Serielle Malerei. Die Neuformierung der Produktions-, Rezeptions- und Distributionsbedingungen des Tafelbildes

Serien sind nicht etwa Ausdruck einer neuen Werkorientierung in der Malerei, bei der die Aufmerksamkeit vom einzelnen Bild auf einen größeren Zusammenhang gelenkt wird, sondern sind deutliche Hinweise auf eine prozess-, konzept- und handlungsorientierte Kunstpraxis, die jeden gültigen Werkbegriff hinter sich gelassen hat. Das Malen von Bildserien muss als strategisches Verhalten, als methodisches Vorgehen und als instrumentelle Praktik innerhalb des Systems Malerei verstanden werden, um in unterschiedlicher Weise und mit wechselnden Gewichtungen eine Neuformierung der Produktions-, Rezeptions- und Distributionsbedingungen der Tafelmalerei voranzutreiben. Serielle Gemäldepraktiken standen im 20. Jahrhundert in engem Zusammenhang mit der Entwicklung neuer Formen malerischer Visualität, etwa kubistischer und abstrakter Bildsprachen oder hybrider Bildformen; sie diente der selbstreferentiellen Erkenntnisgewinnung des Mediums Malerei, die man als grundlegenden Bestandteil einer allgemeinen Ontologie der Kunst betrachten kann. Genauso wurde mit seriell hergestellten Gemälden die Analyse und Kritik der massenmedialen Bildproduktion und der gesellschaftlichen Zeichenzirkulation betrieben, wurden alternative Lebensentwürfe und ökonomische Überlebensmodelle von Malern entwickelt. Diese Funktionalität serieller Malerei korreliert mit spezifischen Rollenkonzepten der einzelnen Künstler, etwa dem Forscher und Konstrukteur, dem in asketischer Weltabgewandtheit lebenden Außenseiter oder der menschlichen Malmaschine, dem geschäftstüchtigen Kulturunternehmer oder dem fliegenden Bilderhändler

Das obskure Medium. Phänomenologische Untersuchung zum Bildbegriff künstlerischer Druckgrafik

Die besonderen Bildqualitäten künstlerischer Druckgrafiken lassen sich nicht allein auf die jeweils verwendeten, heute zum Teil antiquiert wirkenden Druckverfahren reduzieren, vielmehr müssen aus einer übergeordneten Perspektive die allgemeinen produktionsästhetischen und ebenso die daraus resultierenden rezeptionsästhetischen Eigenschaften dieser Bilder untersucht werden. Die höchst eigenwillige Verbindung von maschineller und manueller Tätigkeit, die jene Einheit von Original und Reproduktion von Druckgrafiken hervorbringt, durchdringt und bestimmt mit der Wirkungsmacht einer inneren Gesetzmäßigkeit die produktionssoziologischen und verfahrenstechnischen, aber ebenso die präsentationsspezifischen und diskursiven Faktoren dieser Kunstgattung. Aus einem bildwissenschaftlichen Interesse wird gefragt, wie aus dem Dialog von Maschine und Hand die spezifische Bildästhetik von künstlerischer Druckgrafik entsteht

Sleep apnea-hypopnea quantification by cardiovascular data analysis

Sleep apnea is the most common sleep disturbance and it is an important risk factor for cardiovascular disorders. Its detection relies on a polysomnography, a combination of diverse exams. In order to detect changes due to sleep disturbances such as sleep apnea occurrences, without the need of combined recordings, we mainly analyze systolic blood pressure signals (maximal blood pressure value of each beat to beat interval). Nonstationarities in the data are uncovered by a segmentation procedure, which provides local quantities that are correlated to apnea-hypopnea events. Those quantities are the average length and average variance of stationary patches. By comparing them to an apnea score previously obtained by polysomnographic exams, we propose an apnea quantifier based on blood pressure signal. This furnishes an alternative procedure for the detection of apnea based on a single time series, with an accuracy of 82%

Annual shoot growth on apple trees with variable canopy leaf area and crop load in response to LiDAR scanned leaf area to fruit ratio

In tree fruit crops, the crop load is one factor that has an influence on the vegetative growth of the trees. However, since trees vary in leaf area and associated fruit bearing capacity, the number of fruit per tree alone is not sufficient to predict their vegetative growth. In the present study, it was investigated whether the leaf area to fruit ratio of trees variable in size and crop load, measured automatically with a LiDAR laser scanner, have an influence on growth properties of the annual shoots. Canopy leaf area, the number of fruit per tree and the leaf area to fruit ratio of apple trees from two commercial apple orchards of the cultivar 'Gala' grown on sandy soils were scanned with a LiDAR laser scanner over a two-year period (n=12 trees per orchard and year). Additionally, the amount of carbon partitioned to fruit and annual shoot growth was quantified for each tree in both years (n=36). No correlation between the number of fruit per tree and the canopy leaf area alone to the amount of carbon partitioned to annual shoot growth was found in both orchards. However, the carbon partitioned to fruit correlated to the leaf area to fruit ratio, while the amount of carbon partitioned to the annual shoot growth was only correlated to the leaf area to fruit ratio in the young orchard. The inter-tree variability in shoot properties has been described. Nevertheless, it was found that the leaf area to fruit ratio is a weak indicator for shoot properties in apple trees, especially in the mature orchards

Automatic analysis of systolic, diastolic and mean blood pressure of continuous measurement before, during and after sleep arousals in polysomnographic overnight recordings

Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG geförderten) Allianz- bzw. Nationallizenz frei zugänglich.This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.This paper deals with a detailed examination of sleep arousal events and the corresponding changes of systolic, diastolic and mean blood pressure. Arousals are short awakening events during sleep which do not become noticeable for the sleeping person. But the organism increases vital parameters, e.g. the blood pressure. The recreative sleep is disturbed, and the risk factor for cardiovascular diseases rises significantly. Impact on the continuous measured blood pressure for two arousal groups named spontaneous and non spontaneous arousals will be investigated. Polysomnographic recordings of patients suffering from sleep apnoea and a healthy control group will be examined. Using averaged blood pressure curves and a high time resolution, the courses are investigated in more detail than before. The results show an increasing slope a few seconds before and possible pressure minima a few seconds after the beginning of the arousal.EC/FP6/018474-2/EU/Dynamic analysis of physiological Networks/Daphne

A Performant Web-Based Visualization, Assessment, and Collaboration Tool for Multidimensional Biosignals

Biosignal-based research is often multidisciplinary and benefits greatly from multi-site collaboration. This requires appropriate tooling that supports collaboration, is easy to use, and is accessible. However, current software tools do not provide the necessary functionality, usability, and ubiquitous availability. The latter is particularly crucial in environments, such as hospitals, which often restrict users' permissions to install software. This paper introduces a new web-based application for interactive biosignal visualization and assessment. A focus has been placed on performance to allow for handling files of any size. The proposed solution can load local and remote files. It parses data locally on the client, and harmonizes channel labels. The data can then be scored, annotated, pseudonymized and uploaded to a clinical data management system for further analysis. The data and all actions can be interactively shared with a second party. This lowers the barrier to quickly visually examine data, collaborate and make informed decisions

Automatic validation and quality based readjustment of manually scored EEG arousal

Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG geförderten) Allianz- bzw. Nationallizenz frei zugänglich.This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.A knowledge of arousals during sleep is important to attain a deeper understanding regarding cardiovascular diseases. Manual scoring is time consuming and not always accurate. Automatic approaches are even worse inter alia due to inaccurate learning data. This paper presents an algorithm to improve the accuracy of manually scored data. Also a measure of quality is introduced to judge the automatically estimated results.EC/FP6/018474-2/EU/Dynamic analysis of physiological Networks/Daphne