@article{DobhanOberlaender, author = {Dobhan, Alexander and Oberl{\"a}nder, Michael}, title = {Hybrid contracting within multi-location networks}, series = {International Journal of Production Economics}, volume = {143}, journal = {International Journal of Production Economics}, number = {2}, publisher = {Elsevier}, pages = {612 -- 619}, language = {en} } @incollection{SuckyDobhan, author = {Sucky, Eric and Dobhan, Alexander}, title = {Hybride Planung in Internal Supply Chains}, series = {Dezentrale Koordination {\"o}konomischer Aktivit{\"a}ten}, booktitle = {Dezentrale Koordination {\"o}konomischer Aktivit{\"a}ten}, editor = {Corsten, Hans}, pages = {205 -- 238}, language = {de} } @inproceedings{BalzertDobhan, author = {Balzert, Elena and Dobhan, Alexander}, title = {Protokolle der Application Layer im industriellen Internet der Dinge}, series = {Mobility in a Globalised World 2020}, volume = {25}, booktitle = {Mobility in a Globalised World 2020}, editor = {Sucky, Eric and Biethahn, Niels and Werner, Jan}, publisher = {University of Bamberg Press}, address = {Bamberg}, isbn = {978-3-86309-793-6}, doi = {10.20378/irb-58414}, pages = {79 -- 114}, abstract = {Die zentrale Idee des Internet of Things (IoT) ist die digitale Vernetzung und der damit einhergehende Informationsfluss zwischen unterschiedlichen Objekten. Der Informationsaustausch wird mit Hilfe von entsprechenden Protokollen realisiert. Ziel der Untersuchung ist eine Analyse des betrieblichen Entscheidungsprozesses zur Protokollauswahl auf der Application Layer sowie die Identifikation und Beschreibung der zu ber{\"u}cksichtigenden Entscheidungsparameter. Um dieses Ziel zu erreichen, wurden Experteninterviews durchgef{\"u}hrt und im Rahmen einer qualitativen Inhaltsanalyse ausgewertet. Zentrales Ergebnis aus dieser Untersuchung ist eine {\"U}bersicht {\"u}ber Entscheidungsparameter zur Protokollauswahl in Abh{\"a}ngigkeit vom Anwendungskontext.}, language = {de} } @inproceedings{DobhanReinGoletzetal., author = {Dobhan, Alexander and Rein, Otto and Goletz, Dominik and Alyones, Hani}, title = {Computer-Vision-Systeme im Beh{\"a}ltermanagement}, series = {Mobility in a Globalised World 2020}, volume = {25}, booktitle = {Mobility in a Globalised World 2020}, editor = {Sucky, Eric and Biethahn, Niels and Werner, Jan}, publisher = {University of Bamberg Press}, address = {Bamberg}, isbn = {978-3-86309-793-6}, doi = {10.20378/irb-58415}, pages = {115 -- 135}, abstract = {Dem Management von Mehrwegbeh{\"a}ltern kommt in der nachhaltigen Logistik eine zentrale Bedeutung zu. Gleichzeitig sorgen Inlays und steigenden Beh{\"a}lteranforderungen durch die Robotik f{\"u}r Variantenreichtum hinsichtlich der Beh{\"a}lter. Die Digitalisierung und teilweise Automatisierung kann, die Effizienz und die Transparenz des Beh{\"a}ltermanagements steigern. Ziel dieses Beitrags ist es, mit einer entsprechenden Studie in einer Laborumgebung zu zeigen, wie Computer-Vision-Systeme zur Digitalisierung im Beh{\"a}ltermanagement beitragen k{\"o}nnen.}, language = {de} } @inproceedings{CorsHothTschoekeetal., author = {Cors, Tobias and Hoth, Kai and Tsch{\"o}ke, Martin and Fliedner, Malte and Dobhan, Alexander and Haase, Knut and Honekamp, Wilfried and Damm, Lars and Fokuhl, Torsten and Reimers, Jonathan and Werner, Jan and Lucas, Christian and Fleischhauer Correa da Costa, Mariana and Honekamp, Ivonne and Fichtner, Liesa and Kempf, Florian and Sucky, Eric and Schneider, Larissa and Felch, Vanessa and Motschenbacher, Stefan and Straubert, Christian and Metz, Julia and Ott, Andreas and Willner, Thomas and Sievers, Anika and Kolke, Reinhard and Koch, G{\"u}nter}, title = {Mobility in a Globalised World 2019}, series = {Logistik und Supply Chain Management, Band 23}, booktitle = {Logistik und Supply Chain Management, Band 23}, editor = {Werner, Jan and Biethahn, Niels and Kolke, Andreas and Sucky, Eric and Honekamp, Wilfried}, publisher = {University of Bamberg Press}, address = {Bamberg}, isbn = {978-3-86309-731-8}, doi = {10.20378/irb-47670}, pages = {304}, abstract = {The term mobility has different meanings in the following science disciplines. In economics, mobility is the ability of an individual or a group to improve their economic status in relation to income and wealth within their lifetime or between generations. In information systems and computer science, mobility is used for the concept of mobile computing, in which a computer is transported by a person during normal use. Logistics creates by the design of logistics networks the infrastructure for the mobility of people and goods. Electric mobility is one of today's solutions from an engineering perspective to reduce the need of energy resources and environmental impact. Moreover, for urban planning, mobility is the crunch question about how to optimize the different needs for mobility and how to link different transportation systems. In this publication we collected the ideas of practitioners, researchers, and government officials regarding the different modes of mobility in a globalised world, focusing on both domestic and international issues.}, language = {de} } @inproceedings{DobhanWuellerichRoehner, author = {Dobhan, Alexander and W{\"u}llerich, Thomas and R{\"o}hner, David}, title = {Eye-Tracking and Usability in (Mobile) ERP Systems}, series = {International Conference on Enterprise Information Systems. ICEIS 2021. Lecture Notes in Business Information Processing}, volume = {445}, booktitle = {International Conference on Enterprise Information Systems. ICEIS 2021. Lecture Notes in Business Information Processing}, editor = {Filipe, Joaquim and Smialek, Michal and Brodsky, Alexander and Hammoudi, Slimane}, publisher = {Springer}, address = {Cham}, isbn = {978-3-031-08964-0}, doi = {10.1007/978-3-031-08965-7_21}, pages = {403 -- 423}, abstract = {This article covers the development of a specific model for the end-user-based evaluation of the usability of Mobile ERP systems employing eye-tracking technology. Recent studies show that the mobile use of ERP software is significant, even though there is also room for improvement. Simultaneously, it is undisputed that ERP-specific usability models are necessary to meet the specific requirements of ERP systems. Therefore, we examine usability dimensions in the Mobile ERP context in a first, preliminary study. In addition, we investigate how eye-tracking technology can support the usability measurement for each usability dimension. Therefore, after a detailed literature analysis, a usability model for the mobile application of ERP systems (Mobile ERP) is developed. Subsequently, we summarize the results of a first explorative preliminary study with 19 test persons. The results show that the model allows the usability of mobile ERP systems to be classified and that few decisive factors contribute to the perception of good usability in ERP systems. In the third part of this paper (after literature review and usability study), we introduce an overview of eye-tracking metrics for MERP-U to examine which MERP-U dimensions eye-tracking measures.}, language = {en} } @inproceedings{WuellerichDobhan, author = {W{\"u}llerich, Thomas and Dobhan, Alexander}, title = {The Usability of Mobile Enterprise Resource Planning Systems}, series = {International Conference on Enterprise Information Systems (ICEIS)}, booktitle = {International Conference on Enterprise Information Systems (ICEIS)}, pages = {517 -- 524}, abstract = {This paper presents a model for end-user-based evaluation of the usability of mobile ERP systems. Recent studies show that the mobile use of ERP software is both, crucial for user satisfaction and still improvable for many ERP systems. Therefore, ERP-specific usability models are necessary to meet the requirements of ERP systems in comparison to e.g., apps for private use. The research objective is therefore to develop a model that enables software providers to measure and benchmark the usability of their software products. Therefore, we introduce after a literature research a usability model for the mobile application of ERP systems (mobile ERP). Our usability model is based on the widely used PACMAD model. We modify the PACMAD model for the context of ERP systems. This results in a new end-user-based model, that differs from existing models, because of its focus on end-users and the ERP context. Subsequently, the model will be tested in an initial study with 19 test persons. The results of the study indicate two main findings. Firstly, the model allows the measurement of the usability of mobile ERP systems. Secondly, some key factors substantially affect the usability of mobile ERP systems.}, language = {en} } @article{HofmannEberhardtHeusingeretal., author = {Hofmann, Jan and Eberhardt, Lars and Heusinger, Moritz and Dobhan, Alexander and Engelmann, Bastian and Schleif, Frank-Michael}, title = {Optimierung von Prozessen und Werkzeugmaschinen durch Bereitstellung, Analyse und Soll-Ist-Vergleich von Produktionsdaten}, series = {FHWS Science Journal}, volume = {5}, journal = {FHWS Science Journal}, number = {2}, issn = {2196-6095}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:863-opus-20012}, pages = {135 -- 142}, abstract = {Mit einem Umsatz von 103 Milliarden Euro ist die Metallindustrie eine der gr{\"o}ßten deutschen Industriebranchen. Diese ist von volatilen Marktbedingungen und hohem Wettbewerb gepr{\"a}gt [1][2]. Kleine und mittlere produzierende Unternehmen (sogenannte KMU) sehen zunehmend gravierende Probleme bei der Einhaltung von Lieferterminen bedingt durch hohe Durchlaufzeiten in der Produktion [3]. Neben kaufm{\"a}nnischen Planungssystemen zur Erstellung von Produktionspl{\"a}nen nutzen Unternehmen als Planungsgrundlage weiterhin Excel mit 31 \% und manuelle Prozesse mit 10 \% [4]. Gleiches gilt f{\"u}r Produktwechselvorg{\"a}nge auf Maschinen (R{\"u}sten). Aufgrund dieser Aspekte ist es notwendig, die Rentabilit{\"a}t der KMU in der Metallindustrie zu steigern. Das wird durch effiziente Produktionsplanung und -steuerung, sowie der daraus resultierenden hohen Reaktionsf{\"a}higkeit und Flexibilit{\"a}t realisiert. Daher ist die Produktionsplanung auf die Markt- und Kundenanforderungen und die Anlageneffektivit{\"a}t auf ein hohes und stabiles Niveau auszurichten [5]. Hier bietet die Erfassung von Echtzeitdaten eine ad{\"a}quate Reaktion auf die genannten Anforderungen. Ebenfalls liefert sie großes Potenzial f{\"u}r die Produktionsplanung und -steuerung, um die Disposition und Koordination von Arbeitsauftr{\"a}gen zu optimieren. Weiterhin werden St{\"o}rgr{\"o}ßen oder unvorhergesehene Planungsabweichungen reduziert [4][6]. Zus{\"a}tzlich ist eine erh{\"o}hte Transparenz und Verbesserung menschlicher Entscheidungsprozesse notwendig. Dies kann durch datengetriebene Methoden unterst{\"u}tzt und sichergestellt werden [7]. Ein Ansatz zur Optimierung des Produktionsergebnisses kann durch die Erh{\"o}hung der Anlagenproduktivit{\"a}t selbst realisiert werden. Dazu muss die Verf{\"u}gbarkeit der Anlagen durch Lokalisierung und Reduzierung von Verlusten erh{\"o}ht werden. Die Umr{\"u}stungsprozesse tragen stark negativ zur Verf{\"u}gbarkeit einer Produktion bei. Eine Steigerung der Gesamtanlageneffektivit{\"a}t (overall equipment effectiveness oder kurz OEE) in einer Fertigungsumgebung ist jedoch m{\"o}glich durch eine intelligente Nutzung von Sensordaten mit Techniken wie z. B. Machine Learning (ML).}, language = {de} } @inproceedings{HartmannDobhanEngelmannetal., author = {Hartmann, J{\"u}rgen and Dobhan, Alexander and Engelmann, Bastian and Eberhardt, Lars and Heusinger, Moritz and Raab, C and Schleif, Frank-Michael and T{\"u}rk, M.}, title = {Optimierung von Prozessen und Werkzeugmaschinen durch Bereitstellung, Analyse und Soll-Ist-Vergleich von Produktionsdaten: Digitalkonferenz}, language = {en} } @incollection{ZieglerIsingDobhanetal.2023, author = {Ziegler, Cedric C. and Ising, Julia and Dobhan, Alexander and Storath, Martin}, title = {Computer Vision in Reusable Container Management : Requirements, Conception, and Data Acquisition}, series = {Logistik und Supply Chain Management}, booktitle = {Logistik und Supply Chain Management}, publisher = {University of Bamberg Press}, isbn = {9783863099411}, issn = {2750-8277}, doi = {https://10.20378/irb-92408}, pages = {107 -- 122}, year = {2023}, abstract = {In container management, the reuse of small load carriers is a business alternative to disposal carriers. Reusable container management is furthermore a solution to improve the environmental impact of the logistic industry. The sorting and stock management of small load carriers are today primarily manual work and have consequently a low level of automation. In order to increase the automation of returnable containers, it is crucial to establish a computer vision system that (i) classifies the containers and (ii) detects potential defects or stains. This paper provides an overview and a discussion of the applications that are already in use. Object detection is necessary for many actions in the container management business processes, such as inventory and stock management. Detection of defects on the small load carrier is required for scrapping the carriers to ensure a smooth process in any business process involving the carrier and to decide whether additional process steps, e.g., cleaning, are required. The literature review in this paper establishes the demand for computer vision detection and shows the project setup necessary to conduct research in this area. The comparison with other applications of defect and anomaly detection supports the applicability and shows the need for further research in this specific academic field. This leads to a project outline and the research provides the technical implementation of the detections in container management. Accordingly, the research provides a work- flow guide from data acquisition to a high-quality dataset of labeled anomalies of small load carriers.}, language = {en} }