TY - BOOK A1 - Dahlke, Stephan A1 - Maaß, Peter T1 - The affine uncertainty principle in one and two dimensions T3 - Preprint / Universität Potsdam, Fachbereich Mathematik Y1 - 1994 VL - 1994, 01 PB - Univ. CY - Potsdam ER - TY - BOOK A1 - Dahlke, Stephan A1 - Maaß, Peter T1 - A continuous wavelet transform on tangent bundles of spheres T3 - Preprint / Universität Potsdam, Institut für Mathematik Y1 - 1994 VL - 1994, 16 PB - Univ. CY - Potsdam ER - TY - JOUR A1 - Dahlke, Stephan A1 - Maaß, Peter T1 - The affine uncertainty principle in one and two dimensions Y1 - 1995 ER - TY - INPR A1 - Dicken, Volker A1 - Maaß, Peter T1 - Wavelet-Galerkin methods for ill-posed problems N2 - Projection methods based on wavelet functions combine optimal convergence rates with algorithmic efficiency. The proofs in this paper utilize the approximation properties of wavelets and results from the general theory of regularization methods. Moreover, adaptive strategies can be incorporated still leading to optimal convergence rates for the resulting algorithms. The so-called wavelet-vaguelette decompositions enable the realization of especially fast algorithms for certain operators. T3 - NLD Preprints - 22 Y1 - 1995 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-13890 ER - TY - JOUR A1 - Louis, Alfred K. A1 - Maaß, Peter T1 - Contour reconstructions for 3D X-Ray CT-Images Y1 - 1993 ER - TY - BOOK A1 - Louis, Alfred K. A1 - Maaß, Peter A1 - Rieder, Andreas T1 - Wavelets : Theorie und Anwendungen Y1 - 1998 SN - 3-519-12094-1 U6 - https://doi.org/10.1007/978-3-322-80136-4 PB - Vieweg+Teubner Verlag CY - Wiesbaden ER - TY - BOOK A1 - Louis, Alfred K. A1 - Maaß, Peter A1 - Rieder, Andreas T1 - Wavelets : Theorie und Anwendungen Y1 - 1994 PB - Teubner CY - Stuttgart ER - TY - JOUR A1 - Louis, Alfred K. A1 - Maaß, Peter A1 - Rieder, Andreas A1 - Stark, H.-G. T1 - Wavelets and digital image processing Y1 - 1994 ER - TY - JOUR A1 - Maaß, Peter T1 - Families of orthogonal 2D wavelets Y1 - 1996 ER - TY - JOUR A1 - Maaß, Peter T1 - Non-separable orthogonal 2D-wavelets Y1 - 1996 ER - TY - JOUR A1 - Maaß, Peter T1 - Wavelet galerkin methods for inverse problems Y1 - 1994 ER - TY - INPR A1 - Maaß, Peter A1 - Pereverzev, Sergei V. A1 - Ramlau, Ronny A1 - Solodky, Sergei G. T1 - An adaptive discretization for Tikhonov-Phillips regularization with a posteriori parameter selection N2 - The aim of this paper is to describe an efficient strategy for descritizing ill-posed linear operator equations of the first kind: we consider Tikhonov-Phillips-regularization χ^δ α = (a * a + α I)^-1 A * y ^δ with a finite dimensional approximation A n instead of A. We propose a sparse matrix structure which still leads to optimal convergences rates but requires substantially less scalar products for computing A n compared with standard methods. T3 - NLD Preprints - 48 Y1 - 1998 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-14739 ER - TY - JOUR A1 - Maaß, Peter A1 - Pereverzev, Sergei V. A1 - Ramlau, Ronny A1 - Solodky, Sergei G. T1 - An adaptive discretization for Tikhonov-Phillips regularization with a posteriori parameter selection JF - Preprint NLD Y1 - 1998 SN - 1432-2935 VL - 48 PB - Univ. Potsdam CY - Potsdam ER - TY - JOUR A1 - Maaß, Peter A1 - Ramlau, Ronny T1 - Wavelet accelerated iteration methods for hyperthermia treatment planning Y1 - 1996 ER - TY - INPR A1 - Maaß, Peter A1 - Rieder, Andreas T1 - Wavelet-accelerated Tikhonov-Phillips regularization with applications N2 - Contents: 1 Introduction 1.1 Tikhanov-Phillips Regularization of Ill-Posed Problems 1.2 A Compact Course to Wavelets 2 A Multilevel Iteration for Tikhonov-Phillips Regularization 2.1 Multilevel Splitting 2.2 The Multilevel Iteration 2.3 Multilevel Approach to Cone Beam Reconstuction 3 The use of approximating operators 3.1 Computing approximating families {Ah} T3 - NLD Preprints - 30 Y1 - 1996 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-14104 ER - TY - BOOK A1 - Maaß, Peter A1 - Rieder, Andreas T1 - Wavelet-accelerated Tikhonov-Phillips regularization with applications T3 - Preprint NLD Y1 - 1996 VL - 30 PB - Univ. CY - Potsdam ER - TY - GEN A1 - Maaß, Ulrike A1 - Kühne, Franziska A1 - Heinze, Peter Eric A1 - Ay-Bryson, Destina Sevde A1 - Weck, Florian T1 - The concise measurement of clinical communication skills BT - Validation of a short scale T2 - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe N2 - Objective: There is a lack of brief rating scales for the reliable assessment of psychotherapeutic skills, which do not require intensive rater training and/or a high level of expertise. Thus, the objective is to validate a 14-item version of the Clinical Communication Skills Scale (CCSS-S). Methods: Using a sample of N = 690 video-based ratings of role-plays with simulated patients, we calculated a confirmatory factor analysis and an exploratory structural equation modeling (ESEM), assessed convergent validities, determined inter-rater reliabilities and compared these with those who were either psychology students, advanced psychotherapy trainees, or experts. Results: Correlations with other competence rating scales were high (rs > 0.86–0.89). The intraclass correlations ranged between moderate and good [ICC(2,2) = 0.65–0.80], with student raters yielding the lowest scores. The one-factor model only marginally replicated the data, but the internal consistencies were excellent (α = 0.91–95). The ESEM yielded a two-factor solution (Collaboration and Structuring and Exploration Skills). Conclusion: The CCSS-S is a brief and valid rating scale that reliably assesses basic communication skills, which is particularly useful for psychotherapy training using standardized role-plays. To ensure good inter-rater reliabilities, it is still advisable to employ raters with at least some clinical experience. Future studies should further investigate the one- or two-factor structure of the instrument. T3 - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe - 820 KW - standardized patient KW - treatment integrity KW - measurement KW - therapist competence KW - role-play KW - psychotherapy process Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-582642 SN - 1866-8364 IS - 820 ER - TY - JOUR A1 - Maaß, Ulrike A1 - Kühne, Franziska A1 - Heinze, Peter Eric A1 - Ay-Bryson, Destina Sevde A1 - Weck, Florian T1 - The concise measurement of clinical communication skills BT - Validation of a short scale JF - Frontiers in Psychiatry N2 - Objective: There is a lack of brief rating scales for the reliable assessment of psychotherapeutic skills, which do not require intensive rater training and/or a high level of expertise. Thus, the objective is to validate a 14-item version of the Clinical Communication Skills Scale (CCSS-S). Methods: Using a sample of N = 690 video-based ratings of role-plays with simulated patients, we calculated a confirmatory factor analysis and an exploratory structural equation modeling (ESEM), assessed convergent validities, determined inter-rater reliabilities and compared these with those who were either psychology students, advanced psychotherapy trainees, or experts. Results: Correlations with other competence rating scales were high (rs > 0.86–0.89). The intraclass correlations ranged between moderate and good [ICC(2,2) = 0.65–0.80], with student raters yielding the lowest scores. The one-factor model only marginally replicated the data, but the internal consistencies were excellent (α = 0.91–95). The ESEM yielded a two-factor solution (Collaboration and Structuring and Exploration Skills). Conclusion: The CCSS-S is a brief and valid rating scale that reliably assesses basic communication skills, which is particularly useful for psychotherapy training using standardized role-plays. To ensure good inter-rater reliabilities, it is still advisable to employ raters with at least some clinical experience. Future studies should further investigate the one- or two-factor structure of the instrument. KW - standardized patient KW - treatment integrity KW - measurement KW - therapist competence KW - role-play KW - psychotherapy process Y1 - 2022 U6 - https://doi.org/10.3389/fpsyt.2022.977324 SN - 1664-0640 VL - 13 PB - Frontiers CY - Lausanne, Schweiz ER -