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Computing system networks hold promise of increasing system efficiency through the sharing of resources, programs, and files. Required is a protocol that performs for the network a function analogous to that performed by control blocks for operating systems. Described are basic message-handling concepts and a protocol that are compatible with a broad range of network designs.

GAN, a system for g enerating a ctivity n etworks, is designed to save time in the preparation of activity networks and to deal conveniently with network programs. A defining description of a programming language designed for generating activity network from a set of standard networks is presented. Also, a general idea of a language for performing calculations on activity networks (scheduling activity networks) is given.

The long-haul communications network is the backbone of military communications. It provides the coordination necessary for global military operations and logistic support. For maximum network effectiveness, a central monitoring and control function is necessary. System studies described in this paper have shown that automatic data processing is applicable to network monitoring and control, and provides rapid and efficient network reaction to natural and man-made disturbances.

It has been the intent of this paper to define a Database Management System as a network of logical subsystems, to include a specification of the gross function of each subsystem. Figures 1 and 2 describe the network and illustrate the relationships between the subsystems. An attempt has been made to define a hierarchy of solutions to the problem of file sharing - a problem which must be solved if performance is to be maintained in the face of a movement toward multi-access systems operating on large integrated databases. These solutions are developed in sufficient detail so as to make them clearly distinguishable. The ingredients of a ``secure'' Database Management System were discussed. The security problem, like the sharing problem, becomes critical as databases are made available to more and more users.

There are a wide variety of terminal devices in wireless mesh networks. In order to manage the heterogeneous networks efficiently and to solve the mismatching problem between the physical network and its P2P overlay, a membership management protocol for the P2P overlay in wireless mesh networks is proposed— BA-gossip protocol. It combines scale-free network model (BA model) with gossip scheme. Decentralization and locally probability-preferential attachment are two key mechanisms in BA-gossip protocol. The BA-gossip protocol is abstracted into two mathematical models. To analyze the protocol performance in an ultimate state, BA-gossip growing network model is considered. To reflect the performance of real networks, BA-gossip evolving network model is considered. Through mean-field approach, BA-gossip growing network model is proved stable and scale-free. BA-gossip evolving network model is also proved stable by the same method. The simulation results show that both growing and evolving network models do not change the stability of BA model. The BA-gossip growing network model is more fault-tolerant than traditional BA model in complicated P2P network case. The simulation results also imply that both models solved the mismatching problem to a certain extent and are more appropriate in managing heterogeneous wireless mesh networks