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IEEE Transactions on Systems, Man, and Cybernetics

Issue 2 • Mar/Apr 1989

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Displaying Results 1 - 24 of 24
  • Knowledge-based computer-aided design of materials handling systems

    Publication Year: 1989, Page(s):188 - 196
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (844 KB)

    A knowledge-based system called MAHDE (materials handing design) is described that was devised to assist facility designers in the selection and configuration of materials handling equipment. The system implements techniques for representing and acquiring the preferences of the facility designer. This preferential knowledge is incorporated into a knowledge-based system utilizing heuristics to upda... View full abstract»

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  • Topology-based geometry representation to support geometric reasoning

    Publication Year: 1989, Page(s):175 - 187
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1104 KB)

    The geometry of parts and components is traditionally represented in the computer using some form of coordinate data in three-dimensional Euclidean space. Such a representation is at too low a level of detail to enable deep reasoning based on an understanding of the geometric relationships that exist in the part. It is suggested that an application-specific hierarchic representation of part geomet... View full abstract»

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  • Economic impact dynamics of complex engineering project scheduling

    Publication Year: 1989, Page(s):232 - 240
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (860 KB)

    The authors show how scheduling of complex multiprocess manufacturing or construction operations can be examined in an interindustry framework for its impact dynamics on a national or regional economy. The technical coefficients of the static Leontief input-output model are replaced by time-phased input coefficients containing additional information on the timing of industry inputs with respect to... View full abstract»

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  • Computational-complexity reduction for neural network algorithms

    Publication Year: 1989, Page(s):409 - 414
    Cited by:  Papers (5)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (436 KB)

    An important class of neural models is described as a set of coupled nonlinear differential equations with state variables corresponding to the axon hillock potential of neurons. Through a nonlinear transformation, these models can be converted to an equivalent system of differential equations whose state variables correspond to firing rates. The firing rate formulation has certain computational a... View full abstract»

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  • Theories and an exact interactive paired-comparison approach for discrete multiple-criteria problems

    Publication Year: 1989, Page(s):365 - 378
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1172 KB)

    An interactive approach is developed to help decision-makers (DMs) find the best alternatives with few questions without making stringent assumptions about their behavior. Theories and procedures are developed for ranking alternatives and eliminating suboptimal ones, assuming that the DM can respond to tradeoff- and paired-comparison questions. It is assumed that the DM wishes to maximize an unkno... View full abstract»

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  • Optimal storage assignment policies for multiaddress warehousing systems

    Publication Year: 1989, Page(s):197 - 204
    Cited by:  Papers (27)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (652 KB)

    The authors investigate the optimal storage assignment policy for a multiaddress warehousing system using a dedicated storage discipline and aisle captive, man-aboard vehicles performing item retrieval. A modeling scenario is presented which is designed to reflect warehousing practices emphasizing short-order picking cycle times and integrated operational control. Two theorems and proofs that are ... View full abstract»

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  • Control of uncertain systems with unmodeled actuator and sensor dynamics and incomplete state information

    Publication Year: 1989, Page(s):241 - 257
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1200 KB)

    The performance of controllers for a class of uncertain dynamical systems is analyzed in the presence of unmodeled actuator and sensor dynamics. It is shown that in uncertain systems with variable-structure control that contain small unmodeled inertias the sliding mode may be retained if an observer is utilized. The influence of the variable-structure observer on the performance of some control st... View full abstract»

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  • Decoupling fuzzy relational systems-an output feedback approach

    Publication Year: 1989, Page(s):414 - 418
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    The output feedback decoupling problem for fuzzy relational dynamic systems is considered. The structure of a decoupling controller is proposed, and some results concerning the solution of the decoupling problem are presented in terms of the proposed theorems. The essential difference between decoupling a fuzzy system and a nonfuzzy one is that, in the former, all the variables are characterized b... View full abstract»

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  • Toward the unification of three visual laws and two visual models in brightness perception

    Publication Year: 1989, Page(s):379 - 387
    Cited by:  Papers (24)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1332 KB)

    A novel visual model of brightness perception is introduced to resolve apparent incompatibilities among Fechner's logarithmic relation, Steven's power law response, and psychophysical and electrophysiological Km×I/(I+S) experimental results. The proposed visual model, which is based on combining and extending two existing ones (the multiplicativ... View full abstract»

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  • A functional approach to designing architectures for CIM

    Publication Year: 1989, Page(s):164 - 174
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1136 KB)

    The authors discuss a collection of mathematical models of various decisions that affect the design and implementation of a CIM (computer-integrated manufacturing) system. Objectives, constraints, decisions, and control strategies inherent in every CIM system are included. The models can be used to guide the development of the technology needed for automation. They also provide the inputs, outputs... View full abstract»

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  • A field-based study of troubleshooting in computer-controlled manufacturing systems

    Publication Year: 1989, Page(s):205 - 219
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1440 KB)

    Methods are described for collecting and analyzing data derived from the observation of troubleshooting in computer-controlled manufacturing systems. The data were collected by direct observation of troubleshooting episodes and by obtaining retrospective reports from the subjects immediately following the episodes. To analyze the data, the following attributes of each activity within each episode ... View full abstract»

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  • Learning in movement and control

    Publication Year: 1989, Page(s):258 - 270
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1112 KB)

    The authors propose novel knowledge representation and reasoning methods that are sufficient to develop a machine that can learn to control any controlled system in the same way that human beings learn: by observing only the input and output of the controlled systems. A simple implementation has been constructed to demonstrate the feasibility of building such a machine. It is not required that all... View full abstract»

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  • Representation of assembly and automatic robot planning by Petri net

    Publication Year: 1989, Page(s):418 - 422
    Cited by:  Papers (33)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (424 KB)

    The author proposes an approach to represent assembly by Petri nets and presents an algorithm of automatic robot assembly planning based on the Petri-net model. The Petri-net model of assembly is configured by the goal structures and initial constraints, both in the Petri-net formalism. Due to the Petri-net representation of assembly, the plan generation is quite straightforward and the planning a... View full abstract»

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  • Relative reward strength algorithms for learning automata

    Publication Year: 1989, Page(s):388 - 398
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (960 KB)

    A novel class of action probability update algorithms for learning automata that use the relative reward strengths of responses from the environment is examined. Specifically, update algorithms for S-model automata in which `recent' environmental responses for each of the actions retained are used. A convergence result is proven and the behavior of these automat is studied by simulation. ... View full abstract»

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  • An aggregate model of project-oriented production

    Publication Year: 1989, Page(s):220 - 231
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (948 KB)

    A production system is studied in which thousands of activities are carried out concurrently subject to precedence constraints and limitations on resources such as skilled labor and equipment. Ideally, management proposes a set of milestone dates, obtains an analysis of which milestones cannot be met, and determines which resources are underused or overused. This process continues interactively un... View full abstract»

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  • A hierarchical approach to the correspondence problem

    Publication Year: 1989, Page(s):271 - 276
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (924 KB)

    An algorithm for feature-point matching using a feature-point hierarchy (edges directed by corners) is presented. Psychophysical evidence indicates that higher-level image structures, such as line segments or corners, can aid the matching of low-level structures. This observation, applied to the correspondence problem in machine vision, directly motivates the implementation of the hierarchical mat... View full abstract»

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  • Threshold selection using estimates from truncated normal distribution

    Publication Year: 1989, Page(s):422 - 429
    Cited by:  Papers (19)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (980 KB)

    Two situations in which the image gray-level histogram cannot be used for threshold determination are: (1) the situation in which the background noise by itself has a multimodal distribution; and (2) the situation in which the object is so small that its contribution to the histogram is overwhelmed by the noise portion even if the noise distribution is unimodal. To alleviate these two undesirable ... View full abstract»

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  • Adaptive human-computer interfaces: a literature survey and perspective

    Publication Year: 1989, Page(s):399 - 408
    Cited by:  Papers (75)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1092 KB)

    The authors present a survey of recent research in adaptive interface computer software as well as a discussion of factors that require consideration in designing this software. An adaptive interface needs to include a knowledge base that encompasses four domains. These four domains are knowledge of the current user, knowledge of the interaction scheme, knowledge of the problem task, and knowledge... View full abstract»

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  • Bounded sample path control of discrete time jump linear systems

    Publication Year: 1989, Page(s):277 - 284
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (596 KB)

    A bounded sample path control strategy, based on the idea of minimizing an upper bound of the possible costs to go, is formulated. The finite and infinite versions of the JLQBSP (jump linear quadratic bounded sample path) problem are solved. A set of sufficient conditions for the existence and uniqueness of steady-state solutions that stabilize the controlled system with certainty (i.e. on any sam... View full abstract»

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  • A connectionist model for diagnostic problem solving

    Publication Year: 1989, Page(s):285 - 298
    Cited by:  Papers (72)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1296 KB)

    A competition-based connectionist model for solving diagnostic problems is described. The problems under consideration are computationally difficult in that multiple disorders may occur simultaneously and a global optimum in the space exponential to the total number of possible disorders is sought as a solution. To solve this problem, global optimization criteria are decomposed into local optimiza... View full abstract»

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  • Learning and optimization of machining operations using computing abilities of neural networks

    Publication Year: 1989, Page(s):299 - 314
    Cited by:  Papers (89)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1304 KB)

    The authors present a scheme that uses a feedforward neural network for the learning and synthesis task. Neural networks consist of a collection of interconnected processors that compute in parallel. The parallelism allows the network to examine various constraints simultaneously during the learning phase and enables reductions in computing time that are attractive in real-time applications. The l... View full abstract»

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  • Maximizing long-term gas industry profits in two minutes in Lotus using neural network methods

    Publication Year: 1989, Page(s):315 - 333
    Cited by:  Papers (31)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1816 KB)

    Generalized methods that are commonly used in neural-network research have made it possible for the US Energy Information Administration (EIA) to solve a gas-industry optimization problem on a personal computer that would previously have required a mainframe computer because of the run time required. The resulting model was used to produce EIA's official energy forecasts published in 1988. It is s... View full abstract»

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  • Blackboard system generator (BSG): an alternative distributed problem-solving paradigm

    Publication Year: 1989, Page(s):334 - 355
    Cited by:  Papers (8)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1828 KB)

    The authors review the status of a generic blackboard-based distributed problem-solving environment in which multiple agent cooperation can be effected. This environment is organized into a shared information panel, a chairman control panel, and a metaplanning panel. Each panel, in turn, contains a number of embedded AI (artificial-intelligence) techniques that facilitate its operation and that pr... View full abstract»

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  • Optimal queueing systems controls with finite buffers and with multiple component cost functions

    Publication Year: 1989, Page(s):356 - 364
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (704 KB)

    An analytical and tractable framework of an optimal feedback control policy is developed for queueing networks with limited storage buffers and with sequence-dependent service times. The general response measure used incorporates delay, shortage, and the setup costs. This formulation provides a perspective to dynamic flow-control models that are based on a rational function of the queue lengths of... View full abstract»

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