directionality

n.

方向性，定向性；指向性；

A directionality based location discovery scheme for wireless sensor networks
Headache types and panic disorder: directionality and specificity
Periodicity, directionality, and randomness: Wold features for image modeling and retrieval
Periodicity, Directionality, and Randomness: Wold Features for Image Modeling and Retrieval
Magnitude and Directionality of Interaction in Ion Pairs of Ionic Liquids:  Relationship with Ionic Conductivity
Microsatellite evolution--evidence for directionality and variation in rate between species
Shc and Fak Differentially Regulate Cell Motility and Directionality Modulated by Pten
Origin of Attraction and Directionality of the π/π Interaction:  Model Chemistry Calculations of Benzene Dimer Interaction
Diffuse reflectance of oceanic waters. III. Implication of bidirectionality for the remote-sensing problem
Method and apparatus for determining and initiating interaction directionality within a multimedia communication center