Recuperação de informação multimédia em memórias pessoais

Dissertação apresentada para a obtenção do Grau de Doutor em Informática pela Universidade Nova de Lisboa, Faculdade de Ciências e TecnologiaEsta dissertação descreve soluções para a recuperação e anotação de informação multimédia em memórias pessoais. Estas propostas incluem métodos de recuperação e anotação de fotografias,baseados na extracção de informação semântica em imagens, e aplicações de recuperação e anotação em três cenários diferentes: ambientes domésticos, cenários móveis e em actividades de entretenimento. Os métodos propostos para recuperar e anotar fotos utilizam informação multimodal, nomeadamente,características visuais, informação de áudio e metadados contextuais obtidos no instante de captura. Esta metodologia baseia-se na análise semântica de imagens, obtida utilizando estes dados, para recuperar e anotar imagens automaticamente. Os metadados contextuais utilizados são o instante de captura da foto e a sua localização geográfica. Para ambientes domésticos, é proposta uma aplicação para partilha de momentos relevantes do passado baseada na pesquisa e visualização de fotos pessoais. A interface inclui uma linguagem visual baseada em ícones para definir a pesquisa e permite interrogar a colecção pessoal com objectos físicos. Para cenários móveis, nomeadamente em actividades turísticas, é descrita uma aplicação para partilha de fotos no momento da visita a locais de interesse, por exemplo, museus ou lugares históricos. A partilha de imagens é baseada no método de recuperação proposto. A aplicação permite a captura de fotografias e a sua anotação com informação de áudio obtida segundos após a captura e com coordenadas de localização geográfica obtidas pelo receptor GPS (Global Positioning System) incluído. Para corrigir erros produzidos pelo método automático de recuperação e anotação é proposta uma aplicação para anotação semiautomática de imagens. Esta aplicação inclui um jogo de computador para anotar imagens baseado numa interface gestual de modo a motivar os utilizadores para a tarefa da anotação. A tese apresenta as soluções referidas descrevendo a metodologia de concepção utilizada no desenvolvimento das aplicações, incluindo os resultados obtidos nos testes de usabilidade efectuados. São também apresentados e discutidos resultados da avaliação efectuada para validar os métodos de recuperação e anotação em cada uma das aplicações

Mobile Learning using Mixed Reality Games and a Conversational, Instructional and Motivational Paradigm. Design and implementation of technical language learning mobile games for the developing world with special attention to mixed reality games for the realization of a conversational, instructional and motivational paradigm.

Mobile learning has significant potential to be very influential in further and higher education. In this research a new definition for Mobile Educational Mixed Reality Games (MEMRG) is proposed based on a mobile learning environment. A questionnaire and a quantifying scale are utilised to assist the game developers in designing a MEMRG. A ¿Conversational Framework¿ is proposed as an appropriate psycho-pedagogical approach to teaching and learning for MEMRG. This methodology is based on the theme of a ¿conversation¿ between different actors of the learning community with the objective of building the architectural framework for MEMRG. Various elements responsible for instructing and motivating learners in educational games are utilised in an instructional-motivational model. User interface design for the games incorporates an efficient navigation system that uses contextual information, and allows the players to move seamlessly between real and virtual worlds. The implementation of MEMRG using the Java 2 Micro Edition (J2ME) platform iii is presented. The hardware and software specification for the MEMRG implementation and deployment are also discussed. MEMRG has produced improvements in the different cognitive processes of the learner, and also produced a deeper level of learning through enculturation, externalising ideas, and socialising. Learners¿ enjoyment, involvement, motivation, autonomy and metacognition skills have improved. This research will assist developers and teachers to gain an insight into learning paradigms which utilise mobile game environments that are formed by mixing real and virtual spaces, and provide them with a vision for effectively incorporating these games into formal and informal classroom sessions

Semantic Audio Analysis Utilities and Applications.

PhDExtraction, representation, organisation and application of metadata about audio recordings are in the concern of semantic audio analysis. Our broad interpretation, aligned with recent developments in the field, includes methodological aspects of semantic audio, such as those related to information management, knowledge representation and applications of the extracted information. In particular, we look at how Semantic Web technologies may be used to enhance information management practices in two audio related areas: music informatics and music production. In the first area, we are concerned with music information retrieval (MIR) and related research. We examine how structured data may be used to support reproducibility and provenance of extracted information, and aim to support multi-modality and context adaptation in the analysis. In creative music production, our goals can be summarised as follows: O↵-the-shelf sound editors do not hold appropriately structured information about the edited material, thus human-computer interaction is inefficient. We believe that recent developments in sound analysis and music understanding are capable of bringing about significant improvements in the music production workflow. Providing visual cues related to music structure can serve as an example of intelligent, context-dependent functionality. The central contributions of this work are a Semantic Web ontology for describing recording studios, including a model of technological artefacts used in music production, methodologies for collecting data about music production workflows and describing the work of audio engineers which facilitates capturing their contribution to music production, and finally a framework for creating Web-based applications for automated audio analysis. This has applications demonstrating how Semantic Web technologies and ontologies can facilitate interoperability between music research tools, and the creation of semantic audio software, for instance, for music recommendation, temperament estimation or multi-modal music tutorin

Modelli e metodologie innovative per una soluzione di e-learning e knowledge management

2009 - 2010Il tema intorno al quale si concentrano le attività di ricerca svolte è IWT – Intelligent Web Teacher – un’innovativa piattaforma per l’apprendimento a distanza e, più in generale, per la rappresentazione e la gestione della conoscenza nata grazie alle esperienze nei progetti di ricerca nazionali ed internazionali del Polo di Eccellenza in Learning & Knowledge dell’Università di Salerno. IWT offre, come principale caratteristica distintiva, la capacità di erogare corsi personalizzati che, tenendo conto delle caratteristiche degli utenti e garantendo flessibilità al livello dei contenuti e dei modelli di apprendimento, risultano più efficaci ed efficienti dei percorsi formativi statici di e-learning “classico”. La capacità di erogare corsi personalizzati si basa fondamentalmente su una sofisticata modellazione sia della conoscenza dei domini di interesse e dei contenuti effettuata grazie ad ontologie e metadata, sia delle competenze acquisite e delle preferenze didattiche dell’utente per mezzo di un profilo utente che viene costantemente aggiornato. La validità dell'approccio IWT è stata avvalorata da un attento confronto con soluzioni, metodologie e modelli allo stato dell’arte e dai risultati ottenuti in molteplici attività di sperimentazione condotte in ambito universitario e aziendale e descritte nei seguenti lavori: N.Capuano, M.Gaeta, S.Miranda, F.Orciuoli and P.Ritrovato “LIA: an Intelligent Advisor for e-Learning”, M. Lytras, J. Carroll, E. Damiani, R. Tennyson (Eds.), Emerging Technologies and Information Systems for the Knowledge Society - Proceedings of the World Summit on the Knowledge Society (WSKS 2008), September 24-26, 2008, Athens, Greece, Lecture Notes in Computer Science Series, vol. 5288, pp. 187-196, Springer-Verlag, 2008 – 2nd Best Paper Award N.Capuano, S.Miranda and F.Orciuoli “IWT: A Semantic Web-based Educational System”, G. Adorni, M. Coccoli (Eds.) Proceedings of the IV Workshop of the AI*IA Working Group on Artificial Intelligence & e-Learning held in conjunction with the XI International Conference of the Italian Association for Artificial Intelligence (AI*IA 2009), December 12, 2009, Reggio Emilia, Italy, pp. 11-16, AI*IA, 2009 M.Gaeta, S.Miranda, F.Orciuoli, S.Paolozzi, A.Poce “An Approach To Personalized e-Learning”, submitted to Informatics Education Europe V Rome, Italy, November 3-5, 2010 Il risultato principale è legato ad un confronto tra le performance ottenute in termini di competenze acquisite dagli utenti erogando a gruppi di utenti disgiunti ma sui medesimi argomenti, sia corsi semplici che corsi personalizzati. Sulla sperimentazione condotta sono state fatte riflessioni interessanti che sembrano convincere che l’approccio della personalizzazione di IWT porti a risultati migliori rispetto all’approccio tipico dell’e-learning ovvero all’erogazione di percorsi sequenziali statici di contenuti. Attraverso la personalizzazione si riescono a coinvolgere in modo efficace anche utenti che, per esempio, abbiano già un bagaglio di competenze medio-alto e che, tipicamente, non risultano essere propensi a seguire percorsi di apprendimento in e-learning. Per contro, questo approccio pur se totalmente automatizzato, richiede un impegno in fase di start-up per definire correttamente i profili degli utenti, disegnare l’ontologia del dominio oggetto di formazione, intesa come una corretta rappresentazione semantica dei concetti e delle relazioni tra questi, definire i metadata delle risorse didattiche a disposizione, ovvero indicizzarle e descriverle in modo completo per poterle poi utilizzare nel modo più appropriato possibile. Le attività di ricerca sono state orientate allo studio sullo stato dell’arte, allo studio di modelli esistenti, alla ricerca di soluzioni, alla definizione di possibili metodologie capaci di produrre miglioramenti su questi aspetti chiave legati sia alla rappresentazione della conoscenza in termini di ontologie e di metadata, che alla rappresentazione dei profili utente in termini di competenze sul dominio oggetto di apprendimento e di preferenze relative alle modalità di utilizzo e fruizione di contenuti. Ovviamente l’approccio non è stato meramente applicativo, ma si è data attenzione alla ampia letteratura di settore per cercare di studiare problemi e soluzioni esistenti e definire qualcosa (anche dal punto di vista algoritmico) che sia in qualche modo valido e di interesse per la comunità scientifica. Alcuni spunti sono riportati nei seguenti lavori: N.Capuano, L.Dell'Angelo, S.Miranda, F.Orciuoli and F.Zurolo “Ontology extraction from existing educational content to improve personalized e-Learning experiences”, Proceedings of the III IEEE International Conference on Semantic Computing (ICSC 2009), September 14-16, 2009, Berkeley, CA, USA, pp. 577-582, IEEE Computer Society, 2009 G.Gianforme, S.Miranda, F.Orciuoli and S.Paolozzi “From Classic User Modeling to Scrutable User Modeling” on the 1st International Workshop on Ontology for e-Technologies 2009 (ICEIS 2009) F.Colace, S.Miranda, R.Piscopo, P.Ritrovato “Applicazione di aritmetica degli intervalli per la verifica dei contenuti in una piattaforma di e-learning”, Proceedings of VI Congresso della SIE-L, Società Italiana di e-Learning, Salerno, 16-18 settembre 2009 In sintesi, avendo individuato dei modelli con cui delineare ed aggiornare i profili utente e delle metodologie computazionalmente efficienti attraverso cui comprendere se, nell’ambito di una specifica tematica, ci siano o meno contenuti sufficienti a rispondere alle esigenze degli utenti, l’idea è quella di concentrare l’attenzione su due aspetti fondamentali che sono l’estrazione automatica di ontologie e la definizione automatica di metadata per i contenuti. La situazione maggiormente ricorrente è infatti quella in cui il materiale da impiegare per costruire i percorsi di apprendimento sia già disponibile, per cui, per poter sfruttare i benefici della personalizzazione, occorre costruire ontologie e metadata a posteriori (e generalmente a mano). Per automatizzare queste operazioni sono stati definiti dei metodi attraverso i quali è possibile estrarre ontologie direttamente dai contenuti (diverse tipologie e standard) e si sta lavorando a come definire contestualmente i metadata, ovvero fornire una descrizione formale dei contenuti in termini di parametri sia tecnologici che pedagogici e indicizzarli in termini semantici attraverso i concetti estratti e riportati nelle ontologie. In letteratura sono presenti molteplici approcci che riescono a caratterizzare in automatico gli aspetti tecnologici relativi al contenuto (formato, dimensioni, requisiti HW e SW per poterli visualizzare), rari ed incompleti sono invece i tentativi di descrizione degli aspetti pedagogici impiegati da standard riconosciuti come IMS Learning Object Metadata (tipologia di risorsa didattica, densità semantica, difficoltà, tempo per la comprensione, livello di interazione, etc.). Mettendo insieme elementi di teoria dell’informazione, con modelli di learning si è cercato di proporre un approccio alla risoluzione di questo problema. Approccio che, al momento, sembra funzionare in una sperimentazione su un archivio di circa 2000 learning object per l’insegnamento della matematica e dell’informatica e che, a breve, verrà esteso al di fuori dell’ambito e-learning e nell'ottica moderna della pubblicazione delle informazioni sul web secondo la logica dei Linked Data. Logica a cui stanno dando attenzione enti come IEEE, BBC, Governo USA, etc., che, ovviamente, hanno grandi esigenze di catalogazione automatica di documenti. [a cura dell'autore]IX n.s

Human Practice. Digital Ecologies. Our Future. : 14. Internationale Tagung Wirtschaftsinformatik (WI 2019) : Tagungsband

Erschienen bei: universi - Universitätsverlag Siegen. - ISBN: 978-3-96182-063-4Aus dem Inhalt: Track 1: Produktion & Cyber-Physische Systeme Requirements and a Meta Model for Exchanging Additive Manufacturing Capacities Service Systems, Smart Service Systems and Cyber- Physical Systems—What’s the difference? Towards a Unified Terminology Developing an Industrial IoT Platform – Trade-off between Horizontal and Vertical Approaches Machine Learning und Complex Event Processing: Effiziente Echtzeitauswertung am Beispiel Smart Factory Sensor retrofit for a coffee machine as condition monitoring and predictive maintenance use case Stakeholder-Analyse zum Einsatz IIoT-basierter Frischeinformationen in der Lebensmittelindustrie Towards a Framework for Predictive Maintenance Strategies in Mechanical Engineering - A Method-Oriented Literature Analysis Development of a matching platform for the requirement-oriented selection of cyber physical systems for SMEs Track 2: Logistic Analytics An Empirical Study of Customers’ Behavioral Intention to Use Ridepooling Services – An Extension of the Technology Acceptance Model Modeling Delay Propagation and Transmission in Railway Networks What is the impact of company specific adjustments on the acceptance and diffusion of logistic standards? Robust Route Planning in Intermodal Urban Traffic Track 3: Unternehmensmodellierung & Informationssystemgestaltung (Enterprise Modelling & Information Systems Design) Work System Modeling Method with Different Levels of Specificity and Rigor for Different Stakeholder Purposes Resolving Inconsistencies in Declarative Process Models based on Culpability Measurement Strategic Analysis in the Realm of Enterprise Modeling – On the Example of Blockchain-Based Initiatives for the Electricity Sector Zwischenbetriebliche Integration in der Möbelbranche: Konfigurationen und Einflussfaktoren Novices’ Quality Perceptions and the Acceptance of Process Modeling Grammars Entwicklung einer Definition für Social Business Objects (SBO) zur Modellierung von Unternehmensinformationen Designing a Reference Model for Digital Product Configurators Terminology for Evolving Design Artifacts Business Role-Object Specification: A Language for Behavior-aware Structural Modeling of Business Objects Generating Smart Glasses-based Information Systems with BPMN4SGA: A BPMN Extension for Smart Glasses Applications Using Blockchain in Peer-to-Peer Carsharing to Build Trust in the Sharing Economy Testing in Big Data: An Architecture Pattern for a Development Environment for Innovative, Integrated and Robust Applications Track 4: Lern- und Wissensmanagement (e-Learning and Knowledge Management) eGovernment Competences revisited – A Literature Review on necessary Competences in a Digitalized Public Sector Say Hello to Your New Automated Tutor – A Structured Literature Review on Pedagogical Conversational Agents Teaching the Digital Transformation of Business Processes: Design of a Simulation Game for Information Systems Education Conceptualizing Immersion for Individual Learning in Virtual Reality Designing a Flipped Classroom Course – a Process Model The Influence of Risk-Taking on Knowledge Exchange and Combination Gamified Feedback durch Avatare im Mobile Learning Alexa, Can You Help Me Solve That Problem? - Understanding the Value of Smart Personal Assistants as Tutors for Complex Problem Tasks Track 5: Data Science & Business Analytics Matching with Bundle Preferences: Tradeoff between Fairness and Truthfulness Applied image recognition: guidelines for using deep learning models in practice Yield Prognosis for the Agrarian Management of Vineyards using Deep Learning for Object Counting Reading Between the Lines of Qualitative Data – How to Detect Hidden Structure Based on Codes Online Auctions with Dual-Threshold Algorithms: An Experimental Study and Practical Evaluation Design Features of Non-Financial Reward Programs for Online Reviews: Evaluation based on Google Maps Data Topic Embeddings – A New Approach to Classify Very Short Documents Based on Predefined Topics Leveraging Unstructured Image Data for Product Quality Improvement Decision Support for Real Estate Investors: Improving Real Estate Valuation with 3D City Models and Points of Interest Knowledge Discovery from CVs: A Topic Modeling Procedure Online Product Descriptions – Boost for your Sales? Entscheidungsunterstützung durch historienbasierte Dienstreihenfolgeplanung mit Pattern A Semi-Automated Approach for Generating Online Review Templates Machine Learning goes Measure Management: Leveraging Anomaly Detection and Parts Search to Improve Product-Cost Optimization Bedeutung von Predictive Analytics für den theoretischen Erkenntnisgewinn in der IS-Forschung Track 6: Digitale Transformation und Dienstleistungen Heuristic Theorizing in Software Development: Deriving Design Principles for Smart Glasses-based Systems Mirroring E-service for Brick and Mortar Retail: An Assessment and Survey Taxonomy of Digital Platforms: A Platform Architecture Perspective Value of Star Players in the Digital Age Local Shopping Platforms – Harnessing Locational Advantages for the Digital Transformation of Local Retail Outlets: A Content Analysis A Socio-Technical Approach to Manage Analytics-as-a-Service – Results of an Action Design Research Project Characterizing Approaches to Digital Transformation: Development of a Taxonomy of Digital Units Expectations vs. Reality – Benefits of Smart Services in the Field of Tension between Industry and Science Innovation Networks and Digital Innovation: How Organizations Use Innovation Networks in a Digitized Environment Characterising Social Reading Platforms— A Taxonomy-Based Approach to Structure the Field Less Complex than Expected – What Really Drives IT Consulting Value Modularity Canvas – A Framework for Visualizing Potentials of Service Modularity Towards a Conceptualization of Capabilities for Innovating Business Models in the Industrial Internet of Things A Taxonomy of Barriers to Digital Transformation Ambidexterity in Service Innovation Research: A Systematic Literature Review Design and success factors of an online solution for cross-pillar pension information Track 7: IT-Management und -Strategie A Frugal Support Structure for New Software Implementations in SMEs How to Structure a Company-wide Adoption of Big Data Analytics The Changing Roles of Innovation Actors and Organizational Antecedents in the Digital Age Bewertung des Kundennutzens von Chatbots für den Einsatz im Servicedesk Understanding the Benefits of Agile Software Development in Regulated Environments Are Employees Following the Rules? On the Effectiveness of IT Consumerization Policies Agile and Attached: The Impact of Agile Practices on Agile Team Members’ Affective Organisational Commitment The Complexity Trap – Limits of IT Flexibility for Supporting Organizational Agility in Decentralized Organizations Platform Openness: A Systematic Literature Review and Avenues for Future Research Competence, Fashion and the Case of Blockchain The Digital Platform Otto.de: A Case Study of Growth, Complexity, and Generativity Track 8: eHealth & alternde Gesellschaft Security and Privacy of Personal Health Records in Cloud Computing Environments – An Experimental Exploration of the Impact of Storage Solutions and Data Breaches Patientenintegration durch Pfadsysteme Digitalisierung in der Stressprävention – eine qualitative Interviewstudie zu Nutzenpotenzialen User Dynamics in Mental Health Forums – A Sentiment Analysis Perspective Intent and the Use of Wearables in the Workplace – A Model Development Understanding Patient Pathways in the Context of Integrated Health Care Services - Implications from a Scoping Review Understanding the Habitual Use of Wearable Activity Trackers On the Fit in Fitness Apps: Studying the Interaction of Motivational Affordances and Users’ Goal Orientations in Affecting the Benefits Gained Gamification in Health Behavior Change Support Systems - A Synthesis of Unintended Side Effects Investigating the Influence of Information Incongruity on Trust-Relations within Trilateral Healthcare Settings Track 9: Krisen- und Kontinuitätsmanagement Potentiale von IKT beim Ausfall kritischer Infrastrukturen: Erwartungen, Informationsgewinnung und Mediennutzung der Zivilbevölkerung in Deutschland Fake News Perception in Germany: A Representative Study of People’s Attitudes and Approaches to Counteract Disinformation Analyzing the Potential of Graphical Building Information for Fire Emergency Responses: Findings from a Controlled Experiment Track 10: Human-Computer Interaction Towards a Taxonomy of Platforms for Conversational Agent Design Measuring Service Encounter Satisfaction with Customer Service Chatbots using Sentiment Analysis Self-Tracking and Gamification: Analyzing the Interplay of Motivations, Usage and Motivation Fulfillment Erfolgsfaktoren von Augmented-Reality-Applikationen: Analyse von Nutzerrezensionen mit dem Review-Mining-Verfahren Designing Dynamic Decision Support for Electronic Requirements Negotiations Who is Stressed by Using ICTs? A Qualitative Comparison Analysis with the Big Five Personality Traits to Understand Technostress Walking the Middle Path: How Medium Trade-Off Exposure Leads to Higher Consumer Satisfaction in Recommender Agents Theory-Based Affordances of Utilitarian, Hedonic and Dual-Purposed Technologies: A Literature Review Eliciting Customer Preferences for Shopping Companion Apps: A Service Quality Approach The Role of Early User Participation in Discovering Software – A Case Study from the Context of Smart Glasses The Fluidity of the Self-Concept as a Framework to Explain the Motivation to Play Video Games Heart over Heels? An Empirical Analysis of the Relationship between Emotions and Review Helpfulness for Experience and Credence Goods Track 11: Information Security and Information Privacy Unfolding Concerns about Augmented Reality Technologies: A Qualitative Analysis of User Perceptions To (Psychologically) Own Data is to Protect Data: How Psychological Ownership Determines Protective Behavior in a Work and Private Context Understanding Data Protection Regulations from a Data Management Perspective: A Capability-Based Approach to EU-GDPR On the Difficulties of Incentivizing Online Privacy through Transparency: A Qualitative Survey of the German Health Insurance Market What is Your Selfie Worth? A Field Study on Individuals’ Valuation of Personal Data Justification of Mass Surveillance: A Quantitative Study An Exploratory Study of Risk Perception for Data Disclosure to a Network of Firms Track 12: Umweltinformatik und nachhaltiges Wirtschaften Kommunikationsfäden im Nadelöhr – Fachliche Prozessmodellierung der Nachhaltigkeitskommunikation am Kapitalmarkt Potentiale und Herausforderungen der Materialflusskostenrechnung Computing Incentives for User-Based Relocation in Carsharing Sustainability’s Coming Home: Preliminary Design Principles for the Sustainable Smart District Substitution of hazardous chemical substances using Deep Learning and t-SNE A Hierarchy of DSMLs in Support of Product Life-Cycle Assessment A Survey of Smart Energy Services for Private Households Door-to-Door Mobility Integrators as Keystone Organizations of Smart Ecosystems: Resources and Value Co-Creation – A Literature Review Ein Entscheidungsunterstützungssystem zur ökonomischen Bewertung von Mieterstrom auf Basis der Clusteranalyse Discovering Blockchain for Sustainable Product-Service Systems to enhance the Circular Economy Digitale Rückverfolgbarkeit von Lebensmitteln: Eine verbraucherinformatische Studie Umweltbewusstsein durch audiovisuelles Content Marketing? Eine experimentelle Untersuchung zur Konsumentenbewertung nachhaltiger Smartphones Towards Predictive Energy Management in Information Systems: A Research Proposal A Web Browser-Based Application for Processing and Analyzing Material Flow Models using the MFCA Methodology Track 13: Digital Work - Social, mobile, smart On Conversational Agents in Information Systems Research: Analyzing the Past to Guide Future Work The Potential of Augmented Reality for Improving Occupational First Aid Prevent a Vicious Circle! The Role of Organizational IT-Capability in Attracting IT-affine Applicants Good, Bad, or Both? Conceptualization and Measurement of Ambivalent User Attitudes Towards AI A Case Study on Cross-Hierarchical Communication in Digital Work Environments ‘Show Me Your People Skills’ - Employing CEO Branding for Corporate Reputation Management in Social Media A Multiorganisational Study of the Drivers and Barriers of Enterprise Collaboration Systems-Enabled Change The More the Merrier? The Effect of Size of Core Team Subgroups on Success of Open Source Projects The Impact of Anthropomorphic and Functional Chatbot Design Features in Enterprise Collaboration Systems on User Acceptance Digital Feedback for Digital Work? Affordances and Constraints of a Feedback App at InsurCorp The Effect of Marker-less Augmented Reality on Task and Learning Performance Antecedents for Cyberloafing – A Literature Review Internal Crowd Work as a Source of Empowerment - An Empirical Analysis of the Perception of Employees in a Crowdtesting Project Track 14: Geschäftsmodelle und digitales Unternehmertum Dividing the ICO Jungle: Extracting and Evaluating Design Archetypes Capturing Value from Data: Exploring Factors Influencing Revenue Model Design for Data-Driven Services Understanding the Role of Data for Innovating Business Models: A System Dynamics Perspective Business Model Innovation and Stakeholder: Exploring Mechanisms and Outcomes of Value Creation and Destruction Business Models for Internet of Things Platforms: Empirical Development of a Taxonomy and Archetypes Revitalizing established Industrial Companies: State of the Art and Success Principles of Digital Corporate Incubators When 1+1 is Greater than 2: Concurrence of Additional Digital and Established Business Models within Companies Special Track 1: Student Track Investigating Personalized Price Discrimination of Textile-, Electronics- and General Stores in German Online Retail From Facets to a Universal Definition – An Analysis of IoT Usage in Retail Is the Technostress Creators Inventory Still an Up-To-Date Measurement Instrument? Results of a Large-Scale Interview Study Application of Media Synchronicity Theory to Creative Tasks in Virtual Teams Using the Example of Design Thinking TrustyTweet: An Indicator-based Browser-Plugin to Assist Users in Dealing with Fake News on Twitter Application of Process Mining Techniques to Support Maintenance-Related Objectives How Voice Can Change Customer Satisfaction: A Comparative Analysis between E-Commerce and Voice Commerce Business Process Compliance and Blockchain: How Does the Ethereum Blockchain Address Challenges of Business Process Compliance? Improving Business Model Configuration through a Question-based Approach The Influence of Situational Factors and Gamification on Intrinsic Motivation and Learning Evaluation von ITSM-Tools für Integration und Management von Cloud-Diensten am Beispiel von ServiceNow How Software Promotes the Integration of Sustainability in Business Process Management Criteria Catalog for Industrial IoT Platforms from the Perspective of the Machine Tool Industry Special Track 3: Demos & Prototyping Privacy-friendly User Location Tracking with Smart Devices: The BeaT Prototype Application-oriented robotics in nursing homes Augmented Reality for Set-up Processe Mixed Reality for supporting Remote-Meetings Gamification zur Motivationssteigerung von Werkern bei der Betriebsdatenerfassung Automatically Extracting and Analyzing Customer Needs from Twitter: A “Needmining” Prototype GaNEsHA: Opportunities for Sustainable Transportation in Smart Cities TUCANA: A platform for using local processing power of edge devices for building data-driven services Demonstrator zur Beschreibung und Visualisierung einer kritischen Infrastruktur Entwicklung einer alltagsnahen persuasiven App zur Bewegungsmotivation für ältere Nutzerinnen und Nutzer A browser-based modeling tool for studying the learning of conceptual modeling based on a multi-modal data collection approach Exergames & Dementia: An interactive System for People with Dementia and their Care-Network Workshops Workshop Ethics and Morality in Business Informatics (Workshop Ethik und Moral in der Wirtschaftsinformatik – EMoWI’19) Model-Based Compliance in Information Systems - Foundations, Case Description and Data Set of the MobIS-Challenge for Students and Doctoral Candidates Report of the Workshop on Concepts and Methods of Identifying Digital Potentials in Information Management Control of Systemic Risks in Global Networks - A Grand Challenge to Information Systems Research Die Mitarbeiter von morgen - Kompetenzen künftiger Mitarbeiter im Bereich Business Analytics Digitaler Konsum: Herausforderungen und Chancen der Verbraucherinformati

Retrieval-, Distributed-, and Interleaved Practice in the Classroom:A Systematic Review

Three of the most effective learning strategies identified are retrieval practice, distributed practice, and interleaved practice, also referred to as desirable difficulties. However, it is yet unknown to what extent these three practices foster learning in primary and secondary education classrooms (as opposed to the laboratory and/or tertiary education classrooms, where most research is conducted) and whether these strategies affect different students differently. To address these gaps, we conducted a systematic review. Initial and detailed screening of 869 documents found in a threefold search resulted in a pool of 29 journal articles published from 2006 through June 2020. Seventy-five effect sizes nested in 47 experiments nested in 29 documents were included in the review. Retrieval- and interleaved practice appeared to benefit students’ learning outcomes quite consistently; distributed practice less so. Furthermore, only cognitive Student*Task characteristics (i.e., features of the student’s cognition regarding the task, such as initial success) appeared to be significant moderators. We conclude that future research further conceptualising and operationalising initial effort is required, as is a differentiated approach to implementing desirable difficulties

E-Governance: Strategy for Mitigating Non-Inclusion of Citizens in Policy Making in Nigeria

The Nigerian federation that currently has 36 states structure adopted the Weberian Public Administrative system before now as an ideal way of running government, which was characterized with the traditional way of doing things without recourse to the deployment of Information Communication Technology (ICT). Today e-governance is seen as a paradigm shift from the previous way of governance. Research has shown that, the adoption and implementation of e-governance is more likely to bring about effective service delivery, mitigate corruption and ultimately enhance citizens’ participation in governmental affairs. However, it has been argued that infrastructure such as regular electricity power and access to the Internet, in addition to a society with high rate of literacy level are required to effectively implement and realize the potentials of e-governance for improved delivery of services. Due to the difficulties currently experienced, developing nations need to adequately prepare for the implementation of e-governance on the platform of Information Communication Technology (ICT). Hence, this study seeks to examine whether the adoption and implementation of e-governance in the context of Nigeria would mitigate the hitherto non-inclusion of citizens in the formulation and implementation of government policies aimed at enhanced development. To achieve the objective of the study, data were sourced and analyzed majorly by examining government websites of 20 states in the Nigerian federation to ascertain if there are venues for citizens to interact with government in the area of policy making and feedback on government actions, as a way of promoting participatory governance. The study revealed that the adoption and implementation of e-governance in the country is yet to fully take place. This is due to lack of infrastructure, low level of literacy rate and government inability to provide the necessary infrastructure for e-governance to materialize. The paper therefore, recommends among others the need for the Federal Government to involve a sound and clear policy on how to go about the adoption and implementation of egovernance through deliberate effort at increasing budgetary allocation towards infrastructural development and mass education of citizens

The Impact of e-Democracy in Political Stability of Nigeria

The history of the Nigerian electoral process has been hitherto characterized by violence stemming from disputes in election outcomes. For instance, violence erupted across some states in Northern Nigeria when results indicated that a candidate who was popular in that part of the country was losing the election leading to avoidable loss of lives. Beside, this dispute in election outcome lingers for a long time in litigation at the electoral tribunals which distracts effective governance. However, the increasing penetrating use of ICTs in Nigeria is evident in the electoral processes with consequent shift in the behavior of actors in the democratic processes, thus changing the ways Nigerians react to election outcomes. This paper examines the trend in the use ICT in the Nigerian political system and its impact on the stability of the polity. It assesses the role of ICT in recent electoral processes and compares its impact on the outcome of the process in lieu of previous experiences in the Nigeria. Furthermore, the paper also examines the challenges and risks of implementing e-Democracy in Nigeria and its relationship to the economy in the light of the socio-economic situation of the country. The paper adopted qualitative approach in data gathering and analysis. From the findings, the paper observed that e-democracy is largely dependent on the level of ICT adoption, which is still at its lowest ebb in the country. It recognizes the challenges in the provision of ICT infrastructure and argues that appropriate low-cost infrastructure applicable to the Nigerian condition can be made available to implement e-democracy and thus arouse the interest of the populace in governance, increase the number of voters, and enhance transparency, probity and accountability, and participation in governance as well as help stabilize the nascent democrac