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Institut
- Informatik und Kommunikation (118) (entfernen)
Die Sportpresse hat gegenüber anderen Medien einen fundamentalen Aktualitätsnachteil und muss verstärkt als Komplementärmedium agieren, um für ansprechende Inhalte zu sorgen. Fraglich ist neben dem Inhalt jedoch ebenso die Art der Berichterstattung, auf sprachlich-stilistischer und formal-gestalterischer Ebene. Untersucht wird die Berichterstattung (N = 455) der Süddeutschen Zeitung über die Fußball-Europameisterschaften 2000, 2008 und 2016 hinsichtlich eines möglichen Boulevardisierungstrends. Zur Ermittlung eines möglichen Trends wurde ein Boulevardisierungsindex entwickelt. Dem Index kann ein leichter Boulevardisierungstrend für den 16-jährigen Zeitraum entnommen werden. Dabei ist die Berichterstattung besonders zwischen den Jahren 2000 und 2008 boulevardesker geworden. Die Befunde zeigen zudem, dass insgesamt vermehrt auf Boulevardvariablen (z. B. Emotionalisierung) gesetzt wurde, die vor dem Hintergrund journalistischer Qualität als weniger kritisch anzusehen sind.
Background: Emotions play a central role in mental disorder and especially in depression. They are sensed in the body, and it has recently been shown in healthy participants that these sensations can be differentiated between emotions. The aim of the current study was to assess bodily sensations for basic emotions induced by emotion eliciting pictures in depression.
Methods: 30 healthy controls (HC), 30 individuals suffering from Major depressive disorder (MDD) without medication use (MDDnm) and 30 individuals with MDD with medication use (MDDm) were shown emotional and neutral pictures and were asked to paint areas in an empty body silhouette where they felt an increase or decrease in activation. Body sensation maps were then calculated and statistical pattern recognition applied.
Results Results indicated statistically separable activation patterns for all three groups. MDDnm showed less overall activation than HCs, especially in sadness and fear, while MDDm showed stronger deactivation for all emotions than the other two groups.
Conclusions: We could show that emotion experience was associated with bodily sensations that are weaker in depression than in healthy controls and that antidepressant medication was correlated with an increased feeling of bodily deactivation.
Results give insights into the relevance for clinicians to acknowledge bodily sensations in the treatment of depression.
Bachelor/Master-Studiengänge
(1999)
Selbstständig und selbstbestimmt essen und trinken zu können gehört zu den Grundbedürfnissen des Menschen und wird den Aktivitäten des täglichen Lebens (ATLs) zugeordnet. Körperliche Beeinträchtigungen, die mit Funktionsverlusten in Armen, Händen und ggf. der Beweglichkeit des Oberkörpers einhergehen, schränken die selbstständige Nahrungszufuhr erheblich ein. Die Betroffenen sind darauf angewiesen, dass ihnen Getränke und Mahlzeiten zubereitet, bereitgestellt und angereicht werden. Zu dieser Personengruppe gehören Menschen mit querschnittbedingter Tetraplegie, Multiple Sklerose, Muskeldystrophie und Erkrankungen mit ähnlichen Auswirkungen. Derzeit gibt es verschiedene assistive Technologien, die das selbstständige Essen und Trinken wieder ermöglichen sollen.Wie aber muss ein Interaktionsdesign für einen Roboterarm gestaltet sein, damit er von den Betroffenen zur Nahrungsaufnahme genutzt werden kann? Welche Anforderungen gibt es und welche Aspekte sind in Bezug auf die Akzeptanz eines Roboterarms zu berücksichtigen?
Robot arms are one of many assistive technologies used by people with motor impairments. Assistive robot arms can allow people to perform activities of daily living (ADL) involving grasping and manipulating objects in their environment without the assistance of caregivers. Suitable input devices (e.g., joysticks) mostly have two Degrees of Freedom (DoF), while most assistive robot arms have six or more. This results in time-consuming and cognitively demanding mode switches to change the mapping of DoFs to control the robot. One option to decrease the difficulty of controlling a high-DoF assistive robot arm using a low-DoF input device is to assign different combinations of movement-DoFs to the device’s input DoFs depending on the current situation (adaptive control). To explore this method of control, we designed two adaptive control methods for a realistic virtual 3D environment. We evaluated our methods against a commonly used non-adaptive control method that requires the user to switch controls manually. This was conducted in a simulated remote study that used Virtual Reality and involved 39 non-disabled participants. Our results show that the number of mode switches necessary to complete a simple pick-and-place task decreases significantl when using an adaptive control type. In contrast, the task completion time and workload stay the same. A thematic analysis of qualitative feedback of our participants suggests that a longer period of training could further improve the performance of adaptive control methods.
A Robust Interface for Head Motion based Control of a Robot Arm using MARG and Visual Sensors
(2018)
Head-controlled human machine interfaces have gained popularity over the past years, especially in the restoration of the autonomy of severely disabled people, like tetraplegics. These interfaces need to be reliable and robust regarding the environmental conditions to guarantee safety of the user and enable a direct interaction between a human and a machine. This paper presents a hybrid MARG and visual sensor system for head orientation estimation which is in this case used to teleoperate a robotic arm. The system contains a Magnetic Angular Rate Gravity (MARG)-sensor and a Tobii eye tracker 4C. A MARG sensor consists of tri-axis accelerometer, gyroscope as well as a magnetometer which enable a complete measurement of orientation relative to the direction of gravity and magnetic field of the earth. The tri-axis magnetometer is sensitive to external magnetic fields which result in incorrect orientation estimation from the sensor fusion process. In this work the Tobii eye tracker 4C is used to increase head orientation estimation because it also features head tracking even though it is commonly used for eye tracking. This type of visual sensor does not suffer magnetic drift. However, it computes orientation data only, if a user is detectable. Within this work a state machine is presented which enables data fusion of the MARG and visual sensor to improve orientation estimation. The fusion of the orientation data of MARG and visual sensors enables a robust interface, which is immune against external magnetic fields. Therefore, it increases the safety of the human machine interaction.
Global registration of heterogeneous ground and aerial mapping data is a challenging task. This is especially difficult in disaster response scenarios when we have no prior information on the environment and cannot assume the regular order of man-made environments or meaningful semantic cues. In this work we extensively evaluate different approaches to globally register UGV generated 3D point-cloud data from LiDAR sensors with UAV generated point-cloud maps from vision sensors. The approaches are realizations of different selections for: a) local features: key-points or segments; b) descriptors: FPFH, SHOT, or ESF; and c) transformation estimations: RANSAC or FGR. Additionally, we compare the results against standard approaches like applying ICP after a good prior transformation has been given. The evaluation criteria include the distance which a UGV needs to travel to successfully localize, the registration error, and the computational cost. In this context, we report our findings on effectively performing the task on two new Search and Rescue datasets. Our results have the potential to help the community take informed decisions when registering point-cloud maps from ground robots to those from aerial robots.
This video shows a model computed from 320 images taken at the Tjex 2015 of the trade project (www.tradr-project.eu). The images were acquired with a falcan 8 drone (AscTec) and reconstruct the structure with VisualSfm software. The flight was in 150 m. The Tower is about 95 meter high.
This paper presents a novel approach to build consistent 3D maps for multi robot cooperation in USAR environments. The sensor streams from unmanned aerial vehicles (UAVs) and ground robots (UGV) are fused in one consistent map. The UAV camera data are used to generate 3D point clouds that are fused with the 3D point clouds generated by a rolling 2D laser scanner at the UGV. The registration method is based on the matching of corresponding planar segments that are extracted from the point clouds. Based on the registration, an approach for a globally optimized localization is presented. Apart from the structural information of the point clouds, it is important to mention that no further information is required for the localization. Two examples show the performance of the overall registration.
360° UAV Flight in a collapse test setup at the German Resuce Robotik Center