This page contains a (chronological) list of the PhD theses (Diss), Diplom theses (DA), Master’s theses (MA), Bachelor’s theses (BA) and individual projects (IP) that I have supervised
PDF versions available on request

2025

The tool-supported introduction of Enterprise Architecture Management, MA, 2025

Further development of an editor for creating scenarios as input for traffic simulation systems, BA, 2025

Improving the execution of co-simulations through a client/server architecture and optimisation of the build process, MA, 2025

Effects of applying dynamic slot management on waiting periods at loading bays, BA, 2025

AI offerings on the web – a structured overview, MA, 2025

Adaptation of a hybrid quantum-inspired genetic algorithm for optimising the capacitated vehicle routing problem, MA, 2025

Predicting staff attendance using the case study of Lufthansa Industry Solutions GmbH & Co. KG, MA, 2025

Optimisation of the Design Process for SuccessFactors Career Pages: A Case Study of 2OrgU GmbH, MA, 2025

Optimisation of a Logistics Process through Image Processing, BA, 2025

Simulation of alternative manufacturing processes to minimise environmental impact and improve efficiency in the production of dyes using Plant Simulation, MA, 2025

Simulation-based comparison of road and rail logistics using Tecnomatix Plant Simulation, BA, 2025

Development of an Android application for control and data acquisition for a surface length velocimeter, BA, 2025

Potential analysis for the use of open-source large language models in software development, MA, 2025

Development and evaluation of a churn prediction model using the customer base of EWE VERTRIEB GmbH as a case study, MA, 2025

Addressing data quality issues in electricity and gas meter data, MA, 2025

Support for the application for and management of study quality funding using Stud.IP, MA, 2025

Development of a robust algorithm for the resource-constrained multi-project scheduling problem, MA, 2025

Traceability of reactive systems using the example of a charging and energy management system in the electrified bus fleet of a local transport company, MA, 2025

Detection and quantification of damage to load components using artificial intelligence, BA, 2025

Artificial Intelligence in Software Development – Generative AI for Optimising Software Documentation, MA, 2025

Comparison of Retrieval-Augmented Generation and Fine-Tuning for an LLM in an in-house chatbot, MA, 2025

Development of a procedural model for integrating generative AI into business processes in SAP system landscapes, MA, 2025

Simulation and optimisation of an automated high-bay warehouse, BA, 2025

Development of a data architecture for data-driven planning of sustainable last-mile logistics in major German cities – using the ‘Green Delivery Analytics (GDA)’ project as an example, MA, 2025

Comparison of operators and parameters in a genetic algorithm for solving an RCPSP, BA, 2025

2024

Evaluation of various methods for traffic sign recognition, BA, 2024

Prediction of heat displacement in power stations using classical (robust) machine learning methods, MA, 2024

Development of a plugin to support complaint management for Stud.IP, BA, 2024

Design and implementation of a tool for analysing the performance of offshore wind turbines, BA, 2024

Conceptualisation and prototyping of a business process management system in a university setting, MA, 2024

Development of a metric for evaluating the validity of maritime scenarios, MA, 2024

Multi-project management – evaluation of different application programmes , BA,2024

Ways to support the onboarding process, using the example of project leaders at BITS (BTC IT Services GmbH), BA, 2024

Design of an SAP-supported workforce planning system in large manufacturing companies, using the Polytec Group’s Lohne plant as an example, BA, 2024

Development of a load carrier management system using the example of a manufacturer of patio roofs, MA, 2024

Design and prototypical implementation of a document processing system, using the case study of report generation at the University of Oldenburg, MA, 2024

Development of an algorithm for efficient storage location allocation using the example of an automated small parts warehouse, MA, 2024

Development of a guide to implementing a data strategy using the case study of a utility company (EWE), MA, 2024

Design and prototypical implementation of a run-time assurance architecture for highly automated systems in the maritime domain, MA, 2024

Development of visualisation software for planning procedures for use in a blended learning environment, MA, 2024

Approaches to robust scheduling in RCPSP, BA, 2024

Visual classification of multi-page documents without OCR, MA, 2024

Performance analysis and optimisation, MA, 2024

Development of an AI-based methodology for the preparation of lecture materials, BA, 2024

Approaches to process optimisation using ChatGPT in goods receipt and processing, based on example processes from RZH Oldenburg, BA, 2024

Artificial Intelligence in Recruitment – Approaches to Process Optimisation, BA, 2024

Development of an AI-supported system for text generation, taking search engine-relevant factors into account, MA, 2024

2023

Forecasting staff utilisation rates based on historical personnel data, MA, 2023

Development of a method for creating web-based forms using the example of study quality funds, MA, 2023

Dynamic benchmark datasets for reactive planning methods, MA, 2023

A process model for 3D simulation models in PlantSimulation, MA, 2023

Design of a web application for planning study quality resources, BA, 2023

Simulation and optimisation of freight transport at Frankfurt Airport in the context of the neutral freight transfer point at CargoCity South, BA, 2023

Simulation and optimisation of freight transport at Frankfurt Airport in the vicinity of the neutral freight transfer point at CargoCity Süd, BA, 2023

Prototype development for the generation of personalised study plans using a Stud.IP plugin, BA, 2023

Development of a CRM system concept for SMEs, BA, 2023

Design of a genetic algorithm for the dynamic machine scheduling problem, MA, 2023

Development of a system for managing exam room bookings for Stud.IP, BA, 2023

Energy demand forecasting in paper production with the support of artificial intelligence, MA, 2023

Interactive Workforce Scheduling – Design and Implementation of an Interactive, Event-Based Workforce Scheduling System, MA, 2023

Design and implementation of an information system for the processing, collection and analysis of energy consumption data, MA, 2023

Development of a Prototype Digital Marketplace for the Resource-Efficient Circular Use of Wood, MA, 2023

Cost estimation through simplified access to historical data, MA, 2023

Data-driven estimation of market values using professional football as an example, MA, 2023

Agent-based management of redispatch requirements for various types of installations in a neighbourhood, MA, 2023

Efficient build management of C programme libraries, BA, 2023

Large-Scale Hyperloop Research Infrastructure Location Selection Process: Methodology, Objectives and Scope, BA,2023

Robust staff deployment planning in the RCPSP, BA, 2023

Data mining to improve the planning and coordination of material deliveries in automotive manufacturing, MA, 2023

AI and machine learning-supported ticket routing for the ITSM tool Omnitracker, MA,2023

2022

Design of an application for generating service plans and its prototypical implementation, BA, 2022

Visualisation of a Simulated Annealing Algorithm for Teaching, BA, 2022

Simulation of maintenance services at wind farms, BA, 2022

Data-stream-based control of low-voltage systems for regulating peak loads, BA, 2022

Design and implementation of a Jira plug-in for integrated user and project management in software projects and project groups, BA, 2022

Odysseus CLI, BA, 2022

Development of a tool for the automated generation of user documentation, BA, 2022

Development of a computer vision-based quality control system for detecting irregularities in cable banding, BA, 2022

Artificial Intelligence in Logistics: Areas of Application and Development Potential, MA, 2022

Job shop scheduling taking energy consumption into account, BA, 2022

Feature adaptation of workflows for mobile devices using the example of maritime investigation activities at sea, MA, 2022

Risk management in agile project management using Scrum as an example, BA, 2022

Development of Predictive and Reactive Solution Approaches for the MRCPSP Based on Metaheuristics, MA, 2022

AI services for SMEs, BA, 2022

Design, implementation and evaluation of a system for the compact storage and high-performance analysis of data from wind turbines, MA, 2022

Pest detection in crop production – A decision-support tool for system selection, BA, 2022

Comparison of various deep reinforcement learning agents using the video game ‘Snake’ as an example, BA, 2022

Design and implementation of a method for the multiple detection of QR codes and objects within a warehouse system, BA, 2022

Development of a data warehouse to support the predictive maintenance of offshore wind turbines, MA, 2022

Optimised Solution to Resource-Constrained Project Scheduling Problems, BA, 2022

Design and implementation of an automated production planning system in logistics using VIEROL AG as a case study, BA, 2022

Conducting a feasibility study on Hyperloop based on current European research data, MA, 2022

Analysis options for a ticketing system, BA, 2022

Genetic Visualiser – Development of an application to visualise the operation of an evolutionary algorithm, BA, 2022

Optimisation of the parameters of a genetic algorithm to solve a resource-constrained project scheduling problem, MA, 2022

Development of an integrated development environment for Odysseus WebStudio, BA, 2022

Extension of a web application for the management and allocation of study quality funds, BA, 2022

Process optimisation of a small-parts warehouse logistics solution with a specific focus on data quality, using Feike-Präzisionstechnik GmbH as an example, BA, 2022

Scaling of measures to reduce bottlenecks in the electricity grid within the framework of Redispatch 2.0, MA, 2022

Reactive scheduling in slot management, BA, 2022

 

2021

Evaluation and implementation of a Docker-based approach for the fail-safe provision of streaming services using Odysseus, MA, 2021

Machine learning methods for detecting textual fake news, BA, 2021

The emergence and resolution of potential resource conflicts arising from the influence of resource planning on single- and multi-project management, BA, 2021

Design and implementation of an application for recording and simultaneously feeding working hours into Redmine, Troi and Jira, BA, 2021

Interactive visualisation of microservice-based application landscapes, BA, 2021

Design and implementation of a visualisation of the ant colony algorithm for pathfinding, BA, 2021

Decision tree methods on data streams using Odysseus, BA, 2021

Extension of Odysseus to include a master/worker architecture for the distributed execution of queries, BA, 2021

Supporting data management through robotic process automation: the case of public administration in the context of digital administrative services, MA, 2021

Development of planning software for the sustainable and optimised supply of multiple residential units, BA, 2021

Concept and implementation of software to support co-working spaces, BA, 2021

Development of a concept for the electronic processing of the visitor’s tax on the island of Borkum, BA, 2021

Analysis and design of supplier evaluation using the example of Big Dutchman International GmbH, MA, 2021

Development of software for managing time slots in route planning, BA, 2021

Covorage path planning method for domestic robots, BA, 2021

Dynamic slot management in logistics, MA, 2021

Development of a data warehouse system to support contribution margin accounting in smaller insurance companies, MA, 2021

Lithium in electric mobility – sustainability through the use of ICT, BA, 2021

Degree of Influence of the Mutation Operator in Solving Route Planning Problems, MA, 2021

Development of a Cloud Security Assessment Matrix for the Expansion of a Certified Information Security Management System, MA, 2021

Automated generation of key performance indicators for maritime databases, BA, 2021

A multi-agent system for dynamic slot management, MA, 2021

Master’s thesis: Design and implementation of a visualisation programme for an ant colony algorithm, MA, 2021

Distributed Sensors in a Maritime Context – Prototype Implementation and Selection of a Software Architecture for Berthing Assistance Systems, BA, 2021

Reactive simulation of a virtual power plant taking energy storage systems and consumers into account, BA, 2021

Visualisation of simple artificial neural networks for teaching, incorporating the Hebb and Delta-Lern rules, BA, 2021

Development of an augmented reality application for tracking and creating markers for educational purposes, BA, 2021

Implementation of the Fast Flower Delivery scenario for the DSMS Odysseus, BA, 2021

Scheduling of ticket inspectors as a constraint satisfaction problem, MA, 2021

Simulation and analysis of time slot management in road freight transport, MA, 2021

Selection of suitable data infrastructures using methods from decision theory, BA, 2021

Text mining of navigation warnings from the Navtex system, BA, 2021

Autonomous drone patrol system, BA, 2021

Extraction of vessel information from camera data to enrich AIS data, BA, 2021

Development of a web application for the centralised management and monitoring of Odysseus servers, BA, 2021

 

2020

Reactive planning with deep reinforcement learning, MA, 2020

The ‘Sustainability’ Unique Selling Point in the Context of Marketing Conventional Smartphones Compared to the Fairphone, MA, 2020

Investigation of the influence of variations in mutation type and rate in a genetic algorithm on the solution of a job-shop problem, BA, 2020

Development of a component for visualising planning processes for job-shop scheduling problems in the PlantSimulation simulation environment, BA, 2020

Comparison of methods for reducing peak loads in injection moulding production, BA, 2020

Industry 4.0 technologies, BA, 2020

Opinion mining using the Odysseus data stream management system, MA, 2020

A language-driven development framework for simulation components to generate simulated environments, PhD thesis, 2020

Development of augmented reality software for drones, BA, 2020

Learning in Simulation, Applying in Reality: Reinforcement Learning as a Control Algorithm for Autonomous Flight, MA, 2020

Selection and implementation of tools for static code analysis within the context of software quality assurance, MA, 2020

Reactive simulation of a virtual power plant taking energy storage systems and consumers into account, BA, 2020

Design and implementation of an application for recording and simultaneously feeding working hours into Redmine, Troi and Jira, BA, 2020

Concept and implementation of software to support co-working spaces, BA, 2020

Selection of suitable data infrastructures using methods from decision theory, BA, 2020

Development of a cloud security assessment matrix for the extension of a certified information security management system, MA, 2020

Development of an algorithm for forming teams of equal strength, BA, 2022

Development of a system to support curriculum planning at the DfI, BA, 2020

Machine learning in Security Information and Event Management (SIEM) for anomaly detection, MA, 2020

Visualisation of problem-solving within an artificial neural network, MA, 2020

Analysis of the problem space for reactive scheduling using the example of a logistics company, BA, 2020

Dynamic adjustment of constraints in reactive scheduling, MA, 2020

Development of an app-based assistant for study counselling for students in the School of Computing Science, BA, 2020

Design of a planning system for the self-sufficient, sustainable energy supply of several residential units, BA, 2020

2019

Algorithms for optimising production processes in injection moulding companies with a focus on smoothing the energy consumption curve, BA, 2019

Data cleansing for the optimisation and automation of the reporting process for service level agreements, BA, 2019

Simulation of retail branch deliveries using electric vehicles, BA, 2019

Design and development of a cloud monitoring solution in a serverless application model, MA, 2019

Visualisation of the approach taken by a constraint solver to solve job-shop scheduling problems, MA, 2019

Impact of the introduction of a digital assistant on businesses, using Robot Process Automation as an example, BA, 2019

Comparison of rule-based and machine learning-supported methods for sentiment analysis, BA, 2019

Supporting internal IT service management processes using the Omnitracker tool, BA, 2019

Self-supervised learning in the field of staff resource planning, BA, 2019

Development of a method and associated criteria for selecting sports images on a social network, BA, 2019

A comparative analysis of continuous delivery processes in on-premises and cloud environments, MA, 2019

High-performance monitoring of semi-automated business processes based on a shared data repository, MA, 2019

Development of an architecture for investigating scalable, reactive multi-agent systems, MA, 2019

Simulation of a virtual power plant using PlantSimulation, BA, 2019

Simulation-based evaluation of energy management in autonomous vehicles using the example of the Altenwerder container terminal in Hamburg, BA, 2019

Reactive scheduling in virtual power plants, taking energy storage into account, MA, 2019

Development of an application for visualising evolutionary algorithms in teaching modules, using the job shop scheduling problem as an example, MA, 2019

Design of an intelligent monitoring system for technical and management data, MA, 2019

Optimisation of the method for locating storage spaces within a mobile racking system, BA, 2019

Development of an integrated concept for prioritising data streams and data elements in data stream management systems, MA, 2019

A Conceptual Framework for Mobile Security Supporting Enterprises in Adopting Mobility, PhD thesis, 2019

Development of a Concept for Modelling Networked Harvesting Machinery and Implementation of a Simulation and Test Environment with Integrated Monitoring, MA, 2019

Development of an Agile Process Model for the Establishment and Operation of an Information Security Management System, MA, 2019

Digitalisation of the consulting business process at EWE Tel GmbH, BA, 2019

Project management tools for medium-sized projects, BA, 2019

IT architecture development for BI in the cloud, PhD thesis, 2019

Consistency checking in requirements management using text mining, MA, 2019

Design and implementation of an expert system to assist in the creation of use cases in accordance with IEC 62559, MA, 2019

Multi-formalism at Different Levels of Abstraction for Requirements Engineering and Architectural Design of Real-Time Embedded Systems, PhD thesis, 2019

Energy-efficient battery deployment planning in closed transport systems with battery swaps, PhD thesis, 2016

Optimised distribution and display of information based on tasks and roles in control centres, MA, 2019

Evaluation of DevOps as an alternative to the existing operational organisational structure of an IT service provider to meet new requirements for IT production and operations, BA, 2019

Development of a methodology for calculating the economic benefits of autonomous shipping compared to conventional shipping, BA, 2019

Analysis and simulation of a paint finishing process using the example of Brüggen Fahrzeugbau- und Service GmbH, BA, 2019

Analysis and comparison of various billing and scalability algorithms in a cloud BI system, DA, 2019

Data stream processing on the graphics card, MA, 2019

Precise and autonomous landing of a quadcopter on an ARUCO marker, BA, 2019

The impact of legal regulations on requirements management in the development of software solutions in the energy sector, MA, 2019

Optimisation of fibre-optic network expansion using an evolutionary algorithm, BA, 2019

2018

Nonlinear Model Predictive Control for Trajectory Tracking and Collision Avoidance of Surface Vessels, PhD thesis, 2018

Portfolio optimisation through risk diversification, BA, 2018

Design and implementation of a causal model for mode of transport decision-making, MA, 2018

Automated project controlling in project management using Jira, BA, 2018

Design and Implementation of a Multi-Agent Environment for Planning Problems, MA, 2018

Development of a Concept for the Use of Client Management Systems in Small and Medium-sized Enterprises, DA, 2018

DevOps and SCRUM in business application scenarios, BA, 2018

Reactive scheduling with FlexGantt, BA, 2018

Data cleansing for data streams, MA, 2018

Comparison and evaluation of freeware emissions calculators for heavy goods vehicles to produce a guide, BA, 2018

Design and implementation of a visualisation solution for agile software project management, BA, 2018

Production scheduling taking into account upper and lower limits on energy consumption, BA, 2018

Waste reduction in the food retail sector using mathematical optimisation and simulation-based evaluation, PhD thesis, 2018

Portfolio optimisation through risk diversification, BA, 2018

Design and implementation of a multi-agent system to simulate the spread of car-sharing in Germany, MA, 2018

Data security when using offline data in business applications on iOS devices, MA, 2018

Reactive scheduling with FlexGantt, BA, 2018

Data mining and decision support in the context of online marketplaces for car parts, MA, 2018

Approaches to processing digital signals in data streams using Odysseus, MA, 2018

Ambient Light Displays for Temporal Information, PhD thesis, 2018

Analysis and Development of a System for Controlling Flexibility Demand Using the BTC | AMM as an Example, MA, 2018

Deep Learning of Virtual Marine Sensors, PhD thesis, 2018

Applicability of BPMN for modelling processes and identifying risks in home ventilation, MA, 2018

Development of a Process for the Efficient Integration of Project Management Application Software Based on the CIP, BA, 2018

Development of a multi-agent-based, reactive planning system, BA, 2018

Methods and Approaches in Robust and Reactive Scheduling, BA, 2018

Decision Evaluation System – Towards Sustainable Decision-Making, PhD thesis, 2018

Design and implementation of a system component for the evaluation of plans, BA, 2018

Conceptualisation and development of a planning system for a virtual power plant, BA, 2018

Analysis of the Impact of Blockchain Technology on Innovation in the Energy Sector, MA, 2018

Digital Transformation: Trends and Concepts in Digital Organisations – An Organisationally and Technologically Oriented Case Study and Concept, MA, 2018

Process optimisation through the introduction of document scanning and automated processing at AOK Lower Saxony, BA, 2018

2017

Recommendations for optimising the route planning system used at August Brötje Handel KG, BA, 2017

Analysis and implementation of agile project management methods within a medium-sized IT service provider, BA, 2017

Concept for monitoring IT systems and services in the IT Infrastructure department at CEWE Foundation & Co. KG, BA, 2017

Development of a concept for the use of a robo-advisor to support the investment services of a financial institution, BA, 2017

Integration of technology roadmaps into the planning of the enterprise architecture of energy supply companies, PhD thesis, 2017

Simulation-based evaluation of berthing algorithms in maritime container terminals with high vessel traffic, BA, 2014

Development of a simulation model for container ship stowage planning, BA, 2014

Process analysis and optimisation in relation to the corporate mission statement, MA, 2017

Use of the health portal for e-government tasks, MA, 2017

International survey of the state of research on BI in the cloud, BA, 2017

Effort estimation for software projects using neural networks based on project tenders, BA, 2017

Development of a benchmark problem for reactive scheduling, BA, 2017

Visualisation of the execution of a genetic algorithm for a job-shop scheduling problem, BA, 2017

Constraint-based solution to scheduling problems, BA, 2017

Process tracking in online retail using the example of Brille24, BA, 2017

Methods for energy-efficiency-optimised production planning from an industry-specific perspective, BA, 2017

Use of the health terminal for e-government tasks, BA, 2017

Support Vector Regression for Solar Power Prediction, PhD thesis, 2017

Classification of time series using symbolic representations and gaps, MA, 2017

Design and implementation of an IT solution for strategic process control and production optimisation in the assembly process at wind turbine manufacturers, MA, 2017

Analysis of Robotic Process Automation in relation to enterprise architectures, MA, 2017

Collection, storage and processing of input data via a generic form in a digital data capture process, BA, 2017

Comparison of interface concepts for connecting smart metering solutions to ERP systems, MA, 2017

Development of a Systematic Approach to the Categorisation of Mobility Projects in Germany, BA, 2017

Modular online matrix factorisation using sliding time windows in Odysseus, MA, 2017

Design and implementation of an extensible simulation environment for the LEGO EV3 robot, MA, 2017

Dynamic parallelisation in Odysseus, MA, 2017

Real-time calculation of Value-at-Risk for assessing market price risks using Odysseus, MA, 2017

Online content-based filtering in data stream management systems, MA, 2017

Visualisation of an ant colony algorithm for solving job-shop scheduling problems, BA, 2017

Development of an application for visualising iterative optimisation methods in process planning, MA, 2017

Identification of Degrees of Freedom and Interactions in Data Centres, Taking Electrical and Thermal Energy into Account, PhD thesis, 2017

Robust planning to limit energy consumption in injection moulding production, MA, 2017

Decision-making guide for the selection of a cloud-based ERP product for small and medium-sized enterprises, BA, 2017

2016

Visualisation of a genetic algorithm for job-shop scheduling problems, BA, 2016

Analysis and rectification of weaknesses in improvement projects involving IT at Meyer Shipyard, BA, 2016

Digitalisation and its opportunities for maintenance from the perspective of augmented reality, BA, 2016

Investigation of the GC Group’s warehouse management system at G.U.T. partner company Brötje Handel KG, BA, 2016

Design of a key performance indicator system and a guide for evaluating business intelligence cloud solutions, BA, 2016

 

Analysis of graph structures in data streams using Odysseus, MA, 2016

Simulation of energy consumption using Technomatix Plant Simulation and Rockwell Arena Simulation, BA, 2016

Monitoring of intermodal maritime supply chains, MA, 2016

Configurable algorithms for solving scheduling problems in Java, MA, 2016

Analysis and optimisation of a order-picking concept, BA, 2016

Simulation of algorithms for planning in injection moulding production, BA, 2016

Simulation of algorithms for planning in injection moulding production, BA, 2016

Social Media Monitoring Dashboard, BA, 2016

Integration of neural networks into Odysseus, BA, 2016

Generation and evaluation of maritime manoeuvring recommendations for collision avoidance based on agent-based negotiations, MA, 2016

Conceptual Comparison of Apache Flink and Odysseus, BA, 2016

Power load forecasting for a container terminal using artificial neural networks, BA, 2016

MedRec – Development of Cockpits for Training in Differential Diagnosis, PhD thesis, 2016

Development of a distributed reputation system for use in OdysseusNet, BA, 2016

Cryptography in data stream management systems, MA, 2016

Criteria for a nuanced analysis of Industry 4.0 projects, BA, 2016

Plant Simulation for a traffic simulation in rural areas, BA, 2016

Wrist-Worn Light-Based Smart Digital Jewellery, PhD thesis, 2016

Dynamic Coalition Formation in Electricity Markets, PhD thesis, 2016

Evaluation of Simulation States for a Targeted Analysis of High-Risk Systems, PhD thesis, 2016

 

Wind Power Prediction with Machine Learning Ensembles, PhD thesis, 2016

Techniques for Ensuring Consistency in Requirements Management for Software Systems, BA, 2016

The Use of IT Systems in Supply Chain Management, MA, 2016

Development and Implementation of a Concept for Accessing Medical Classification, BA, 2016

Text mining on unstructured medical documents using the example of doctors’ letters, BA, 2016

Development of a load-dependent energy efficiency metric for Data Centres, PhD thesis, 2016

Green Logistics Cockpit for internal and external use, BA, 2016

Model-based planning to support risk assessment in maritime operations, PhD thesis, 2016

IT support for organising the graduation ceremony in the Department of Computing Science, BA, 2016

Implementation of a cloud-based analytical information system using WAIS smart analysis as an example, MA, 2016

Simulation-based verification of sensor data processing systems, PhD thesis, 2016

Supporting Requirements Engineering with Text Mining Techniques, MA, 2016

Analysis and Comparison of Visualisation Techniques for Schedule Planning with a Focus on FlexganttFX and GanttProject, BA, 2016

Simulation-based energy demand forecasting in seaport container terminals, PhD thesis, 2016

Comparison of visualisation techniques to support the requirements management process, BA, 2016

Design and Implementation of Software for the Visualisation of Time- and Capacity-Dependent Schedules, BA, 2016

Comparison of planning strategies using simulation in Plant Simulation, BA, 2016

 

Reactive scheduling in virtual power plants, MA, 2016

 

2015

Development of an innovation management framework for BTC IT Services, followed by recommendations for action, BA, 2015

Cataloguing of IT security requirements in software development for the energy sector and their integration into the software development process, BA, 2015

Standardised security reporting for BTC AG’s anti-virus protection software based on business intelligence technologies, BA, 2015

Development of a multi-agent environment in JADE to solve scheduling problems, MA, 2015

Design and implementation of a global control centre for scheduling, MA, 2015

Energy- and cost-optimised, virtualisation-based load and power management in a data centre network, PhD thesis, 2015

ECOMA – A Stud.IP plugin for registration management and the creation of registration forms, MSc, 2015

Evaluation of multi-criteria production plans for energy-efficient machine utilisation in plastics production, MA, 2015

 

Vertical integration of planning data, BA, 2015

Fractal Factory and Industry 4.0 – A Comparative Analysis, BA, 2015

Conceptual comparison of collision detection and avoidance in the maritime and aeronautical sectors, MA, 2015

Company-specific adaptation of enterprise architecture frameworks, PhD thesis, 2015

Design of a Sustainability Customer Relationship Management System for Sustainable Mobility Providers, PhD thesis, 2015

Production Scheduling using Fuzzy Logic, MA, 2015

Change and Request Management in SAP Environments using SAP Solution Manager, BA, 2015

Business Process Optimisation: A Case Study of the Processing of Downstream Terms and Conditions at CEWE Foundation & Co. KGaA, BA, 2015

Development of a process for implementing event management at BTC IT Services GmbH, BA, 2015

Constraint Handling with Support Vector Decoders in Distributed Optimisation, PhD thesis, 2015

Design and implementation of an algorithm for the efficient visualisation of differences between two HTML documents, BA, 2015

Biometric user authentication on mobile devices using motion sensors, BA, 2015

Realistic simulation of the production process in the packaging industry, BA, 2015

Vertical exchange of planning data based on XML, BA, 2015

Optimisation of the order picking process at a medium-sized retail company, BA, 2015

SharePoint on mobile devices: Development of a responsive web part for SharePoint for resource planning, BA, 2015

Development of a method for determining infrastructure characteristics for the deployment of a workforce management system at network operators, MA, 2015

Risk assessment for the provision of system services from distributed energy generation plants, MA, 2015

Strategic Management for New Technologies, MA, 2015

Co-evolution of Metamodels and Model Transformations, PhD thesis, 2015

Development of a revenue-optimised operating cycle for electricity-driven combined heat and power plants, using the University of Oldenburg CHP plant as a case study, MA, 2015

Model visualisation as a basis for the simulation of intermodal maritime supply chains, BA, 2015

Applications of Artificial Intelligence Technologies in Neurology, BA, 2015

Possibilities for the application of knowledge-based systems in human medicine – survey, presentation and exemplary implementation based on the Department of Neurology, BA, 2015

Design and simulation of strategies for the controlled charging of electric vehicles at seaport container terminals, BA, 2015

Recording of SMCP-based communication on a ship’s bridge, MA, 2015

Auction-based allocation of transport orders to battery-powered, driverless transport vehicles in container terminals, MA, 2015

Algorithms for planning energy consumption using the example of injection moulding, BA, 2015

Investigation of the possibilities for using UML tools to ensure consistency in requirements management, BA, 2015

Dynamic control and reserve power provision in future smart grids, PhD thesis, 2015

 

2014

Comparison of methods for optimising energy consumption in selected industrial sectors, BA, 2014

Development of a tool for evaluating process schedules, BA, 2014

Design and implementation of an application for visualising planning algorithms, BA, 2014

Target/actual comparison through alignment of project plan and version control, BA, 2014

Optimisation of production processes through modelling and simulation, using photobook production as an example, BA, 2014

Optimisation of production processes through modelling and simulation, using photobook production as an example, BA, 2014

Requirements for project management tools and a comparison using the examples of MS Project, Redmine and Blue Ant, BA, 2014

Design and implementation of a domain model for the development of a test management component, BA, 2014

Implementation of a benchmark for reactive planning with evaluation functions, DA, 2014

Optimisation of the University of Oldenburg’s enrolment process using configuration management, BA, 2014

Parameter optimisation of evolutionary algorithms for production-oriented scheduling problems, MA, 2014

Scheduling4Green taking reactive planning aspects into account, BA, 2014

Scheduling4Green taking reactive planning aspects into account, BA, 2014

A Model for Adaptive Applications on the Semantic Web, PhD thesis, 2014

Simulation and optimisation of energy consumption in glass production, BA, 2014

Simulation-based load profile forecasting in production and logistics and the application of smart grid standards for energy management, MA, 2014

Re-engineering of an e-learning management component, BA, 2014

Investigation into the potential for improving the flexibility, performance and scalability of driverless transport systems through the use of decentralised control techniques, PhD thesis, 2014

Development of a concept for the analysis of market-specific data within the context of a customer relationship management system, BA, 2014

Development of a Concept for the Use of Complaint Management as an Early Warning System, BA, 2014

Neuro-Fuzzy-ANP-based Decision Model for ERP System Selection, PhD thesis, 2014

Time-Oriented Visualisations of Enterprise Architectures: Concept for a Consolidation Map, BA, 2014

Development of a tool for the dynamic design of presentation slides, BA, 2014

Development of a reference model for the planning and control of electric transport in the horizontal transport area of a container transhipment port, MA, 2014

A virtualisation concept for Data Centres to increase availability and reduce redundancies, BA, 2014

Map-based site planning, BA, 2014

Planning tasks in supply chain management within the retail sector, BA, 2014

Development of a criteria catalogue for comparing HTML5 frameworks for the development of mobile applications in a business environment, BA, 2014

Development of a criteria catalogue for comparing HTML5 frameworks for the development of mobile applications in a business environment, BA, 2014

Adaptation of an agile process model for multi-project management in business intelligence projects, BA, 2014

A concept for monitoring hybrid clouds, MA, 2014

Development of a prototype for a cloud data warehouse system (CDWHS), BA, 2014

Implementation of an application for visualising classical heuristics and meta-heuristics in scheduling, BA, 2014

Supply Chain Management Requirements for Cloud Computing, BA, 2014

Business Intelligence in the Cloud – Potential Applications of Cloud Computing for Business Intelligence, MA, 2014

Evaluation of the use of BI methods and techniques for managing a data centre in Germany, MA, 2014

Concept for reactive planning with a focus on energy-efficient production, MA, 2014

2013

Design and Implementation of a ‘Green Logistics’ Cockpit for SAP ERP Systems, MA, 2013

Design and implementation of a scheduler for delivery orders in intralogistics systems, MA, 2013

Software support for the evaluation of software architectures using the Architecture Trade-off Analysis Method, DA, 2013

Integration of mobile devices into business applications: the case of travel management, MA, 2014

Anonymisation and pseudonymisation in big data, using a NoSQL database as an example, MA, 2013

EA modelling options for cloud services integration, DA, 2013

Analysis and evaluation of offshore configurations of the port landscape in the German Bight, BA, 2013

Investigation of multi-agent platforms with regard to the integration of holonic approaches, BA, 2013

Implementation of an ITIL Change Management Process with Software System Support: The Case of an E-commerce Company, BA, 2013

Description of a benchmark for reactive planning with evaluation functions, IP, 2013

Requirements of small and medium-sized enterprises for cloud computing, BA, 2013

Smart Objects Data Visualisation and Integration within a Virtual Factory, BA, 2013

Requirements for the architecture of cloud-based software systems, BA, 2013

Design of a Key Performance Indicator System for Comparing the Trustworthiness of Cloud Providers, BA, 2013

IT-supported container management in the food industry, BA, 2013

Process optimisation in condition monitoring through the use of touch technology, MA, 2013

Process optimisation in the supply chain of an automotive manufacturer’s spare parts division, BA, 2013

Intelligent management of electric vehicle fleets via Vehicle-to-Grid (V2G), BA, 2013

Evaluation and Prototype Implementation of a Cloud Service for Storing Multimedia Content, MA, 2013

Simulation-based optimisation of operations at a loading yard, BA, 2013

Security techniques in cloud computing, BA, 2013

Economic benefits of smart charging, IP, 2013

Cloud computing and the operation of Data Centres from a ‘Green IT’ perspective, MA, 2013

Database-supported reporting in an HR department, using Kraft Foods as an example, BA, 2013

Design and implementation of a collaborative knowledge base in the Future Business Clouds project, MA, 2013

Design of a framework for monitoring SLAs, MA, 2013

Increasing the adaptability of a software system – a concept for systematic adaptation to customer-specific requirements, BA, 2013

Modelling of logistics processes, BA, 2013

Modelling of logistics processes, BA, 2013

Collaborative Planning for Decentralised Carrier Networks, PhD thesis, 2013

2012

Autonomous virtual server, DA, 2012

Stakeholder-Oriented Green IT Reporting, MA, 2012

Development of Visualisation Plug-ins for JASON-based Traffic Simulations, MA, 2012

Automatic Model-Driven Analytical Information Systems, PhD thesis, 2012

An Expert System for the Usability Analysis and Optimisation of Web Applications, DA, 2012

A Concept for Generating Reports to Control the Product Development Process based on Metrics, MA, 2012

Design and development of a framework for data selection and configuration from MS Excel for the presentation of EA visualisations, IP, 2012

Conceptualisation and Prototype Implementation of a Reporting System for Materials Management, MA, 2012

Development of a test environment for heuristics in process planning, BA, 2011

Service Operation according to ITIL in other application areas, MA, 2011

Design and creation of e-learning support materials on the topic of ‘IT Service Management’, BA, 2012

Design of a data integration system, BA, 2012

Extension of a monitoring system to include aspects of knowledge management, BA, 2012

Dynamic load profile analysis for production and energy optimisation, MA, 2012

Evaluation of production planning processes using the example of pasta production, BA, 2012

Identifying problems in traditional strategic project management using agile methods through trend analysis, BA, 2012

Simulation of intermodal transport scenarios using Plant Simulation, MA, 2012

Simulation of energy consumption in production using the example of the injection moulding industry, BA, 2012

Automated integration of ticketing and configuration management, BA, 2012

Evaluation of the readiness for and integration of cloud technologies in and for BI solutions, BA, 2012

Costing, planning and operation of a development infrastructure in the cloud, MA, 2012

Software system for visualising green logistics key performance indicators, BA, 2012

Concept for reactive workforce planning, BA, 2012

Evaluation of Manufacturing Execution Systems with regard to reactive process planning, MA, 2012

Development of a project management concept for the introduction of standard CRM software using Microsoft Step 2012 as an example, BA, 2012

Web application for linking digital libraries and online catalogues, BA, 2012

Context-sensitive support for knowledge-intensive business processes, PhD thesis, 2012

Comparison of the functional scope of supply chain management software, BA, 2012

Development of a PHP-based decision-making module using decision table techniques for Oldenburgische Landesbank AG, BA, 2012

Evaluation of UTM firewalls in terms of their functionality, performance and cost-effectiveness, BA, 2012

Design of a process-based IT requirements management system using Business Technology Consulting AG as a case study, BA, 2012

Concept for the virtualisation of the digital production workflow at CEWE COLOR AG & CO. OHG, BA, 2012

Concept for porting an internal service to a cloud service, BA, 2012

Development of a concept for a cloud computing product in the retail sector of the telecommunications industry, BA, 2012

Development of an evaluation methodology for the selection of anti-fraud management software for telecommunications companies, BA, 2012

Prototype implementation and integration of a recommendation system into an e-commerce platform, BA, 2012

Integration of an extensible process and resource planning module into the MICOS konzept software product, BA, 2012

Extension of an event-driven architecture framework for complex event processing, BA, 2012

Integration of Cube Models into a Metadata Management System, BA, 2012

Design of a tool for managing access authorisations to Data Centres, IP, 2012

Concept and implementation of a staff deployment planning system for projects based on qualifications, BA, 2012

Concept and implementation of a staff deployment planning system for projects based on qualifications, BA, 2012

Development of an information portal on IT in green logistics, DA, 2012

Development of a tool for creating and exporting annotated graphs, BA, 2012

Supervised Task Performance of an Autonomous UAV Swarm, DA, 2012

CMMI-compliant design of the ‘Supplier Agreement Management’ process area, taking into account company-specific conditions, BA, 2012

Application of object-oriented refactoring patterns to software modelling, BA, 2012

2011

Use of semantic wikis for project management tasks, BA, 2011

Development and visualisation of a key performance indicator system for infrastructure assessment in the context of electric mobility, BA, 2011

Design and prototyping of a mobility portal, BA, 2011

Intelligent monitoring of virtualised application environments and their underlying virtualisation solutions, DA, 2011

Supply chains in the maritime sector, Master’s thesis, 2011

Dynamic integration of value-added services into e-business systems, MA, 2011

Post-integration data management in data warehouses, taking distributed responsibility into account, PhD thesis, 2011

Analysis of the potential of electric mobility for fleets and their behaviour, BA, 2011

Design and implementation of a framework for event-driven processing of sensor data, DA, 2011

Mobile Phones: Opportunities and Barriers for the Older Generation. A Study of the User-Friendliness of Mobile Phones from the Perspective of Older People, MA, 2011

Design and implementation of a web application for event-based, reactive workflow planning, BA, 2011

Development of logistical key performance indicators for controlling in a multi-site environment, MA, 2011

Development of an intermodal route planner, DA, 2011

Analysis and extension of a TCO differential cost model for economic feasibility assessments in the field of electric mobility, BA, 2011

Design and implementation of a monitoring system for food production, using the example of laying hen farming, DA, 2011

Key performance indicators for green logistics, BA, 2011

Design of a modelling environment for business processes, information and material flows for logistics controlling, DA, 2011

Design and implementation of a settings server for cross-vendor provisioning of VoIP terminals, IP, 2011

Evaluation of trouble ticket system software to support incident management and problem management processes, IP, 2011

Evaluation and improvement of the risk management process within IT projects at the EWE Group, IP, 2011

Design of a holistic IT controlling framework for service relationships within the EWE Group’s IT environment, IP, 2011

Display of information from point-of-sale and merchandise management systems on mobile front-ends, IP, 2011

Development of a methodological process model for the introduction of SEPA in SAP, using CEWE COLOR AG & Co. OHG as a case study, IP, 2011

Online product marketing using the example of BTC BONAPART, IP, 2011

2010

Swarm intelligence for solving reactive scheduling problems, DA, 2010

A multi-agent system for reactive scheduling problems, DA, 2010

Modelling a digital factory to simulate a company’s internal logistics processes, BA, 2010

Strategic Business Planning in a Data Warehouse Environment Supported by a Knowledge Management System, PhD thesis, 2010

Implementation of a data model for integrated logistics controlling, DA, 2010

Development of a software system for load optimisation, DA, 2010

Green logistics – trends and the use of information technology, DA, 2010

Development of a concept and prototypical implementation of a tool to support the validation of a cognitive model based on video data, IP, 2010

Engineering Coordination – A Methodology for the Coordination of Planning Systems, PhD thesis, 2010

Identification and Resolution of Duplicates in SAP Datasets: The Case of a Newspaper Publisher, IP, 2010

Virtualised storage concepts in the solution portfolio of a medium-sized outsourcing provider, IP, 2010

Jurij Luft, Interface migration to SAP PI, IP, 2010

Marc Wiesner, Design and Comparison of Virtual Client Architectures: The Case of an Energy Supply Company, IP, 2010

Business case for a Green IT product portfolio in a multi-service company, IP, 2010

CO₂ calculation across the product life cycle, IP, 2010

Berth and container crane deployment planning for Virtual Port, IP, 2010

2009

Visualisation of the integrated model for logistics controlling, IP, 2009

Development of a web portal for connecting digital libraries, DA, 2009

An information system for advising on sports medicine services, DA, 2009

Modelling of complex intermodal maritime supply chains, IP, 2009

Load monitoring and migration of virtual machines for optimal capacity planning in server environments, DA, 2009

Selection and evaluation of a content management system for document creation and management within the training department of the Special Vehicles product division at Daimler AG in Wörth, DA, 2009

Aspects of Green IT in software development, DA, 2009

Event-driven integration of the RedDot LiveServer with a search engine framework using Lucene as an example, IP, 2009

Evaluation of the suitability of SAP Best Practices for Business Intelligence in accounts receivable management for CeWe Color, IP, 2009

Analysis of costs in Data Centres, using the University of Oldenburg’s Data Centre as an example, DA, 2009

Development of an IT balanced scorecard for university data centres, DA, 2009

Assessment of the use of client management solutions for Windows environments in small and medium-sized enterprises, IP, 2009

Visualisation of the integrated model for logistics controlling, IP, 2009

Applications of Multi-Agent Simulation Technology in Project Management, DA, 2009

Heuristic staff deployment planning in the care sector, DA, 2009

Development of a process model for documenting legacy systems, DA, 2009

Staff deployment planning as a constraint satisfaction problem, DA, 2009

Time-based planning for storage location allocation in warehouse management, DA, 2009

2008

Digital rights management for university learning platforms: the case of Stud.IP, DA, 2008

Concept for the evaluation and allocation of costs for services within a SAN in a Data Centre, DA, 2008

Design and implementation of an information system for knowledge and workflow management in graphite production, IP, 2008

Groupware support for university working groups, IP, 2008

Semantic modelling of web services for the textile industry, IP, 2008

Coordination of transport planning systems, IP, 2008

Design and implementation of a plugin for StudIP to integrate the Oldenburg Regional Library and Information System via SRU, IP, 2008

Evaluation of process flowcharts, IP, 2008

Development of a data model for integrated logistics controlling, IP, 2008

An ontology for intelligent workflow planning, DA, 2008

Integrated fleet management based on SAP systems, IP, 2008

Implementation of a UDDI directory, IP, 2008

Fuzzy Reactive Scheduling, DA, 2008

Development of a system for optimising energy efficiency in the plastic injection moulding industry, DA, 2008

Development of an application to optimise keyword advertising, DA, 2008

Project management support for project groups on the Computer Science degree programme at the University of Oldenburg, DA, 2008

Reactive transport planning based on tracking and tracing data, DA, 2008

2007

Handling of duplicate appointments in the Open-Xchange groupware, IP, 2007

Optimisation of the IDOC processing workflow for cross-company-code transactions, IP, 2007

Supportive decision-making framework during the server consolidation process, IP, 2007

Implementation of public Wi-Fi hotspots (Public Wi-Fi), IP, 2007

"Synchronisation of bookmarks with the Open-Xchange groupware system", IP, 2007

"Development of a GUI framework for the field of process planning based on Java Swing", DA, 2007

"Development of a simulation model to analyse the logistical processes of a container terminal", IP, 2007

"Development of a reference model for port software", IP, 2007

"Web-based metaheuristics for local scheduling problems", DA, 2007

"Fuzzy scheduling algorithms as a web service", DA, 2007

"Secure Authentication in WLAN", IP, 2007

"Heuristic solution to scheduling problems adapted for use in e-learning", IP, 2007

"openVMS – Design and Implementation of Software to Support the Creation of Substitute Teacher Schedules in Schools", IP, 2007

"Information Systems for Mobile Phone Masts in East Frisia and the Surrounding Area", IP, 2007

"Integration of MetaLib X-Services into a portal system", IP, 2007

"Online forms for webspace registration at the University of Oldenburg", IP, 2007

"Automated monitoring on distributed systems", IP, 2007

"Synchronisation of bookmarks with the Open-Xchange groupware system", IP, 2007

"Design and Implementation of a System for the Semantic Analysis of Data in the STEP PDM Schema", Diplom thesis, 2007

"Design and implementation of a system for the semantic collection, linking and evaluation of project data", Diplom thesis, 2007

2006

"Development of a process model for evaluating a dealer management system in the automotive industry – illustrated using the example of SAP Dealer Business Management", Diplom thesis, 2006

"Further Development and Re-engineering of a System for Course Planning", Diplom thesis, 2006

"A security concept for the university computer centre for application to the network infrastructure of the University of Oldenburg", Diplom thesis, 2006

"Determination and analysis of indirect IT costs at TÜV NORD Mobilität GmbH & Co. KG based on a heterogeneous IT infrastructure", IP, 2006

"Computer-aided graphical analysis options within the framework of external performance and financial analysis", IP, 2006

"Implementation of a system to support the IBIT helpdesk at the University of Oldenburg", IP, 2006

"Development of web-based configuration management software with integration into SAP R/3", IP, 2006

"Design and implementation of an operational concept management system", IP, 2006

"Swarm Intelligence as a Strategy for Solving Reactive Planning Problems in Value Chains", PhD thesis, 2006

"Service Management Solutions for SMEs", Diplom thesis, 2006

"Enterprise Application Integration: Application to Application – Development of an EAI framework for the integration of business applications at Bernard Matthews Oldenburg", Diplom thesis, 2006

"Detection of Attacks on a Network at Layer 2, IP, 2006

"Configuration Management Tool for the HRZ", IP, 2006

"Automatic Processing of Online Forms and Form Content", IP, 2006

1990–2005

"A GUI framework for planning systems", IP, 2005

"Implementation and evaluation of optimisation methods using the example of the allocation of introductory seminar topics", Diplom thesis, 2005

"Cooperative Planning in the Context of Transport Planning", Diplom thesis, 2005

"Transport planning as a dynamic optimisation problem", Diplom thesis, 2005

"Attack Detection and Analysis in Networks using SNORT", IP, 2005

"Secure Transmission of Personal Data via VPN", IP, 2005

"Secure Web Servers – Setting up a Web Server Infrastructure for the HRZ at the University of Oldenburg", IP, 2005

"Mapping Identity Management Processes Using an Open-Source Workflow Engine", IP, 2005

"Optimisation of Resource Utilisation in Cardiology", Diplom thesis, 2004

"Agent-based Coordination of Planning Systems", Diplom thesis, 2004

"Planning and Simulation Environment", Diplom thesis, 2004

"Aspects of virtual courses from a didactic perspective", Diplom thesis, 2004

"Identity Management based on SUN JES", IP, 2004

"Aspects of Secure Web Services in a University Environment", IP, 2004

"Monitoring of Services on Distributed Systems", IP, 2004

"Production Planning in a Concrete Plant", IP, 2004

"Supply Chain Collaboration for Logistics Service Providers", IP, 2004

"Active Break", IP (co-operation with the university sports department), 2003

"Scheduler in Java 2 Micro Edition", IP, 2003

"Supply Chain Scheduling with Teams of Agents", Diplom thesis, 2002.

"A User Interface for the Interactive Transport Planning Process", diplom thesis, 2002

"Comparison of Algorithms for Global Scheduling", undergraduate project, 2002

"Transport Planning as a Scheduling Problem", undergraduate project, 2002

"A Framework for Planning Agents", Diplom thesis, 2001.

"A User Interface for Integrated Interactive Scheduling Systems in the PPS Sector", Diplom thesis, 2000.

"Comparison of Planning Methods for a Production Planning Problem in Pasta Production", undergraduate project, 1999

"Communication Requirements, Models and Architectures for UI/Scheduler Interaction", Diplom thesis, 1998.

"A Generic Sequence Planning System Based on Constraints", Diplom thesis, 1998.

"Mobility Aspects in Scheduling Systems", Diplom thesis, 1998.

“A Blackboard Architecture for Communication between Global and Local Scheduling Components”, undergraduate project, 1996.

"Public Domain Software and Benchmarks for Scheduling Problems", undergraduate project, 1997

"Route Planning Using Neural Networks", Diplom thesis, 1996.

"Iterative Improvement of Schedules", Diplom thesis, 1996.

"Forecasting Techniques – An Overview", undergraduate project, 1996

"Fuzzy Methods and Neural Networks for Solving Scheduling Problems", undergraduate project, 1996

"Relaxation of Constraints in Scheduling", Diplom thesis, 1996.

"Fuzzy-Based Scheduling", Diplom thesis, 1996.

"Global Control Centre", Diplom thesis, 1995.

"Reactive Scheduling", Diplom thesis, 1992.

"Integration of Production Data Acquisition and Planning Systems to Improve Production Control", Diplom thesis, 1992.

"Systems for Temporal Closure", Diplom thesis, 1992.

"Knowledge-Based Production Planning", Diplom thesis, 1990.