TY  - JOUR
A1  - Kämper, Klaus-Peter
T1  - Education and Training in MST. Kämper, K.-P.; Picard, A.; Brill, M.; Cassel, D.; Jentsch, A.; Merten, S.; Rollwa, M.
JF  - Mst-News (2003)
Y1  - 2003
SN  - 0948-3128
SP  - 35
ER  - 
TY  - JOUR
A1  - Weigand, Christoph
T1  - Economically Optimal Inspection Policy with Geometrical Adaption
JF  - Journal of Applied Statistics. 30 (2003), H. 5
Y1  - 2003
SN  - 0266-4763
N1  - weitere ISSN 1360-0532 (E)
SP  - 555
EP  - 569
ER  - 
TY  - JOUR
A1  - Keusgen, M.
A1  - Jünger, M.
A1  - Krest, I.
A1  - Schöning, Michael Josef
T1  - Development of a biosensor specific for cysteine sulfoxides
JF  - Biosensors & Bioelectronics. 18 (2003), H. 5-6
Y1  - 2003
SN  - 0956-5663
SP  - 805
EP  - 812
ER  - 
TY  - JOUR
A1  - Grap, Rolf Dietmar
T1  - Determining manpower requirements in a spinning mill
JF  - Chemical fibers international : CFI ; fiber polymers, fibers, texturing, and spunbonds (2003)
Y1  - 2003
SN  - 0340-3343
SP  - 455
EP  - 458
ER  - 
TY  - JOUR
A1  - Heinrichs, U.
A1  - Pietrzyk, U.
A1  - Ziemons, Karl
T1  - Design optimization of the PMT-ClearPET prototypes based on simulation studies with GEANT3
JF  - 2002 IEEE Nuclear Science Symposium Conference Record, Vol. 3
N2  - Within the Crystal Clear Collaboration four centres are developing 2nd generation high performance small animal PET scanners for different kinds of animals and medical applications. The first prototypes are PMT-based systems including depth of interaction (DOI) detection by using a phoswich layer of LSO and LuYAP. The aim of these simulation studies is to optimize sensitivity and spatial resolution of given designs, which vary in FOVs caused by different detector configurations (ring/octagon) and sizes. For this purpose the simulation tool GEANT3 (CERN) was used. The simulations have shown that all PMT designs with one-to-one coupling of crystals have a very nonlinear axial sensitivity profile. By shifting every other PMT 1/4 of a PMT length in axial direction the sampling of the FOVs became more homogeneous. At an energy threshold of 350keV the regression coefficient increases from 0.818 for the non-shifted to 0.993 for the shifted design. Simulations of a point source centred in the FOV (threshold: 350keV) resulted in sensitivities of 4.2% for a 4×20PMT (LSO/LuYAP a 10mm) and 3.8% for a 4×16PMT (LSO/LuYAP a 8mm) ring design. The 3D-MLEM reconstruction of a point source shows the enormous improvement of resolution using a crystal double layer with DOI (3.1mm at 40mm from CFOV) instead of a 20mm single layer (11.9mm).
Y1  - 2003
SN  - 1082-3654
SP  - 682
EP  - 686
ER  - 
TY  - JOUR
A1  - Heinrichs, U.
A1  - Pietrzyk, U.
A1  - Ziemons, Karl
T1  - Design optimization of the PMT-ClearPET prototypes based on simulation studies with GEANT3
JF  - IEEE Transactions on Nuclear Science
N2  - Within the Crystal Clear Collaboration (CCC), four centers are developing second generation high performance small animal positron emission tomography (PET) scanners for different kinds of animals and medical applications. The first prototypes are photomultiplier tube (PMT)-based systems including depth of interaction (DOI) detection by using a phoswich layer of lutetium oxyorthosilicate (LSO) and lutetium yttrium aluminum perovskite (LuYAP). The aim of these simulation studies is to optimize sensitivity and spatial resolution of given designs, which vary in fields of view (FOVs) caused by different detector configurations (ring/octagon) and sizes. For this purpose the simulation tool GEANT3 (CERN, Geneva, Switzerland) was used.
Y1  - 2003
SN  - 0018-9499
VL  - 50
IS  - 5
SP  - 1428
EP  - 1432
ER  - 
TY  - JOUR
A1  - Staat, Manfred
A1  - Schwartz, M.
A1  - Lang, H.
A1  - Wirtz, K.
A1  - Heitzer, M.
T1  - Design by Analysis of Pressure Components by non-linear Optimization
JF  - The 10th International Conference on Pressure Vessel Technology, July 7-10, 2003, Vienna, Austria, Proceedings ICPVT-10 / Zeman, J. L. [ed]
Y1  - 2003
SN  - 3950152814
SP  - 59
EP  - 65
PB  - ÖGS, Österreichische Gesellschaft für Schweißtechnik
CY  - Wien
ER  - 
TY  - JOUR
A1  - Hoffschmidt, Bernhard
A1  - Fend, Thomas
A1  - Jorgensen, Gary
A1  - Küster, Harald
T1  - Comparative assessment of solar concentrator materials / Fend, Thomas ; Hoffschmidt, Bernhard ; Jorgensen, Gary ; Küster, Harald ; Krüger, Dirk ; Pitz-Paal, Robert ; Riebrock, Peter ; Riffelmann, Klaus-Jürgen
JF  - Solar energy. 74 (2003), H. 2
Y1  - 2003
SN  - 0038-092X
SP  - 149
EP  - 155
ER  - 
TY  - JOUR
A1  - Poghossian, Arshak
A1  - Berndsen, Lars
A1  - Schöning, Michael Josef
T1  - Chemical sensor as physical sensor: ISFET-based flowvelocity, flow-direction and diffusion-coefficient sensor
JF  - Sensors and Actuators B. 95 (2003), H. 1-3
Y1  - 2003
SN  - 0925-4005
SP  - 384
EP  - 390
ER  - 
TY  - JOUR
A1  - Palmer, J. W.
A1  - Lindemann, Markus
T1  - Business models and market mechanisms : evaluating efficiency in consumer electronic markets
JF  - Data base and advanced information systems. Bd. 34 (2003), H. 2
Y1  - 2003
SN  - 0105-9912
SP  - 23
EP  - 38
ER  -