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See detailZur Variabilität adaptiver Kompetenzen von Erwachsenen mit geistiger Behinderung
Orthmann Bless, Dagmar; Zurbriggen, Carmen UL

in Vierteljahresschrift für Heilpädagogik und ihre Nachbarsgebiete (2017), 86(1), 4155

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See detailAccessible length scale of the in-plane structure in polarized neutron off-specular and grazing-incidence small-angle scattering measurements
Maruyama, R.; Bigault, T.; Wildes, A. R. et al

in Journal of Physics Conference Series (2017), 862

Polarized neutron off-specular and grazing-incidence small-angle scattering measurements are useful methods to investigate the in-plane structure and its correlation of layered systems. Although these ... [more ▼]

Polarized neutron off-specular and grazing-incidence small-angle scattering measurements are useful methods to investigate the in-plane structure and its correlation of layered systems. Although these measurements give information on complementary and overlapping length scale, the different characteristics between them need to be taken into account when performed. In this study, the difference in the accessible length scale of the in-plane structure, which is one of the most important characteristics, was discussed using an Fe/Si multilayer together with simulations based on the distorted wave Born approximation. [less ▲]

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See detailSpin-wave dynamics in the helimagnet FeGe studied by small-angle neutron scattering
Siegfried, S.-A.; Sukhanov, A. S.; Altynbaev, E. V. et al

in PHYSICAL REVIEW B (2017), 95(13), 134415

We have studied the spin-wave stiffness of the Dzyaloshinskii-Moriya helimagnet FeGe in a temperature range from 225 K up to TC ≈ 278.7 K by small-angle neutron scattering. The method we have used is ... [more ▼]

We have studied the spin-wave stiffness of the Dzyaloshinskii-Moriya helimagnet FeGe in a temperature range from 225 K up to TC ≈ 278.7 K by small-angle neutron scattering. The method we have used is based on [Grigoriev et al., Phys. Rev. B 92, 220415(R) (2015)] and was extended here for the application in polycrystalline samples. We confirm the validity of the anisotropic spin-wave dispersion for FeGe caused by the Dzyaloshinskii-Moriya interaction. We have shown that the spin-wave stiffness A for the FeGe helimagnet decreases with a temperature as A(T ) = 194[1 − 0.7(T/TC)4.2] meV °A2. The finite value of the spin-wave stiffness A = 58 meV °A2 at TC classifies the order-disorder phase transition in FeGe as being the first-order one. [less ▲]

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See detailThe role of parents in children’s emotional ability.
Pinto Costa, Andreia UL; Steffgen, Georges UL; Vögele, Claus UL

Scientific Conference (2017)

Understanding the processes that lead to different emotional responses in children is important for prevention and intervention programs aimed at improving developmental outcomes. Among the many factors ... [more ▼]

Understanding the processes that lead to different emotional responses in children is important for prevention and intervention programs aimed at improving developmental outcomes. Among the many factors that can influence children’s emotional reactivity and emotion regulation, parents and the way they interact with their children can impact children’s emotional responses. Even though the influence of parents in children’s emotional responses has been extensively studied during infancy and toddlerhood, the way parents interact with their preschool and school-aged children during upsetting moments has received little attention. The present study aimed at examining the effects of parental presence and parental interaction during a frustration-eliciting situation on preschoolers’ and school-aged children’s emotional reactivity and emotion regulation. More specifically, it aimed at examining whether parents’ presence during a frustration-eliciting situation (attractive toy removal) influences children’s emotional reactivity and emotion regulation. Moreover, whether children whose parents interact with them differ in emotional reactivity and emotion regulation from those whose parents do not interact with them. A convenience sample of 66 children (19 girls) together with one of their parents participated in the study. Children were aged between 3 and 13 years (Mage=8.65; SDage=2.32) and parents were aged between 26 to 53 years (Mage=40.38; SDage=5.22). For 41 children, parents were present during the frustration-eliciting situation. For the remaining 25 children, parents were absent. Children and parents who were present were videotaped during the situation. Parents’ interaction with their children, children’s emotional reactivity, and children’s emotion regulation during the situation were coded by 2 independent observers. Ethical approval as well as parents’ and children’s informed consent was obtained before conducting the study. It was found that children whose parents were present, compared to children whose parents were absent, expressed more positive emotions [t(63)=3.19, p<.01, r=.37] and less neutral emotions [t(64)=2.92, p<.01, r=.34], but did not differ in the amount of negative emotions [t(64)=0.28, p=.78, r=.03], or in the use of adaptive emotion regulation strategies [t(64)=0.99, p=.33, r=.12]. Regarding parents’ interaction, it was found that children of parents who interacted with them, compared to children of parents who did not interact with them, expressed less neutral emotions [t(39)=2.80, p<.01, r=.41], expressed more positive [t(39)=2.01, p=.05, r=.31] and more negative emotions [t(33)=2.30, p<.05, r=.37], and used more emotion regulation strategies [t(39)=2.55, p<.05, r=.38]. These results show that parents’ presence can have an influence in preschoolers’ and school-aged children’s positive reactivity but not in children’s negative reactivity or in the use of adaptive emotion regulation strategies. Furthermore, when present, parents’ interaction with their children is related to children’s lower neutrality, and to higher positive and negative reactivity. It is also related to children’s use of more adaptive emotion regulation strategies. These results suggest that, either because parents interact more with reactive children, or because children are more expressive with interactive parents, parents’ interaction is related to children’s reactivity and better regulation. Including parents in interventions and providing parents with training on emotional support for their children may be beneficial for improving developmental outcomes in children with emotional difficulties. [less ▲]

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See detailCombining machine learning and genetic algorithms to solve the independent tasks scheduling problem
Dorronsoro, Bernabé; Pinel, Frédéric UL

in 2017 3rd IEEE International Conference on Cybernetics (CYBCONF) (2017)

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See detailAiming at a Moving Target: Theoretical and Methodological Considerations in the Study of Intraindividual Goal Conflict between Personal Goals
Gorges, Julia; Grund, Axel UL

in FRONTIERS IN PSYCHOLOGY (2017), 8

Multiple-goal pursuit and conflict between personal life-defining goals can be considered part of everyday business in most individuals' lives. Given the potentially detrimental effects of goal conflict ... [more ▼]

Multiple-goal pursuit and conflict between personal life-defining goals can be considered part of everyday business in most individuals' lives. Given the potentially detrimental effects of goal conflict-for example, impaired well-being or poor performance-the literature on goal conflict is surprisingly scattered due to heterogeneous methodological approaches and technical terms. Little empirical research has addressed the conceptualization of goal conflict against the background of differing understandings from a structure-like and a process-like perspective. In the present article, we outline theoretical foundations of goal conflict from two perspectives: a structure-and a process-like perspective. Based on a comparative analysis and integration of these two perspectives, we systematically review empirical studies on goal conflict over 30 years of research. In doing so, we identify and discuss important conceptual dimensions of goal conflict, namely, goal conflict as a cognitive construct and an experiential instance, a focus on goal interrelations or on specific goal properties, and resource vs. inherent conflict, and the potential of these distinctions to further research on goal conflict. Finally, we present major challenges and pose questions that need to be addressed by future research. [less ▲]

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See detailMultiple Goals and Motivation at School: The Theory of Motivational Action Conflicts
Hofer, Manfred; Fries, Stefan; Grund, Axel UL

in ZEITSCHRIFT FUR PADAGOGISCHE PSYCHOLOGIE (2017), 31(1), 69-85

This article presents the research program "Theory of Motivational Action Conflicts", which addresses situations in which persons aim at achieving more than one important goal. The theory was studied with ... [more ▼]

This article presents the research program "Theory of Motivational Action Conflicts", which addresses situations in which persons aim at achieving more than one important goal. The theory was studied with students striving simultaneously to reach academic and nonacademic goals. When students experience goal conflicts, incentives attached to options not chosen may interfere with the execution of the chosen action. Cross-sectional, longitudinal, experience-sampling, and experimental studies show that, depending on its strength, motivational interference can impair the achievements as well as the well-being of students. The article provides hints on how students can minimize goal conflicts in order to experience a better balance across developmental contexts. [less ▲]

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See detailApplication of SWATH Proteomics to Mouse Biology.
Wu, Yibo; Williams, Evan UL; Aebersold, Ruedi

in Current protocols in mouse biology (2017), 7(2), 130-143

The quantitative measurement of the proteome has been shown to yield new insights into physiology and cell biology that cannot be determined from the genome and transcriptome because the quantitative ... [more ▼]

The quantitative measurement of the proteome has been shown to yield new insights into physiology and cell biology that cannot be determined from the genome and transcriptome because the quantitative relationship between transcriptome and proteome is complex. MS-based proteomics techniques, such as SWATH-MS, have recently advanced to the point at which they may be reliably applied by biologists who are not specialists in mass spectrometry. Here we provide standard protocols for preparation of tissue samples for input into the SWATH-MS analytical pipeline. These protocols are designed for high-throughput processing of tissues with >/=5 mg of sample available for analysis. Studies with extremely limited amounts of tissue should consider PCT-SWATH. An experienced single user should be able to process 48 samples per day for injection into the mass spectrometer, or up to 144 samples a week. The machine time necessary for running these samples with SWATH is approximately 1.5 hr per sample. Data acquisition protocols are also provided. (c) 2017 by John Wiley & Sons, Inc. [less ▲]

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See detailResources for Systems Genetics.
Williams, Robert W.; Williams, Evan UL

in Methods in molecular biology (Clifton, N.J.) (2017), 1488

A key characteristic of systems genetics is its reliance on populations that vary to a greater or lesser degree in genetic complexity-from highly admixed populations such as the Collaborative Cross and ... [more ▼]

A key characteristic of systems genetics is its reliance on populations that vary to a greater or lesser degree in genetic complexity-from highly admixed populations such as the Collaborative Cross and Diversity Outcross to relatively simple crosses such as sets of consomic strains and reduced complexity crosses. This protocol is intended to help investigators make more informed decisions about choices of resources given different types of questions. We consider factors such as costs, availability, and ease of breeding for common scenarios. In general, we recommend using complementary resources and minimizing depth of resampling of any given genome or strain. [less ▲]

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See detailSystematic proteome and proteostasis profiling in human Trisomy 21 fibroblast cells.
Liu, Yansheng; Borel, Christelle; Li, Li et al

in Nature communications (2017), 8(1), 1212

Down syndrome (DS) is mostly caused by a trisomy of the entire Chromosome 21 (Trisomy 21, T21). Here, we use SWATH mass spectrometry to quantify protein abundance and protein turnover in fibroblasts from ... [more ▼]

Down syndrome (DS) is mostly caused by a trisomy of the entire Chromosome 21 (Trisomy 21, T21). Here, we use SWATH mass spectrometry to quantify protein abundance and protein turnover in fibroblasts from a monozygotic twin pair discordant for T21, and to profile protein expression in 11 unrelated DS individuals and matched controls. The integration of the steady-state and turnover proteomic data indicates that protein-specific degradation of members of stoichiometric complexes is a major determinant of T21 gene dosage outcome, both within and between individuals. This effect is not apparent from genomic and transcriptomic data. The data also reveal that T21 results in extensive proteome remodeling, affecting proteins encoded by all chromosomes. Finally, we find broad, organelle-specific post-transcriptional effects such as significant downregulation of the mitochondrial proteome contributing to T21 hallmarks. Overall, we provide a valuable proteomic resource to understand the origin of DS phenotypic manifestations. [less ▲]

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See detailReal-World Impact of Information Systems : The Effect of Seemingly Small Design Choices
Ableitner, Liliane; Fridgen, Gilbert UL; Hosseini, Sabiölla et al

in Workshop on Information Technologies and Systems (WITS) (2017)

Information system (IS) have not only become indispensable in professional contexts, but can also serve as a platform for data-based interventions targeting issues for humanity. Providing individuals with ... [more ▼]

Information system (IS) have not only become indispensable in professional contexts, but can also serve as a platform for data-based interventions targeting issues for humanity. Providing individuals with concrete feedback on their current behavior has been shown to foster sustainable behavior. So far, research on the real-world impact and nderlying mechanisms of such IS-enabled interventions is scarce. In a randomized controlled field experiment with 1,423 participants, we systematically test the effect of different intervention strategies regarding their impact on energy consumption and user experience. We find a onservation effect of over 18% for the best treatment. In particular, the results suggest that small, seemingly harmless variations of IS design choices regarding numerical, normative, or emotional feedback can considerably affect behavioral outcomes (energy use). Potential explanations of observed behavior are given based on theories from psychology. The study delivers design implications for innovative IS artifacts that highlight the importance and necessity of taking cognitive processes into account. [less ▲]

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See detailForging a Double-Edged Sword : Resource Synergies and Dependencies in Complex IT Project Portfolios
Radszuwill, Sven; Fridgen, Gilbert UL

in 38th International Conference on Information Systems (ICIS) (2017)

These days, due to the high level of interactions between individual projects, IT project portfolios are best described as IT project networks. While varied and frequent interactions between single IT ... [more ▼]

These days, due to the high level of interactions between individual projects, IT project portfolios are best described as IT project networks. While varied and frequent interactions between single IT projects create additional risks, they also generate the possibility of additional synergistic effects. This, however, is not reflected in current methods for IT project portfolio evaluation and project portfolio selection, which neither account for specific network characteristics nor do they clearly distinguish between the types of interaction and their effects. In this paper, we model resource synergies and dependencies within IT project networks by means of weighted, undirected and directed graphs and describe how alpha centrality allows for an assessment of both. We further illustrate the importance of accounting for network characteristics and the equal importance of distinguishing between resource synergies and resource dependencies. Our model can therefore be applied to gain practical insights on IT project portfolios [less ▲]

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See detailBlockchain Lab : Design, Implementation and Evaluation of Innovative Business and Process Models
Fridgen, Gilbert UL; Prinz, Wolfgang; Rose, Thomas et al

in ERCIM News (2017), (110), 36--37

Blockchain is considered to be enabling technology that is going beyond the Bitcoin crypto currency. It replaces centralized transaction management by the distribution of transactions across a network of ... [more ▼]

Blockchain is considered to be enabling technology that is going beyond the Bitcoin crypto currency. It replaces centralized transaction management by the distribution of transactions across a network of nodes with different methods for consensus finding. This major change of governance may change sectors of our societies far beyond digital currencies. Fraunhofer FIT established a Blockchain Lab in 2016 in order to explore its impact. It will serve as an experience lab for technical components, implementation platforms, application prototypes and blueprints for novel governance, process, and business models. [less ▲]

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See detailInitial conditions for the marketing of flexibility in demand: status quo analysis and meta-study
Bertsch, Joachim; Fridgen, Gilbert UL; Sachs, Thomas et al

Report (2017)

Die vorliegende Arbeit ist Teil des durch das Bundesministerium für Bildung und Forschung geförderten Forschungsprojektes Synchronisierte und energieadaptive Produktionstechnik zur flexiblen Ausrichtung ... [more ▼]

Die vorliegende Arbeit ist Teil des durch das Bundesministerium für Bildung und Forschung geförderten Forschungsprojektes Synchronisierte und energieadaptive Produktionstechnik zur flexiblen Ausrichtung von Industrieprozessen auf eine fluktuierende Energieversorgung (SynErgie). Ziel des Forschungsprojektes ist die Befähigung der energieintensiven Industrien in Deutschland, die Stromnachfrage dem zunehmend fluktuierenden Stromangebot anzupassen. In der Vergangenheit waren Stromsysteme in der Regel dahingehend ausgelegt, dass die Erzeugungsseite des Marktes an das zeitliche Verhalten des Verbrauchs angepasst war. Durch den verstärkten Ausbau volatiler erneuerbarer Energien unterliegt die Stromerzeugung jedoch unkontrollierbaren, wetterabhängigen Schwankungen, weshalb eine Flexibilisierung des Gesamtsystems zunehmend an Bedeutung gewinnt. Die in SynErgie betrachteten Industrieprozesse stellen dabei eine Teilmenge potenzieller Flexibilisierungsoptionen dar und können zur Lastanpassung an schwankende Erzeugung sowie zur Bereitstellung von Systemdienstleistungen und Entlastung der Netze beitragen. In einem liberalisierten, wettbewerblichen Strommarkt sind im Hinblick auf die Erschließung der Potenziale der Nachfrageflexibilität die marktlichen und regulatorischen Rahmenbedingungen von hoher Relevanz. Diese Studie beschreibt daher zunächst die Grundlagen des Strommarktdesigns und des konstituierenden gesetzlichen Rahmens. Dabei wird stets der Bezug zur Anwendung auf Industrieprozesse genommen und potenzielle Hemmnisse der Partizipation flexibler Nachfrageprozesse aufgearbeitet. Die Analyse bildet den Ausgangspunkt für die folgenden Arbeitspakete im Cluster IV und dient der clusterübergreifenden Information über den Status Quo der Marktstrukturen und regulatorischen Rahmenbedingungen. Neben der systematischen Aufarbeitung des marktlichen Rahmens werden die wissenschaftliche Literatur sowie bereits publizierte Studien zum Thema Nachfrageflexibilität (Demand Side Management und Demand Response) in einer Metastudie analysiert und zusammengefasst. [less ▲]

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See detailCentralized Rainfall Estimation using Carrier-to-Noise of Satellite Communication Links
Gharanjik, Ahmad UL; Shankar, Bhavani UL; Zimmer, Frank et al

in IEEE Journal on Selected Areas In Communications (2017)

In this paper, we present a centralized method for real-time rainfall estimation using carrier-to-noise power ratio (C/N) measurements from broadband satellite communication networks. The C/N data of both ... [more ▼]

In this paper, we present a centralized method for real-time rainfall estimation using carrier-to-noise power ratio (C/N) measurements from broadband satellite communication networks. The C/N data of both forward link and return link are collected by the gateway station from the user terminals in the broadband satellite communication network and stored in a database. The C/N for such Ka-band scenarios is impaired mainly by the rainfall. Using signal processing and machine learning techniques, we develop an algorithm for real-time rainfall estimation. Extracting relevant features from C/N, we use artificial neural network in order to distinguish the rain events from dry events. We then determine the signal attenuation corresponding to the rain events and examine an empirical relationship between rainfall rate and signal attenuation. Experimental results are promising and prove the high potential of satellite communication links for real environment monitoring, particularly rainfall estimation. [less ▲]

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See detailLuxemburg – ein Halbzentrum? Deutsch an Gymnasien in Luxemburg
Wagner, Mélanie UL

in Zeitschrift für Deutsche Philologie (2017), 136(2017), 145-167

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See detailMagnetoplasmonic control of plasmonic vortices
Maccaferri, Nicolò UL; Gorodetski, Yuri; Toma, Andrea et al

in Applied Physics Letters (2017), 111(20), 201104

We theoretically investigate the generation of far-field propagating optical beams with a desired orbital angular momentum by using an archetypical magnetoplasmonic tip surrounded by a gold spiral slit ... [more ▼]

We theoretically investigate the generation of far-field propagating optical beams with a desired orbital angular momentum by using an archetypical magnetoplasmonic tip surrounded by a gold spiral slit. The use of a magnetic material can lead to important implications once magneto-optical activity is activated through the application of an external magnetic field. The physical model and the numerical study presented here introduce the concept of magnetically tunable plasmonic vortex lens, namely a magnetoplasmonic vortex lens, which ensures a tunable selectivity in the polarization state of the generated nanostructured beam. The presented system provides a promising platform for a localized excitation of plasmonic vortices followed by their beaming in the far-field with an active modulation of both light's transmission and helicity. Published by AIP Publishing. [less ▲]

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See detailScanning Probe Photonic Nanojet Lithography
Jacassi, Andrea; Tantussi, Francesco; Dipalo, Michele et al

in ACS Applied Materials and Interfaces (2017), 9(37), 32386-32393

The use of nano/microspheres or beads for optical nanolithography is a consolidated technique for achieving subwavelength structures using a cost-effective approach; this method exploits the capability of ... [more ▼]

The use of nano/microspheres or beads for optical nanolithography is a consolidated technique for achieving subwavelength structures using a cost-effective approach; this method exploits the capability of the beads to focus electromagnetic waves into subwavelength beams called photonic nanojets, which are used to expose the photoresist on which the beads are placed. However, this technique has only been used to produce regular patterns based on the spatial arrangement of the beads on the substrate, thus considerably limiting the pool of applications. Here, we present a novel microsphere-based optical lithography technique that offers high subwavelength resolution and the possibility of generating any arbitrary pattern. The presented method consists of a single microsphere embedded in an AFM cantilever, which can be controlled using the AFM motors to write arbitrary patterns with subwavelength resolution (down to 290 nm with a 405 nm laser). The performance of the proposed technique can compete with those of commercial high-resolution standard instruments, with the advantage of a one-order-of-magnitude reduction in costs. This approach paves the way for direct integration of cost-effective, high-resolution optical lithography capabilities into several existing AFM systems. [less ▲]

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