@inproceedings{41422, author = {{Watson, Christina and Seifert, Andreas and König, Johannes}}, booktitle = {{EARLI SIG 11 Conference „Teaching and Teacher education in an Era of Accounta-bility – What do we know and what do we need to know?}}, location = {{Bergen}}, title = {{{On the impact of institutional factors on general pedagogical knowledge.}}}, year = {{2012}}, } @inproceedings{40085, author = {{Hellmich, Frank and Koch, Katja and Hardy, Ilonka}}, title = {{{Moderation des Symposiums "Entwicklung und Förderung von Kindern mit Zuwanderungsgeschichte im Vor- und Grundschulalter". Symposium auf dem 23. Kongress der Deutschen Gesellschaft für Erziehungswissenschaft (DGfE)}}}, year = {{2012}}, } @inproceedings{38204, author = {{Förster, Sabrina and Hoya, Fabian Karl and Hellmich, Frank}}, publisher = {{Universität Erlangen-Nürnberg}}, title = {{{Wirksamkeit eines wortschatzbasierten Lesestrategietrainings auf Lesekompetenzen von Grundschulkindern mit Deutsch als Zweitsprache. Vortrag auf der 21. Jahrestagung der Kommission „Grundschulforschung und Pädagogik der Primarstufe“ der Deutschen Gesellschaft für Erziehungswissenschaft (DGfE, Sektion Schulpädagogik)}}}, year = {{2012}}, } @inproceedings{38206, author = {{Hoya, Fabian Karl and Förster, Sabrina and Hellmich, Frank}}, publisher = {{Universität Erlangen-Nürnberg}}, title = {{{Entwicklung diagnostischer Fähigkeiten bei Lehramtsstudierenden – Ergebnisse aus einer Trendstudie. Posterpräsentation auf der 21. Jahrestagung der Kommission „Grundschulforschung und Pädagogik der Primarstufe“ der Deutschen Gesellschaft für Erziehungswissenschaft (DGfE, Sektion Schulpädagogik)}}}, year = {{2012}}, } @inproceedings{38203, author = {{Hellmich, Frank and Förster, Sabrina}}, title = {{{Leseförderung durch ein wortschatzbasiertes Lesestrategietraining – Vorstellung eines evaluierten Konzepts für Kinder mit Deutsch als Zweitsprache. Vortrag auf der Tagung der Deutschen Gesellschaft für Lesen und Schreiben (DGLS)}}}, year = {{2012}}, } @inproceedings{38207, author = {{Hellmich, Frank}}, publisher = {{Universität Rostock}}, title = {{{Rückmeldungen im Unterricht und Kompetenzerwerb in der Grundschule}}}, year = {{2012}}, } @inproceedings{38205, author = {{Hellmich, Frank}}, publisher = {{Universität Regensburg}}, title = {{{Rückmeldungen und Lernprozesse im Grundschulunterricht}}}, year = {{2012}}, } @article{26068, author = {{Luo, Kai Hong and Huang, Bo-Qiang and Zheng, Wei-Mou and Wu, Ling-An}}, issn = {{0256-307X}}, journal = {{Chinese Physics Letters}}, title = {{{Nonlocal Imaging by Conditional Averaging of Random Reference Measurements}}}, doi = {{10.1088/0256-307x/29/7/074216}}, year = {{2012}}, } @article{40351, author = {{Wallmeier, Nadine}}, journal = {{Korrespondenz­blatt des Vereins für niederdeutsche Sprachforschung}}, number = {{2}}, pages = {{45--56}}, title = {{{Tagungsbericht: 125. Jahresversammlung des Vereins für niederdeutsche Sprachforschung in Göttingen. }}}, volume = {{119}}, year = {{2012}}, } @inbook{40080, author = {{Tenberge, Claudia and Lange, Kim and Möller, Kornalia }}, booktitle = {{Bedingungen des Lehrens und Lernens in der Grundschule – Bilanz und Perspektiven. }}, editor = {{Hellmich, Frank and Hoya, Fabian}}, title = {{{„Praktische Aktivitäten“ im physikbezogenen Sachunterricht der Grundschule und im physikalischen Anfangsunterricht der Sekundarstufe – ein Vergleich. }}}, year = {{2012}}, } @inbook{36552, abstract = {{Debatten um Geschlecht und Diversity in der Sozialen Arbeit bewegen sich im Spannungsfeld zwischen theoretisch anspruchsvollen, z.T. aber unverbundenen Debatten und professionsbestimmenden fachlichen Ansätzen ohne Bezug zu Differenz. In der Praxis sozialpädagogischer Einrichtungen finden sich sowohl differenzsensible als auch essentialisierende und verallgemeinernde wie differenzblinde Konzepte. Der Sammelband bietet zunächst eine Übersicht über die theoretischen Diskurse zu Geschlecht, Diversität und Intersektionalität und einen Versuch, diese zueinander in Bezug zu setzen. Im zweiten Teil stellt er sich der Herausforderung, zentrale Ansätze der Sozialen Arbeit auf die Konsequenzen ihrer Ausblendung von Geschlecht u.a. sozialen Differenzen hin zu analysieren. Auf dieser Grundlage werden Ansätze für ihre differenzsensible Weiterentwicklung entworfen. Der dritte Teil widmet sich der Analyse des komplexen Verhältnisses zwischen Fokussierung bzw. Ausblendung von Differenzen und ihren jeweiligen Folgen in praktischer Sozialer Arbeit. }}, author = {{Landhäußer, Sandra}}, booktitle = {{Soziale Arbeit und Geschlecht. Herausforderungen jenseits von Universalisierung und Essentialisierung.}}, editor = {{Bütow, Birgit and Munsch, Chantal}}, isbn = {{978-3-89691-234-3}}, pages = {{128--141}}, publisher = {{Westphälisches Dampfboot}}, title = {{{Sozialräumlich orientierte Soziale Arbeit – Eine Spurensuche nach der Kategorie Gender}}}, year = {{2012}}, } @article{40806, abstract = {{This work reports on the implementation of different absorption micro-filters based on a dye-doped hybrid organic-inorganic xerogel polymeric material synthesized by the sol-gel process. Microstructures containing eight different filter widths were fabricated in polydimethylsiloxane (PDMS), bonded to glass substrates and filled with the corresponding dye doped polymeric material by a soft lithography approach. The filtering capacity as a function of dye concentration and filter width was studied and revealed a linear dependence with both parameters, as expected according to the Beer-Lambert law. Zero passband transmittance values and relatively sharp stopband regions were achieved with all the filters, also showing rejection levels between ?6 dB and ?55 dB. Finally, such filters were monolithically integrated into a disposable fluorescence-based photonic lab-on-a-chip (PhLoC) approach. Calibration curves carried out with a model fluorophore target analyte showed an over two-fold increase in sensitivity and a thirty-fold decrease of the limit of detection (LOD) compared with the values recorded using the same PhLoC system but without the polymeric filter structure. The results presented herein clearly indicate the feasibility of these xerogel-based absorbance filtering structures for being applied as low-cost optical components that can be easily incorporated into disposable fluorescence-based photonic lab on a chip systems}}, author = {{Carregal-Romero, Ester and Fernandez-Sanchez, Cesar and Eguizabal, Alma and Demming, Stefanie and Büttgenbach, Stephanus and Llobera, Andreu}}, journal = {{Opt. Express}}, number = {{21}}, pages = {{23700–23719}}, title = {{{Development and integration of xerogel polymeric absorbance micro-filters into lab-onchip systems}}}, doi = {{10.1364/OE.20.023700}}, volume = {{20}}, year = {{2012}}, } @inproceedings{40809, abstract = {{Interference alignment (IA) has been shown to achieve the maximum degrees of freedom in the multiple-input multiple-output (MIMO) K-user interference channel (IFC). In the presence of frequency-selective channels, orthogonal frequency-division multiplexing (OFDM) is typically used to deal with the multipath nature of the channel. While IA techniques can be applied in a per-subcarrier basis (post-FFT), the existence of symbol timing offsets (STOs) between the desired and the interfering OFDM symbols decreases the system performance dramatically. To solve this problem, we design pre-FFT precoders and decoders for single-beam MIMO IFCs for OFDM transmissions. Since the IA decoders operate before the FFT, they mitigate the interference before synchronization takes place. We show that our proposed scheme improves the system performance when STOs occur, in comparison with traditional post-FFT IA techniques. We provide simulation results to compare post- and pre-FFT beamforming techniques and to illustrate the performance of the proposed method.}}, author = {{Lameiro, Christian and Vía, Javier and Santamaría, Ignacio and Heath Jr., Robert W.}}, booktitle = {{Proc. Int. Symp. Wireless Comm. Syst.}}, title = {{{Pre- and Post-FFT Interference Leakage Minimization for MIMO OFDM Networks}}}, doi = {{10.1109/ISWCS.2012.6328429}}, year = {{2012}}, } @inproceedings{40813, abstract = {{In this paper, the problem of multiantenna spectrum sensing in cognitive radio (CR) is addressed within a Bayesian framework. Unlike previous works, our Bayesian model places priors directly on the spatial covariance matrices under both hypotheses, as well as on the probability of channel occupancy. Specifically, we use inverse-gamma and complex inverse-Wishart distributions as conjugate priors for the null and alternative hypotheses, respectively; and a Bernoulli distribution as the prior for channel occupancy. At each sensing period, Bayesian inference is applied and the posterior of channel occupancy is thresholded for detection. After a suitable approximation, the posteriors are employed as priors for the next sensing frame, which can be beneficial in slowly time-varying environments. By means of simulations, the proposed detector is shown to outperform the Generalized Likelihood Ratio Test (GLRT) detector.}}, author = {{Manco-Vásquez, J. and Lazaro-Gredilla, M. and Ramírez, D. and Vía, J. and Santamaría, I.}}, booktitle = {{Proc.\ IEEE Sensor Array and Multichannel Signal Process. Work.}}, title = {{{Bayesian Multiantenna Sensing for Cognitive Radio}}}, doi = {{10.1109/SAM.2012.6250566}}, year = {{2012}}, } @inproceedings{40814, abstract = {{In this paper we propose an efficient transmission strategy for the two-way relay channel (TWRC) with multiple relays, when these are multiple-input multiple-output (MIMO) transceivers that apply the amplify-and-forward (AF) protocol. Although the optimal beamforming strategy is known, it requires a central node, with channel state information (CSI) of the entire network, to compute all the beamforming matrices, which is impractical. To reduce the overhead, in this paper we present a distributed algorithm for the computation of the relay beamforming matrices. The proposed algorithm divides the problem in two stages. First, each relay computes its own beamforming matrix in parallel using only local CSI. Next, a distributed beamforming is applied to make the signals add up coherently at the nodes. Although the proposed algorithm is suboptimal, we show through simulations that it performs very close to the optimal achievable rate region.}}, author = {{Lameiro, Christian and Vía, Javier and Santamaría, Ignacio}}, booktitle = {{Proc.\ IEEE Sensor Array and Multichannel Signal Process. Work.}}, title = {{{A Distributed Algorithm for Two-Way Multiple-Relay Networks}}}, doi = {{10.1109/SAM.2012.6250440}}, year = {{2012}}, } @inproceedings{40816, abstract = {{Textural analysis of tissue scattering images is proposed for healthy versus tumor discrimination. Scattering center density varies from normal to tumor tissues and this variation is translated into different textures in the scattering power map. Adipose tissue shows low autocorrelation values while tumor tissues present higher entropies than normal tissue. Consequently, a combination of autocorrelation and entropy values allows ready tissue discrimination by a supervised linear classifier. The proposed approach has been validated over a set of 29 breast tissue samples achieving a sensitivity of 73.59% and specificity of 82.40%.}}, author = {{Eguizabal, Alma and Laughney, Ashley M. and Garcia-Allende, P. Beatriz and Krishnaswamy, Venkataramanan and Wells, Wendy A. and Paulsen, Keith D. and Pogue, Brian W. and Lopez-Higuera, Jose M. and Conde, Olga M.}}, booktitle = {{IEEE 9th International Symposium on Biomedical Imaging}}, title = {{{Textural analysis of optical scattering for identification of cancer in breast surgical specimens}}}, year = {{2012}}, } @inproceedings{40815, abstract = {{A surgeon-guided independent component analysis from optical reflectance measurements is proposed for breast tumor delineation. Independent Component Analysis is first applied to extract the most relevant features from local measures of broadband reflectance and then a tumor probability indicator is obtained and provided utilizing surgeon assistance to resolve the inherent ambiguities in the independent component calculation. A set of 29 breast tissue samples have been diagnosed achieving a sensitivity of 90.57%, and specificity of 93.98%.}}, author = {{Eguizabal, Alma and Laughney, Ashley M. and Garcia-Allende, P. Beatriz and Krishnaswamy, Venkataramanan and Wells, Wendy A. and Paulsen, Keith D. and Pogue, Brian W. and Lopez-Higuera, Jose M. and Conde, Olga M.}}, booktitle = {{IEEE 9th International Symposium on Biomedical Imaging}}, title = {{{ICA-guided delineation of breast cancer pathology}}}, year = {{2012}}, } @inproceedings{40803, abstract = {{This paper considers nonlinear dynamical networks consisting of individually iISS (integral input-to-statestable) subsystems which are not necessarily ISS (input-to-statestable). Stability criteria for internal and external stability of the networks are developed in view of both necessity and sufficiency. For the sufficiency, we show how we can construct a Lyapunov function of the network explicitly under the assumption that a cyclic small-gain condition is satisfied. The cyclic small-gain condition is shown to be equivalent to a matrix-like condition. The two conditions and their equivalence precisely generalize some central ISS results in the literature. Moreover, the necessity of the matrix-like condition is established. The allowable number of non-ISS subsystems for stability of the network is discussed through several necessity conditions.}}, author = {{Ito, Hiroshi and Jiang, Zhong-Ping and Dashkovskiy, Sergey N. and Rüffer, Björn S.}}, booktitle = {{Proc. 51st IEEE Conf. Decis. Control}}, pages = {{4158–4164}}, title = {{{A cyclic small-gain condition and an equivalent matrix-like criterion for iISS networks}}}, year = {{2012}}, } @inproceedings{40802, abstract = {{This invited paper is a significantly shortened excerpt of the article S. N. DASHKOVSKIY, B. S. RÜFFER, AND F. R. WIRTH, Small gain theorems for large scale systems and construction of ISS Lyapunov functions, SIAM J. Control Optim., 48 (2010), pp. 4089–4118. We consider interconnections of n nonlinear subsystems in the input-to-state stability (ISS) framework. Foreach subsystem an ISS Lyapunov function is given that treats the other subsystems as independent inputs. A gain matrix is used to encode the mutual dependencies of the systems in the network. Under a small gain assumption on the monotone operator induced by the gain matrix, a locally Lipschitz continuous ISS Lyapunov function is obtained constructively for the entire network by appropriately scaling the individualLyapunov functions for the subsystems.}}, author = {{Dashkovskiy, Sergey N. and Rüffer, Björn S. and Wirth, Fabian R.}}, booktitle = {{Proc. 51st IEEE Conf. Decis. Control}}, pages = {{4165–4170}}, title = {{{Small gain theorems for large scale systems and construction of ISS Lyapunov functions}}}, year = {{2012}}, } @article{40165, author = {{Shayovitz, Dror and Herrmann, Harald and Sohler, Wolfgang and Ricken, Raimund and Silberhorn, Christine and Marom, Dan M.}}, issn = {{1094-4087}}, journal = {{Optics Express}}, keywords = {{Atomic and Molecular Physics, and Optics}}, number = {{24}}, publisher = {{The Optical Society}}, title = {{{High resolution time-to-space conversion of sub-picosecond pulses at 155µm by non-degenerate SFG in PPLN crystal}}}, doi = {{10.1364/oe.20.027388}}, volume = {{20}}, year = {{2012}}, }