@article{AbelBergweilerGerhard2006, author = {Abel, Markus and Bergweiler, Steffen and Gerhard, Reimund}, title = {Synchronization of organ pipes : experimental observations and modeling}, issn = {0001-4966}, doi = {10.1121/1.217044}, year = {2006}, abstract = {We report measurements on the synchronization properties of organ pipes. First, we investigate influence of an external acoustical signal from a loudspeaker on the sound of an organ pipe. Second, the mutual influence of two pipes with different pitch is analyzed. In analogy to the externally driven, or mutually coupled self-sustained oscillators, one observes a frequency locking, which can be explained by synchronization theory. Further, we measure the dependence of the frequency of the signals emitted by two mutually detuned pipes with varying distance between the pipes. The spectrum shows a broad '' hump '' structure, not found for coupled oscillators. This indicates a complex coupling of the two organ pipes leading to nonlinear beat phenomena.}, language = {en} } @article{AbelStojkovicBreuer2006, author = {Abel, Markus and Stojkovic, Dragan and Breuer, Michael}, title = {Nonlinear stochastic estimation of wall models for LES}, issn = {0142-727X}, doi = {10.1016/j.heatfluidflow.2005.10.011}, year = {2006}, abstract = {A key technology for large eddy simulation (LES) of complex flows is an appropriate wall modeling strategy. In this paper we apply for the first time a fully nonparametric procedure for the estimation of generalized additive models (GAM) by conditional statistics. As a database, we use DNS and wall-resolved LES data of plane channel flow for Reynolds numbers, Re = 2800, 4000 (DNS) and 10,935, 22,776 (LES). The statistical method applied is a quantitative tool for the identification of important model terms, allowing for an identification of some of the near-wall physics. The results are given as nonparametric functions which cannot be attained by other methods. We investigated a generalized model which includes Schumann's and Piomelli et al.'s model. A strong influence of the pressure gradient in the viscous sublayer is found; for larger wall distances the spanwise pressure gradient even dominates the tau(w,zy). component. The first a posteriori LES results are given.}, language = {en} } @book{AdamBrehmerHuettenrauchetal.2006, author = {Adam, Christian and Brehmer, Bastian and H{\"u}ttenrauch, Stefan and Jeske, Janin and Polze, Andreas and Rasche, Andreas and Sch{\"u}ler, Benjamin and Schult, Wolfgang}, title = {Aspektorientierte Programmierung : {\"U}berblick {\"u}ber Techniken und Werkzeuge}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-939469-23-0}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-33796}, publisher = {Universit{\"a}t Potsdam}, pages = {88}, year = {2006}, abstract = {Inhaltsverzeichnis 1 Einf{\"u}hrung 2 Aspektorientierte Programmierung 2.1 Ein System als Menge von Eigenschaften 2.2 Aspekte 2.3 Aspektweber 2.4 Vorteile Aspektorientierter Programmierung 2.5 Kategorisierung der Techniken und Werkzeuge f ¨ ur Aspektorientierte Programmierung 3 Techniken und Werkzeuge zur Analyse Aspektorientierter Softwareprogramme 3.1 Virtual Source File 3.2 FEAT 3.3 JQuery 3.4 Aspect Mining Tool 4 Techniken und Werkzeuge zum Entwurf Aspektorientierter Softwareprogramme 4.1 Concern Space Modeling Schema 4.2 Modellierung von Aspekten mit UML 4.3 CoCompose 4.4 Codagen Architect 5 Techniken und Werkzeuge zur Implementierung Aspektorientierter Softwareprogramme 5.1 Statische Aspektweber 5.2 Dynamische Aspektweber 6 Zusammenfassung}, language = {de} } @article{AkpoWeberReiche2006, author = {Akpo, Claudia and Weber, Edwin and Reiche, J{\"u}rgen}, title = {Synthesis, Langmuir and Langmuir-Blodgett film behaviour of new dendritic amphiphiles}, series = {New journal of chemistry}, volume = {30}, journal = {New journal of chemistry}, publisher = {RSC}, address = {Cambridge}, issn = {1144-0546}, doi = {10.1039/b609645j}, pages = {1820 -- 1833}, year = {2006}, abstract = {New amphiphilic compounds 1-9 that feature a construction with dendronized hydrophilic and hydrophobic segment groups connected to a specific aromatic or aliphatic spacer unit have been synthesized, following a modular building block strategy. The hydrophilic dendrons are typically branched elements with peripheral carboxylic groups, unlike the hydrophobic dendrons that contain peripheral alkyl chains as part of respective amide functions. The hydrophilic dendrons are in different generations of branching, while the hydrophobic dendrons are all in the first generation of branching (three terminal branching), but differ in the length of the alkyl chains, thus giving rise to designed structure and amphiphilic properties in the new compounds. The resulting surfactants are capable of forming well-defined Langmuir films of remarkable stability when spread from a solution onto an aqueous subphase. Nevertheless, specific packing behaviour and orientation of the amphiphilic molecules were found, depending on the molecular structure, as determined using analysis of the surface pressure-area (pi-A) isotherms. Langmuir-Blodgett transfer of the first monolayer from a pure water subphase to a clean silicon wafer proved possible for the amphiphiles of peripheral alkyl chain length C-12, while the amphiphiles with the longer alkyl chains failed, possibly due to the more rigid monolayers they form, impeding the transfer.}, language = {en} } @book{Alber2006, author = {Alber, Florian}, title = {Wohlfahrtsregime und Einstellungen zur Wohlfahrtsproduktion}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-11257}, publisher = {Universit{\"a}t Potsdam}, year = {2006}, abstract = {Dieser Aufsatz verkn{\"u}pft die komparative Wohlfahrtsforschung mit der traditionellen Einstellungsforschung auf Basis von quantitativen empirischen Erhebungen. Inhalt: 1 Wohlfahrtskonzepte 1.1 Die Zieldimension 1.2 Die Wohlfahrtsproduzenten 2 Determinanten von Unterst{\"u}tzungen 2.1 Die Makroebene: Wohlfahrtsregimetypologien 2.2 Die Mikroebene: Interessen und Werte 3 Operationalisierung 3.1 Wohlfahrtskonzepte 3.2 Indikatoren der Mikroebene 4 Unterst{\"u}tzungspotentiale f{\"u}r die Wohlfahrtskonzepte 4.1 Die Unterst{\"u}tzung des Egalitarismus-Etatismus 4.1.1 Innerstaatliche Einstellungsvariationen 4.1.2 Zwischenstaatliche Einstellungsvariation 4.2 Die Unterst{\"u}tzung des Funktionalismus 4.3 Die Unterst{\"u}tzung des Investitionsprinzips 4.4 Die Unterst{\"u}tzung des reinen Leistungsprinzips 4.5 Die Unterst{\"u}tzung des Familialismus 4.6 Die Unterst{\"u}tzung des Chancengleichheit-Marktliberalismus-Index 4.7 Kompositionen von Wohlfahrtskonzepten}, language = {de} } @phdthesis{Albers2006, author = {Albers, Nicole}, title = {On the relevance of adhesion : applications to Saturn's rings}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-10848}, school = {Universit{\"a}t Potsdam}, year = {2006}, abstract = {Since their discovery in 1610 by Galileo Galilei, Saturn's rings continue to fascinate both experts and amateurs. Countless numbers of icy grains in almost Keplerian orbits reveal a wealth of structures such as ringlets, voids and gaps, wakes and waves, and many more. Grains are found to increase in size with increasing radial distance to Saturn. Recently discovered "propeller" structures in the Cassini spacecraft data, provide evidence for the existence of embedded moonlets. In the wake of these findings, the discussion resumes about origin and evolution of planetary rings, and growth processes in tidal environments. In this thesis, a contact model for binary adhesive, viscoelastic collisions is developed that accounts for agglomeration as well as restitution. Collisional outcomes are crucially determined by the impact speed and masses of the collision partners and yield a maximal impact velocity at which agglomeration still occurs. Based on the latter, a self-consistent kinetic concept is proposed. The model considers all possible collisional outcomes as there are coagulation, restitution, and fragmentation. Emphasizing the evolution of the mass spectrum and furthermore concentrating on coagulation alone, a coagulation equation, including a restricted sticking probability is derived. The otherwise phenomenological Smoluchowski equation is reproduced from basic principles and denotes a limit case to the derived coagulation equation. Qualitative and quantitative analysis of the relevance of adhesion to force-free granular gases and to those under the influence of Keplerian shear is investigated. Capture probability, agglomerate stability, and the mass spectrum evolution are investigated in the context of adhesive interactions. A size dependent radial limit distance from the central planet is obtained refining the Roche criterion. Furthermore, capture probability in the presence of adhesion is generally different compared to the case of pure gravitational capture. In contrast to a Smoluchowski-type evolution of the mass spectrum, numerical simulations of the obtained coagulation equation revealed, that a transition from smaller grains to larger bodies cannot occur via a collisional cascade alone. For parameters used in this study, effective growth ceases at an average size of centimeters.}, subject = {Saturn}, language = {en} } @article{AlbersSpahn2006, author = {Albers, Nicole and Spahn, Frank}, title = {The influence of particle adhesion on the stability of agglomerates in Saturn's rings}, issn = {0019-1035}, doi = {10.1016/j.icarus.2005.10.011}, year = {2006}, abstract = {In planetary rings, binary collisions and mutual gravity are the predominant particle interactions. Based on a viscoelastic contact model we implement the concept of static adhesion. We discuss the collision dynamics and obtain a threshold velocity for restitution or agglomeration to occur. The latter takes place within a range of a few cm s(-1) for icy grains at low temperatures. The stability of such two-body agglomerates bound by adhesion and gravity in a tidal environment is discussed and applied to the saturnian system. A maximal agglomerate size for a given orbit location is obtained. In this way we are able to resolve the borderline of the zone where agglomerates can exist as a function of the agglomerate size and thus gain an alternative to the classical Roche limit. An increasing ring grain size with distance to Saturn as observed by the VIMS-experiment on board the Cassini spacecraft can be found by our estimates and implications for the saturnian system will be addressed.}, language = {en} } @article{Albertini2006, author = {Albertini, Francesca Yardenit}, title = {Bagdad und Jerusalem als "St{\"a}dte des Friedens" nach der fr{\"u}hmittelalterlichen Religionsphilosophie im Judentum und im Islam}, year = {2006}, language = {de} } @article{Albertini2006, author = {Albertini, Francesca Yardenit}, title = {J{\"u}dische Theologie und Ethik}, year = {2006}, language = {de} } @article{Albertini2006, author = {Albertini, Francesca Yardenit}, title = {Die Wirtschaftsethik aus j{\"u}discher Sicht : der Aufstand der Armen als Herausforderung des 21. Jahrhunderts}, issn = {0022-572X}, year = {2006}, language = {de} } @article{Albertini2006, author = {Albertini, Francesca Yardenit}, title = {Hiob 2,1 - 7a: Aspekte zur "Wette" zwischen Gott und dem Satan in der j{\"u}dischen Philosophie des Mittelalters un der Neuzeit}, year = {2006}, language = {de} } @article{Albertini2006, author = {Albertini, Francesca Yardenit}, title = {Die religi{\"o}se und geschichtliche Gestalt Jesus von Nazareth im Denken Moses Maimonides}, year = {2006}, language = {de} } @article{Albertini2006, author = {Albertini, Francesca Yardenit}, title = {Theologie und Geschichtsphilosophie am J{\"u}disch-Theologischen Seminar in Breslau : der Fall von Baruch Spinoza}, year = {2006}, language = {de} } @misc{Allefeld2006, author = {Allefeld, Carsten}, title = {About the derivation of the SCA algorithm}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-20137}, year = {2006}, abstract = {In Allefeld \& Kurths [2004], we introduced an approach to multivariate phase synchronization analysis in the form of a Synchronization Cluster Analysis (SCA). A statistical model of a synchronization cluster was described, and an abbreviated instruction on how to apply this model to empirical data was given, while an implementation of the corresponding algorithm was (and is) available from the authors. In this letter, the complete details on how the data analysis algorithm is to be derived from the model are filled in.}, language = {en} } @article{AlonsoBookhagenCarrapaetal.2006, author = {Alonso, Ricardo N. and Bookhagen, Bodo and Carrapa, Barbara and Coutand, Isabelle and Haschke, Michael and Hilley, George E. and Schoenbohm, Lindsay M. and Sobel, Edward and Strecker, Manfred and Trauth, Martin H. and Villanueva, Arturo}, title = {Tectonics, climate and landscape evolution of the Southern Central Andes : the Argentine Puna Plateau and adjacent regions between 22 and 30°S}, isbn = {978-3-540- 24329-8}, year = {2006}, language = {en} } @article{AltafimBassoAltafimetal.2006, author = {Altafim, Ruy Alberto Pisani and Basso, Heitor Cury and Altafim, Ruy Alberto Pisani and Lima, L. and de Aquino, C. V. and Goncalves Neto, Luiz and Gerhard, Reimund}, title = {Piezoelectrets from thermo-formed bubble structures of fluoropolymer-electret films}, issn = {1070-9878}, doi = {10.1109/TDEI.2006.247822}, year = {2006}, abstract = {The acetone extracts of the root bark and stem bark of Erythrina sacleuxii showed antiplasmodial activities against the chloroquine-sensitive (D6) and chloroquine-resistant (W2) strains of Plasmodium falciparum. Chromatographic separation of the acetone extract of the root bark afforded a new isoflavone, 7-hydroxy-4 -methoxy-3'- prenylisoflavone (trivial name 5-deoxy-3' - prenylbiochanin A) along with known isoflavonoids as the antiplasmodial principles. Flavonoids and isoflavonoids isolated from the stem bark of E. sucleuxii were also tested and showed antiplasmodial activities. The structures were determined on the basis of spectroscopic evidence.}, language = {en} } @article{AndayiYenesewDereseetal.2006, author = {Andayi, Andrew W. and Yenesew, Abiy and Derese, Solomon and Midiwo, Jacob O. and Gitu, Peter M. and Jondiko, Ogoche J. I. and Akala, Hoseah M. and Liyala, Pamela and Wangui, Julia and Waters, Norman C. and Heydenreich, Matthias and Peter, Martin G.}, title = {Antiplasmodial flavonoids from Erythrina sacleuxii}, issn = {0032-0943}, doi = {10.1055/s-2005-873200}, year = {2006}, abstract = {The acetone extracts of the root bark and stem bark of Erythrina sacleuxii showed antiplasmodial activities against the chloroquine-sensitive (D6) and chloroquine-resistant (W2) strains of Plasmodium falciparum. Chromatographic separation of the acetone extract of the root bark afforded a new isoflavone, 7-hydroxy-4 -methoxy-3'- prenylisoflavone (trivial name 5-deoxy-3' - prenylbiochanin A) along with known isoflavonoids as the antiplasmodial principles. Flavonoids and isoflavonoids isolated from the stem bark of E. sucleuxii were also tested and showed antiplasmodial activities. The structures were determined on the basis of spectroscopic evidence}, language = {en} } @article{AnderlMoteaSallanz2006, author = {Anderl-Motea, Corina and Sallanz, Josef}, title = {Nationale Minderheiten in der Globalisierung}, series = {Geographische Revue : Zeitschrift f{\"u}r Literatur und Diskussion}, volume = {8}, journal = {Geographische Revue : Zeitschrift f{\"u}r Literatur und Diskussion}, number = {1}, issn = {1438-3039}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-31247}, pages = {35 -- 50}, year = {2006}, abstract = {Inhalt: 1 Einleitung 2 Pr{\"a}zisierung der Fragestellung 3 Nationale Minderheiten in Rum{\"a}nien unter dem Einfluss der Globalisierung 4 Zur Bedeutung ethnischer Identit{\"a}t im Transformationsprozess 5 Fazit}, language = {de} } @article{Andersen2006, author = {Andersen, Christoph}, title = {Wettbewerb und Kooperation in der {\"o}ffentlichen Dienstleistungsproduktion}, series = {Public Management - Eine neue Generation in Wissenschaft und Praxis : Festschrift f{\"u}r Christoph Reichard}, journal = {Public Management - Eine neue Generation in Wissenschaft und Praxis : Festschrift f{\"u}r Christoph Reichard}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {978-3-939469-09-4}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-21890}, pages = {301 -- 314}, year = {2006}, abstract = {Behandelte Themen sind: Wettbewerb als Baustein zur Restrukturierung des {\"o}ffentlichen Sektors; Kooperation als Baustein zur Restrukturierung des {\"o}ffentlichen Sektors; Wettbewerb und Kooperation als Schl{\"u}ssel zur Balance von Effizienz und Effektivit{\"a}t}, language = {de} } @article{AndertSanchaisuriyaSanchaisuriyaetal.2006, author = {Andert, Christoph U. and Sanchaisuriya, Pattara and Sanchaisuriya, Kanokwan and Schelp, Frank P. and Schweigert, Florian J.}, title = {Nutritional status of pregnant women in Northeast Thailand}, issn = {0964-7058}, year = {2006}, abstract = {A comparative study on the nutritional status of primiparous and multiparous women in the first trimester of pregnancy was conducted in the northeastern province of Thailand, Khon Kaen, to investigate differences in protein- energy-mal nutrition, iron deficiency anaemia, vitamin A deficiency and carotenoid status between both parity groups. 94 subjects were recruited at first attendance of antenatal clinic. Data about weight, height, haemoglobin and haematocrit were obtained from hospital records. Anthropometric measurements of mid-upper arm circumference and triceps skinfold were done on a sub sample. Retinol, carotenoids and alpha-tocopherol were analysed using a reversed-phase high- performance liquid chromatography method. Ferritin, transthyretin and retinol-binding protein were determined by enzyme- linked immunosorbent assay. Primiparous women showed lower body mass index, mid-upper arm circumference, corrected arm muscle area (P <0.001) as well as lower retinol, cholesterol and triceps skinfold (P <0.05). After adjusting for age and socio-economical status the significant difference persisted for all parameters but triceps skinfold. No significant differences of alpha-tocopherol, serum proteins, carotenoids and iron indices could be observed, even though a tendency to higher values for ferritin, haemoglobin and haematocrit was shown in multiparous women. Prevalence of protein-energy- malnutrition (body mass index <18.5 kg/m(2)) in the primiparous group was significantly higher compared to the multiparous group (P<0.05). Prevalence of protein-energy-malnutrition, iron deficiency anaemia and vitamin A deficiency were 15.1\%, 6.3\% and 3.3\%, respectively, in the total study population. No differences between parity groups could be observed for prevalence of iron deficiency anaemia and vitamin A deficiency}, language = {en} }