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Service Oriented Multimedia Delivery System in Pervasive Environments

Service composition is an effective approach for large-scale multimedia delivery. In previous works, user requirement is represented as one fixed functional path which is composed of several functional components in a certain order. Actually, there may be several functional paths (deliver different quality level multimedia data, e.g., image pixel, frame rate) that can meet one request. And due to the diversity of devices and connections in pervasive environment, system should choose a suitable media quality delivery path in accordance with context, instead of one fixed functional path. This paper presents a deep study of multimedia delivery problem and proposes an on-line algorithm LDPath and an off-line centralized algorithm LD/RPath respectively. LDPath aims at delivering multimedia data to end user with lowest delay by choosing services to build delivery paths hop-by-hop, which is adapted to the unstable open environment. And LD/RPath is developed for a relatively stable environment, which generates delivery paths according to the trade-off between delay and reliability metrics, because the service reliability is also an important fact in such scenario. Experimental results show that both algorithms have good performance with low overhead to the system.




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Towards Classification of Web Ontologies for the Emerging Semantic Web

The massive growth in ontology development has opened new research challenges such as ontology management, search and retrieval for the entire semantic web community. These results in many recent developments, like OntoKhoj, Swoogle, OntoSearch2, that facilitate tasks user have to perform. These semantic web portals mainly treat ontologies as plain texts and use the traditional text classification algorithms for classifying ontologies in directories and assigning predefined labels rather than using the semantic knowledge hidden within the ontologies. These approaches suffer from many types of classification problems and lack of accuracy, especially in the case of overlapping ontologies that share common vocabularies. In this paper, we define an ontology classification problem and categorize it into many sub-problems. We present a new ontological methodology for the classification of web ontologies, which has been guided by the requirements of the emerging Semantic Web applications and by the lessons learnt from previous systems. The proposed framework, OntClassifire, is tested on 34 ontologies with a certain degree of overlapping domain, and effectiveness of the ontological mechanism is verified. It benefits the construction, maintenance or expansion of ontology directories on the semantic web that help to focus on the crawling and improving the quality of search for the software agents and people. We conclude that the use of a context specific knowledge hidden in the structure of ontologies gives more accurate results for the ontology classification.




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Ontology-based User Interface Development: User Experience Elements Pattern

The user experience of any software or website consists of elements from the conceptual to the concrete level. These elements of user experience assist in the design and development of user interfaces. On the other hand, ontologies provide a framework for computable representation of user interface elements and underlying data. This paper discusses strategies of introducing ontologies at different user interface layers adapted from user experience elements. These layers range from abstract levels (e.g. User needs/Application Objectives) to concrete levels (e.g. Application User Interface) in terms of data representation. The proposed ontological framework enables device independent, semi-automated GUI construction which we will demonstrate at a personal information management example.




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Ontology-based Competency Management: the Case Study of the Mihajlo Pupin Institute

Semantic-based technologies have been steadily increasing their relevance in recent years in both the research world and business world. Considering this, the present article discusses the process of design and implementation of a competency management system in information and communication technologies domain utilizing the latest Semantic Web tools and technologies including D2RQ server, TopBraid Composer, OWL 2, SPARQL, SPARQL Rules and common human resources related public vocabularies. In particular, the paper discusses the process of building individual and enterprise competence models in a form of ontology database, as well as different ways of meaningful search and retrieval of expertise data on the Semantic Web. The ontological knowledge base aims at storing the extracted and integrated competences from structured, as well as unstructured sources. By using the illustrative case study of deployment of such a system in the Human Resources sector at the Mihajlo Pupin Institute, this paper shows an example of new approaches to data integration and information management. The proposed approach extends the functionalities of existing enterprise information systems and offers possibilities for development of future Internet services. This allows organizations to express their core competences and talents in a standardized, machine processable and understandable format, and hence, facilitates their integration in the European Research Area and beyond.




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A Comparison of Different Retrieval Strategies Working on Medical Free Texts

Patient information in health care systems mostly consists of textual data, and free text in particular makes up a significant amount of it. Information retrieval systems that concentrate on these text types have to deal with the different challenges these medical free texts pose to achieve an acceptable performance. This paper describes the evaluation of four different types of information retrieval strategies: keyword search, search performed by a medical domain expert, a semantic based information retrieval tool, and a purely statistical information retrieval method. The different methods are evaluated and compared with respect to its appliance in medical health care systems.




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An Ontology based Agent Generation for Information Retrieval on Cloud Environment

Retrieving information or discovering knowledge from a well organized data center in general is requested to be familiar with its schema, structure, and architecture, which against the inherent concept and characteristics of cloud environment. An effective approach to retrieve desired information or to extract useful knowledge is an important issue in the emerging information/knowledge cloud. In this paper, we propose an ontology-based agent generation framework for information retrieval in a flexible, transparent, and easy way on cloud environment. While user submitting a flat-text based request for retrieving information on a cloud environment, the request will be automatically deduced by a Reasoning Agent (RA) based on predefined ontology and reasoning rule, and then be translated to a Mobile Information Retrieving Agent Description File (MIRADF) that is formatted in a proposed Mobile Agent Description Language (MADF). A generating agent, named MIRA-GA, is also implemented to generate a MIRA according to the MIRADF. We also design and implement a prototype to integrate these agents and show an interesting example to demonstrate the feasibility of the architecture.




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ORPMS: An Ontology-based Real-time Project Monitoring System in the Cloud

Project monitoring plays a crucial role in project management, which is a part of every stage of a project's life-cycle. Nevertheless, along with the increasing ratio of outsourcing in many companies' strategic plans, project monitoring has been challenged by geographically dispersed project teams and culturally diverse team members. Furthermore, because of the lack of a uniform standard, data exchange between various project monitoring software becomes an impossible mission. These factors together lead to the issue of ambiguity in project monitoring processes. Ontology is a form of knowledge representation with the purpose of disambiguation. Consequently, in this paper, we propose the framework of an ontology-based real-time project monitoring system (ORPSM), in order to, by means of ontologies, solve the ambiguity issue in project monitoring processes caused by multiple factors. The framework incorporates a series of ontologies for knowledge capture, storage, sharing and term disambiguation in project monitoring processes, and a series of metrics for assisting management of project organizations to better monitor projects. We propose to configure the ORPMS framework in a cloud environment, aiming at providing the project monitoring service to geographically distributed and dynamic project members with great flexibility, scalability and security. A case study is conducted on a prototype of the ORPMS in order to evaluate the framework.




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Le meilleur de nos politiques sur twitter... (1)

Twitter, personnellement j'adore. J'ai connu ses balbutiements, il y a dix ans, nous n'étions que quelques blogueurs et journalistes, c'était un formidable lieu d'informations et de déconnes gentilles... à l'époque, il n'y avait pas de trolls aigris et...




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Abstentionniste, dois tu fermer ta gueule ?

Non, Fred, t’es pas tout seul… toi et tes copains abstentionnistes, vous êtes 27.125.535… soit 57,36% des français en âge de voter pour les législatives. Une paille quoi. Ce chiffre affolant permet à certains de dire que, les nouveaux députés ne sont...




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Des Gilets Jaunes à un mouvement 5 étoiles ?

Cette semaine, le Président Emmanel Macron est monté en première ligne pour tenter de désamorcer ce malaise qui peut mettre en péril la suite de son quinquennat. A en juger par les dernières enquêtes, cette intervention semble avoir fait long feu. Le...




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Réseaux Sociaux… entre hystérisation et égotisme

Si la question de l’hystérisation des réseaux sociaux ne date pas des Gilets Jaunes, nulle doute qu’elle revient sur le devant de la scène. Je ne parle même pas des théories du complot lié à ce mouvement. Pour ma part, les choses sont claires, il est...




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Intelligence Artificielle : vers le grand déclassement des Classes Moyennes ?

Depuis quelques années, la théorie du grand remplacement, popularisée par Michel Houellbecq dans Soumissions ou par un Eric Zemmour, a fait son chemin dans les arcanes les moins visibles du Net. Pourtant, le danger n’est pas là, loin s’en faut, il est...




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Les nouvelles formes d'escroquerie sur le Net.

Présent sur le Net depuis deux bonnes décennies, j’ai pu constater l’évolution des arnaques pour le simple quidam webonautes que nous sommes. Au départ, on a connu le fameux pishing via des mails grossièrement rédigés avec des entêtes de tel ou tel fournisseur...




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De la Société pulsionnelle à la société de l’algorithme

Le court XXème siècle que le monde aura connu, est qualifié par certains historiens comme l’âge des extrêmes. Avec en point d’orgue, des guerres et des gouvernements qui auront décimés plusieurs dizaines de millions d’individus et dans le même temps,...




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Notre Dame des spiritualités.

L’émoi de l’incendie de Notre Dame de Paris dépasse largement nos frontières hexagonales. Et plus intéressant encore, il transcende nos croyances, nos cultures, il touche au plus de profond de l’être humain. A cet égard, j’ai également été touché par...




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Netanyahu s’est entretenu 3 fois avec Trump depuis sa réélection à propos de la "menace iranienne"

Netanyahu s’est entretenu 3 fois avec Trump depuis sa réélection à propos de la "menace iranienne"




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Des scientifiques découvrent un "troisième état" entre la vie et la mort

Des scientifiques découvrent un "troisième état" entre la vie et la mort




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No Comment : commémoration du 106e anniversaire de l'Armistice 

No Comment : commémoration du 106e anniversaire de l'Armistice 




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No Comment : les mariachis se réunissent à Mexico pour battre le record du monde de chant

No Comment : les mariachis se réunissent à Mexico pour battre le record du monde de chant




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No Comment : des slackliners se balancent entre des montgolfières à 2 500 mètres d'altitude

No Comment : des slackliners se balancent entre des montgolfières à 2 500 mètres d'altitude




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No Comment : des couronnes de coquelicots pour le Dimanche du Souvenir 

No Comment : des couronnes de coquelicots pour le Dimanche du Souvenir 




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No Comment : l'Antarctica Ice Ultra ou la course de l'extrême 

No Comment : l'Antarctica Ice Ultra ou la course de l'extrême 




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No Comment : manifestation pour la paix à la COP 29

No Comment : manifestation pour la paix à la COP 29




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Espagne : des problèmes sanitaires dans les zones sinistrées par les inondations

Espagne : des problèmes sanitaires dans les zones sinistrées par les inondations




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Serbie : des manifestants demandent la démission du gouvernement après le drame de Novi Sad

Serbie : des manifestants demandent la démission du gouvernement après le drame de Novi Sad




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No Comment : des heurts et des incendies dans la capitale haïtienne Port-au Prince

No Comment : des heurts et des incendies dans la capitale haïtienne Port-au Prince




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Trump va nommer les "faucons" Rubio et Waltz à la tête de la politique étrangère (rapports)

Trump va nommer les "faucons" Rubio et Waltz à la tête de la politique étrangère (rapports)




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No Comment : funérailles collectives au Liban

No Comment : funérailles collectives au Liban




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No Comment : un psychanaliste dans le métro new-yorkais

No Comment : un psychanaliste dans le métro new-yorkais




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No Comment : Tyrannosaure Rex, un mannequin pas comme les autres

No Comment : Tyrannosaure Rex, un mannequin pas comme les autres




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L'aide militaire américaine à Israël va se poursuivre après un ajustement de l'aide à Gaza

L'aide militaire américaine à Israël va se poursuivre après un ajustement de l'aide à Gaza




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Donald Trump confie à Elon Musk et Vivek Ramaswamy "l'efficacité gouvernementale"

Donald Trump confie à Elon Musk et Vivek Ramaswamy "l'efficacité gouvernementale"




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No Comment : en Serbie, des centaines d’œufs jetés sur le siège d’Euro Lithium Balkan

No Comment : en Serbie, des centaines d’œufs jetés sur le siège d’Euro Lithium Balkan




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No Comment : les universités en crise en Argentine 

No Comment : les universités en crise en Argentine 




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No Comment : l'éruption d'un volcan cloue les avions au sol à Bali

No Comment : l'éruption d'un volcan cloue les avions au sol à Bali




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An efficient edge swap mechanism for enhancement of robustness in scale-free networks in healthcare systems

This paper presents a sequential edge swap (SQES) mechanism to design a robust network for a healthcare system utilising energy and communication range of nodes. Two operations: sequential degree difference operation (SQDDO) and sequential angle sum operation (SQASO) are performed to enhance the robustness of network. With equivalent degrees of nodes from the network's centre to its periphery, these operations build a robust network structure. Disaster attacks that have a substantial impact on the network are carried out using the network information. To identify a link between the malicious and disaster attacks, the Pearson coefficient is employed. SQES creates a robust network structure as a single objective optimisation solution by changing the connections of nodes based on the positive correlation of these attacks. SQES beats the current methods, according to simulation results. When compared to hill-climbing algorithm, simulated annealing, and ROSE, respectively, the robustness of SQES is improved by roughly 26%, 19% and 12%.




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DeFog: dynamic micro-service placement in hybrid cloud-fog-edge infrastructures

DeFog is an innovative microservice placement and load balancing approach for distributed multi-cluster cloud-fog-edge architectures to minimise application response times. The architecture is modelled as a three-layered hierarchy. Each layer consists of one or more clusters of machines, with resource constraints increasing towards lower layers. Applications are modelled as service oriented architectures (SOA) comprising multiple interconnected microservices. As many applications can be run simultaneously, and as the resources of the edge and the fog are limited, choosing among services to run on the edge or the fog is the problem this work is dealing with. DeFog focuses on dynamic (i.e., adaptive) decentralised service placement within each cluster with zero downtime, eliminating the need for coordination between clusters. To assess the effectiveness of DeFog, two realistic applications based on microservices are deployed, and several placement policies are tested to select the one that reduces application latency. Least frequently used (LFU) is the reference service placement strategy. The experimental results reveal that a replacement policy that uses individual microservice latency as the crucial factor affecting service placement outperformed LFU by at least 10% in application response time.




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Smart and adaptive website navigation recommendations based on reinforcement learning

Improving website structures is the main task of a website designer. In recent years, numerous web engineering researchers have investigated navigation recommendation systems. Page recommendation systems are critical for mobile website navigation. Accordingly, we propose a smart and adaptive navigation recommendation system based on reinforcement learning. In this system, user navigation history is used as the input for reinforcement learning model. The model calculates a surf value for each page of the website; this value is used to rank the pages. On the basis of this ranking, the website structure is modified to shorten the user navigation path length. Experiments were conducted to evaluate the performance of the proposed system. The results revealed that user navigation paths could be decreased by up to 50% with training on 12 months of data, indicating that users could more easily find a target web page with the help of the proposed adaptive navigation recommendation system.




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Diabète : trois grands rendez-vous à Nîmes cette semaine - Midi Libre

  1. Diabète : trois grands rendez-vous à Nîmes cette semaine  Midi Libre
  2. Journée mondiale du diabète : un dépistage gratuit près du Havre ce jeudi 14 novembre  actu.fr
  3. Orange. Des actions pour la journée du diabète et le mois sans tabac  Le Dauphiné Libéré
  4. Santé - Diabète et bien-être : une journée de prévention organisée à Guéret  La Montagne





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Attention, votre airfryer pourrait produire une substance cancérigène dans vos aliments selon une étude - Yahoo Actualités

  1. Attention, votre airfryer pourrait produire une substance cancérigène dans vos aliments selon une étude  Yahoo Actualités
  2. 3 bonnes raisons de choisir un Airfryer en 2024  La Provence
  3. Nos 30 recettes rapides et faciles au Airfryer, du plat de résistance au dessert  Le Figaro
  4. Les air fryers sont-ils dangereux pour la santé ? Une étude lance l'alerte  Allo Docteurs
  5. Airfryer : attention aux acrylamides potentiellement cancérigènes  Pourquoi Docteur ?