In this paper we describe a collaborative environment created to support distributed evaluation of a complex system architecture. The approach couples an interactive architecture browser with collaborative walkthroughs of an evolving architectural representation. The collaborative architecture browser was created to facilitate involvement of project stakeholders from geographically dispersed, h...

We propose an analytic method to evaluate groupware design. The method was inspired by GOMS, a well-known approach to analyze usability problems with single-user interfaces. GOMS has not yet been amply applied to evaluate groupware because of several fundamental distinctions between the single-user and multi-user contexts. The approach described in this paper overcomes such differences. We also...

We describe the Molteno3 glaucoma implant, its design principles and the differences and similarities with the current generation of Molteno implant. Clinical results from 37 Molteno3 implant procedures for primary open angle glaucoma are compared with a control group of 33 pressureridge single plate Molteno implants. The results obtained in cases of primary open angle glaucoma, neovascular gla...

Respondents to a recent survey identifi ed the evaluation of service effectiveness as the most pressing priority for child welfare research in Canada. After a comprehensive search, we located and reviewed 10 peer-reviewed impact evaluations, published during 1995–2005, of interventions in Canadian child welfare. Four evaluations were based on randomized controlled trials, and six on non-randomi...

A study was undertaken to assess the impact ofemploying fuzzy technologies in areas of complex weapon system design. The technology was examined for use in a life-cycle cost exercise with the objective of providing a foundation from which to make service life assessments and recommendations on future weapon systems. The issues associated with this problem can be highly subjective and often exhi...

Background With the reauthorization of the United States Elementary and Secondary Education Act (referred to in 2001 as No Child Left Behind–NCLB), attention focused on the need for evidenced-based education research, particularly education policies and interventions that rest on what NCLB referred to as “scientifically based research.” In practice, this focus on scientifically based education ...

This analysis introduces the Presenter’s Paradox. Robust findings in impression formation demonstrate that perceivers’ judgments show a weighted averaging pattern, which results in less favorable evaluations when mildly favorable information is added to highly favorable information. Across seven studies, we show that presenters do not anticipate this averaging pattern on the part of evaluators ...

This study examines the relationships between group faultlines, appraisals (evaluations) of group members, emotional responses, and performance in groups. The study uses a 2 by 2 experimental design, crossing demographic alignment (alignment vs. no alignment) and appraisals (instrumental vs. intrinsic) as between-subjects variables. Data from 5 types of measurement were used to analyze the effe...

No good scientist wants to produce, or be accused of producing, a poorly conducted study. Even so, toxicologists conducting animal studies are not widely expected to document the steps they take to ensure internal validity—that is, to prevent their results from being skewed due to a methodological issue (a concept known as risk of bias). This is likely to change soon, and a team of researchers ...

Statistical theory plays an important role in channel modelling which in turn can be applied in design and performance evaluation of various communication systems. The design and analysis of cascade fading models have been an active area of interest in recent years due to its application in numerous real world scenarios such as keyhole channel and multihop communication system. These cascade fa...