This study investigated the effect of different scientific inquiry activities on visitors' understanding of the science underlying an interactive exhibit. The exhibit, "colored shadows," creates a pattern of colored shadows on a white wall, due to a person's body blocking the light from colored lamps. The subjects were 392 museum visitors, aged 7 to adult. They were individually guided through ...

In response to multiple LGBTQ youth suicides in 2010, Dan Savage and Terry Miller sought to provide messages of hope to at-risk LGBTQ youth through the YouTube-based “It Gets Better Project” (IGBP). With empirical data gathered through online chatbased in-depth interviews, this study offers insight into multi-dimensional motivations for participation in an online community. Pointedly, data show...

As project managers (PMs) play an important role in project success, assigning PMs with appropriate skills and personalities to projects is a crucial task. Nevertheless, empirical research on skill requirements for information technology (IT) PMs is limited and little information systems literature focuses on the role of internally recruited IT PMs. This paper presents a case study of a trouble...

ERRATA delete optimal Section accommodate R(t,k) vi ci nity change b-a to a-b Bayes risk It easily follows (by induction) from (9) and (21) ...

Spreadsheets are important business tools. Increasingly they are being used for simulation e.g. to perform risk analysis. Such tasks have far greater computational demands than traditional spreadsheet bookkeeping applications. In this paper we show how spreadsheets can support supercomputing. This is achieved without requiring the spreadsheet user to have specialist tools or knowledge. The key ...

Business process management is often considered as a top-downmanagement activity. This view is inconsistent with the observation that information infrastructures are at drift, outside top-downmanagement control. To reconcile both views, a meta-framework is presented that frames the interplay of the design and emergence of business processes. Business processes are identified as a particular for...

The increasing dependency of many businesses with information technology (IT)and the high percentage of the IT investment in all invested capital in businessenvironment ask for more attention to this important driver of business. Thelimitation of capital budget forces the managers to look for more wise investment inIT. There are many cost-cutting techniques in the literature and each of them ha...

In this paper, we consider a multi-server queuing system in which additional servers are allowed for a longer queue to reduce the customer’s balking and reneging behavior. The customers are assumed to arrive in Poisson fashion and their service- times follow exponential distribution. The number of servers in long run depends on the queue-length. We obtain equilibrium queue size distribution. Th...