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-...

This study attempted to test whether the use of computer-assisted language learning (CALL) and innovative collaborative learning could be more effective than the use of traditional collaborative learning in improving students’ English proficiencies. A true experimental design was used in the study. Four randomly-assigned groups participated in the study: a traditional collaborative learning gro...

Especially, it has been investigated how to upgrade the retention level for academic achievement and science concepts and how to improve positive attitudes towards science. Quasi-experimental design has been used in the study. In order to seek the effect of inquiry based learning approach, two of the classes constituted by the school management, except for random distribution, have been defined...

Separating between semantic and syntactic aspects of language processing in the brain is a difficult task. In an attempt to distinguish between the two, many studies so far have measured responses to semantic or syntactic violations in reading comprehension tasks. However, this methodology may be inaccurate in describing semantic and syntactic processing during normal reading. In this study, we...

I study a simple global game, in which I relax the assumption that preferences are common knowledge. I show that with higher-order uncertainty regarding preferences, players can at best coordinate on the risk-dominant equilibrium, regardless of whether information about fundamentals is common or private. The example also suggests that the strength of the coordinating effect of public informatio...

In some educational settings, the cost of textbooks approaches or even exceeds the cost of tuition. Given limited resources, it is important to better understand the impacts of free open educational resources (OER) on student outcomes. Utilizing digital resources such as OER can substantially reduce costs for students. The purpose of this study was to analyze whether the adoption of no-cost ope...

The concept of “believability” (of an agent) is difficult to pin down, making its value questionable for experimental design, quantitative empirical evaluations, and explanations of people’s perceptions of agents in general. We propose to replace “believability” with a set of finer-grained notions based on people’s attitudes that are better suited to these uses. Based on our analysis, we demons...

The statement, “Results of most non-traditional authorship attribution studies are not universally accepted as definitive,” is explicated. A variety of problems in these studies are listed and discussed: studies governed by expediency; a lack of competent research; flawed statistical techniques; corrupted primary data; lack of expertise in allied fields; a dilettantish approach; inadequate trea...