Abstract Tenualosa ilisha also known as Hilsa shad is one of the important anadromous fish species in South Asia and some middle eastern countries because its economic, cultural ecological significance. The importance hilsa this region has driven a large number scientific studies quantification these to identify knowledge gaps future research directions. For purpose, we conducted scientometric ...

Three human observers estimated the illumination direction for samples of random Gaussian surfaces illuminated by a collimated beam from random directions. These stimuli appear as 'texture' due to shading and shadowing (the surface on the microscale was Lambertian of uniform albedo; thus texture appears only through shading and shadowing). We found that observers were able to estimate the azimu...