The 10 most recently published documents
Promotionsordnung des Fachbereichs 2:
Philologie / Kulturwissenschaften der Universität Koblenz
Promotionsordnung des Fachbereichs 3:
Mathematik / Naturwissenschaften der Universität Koblenz
Promotionsordnung des Fachbereichs 4:
Informatik der Universität Koblenz
Ordnung für die Eignungsprüfung Musik der Universität Koblenz
Promotionsordnung des Fachbereichs 1:
Bildungswissenschaften der Universität Koblenz
This study investigated the acquisition of skills by future maths teachers in Rhineland-Palatinate during
their final internship phase before entering the so-called `Vorbereitungsdienst´, a kind of in-depth in-
ternship/ practical training.
In order to record the students' learning progress, a pre/post-test approach was chosen in which the
participants each analysed five short teaching sequences in an online questionnaire and then answered
questions on mathematical argumentation. So the test reflected a central content of the internship,
the observation and reflection of maths lessons.
All video sequences were focussed on aspects of mathematical argumentation in the classroom. Ma-
thematical reasoning not only describes one of the general competences laid down in the educational
standards and curricula for the subject of mathematics, but also goes beyond the other general com-
petences in terms of its fundamental importance for mathematics lessons.
In the test group, a total of 54 trainees was surveyed at the beginning and at the end of their in-depth
internship in four internship periods in 2022 and 2023. The control group consisted of 28 student tea-
chers of mathematics, who were also surveyed twice at 3-week intervals without completing a school
placement in the meantime.
The collected data sets, which essentially consist of free text responses, were analysed using the qua-
litative content analysis method. In addition, the interpretative uncertainty that arises here was mini-
mised through backward testing. In this way, the quantity and quality of the video analysis as well as
the knowledge and understanding of mathematical argumentation could be determined and com-
pared for each respondent in both tests.
As a result, the study confirms previous findings regarding the perception of teaching by experts and
novices and also the fundamental increase in knowledge through practical phases. In addition the
study shows that both quantitative and qualitative response behaviour improved after the practical
training and the test participants were able to identify aspects of argumentation in the lesson excerpts
and justify their importance for good mathematics teaching. This was more successful in teaching si-
tuations that are not very dynamic than in teaching situations that are very dynamic, such as those
arising from conversational situations. In addition, a deeper understanding of the competence `ma-
thematical argumentation´ could be demonstrated after the internship and it could be seen that the
didactic knowledge and the ability to analyse videos correlate more strongly with each other in the
post-test than in the pre-test.
The effects described were only evident in the test group, but not in the control group without the
work placement.
Positron Emission Tomography (PET) is becoming more and more important in clinical routine
applications. One of the major limitations is the sensitivity to patient motion especially in the thorax
to periodic respiratory movement. Another open point of discussion is the method how to define the
tumor volume, especially when the precise knowledge of the tumor borders is important as in
radiation treatment planning. Therefore, in this work these two topics to improve quantification in
PET imaging have been addressed. First a new motion correction algorithm was implemented using
image deblurring including movement information of a 4D Computed Tomography (CT). This method,
which has the advantage of not increasing the PET acquisition time as other motion correction
techniques, was applied to phantom and patient data and showed promising result in improvement of lesion quantification. In phantom studies an improvement of up to 49% in lesion volume and in
patient studies of up to 33.3% could be demonstrated.
In the second part of this work, a new segmentation method based on textural parameters was
implemented and validated as well in phantom and patient data. In the latter a validation with
histopathological data was performed showing a very good performance of the new algorithms,
especially in larger lesions. Best result could be shown in phantom data and patient data for the
segmentation algorithm based in the local entropy.
In summary, two algorithms were implemented and validated which can improve quantification of
PET imaging furthermore
Seit mehr als 10 Jahren forscht und lehrt das Team des Centers for Enterprise Research (CEIR) an der Universität Koblenz im Bereich der digitalen Unterstützung kollaborativer Arbeit in Unternehmen (Enterprise Collaboration) und untersucht den Aufbau und die Nutzung von Kollaborationstechnologie für den Digitalen Arbeitsplatz.
Der vorliegende CEIR Report mit dem Titel „Collaborative Actions on Documents Ontology (ColActDOnt)“ beschreibt die Entwicklung einer Ontologie für Benutzeraktionen an Content in Kollaborationssystemen (englisch: Enterprise Collaboration Systems). Die Arbeit an der Ontologie erfolgte im Rahmen eines DFG-Projekts mit dem Titel „Social Process Mining“. In diesem Projekt wurde eine Methode für das sogenannte „Cross-System Process Mining“ entwickelt. Cross-System Process Mining erlaubt die Analyse von Arbeitsprozessen, deren Ablauf von mehreren, heterogenen Kollaborationslösungen (z.B. HCL Connections, Alfresco, Skype) unterstützt werden. Aufgrund der Heterogenität der involvierten Systeme müssen die Logfiles der unterschiedlichen Softwaresysteme zunächst in einen gemeinsamen, harmonisierten Event-Log überführt werden. Die ColActDOnt stellt die notwendige Systematik für diese Harmonisierung zur Verfügung.
Die Ontologie wurde entwickelt in einer Reihe von interaktiven Workshops mit den Projektbeteiligten (Prof. Dr. Petra Schubert, Dr. Florian Schwade, Julian Mosen) unter der Leitung von Martin Just, der die Ergebnisse anschließend im Rahmen seiner Masterarbeit dokumentierte. Anschließend wurden die wichtigsten Teile in gekürzter Form in dem vorliegenden CEIR-Report veröffentlicht.
Mit den CEIR-Reports möchten wir ausgewählte wissenschaftliche Ergebnisse einem breiteren Publikum zur Verfügung stellen. Die in dieser Arbeit dargestellten Informationen sind für Unternehmen interessant, die an einer gezielten (Weiter-)Entwicklung ihrer Enterprise Collaboration Platform interessiert sind.
In recent decades, there has been a growing awareness in our society of the impor-
tance of medicines that are personalized to the needs of patients. This dissertation
contributes to the research on personalized dosage forms with controlled drug release.
The basis of our investigations is the simulation of the expected diffusion properties
of these personalized dosage forms using computer-aided statistical methods and the
subsequent adaptation of suitable models to experimentally obtained data. This
novel approach makes it possible to verify the parameters determined from exper-
imental data, such as the diffusion coefficient. A key finding is that, for instance,
the homogeneity of the sample, the precision of the measurement data collection
and the consideration of the measurement environment have a greater influence on
the validity of the diffusion coefficient than the choice of the diffusion model. The
experimental part of this thesis comprises the development and characterization of
drug-loaded polymer resins, the implant fabrication, and the pharmaceutical and
physical investigation of the polymer-drug implants. The formulation of polymer
resins and their suitability for 3D printing (3DP), as well as their use in pharmaceu-
tical applications, are extensively addressed. The release properties and, in partic-
ular, the polymer network’s mesh size influence on the active ingredient’s diffusion
rate in aqueous solution are studied. In addition, the production of polymer sam-
ples by means of UV photopolymerization in a molding process developed for this
purpose, as well as by using stereolithographic 3DP, are examined comparatively.
The polymerization process and the polymer properties resulting from the different
production methods are presented. The major findings from these studies include
the successful development of a polymer resin formulation whose release and swelling
properties are comprehensively demonstrated using a model drug. Furthermore, the
optimization of this resin for the use of the active pharmaceutical ingredient (API)
testosterone was achieved. A comparison of the two developed resin formulations
clearly shows the limitations and the possibilities of transferability of both systems.
In addition, the results concerning the release of API from the polymer, as well as
the diffusion of the solvent into the polymer and the resulting increase in the volume,
provide insight into the changed interfacial diffusion resistance in 3D printed poly-
mers compared to molded polymers. This work thus contributes to the development
of personalized drug forms and paves the way for the production of release-controlled
polymer resin implants for future follow-up work.
Satzung der Studierendenschaft der Universität Koblenz zur Änderung
von Vorschriften der Studierendenschaft der Universität Koblenz
Fünfundzwanzigste Ordnung zur Änderung der Prüfungsordnung
für die Prüfung im Zwei-Fach-Bachelorstudiengang an der Universität Koblenz
Erste Ordnung zur Änderung der Masterprüfungsordnung für
den weiterbildenden Fernstudiengang „Master of Business Administration“
des Fachbereichs 4: Informatik der Universität Koblenz
Erste Ordnung zur Änderung der Masterprüfungsordnung für
den weiterbildenden Fernstudiengang Energiemanagement
des Fachbereichs 3: Mathematik / Naturwissenschaften der
Universität Koblenz
Prüfungsordnung für den Bachelorstudiengang „Angewandte
Naturwissenschaften“ und den Masterstudiengang „Material
Science“ an der Universität Koblenz (Studiengangs-PO Angewandte
Naturwissenschaften / Material Science)
Prüfungsordnung für das Studienmodell uk-Master an der
Universität Koblenz (Studiengangs-PO uk-Master)
Einschreibeordnung der Universität Koblenz
This thesis tackles a common bottleneck in data-science courses: students struggle
to turn a broad interest into a focused, workable project idea. This thesis set out to
design and evaluate a compact assistant—EduIDEAtor—that makes this first mile
simpler and more intentional. The tool uses a text-first interface with plain inputs,
a small set of clearly different directions, and quick, reversible edits so students can
steer ideas without losing momentum. After building and iterating the web appli-
cation, The thesis evaluated how students experienced it and how it compared with
familiar, non-AI brainstorming. The findings are consistent: navigation and input
clarity were strong; students felt more able to generate and shape ideas; overall sat-
isfaction and willingness to continue using the tool were high. Two practical refine-
ments emerged—make back navigation clearly visible and give users finer control
over how broad or specific the suggestions are both achievable without changing
the core design. The contribution is a concrete pattern for first-mile ideation and a
set of actionable guidelines for course-level adoption.
Globally billions of dollars are invested on information systems and technology (IS/IT) to achieve business change. Understanding how value is generated and captured from these investments has been a key theme in information systems (IS) research for over 25 years. However, despite significant theoretical progress, organisations are still failing to achieve the full value of their investments and identifying and realising the benefits of IS/IT-enabled business change remains a challenge for both research and practice.
Our research is concerned with the business change associated with the introduction and use of new forms of enterprise collaboration system (ECS) that incorporate social software functionality (e.g. social profiles, blogs, wikis, activity streams, collaborative tagging etc). ECS represent a significant business investment; however, there remains uncertainty around the benefits and value arising from the introduction of these new types of ECS. Existing research studies on IS/IT benefits are focused primarily on traditional enterprise systems such as ERP systems. This article summarises the existing work that directly, or indirectly addresses IS benefits, to reveal four broad themes (i) evaluations of IS/IT investments (ii) measuring IS success (iii) classifying and measuring IS benefits and (iv) benefits realisation management.
The article concludes with an overview of the research on benefits management conducted in the Center for Enterpise Information Research at the University of Koblenz and the current research project investigating the benefit of enterprise collaboration systems (BECS).
The BECS project investigates the benefits arising from the adoption and use of Enterprise Collaboration Systems (ECS).
ECS are large-scale collaboration technology infrastructures that provide the software functionality to enable workgroups to organise online team meetings, to create and share information, to coordinate workflows and to collaborate on joint projects, regardless of the location and timing of work activities.
When ECS are introduced into organisations there are initial expectations about what can be gained from the system, e.g. improved collaboration, improved communication across silos, etc. Over time, as users gain experience using the system, ideas about what can be achieved change and the ECS become embedded into organisational work practices. However, identifying and understanding the expected benefits of ECS, how they evolve over time, and how they contribute to organisational performance is challenging due to a lack of suitable methods and tools to describe (profile), measure and monitor ECS benefits.
The BECS project addresses this challenge; the primary focus is on identifying, measuring and monitoring the benefits that arise from ECS implementation and use over time. Through the development of in-depth longitudinal case studies of ECS adoption in leading organisations in the DACH region and empirical analyses of collaboration system use, the research:
i) developed practical tools and methods for the measurement of ECS benefits and benefits profiling;
ii) provides greater insights into how benefits management is experienced and constituted in practice; and
iii) developed a novel and integrated framework that assists researchers and practitioners to coordinate their efforts in developing, implementing and evaluating ECS benefits.
The project delivered both practical and theoretical outcomes. The methods and tools developed in the BECS project have been applied in organisations and delivered useful and useable results enabling organisations to understand and monitor the evolving benefits of their ECS. Following the COVID-19 pandemic, this work became of even greater importance as new uses of ECS emerged when organisations adopted large-scale support for hybrid and remote working initiatives.
The research findings also provide key theoretical concepts and analytical methods, including the MoBeC framework, Social Collaboration Analytics and Benefits Scorecards. These provide the foundation for subse-quent research projects to examine transformation to digital work and the development of a new stream of research into trace analysis and collaboration analytics more broadly.