@incollection{DigelMansurovBiisenbaevetal.2012, author = {Digel, Ilya and Mansurov, Zulkhair and Biisenbaev, Makhmut and Savitskaya, Irina and Kistaubaeva, Aida and Akimbekov, Nuraly and Zhubanova, Azhar}, title = {Heterogeneous Composites on the Basis of Microbial Cells and Nanostructured Carbonized Sorbents}, series = {Composites and Their Applications}, booktitle = {Composites and Their Applications}, editor = {Hu, Ning}, publisher = {Intech}, address = {London}, isbn = {978-953-51-0706-4}, doi = {10.5772/47796}, pages = {249 -- 272}, year = {2012}, abstract = {The fact that microorganisms prefer to grow on liquid/solid phase surfaces rather than in the surrounding aqueous phase was noticed long time ago [1]. Virtually any surface - animal, mineral, or vegetable - is a subject for microbial colonization and subsequent biofilm formation. It would be adequate to name just a few notorious examples on microbial colonization of contact lenses, ship hulls, petroleum pipelines, rocks in streams and all kinds of biomedical implants. The propensity of microorganisms to become surface-bound is so profound and ubiquitous that it vindicates the advantages for attached forms over their free-ranging counterparts [2]. Indeed, from ecological and evolutionary standpoints, for many microorganisms the surface-bound state means dwelling in nutritionally favorable, non-hostile environments [3]. Therefore, in most of natural and artificial ecosystems surface-associated microorganisms vastly outnumber organisms in suspension and often organize into complex communities with features that differ dramatically from those of free cells [4].}, language = {en} } @inproceedings{DachwaldMikuckiTulaczyketal.2012, author = {Dachwald, Bernd and Mikucki, Jill A. and Tulaczyk, Slawek and Digel, Ilya and Feldmann, Marco and Espe, Clemens and Plescher, Engelbert and Xu, Changsheng}, title = {IceMole - a maneuverable probe for clean in-situ analysis and sampling of subsurface ice and subglacial aquatic ecosystems : extended abstract / SCAR Open Science Conference 2012, Session 29: Advancing Clean Technologies for Exploration of Glacial Aquatic Ecosystems}, year = {2012}, abstract = {The "IceMole" is a novel maneuverable subsurface ice probe for clean in-situ analysis and sampling of subsurface ice and subglacial water/brine. It is developed and build at FH Aachen University of Applied Sciences' Astronautical Laboratory. A first prototype was successfully tested on the Swiss Morteratsch glacier in 2010. Clean sampling is achieved with a hollow ice screw (as it is used in mountaineering) at the tip of the probe. Maneuverability is achieved with a differentially heated melting head. Funded by the German Space Agency (DLR), a consortium led by FH Aachen currently develops a much more advanced IceMole probe, which includes a sophisticated system for obstacle avoidance, target detection, and navigation in the ice. We intend to use this probe for taking clean samples of subglacial brine at the Blood Falls (McMurdo Dry Valleys, East Antarctica) for chemical and microbiological analysis. In our conference contribution, we 1) describe the IceMole design, 2) report the results of the field tests of the first prototype on the Morteratsch glacier, 3) discuss the probe's potential for the clean in-situ analysis and sampling of subsurface ice and subglacial liquids, and 4) outline the way ahead in the development of this technology.}, subject = {Eisschicht}, language = {en} } @inproceedings{DachwaldFeldmannEspeetal.2012, author = {Dachwald, Bernd and Feldmann, Marco and Espe, Clemens and Plescher, Engelbert and Konstantinidis, K. and Forstner, R.}, title = {Enceladus explorer - A maneuverable subsurface probe for autonomous navigation through deep ice}, series = {63rd International Astronautical Congress 2012, IAC 2012; Naples; Italy; 1 October 2012 through 5 October 2012. (Proceedings of the International Astronautical Congress, IAC ; 3)}, booktitle = {63rd International Astronautical Congress 2012, IAC 2012; Naples; Italy; 1 October 2012 through 5 October 2012. (Proceedings of the International Astronautical Congress, IAC ; 3)}, publisher = {Curran}, address = {Red Hook, NY}, organization = {International Astronautical Congress <63, 2012, Napoli>}, isbn = {978-1-62276-979-7}, pages = {1756 -- 1766}, year = {2012}, language = {en} } @inproceedings{CzarneckiWinkelmannSpiliopoulou2012, author = {Czarnecki, Christian and Winkelmann, Axel and Spiliopoulou, Myra}, title = {Transformation in Telecommunication - Analyse und Clustering von Real-life Projekten}, series = {Multikonferenz Wirtschaftsinformatik 2012}, booktitle = {Multikonferenz Wirtschaftsinformatik 2012}, editor = {Mattfeld, Dirk Christian and Robra-Bissantz, Susanne}, publisher = {Gito}, address = {Berlin}, isbn = {9783942183635}, pages = {985 -- 998}, year = {2012}, abstract = {Die Ver{\"a}nderungen des Telekommunikationsmarktes haben in der Praxis zu einer Vielzahl von Transformationsprojekten gef{\"u}hrt. Was geh{\"o}rt aber zu einem "Transformationsprojekt", welche Prozesse und Systeme werden ver{\"a}ndert? Zur Beantwortung dieser Frage haben wir 184 Berichte zu Projekten analysiert, die als "Transformationsprojekte" bezeichnet waren. F{\"u}r die Analyse haben wir einen Kodierungsrahmen konzipiert und anhand dessen die Berichte mit einem hierarchischen Clustering-Verfahren in Themen gruppiert. Die Ergebnisse liefern Hinweise {\"u}ber die in der Praxis gesetzten Schwerpunkte und Priorit{\"a}ten. Sie k{\"o}nnen somit als Unterst{\"u}tzung f{\"u}r Unternehmen dienen, die ein Transformationsprojekt planen. Sie weisen zudem darauf hin, in welchen Bereichen eines Unternehmens Unterst{\"u}tzung durch wissenschaftlich erprobte Werkzeuge und Modelle n{\"o}tig ist.}, language = {de} } @article{CzarneckiSpiliopoulou2012, author = {Czarnecki, Christian and Spiliopoulou, Myra}, title = {A holistic framework for the implementation of a next generation network}, series = {International Journal of Business Information Systems}, volume = {9}, journal = {International Journal of Business Information Systems}, number = {4}, publisher = {Inderscience Enterprises}, address = {Olney, Bucks}, issn = {1746-0972}, doi = {10.1504/IJBIS.2012.046291}, pages = {385 -- 401}, year = {2012}, abstract = {As the potential of a next generation network (NGN) is recognised, telecommunication companies consider switching to it. Although the implementation of an NGN seems to be merely a modification of the network infrastructure, it may trigger or require changes in the whole company, because it builds upon the separation between service and transport, a flexible bundling of services to products and the streamlining of the IT infrastructure. We propose a holistic framework, structured into the layers 'strategy', 'processes' and 'information systems' and incorporate into each layer all concepts necessary for the implementation of an NGN, as well as the alignment of these concepts. As a first proof-of-concept for our framework we have performed a case study on the introduction of NGN in a large telecommunication company; we show that our framework captures all topics that are affected by an NGN implementation.}, language = {en} } @article{ChwallekEngelenOswaldetal.2012, author = {Chwallek, Constanze and Engelen, Andreas and Oswald, Monika and Brettel, Malte}, title = {Die Wir­kung des F{\"u}h­rungs­ver­hal­tens des Top-Ma­nage­ments auf die un­ter­neh­me­ri­sche Ori­en­tie­rung - ein 5-L{\"a}n­der-Ver­gleich}, series = {Zfbf : Schmalenbachs Zeitschrift f{\"u}r betriebswirtschaftliche Forschung}, journal = {Zfbf : Schmalenbachs Zeitschrift f{\"u}r betriebswirtschaftliche Forschung}, number = {2}, publisher = {Springer Fachmedien}, address = {Wiesbaden}, issn = {0341-2687}, pages = {138 -- 165}, year = {2012}, language = {de} } @article{ChludekTran2012, author = {Chludek, Astrid and Tran, Duc Hung}, title = {Der Reformvorschlag des IAS 12 gem. ED/2009/2 - Ein Pl{\"a}doyer f{\"u}r die Einf{\"u}hrung der valuation allowance}, series = {KoR Zeitschrift f{\"u}r kapitalmarktorientierte Rechnungslegung}, journal = {KoR Zeitschrift f{\"u}r kapitalmarktorientierte Rechnungslegung}, number = {1}, publisher = {Fachmedien Otto Schmidt}, address = {D{\"u}sseldorf}, issn = {1617-8084}, pages = {4 -- 8}, year = {2012}, language = {de} } @phdthesis{Buedenbender2012, author = {B{\"u}denbender, Martin}, title = {Entflechtungskonzepte f{\"u}r Strom{\"u}bertragungsnetze : ein {\"o}konomischer Vergleich}, series = {M{\"u}nstersche Schriften zur Kooperation ; Bd. 101}, journal = {M{\"u}nstersche Schriften zur Kooperation ; Bd. 101}, publisher = {Shaker}, address = {D{\"u}ren}, isbn = {978-3-8440-1460-0}, pages = {XVII, 401 S. : Ill., graph. Darst.}, year = {2012}, abstract = {Netzsektoren und deren ad{\"a}quate Regulierung sind ein sehr relevantes und aktuelles Thema. Dies gilt sowohl f{\"u}r die {\"o}konomische Theorie, die sich sehr intensiv damit auseinandersetzt und in den letzten Jahrzehnten zahlreiche neue Erkenntnisse gewonnen hat. Es gilt ebenso f{\"u}r die Politik, in der Regulierungsfragen kontrovers diskutiert werden und dies nicht nur unter {\"o}konomischen Gesichtspunkten. Es gilt selbstverst{\"a}ndlich f{\"u}r die regulierten Unternehmen selbst, deren T{\"a}tigkeit durch die staatlichen Regulierungsvorgaben markant beeinflusst wird. Nicht nur die konkreten Inhalte der Regulierungsregime sowie die verbleibenden Freiheitsgrade in der Ausgestaltung sind von Bedeutung, sondern ebenso die Umsetzung durch die Regulierungsbeh{\"o}rden. All dies gilt f{\"u}r den Strommarkt und seinen regulatorischen Hintergrund in besonderer Weise. Die Entflechtung der Strom{\"u}bertragungsnetze von der Stromproduktion und damit die Vorgaben f{\"u}r die Organisation der Wertsch{\"o}pfungsketten in den Elektrizit{\"a}tsunternehmen sind seit dem Beginn des europ{\"a}ischen Liberalisierungsprozesses der Stromm{\"a}rkte ein wichtiges und kontrovers diskutiertes Regulierungselement. Den Fokus bildet das vertikale Unbundling, das letztlich die Diskriminierung von Wettbewerbern durch Anbieter mit aggregierten Wertsch{\"o}pfungsketten verhindern soll, indem diese gezwungen werden, ihren "Netzteil" anders zu organisieren oder zu verkaufen. Den Mitgliedsstaaten blieben Freir{\"a}ume in der Ausgestaltung, die in Deutschland erst vor kurzem konkretisiert wurden, und die f{\"u}r die regulierten Unternehmen die Nutzung eines Wahlrechts beinhalten. Der wirtschaftspolitischen folgt nun eine unternehmerische Abw{\"a}gungsentscheidung.}, language = {de} } @article{Baehr2012, author = {B{\"a}hr, Brigitte}, title = {[Gert Hoepner] im Interview zum Thema ; Verpackungspolitik - mehr als H{\"u}lle}, series = {Packaging journal : Technologie, Logistik, Marketing, Produkte}, journal = {Packaging journal : Technologie, Logistik, Marketing, Produkte}, number = {5}, publisher = {Ella Verlag}, address = {H{\"u}rth}, issn = {1610-0336}, pages = {78 -- 80}, year = {2012}, language = {de} } @article{BaeckerRaueSchusseretal.2012, author = {B{\"a}cker, Matthias and Raue, Markus and Schusser, Sebastian and Jeitner, C. and Breuer, L. and Wagner, P. and Poghossian, Arshak and F{\"o}rster, Arnold and Mang, Thomas and Sch{\"o}ning, Michael Josef}, title = {Microfluidic chip with integrated microvalves based on temperature- and pH-responsive hydrogel thin films}, series = {Physica Status Solidi (a)}, volume = {209}, journal = {Physica Status Solidi (a)}, number = {5}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {1862-6319}, doi = {10.1002/pssa.201100763}, pages = {839 -- 845}, year = {2012}, abstract = {Two types of microvalves based on temperature-responsive poly(N-isopropylacrylamide) (PNIPAAm) and pH-responsive poly(sodium acrylate) (PSA) hydrogel films have been developed and tested. The PNIPAAm and PSA hydrogel films were prepared by means of in situ photopolymerization directly inside the fluidic channel of a microfluidic chip fabricated by combining Si and SU-8 technologies. The swelling/shrinking properties and height changes of the PNIPAAm and PSA films inside the fluidic channel were studied at temperatures of deionized water from 14 to 36 °C and different pH values (pH 3-12) of Titrisol buffer, respectively. Additionally, in separate experiments, the lower critical solution temperature (LCST) of the PNIPAAm hydrogel was investigated by means of a differential scanning calorimetry (DSC) and a surface plasmon resonance (SPR) method. Mass-flow measurements have shown the feasibility of the prepared hydrogel films to work as an on-chip integrated temperature- or pH-responsive microvalve capable to switch the flow channel on/off.}, language = {en} } @incollection{ButenwegRoeser2012, author = {Butenweg, Christoph and Roeser, W.}, title = {Erdbebenbemessung von Stahlbetontragwerken nach DIN EN 1998-1}, series = {Stahlbetonbau aktuell : Praxishandbuch}, booktitle = {Stahlbetonbau aktuell : Praxishandbuch}, publisher = {Beuth}, address = {Berlin}, isbn = {978-3-410-21932-3 (Print) ; 978-341-02193-3-0 (E-Book)}, pages = {A.1 -- A.43}, year = {2012}, language = {de} } @article{ButenwegHoltschoppen2012, author = {Butenweg, Christoph and Holtschoppen, Britta}, title = {Neuer VCI-Leitfaden f{\"u}r die erdbebensichere Auslegung von Industrieanlagen}, series = {Bauingenieur : die richtungsweisende Zeitschrift im Bauingenieurswesen ; offizielle Zeitschrift der VDI-Gesellschaft Bautechnik}, volume = {Band 87}, journal = {Bauingenieur : die richtungsweisende Zeitschrift im Bauingenieurswesen ; offizielle Zeitschrift der VDI-Gesellschaft Bautechnik}, publisher = {VDI Fachmedien}, address = {D{\"u}sseldorf}, issn = {1436-4867 (E-Journal); 0005-6650 (Print)}, pages = {S18}, year = {2012}, language = {de} } @article{ButenwegGellert2012, author = {Butenweg, Christoph and Gellert, Christoph}, title = {Integrale Geb{\"a}udeplanung am Beispiel eines Geschossbaus in Ziegelmauerwerk}, series = {Mauerwerk : European journal of masonry}, volume = {Volume 16}, journal = {Mauerwerk : European journal of masonry}, number = {5}, publisher = {Wiley}, address = {Weinheim}, issn = {1437-1022 (E-Journal); 1432-3427 (Print)}, doi = {10.1002/dama.201200550}, pages = {247 -- 254}, year = {2012}, abstract = {Moderne Mauerwerksbauten m{\"u}ssen nach heutigen Anforderungen architektonisch, statisch, energetisch sowie schall- und brandschutztechnisch optimal ausgelegt sein. Aufgrund der Komplexit{\"a}t und engen Verzahnung der einzelnen Anforderungen ist eine integrale Geb{\"a}udeplanung zur Erzielung einer qualitativ hochwertigen Bauwerksl{\"o}sung unbedingt notwendig. Diese erfordert von den Fachplanern vertieftes Spezialwissen in den verschiedenen Bereichen, um insbesondere die Schnittstellen und Bauwerksdetails korrekt zu planen und auszuf{\"u}hren. Der Beitrag stellt die integrale Geb{\"a}udeplanung am Beispiel eines Geschossbaus in Ziegelbauweise mit L{\"o}sungen f{\"u}r wesentliche Detailpunkte vor}, language = {de} } @article{ButenwegFehling2012, author = {Butenweg, Christoph and Fehling, Ekkehard}, title = {Hintergrund f{\"u}r die vereinfachten Regeln bei Mauerwerksgeb{\"a}uden im Erdbebenfall}, series = {Mauerwerk : European journal of masonry}, volume = {Volume 16}, journal = {Mauerwerk : European journal of masonry}, number = {Issue 3}, publisher = {Wiley}, address = {Weinheim}, issn = {1437-1022 (E-Journal); 1432-3427 (Print)}, doi = {10.1002/dama.201200537}, pages = {127 -- 137}, year = {2012}, abstract = {Bei der Ausarbeitung des nationalen Anwendungsdokumentes zur DIN EN 1998-1 waren die in der ENV-Fassung enthaltenen vereinfachten Regeln im Lichte aktueller Forschungsergebnisse zu {\"u}berpr{\"u}fen und zu {\"u}berarbeiten. Die gleiche Aufgabe stellte sich auch f{\"u}r die Neufassung der DIN 4149. In beiden F{\"a}llen sind neben konstruktiven Regeln f{\"u}r die Art und Anordnung der zur Geb{\"a}udeaussteifung heranzuziehenden W{\"a}nde im Grundriss Tabellen enthalten, die unter bestimmten Bedingungen den Entfall eines rechnerischen Nachweises der Tragw{\"a}nde im Erdbebenfall erm{\"o}glichen. Dies ist f{\"u}r Schwachbebengebiete, wie sie in Deutschland und anderen L{\"a}ndern Mitteleuropas anzutreffen sind, sinnvoll, um unn{\"o}tigen Rechenaufwand sowie Probleme mit der F{\"u}hrbarkeit von Nachweisen so weit wie m{\"o}glich auszuschalten. Im vorliegenden Beitrag werden die Hintergr{\"u}nde der vereinfachten Regeln diskutiert und die Ergebnisse der Anwendung mit verschiedenen Rechenverfahren verglichen und bewertet.}, language = {de} } @techreport{ButenwegDargelHoechstetal.2012, author = {Butenweg, Christoph and Dargel, H.-J. and H{\"o}chst, T. and Holtschoppen, B. and Schwarz, R. and Sippel, M.}, title = {Der Lastfall Erdbeben im Anlagenbau : Leitfaden : Entwurf, Bemessung und Konstruktion von Tragwerken und Komponenten in der chemischen Industrie in Anlehnung an die DIN EN 1998-1}, publisher = {Verband der Chemischen Industrie e.V.}, address = {Frankfurt}, pages = {20 S.}, year = {2012}, language = {de} } @inproceedings{Butenweg2012, author = {Butenweg, Christoph}, title = {Eurocode 8 : Erdbebenauslegung von Tragwerken}, series = {Eurocodes 2012 kompakt - Chancen nutzen : 36. Darmst{\"a}dter Massivbauseminar Zukunftsf{\"a}higes Planen und Bauen, 7. und 8. M{\"a}rz}, booktitle = {Eurocodes 2012 kompakt - Chancen nutzen : 36. Darmst{\"a}dter Massivbauseminar Zukunftsf{\"a}higes Planen und Bauen, 7. und 8. M{\"a}rz}, publisher = {Freunde des Inst. f{\"u}r Massivbau der TU}, address = {Darmstadt}, organization = {Darmst{\"a}dter Massivbauseminar <36, 2012>}, pages = {257 -- 272}, year = {2012}, language = {de} } @inproceedings{BungSunMeirelesetal.2012, author = {Bung, Daniel B. and Sun, Q. and Meireles, I. and Matos, J. and Viseu, T.}, title = {USBR type III stilling basin performance for steep stepped spillways}, series = {Hydraulic structures into the 21st century : 4th IAHR International Symposium on Hydraulic Structures : 9.-11.2.2012, Porto}, booktitle = {Hydraulic structures into the 21st century : 4th IAHR International Symposium on Hydraulic Structures : 9.-11.2.2012, Porto}, organization = {International Symposium on Hydraulic Structures <4, 2012, Porto>}, isbn = {978-989-8509-01-7}, pages = {Elektronisch publiziert}, year = {2012}, language = {en} } @inproceedings{Bung2012, author = {Bung, Daniel B.}, title = {Sensitivity of phase detection techniques in aerated chute flows to hydraulic design parameters}, series = {2nd European IAHR congress : 27. - 29. June 2012, M{\"u}nchen}, booktitle = {2nd European IAHR congress : 27. - 29. June 2012, M{\"u}nchen}, publisher = {Lehrstuhl u. Versuchsanst. f{\"u}r Wasserbau u. Wasserwirtschaft d. TU M{\"u}nchen}, address = {M{\"u}nchen}, organization = {International Association for Hydraulic Engineering and Research}, isbn = {978-3-943683-03-5}, pages = {Artikelkennnummer: B15}, year = {2012}, language = {en} } @article{BragardvanHoekDeDoncker2012, author = {Bragard, Michael and van Hoek, H. and De Doncker, R. W.}, title = {A major design step in IETO concept realization that allows overcurrent protection and pushes limits of switching performance}, series = {IEEE transactions on power electronics}, volume = {27}, journal = {IEEE transactions on power electronics}, number = {9}, publisher = {IEEE}, address = {New York}, issn = {0885-8993}, doi = {10.1109/TPEL.2012.2189136}, pages = {4163 -- 4171}, year = {2012}, abstract = {This paper presents the latest prototype of the integrated emitter turn-off thyristor concept, which potentially ranks among thyristor high-power devices like the gate turn-off thyristor and the integrated gate-commutated thyristor (IGCT). Due to modifications of the external driver stage and mechanical press-pack design optimization, this prototype allows for full device characterization. The turn-off capability was increased to 1600 A with an active silicon area of 823mm2 . This leads to a transient peak power of 672.1kW/cm² . Within this paper, measurements and concept assessment are presented and a comparison to state-of-the-art IGCT devices is provided.}, language = {en} } @phdthesis{Bragard2012, author = {Bragard, Michael}, title = {The integrated emitter turn-off thyristor : an innovative MOS-gated high-power device. - (Aachener Beitr{\"a}ge des ISEA ; 62)}, publisher = {Shaker}, address = {Aachen}, isbn = {978-3-8440-1152-4}, pages = {III, 164 S. : Ill., graph. Darst.}, year = {2012}, abstract = {This thesis introduces the Integrated Emitter Turn-Off (IETO) Thyristor as a new high-power device. Known state-of-the-art research activities like the Dual GCT, the ETO thyristor and the ICT were presented and critically reviewed. A comparison with commercialized solutions identifies the pros and cons of each type of device family. Based on this analysis, the IETO structure is proposed, covering most benefits of each device class. In particular the combination of a MOS-assisted turn-off with a thyristor-based device allows a voltage-controlled MOS switching and the low on-state voltage of the thyristors. The following synthesis of an IETO device stands on a three-dimensional field of optimization spanned by electric, mechanical and thermal aspects. From an electric point of view, the lowest possible parasitic inductance and resistance within the commutation path are optimization criteria. The mechanical construction has to withstand the required contact pressure of multiple kilo Newtons. Finally, thermal borders limit the maximum average current of the device. FEM simulations covering these three aspects are performed for several design proposals. An IETO prototype is constructed and measurements on various test benches attest thermal, mechanical and electric performance. A local decoupling of the external driver stage and the presspack housing is presented by a cable connection. This separation enables a thermal and mechanical independence, which is advantageous in terms of vibrations and thermal cycles including increased reliability. The electric pulse performance of the prototype device is a factor of 3.1 above today''s solutions. In single-pulse measurements, a current up to 1600 A was successfully turned off at 115°C with an active silicon area of 823 mm². One reason for this increased turn-off capability is the extremely low-inductive construction. Additional functionality of the IETO thyristor like over-current self-protection and defined short-circuit failure state are successfully verified.}, language = {en} }