Sunday, August 04, 2019

Uma Estratégia de Acesso a Conteúdos Educacionais Embarcados em Transporte Público de Massa com Bus-Learning

Uma Estratégia de Acesso a Conteúdos Educacionais Embarcados em Transporte Público de Massa com Bus-Learning: Distance Learning, Lifelong Learning (LLL), E-Learning, Continuous Education and Mobile Learning (M-Learning) are new educational strategies which, under the learner and teacher perspectives, look for providing both technological and pedagogical approaches towards the realization and improvement of the learning process in actual scenarios in which actors and educational resources are potentially highly distributed in space and time. Some new technological solutions are enablers that support these learning strategies and, potentially, make use of new paradigms like mobility, ubiquity, pervasive computing, high capacity broadband access and low cost wireless technologies, among others. This paper proposes a specific architecture and technology setup for educational content distribution in public transportation buses, briefly referred as “Bus-Learning”. The solution is intended to support a mobile learning approach (M-Learning) and is based on Bluetooth, electronic automated bus billing systems and bus-TV infrastructure which are becoming highly available in public mass transportation systems in cities due to the increasingly pervasive aspect of technology penetration in our societies. The main objective is to support a specific group and type of mobile users in accessing educational content with low cost, enhanced ergonomics and some additional advantages in relation to some \textit{M-Learning} approaches that are typically based on tablets, handheld computers and other sophisticated appliances requiring near-...

Saturday, August 03, 2019

Illustrated Technical Paper - A Pub/Sub SDN-Integrated Framework for IoT Traffic Orchestration

Illustrated Technical Paper - A Pub/Sub SDN-Integrated Framework for IoT Traffic Orchestration: This 'ILLUSTRATED TECHNICAL PAPER' presents the slides describing the contents of the paper 'A Pub/Sub SDN-Integrated Framework for IoT Traffic Orchestration'. The talk was presented at the 3rd International Conference on Future Networks and Distributed Systems - ICFNDS 2019, 1 - 2 July 2019 at Paris, France. The 'illustrated technical paper format' is intended to complement, enrich and subsidize the technical paper content and contains slides, complementary text and additional and/or focused bibliographic references.

Illustrated Technical Paper - A Pub/Sub SDN-Integrated Framework for IoT Traffic Orchestration

Illustrated Technical Paper - A Pub/Sub SDN-Integrated Framework for IoT Traffic Orchestration: This 'ILLUSTRATED TECHNICAL PAPER' presents the slides describing the contents of the paper 'A Pub/Sub SDN-Integrated Framework for IoT Traffic Orchestration'. The talk was presented at the 3rd International Conference on Future Networks and Distributed Systems - ICFNDS 2019, 1 - 2 July 2019 at Paris, France. The 'illustrated technical paper format' is intended to complement, enrich and subsidize the technical paper content and contains slides, complementary text and additional and/or focused bibliographic references.

Tuesday, July 09, 2019

A Electric Network Reconfiguration Strategy with Case-Based Reasoning for the Smart Grid

A Electric Network Reconfiguration Strategy with Case-Based Reasoning for the Smart Grid: The complexity, heterogeneity and scale of electrical networks have grown far beyond the limits of exclusively human-based management at the Smart Grid (SG). Likewise, researchers cogitate the use of artificial intelligence and heuristics techniques to create cognitive and autonomic management tools that aim better assist and enhance SG management processes like in the grid reconfiguration. The development of self-healing management approaches towards a cognitive and autonomic distribution power network reconfiguration is a scenario in which the scalability and on-the-fly computation are issues. This paper proposes the use of Case-Based Reasoning (CBR) coupled with the HATSGA algorithm for the fast reconfiguration of large distribution power networks. The suitability and the scalability of the CBR-based reconfiguration strategy using HATSGA algorithm are evaluated. The evaluation indicates that the adopted HATSGA algorithm computes new reconfiguration topologies with a feasible computational time for large networks. The CBR strategy looks for managerial acceptable reconfiguration solutions at the CBR database and, as such, contributes to reduce the required number of reconfiguration computation using HATSGA. This suggests CBR can be applied with a fast reconfiguration algorithm resulting in more efficient, dynamic and cognitive grid recovery strategy.

Saturday, June 01, 2019

A Blockchain-based Educational Record Repository ILLUSTRATED TECHNICAL PAPER

A Blockchain-based Educational Record Repository ILLUSTRATED TECHNICAL PAPER: This ILLUSTRATED TECHNICAL PAPER presents the slides describing the contents of the paper 'A Blockchain-based Educational Record Repository'. The talk was presented at the 7th International Workshop on ADVANCEs in ICT Infrastructures and Services - ADVANCE 2019, 21 - 22 January 2019 at Praia, Cape Vert. The 'illustrated technical paper format' is intended to complement, enrich and subsidize the technical paper content and contains slides, complementary text and additional and/or focused bibliographic references.

Saturday, May 25, 2019

A Pub/Sub SDN-Integrated Framework for IoT Traffic Orchestration

A Pub/Sub SDN-Integrated Framework for IoT Traffic Orchestration: The Internet of Things (IoT) is advancing and the adoption of internet-connected devices in everyday use is constantly growing. This increase not only affects the traffic from other sources in the network, but also the communication quality requirements, like Quality of Service (QoS), for the IoT devices and applications. With the rise of dynamic network management and dynamic network programming technologies like Software-Defined Networking (SDN), traffic management and communication quality requirements can be tailored to fit niche use cases and characteristics. We propose a publish/subscribe QoS-aware framework (PSIoT-SDN) that orchestrates IoT traffic and mediates the allocation of network resources between IoT data aggregators and pub/sub consumers. The PSIoT framework allows edge-level QoS control using the features of publish/ subscribe orchestrator at IoT aggregators and, in addition, allows network-level QoS control by incorporating SDN features coupled with a bandwidth allocation model for network-wide IoT traffic management. The integration of the framework with SDN allows it to dynamically react to bandwidth sharing enabled by the SDN controller, resulting in better bandwidth distribution and higher link utilization for IoT traffic.

Sunday, April 07, 2019

Intelligent Communication Resource Allocation for Smart City with Machine Learning and SDN OpenFlow

Intelligent Communication Resource Allocation for Smart City with Machine Learning and SDN OpenFlow: This ILLUSTRATED TECHNICAL PAPER presents the slides describing the contents of the short-course 'Intelligent Communication Resource Allocation for Smart City with Machine Learning and SDN OpenFlow'. The talk was presented at VII International Workshop on ADVANCEs in ICT Infrastructures and Services - ADVANCE 2019, 21 of January 2019 at Universidade de Cabo Verde (UNICV), Praia, Cape Vert. The illustrated technical paper format aims to complement, enrich and subsidize the technical content of the course and contains slides, complementary text and additional and/or focused bibliographic references.

Sunday, February 17, 2019

A Blockchain-based Educational Record Repository

A Blockchain-based Educational Record Repository: The Blockchain technology was initially adopted to implement various cryptocurrencies. Currently, Blockchain is foreseen as a general purpose technology with a huge potential in many areas. Blockchain-based applications have inherent characteristics like authenticity, immutability and consensus. Beyond that, records stored on Blockchain ledger can be accessed any time and from any location. Blockchain has a great potential for managing and maintaining educational records. This paper presents a Blockchain-based Educational Record Repository (BcER2) that manages and distributes educational assets for academic and industry professionals. The BcER2 system allows educational records like e-diplomas and e-certicates to be securely and seamless transferred, shared and distributed by parties.

Saturday, October 20, 2018

Towards Smart City Innovation under the Perspective of Software-Defined Networking, Artificial Intelligence and Big Data

Towards Smart City Innovation under the Perspective of Software-Defined Networking, Artificial Intelligence and Big Data: Smart city projects address many of the current problems afflicting high populated areas and cities and, as such, are a target for government, institutions and private organizations that plan to explore its foreseen advantages. In technical terms, smart city projects present a complex set of requirements including a large number users with highly different and heterogeneous requirements. In this scenario, this paper proposes and analyses the impact and perspectives on adopting software-defined networking and artificial intelligence as innovative approaches for smart city project development and deployment. Big data is also considered as an inherent element of most smart city project that must be tackled. A framework  layered view is proposed with a discussion about software-defined networking and machine learning impacts on innovation followed by a use case that demonstrates the potential benefits of cognitive learning for smart cities. It is argued that the complexity of smart city projects do require new innovative approaches that potentially result in more efficient and intelligent systems.

Thursday, July 12, 2018

A Prevalência do Modelo de Critérios Construídos com Stackholders para a Avaliação do Alinhamento Estratégico entre os Processos de Negócio e de Tecnologia da Informação

A Prevalência do Modelo de Critérios Construídos com Stackholders para a Avaliação do Alinhamento Estratégico entre os Processos de Negócio e de Tecnologia da Informação: O estudo analisou o modelo de alinhamento estratégico entre os processos de negócios e os processos de tecnologia de informação na EBAL – Empresa Baiana de Alimentos à luz do modelo de alinhamento estratégico de Henderson e Venkatraman (1993). Para mensuração do nível de alinhamento da TI com o Negócio, considerou os modelos de Galas e Ponte (2005), Luftman, Papp e Brier (2002), além do modelo construído, que leva em consideração a perspectiva dos gestores da EBAL, promovendo a confrontação entre estes modelos. A estratégia documental foi adotada para análise do modelo de alinhamento, enquanto que a mensuração do seu nível foi operacionalizada com o uso de questionários ponderados, todos validados através de triangulação com grupo focal. O estudo demonstrou que o modelo delimitado apresentou um bom nível de alinhamento (3.21 e 3.60, respectivamente, numa escala de 5 pontos) para as métricas sugeridas pela literatura. Contudo, na métrica construída pelo estudo, o nível de alinhamento teve uma qualificação apenas regular (2.51 pontos), sugerindo a prevalência de modelos com ponderação interna para avaliação do fenômeno.

Tuesday, March 13, 2018

Innovation in Future Internet Scenario with Network Programmability and Smart Systems

Innovation in Future Internet Scenario with Network Programmability and Smart Systems: This 'presentation paper' discusses the innovation scenario with Software-defined Networking (SDN)/ OpenFlow for smart systems. A 'presentation paper' format is used with slides and bibliographic references to subsidize and enrich contents lecture. This talk was presented at Campus Party - BA - Brazil 2017.

Monday, March 12, 2018

Ambiente de Gerência Autônoma de Redes para a Qualidade de Serviço

Ambiente de Gerência Autônoma de Redes para a Qualidade de Serviço: The need to keep assured quality of service levels in complex networks is a challenging process in network management area. In such a scenario, it becomes important to identify and specify a network management structure focusing on autonomous network administration that, by definition, will reduce human intervention in the process and will promote automatic network operations and management. The Autonomous Network Management Framework (AGA), proposed in this paper, supports autonomous management. Its implementation articulates network management planes and uses genetic algorithms in order to identify heuristics to provide solutions to network utilization, routing and packet scheduling focusing on autonomous management.

Saturday, March 10, 2018

Avaliação Experimental da Utilização da Estratégia de Redes Ativas para o Suporte da Qualidade de Serviço no Contexto de Aplicações Multimídia

Avaliação Experimental da Utilização da Estratégia de Redes Ativas para o Suporte da Qualidade de Serviço no Contexto de Aplicações Multimídia: The active networking paradigm corresponds to an initiative including projects, developments and implementations searching for a new communication concept/ paradigm allowing fast, safe and efficient communications. The basic target is to provide, among other features and services, the management and configuration of new and complex network services and equipment (backbones), supporting dynamically the quality of service (QoS) needs of the new multimedia applications, so often pointed as the trend in the web world. This paper evaluates experimentally and objectively the usability of a specific active networking implementation architecture (ANTS) focusing on the dynamic configuration of backbone routers for supporting QoS in a multimedia applications scenario. The paper describes the evaluated architecture, proposes two implementation scenarios and evaluates experimentally their use for dynamic routers configuration.

Considerations about a Methodological Approach for Multi-service and Multi-priority Traffic Parameters Optimization

Considerations about a Methodological Approach for Multi-service and Multi-priority Traffic Parameters Optimization: This paper proposes a simple methodological approach to represent quality of service parameters in multi-service and multi-priority networks and discusses the identification of methods and dependencies to handle network parameters targeting an optimization method. Both the approach to represent network parameters and the optimization methods are part of a more general framework intended to optimize resource allocation in DiffServ domains.

Saturday, February 03, 2018

A Publish/Subscribe QoS-aware Framework for Massive IoT Traffic Orchestration

A Publish/Subscribe QoS-aware Framework for Massive IoT Traffic Orchestration: Internet of Things (IoT) application deployment requires the allocation of resources such as virtual machines, storage, and network elements that must be deployed over distinct infrastructures such as cloud computing, Cloud of Things (CoT), datacenters and backbone networks. For massive IoT data acquisition, a gateway-based data aggregation approach is commonly used featuring sensor/ actuator seamless access and providing cache/ buffering and preprocessing functionality. In this perspective, gateways acting as producers need to allocate network resources to send IoT data to consumers. In this paper, it is proposed a Publish/Subscribe (PubSub) quality of service (QoS) aware framework (PSIoT-Orch) that orchestrates IoT traffic and allocates network resources between aggregates and consumers for massive IoT traffic. PSIoT-Orch schedules IoT data flows based on its configured QoS requirements. Additionally,  the framework allocates network resources (LSP/ bandwidth) over a controlled backbone network with limited and constrained resources between IoT data users and consumers. Network resources are allocated using a Bandwidth Allocation Model (BAM) to achieve efficient network resource allocation for scheduled IoT data streams. PSIoT-Orch adopts an ICN (Information-Centric Network) PubSub architecture approach to handle IoT data transfers requests among framework components. The proposed framework aims at gathering the inherent advantages of an ICN-centric approach using a PubSub message scheme while allocating resources efficiently keeping QoS awareness and handling restricted network resources (bandwidth) for massive IoT traffic.