Institut für Informatik und Computational Science
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Diese Arbeit enthält eine umfassende Analyse, wie der Kompetenzerwerb in einem einsemestrigen Softwarepraktikum vonstatten geht. Dabei steht neben der Frage, welche Kompetenzen besonders gut erworben wurden, der Einfluss von Vorwissen/-kompetenz im Mittelpunkt der Abhandlung. Auf dieser Basis werden einige grundlegende und konkrete Verbesserungsvorschläge erarbeitet, wie der breite Kompetenzerwerb begünstigt wird, d.h. möglichst viele Studierende sich in einem breiten Kompetenzspektrum weiterentwickeln.
Das Gebiet der Netzsicherheit ist ein schwer zu lehrendes und mühsam zu lernendes Fach in der Informatikausbildung. Dies hat verschiedene Gründe, z.B. erfordert es Fachkenntnis, die jenseits von bunten Bildern zu vermitteln ist und sich dabei mit geringer Halbwertszeit weiterentwickelt. Echte Bedrohungsszenarien müssen unter Laborbedingungen nachgestellt werden, und der Umgang mit den Sicherheitswerkzeugen ist sehr komplex. Auf der einen Seite muss das System konzeptionell verstanden werden und auf der anderen Seite sind viele Details in der Konfiguration von Firewalls, Netz-Komponenten und –Werkzeugen für klassische Prüfungssituationen in der Ausbildung anzuwenden. Mit NetS-X (Network Security Experience) stellen wir einen laufenden Prototyp einer e-learning Plattform vor, mit der ein weiter Bereich von Sicherheitsszenarien vermittelt werden kann. Dabei wird der Lernende in einem Spielsystem mit Situationen konfrontiert, die er in einer echten, auf Linux basierenden typischen IT-Infrastruktur eines Unternehmens beherrschen muss. Die sicherheitsrelevanten Aktivitäten des Lernenden, z.B. der Einsatz von Monitor-Werkzeugen oder die Konfiguration von Netz-Komponenten werden dabei nicht simuliert, sondern real durchgeführt und durch Prozesse des Spielsystems beobachtet und bewertet. Autorenwerkzeuge ermöglichen den Lehrenden und Spielern, selber neue Spielsituationen, Sicherheitsszenarien oder Wissenskomponenten in das System zu integrieren.
Die gelungene Durchführung einer Vorlesung „Informatik I – Einführung in die Programmierung“ ist schwierig, trotz einer Vielfalt existierender Materialien und erprobter didaktischer Methoden. Gerade aufgrund dieser vielfältigen Auswahl hat sich bisher noch kein robustes Konzept durchgesetzt, das unabhängig von den Durchführenden eine hohe Erfolgsquote garantiert. An den Universitäten Tübingen und Freiburg wurde die Informatik I aus den gleichen Lehrmaterialien und unter ähnlichen Bedingungen durchgeführt, um das verwendete Konzept auf Robustheit zu überprüfen. Die Grundlage der Vorlesung bildet ein systematischer Ansatz zum Erlernen des Programmierens, der von der PLTGruppe in USA entwickelt worden ist. Hinzu kommen neue Ansätze zur Betreuung, insbesondere das Betreute Programmieren, bei dem die Studierenden eine solide Basis für ihre Programmierfähigkeiten entwickeln. Der vorliegende Bericht beschreibt hierbei gesammelte Erfahrungen, erläutert die Entwicklung der Unterrichtsmethodik und der Inhaltsauswahl im Vergleich zu vorangegangenen Vorlesungen und präsentiert Daten zum Erfolg der Vorlesung.
Biographisches Lernen betont insbesondere die Rolle individueller biographischer Erfahrungen und deren Auswirkungen auf Selbstbild, Weltbild und Verhaltensmuster. Schlagwortartig kann diese Perspektive als Unterschied zwischen ‚Informatik lernen‘ und ‚Informatiker/in werden‘ beschrieben werden. Im Artikel wird die Perspektive des Biographischen Lernens an Beispielen aus der Informatik skizziert. Biographisches Lernen ist in der Informatik zunächst aus rein pragmatischen Gründen bedeutsam. Der rasche Wandel der Informationstechnologien im Alltag verändert Erfahrungshintergründe der Studierenden (bzw. Schülerinnen und Schüler). Dementsprechend verändern sich Erwartungen, Interessen, Vorkenntnisse, generelle Einstellungen oder auch ganz banal die ‚IT-Ausstattung‘ der Lernenden.
Game-based Learning
(2009)
Game-based Learning und Edutainment sind aktuelle Schlagworte im Bereich der Hochschulausbildung. Zunächst verbindet man damit die Integration einer Spiel- und Spaßkultur in die herkömmlichen Lehrveranstaltungen wie Vorlesungen, Übungen, Praktika und Seminare. Die nachfolgenden Ausführungen gehen einer genaueren Begriffsanalyse nach und untersuchen, ob Game-based Learning und Edutainment tatsächlich neuartige Unterrichtsformen erfordern oder neue didaktische Überlegungen in bestehendes Unterrichtsgeschehen bringen – oder ob es nicht doch an einigen Stellen „alter Wein in neuen Schläuchen“ ist.
Medi@Thing
(2009)
In vielen Bildungsbereichen verschieben sich gegenwärtig die Akzente von einer qualifikationsorientierten zu einer stärker kompetenzorientierten Ausbildung. Der Begriff der Kompetenz zielt dabei darauf ab, das Aneignen von Wissen auf Vorrat zugunsten des Erwerbs allgemeiner Kompetenzen beispielsweise zur eigenständigen Aneignung von Wissen zu verschieben. Schlüsselqualifikationen geraten dabei zunehmend auch für die Ausbildung von Ingenieuren und Informatikern ins Blickfeld. Der kooperative und erwägende Umgang mit Wissensvielfalt wird in einer Informationsgesellschaft mit ihrer schnellen und verteilten Aufbereitung von Wissen zur Herausforderung. Der Beitrag skizziert die damit verbundenen Anforderungen und stellt mit dem Konzept des Medi@Thing einen Ansatz vor, der die Umsetzung solcher Anforderungen im Rahmen der universitären Informatikausbildung ermöglicht. Ein zentrales Moment dieses Ansatzes ist die ko-aktive Wissensarbeit in virtuellen Räumen. Erste Erfahrungen zeigen, dass das Konzept von Studierenden angenommen wird. Es wird jedoch auch deutlich, dass für das Gelingen bestimmte organisatorische und technische Randbedingungen zu beachten sind.
This paper describes the proof calculus LD for clausal propositional logic, which is a linearized form of the well-known DPLL calculus extended by clause learning. It is motivated by the demand to model how current SAT solvers built on clause learning are working, while abstracting from decision heuristics and implementation details. The calculus is proved sound and terminating. Further, it is shown that both the original DPLL calculus and the conflict-directed backtracking calculus with clause learning, as it is implemented in many current SAT solvers, are complete and proof-confluent instances of the LD calculus.