TY - JOUR A1 - Denecke, Klaus-Dieter A1 - Plonka, J. T1 - Regularization and normalization of solid varieties Y1 - 1995 ER - TY - JOUR A1 - Denecke, Klaus-Dieter A1 - Reichel, Mario T1 - Monoids of hypersubstitutions and m-solid varieties Y1 - 1995 ER - TY - JOUR A1 - Denecke, Klaus-Dieter A1 - Plonka, J. T1 - Edge-solid varieties Y1 - 1995 ER - TY - JOUR A1 - Denecke, Klaus-Dieter A1 - Malcev, I. A. A1 - Reschke, M. T1 - On separation of Boolean clones by means of hyperidentities Y1 - 1995 ER - TY - JOUR A1 - Denecke, Klaus-Dieter A1 - Koppitz, Jörg T1 - Pre-solid varieties of commutative semigroups Y1 - 1995 ER - TY - JOUR A1 - Denecke, Klaus-Dieter A1 - Koppitz, Jörg T1 - M-solid varieties of semigroups Y1 - 1995 ER - TY - JOUR A1 - Denecke, Klaus-Dieter A1 - Koppitz, Jörg T1 - Pre-solid varieties of semigroups Y1 - 1995 ER - TY - JOUR A1 - Denecke, Klaus-Dieter T1 - Hybrid identities and hybrid equational logic Y1 - 1995 ER - TY - JOUR A1 - Denecke, Klaus-Dieter T1 - Clones and hyperidentities Y1 - 1995 ER - TY - JOUR A1 - Denecke, Klaus-Dieter A1 - Lüders, Otfried T1 - Category equivalences of clones Y1 - 1995 ER - TY - JOUR A1 - Denecke, Klaus-Dieter A1 - Lau, Dietlinde A1 - Pöschel, Reinhard A1 - Schweigert, D. T1 - Free clones and solid varieties Y1 - 1995 ER - TY - THES A1 - Gerber, Stefan T1 - Using software for fault detection in arithmetical circuits Y1 - 1995 ER - TY - BOOK A1 - Petersen, Hans-Georg T1 - Pros and cons of a negative income tax N2 - Contents: Conceptual Framework Theory and Impacts of NIT German Social Security - System or Jungle? The NIT as Last Resort - Pros and Cons Acceptance and Feasibility - Some Public Choice Remarks T3 - Finanzwissenschaftliche Diskussionsbeiträge - Bd. 02 Y1 - 1995 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-8476 ER - TY - GEN A1 - Howald, Markus A1 - Elsenbeer, Helmut A1 - Laczko, Endre A1 - Schlunegger, Urs Peter T1 - Capillary electrophoresis as a fast and universal tool in soil analysis N2 - Fast analysis of different species of molecules in soils is investigated by capillary electrophoresis (CE). Several CE techniques for the analysis of inorganic ions and carbohydrates have been tested. With regard to the intents of pedologists and the usually large number of soil analyses a bundle of CE systems is proposed, capable of effecting time-saving soil analyses. Adapted electrolyte systems recently published and new separation systems are described. Examples of the application of these methods to two different soil samples are presented. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 070 KW - capillary electrophoresis KW - soil analysis KW - UV-detection KW - inorganic ions KW - monosaccharides Y1 - 1995 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-16913 ER - TY - BOOK A1 - Petersen, Hans-Georg T1 - Transformation process after five years: behavioral adaptation and institutional change : the polish case N2 - Contents: - Monetary Stabilization and Budgetary Reforms - Restructuring the Tax System - Privatization - The Open Gap: Transfers - Social Reform: Acceptance and Feasibility - Some Public Choice Remarks T3 - Finanzwissenschaftliche Diskussionsbeiträge - Bd. 05 Y1 - 1995 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-16084 ER - TY - GEN A1 - Elsenbeer, Helmut A1 - Lack, Andreas A1 - Cassel, Keith T1 - Chemical fingerprints of hydrological compartments and flow paths at La Cuenca, western Amazonia N2 - A forested first-order catchment in western Amazonia was monitored for 2 years to determine the chemical fingerprints of precipitation, throughfall, overland flow, pipe flow, soil water, groundwater, and streamflow. We used five tracers (hydrogen, calcium, magnesium, potassium, and silica) to distinguish “fast” flow paths mainly influenced by the biological subsystem from “slow” flow paths in the geochemical subsystem. The former comprise throughfall, overland flow, and pipe flow and are characterized by a high potassium/silica ratio; the latter are represented by soil water and groundwater, which have a low potassium/silica ratio. Soil water and groundwater differ with respect to calcium and magnesium. The groundwater-controlled streamflow chemistry is strongly modified by contributions from fast flow paths during precipitation events. The high potassium/silica ratio of these flow paths suggests that the storm flow response at La Cuenca is dominated by event water. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 047 KW - Chemistry of fresh water KW - Runoff and streamflow KW - Weathering Y1 - 1995 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-16937 ER - TY - GEN A1 - Elsenbeer, Helmut A1 - Lorieri, Daniel A1 - Bonell, Mike T1 - Mixing model approaches to estimate storm flow sources in an overland flow-dominated tropical rain forest catchment N2 - Previous hydrometric studies demonstrated the prevalence of overland flow as a hydrological pathway in the tropical rain forest catchment of South Creek, northeast Queensland. The purpose of this study was to consider this information in a mixing analysis with the aim of identifying sources of, and of estimating their contribution to, storm flow during two events in February 1993. K and acid-neutralizing capacity (ANC) were used as tracers because they provided the best separation of the potential sources, saturation overland flow, soil water from depths of 0.3, 0.6, and 1.2 m, and hillslope groundwater in a two-dimensional mixing plot. It was necessary to distinguish between saturation overland flow, generated at the soil surface and following unchanneled pathways, and overland flow in incised pathways. This latter type of overland flow was a mixture of saturation overland flow (event water) with high concentrations of K and a low ANC, soil water (preevent water) with low concentrations of K and a low ANC, and groundwater (preevent water) with low concentrations of K and a high ANC. The same sources explained the streamwater chemistry during the two events with strongly differing rainfall and antecedent moisture conditions. The contribution of saturation overland flow dominated the storm flow during the first, high-intensity, 178-mm event, while the contribution of soil water reached 50% during peak flow of the second, low-intensity, 44-mm event 5 days later. This latter result is remarkably similar to soil water contributions to storm flow in mountainous forested catchments of the southeastern United States. In terms of event and preevent water the storm flow hydrograph of the high-intensity event is dominated by event water and that of the low-intensity event by preevent water. This study highlights the problems of applying mixing analyses to overland flow-dominated catchments and soil environments with a poorly developed vertical chemical zonation and emphasizes the need for independent hydrometric information for a complete characterization of watershed hydrology and chemistry. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 048 KW - SOILWATER END-MEMBERS KW - HYDROGRAPH SEPARATION KW - STREAMWATER CHEMISTRY KW - ACIDIFICATION KW - MIXTURE KW - TRACERS KW - EVENTS Y1 - 1995 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-16948 ER - TY - GEN A1 - Reich, Sebastian T1 - Smoothed dynamics of highly oscillatory Hamiltonian systems N2 - We consider the numerical treatment of Hamiltonian systems that contain a potential which grows large when the system deviates from the equilibrium value of the potential. Such systems arise, e.g., in molecular dynamics simulations and the spatial discretization of Hamiltonian partial differential equations. Since the presence of highly oscillatory terms in the solutions forces any explicit integrator to use very small step size, the numerical integration of such systems provides a challenging task. It has been suggested before to replace the strong potential by a holonomic constraint that forces the solutions to stay at the equilibrium value of the potential. This approach has, e.g., been successfully applied to the bond stretching in molecular dynamics simulations. In other cases, such as the bond-angle bending, this methods fails due to the introduced rigidity. Here we give a careful analysis of the analytical problem by means of a smoothing operator. This will lead us to the notion of the smoothed dynamics of a highly oscillatory Hamiltonian system. Based on our analysis, we suggest a new constrained formulation that maintains the flexibility of the system while at the same time suppressing the high-frequency components in the solutions and thus allowing for larger time steps. The new constrained formulation is Hamiltonian and can be discretized by the well-known SHAKE method. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 031 Y1 - 1995 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-15639 ER - TY - GEN A1 - Grözinger, Karl Erich T1 - Between magic and religion : Ashkenazi Hasidic piety N2 - Excerpt: Hasidic Ashkenazi literature is known to scholars of Jewish religion as one of the most prolific sources of medieval Jewish magic or magical beliefs. This is all the more astonishing as the non esoteric writings of the Hasidey Ashkenaz represent a rather traditional Jewish piety as known to us from talmudic sources. Considering this duality of an almost traditional Jewish piety on the one hand and very distinct magic tenets on the other, we may ask whether the Hasidey Ashkenaz themselves perceived any difference between magic and religion. There are indeed a number of modern historians of religion who completely deny the validity of such a distinction, for in most historical religions magic and religion are in fact intertwined to a certain degree, thus permitting almost no differentiation between the two. T3 - Zweitveröffentlichungen der Universität Potsdam : Philosophische Reihe - 11 Y1 - 1995 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-18595 ER - TY - GEN A1 - Anton, Peter A1 - Laschewsky, André A1 - Ward, M. D. T1 - Solubilization control by redox-switching of polysoaps N2 - Reversible changes in the self-organization of polysoaps may be induced by controlling their charge numbers via covalently bound redox moieties. This is illustrated with two viologen polysoaps, which in response to an electrochemical stimulus, change their solubility and aggregation in water, leading from homogeneously dissolved and aggregated molecules to collapsed ones and vice verse. Using the electrochemical quartz crystal microbalance (EQCM), it could be shown that the reversibility of this process is better than 95% in 16 cycles. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 084 KW - Quartz Crystal KW - microbalance KW - films KW - Electrochemistry KW - viologen Y1 - 1995 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-17336 ER -