TY - JOUR A1 - Peters, A. A1 - Doring, A. A1 - Ladwig, K.-H. A1 - Meisinger, C. A1 - Linkohr, B. A1 - Autenrieth, C. A1 - Baumeister, S.E. A1 - Behr, J. A1 - Bergner, A. A1 - Bickel, H. A1 - Bidlingmaier, M. A1 - Dias, A. A1 - Emeny, R.T. A1 - Fischer, B. A1 - Grill, E. A1 - Gorzelniak, L. A1 - Hansch, H. A1 - Heidbreder, S. A1 - Heier, M. A1 - Horsch, A. A1 - Huber, D. A1 - R. M., Huber A1 - Jorres, R.A. A1 - Kaab, S. A1 - Karrasch, S. A1 - Kirchberger, I. A1 - Klug, G. A1 - Kranz, B. A1 - Kuch, B. A1 - Lacruz, M.E. A1 - Lang, O. A1 - Mielck, A. A1 - Nowak, D. A1 - Perz, S. A1 - Schneider, A. A1 - Schulz, H. A1 - Müller, Martin A1 - Seidl, H. A1 - Strobl, R. A1 - Thorand, B. A1 - Wende, R. A1 - Weidenhammer, W. A1 - Zimmermann, A.-K. A1 - Wichmann, H.-E. A1 - Holle, R. ED - BioMed Central, T1 - Multimorbidity and successful aging: the population-based KORA-Age study JF - Health and quality of life outcomes N2 - Background Multimorbidity in the older population is well acknowledged to negatively affect health-related quality of life (HRQL). Several studies have examined the independent effects of single diseases; however, little research has focused on interaction between diseases. The purpose of this study was to assess the impact of six self-reported major conditions and their combinations on HRQL measured by the EQ-5D. Methods The EQ-5D was administered in the population-based KORA-Age study of 4,565 Germans aged 65 years or older. A generalised additive regression model was used to assess the effects of chronic conditions on HRQL and to account for the nonlinear associations with age and body mass index (BMI). Disease interactions were identified by a forward variable selection method. Results The conditions with the greatest negative impact on the EQ-5D index were the history of a stroke (regression coefficient -11.3, p < 0.0001) and chronic bronchitis (regression coefficient -8.1, p < 0.0001). Patients with both diabetes and coronary disorders showed more impaired HRQL than could be expected from their separate effects (coefficient of interaction term -8.1, p < 0.0001). A synergistic effect on HRQL was also found for the combination of coronary disorders and stroke. The effect of BMI on the mean EQ-5D index was inverse U-shaped with a maximum at around 24.8 kg/m2. Conclusions There are important interactions between coronary problems, diabetes mellitus, and the history of a stroke that negatively affect HRQL in the older German population. Not only high but also low BMI is associated with impairments in health status. KW - Aging KW - Multimorbidity KW - KORA Study Y1 - 2011 ER - TY - JOUR A1 - Müller, Martin A1 - Peters, A. A1 - Doring, A. A1 - Ladwig, K.-H. A1 - Holle, R. A1 - Meisinger, C. A1 - Linkohr, B. A1 - Autenrieth, C. A1 - Baumeister, S. A1 - Behr, J. A1 - Bergner, A. A1 - Bickel, H. A1 - Bidlingmaier, M. A1 - Dias, A. A1 - Emeny, R.T. A1 - Fischer, B. A1 - Grill, E. A1 - Gorzelniak, L. A1 - Hansch, H. A1 - Heidbreder, S. A1 - Heier, M. A1 - Horsch, A. A1 - Huber, D. A1 - Huber, R.M. A1 - Jorres, R.A. A1 - Kaab, S. A1 - Karrasch, A1 - Kirchberger, A1 - Klug, A1 - Kranz, A1 - Kruch, A1 - Lacruz, A1 - Lang, A1 - Mielk, A1 - Nowak, A1 - Schneider, A1 - Schulz, A1 - Seidel, A1 - Strobl, A1 - Thorand, A1 - Wende, A1 - Weidenhammer, A1 - Zimmermann, A1 - Wichmann, ED - Springer Nature, T1 - Multimorbidity and successful aging: the population-based KORA-Age study JF - Zeitschrift für Gerontologie und Geriatrie N2 - Background Multimorbidity in the older population is well acknowledged to negatively affect health-related quality of life (HRQL). Several studies have examined the independent effects of single diseases; however, little research has focused on interaction between diseases. The purpose of this study was to assess the impact of six self-reported major conditions and their combinations on HRQL measured by the EQ-5D. Methods The EQ-5D was administered in the population-based KORA-Age study of 4,565 Germans aged 65 years or older. A generalised additive regression model was used to assess the effects of chronic conditions on HRQL and to account for the nonlinear associations with age and body mass index (BMI). Disease interactions were identified by a forward variable selection method. Results The conditions with the greatest negative impact on the EQ-5D index were the history of a stroke (regression coefficient -11.3, p < 0.0001) and chronic bronchitis (regression coefficient -8.1, p < 0.0001). Patients with both diabetes and coronary disorders showed more impaired HRQL than could be expected from their separate effects (coefficient of interaction term -8.1, p < 0.0001). A synergistic effect on HRQL was also found for the combination of coronary disorders and stroke. The effect of BMI on the mean EQ-5D index was inverse U-shaped with a maximum at around 24.8 kg/m2. Conclusions There are important interactions between coronary problems, diabetes mellitus, and the history of a stroke that negatively affect HRQL in the older German population. Not only high but also low BMI is associated with impairments in health status. KW - Body Mass Index KW - Chronic Condition KW - Questionnaire Respondent KW - Disease Interaction KW - Coronary Problem Y1 - 2018 ER - TY - JOUR A1 - Reuschenbach, B. A1 - Cassier-Woidasky, A.K. A1 - Mahler, C. A1 - Mayer, H. A1 - Richter, M.T. A1 - Berendonk, C. A1 - Hoben, M. A1 - Müller, Martin A1 - Flerchinger, C. A1 - Zündel, M. A1 - Schiff, A. ED - BELTZ, T1 - Methodennutzung, -präferenz und -fortbildungsbedarfe in der deutschsprachigen Pflegewissenschaft - Ergebnisse einer Online-Befragung. Use, preference and educational needs of research methods in nursing science in german speaking countries - results of an online survey JF - Pflege und Gesellschaft KW - Pflege KW - Pflegewissenschaft KW - Pflegeausbildung Y1 - 2012 IS - 17(3) ER - TY - CHAP A1 - Kohrmann, M. A1 - Buchschmid, M. A1 - Schanda, Ulrich A1 - Müller, G. T1 - A FEM-based planning tool for the vibro-acoustic design of wooden floors at low frequencies T2 - Proceedings of Inter-Noise 2016 N2 - Within the scope of the recently finished cooperate research project "VibWood" at Technical University of Munich and Rosenheim University of Applied Sciences, fully parametrized numerical models for lightweight wooden floor constructions have been developed and calibrated by experimental modal analyses. Based on a vast parametric study including floating floors and suspended ceilings a database of narrowband sound power levels in the frequency range up to 125 Hz for a wide range of floor dimensions has been set up. A procedure will be presented on how to process the numerical data and derive single number values that allow a comparison to the standardized rating of impact sound insulation according to DIN EN ISO 717-2. The derived data is implemented into a graphical user interface (GUI). This GUI is available for free. The database is open for additional geometries and will be enhanced by different constructions in the near future. KW - Schallmesstechnik KW - Holzbau Y1 - 2016 ER - TY - JOUR A1 - Müller, Martin A1 - Whitney, S. L. A1 - Alghwiri, A. A1 - Alshebber, K. A1 - Strobl, R. A1 - Aghadir, A. A1 - Almomani, M. O. A1 - Furman, J. M. A1 - Grill, E. ED - PlumX Metrics, T1 - Subscales of the vestibular activities and participation questionnaire could be applied across cultures JF - European journal of epidemiology N2 - Objectives The objective of this study was to assess the objectivity, cross-cultural validity, and convergent validity of the Vestibular Activities and Participation (VAP) questionnaire among four countries, Germany, United States, Jordan, and Saudi Arabia. Study Design and Setting This was a cross-sectional study conducted in four specialized outpatient dizziness clinics in Germany, United States, Jordan, and Saudi Arabia. Results A total of 453 participants were included in the study. The Rasch analysis revealed two separate subscales. Subscale 1 items included focusing attention, lying down, standing, bending, lifting and carrying objects, and sports. Subscale 2 items included walking long distances, climbing, running, moving around within buildings other than home, using transportation, and driving. The Pearson product–moment correlation between the Dizziness Handicap Inventory and the summary score of the VAP subscale 1 was 0.66 and was 0.64 for subscale 2. Conclusion Owing to its shortness and intercultural adaptability, the new two-scale version of the VAP questionnaire lends itself to clinical practice and research across countries to estimate the effect of vertigo and dizziness on activity limitation and participation restrictions. Psychometrically sound summary scores can be calculated. More extended versions of the VAP can be used for comprehensive clinical assessment where summary scores are not needed or a more detailed documentation is warranted. KW - Dizziness KW - Vertigo KW - Quality of life KW - Activities of daily living KW - social participation Y1 - 2018 ER - TY - CHAP A1 - Buchschmid, M. A1 - Kohrmann, M. A1 - Winter, C. A1 - Müller, G. A1 - Völtl, R. A1 - Schanda, Ulrich T1 - Vibroacoustic Characteristics of Light-Weighted Slabs. Part 2: Measurement-Based Investigation of the Sound Radiation of Suspended Ceilings T2 - Deutsche Gesellschaft für Akustik e.V. (ed.), Fortschritte der Akustik - DAGA N2 - In this contribution a method for the prediction of the radiated sound out of the velocity field of a vibrating ceiling is presented. The numerical method was validated via measurements on a real structure using a pp-probe. It is based on Integral Transform techniques and can be applied in the postprocessing of a FEM simulation (harmonic analysis) [1]. The method was verified by measurements on the real structure and can be used for parametrical studies. Rounding off the Parts 1 and 2 of this publication nomograms, based on dimensionless parameters, can be developed to predict the sound radiation of light weight slabs. Hereby different sets of geometry as well as different configurations of ceilings can be studied in order to describe the acoustical and dynamical behaviour of wooden ceilings. KW - Schallmesstechnik KW - Holzbau Y1 - 2013 ER - TY - CHAP A1 - Kohrmann, M. A1 - Buchschmid, M. A1 - Greim, A. A1 - Müller, G. A1 - Schanda, Ulrich T1 - Vibroacoustic Characteristics of lightweighted Slabs. Part 1: Aspects of Numerical Modeling, Model Updating and Parametric Studies using the Buckingham π -Theorem T2 - Deutsche Gesellschaft für Akustik e.V. (ed.), AIA-DAGA N2 - In order to set up guidelines for the design of light-weighted ceilings for timber constructions to be used by engineers in practice, investigations based on both measurements and numerical models have been carried out [1, 2, 3]. The setup and the calibration of the numerical model of the structure are outlined briefly. A semi-analytical approach for the prediction of radiated sound is presented, which is based on Integral Transform Methods. The method can be applied in the post processing of a Finite Element computation. Thus as a first step the structure, consisting of a timber slab, a floating floor and a suspended ceiling, is built up in a Finite Element model, where the material properties of wood and the characteristics of the system are considered. The model is parameterized in order to enable computations with varying geometry and material parameters and calibrated with the help of measurements using model updating techniques. The velocity pattern resulting out of the FEM computation is transformed from the spatial into the wavenumber domain and from the time into the frequency domain using Fourier Transform Methods. Applying this velocity pattern as a boundary condition to the Helmholtz Equation, which results out of the Fourier Transform of the wave equation, the wavenumbers, which fulfil the radiation condition, can be selected and the pressure field in the adjacent acoustic fluid can be computed. Due to the properties of the Fourier-Transform the radiated sound power can be calculated efficiently in the transformed domain out of pressure and velocity. In a second part of the contribution the model for the air cushion in the suspended ceiling is discussed, where a FSI-model for the acoustic fluid and the structure is compared against engineering approaches using simplifications concerning mass distribution and transfer impedances between the individual nodes at the interface KW - Schallmesstechnik KW - Holzbau Y1 - 2013 ER - TY - CHAP A1 - Kohrmann, M. A1 - Buchschmid, M. A1 - Müller, G. A1 - Völtl, R. A1 - Schanda, Ulrich T1 - Numerical models for the prediction of vibroacoustical characteristics of light-weighted ceilings T2 - Internoise 2013 N2 - In order to set up guidelines for the design of light-weighted ceilings for timber constructions to be used by engineers in practice, investigations based on both measurements and numerical models have been carried out within the cooperative research project “VibWood”. In this contribution the setup and the calibration of the numerical model of the structure as well as the prediction of radiated sound are discussed, where a special focus is set on a dimensionless description in order to deduce information for a wide range of system’s specifications. The structure, consisting of a timber slab, a floating floor and a suspended ceiling, is built up in a Finite Element model, where the material properties of wood and the characteristics of the system (e.g.support conditions, contact phenomena dynamic properties of individual parts) are considered. The model is parameterized in order to enable computations with varying geometry and material parameters. After calibrating the FE-model with the help of measurements using model updating techniques dimensionless parameters are defined based on the Buckingham-π- Theorem and computations are carried out in order to specify guidelines for various systems. The radiation of sound is computed in a post processing using Integral Transform Methods. KW - Schallmesstechnik KW - Holzbau Y1 - 2013 ER - TY - CHAP A1 - Völtl, R. A1 - Schanda, Ulrich A1 - Kohrmann, M. A1 - Buchschmid, M. A1 - Müller, G. T1 - Simultaneous operational vibration analysis of different layers of lightweight timber floors T2 - Internoise 2013 N2 - Within the scope of the research project "VibWood", operational vibration analyses of timber floor constructions were carried out. In order to understand the vibration behaviour of and the sound transmission through the layers of the constructions the coupling between them was investigated. The transfer function from the point of excitation to a pattern of receiving positions located on each of the layers of the construction was measured using a swept sine excitation. As a result, the frequency range of decoupling between the base floor and the floating floor and between the base floor and the suspended ceiling could be identified and the individual vibration behavior analyzed. The measurements also included the radiated sound power from the suspended ceiling. There is indication that there is not necessarily a correlation between the eigenmodes of the suspended ceiling and the maxima of the radiated sound power KW - Schallmesstechnik KW - Holzbau Y1 - 2018 ER - TY - CHAP A1 - Völtl, R. A1 - Kohrmann, M. A1 - Schanda, Ulrich A1 - Buchschmid, M. A1 - Müller, G. T1 - Messung und Berechnung der Schwingungen von Holzdecken im Prüfstand T2 - Deutsche Gesellschaft für Akustik e.V. DAGA N2 - Im Rahmen des AIF-Forschungsprojektes VibWood werden im Deckenprüfstand der HS Rosenheim unterschiedliche Holzdeckenkonstruktionen hinsichtlich ihres Schwingungsverhaltens im Bereich zwischen 4 Hz und 200 Hz untersucht. Parallel dazu werden diese Holzdeckenkonstruktionen an der TU München mittels FE-Berechnungen modelliert. Für die Untersuchungen steht ein Prüfstand zur Verfügung, welcher die Möglichkeit bietet, Decken oder Deckenelemente mit Abmessungen von max. 5,5 m x 5,5 m auf einer Stahlwinkelkonsole aufzulagern. Die Deckenelemente können so durch Messung der Übertragungsfunktionen hinsichtlich ihrer Schwingungsformen untersucht werden. Ein Ziel der Untersuchungen ist es, die tieffrequenten Schwingungen von Holzdecken mit Hilfe von Schwingungstilgern deutlich zu reduzieren. Es werden erste Ergebnisse der Validierung der FE-Modelle vorgestellt, insbesondere der Einfluss der Auflagerung der Deckenelemente auf die Übertragungsfunktion. Weiterhin werden Messergebnisse für unterschiedliche Anregungsarten diskutiert KW - Holzbau KW - Schallmesstechnik Y1 - 2012 ER - TY - CHAP A1 - Zentgraf, Peter A1 - Berge, S. A1 - Chasset, C. A1 - Filippi, H. A1 - Gottzein, E. A1 - Gutiérrez-Cañas, I. A1 - Hartrampf, M. A1 - Krauss, P. A. A1 - Kuehl, C. A1 - Lübke- Ossenbeck, B. A1 - Mittnacht, M. A1 - Montenbruck, O. A1 - Müller, C. A1 - Rueda Boldo, P. A1 - Truffi, A. ED - American Astronautical Society, T1 - PREPARING THE GPS-EXPERIMENT FOR THE SMALL GEO MISSION T2 - 33rd ANNUAL AAS GUIDANCE AND CONTROL CONFERENCE N2 - This paper deals with the preparation of the Small GEO mission and the accommodation of a GPS receiver as an experiment. The expected benefits of using the GPS receiver for Small GEO are explained. The feasibility of using GPS for position determination is investigated by simulation using a MosaicGNSS receiver, which was stimulated by a Spirent RF signal generator. A procedure, how to evaluate flight data on ground is outlined. Success criteria of the experiment and the minimal size of the downlink stream required and reserved for the receiver TM are presented. KW - GPS KW - geosynchronous mission KW - Small GEO telecommunications satellite Y1 - 2018 ER - TY - JOUR A1 - Fürböck, C. A1 - Litzenberger, M. A1 - Pogany, D. A1 - Gornik, E. A1 - Seliger, Norbert A1 - Müller-Lynch, T. A1 - Stecher, M. A1 - Goßner, H. A1 - Werner, W. T1 - Laser interferometric method for ns-time scale thermal mapping of Smart Power ESD protection devices during ESD stress JF - Microelectronics Reliability Y1 - 2023 U6 - https://doi.org/10.1016/S0026-2714(99)00124-9 SN - 0026-2714 VL - 39 IS - 6 SP - 925 EP - 930 ER - TY - JOUR A1 - Pogany, D. A1 - Seliger, Norbert A1 - Litzenberger, M. A1 - Gossner, H. A1 - Stecher, M. A1 - Müller-Lynch, T. A1 - Werner, W. A1 - Gornik, E. T1 - Damage analysis in smart-power technology electrostatic discharge (ESD) protection devices JF - Microelectronics Reliability Y1 - 2023 U6 - https://doi.org/10.1016/S0026-2714(99)00162-6 SN - 0026-2714 VL - 39 IS - 6 SP - 1143 EP - 1148 ER - TY - CHAP A1 - Fürböck, C. A1 - Pogany, D. A1 - Litzenberger, M. A1 - Gornik, E. A1 - Seliger, Norbert A1 - Gossner, H. A1 - Müller-Lynch, T. A1 - Stecher, M. A1 - Werner, W. T1 - Interferometric temperature mapping during ESD stress and failure analysis of smart power technology ESD protection devices T2 - Electrical Overstress/Electrostatic Discharge Symposium Proceedings KW - ESD KW - smart power device Y1 - 2023 U6 - https://doi.org/10.1109/EOSESD.1999.819067 SP - 241 EP - 250 PB - IEEE ER - TY - JOUR A1 - Fürböck, C. A1 - Pogany, D. A1 - Litzenberger, M. A1 - Gornik, E. A1 - Seliger, Norbert A1 - Gossner, H. A1 - Müller-Lynch, T. A1 - Stecher, M. A1 - Werner, W. T1 - Interferometric temperature mapping during ESD stress and failure analysis of smart power technology ESD protection devices JF - Journal of Electrostatics KW - ESD KW - smart power device Y1 - 2023 VL - 49 SP - 195 EP - 213 ER - TY - RPRT A1 - Kohrmann, M. A1 - Völtl, R. A1 - Müller, G. A1 - Schanda, Ulrich A1 - Buchschmid, M. T1 - Abschlussbericht zum AiF Forschungsvorhaben "VibWood". Planungshilfen zur schall- und schwingungstechnischen Beschreibung von Holzdecken und zur Bewertung und Dimensionierung von angepassen Schwingungsschutzsystemen KW - Holzbau KW - Schallmesstechnik KW - Finite-Elemente Methode (FEM) KW - Schallschutz KW - Deckenschwingungen KW - Brettsperrholz KW - Holzbalkendecke KW - Betriebsschwinganalyse KW - Schwingungstilger KW - Körperschall KW - Elastomer KW - Schallabstrahlung KW - Modalanalyse KW - Schallleistung KW - Trittschall KW - Schwingungsnachweis Y1 - 2014 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:861-opus4-5235 ER - TY - JOUR A1 - Müller, Martin A1 - Grill, E. A1 - Stier-Jarmer, M. A1 - Strobl, R. A1 - Gutenbrunner, C. A1 - Fialka-Moser, V. A1 - Stucki, G. ED - Foundation of Rehabilitation Information, T1 - Validation of the comprehensive ICF Core Sets for patients receiving rehabilitation interventions in the acute care setting JF - Journal of rehabilitation medicine N2 - Objective: To examine the relevance and completeness of the comprehensive International Classification of Functioning, Disability and Health (ICF) Core Sets for patients with rehabilitation needs in acute hospital care. Design: Multi-centre cohort study. Patients: A total of 391 patients (50.1% female, mean age 63.4 years) from 4 university hospitals in Austria, Germany and Switzerland and one Austrian general hospital. Methods: Data on functioning were collected using the respective comprehensive acute ICF Core Sets. Data were extracted from patients' medical record sheets and interviews with health professionals and patients. Results: Most of the categories of the comprehensive ICF Core Sets describing impairments, limitations or restrictions occurred in a considerable proportion of the study population. The most outstanding limitations and restrictions of the patients were problems with sleep and blood vessel functions, walking and moving and self-care. Thirty-eight aspects of functioning not previously covered by the comprehensive ICF Core Sets were ranked as relevant. Conclusion: Categories of the comprehensive ICF Core Sets for the acute hospital situation were confirmed. Some additional categories not covered by the Set in its present version emerged from the interviews, and should be considered for inclusion in a finalized version. KW - Classification KW - Cohort study KW - ICF KW - Intensive care KW - outcome assessment Y1 - 2011 IS - 43(2) ER - TY - JOUR A1 - Grill, E. A1 - Strobl, R. A1 - Müller, Martin A1 - Quittan, M. A1 - Kostanjsek, N. A1 - Stucki, G. ED - Foundation of Rehabilitation Information, T1 - ICF Core Sets for early post-acute rehabilitation facilities JF - Journal of rehabilitation medicine N2 - Objective: To identify candidate categories for International Classification of Functioning, Disability and Health (ICF) Core Sets for the reporting and measurement of functioning in patients in early post-acute rehabilitation facilities. Design: Prospective multi-centre cohort study. Patients: Patients receiving rehabilitation interventions for musculoskeletal, neurological or cardiopulmonary injury or disease in early post-acute rehabilitation facilities. Methods: Functioning was coded using the ICF. The criterion for selecting candidate categories for the ICF Core Sets was based on their ability to discriminate between patients with high or low functioning status. Discrimination was assessed using multivariable regression models, the independent variables being all of the ICF categories of the respective comprehensive ICF Core Set. Analogue ratings of overall functioning as reported by patients and health professionals were used as dependent variables. Results: A total of 165 patients were included in the study (67 neurological, 37 cardiopulmonary, 61 musculoskeletal), mean age 67.5 years, 46.1% female. Selection yielded 38 categories for neurological, 32 for cardiopulmonary, and 31 for musculoskeletal. Conclusion: The present selection of categories can be considered an initial proposal, serving to identify the issues most relevant for the assessment and monitoring of functioning in patients undergoing early post-acute rehabilitation for neurological, cardiopulmonary, and musculoskeletal conditions. KW - Classification KW - Health status measurements KW - ICF KW - outcome assessment KW - regression analysis KW - Rehabilitation Y1 - 2011 IS - 43(2) ER - TY - JOUR A1 - Rabold, Andreas A1 - Buchschmied, M. A1 - Duster, A. A1 - Müller, G. A1 - Rank, E. T1 - Modelling the excitation force of a standard tapping machine on lightweight floor structures JF - Journal of building acustics N2 - Up to now the research and development in the field of building acoustics is based mainly on measurements. In consequence the development and optimization of a new building component is a very tedious and expensive task. A considerable reduction of these costs could be achieved, if the optimization relying on measurements would be replaced – at least to some extent – by a computational prediction model. For these models it is necessary to represent not only the component and the adjacent rooms but also the excitation in a suitable way. This paper gives an overview of models for the excitation generated by a standard tapping machine taking into account the interaction between the impacting steel cylinders of the tapping machine and the vibrating surface of the floor. KW - Tapping Machine KW - Lightweight floors Y1 - 2018 ER - TY - CHAP A1 - Müller, M. A1 - Schulze, Achim A1 - Isenberg, J. A1 - Hund, B. A1 - Beyer, H.-G. T1 - Influence of the water resistivity on the temperature coeffizients of industrial silicon solar cells and on the expected performance behavior T2 - Proceedings of the 25th EU-PVSEC KW - Photovoltaik KW - Industrial silicon solar cells KW - Performance behavior Y1 - 2010 ER -