175 research outputs found

    Attachment and emotion regulation strategies in juveniles with and without emotional and behavioral disorders

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    Bindung bildet eine wichtige Grundlage für die Entwicklung sozio-emotionaler Kompetenzen, darunter die adäquate Regulation negativer Emotionen. Maladaptive im Kontrast zu adaptiven Strategien der Emotionsregulation finden sich häufiger bei klinischen Stichproben. In der vorliegenden Studie wurde der Zusammenhang von Bindungssicherheit in der Repräsentation bezüglich der Mutter und den Peers und Emotionsregulationsstrategien bei Jugendlichen (Alter 12-15) mit und ohne emotionale Störungen und Verhaltensauffälligkeiten untersucht. Je sicherer unauffällige Jugendliche ihre Bindung zu Mutter und Peers einschätzten, desto mehr adaptive Strategien der Emotionsregulation und Suche nach sozialer Unterstützung setzten sie ein. Je unsicherer ihre Bindungsrepräsentationen waren, desto mehr nutzten sie maladaptive Strategien und Emotionskontrolle. In der auffälligen Gruppe dagegen war nur Entfremdung in der Bindung zu Mutter und Peers (unsichere Bindungsrepräsentation) mit maladaptiven Emotionsregulationsstrategien assoziiert. Diese Befunde untermauern die Wichtigkeit der Qualität von Bindung als Grundlage adäquater Emotionsregulation bei Jugendlichen mit und ohne emotionale Störungen und Verhaltensauffälligkeiten. (DIPF/Orig.)Attachment is the basis for the development of socio-emotional competence, including the adequate regulation of negative emotions. The use of maladaptive strategies in contrast to adaptive strategies of emotion regulation is more frequent in clinical samples. In this study the association of the quality of attachment and emotion regulation strategies was investigated in juveniles (age 12-15) with and without emotional and behavioural disorders. Results show that the more secure the representation of the attachment to the mother and to peers of individuals in the non-clinical group were the more adaptive strategies of emotion regulation and the use of social support they reported. More insecure relationships were related to more maladaptive strategies and emotion control. In the clinical group, only alienation as indicator of an insecure attachment to the mother and to peers was related to maladaptive strategies, emotion control and seeking social support less frequently. The results underline the importance of the quality of attachment for adequate emotion regulation. (DIPF/Orig.

    Chapitre 7 - Le rôle des interactions entre humains et animaux dans l’éducation

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    Introduction Au cours de la dernière décennie, la recherche a prouvé l’existence d’une multitude d’effets positifs des interactions entre les êtres humains et les animaux sur la santé et le bien-être chez l’homme. Elle a mis en avant les mécanismes sous-jacents qui expliquent pourquoi l’utilisation des animaux peut parfois être plus efficace que les seules interventions humaines. Ces effets constituent un aspect important de One..

    Enhanced spontaneous emission from quantum dots in short photonic crystal waveguides

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    We report a study of the quantum dot emission in short photonic crystal waveguides. We observe that the quantum dot photoluminescence intensity and decay rate are strongly enhanced when the emission energy is in resonance with Fabry-Perot cavity modes in the slow-light regime of the dispersion curve. The experimental results are in agreement with previous theoretical predictions and further supported by three-dimensional finite element simulation. Our results show that the combination of slow group velocity and Fabry-Perot cavity resonance provides an avenue to efficiently channel photons from quantum dots into waveguides for integrated quantum photonic applications.Comment: 12 pages, 4 figure

    Waveguide single-photon detectors for integrated quantum photonic circuits

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    The generation, manipulation and detection of quantum bits (qubits) encoded on single photons is at the heart of quantum communication and optical quantum information processing. The combination of single-photon sources, passive optical circuits and single-photon detectors enables quantum repeaters and qubit amplifiers, and also forms the basis of all-optical quantum gates and of linear-optics quantum computing. However, the monolithic integration of sources, waveguides and detectors on the same chip, as needed for scaling to meaningful number of qubits, is very challenging, and previous work on quantum photonic circuits has used external sources and detectors. Here we propose an approach to a fully-integrated quantum photonic circuit on a semiconductor chip, and demonstrate a key component of such circuit, a waveguide single-photon detector. Our detectors, based on superconducting nanowires on GaAs ridge waveguides, provide high efficiency (20%) at telecom wavelengths, high timing accuracy (60 ps), response time in the ns range, and are fully compatible with the integration of single-photon sources, passive networks and modulators.Comment: 11 pages, 4 figure

    Widely tunable, efficient on-chip single photon sources at telecommunication wavelengths

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    We demonstrate tunable on-chip single photon sources using the Stark tuning of single quantum dot (QD) excitonic transitions in short photonic crystal waveguides (PhC WGs). The emission of single QDs can be tuned in real-time by 9 nm with an applied bias voltage less than 2V. Due to a reshaped density of optical modes in the PhC WG, a large coupling efficiency \beta>65% to the waveguide mode is maintained across a wavelength range of 5 nm. When the QD is resonant with the Fabry-Perot mode of the PhC WG, a strong enhancement of spontaneous emission is observed leading to a maximum coupling efficiency \beta=88%. These results represent an important step towards the scalable integration of single photon sources in quantum photonic integrated circuits.Comment: 15 pages, 5 figue

    Performance of the CMS Cathode Strip Chambers with Cosmic Rays

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    The Cathode Strip Chambers (CSCs) constitute the primary muon tracking device in the CMS endcaps. Their performance has been evaluated using data taken during a cosmic ray run in fall 2008. Measured noise levels are low, with the number of noisy channels well below 1%. Coordinate resolution was measured for all types of chambers, and fall in the range 47 microns to 243 microns. The efficiencies for local charged track triggers, for hit and for segments reconstruction were measured, and are above 99%. The timing resolution per layer is approximately 5 ns

    Performance and Operation of the CMS Electromagnetic Calorimeter

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    The operation and general performance of the CMS electromagnetic calorimeter using cosmic-ray muons are described. These muons were recorded after the closure of the CMS detector in late 2008. The calorimeter is made of lead tungstate crystals and the overall status of the 75848 channels corresponding to the barrel and endcap detectors is reported. The stability of crucial operational parameters, such as high voltage, temperature and electronic noise, is summarised and the performance of the light monitoring system is presented

    The Liver Tumor Segmentation Benchmark (LiTS)

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    In this work, we report the set-up and results of the Liver Tumor Segmentation Benchmark (LITS) organized in conjunction with the IEEE International Symposium on Biomedical Imaging (ISBI) 2016 and International Conference On Medical Image Computing Computer Assisted Intervention (MICCAI) 2017. Twenty four valid state-of-the-art liver and liver tumor segmentation algorithms were applied to a set of 131 computed tomography (CT) volumes with different types of tumor contrast levels (hyper-/hypo-intense), abnormalities in tissues (metastasectomie) size and varying amount of lesions. The submitted algorithms have been tested on 70 undisclosed volumes. The dataset is created in collaboration with seven hospitals and research institutions and manually reviewed by independent three radiologists. We found that not a single algorithm performed best for liver and tumors. The best liver segmentation algorithm achieved a Dice score of 0.96(MICCAI) whereas for tumor segmentation the best algorithm evaluated at 0.67(ISBI) and 0.70(MICCAI). The LITS image data and manual annotations continue to be publicly available through an online evaluation system as an ongoing benchmarking resource.Comment: conferenc

    Calibration of the CMS Drift Tube Chambers and Measurement of the Drift Velocity with Cosmic Rays

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    CMS physics technical design report : Addendum on high density QCD with heavy ions

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