Alexander Lang

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Information Extraction (IE)-the problem of extracting structured information from unstructured text - has become the key enabler for many enterprise applications such as semantic search, business analytics and regulatory compliance. While rule-based IE systems are widely used in practice due to their well-known "explainability," developing high-quality(More)
This paper describes the design and implementation of a new interface prototype for live music mixing. The ColorDex system employs a completely new operational metaphor which allows the mix DJ to prepare up to <i>six</i> tracks at once, and perform mixes between up to <i>three</i> of those at a time. The basic premises of the design are: 1) Build a(More)
The C-terminal domain (CTD) of mammalian RNA polymerase II consists of 52 repeats of the consensus hepta-peptide YSPTSPS, and links transcription to the processing of pre-mRNA. Although Pol II with a CTD shortened to five repeats (Pol II Delta5) is transcriptionally inactive on chromatin templates, it is not clear whether CTD is required for promoter(More)
Mammalian sirtuins are involved in the control of metabolism and life-span regulation. Here, we link the mitochondrial sirtuin SIRT4 with cellular senescence, skin aging, and mitochondrial dysfunction. SIRT4 expression significantly increased in human dermal fibroblasts undergoing replicative or stress-induced senescence triggered by UVB or(More)
BACKGROUND AND AIMS In most fruit crops, storage quality varies greatly between regions and seasons, causing significant commercial loss. Understanding the sources of this variability will contribute to the knowledge of fruit developmental physiology and may also benefit commercial fruit production via altered managements that reduce it or forecasts that(More)
— The importance of visualization in conveying knowledge is undisputed. For example, the rise and fall of stocks is processed and understood faster by examining the corresponding line graph than looking at the raw underlying numbers. For the effectiveness of this cognitive process several factors have been identified in research, like for example the(More)
eLearning systems open up new perspectives on knowledge transfer. Providing valuable content and elaborate interactivity structures could encourage the learner to discover knowlegde on one's own initiative in a constructivist fashion. Applying semantic web technologies to eLearning systems will facilitate a new generation of eLearning systems. In the(More)