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Portuguese IT and LibreOffice open manual |
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Adriano Afonso |
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Pages: 1-2 |
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doi>10.1145/2316936.2316937 |
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Full text:  PDF |
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In this paper, it is described the evolution of the Portuguese IT and LibreOffice Open Manual from the 1st edition to the project of it’s 3rd edition. It also focuses the growth concerning IT availability in Portugal together with the needs of trainers and professors regarding open content. It finally addresses the relevance of the Creative Commons License and the importance of involving the network in these kind of projects.
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Open source workflow management systems for the internal audit process |
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Nádia Valls de Almeida, António Trigo |
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Pages: 3-10 |
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doi>10.1145/2316936.2316938 |
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Full text: PDF |
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The Internal Audit activity includes the analysis of activities and processes, which can and should be executed in a systematic and automated way through the use of Open Source Workflow Management Systems. The conducted study analyzed several Open Source Workflow Management Systems in order to find the most adequate to support the audit process and presents an example of its use, regarding the case of Internal Audit of the Purchase process.
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Open source unified communications: the new paradigm to cut costs and extend productivity |
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Fernando Almeida, José Cruz |
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Pages: 11-12 |
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doi>10.1145/2316936.2316939 |
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Full text: PDF |
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In this paper, we propose an architecture based on three layers (infrastructure, server hardware and operating system, and business applications) for a unified communications solutions exclusively sustained on open source technologies and open standards. Additionally, we discuss the importance of open standards and open source in a fully integrated communications solution, exposing some factors that a company should consider when choosing open source software.
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Proposing a system to support crowdsourcing |
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Manuela Aparicio, Carlos J. Costa, Andrew Simoes Braga |
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Pages: 13-17 |
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doi>10.1145/2316936.2316940 |
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Full text: PDF |
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In this paper, a conceptual framework is proposed, supported in the literature review, derived by identifying the main concepts related to crowdsourcing, as well as ways of improving group participation. We also propose a software solution that may be used to support the crowdsourcing process. This software solution is inspired by the conceptual framework.
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Macroeconomics leverage trough open source |
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Manuela Aparicio, Carlos J. Costa |
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Pages: 19-24 |
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doi>10.1145/2316936.2316941 |
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Full text: PDF |
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In this paper, we describe the macro-economical factors that are influenced by the public and government sector adoption of open source. This paper presents these factors grouped in two dimensions: financial and economical. It is presented a literature review related to these dimensions. It is also presented here some results carried out by multiple studies.
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A solution to support student learning of programming |
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Carlos J. Costa, Manuela Aparicio, Carlos Cordeiro |
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Pages: 25-29 |
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doi>10.1145/2316936.2316942 |
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Full text: PDF |
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In this paper, we analyze the use of robotics to improve student learning of computer programming. We began by identifying the learning challenges and possible solutions. Then we proposed a framework (dragon-robot), and analyze its impact on student learning. Supported in this situation, we propose a solution.
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Using open source for forensic purposes |
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Manuel Delgado, Manuela Aparicio, Carlos Costa |
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Pages: 31-37 |
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doi>10.1145/2316936.2316943 |
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Full text: PDF |
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This article provides an overview of the basic digital forensic process. In different contexts of crime, the use of “computer forensics” is a usual way to gather evidence. Digital data is collected and analyzed in order to be presented in court as evidence of illegal activities. This is already a first-line option in most cases for criminal investigation. For some types of crime, particularly economic and financial research focuses on the storage devices.
In the context of a crime, create and certify a full Image of suspect devices is vital to preserve its integrity. The disk image, take sector by sector copy usually for forensic purposes, and as such will contain some mechanism (internal verification) to prove that the copy is accurate and has not changed. In this work we present some Open Source tools to perform an effective role in computer forensics, which ensure the realization of these images, fulfilling all the requirements, so that any evidence recovered from his analysis, may be admitted in court.
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Patient health portal: a calendar paradigm |
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João Paulo Figueiredo, Carlos J. Costa, Manuela Aparicio |
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Pages: 39-44 |
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doi>10.1145/2316936.2316944 |
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Full text: PDF |
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In this paper, we propose a conceptual model of a patient health portal based on a calendar paradigm. The study begins with a literature review on health portals and their stakeholders. Then, to support the proposed concept, we made an analysis of the state of the art in health portals and their main features. We propose a conceptual model for a user centered health portal and its needs. We also make an implementation of the conceptual model in an open source content management system (Drupal). Our study does also include the preliminary results of a survey to a group of key users.
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Information aggregation in an entrepreneurship portal |
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Rui Figueiredo, Carlos J. Costa, Manuela Aparicio |
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Pages: 45-50 |
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doi>10.1145/2316936.2316945 |
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Full text: PDF |
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This study can be applied in multiple contexts. The main focus is to demonstrate the ability to gather information from multiple sources, using open source platforms and technologies for publishing information. In this paper, we purpose a conceptual model to an entrepreneurship portal based on a search engine paradigm. Here it is purposed model derived from the literature and validated using open source technology. In this study we propose an open source platform That aggregates information from Various sources, organizing the information needed. On this platform the main task is to gather information from Several sources, using publishing technologies. Described in this paper it multiple scenarios Applied to an entrepreneurship portal.
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How to (crowd-)fund and manage the (user-)innovation: the case of Big Buck Bunny |
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Massimiliano Gambardella |
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Pages: 51-56 |
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doi>10.1145/2316936.2316946 |
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Full text: PDF |
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It seems a non-sense for an economist that a producer assembles, manages and pays a temporary team of experts to create a product that will be freely available for customers. It seems a non-sense that professional artists and developers decide to work underpaid. It seems a further non-sense that customers decide to pre-order (or order) and pay for a DVD copy of this movie despite they know that it will be (or it is already) freely available (by download) and freely recordable. To understand why it happens, we conducted a case study focused on the production of the movie called Big Buck Bunny. Than, using Creative Commons and User-Innovation theory we propose a model that explains how a producer can manage Intellectual Propriety Right and community of users to identify needs and absorb innovations.
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Educational computer programming tools |
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Martinha Piteira, Carlos Costa, Samir R. Haddad |
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Pages: 57-60 |
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doi>10.1145/2316936.2316947 |
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Full text: PDF |
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Learn programming is a challenging task for many students. Based on this complex challenge educators face problems with unmotivated students and high level drop-out. Technological and pedagogical strategies are recommended to overcome these issues. Technological strategies for instance use educational tools to support teach and learn computer programming topics.
Based on these issues were defined the followings objectives for this work: 1) educational computer programming tools identification; 2) tools categorization 3) Programming concepts tools identification; 4) Related the low and high level comprehension computer programming topics with educational tools.
To achieve the objectives was performed an extensive online search by educational computer programming tools.
The aim of this work in progress is the identification of the main tools and his characterization.
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Cloud services evaluation framework |
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Miguel Reixa, Carlos Costa, Manuela Aparicio |
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Pages: 61-69 |
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doi>10.1145/2316936.2316948 |
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Full text: PDF |
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This paper intends to propose an easy and quick methodology to compare and choose the cloud service that best fit the small size organization needs. Approach strategies and methodologies were studied and chosen the most relevant to meet objective. Cloud computing characteristics, definitions, organization types, classifications and important taxonomy were chosen in the literature to give basic understanding it. In this work is presented one practical application to illustrate how to use it. Using this methodology, small size organizations can optimise their resources and at the same time be confidante to select the best cloud service option.
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Comparing onset detection methods based on spectral features |
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Carlos Rosão, Ricardo Ribeiro, David Martins de Matos |
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Pages: 71-78 |
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doi>10.1145/2316936.2316949 |
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Full text: PDF |
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Onset Detection, the quest for finding transient regions in the audio signal, has been an active research subject as note onset detection is commonly used as a first step in high-level music processing techniques. In this paper, we review several Onset Detection methods using spectral features such as magnitude, phase and complex domain representation, and compare their performances when considering several types of musical signals belonging to a publicly available dataset. Our results show that the accuracy of onset detection varies clearly between onset types and between detection functions used, as well as between performance techniques.
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Open source operating system for students: EOS Project |
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João Dias, Sandro Tavares, Amparo Carvas, Pedro Sá Silva |
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Pages: 79-83 |
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doi>10.1145/2316936.2316950 |
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Full text: PDF |
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The Education Operating Systems (EOS) Project is a free, customized Operating System with essential features for undergraduate students of Coimbra College of Education. Based on Linux Ubuntu OS, the EOS Project has pre-installed the necessary software needed throughout the course, new Graphical User Interface and has developed USB and Live-CD distributions to simplify the installation process. Extensive formal documentation and video tutorials were developed to improve the user’s experience.
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Porting GeoServer to Linux environment and applicability to mobile ad hoc networks |
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Valentina Timcenko, Borislav Djordjevic, Mirjana Stojanovic |
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Pages: 85-91 |
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doi>10.1145/2316936.2316951 |
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Full text: PDF |
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This paper provides a method of porting GeoServer GIS application to various Linux distributions, with special focus to Ubuntu and Fedora. Unlike in the case of MS Windows and MacOS X systems, when coming to Linux, there is no universal user-friendly GeoServer installer. This paper presents a proposition of installation steps for enabling proper working conditions of GeoServer application in Linux environment. The proposed methodology encompasses an overview of installation, user access rights settings, testing and troubleshooting activities. It also puts the light on the advantages of Linux as a GeoServer platform, with regard to other operating system platforms and discuses its applicability to mobile ad hoc networks.
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The impact of pause duration to performance of AODV protocol in simulated urban environment |
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Valentina Timcenko, Mirjana Stojanovic, Aleksandra Kostic-Ljubisavljevic, Vesna Radonjic, Vuk Dulovic |
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Pages: 93-97 |
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doi>10.1145/2316936.2316952 |
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Full text: PDF |
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This paper analyzes the impact of duration and probability of pause generation in the nodes movement to the performance of Ad hoc On-demand Distance Vector (AODV) routing protocol in mobile ad hoc networks in the urban environment. The Manhattan Grid mobility model has been assumed, generated by the Simulator of Urban MObility (SUMO). A comprehensive analysis, based on the network simulator ns-2, investigates packet delivery fraction, end-to-end delay and routing protocol overhead.
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Massive open online courses (MOOCs): educational innovation or threat to higher education? |
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Brad Mehlenbacher |
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Pages: 99-99 |
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doi>10.1145/2316936.2316953 |
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MOOCs are receiving the intense attention of the media and, in turn, of academic and industry researchers fascinated by their potential to revolutionize educational access and life-long learning. The presentation introduces MOOCs and traces their history and development both inside and outside the academy. This leads to an overview of documented strengths of MOOCs as elaborated upon by various educational technology futurists. These futurists and media accounts make it difficult to argue against taking up the charge and contributing to the next great educational wave. Still, as exciting as these promises and potentials are, I want also to describe the various challenges presented by MOOCs, challenges for learners, instructors and faculty, educational administrators and educational institutions in general. And the stakes for these developments can’t be underestimated. Google, MIT, Georgia Tech, Stanford, and many others are investing millions of dollars in MOOC initiatives and start-ups. Investing in what has been called “the single biggest change in education since the printing press.”.
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EuroSIGDOC 