Gerald W. Hartwig

Nested Sliding Window Protocols with Packet Fragmentation Gerald W . Shapiro

A single-hop OSI structured network with multiple layers of sliding window flow control and packet fragmentation between layers is analyzed. An approximation algorithm is presented to hierarchically reduce the network to a single queue whose performance characteristics represent the original network. Network transmission characteristics are restricted to Erlang distributions. Validation against...

Hartwig symbols

Gerald Grace

The death of Mr. Gerald Grace took place in South Africa as the result of a singularly tragic incident on Sept. 17th. For some time the Witwatersrand had been terrorised by a band of desperadoes. Mr. Grace was travelling on the Witwatersrand reef in a motor-car resembling that in which the gang was believed to be escaping. The police challenged the car, but, according to the account in the Rand...

Gerald Sommer

Response to Hartwig and Davies

and indeed many of the other analyses reported in our paper do not suffer from potential bias due to weak instruments. Hartwig and Davies did, however, suggest that we could have used estimates from an external source to obtain less biased results in our MR-Egger analyses. Whereas we agree that this would be good practice in most situations, we do not feel that it would have been appropriate in...