@article{Raatschen2003, author = {Raatschen, Hans-J{\"u}rgen}, title = {Ingenieurstudium Hundert Jahre : von der K{\"o}niglichen H{\"o}heren Maschinenbauschule Aachen zu den Ingenieurfachbereichen der Fachhochschule}, series = {Fachblatt}, volume = {2003}, journal = {Fachblatt}, number = {1}, organization = {FH Aachen, University of Applied Sciences}, pages = {28 -- 29}, year = {2003}, language = {de} } @article{Fabo2003, author = {Fabo, Sabine}, title = {Das Museum lebt? Der Diskurs der Vernetzung im virtuellen Kunstraum}, series = {Zeitenblicke}, volume = {2(2003)}, journal = {Zeitenblicke}, number = {1}, year = {2003}, abstract = {Kunstwerke sowie ihre Pr{\"a}sentation und Vermittlung werden zunehmend von digitalen Technologien unterst{\"u}tzt. Virtuelle Ausstellungen, Internet-Projekte und komplexe Datenarchive stellen das Kunstwerk in einen medialen Kontext, der weit {\"u}ber das Moment einer technischen Reproduzierbarkeit hinausgeht. Das allgegenw{\"a}rtige Konzept der Vernetzung dynamisiert Kunst, ihre Rezipienten und Ausstellungsorte. Die Beziehungen zwischen diesen Feldern werden mit Hilfe physiologischer Metaphern definiert und visualisiert. Fr{\"u}here Speicher und Archive geraten in einen prozessualen Sog, in dem alles fluktuiert, sich kurzweilig verkn{\"u}pft, aufl{\"o}st und in permanente Dialoge mit seiner Umgebung tritt - das virtuelle Museum ger{\"a}t in aktuellen Standortbestimmungen in die definitorische N{\"a}he des K{\"u}nstlichen Lebens.}, subject = {Elektronische Kunst}, language = {de} } @article{ThustSchoeningMuchandanietal.2003, author = {Thust, M. and Sch{\"o}ning, Michael Josef and Muchandani, A. and Wang, J. and Arzdorf, Michael and Mulchandani, P. and Chen, W.}, title = {Feldeffekt-Enzymsensor zur Detektion von Pestiziden}, series = {Sensoren f{\"u}r zuk{\"u}nftige Hochtechnologien und Neuentwicklungen f{\"u}r die Verfahrenstechnik / 6. Dresdner Sensor-Symposium, 8. - 10. Dezember 2003, Dresden. J{\"o}rg Peter Baselt; Gerald Gerlach (Hg.)}, journal = {Sensoren f{\"u}r zuk{\"u}nftige Hochtechnologien und Neuentwicklungen f{\"u}r die Verfahrenstechnik / 6. Dresdner Sensor-Symposium, 8. - 10. Dezember 2003, Dresden. J{\"o}rg Peter Baselt; Gerald Gerlach (Hg.)}, publisher = {w.e.b.-Univ.-Verl.}, address = {Dresden}, isbn = {3-935712-92-8}, pages = {125 -- 128}, year = {2003}, language = {de} } @article{SchoeningArzdorfMulchandanietal.2003, author = {Sch{\"o}ning, Michael Josef and Arzdorf, Michael and Mulchandani, P. and Chen, W. and Mulchandani, A.}, title = {Towards a capacitive enzyme sensor for direct determination of organophosphorus pesticides: Fundamentals studies and aspects of development}, series = {Sensors. 3 (2003), H. 6}, journal = {Sensors. 3 (2003), H. 6}, isbn = {1424-8220}, pages = {119 -- 127}, year = {2003}, language = {en} } @article{SchoeningArzdorfMulchandanietal.2003, author = {Sch{\"o}ning, Michael Josef and Arzdorf, Michael and Mulchandani, P. and Chen, W. and Mulchandani, A.}, title = {A capacitive field-effect sensor for the direct determination of organophosphorus pesticides}, series = {Sensors and Actuators B. 91 (2003), H. 1-3}, journal = {Sensors and Actuators B. 91 (2003), H. 1-3}, isbn = {0925-4005}, pages = {92 -- 97}, year = {2003}, language = {en} } @article{SchoeningPoghossianSchultze2003, author = {Sch{\"o}ning, Michael Josef and Poghossian, Arshak and Schultze, Joachim W.}, title = {Measuring seven parameters by two ISFET modules in a microcell set-up}, series = {Int. Journal of Computational Engineering Science. 4 (2003), H. 2}, journal = {Int. Journal of Computational Engineering Science. 4 (2003), H. 2}, isbn = {1465-8763}, pages = {257 -- 260}, year = {2003}, language = {en} } @article{Weigand2003, author = {Weigand, Christoph}, title = {Technically Optimal Inspection Policy with Arithmetical Adaption}, series = {IMA Journal of Management Mathematics. 14 (2003), H. 4}, journal = {IMA Journal of Management Mathematics. 14 (2003), H. 4}, isbn = {1471-678X}, pages = {357 -- 371}, year = {2003}, language = {en} } @article{GoettscheDelahayeGabryschetal.2003, author = {G{\"o}ttsche, Joachim and Delahaye, A. and Gabrysch, K. and Schwarzer, Klemens}, title = {Solar-Campus J{\"u}lich - Nutzung solarer Gewinne in Geb{\"a}uden}, series = {13. Symposium Thermische Solarenergie : 14. bis 16. Mai 2003, Kloster Banz / [Wiss. Gesamtleitung: Hans M{\"u}ller-Steinhagen]. Otti-Energie-Kolleg}, journal = {13. Symposium Thermische Solarenergie : 14. bis 16. Mai 2003, Kloster Banz / [Wiss. Gesamtleitung: Hans M{\"u}ller-Steinhagen]. Otti-Energie-Kolleg}, publisher = {Ostbayerisches Technologie-Transfer-Inst., OTTI}, address = {Regensburg}, isbn = {3-934681-26-3}, pages = {362 -- 367}, year = {2003}, language = {de} } @article{FerreinFritzLakemeyer2003, author = {Ferrein, Alexander and Fritz, Christian and Lakemeyer, Gerhard}, title = {Extending DTGOLOG with Options / Ferrein, Alexander ; Fritz, Christian ; Lakemeyer, Gerhard}, series = {IJCAI-03, Proceedings of the Eighteenth International Joint Conference on Artificial Intelligence, Acapulco, Mexico, August 9-15, 2003}, journal = {IJCAI-03, Proceedings of the Eighteenth International Joint Conference on Artificial Intelligence, Acapulco, Mexico, August 9-15, 2003}, pages = {1391 -- 1393}, year = {2003}, language = {en} } @article{EnningZambouAbel2003, author = {Enning, Manfred and Zambou, Nathan and Abel, Dirk}, title = {L{\"a}ngsdynamikregelung eines Fahrzeugkonvois mit Hilfe der Modellgest{\"u}tzten Pr{\"a}diktiven Regelung / Zambou, N. ; Enning, M. ; Abel, D.}, series = {Telematik 2003 : Tagung Siegen, 17. und 18. Juni 2003 / VDI-VDE-Gesellschaft Mess- und Automatisierungstechnik}, journal = {Telematik 2003 : Tagung Siegen, 17. und 18. Juni 2003 / VDI-VDE-Gesellschaft Mess- und Automatisierungstechnik}, publisher = {VDI-Verl.}, address = {D{\"u}sseldorf}, isbn = {3-18-091785-7}, pages = {12 S.}, year = {2003}, language = {de} } @article{GrossBergerGross2003, author = {Groß, Rolf Fritz and Berger, J{\"o}rg and Groß, H.}, title = {Geb{\"a}udeautomation - Betriebsdatenerfassung und Geb{\"a}udeleittechnik im Klartext}, series = {HLH. Heizung, L{\"u}ftung/Klima, Haustechnik}, volume = {54}, journal = {HLH. Heizung, L{\"u}ftung/Klima, Haustechnik}, number = {2}, publisher = {Springer}, address = {D{\"u}sseldorf}, issn = {1436-5103}, pages = {81}, year = {2003}, language = {de} } @article{BaroudWuBohneretal.2003, author = {Baroud, Gamal and Wu, J.Z. and Bohner, M and Sponagel, Stefan and Steffen, T.}, title = {How to determine the permeability for cement infiltration into osteoporotic cancellous bone}, series = {Medical Engineering \& Physics. 25 (2003), H. 4}, journal = {Medical Engineering \& Physics. 25 (2003), H. 4}, issn = {1350-4533}, pages = {283 -- 288}, year = {2003}, abstract = {Cement augmentation is an emerging surgical procedure in which bone cement is used to infiltrate and reinforce osteoporotic vertebrae. Although this infiltration procedure has been widely applied, it is performed empirically and little is known about the flow characteristics of cement during the injection process. We present a theoretical and experimental approach to investigate the intertrabecular bone permeability during the infiltration procedure. The cement permeability was considered to be dependent on time, bone porosity, and cement viscosity in our analysis. In order to determine the time-dependent permeability, ten cancellous bone cores were harvested from osteoporotic vertebrae, infiltrated with acrylic cement at a constant flow rate, and the pressure drop across the cores during the infiltration was measured. The viscosity dependence of the permeability was determined based on published experimental data. The theoretical model for the permeability as a function of bone porosity and time was then fit to the testing data. Our findings suggest that the intertrabecular bone permeability depends strongly on time. For instance, the initial permeability (60.89 mm4/N.s) reduced to approximately 63\% of its original value within 18 seconds. This study is the first to analyze cement flow through osteoporotic bone. The theoretical and experimental models provided in this paper are generic. Thus, they can be used to systematically study and optimize the infiltration process for clinical practice.}, subject = {Osteoporose}, language = {en} } @article{HeinrichsPietrzykZiemons2003, author = {Heinrichs, U. and Pietrzyk, Uwe and Ziemons, Karl}, title = {Design optimization of the PMT-ClearPET prototypes based on simulation studies with GEANT3}, series = {IEEE Transactions on Nuclear Science}, volume = {50}, journal = {IEEE Transactions on Nuclear Science}, number = {5}, isbn = {0018-9499}, pages = {1428 -- 1432}, year = {2003}, abstract = {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.}, language = {en} } @article{HeinrichsPietrzykZiemons2003, author = {Heinrichs, U. and Pietrzyk, Uwe and Ziemons, Karl}, title = {Design optimization of the PMT-ClearPET prototypes based on simulation studies with GEANT3}, series = {2002 IEEE Nuclear Science Symposium Conference Record, Vol. 3}, journal = {2002 IEEE Nuclear Science Symposium Conference Record, Vol. 3}, issn = {1082-3654}, pages = {682 -- 686}, year = {2003}, abstract = {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).}, language = {en} }