Articles

An agile and effective network function virtualization infrastructure for the Internet of Things

The processing and power-consumption constraints of the Internet of Things devices hinder them to offer more complex network services than the simple data transmission in smart city scenarios. The lack of comp...

Authors: Diogo Menezes Ferrazani Mattos, Pedro Braconnot Velloso and Otto Carlos Muniz Bandeira Duarte

GARSAaaS: group activity recognition and situation analysis as a service

Human activity recognition using embedded mobile and embedded sensors is becoming increasingly important. Scaling up from individuals to groups, that is, group activity recognition, has attracted significant a...

Authors: Amin B. Abkenar, Seng W. Loke, Arkady Zaslavsky and Wenny Rahayu

Improving microservice-based applications with runtime placement adaptation

Microservices are a popular method to design scalable cloud-based applications. Microservice-based applications (μApps) rely on message passing for communication and to decouple each microservice, allowing the lo...

Authors: Adalberto R. Sampaio Jr., Julia Rubin, Ivan Beschastnikh and Nelson S. Rosa

Adaptive placement & chaining of virtual network functions with NFV-PEAR

The design of flexible and efficient mechanisms for proper placement and chaining of virtual network functions (VNFs) is key for the success of Network Function Virtualization (NFV). Most state-of-the-art solu...

Authors: Gustavo Miotto, Marcelo Caggiani Luizelli, Weverton Luis da Costa Cordeiro and Luciano Paschoal Gaspary

SCOPE: self-adaptive and policy-based data management middleware for federated clouds

A federated cloud storage setup which integrates and utilizes storage resources from multiple cloud storage providers has become an increasingly popular and attractive paradigm for the persistence tier in clou...

Authors: Ansar Rafique, Dimitri Van Landuyt, Eddy Truyen, Vincent Reniers and Wouter Joosen

Pseudonymization risk analysis in distributed systems

In an era of big data, online services are becoming increasingly data-centric; they collect, process, analyze and anonymously disclose growing amounts of personal data in the form of pseudonymized data sets. I...

Authors: Geoffrey K. Neumann, Paul Grace, Daniel Burns and Mike Surridge

Networking architectures and protocols for smart city systems

The smart city model is used by many organizations for large cities around the world to significantly enhance and improve the quality of life of the inhabitants, improve the utilization of city resources, and ...

Authors: Imad Jawhar, Nader Mohamed and Jameela Al-Jaroodi

Is it possible to describe television series from online comments?

Due to the omnipresence of the Internet and Social Media in current society, it has become easy to find groups or communities of people discussing the most varied subjects in discussion forums, social network ...

Authors: Túlio C. Loures, Pedro O. S. Vaz de Melo and Adriano A. Veloso

The computer for the 21st century: present security & privacy challenges

Decades went by since Mark Weiser published his influential work on the computer of the 21st century. Over the years, some of the UbiComp features presented in that paper have been gradually adopted by industr...

Authors: Leonardo B. Oliveira, Fernando Magno Quintão Pereira, Rafael Misoczki, Diego F. Aranha, Fábio Borges, Michele Nogueira, Michelle Wangham, Min Wu and Jie Liu

Graph mining for the detection of overcrowding and waste of resources in public transport

The imbalance between the quantity of supply and demand in public transport systems causes a series of disruptions in large metropolises. While extremely crowded vehicles are uncomfortable for passengers, virt...

Authors: Carlos Caminha, Vasco Furtado, Vládia Pinheiro and Caio Ponte

A user-driven free speech application for anonymous and verified online, public group discourse

Online social networks are major hubs of communications that are used to share information by societies worldwide. However, the ability to freely communicate on these platforms is increasingly restricted in co...

Authors: Michael Nekrasov, Danny Iland, Miriam Metzger, Lisa Parks and Elizabeth Belding

Metrics for network power based on Castells’ Network Theory of Power: a case study on Brazilian elections

The identification of power groups that act within the political structure is a tool for citizens and also a challenging research topic as an unstable and complex force of interests system. This paper presents...

Authors: Letícia Verona, Jonice Oliveira, José Vitor da Cunha Hisse and Maria Luiza Machado Campos

Who is really in my social circle?

Tie strength allows to classify social relationships and identify different types of them. For instance, social relationships can be classified as persistent and similar based respectively on the regularity wi...

Authors: Jeancarlo C. Leão, Michele A. Brandão, Pedro O. S. Vaz de Melo and Alberto H. F. Laender

Self-adaptive authorisation in OpenStack cloud platform

Although major advances have been made in protection of cloud platforms against malicious attacks, little has been done regarding the protection of these platforms against insider threats. This paper looks int...

Authors: Carlos Eduardo Da Silva, Thomás Diniz, Nelio Cacho and Rogério de Lemos

Using sentiment analysis to define twitter political users’ classes and their homophily during the 2016 American presidential election

This paper proposes an analysis of political homophily among Twitter users during the 2016 American Presidential Election. We collected 4.9 million tweets of 18,450 users and their contact network from August ...

Authors: Josemar A. Caetano, Hélder S. Lima, Mateus F. Santos and Humberto T. Marques-Neto

Organizing for openness: six models for developer involvement in hybrid OSS projects

This article examines organization and governance of commercially influenced Open Source Software development communities by presenting a multiple-case study of six contemporary, hybrid OSS projects. The findi...

Authors: Hanna Mäenpää, Simo Mäkinen, Terhi Kilamo, Tommi Mikkonen, Tomi Männistö and Paavo Ritala

B-space: dynamic management and assurance of open systems of systems

Connected cars, freely configurable operating rooms, or autonomous harvesting fleets: dynamically emerging open systems of systems will shape a new generation of systems opening up a vast potential for new kin...

Authors: Daniel Schneider and Mario Trapp

Fog orchestration for the Internet of Everything: state-of-the-art and research challenges

Recent developments in telecommunications have allowed drawing new paradigms, including the Internet of Everything, to provide services by the interconnection of different physical devices enabling the exchang...

Authors: Karima Velasquez, David Perez Abreu, Marcio R. M. Assis, Carlos Senna, Diego F. Aranha, Luiz F. Bittencourt, Nuno Laranjeiro, Marilia Curado, Marco Vieira, Edmundo Monteiro and Edmundo Madeira

Conflict-free rerouting scheme through flow splitting for virtual networks using switches

The weaknesses of the Internet led to the creation of a new network paradigm – network virtualization. Virtualization is a very successful technique for sharing and reusing resources, which results in higher e...

Authors: Vianney Kengne Tchendji, Yannick Florian Yankam and Jean Frédéric Myoupo

A comprehensive survey on machine learning for networking: evolution, applications and research opportunities

Machine Learning (ML) has been enjoying an unprecedented surge in applications that solve problems and enable automation in diverse domains. Primarily, this is due to the explosion in the availability of data,...

Authors: Raouf Boutaba, Mohammad A. Salahuddin, Noura Limam, Sara Ayoubi, Nashid Shahriar, Felipe Estrada-Solano and Oscar M. Caicedo

A new approach to deploy a self-adaptive distributed firewall

Distributed firewall systems emerged with the proposal of protecting individual hosts against attacks originating from inside the network. In these systems, firewall rules are centrally created, then distribut...

Authors: Edmilson P. da Costa Júnior, Carlos Eduardo da Silva, Marcos Pinheiro and Silvio Sampaio

Insights on the large-scale deployment of a curated Web-of-Trust: the Debian project’s cryptographic keyring

The Debian project is one of the largest free software undertakings worldwide. It is geographically distributed, and participation in the project is done on a voluntary basis, without a single formal employee ...

Authors: Gunnar Wolf and Víctor González Quiroga

Recovering user-interactions of Rich Internet Applications through replaying of HTTP traces

In this paper, we study the “Session Reconstruction” problem which is the reconstruction of user interactions from recorded request/response logs of a session. The reconstruction is especially useful when the ...

Authors: Salman Hooshmand, Gregor V. Bochmann, Guy-Vincent Jourdan, Russell Couturier and Iosif-Viorel Onut

Thematic series on Verification and Composition for the Internet of Services and Things

The Internet of Services and Things is characterized as a distributed computing environment that will be populated by a large number of software services and things. Within this context, software systems will ...

Authors: Marco Autili, Dimitra Giannakopoulou and Massimo Tivoli

Security and privacy aware data aggregation on cloud computing

The use of cloud computing has become common due to advantages such as low cost and sizing of computing resources according to demand. However, it also raises security and privacy concerns, because critical da...

Authors: Leandro V. Silva, Pedro Barbosa, Rodolfo Marinho and Andrey Brito

EZ-AG: structure-free data aggregation in MANETs using push-assisted self-repelling random walks

This paper describes EZ-AG, a structure-free protocol for duplicate insensitive data aggregation in MANETs. The key idea in EZ-AG is to introduce a token that performs a self-repelling random walk in the netwo...

Authors: V. Kulathumani, M. Nakagawa and A. Arora

BROAD-RSI – educational recommender system using social networks interactions and linked data

There are several educational resources distributed in different repositories that address to a wide range of subjects and different educational goals. The proper choice of these educational resources is a cha...

Authors: Crystiam Kelle Pereira, Fernanda Campos, Victor Ströele, José Maria N. David and Regina Braga

Support mechanisms provided by FLOSS foundations and other entities

Foundations function as a vital institutional support infrastructure for many of the most successful open-source projects, but the different roles played by these support entities are understudied in Free/Libr...

Authors: Juho Lindman and Imed Hammouda

High-performance IP lookup using Intel Xeon Phi: a Bloom filters based approach

IP lookup is a core operation in packet forwarding, which is implemented using a Longest Prefix Matching (LPM) algorithm to find the next hop for an input address. This work proposes and evaluates the use of p...

Authors: Alexandre Lucchesi, André C. Drummond and George Teodoro

A controller design for mitigation of passive system identification attacks in networked control systems

The literature regarding attacks in Networked Control Systems (NCS) indicates that covert and accurate attacks must be designed based on an accurate knowledge about the model of the attacked system. In this co...

Authors: Alan O. de Sá, Luiz F. R. da Costa Carmo and Raphael C. S. Machado

Environment for integration of distributed heterogeneous computing systems

Connecting multiple and heterogeneous hardware devices to solve problems raises some challenges, especially in terms of interoperability and communications management. A distributed solution may offer many adv...

Authors: Thiago W. B. Silva, Daniel C. Morais, Halamo G. R. Andrade, Antonio M. N. Lima, Elmar U. K. Melcher and Alisson V. Brito

A framework for searching encrypted databases

Cloud computing is a ubiquitous paradigm responsible for a fundamental change in the way distributed computing is performed. The possibility to outsource the installation, maintenance and scalability of server...

Authors: Pedro G. M. R. Alves and Diego F. Aranha

Providing privacy on the tuple space model

Conceptually, tuple spaces are shared memory objects that provide operations to store and retrieve ordered sets of data, called tuples. Tuples stored in a tuple space are accessed by the contents of their fiel...

Authors: Edson Floriano, Eduardo Alchieri, Diego F. Aranha and Priscila Solis

Free and open source software development: the end of the teenage years

Authors: Igor Steinmacher, Gregorio Robles, Brian Fitzgerald and Anthony Wasserman

Design considerations for software-defined wireless networking in heterogeneous cloud radio access networks

The fifth generation (5G) cellular infrastructure is envisaged as a dense and heterogeneous deployment of small cells overlapping with existing macrocells in the Radio Access Network (RAN). Densification and h...

Authors: Marcelo A. Marotta, Maicon Kist, Juliano A. Wickboldt, Lisandro Z. Granville, Juergen Rochol and Cristiano B. Both

Design framework for reliable and environment aware management of smart environment devices

A smart environment is equipped with numerous devices (i.e., sensors, actuators) that are possibly distributed over different locations (e.g., rooms of a smart building). These devices are automatically contro...

Authors: Adja Ndeye Sylla, Maxime Louvel and Eric Rutten

Generative models of online discussion threads: state of the art and research challenges

Online discussion in form of written comments is a core component of many social media platforms. It has attracted increasing attention from academia, mainly because theories from social sciences can be explor...

Authors: Pablo Aragón, Vicenç Gómez, David García and Andreas Kaltenbrunner

Model-driven development of user interfaces for IoT systems via domain-specific components and patterns

Internet of Things technologies and applications are evolving and continuously gaining traction in all fields and environments, including homes, cities, services, industry and commercial enterprises. However, ...

Authors: Marco Brambilla, Eric Umuhoza and Roberto Acerbis

Smartphone-based outlier detection: a complex event processing approach for driving behavior detection

The majority of fatal car crashes are caused by reckless driving. With the sophistication of vehicle instrumentation, reckless maneuvers, such as abrupt turns, acceleration, and deceleration, can now be accura...

Authors: Igor Vasconcelos, Rafael Oliveira Vasconcelos, Bruno Olivieri, Marcos Roriz, Markus Endler and Methanias Colaço Junior

Herding cats in a FOSS ecosystem: a tale of communication and coordination for release management

Release management in large-scale software development projects requires significant communication and coordination. It is particularly challenging in Free and Open Source Software (FOSS) ecosystems, in which ...

Authors: Germán Poo-Caamaño, Eric Knauss, Leif Singer and Daniel M. German

Changes in free and open source software licenses: managerial interventions and variations on project attractiveness

The license adopted by an open source software is associated with its success in terms of attractiveness and maintenance of an active ecosystem of users, bug reporters, developers, and sponsors because what ca...

Authors: Carlos Denner dos Santos Jr

Greening emerging IT technologies: techniques and practices

The tremendous increase in global industrial activity has resulted in high utilization of natural energy resources and increase in global warming over the last few decades. Meanwhile, computing has become a po...

Authors: Junaid Shuja, Raja Wasim Ahmad, Abdullah Gani, Abdelmuttlib Ibrahim Abdalla Ahmed, Aisha Siddiqa, Kashif Nisar, Samee U. Khan and Albert Y. Zomaya

Core-periphery communication and the success of free/libre open source software projects

We examine the relationship between communications by core and peripheral members and Free/Libre Open Source Software project success. The study uses data from 74 projects in the Apache Software Foundation Inc...

Authors: Kevin Crowston and Ivan Shamshurin

Mapping the coverage of security controls in cyber insurance proposal forms

Policy discussions often assume that wider adoption of cyber insurance will promote information security best practice. However, this depends on the process that applicants need to go through to apply for cybe...

Authors: Daniel Woods, Ioannis Agrafiotis, Jason R. C. Nurse and Sadie Creese

Can FOSS projects benefit from integrating Kanban: a case study

Free and Open Source Software (FOSS) and Agile Software Development (ASD) have both been recognized as important software development methods; they have many success stories and share some similarities. Howeve...

Authors: Annemarie Harzl

A context-aware framework for dynamic composition of process fragments in the internet of services

In the last decade, many approaches to automated service composition have been proposed. However, most of them do not fully exploit the opportunities offered by the Internet of Services (IoS). In this article,...

Authors: Antonio Bucchiarone, Annapaola Marconi, Marco Pistore and Heorhi Raik

On organisational involvement and collaboration in W3C standards through editorship

Over time, a number of open standards have been developed and implemented in software for addressing a number of challenges, such as lock-in, interoperability and longevity of software systems and associated d...

Authors: Jonas Gamalielsson and Björn Lundell

Concurrency bugs in open source software: a case study

Concurrent programming puts demands on software debugging and testing, as concurrent software may exhibit problems not present in sequential software, e.g., deadlocks and race conditions. In aiming to increase...

Authors: Sara Abbaspour Asadollah, Daniel Sundmark, Sigrid Eldh and Hans Hansson

Structured I/O streams in Clive: a toolbox approach for wide area network computing

Most distributed applications and tools used in wide area networks and Cloud computing environments use the UNIX I/O framework. In this framework, processes use file descriptors for standard I/O and file acces...

Authors: Francisco J. Ballesteros

A framework for identifying the linkability between Web servers for enhanced internet computing and E-commerce

Existing Web session tracking techniques mainly work on huge web server log files, which limit their dynamicity and capability. We present a collaborative method for session tracking to identify direct and ind...

Authors: Hassan Artail, Ammar El Halabi, Ali Hachem and Louay Al-Akhrass