Showing papers on "Concept of operations published in 1988"

Focusing real-time systems analysis on user operations

Abstract: A way is presented to model and validate complex, real-time systems by describing these systems from the viewpoints of the major parties in system development: the customer, the user, and the implementer. The models representing these points of view are called, respectively, the requirements model, the operations-concept model, and the implementation model. The focus is on how the concept of operations can be formally factored into established real-time system-analysis methods in terms a nontechnical user can understand. The approach integrates and refines several real-time-oriented modeling methods, including structured analysis, finite-state machines, and threads. Modeling needs are discussed, the multiview paradigm is presented, and an extensive example of a bottle-filling system is given to illustrate the use of the method. >

Measurement of loading and operations flexibility in flexible manufacturing systems: an information-theoretic approach

Abstract: An information-theoretic approach is applied for measuring the flexibility in flexible manufacturing systems (FMSs). The general relation between flexibility and entropy is discussed. The entropy for a Markovian process is obtained and then applied to closed queueing network models of FMSs to discuss loading flexibility which arises from the power to regulate the frequency of the visit of a part to different work stations. The concept of operations entropy as a measure of operations flexibility, which arises from the power to choose the work station and the corresponding operations, is introduced. The operations entropy has been decomposed into entropies within and between operations and entropies within and between groups of operations. This measure has been used to determine the next operation to be performed on a part by using the principle of least reduction of flexibility.

Alternative Maintenance Organization Structures for Operational Wings

Abstract: : Maintenance organizations have evolved over time because of the environment, technology, size, and mission This study addresses the basic question of how today's maintenance organizations support the Air Force's new logistics concept of operations First, background research examines basic management theory, the development of maintenance organization, and today's overall logistics concept Then, centralized maintenance used in Military Airlift Command and decentralized maintenance used by Strategic Air Command and the Tactical Air Forces are described The background and descriptions provide a basis to identify potential problems meeting the overall logistics concept of operations (aw)

Preliminary Design and Concept of Operations for a Small Tactical Imaging Satellite

Abstract: The imaging satellite is solar powered and 3 axis stabilized. A constellation of satellites in sun synchronous orbits will provide near worldwide coverage with revisit times of 90 minutes. Command and control will come from a single field unit, although many units may have receive capability. The satellite could be used during times of crisis or stored for future use when reconstitution of forces may be necessary.

Building Combat Strength through Logistics: Translating the New Air Force Logistics Concept of Operations into Action

Abstract: : A decade of research involving the unpredictability of peace and wartime demands in the field challenges many of the fundamental principles upon which the Air Force logistics system is based. New decision-tools for dealing with these uncertainties are undergoing prototype testing, development, and implementation. This paper provides background on a new logistics concept of operations for ensuring that the Air Force can fully utilize available resources to optimize aircraft availability under peacetime and wartime conditions. An AFLC perspective is offered on the basic limitations to flexible and responsive logistics support in a high threat conventional conflict and the kind of actions that are required to make the Air Force logistics system of the future more capable of supporting the full spectrum of war scenarios. Today's logistics processes assume wartime requirements can be predicted accurately enough to identify the resources combat units need to be self-sufficient during the initial period of war. Yet peacetime operations and combat simulation demonstrate that this approach is totally inadequate in war. Air bases in theaters of war are no longer safe havens from enemy action; combat damage to runways, maintenance facilities, prepositioned supplies, and other logistics resources will be extremely high. Continuity of operations under these conditions requires much greater integration across air bases, and between the traditional retail and wholesale logistics systems. Rapid reprogramming, priority distribution and repair of critical logistics resources, regional logistics control networks, and flexible transportation systems for inter- and intra- theater logistics support are required for this purpose. (sdw)