Packet reordering, high speed networks and transport protocol performance

We performed end-to-end measurements of UDP/IP flows across an Internet backbone network. Using this data, we characterized the packet reordering processes seen in the network. Our results demonstrate the high prevalence of packet reordering relative to packet loss, and show a strong correlation between packet rate and reordering on the network we studied. We conclude that, given the increased parallelism in modern networks and the demands of high performance applications, new application and protocol designs should treat packet reordering on an equal footing to packet loss, and must be robust and resilient to both in order to achieve high performance

Experiences with high definition interactive video conferencing

We review the design and implementation of UltraGrid, a new high definition video conferencing system, and present some experimental results. UltraGrid was the first system to support gigabit rate high definition interactive video conferencing on commodity systems and networks, and we present measurements to illustrate behavior of production networks subject to such real time traffic. We illustrate the benefits of hybrid IP/provisioned optical networks over best effort IP networks for this class of traffic, and motivate the development of congestion control algorithms for interactive conferencing on best effort IP networks

In Memoriam : W. Thomas Edmondson (1916–2000)

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/110086/1/lno20004561448.pd

Efficiencies of ingestion and assimilation by an invertebrate predator using C and P dual isotope labeling

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/109927/1/lno19933871550.pd

Good Professor Edmondson

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/110028/1/lno19883361234.pd

A high-performance data structure for mobile information systems

Mobile information systems can now be provided on small form-factor computers. Dictionary-based data compression extends the capabilities of systems with limited processing and memory to enable data intensive applications to be supported in such environments. The nature of judicial sentencing decisions requires that a support system provides accurate and up-to-date data and is compatible with the professional working experience of a judge. The difficulties caused by mobility and the data dependence of the decision-making process are addressed by an Internet-based architecture for collecting and distributing system data.We describe an approach to dictionary-based data compression and the structure of an information system that makes use of this technology

Hypolimnetic metabolism in Lake Washington: Relative effects of nutrient load and food web structure on lake productivity

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/109928/1/lno19883361334.pd

Release and cycling of nutrients between planktonic algae and herbivores

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/109923/1/lno19802540620.pd

The seasonality of phosphorus deposition in Lake Washington

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/110112/1/lno19832840796.pd

Net community production and hypolimnetic nutrient regeneration in a Michigan lake

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/110057/1/lno19863140788.pd