The coordinated use of multiple data resources in computer networks has been inhibited by the het... more The coordinated use of multiple data resources in computer networks has been inhibited by the heterogeneity of data types and forms used by various data providers. Research has indicated the feasibility of automatic mapping of data to required forms as an approach to two incompatibility problems. A study of the chemical identifiers used in 161 machine-readable bibliographic, numeric, and algorithmic sources of chemical data has indi cated that direct linkage by shared identifier between any particular pair of data bases is unlikely. Computer programs forming a prototype mapping system have been constructed and used to generate indirect linkages joining virtually all pairs of data resources by mapping paths of direct linkages to and among resources that can function as translators, changing the form of the supplied data so they can function as input to the desired data resource or to another translator. A study of a set of bibliographic data bases has identified a generalized set of...
The literature on human error is reviewed with emphasis on theories of error and classification s... more The literature on human error is reviewed with emphasis on theories of error and classification schemes. A methodology for analysis and classification of human error is then proposed which includes a general approach to classification. Identification of possible causes and factors ...
IEEE Transactions on Systems, Man, and Cybernetics
events. The averages are taken over the weeks in a given cluster.) Both techniques produced very ... more events. The averages are taken over the weeks in a given cluster.) Both techniques produced very similar results. The most salient event is force (number 22) which is a strong discriminator between each pair of classes except between C2 and C3. Other strong discriminators which appear widely are the propose (number 10) and accuse (number 12) events. IV. CLASSIFICATION OF NEW WEEKS PArrERNS
This report presents a proposed methodology that involves a two-stage process of classification a... more This report presents a proposed methodology that involves a two-stage process of classification and analytical evaluation of decision aids for nuclear power plant operators. The classification scheme relates any particular aid to one or more general decision-making tasks. Evaluation proceeds using a normative top-down design process based on the classification scheme and involves determining how various design issues associated with
IEEE Transactions on Systems, Man, and Cybernetics, 1980
The sequence of tests chosen by humans in two fault diagnosis tasks are described in terms of a m... more The sequence of tests chosen by humans in two fault diagnosis tasks are described in terms of a model composed of a rank-ordered set of heuristics or rndes-of-thumb. The identification and evaluation of such models are discussed. The approach is illustrated by modeling the choices of test sequences of 118 subjects in one task and 36 in the other task. The model and subjects are found to agree somewhat over 90 percent of the time.
IEEE Transactions on Systems, Man, and Cybernetics, 1979
Library networks are becoming increasingly complex public systems. Because of this trend, the man... more Library networks are becoming increasingly complex public systems. Because of this trend, the management of library networks can perhaps be enhanced by the use of policy analysis models. Within this paper, such a model is briefly reviewed. Three case studies have been performed with this model. The recommendations resulting from these studies are discussed. Special emphasis is placed on what appear to be key ingredients to successfully applying the modeling approach. Further, the management implications of model-based policy analyses are considered.
The coordinated use of multiple data resources in computer networks has been inhibited by the het... more The coordinated use of multiple data resources in computer networks has been inhibited by the heterogeneity of data types and forms used by various data providers. Research has indicated the feasibility of automatic mapping of data to required forms as an approach to two incompatibility problems. A study of the chemical identifiers used in 161 machine-readable bibliographic, numeric, and algorithmic sources of chemical data has indi cated that direct linkage by shared identifier between any particular pair of data bases is unlikely. Computer programs forming a prototype mapping system have been constructed and used to generate indirect linkages joining virtually all pairs of data resources by mapping paths of direct linkages to and among resources that can function as translators, changing the form of the supplied data so they can function as input to the desired data resource or to another translator. A study of a set of bibliographic data bases has identified a generalized set of...
The literature on human error is reviewed with emphasis on theories of error and classification s... more The literature on human error is reviewed with emphasis on theories of error and classification schemes. A methodology for analysis and classification of human error is then proposed which includes a general approach to classification. Identification of possible causes and factors ...
IEEE Transactions on Systems, Man, and Cybernetics
events. The averages are taken over the weeks in a given cluster.) Both techniques produced very ... more events. The averages are taken over the weeks in a given cluster.) Both techniques produced very similar results. The most salient event is force (number 22) which is a strong discriminator between each pair of classes except between C2 and C3. Other strong discriminators which appear widely are the propose (number 10) and accuse (number 12) events. IV. CLASSIFICATION OF NEW WEEKS PArrERNS
This report presents a proposed methodology that involves a two-stage process of classification a... more This report presents a proposed methodology that involves a two-stage process of classification and analytical evaluation of decision aids for nuclear power plant operators. The classification scheme relates any particular aid to one or more general decision-making tasks. Evaluation proceeds using a normative top-down design process based on the classification scheme and involves determining how various design issues associated with
IEEE Transactions on Systems, Man, and Cybernetics, 1980
The sequence of tests chosen by humans in two fault diagnosis tasks are described in terms of a m... more The sequence of tests chosen by humans in two fault diagnosis tasks are described in terms of a model composed of a rank-ordered set of heuristics or rndes-of-thumb. The identification and evaluation of such models are discussed. The approach is illustrated by modeling the choices of test sequences of 118 subjects in one task and 36 in the other task. The model and subjects are found to agree somewhat over 90 percent of the time.
IEEE Transactions on Systems, Man, and Cybernetics, 1979
Library networks are becoming increasingly complex public systems. Because of this trend, the man... more Library networks are becoming increasingly complex public systems. Because of this trend, the management of library networks can perhaps be enhanced by the use of policy analysis models. Within this paper, such a model is briefly reviewed. Three case studies have been performed with this model. The recommendations resulting from these studies are discussed. Special emphasis is placed on what appear to be key ingredients to successfully applying the modeling approach. Further, the management implications of model-based policy analyses are considered.
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