An untargeted metabolomics workflow for the detection of metabolites derived from endogenous or exogenous tracer substances is presented. To this end, a recently developed stable isotope-assisted LC-HRMS-based metabolomics workflow for the global annotation of biological samples has been further developed and extended. For untargeted detection of metabolites arising from labeled tracer substanc...

Web interfaces have been widely used to support user interactions in complex business applications. In a typical design of such an application, the execution is driven by the http requests sent by the web-browser. Thus, the control of the workflow is encoded by the hyperlinks and buttons embedded in various web pages that support the user interactions. This web-driven design makes it hard to re...

Wajnryb proved in [W2] that the mapping class group of an orientable surface is generated by two elements. We prove that one of these generators can be taken as a Dehn twist. We also prove that the extended mapping class group is generated by two elements, again one of which is a Dehn twist.

This paper describes an architectural model supporting the development of a particular type of application with the trading of intangible goods. To control the coordination of trading partners a coordination mechanism is presented based on an event-oriented workflow engine. This work intends to give some support to the idea that the workflow technology can be suitable for this type of applicati...

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one of the main features of high throughput computing systems is the availability of high power processing resources. cloud computing systems can offer these features through concepts like pay-per-use and quality of service (qos) over the internet. many applications in cloud computing are represented by workflows. quality of service is one of the most important challenges in the context of sche...

We discuss conformal symmetry on the two dimensional noncommutative plane equipped with Moyal product in the twist deformed context. We show that the consistent use of the twist procedure leads to results which are free from ambiguities. This lends support to the importance of the use of twist symmetries in noncommutative geometry.

The paper presents an architecture of a Petri net based framework for modelling and control of workflow processes. It focuses on the PNEditor module and briefly discusses workflow engine based on the models designed using the PNEditor. Then the paper describes method of synthesis Separating feasible places and an algorithm for reducing the number of places in the resulting Petri net.

Nowadays, enterprises express huge needs for mechanisms allowing interconnection of their business components. Due to the weakness of component integration facilities, a large amount of research and development has been made in this area. Nevertheless, developed mechanisms are generally hard-coded, proprietary and lack a high level of abstraction. This paper presents our contribution to the des...