TweetGenie is an online demo that infers the gender and age of Twitter users based on their tweets. TweetGenie was able to attract thousands of visitors. We collected data by asking feedback from visitors and launching an online game. In this paper, we describe the development of TweetGenie and evaluate the demo based on the received feedback and manual annotation. We also reflect on practical ...

Propagation modeling has attracted much interest because it plays an important role in wireless network planning and optimization. Deterministic approaches such as ray tracing and ray launching have been investigated, however, due to the running time constraint, these approaches are still not widely used. In previous work, an intelligent ray launching algorithm, namely IRLA, has been proposed. ...

A facility was constructed for the study of waterentry, water-exit, and underwater trajectory behavior of small momentum-propelled missiles for varied trajectory launching angles, missile accelerations and velocities, wave fields and condi tions of cavitation. A unique feature is the electromagnetic missile propulsion system. The facility is made principally of non-magnetic and electrically non...

This paper describes the components of a runtime system for launching parallel applications and presents performance results for starting a job on more than a thousand nodes of a workstation cluster. This runtime system was developed at Sandia National Laboratories as part of the Computational Plant (Cplant) project, which is deploying large-scale parallel computing clusters using commodity har...

Despite the great attention western countries pay to the mind and human consciousness in philosophy and the arts, disturbances of mental health remain not only neglected but also deeply stigmatised across our societies. Viewed through a global lens, this marginalisation is only amplified still further. Yet the fragile—and utterly fragmented for the most disadvantaged—state of mental health serv...

This article describes the indoor IRLA (Intelligent Ray Launching Algorithm), which originates from an efficient outdoor propagation prediction model. Implementation and validation are given in detail. An indoor office scenario is selected and simulations via the IRLA model and two other reference models have been performed. Predictions are analyzed and recommendations are given. Results show t...

The invoice is an important business document. Despite a large number of convincing arguments, overall adoption rates of electronic invoicing disappoint. Several European countries try to accelerate diffusion speed, some by law, others by stimulating market drivers. This paper focuses on the question whether the government can make a difference as a launching customer of eInvoicing. Results fro...

Since its inception a little over three years ago, PPARResearch has become a vibrant forum showcasing global effort in this ever-expanding field of research. Over this short period, more than 200 articles have appeared in the journal, both in regular and special issues. It is hoped that these articles have served as catalysts for new initiatives within the field. The following is a brief overvi...