Control oriented local area networks (COLANs) are being installed in factories at an increasing rate. Traditionally, process control has operated with a master scheduler (computer) monitoring a number of points in a control grid. As the complexity of today's process control needs grow, the need to process information locally increases. Microcontrollers, networked with a master scheduler, can collect data from a locus of points and make decisions as to whether the master needs to be notified or not. By processing data locally, memory and execution time are freed up for the master scheduler. Task implementation becomes modular in nature, resulting in process control software that is easier to write, and maintain. This structure is the basis for COLAN V, a low cost, real-time, distributed control network developed at Oregon State University. COLAN V was used as the foundation for the creation of a multi-media presentation system. Six microcontrollers were networked together to remotely control the operation of projectors, projector screens, and lighting. Based on the application the master scheduler was replaced by a tape player. This allowed the storage of the audio part of the presentation on one track of the tape and the storage of the synchronized control signals on the other track. This distributed control network supplied a low cost solution to a need that was not addressed by the commercial market at any price. / Graduation date: 1992

Thesis (M.S.)--Worcester Polytechnic Institute. / Keywords: indoor geolocation; TOA. Includes bibliographical references (p. 97).

STARNET is a fiber optic based network which facilitates the interconnection of distributed Local Area Networks. Configured as a sixteen pointed star topology with a multiprocessor based controller at the center of the star (named the Central Switch). STARNET is capable of scheduling calls from users connected to User Access Nodes located at the points of the star. Messages are passed from one node to another through the Central Switch via duplex fiber optic lines connecting each node to the center. / This paper presents a multiprocessor based design of the User Access Node. The hardware and software structure is examined in depth, providing solid guidelines for the physical construction of the unit. The performances of statistical STARNET models using parameters obtained from the design (and three different Central Switch models) are plotted and compared for five different examples of external traffic. The model analysis gives an indication of the expected message delays, supporting the feasibility of the design.

The dissertation addresses the communication issues of interconnecting the different government sectors LANs, and access to the global Internet. Network capacities are being purposely overengineered in today's commercial Internet. Any network provider, be it a commercial Internet Service Provider (ISP) or Information Technology Service department at government sector, company or university site, will design network bandwidth resources in such a way that there will be virtually no data loss, even during the worst possible network utilization scenario. Thus, the service delivered by today's end-to-end wide area Internet would be perfect if it wasn't for the inter-domain connections, such as Internet access link to the ISP, or peering points between ISPs. The thesis studies the performance of the network in Eritrea, displaying the problems of Local Area Networks (LANs) and Wide Area Networks (WAN) and suggesting initial solutions and investigating the performance of (WAN) through the measured traffic analysis between Asmara LAN and Massawa LAN, using queuing theory system (M/M/1 and M/M/2) solution. The dissertation also uses OPNET IT Guru simulation software program ·to study the performance of LAN and WLAN in Eritrea. The items studied include traffic, collision, packet loss, and queue delay. Finally in order to follow the current trends, we study the performance ofVOIP links in Eritrean WANs environment, with a focus on five different link capacities: 28 kbps, 33 kbps, 64 kbps, and 128 kbps for voice and 256/512 kbps for voice and data. Using the R value as a measure of mean opinion score (MOS), we determine that the 33 kbps link would be adequate for Eritrean WANs. / Thesis (M.Sc.Eng.)-University of KwaZulu-Natal, Durban, 2006.

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Bibliography: leaves 203-219. / 226 leaves : ill. ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Develops efficient analytical methodologies for multimedia traffic integration and improved design tools to enhance data performance. The call admission control policies proposed are not only able to enhance traffic performance but also maintain communication quality at an acceptable level. In particular, the multiple priority scheme is a promising technique for the control of packet congestion in a high-speed wireless multimedia environment. / Thesis (Ph.D.)--University of Adelaide, Dept. of Electrical and Electronic Engineering, 2000?

Thesis (Ph.D.)--University of Adelaide, Dept. of Electrical and Electronic Engineering, 2000? / Bibliography: leaves 203-219.

Thesis (M.S.)--Eastern Illinois University, 2009. / Includes bibliographical references (leaves 58-60).

Thesis (M. App. Sc.)--Carleton University, 2002. / Includes bibliographical references (p. 116-118). Also available in electronic format on the Internet.

Thesis (M.Eng.) - Carleton University, 2005. / Includes bibliographical references (p. 77-81). Also available in electronic format on the Internet.