Comparative response times of time-sharing systems on the ARPA network /

Vita.

Time-sharing on a computer with a small memory,

"Supported in part by Atomic Energy Commission Contract AT(11-1)-1469."

Time sharing at Illinois: experience and plans,

On cover: COO-1469-0046.

Storage allocation module for a time sharing system,

"Supported in part by the Atomic Energy Commission under Contract no. US AEC AT(11-1) 1018."

An interactive time-share system for a small computer /

"February 1, 1966."

Simulation analysis of a network computer,

Bibliography: p. 43.

The statistical estimation of throughput and turnaround functions for a university computer system /

Vita.

Deadlock in distributed computer networks /

Originally presented as the author's thesis (M.S.), University of Illinois.

An elementary discussion of the time share concept/

"July 5, 1965"

Economies of scale in computer use : initial tests and implications for the computer utility /

"This report reproduces a thesis of the same title submitted to the Alfred P. Sloan School of Management, Massachusetts Institute of Technology, in partial fulfillment of the requirements for the degree of Doctor of Philosophy, June 1969."--p. 2.

An analytic study of a shared device among independent computing systems /

Item 247.

CTSS mini-reference /

"Under the auspices of the U.S. Department of Energy by the Los Alamos National Laboratory under contract W-7405-Eng.36"--P. [3] of cover.

Supporting real-time distributed computer-controlled systems with multi-hop P-NET networks

Fieldbus communication networks aim to interconnect sensors, actuators and controllers within process control applications. Therefore, they constitute the foundation upon which real-time distributed computer-controlled systems can be implemented. P-NET is a fieldbus communication standard, which uses a virtual token-passing medium-access-control mechanism. In this paper pre-run-time schedulability conditions for supporting real-time traffic with P-NET networks are established. Essentially, formulae to evaluate the upper bound of the end-to-end communication delay in P-NET messages are provided. Using this upper bound, a feasibility test is then provided to check the timing requirements for accessing remote process variables. This paper also shows how P-NET network segmentation can significantly reduce the end-to-end communication delays for messages with stringent timing requirements.

Increased fuel economy in transportation systems by use of energy management. Volume III. Real-time (hybrid computer) simulation program set.

Transportation Department, Washington, D.C.

Communication Architecture Design for Real-Time Networked Control Systems

Networked control over data networks has received increasing attention in recent years. Among many problems in networked control systems (NCSs) is the need to reduce control latency and jitter and to deal with packet dropouts. This paper introduces our recent progress on a queuing communication architecture for real-time NCS applications, and simple strategies for dealing with packet dropouts. Case studies for a middle-scale process or multiple small-scale processes are presented for TCP/IP based real-time NCSs. Variations of network architecture design are modelled, simulated, and analysed for evaluation of control latency and jitter performance. It is shown that a simple bandwidth upgrade or adding hierarchy does not necessarily bring benefits for performance improvement of control latency and jitter. A co-design of network and control is necessary to maximise the real-time control performance of NCSs