TY - CHAP A1 - Hohmann, Georg A1 - Fiedler, Hans-Jürgen T1 - Ansprüche an Gebäude von morgen - Integration intelligenter Systeme N2 - Die technische Entwicklung, insbesondere auf dem Gebiet der Digitaltechnik eröffnet heute neue und sehr weitreichende Möglichkeiten für die Automatisierung in Zweck- und Wohnbauten. Die zur Verfügung stehenden technischen Komponenten (intelligente Sensoren und Aktoren sowie ein hausinternes Netz für die Datenübertragung -Feldbus-) unterscheiden sich für diese Einsatzfälle kaum. Die Zielstellungen sind jedoch gänzlich andere. Intelligenz im Wohnbau bedeutet vor allem intelligente Alltagsbewältigung (z.B. Zeiteinsparung), Komfort und Wohlbefinden. Daß im Heimbereich nichtfunktionale Faktoren (Human Interface, Ästhetik, Preis, Attraktivität) eine große Rolle spielen, ist in das Problembewußtsein der Gerätehersteller und Käufer getreten. Im Bereich der Heimautomatisierung werden zunehmend moderne, die Möglichkeiten der konventioellen Steuerungs- und Regelungstechnik ergänzende Technologien wie Fuzzy- Steuerungen zur Optimierung der internen Arbeitsweise von Geräten eingesetzt. Die informatorische Vernetzung im Wohnbau unterstützt darüberhinaus wichtige Anliegen des Gebäudemanagements (energetische, ergonomische und ökologische Betrachtungen der Gebäudenutzung unter wirtschaftlichen Gesichtspunkten). KW - Gebäude KW - Automatisierungssystem KW - IKM KW - Weimar KW - 1997 Y1 - 1997 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20111102-15 ER - TY - THES A1 - Coulon, Carl-Helmut T1 - Strukurorientiertes Fallbasiertes Schließen T1 - Structure oriented case based reasoning N2 - Das Ziel dieser Arbeit war es, durch Verwendung geeigneter vorhandener CAD-Pläne die Bearbeitung neuer CAD-Pläne zu unterstützen. Entstanden ist ein generischer Ansatz zum fallbasierten Schließens. Da in CAD-Plänen die räumliche Struktur eine wichtige Rolle spielt, ist das Konzept auf strukturorientierte Anwendungen ausgerichtet. Deshalb bezeichne ich es als ein Konzept zum " strukturorientierten fallbasierten Schließen". Die Arbeit spezifiziert das Minimum an Wissen, welches zur Suche und Wiederverwendung von Fällen benötigt wird, wie das darüber hinausgehende Wissen verarbeitet wird, welche Zusammenhänge es zum Beispiel zwischen Vergleichs- und Anpassungswissen gibt und wie man das Wissen modellieren kann. Zur Erläuterung wird das benötigte Wissen anhand verschiedener Anwendungen dargestellt. Das in der Arbeit vorgestellte Konzept erlaubt die Ergänzung, Detaillierung und Korrektur einer Anfrage. Die beiden entscheidenden Algorithmen dienen dem Vergleich von Anfrage und Fall und der Anpassung der Information des Falles zur Modifikation der Anfrage. N2 - The task of this thesis was the computer supported reuse of known CAD-designs in order to create new CAD-designs. The developed solution contains a generic approach to case based reasoning. Due to the relevance of spatial structures in CAD-designs the approach focusses on structure oriented applications. Therefore it is called an approach for „structure oriented case based reasoning". This thesis specifies the kind of the minimum knowledge required for retrieval and reuse of cases, how to integrate additional knowledge, relations between knowledge needed for comparision and adaption and how to model the knowledge. For illustration the required knowledge is described for different applications. The developed concept allows to extend, detail and correct a given query. The two most important algorithms are used to compare cases and query and to reuse the information found in a case to modify a query. KW - Fallbasiertes Schließen KW - Bauplanung KW - CAD KW - Problemlösen KW - Wissensmodellierung KW - Strukturvergleich KW - Anpassung KW - Knowledge modelling KW - comparison of structure KW - adaption Y1 - 1997 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20040212-265 ER - TY - THES A1 - Willenbacher, Susanne T1 - Untersuchungen zu räumlichen Benutzerschnittstellen am Beispiel der Präsentation von Stadtinformationen T1 - Examinations to spatial user-interfaces on the example of city-informationd N2 - Schwerpunkt der Arbeit ist die Auseinandersetzung mit den Möglichkeiten und Grenzen der Desktop-VR als neue Generation der Benutzerschnittstellen. Besondere Bedeutung bei dieser Art des Interface-Designs kommt den Metaphern zu. Ein großer Teil der Arbeit beschäftigt sich mit der Klassifikation, der Auswahl und dem Einsatz passender Metaphern unter Berücksichtigung der in der Applikation darzustellenden Informationsinhalte. Aus der Kombination dieser beiden Merkmale (Art der Metapher, Informationsinhalt) ergeben sich vier verschiedene virtuelle Umgebungen, deren Eigenschaften und Besonderheiten konkretisiert und an Beispielen aus dem Anwendungsgebiet der Stadtinformationssysteme vorgestellt werden. Als praktischer Untersuchungsgegenstand dient das Anwendungsgebiet der Stadtinformationssysteme. Die theoretisch basierten Erkenntnisse und Schlußfolgerungen werden durch statistische Untersuchungen, in Form von Fragebögen zu Stadtinformationssystemen, überprüft und konkretisiert. N2 - Topic of the paper is a discussion about the possibilities and boundaries of a new age in interface-design - the age of Desktop-VR interfaces. The important basis of this approach of interface-design is the use of a metaphor. One part of this paper deals with the classification of metaphors and gives a guideline which kind of metaphor fits to which kind of information / application. If you combine this two features (kind of metaphor, kind of information) you can get four different kinds of virtual environments. The features and characteristics of this four special virtual environments will be presented. Examples from the field of city-information-systems will be discussed. The field of city-information-system-application will used for a practical examine. Therefore a statistical evaluation of questionnaire about city-information-systems was realised. KW - Virtuelle Realität KW - Geoinformationssystem KW - Graphische Benutzeroberfläche KW - Benutzerorientierung KW - Metapher KW - Stadt KW - Benutzerschnittstellen KW - Stadtinformationssystem KW - Desktop-VR-Interface KW - VRML KW - City KW - Userinterface-Design KW - Metaphors KW - VRML KW - Desktop-VR-Interface Y1 - 2000 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20040218-363 ER - TY - RPRT A1 - Gross, Tom A1 - Oemig, Christoph T1 - COBRA: A Constraint-Based Awareness Management Framework N2 - The effective and efficient cooperation in communities and groups requires that the members of the community or group have adequate information about each other and the environment. In this paper, we outline the basic challenges of managing awareness information. We analyse the management of awareness information in face-to-face situations, and discuss challenges and requirements for the support of awareness management in distributed settings. Finally, after taking a look at related work, we present a simple, yet powerful framework for awareness management based on constraint pattern named COBRA. KW - Angewandte Informatik KW - Awareness KW - Gruppengewahrsein KW - Privatsphaere KW - Reziprozitaet KW - Awareness KW - information sharing KW - privacy KW - reciprocity Y1 - 2005 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20111215-7451 ER - TY - CHAP A1 - Bimber, Oliver T1 - HOLOGRAPHICS: Combining Holograms with Interactive Computer Graphics T2 - New Directions in Holography and Speckles N2 - Among all imaging techniques that have been invented throughout the last decades, computer graphics is one of the most successful tools today. Many areas in science, entertainment, education, and engineering would be unimaginable without the aid of 2D or 3D computer graphics. The reason for this success story might be its interactivity, which is an important property that is still not provided efficiently by competing technologies – such as holography. While optical holography and digital holography are limited to presenting a non-interactive content, electroholography or computer generated holograms (CGH) facilitate the computer-based generation and display of holograms at interactive rates [2,3,29,30]. Holographic fringes can be computed by either rendering multiple perspective images, then combining them into a stereogram [4], or simulating the optical interference and calculating the interference pattern [5]. Once computed, such a system dynamically visualizes the fringes with a holographic display. Since creating an electrohologram requires processing, transmitting, and storing a massive amount of data, today’s computer technology still sets the limits for electroholography. To overcome some of these performance issues, advanced reduction and compression methods have been developed that create truly interactive electroholograms. Unfortunately, most of these holograms are relatively small, low resolution, and cover only a small color spectrum. However, recent advances in consumer graphics hardware may reveal potential acceleration possibilities that can overcome these limitations [6]. In parallel to the development of computer graphics and despite their non-interactivity, optical and digital holography have created new fields, including interferometry, copy protection, data storage, holographic optical elements, and display holograms. Especially display holography has conquered several application domains. Museum exhibits often use optical holograms because they can present 3D objects with almost no loss in visual quality. In contrast to most stereoscopic or autostereoscopic graphics displays, holographic images can provide all depth cues—perspective, binocular disparity, motion parallax, convergence, and accommodation—and theoretically can be viewed simultaneously from an unlimited number of positions. Displaying artifacts virtually removes the need to build physical replicas of the original objects. In addition, optical holograms can be used to make engineering, medical, dental, archaeological, and other recordings—for teaching, training, experimentation and documentation. Archaeologists, for example, use optical holograms to archive and investigate ancient artifacts [7,8]. Scientists can use hologram copies to perform their research without having access to the original artifacts or settling for inaccurate replicas. Optical holograms can store a massive amount of information on a thin holographic emulsion. This technology can record and reconstruct a 3D scene with almost no loss in quality. Natural color holographic silver halide emulsion with grain sizes of 8nm is today’s state-of-the-art [14]. Today, computer graphics and raster displays offer a megapixel resolution and the interactive rendering of megabytes of data. Optical holograms, however, provide a terapixel resolution and are able to present an information content in the range of terabytes in real-time. Both are dimensions that will not be reached by computer graphics and conventional displays within the next years – even if Moore’s law proves to hold in future. Obviously, one has to make a decision between interactivity and quality when choosing a display technology for a particular application. While some applications require high visual realism and real-time presentation (that cannot be provided by computer graphics), others depend on user interaction (which is not possible with optical and digital holograms). Consequently, holography and computer graphics are being used as tools to solve individual research, engineering, and presentation problems within several domains. Up until today, however, these tools have been applied separately. The intention of the project which is summarized in this chapter is to combine both technologies to create a powerful tool for science, industry and education. This has been referred to as HoloGraphics. Several possibilities have been investigated that allow merging computer generated graphics and holograms [1]. The goal is to combine the advantages of conventional holograms (i.e. extremely high visual quality and realism, support for all depth queues and for multiple observers at no computational cost, space efficiency, etc.) with the advantages of today’s computer graphics capabilities (i.e. interactivity, real-time rendering, simulation and animation, stereoscopic and autostereoscopic presentation, etc.). The results of these investigations are presented in this chapter. KW - Erweiterte Realität KW - CGI KW - Hologramm KW - Projektionsapparat KW - Rendering KW - Scanning KW - Reconstruction KW - computer grafik KW - computer graphics Y1 - 2005 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20111215-7365 ER - TY - RPRT A1 - Föckler, Paul A1 - Zeidler, Thomas A1 - Bimber, Oliver T1 - PhoneGuide: Museum Guidance Supported by On-Device Object Recognition on Mobile Phones N2 - We present PhoneGuide – an enhanced museum guidance approach that uses camera-equipped mobile phones and on-device object recognition. Our main technical achievement is a simple and light-weight object recognition approach that is realized with single-layer perceptron neuronal networks. In contrast to related systems which perform computational intensive image processing tasks on remote servers, our intention is to carry out all computations directly on the phone. This ensures little or even no network traffic and consequently decreases cost for online times. Our laboratory experiments and field surveys have shown that photographed museum exhibits can be recognized with a probability of over 90%. We have evaluated different feature sets to optimize the recognition rate and performance. Our experiments revealed that normalized color features are most effective for our method. Choosing such a feature set allows recognizing an object below one second on up-to-date phones. The amount of data that is required for differentiating 50 objects from multiple perspectives is less than 6KBytes. KW - Neuronales Netz KW - Objekterkennung KW - Handy KW - Museum KW - Mobile phones KW - object recognition KW - neural networks KW - museum guidance Y1 - 2005 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20111215-6500 ER - TY - RPRT A1 - Gross, Tom A1 - Marquardt, Nicolai T1 - CollaborationBus: An Editor for the Easy Configuration of Complex Ubiquitous Environment N2 - Early sensor-based infrastructures were often developed by experts with a thorough knowledge of base technology for sensing information, for processing the captured data, and for adapting the system’s behaviour accordingly. In this paper we argue that also end-users should be able to configure Ubiquitous Computing environments. We introduce the CollaborationBus application: a graphical editor that provides abstractions from base technology and thereby allows multifarious users to configure Ubiquitous Computing environments. By composing pipelines users can easily specify the information flows from selected sensors via optional filters for processing the sensor data to actuators changing the system behaviour according to the users’ wishes. Users can compose pipelines for both home and work environments. An integrated sharing mechanism allows them to share their own compositions, and to reuse and build upon others’ compositions. Real-time visualisations help them understand how the information flows through their pipelines. In this paper we present the concept, implementation, and early user feedback of the CollaborationBus application. KW - Angewandte Informatik KW - Ubiquitous Computing KW - Editor KW - Konfiguration KW - Ubiquitous Computing KW - editor KW - configuration Y1 - 2006 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20111215-7463 ER - TY - RPRT A1 - Gross, Tom A1 - Egla, Tareg A1 - Marquardt, Nicolai T1 - Sens-ation: A Service-Oriented Platform for Developing Sensor-Based Infrastructures N2 - In today’s information society the vast technical progress and the sinking cost of information and communication technology provide new opportunities for information supply, and new technical support for communication and cooperation over distance. These trends also entail challenges such as supplying information that is adequate for a particular person in a specific situation as well as managing communication among geographically distributed parties efficiently. Context-aware systems that use sensors in order to analyse their environment and to adapt their behaviour. Yet, adequate tools for developing sensor-based infrastructures are missing. We have designed and developed Sens-ation, an open and generic service-oriented platform, which provides powerful, yet easy-to-use, tools to software developers who want to develop context-aware, sensor-based infrastructures. The service-oriented paradigm of Sens-ation enables standardised communication within individual infrastructures, between infrastructures and their sensors, but also among distributed infrastructures. On a whole, Sens-ation facilitates the development allowing developers to concentrate on the semantics of their infrastructures, and to develop innovative concepts and implementations of context-aware systems. KW - Angewandte Informatik KW - Service-orientierte Plattform KW - Sensor-basierte Infrastrukture KW - Ubiquitous Computing KW - Computer-Supported Cooperative Work KW - Service-Oriented Platform KW - Sensor-Based Infrastructure KW - Ubiquitous Computing KW - Computer-Supported Cooperative Work Y1 - 2006 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20111215-7447 ER - TY - RPRT A1 - Gross, Tom A1 - Oemig, Christoph T1 - 'Sorry, Pal---What I See is Usually Not What You Get!': The Role of Reciprocity in Information Disclosure N2 - For efficient distant cooperation the members of workgroups need information about each other. This need for information disclosure often conflicts with the users' wishes for privacy. In the literature often reciprocity is suggested as a solution to this trade-off. Yet, this conception of reciprocity and its enforcement by systems does not match reality. In this paper we present our study's major findings investigating the role of reciprocity among which we found that participants greatly disregarded the above conception. Additionally we discuss their significant implications for the design of systems seeking to disclose personal information. KW - Angewandte Informatik KW - Awareness KW - Gruppengewahrsein KW - Privatsphaere KW - Reziprozitaet KW - Awareness KW - information sharing KW - privacy KW - reciprocity Y1 - 2006 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20111215-7474 ER - TY - THES A1 - Fuß, Michael T1 - Erstellung eines geeigneten Web-Content Management-Systems zugeschnitten auf die Anforderungen der Internetpräsentation von Lehr- und Forschungseinrichtungen. N2 - Die heute erhältlichen Web-Content Management-Systeme (WCMS) verfügen über ein umfangreiches und breit gefächertes Angebot an Funktionen, die weit über die, zur Redaktion und zum Management von Internetpräsentationen, not-wendigen Grundanforderungen hinausgehen. Das macht diese Systeme in ih-ren Einsatz sehr flexibel und deckt vielfältige Anforderungen der Endanwender ab. Andererseits steigt durch die dadurch bedingte Komplexität der Arbeitsauf-wand erheblich und die Bedien- und Benutzerfreundlichkeit sinkt. Gerade für kleinere Internetpräsentationen, die ohne aufwendige Interaktionsmöglichkeiten aber auf häufig wechselndem Informationsangeboten aufwarten, wäre dies in seiner Grundfunktionalität reduziertes System vorteilhaft. Ein solches reduziertes Web-Content Management-System soll während der Diplomarbeit entworfen und beispielhaft implementiert werden. Als Ausgangs- und Orientierungspunkt soll hierzu die Internetpräsentation der Professur Informations- und Wissensverarbeitung dienen. Zur softwaretechnischen Umsetzung sind PHP und MySQL in Verbindung mit regulären HTML und CSS zu be-nutzen. Für das weitere Vorgehen müssen zunächst die Struktur und der Aufbau der Internetpräsentation der Professur analysiert, strukturiert und formalisiert werden. Anschließend sind die am häufigsten professionell genutzten Webcontent-Managementsysteme (TYPO3 und weitere siehe www.opensourcecms.com) hinsichtlich der durch sie angebotenen Grundfunktionalitäten und der verwen-deten Templates und Vorlagen zu untersuchen. Die aus dieser Analyse resultierenden Ergebnisse sind Ausgangspunkt für die Anforderungsdefinition des zu erstellenden Mini-WCMS. Anschließend ist eine prototypische Implementierung des theoretisch entstan-denen Systems, zugeschnitten auf die speziellen Bedürfnisse der Professur, vorzunehmen und hinsichtlich seiner Eignung zu diskutieren. KW - Content Management KW - PHP KW - MySQL Y1 - 2006 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20111215-7436 N1 - Der Volltext-Zugang wurde im Zusammenhang mit der Klärung urheberrechtlicher Fragen mit sofortiger Wirkung gesperrt. ER -