MARVIN: a medical research application framework based on open source software

This paper describes the open source framework MARVIN for rapid application development in the field of biomedical and clinical research. MARVIN applications consist of modules that can be plugged together in order to provide the functionality required for a specific experimental scenario. Application modules work on a common patient database that is used to store and organize medical data as well as derived data. MARVIN provides a flexible input/output system with support for many file formats including DICOM, various 2D image formats and surface mesh data. Furthermore, it implements an advanced visualization system and interfaces to a wide range of 3D tracking hardware. Since it uses only highly portable libraries, MARVIN applications run on Unix/Linux, Mac OS X and Microsoft Windows.

Model Driven Architecture (MDA): Integration and Model Reuse for Open Source eLearning Platforms

Open Source (OS) community offers numerous eLearning platforms of both types: Learning Management Systems (LMS) and Learning Content Systems (LCS). General purpose OS intermediaries such as SourceForge, ObjectWeb, Apache or specialized intermediaries like CampusSource reduce the cost to locate such eLearning platforms. Still, it is impossible to directly compare the functionalities of those OS software products without performing detailed testing on each product. Some articles available from eLearning Wikipedia show comparisons between eLearning platforms which can help, but at the end they barely serve as documentation which are becoming out of date quickly [1]. The absence of integration activities between OS eLearning platforms - which are sometimes quite similar in terms of functionalities and implementation technologies - is sometimes critical since most of the OS projects possess small financial and human resources. This paper shows a possible solution for these barriers of OS eLearning platforms. We propose the Model Driven Architecture (MDA) concept to capture functionalities and to identify similarities between available OS eLearning platforms. This contribution evolved from a fruitful discussion at the 2nd CampusSource Developer Conference at the University of Muenster (27th August 2004).

Towards an Open Source Framework for Collaborative Problem-Based Learning Environments

This paper presents our research works in the domain of Collaborative Environments centred on Problem Based Learning (PBL) and taking advantage of existing Electronic Documents. We first present the modelling and engineering problems that we want to address; then we discuss technological issues of such a research particularly the use of OpenUSS and of the Enterprise Java Open Source Architecture (EJOSA) to implement such collaborative PBL environments.

Open Source und Kartellrecht

„Open source and European antitrust laws: An analysis of copyleft and the prohibition of software license fees on the basis of art. 101 TFEU and the block exemptions“ Open source software and open source licenses (like the GNU GPL) are not only relevant for computer nerds or activists – they are already business. They are for example the fundament of LINUX, the only real rival of MICROSOFT’s WINDOWS-line in the field of operating systems for IBM PC compatibles. Art. 101 TFEU (like the identical predecessor art. 81 TEC) as part of the EU antitrust laws prohibits contract terms like price fixing and some forms of technology control. Are copyleft – the „viral effect“, the „cancer“ – and the interdiction of software license fees in the cross hairs of this legal rule? On the other side the European Union has since 2004 a new Technology Transfer Block Exemption with software license agreements for the first time in its scope: a safe harbour and a dry place under a umbrella for open source software? After the introduction (A) with a description of open source software the following text analyses the system of the European Unions competition law respectivley antitrust law and the requirements of the block exemptions (B). Starting point of antitrust analysis are undertakings – but who are the untertakings (C) in the field of widespread, independent developers as part of the „bazar organization“? To see how much open source has to fear from the law of the European Union, at the end the anti competitive and pro competitive effects of open source are totalized within the legal framework (D). The conclusion (E) shows: not nothing, but not much.

Open Source Studie Schweiz 2015

Die vierte Ausgabe der Open Source Schweiz Studie beschreibt die Erfahrungen und Meinungen von 200 Schweizer Organisationen mit Open Source Software. 38 Behörden, 98 ICT-Unternehmen sowie 64 Firmen und Organisationen aus anderen Branchen haben Einblick gegeben, wie und weshalb sie Open Source Software einsetzen und wo die Hindernisse liegen.

Sampling in Open Source Software Development: The case for using the Debian GNUILinux Distribution

Research on open source software (OSS) projects often focuses on the SourceForge collaboration platform. We argue that a GNU/Linwr distribution, such as Debian, is better suited for the sampling ofprojects because it avoids biases and contains unique information only available in an integrated environment. Especially research on the reuse of components can build on dependency information inherent in the Debian GNU/Linux packaging system. This paper therefore contributes to the practice of sampling methods in OSS research and provides empirical data on reuse dependencies in Debian.

Construcción de repositorios institucionales open source con Software Greenstone

Se aborda la construcción de repositorios institucionales open source con Software Greenstone. Se realiza un recorrido teórico y otro modélico desarrollando en él una aplicación práctica. El primer recorrido, que constituye el marco teórico, comprende una descripción, de: la filosofía open access (acceso abierto) y open source (código abierto) para la creación de repositorios institucionales. También abarca en líneas generales las temáticas relacionadas al protocolo OAI, el marco legal en lo que hace a la propiedad intelectual, las licencias y una aproximación a los metadatos. En el mismo recorrido se abordan aspectos teóricos de los repositorios institucionales: acepciones, beneficios, tipos, componentes intervinientes, herramientas open source para la creación de repositorios, descripción de las herramientas y finalmente, la descripción ampliada del Software Greenstone; elegido para el desarrollo modélico del repositorio institucional colocado en un demostrativo digital. El segundo recorrido, correspondiente al desarrollo modélico, incluye por un lado el modelo en sí del repositorio con el Software Greenstone; detallándose aquí uno a uno los componentes que lo conforman. Es el insumo teórico-práctico para el diseño -paso a paso- del repositorio institucional. Por otro lado, se incluye el resultado de la modelización, es decir el repositorio creado, el cual es exportado en entorno web a un soporte digital para su visibilización. El diseño del repositorio, paso a paso, constituye el núcleo sustantivo de aportes de este trabajo de tesina

Construcción de repositorios institucionales open source con Software Greenstone

Se aborda la construcción de repositorios institucionales open source con Software Greenstone. Se realiza un recorrido teórico y otro modélico desarrollando en él una aplicación práctica. El primer recorrido, que constituye el marco teórico, comprende una descripción, de: la filosofía open access (acceso abierto) y open source (código abierto) para la creación de repositorios institucionales. También abarca en líneas generales las temáticas relacionadas al protocolo OAI, el marco legal en lo que hace a la propiedad intelectual, las licencias y una aproximación a los metadatos. En el mismo recorrido se abordan aspectos teóricos de los repositorios institucionales: acepciones, beneficios, tipos, componentes intervinientes, herramientas open source para la creación de repositorios, descripción de las herramientas y finalmente, la descripción ampliada del Software Greenstone; elegido para el desarrollo modélico del repositorio institucional colocado en un demostrativo digital. El segundo recorrido, correspondiente al desarrollo modélico, incluye por un lado el modelo en sí del repositorio con el Software Greenstone; detallándose aquí uno a uno los componentes que lo conforman. Es el insumo teórico-práctico para el diseño -paso a paso- del repositorio institucional. Por otro lado, se incluye el resultado de la modelización, es decir el repositorio creado, el cual es exportado en entorno web a un soporte digital para su visibilización. El diseño del repositorio, paso a paso, constituye el núcleo sustantivo de aportes de este trabajo de tesina

A Model-based Repository for Open Source Service and Component Integration.

Open source is a software development paradigm that has seen a huge rise in recent years. It reduces IT costs and time to market, while increasing security and reliability. However, the difficulty in integrating developments from different communities and stakeholders prevents this model from reaching its full potential. This is mainly due to the challenge of determining and locating the correct dependencies for a given software artifact. To solve this problem we propose the development of an extensible software component repository based upon models. This repository should be capable of solving the dependencies between several components and work with already existing repositories to access the needed artifacts transparently. This repository will also be easily expandable, enabling the creation of modules that support new kinds of dependencies or other existing repository technologies. The proposed solution will work with OSGi components and use OSGi itself.