Hello, Readers!

My name is Alexa Schreier and I am serving as the Barbara Holley Intern for the next year (through Academic Year 2015/2016)! As the Holley Intern I will be moving around between the four main departments at Musselman Library, which includes Special Collections & Archives, Tech Services, User Services, and Research and Instruction. [excerpt

Hello Everyone!

My name is Avery Fox and I am the Diane Werley Smith ’73 intern for the summer of 2015. My opportunities in the Musselman Library Special Collections include a spattering of conservation, archival, and cataloguing projects and getting an introduction to all of the activities that take place in Special Collections. I will be working closely with the staff experiencing first hand all of the work that goes into the organized and preserved collections. So far I have begun work on a collection of letters from Lillian Quinn, a woman who lived in the World War II era, as well as a project with the pamphlet collection. In addition, I and the other interns have been working with Mary, the Special Collection’s conservator, on a variety of conservation projects. There is more to come on these projects as the summer progresses, and I’ll be sure to post pictures! [excerpt

Performance improvements to the AODV routing protocol and multiple hop wireless routes : a thesis presented in partial fulfilment of the requirements for the degree of Masters of Engineering in Computer Systems Engineering at Massey University, Palmerston North, New Zealand

This research focused on improving the performance of the Ad-hoc On-demand Distance Vector (AODV) routing protocol over multiple hop routes. The two specific areas that this research addressed were the dramatic decrease in throughput over multiple hop IEEE 802.11 wireless routes and the problems caused by the use of hello messages by AODV implementations to detect broken routes. To help ensure that this research was suitable for real world scenarios, only off-the-shelf software and hardware was used for both the implementations and the tests. This thesis firstly presents an overview of IEEE 802.11 based wireless networking and the AODV protocol, along with wireless networking and networking in general within the Linux operating system. The thesis then presents the problems caused by hello messages and shows how the IEEE 802.11 wireless standard contributes to the dramatic decrease in throughput over multiple hop routes. To overcome the hello message problems, an AODV implementation was developed which used existing mechanisms on the data link layer, specifically the transmit retry limit, rather then hello messages to detect broken links. To address the multiple hop route throughput problem, the use of two and four IEEE 802.11 based wireless network interfaces per node were investigated, rather than using just a single wireless interface per node. These proposed solutions, and the AODV implementation that was developed as part of this research, were then tested in the areas of functionality and throughput performance improvements. The thesis concludes by presenting the performance improvements resulting from using multiple interfaces per node and the non hello message based AODV implementation along with outlining possible future research in this area

Hello message scheme enhancement in CRMANET

© 2016 IEEE. All these years, a lot of efforts have been put upon how to reduce the broadcast overhead consumption in Cognitive Radio enabled Mobile Ad hoc Network (CRMANET). In this work, we propose an improved hello message scheme named Adaptive Classified Hello Scheme (ACHS) adopting classification method in CRMANET. Different from fixed hello interval and content form in frequently used Periodic Hello Message Scheme (PHMS), ACHS categorizes nodes into different classes based on node mobility. Each class in ACHS will be configured with different hello intervals and content format. Given each nodes real-time function performing in CRMANET (on the route or off the route), ACHS employs different strategies. For instance, when nodes are performing data transmission, instead of sending dedicate hello messages, their hello information will be attached into the data message to further reduce the control overhead. Compared with Periodic Hello Message Scheme (PHMS) and Reactive Hello Protocol (RHMS) in simulation, ACHS has improved hello efficiency around 50%

Compensation for thermal effects in mirrors of Gravitational Wave Interferometers

In this paper we study several means of compensating for thermal lensing which, otherwise, should be a source of concern for future upgrades of interferometric detectors of gravitational waves. The methods we develop are based on the principle of heating the cold parts of the mirrors. We find that thermal compensation can help a lot but can not do miracles. It seems finally that the best strategy for future upgrades (``advanced configurations'') is maybe to use thermal compensation together with another substrate materials than Silica, for example Sapphire.Comment: 20 pages, 12 figure

Saying Hello World with GReTL - A Solution to the TTC 2011 Instructive Case

This paper discusses the GReTL solution of the TTC 2011 Hello World case. The submitted solution covers all tasks including the optional ones.Comment: In Proceedings TTC 2011, arXiv:1111.440

Goodbye Polsko, Hello Anglio

Joanna Czechowska Speaks with Joanna KosmalskaThis interview is part of a literature project DEC-2011/01/B/HS2/05120 financed by the National Science Centre