Recent Activities and Research in Progress at Navy Personnel Research and Development Center, San Diego

1974 ◽  
Keyword(s):  
Research And Development ◽  
San Diego ◽  
Navy Personnel ◽  
Development Center

Expert and Novice Differences in Recognizing Similar Situations Pat-Anthony Federico: Navy Personnel Research and Development Center

1993 ◽  
Vol 37 (13) ◽  
pp. 915-919
Keyword(s):  
Research And Development ◽  
Principal Components ◽  
Levels Of Analysis ◽  
Surface Features ◽  
Expert And Novice ◽  
Discriminant Analyses ◽  
Context Dependent ◽  
Navy Personnel ◽  
Development Center ◽  
Naval Officers

To test hypotheses regarding expert and novice differences in recognizing similar scenarios, 28 senior naval officers and 52 junior naval officers (1) classified tactical situations each of which appeared on a note card, (2) labeled every created cluster to convey a category description, and (3) signified their criteria for sorting scenarios. Principal-components and discriminant analyses, and associated statistics, established that when categorizing situations (1) experts are more context-dependent than novices, (2) experts and novices do not differ significantly in the number of schemas and scenarios per schema formed as well as in the access avenues ascribed for these schemas, (3) experts do not process scenarios at significantly deeper levels of analysis than novices, and (4) experts do not assign significantly more importance to conceptual aspects or deep structures than novices, and less importance to perceptual properties or surface features than novices.

PREDICTION OF DAILY GAIN, BACKFAT THICKNESS AND FEED CONVERSION RATIO AMONG CROSSBRED TERMINAL SIRES BETWEEN PUREBRED DUROC, PIETRAIN, AND LANDRACE BY CBE 4.0 SOFTWARE

2018 ◽  
Vol 1 (29) ◽  
pp. 72-81
Author(s):  
Hop Van Nguyen ◽  
Tinh Huu Nguyen ◽  
Hoa Van Tran ◽  
Kinh Van La
Keyword(s):  
Research And Development ◽  
High Reliability ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Backfat Thickness ◽  
Feed Conversion ◽  
Significant Difference ◽  
Pig Farm ◽  
Development Center ◽  
Daily Gain

The objective of the study is to compare the practical results with the predicted results by Crossbreeding Effects (CBE) software on pig crossbred based on daily gain, backfat thickness and feed conversion ratio. Another purpose of this study is to predict those three traits among some expected hybridization. This research was conducted on pig farm at Binh Thang Research and Development center from 2013 to 2017. In this study, for each pair of purebred Duroc and Pietrain, Duroc and Landrace, Pietrain and Landrace, twelve hybridizations were analyzed, nine unhybridizations were predicted by CBE software. The results showed that there was no significant difference between the predicted and actual data. With some unhybridization crossbred , the predictions showed high reliability (P<0.05). Based on the predicted data of CBE software , some traits of the crossbred animals would not be improved, therefore, it was not necessary to conduct these hybridizations

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