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- Fachbereich 4 (298) (remove)
Planning routes for trucks with a trailer is a complex procedure. In order to simplify this process, a route is segmented into elementary components, which represents basic motions of the considered vehicle. These elementary components are called maneuvers and are composed of two party. First, paths are constructed for certain reference points. Second, the vehicle is enclosed by a corridor during the execution of a maneuver. The paths of the vehicle have to take driveability into consideration. They must respect the kinematic constraints of the vehicle. The maneuver corridor can be used as a basis to guarantee collision-free motion planing. No part of the vehicle leaves the corridor during the maneuver. There are different types of maneuvers. Currently, the bending maneuver, the cusp maneuver and the straight line maneuver can be distinguished. In addition, a maneuver can be created with two different construction methods, the conventional and the iterative method.
In this thesis, a data structure to construct a maneuver is designed and implemented. The data structure is integrated into an already existing tool. The user can interact with the software to adjust various parameters of a maneuver. Afterwards the maneuver is generated based on these parameters. This also includes a visualization within the software, which can plot the parts of a maneuver. The visualization can be exported to an image file.
In der Betriebswirtschaft wird das Steuern von Preis und Kapazität einer be- stimmten Ware oder Dienstleistung als Yield oder Revenue Management bezeich- net. Im wesentlichen geht es darum, die vorhandenen knappen Gütter ertrags- bzw. erlösmaximal zu vermarkten. Dies wird zum einen durch Erstellen von Pro- gnosen über das zukünftige Kundenverhalten, zum anderen durch den Einsatz verschiedener Ertragsmaximierungstechniken, wie z.B. Preisdifferenzierung oder Überbuchung, erreicht. So lassen sich die Zahlungsbereitschaften verschiedener Nachfragegruppen optimal abschöpfen, der Auslastungsgrad erhöhen und somit der Ertrag optimieren. Das Yield-Management entstand nach der Deregulierung des amerikanischen Luft- verkehrsmarktes im Jahre 1978, als zahlreiche Fluggesellschaften den etablierten Airlines Konkurenz machten. Sie zielten mit ihren günstigen Preisen vor allem auf Freizeitreisende und konnten so erhebliche Marktanteile gewinnen. Im Zuge des Preiskampfes entwickelten Fluggesellschaften verschiedene Techniken zur Steuerung der Preise und Kapazitäten um ihre Erlöse zu maximieren. So konnte z.B. American Airlines trotzt schlechterer Kostenstruktur viele Wettbewerber vom Markt drängen, als sie 1985 zum ersten mal das neue Konzept vollständig eingesetzt haben. Vergl. (vergl. uRK05, Kap. A). Im folgenden haben andere Branchen, wie Autovermieter und Hoteliers, die Kon- zepte des Yield-Managements adoptiert und erfolgreich eingesetzt. Die Mechanis- men der Nachfrageprognosen und Optimierung der Produktsegmente, Kontingente und Preise sind stets die gleichen. Es ädern sich lediglich die branchenspezifischen Parameter sowie Optimierungsziele. Im Rahmen dieser Diplomarbeit werden die möglichen Einsatzgebiete des Yield- Managements untersucht. Es wird der Versuch unternommen ein allgemeingültiges Model zur Steuerung von Preis und Kapazität von Dienstleistungen oder Pro- dukten zu entwickeln. Das Model wird dann am speziellen Beispiel der Touris- musbranche, insbesondere der Produkte eines Reiseveranstalters, in einem Yield- Management-Modul des Reiseveranstaltersystems TourPaX implementiert.
Ziel dieser Ausarbeitung ist es, das Wippe-Experiment gemäß dem Aufbau innerhalb der AG Echtzeitsysteme unter Leitung von Professor Dr. Dieter Zöbel mithilfe eines LEGO Mindstorms NXT Education-Bausatzes funktionsfähig nachzubauen und das Vorgehen zu dokumentieren. Der dabei entstehende Programmcode soll didaktisch aufbereitet und eine Bauanleitung zur Verfügung gestellt werden. Dies soll gewährleisten, dass Schülerinnen und Schüler auch ohne direkten Zugang zu einer Hochschule oder ähnlichem Institut den Versuchsaufbau Wippe möglichst unkompliziert im Klassenraum erleben können.
Bei dem für dieses Schutzprofil (engl. "Protection Profile" im Folgenden PP genannt) herangezogenen Evaluationsgegenstand (im Folgenden EVG genannt) handelt es sich um einen Router, der einen Schutz gegen Online-Überwachung bietet. Der EVG-Typ ist hierbei ein handelsüblicher Internet-Router, der in Privathaushalten und kleineren Firmen eingesetzt wird. Der EVG umfasst den gesamten Router, so dass sowohl die Hardwarekomponenten als auch die Softwarekomponenten betrachtet werden. Es ist dabei irrelevant, ob es ein Modell mit integriertem Breitband-Modem ist oder ob dieses separat angeschlossen ist.
ERP market analysis
(2013)
Der aktuelle ERP Markt wird dominiert von den fünf größten Anbietern SAP, Oracle, Microsoft, Infor und Sage. Da der Markt und die angebotenen Lösungen vielfältig sind, bedarf es einer fundierten Analyse der Systeme. Die Arbeit beleuchtet dabei anhand ausgesuchter Literatur und Kennzahlen der verschiedenen Unternehmen die theoretische Seite der angebotenen Lösungen der fünf großen ERP Anbieter. Daneben wird die Nutzung der Systeme in der Praxis anhand der Befragung von sechs Anwendern analysiert und die Systeme miteinander verglichen.
Ziel der Arbeit ist es, dass die Forschungsfragen beantwortet werden und dass es bezogen auf die Systeme dem Leser der Arbeit ersichtlich wird, welches ERP System für welche Unternehmensbranche und Unternehmensgröße am besten geeignet ist.
Des Weiteren gibt die Arbeit Aufschluss darüber, welche Trends für ERP Systeme für die Zukunft zu erwarten sind und welche Herausforderungen sich dadurch für die Unternehmen stellen.
The purpose of this bachelor- thesis is to teach Lisa - a robot of the university of Koblenz- AGAS department developed for participation in the @home league of the RoboCup - to draw. This requires the expansion of the robbie software framework and the operation of the robot- hardware components. Under consideration of a possible entry in the Open Challenge of the @home RoboCup, the goals are to detect a sheet of paper using Lisa- visual sensor, a Microsoft Kinect and draw on it using her Neuronics Katana robot arm. In addition, a pen mounting for the arm- gripper has to be constructed.
Outlined within this thesis are the procedures utilized to convert an image template into movement of the robotic arm, which in turn leads to drawing of a painting by the pen attached to the arm on a piece of paper detected by the visual sensor through image processing. Achieved were the parsing and drawing of an object made up of an indefinite amount of straight lines from a SVG-file onto a white sheet of paper, detected on a slightly darker surface and surrounded by various background objects or textures.
In dieser Arbeit wird eine Softwarebibliothek zur Nutzung des USB-Hostmodus von Mikrocontrollern der Baureihe AT90USB entwickelt. Die Eigenschaften des USB werden erläutert und darauf aufbauend die Hardware des verwendeten Mikrocontrollers beschrieben. Anschließend wird die entwickelte Software und deren Funktionsweise erläutert. Abschließend werden Treiber für diverse Geräteklassen vorgestellt, die auch dem Test der entwickelten Bibliothek dienen.
Mit der rasant fortschreitenden Entwicklung von Informatiksystemen und Algorithmen ist die Erfassung und Verarbeitung von Daten in immer größeren Umfang möglich. Verschiedene Initiativen haben sich dadurch motiviert zur Aufgabe gemacht, über die daraus resultierenden Gefahren für die Persönlichkeitsrechte und die Meinungsfreiheit aufzuklären. Dies soll einen bewussteren Umgang mit personenbezogenen Daten zur Folge haben. Zum Schutz der Grundrechte bedarf es aufgeklärter und informierter Nutzer, diese Aufgabe können die Initiativen allerdings nicht alleine leisten. Die staatlichen Bildungseinrichtungen und besonders die Schulen, stehen hier in der Pflicht sich an der Lösung des Problems zu beteiligen. Um ihrem Bildungsauftrag im vollen Ausmaß gerecht zu werden, bedarf es struktureller Änderungen, wie der Änderung von Lehrplänen. Solange diese allerdings nicht erfolgt sind, muss in und mit den gegebenen Strukturen gearbeitet werden. Eine Plattform dafür bietet der schulische Informatikunterricht.
Die vorliegende Arbeit stellt eine Unterrichtsreihe zur Behandlung von Datenschutz und Datensicherheit vor. Es wurde dabei ein kontextorientierter Ansatz nach Vorbild von Informatik im Kontext gewählt. Die Reihe Smartphone-Applikationen beinhaltet über die genannten primären Themen der Unterrichtsreihe hinaus weitere Dimensionen, die bei der Nutzung von Smartphones auftreten. Durch den direkten Bezug zum Alltag der Schüler soll dabei eine möglichst hohe Betroffenheit erzeugt werden. Dadurch sollen die Schüler ihr bisheriges Nutzungsverhalten überdenken und im besten Fall ihren Altersgenossen als Vorbilder dienen. Die Prüfung der Durchführbarkeit der Reihe im Unterricht steht noch aus. Diese war im Rahmen dieser Arbeit, begründet durch die begrenzte Bearbeitungszeit, nicht zu leisten.
The interaction with the Wii Remote controller consists mainly in calculating rotations of the controller. The subject of this project is to make a real 1 on 1 mapping of the orientation and position of the Wiimote in a virtual application possible. The position of the Wiimote shall be calculated by stereotracking with two cameras.
The project shall be demonstrated in different applications.
In this master thesis some new helpful features will be added to the Spanning Tree Simulator. This simulator was created by Andreas Sebastian Janke in his bachelor thesis [Jan10b] in 2010. It is possible to visualize networks which are defined in a configuration file. Each of them is a XML representation of a network consisting of switches and hosts. After loading such a file into the program it is possible to run the Spanning Tree Algorithm IEEE 802.1D. In contrast to the previous version only the switches are implemented as threads. When the algorithm is finished a spanning tree is built. This means, that messages cannot run into loops anymore. This is important because loops can cause a total breakdown of the communication in a network, if the running routing protocols cannot handle loops.
Schema information about resources in the Linked Open Data (LOD) cloud can be provided in a twofold way: it can be explicitly defined by attaching RDF types to the resources. Or it is provided implicitly via the definition of the resources´ properties.
In this paper, we analyze the correlation between the two sources of schema information. To this end, we have extracted schema information regarding the types and properties defined in two datasets of different size. One dataset is a LOD crawl from TimBL- FOAF profile (11 Mio. triple) and the second is an extract from the Billion Triples Challenge 2011 dataset (500 Mio. triple). We have conducted an in depth analysis and have computed various entropy measures as well as the mutual information encoded in this two manifestations of schema information.
Our analysis provides insights into the information encoded in the different schema characteristics. It shows that a schema based on either types or properties alone will capture only about 75% of the information contained in the data. From these observations, we derive conclusions about the design of future schemas for LOD.
Modeling and publishing Linked Open Data (LOD) involves the choice of which vocabulary to use. This choice is far from trivial and poses a challenge to a Linked Data engineer. It covers the search for appropriate vocabulary terms, making decisions regarding the number of vocabularies to consider in the design process, as well as the way of selecting and combining vocabularies. Until today, there is no study that investigates the different strategies of reusing vocabularies for LOD modeling and publishing. In this paper, we present the results of a survey with 79 participants that examines the most preferred vocabulary reuse strategies of LOD modeling. Participants of our survey are LOD publishers and practitioners. Their task was to assess different vocabulary reuse strategies and explain their ranking decision. We found significant differences between the modeling strategies that range from reusing popular vocabularies, minimizing the number of vocabularies, and staying within one domain vocabulary. A very interesting insight is that the popularity in the meaning of how frequent a vocabulary is used in a data source is more important than how often individual classes and properties arernused in the LOD cloud. Overall, the results of this survey help in understanding the strategies how data engineers reuse vocabularies, and theyrnmay also be used to develop future vocabulary engineering tools.
In automated theorem proving, there are some problems that need information on the inequality of certain constants. In most cases this information is provided by adding facts which explicitly state that two constants are unequal. Depending on the number of constants, a huge amount of this facts can clutter the knowledge base and distract the author and readers of the problem from its actual proposition. For most cases it is save to assume that a larger knowledge base reduces the performance of a theorem prover, which is another drawback of explicit inequality facts. Using the unique name assumption in those reasoning tasks renders the introduction of inequality facts obsolete as the unique name assumptions states that two constants are identical iff their interpretation is identical. Implicit handling of non-identical constants makes the problems easier to comprehend and reduces the execution time of reasoning. In this thesis we will show how to integrate the unique name assumption into the E-hyper tableau calculus and that the modified calculus is sound and complete. The calculus will be implemented into the E-KRHyper theorem prover and we will show, by empiric evaluation, that the changed implementation, which is able to use the unique name assumption, is superior to the traditional version of E-KRHyper.
Six and Gimmler have identified concrete capabilities that enable users to use the Internet in a competent way. Their media competence model can be used for the didactical design of media usage in secondary schools. However, the special challenge of security awareness is not addressed by the model. In this paper, the important dimension of risk and risk assessment will be introduced into the model. This is especially relevant for the risk of the protection of personal data and privacy. This paper will apply the method of IT risk analysis in order to select those dimensions of the Six/Gimmler media competence model that are appropriate to describe privacy aware Internet usage. Privacy risk aware decisions for or against the Internet usage is made visible by the trust model of Mayer et al.. The privacy extension of the competence model will lead to a measurement of the existing privacy awareness in secondary schools, which, in turn, can serve as a didactically well-reasoned design of Informatics modules in secondary schools. This paper will provide the privacy-extended competence model, while empirical measurement and module design is planned for further research activities.
In this thesis the feasibility of a GPGPU (general-purpose computing on graphics processing units) approach to natural feature description on mobile phone GPUs is assessed. To this end, the SURF descriptor [4] has been implemented with OpenGL ES 2.0/GLSL ES 1.0 and evaluated across different mobile devices. The implementation is multiple times faster than a comparable CPU variant on the same device. The results proof the feasibility of modern mobile graphics accelerators for GPGPU tasks especially for the detection phase in natural feature tracking used in augmented reality applications. Extensive analysis and benchmarking of this approach in comparison to state of the art methods have been undertaken. Insights into the modifications necessary to adapt and modify the SURF algorithm to the limitations of a mobile GPU are presented. Further, an outlook for a GPGPU-based tracking pipeline on a mobile device is provided.
In a software reengineering task legacy systems are adapted computer-aided to new requirements. For this an efficient representation of all data and information is needed. TGraphs are a suitable representation because all vertices and edges are typed and may have attributes. Further more there exists a global sequence of all graph elements and for each vertex exists a sequence of all incidences. In this thesis the "Extractor Description Language" (EDL) was developed. It can be used to generate an extractor out of a syntax description, which is extended by semantic actions. The generated extractor can be used to create a TGraph representation of the input data. In contrast to classical parser generators EDL support ambiguous grammars, modularization, symbol table stacks and island grammars. These features simplify the creation of the syntax description. The collected requirements for EDL are used to determine an existing parser generator which is suitable to realize the requirements.
After that the syntax and semantics of EDL are described and implemented using the suitable parser generator. Following two extractors one for XML and one for Java are created with help of EDL. Finally the time they need to process some input data is measured.
In der Diplomarbeit soll die Verwendung und Möglichkeit zur Einbindung eines Eyetrackers in der Bildersuche untersucht werden. Eyetracker sind Geräte zur Blickerfassung. Sie werden häufig in Design- und Usabilitystudien verwendet, um Informationen über den Umgang der Benutzer mit dem Produkt zu untersuchen. Seit einiger Zeit werden Augenbewegungen auch zur Erkennung von benutzerrelevanten Informationen und Bereichen verwendet, wie zum Beispiel bei dem Projekt Text 2.05 [4]. Hierbei werden Blickrichtung und -fixierung benutzt, um eine Interaktion mit dem Leser eines Textes auf eine möglichst einfache, dabei aber subtile Weise zu ermöglichen.
On-screen interactive presentations have got immense popularity in the domain of attentive interfaces recently. These attentive screens adapt their behavior according to the user's visual attention. This thesis aims to introduce an application that would enable these attentive interfaces to change their behavior not just according to the gaze data but also facial features and expressions. The modern era requires new ways of communications and publications for advertisement. These ads need to be more specific according to people's interests, age, and gender. When advertising, it's important to get a reaction from the user but not every user is interested in providing feedback. In such a context more, advance techniques are required that would collect user's feedback effortlessly. The main problem this thesis intends to resolve is, to apply advanced techniques of gaze and face recognition to collect data about user's reactions towards different ads being played on interactive screens. We aim to create an application that enables attentive screens to detect a person's facial features, expressions, and eye gaze. With eye gaze data we can determine the interests and with facial features, age and gender can be specified. All this information will help in optimizing the advertisements.
Femto is a programming environment designed to run on an ATmega based computing platform with VGA video output and a PS/2 keyboard interface. It consists of a simple text editor and an interpreter. With Femto it is possible to write and run small programs directly on the microcontroller. The interpreted language is called Femtoscript and is similar to Javascript. It was developed as part of this project. The interpreter is written in C and can be ported to other platforms with relatively small effort.
We introduce linear expressions for unrestricted dags (directed acyclic graphs) and finite deterministic and nondeterministic automata operating on them. Those dag automata are a conservative extension of the Tu,u-automata of Courcelle on unranked, unordered trees and forests. Several examples of dag languages acceptable and not acceptable by dag automata and some closure properties are given.
Expert-driven business process management is an established means for improving efficiency of organizational knowledge work. Implicit procedural knowledge in the organization is made explicit by defining processes. This approach is not applicable to individual knowledge work due to its high complexity and variability. However, without explicitly described processes there is no analysis and efficient communication of best practices of individual knowledge work within the organization. In addition, the activities of the individual knowledge work cannot be synchronized with the activities in the organizational knowledge work.rnrnSolution to this problem is the semantic integration of individual knowledgernwork and organizational knowledge work by means of the patternbased core ontology strukt. The ontology allows for defining and managing the dynamic tasks of individual knowledge work in a formal way and to synchronize them with organizational business processes. Using the strukt ontology, we have implemented a prototype application for knowledge workers and have evaluated it at the use case of an architectural fifirm conducting construction projects.
In this thesis, a computer simulation model created in the early 1960s by Robert P. Abelson and Alex Bernstein is examined. The simulation described was built to reflect processes involved in formation of a public opinion within a population taking into account direct communication as well as communication mediated through mass media. After describing and thoroughly analyzing the available description of the simulation model this thesis produces the implementation of a running software simulation system implementing this model. The software is developed and described using common computer science procedures and finally examined for its properties during different tests.
Der Fachbereich 4 (Informatik) besteht aus fünfundzwanzig Arbeitsgruppen unter der Leitung von Professorinnen und Professoren, die für die Forschung und Lehre in sechs Instituten zusammenarbeiten.
In jedem Jahresbericht stellen sich die Arbeitsgruppen nach einem einheitlichen Muster dar, welche personelle Zusammensetzung sie haben, welche Projekte in den Berichtszeitraum fallen und welche wissenschaftlichen Leistungen erbracht wurden. In den folgenden Kapiteln werden einzelne Parameter aufgeführt, die den Fachbereich in quantitativer Hinsicht, was Drittmitteleinwerbungen, Abdeckung der Lehre, Absolventen oder Veröffentlichungen angeht, beschreiben.
Der Fachbereich 4 (Informatik) besteht aus fünfundzwanzig Arbeitsgruppen unter der Leitung von Professorinnen und Professoren, die für die Forschung und Lehre in sechs Instituten zusammenarbeiten.
In jedem Jahresbericht stellen sich die Arbeitsgruppen nach einem einheitlichen Muster dar, welche personelle Zusammensetzung sie haben, welche Projekte in den Berichtszeitraum fallen und welche wissenschaftlichen Leistungen erbracht wurden. In den folgenden Kapiteln werden einzelne Parameter aufgeführt, die den Fachbereich in quantitativer Hinsicht, was Drittmitteleinwerbungen, Abdeckung der Lehre, Absolventen oder Veröffentlichungen angeht, beschreiben.
Der Fachbereich 4 (Informatik) besteht aus fünfundzwanzig Arbeitsgruppen unter der Leitung von Professorinnen und Professoren, die für die Forschung und Lehre in sechs Instituten zusammenarbeiten.
In jedem Jahresbericht stellen sich die Arbeitsgruppen nach einem einheitlichen Muster dar, welche personelle Zusammensetzung sie haben, welche Projekte in den Berichtszeitraum fallen und welche wissenschaftlichen Leistungen erbracht wurden. In den folgenden Kapiteln werden einzelne Parameter aufgeführt, die den Fachbereich in quantitativer Hinsicht, was Drittmitteleinwerbungen, Abdeckung der Lehre, Absolventen oder Veröffentlichungen angeht, beschreiben.
Der Fachbereich 4: Informatik forscht und lehrt in einem diversifzierten Spektrum der Digitalisierung von Wirtschaft, Gesellschaft und öffentlicher Verwaltung. Die Themen schließen Grundlagenforschung und anwendungsorientierte sowie interdisziplinäre Forschung und Lehre ein. Sie reichen von der Kerninformatik bis zu grafschen und ökonomischen Aspekten der Informationsverarbeitung, wie nachfolgende Grafk verdeutlicht (die einzelnen Institute und ihre zugehörigen Arbeitsgruppen stellen sich in den nachfolgenden Kapiteln vor):
Forwarding loops
(2013)
Pedestrian Detection in digital images is a task of huge importance for the development of automaticsystems and in improving the interaction of computer systems with their environment. The challenges such a system has to overcome are the high variance of the pedestrians to be recognized and the unstructured environment. For this thesis, a complete system for pedestrian detection was implemented according to a state of the art technique. A novel insight about precomputing the Color Self-Similarity accelerates the computations by a factor of four. The complete detection system is described and evaluated, and was published under an open source license.
To meet the growing demands in the automotive industry, car manufacturers constantly reduce the depth of production and shift value-adding processes to the suppliers. This requires that companies work together more closely and promotes the creation of complex logistics networks. To meet the requirements for information exchange, a consortium of automobile manufacturers launched the project RFID-based Automotive Network (RAN) in 2009. The initiative aims at creating a standardized architecture for efficient material flow management along the entire supply chain. Core component of this architecture is the Informationbroker, an information unit which automatically communicates data which is captured via Auto-ID technology to supply chain participants. The thesis focuses in cooperation with the IBS AG, a software company and consortium partner in the project, on the exchange of goods data.
At first, theoretical foundations are presented by describing the characteristics of a supply chain and explaining standardization efforts and related processes. The chapter on the supply chain focuses on trends in the automotive industry to create a link to the project. The topic of standardization provides in-depth information on electronic data exchange standards in order to additionally create a transition to the Informationbroker concept. In the analytical part, reference projects will be presented with a similar problem and set in relation to RAN. According to project documents, system requirements will be defined and models will be created in order to illustrate the problem. Rich Pictures are used to describe the basis and target state.
Based on these models, the flow of goods related data is depicted between two companies and the role of the Informationbroker for the information exchange is clarified. The thesis aims at establishing an understanding of the challenges of the project and how the proposed concepts of the initiative can lead to an optimization of an automotive supply chain.
Die Siedlungsgeschichte im Rhein-Mosel-Dreieck reicht zurück bis in die römische Zeit. Entlang der beiden großen Flüsse finden sich zahlreiche Beispiele historischer Architektur. In diese Kategorie lässt sich auch die ehemalige Burganlage im Kondertal einordnen, die sich auf dem Nordwest-Ausläufer des Hinterberges befindet. Um eine genauere Vorstellung der Burganlage zu erhalten, sollte ein Computermodell erstellt werden. Die praktische Umsetzung dieses Modells ist Thema der vorliegenden Studienarbeit. Von der Erstellung eines "einfachen 3D-Modells" mittels einer dazu mächtigen Software kam man schnell ab. Stattdessen sollte das Ziel der Arbeit ein Programm sein, dass es dem Benutzer ermöglicht die Burganlage interaktiv aufzubauen und in beliebiger Form zu verändern.
The purpose of this master thesis is to enable the Robot Lisa to process complex commands and extract the necessary information in order to perform a complex task as a sequence of smaller tasks. This is intended to be achieved by the improvement of the understanding that Lisa has of her environment by adding semantics to the maps that she builds. The complex command itself will be expected to be already parsed. Therefore the way the input is processed to become a parsed command is out of the scope of this work. Maps that Lisa builds will be improved by the addition of semantic annotations that can include any kind of information that might be useful for the performance of generic tasks. This can include (but not necessarily limited to) hierarchical classifications of locations, objects and surfaces. The processing of the command in addition to some information of the environment shall trigger the performance of a sequence of actions. These actions are expected to be included in Lisa- currently implemented tasks and will rely on the currently existing modules that perform them.
Nevertheless the aim of this work is not only to be able to use currently implemented tasks in a more complex sequence of actions but also make it easier to add new tasks to the complex commands that Lisa can perform.
This paper critically examines the Google Calendar. For this purpose, the offered functions of the core product are studied on privacy aspects. On one hand, it is identified, to which extent the product could infringe the users" privacy, on the other accuring risks are discussed. Furthermore, the functions in terms of their use for both, the service provider Google and for the user, are considered. A detailed analysis demonstrates the critical aspects, in which we have to decide between privacy and functionality. The identified solutions to minimize discussed risks of IT security mechanisms, are presented, discussed and analyzed in terms of their feasibility. Afterwards the individual solutions are summarized in a security concept and other requirements are explained. Finally, a Firefox-Addon which implements the described solution concept should be created, to resolve the existing weaknesses to the best of its ability. Ultimately, the functionality of the addon with technical implementation is illustrated in detail.
In recent years, traceability has been more and more universally accepted as being a key factor for the success of software development projects. However, the multitude of different, not well-integrated taxonomies, approaches and technologies impedes the application of traceability techniques in practice. This paper presents a comprehensive view on traceability, pertaining to the whole software development process. Based on graph technology, it derives a seamless approach which combines all activities related to traceability information, namely definition, recording, identification, maintenance, retrieval, and utilization in one single conceptual framework. The presented approach is validated in the context of the ReDSeeDS-project aiming at requirements-based software reuse.
In this thesis we exercise a wide variety of libraries, frameworks and other technologies that are available for the Haskell programming language. We show various applications of Haskell in real-world scenarios and contribute implementations and taxonomy entities to the 101companies system. That is, we cover a broad range of the 101companies feature model and define related terms and technologies. The implementations illustrate how different language concepts of Haskell, such as a very strong typing system, polymorphism, higher-order functions and monads, can be effectively used in the development of information systems. In this context we demonstrate both advantages and limitations of different Haskell technologies.
The principles of project management are due to the influences of economic conditions and technological development in transition [Wills 1998 & Jonsson et al. 2001]. The increasing in-ternationalization, shortened time to market, changing labor costs and the increasing involve-ment of professionals distributed geographical locations are drivers of the transformations of the project landscape [Evaristo/van Fenema 1999]. Resulting from this, the use of collabora-tive technologies is a crucial factor for the success of a project. [Romano et al. 2002]. Previous research on the use of collaborative technologies for project management purposes focuses especially the development of model-like, universal system architectures to identify the requirements for a specially designed collaborative project management system. This thesis investigates the challenges and benefits that arise when an organisation imple-ments business software for the purpose of collaborative project management.