When the total current in CESR was raised to about 300 ma a longitudinal instability threshold occurred which prevents a signi cant increase in the current. Experiments on CESR indicate that the main cause for the longitudinal instability is the H.O.M. in the cavities [1]. It has also been shown that by changing the cavities temperature the longitudinal instability threshold can be slightly rai...

Title of dissertation: DETECTING DDoS ATTACKS IN STUB DOMAINS Christopher Kommareddy, Doctor of Philosophy, 2006 Dissertation directed by: Prof. Samrat Bhattacharjee Department of Computer Science Dr. Richard La Department of Electrical & Computer Engineering DoS attacks have least impact when detected and mitigated close to the attacks’ source. This is more important for Distributed DoS (DDoS)...

Real-world data networks are large, making them difficult to analyze. Thus, analysts often generate network models of a more tractable scale to perform simulations and analyses, but even these models need to be fairly large. Because these networks do not directly correspond to any particular network, it is often difficult for the user to construct a mental model of the network. We present a net...

A rich and very dynamic Content distribution ecosystem enables today’s Internet users to access content associated with major providers from a close-by front-end server. While the advantages of the resulting locality of traffic for users (i.e. better performance) and providers (i.e. lower cost) are well understood, two basic questions about the content distribution ecosystem remained unanswered...

This paper describes the implementation of a Stub Generation system targeted specifically at C++. It enables distributed C++ applications to be constructed in a straightforward manner with minimal programmer assistance. The system does not require the use of an auxiliary interface definition language but instead processes existing C++ header files to maximise transparency. The generated code ex...

This paper presents a through-type harmonic transponder for S-band nonlinear radar. To increase the operating frequency range, 2-stage L-shaped matching network was configured input and output networks. In previous studies, conventional transponders were with λ/4 stubs in networks to minimize influence of these because impedance mismatch suppresses second fundamental signals. However, this desi...

This paper presents a coplanar waveguide fed rectangular slot antenna tuned by a patch stub. The presented antenna has 98% impedance bandwidth, and 6 dB average gain. The antenna can be used in phased array applications with more than 61% usable bandwidth.

This paper is aimed at demonstrating the high capabilities of KTa0.5Nb0.5O3 thin films for microwave agility applications. Tunable capacitors, resonators and phase shifters were realized with KTN materials. Their high frequency measurements showed, in particular, the very high tuning factors of these films under quite low electric field. Index Terms Ferroelectrics, Interdigital Capacitors, Phas...