fundamentar su existencia uniendo tradición, insularidad y vanguardia
ROMAN AGRONOMIC KNOWLEDGE OF VITICULTURE THROUGH LUCIUS COLUMELLA AND HIS UNCLE MARCUS IN HISPANIA
No full textAgriculture in the ancient world is the most important economic activity from a quantitative point of view. Within the ancient knowledge of the countryside, agronomy was the fundamental science, originally developed by the Romans and whose influence would remain well into modern times. In this article, we analyse Latin agronomic sources from three perspectives. First, we look at the sources and origins of these agronomists. Second, analysing the diffusion they would have among their contemporaries. Thirdly, to see the permanence of these sources in other historical moments, such as late antiquity, the Muslim and Christian medieval periods. We will focus on the case of Columella and the Lower Guadalquivir region in the southwest of the Iberian Peninsula. Columella was the most important author for viticulture, who has an important later influence and a source of information on his uncle Marcus Columella, a farmer from Baetic
AHP-based quantitative approach for assessing and comparing cloud security
No full textWhile Cloud usage increasingly involves security considerations, there is still a conspicuous lack of techniques for users to assess/ensure that the security level advertised by the Cloud Service Provider (CSP) is actually delivered. Recent efforts have proposed extending existing Cloud Service Level Agreements (SLAs) to the security domain, by creating Security SLAs (SecLAs) along with attempts to quantify and reason about the security assurance provided by CSPs. However, both technical and usability issues limit their adoption in practice. In this paper we introduce a new technique for conducting quantitative and qualitative analysis of the security level provided by CSPs. Our methodology significantly improves upon contemporary security assessment approaches by creating a novel decision making technique based on the Analytic Hierarchy Process (AHP) that allows the comparison and benchmarking of the security provided by a CSP based on its SecLA. Furthermore, our technique improves security requirements specifications by introducing a flexible and simple methodology that allows users to identify their specific security needs. The proposed technique is demonstrated with real-world CSP data obtained from the Cloud Security Alliance's Security, Trust and Assurance Registry. © 2014 IEEE
Identifying and utilizing dependencies across cloud security services
No full textSecurity concerns are often mentioned amongst the reasons why organizations hesitate to adopt Cloud computing. Given that multiple Cloud Service Providers (CSPs) offer similar security services (e.g., \encryption key management") albeit with different capabilities and prices, the customers need to comparatively assess the offered security services in order to select the best CSP matching their security requirements. However, the presence of both explicit and implicit dependencies across security related services add further challenges for Cloud customers to (i) specify their security requirements taking service dependencies into consideration and (ii) to determine which CSP can satisfy these requirements. We present a framework to address these challenges. For challenge (i), our framework automatically detects conicts resulting from inconsistent customer requirements. Moreover, our framework provides an explanation for the detected conicts allowing customers to resolve these conicts. To tackle challenge (ii), our framework assesses the security level provided by various CSPs and ranks the CSPs according to the desired customer requirements. We demonstrate the framework's effectiveness with real-world CSP case studies derived from the Cloud Security Alliance's Security, Trust and Assurance Registry. © 2016 ACM
