@article{StreunBrandenburgBroekeletal.2004, author = {Streun, M. and Brandenburg, G. and Br{\"o}kel, M. and Fuss, L. and Larue, H. and Parl, C. and Zimmermann, E. and Ziemons, Karl and Halling, H.}, title = {The ClearPET data acquisition}, series = {2003 IEEE Nuclear Science Symposium Conference Record, Vol. 5}, journal = {2003 IEEE Nuclear Science Symposium Conference Record, Vol. 5}, issn = {1082-3654}, pages = {3097 -- 3100}, year = {2004}, abstract = {Within the Crystal Clear Collaboration a modular system for a small animal PET scanner (ClearPET™) has been developed. The modularity allows the assembly of scanners of different sizes and characteristics in order to fit the specific needs of the individual member institutions. Now a first demonstrator is being completed in Julich. The system performs depth of interaction detection by using a phoswich arrangement combining LSO and LuYAP scintillators which are coupled to multi-channel photomultipliers (PMTs). A free-running ADC digitizes the signal from the PMT and the complete scintillation pulses are sampled by an FPGA and sent with 20 MB/S to a PC for preprocessing. The pulse provides information about the gamma energy and the scintillator material which identifies the interaction layer. Furthermore, the exact pulse starting time is obtained from the sampled data. This is important as no hardware coincidence detection is implemented. All single events are recorded and coincidences are identified by software. An advantage of that is that the coincidence window and the dimensions of the field of view can be adjusted easily. The ClearPET™ demonstrator is equipped with 10240 crystals on 80 PMTs. This paper presents an overview of the data acquisition system.}, language = {en} } @article{ChristHollendungLarueetal.2004, author = {Christ, D. and Hollendung, A. and Larue, H. and Parl, C. and Streun, M. and Weber, S. and Ziemons, Karl and Halling, H.}, title = {Homogenization of the MultiChannel PM gain by inserting light attenuating masks}, series = {2003 IEEE Nuclear Science Symposium Conference Record, Vol. 4}, journal = {2003 IEEE Nuclear Science Symposium Conference Record, Vol. 4}, issn = {1082-3654}, pages = {2382 -- 2385}, year = {2004}, abstract = {MultiChannel Photomultipliers (PM), like the R7600-00-M64 or R5900-00-M64 from Hamamatsu, are often chosen as photodetectors in high-resolution positron emission tomography (PET). A major problem of this PM is the nonuniform channel gain. In order to solve this problem, light attenuating masks were created. The aim of the masks is a homogenization of the output of all 64 channels using different hole sizes at the channel positions. The hole area, which is individually defined for the different channels, is inversely proportional to the channel gain. The measurements by inserting light attenuating masks improved a homogenization to a ratio of 1:1.2.}, language = {en} } @article{SanderRoy2004, author = {Sander, Volker and Roy, Alain}, title = {GARA: A Uniform Quality of Service Architecture / Roy, Alain ; Sander, Volker}, series = {Grid resource management : state of the art and future trends / ed. by Jarek Nabrzyski; Jennifer M. Schopf; Jan W\&\#796;eglarz}, journal = {Grid resource management : state of the art and future trends / ed. by Jarek Nabrzyski; Jennifer M. Schopf; Jan W\&\#796;eglarz}, publisher = {Kluwer Academic Publ.}, address = {Boston}, isbn = {1-4020-7575-8}, pages = {377 -- 394}, year = {2004}, language = {en} } @article{SanderFidler2004, author = {Sander, Volker and Fidler, Markus}, title = {A parameter based admission control for differentiated services networks / Fidler, Markus ; Sander, Volker}, series = {Computer Networks. 44 (2004), H. 4}, journal = {Computer Networks. 44 (2004), H. 4}, isbn = {1389-1286}, pages = {463 -- 479}, year = {2004}, language = {en} } @article{SanderFosterFidleretal.2004, author = {Sander, Volker and Foster, Ian T. and Fidler, Markus and Roy, Alain}, title = {End-to-end quality of service for high-end applications / Foster, Ian T. ; Fidler, Markus ; Roy, Alain ; Sander, Volker ; Winkler, Linda}, series = {Computer Communications. 27 (2004), H. 14}, journal = {Computer Communications. 27 (2004), H. 14}, isbn = {0140-3664}, pages = {1375 -- 1388}, year = {2004}, language = {en} } @article{HillenFischer2004, author = {Hillen, Walter and Fischer, Felix}, title = {Farbanalyse von gebackenen oder frittierten Nahrungsmitteln und Vorhersage des Acrylamid-Wertes}, series = {10. Workshop Farbbildverarbeitung : Elektronische Ressource : 7.-8. Oktober 2004, Koblenz = 10th Workshop Color Image Processing / Detlev Droege ... Hrsg.}, journal = {10. Workshop Farbbildverarbeitung : Elektronische Ressource : 7.-8. Oktober 2004, Koblenz = 10th Workshop Color Image Processing / Detlev Droege ... Hrsg.}, publisher = {Der Andere Verl.}, address = {T{\"o}nning [u.a.]}, isbn = {389959245X}, pages = {133 -- 148}, year = {2004}, language = {de} } @article{WeberBhujuChandraetal.2004, author = {Weber, Hans-Joachim and Bhuju, S. and Chandra, S. and Mo, X.}, title = {Fabrication of biodegradable nanofibers for tubular scaffolds in regenerative medicine / Weber, H.-J. ; Bhuju, S. ; Chandra, S. ; Mo, X.}, series = {Biomedizinische Technik. 49 (2004), H. Erg.-Bd. 2, Teil 2}, journal = {Biomedizinische Technik. 49 (2004), H. Erg.-Bd. 2, Teil 2}, pages = {1016 -- 1017}, year = {2004}, language = {en} } @article{KraftNobisrathSalumaaetal.2004, author = {Kraft, Bodo and Nobisrath, Ulrich and Salumaa, Priit and Schultchen, Erhard}, title = {Fujaba based Tool Development for eHome Systems / Nobisrath, Ulrich ; Salumaa, Priit ; Schultchen, Erhard ; Kraft, Bodo}, series = {Electronic Notes in Theoretical Computer Science. 127 (2004), H. 1}, journal = {Electronic Notes in Theoretical Computer Science. 127 (2004), H. 1}, isbn = {1571-0661}, pages = {89 -- 99}, year = {2004}, language = {en} } @article{GrotendorstScottAubertFreconetal.2004, author = {Grotendorst, Johannes and Scott, Tony C. and Aubert-Fr{\´e}con, Monique and Hadinger, Gis{\`e}le}, title = {Asymptotically exact calculation of the exchange energies of one-active-electron diatomic ions with the surface integral method / Scott, Tony C. ; Aubert-Fr{\´e}con, Monique ; Hadinger, Gis{\`e}le ; Andrae, Dirk ; Grotendorst, Johannes ; Morgan Ill, John D.}, series = {Journal of Physics B: Atomic, Molecular and Optival Physics. 37 (2004), H. 22}, journal = {Journal of Physics B: Atomic, Molecular and Optival Physics. 37 (2004), H. 22}, isbn = {0953-4075}, pages = {4451 -- 4469}, year = {2004}, language = {en} } @article{GrotendorstKlessDickhausetal.2004, author = {Grotendorst, Johannes and Kless, A. and Dickhaus, T. and Meyer, W.}, title = {Data Mining in der pharmazeutischen Forschung und Entwicklung / Kless, A. ; Dickhaus, T. ; Meyer, W. ; Grotendorst, J.}, series = {LITUS - Laboratory IT User Service. 1 (2004)}, journal = {LITUS - Laboratory IT User Service. 1 (2004)}, pages = {20 -- 21}, year = {2004}, language = {en} }