Fachbereich 4
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This study investigates crowdfunding, a new form of financing projects. In the past years more and more crowdfunding platforms emerged. The main question is if crowdfunding is able to compete with the traditional types of financing social projects. The history and development of crowdfunding is presented in this paper. The different crowdfunding models are explained. An overview of German crowd funding platforms is presented. Based on successful social crowdfunding projects a list of key success factors is listed and described. In a case study a concept for financing a social project through crowdfunding is developed upon the previous studies.
The Microsoft Kinect is currently polular in many application areas because ofrnthe cheap price and good precission. But controlling the cursor is unapplicablerndue to jitter in the skeletton data. My approach will try to stabilisize the cursor position with common techniques from image processing. The input therefore will be the Kinect color camera. A final position will be calculated using the different positions of the tracking techniques. For controlling the cursor the right hand should be tracked. A simple click gesture will also be developed. The evaluation will show if this approach was succesfull.
Large amounts of qualitative data make the utilization of computer-assisted methods for their analysis inevitable. In this thesis Text Mining as an interdisciplinary approach, as well as the methods established in the empirical social sciences for analyzing written utterances are introduced. On this basis a process of extracting concept networks from texts is outlined and the possibilities of utilitzing natural language processing methods within are highlighted. The core of this process is text processing, to whose execution software solutions supporting manual as well as automated work are necessary. The requirements to be met by these solutions, against the background of the initiating project GLODERS, which is devoted to investigating extortion racket systems as part of the global fiσnancial system, are presented, and their fulσlment by the two most preeminent candidates reviewed. The gap between theory and pratical application is closed by a prototypical application of the method to a data set of the research project utilizing the two given software solutions.
This thesis describes the implementation of a Path-planning algorithm for multi-axle vehicles using machine learning algorithms. For that purpose, a general overview over Genetic Algorithms is given and alternative machine learning algorithms are briefly explained. The software developed for this purpose is based on the EZSystem Simulation Software developed by the AG Echtzeitysteme at the University Koblenz-Landau and a path correction algorithm developed by Christian Schwarz, which is also detailed in this paper. This also includes a description of the vehicle used in these simulations. Genetic Algorithms as a solution for path-planning in complex scenarios are then evaluated based on the results of the developed simulation software and compared to alternative, non-machine learning solutions, which are also shortly presented.
In this thesis we discuss the increasingly important routing aggregation and its consequences on avoiding routing loops. As basis for implementation and evaluation I will use the RMTI protocol, developed at the University of Koblenz, which is an evolution of the RFC2453 specified in the Routing Information Protocol version 2. The virtual network environment Virtual Network User Mode Linux (VNUML) is used within this thesis as environment. With VNUML it is possible to operate and evaluate real network scenarios in a virtual environment. The RMTI has already proven its ability to detect topological loops and thereby prevent the formation of these routing loops. In this thesis we will describe the function of the RMTI and then discuss under which circumstances we can use routing aggregation, without it resulting in routing anomalies. In order to implement these changes it is essential to have a deeper understanding of the structure of routing tables, so the construction will be explained using reference to examples. There follows a description of which points have to be changed, in the RMTI in order to avoid loops despite aggregation. In Summary we will evaluate the affect the routing aggregation has on the reorganization ability of the virtual network.
Die weltweite Zugänglichkeit und umfangreiche Nutzung des Internets machen dieses Medium zu einem effizienten und beliebten Informations-, Kommunikations-, und Verkaufsinstrument. Immer mehr Menschen und Organisationen versuchen, diese Vorzüge durch eine eigene Website für ihre Zwecke zu verwenden. Als hilfreiches Mittel zur Optimierung von Webpräsenzen bewährte sich in den letzten Jahren der Einsatz von Web-Analytics-Software. Durch diese Software sind Websitebetreiber in der Lage, Informationen über die Besucher ihrer Website und deren Nutzungsverhalten zu sammeln und zu messen. Das angestrebte Resultat sind Optimierungsentscheidungen auf Basis von Daten an Stelle von Annahmen und wirkungsvolle Testmöglichkeiten.
Für den Bereich des E-Commerce existieren bis dato zahlreiche wissenschaftliche und praxiserprobte Hilfestellungen für Web-Analytics-Projekte. Informationswebsites hingegen werden trotz ihrer Wichtigkeit nur vereinzelt thematisiert. Um diesem Defizit entgegenzuwirken, hat Hausmann 2012 das Framework for Web Analytics entwickelt, welches dem Anwender ein hilfreiches Referenzmodell für sein Web Analytics-Vorhaben bietet. Diesen Ansatz weiter voranzutreiben ist das Ziel der Abschlussarbeit. Dazu wird mithilfe einer Literaturanalyse und einer Fallstudie das Framework validiert und ergänzt, sowie weitere Handlungsempfehlungen identifiziert. Als Ergebnis werden die wichtigsten Erkenntnisse dieser Forschung zusammengefasst und für den zukünftigen Gebrauch festgehalten.
Polsearchine: Implementation of a policy-based search engine for regulating information flows
(2013)
Many search engines regulate Internet communication in some way. It is often difficult for end users to notice such regulation, as well as obtaining background information for it. Additionally, the regulation can usually be circumvented easily. This bachelor thesis presents the prototypical metasearch engine "Polsearchine" for addressing these weaknesses. Its regulation is established through InFO, a model for regulating information flows developed by Kasten and Scherp. More precisely, the extension for regulating search engines SEFCO is being used. For retrieving search results, Polsearchine uses an external search engine API. The API can be interchanged easily to make this metasearch engine independent from one specific API.
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.
Forwarding loops
(2013)
This work deals with the migration of software systems towards the use of the character set defined in the Unicode standard. The work is performed as a case study on the document-management-system PROXESS. A conversion process will be designed that defines the working-steps of the migration for the entire system as well as an arbitrary decomposition of the system into individual modules. The working-steps for each module can be performed chronologically independent of each other to a great extend. For the conversion of the implementation, an approach of automatic recognition of usage patterns is applied. The approach aims at searching the abstract syntax tree for sequences of program instructions that can be assigned to a certain usage pattern. The usage pattern defines another sequence of instructions that acts as an sample solution for that usage pattern. The sample solution demonstrates the Unicode-based management of strings for that usage pattern. By applying a transformation rule, the original sequence of instructions is transferred to the sequence of instructions exposed by the sample solution of the related usage pattern. This mechanism is a starting point for the development of tools that perform this transformation automatically.