@article{64721, author = {{Glöckner, Helge}}, issn = {{0039-3223}}, journal = {{Studia Mathematica}}, keywords = {{22E65, 46E25, 46F05, 46H05, 46H30}}, number = {{2}}, pages = {{147–177}}, title = {{{Algebras whose groups of units are Lie groups}}}, doi = {{10.4064/sm153-2-4}}, volume = {{153}}, year = {{2002}}, } @article{64718, author = {{Glöckner, Helge}}, issn = {{0017-0895}}, journal = {{Glasgow Mathematical Journal}}, keywords = {{22D05, 22E50, 20E26, 14L10}}, number = {{2}}, pages = {{231–239}}, title = {{{Approximation by p-adic Lie groups}}}, doi = {{10.1017/S0017089502020049}}, volume = {{44}}, year = {{2002}}, } @article{64713, author = {{Glöckner, Helge and Willis, George A.}}, issn = {{0146-4124}}, journal = {{Topology Proceedings}}, keywords = {{22D05, 22D10, 46L05}}, number = {{2}}, pages = {{565–591}}, title = {{{Topologization of Hecke pairs and Hecke C^*-algebras.}}}, volume = {{26}}, year = {{2002}}, } @article{18612, abstract = {{There is increasing interest in many-body perturbation theory as a practical tool for the calculation of ground-state properties. As a consequence, unambiguous sum rules such as the conservation of particle number under the influence of the Coulomb interaction have acquired an importance that did not exist for calculations of excited-state properties. In this paper we obtain a rigorous, simple relation whose fulfilment guarantees particle-number conservation in a given diagrammatic self-energy approximation. Hedin’s G0W0 approximation does not satisfy this relation and hence violates the particle-number sum rule. Very precise calculations for the homogeneous electron gas and a model inhomogeneous electron system allow the extent of the nonconservation to be estimated.}}, author = {{Schindlmayr, Arno and García-González, Pablo and Godby, Rex William}}, issn = {{1095-3795}}, journal = {{Physical Review B}}, number = {{23}}, publisher = {{American Physical Society}}, title = {{{Diagrammatic self-energy approximations and the total particle number}}}, doi = {{10.1103/PhysRevB.64.235106}}, volume = {{64}}, year = {{2001}}, } @article{18615, abstract = {{The performance of several common approximations for the exchange-correlation kernel within time-dependent density-functional theory is tested for elementary excitations in the homogeneous electron gas. Although the adiabatic local-density approximation gives a reasonably good account of the plasmon dispersion, systematic errors are pointed out and traced to the neglect of the wave-vector dependence. Kernels optimized for atoms are found to perform poorly in extended systems due to an incorrect behavior in the long-wavelength limit, leading to quantitative deviations that significantly exceed the experimental error bars for the plasmon dispersion in the alkali metals.}}, author = {{Tatarczyk, Krzysztof and Schindlmayr, Arno and Scheffler, Matthias}}, issn = {{1095-3795}}, journal = {{Physical Review B}}, number = {{23}}, publisher = {{American Physical Society}}, title = {{{Exchange-correlation kernels for excited states in solids}}}, doi = {{10.1103/PhysRevB.63.235106}}, volume = {{63}}, year = {{2001}}, } @inbook{18614, author = {{Schindlmayr, Arno}}, booktitle = {{Recent Research Developments in Physics}}, editor = {{Pandalai, S. G.}}, isbn = {{81-7895-024-3}}, pages = {{277--288}}, publisher = {{Transworld Research Network}}, title = {{{Self-consistency and vertex corrections beyond the GW approximation}}}, volume = {{2}}, year = {{2001}}, } @article{35365, author = {{Thiele, Thomas and Berret, J.-F. and Müller, Stefan and Schmidt, Claudia}}, issn = {{0148-6055}}, journal = {{Journal of Rheology}}, keywords = {{Mechanical Engineering, Mechanics of Materials, Condensed Matter Physics, General Materials Science}}, number = {{1}}, pages = {{29--48}}, publisher = {{Society of Rheology}}, title = {{{Rheology and nuclear magnetic resonance measurements under shear of sodium dodecyl sulfate/decanol/water nematics}}}, doi = {{10.1122/1.1332387}}, volume = {{45}}, year = {{2001}}, } @book{50846, author = {{Blank, Andreas}}, publisher = {{De Gruyter}}, title = {{{Der logische Aufbau von Leibniz’ Metaphysik. }}}, year = {{2001}}, } @article{50913, author = {{Blank, Andreas}}, journal = {{Studia Leibnitiana}}, number = {{2}}, pages = {{216--223}}, title = {{{“Substance Monism and Substance Pluralism in Leibniz’s Metaphysical Papers 1675–1676.” }}}, volume = {{33}}, year = {{2001}}, } @article{26003, abstract = {{Long-chain n-alkylamine surfactants have been used as structure-directing agents in the synthesis of mesoporous aluminophosphates by a highly cooperative formation mechanism in an alcoholic system. Small amounts of water in the synthesis mixture play a significant role in the hydrolysis of the aluminum precursor (Al[OiPr]3) and are important for the quality of the mesostructured products. The materials exhibit disordered mesostructures, the stability and structural order of which can be improved by a postsynthetic thermal treatment. The products are then stable enough for the removal of the surfactant molecules by acidic solvent extraction, yielding surface areas up to 690 m2/g.}}, author = {{Tiemann, Michael and Schulz, Marcus and Jäger, Christian and Fröba, Michael}}, issn = {{0897-4756}}, journal = {{Chemistry of Materials}}, pages = {{2885--2891}}, title = {{{Mesoporous Aluminophosphate Molecular Sieves Synthesized under Nonaqueous Conditions}}}, doi = {{10.1021/cm011044p}}, year = {{2001}}, } @article{26002, abstract = {{Over the past few years a growing number of scientists have dedicated their attention to the synthesis of mesostructured aluminophosphates following the concept of supramolecular structure direction. Their research has produced a large variety of synthetic approaches and yielded materials with various structural properties. Today a substantial number of publications have accumulated; this short review provides a general summary of the literature with the aim to display the opportunities for future work.}}, author = {{Tiemann, Michael and Fröba, Michael}}, issn = {{0897-4756}}, journal = {{Chemistry of Materials}}, pages = {{3211--3217}}, title = {{{Mesostructured Aluminophosphates Synthesized with Supramolecular Structure Directors}}}, doi = {{10.1021/cm0110371}}, year = {{2001}}, } @inbook{64723, author = {{Glöckner, Helge and Neeb, Karl-Hermann}}, booktitle = {{Nuclear groups and Lie groups. Selected lectures of the workshop, Madrid, Spain, September 1999}}, isbn = {{3-88538-224-5}}, keywords = {{22A05, 22A10, 46L99}}, pages = {{163–185}}, publisher = {{Lemgo: Heldermann Verlag}}, title = {{{Minimally almost periodic Abelian groups and commutative W^*-algebras}}}, year = {{2001}}, } @article{64725, author = {{Glöckner, Helge and Willis, George A.}}, issn = {{0933-7741}}, journal = {{Forum Mathematicum}}, keywords = {{22E20, 20F50, 20E08}}, number = {{3}}, pages = {{413–421}}, title = {{{Uniscalar p-adic Lie groups}}}, doi = {{10.1515/form.2001.015}}, volume = {{13}}, year = {{2001}}, } @article{64724, author = {{Glöckner, Helge}}, issn = {{0026-9255}}, journal = {{Monatshefte für Mathematik}}, keywords = {{43A35, 15B48}}, number = {{4}}, pages = {{303–324}}, title = {{{Functions operating on positive semidefinite quaternionic matrices}}}, doi = {{10.1007/s006050170036}}, volume = {{132}}, year = {{2001}}, } @article{8914, abstract = {{Piezoelectric ultrasonic motors have been investigated for several years and have already found their first practical applications. Their key feature is that they are able to produce a high thrust force related to their volume. Beside rotary drives like the travelling wave motor, linear drives have also been developed, but only a few are presently commercially available. In the present paper, we first describe the state of the art of linear piezoelectric motors. The motors are characterized with respect to their no-load velocity, maximum thrust force, efficiency and other technical properties. In the second part, we present a new motor, which is judged to be capable of surpassing the characteristics of other piezoelectric motors because of its unique design which allows the piezoelectric drive elements to be pre-stressed in the direction of their polarization. The piezoelectric elements convert energy using the longitudinal d33 effect which allows an improved reliability, large vibration amplitudes and excellent piezoelectric coupling. Energy loss by vibration damping is minimized, and the efficiency can be improved significantly. Experimental results show that the motor characteristics can be optimized for a particular task by choosing the appropriate operating parameters such as exciting voltage, exciting frequency and normal force. }}, author = {{Hemsel, Tobias and Wallaschek, Jörg}}, issn = {{0041-624X}}, journal = {{Ultrasonics}}, keywords = {{Linear motor}}, pages = {{37 -- 40}}, title = {{{Survey of the present state of the art of piezoelectric linear motors}}}, doi = {{10.1016/S0041-624X(99)00143-2}}, volume = {{38}}, year = {{2000}}, } @inproceedings{8915, abstract = {{Ultrasonic linear motors have now been investigated for several years. Their key features are high thrust forces related to their volume and good position-accuracy. This contribution consists of two main parts. In the first part we describe the state-of-the-art of linear piezoelectric motors. Characteristics like no-load velocity, maximum thrust force and other technical properties of commercially available devices will be reported as well as those of prototypes. In the second part we report an ongoing research and development project aiming at a linear piezoelectric motor, which is capable of surpassing some of the shortcomings of other piezoelectric motors}}, author = {{Hemsel, Tobias and Wallaschek, Jörg}}, booktitle = {{Ultrasonics Symposium, 2000 IEEE}}, issn = {{1051-0117}}, keywords = {{linear motors, ultrasonic motors, linear piezoelectric motor, maximum thrust force, no-load velocity, ultrasonic linear motor, Electromagnetic devices, Electromagnetic fields, Frequency, Friction, Gears, Materials science and technology, Piezoelectric materials, Research and development, Vibrations, Wheels}}, pages = {{663--666 vol.1}}, title = {{{State of the art and development trends of ultrasonic linear motors}}}, doi = {{10.1109/ULTSYM.2000.922635}}, volume = {{1}}, year = {{2000}}, } @article{18617, abstract = {{The decay properties of the one-particle Green function in real space and imaginary time are systematically studied for solids. I present an analytic solution for the homogeneous electron gas at finite and at zero temperature as well as asymptotic formulas for real metals and insulators that allow an analytic treatment in electronic-structure calculations based on a space-time representation. The generic dependence of the decay constants on known system parameters is used to compare the scaling of reciprocal-space algorithms for the GW approximation and the space-time method.}}, author = {{Schindlmayr, Arno}}, issn = {{1095-3795}}, journal = {{Physical Review B}}, number = {{19}}, pages = {{12573--12576}}, publisher = {{American Physical Society}}, title = {{{Decay properties of the one-particle Green function in real space and imaginary time}}}, doi = {{10.1103/PhysRevB.62.12573}}, volume = {{62}}, year = {{2000}}, } @article{35366, author = {{Quijada-Garrido, Isabel and Siebert, Hartmut and Friedrich, Christian and Schmidt, Claudia}}, issn = {{0024-9297}}, journal = {{Macromolecules}}, keywords = {{Materials Chemistry, Inorganic Chemistry, Polymers and Plastics, Organic Chemistry}}, number = {{10}}, pages = {{3844--3854}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Flow Behavior of Two Side-Chain Liquid Crystal Polymers Studied by Transient Rheology}}}, doi = {{10.1021/ma991490m}}, volume = {{33}}, year = {{2000}}, } @article{50914, author = {{Blank, Andreas}}, journal = {{Studia Leibnitiana}}, number = {{1}}, pages = {{117--125}}, title = {{{“Leibniz und die panpsychistische Deutung der Theorie der einfachen Substanzen.” }}}, volume = {{32}}, year = {{2000}}, } @article{50915, author = {{Blank, Andreas}}, journal = {{Grazer Philosophische Studien}}, number = {{1}}, pages = {{197--215}}, title = {{{“Die kategoriale Unbestimmtheit der Gegenstände in Wittgensteins Tractatus.” }}}, volume = {{60}}, year = {{2000}}, }