Human cognitive performance in antisubmarine warfare: situation assessment and data fusion

Space systems are an important part of everyday life. They provide global positioning data, communications, and Earth science data such as weather information. All space systems require satellite operators to ensure high performance and continuous operations in the presence of off-nominal conditions due to space weather and onboard anomalies. Similar to other high-stress, time critical operations (e.g., piloting an aircraft or operating a nuclear power plant), situation awareness is a crucial factor in operator performance during these conditions. Because situation awareness is largely acquired by monitoring large numbers of parameters, it is difficult to rapidly and accurately fuse the data to develop an accurate assessment. To aid operators in this task, we have developed a prototype Multi-Agent Satellite System for Information Fusion (MASSIF) for automated data fusion and situation awareness. This system is based on human cognitive decision-making models and integrates a fuzzy logic system for semantic data processing, Bayesian belief networks for multi-source data fusion and situation assessment, and rule-bases for automatic network construction. This paper describes initial simulation-based results to establish feasibility and baseline performance. We describe knowledge engineering efforts, belief network construction, and operator-interfaces for automated data fusion and situation awareness for a hypothetical geosynchronous satellite.

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Thimerosal Not Linked to Cognitive Performance

Clinical Neurology News ◽

10.1016/s1553-3212(07)70292-3 ◽

2007 ◽

Vol 3 (10) ◽

pp. 2

Author(s):

ELIZABETH MECHCATIE

Keyword(s):

Cognitive Performance

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Theory and Implementation of NDT Data Fusion

Research in Nondestructive Evaluation ◽

10.1080/09349849508968101 ◽

1995 ◽

Vol 6 (1) ◽

pp. 227-236 ◽

Cited By ~ 1

Author(s):

X. E. Gros ◽

P. Strachan ◽

D. W. Lowden

Keyword(s):

Data Fusion

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Effects of a Group Program to Increase Cognitive Performance Through Cognitively Stimulating Leisure Activities in Healthy Older Subjects

GeroPsych ◽

10.1024/1662-9647/a000035 ◽

2011 ◽

Vol 24 (2) ◽

pp. 83-92 ◽

Cited By ~ 22

Author(s):

Valentina A. Tesky ◽

Christian Thiel ◽

Winfried Banzer ◽

Johannes Pantel

Keyword(s):

Cognitive Function ◽

Cognitive Performance ◽

Older Persons ◽

Intervention Program ◽

Leisure Activities ◽

The Elderly ◽

Cognitive Stimulation ◽

Group Program ◽

Positive Effects ◽

Older Subjects

To investigate the effects of leisure activities on cognitive performance of healthy older subjects, an innovative intervention program was developed. Frequent participation in cognitively stimulating activities (i.e., reading, playing chess, or playing music) is associated with reduced risk of dementia. AKTIVA (active cognitive stimulation – prevention in the elderly) is an intervention program designed to enhance cognitive stimulation in everyday life by increasing cognitive stimulating leisure activities. The present study determines the effects of AKTIVA on cognitive function, mood and attitude toward aging in a sample of older participants from the general population. Several measurement instruments were used including the Alzheimer’s Disease Assessment Scale (ADAS-Cog), the Trail-Making Test (TMT), and the Memory Complaint Questionnaire (MAC-Q). Initially, the sample consisted of 307 older persons (170 female, 72 ± 7 years). The intervention was evaluated with a randomized, controlled pre-post follow-up design. Participants were randomly assigned to one of three conditions: AKTIVA intervention (n = 126), AKTIVA intervention plus nutrition and exercise counseling (n = 84), no-intervention control group (n = 97). The AKTIVA intervention consisted of 8 weekly sessions and two booster sessions after a break of 4 months. Participation in the group program resulted in positive effects on cognitive function and attitude toward aging for subassembly groups. Older persons (≥ 75 years) showed enhanced speed of information processing (by TMT Version A) (F = 4.17*, p < .05); younger participants (< 75 years) showed an improvement in subjective memory decline (by MAC-Q) (F = 2.55*, p < .05). Additionally, AKTIVA enhanced the frequency of activities for leisure activities for subassembly groups. The results of this study suggest that the AKTIVA program can be used to increase cognitively stimulating leisure activities in the elderly. Further research is necessary to identify the long-term effects of this intervention particularly with respect to the prevention of dementia.

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