TY - CHAP A1 - Knoth, Alexander Henning A1 - Kiy, Alexander T1 - (Self-)confident through the introductory study phase with the Reflect App BT - (Self-)confident through the introductory study phase with the Reflect App T2 - CEUR Workshop Proceedings T2 - Selbst-bewusst durch die Studieneingangsphase mit der Reflect-App Y1 - 2014 UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-84921875162&partnerID=MN8TOARS SN - 1613-0073 IS - 1227 SP - 172 EP - 179 PB - CEUR-WS CY - Freiburg ER - TY - JOUR A1 - Lucke, Ulrike A1 - Rensing, Christoph T1 - A survey on pervasive education JF - Pervasive and mobile computing N2 - Researchers and developers worldwide have put their efforts into the design, development and use of information and communication technology to support teaching and learning. This research is driven by pedagogical as well as technological disciplines. The most challenging ideas are currently found in the application of mobile, ubiquitous, pervasive, contextualized and seamless technologies for education, which we shall refer to as pervasive education. This article provides a comprehensive overview of the existing work in this field and categorizes it with respect to educational settings. Using this approach, best practice solutions for certain educational settings and open questions for pervasive education are highlighted in order to inspire interested developers and educators. The work is assigned to different fields, identified by the main pervasive technologies used and the educational settings. Based on these assignments we identify areas within pervasive education that are currently disregarded or deemed challenging so that further research and development in these fields are stimulated in a trans-disciplinary approach. (C) 2013 Elsevier B.V. All rights reserved. KW - Pervasive learning KW - Ubiquitous learning KW - Mobile learning KW - Contextualized learning KW - Seamless learning KW - E-learning KW - E-teaching KW - Context awareness KW - Adaptivity KW - Personalization KW - Augmentation Y1 - 2014 U6 - https://doi.org/10.1016/j.pmcj.2013.12.001 SN - 1574-1192 SN - 1873-1589 VL - 14 SP - 3 EP - 16 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Respondek, Tobias T1 - A workflow for computing potential areas for wind turbines JF - Process design for natural scientists: an agile model-driven approach N2 - This paper describes the implementation of a workflow model for service-oriented computing of potential areas for wind turbines in jABC. By implementing a re-executable model the manual effort of a multi-criteria site analysis can be reduced. The aim is to determine the shift of typical geoprocessing tools of geographic information systems (GIS) from the desktop to the web. The analysis is based on a vector data set and mainly uses web services of the “Center for Spatial Information Science and Systems” (CSISS). This paper discusses effort, benefits and problems associated with the use of the web services. Y1 - 2014 SN - 978-3-662-45005-5 IS - 500 SP - 200 EP - 215 PB - Springer CY - Berlin ER - TY - CHAP A1 - Kiy, Alexander A1 - Lucke, Ulrike A1 - Zoerner, Dietmar T1 - An adaptive personal learning environment architecture T2 - Architecture of Computing Systems – ARCS 2014 Lecture Notes in Computer Science N2 - Institutions are facing the challenge to integrate legacy systems with steadily growing new ones, using different technologies and interaction patterns. With the demand of offering the best potential of all systems, several not matching systems including their functions have to be aggregated and offered in a useable way. This paper presents an adaptive, generalizable and self-organized Personal Learning Environment (PLE) framework with the potential to integrate several heterogeneous services using a service-oriented architecture. First, a general overview over the field is given, followed by the description of the core components of the PLE framework. A prototypical implementation is presented. Finally, it’s shown how the PLE framework can be dynamically adapted to a changing system environment, reflecting experiences from first user studies. KW - Service-oriented architecture KW - Personal Learning Environment KW - University Service Bus Y1 - 2014 SN - 978-3-319-04890-1 VL - 2014 IS - 8350 SP - 60 EP - 71 PB - Springer ER - TY - JOUR A1 - Baier, Thomas A1 - Mendling, Jan A1 - Weske, Mathias T1 - Bridging abstraction layers in process mining JF - Information systems N2 - While the maturity of process mining algorithms increases and more process mining tools enter the market, process mining projects still face the problem of different levels of abstraction when comparing events with modeled business activities. Current approaches for event log abstraction try to abstract from the events in an automated way that does not capture the required domain knowledge to fit business activities. This can lead to misinterpretation of discovered process models. We developed an approach that aims to abstract an event log to the same abstraction level that is needed by the business. We use domain knowledge extracted from existing process documentation to semi-automatically match events and activities. Our abstraction approach is able to deal with n:m relations between events and activities and also supports concurrency. We evaluated our approach in two case studies with a German IT outsourcing company. (C) 2014 Elsevier Ltd. All rights reserved. KW - Process mining KW - Abstraction KW - Event mapping Y1 - 2014 U6 - https://doi.org/10.1016/j.is.2014.04.004 SN - 0306-4379 SN - 1873-6076 VL - 46 SP - 123 EP - 139 PB - Elsevier CY - Oxford ER - TY - JOUR A1 - Giese, Holger A1 - Hildebrandt, Stephan A1 - Lambers, Leen T1 - Bridging the gap between formal semantics and implementation of triple graph grammars JF - Software and systems modeling N2 - The correctness of model transformations is a crucial element for model-driven engineering of high-quality software. A prerequisite to verify model transformations at the level of the model transformation specification is that an unambiguous formal semantics exists and that the implementation of the model transformation language adheres to this semantics. However, for existing relational model transformation approaches, it is usually not really clear under which constraints particular implementations really conform to the formal semantics. In this paper, we will bridge this gap for the formal semantics of triple graph grammars (TGG) and an existing efficient implementation. While the formal semantics assumes backtracking and ignores non-determinism, practical implementations do not support backtracking, require rule sets that ensure determinism, and include further optimizations. Therefore, we capture how the considered TGG implementation realizes the transformation by means of operational rules, define required criteria, and show conformance to the formal semantics if these criteria are fulfilled. We further outline how static and runtime checks can be employed to guarantee these criteria. Y1 - 2014 U6 - https://doi.org/10.1007/s10270-012-0247-y SN - 1619-1366 SN - 1619-1374 VL - 13 IS - 1 SP - 273 EP - 299 PB - Springer CY - Heidelberg ER - TY - JOUR A1 - Hoos, Holger A1 - Lindauer, Marius A1 - Schaub, Torsten H. T1 - claspfolio 2 BT - advances in algorithm selection for answer set programming JF - Theory and practice of logic programming N2 - Building on the award-winning, portfolio-based ASP solver claspfolio, we present claspfolio 2, a modular and open solver architecture that integrates several different portfolio-based algorithm selection approaches and techniques. The claspfolio 2 solver framework supports various feature generators, solver selection approaches, solver portfolios, as well as solver-schedule-based pre-solving techniques. The default configuration of claspfolio 2 relies on a light-weight version of the ASP solver clasp to generate static and dynamic instance features. The flexible open design of claspfolio 2 is a distinguishing factor even beyond ASP. As such, it provides a unique framework for comparing and combining existing portfolio-based algorithm selection approaches and techniques in a single, unified framework. Taking advantage of this, we conducted an extensive experimental study to assess the impact of different feature sets, selection approaches and base solver portfolios. In addition to gaining substantial insights into the utility of the various approaches and techniques, we identified a default configuration of claspfolio 2 that achieves substantial performance gains not only over clasp's default configuration and the earlier version of claspfolio, but also over manually tuned configurations of clasp. Y1 - 2014 U6 - https://doi.org/10.1017/S1471068414000210 SN - 1471-0684 SN - 1475-3081 VL - 14 SP - 569 EP - 585 PB - Cambridge Univ. Press CY - New York ER - TY - THES A1 - Schnjakin, Maxim T1 - Cloud-RAID BT - eine Methode zur Bereitstellung zuverlässiger Speicherressourcen in öffentlichen Clouds Y1 - 2014 ER - TY - JOUR A1 - Lis, Monika ED - Lambrecht, Anna-Lena ED - Margaria, Tiziana T1 - Constructing a Phylogenetic Tree JF - Process Design for Natural Scientists: an agile model-driven approach N2 - In this project I constructed a workflow that takes a DNA sequence as input and provides a phylogenetic tree, consisting of the input sequence and other sequences which were found during a database search. In this phylogenetic tree the sequences are arranged depending on similarities. In bioinformatics, constructing phylogenetic trees is often used to explore the evolutionary relationships of genes or organisms and to understand the mechanisms of evolution itself. Y1 - 2014 SN - 978-3-662-45005-5 SN - 1865-0929 IS - 500 SP - 101 EP - 109 PB - Springer Verlag CY - Berlin ER - TY - JOUR A1 - Noack, Franziska T1 - CREADED: Colored-Relief application for digital elevation data JF - Process design for natural scientists: an agile model-driven approach N2 - In the geoinformatics field, remote sensing data is often used for analyzing the characteristics of the current investigation area. This includes DEMs, which are simple raster grids containing grey scales representing the respective elevation values. The project CREADED that is presented in this paper aims at making these monochrome raster images more significant and more intuitively interpretable. For this purpose, an executable interactive model for creating a colored and relief-shaded Digital Elevation Model (DEM) has been designed using the jABC framework. The process is based on standard jABC-SIBs and SIBs that provide specific GIS functions, which are available as Web services, command line tools and scripts. Y1 - 2014 SN - 978-3-662-45005-5 SN - 1865-0929 IS - 500 SP - 186 EP - 199 PB - Springer CY - Berlin ER - TY - JOUR A1 - Blaese, Leif T1 - Data mining for unidentified protein squences JF - Process design for natural scientists: an agile model-driven approach N2 - Through the use of next generation sequencing (NGS) technology, a lot of newly sequenced organisms are now available. Annotating those genes is one of the most challenging tasks in sequence biology. Here, we present an automated workflow to find homologue proteins, annotate sequences according to function and create a three-dimensional model. Y1 - 2014 SN - 978-3-662-45005-5 SN - 1865-0929 IS - 500 SP - 73 EP - 87 PB - Springer CY - Berlin ER - TY - CHAP A1 - Kiy, Alexander A1 - Grünwald, Franka A1 - Zoerner, Dietmar A1 - Lucke, Ulrike ED - Trasch, Stephan ED - Plötzner, Rolf ED - Schneider, Gerhard ED - Sassiat, Daniel ED - Gayer, Claudia ED - Wöhrle, Nicole T1 - Ein Hochschul-App-Framework: Hybrid und modular T2 - DeLFI 2014 - Die 12. e-Learning Fachtagung Informatik Lecture Notes in Informatics N2 - Mobile Endgeräte und die dazugehörigen Applikationen sind zu einem unverzichtbaren Bestandteil des täglichen Lebens geworden und ermöglichen den ortsund zeitunabhängigen Zugriff auf wichtige Informationen. Hochschulspezifische An- gebote sind im mobilen Bereich hingegen noch immer nicht flächendeckend anzutreffen und lassen sich i. d. R. nur auf Einzelaktivitäten Studierender und Lehrender zurückführen. Dabei können mobile Applikationen einen essentiellen Beitrag zur Verbesserung der studentischen Selbstorganisation sowie für die Ausgestaltung und Ergänzung von konkreten Lehr-/Lernszenarien leisten. Dieser Artikel stellt ein modulares Hochschul-App-Framework vor, das sowohl zentrale campusbezogene Dienste als auch dezentrale Lernapplikationen unter einer Oberfläche vereint anbietet. Anhand einer Analyse von Stärken und Schwächen werden verschiedene Ansätze in Hinblick auf Anforderungen, Entwicklung, Wartung und Betrieb der Hochschul-App zusammengefasst und bewertet. Es wird auf die zugrundeliegende serviceorientierte Architektur eingegangen, die eine Portierung der Applikation auf andere Hochschulen mit einem vertretbaren Aufwand ermöglicht. Der Beitrag schließt mit einer Darstellung der ersten Ergebnisse und weiterführender Überlegungen und Arbeiten. Y1 - 2014 UR - https://subs.emis.de/LNI/Proceedings/Proceedings233/article18.html SN - 978-3-88579-627-5 IS - P-233 SP - 205 EP - 216 PB - Gesellschaft für Informatik e.V. CY - Bonn ER - TY - THES A1 - Krüger, Jens T1 - Enterprise-specific in-memory data managment : HYRISEc - an in-memory column store engine for OLXP Y1 - 2014 PB - Hasso-Plattner-Insitut CY - Potsdam ER - TY - THES A1 - Lincke, Jens T1 - Evolving Tools in a Collaborative Self-supporting Development Environment Y1 - 2014 ER - TY - JOUR A1 - Vierheller, Janine ED - Lambrecht, Anna-Lena ED - Margaria, Tiziana T1 - Exploratory Data Analysis JF - Process Design for Natural Scientists: an agile model-driven approach N2 - In bioinformatics the term exploratory data analysis refers to different methods to get an overview of large biological data sets. Hence, it helps to create a framework for further analysis and hypothesis testing. The workflow facilitates this first important step of the data analysis created by high-throughput technologies. The results are different plots showing the structure of the measurements. The goal of the workflow is the automatization of the exploratory data analysis, but also the flexibility should be guaranteed. The basic tool is the free software R. Y1 - 2014 SN - 978-3-662-45005-5 SN - 1865-0929 IS - 500 SP - 110 EP - 126 PB - Axel Springer Verlag CY - Berlin ER - TY - JOUR A1 - Zender, Raphael A1 - Metzler, Richard A1 - Lucke, Ulrike T1 - FreshUP-A pervasive educational game for freshmen JF - Pervasive and mobile computing N2 - Students beginning their studies at university face manifold problems such as orientation in a new environment and organizing their courses. This article presents the implementation and successful empirical evaluation of the pervasive browser-based educational game "FreshUP", which aims at helping to overcome the initial difficulties of freshmen. In contrast to a conventional scavenger hunt, mobile pervasive games like FreshUP, bridging in-game and real world activities, have the potential to provide help in a motivating manner using new technology which is currently becoming more and more common. (C) 2013 Elsevier B.V. All rights reserved. KW - Pervasive game KW - Campus KW - Freshmen KW - e-learning KW - Mobile devices KW - SOA KW - Evaluation Y1 - 2014 U6 - https://doi.org/10.1016/j.pmcj.2013.09.003 SN - 1574-1192 SN - 1873-1589 VL - 14 SP - 47 EP - 56 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Garoufi, Konstantina A1 - Koller, Alexander T1 - Generation of effective referring expressions in situated context JF - Language, cognition and neuroscience N2 - In task-oriented communication, references often need to be effective in their distinctive function, that is, help the hearer identify the referent correctly and as effortlessly as possible. However, it can be challenging for computational or empirical studies to capture referential effectiveness. Empirical findings indicate that human-produced references are not always optimally effective, and that their effectiveness may depend on different aspects of the situational context that can evolve dynamically over the course of an interaction. On this basis, we propose a computational model of effective reference generation which distinguishes speaker behaviour according to its helpfulness to the hearer in a certain situation, and explicitly aims at modelling highly helpful speaker behaviour rather than speaker behaviour invariably. Our model, which extends the planning-based paradigm of sentence generation with a statistical account of effectiveness, can adapt to the situational context by making this distinction newly for each new reference. We find that the generated references resemble those of effective human speakers more closely than references of baseline models, and that they are resolved correctly more often than those of other models participating in a shared-task evaluation with human hearers. Finally, we argue that the model could serve as a methodological framework for computational and empirical research on referential effectiveness. KW - natural language generation KW - reference KW - referential effectiveness Y1 - 2014 U6 - https://doi.org/10.1080/01690965.2013.847190 SN - 2327-3798 SN - 2327-3801 VL - 29 IS - 8 SP - 986 EP - 1001 PB - Routledge, Taylor & Francis Group CY - Abingdon ER - TY - JOUR A1 - Teske, Daniel T1 - Geocoder accuracy ranking JF - Process design for natural scientists: an agile model-driven approach N2 - Finding an address on a map is sometimes tricky: the chosen map application may be unfamiliar with the enclosed region. There are several geocoders on the market, they have different databases and algorithms to compute the query. Consequently, the geocoding results differ in their quality. Fortunately the geocoders provide a rich set of metadata. The workflow described in this paper compares this metadata with the aim to find out which geocoder is offering the best-fitting coordinate for a given address. Y1 - 2014 SN - 978-3-662-45005-5 SN - 1865-0929 IS - 500 SP - 161 EP - 174 PB - Springer CY - Berlin ER - TY - JOUR A1 - Holler, Robin T1 - GraffDok - a graffiti documentation application JF - Process design for natural scientists: an agile model-driven approach N2 - GraffDok is an application helping to maintain an overview over sprayed images somewhere in a city. At the time of writing it aims at vandalism rather than at beautiful photographic graffiti in an underpass. Looking at hundreds of tags and scribbles on monuments, house walls, etc. it would be interesting to not only record them in writing but even make them accessible electronically, including images. GraffDok’s workflow is simple and only requires an EXIF-GPS-tagged photograph of a graffito. It automatically determines its location by using reverse geocoding with the given GPS-coordinates and the Gisgraphy WebService. While asking the user for some more meta data, GraffDok analyses the image in parallel with this and tries to detect fore- and background – before extracting the drawing lines and make them stand alone. The command line based tool ImageMagick is used here as well as for accessing EXIF data. Any meta data is written to csv-files, which will stay easily accessible and can be integrated in TeX-files as well. The latter ones are converted to PDF at the end of the workflow, containing a table about all graffiti and a summary for each – including the generated characteristic graffiti pattern image. Y1 - 2014 SN - 978-3-662-45005-5 SN - 1865-0929 IS - 500 SP - 239 EP - 251 PB - Springer CY - Berlin ER - TY - JOUR A1 - Schütt, Christine T1 - Identification of differentially expressed genes JF - Process design for natural scientists: an agile model-driven approach N2 - With the jABC it is possible to realize workflows for numerous questions in different fields. The goal of this project was to create a workflow for the identification of differentially expressed genes. This is of special interest in biology, for it gives the opportunity to get a better insight in cellular changes due to exogenous stress, diseases and so on. With the knowledge that can be derived from the differentially expressed genes in diseased tissues, it becomes possible to find new targets for treatment. Y1 - 2014 SN - 978-3-662-45005-5 SN - 1865-0929 IS - 500 SP - 127 EP - 139 PB - Springer CY - Berlin ER -