TY  - CHAP
A1  - Bücking, Henrik
A1  - Pfaff, Raphael
A1  - Dirksmeier, Roger
T1  - Sensor positioning and thermal model for condition monitoring of pressure gas reservoirs in vehicles
T2  - Proceedings of the Fourth European Conference of the Prognostics and Health Management Society, Utrecht, Netherlands, 2018
Y1  - 2018
ER  - 
TY  - CHAP
A1  - Buschkühle, Peter
A1  - Schürmann, Volker
A1  - Wollert, Jörg F.
T1  - Abstraction of wireless communication by a convergence middleware in conjunction with a XML-configuration
T2  - Information technology and electrical engineering : devices and systems, materials and technologies for the future ; Ilmenau 07 - 10 September 2009 ; 54. IWK Internationales Wissenschaftliches Kolloquium
Y1  - 2009
SN  - 978-3-938843-44-4
SP  - 95
EP  - 96
PB  - Techn. Univ.
CY  - Ilmenau
ER  - 
TY  - CHAP
A1  - Buda, Aurel
A1  - Schürmann, Volker
A1  - Wollert, Jörg F.
T1  - Wireless technologies in factory automation
T2  - Factory automation / ed. by Javier Silvestre-Blanes
Y1  - 2010
SN  - 978-953-7619-42-8
SP  - 29
EP  - 50
PB  - Intech
CY  - London
ER  - 
TY  - CHAP
A1  - Buda, Aurel
A1  - Jozenfini, B.
A1  - Wollert, Jörg F.
T1  - Mobile ad-hoc Network for home automation based on ZigBee application framework
T2  - 1st European ZigBee Developer's Conference : June 18 - 20, 2007, Munich, Germany
Y1  - 2007
SP  - 1
EP  - 5
PB  - Design & Elektronik
CY  - Poing
ER  - 
TY  - JOUR
A1  - Bucur, Alexandru
A1  - Lazarescu, Lucian
A1  - Pop, Grigore Marian
A1  - Achimas, Gheorghe
A1  - Gebhardt, Andreas
T1  - Tribological performance of biodegradable lubricants under different surface roughness of tools
JF  - Academic Journal of Manufacturing Engineering
Y1  - 2019
SN  - 1583-7904
VL  - 17
IS  - 1
SP  - 172
EP  - 178
ER  - 
TY  - CHAP
A1  - Braun, Sebastian
A1  - Cheng, Chi-Tsun
A1  - Lai, Chow Yin
A1  - Wollert, Jörg F.
T1  - Microservice Architecture for Automation - Realization by the example of a model-factory’s manufacturing execution system
T2  - Proceedings of the 23rd World Multi-Conference on Systemics, Cybernetics and Informatics: WMSCI 2019
Y1  - 2019
SP  - 33
EP  - 37
ER  - 
TY  - JOUR
A1  - Braun, Sebastian
A1  - Cheng, Chi-Tsun
A1  - Dowey, Steve
A1  - Wollert, Jörg F.
T1  - Performance evaluation of skill-based order-assignment in production environments with multi-agent systems
JF  - IEEE Journal of Emerging and Selected Topics in Industrial Electronics
N2  - The fourth industrial revolution introduces disruptive technologies to production environments. One of these technologies are multi-agent systems (MASs), where agents virtualize machines. However, the agent's actual performances in production environments can hardly be estimated as most research has been focusing on isolated projects and specific scenarios. We address this gap by implementing a highly connected and configurable reference model with quantifiable key performance indicators (KPIs) for production scheduling and routing in single-piece workflows. Furthermore, we propose an algorithm to optimize the search of extrema in highly connected distributed systems. The benefits, limits, and drawbacks of MASs and their performances are evaluated extensively by event-based simulations against the introduced model, which acts as a benchmark. Even though the performance of the proposed MAS is, on average, slightly lower than the reference system, the increased flexibility allows it to find new solutions and deliver improved factory-planning outcomes. Our MAS shows an emerging behavior by using flexible production techniques to correct errors and compensate for bottlenecks. This increased flexibility offers substantial improvement potential. The general model in this paper allows the transfer of the results to estimate real systems or other models.
KW  - cyber-physical production systems
KW  - event-based simulation
KW  - multi-agent systems
KW  - digital factory
KW  - industrial agents
Y1  - 2021
U6  - https://doi.org/10.1109/JESTIE.2021.3108524
SN  - 2687-9735
IS  - Early Access
PB  - IEEE
CY  - New York
ER  - 
TY  - CHAP
A1  - Braun, Sebastian
A1  - Cheng, Chi-Tsun
A1  - Dowey, Steve
A1  - Wollert, Jörg F.
T1  - Survey on Security Concepts to Adapt Flexible Manufacturing and Operations Management based upon Multi-Agent Systems
T2  - 2020 IEEE 29th International Symposium on Industrial Electronics (ISIE), Proceedings
N2  - The increasing digitalization brings new opportunities but also puts new challenges to modern industrial systems. Software agents are one of the key technologies towards self-optimizing factories and are currently used to address the needs of cyber-physical production systems (CPPS). However their interplay in industrial settings needs to be understood better.This paper focusses on securing a cloud infrastructure for multi-agent systems for industrial sites. An industrial site contains multiple production processes that need to communicate with each other and each physical resource is abstracted with a software agent. This volatile architecture needs to be managed and protected from manipulation. The proposed infrastructure presents a security concept for TCP/IP communication between agents, machines, and external networks. It is based on open-source software and tested on a three-node edge cloud controlling a model-plant.
Y1  - 2020
U6  - https://doi.org/10.1109/ISIE45063.2020.9152210
N1  - 2020 IEEE 29th International Symposium on Industrial Electronics (ISIE), 17 - 19 June, 2020, Delft, Netherlands
PB  - IEEE
CY  - New York, NY
ER  - 
TY  - JOUR
A1  - Bernau, C. R.
A1  - Knödler, Matthias
A1  - Emonts, Jessica
A1  - Jäpel, Ronald Colin
A1  - Buyel, Johannes Felix
T1  - The use of predictive models to develop chromatography-based purification processes
JF  - Frontiers in Bioengineering and Biotechnology
N2  - Chromatography is the workhorse of biopharmaceutical downstream processing because it can selectively enrich a target product while removing impurities from complex feed streams. This is achieved by exploiting differences in molecular properties, such as size, charge and hydrophobicity (alone or in different combinations). Accordingly, many parameters must be tested during process development in order to maximize product purity and recovery, including resin and ligand types, conductivity, pH, gradient profiles, and the sequence of separation operations. The number of possible experimental conditions quickly becomes unmanageable. Although the range of suitable conditions can be narrowed based on experience, the time and cost of the work remain high even when using high-throughput laboratory automation. In contrast, chromatography modeling using inexpensive, parallelized computer hardware can provide expert knowledge, predicting conditions that achieve high purity and efficient recovery. The prediction of suitable conditions in silico reduces the number of empirical tests required and provides in-depth process understanding, which is recommended by regulatory authorities. In this article, we discuss the benefits and specific challenges of chromatography modeling. We describe the experimental characterization of chromatography devices and settings prior to modeling, such as the determination of column porosity. We also consider the challenges that must be overcome when models are set up and calibrated, including the cross-validation and verification of data-driven and hybrid (combined data-driven and mechanistic) models. This review will therefore support researchers intending to establish a chromatography modeling workflow in their laboratory.
KW  - biopharmaceutical production process
KW  - Data-driven models
KW  - downstream processing design
KW  - experiment quality
KW  - hybrid model validation
Y1  - 2022
U6  - https://doi.org/10.3389/fbioe.2022.1009102
SN  - 2296-4185 (online-ressource)
IS  - 10
PB  - Frontiers Media
CY  - Lausanne
ER  - 
TY  - CHAP
A1  - Beer, Stefan
A1  - Haidn, O.J.
A1  - Willms, Herbert
ED  - Carvalho, Maria da Graça
T1  - Control of stoichiometric propellant supply in an H2/O2-spinning reserve system
T2  - Combustion technologies for a clean environment : selected papers from the proceedings of the first international conference, Vilamoura, Portugal, September 3 - 6, 1991. - (Energy, combustion and the environment ;1)
Y1  - 1995
SN  - 2-88124-619-2
SP  - 825
EP  - 838
PB  - Gordon and Breach
CY  - Basel [u.a.]
ER  - 
TY  - JOUR
A1  - Beckenbach, Isabel
A1  - Scheidweiler, Robert
T1  - Perfect ƒ-Matchings and ƒ-Factors in Hypergraphs - A Combinatorial Approach
JF  - Discrete Mathematics
N2  - We prove characterizations of the existence of perfect ƒ-matchings in uniform mengerian and perfect hypergraphs. Moreover, we investigate the ƒ-factor problem in balanced hypergraphs. For uniform balanced hypergraphs we prove two existence theorems with purely combinatorial arguments, whereas for non-uniform balanced hypergraphs we show that the ƒ-factor problem is NP-hard.
Y1  - 2016
U6  - https://doi.org/10.1016/j.disc.2017.05.005
SN  - 2192-7782
N1  - Als Volltext auch bei ZIB (Zuse Institute Berlin)
VL  - 240
IS  - 10
SP  - 2499
EP  - 2506
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Anik, Sabri
A1  - Kapoor, Madan Lal
A1  - Frohberg, Martin G.
T1  - Thermodynamic behaviour of oxygen in molten substitutional alloy solvents
JF  - Zeitschrift für Metallkunde
Y1  - 1983
SN  - 0044-3093
VL  - 74
IS  - 1
SP  - 53
EP  - 58
ER  - 
TY  - JOUR
A1  - Anik, Sabri
A1  - Frohberg, Martin G.
A1  - Kapoor, Madan Lal
T1  - Experiments and theoretical considerations on the solution of oxygen in binary metal alloys
JF  - Berichte der Bunsengesellschaft für physikalische Chemie
Y1  - 1983
SN  - 0005-9021
SN  - 0940-483X
VL  - 87
IS  - 12
SP  - 1201
EP  - 1204
ER  - 
TY  - JOUR
A1  - Anik, Sabri
A1  - Frohberg, Martin G.
A1  - Kapoor, Madan Lal
T1  - Prediction of thermodynamic properties of oxygen in binary metallic solvents
JF  - Zeitschrift für Metallkunde
Y1  - 1983
SN  - 0044-3093
VL  - 74
IS  - 6
SP  - 372
EP  - 375
ER  - 
TY  - JOUR
A1  - Anik, Sabri
A1  - Frohberg, Martin G.
T1  - Thermodynamics and solubility of oxygen in liquid bismuth-lead and bismuth-antimony alloys
JF  - Berichte der Bunsengesellschaft für physikalische Chemie
Y1  - 1987
SN  - 0940-483X
SN  - 0005-9021
VL  - 91
IS  - 7
SP  - 790
EP  - 794
ER  - 
TY  - JOUR
A1  - Anik, Sabri
A1  - Frohberg, Martin G.
T1  - Thermodynamics and solubility of oxygen in liquid copper-lead alloys at 1200°C from E.M.F. measurements
JF  - Berichte der Bunsengesellschaft für physikalische Chemie
Y1  - 1984
SN  - 0940-483X
SN  - 0005-9021
VL  - 88
IS  - 8
SP  - 707
EP  - 710
ER  - 
TY  - JOUR
A1  - Anik, Sabri
A1  - Frohberg, Martin G.
T1  - Investigations of the thermodynamics of oxygen and the determination of the miscibility gap in the system copper-oxygen-lead at 12000C
JF  - Zeitschrift für Metallkunde
Y1  - 1984
SN  - 0044-3093
VL  - 75
IS  - 8
SP  - 586
EP  - 589
ER  - 
TY  - CHAP
A1  - Anik, Sabri
A1  - Frohberg, Martin G.
ED  - Brodowsky, Horst
T1  - Thermodynamic behaviour of oxygen in molten metallic alloys
T2  - Thermochemistry of alloys : recent developments of experimental methods ; [proceedings of the NATO Advanced Study Institute on Thermochemistry of Alloys, Recent Developments of Experimental Methods, Kiel, F.R.G., August 17 - 27, 1987]. - (NATO ASI series : Series C ; 286)
Y1  - 1989
SN  - 0-7923-0434-9
SP  - 419
EP  - 428
PB  - Springer
CY  - Dordrecht [u.a.]
ER  - 
TY  - JOUR
A1  - Anik, Sabri
A1  - Frohberg, Martin G.
T1  - Investigation of the thermodynamics of oxygen and the determination of phase boundaries in the system copper-oxygen-bismuth at 12000C
JF  - Zeitschrift für Metallkunde
Y1  - 1983
SN  - 0044-3093
VL  - 74
IS  - 8
SP  - 530
EP  - 534
ER  - 
TY  - JOUR
A1  - Anik, Sabri
A1  - Frohberg, Martin G.
T1  - Thermodynamics of oxygen in the copper-antimony system at 1473K
JF  - Erzmetall : Rohstoffgewinnung, Verarbeitung, Recycling, Umwelttechnik
Y1  - 1988
SN  - 0044-2658
VL  - 41
IS  - 10
SP  - 498
EP  - 501
ER  -