Article
Refine
Year of publication
- 2015 (126) (remove)
Institute
- Fachbereich Medizintechnik und Technomathematik (43)
- INB - Institut für Nano- und Biotechnologien (31)
- Fachbereich Wirtschaftswissenschaften (23)
- Fachbereich Chemie und Biotechnologie (20)
- IfB - Institut für Bioengineering (11)
- Fachbereich Energietechnik (9)
- Fachbereich Maschinenbau und Mechatronik (9)
- Fachbereich Elektrotechnik und Informationstechnik (8)
- Fachbereich Luft- und Raumfahrttechnik (6)
- Fachbereich Architektur (4)
- Fachbereich Bauingenieurwesen (4)
- IBB - Institut für Baustoffe und Baukonstruktionen (1)
- Institut fuer Angewandte Polymerchemie (1)
- Nowum-Energy (1)
- Solar-Institut Jülich (1)
- Sonstiges (1)
- ZHQ - Bereich Hochschuldidaktik und Evaluation (1)
Document Type
- Article (126) (remove)
Keywords
- Booster Station (1)
- Discrete Optimization (1)
- Gamma distribution (1)
- Goodness-of-fit test (1)
- Independence test (1)
- Parametric bootstrap (1)
- Pump System (1)
- Technical Operations Research (TOR) (1)
- Vapnik–Čhervonenkis class (1)
- availability (1)
We introduce a new way to measure the forecast effort that analysts devote to their earnings forecasts by measuring the analyst's general effort for all covered firms. While the commonly applied effort measure is based on analyst behaviour for one firm, our measure considers analyst behaviour for all covered firms. Our general effort measure captures additional information about analyst effort and thus can identify accurate forecasts. We emphasise the importance of investigating analyst behaviour in a larger context and argue that analysts who generally devote substantial forecast effort are also likely to devote substantial effort to a specific firm, even if this effort might not be captured by a firm-specific measure. Empirical results reveal that analysts who devote higher general forecast effort issue more accurate forecasts. Additional investigations show that analysts' career prospects improve with higher general forecast effort. Our measure improves on existing methods as it has higher explanatory power regarding differences in forecast accuracy than the commonly applied effort measure. Additionally, it can address research questions that cannot be examined with a firm-specific measure. It provides a simple but comprehensive way to identify accurate analysts.
A new microfluidic assembly method for semiconductor-based biosensors using 3D-printing technologies was proposed for a rapid and cost-efficient design of new sensor systems. The microfluidic unit is designed and printed by a 3D-printer in just a few hours and assembled on a light-addressable potentiometric sensor (LAPS) chip using a photo resin. The cell growth curves obtained from culturing cells within microfluidics-based LAPS systems were compared with cell growth curves in cell culture flasks to examine biocompatibility of the 3D-printed chips. Furthermore, an optimal cell culturing within microfluidics-based LAPS chips was achieved by adjusting the fetal calf serum concentrations of the cell culture medium, an important factor for the cell proliferation.