171 research outputs found

    The Eighth Central European Conference "Chemistry towards Biology": snapshot

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    The Eighth Central European Conference "Chemistry towards Biology" was held in Brno, Czech Republic, on 28 August – 1 September 2016The Eighth Central European Conference "Chemistry towards Biology" was held in Brno, Czech Republic, on 28 August-1 September 2016 to bring together experts in biology, chemistry and design of bioactive compounds; promote the exchange of scientific results, methods and ideas; and encourage cooperation between researchers from all over the world. The topics of the conference covered "Chemistry towards Biology", meaning that the event welcomed chemists working on biology-related problems, biologists using chemical methods, and students and other researchers of the respective areas that fall within the common scope of chemistry and biology. The authors of this manuscript are plenary speakers and other participants of the symposium and members of their research teams. The following summary highlights the major points/topics of the meeting

    Quality of human-computer interaction - results of a national usability survey of hospital-IT in Germany

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    <p>Abstract</p> <p>Background</p> <p>Due to the increasing functionality of medical information systems, it is hard to imagine day to day work in hospitals without IT support. Therefore, the design of dialogues between humans and information systems is one of the most important issues to be addressed in health care. This survey presents an analysis of the current quality level of human-computer interaction of healthcare-IT in German hospitals, focused on the users' point of view.</p> <p>Methods</p> <p>To evaluate the usability of clinical-IT according to the design principles of EN ISO 9241-10 the IsoMetrics Inventory, an assessment tool, was used. The focus of this paper has been put on suitability for task, training effort and conformity with user expectations, differentiated by information systems. Effectiveness has been evaluated with the focus on interoperability and functionality of different IT systems.</p> <p>Results</p> <p>4521 persons from 371 hospitals visited the start page of the study, while 1003 persons from 158 hospitals completed the questionnaire. The results show relevant variations between different information systems.</p> <p>Conclusions</p> <p>Specialised information systems with defined functionality received better assessments than clinical information systems in general. This could be attributed to the improved customisation of these specialised systems for specific working environments. The results can be used as reference data for evaluation and benchmarking of human computer engineering in clinical health IT context for future studies.</p

    Users’ design feedback in usability evaluation: a literature review

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    Abstract As part of usability evaluation, users may be invited to offer their reflections on the system being evaluated. Such reflections may concern the system’s suitability for its context of use, usability problem predictions, and design suggestions. We term the data resulting from such reflections users’ design feedback. Gathering users’ design feedback as part of usability evaluation may be seen as controversial, and the current knowledge on users’ design feedback is fragmented. To mitigate this, we have conducted a literature review. The review provides an overview of the benefits and limitations of users’ design feedback in usability evaluations. Following an extensive search process, 31 research papers were identified as relevant and analysed. Users’ design feedback is gathered for a number of distinct purposes: to support budget approaches to usability testing, to expand on interaction data from usability testing, to provide insight into usability problems in users’ everyday context, and to benefit from users’ knowledge and creativity. Evaluation findings based on users’ design feedback can be qualitatively different from, and hence complement, findings based on other types of evaluation data. Furthermore, findings based on users’ design feedback can hold acceptable validity, though the thoroughness of such findings may be questioned. Finally, findings from users’ design feedback may have substantial impact in the downstream development process. Four practical implications are highlighted, and three directions for future research are suggested

    Experimental progress in positronium laser physics

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    The Impact of Brand Quality on Shareholder Wealth

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    This study examines the impact of brand quality on three components of shareholder wealth: stock returns, systematic risk, and idiosyncratic risk. The study finds that brand quality enhances shareholder wealth insofar as unanticipated changes in brand quality are positively associated with stock returns and negatively related to changes in idiosyncratic risk. However, unanticipated changes in brand quality can also erode shareholder wealth because they have a positive association with changes in systematic risk. The study introduces a contingency theory view to the marketing-finance interface by analyzing the moderating role of two factors that are widely followed by investors. The results show an unanticipated increase (decrease) in current-period earnings enhances (depletes) the positive impact of unanticipated changes in brand quality on stock returns and mitigates (enhances) their deleterious effects on changes in systematic risk. Similarly, brand quality is more valuable for firms facing increasing competition (i.e., unanticipated decreases in industry concentration). The results are robust to endogeneity concerns and across alternative models. The authors conclude by discussing the nuanced implications of their findings for shareholder wealth, reporting brand quality to investors, and its use in employee evaluation

    A mixed-data evaluation in group TOPSIS with differentiated decision power

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    [[abstract]]This main objective of this paper is to provide decision support for mixed data in group Technique for Order Preference by Similarity to Idea Solution (TOPSIS) with differentiated decision power. We use a signum function to compare the ordinal performance of alternatives on any qualitative criterion, or the partial information provided by decision makers. The proposed process for ordinal information is uniformly coherent with the traditional TOPSIS steps, preserving the characteristic of distance-based utilities. Ordinal weights are also considered herein, and the decision power of the group members is formulated by their weights under an agreement in the group. Two examples demonstrate that the proposed approach has some benefits and achieves robustness with two types of sensitivity analyses. Some discussions and their limitations to the approach are also provided.[[notice]]èŁœæ­ŁćźŒ

    Elementary particles and general relativity

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