Die Diplomarbeit stellt einen innovativen und leichtgewichtigen Modellierungsansatz zur Beschreibung interaktiver, dienstbasierter Anwendungen auf Basis von Dienstannotationen vor.

Die Diplomarbeit stellt einen innovativen und leichtgewichtigen Modellierungsansatz zur Beschreibung interaktiver, dienstbasierter Anwendungen auf Basis von Dienstannotationen vor.

Virtuelle Umgebungen werden seit einigen Jahren erfolgreich für die motorische Rehabilitation von PatientInnen nach einem Schlaganfall eingesetzt. Moderne Sensoren erfassen die Bewegungen der PatientInnen und stellen die Informationen digitalisiert für die weitere Verarbeitung bereit. In einer computergenerierten Welt wird dann die Durchführung motorischer Übungen visualisiert und mit motivierenden, spielerischen Elementen angereichert. Heute verfügbare Systeme zeigen vor allem natürlich anmutende Umgebungen an, in denen mit realistischen Objekten interagiert wird. Beispielsweise kann die Aufgabenstellung für die PatientInnen sein, heranfliegende Spielbälle über die Steuerung virtueller Arme zu fangen. Das Potential des digitalen Mediums für die Gestaltung virtueller Welten wird bislang jedoch noch nicht vollständig ausgenutzt. Neuere Erkenntnisse über die neurologischen Prozesse motorischer Aktionen führten zur Entwicklung eines therapeutischen Verfahrens, bei dem die visuelle Wahrnehmung von Bewegungen die betroffenen Hirnregionen von SchlaganfallpatientInnen trainiert. Hierfür ist die Verwendung virtueller Umgebungen besonders vielversprechend, weil die Bewegungsvisualisierungen durch algorithmische Transformationen beliebig gestaltet werden können. Abstrakte und ästhetisch ansprechende Darstellungsformen können die wesentlichen Bewegungsinformationen enthalten und die Durchführung der Übungen gleichzeitig interessant und motivierend erscheinen lassen. In der vorliegenden Arbeit wurde daher ein Therapiesystem entwickelt, welches abstrakte visuelle Effekte als Reaktion auf Bewegungen anzeigt. PatientInnen nach einem Schlaganfall trainieren mit diesem System die motorischen Fähigkeiten ihrer oberen Extremitäten. Die virtuelle Umgebung kann dabei die Effekte sowohl entsprechend der Bewegungen der beiden Körperseiten anzeigen oder aber die Bewegungen der gesunden Körperseite im Sinne einer Spiegelung zusätzlich für die Darstellung auf der betroffenen Seite verwenden. Bei der zweiten Variante, der Spiegelung, wird eine Illusion von korrekter Bewegungsausführung auf der betroffenen Seite erzeugt. Diese unterstützt die motorische Rehabilitation. In einer Pilotstudie im klinischen Kontext erwies sich das Therapiesystem als einsetzbar und die Ergebnisse deuteten auf positive Effekte des Trainings auf die motorische Rehabilitation, die Motivation und das Selbstbewusstsein der PatientInnen hin. Damit demonstriert die Arbeit das Potential einer an den intrinsischen Eigenschaften des digitalen Mediums orientierten Gestaltung von Bewegungsvisualisierungen für die neurologische Rehabilitation. Eine solche Gestaltung ermöglicht es, völlig neue und effektive Therapieformen anzubieten, die ohne den Einsatz der Technologie nicht realisierbar wären.

In dieser Arbeit wollte ich einen Vergleich zwischen dem toten und lebendigen Materialen schaffen. Dafür habe ich mit Zement eine Skulptur von intuitiver und abstrakter Form geschaffen und darauf Moos eingepflanzt. Dadurch habe ich gehofft, dass diese Skulptur wie ein natürliches Objekt aussehen würde.

The challenge to create learning environments that could promote learning is an aspect which currently enjoys much attention in the higher education environment. According to the outcomes based approach, learners are required to be equipped with relevant and applicable skills when entering the workforce on completion of their studies. With this as background, this study investigated the applicability of experiential learning as an approach that could enable learners to make optimal use of changing learning environments. Experiential learning mainly takes place through learners’ exposure to concrete experiences which are then critically reflected upon. The concept of action learning is often used as synonym for experiential learning, as the principles underlying these concepts and the philosophical assumptions are the same. Service learning is an application field of experiential learning that differs from the traditional learning approach. Learners learn from their exposure to learning experiences, whereas service rendering takes place simultaneously. In this study attention will be paid to the importance of reflection in the learning process. On completion of the learning experience learners critically investigate their own values, preconceptions, insights they have gained in the process and actions. The reflective learning process gives learners the opportunity to monitor their own learning objectives, to enhance insight and understanding and observe the interaction between theory and practice. In addition to this the process allows them to optimise human potential by applying what they have learned. According to the process followed in this study, learners have developed and implemented certain psycho-social interventions in collaboration with a specific community. At the start of the process learners were requested to keep their dairies up to date and use these to reflect on any aspect of their learning experience. With the consent of the learners a quantitative analysis was done of the content of their dairies and certain themes have manifested. The main themes that have been identified refer to the experiences during the development and implementation of the intervention and these relate mainly to the learning facilitator. Initially learners were quite dependent on familiar structures but once they became more at ease with the process, they were able to observe and manage the process with greater freedom. One aspect that is prominent in this study is the significance of group processes - not only for the individual learner, but also as part of the greater environment. Learners were specifically challenged to manage the unpredictability of the various processes – something which has required greater adaptability and leniency of learners. Learners’ reflections on the achievement of learning outcomes centre on opportunities to practically apply their theoretical knowledge. In many learners the interaction between theory and practice has resulted in the expansion of their cognitive content. Many references were also made to the improvement of life skills which relate specifically to the group processes and personal enrichment. A reflective attitude in a learning environment facilitates opportunities for learners to build on their current knowledge and develop a greater emotive conscience of the various processes and people involved in the learning environment. In addition to this individual life skills can also become more prominent. Reflection on learning experiences is a critical component by which learners could make sense of their experiences and apply their knowledge, emphasise the greater environment and support the interaction between people and the self as part of the learning process. / Dissertation (MA (Research Psychology))--University of Pretoria, 2008. / Psychology / unrestricted

The benefits of Model-Driven Software Development (MDSD) and Domain-Specific Languages (DSLs) wrt. efficiency and quality in software engineering increase the demand for custom languages and the need for efficient methods for language engineering. This motivated the introduction of language families that aim at further reducing the development costs and the maintenance effort for custom languages. The basic idea is to exploit the commonalities and provide means to enable systematic variation among a set of related languages. Current techniques and methodologies for language engineering are not prepared to deal with the particular challenges of language families. First, language engineering processes lack means for a systematic analysis, specification and management of variability as found in language families. Second, technical approaches for a modular specification and realisation of languages suffer from insufficient modularity properties. They lack means for information hiding, for explicit module interfaces, for loose coupling, and for flexible module integration. Our first contribution, Feature-Oriented Language Family Engineering (LFE), adapts methods from Software Product Line Engineering to the domain of language engineering. It extends Feature-Oriented Software Development to support metamodelling approaches used for language engineering and replaces state-of-the-art processes by a variability- and reuse-oriented LFE process. Feature-oriented techniques are used as means for systematic variability analysis, variability management, language variant specification, and the automatic derivation of custom language variants. Our second contribution, Integrative Role-Based Language Composition, extends existing metamodelling approaches with roles. Role models introduce enhanced modularity for object-oriented specifications like abstract syntax metamodels. We introduce a role-based language for the specification of language components, a role-based composition language, and an extensible composition system to evaluate role-based language composition programs. The composition system introduces integrative, grey-box composition techniques for language syntax and semantics that realise the statics and dynamics of role composition, respectively. To evaluate the introduced approaches and to show their applicability, we apply them in three major case studies. First, we use feature-oriented LFE to implement a language family for the ontology language OWL. Second, we employ role-based language composition to realise a component-based version of the language OCL. Third, we apply both approaches in combination for the development of SumUp, a family of languages for mathematical equations.

The benefits of Model-Driven Software Development (MDSD) and Domain-Specific Languages (DSLs) wrt. efficiency and quality in software engineering increase the demand for custom languages and the need for efficient methods for language engineering. This motivated the introduction of language families that aim at further reducing the development costs and the maintenance effort for custom languages. The basic idea is to exploit the commonalities and provide means to enable systematic variation among a set of related languages. Current techniques and methodologies for language engineering are not prepared to deal with the particular challenges of language families. First, language engineering processes lack means for a systematic analysis, specification and management of variability as found in language families. Second, technical approaches for a modular specification and realisation of languages suffer from insufficient modularity properties. They lack means for information hiding, for explicit module interfaces, for loose coupling, and for flexible module integration. Our first contribution, Feature-Oriented Language Family Engineering (LFE), adapts methods from Software Product Line Engineering to the domain of language engineering. It extends Feature-Oriented Software Development to support metamodelling approaches used for language engineering and replaces state-of-the-art processes by a variability- and reuse-oriented LFE process. Feature-oriented techniques are used as means for systematic variability analysis, variability management, language variant specification, and the automatic derivation of custom language variants. Our second contribution, Integrative Role-Based Language Composition, extends existing metamodelling approaches with roles. Role models introduce enhanced modularity for object-oriented specifications like abstract syntax metamodels. We introduce a role-based language for the specification of language components, a role-based composition language, and an extensible composition system to evaluate role-based language composition programs. The composition system introduces integrative, grey-box composition techniques for language syntax and semantics that realise the statics and dynamics of role composition, respectively. To evaluate the introduced approaches and to show their applicability, we apply them in three major case studies. First, we use feature-oriented LFE to implement a language family for the ontology language OWL. Second, we employ role-based language composition to realise a component-based version of the language OCL. Third, we apply both approaches in combination for the development of SumUp, a family of languages for mathematical equations.:1. Introduction 1.1. The Omnipresence of Language Families 1.2. Challenges for Language Family Engineering 1.3. Language Family Engineering with Features and Role-Based Composition 2. Review of Current Language Engineering 2.1. Language Engineering Processes 2.1.1. Analysis Phase 2.1.2. Design Phase 2.1.3. Implementation Phase 2.1.4. Applicability in Language Family Engineering 2.1.5. Requirements for an Enhanced LFE Process 2.2. Technical Approaches in Language Engineering 2.2.1. Specification of Abstract Syntax 2.2.2. Specification of Concrete Syntax 2.2.3. Specification of Semantics 2.2.4. Requirements for an Enhanced LFE Technique 3. Feature-Oriented Language Family Engineering 3.1. Foundations of Feature-Oriented SPLE 3.1.1. Introduction to SPLE 3.1.2. Feature-Oriented Software Development 3.2. Feature-Oriented Language Family Engineering 3.2.1. Variability and Variant Specification in LFE 3.2.2. Product-Line Realisation, Mapping and Variant Derivation for LFE 3.3. Case Study: Scalability in Ontology Specification, Evaluation and Application 3.3.1. Review of Evolution, Customisation and Combination in the OWL LanguageFamily 3.3.2. Application of Feature-Oriented Language Family Engineering for OWL 3.4. Discussion 3.4.1. Contributions 3.4.2. Related Work. 3.4.3. Conclusion 4. Integrative, Role-Based Composition for Language Family Engineering 4.1. Foundations of Role-Based Modelling. 4.1.1. Information Hiding and Interface Specification in Role Models 4.1.2. Loose Coupling and Flexible Integration in Role Composition 4.2. The LanGems Language Composition System 4.2.1. The Language Component Specification Language . 4.2.2. TheLanguageCompositionLanguage 4.2.3. TechniquesofLanguageComposition 4.3. Case Study: Component-based OCL 4.3.1. Role-Based OCL Modularisation 4.3.2. Role-Based OCL Composition 4.4. Discussion 4.4.1. Contributions 4.4.2. Related Work 4.4.3. Conclusion 5. LFE with Integrative, Role-Based Syntax and Semantics Composition 5.1. Integrating Features and Roles 5.2. SumUp Case Study 5.2.1. Motivation 5.2.2. Feature-Oriented Variability and Variant Specification 5.2.3. Role-Based Component Realisation 5.2.4. Feature-Oriented Variability and Variant Evolution 5.2.5. Model-driven Concrete Syntax Realisation 5.2.6. Model-driven Semantics Realisation 5.2.7. Role-Based Composition and Feature Mapping 5.2.8. Language Variant Derivation 5.3. Conclusion 6. Conclusion 6.1. Contributions 6.2. Outlook 6.2.1. Co-Evolution in Language Families 6.2.2. Role-Based Tool Integration. 6.2.3. Automatic Modularisation of Existing Language Families 6.2.4. Language Component Library Appendix A Appendix B Bibliography