Open Topics

Praktikum, Bakkalaureatsarbeit

• browser for the MORSE repository
• administrate, create & checkin e.g., projects, models, artifacts

Develop an Eclipse plugin for the MORSE model-repository

MORSE, Eclipse

Verteilte Systeme

Not paid

Ta'id Holmes

Open

Praktikum, Bakkalaureatsarbeit

Manage Persons with Contact information and Groups/Group-Memberships. Export as vCard and Excel-Sheets, invoke Python scripts (for synchronizing mailinglists), etc.

Apache OFBiz

Verteilte Systeme

Not paid

Ta'id Holmes

Open

Diplomarbeit

Elaborate possible Design Patterns in workflow scenarios by the use of BPEL4WS

In object oriented programming languages the use of well known Design Patterns during development is widely accepted. The goal of this research topic is to analyze and evaluate the support for such patterns as "Chain of responsibility" and "Command" in BPEL. Based on the results of this work a framework will be developed for reuse and standardization in workflow design processes.

BPEL4WS

Not paid

Schahram Dustdar

Open

Vienna Service Infrastructure

Praktikum, Bakkalaureatsarbeit, Diplomarbeit

Develop a rich internet client for BPEL monitoring

The aim of this work is a practical approach to workflow based systems in web service scenarios. The range of used technologies covers BPEL (Business process execution language) and Web Services. The student will participate in the development of a rich internet client - based Workflow Management Suite. This suite is based on Flex and an Open Source BPEL Engine. An executing BPEL - process will be analyzed and the transfered data will be divided into different data streams. Based on the analysis results further operations are possible. The current solution is based on Flash and will be ported to the Flex Framework. Numerous enhancements to this suite are possible. The range covers topics from improving the visualization of analysis tools to enabling security management of all orchestrated web services.  

Axis [Apache Axis], BPEL Engine [ActiveBPEL], Flex 2.0 [Adobe]

Not paid

Martin Vasko

Open

Integration Lab, Vienna Service Infrastructure

Diplomarbeit

Design and develop components that will be used as a part of a semantically enhanced business process execution engine currently developed in a major EU project.

In a major FP6 EU project concerning the development of semantic business process management, an execution engine for business processes is developed. This engine is based on a well-known Open Source BPEL engine, and modified to support new BPEL language elements. The work for this thesis will focus on the design and development of several extensions of this execution engine.

UML Modelling tools, Java development tools

Not paid

Uwe Zdun

Open

Area Foundations

Diplomarbeit

Implementation of a DSL (using Frag) for specifying the concrete syntax of DSLs

Model-driven Domain-specific Languages (DSL) are based on a language/domain model (i.e., the DSL's meta-model) which determines the abstract syntax of the DSL. The sense of a DSL is to provide user-friendly interfaces (or editors) to the end-user for specifying concrete problems of the DSL's domain (i.e., instances of the language/domain model). The user interfaces (or editors) can provide either textual or graphical notations (i.e., the concrete syntax of the DSL) for defining the model instances. For an automatic generation of the user interfaces (or editors), based on the language/domain model, a specification of the concrete syntax is necessary (e.g., icons, special characters).
The aim of this work is to implement a DSL for specifying the concrete syntax of DSLs based on the language/domain model. Then, a code generator should be implemented which generates the user interface (or editor) automatically. Preferable, an Eclipse-plugin should be generated.

Frag, Graphical Editing Framework (GEF)

Not paid

Uwe Zdun

Ernst Oberortner

Open

Area Foundations

Diplomarbeit

Develop a framework for dynamic WS-BPEL analysis based program slicing techniques

Workflows (esp. Web service workflows) are typically developed by using WS-BPEL, the de-facto standard orchestration language for Web services. The drawback of WS-BPEL is the lack of a formal semantics. Numerous publications and tools exist which add such semantics to WS-BPEL. Most approaches use Petri nets, a suitable formalism for modeling and verifying workflows. Nevertheless, we believe that methods from program analysis research can result in better results (for optimization, error detection, etc).


This thesis should investigate methods combining static and dynamic analysis of WS-BPEL processes by using program slicing. The resulting framework should allow a WS-BPEL engine to perform dynamic optimization and replacement of services of a deployed process (even after dynamic adoptions of the process).

Java, ActiveBPEL, Data structures and algorithms

Verteilte Systeme LU, Good Programming Skills

Not paid

Florian Rosenberg

Open

Area Foundations

Diplomarbeit

Learn advanced topics in Service-oriented computing (SOC), espeically Web services and WS-BPEL, AOP

WS-BPEL is de-facto standard for describing Web service based business processes. A BPEL process is composed of serveral Web services which are included in a rather static way into the process description, thus, it is not possible to exchange or replace a Web service dynamically in a BPEL process. The goal of this thesis is to study and implement methods to allow such a dynamic exchange or replacement of a service in a process with another service. As a first step, aspect-oriented programming (AOP) should be studied for their usefulness to solve this problem.

Java, Web Services, ActiveBPEL, AspectJ

Verteilte Systeme LU, Good Programming Skills

Not paid

Florian Rosenberg

In Progress

Area Foundations

Praktikum, Bakkalaureatsarbeit

Use of EMF dataobjects in JAXB annotated web service interfaces

http://www.jboss.org/community/docs/DOC-10076

JAX-WS, JAXB, EMF

Ta'id Holmes

Open

Praktikum, Bakkalaureatsarbeit

Create a Facebook Application that integrates Human Provided Services (HPS)

The goal of the Praktikum (Bakkalaureatsarbeit) is to build a Facebook Application that allows facebook users to publish "Human Provided Services" (HPS) on their Facebook Web page. HPS are the complementary to existing Web services: instead of adapting humans to Web service interfaces, HPS adapt Web service interfaces to human capabilities. In other words: HPS let humans define Web service interfaces to integrate human activities into BPEL workflows, etc. Social platforms like Facebook link people to network structures. The work to be done is to combine these two aspects with (1) a facebook application that is able to interact as a Web service and (2) the GUI to manipulate/create arbitrary human provided (Web) services (Praktikum). For a Bakkalaureatsarbeit, (1) (Web) service discovery based on crawling a user's network and (2) event notification by HPS to the user's network is also required.

Facebook API, Java, WSDL tools

Not paid

Daniel Schall, Martin Treiber

In Progress?

Human Provided Services, Social Computing

Praktikum

Extend the Genesis Framework with a SOAF meta data plugin

The goal of the Praktikum is to extend the Genesis Framework with a plugin that allows to provide SOAF meta information of Web services that are deployed in a Genesis Testbed. Each service in the testbed must provide a hook to access SOAF meta information using an URL parameter (e.g., using http://localhost:8080/MyService?soaf). Alternatively, a dedicated Web Service method (e.g., getSOAF) can be defined that returns the associated SOAF meta information. In addition, the plugin must provide basic management capabilities for the update of SOAF related Web service meta information.

Genesis, Java, XML tools, JAX-WS

Not paid

Lukasz Juszczyk, Martin Treiber

Open

Service Simulation, Service Meta Data, Service of a Friend

Praktikum

Extend the Genesis Framework with a Human Service Simulation plugin

The goal of the Praktikum is to create a Genesis Web service plugin that mimics human behavior. In order to create the plugin, a human behavior model is required that defines critical constraints such as availability, throughput, reliability, execution time, etc. for each human behavior plugin. When applied to a Genesis Web service, the plugin "humanizes" the service in the sense that the service behaves similar to a human. For instance, the service is only available during office hours, the service might handle only one request per time and put the other requests into a queue, some requests might be "lost" from the queue, etc.

Genesis, Java, XML tools, JAX-WS

Java Programming, Creativity

Not paid - Sorry, we don't have money for this

Lukasz Juszczyk, Daniel Schall, Martin Treiber

Open

Service Simulation, Social Services

Praktikum, Bakkalaureatsarbeit

Create a SOAF network crawler

he goal of the Praktikum/Bakkalaureatsarbeit is to implement a SOAF crawler that indexes SOAF network content and stores it in a relational database (e.g., mysql) for the purpose of being able to search the network efficiently. An important part of the Praktikum/Bakkalaureatsarbeit consists of the empirical proof of the crawler capabilites: it is necessary to create a test environment with 10000s of interlinked SOAF pages that the crawler indexes. For this purpose, DBLP testdata (a word of warning: the extracted file is about 900 MB in size) is available to generate a network structure which must be transformed into the SOAF format. In addition, a dummy set of service descriptions is available and needs to be integrated into the resulting SOAF network structure as well.

Java, XML/RDF tools, MySQL

Java network programming, XML data manipulation in java (XPath, etc.)

Not paid

Martin Treiber

Open

Web Services, Social Computing

Praktikum, Diplomarbeit

In the context of the FFG Project Infinica we offer a number of industrial Praktika/Master/Diploma Theses in the area of XForms, XSL-FO, and Business Processes. See: http://www.infosys.tuwien.ac.at/Staff/zdun/teaching/Infinica_DAs.pdf and/or contact Uwe Zdun for details.

€ 300

Uwe Zdun

Open

Praktikum

VRESCo is a prototypical SOA runtime environment developed in C#, which supports dynamically registering, discovering and invoking Web services. All core features of VRESCo are provided over Web service interfaces, to allow for interoperability with clients written in other programming languages, such as Java. For C# a comfortable client library is provided. For Java this is still missing.

In this practical work the existing C# client library should be ported to a functionally equivalent Java pendant. Some existing preliminary work exists, which can be built upon. The work needs to include unit tests using JUnit to demonstrate that the core features of the client library have been sucessfully ported.

Technically, the main challenge of this topic is the port of the querying interface, since the current solution is strongly tied to the WCF services platform. Here a workaround solution for deserializing search results needs to be found.

The topic asks for solid skills in Java, and optimally some experience with Java XML binding (e.g., JAXB). Interest in C#/.NET/WCF is a plus.

This Praktikum is done in cooperation with Mercatis. Interested students should apply until January 10th, 2010. For more information see the job description.

JAXB, C#, WCF

Good Java skills, experience with Java XML binding

Paid

Philipp Leitner Anton Michlmayr

Open

Area Foundations, VRESCo

Praktikum, Bakkalaureatsarbeit, Diplomarbeit

Develop a tool for a modeling approach for Services-Oriented Integration for Process-Driven SOA with UML2. The modeling approach is given, but a proper visualization must be found.

In the project, the student(s) should implement a modeling tool for integration of services and processes using the UML2. A UML2 profile and patterns for the Services-Oriented Integration for Process-Driven SOA with UML2 are the basis for this work and are given. Hence, a basic understanding of SOA, processes, programming and patterns is needed. The student should find a proper visualization for the approach, a concept for supporting the appraoch with a tool, and develop a tool that supports the appraoch.

(Any) programming language, eg. Java

Not paid

Uwe Zdun

Open

Vienna Service Infrastructure, Faculty

Praktikum, Bakkalaureatsarbeit

Define an extensible XML Schema or an Ontology for QoS-aware Web services

The Web service stack defines various protocols and technologies which can be used for implementing Web services. What is currently missing in the WS stack is the definition of quality of service (QoS) attributes for Web services.
We have defined a set of QoS attributes, now, they need to be represented in a extensible XML schema or an ontology (with OWL). A comprehensive Java framework should be developed to handle, query and modify the schema and ontology. Furthermore, the framework should allow an interchangeable usage of both representations (schema or ontology) within a Web service implementation. An in-depth analysis and comparison of both approaches should be follow the implementation.

Java, XML Schema, OWL, Jena

Verteilte Systeme LU (which means good programming skills)

Not paid

Florian Rosenberg

Open

Area Foundations

Diplomarbeit

Design and develop Web Services to support the evolution of the IT landscape of a telecommunications company to a Service Oriented Architecture (SOA).

A large telecommunications company has begun researching the restructuring of its extremely heterogeneous service landscape to a SOA paradigm for the utilization of new business process management technologies involving semantic annotation and subsequent ontological reasoning. The integration of legacy applications into this new system requires application-specific wrappers expressed in SOA services based on SOAP/WSDL technologies. Some examples of the legacy applications are SQL schemas, triggers, and associated stored procedures over a variety of commercial and Open Source RDMBS; UNIX scripts (Perl, Python, Bash, KSH, PHP); temporal pattern matching over textual application logs; Microsoft ASP based applications etc. Through the implementation of specific Web Service wrappers for a targeted subset of such legacy applications, the candidate would develop through repeated code factorization a genericised framework for such semi-automatic discovery and translation. The transcribed Web Services will be utilized in national and international research projects, combining semantic annotations with business processes and service composition technologies.

High Level Functional Language (e.g. LISP), XML Schema, UML, Java, SQL RDBMS, Scripting Languages

Not paid

Uwe Zdun

Open

Area Foundations

Diplomarbeit

Services now account for more than half of the U.S. economy. Services Computing, as a new cross discipline, address how to enable IT to help people perform business services more efficiently and effectively. Other application areas such as the Internet of Services will furhter broaden the importance of services in tommorrow's IT landscape.

Not paid

Philipp Leitner, Schahram Dustdar

Open

Area Foundations

Diplomarbeit

Services now account for more than half of the U.S. economy. Services Computing, as a new cross discipline, address how to enable IT to help people perform business services more efficiently and effectively. Other application areas such as the Internet of Services will furhter broaden the importance of services in tommorrow's IT landscape.

Not paid

Philipp Leitner, Schahram Dustdar

Open

Area Foundations

Praktikum, Bakkalaureatsarbeit

(top down<->bottom up, model/database/...-driven)

systems, information, technologies; visualisation of existing projects & technologies

more details during an appointment

Ta'id Holmes

Open

Praktikum, Bakkalaureatsarbeit

Synchronise SVN paths of different repositories. Permit the specification of exclusions (publishing restrictions).

Develop an non-intrusive tool that takes configuration files (policies) and monitors changes to a primary SVN repository and synchronises changes with secondary repositories according to the policies.

WS, SVN

Ta'id Holmes

Open

Diplomarbeit

GUI Design and Implementation for VRESCo

The aim of the research project VRESCo is to provide a runtime for Service-oriented Computing (SOC) that addresses some of the current problems in SOC (e.g., dynamic binding and invocation, service versioning, service metadata, service notifications, QoS-aware service composition, etc.). Instead of using existing registry standards such as UDDI or ebXML, the VRESCo runtime uses its own service metadata model.

The goal of this thesis is to (re-)design and implement a graphical user interface (GUI) for the VRESCo runtime environment. The GUI should be implemented as web application and provide support for visualizing all kind of service information and service metadata. Furthermore, one focus of the thesis is how publishing new services and service mappings can be done in an intuitive manner. Since the scope of VRESCo has been growing in the last years, we prefer students with good knowledge of Web service technology and experience in developing complex GUIs.

We offer you the opportunity to work on your master thesis as part of an (internal) research project and expect that you like to work in teams. If are interested in this thesis, please do not hesitate do contact us:
Philipp Leitner (leitner@infosys.tuwien.ac.at)
Anton Michlmayr (anton@infosys.tuwien.ac.at).

More information on VRESCo (including some papers) can be found at: http://www.infosys.tuwien.ac.at/prototype/VRESCo.

ASP.NET MVC, AJAX, C#, SVN

Experience in GUI Design and Web Services

Not paid

Philipp Leitner Anton Michlmayr

Open

Area Foundations, VRESCo

Diplomarbeit

Design and specification of a language the controls (generates) Web services in an simulation environment

The goal is to create a tool that executes a language that specifies the creation and the modification of a set of Web services in a pre-defined environment. The language must define:

1. the interface of the service
2. modifications of the service interface
3. changes of the QoS behavior
4. the point in time when the service changes

DSLs, Genesis, Java, Eclipse

Not paid

Martin Treiber

Open

Diplomarbeit

Graphical Editor for the Web Service Simulation Language

The goal is to create a eclipse plugin that serves as graphical editor for the Web Service Simulation Language (WSSL). The editor must support the creation and the deployment of WSSL scripts as well as a graphical representation of the deployed Web services.

DSLs, Genesis, Java, Eclipse

Not paid

Martin Treiber

Open

Praktikum, Bakkalaureatsarbeit, Diplomarbeit

Design and develop a light-weight Grid workflow managment tool for the specification, execution and analysis of bioinformatics workflows

Java Development Tools

Not paid

Ivona Brandic

Open

Grid, Grid Workflows

Praktikum, Bakkalaureatsarbeit, Diplomarbeit

Integrate existing meta-negotiation and SLA-based negotiation tool into a workflow management tool and perform large-scale tests with Functional Magnetic Resonance Imaging (fMRI) workflows.

Java Development Tools

Not paid

Ivona Brandic

Open

Grid, Grid Workflows

Praktikum, Bakkalaureatsarbeit, Diplomarbeit

Literature survey about autonomous Grid Computing Systems

Not paid

Ivona Brandic

Open

Grid, Grid Workflows

Praktikum

The COSINE framework deals with sharing contextual data among mobile users and supports a subscribe/notify mechanism for updating clients about changes in XML-based context. In the current state, however, notifications are not propagated in an incremental manner, where only the differences to the last update are sent to the client, but the whole XML document is sent anew. The goal of this Praktikum would be to develop of light-weight approach for detecting changes between XML documents, for extracting patches, and merging these again into XML. There exist several similar solutions (XML Diff), but we need asimple, fast, and light-weight tool which can be applied on mobile devices.

Java ME, kXML, kDOM

Java and XML

Not paid

Lukasz Juszczyk

Open

Context-awareness, mobile computing

Praktikum

VieDAME is a non-intrusive, AOP based framework for extending arbitrary BPEL engines with service interaction monitoring, dynamic-runtime partner service selection based on QoS parameters and service interface mediation.

The interface mediation is handled by so called Transformers. These are components that compensate the interface mismatch between the original service as defined by the process and the replacement service that was chosen during process execution by the VieDAME runtime (e.g. if the original service became unavailable). The Transformers are based on XSLT transformations to adapt the alternative WSDL to the original interface specification. Currently, the user interface for VieDAME- which is based on JBoss Seam - only allows for basic actions in this context (i.e. uploading a predefined XSLT or editing an uploaded WSDL in place).

The goal of your work will be the design and implemenation of an user-friendly, UI integrated component that allows for drag and drop based creation of Transformers and the related XSLT, similar to the functionality found in Netbeans BPEL designer.

XSLT, JBoss Seam

Good Programming Skills

Not paid

tba

Open