TY - CHAP
A1 - Fuchs, Britta
A1 - Ritz, Thomas
A1 - Strauch, Jakob
ED - Obaidat, Mohammad S.
T1 - Usability of mobile applications : dissemination of usability engineering in small and medium enterprises
T2 - Proceedings of the International Conference on Data Communication Networking, e-Business and Optical Communication Systems : Rome, Italy, 24 - 27 July, 2012 ; [integrated in the ICETE (International Conference on e-Business and Telecommunications)]
Y1 - 2012
SN - 978-989-8565-23-5
N1 - Nebentitel: DCNET; ICE-B; OPTICS
SP - 272
EP - 277
PB - SciTePress
CY - [Lissabon]
ER -
TY - CHAP
A1 - Galdi, Chiara
A1 - Hartung, Frank
A1 - Dugelay, Jean-Luc
T1 - Socrates: A database of realistic data for source camera recognition on smartphones
T2 - Proceedings of the 8th International Conference on Pattern Recognition Applications and Methods - Volume 1: ICPRAM
Y1 - 2019
SN - 978-989-758-351-3
U6 - http://dx.doi.org/10.5220/0007403706480655
SP - 648
EP - 655
ER -
TY - CHAP
A1 - Galdi, Chiara
A1 - Hartung, Frank
A1 - Dugelay, Jean-Luc
T1 - Videos versus still images: Asymmetric sensor pattern noise comparison on mobile phones
T2 - Electronic Imaging
N2 - Nowadays, the most employed devices for recoding videos or capturing images are undoubtedly the smartphones. Our work investigates the application of source camera identification on mobile phones. We present a dataset entirely collected by mobile phones. The dataset contains both still images and videos collected by 67 different smartphones. Part of the images consists in photos of uniform backgrounds, especially collected for the computation of the RSPN. Identifying the source camera given a video is particularly challenging due to the strong video compression. The experiments reported in this paper, show the large variation in performance when testing an highly accurate technique on still images and videos.
KW - Image Forensics
KW - Mobile Phones
KW - Image Database
Y1 - 2017
U6 - http://dx.doi.org/10.2352/ISSN.2470-1173.2017.7.MWSF-331
SN - 2470-1173
N1 - IS&T International Symposium on Electronic Imaging 2017
Media Watermarking, Security, and Forensics 2017
SP - 100
EP - 103
PB - Society for Imaging Science and Technology
CY - Springfield, Virginia
ER -
TY - CHAP
A1 - Gebhardt, Andreas
A1 - Ritz, Thomas
A1 - Siekmann, Kirsten
A1 - Wallenborn, Ramona
ED - Demmer, Axel
T1 - Additive manufacturing businesses in the process chain of individualized mass products
T2 - DDMC 2014 : Proceedings of the Fraunhofer Direct Digital Manufacturing Conference
Y1 - 2014
SN - 978-3-8396-9128-1 (E-Book)
PB - Fraunhofer
CY - Stuttgart
ER -
TY - CHAP
A1 - Gligorevic, Snjezana
T1 - Joint channel estimation and equalization for fast time-variant multipath channels
T2 - Proceedings / 13th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications : PIMRC 2002 : Lisboa, Portugal, September 15 - 18, 2002
Y1 - 2002
SN - 0-7803-7589-0
SP - 1127
EP - 1130
ER -
TY - JOUR
A1 - Gligorevic, Snjezana
T1 - Joint channel estimation and equalisation of fast time-varying frequency-selective channels
JF - European transactions on telecommunications
Y1 - 2008
SN - 1541-8251; 2161-3915; 1120-3862; 1124-318X
VL - Vol. 19
IS - Iss. 1
SP - 1
EP - 13
ER -
TY - JOUR
A1 - Gligorevic, Snjezana
T1 - Airport surface propagation channel in the C-Band: measurements and modeling
JF - IEEE transactions on antennas and propagation
Y1 - 2013
SN - 0018-926x
VL - Vol. 61
IS - Iss. 9
SP - 4792
EP - 4802
PB - IEEE
CY - New York
ER -
TY - CHAP
A1 - Gligorevic, Snjezana
T1 - Stochastic modeling of non-stationary channels
T2 - 7th European Conference on Antennas and Propagation (EuCAP) : 8 - 12 April 2013, Gothenburg, Sweden
Y1 - 2013
SN - 978-1-4673-2187-7 ; 978-88-907018-1-8
SP - 1677
EP - 1681
PB - IEEE
CY - Piscataway, NJ
ER -
TY - CHAP
A1 - Gligorevic, Snjezana
A1 - Bott, Rainer
A1 - Sorger, Ulrich
ED - Fazel, Khaled
T1 - Equalization for multi-carrier systems in time-varying channels
T2 - Multi-carrier spread-spectrum for future generation wireless systems : fourth international workshop, Germany, September 17-19, 2003
Y1 - 2004
SN - 1402018371
SP - 251
EP - 258
ER -
TY - CHAP
A1 - Gligorevic, Snjezana
A1 - Epple, Ulrich
A1 - Schnell, Michael
T1 - The LDACS1 physical layer design
T2 - Future aeronautical communications
Y1 - 2011
SN - 978-953-307-625-6
SP - 317
EP - 332
PB - Intech
CY - London
ER -
TY - CHAP
A1 - Gligorevic, Snjezana
A1 - Jost, T.
A1 - Walter, M.
T1 - Scatterer based airport surface channel model
T2 - IEEE/AIAA 28th Digital Avionics Systems Conference : DASC '09 ; 23 - 29 [i.e. 25 - 29] Oct. 2009, Orlando, Fla.
Y1 - 2009
SN - 978-1-4244-4078-8
SP - 4C2-1
EP - 4C2-10
ER -
TY - CHAP
A1 - Gligorevic, Snjezana
A1 - Pulini, Paola
T1 - Simplified airport surface channel model based on the WSSUS assumption
T2 - 2010 Integrated Communications, Navigation and Surveillance Conference (ICNS 2010) : Herndon, Virginia, USA, 11 - 13 May 2010
Y1 - 2010
SN - 978-1-4244-7457-8
SN - 2155-4943
SP - F2-1
EP - F2-11
ER -
TY - CHAP
A1 - Gligorevic, Snjezana
A1 - Schneckenburger, N.
A1 - Franzen, N.
A1 - Schnell, Michael
A1 - Müller, S.
A1 - Günzel, H.
T1 - L-Band compatibility of LDACS1
T2 - 3rd CEAS Air and Space Conference, 24 - 28 October 2011, Venezia, Italy
Y1 - 2011
SP - 1
EP - 8
ER -
TY - CHAP
A1 - Gligorevic, Snjezana
A1 - Sorger, Ulrich
T1 - A new approach to tracking time-variant channels
T2 - Proceedings / 5th International Symposium on Wireless Personal Multimedia Communications : WPMC : October 27 - 30, 2002, Honolulu, Hawaii ; vol. 3
Y1 - 2002
SN - 0-7803-7442-8
SN - 1347-6890
SP - 1342
EP - 1345
ER -
TY - CHAP
A1 - Gligorevic, Snjezana
A1 - Zierhut, R.
A1 - Jost, T.
A1 - Wang, Wei
T1 - Airport channel measurements at 5.2GHz
T2 - 3rd European Conference on Antennas and Propagation : (EuCAP) ; Berlin, Germany, 23 - 27 March 2009
Y1 - 2009
SN - 978-1-4244-4753-4 ; 978-3-00-024573-2
SP - 877
EP - 881
ER -
TY - CHAP
A1 - Goeckel, Tom
A1 - Schiffer, Stefan
A1 - Wagner, Hermann
A1 - Lakemeyer, Gerhard
T1 - The Video Conference Tool Robot ViCToR
T2 - Intelligent Robotics and Applications : 8th International Conference, ICIRA 2015, Portsmouth, UK, August 24-27, 2015, Proceedings, Part II
N2 - We present a robotic tool that autonomously follows a conversation to enable remote presence in video conferencing. When humans participate in a meeting with the help of video conferencing tools, it is crucial that they are able to follow the conversation both with acoustic and visual input. To this end, we design and implement a video conferencing tool robot that uses binaural sound source localization as its main source to autonomously orient towards the currently talking speaker. To increase robustness of the acoustic cue against noise we supplement the sound localization with a source detection stage. Also, we include a simple onset detector to retain fast response times. Since we only use two microphones, we are confronted with ambiguities on whether a source is in front or behind the device. We resolve these ambiguities with the help of face detection and additional moves. We tailor the system to our target scenarios in experiments with a four minute scripted conversation. In these experiments we evaluate the influence of different system settings on the responsiveness and accuracy of the device.
Y1 - 2015
SN - 978-3-319-22876-1
U6 - http://dx.doi.org/10.1007/978-3-319-22876-1_6
N1 - Lecture Notes in Computer Science ; 9245
SP - 61
EP - 73
PB - Springer
ER -
TY - CHAP
A1 - Granat, Andreas
A1 - Höfken, Hans-Wilhelm
A1 - Schuba, Marko
T1 - Intrusion Detection of the ICS Protocol EtherCAT
N2 - Control mechanisms like Industrial Controls Systems (ICS) and its subgroup SCADA (Supervisory Control and Data Acquisition) are a prerequisite to automate industrial processes. While protection of ICS on process management level is relatively straightforward – well known office IT security mechanisms can be used – protection on field bus level is harder to achieve as there are real-time and production requirements like 24x7 to consider. One option to improve security on field bus level is to introduce controls that help to detect and to react on attacks. This paper introduces an initial set of intrusion detection mechanisms for the field bus protocol EtherCAT. To this end existing Ethernet attack vectors including packet injection and man-in-the-middle attacks are tested in an EtherCAT environment, where they could interrupt the EtherCAT network and may even cause physical damage. Based on the signatures of such attacks, a preprocessor and new rule options are defined for the open source intrusion detection system Snort demonstrating the general feasibility of intrusion detection on field bus level.
Y1 - 2017
N1 - International Conference on Computer, Network Security and Communication Engineering (CNSCE 2017), March 26-27, 2017, Bangkok, Thailand
SP - 1
EP - 5
ER -
TY - CHAP
A1 - Grothof, M.
A1 - Schwarte, Rudolf
A1 - Buxbaum, Bernd
A1 - Ringbeck, Thorsten
A1 - [u.a.],
ED - Wagner, Elmar
T1 - Product monitoring with MSM-PMD-Array
T2 - Proceedings / OPTO 2002 : an event of the Association for Sensor Technology AMA ; 14 - 16 May 2002, Exhibition Centre Erfurt, Germany / International Conference Optoelectronics, Optical Sensors & Measuring Techniques
Y1 - 2002
N1 - OPTO <5, 2002, Erfurt> ; International Conference Optoelectronics, Optical Sensors & Measuring Techniques
SP - 41
EP - 47
PB - AMA Service GmbH
CY - Wunsdorf
ER -
TY - CHAP
A1 - Grund, Raphael M.
A1 - Altherr, Lena
ED - Reiff-Stephan, Jörg
ED - Jäkel, Jens
ED - Schwarz, André
T1 - Development of an open source energy disaggregation tool for the home automation platform Home Assistant
T2 - Tagungsband AALE 2023 : mit Automatisierung gegen den Klimawandel
N2 - In order to reduce energy consumption of homes, it is important to make transparent which devices consume how much energy. However, power consumption is often only monitored aggregated at the house energy meter. Disaggregating this power consumption into the contributions of individual devices can be achieved using Machine Learning. Our work aims at making state of the art disaggregation algorithms accessibe for users of the open source home automation platform Home Assistant.
KW - Home Automation Platform
KW - Home Assistant
KW - Open Source
KW - Machine Learning
KW - Energy Disaggregation
Y1 - 2023
SN - 978-3-910103-01-6
U6 - http://dx.doi.org/10.33968/2023.02
N1 - 19. AALE-Konferenz. Luxemburg, 08.03.-10.03.2023.
BTS Connected Buildings & Cities Luxemburg
(Tagungsband unter https://doi.org/10.33968/2023.01)
SP - 11
EP - 20
PB - le-tex publishing services GmbH
CY - Leipzig
ER -
TY - JOUR
A1 - Gspandl, Stephan
A1 - Pill, Ingo
A1 - Reip, Michael
A1 - Steinbauer, Gerald
A1 - Ferrein, Alexander
T1 - Belief Management for High-Level Robot Programs
JF - Proceedings of the Twenty-Second International Joint Conference on Artificial Intelligence [electronic resource] : Barcelona, Catalonia, Spain, 16 - 22 July 2011 / sponsored by International Joint Conferences on Artificial Intelligence (IJCAI) and the Association for the Advancement of Artificial Intelligence (AAAI). Ed. by Toby Walsh
Y1 - 2011
N1 - International Joint Conference on Artificial Intelligence ; (22 : ; 2011.07.16-22 : ; Barcelona, Spain) ; IJCAI ; (22 : ; 2011.07.16-22 : ; Barcelona, Spain)
SP - 900
EP - 905
ER -
TY - JOUR
A1 - Haag, S.
A1 - Zontar, D.
A1 - Schleupen, Josef
A1 - Müller, T.
A1 - Brecher, C.
T1 - Chain of refined perception in self-optimizing assembly of micro-optical systems
JF - Journal of sensors and sensor systems
N2 - Today, the assembly of laser systems requires a large share of manual operations due to its complexity regarding the optimal alignment of optics. Although the feasibility of automated alignment of laser optics has been shown in research labs, the development effort for the automation of assembly does not meet economic requirements – especially for low-volume laser production. This paper presents a model-based and sensor-integrated assembly execution approach for flexible assembly cells consisting of a macro-positioner covering a large workspace and a compact micromanipulator with camera attached to the positioner. In order to make full use of available models from computer-aided design (CAD) and optical simulation, sensor systems at different levels of accuracy are used for matching perceived information with model data. This approach is named "chain of refined perception", and it allows for automated planning of complex assembly tasks along all major phases of assembly such as collision-free path planning, part feeding, and active and passive alignment. The focus of the paper is put on the in-process image-based metrology and information extraction used for identifying and calibrating local coordinate systems as well as the exploitation of that information for a part feeding process for micro-optics. Results will be presented regarding the processes of automated calibration of the robot camera as well as the local coordinate systems of part feeding area and robot base.
Y1 - 2014
U6 - http://dx.doi.org/10.5194/jsss-3-87-2014
SN - 2194-878X
VL - 3
IS - 1
SP - 87
EP - 95
PB - Copernicus Publ.
CY - Göttingen
ER -
TY - CHAP
A1 - Hadinejad-Mahram, Hafez
A1 - Gligorevic, Snjezana
A1 - Ritscher, Matthias
T1 - Joint iterative channel estimation and parallel interference cancellation for coded DS-CDMA
T2 - Proceeding of the International Conference on Telecommunications 2002 : [Beijing, 23 - 26 June 2002]. Vol. 2
Y1 - 2002
SP - 566
EP - 570
ER -
TY - CHAP
A1 - Hagebeuker, Bianca
A1 - Ringbeck, Thorsten
A1 - Frydlewicz, Paul
A1 - Jesorsky, Oliver
A1 - Sünkel, Thomas
ED - Grote, Caspar
T1 - PMD-Sensoren als Schlüsselkomponenten für die mehrdimensionale Umfelderfassung des Fahrzeuginnenraums
T2 - Begleittexte zum Entwicklerforum KFZ-Elektronik & FlexRay Solution Day : 15.Mai 2007, Ludwigsburg
Y1 - 2007
N1 - Entwicklerforum Kfz-Elektronik <2007, Ludwigsburg> ; FlexRay Solution Day <2007, Ludwigsburg>
SP - 287
EP - 296
PB - WEKA-Fachzeitschr.-Verl.
CY - Poing
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
T1 - Loss mechanisms and domain stabilization in doped BaTiO₃
JF - Journal of Physics C: Solid State Physics
Y1 - 1978
SN - 0022-3719
U6 - http://dx.doi.org/10.1088/0022-3719/11/15/031
VL - 11
IS - 15
SP - 3333
EP - 3344
PB - n.a.
CY - London
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
T1 - Electrical properties of acceptor-doped BaTiO3 ceramic. Hagemann, H. J.
JF - Berichte der Deutschen Keramischen Gesellschaft. 55 (1978)
Y1 - 1978
SN - 0365-9542
SP - 353
EP - 355
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
T1 - Reduction of hysteresis losses of ferroelectric BaTiO3. Hagemann, H. J.
JF - Ferroelectrics. 22 (1978)
Y1 - 1978
SN - 0015-0193
SP - 743
EP - 743
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
A1 - Bachmann, P. K.
A1 - Lade, H.
A1 - Leers, D.
T1 - Thermal properties of C/H-, C/H/O-, C/H/N- and C/H/X-grown polycrystalline CVD diamond. P. K. Bachmann, H. J. Hagemann, H. Lade, ...
JF - Diamond and Related Material. Vol 4. (1995), H. Issue 5-6
Y1 - 1995
N1 - abstract online:
SP - 820
EP - 826
PB - Elsevier Science
CY - New York, NY [u.a.]
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
A1 - Bachmann, P. K.
A1 - Lade, H.
A1 - Leers, D.
T1 - Influence of the gas phase on diamond deposition and diamond properties. Bachmann, P. K.; Hagemann, H.J.; Lade, H.; Leers, D.; Picht, F.; Wiechert, D. U.
JF - Advanced materials '94 : proceedings of the NIRIM International Symposium on Advanced Materials '94, Tsukuba, Japan, March 13 - 17, 1994 / National Institute for Research in Inorganic Materials. Ed. by M. Kamo
Y1 - 1994
N1 - NIRIM International Symposium on Advanced Materials ; <1994, Tsukuba>
SP - 115
EP - 120
PB - International Communications Specialists, Inc.
CY - Tokyo
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
A1 - Bachmann, P.K.
A1 - Lade, H.
A1 - Leers, D.
T1 - CVD Diamond Growth: Gas Compositions and Film Properties / P.K. Bachmann, H.J. Hagemann, H. Lade, D. Leers, D.U. Wiechert and H. Wilson
JF - Advanced materials '94 : proceedings of the NIRIM International Symposium on Advanced Materials '94, Tsukuba, Japan, March 13 - 17, 1994 / National Institute for Research in Inorganic Materials. Ed. by M. Kamo ...
Y1 - 1994
N1 - NIRIM International Symposium on Advanced Materials ; 1994 (Tsukuba) : 1994.03.13-17
SP - 115
EP - 120
PB - International Communications Specialists
CY - Tokyo
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
A1 - Bachmann, P.K.
A1 - Lade, H.
A1 - Leers, D.
T1 - Diamond chemical vapor deposition: gas compositions and film properties / Bachmann, P.K.; Hagemann, H.-J.; Lade, H; Leers, D.; Picht, F.; Wiechert, D.U.; Wilson, H.
JF - Diamond, SiC and nitride wide bandgap semiconductors : symposium held April 4 - 8, 1994, San Francisco, California, U.S.A. / ed.: Calvin H. Carter, Jr. ...
Y1 - 1994
SN - 1-55899-239-1
N1 - Materials Research Society symposium proceedings ; 339
SP - 267
EP - 277
CY - Pittsburgh, Penn.
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
A1 - Backhaus, U.
A1 - Goessner, S.
T1 - Collaborative eLearning Concepts for University Level Online Laboratory Courses in Engineering. U. Backhaus, S. Goessner, H. J. Hagemann
JF - Proceedings Online Educa Berlin: 8th International Conference on Technology Supported Learning & Training. 2002
Y1 - 2002
N1 - Online Educa <2002, Berlin>
SP - 62
EP - 66
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
A1 - Breitschuh, S.
A1 - Graber, S.
A1 - Schmitz, Günter
T1 - Internet Laboratory Courses with Remote Access and Control of Real Measurements on Sensors and Electronic Components
JF - Mechatronics & Robotics 2004 : Aachen, Germany, September 13 - 15, 2004 / [APS - European Centre for Mechatronics]. P. Drews (ed.)
Y1 - 2004
SN - 3-938153-30-X
N1 - MechRob <2004, Aachen>
SP - 1280
EP - 1284
PB - Eysoldt
CY - Aachen
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
A1 - Cassidy, Wiliam D.
T1 - Diamond growth rates and quality: dependence on gas phase cpmposition / William D. Cassidy [...], Hans-Jurgen Hagemann
JF - Diamond, SiC and nitride wide bandgap semiconductors : symposium held April 4 - 8, 1994, San Francisco, California, U.S.A. / ed.: Calvin H. Carter, Jr. ....
Y1 - 1994
SN - 1-55899-239-1
N1 - Materials Research Society symposium proceedings ; 339
SP - 285
EP - 291
CY - Pittsburgh, Penn. ,
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
A1 - Geittner, P.
T1 - PCVD hybrid technology for single mode fibres. Hagemann, H. J.; Geittner, P.
JF - Proceedings : papers presented at: the 8th Annual European Fibre Optic Communications and Local Area Networks Exposition
Y1 - 1990
N1 - EFOC LAN <8, 1990, München>
SP - 67
EP - 72
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
A1 - Geittner, P.
A1 - Leers, D.
T1 - Intrinsic scattering and absorption losses of Ge- and F-doped optical fibres prepared by PCVD. Geittner, P.; Hagemann, H. J. ; Leers, D.
JF - Electronics letters : an intern. publication / The Institution of Electrical Engineers. 25 (1989), H. 7
Y1 - 1989
SN - 0013-5194
SP - 436
EP - 437
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
A1 - Geittner, P.
A1 - Lydtin, H.
A1 - Warnier, J.
T1 - Hybrid technology for large SM-fiber preforms. Geittner, P.; Hagemann, H. J.; Lydtin, H.; Warnier, J.
JF - Journal of Lightwave Technology (J-LT) / Institute of Electrical and Electronics Engineers (IEEE). 6 (1988), H. 10
Y1 - 1988
SN - 0733-8724
SP - 1451
EP - 1454
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
A1 - Geittner, P.
A1 - Warnier, J.
A1 - Weling, F.
T1 - Reduction of geometric taper losses in the PCVD process. Geittner, P.; Hagemann, H. J.; Warnier, J.; Weling, F.; Wilson, H.
JF - Electronics letters : an intern. publication / The Institution of Electrical Engineers. 21 (1985), H. 13
Y1 - 1985
SN - 0013-5194
SP - 870
EP - 871
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
A1 - Geittner, P.
A1 - Warnier, J.
A1 - Wilson, H.
T1 - PCVD at high deposition rates. Geittner, P.; Hagemann, H. J.; Warnier, J.; Wilson, H.
JF - Journal of Lightwave Technology (J-LT) / Institute of Electrical and Electronics Engineers (IEEE). 4 (1986), H. 7
Y1 - 1986
SN - 0733-8724
SP - 818
EP - 822
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
A1 - Gudat, W.
A1 - Kunz, C.
T1 - Photoabsorption of alloys of Al with transition metals V, Fe, Ni and Cu and Pr near the Al L₂,₃-edge
JF - Solid State Communications
N2 - The onset of Al 2p transitions of VAl₃, FeAl, NiAl, NiAl₃, CuAl₂, PrAl₂ and the disordered alloys V-Al (16 at % Al, 28%, 41%), Fe-Al (11%) is shifted up to 1.1 eV. New pronounced structure develops close to the onset which for NiAl agrees with a density of states calculation by Connolly and Johnson.
Y1 - 1974
SN - 0038-1098
U6 - http://dx.doi.org/10.1016/0038-1098(74)91165-X
VL - 15
IS - 3
SP - 655
EP - 658
PB - Elsevier
CY - Amsterdam
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
A1 - Gudat, W.
A1 - Kunz, C.
T1 - Optical constants from the far infrared to the X-ray region: Mg, Al, Cu, Ag, Au, Bi, C, and Al₂O₃
JF - Journal of the Optical Society of America (JOSA)
Y1 - 1975
SN - 0030-3941
U6 - http://dx.doi.org/10.1364/JOSA.65.000742
VL - 65
IS - 6
SP - 742
EP - 744
PB - Optical Society of America
CY - New York
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
A1 - Gudat, W.
A1 - Kunz, C.
T1 - Photoabsorption coefficient of alloys of Al with transition metals V, Fe, Ni and Cu and Pr from 30 to 150 eV photon energy
JF - Physica status solidi b
N2 - The absorption coefficient of VAI3, FeAI, NiAI, NiAl2, CuAI2, PrAl2, and of disordered V–AI (16 at% AI, 28%, 41%) and Fe–AI (11%) alloys has been measured in the region of the M₂,₃ absorption of the transition metals and the Labsorption of AI. The strong changes of the AI spectrum in the region of the 100 eV maximum upon alloying are explained as another evidence of the EXAFS (extended X-ray absorption fine structure) nature of these structures. The broad, prominent absorption peaks from the 3p excitations in V and Fe and from the 4d excitations in Pr are influenced only little on allyoing and thus appear to be of atomic origin. The fine structure at the onset of the Pr 4d transitions is identical in the metal and the alloy but differs from that of Pr oxide. The only M₂,₃ edge which is detectably shifted is that of Ni (up to 2.1 eV), whereas the onset of the AI L₂,₃ edge is shifted in all the alloys (up to 1.1 eV). The shifts are interpreted in accordance with X-ray fluorescence and nuclear resonance measurements as changes of the density of states in the valence band of the alloys.
Y1 - 1976
SN - 0031-8957
U6 - http://dx.doi.org/10.1002/pssb.2220740211
N1 - weitere ISSN 0370-1972
VL - 74
IS - 2
SP - 507
EP - 521
PB - Wiley-VCH
CY - Berlin
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
A1 - Hennings, D.
T1 - Reversible Weight change of acceptor-doped BaTiO3. Hagemann, H. J.; Hennings, D.
JF - Journal of the American Ceramic Society. 64 (1981)
Y1 - 1981
SN - 0002-7820
SP - 590
EP - 594
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
A1 - Hennings, D.
A1 - Wernicke, R.
T1 - Ceramic multilayer capacitors. Hagemann, H. J.; Hennings, D.; Wernicke, R.
JF - Philips' technical review / Philips' Gloeilampenfabrieken. Philips' Gloeilampenfabrieken . 41 (1984)
Y1 - 1984
SN - 0031-7926
SP - 89
EP - 98
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
A1 - Hero, A.
A1 - Gonser, U.
T1 - The valence change of Fe in BaTiO3 studied by Mößbauer effect and gravimetry. Hagemann, H. J.; Hero, A.; Gonser, U.
JF - Physica Status Solidi (A) - Applied Research. 61 (1980)
Y1 - 1980
SN - 0031-8965
SP - 63
EP - 72
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
A1 - Ihrig, H.
T1 - Valence change and phase stability of 3d-doped BaTiO3 annealed in oxygen and hydrogen. Hagemann, H. J.; Ihrig, H.
JF - Physical Review B.. 20 (1979), H. 9
Y1 - 1979
SN - 1095-3795
SP - 3871
EP - 3878
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
A1 - Lade, H.
A1 - Warnier, J.
A1 - Wiechert, D. U.
T1 - The performance of Depressed-Cladding Single-Mode Fibres with Different b/a Ratios. Hagemann, H.-J.; Lade, H.; Warnier, J.; Wiechert, D. U.
JF - Journal of Lightwave Technology (J-LT) / Institute of Electrical and Electronics Engineers (IEEE). 9 (1991), H. 6
Y1 - 1991
SN - 0733-8724
SP - 689
EP - 694
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
A1 - O´Bryan, H. M.
T1 - Grain boundary and surface segragation of Ba-Ti-O-Phases in rutile. O´Bryan, H. M.; Hagemann, H. J.
JF - Journal of the American Ceramic Society. 70 (1987)
Y1 - 1987
SN - 0002-7820
SP - 274
EP - 278
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
A1 - Stumpe, R.
A1 - Wagner, D.
A1 - Bäuerle, D.
T1 - The influence of contact effects on the dielectric behavior of diffuse phase transitions. Stumpe, R.; Wagner, D.; Bäuerle, D.; Hagemann, H. J.
JF - Ferroelectrics : the international journal devoted to the theoretical, experimental, and applied aspects of ferroelectrics and related materials / Letters section. 4 (1985)
Y1 - 1985
SN - 0731-5171
SP - 143
EP - 147
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
A1 - Ungelenk, J.
A1 - Wiechert, D. U.
T1 - Optical time domain reflectometry (OTDR) of diameter modulations in single-mode fibers. Hagemann, H. J.; Ungelenk, J.; Wiechert, D. U.
JF - Journal of Lightwave Technology (J-LT) / Institute of Electrical and Electronics Engineers (IEEE). 8 (1990), H. 11
Y1 - 1990
SN - 0733-8724
SP - 1641
EP - 1645
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
A1 - Wiechert, D. U.
T1 - Measurements and calculations of the LP01 intensity of SM fibres far off the core. Hagemann, H.-J.; Wiechert, D. U.
JF - Journal of Lightwave Technology (J-LT) / Institute of Electrical and Electronics Engineers (IEEE). 10 (1992), H. 4
Y1 - 1992
SN - 0733-8724
SP - 407
EP - 412
ER -