TY  - JOUR
A1  - Förster, Arnold
A1  - Schäpers, T.
A1  - Krüger, M.
A1  - Appenzeller, J.
T1  - Effect of electron-electron interaction on hot ballistic electron beams / Th. Schäpers ; M. Krüger ; J. Appenzeller ; A. Förster ...
JF  - Applied physics letters. 66 (1995), H. 26
Y1  - 1995
SN  - 0003-6951
N1  - ISSN der E-Ausg.: 1077-3118
SP  - 3603
EP  - 3606
ER  - 
TY  - JOUR
A1  - Rupp, Matthias
A1  - Rieke, Christian
A1  - Handschuh, Nils
A1  - Kuperjans, Isabel
T1  - Economic and ecological optimization of electric bus charging considering variable electricity prices and CO₂eq intensities
JF  - Transportation Research Part D: Transport and Environment
N2  - In many cities, diesel buses are being replaced by electric buses with the aim of reducing local emissions and thus improving air quality. The protection of the environment and the health of the population is the highest priority of our society. For the transport companies that operate these buses, not only ecological issues but also economic issues are of great importance. Due to the high purchase costs of electric buses compared to conventional buses, operators are forced to use electric vehicles in a targeted manner in order to ensure amortization over the service life of the vehicles. A compromise between ecology and economy must be found in order to both protect the environment and ensure economical operation of the buses.

In this study, we present a new methodology for optimizing the vehicles’ charging time as a function of the parameters CO₂eq emissions and electricity costs. Based on recorded driving profiles in daily bus operation, the energy demands of conventional and electric buses are calculated for the passenger transportation in the city of Aachen in 2017. Different charging scenarios are defined to analyze the influence of the temporal variability of CO₂eq intensity and electricity price on the environmental impact and economy of the bus. For every individual day of a year, charging periods with the lowest and highest costs and emissions are identified and recommendations for daily bus operation are made. To enable both the ecological and economical operation of the bus, the parameters of electricity price and CO₂ are weighted differently, and several charging periods are proposed, taking into account the priorities previously set. A sensitivity analysis is carried out to evaluate the influence of selected parameters and to derive recommendations for improving the ecological and economic balance of the battery-powered electric vehicle.

In all scenarios, the optimization of the charging period results in energy cost savings of a maximum of 13.6% compared to charging at a fixed electricity price. The savings potential of CO₂eq emissions is similar, at 14.9%. From an economic point of view, charging between 2 a.m. and 4 a.m. results in the lowest energy costs on average. The CO₂eq intensity is also low in this period, but midday charging leads to the largest savings in CO₂eq emissions. From a life cycle perspective, the electric bus is not economically competitive with the conventional bus. However, from an ecological point of view, the electric bus saves on average 37.5% CO₂eq emissions over its service life compared to the diesel bus. The reduction potential is maximized if the electric vehicle exclusively consumes electricity from solar and wind power.
Y1  - 2020
U6  - http://dx.doi.org/10.1016/j.trd.2020.102293
SN  - 1361-9209
VL  - 81
IS  - Article 102293
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Marinkovic, Marko
A1  - Butenweg, Christoph
T1  - Earthquake-proof system for masonry infills in RC frame structures
JF  - International Journal of Masonry Research and Innovation
Y1  - 2020
U6  - http://dx.doi.org/10.1504/IJMRI.2020.106328
SN  - 2056-9467
VL  - 5
IS  - 2
SP  - 185
EP  - 208
PB  - Inderscience Enterprises
CY  - Olney, Bucks
ER  - 
TY  - JOUR
A1  - Hoyler, Friedrich
A1  - Colvin, G. G.
A1  - Robinson, S. J.
T1  - E0 transitions in 106Pd studied by neutron capture / G. G. Colvin ; F. Hoyler ; S. J. Robinson
JF  - Journal of physics / G. 13 (1987), H. 2
Y1  - 1987
SN  - 0305-4616
SP  - 191
EP  - 204
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Leuther, A.
A1  - Lüth, H.
T1  - DX centres, conduction band offsets and Si-dopant segregation in heterostructures / A. Leuther ; A. Förster ; H. Lüth ...
JF  - Semiconductor science and technology. 11 (1996), H. 5
Y1  - 1996
SN  - 1361-6641
SP  - 766
EP  - 771
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Hauke, M.
A1  - Jakumeit, J.
A1  - Krafft, B.
T1  - DX Centers in Al0.3Ga0.7As/GaAs Analyzed by Point Contact Measurements. Hauke, M.; Jakumeit, J.; Krafft, B.; Nimtz, G.; Förster, A.; Lüth, H.
JF  - Journal of Applied Physics. 84 (1998), H. 4
Y1  - 1998
SN  - 1089-7550
SP  - 2034
EP  - 2039
ER  - 
TY  - JOUR
A1  - Thielemann, Frank
T1  - Druckindustrielle Innovation
JF  - Der Siebdruck. 47 (1998), H. 4
Y1  - 1998
SN  - 0178-2835
SP  - 32
EP  - ff
ER  - 
TY  - JOUR
A1  - Steuer-Dankert, Linda
A1  - Sharma, Mamta Rameshwarlal
A1  - Bleck, Wolfgang
A1  - Leicht-Scholten, Carmen
T1  - Diversity and innovation management in large research groups
JF  - International Journal of Innovation Management
N2  - Contemporary research appreciates a diverse workforce as a potential source of innovation. Researchers explore the fine details of why diversity management is central for generating innovations in heterogeneous research groups and how it could be effectively implemented into organizations. Complex research associations that discuss topics with a high impact on society increasingly address the necessity of establishing a diverse workforce to confront the challenges of tomorrow. Characterized by complex management structures as well as hierarchies, research associations have not been a subject of investigation until now. For this reason, the presented research project aims to develop a diversity and innovation management strategy with the ultimate goal of inducing change in the corporate culture. The proposed approach consisted of six phases; the first two phases investigated the status quo of diversity in the existing organizational structures of member institutes and the variety of particular working cultures within the research association. The third and the fourth phases utilized qualitative and quantitative studies. The third phase focused on the connection of management level to diversity and innovation, and the need for diversity and innovation management, and tailor-made methods of implementing them. The first three phases have been accomplished successfully; preliminary results are already available. The fourth phase will mainly focus on exploring the mind-set of the employees. The fifth phase will consolidate the findings in the first four phases into an implementable strategy. The final phase will address the implementation of this strategy into the organization. Phases 4 to 6 have not yet been undertaken
KW  - diversity management
KW  - innovation management
KW  - research association
KW  - change management
KW  - engineering
Y1  - 2017
SN  - 1757-5877
VL  - 5
IS  - 2
SP  - 49
EP  - 72
ER  - 
TY  - JOUR
A1  - Schwarzer, Klemens
A1  - Krings, T.
T1  - Dissemination of solar cookers with and without temporary storage : a report of concrete examples ; experiences from Chile, India and Mali
JF  - Proceedings / EuroSun '96 : 10. Internationales Sonnenforum. Ed. by A. Goetzberger ... - Bd. 4
Y1  - 1996
N1  - EuroSun <1, 1996, Freiburg, Breisgau>
SP  - 1479
EP  - 1482
PB  - DGS-Sonnenenergie-Verl.
CY  - München
ER  - 
TY  - JOUR
A1  - Breitbach, Gerd
A1  - Penkalla, H.-J.
A1  - Schubert, F.
T1  - Diskussion eines neuen ORNL-Stoffgesetzes fuer Inconel 617 / H.-J. Penkalla ; G. Breitbach ; F. Schubert
JF  - Sicherheit und Verfügbarkeit in der Anlagentechnik mit dem Schwerpunkt Langzeitintegrität der druckführenden Bauteile von Kernkraftwerken : [5. - 6. Oktober 1989] / Staatliche Materialprüfungsanstalt Universität Stuttgart. - Bd. 2 : Zeitstandvehalten, Kriechvorgänge, Rohrleitungsverhalten, Bruchmechanik : (Vorträge 23 - 45)
Y1  - 1989
N1  - (... MPA-Seminar ; 15)
SP  - 28.1
EP  - 28.20
PB  - MPA
CY  - Stuttgart
ER  - 
TY  - JOUR
A1  - Schüller-Ruhl, Aaron
A1  - Dinstühler, Leonard
A1  - Senger, Thorsten
A1  - Bergfeld, Stefan
A1  - Ingenhag, Christian
A1  - Fleischhaker, Robert
ED  - Mackenzie, Jacob
T1  - Direct fabrication of arbitrary phase masks in optical glass via ultra-short pulsed laser writing of refractive index modifications
JF  - Applied Physics B
N2  - We study the possibility to fabricate an arbitrary phase mask in a one-step laser-writing process inside the volume of an optical glass substrate. We derive the phase mask from a Gerchberg–Saxton-type algorithm as an array and create each individual phase shift using a refractive index modification of variable axial length. We realize the variable axial length by superimposing refractive index modifications induced by an ultra-short pulsed laser at different focusing depth. Each single modification is created by applying 1000 pulses with 15 μJ pulse energy at 100 kHz to a fixed spot of 25 μm diameter and the focus is then shifted axially in steps of 10 μm. With several proof-of-principle examples, we show the feasibility of our method. In particular, we identify the induced refractive index change to about a value of Δn=1.5⋅10−3. We also determine our current limitations by calculating the overlap in the form of a scalar product and we discuss possible future improvements.
Y1  - 2022
U6  - http://dx.doi.org/10.1007/s00340-022-07928-2
SN  - 1432-0649 (Online)
SN  - 0946-2171 (Print)
N1  - Corresponding author: Robert Fleischhaker
VL  - 128
IS  - Article number: 208
SP  - 1
EP  - 11
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Kern, Alexander
A1  - Beierl, O.
A1  - Zischank, W.
T1  - DIN EN 62 305-3 - Berechnung des Trennungsabstands (Anmerkungen zur Anwendung der Berechnungsverfahren und vereinfachte Verfahren zur Abschätzung der Stromaufteilung) / Kern, A. ; Beierl, O. ; Zischank, W.
JF  - Elektropraktiker. 63 (2009), H. 3
Y1  - 2009
SN  - 0013-5569
SP  - 218
EP  - 222
PB  - HUSS-MEDIEN GmbH
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Neubauer, Boris
A1  - Jungnickel, B. J.
T1  - Diffusion als Maß für die elektrische Isolier-Dauerfestigkeit von PE. Längs- und Querdiffusion durch transkristalline Oberflächenschichten
JF  - Kunststoffe. 83 (1993), H. 3
Y1  - 1993
SN  - 0023-5563
N1  - in der Bereichsbibliothek Worringer Weg vorhanden: 33 Z 238
SP  - 231
EP  - 233
ER  - 
TY  - JOUR
A1  - Hoffschmidt, Bernhard
A1  - Koll, Gerrit
T1  - Die Zukunft der Stromerzeugung ; die Entwicklung der Luftreceivertechnologie bei Kraftanlagen München / Gerrit Koll ; Berhard Hoffschmidt
JF  - Nachrichten : Magazin des Deutschen Zentrums für Luft- und Raumfahrt / DLR (2005)
Y1  - 2005
SN  - 0937-0420
N1  - Sonderheft Solarforschung
SP  - 42
EP  - 46
ER  - 
TY  - JOUR
A1  - Kern, Alexander
A1  - Scheibe, Klaus
T1  - Die neuen internationalen Blitzschutz-Standards der Reihe IEC 62305:2010 : Überblick und Stand der Umsetzung in die nationale Normenreihe DIN EN 62305
JF  - 9. VDE/ABB-Blitzschutztagung : Vorträge der 9. VDE/ABB-Fachtagung vom 27. bis 28. Oktober 2011 in Neu-Ulm / Veranst.: Ausschuss für Blitzschutz und Blitzforschung (ABB) im VDE Verband der Elektrotechnik Elektronik Informationstechnik e.V. Wiss. Tagungsleitung: K. Stimper
Y1  - 2011
SN  - 978-3-8007-3380-4
N1  - VDE/ABB-Blitzschutztagung ; (9 ; 2011.10.27-28 ; Neu-Ulm)
SP  - 7
EP  - 12
PB  - VDE-Verl.
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Kern, Alexander
T1  - Die neuen Blitzschutznormen der Reihe DIN EN 62305 (VDE 0185-305-x)
JF  - ETZ : Elektrotechnik + Automation. 2006 (2006), H. 2
Y1  - 2006
SN  - 0170-1711
N1  - 2. ISSN: 0948-7387 ; In der Bibliothek unter 23 Z 133 (Eupener Str.) und 63 ZS 035 (Jülich) vorhanden.
SP  - 42
EP  - 45
ER  - 
TY  - JOUR
A1  - Kern, Alexander
A1  - Landers, E.-U.
T1  - Die neuen Blitzschutz-Vornormen der Reihe VDE-V 0185:2002
Y1  - 2002
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Lüth, Hans
A1  - Schäpers, Thomas
T1  - Die neue Welt
JF  - Spektrum der Wissenschaft (1999)
Y1  - 1999
SN  - 0170-2971
SP  - 90
EP  - 93
ER  - 
TY  - JOUR
A1  - Butenweg, Christoph
T1  - Die neue Erdbebenfibel. Neue Hilfsmittel für die Leichtbetonindustrie
JF  - Tagungsband 61. Ulmer Beton Tage 2017
Y1  - 2017
ER  - 
TY  - JOUR
A1  - Kern, Alexander
A1  - Landers, E.-U.
T1  - Die künftige deutsche Blitzschutznormung (2/3) – Reihe DIN EN 62305:2006 – Teil 2: Risikomanagement
JF  - De : der Elektro- und Gebäudetechniker / Ausgabe ZV. 81 (2006), H. 18 - 19
Y1  - 2006
SN  - 1617-1160
ER  -