@article{ShrenaEiseleBardongetal.,
  author    = {Shrena, Ismail and Eisele, David and Bardong, Jochen and Mayer, Elena and Reindl, Leonhard Michael},
  title     = {High-precision signal processing algorithm to evaluate SAW properties as a function of temperature},
  series = {IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control},
  volume    = {60},
  number    = {4},
  organization    = {IEEE},
  issn      = {0885-3010},
  doi       = {10.1109/TUFFC.2013.2629},
  pages     = {805 -- 813},
  abstract  = {This paper presents a signal processing algorithm which accurately evaluates the SAW properties of a substrate as functions of temperature. The investigated acoustic properties are group velocity, phase velocity, propagation loss, and coupling coefficient. With several measurements carried out at different temperatures, we obtain the temperature dependency of the SAW properties. The analysis algorithm starts by reading the transfer functions of short and long delay lines. The analysis algorithm determines the center frequency of the delay lines and obtains the delay time difference between the short and long delay lines. The extracted parameters are then used to calculate the acoustic properties of the SAW material. To validate the algorithm, its accuracy is studied by determining the error in the calculating delay time difference, center frequency, and group velocity.},
  language  = {en}
}
@article{PanyFalkRiedletal.,
  author    = {Pany, Thomas and Falk, Nico and Riedl, Bernhard and St{\"o}ber, Carsten and Winkel, J{\´o}n O. and Schimpl, Franz-Josef},
  title     = {Innovation: Under Cover: Synthetic-Aperture GNSS Signal Processing},
  series = {GPS World},
  volume    = {24},
  number    = {9},
  issn      = {1048-5104},
  pages     = {42 -- 50},
  abstract  = {Researchers are developing new GNSS receivers and antennas based on an innovative signal-processing scheme to significantly improve GNSS tracking reliability and accuracy under degraded signal conditions. It is based on the principles of synthetic-aperture radar. Like in a multi-antenna phased array receiver, GNSS signals from different spatial locations are combined coherently forming an optimized synthetic antenna-gain pattern. The method is implemented in a real-time PC-based software receiver and works with GPS, GLONASS, and Galileo signals. Multiple frequencies are generally supported. The idea of synthetic-aperture processing is realized as a coherent summation of correlation values of each satellite over the so-called beamforming interval. Each correlation value is multiplied with a phase factor. For example, the phase factor can be chosen to compensate for the relative antenna motion over the beam-forming interval and the resulting sum of the scaled correlation values represents a coherent correlation value maximizing the line of sight signal power.},
  language  = {en}
}
@inproceedings{MierauFeyKohrsetal.,
  author    = {Mierau, Michael and Fey, Simon and Kohrs, Robert and Wittwer, Christof},
  title     = {Communication solutions for a cloud-based charging management system for a fleet of shared-use electric vehicles},
  series = {World Electric Vehicle Journal},
  volume    = {6},
  number    = {5},
  isbn      = {978-1-4799-3832-2},
  issn      = {2032-6653},
  doi       = {10.3390/wevj6041125},
  pages     = {1125 -- 1135},
  abstract  = {The paper proposes a system architecture for charging infrastructure that serves the requirements of future fleets of shared-use electric vehicles in urban scenarios. The focus of the development is on the interfaces to central stakeholders such as mobility service providers, distribution network operators and utilities. The main concept of the proposed system is the adherence to a stringent resource-oriented design approach, following the design principles of the Representational State Transfer (REST) architectural software style for distributed systems. This design approach is used from the cloud-based services down to the implementation of the charging infrastructure's control algorithms. Focusing on the resources of the various entities simplifies the implementation of their interactions, compared to the explicit declaration of services that are available. The system design ensures that the charging infrastructure is open to all users and generates a benefit beyond basic charging operations. Integration in emerging smart markets is done via open web-based interfaces. These allow for the generation of an added value of concrete services for shared-use electric mobility. A link to the field of grid operation is proposed using the ISO/IEC 61850 telecontrol standard. The smart meter capabilities of the charging stations can be used to gain additional information on the current state of the distribution grid. As an exemplary service a load management service for a fleet of shared-use electric vehicles is going to be implemented.},
  language  = {en}
}
@article{OrtegaClaveroWeberSchroederetal.,
  author    = {Ortega Clavero, Valentin and Weber, Andreas and Schr{\"o}der, Werner and Meyrueis, Patrick L.},
  title     = {Qualitative and Quantitative Spectral Analysis of Binary Gasoline-Ethanol Blends Using a Low-Cost FT-Raman Spectrometer Prototype},
  series = {Lasers in Engineering : LIE},
  volume    = {25},
  number    = {3/4},
  publisher = {Gordon and Breach},
  issn      = {0898-1507},
  pages     = {247 -- 253},
  abstract  = {Raman spectra from three different binary gasoline-ethanol blends (with ratios 95:5, 90:10, and 85:15) have been obtained by using a low-cost, frequency precise Fourier-transform Raman spectrometer (FT-Raman) prototype. The spectral information is presented in the range of 0 to 3500 cm-1 with a resolution of 1.66 cm-1, which is greater than the required for most liquid and solid chemical samples. This set-up delivers spectral information about the sample with a reduced spectral deviation compared to theoretical values (less than 0.4 cm-1 without compensation for instrumental response). The robust and highly fexible FT-Raman prototype presented for the spectral analysis, consisting mainly of a Michelson interferometer and a self-designed photon counter, is able to deliver high resolution and frequency precise Raman spectra from the gasoline-ethanol blends comparable to the obtained by using commercial devices. This FT-Raman set-up does not need additional complex hardware or software control and relies on re-sampling and interpolation algorithms. The qualitative spectral information obtained has been used to calculate the proportion of gasoline and ethanol present in the used chemical samples without using extra calibrations methods or chemical markers.},
  language  = {en}
}
@article{BeckerBluemleMomeni,
  author    = {Becker, Axel and Bl{\"u}mle, Anette and Momeni, Arash},
  title     = {Evidence-Based Plastic and Reconstructive Surgery: Developments over Two Decades},
  series = {Plastic and Reconstructive Surgery},
  volume    = {132},
  number    = {4},
  issn      = {0032-1052},
  doi       = {10.1097/PRS.0b013e31829fe0f7},
  pages     = {657e -- 663e},
  abstract  = {Background: Increasing awareness of the importance of evidence-based medicine is demonstrated not only by an increasing number of articles addressing it but also by a specialty-wide evidence-based medicine initiative. The authors critically analyzed the quality of reporting of randomized controlled trials published in this Journal over a 21-year period (1990 to 2010). Methods: A hand search was conducted, including all issues of Plastic and Reconstructive Surgery from January of 1990 to December of 2010. All randomized controlled trials published during this time period were identified with the Cochrane decision tree for identification of randomized controlled trials. To assess the quality of reporting, a modification of the checklist of the Consolidated Standard of Reporting Trials Statement was used. Results: Of 7121 original articles published from 1990 to 2010 in the Journal, 159 (2.23 percent) met the Cochrane criteria. A significant increase in the absolute number of randomized controlled trials was seen over the study period (p < 0.0001). The median quality of these trials from 1990 to 2010 was "fair," with a trend toward improved quality of reporting over time (p = 0.127). Conclusions: A favorable trend is seen with respect to an increased number of published randomized controlled trials in Plastic and Reconstructive Surgery. Adherence to standard reporting guidelines is recommended, however, to further improve the quality of reporting. Consideration may be given to providing information regarding the quality of reporting in addition to the "level of evidence pyramid," thus facilitating critical appraisal.},
  language  = {en}
}
@inproceedings{HeinkeIsmerKuehnertetal.,
  author    = {Heinke, Matthias and Ismer, Bruno and K{\"u}hnert, Helmut and Gorißen, Bernhard and M{\"u}ller, D. and Dannberg, Gudrun and Figulla, Hans Reiner},
  title     = {Left ventricular conduction delay and biventricular pacing delay in cardiac resynchronisation therapy responder and non-responder},
  series = {Europace : EHRA EUROPACE 2013, 23 Jun 2013-26 Jun 2013, Athens-Greece, Abstracts},
  volume    = {15},
  number    = {Suppl. 2},
  organization    = {European Society of Cardiology},
  issn      = {1099-5129},
  pages     = {P1240},
  language  = {en}
}
@article{SalvalaiPfafferottSesana,
  author    = {Salvalai, Graziano and Pfafferott, Jens and Sesana, Marta Maria},
  title     = {Assessing energy and thermal comfort of different low-energy cooling concepts for non-residential buildings},
  series = {Energy Conversion and Management},
  volume    = {76},
  publisher = {Elsevier},
  issn      = {0196-8904},
  doi       = {10.1016/j.enconman.2013.07.064},
  pages     = {332 -- 341},
  abstract  = {Energy consumption for cooling is growing dramatically. In the last years, electricity peak consumption grew significantly, switching from winter to summer in many EU countries. This is endangering the stability of electricity grids. This article outlines a comprehensive analysis of an office building performances in terms of energy consumption and thermal comfort (in accordance with static - ISO 7730:2005 - and adaptive thermal comfort criteria - EN 15251:2007 -) related to different cooling concepts in six different European climate zones. The work is based on a series of dynamic simulations carried out in the Trnsys 17 environment for a typical office building. The simulation study was accomplished for five cooling technologies: natural ventilation (NV), mechanical night ventilation (MV), fan-coils (FC), suspended ceiling panels (SCP), and concrete core conditioning (CCC) applied in Stockholm, Hamburg, Stuttgart, Milan, Rome, and Palermo. Under this premise, the authors propose a methodology for the evaluation of the cooling concepts taking into account both, thermal comfort and energy consumption.},
  language  = {en}
}
@article{MetzgerSeifert,
  author    = {Metzger, Mario and Seifert, Thomas},
  title     = {On the exploitation of Armstrong-Frederik type nonlinear kinematic hardening in the numerical integration and finite-element implementation of pressure dependent plasticity models},
  series = {Computational Mechanics},
  volume    = {52},
  number    = {3},
  publisher = {Springer},
  address   = {Berlin und Heidelberg},
  issn      = {0178-7675},
  doi       = {10.1007/s00466-012-0828-1},
  pages     = {515 -- 524},
  abstract  = {In this paper, an unconditionally stable algorithm for the numerical integration and finite-element implementation of a class of pressure dependent plasticity models with nonlinear isotropic and kinematic hardening is presented. Existing algorithms are improved in the sense that the number of equations to be solved iteratively is significantly reduced. This is achieved by exploitation of the structure of Armstrong-Frederik-type kinematic hardening laws. The consistent material tangent is derived analytically and compared to the numerically computed tangent in order to validate the implementation. The performance of the new algorithm is compared to an existing one that does not consider the possibility of reducing the number of unknowns to be iterated. The algorithm is used to implement a time and temperature dependent cast iron plasticity model, which is based on the pressure dependent Gurson model, in the finite-element program ABAQUS. The implementation is applied to compute stresses and strains in a large-scale finite-element model of a three cylinder engine block. This computation proofs the applicability of the algorithm in industrial practice that is of interest in applied sciences.},
  language  = {en}
}
@inproceedings{MetzgerNiewegSchweizeretal.,
  author    = {Metzger, Mario and Nieweg, Britta and Schweizer, Christoph and Seifert, Thomas},
  title     = {Lifetime prediction of cast iron materials under combined thermomechanical fatigue and high cycle fatigue loading using a mechanism-based model},
  series = {International Journal of Fatigue Proceedings of the 2nd International Workshop on Thermo-Mechanical Fatigue 2011},
  volume    = {53},
  publisher = {Elsevier},
  address   = {Oxford},
  issn      = {0142-1123},
  doi       = {10.1016/j.ijfatigue.2012.02.007},
  pages     = {58 -- 66},
  language  = {en}
}
@article{NeidhardtKeeBessler,
  author    = {Neidhardt, Jonathan Philipp and Kee, Robert J. and Bessler, Wolfgang G.},
  title     = {Electrode Reoxidation in Solid-Oxide Cells: Detailed Modeling of Nickel Oxide Film Growth},
  series = {ECS Transactions},
  volume    = {57},
  number    = {1},
  organization    = {Electrochemical Society},
  issn      = {1938-5862},
  doi       = {10.1149/05701.2573ecst},
  pages     = {2573 -- 2582},
  language  = {en}
}