t-SURFF: Fully Differential Two-Electron Photo-Emission Spectra

The time dependent surface flux (t-SURFF) method is extended to single and double ionization of two electron systems. Fully differential double emission spectra by strong pulses at extreme UV and infrared wave length are calculated using simulation volumes that only accommodate the effective range of the atomic binding potential and the quiver radius of free electrons in the external field. For a model system we find pronounced dependence of shake-up and non-sequential double ionization on phase and duration of the laser pulse. Extension to fully three-dimensional calculations is discussed

Multi-Agent Based Information Systems For Patient Coordination in Hospitals

The health sector is a central domain in every economy. It is challenged by progressing costs and funding issues. Hospitals play a major role for the examination and treatment of patients. The sequence how patients are assigned to hospital units determines the quality of treatment, the resource utilization, as well as the patients’ overall treatment time. Thus, efficient scheduling of patients in hospitals is crucial. Current approaches disregard the decentral organization in hospitals and neglect the varying pathway of patients since they often focus on one single unit solely. We propose an agent-based coordination mechanism that overcomes these limitations. Patients and hospital resources are modeled as autonomous software agents which follow their own objectives. This reflects the decentralized structure in hospitals. Agents are coordinated by a distributed mechanism where software agents improve their situation through negotiations which moves towards an overall pareto-optimum. We show promising evaluations based on experiments

Mitigating response distortion in IS ethics research

Distributed construction of conceptual models may lead to a set of problems when these models are to be compared or integrated. Different kinds of comparison conflicts are known (e.g. naming conflicts or structural conflicts), the resolution of which is subject of different approaches. However, the expost resolution of naming conflicts raises subsequent problems that origin from semantic diversities of namings – even if they are syntactically the same. Therefore, we propose an approach that allows for avoiding naming conflicts in conceptual models already during modelling. This way, the ex-post resolution of naming conflicts becomes obsolete. In order to realise this approach we combine domain thesauri as lexical conventions for the use of terms, and linguistic grammars as conventions for valid phrase structures. The approach is generic in order to make it reusable for any conceptual modelling language

Sourcing and automation decisions in financial value chains

Online research maps are websites that present information about certain research activities in a structured manner. Institutions like universities, states, or individual researchers use them as knowledge base to identify and communicate “who knows what” and “where can the respective information be found”. Furthermore, these items are used as a research marketing measure, stressing the importance of this kind of portal. However, research maps differ in their range of functionalities, their respective naming, their target audience and so on. Thus, it is an exhausting task identifying and choosing the right set of functionalities. Our goal is to offer a template for the creation of common practice online research maps. For this purpose, we present a reference model and describe its development process. As preliminary measure, 66 research maps have been carefully analysed with respect to the formerly mentioned aspects. Derived from the results of our analysis, common practice was identified and used as basis for developing a reference model for online research maps. For development purposes, an existing language for describing internet portals was chosen and adapted to suite the requirements of describing research maps. The reference model presented in this article was then evaluated in a multi-methodical procedure

The Preference Survey Module: A Validated Instrument for Measuring Risk, Time, and Social Preferences

This paper presents an experimentally validated survey module to measure six key economic preferences – risk aversion, discounting, trust, altruism, positive and negative reciprocity – in a reliable, parsimonious and cost-effective way. The survey instruments included in the module were the best predictors of preferences revealed in incentivized choice experiments. We also offer a streamlined version of the module that has been optimized and piloted for applications where time efficiency and simplicity are paramount, such as international telephone surveys