A compact rotary vane attenuator

Rotary vane attenuator, when used as a front end attenuator, introduces an insertion loss that is proportional to the angle of rotation. New technique allows the construction of a shortened compact unit suitable for most installations

An introduction to the Princeton sailwing windmill

Specifically discussed is the sailwing windmill. The aerodynamic characteristics of the sailwing itself are presented in condensed form and its natural application to the wind machine is discussed. Past and present sailwing windmill configurations are shown and their relative merits are compared. A section on a future promising configuration is presented and its compatibility to advanced technology electrical machinery is briefly discussed. Also included is a short bibliography

On including quality in applied automatic gait recognition

Many gait recognition approaches use silhouette data. Imperfections in silhouette extraction have a negative effect on the performance of a gait recognition system. In this paper we extend quality metrics for gait recognition and evaluate new ways of using quality to improve a recognition system. We demonstrate use of quality to improve silhouette data and select gait cycles of best quality. The potential of the new approaches has been demonstrated experimentally on a challenging dataset, showing how recognition capability can be dramatically improved. Our practical study also shows that acquiring samples of adequate quality in arbitrary environments is difficult and that including quality analysis can improve performance markedly

Towards self-protecting ubiquitous systems : monitoring trust-based interactions

The requirement for spontaneous interaction in ubiquitous computing creates security issues over and above those present in other areas of computing, deeming traditional approaches ineffective. As a result, to support secure collaborations entities must implement self-protective measures. Trust management is a solution well suited to this task as reasoning about future interactions is based on the outcome of past ones. This requires monitoring of interactions as they take place. Such monitoring also allows us to take corrective action when interactions are proceeding unsatisfactorily. In this vein, we first present a trust-based model of interaction based on event structures. We then describe our ongoing work in the development of a monitor architecture which enables self-protective actions to be carried out at critical points during principal interaction. Finally, we discuss some potential directions for future work

Precision power measurements of spacecraft CW signal with microwave noise standards

Precision power measurements of spacecraft CW signal with microwave noise standard

Michael Nixon

Over the last few weeks I have been delighted to get to know an individual who will become an integral part of the senior leadership team at Andrews University. His resume spoke to some of his life priorities and his accomplishments, and that was encouraging. But it is Michael Nixon as a person, his story, that I will share with the campus community today as I want you to meet the person I have met over the last few weeks: Caring, passionate, faithful, hopeful, determined and thoughtful. You will have much more of an opportunity to meet Michael as he takes up his position as Vice President for Diversity & Inclusion on August 1; however, in the meantime, here is a window into the story of our newest vice president. In 2009, Michael graduated from Andrews University. Up to that point, his life had been comparatively sheltered within the Seventh-day Adventist community, though he had enjoyed some diverse experiences during his college years, studying at Antillean University (Puerto Rico), Oakwood University (Alabama) and then Andrews. However, upon his graduation he decided to broaden his horizons and step out of his comfort zone. This journey took him as an AmeriCorps worker to a Catholic university, through law school, involved him with work for immigrant populations and ended with his role as a civil rights attorney in New York, specifically in the arena of fair housing. Those are the facts, but behind those facts is the story of an individual who has had to face challenging decisions on his faith commitment and his choice of priorities. In making his choices, Michael’s passion for his faith has deepened, and so has his understanding and commitment to equity and inclusion. In the last few years he has shown unequivocally that when it comes to faith and career, faith must come first. And when he has chosen where to walk it has been to walk alongside the disadvantaged, rather than where he might find visible personal success. Please do take the opportunity to get to know Michael better through his own words, as he shares his story through the lens of a critical moment in his life. Read his story in Stories of Andrews. Thank you, Michael, for taking the step to join us at Andrews University and share with us your skills, talents and passion for faith and diversity. You represent the spirit of Andrews and we welcome you to our—and your—campus! Andrea Luxtonhttps://digitalcommons.andrews.edu/stories-2017-summer/1000/thumbnail.jp

Compelling Interactions

Architecture can unite cultural diversity through means of communication via spatial orientation. Spatial and sensory experience are key components in developing spaces that can compel interaction. By fusing communication and architecture, a complex international airport terminal can transform into a structure that supports the notion of communication and interaction between people