TY - JOUR
AB - Abstract
Yttrium methoxyethoxide Y(OEtOMe)3 is an important precursor for the sol-gel preparation of Y2O3-containing materials. Its aggregation degree and the clusters, formed in solution of 2-methoxyethanol and modified by the ligands Hacac,
i
PrOH and THF are studied by means of EXAFS spectroscopy. The cluster geometries of the formed complexes deviate from the well-known cyclic decameric structure of the crystalline solid Y(OEtOMe)3. A pentanuclear square-pyramidal framework, which was found for Y(OEtOMe)3, dissolved in 2-methoxyethanol in a previous study, is confirmed by a detailed discussion of the structural EXAFS parameters. While the addition of the Lewis bases
i
PrOH and THF does not change the aggregation degree and short range order of Y(OEtOMe)3 in solution, chelating Hacac causes a stepwise degradation of the original pentameric metal framework. Details of the degradation pathway as deduced from the EXAFS results are given, which could not be achieved by any other spectroscopic method so far. The yttrium coordination number and third cumulants, which are necessary to account for asymmetry in the individual shells, are used in order to identify structural changes of the samples in comparison with the initially formed Y5-complex.
AU - Bauer, Matthias
AU - Bertagnolli, Helmut
ID - 41274
IS - 8
JF - Zeitschrift für Physikalische Chemie
KW - Physical and Theoretical Chemistry
SN - 2196-7156
TI - Alkoxide Clusters in Solution: An EXAFS Study of the Example Y(OEtOMe)3 and the Degradation Induced by Structural Modifiers
VL - 223
ER -
TY - JOUR
AU - Rabe, Volker
AU - Frey, Wolfgang
AU - Baro, Angelika
AU - Laschat, Sabine
AU - Bauer, Matthias
AU - Bertagnolli, Helmut
AU - Rajagopalan, Subramanian
AU - Asthalter, Tanja
AU - Roduner, Emil
AU - Dilger, Herbert
AU - Glaser, Thorsten
AU - Schnieders, David
ID - 41271
IS - 31
JF - European Journal of Inorganic Chemistry
KW - Inorganic Chemistry
SN - 1434-1948
TI - Syntheses, Crystal Structures, Spectroscopic Properties, and Catalytic Aerobic Oxidations of Novel Trinuclear Non‐Heme Iron Complexes
VL - 2009
ER -
TY - JOUR
AU - Guillerm, Vincent
AU - Gross, Silvia
AU - Serre, Christian
AU - Devic, Thomas
AU - Bauer, Matthias
AU - Férey, Gérard
ID - 41270
IS - 5
JF - Chem. Commun.
KW - Materials Chemistry
KW - Metals and Alloys
KW - Surfaces
KW - Coatings and Films
KW - General Chemistry
KW - Ceramics and Composites
KW - Electronic
KW - Optical and Magnetic Materials
KW - Catalysis
SN - 1359-7345
TI - A zirconium methacrylate oxocluster as precursor for the low-temperature synthesis of porous zirconium(iv) dicarboxylates
VL - 46
ER -
TY - JOUR
AU - Di Noto, Vito
AU - Boeer, Angelika B.
AU - Lavina, Sandra
AU - Muryn, Christopher A.
AU - Bauer, Matthias
AU - Timco, Grigore A.
AU - Negro, Enrico
AU - Rancan, Marzio
AU - Winpenny, Richard E. P.
AU - Gross, Silvia
ID - 41272
IS - 20
JF - Advanced Functional Materials
KW - Electrochemistry
KW - Condensed Matter Physics
KW - Biomaterials
KW - Electronic
KW - Optical and Magnetic Materials
SN - 1616-301X
TI - Functional Chromium Wheel-Based Hybrid Organic-Inorganic Materials for Dielectric Applications
VL - 19
ER -
TY - JOUR
AU - Bauer, Matthias
AU - Bertagnolli, Helmut
ID - 41275
IS - 13
JF - ChemPhysChem
KW - Physical and Theoretical Chemistry
KW - Atomic and Molecular Physics
KW - and Optics
SN - 1439-4235
TI - Towards X-Ray Absorption Spectroscopy in Real Time
VL - 10
ER -
TY - JOUR
AB - In order to learn and interact with humans, robots need to understand actions and make use of language in social interactions. The use of language for the learning of actions has been emphasized by Hirsh-Pasek and Golinkoff (MIT Press, 1996), introducing the idea of acoustic packaging. Accordingly, it has been suggested that acoustic information, typically in the form of narration, overlaps with action sequences and provides infants with a bottom-up guide to attend to relevant parts and to find structure within them. In this article, we present a computational model of the multimodal interplay of action and language in tutoring situations. For our purpose, we understand events as temporal intervals, which have to be segmented in both, the visual and the acoustic modality. Our acoustic packaging algorithm merges the segments from both modalities based on temporal overlap. First evaluation results show that acoustic packaging can provide a meaningful segmentation of action demonstration within tutoring behavior. We discuss our findings with regard to a meaningful action segmentation. Based on our future vision of acoustic packaging we point out a roadmap describing the further development of acoustic packaging and interactive scenarios it is employed in.
AU - Schillingmann, Lars
AU - Wrede, Britta
AU - Rohlfing, Katharina
ID - 17258
IS - 4
JF - IEEE Transactions on Autonomous Mental Development
SN - 1943-0612
TI - A Computational Model of Acoustic Packaging
VL - 1
ER -
TY - CONF
AB - Learning is a social endeavor, in which the learner generally receives support from his/her social partner(s). In developmental research – even though tutors/adults behavior modifications in their speech, gestures and motions have been extensively studied, studies barely consider the recipient’s (i.e. the child’s) perspective in the analysis of the adult’s presentation, In addition, the variability in parental behavior, i.e. the fact that not every parent modifies her/his behavior in the same way, found less fine-grained analysis. In contrast, in this paper, we assume an interactional perspective investigating the loop between the tutor’s and the learner’s actions. With this approach, we aim both at discovering the levels and features of variability and at achieving a better understanding of how they come about within the course of the interaction. For our analysis, we used a combination of (1) qualitative investigation derived from ethnomethodological Conversation Analysis (CA), (2) semi-automatic computational 2D hand tracking and (3) a mathematically based visualization of the data. Our analysis reveals that tutors not only shape their demonstrations differently with regard to the intended recipient per se (adult-directed vs. child-directed), but most importantly that the learner’s feedback during the presentation is consequential for the concrete ways in which the presentation is carried out.
AU - Pitsch, Karola
AU - Vollmer, Anna-Lisa
AU - Fritsch, Jannik
AU - Wrede, Britta
AU - Rohlfing, Katharina
AU - Sagerer, Gerhard
ID - 17259
KW - gaze
KW - gesture
KW - Multimodal
KW - adult-child interaction
T2 - Gesture and Speech in Interaction
TI - On the loop of action modification and the recipient's gaze in adult-child interaction
ER -
TY - JOUR
AB - A difficulty in robot action learning is that robots do not know where to attend when observing action demonstration. Inspired by human parent-infant interaction, we suggest that parental action demonstration to infants, called motionese, can scaffold robot learning as well as infants. Since infants knowledge about the context is limited, which is comparable to robots, parents are supposed to properly guide their attention by emphasizing the important aspects of the action. Our analysis employing a bottom-up attention model revealed that motionese has the effects of highlighting the initial and final states of the action, indicating significant state changes in it, and underlining the properties of objects used in the action. Suppression and addition of parents body movement and their frequent social signals to infants produced these effects. Our findings are discussed toward designing robots that can take advantage of parental teaching.
AU - Nagai, Yukie
AU - Rohlfing, Katharina
ID - 17262
IS - 1
JF - IEEE Transactions on Autonomous Mental Development
SN - 1943-0612
TI - Computational Analysis of Motionese Toward Scaffolding Robot Action Learning
VL - 1
ER -
TY - JOUR
AU - Lohse, Manja
AU - Hanheide, Marc
AU - Pitsch, Karola
AU - Rohlfing, Katharina
AU - Sagerer, Gerhard
ID - 17260
IS - 3
JF - Interaction Studies (Special Issue: Robots in the Wild: Exploring HRI in naturalistic environments)
SN - 1572-0381
TI - Improving HRI design by applying Systemic Interaction Analysis (SInA)
VL - 10
ER -
TY - CONF
AB - In developmental research, tutoring behavior has been identified as scaffolding infants’ learning processes. It has been defined in terms of child-directed speech (Motherese), child-directed motion (Motionese), and contingency. Contingency describes situations in which two agents socially interact with each other and Csibra and Gergely showed that contingency is a char- acteristic aspect of social interaction [3]. In the field of developmental robotics, research often assumes that in human-robot interaction (HRI), robots are treated similar to infants, because their immature cognitive capabilities benefit from this behavior. Here we present results con- cerning the acceptance of a robotic agent in a social learning scenario obtained via comparison to adults and 8-11 months old infants in equal conditions. These results constitute an important empirical basis for making use of tutoring behavior in social robotics. Our results reveal significant differences between Adult-Child Interaction (ACI), Adult-Adult Interaction (AAI) and Adult-Robot Interaction (ARI) in eye gaze behavior suggesting that contingency is impaired in the analyzed ARI situation.
AU - Lohan, Katrin Solveig
AU - Rohlfing, Katharina
AU - Wrede, Britta
ID - 17257
KW - Eyegaze
KW - tutoring situations
KW - Contingency
TI - Analysing the effect of contingency in tutoring situations
ER -
TY - CHAP
AU - Wrede, Britta
AU - Rohlfing, Katharina
AU - Hanheide, Marc
AU - Sagerer, Gerhard
ED - Sendhoff, B.
ED - Körner, Edgar
ED - Sporns, O.
ED - Ritter, Helge
ED - Doya, Kenji
ID - 17261
T2 - Creating Brain-Like Intelligence: From Basic Principles to Complex Intelligent Systems
TI - Towards Learning by Interacting
ER -
TY - CONF
AB - In developmental research, tutoring behavior has been identified as scaffolding infants' learning processes. It has been defined in terms of child-directed speech (Motherese), child-directed motion (Motionese), and contingency. In the field of developmental robotics, research often assumes that in human-robot interaction (HRI), robots are treated similar to infants, because their immature cognitive capabilities benefit from this behavior. However, according to our knowledge, it has barely been studied whether this is true and how exactly humans alter their behavior towards a robotic interaction partner. In this paper, we present results concerning the acceptance of a robotic agent in a social learning scenario obtained via comparison to adults and 8-11 months old infants in equal conditions. These results constitute an important empirical basis for making use of tutoring behavior in social robotics. In our study, we performed a detailed multimodal analysis of HRI in a tutoring situation using the example of a robot simulation equipped with a bottom-up saliency-based attention model. Our results reveal significant differences in hand movement velocity, motion pauses, range of motion, and eye gaze suggesting that for example adults decrease their hand movement velocity in an Adult-Child Interaction (ACI), opposed to an Adult-Adult Interaction (AAI) and this decrease is even higher in the Adult-Robot Interaction (ARI). We also found important differences between ACI and ARI in how the behavior is modified over time as the interaction unfolds. These findings indicate the necessity of integrating top-down feedback structures into a bottom-up system for robots to be fully accepted as interaction partners.
AU - Vollmer, Anna-Lisa
AU - Lohan, Katrin Solveig
AU - Fischer, Kerstin
AU - Nagai, Yukie
AU - Pitsch, Karola
AU - Fritsch, Jannik
AU - Rohlfing, Katharina
AU - Wrede, Britta
ID - 17272
KW - robot simulation
KW - hand movement velocity
KW - robotic interaction partner
KW - robotic agent
KW - robot-directed interaction
KW - multimodal analysis
KW - Motionese
KW - Motherese
KW - intelligent tutoring systems
KW - immature cognitive capability
KW - human computer interaction
KW - eye gaze
KW - child-directed speech
KW - child-directed motion
KW - bottom-up system
KW - bottom-up saliency-based attention model
KW - adult-robot interaction
KW - adult-child interaction
KW - adult-adult interaction
KW - human-robot interaction
KW - action learning
KW - social learning scenario
KW - social robotics
KW - software agents
KW - top-down feedback structures
KW - tutoring behavior
T2 - Development and Learning, 2009. ICDL 2009. IEEE 8th International Conference on Development and Learning
TI - People modify their tutoring behavior in robot-directed interaction for action learning
ER -
TY - CONF
AU - El-Darawy, Mohamed
AU - Pfau, Timo
AU - Hoffmann, Sebastian
AU - Noé, Reinhold
ID - 38242
T2 - 2009 IEEE/LEOS Summer Topical Meeting
TI - Differential phase compensated constant modulus algorithm for phase noise tolerant coherent optical transmission
ER -
TY - JOUR
AU - Wagenknecht, Inga
AU - Meier-Gräwe, Uta
AU - Fegert, Jörg M.
ID - 40220
JF - Frühförderung interdisziplinär
SN - 0721-9121
TI - Frühe Hilfen rechnen sich
VL - 28
ER -
TY - JOUR
AU - Wallmeier, Nadine
AU - Menke, Kirsten
ID - 40348
IS - 2
JF - Korrespondenzblatt des Vereins für niederdeutsche Sprachforschung
TI - Tagungsbericht: 122. Jahresversammlung des Vereins für niederdeutsche Sprachforschung in Ratzeburg.
VL - 116
ER -
TY - CHAP
AU - Grotjahn, Rebecca
ED - Grotjahn, Rebecca
ID - 40417
SN - 978-3-86906-026-2
T2 - Deutsche Frauen, deutscher Sang – Musik in der deutschen Kulturnation
TI - Deutsche Frauen, deutscher Sang – Nation, Gender und die idea of serious music
VL - 1
ER -
TY - CHAP
AU - Grotjahn, Rebecca
ED - Grotjahn, Rebecca
ID - 40416
SN - 978-3-86906-026-2
T2 - Deutsche Frauen, deutscher Sang – Musik in der deutschen Kulturnation
TI - Einleitung
VL - 1
ER -
TY - BOOK
ED - Grotjahn, Rebecca
ID - 37888
SN - 978-3-86906-026-2
TI - Deutsche Frauen, deutscher Sang – Musik in der deutschen Kulturnation
VL - 1
ER -
TY - BOOK
AB - Die Orientierung am Sozialraum - an den lokalen sozialen Räumen von AkteurInnen - hat in der Sozialen Arbeit eine lange Tradition und erfährt zunehmende, auch öffentliche Aufmerksamkeit. An den Beispielen der Settlementarbeit, der Gemeinwesenarbeit und der sozialraumorientierten Sozialen Arbeit werden in diesem Band zentrale historische Entwicklungen der Communityorientierung in der Sozialen Arbeit rekonstruiert. Die zugrunde liegende Programmatik wird anschließend mit empirischen Daten konfrontiert und systematisch in aktuelle gesellschaftliche Zusammenhänge
AU - Landhäußer, Sandra
ID - 36298
KW - Community Gemeinwesenarbeit Settlementarbeit Soziale Arbeit Soziales Kapital
TI - Communityorientierung in der Sozialen Arbeit: Die Aktivierung von sozialem Kapital
ER -
TY - JOUR
AU - Andersen, U.L.
AU - Leuchs, G.
AU - Silberhorn, Christine
ID - 40201
IS - 3
JF - Laser & Photonics Reviews
KW - Condensed Matter Physics
KW - Atomic and Molecular Physics
KW - and Optics
KW - Electronic
KW - Optical and Magnetic Materials
SN - 1863-8880
TI - Continuous-variable quantum information processing
VL - 4
ER -