Modifying the C Index for Use With Holland Codes of Unequal Length

2006 ◽  
Vol 14 (2) ◽  
pp. 267-275 ◽  
Author(s):  
Donald E. Eggerth ◽  
Michael E. Andrew
Keyword(s):  
Holland Codes ◽  
Unequal Length

scholarly journals Learning by Doing: The Use of Distance, Corners and Length in Rewarded Geometric Tasks by Zebrafish (Danio rerio)

Animals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 2001
Author(s):  
Greta Baratti ◽  
Angelo Rizzo ◽  
Maria Elena Miletto Petrazzini ◽  
Valeria Anna Sovrano
Keyword(s):  
Danio Rerio ◽  
Three Dimensional ◽  
Reference Memory ◽  
Spatial Abilities ◽  
Learning By Doing ◽  
Surface Distance ◽  
Extended Surfaces ◽  
Unequal Length ◽  
Over Time

Zebrafish spontaneously use distance and directional relationships among three-dimensional extended surfaces to reorient within a rectangular arena. However, they fail to take advantage of either an array of freestanding corners or an array of unequal-length surfaces to search for a no-longer-present goal under a spontaneous cued memory procedure, being unable to use the information supplied by corners and length without some kind of rewarded training. The present study aimed to tease apart the geometric components characterizing a rectangular enclosure under a procedure recruiting the reference memory, thus training zebrafish in fragmented layouts that provided differences in surface distance, corners, and length. Results showed that fish, besides the distance, easily learned to use both corners and length if subjected to a rewarded exit task over time, suggesting that they can represent all the geometrically informative parts of a rectangular arena when consistently exposed to them. Altogether, these findings highlight crucially important issues apropos the employment of different behavioral protocols (spontaneous choice versus training over time) to assess spatial abilities of zebrafish, further paving the way to deepen the role of visual and nonvisual encodings of isolated geometric components in relation to macrostructural boundaries.

PRINCESS ELIZABETH, SECOND DAUGHTER OF KING CHARLES I, AND RICKETS

PEDIATRICS ◽  
1979 ◽  
Vol 64 (2) ◽  
pp. 241-241
Author(s):  
T. E. C.
Keyword(s):  
Relative Proportion ◽  
Spinal Column ◽  
Lower Extremities ◽  
Long Bone ◽  
Upper Arm ◽  
Charles I ◽  
King Charles I ◽  
The Right ◽  
Shoulder Blade ◽  
Unequal Length

In 1856 the coffin of Princess Elizabeth (1635-1650) was discovered during the demolition of old St. Thomas's Church at Newport, Isle of Wight, England. Mr. Ernest P. Wilkins, MRCS, examined the remains of the Princess and noted:1 The bones of the upper arm were slightly curved outwards—more particularly the right humerous—while those of the forearm were somewhat twisted and considerably curved outwards. The spinal column, retaining the relative position of the vertebrae during life, presented an extremely curved condition constituting the double lateral or S curvature of pathologists, which must have caused considerable projection of the right shoulder-blade and its attendant deformity .... The condyles of the lower extremities were very large in relative proportion. The femur or thigh bone of the left side was curved forwards and inwards, that of the right side was more distorted than any other long bone. It was very much curved forwards and inwards. This bone was much flattened, its greatest diameter being from before, obliquely outwards and backwards; the concavity of the curve was somewhat filled in, and the bone thus strengthened by additional osseous deposit in accordance with the natural reparative tendency of Nature's laws. The bones of the leg, the tibia and fibula, were much curved outwards. The bones of the skeleton indicate the great deformity which existed during life—there was evidently considerable "growing out" of the right shoulder-blade and corresponding flattening of the left side of the back. The lower extremities were contorted and of unequal length, the knees were what is termed "knocked"; below the knees the legs were bowed, the heels thrown outwards and the toes inverted.

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