The present study aims to provide insight into the value of different teacher roles in designing and implementing technology-rich learning activities for early literacy. Three cases, each with a different teacher role (executoronly, re-designer, co-designer) were examined. In the executor-only role, teachers implemented ready-made activities. In the re-designer role teachers collaboratively re-...

This paper reports an experiment to determine whether subjects will learn to stop using a strictly dominated strategy that can be an above average reply. It is difficult to find an experimental design that eliminates the play of the strictly dominated strategy completely. The least effective treatment used money to motivate behavior directly. The most effective treatment uses a binary-lottery t...

During last decade a particular eeort has been put to the precise measurement of Re(" 0 ="). Challenging experiments are currently analysing data in order to deduce this fundamental parameter. In this article we will discuss in a comparative way two experimental techniques, these of KTeV at Fermilab and NA48 at CERN, with the aim to give an idea of the diiculty of the measurement and describe t...

Delay-Doppler mapping continues to be the most widely used imaging technique in radar astronomy. Various methods have been devised to partition echoes in delay-Doppler space for different degrees of echo dispersion (as quantified by the overspreading factor ). These include the standard interpulse/intercode methods for underspread ( ) or slightly overspread ( ) echoes, intrapulse methods for gr...

We use a quasi-experimental research design to study the effect of giving workers feedback on their relative performance. The setting is a firm in which workers are paid piece rates and where, for exogenous reasons, management begins to reveal to workers their relative position in the distribution of pay and productivity. We find that merely providing this information leads to a large and long-...

Purpose Serious games are playing an increasingly significant role across a range of educational contexts. Business focused serious games can provide students with an authentic learning experience and their use has been increasingly taken up by business school faculty, including those delivering entrepreneurship education. This paper seeks to evaluate the impact of participation in a serious bu...

Laboratory experiments as evaluating method for IT artifacts – Experimental design and use case within a Product-Service-System" (2010).

The use of statistics in the daily operation of test laboratories tends to be very formal. Six Sigma for Design, Design of Experiments, Gauge R&R, and ANOVA may be used to help design and analyze product and process characteristics in research labs. The use of statistical approaches can provide important preventive actions since many of the common SPC (Statistical Process Control) tools can det...

Highly controllable environment Synchronised presentation of audible and visual stimuli Interactive studies are possible Automatic recording of relevant data, such as reaction-time, interactive responses or even speech A thoroughly designed experiment can directly produce the data needed for a statistical evaluation relieving the empiricist of the tedious task of annotating audioor video-record...

Definition. Microarray Experiment: "A set of one or more hybridisations, each of which relates one or more samples to one or more arrays." (Brazma et al., 2001) The steps to individual microarray experiment are outlined in Figure 1. Figure 1. Basic stages of a microarra y experimen t. It is important to note that, apart from the analysis stage, the researcher must document concisely all stages ...